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Kubota Corporation patents


Recent patent applications related to Kubota Corporation. Kubota Corporation is listed as an Agent/Assignee. Note: Kubota Corporation may have other listings under different names/spellings. We're not affiliated with Kubota Corporation, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "K" | Kubota Corporation-related inventors


Farm work planning assistance system

A farm work planning assistance system includes a field information storage section 6 configured to individually take in farm work information of fields of farming entities distributed over a wide area and to store the information as field information in combination with agro-environment information assigned to the respective fields, a farm work plan calculation section 7 configured to use, as an input parameter, farm work target information sent from each farming entity for a subject field as a subject for a farm work to be done by this farming entity and to extract farm work plan information for the subject field by referring to the field information, and an information output section 52 configured to output the extracted farm work plan information to the farming entity.. . ... Kubota Corporation

Hydraulic system for working machine

A hydraulic system includes a hydraulic actuator to be operated by an operation fluid, a first hydraulic pump to output the operation fluid, a second hydraulic pump to output the operation fluid, a control valve to which the operation fluid outputted from the first hydraulic pump is supplied, the control valve being configured to control the operation fluid that is to be supplied to the hydraulic actuator, a first fluid tube connecting the control valve to the hydraulic actuator, a second fluid tube to which the operation fluid outputted from the second hydraulic pump is supplied, the second fluid tube being connected to the first fluid tube, and a first switching valve disposed on the second fluid tube. The spool includes a communicating fluid passage being configured to supply the operation fluid to the first inner fluid passage, the operation fluid being received by the pressure-receiving port.. ... Kubota Corporation

Riding work vehicle

It is contemplated to arrange a plurality of operational levers without inviting complications of the arrangements or enlargement of the vehicle body, intensively for better operability between the driver's seat and one of the right and left rear fenders. In a riding work vehicle, a plurality of operational levers 25, 26 are disposed adjacent on the right and left sides between a driver's seat and one of right and left rear fenders 7. ... Kubota Corporation

Tube rack of centrifugal separator

There can be provided a tube rack of a centrifugal separator, in which a bottom rubber portion can be readily mounted and readily replaced, and yet such bottom rubber portion cannot be easily separated. The tube rack includes a holder (14) including a plurality of tube holes (12) each configured to accommodate a tube that is used for a sample and each includes an opening at one end portion of the holder serving as a tube insertion side, and an opening at a bottom portion of the holder that is at the other end. ... Kubota Corporation

Hydraulic system for working machine

A hydraulic system includes a hydraulic pump to output an operation fluid, a hydraulic apparatus to be activated by the operation fluid, an operating member to operate the hydraulic apparatus, an operation valve to determine a pressure of the operation fluid in accordance with operation of the operating member, the operation fluid being supplied to the hydraulic apparatus, a first fluid tube connecting the hydraulic pump to the operation valve, a first working valve disposed on the first fluid tube, the first working valve being configured to change an opening aperture of the first working valve, a first outputting fluid tube connected to a section of the first fluid tube between the operation valve and the first working valve, and a second working valve disposed on the first outputting fluid tube, the second working valve being configured to change an opening aperture of the second working valve.. . ... Kubota Corporation

Work vehicle

A work vehicle includes an assist motor that is located opposite an engine with respect to a continuously variable transmission device. The assist motor has an output shaft that extends coaxially with a drive shaft of the continuously variable transmission device and is interlocked with the drive shaft. ... Kubota Corporation

Vehicle

A vehicle includes a body holding device configured to hold the body of a seated driver; a travel control unit configured to drive the vehicle body so that it travels; and a maximum vehicle speed setting unit configured to set a set maximum vehicle speed. The travel control unit controls an output from the driving unit based on the operation amount of an accelerator device if the vehicle speed is lower than the set maximum vehicle speed, and restricts the output from the driving unit irrespective of the operation amount of the accelerator device if the vehicle speed is equal to or higher than the set maximum vehicle speed. ... Kubota Corporation

Riding-type mower

In a riding-type mower, a vehicle body includes a rear portion in which a pair of right/left vehicle body frames extend in a front-rear direction relative to the vehicle body, with a gap therebetween in a lateral width direction. A mowing device is configured to discharge mown grass rearward relative to the vehicle body such that the mown grass falls onto the ground. ... Kubota Corporation

Grass mower

A grass mower is provided with a plurality of rotating shafts passing through a ceiling wall of a mower deck and extending upward, disposed in a side-by-side state; cutting blades respectively linked to the rotating shafts in an internal space of the mower deck; an electric motor mounted at a location to the lateral outside relative to a rotation path of the cutting blades within the mower deck, and having an output shaft extending upward; and a power transmission mechanism positioned above the ceiling wall of the mower deck, and configured to transmit power from the output shaft to the rotating shafts of the cutting blades.. . ... Kubota Corporation

Work vehicle and front loader

A stand 18 is maintained under a stored posture when the stand 18 is pivoted toward the stored posture side in association with a dumping actin of a bucket 13 and a lock mechanism 25 is switched to a locking state. The stand is switched to an in-use posture when the lock mechanism 25 is switched to a releasing state while the stand 18 is maintained under the stored posture by the lock mechanism 25.. ... Kubota Corporation

Power source apparatus and working machine having the same

A power source apparatus of the present invention includes a battery module, a housing constituting a first chamber configured to house the battery module, the housing having a bracket configured to house and arrange a plurality of the battery modules in parallel, a chassis constituting an inner space surrounded by a plurality of wall surfaces, the chassis storing the housing in the inner space, a blower disposed inside the chassis, the blower being configured to blow air, and a second chamber disposed between the wall surfaces and the bracket and configured to pass the air to an intake portion of the blower, the air having passed through the first chamber. A length of the bracket is longer than a distance between the wall surfaces in a direction of parallel arrangement of the plurality of battery modules, the wall surfaces constituting an inner surface of the second chamber.. ... Kubota Corporation

Power source apparatus and work machine having the same

A power source apparatus includes a plurality of batteries, a chassis having an inner space surrounded by a plurality of wall surfaces including a first lateral wall surface, a first vertical wall surface, a second lateral wall surface, a second vertical wall surface and storing the batteries in the inner space, and a blower having a blowing portion to blow air. The power source apparatus further includes an air introduction path formed between the first lateral wall surface and the batteries and configured to introduce the air to the batteries. ... Kubota Corporation

Power source apparatus and work machine having the same

A power source apparatus includes a plurality of batteries, a blower having a blowing portion arranged on one side of the batteries, the blower being configured to blow air from the blowing portion, a chassis having an inner space surrounded by a plurality of wall surfaces that include a first wall surface and a second wall surface and storing the batteries in the inner space. The power source apparatus includes an air introduction path formed between the first wall surface and the batteries, the air introduction path being configured to introduce the air to the batteries, and a flow path formed between the second wall surface and the batteries, the flow path being configured to introduce the air blown from the blower to the air introduction path, the air introduction path having at least partially a first cross-sectional area larger than a second cross-sectional area of the flow path.. ... Kubota Corporation

Power source apparatus and work machine having the same

A power source apparatus includes a battery module including a plurality of battery cells, a housing forming a housing chamber to house and arrange a plurality of the battery modules in parallel, a blower to blow air, an inter-module path formed between the battery modules adjacent to each other; and an inter-cell path formed between the battery cells adjacent to each other. The housing includes an intake portion to take the air into the housing chamber, and a sending portion to send the air from the housing chamber. ... Kubota Corporation

08/09/18 / #20180226645

Titanium oxide compound, and electrode and lithium ion secondary battery each manufactured using same

A titanium oxide compound according to the present invention comprises bronze-type titanium oxide or titanium oxide mainly composed of bronze-type titanium oxide, and contains calcium and/or silicon. The titanium oxide compound contains 0.005 to 2.5 mass % inclusive of calcium or 0.15 to 0.55 mass % inclusive of silicon, or contains 0.005 to 1.2 mass % inclusive of calcium and 0.15 to 0.2 mass % inclusive of silicon, or contains 0.005 to 0.1 mass % inclusive of calcium and 0.15 to 0.5 mass % inclusive of silicon.. ... Kubota Corporation

08/09/18 / #20180225892

Management system for working machine

A monitoring system of a working machine including a first wireless communicator arranged at and/or around a storage area of the working machine, a second wireless communicator arranged on the working machine and configured to communicate with the first wireless communicator in wireless, and a monitor to watch the working machine having the second wireless communicator when a signal intensity of radio wave received from the second wireless communicator by the first wireless communicator is equal to or more than a threshold intensity.. . ... Kubota Corporation

08/02/18 / #20180213718

Traveling vehicle

A traveling control section of a traveling vehicle is configured to effect a normal operation to control an output of an engine when a vehicle speed is below a set vehicle speed, such that the engine output may correspond to an operation amount of an accelerator operating tool and to effect an output suppressing operation when the vehicle speed is equals to or more than the set vehicle speed, such that the vehicle speed may stay below the set vehicle speed, irrespectively of the operation amount of the accelerator operating tool. A fuel ratio in an air-fuel ratio in the output suppressing operation is set smaller than a fuel ratio in an air-fuel ratio in the normal operation.. ... Kubota Corporation

07/26/18 / #20180210456

Travel route generation device and travel route generation method

A travel route generation device includes circuitry configured to define a shape of a work field by calculating a first line connecting a starting point and one of intermediate points, and a second line connecting another of the intermediate points and an end point. The circuitry is configured to calculate a shape of an entrance passage in the work field though which a work vehicle is to enter a target work region in which the work vehicle is to work in the work field. ... Kubota Corporation

07/26/18 / #20180210449

Work vehicle management system and work vehicle management method

A work vehicle management system includes a memory, first circuitry, second circuitry, third circuitry, and fourth circuitry. The memory is to store at least one halt record with respect to a halt status at a timing when a work vehicle is halted while traveling along a travel route in a work field. ... Kubota Corporation

07/26/18 / #20180210444

Sensor management device and sensor management method

A sensor management device includes first circuitry and second circuitry. The first circuitry is configured to output an instruction to position a target obstacle on a detectable region of at least one obstacle sensor provided on a work vehicle to detect an obstacle. ... Kubota Corporation

07/26/18 / #20180210443

Autonomous travelling work vehicle, and method for controlling autonomous travelling work vehicle

An autonomous travelling work vehicle includes at least one obstruction sensor and circuitry. The at least one obstruction sensor is to detect an obstruction in a travel route along which the autonomous travelling work vehicle is configured to travel. ... Kubota Corporation

07/26/18 / #20180210440

Wireless management system for work vehicles and method for managing work vehicles in wireless management system

A wireless management system for work vehicles includes a first communication device and a second communication device. The first communication device is configured to perform wireless communication in frequency bands to control the work vehicles. ... Kubota Corporation

07/26/18 / #20180210092

Work-vehicle position measurement system, work vehicle, and work-vehicle position measurement method

A work-vehicle position measurement system includes a reference station and a work vehicle. The reference station is provided at a reference position to measure a measured position of the reference position by receiving a radio wave from a satellite and to transmit reference information including the measured position. ... Kubota Corporation

07/26/18 / #20180209869

Behavior estimation method for fault-crossing underground pipeline and behavior estimation device for fault-crossing underground pipeline

A behavior estimation method includes a first step of calculating number of earthquake resistant joints required for absorbing a fault displacement amount in a pipe orthogonal direction, based on an allowable deflection angle and a pipe effective length, and calculating a deflection range in a pipe axis direction, a second step of calculating a load, received by the pipe due to relative displacement between the pipe and ground corresponding to a ground spring model in the pipe orthogonal direction defined with spring constants respectively for relative displacements smaller and larger than a predetermined relative displacement, a third step of calculating a bending moment distribution of joint positions from a bending moment of a trapezoidal distribution load, and obtaining a pipe deflection angle at each of the joint positions based on a predetermined joint deflection spring model, and a deflection performance evaluation step.. . ... Kubota Corporation

07/26/18 / #20180209799

Travel route generation device and method for generating travel route for field work vehicle

A travel route generation device for a field work vehicle includes a memory and circuitry. The circuitry is configured to generate, based on field data stored in the memory, a travel route. ... Kubota Corporation

07/26/18 / #20180209793

Work vehicle, display method for work vehicle, and display system

A work vehicle includes a memory, a sensor, circuitry, and a display. The memory is to store a target travel route in a work field. ... Kubota Corporation

07/26/18 / #20180209792

Division map creation system and method for creating division maps

A division map creation system includes circuitry and a memory. The circuitry is configured to acquire work field information including a shape of a work field and a position of the work field and to acquire travel routes based on the work field information. ... Kubota Corporation

07/26/18 / #20180208242

Automatic traveling work vehicle, steering controller for automatic traveling work vehicle, and steering control method for automatic traveling work vehicle

An automatic traveling work vehicle includes a memory to store work traveling information including information on work which a work device is configured to perform and on a state of a work field in which the automatic traveling work vehicle is configured to automatically travel along a target travel route. Circuitry is configured to calculate a vehicle position of the automatic traveling work vehicle, to calculate a track deviation of a vehicle body from the target travel route based on the target travel route and the vehicle position, to calculate a steering sensitivity based on at least one of the information on the work and the information on the state of the work field, and to calculate, based on the track deviation and the steering sensitivity, a steering control amount according to which the steering is controlled.. ... Kubota Corporation

07/26/18 / #20180208059

Work vehicle, control method for work vehicle, and cooperative work vehicle monitoring system

A work vehicle includes a display, communication circuitry, and circuitry. The display is to display information. ... Kubota Corporation

07/26/18 / #20180206392

Work vehicle and obstruction detection method for work vehicle

A work vehicle includes a vehicle body, at least one obstruction sensor, at least one state sensor, and circuitry. A work device is attachable to the vehicle body. ... Kubota Corporation

07/26/18 / #20180206391

Travel control apparatus and travel control method

A travel control apparatus for a work vehicle includes a display and circuitry. The display is to display a position of the work vehicle. ... Kubota Corporation

07/26/18 / #20180206390

Travel route generation device and travel route generation method

A travel route generation device includes a memory, an input interface, and circuitry. The memory is to store field data including shape information on a shape of a field in which a work vehicle is to work. ... Kubota Corporation

07/26/18 / #20180206389

Work vehicle and display control method for work vehicle

A work vehicle includes a touch-panel display, at least one first physical button, and the circuitry. The touch-panel display is to display at least one first touch button, at least one first function, and work information. ... Kubota Corporation

06/28/18 / #20180180068

Hydraulic system for working machine

A hydraulic system for a working machine includes a hydraulic actuator having a first fluid chamber and a second fluid chamber, an accumulator, an outputting fluid tube to output an operation fluid, and a switching valve to be switched between a first position and a second position. The first position allows the first fluid chamber and the second fluid chamber to be communicated with the outputting fluid tube and thereby allowing a floating operation. ... Kubota Corporation

06/28/18 / #20180179984

Cooling structure of water-cooled engine

A cooling structure of a water-cooled engine includes: a plurality of cylinders 2 arranged in a cylinder block 1; and a water jacket w formed around the plurality of cylinders 2. The water jacket w includes a pair of main flow paths 7, 8 formed in a state of extending in a cylinder arrangement direction outside the cylinders, and inter-bore flow paths 9, 10 formed between adjacent cylinders 2 in a state of connecting the pair of main flow paths 7, 8. ... Kubota Corporation

06/28/18 / #20180179927

Engine

An engine is provided which includes an oil gallery, a base attaching seat in an engine frame wall, and a base for component mounting attached to the base attaching seat. An oil cooler and an oil filter are mounted on the base for component mounting, and the base attaching seat is provided with an oil inlet communicating with an upstream-side passage of the oil gallery, and an oil outlet communicating with a downstream-side passage of the oil gallery. ... Kubota Corporation

06/28/18 / #20180179925

Work vehicle having oil equipment

A work vehicle includes a vehicle body frame supported on a ground surface by wheels, a reinforcing plate provided in the vehicle body frame, an oil equipment using oil, and a drain pan configured to receive and discharge the oil discharged from the oil equipment. The reinforcing plate defines a drain hole extending vertically therethrough. ... Kubota Corporation

06/28/18 / #20180179736

Hydraulic system for working machine

A hydraulic system for a working machine includes a first hydraulic apparatus to be activated by the operation fluid, a second hydraulic apparatus being configured to be activated by the operation fluid, a first operation valve to control the operation fluid to be supplied to the first hydraulic apparatus, a second operation valve to control the operation fluid to be supplied to the second hydraulic apparatus, a first fluid tube connecting the first operation valve to the first hydraulic apparatus, a second fluid tube connecting the first operation valve to the second hydraulic apparatus, a third fluid tube connecting the first fluid tube to the second fluid tube, and an outputting fluid tube connected to any one of the first operation valve and the second operation valve and configured to output the operation fluid supplied from any one of the first fluid tube and the second fluid tube.. . ... Kubota Corporation

06/28/18 / #20180177125

Combine and grain evaluation control apparatus for combine

A combine for reaping culms in a field while traveling, and accumulating, in a grain tank 2, grains obtained by threshing reaped culms, includes: a yield calculator for calculating a yield per unit of travel, which is a yield per unit of travel distance; a work travel determiner 53 for determining non-harvest work travel that does not involve grain harvesting, and harvest work travel that involves grain harvesting; a harvest map data generator 66 for generating harvest map data in which the yield per unit of travel, a travel route on which the combine has traveled in a field, and a result of determination performed by the work travel determiner are associated with one another; and a harvest information recorder for recording the harvest map data.. . ... Kubota Corporation

06/28/18 / #20180177123

Work vehicle

A work vehicle includes an imaging device for imaging a plant growing in a field and a control device for controlling a sowing device. The control device includes a growth state determination section for determining a growth state of the plant in the field based on result of imaging by the imaging device and a sowing instruction section for instructing the sowing device to carry out a seed sowing operation based on result of determination of the growth state determination section.. ... Kubota Corporation

06/21/18 / #20180173233

Automatic traveling work vehicle and method for monitoring automatic traveling work vehicle

An automatic traveling work vehicle includes position calculation circuitry, actual work command generation circuitry, work control circuitry, virtual work command generation circuitry, and monitoring circuitry. The actual work command generation circuitry is configured to generate an actual work command in accordance with a position of the automatic traveling work vehicle. ... Kubota Corporation

06/21/18 / #20180171840

Engine head cover

In an engine head cover, an upper portion of a partition plate 5, which partitions an inside of a head cover 3 into upper and lower portions, forms a blowby gas passage w having an inlet 6 and an outlet 7 communicating with an intake path 9. A pcv valve 14 disposed on the outlet 7 side, a filter 13 disposed on the inlet 6 side, and a labyrinth 15 disposed between the pcv valve 14 and the filter 13 are provided. ... Kubota Corporation

06/21/18 / #20180170258

Work vehicle and image displaying method for work vehicle

A work vehicle includes a vehicle body, cameras, circuitry, and a display. The vehicle body has a peripheral area surrounding the vehicle body and a work equipment attachable to the vehicle body. ... Kubota Corporation

06/21/18 / #20180169667

Bucket for swinging rotor of centrifugal separator

There can be provided a bucket for a swinging rotor of a centrifugal separator that can be readily carried while ensuring the sealability at the time of a centrifugal treatment or the carriage operation. The bucket includes a bucket body (11) in a bottomed cylindrical shape, a cover main body (21) (cover), a packing (22) (seal member), and a pair of attachment mechanisms (34) configured to detachably attach the cover main body (21) to the bucket body (11). ... Kubota Corporation

06/21/18 / #20180168100

Combine harvester

There is a need for a combine harvester which may enhance the detection precision of a gain culm sensor by reliably bringing grain culms into contact with the grain culm sensor. The combine harvester includes: a harvest frame 11 that receives grain culms cut by a reaping device; a rake-in auger 12 that is disposed within the harvest frame 11 so as to be rotatable about a rotary axis x1 extending in a right/left direction of the harvester body, and that conveys the grain culms inside the harvest frame 11 in a right/left direction of the harvester body and rakes in the grain culms toward the rear of the harvester body; and a feeder 13 that is communicatively connected to a rear wall of the harvest frame 11, and that conveys the grain culms raked in by the rake-in auger 12 toward the rear of the harvester body. ... Kubota Corporation

06/21/18 / #20180168093

Work vehicle and method for controlling work vehicle

A work vehicle includes a memory and circuitry. The memory is to store a travel route and work action information based on which the work vehicle is to execute at least one work action while the work vehicle travels based on the travel route. ... Kubota Corporation

06/14/18 / #20180164117

Travel route generation apparatus and method for generating travel route

A travel route generation apparatus includes a work field data input interface, a handwriting input interface, a memory, and circuitry. Work field data are to be input via the work field data input interface. ... Kubota Corporation

06/14/18 / #20180163841

Work vehicle

A work vehicle includes a stepless speed changer device having a drive pulley receiving input of power of an engine, a driven pulley, and an endless rotary body wound around and entrained between the the drive pulley and the driven pulley and an accommodating body having an accommodation space for accommodating the drive pulley, the driven pulley and the endless rotary body. The accommodation space includes an air passage for causing air introduced from the outside to flow from the driven pulley side to the drive pulley side to be eventually discharged to the outside.. ... Kubota Corporation

06/14/18 / #20180163599

Exhaust purifying apparatus

An exhaust purifying apparatus is provided, that can be manufactured at low manufacturing costs and is capable exhibiting high exhaust purifying performance. The exhaust purifying apparatus includes an exhaust passage, and an exhaust purifying member disposed in the exhaust passage. ... Kubota Corporation

06/14/18 / #20180163375

Hydraulic system for working machine

A hydraulic system for a working machine includes an fluid cooler including an input port and an output port, the fluid cooler being configured to cool an operation fluid, an outputting portion to output the operation fluid, a traveling hydraulic device to be activated by the operation fluid, an operating hydraulic device to be activated by the operation fluid, a first output fluid tube connecting the operating hydraulic device to a tank, a second output fluid tube branching from the first output fluid tube and being connected to the input port of the fluid cooler, a third output fluid tube connecting the outputting portion to the output port of the fluid cooler, a fourth output fluid tube connected to the traveling hydraulic device, the fourth output fluid tube being connected to the second output fluid tube, and a first check valve disposed on the fourth output fluid tube.. . ... Kubota Corporation

06/14/18 / #20180160619

Work vehicle

A work vehicle includes a first detection unit that detects an optical beam emitted from a beam projector disposed at one end of a reference travel path, a first position deviation calculation section that calculates position deviation by a vehicle body from the reference travel path based on a detection signal from the first detection unit, a second detection unit that detects a work boundary line that occurs due to work travel, a second position deviation calculation section that calculates position deviation of the vehicle body traveling along successive travel paths from the work boundary line based on a detection signal from the second detection unit, and a steering information generation section that, based on the position deviation calculated by the first position deviation calculation section and the second position deviation calculation section, generates steering information for correcting the position deviation.. . ... Kubota Corporation

06/14/18 / #20180160618

Work vehicle

A work vehicle includes a cutter device for cutting plant in a field, a storage section for storing plant cut by the cutter device, an inclination angle sensor for detecting an inclination angle ((θd)) of the vehicle body, a display device for displaying the inclination angle detected by the inclination angle sensor, and a reporting device for reporting the inclination angle exceeding a permissible inclination angle ((θa)).. . ... Kubota Corporation

06/07/18 / #20180154765

Work vehicle

A work vehicle is disclosed that includes an elastic support mechanism for supporting an exhaust muffler. The elastic support mechanism includes a support platform member, an elastic cylindrical members and an bar-shaped member. ... Kubota Corporation

06/07/18 / #20180153100

Grain management system and combine

A grain management system includes a combine and a management server 8. The combine includes a grain measurer 30 for outputting a measured value related to a component of harvested grains supplied to a grain tank 16, and a data transmitter 51a for transmitting the measured value and field identification information for specifying the field to the management server 8 via a communication line. ... Kubota Corporation

05/24/18 / #20180142770

Shift power transmission apparatus and travel power transmission device

Disclosed is a shift power transmission apparatus for readily suppressing or avoiding size increase thereof. The apparatus includes an input shaft (22) receiving engine drive force, a hydraulic continuously variable transmission (30) driven by the input shaft (22), a planetary power transmission section (40) combining drive force from the input shaft (22) and output from the hydraulic continuously variable transmission (30) for outputting the combined drive force, and an output rotary member (24) outputting power to a travel apparatus. ... Kubota Corporation

05/17/18 / #20180136664

Work vehicle support system

A work vehicle support system includes: an own vehicle position detecting module configured to detect an own vehicle position of a work vehicle; and a work-unfinished region outer-shape map calculating section configured to calculate, during circulating work-traveling along an outer perimeter of a work scheduled region, an outer-shape map of a work-unfinished region in the work scheduled region, from own vehicle position data acquired by the own vehicle position detecting module.. . ... Kubota Corporation

05/17/18 / #20180135748

Assembly for regulating ground speed of vehicle

An assembly for regulating ground speed of a vehicle includes a shift arm fixed to the transmission shaft, a main shaft, a control arm connected to the main shaft, a shift rod transmitting pivotal movement of the control arm to the shift arm, a first pedal unit acting as a seesaw pedal unit, and a second pedal unit acting as a dual pedal system, and a common lever element transmitting pivotal movement caused by the first pedal unit or the second pedal unit to the control arm. The first pedal unit and the second pedal unit are replaceable with each other.. ... Kubota Corporation

05/17/18 / #20180135659

Control valve and work vehicle having the control valve

An inner oil passage (45) is formed inside a slidable spool (22). The slidable spool (22) defines, in its circumferential face, a first opening (46), a second opening (47) and a third opening (48). ... Kubota Corporation

05/17/18 / #20180134183

Work vehicle

Provided is a work vehicle having a rollover protection structure (rops) around a driver's seat which is switchable between a front seating posture and a rear seating posture. A locking mechanism locks the driver's seat to the rear seating posture. ... Kubota Corporation

05/17/18 / #20180134179

Work vehicle

A work vehicle provided with a boarding section and an engine is disclosed. The boarding section is provided with a seat that allows an occupant to be seated thereon. ... Kubota Corporation

05/17/18 / #20180132419

Combine harvester

A combine harvester includes a conveyance mechanism for conveying grains obtained by a thresher for threshing grain culms reaped from a field to a grain tank, a measurer (340) for measuring the amount of grain conveyed to the grain tank as a conveyed yield, a yield assignment calculator (631) for calculating a minimal section yield, which is a yield per minimal section, by assigning the conveyed yield to a minimal section in the field, a grain conveyance state detector (632) for detecting a grain conveyance state of the conveyance mechanism (7), a yield corrector (633) for correcting the minimal section yield in accordance with the grain conveyance state, and a yield distribution data generator (661) for generating yield distribution data that represents a yield distribution in the field, based on the minimal section yield.. . ... Kubota Corporation

05/10/18 / #20180125006

Mower unit and mower machine

[summary] a mower unit includes an idler pulley unit and a single belt routed around an output pulley of a drive source, the idler pulley unit and a plurality of blade pulleys. The idler pulley unit includes a first idler pulley, a second idler pulley and a tension idler pulley. ... Kubota Corporation

05/10/18 / #20180125004

Mulching mower unit

A mulching mower unit includes a mower deck, a rotary shaft, a blade, a shroud, and a deflector plate. The shroud has a circumferential wall including a rotational trajectory of the blade, and extends downward from a bottom surface of the mower deck to an area adjacent to the blade. ... Kubota Corporation

05/03/18 / #20180119380

Joint mechanism and connection method for steel pipe

Contemplated are simplification and cost reduction in arrangement of connecting a pair of steel pipes to each other. A joint mechanism for a pair of steel pipes 1a, 1b include inner joints 10a, 10b and an outer joint 20 disposed circumferentially across and between the inner joints 10a, 10b. ... Kubota Corporation

05/03/18 / #20180117551

Method for controlling rapid stirrer, and rapid stirrer

In a rapid stirrer that stirs sludge and a flocculant in a tank with a stirring blade, the rotation speed of the stirring blade is increased at a set rate with an increase in the amount of charged sludge, the rotation speed of the stirring blade is reduced at the set rate with a decrease in the amount of charged sludge, and flocculated flocs having a fixed floc diameter are stably generated even when operating conditions change so as to fluctuate the amount of charged sludge.. . ... Kubota Corporation

04/19/18 / #20180105032

Work vehicle

Provided is a work vehicle in which a seat support frame that supports a driver seat is equipped on a vehicle body frame, the vehicle body frame includes: a front portion vehicle frame at which a floor surface of a driving portion is provided; and a rear portion vehicle frame disposed at a position higher than the floor surface of the driving portion and rearward of the front portion vehicle frame. An engine is equipped below the rear portion vehicle frame, a battery that supplies power to an electric motor is equipped above the front portion vehicle frame and below the seat support frame, and a frame portion of the seat support frame that exists above the battery at a position opposing the battery is configured to be detachable from another frame portion that is fixed to the vehicle body frame.. ... Kubota Corporation

04/19/18 / #20180104987

Work vehicle

A work vehicle includes a vehicle frame, a rotating connection unit provided in the vehicle frame, and a caster assembly connected to the rotating connection unit. The rotating connection unit includes a housing sleeve, a swivel post, a first bearing and a second bearing supporting the swivel post to be rotatable within the housing sleeve, and a rotation stopper disposed between the swivel post and the housing sleeve to stop rotation of the swivel post. ... Kubota Corporation

04/19/18 / #20180104661

Rapid stirring machine

A rapid stirring machine including a tank for stirring sludge and a flocculant; a drive shaft disposed in the tank; and an edged turbine blade attached to the drive shaft, the edged turbine blade including turbine blades that are disposed along a virtual circle centered around the axis of the drive shaft, on at least one of the front and back sides of the edged turbine blade in the axial direction of the drive shaft, the turbine blades being raised in the axial direction of the drive shaft.. . ... Kubota Corporation

04/05/18 / #20180094656

Working machine

A working machine includes a vehicle body, a travel apparatus provided to a rear portion of the vehicle body, a fender provided above the travel apparatus, and hydraulic piping that is disposed between the travel apparatus and the fender and that extends from a front-portion side to a rear-portion side of the fender.. . ... Kubota Corporation

03/29/18 / #20180087478

Work machine

A work machine includes an engine, a fluid path via which a fuel oil is supplied to the engine, a first filter provided in the fluid path, a pump provided between the engine and the first filter in the fluid path to suck and output the fuel oil, a second filter provided between the engine and the pump in the fluid path, and a third filter provided between the engine and the second filter in the fluid path.. . ... Kubota Corporation

03/29/18 / #20180084716

Farm work machine, farm work management method, farm work management program, and recording medium recording the farm work management program

A farm work machine (1) operable in a variety of work modes includes a communications unit (5) that reads farm work information for a selected target farm work sector from a database of a management center storing the farm work information for each farm work sector, a work mode setting unit (46) which sets work modes, a work mode comparison unit (53) that effects comparison between a set work mode set by the work mode setting unit and a registered work mode included in farm work information read from the database, and a display data generation unit (55) that generates display data in order to display, on a display, the read farm work information and a result of the comparison effected by the mode comparison unit.. . ... Kubota Corporation

03/22/18 / #20180077859

Mid-mount riding grass mower

A mid-mount riding grass mower includes a belt transmission device attached to an upper portion of a mower unit, and a cover unit that covers the belt transmission device. The cover unit includes a lower cover extending upward from a position on more traveling vehicle body outer side than the belt transmission device in a mower deck, and right and left side covers detachably attached to right and left end portions of the traveling vehicle body. ... Kubota Corporation

03/08/18 / #20180069275

Battery pack

A battery pack includes a plurality of battery modules stacked with connecting terminals disposed at predetermined positions, a holding unit for holding the plurality of battery modules under the stacked state, a plurality of conducting paths connecting corresponding connecting terminals, and a substrate connected to the holding unit. The plurality of conducting paths are provided integrally in the substrate and disposed to connect the corresponding connecting terminals in association with connection of the substrate to the holding unit.. ... Kubota Corporation

03/08/18 / #20180066570

Lawn mower

A lawn mower includes a pair of left and right main frames 17, an engine e mounted to the pair of left and right main frames 17, a radiator for cooling water that cools the engine e, a cooling fan 11 for feeding cooling air to the radiator, and a hood 9 accommodating the engine e, the radiator and the cooling fan 11. An air deflector plate 34 is provided between the pair of left and right main frames 17 and configured to change direction of cooling exhaust air flowing toward a ground surface.. ... Kubota Corporation

03/08/18 / #20180065457

Work vehicle

A work vehicle includes a front control tower provided forwardly of a driver's seat, a battery accommodated inside the front control tower, and a bottom member that provides a bottom of the front control tower. The battery is mounted on the bottom member.. ... Kubota Corporation

03/01/18 / #20180056772

Tractor

A tractor includes an engine that is mounted on a vehicle body frame, a hood that houses the engine and is configured to pivot about a front pivot in a top-bottom direction between a closed position at which the hood covers the engine, and an open position at which the hood exposes the engine, a mounting rubber that is provided between the engine and the vehicle body frame to support the engine in an anti-vibration manner, and a hood stay that supports the hood such that the hood is pivotable up/down about the front pivot. The hood stay includes an abutting-target portion against which the engine can abut from a rear side, to prevent the engine from swinging forward in a front-rear direction of the vehicle body.. ... Kubota Corporation

02/22/18 / #20180050729

Work vehicle

A work vehicle according to the present invention includes: a recessed portion (4) that is provided in a lateral side surface (31a) of an engine hood (30) and is recessed from the lateral side surface (31a) toward the inside of the engine hood (30). The recessed portion (4) includes a recessed portion bottom surface (41) that is recessed inward from the lateral side surface (31a) of the engine hood (30), and a peripheral wall portion (42) that is continuous with a peripheral edge of the recessed portion bottom surface (41) and a peripheral edge of a recessed portion inlet opening (40) that is formed in the lateral side surface (31a). ... Kubota Corporation

02/15/18 / #20180044885

Working machine

A working machine includes a travel device, a motive power transmission device configured to transmit a motive power to the travel device, a transmission case configured to house the motive power transmission device, and a hydraulic operation fluid tank disposed on an upper surface of the transmission case.. . ... Kubota Corporation

02/15/18 / #20180043926

Electric power steering unit with offset link mechanism

Disclosed is a vehicle including a steering wheel arranged offset toward one side in a vehicle body right/left direction, and an electric power steering unit. The electric power steering unit includes a link mechanism operably connected to the steering wheel and extending from a right/left center side of the steering wheel toward a vehicle body right/left center side to be operably connected to a wheel side, an assist device for the link mechanism, a control lever arranged adjacent the vehicle body right/left center in the vicinity of the steering wheel, a rotation shaft operably connected to the control lever to be rotated about a right/left axis that extends in the vehicle body right/left direction, and a control cable operably connected to the rotation shaft. ... Kubota Corporation

02/15/18 / #20180042175

Combine for measuring the weight of grain retained in a grain tank

A combine that can accurately measure the weight of grain retained in a grain tank is provided. When a weight measurement signal is output from a measurement switch 66, a weight measurement decision unit 75 instructs a working state determination unit 71 to perform working state determination. ... Kubota Corporation

02/08/18 / #20180038460

Work vehicle

A work vehicle having a belt type stepless speed changing mechanism includes a rotation detecting section for detecting an engine rotational speed, a vehicle speed detecting section for detecting a vehicle speed of a traveling vehicle body and an informing section configured to effect an alarm informing for alarming wear of a drive belt if a vehicle speed detected by the vehicle speed detecting section is a predetermined vehicle speed deviates from a preset permissible range.. . ... Kubota Corporation

01/25/18 / #20180027179

Work vehicle and image displaying method for work vehicle

A work vehicle includes circuitry configured to determine a focused area based on signals detected by work and travel situation detection sensors. The circuitry is configured to determine a prioritized display image among images captured by cameras, the prioritized display image including the focused area. ... Kubota Corporation

01/25/18 / #20180026244

Electric work vehicle

An electric work vehicle includes a battery container provided in a traveling vehicle body and including a guiding unit, and a battery pack removably attached to the battery container and including a guided unit. A pair of rollers are provided in one of the guiding unit and the guided unit, and a pair of engaging portion to be engaged with the rollers are provided in the other of the guiding unit and the guided unit. ... Kubota Corporation

01/25/18 / #20180025560

Work vehicle and abnormality notification method for work vehicle

A work vehicle includes travelling work state detection sensors to detect a travelling work state of the work vehicle to output detected signals indicating the traveling work state. Circuitry is configured to determine that an early abnormality occurs when the detected signals satisfy a first condition, the work vehicle being in an early stage of trouble in travelling due to the early abnormality. ... Kubota Corporation

01/25/18 / #20180024563

Work vehicle, slope travel control system for work vehicle, and slope travel control method for work vehicle

A work vehicle to travel along a travel route includes a vehicle body, an inclination sensor, a calculator, an information generator, and a recorder. The inclination sensor is provided on the vehicle body to detect a vehicle body inclination angle with respect to a horizontal line. ... Kubota Corporation

01/11/18 / #20180011495

Route search method, route search system, non-transitory computer-readable storage medium, and work vehicle

A route search system for a work vehicle includes a receiver, a processor, and a controller. The receiver is to obtain a reference position of the work vehicle. ... Kubota Corporation

01/04/18 / #20180003093

Oil cooling structure of engine

An oil cooling structure of an engine is provided that is capable of enhancing cooling performance of oil while preventing an increase in number of components or an increase in required space from being involved as much as possible. In an oil cooling structure of an engine in which a transmission case is attached to one end wall of an engine body, and a transmission mechanism for an accessory drive is provided in the transmission case, the transmission case is formed into a potlid-shaped body having a plurality of rib walls along a front-rear direction, and is attached to an engine front wall with an engine cooling fan, and case inner chamber portions partitioned by the rib walls in the transmission case are configured as a transporting passage of oil circulated by an oil pump.. ... Kubota Corporation

12/28/17 / #20170370422

Work vehicle

A work vehicle including: a transmission unit that is provided with, on a shaft that is provided in a power transmission path leading from an input shaft to a power transmission shaft but is not a speed change shaft, a gear member that has an engagement recess, and a claw member having an engaging claw that engages with the engagement recess and to which rotational power is transmitted. There are gaps in a rotational direction between the engaging claw and both ends, in the rotational direction, of the engagement recess.. ... Kubota Corporation

12/28/17 / #20170370397

Device with adjustment bolt

A device with an adjustment bolt includes a bolt attachment wall, an adjustment bolt screwed with an internal thread hole of the bolt attachment wall, a locknut screwed with the adjustment bolt, a cover that surrounds the adjustment bolt and the locknut, and a stopper unit that prevents removal of the cover from the locknut. The stopper unit includes an inner circumference groove of the cover fitted around a c-shaped retaining ring, and an external circumference groove of the locknut fitting within the retaining ring. ... Kubota Corporation

12/28/17 / #20170370266

Exhaust treatment device for diesel engine

An exhaust treatment device for a diesel engine is provided, which includes a parked regeneration requirement notification component and a parked regeneration start operation component. A regeneration process of the diesel particulate filter (dpf) includes an automatic regeneration process and a parked regeneration process. ... Kubota Corporation

12/28/17 / #20170370256

Blow-by gas return structure

An improved blow-by gas return structure minimizes the occurrence of a drawback caused by freezing at a low temperature by bringing a state where freezing minimally occurs in a blow-bay gas passage such as a pipe disposed outside an engine. The blow-by gas return structure is configured such that a blow-by gas is introduced into an intake manifold through an inner passage formed in a head cover. ... Kubota Corporation

12/28/17 / #20170370073

Work machine

A work machine includes a prime mover, a hydraulic pump to be operated by the prime mover to output an operation fluid, a hydraulic device to be operated by the operation fluid, a measurement sensor to measure a first temperature and a second temperature, the first temperature being a temperature of the operation fluid at starting of the prime mover, the second temperature being a temperature of the operation fluid after the starting of the prime mover, and a controller including a determiner to determine an upper limit revolution speed based on the first temperature, the upper limit revolution speed being an upper limit of a revolution speed of the prime mover, and a changer to change the upper limit revolution speed based on the second temperature.. . ... Kubota Corporation

12/28/17 / #20170369097

Work vehicle axle device

Work vehicle axle device includes a wheel drive case utilizing a centrally disposed vertically extending first coupling portion, a centrally disposed vertically extending second coupling portion spaced from the first coupling portion and an input shaft located below an upper end of either the first or second coupling portions and being configured to transmit rotational power to wheels. The first and second coupling portions are configured to pivotally mount to the wheel drive case to a vehicle body of the work vehicle in a manner that allows the wheel drive case to pivot about an axis that, when viewed from above, is at least one of parallel to a front to back direction of the vehicle body and parallel to a centrally disposed front to back axis of the vehicle body.. ... Kubota Corporation

12/28/17 / #20170368932

Drive device for pto shaft of working machine

A drive device for a pto shaft includes a parking switch to detect a parking state of a vehicle body, a permission switch constituted of a self-returning switch and connected to the parking switch, the permission switch being configured to be switched to permit driving a pto shaft, the pto shaft being configured to be driven by a power of a prime mover disposed on the vehicle body, and a first switch device to be switched to enable the pto shaft to be driven when the permission switch is switched to permit driving the pto shaft under a state where the parking switch detects the parking state of the vehicle body.. . ... Kubota Corporation

12/28/17 / #20170368898

Suspension assembly for utility vehicle

A suspension assembly for a utility vehicle includes a knuckle having a boss, a first suspension arm extending radially outward from the boss, a second suspension arm extending radially outward from the boss in a direction opposite to the first suspension arm, a first brake arm extending radially outward from the boss near the first suspension arm, and a second brake arm extending radially outward from the boss near the second suspension arm. The knuckle can be switchably used for both of a right driving wheel and a left driving wheel. ... Kubota Corporation

12/28/17 / #20170367252

Travel support system, travel support method, and work vehicle

A travel support system for a work vehicle including a vehicle body and a work device provided on the vehicle body includes a first calculator to calculate a vehicle body occupied area including the vehicle body in a plan view. A second calculator is to calculate a work device occupied area including the work device in the plan view. ... Kubota Corporation

12/21/17 / #20170362799

Work machine and method for controlling work machine

A work machine includes an engine, a motor-generator, a battery, a power detector, a temperature detector, and circuitry. The engine is to move the work machine. ... Kubota Corporation

12/21/17 / #20170362797

Work machine

A work machine includes a machine body, an engine, a rotary electrical device, and an electric power controller. The engine is provided on the machine body to move the machine body. ... Kubota Corporation

12/21/17 / #20170362796

Work machine

A work machine includes a machine body, an engine, a rotary electrical device, and a battery. The engine is provided on the machine body to move the machine body. ... Kubota Corporation

12/14/17 / #20170355372

Work vehicle with speed control system

Work vehicle having a coupling member which is switchable between a coupled state where left/right brake operation tools are integrally coupled and a released state releasing the coupling. A coupled state detector is utilized. ... Kubota Corporation

12/07/17 / #20170350344

Piston for engine

A piston for an engine is provided, that makes it possible to improve supply of engine oil to a recessed part thereof. The piston includes a resin coating film and a recessed part on a surface of a skirt part. ... Kubota Corporation

12/07/17 / #20170350095

Hydraulic system for work machine

A hydraulic system for a work machine includes an operation member, a prime mover, a hydraulic pump driven by the prime mover, the hydraulic pump configured to output an operation fluid, a first temperature sensor to measure a temperature of the operation fluid, a first fluid tube connected to the hydraulic pump, an operation valve connected to the first fluid tube, the operation valve configured to control, in accordance with an operation extent of the operation member, a pressure of the outputted operation fluid, a hydraulic apparatus driven by the operation fluid outputted from the operation valve, a second hydraulic tube connecting the operation valve to the hydraulic apparatus, a discharge fluid tube to discharge the operation fluid included in the second fluid tube; and an actuation valve disposed on the discharge fluid tube, the actuation valve configured to control an aperture of the actuation valve based on the temperature.. . ... Kubota Corporation

11/30/17 / #20170342885

Exhaust gas purification system and method for a work vehicle

A work vehicle includes an engine, a battery, an exhaust gas purification system or device, and a notification device. The exhaust gas purification system or device is capable of performing a purification process purifying exhaust gas of the engine, and operates with electric power from the battery and performs an end process. ... Kubota Corporation

11/09/17 / #20170320423

Work vehicle

A work vehicle is provided with a driving section (5), and a load carrying deck (6) disposed rearwardly of the driving section (5). The load carrying deck (6) is configured to be pivotally liftable between an elevated posture in which a front end portion of the deck (6) is elevated, and a lowered posture in which the front end portion of the deck (6) is lowered. ... Kubota Corporation

10/26/17 / #20170306468

Cast product having alumina barrier layer

The present invention provides a cast product that can further enhance the stability of an alumina barrier layer and can exhibit further superior oxidation resistance, carburization resistance, nitriding resistance, corrosion resistance, and the like when used under a high-temperature atmosphere. The cast product according to the present invention is a cast product having an alumina barrier layer including an aluminum oxide on a surface of a matrix, and the aluminum oxide is (al(1-x)m(x))2o3, where m is at least one of cr, ni, si, and fe, and x satisfies a relationship 0<x<0.5. ... Kubota Corporation

10/12/17 / #20170292540

Hydraulic system for work machine and work machine

A hydraulic system for a work machine includes a tank to store an operation fluid, a hydraulic device to be operated by the operation fluid, a control valve to control the hydraulic device, a first fluid tube connecting the hydraulic device and the control valve, the first fluid tube being to supply the operation fluid from the control valve to the hydraulic device, a second fluid tube branching from the first fluid tube and connected to the tank, a switch valve provided to the second fluid tube, the switch valve being to control a flow rate of the operation fluid, and an oil cooler provided to the second fluid tube between the switch valve and the tank.. . ... Kubota Corporation

10/05/17 / #20170285681

Work machine

A work machine includes an unload lever swingably supported by an operation box, the unload lever being configured to be swung to select whether or not to supply an operation fluid to the hydraulic actuator. The unload lever includes a second guide pin to move in a first guide groove in accordance with the swinging of the unload lever, the second guide pin being positioned on a first end of the first guide groove when the unload lever is positioned to a pushed-down position and positioned on a second end of the first guide groove when the unload lever is positioned to a pulled-up position. ... Kubota Corporation

10/05/17 / #20170284425

Hydraulic system for work machine

A hydraulic system for a work machine includes a first switch valve and a first return circuit. The first switch valve is switchable between a confluent position and an isolation position. ... Kubota Corporation

10/05/17 / #20170284063

Hydraulic system for work machine

A hydraulic system for a work machine includes a hydraulic bump to output an operation fluid, a hydraulic switch valve to be switched among switching positions in accordance with a pressure of the operation fluid, a proportional valve to change the pressure of the operation fluid applied to the hydraulic switch valve, a travel hydraulic device to change a thrust power in accordance with the switching positions of the hydraulic switch valve. And, the hydraulic system includes a controller to control the proportional valve in accordance with a state of the travel hydraulic device.. ... Kubota Corporation

10/05/17 / #20170282934

Hydraulic system for work machine

A hydraulic system for a work machine includes a prime mover, a setup member, a hydraulic pump, an operation valve, a hydraulic device, and a memory. The memory stores first control characteristics indicating relations between the first pressure and an actual revolution speed of the prime mover, and stores a second control characteristic indicating a relation between the first pressure and the actual revolution speed of the prime mover. ... Kubota Corporation

10/05/17 / #20170282733

Portable charger device, contactless charger system for electric work vehicle and electric grass mower machine

A portable charger device 200 includes a charger device side battery 3, a first charging control section 31 for non-quick charging of the charger device side battery 3 by power supply from an external power source 8, and a second charging control section 32 for quick charging of a vehicle side battery 4 mounted on an electric vehicle 100 by power supply from the charger device side battery 3.. . ... Kubota Corporation

09/28/17 / #20170274892

Work vehicle

A torque upper limit value changing section increases an upper limit value of a torque instruction value in a powering range in case a rotational speed reduction degree is greater than a reference value and decreases the upper limit value of the torque instruction value in the powering range in case the rotational speed reduction degree is smaller than the reference value.. . ... Kubota Corporation

09/21/17 / #20170268202

Work vehicle and running control apparatus causing automatic running of work vehicle

A work vehicle includes an automatic running control unit 51 that executes automatic running based on an own vehicle position and a target running path; a manual running control unit 52 that executes manual running based on an operation signal from a manual running operation unit 9 that is manually operated; a first control unit 61 that executes a change from manual running to automatic running, a manual stoppage of the vehicle being a condition for the change; a second control unit 62 that executes a forced stoppage of the vehicle when changing from automatic running to manual running; and a third control unit 63 that executes a forced stoppage of the vehicle by temporarily suspending automatic running in response to a suspend instruction from the manual running operation unit 9, and resumes automatic running in response to a resume instruction from the manual running operation unit 9.. . ... Kubota Corporation

09/21/17 / #20170267107

Utility vehicle

A utility vehicle includes an electric motor for driving a propelling device, a battery for supplying electric power to the electric motor, a temperature sensor configured to detect a temperature of the battery, a discharge current setting unit for setting an upper limit discharge current value based on the detected temperature detected by the temperature sensor, and a control unit for regulating discharge current of the battery within the upper limit discharge current value determined by the discharge current setting unit and for controlling driving of the electric motor.. . ... Kubota Corporation

09/21/17 / #20170267104

Work vehicle

A work vehicle includes a propelling device, which consists of a pair of right and left front wheels and a pair of right and left rear wheels, an engine configured to drive one of the pair of front wheels and the pair of rear wheels, an electric motor configured to drive the other of the pair of front wheels and the pair of rear wheels, a battery configured to supply electric power to the electric motor, and a controller configured to control the electric motor. The controller performs regeneration control at constant current value to charge the battery with regenerative power of the electric motor at a constant current value regardless of rotation speed of the electric motor.. ... Kubota Corporation

09/14/17 / #20170263914

Electric work vehicle

An electric work vehicle includes a plurality of battery mounting portions, a plurality of battery packs that can be detachably mounted to the battery mounting portions, a main body contact provided for each one of the battery mounting portions and electrically connected with the battery back mounted to the battery mounting portion, a power feeding circuit to which the main body contact is parallel connected, a battery switch configured to block flow of electric power from the battery pack to the power feeding circuit, a switch operating portion for operating the battery switch, a charged amount estimating portion for estimating a charged power of the battery pack mounted to the battery mounting portion, an electric motor driven by power fed from at least one battery pack via the power feeding circuit, and a driving wheel receiving power transmitted from the electric motor.. . ... Kubota Corporation

09/07/17 / #20170254280

Multipurpose vehicle

A multipurpose vehicle includes an engine, a fuel supply unit that supplies fuel to the engine, a gear transmission device that changes speed of power from the engine through a shifting operation, a coupling state detection sensor that detects a coupling state of the gear transmission device, a determination unit that determines whether the coupling state is an incomplete coupling state based on a detection signal from the coupling state detection sensor, and a fuel supply control unit that executes a fuel cut to reduce a fuel supply amount of the fuel from the fuel supply unit to the engine to a value less than a reference value, if the determination unit determines that the coupling state is the incomplete coupling state.. . ... Kubota Corporation

09/07/17 / #20170253120

Multipurpose vehicle

A multipurpose vehicle includes an engine that has a plurality of cylinders, a traveling vehicle body that has a traveling device that is driven based on a driving force of the engine, a man-operable accelerator operating tool, a controller that controls a fuel injection quantity with respect to the plurality of cylinders of the engine based on an amount of operation of the accelerator operating tool, and a vehicle speed sensor that detects a traveling speed of the traveling vehicle body. If the traveling speed of the traveling vehicle body reaches or exceeds a set maximum traveling speed, the controller suppresses the fuel injection quantity supplied with respect only to one/some of the plurality of cylinders, irrespective of the amount of operation of the accelerator operating tool.. ... Kubota Corporation

08/31/17 / #20170246942

Work vehicle with a power-travel drive unit

A work vehicle comprises: a vehicle frame; a driving portion in which a driver seat is provided; an electric motor for driving the vehicle to travel; and a battery for supplying electric power to the electric motor, the battery including a plurality of battery modules accommodated in a single battery pack. Each of the battery modules is formed as a rectangular box whose longitudinal length is different from its lateral length in a planar view, and the battery modules are arranged adjacent to each other with a short side of one of the battery modules opposing a long side of the other of the battery modules. ... Kubota Corporation

08/24/17 / #20170239625

Method of producing flat sheet membrane element and flat sheet membrane element

A sheet filter membrane is arranged on a surface of a filter plate of a thermoplastic resin, and a plurality of projections provided in a hot plate is pressed against the filter plate above a periphery of the filter membrane with different timing for each of the projections to abut on the filter membrane. A plurality of recessed bonding portions with different depths are thus formed in the filter plate, and the filter membrane is bonded to the filter plate by heat welding in each of the recessed bonding portions. ... Kubota Corporation

08/17/17 / #20170234336

Hydraulic block

A hydraulic block includes multiple pairs of actuator ports connectable to a hydraulic actuator and a discharge oil passage for discharging work oil returned from the hydraulic actuator to the outside. The charge oil passage includes a first oil passage corresponding to a predetermined actuator port of all the actuator ports and a second oil passage corresponding to non-predetermined actuator ports other than the predetermined actuator ports. ... Kubota Corporation

08/10/17 / #20170225709

Work vehicle having engine and hydraulic stepless speed changing device

A work vehicle includes a driver's seat supported to a frame unit, a first hydraulic stepless speed changing device transmitting power to a first drive wheel, a second hydraulic stepless speed changing device transmitting power to a second drive wheel, and an oil tank. A bridge beam extending in a vehicle body transverse direction is provided between a cable harness extending in the vehicle body transverse direction and a hydraulic passage connecting the second hydraulic stepless speed changing device to the oil tank.. ... Kubota Corporation

08/10/17 / #20170225209

Outer layer material for composite roll for rolling and composite roll for rolling

The present invention provides an outer layer material for a composite roll for rolling, in which the strength of secondary eutectic carbides can be increased by reducing a b amount in the secondary eutectic carbides and surface roughening resistance can be improved, and a composite roll for rolling in which this outer layer material is used in an outer layer. The outer layer material for a composite roll for rolling of the present invention is an outer layer material for a composite roll for rolling containing c in an amount of 1.8 mass % or more and 2.5 mass % or less, si in an amount of more than 0 mass % and 1.0 mass % or less, mn in an amount of more than 0 mass % and 1.0 mass % or less, ni in an amount of more than 0 mass % and 0.5 mass % or less, cr in an amount of more than 3.0 mass % and 8.0 mass % or less, mo in an amount of more than 2.0 mass % and 10.0 mass % or less, w in an amount of more than 0 mass % and 10.0 mass % or less, v in an amount of more than 0 mass % and 10.0 mass % or less, and b in an amount of more than 0 mass % and less than 0.01 mass %, and a remaining portion including fe and inevitable impurities.. ... Kubota Corporation

08/03/17 / #20170217488

Vehicle having independently driven and controlled right and left wheels

A self-propelled vehicle includes a maneuvering unit, a drive unit including first and second drive sections, which are driven and controlled by drive wheel control commands, a drive wheel unit including left and right drive wheels driven by the first and second drive sections, respectively, at least one caster wheel which is controlled by a caster wheel control command, a bank detector for detecting a degree of bank of the vehicle and a control unit including a drive wheel control section for generating the drive wheel control commands. The control unit further includes a caster wheel control section which generates the caster wheel control command for controlling the steering angle of the caster wheel during a bank traversing travel, based on the bank degree so as to resolve a difference between a target travel and the actual travel which occurs during the bank traversing travel.. ... Kubota Corporation

07/27/17 / #20170211664

Work vehicle

A work vehicle includes a belt transmission mechanism that transmits a driving force of an engine to a speed changing device, a belt tension clutch that switches over the belt transmission mechanism between a transmitting state for transmitting the driving force to the speed changing device and a non-transmitting state that blocks transmission of the driving force to the speed changing device, a brake operating tool for effecting a braking operation of the traveling device and a coupling mechanism that activates the belt tension clutch for switching over the belt transmission mechanism into the non-transmitting state, in operative association with a braking operation on the brake operating tool.. . ... Kubota Corporation

07/27/17 / #20170210417

Work vehicle

A work vehicle includes a pair of left and right steerable wheels, a pair of left and right drivable wheels, and a boss portion that supports the steerable wheel pivotally about a steering axis via a king pin. The boss portion is closer to a width center of the steerable wheel than a vehicle body inner lateral side end of the steerable wheel.. ... Kubota Corporation

07/20/17 / #20170208651

Fluid heating device of engine

A fluid heating device of an engine is provided that is capable of reducing power consumption of a heat source required for heating a fluid. The fluid heating device of the engine includes a heat radiation pipe through which a fluid passes and an induction heating coil. ... Kubota Corporation

07/20/17 / #20170204822

Device for supplying fuel to engine

A merge and discharge unit has: a reservoir unit in which fuel can be collected; a first merge unit for merging into the reservoir unit the fuel from an upstream site upstream of the merge and discharge unit on a fuel supply route; a second merge unit for merging into the reservoir unit the fuel from a first fuel return route; a first discharge unit for discharging a portion of the fuel of the reservoir unit into a downstream site downstream of the merge and discharge unit on the fuel supply route; and a second discharge unit for discharging a remaining portion of the fuel of the reservoir unit into a second fuel return route.. . ... Kubota Corporation

07/20/17 / #20170203661

Work vehicle and display device for the work vehicle

A plug-in hybrid work vehicle includes a first battery charged from an on-board electric generator, a second battery charged from an external electric power source, a charging switch, a dc-to-dc converter, a voltage determination unit, and a charging control unit. During charging from the external electric power source, the charging control unit charges the second battery from the external electric power source when the voltage determination unit determines that the voltage of the first battery exceeds a reference voltage value necessary for starting an engine, and charges the first battery from the external electric power source via the dc-to-dc converter and the like, in preference to charging of the second battery, when the voltage determination unit determines that the voltage of the first battery is equal to or lower than the reference voltage value.. ... Kubota Corporation

07/13/17 / #20170200332

Ground work vehicle, ground work vehicle management system, and ground work information display method

A work device that performs work using a work unit while traveling, or a management system in which the work device is incorporated includes: a travel information generation unit that, over time, generates travel information indicating a travel state; a work information generation unit that, over time, generates work information indicating a work state for the work unit; a travel evaluation unit that, based on the travel information and the work information, divides the traveling of the work device into non-work traveling and actual work traveling; and a data visualization unit that generates visual data according to which the result of the division performed by the travel evaluation unit is made visible.. . ... Kubota Corporation

07/06/17 / #20170190247

Work vehicle having engine mounted thereto

A work vehicle having an engine mounted thereto includes a vehicle body frame extending in the longitudinal direction of vehicle, a seat supporting deck supported to the vehicle body frame via a suspension unit, a driver's seat supported to the seat supporting deck upwardly of this seat supporting deck, a fuel tank supported to the seat supporting deck downwardly of the driver's seat and supplying fuel to the engine; and a canister supported to the seat supporting deck and connected to the fuel tank.. . ... Kubota Corporation

07/06/17 / #20170188514

Harvesting machine

A harvesting machine includes: a crop tank; a measuring device that measures an amount of crop that has been stored in the crop tank; an unloader apparatus that discharges crop that has been stored in the crop tank; a device control part that executes precise measurement oriented device setting processing; a measurement control part including a precise measurement execution part that performs, precise measurement which involves the precise measurement oriented device setting processing, and a simplified measurement execution part that executes, simplified measurement; an operational instruction processing part that outputs a precise measurement instruction and a simplified measurement instruction in response to an operation performed by a manual operation device; and a measurement result recording part that rewrites a simplified measurement result recorded based on a preceding simplified measurement instruction, with a precise measurement result that is based on a succeeding precise measurement instruction.. . ... Kubota Corporation

06/29/17 / #20170184134

Hydraulic system for work machine

A hydraulic system for a work machine includes a first control valve including a first direction switch to switch a direction in which the operation fluid is to flow through a first hydraulic actuator and a pressure compensator to maintain a differential pressure to a constant pressure, the differential pressure being a difference between a pressure of the operation fluid to be inputted to the pressure compensator and a pressure of the operation fluid to be outputted from the pressure compensator. And, the hydraulic system includes a second control valve including a second direction switch to switch a direction in which the operation fluid is to flow through a second hydraulic actuator and a flow rate prioritizer to prioritize a flow rate of the operation fluid to be outputted to the second hydraulic actuator.. ... Kubota Corporation

06/29/17 / #20170184051

Cylinder head cooling structure

In a cylinder head cooling structure of engine e including a camshaft 15 rotated by a crankshaft 2, a push rod, and an actuatable rocker arm, an injection hole 46 for injecting oil pressurized by an oil pump 44 is formed in a shaft portion 43 between an exhaust cam 36 on the camshaft 15 and a journal 15j at its rear end, and the oil injected the injection hole 46 is allowed to enter a rear cylinder head cover 7 through a pushrod chamber in which the push rod is disposed.. . ... Kubota Corporation

06/29/17 / #20170183999

Exhaust apparatus for diesel engine

An exhaust apparatus for a diesel engine rapidly burns an unburned deposit in an upstream exhaust catalyst with heat of a heater. The exhaust apparatus includes a downstream exhaust cleaner, an upstream exhaust catalyst provided in an exhaust passage, upstream of the downstream exhaust cleaner, a heater disposed at an exhaust inlet of the upstream exhaust catalyst, and an engine starter apparatus. ... Kubota Corporation

06/29/17 / #20170183837

Joint mechanism and connection method for steel pipe

Contemplated are simplification and cost reduction in arrangement of connecting a pair of steel pipes to each other. A joint mechanism for a pair of steel pipe piles 1a, 1b includes an inner joint 10a provided in the steel pipe pile 1a, an inner joint 10b, an outer joint 20 disposed circumferentially between and across the inner joint 10a of the steel pipe pile 1a and the inner joint 10b of the steel pipe pile 1b, and a key member 30 configured to prevent relative movement between the pair of steel pipe piles 1a, 1b in a longitudinal direction of these steel pipes 1. ... Kubota Corporation

06/29/17 / #20170181376

Mower deck with tilted idle pulleys

[summary] a mower unit receiving power transmitted from a drive source includes a blade pulley mounted on a blade rotational shaft, an idle pulley unit, and a single belt routed around an output pulley of the drive source, the idle pulley unit and the blade pulley. The pulley height of the idle pulley unit is set higher than the pulley height of the blade pulley, and a belt portion of the belt running between the output pulley and the idle pulley unit extends to pass over and above the other belt portion.. ... Kubota Corporation

06/29/17 / #20170181374

Mid-mount mower

A mid-mount mower has a mower unit mounted under a vehicle body between front wheels and rear wheels. The mower includes a lift link mechanism having a front link and a rear link, an intermediate structure interconnecting one end of the front link and one end of the rear link via a pivot axis, a blade housing having an engaged portion engageable with an engaging potion of the intermediate structure and a guide face configured to guide the engaging portion ad the engaged portion to an engaging position so as to establish connection between the blade housing placed on a ground surface and the intermediate structure in association with a movement of the vehicle body in a front/rear direction.. ... Kubota Corporation

06/22/17 / #20170175779

Hydraulic system of work machine

A hydraulic system of a work machine includes a first hydraulic actuator, a first control valve, a first oil passage, a second hydraulic actuator, a second control valve, a second oil passage, and a bypass oil passage. The first control valve is connected to the first hydraulic actuator to control the first hydraulic actuator. ... Kubota Corporation

06/22/17 / #20170175687

Air-cooled v-type engine

An air-cooled v-type engine includes a crankcase, a cooling fan disposed at the front end of a crankshaft, a fan casing housing the cooling fan, a pair of cylinders projecting to form a v shape from the crankcase as seen in a direction along an axial center of the crankshaft, and cylinder heads. A distributor for distributing supply fuel from a fuel supply apparatus to intake air passages of respective cylinders is disposed to straddle a contained angle place being a place between the cylinders forming the v shape. ... Kubota Corporation

06/22/17 / #20170174069

Work vehicle

Provided is a work vehicle in which a seat support frame that supports a driver seat is equipped on a vehicle body frame, the vehicle body frame includes: a front portion vehicle frame at which a floor surface of a driving portion is provided; and a rear portion vehicle frame disposed at a position higher than the floor surface of the driving portion and rearward of the front portion vehicle frame. An engine is equipped below the rear portion vehicle frame, a battery that supplies power to an electric motor is equipped above the front portion vehicle frame and below the seat support frame, and a frame portion of the seat support frame that exists above the battery at a position opposing the battery is configured to be detachable from another frame portion that is fixed to the vehicle body frame.. ... Kubota Corporation

06/15/17 / #20170167112

Work vehicle

A work vehicle includes a riding-type traveling vehicle body and a hydraulically operable front loader coupled to a front of the traveling vehicle body. The traveling vehicle body includes left and right rear wheels disposed to the left and right of a driver seat, left and right rear fenders covering the left and right rear wheels, a valve unit for the front loader and an operating lever for the front loader. ... Kubota Corporation

06/15/17 / #20170166154

Work vehicle

A work vehicle includes a vehicle body frame, a protection frame extending upwards from the vehicle body frame, the protection frame including left and right strut members and an arch member extending between and detachable from the left and right strut members, a support frame provided in the vehicle body frame and configured to support the protection frame to the vehicle body frame, the support frame including a pair of left and right pipe-like supporting portions, each supporting portion being provided under a laterally outward tilted orientation with an upper portion of the supporting member being positioned on more laterally outer side of a vehicle body and being configured to removably support the strut member, and a connection tool configured to non-removably connect the left and right strut members to the left and right supporting portions.. . ... Kubota Corporation

06/15/17 / #20170166044

Work vehicle

In a work vehicle, a fuel supply path including a first fuel supply path connecting a first fuel tank to a merging portion, a second fuel supply path connecting a second fuel tank to the merging portion, and a common supply path connecting the merging portion to an engine is formed. A fuel pump supplying fuel to the engine is provided in the common supply path. ... Kubota Corporation

06/08/17 / #20170159679

Hydraulic system of work machine and work machine

A hydraulic system of a work machine includes a first hydraulic device to operate in a first operation mode while pressure of hydraulic oil supplied from a hydraulic pump via a first oil passage is equal to or higher than a first pressure threshold. The hydraulic oil in the first oil passage is to be discharged via a second oil passage. ... Kubota Corporation

06/08/17 / #20170159544

Work vehicle

A work vehicle includes an engine, a cooling fan for feeding cooling air to the engine, a fan cover for covering the cooling fan, and a shutter device provided at an ambient air inlet of the fan cover and openable and closable.. . ... Kubota Corporation

06/08/17 / #20170159265

Work machine and hydraulic system for work machine

A hydraulic system for a work machine includes a first control valve to control a first hydraulic actuator, a second control valve to control a second hydraulic actuator, a first fluid tube connecting the first hydraulic actuator to the first control valve, and a second fluid tube connecting the second hydraulic actuator to the second control valve. A level control valve apparatus is connected to the first fluid tube and the second fluid tube. ... Kubota Corporation

06/08/17 / #20170159264

Work vehicle and backhoe

A work vehicle including an attachment mechanism for attaching a backhoe to a vehicle body. The attachment mechanism includes a pin provided in the vehicle body, an engaging body provided in the backhoe and engageable with the pin, and a locking body for fixing the engaging body to the pin under mutually engaged state. ... Kubota Corporation

06/08/17 / #20170158242

Work vehicle

A work vehicle includes a prime mover unit disposed in a front part of the vehicle body, a driving part located in a rear part of the vehicle body, a battery disposed between the prime mover unit and the driving part, a base frame disposed in a lower part of the vehicle body and a center pillar that extends upward from the base frame. The prime mover unit includes a radiator disposed immediately forward of the center pillar. ... Kubota Corporation

06/08/17 / #20170158044

Utility vehicle

A utility vehicle includes: a travel unit having a left-right pair of front travel apparatuses and a left-right pair of rear travel apparatuses; an engine capable of driving first travel apparatuses being one of the pair of front travel apparatuses and the pair of rear travel apparatuses; a motor capable of driving second travel apparatuses being the other of the pair of front travel apparatuses and the pair of rear travel apparatuses; and a control apparatus capable of switching between an engine two-wheel drive mode in which only the engine is driven, a motor two-wheel drive mode in which only the motor is driven, and a hybrid four-wheel drive mode in which the engine and the motor are both driven.. . ... Kubota Corporation








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