Real Time Touch



new TOP 200 Companies filing patents this week

new Companies with the Most Patent Filings (2010+)




Real Time Touch

Komatsu Ltd patents


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

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


Work machine and method for controlling work machine

A hydraulic excavator has a boom, an arm, a bucket, and a boom cylinder which drives the boom. A load value within the bucket is computed based on a load of the boom cylinder, and the load value obtained by computing is corrected based on an acceleration of extension/retraction of the boom cylinder.. ... Komatsu Ltd

Control system for work vehicle, control method, and work vehicle

A control system for a work vehicle including a work implement comprises a first operating lever, a first operating member, and a controller. The first operating lever is for operating the work implement. ... Komatsu Ltd

Work vehicle, and position adjustment method of movable portion of work vehicle

A work vehicle includes a blower unit rotatably supported to a vehicle body between a closed position and an open position, and a position adjustment portion configured to adjust a vertical position of the blower unit when the blower unit is at the closed position. The position adjustment portion includes a first plate that is provided on the vehicle body and includes a first through portion vertically penetrating, a second plate that is provided on the blower unit, vertically penetrates, and includes a second through portion communicating with the first through portion from below when the blower unit is at the closed position, and an adjustment bolt that includes a shaft portion inserted into the first through portion and the second through portion.. ... Komatsu Ltd

Work vehicle and method of controlling work vehicle

A main controller controlling an operation of a work vehicle includes a determination unit and an abnormal condition determination unit. The determination unit determines whether or not an attachment has a sensor based on information on an attachment. ... Komatsu Ltd

Component information management system

A parts information management system includes: an identification device storing parts information for identifying an attached target part; a communication device acquiring parts information included in an electric wave outputted by the identification device and measuring a received strength of the electric wave; and a management apparatus managing the parts information acquired by the communication device. The management apparatus includes an installation position judgment unit that judges whether or not the target part identified by the parts information associated with the received strength is provided at a predetermined installation position based on the received strength, and a notification unit that outputs malfunction information when it is judged that the target part is not provided at the installation position.. ... Komatsu Ltd

Work vehicle

A work vehicle includes a vehicle body that includes a heat exchange room in which an opening portion facing a rear side is formed, and a rear passage extending in a width direction along a lower edge portion of the opening portion behind the opening portion, a cooling unit that is provided in the heat exchange room and includes a rear surface facing the rear side, and a blower unit that includes a fan rotationally driven and a movable shroud covering the fan from an outer peripheral side, and that is movable with respect to the vehicle body so that a movement region of the blower unit overlaps the rear passage between a closed position at which the blower unit faces the rear surface of the cooling unit from the rear side and an open position at which the blower unit exposes the rear surface of the cooling unit.. . ... Komatsu Ltd

Work vehicle

A work vehicle includes a vehicle body which has a passage including a rear passage, and a movable fence rotatably supported to the vehicle body around a rotation axis which extends in a vertical direction between a normal position which extends in a width direction of the vehicle body along a rear edge of the rear passage and a retreat position which extends backward from the vehicle body.. . ... Komatsu Ltd

Work equipment control device and work machine

A control device includes a bucket control unit and a speed restricting unit. The bucket control unit calculates a control speed controlling a bucket so as to maintain an angle of the work equipment at a constant angle. ... Komatsu Ltd

Work vehicle

A parking brake of a work vehicle has a piston near the wheel relative to an end plate in an axial direction parallel to a rotation axis of the drive shaft to move in the axial direction, a hub between the end plate and the piston in the axial direction to be connected to the drive shaft, a cylinder disposed outwardly from the hub in a radial direction relative to the rotation axis, a disk supported by the hub in an inner space defined by the end plate, the piston, the hub, and the cylinder, a separator supported by the cylinder, next to the disk in the inner space, and moved by the piston in the axial direction, a first passage connecting the inner space and an outer space, and a second passage provided outwardly from the first passage in the radial direction to connect the inner and outer spaces.. . ... Komatsu Ltd

Bent-axis hydraulic pump motor

A bent-axis hydraulic pump motor includes: a cylinder block, a retainer plate; and a constant velocity joint, which includes an inner joint element; an outer joint element; and a plurality of balls interposed between block-side ball grooves and shaft-side ball grooves to transmit torque between the cylinder block and the retainer plate, so that all block-side groove planes, which include respective extending axial lines of the block-side ball grooves and the inclined rotation center, are inclined with respect to an axial center of a center shaft and all drive shaft-side groove planes, which include respective extending axial lines of the shaft-side ball grooves and the inclined rotation center, are inclined with respect to an axial center of a drive shaft such that loads applied to a cage in an axial direction from the balls are balanced.. . ... Komatsu Ltd

Work vehicle and data calibration method

A work vehicle includes an operation apparatus for operating a work implement, a valve adjusting a flow rate of a hydraulic oil operating the work implement, an electromagnetic proportional control valve provided in a pilot oil path connecting a pilot oil pressure source and a pilot chamber of the valve to each other and generating a command pilot pressure with a source pressure input from the pilot oil pressure source being used as a primary pressure, and a main controller outputting a command current operating the electromagnetic proportional control valve in accordance with an operation of the operation apparatus. The main controller includes a data table storage unit storing data for predicting an operation speed of the work implement and a calibration unit calibrating data on the condition that an operation onto the operation apparatus is performed.. ... Komatsu Ltd

Antenna attachment structure and dump truck

An antenna attachment structure attaches a plurality of antennas to a dump truck including a chassis and a dump body rotatably provided on the chassis, the dump body covering the chassis across an entire length and entire width thereof in a plan view. The antenna attachment structure includes: an antenna attachment portion to which the plurality of antennas are attached and rotatably attached to each of lateral surfaces of the dump body; and a parallel link mechanism including the antenna attachment portion and a rotation center of the dump body and configured to keep a constant posture of the antenna attachment portion when the dump body is rotated.. ... Komatsu Ltd

Work machine

A work machine includes a relief valve that is installed in a hydraulic line that forms a closed circuit between a hydraulic pump and a hydraulic motor, and sets a relief pressure of the hydraulic line; a braking device that brakes a traveling device attached to the hydraulic motor; and an operation mechanism that operates the braking device. When a traveling speed of the traveling device is equal to or more than a predetermined threshold, the relief pressure is changed from a first pressure that is a pressure before a braking operation is performed by the operation mechanism to a second pressure that is lower than the first pressure.. ... Komatsu Ltd

Construction method, work machine control system, and work machine

A work machine control system includes a shape detection unit and a construction information generation unit. The shape detection unit detects an object to be constructed and outputs shape information representing a three-dimensional shape of the object. ... Komatsu Ltd

08/16/18 / #20180230676

Bulldozer

A bulldozer includes a steering clutch, a steering brake, a hydraulic pump that discharges a lubricating oil, a first lubricating oil supply path, a second lubricating oil supply path, a third lubricating oil supply path, and a flow amount switching valve disposed on the second lubricating oil supply path. The first lubricating oil supply path supplies a portion of the lubricating oil discharged by the hydraulic pump to the steering clutch the second lubricating oil supply path supplies a portion of the lubricating oil discharged by the hydraulic pump to the steering brake. ... Komatsu Ltd

08/16/18 / #20180230675

Work vehicle

A wheel loader comprises a console box and a support component. The console box is disposed on the side of an operator's seat and is able to rotate in the forward and backward direction. ... Komatsu Ltd

08/16/18 / #20180230672

Control device for construction machine and method of controlling construction machine

A control device for a construction machine includes an operational amount data acquisition unit configured to acquire operational amount data indicating an operational amount of the working unit, an operation determination unit configured to determine a non-operation state of a bucket on the basis of the operational amount data, a bucket control determination unit configured to determine whether bucket control conditions are satisfied, on the basis of determination of the non-operation state, and a working unit control unit configured to output a control signal for controlling the bucket to maintain a state of the working unit, when the bucket control conditions are determined to be satisfied.. . ... Komatsu Ltd

08/16/18 / #20180230670

Control system, work machine, and control method

A control system includes: a first hydraulic pump and a second hydraulic pump; a passage connecting the first hydraulic pump and the second hydraulic pump with each other; an opening/closing device provided in the passage and configured to open and close the passage; a control device configured to control the opening/closing device to switch between a split-flow state in which the passage is closed and a connected state in which the passage is open; a first actuator to which hydraulic fluid discharged from the first hydraulic pump is supplied in the split-flow state; and a second actuator to which hydraulic fluid discharged from the second hydraulic pump is supplied in the split-flow state. In the connected state, the control device controls the opening/closing device so that the connected state is maintained even when either one of the first actuator and the second actuator is brought into a driven state.. ... Komatsu Ltd

08/16/18 / #20180229639

Dump truck dump body, and dump truck

A dump truck configured to move in both front and back directions and dump loads in a first one of the directions includes: a chassis including an engine within a wheelbase; and a dump body covering an upper portion of the chassis across an entire length in travel direction and an entire width in vehicle width direction, the dump body supported so as to be able to be raised and lowered via a hinge by a side of the chassis near which loads are dumped. The dump body includes: a first inclined a side of the dump body from portion rising upward from a bottom portion of the dump body toward the side thereof from which loads are dumped; and a second. ... Komatsu Ltd

08/16/18 / #20180229602

Tank and method of manufacturing tank

A tank mounted on a working vehicle is provided with an exterior member including a first plate unit, a second plate unit, a third plate unit, a fourth plate unit, a fifth plate unit, and a sixth plate unit, a first baffle plate joined to a first inner surface of the first plate unit, a second inner surface of the second plate unit, and a third inner surface of the third plate unit, and a second baffle plate joined to a fourth inner surface of the fourth plate unit, a fifth inner surface of the fifth plate unit, and a sixth inner surface of the sixth plate unit.. . ... Komatsu Ltd

08/09/18 / #20180225895

Working vehicle, remote diagnosis system, and remote diagnosis method

A working vehicle includes an acquisition device that acquires operating state data, a client screen data generation unit that generates client screen data that a client display device of a client apparatus can display based on the operating state data, and a wireless communication device that transmits the client screen data to the client apparatus.. . ... Komatsu Ltd

08/09/18 / #20180223744

Exhaust purifying device and working vehicle

An exhaust purifying device mounted in a working vehicle includes: an exhaust passage through which an exhaust gas discharged from an engine flows; a throttle valve configured to change a passage area of the exhaust passage; an exhaust aftertreatment device disposed downstream of the throttle valve; and a valve controller configured to control an open degree of the throttle valve. The valve controller is configured to control the open degree of the throttle valve to be larger in a low load region below a predetermined load range and in a high load region exceeding the predetermined load range than in a medium load region that is the predetermined load range.. ... Komatsu Ltd

08/09/18 / #20180222390

Surroundings monitoring system for work vehicle, work vehicle, and surroundings monitoring method for work vehicle

A surroundings monitoring system for a work vehicle includes a bending angle data acquirer acquiring bending angle data between a vehicle body front and rear portions, and a shot image data acquirer acquiring shot images respectively shot by multiple cameras, and a bird's eye image compositor performing image processing of a plurality of the shot image data to generate a bird's eye image, and a storage storing representative images of the work vehicle respectively belong to multiple bending angle ranges between the vehicle body front and rear portions, and a determiner determining, from the multiple bending angle ranges, a bending angle range to which the bending angle belongs, and a selector selecting, from a plurality of the representative images, a representative image that belongs to the determined bending angle range, and a display controller causing a display to simultaneously display the generated bird's eye image and the selected representative image.. . ... Komatsu Ltd

08/02/18 / #20180218304

Construction management system and construction management method

A construction management system includes a construction amount data calculation unit configured to calculate, based on a current landform and a design landform of a construction site, construction amount data of the construction site, an original unit data acquisition unit configured to acquire original unit data indicating a specific condition of a work device that constructs the construction site, a construction plan data calculation unit configured to calculate, based on the construction amount data and the original unit data, a construction plan corresponding to a target construction period, and a construction cost required when construction is executed using the construction plan, and a construction plan data output unit configured to cause an output device to output the construction cost corresponding to the target construction period.. . ... Komatsu Ltd

08/02/18 / #20180218301

Construction management system and construction management method

A construction management system includes a construction plan data calculation unit configured to calculate, based on construction plan data indicating a construction plan of a construction site, the construction plan data having been calculated based on a current landform and a design landform of the construction site and original unit data indicating a specific condition of a work device, necessary work device data indicating a work device necessary for executing construction of the construction site using the construction plan, and a construction plan data output unit configured to cause an output device to output the necessary work device data.. . ... Komatsu Ltd

08/02/18 / #20180216637

Control system, work machine, and control method

A control system for controlling a work machine including a working unit including elements and actuators that drives the elements includes: a first hydraulic pump and a second hydraulic pump each of which supplies operating oil to at least one of the actuators; and a control device that calculates a distribution flow rate of operating oil distributed to each of the actuators based on an operating state of the working unit and switches, based on the calculated distribution flow rate, between a first state in which the operating oil supplied from both the first hydraulic pump and the second hydraulic pump is supplied to the actuators and a second state in which the actuator to which the operating oil is supplied from the first hydraulic pump is different from the actuator to which the operating oil is supplied from the second hydraulic pump.. . ... Komatsu Ltd

08/02/18 / #20180216318

Construction machine and construction management system

A construction machine includes: a vehicle body; a plurality of imaging devices provided to the vehicle body; a data processing unit configured to perform image processing on each piece of two-dimensional image data acquired by the plurality of imaging devices to generate three-dimensional image data; and a data output unit configured to output the two-dimensional image data to a display device associated with the vehicle body.. . ... Komatsu Ltd

08/02/18 / #20180215427

Track link and link mounted part

A link mounted part is formed as a part separate from a link body. The link mounted part includes a plate portion having a rail surface, and two projection portions which are integrally formed with the plate portion and project upward from the rail surface. ... Komatsu Ltd

08/02/18 / #20180215232

Working vehicle

A working vehicle includes an engine, an air blowing device, an exhaust gas post-processing device, and a guide device. The air blowing device is disposed in front of the engine. ... Komatsu Ltd

07/19/18 / #20180202397

Intake apparatus and dump truck

An intake apparatus includes: an air cleaner unit purifying air sucked from a suction port and discharge the air from a discharge port; a junction pipe section having a plurality of inlet ports while having a single outlet port, each of the inlet ports being connected to the discharge port of the air cleaner unit; a tapered pipe section connected to the outlet port of the junction pipe section and having an inner diameter gradually decreased toward a downstream; a straight pipe section connected to a downstream side of the tapered pipe section and having a constant inner diameter; and an air meter provided in the straight pipe section.. . ... Komatsu Ltd

07/19/18 / #20180202131

Display system

Provided is a display system capable of facilitating appropriate ripping work. A right ripper side camera images a ripping tip. ... Komatsu Ltd

07/19/18 / #20180202129

Work machine control system, work machine, and work machine control method

A work machine control system includes: an acquisition unit configured to acquire a plurality of pieces of current topographical data of a work site where a work machine including a work unit performs work; a setting unit configured to set predetermined first current topographical data and second current topographical data from the plurality of pieces of current topographical data acquired by the acquisition unit; and an arithmetic unit configured to calculate a difference between the first current topographical data and the second current topographical data, and obtain revision data to revise the first current topographical data based on the difference and parameter information related to the current topography of the work site.. . ... Komatsu Ltd

07/19/18 / #20180202128

Work machine control system and work machine control method

A work machine control system includes: an acquisition unit configured to acquire a plurality of pieces of current topographical data indicating a current topography of a work site where a work machine performs work; and a combining unit configured to generate combined current topographical data of the work site in accordance with a predetermined rule based on the plurality of pieces of current topographical data acquired in the acquisition unit.. . ... Komatsu Ltd

07/05/18 / #20180188741

Mining machine management system and management method

A mining machine management system includes a detection unit mounted on a mining machine that travels in a mine in which a plurality of landmarks is installed, and which detects a position of the landmark with respect to the mining machine in a non-contact manner, and a traveling control unit which corrects a current position of the mining machine based on a position of the landmark, the position having been obtained in advance, and the position of the landmark obtained by the detection unit and causes the mining machine to travel by dead reckoning navigation, and which does not use at least the position of the landmark detected by the detection unit in causing the mining machine to travel by the dead reckoning navigation, when a vehicle traveling in the mine exists around the position of the landmark detected by the detection unit.. . ... Komatsu Ltd

06/28/18 / #20180179726

Work implement, arm, and work vehicle

An arm includes an arm main body, a protective member, a fixing component and a restrictor. The arm main body has a distal end part with first and second end components disposed a specific space apart along a width direction, a bucket attached to the arm main body, and a proximal end part configured to allow attachment on a vehicle main body side. ... Komatsu Ltd

06/28/18 / #20180178631

Heater apparatus and work vehicle

A heater apparatus includes a housing which is arranged in a step positioned at an outer side of a floor plate of a vehicle body of a work vehicle in a vehicle width direction and has an air intake and a warm air blowoff port; an electric heater arranged in an inner space of the housing; a fan which supplies air to the electric heater; and a supporting member which supports the electric heater and the fan. The electric heater is arranged so that a rear end of the electric heater is arranged at a position lower than a front end of the electric heater.. ... Komatsu Ltd

06/28/18 / #20180178616

Work vehicle and operator's compartment unit

An operator's compartment has an internal space. A case has an internal space in communication with the internal space of the operator's compartment. ... Komatsu Ltd

06/21/18 / #20180171598

Calibration device of work machine, work machine, and calibration method of work machine

When correcting an error caused by deviation of an attitude detection device with respect to a work machine including a swing body which swings, a working implement being attached to the swing body, the attitude detection device outputting an attitude of the work machine, the error is corrected by using a first position which is a position of a part of the work machine when the work machine is in a first attitude and a second position which is a position of the part when the work machine is in a second attitude.. . ... Komatsu Ltd

06/21/18 / #20180171594

Control system for wheel loader, control method thereof, and method of controlling wheel loader

A control system for a work vehicle includes a display and a control unit which has the display show a perspective image in which at least a part of a work implement of a wheel loader or a vessel of a loaded vehicle is seen through.. . ... Komatsu Ltd

06/14/18 / #20180163888

Spool valve, operation device, and work vehicle

A spool valve includes: a valve body that has a spool hole; and a spool disposed in the spool hole and movable in an axial direction, wherein the spool has a first large-diameter portion, and a small-diameter portion provided on one side in the axial direction of the first large-diameter portion, the first large-diameter portion has a first outer surface slidable with an inner surface of the spool hole, an end surface connected to an end portion at the one side in the axial direction of the first outer surface and to an end portion at the other side in the axial direction of an outer surface of the small-diameter portion, and a cutout portion provided on the end surface, and a bottom surface of the cutout portion is inclined toward the one side in the axial direction to approach a central axis of the spool.. . ... Komatsu Ltd

06/14/18 / #20180163372

Work vehicle

A work vehicle includes a hydraulic fluid tank having a breather valve, and a breather hose attached to the breather valve. The breather hose has a first flowpath joined to the breather valve and a second flowpath and a third flowpath branching off from the first flowpath. ... Komatsu Ltd

06/14/18 / #20180162216

Work vehicle

A hydraulic excavator includes an engine hood covering an engine from above and a vent member disposed inside the engine hood. The engine hood includes a third side plate. ... Komatsu Ltd

06/07/18 / #20180156324

Mechanical device, working vehicle, and deterioration state estimation system and deterioration state estimation method of machine component

A mechanical device includes a housing, a transparent spacer member, a magnet, and an image capturing device. The housing has an internal space in which a machine component immersed in oil is housed. ... Komatsu Ltd

06/07/18 / #20180154935

Travel vehicle and method for controlling travel vehicle

A travel vehicle includes: a vehicle having a travel device and a vehicle body supported by the travel device; a steering device provided to the travel device; a steering angle detection device that detects detected steering angle data of the steering device; an attitude detection device that detects attitude data of the vehicle body; a travel speed detection device that detects travel speed data of the travel device; a turn data calculation unit that calculates turn data of the vehicle body based on the attitude data and the travel speed data; and a steering angle data correction unit that calculates first correction data on the detected steering angle data based on the detected steering angle data and the turn data.. . ... Komatsu Ltd

05/31/18 / #20180149240

Power train and motor grader

A power train is provided having a reduced size and weight. A hydraulic motor includes a rotatable output shaft. ... Komatsu Ltd

05/31/18 / #20180148905

Work equipment control device and work machine

A work equipment control device includes a work equipment state specifying unit, a control reference specifying unit, a distance specifying unit, and a bucket control unit. The work equipment state specifying unit specifies a state of work equipment. ... Komatsu Ltd

05/24/18 / #20180142442

Wheel loader

A wheel loader includes a vehicular body, a work implement, a front wheel, and a control unit. The work implement is disposed in front of the vehicular body. ... Komatsu Ltd

05/17/18 / #20180137446

Construction management system and construction management method

A construction management system includes: a current topography data acquisition unit configured to acquire current topography data indicating a current topography of a construction site; a design topography data acquisition unit configured to acquire design topography data indicating a design topography of the construction site; a construction plan data calculation unit configured to calculate construction plan data including earth cutting plan data and earth banking plan data by collating the current topography data with the design topography data; and a construction plan data output unit configured to output the construction plan data to an output device. The construction plan data output unit causes an output device to output at least two of the design topography data, the cutting plan data, and the banking plan data in parallel.. ... Komatsu Ltd

05/17/18 / #20180135740

Lubricating apparatus

A lubricating apparatus includes a lubricating oil supplying member disposed to face a tip surface of an input shaft. An axial oil passage and a radial oil passage are formed inside the input shaft and allow an outer circumferential surface of the input shaft having outer spline teeth and the tip surface to communicate with each other. ... Komatsu Ltd

05/17/18 / #20180135277

Control system for work vehicle, control method thereof, and method of controlling work vehicle

A control system for a work vehicle includes a position determination unit which determines a position of loading on a loaded vehicle based on a state of loading on the loaded vehicle, a display, and a representation control unit which has the display show loading guidance corresponding to the position of loading determined by the position determination unit for a laterally viewed loaded vehicle.. . ... Komatsu Ltd

05/17/18 / #20180135273

Wheel loader

A wheel loader includes a work implement, an obtaining unit, and a control unit. The work implement includes a bucket. ... Komatsu Ltd

05/10/18 / #20180127036

Lug bar, track shoe, and method for producing lug bar

The lug bar includes a base, having a bar shape and made of a first metal, and an overlay, extending along the longitudinal direction of the base to cover a covered region as a part of the outer peripheral surface of the base. In an overlay edge portion corresponding to a boundary between the covered region and an exposed region other than the covered region of the surface of the base, the exposed region and the surface of the overlay are flush with each other to form a forged surface.. ... Komatsu Ltd

05/03/18 / #20180119384

Loader control system and loader control method

A loader control system includes: a boom position calculation unit configured to calculate a position of a boom rotatably supported by a vehicle body of a loader; a bucket attitude calculation unit configured to calculate an attitude of a bucket rotatably supported by the boom; a determination unit configured to determine whether the attitude satisfies a predetermined condition on the basis of the attitude and a reference attitude of the bucket in dumping movement; and a work machine control unit configured to cause the bucket to carry out the dumping movement, and output a control signal to cause the boom to carry out lifting movement when the attitude is determined to satisfy the predetermined condition.. . ... Komatsu Ltd

05/03/18 / #20180118261

Work vehicle

A bulldozer is provided with left and right steering brakes that brake the rotations of left and right drive wheels, and a control unit for hydraulically controlling the braking state of the respective left and right steering brakes. The control unit executes protection processing on the left steering brake or the right steering brake when a state of the degree of engagement of the left steering brake or the right steering brake being within a predetermined range and the vehicle speed being equal to or greater than a predetermined vehicle speed continues for a predetermined time.. ... Komatsu Ltd

04/19/18 / #20180106176

Exhaust gas aftertreatment unit and work vehicle

An exhaust gas aftertreatment unit includes a selective catalytic reduction device that treats engine exhaust gas, a connecting pipe that guides the engine exhaust gas to the reduction device, a reducing agent injection device disposed on the connecting pipe to inject a reducing agent into the exhaust gas, and a cooling water flowpath that guides cooling water to an internal flowpath of the injection device. The cooling water path includes a first flowpath joined with the internal flowpath, second and third flowpaths branching off from the first flowpath, and a branching point where the first flowpath branches into the second flowpath and the third flowpath is positioned higher than a connecting portion of the injection device and the first flowpath. ... Komatsu Ltd

04/19/18 / #20180105205

Work vehicle and method for controlling work vehicle

An articulated work vehicle with linked front and rear frames includes a joystick lever, a hydraulic actuator, a control valve, a force imparting component, a joystick displacement sensor, a steering angle sensor, and a controller. The joystick lever is operated to allow a target steering angle to be set. ... Komatsu Ltd

04/19/18 / #20180105203

Work vehicle and method for controlling work vehicle

An articulated work vehicle with linked front and rear frames includes a joystick lever, a force imparting component, and a controller. The joystick lever can be moved to an inside or an outside with respect to an operator's seat by being operated by an operator, to change a steering angle of the front frame with respect to the rear frame. ... Komatsu Ltd

04/19/18 / #20180105202

Work vehicle

A work vehicle is articulated with a front frame and a rear frame linked to the front frame. The work vehicle includes a hydraulic actuator, a control valve, an operation member and a force imparting component. ... Komatsu Ltd

04/12/18 / #20180100289

Work vehicle

An operator's compartment is located above a climbing device and has a door. A sensing unit recognizes an operator. ... Komatsu Ltd

04/05/18 / #20180094408

Display system of working machine and working machine

A display system of a working machine includes: a tilt sensor that detects a pitch angle and a roll angle of a working machine; a calculation unit that calculates a tilting position on polar coordinates that indicates a magnitude and a direction of tilt of the working machine based on the detected pitch angle and roll angle; a display unit that displays various kinds of information; a display processing unit that displays, on a predetermined region on a display screen of the display unit, a monitor-displayed level that performs a polar coordinate display of the tilting position and a marked line indicating a preset magnitude of tilt; and a setting processing unit that performs a setting to change display content of the monitor-displayed level.. . ... Komatsu Ltd

04/05/18 / #20180093614

Work vehicle

A climbing device body can assume by a rotation operation an erect, retracted position allowing a first end portion to be positioned above and a second end portion to be positioned below and a tilted, deployed position allowing the second end portion to be positioned sideways of the vehicular body outer than the first end portion. A handrail is engaged with the rotation operation to be capable of assuming a raised state allowing a gripping portion to assume a first position distant from the climbing device body in a deployed position and a folded state allowing the gripping portion to assume a second position close to the climbing device body in a retracted position.. ... Komatsu Ltd

03/29/18 / #20180087477

Egr apparatus and dump truck including the same

. . An egr apparatus configured to circulate exhaust gas discharged from an exhaust manifold of an engine to an intake manifold of the engine includes: an egr cooler disposed at a downstream side of the exhaust manifold and configured to cool the exhaust gas discharged from the exhaust manifold; a pair of egr valves disposed at an upstream side from the intake manifold and configured to adjust an amount of the exhaust gas to be supplied to the intake manifold; and an exhaust gas connector that establishes communication between the egr cooler and the exhaust manifold, in which the exhaust gas connector includes a cooling water path to which cooling water for cooling the exhaust gas flowing inside the exhaust gas connector is supplied.. . ... Komatsu Ltd

03/29/18 / #20180087244

Method of generating image data

A method of generating image data includes moving a work implement out of an angle of view of an image pick-up apparatus, picking up an image of a work region where the work implement performs work with the image pick-up apparatus with the work implement having been moved out of the angle of view of the image pick-up apparatus, and generating image data on the work region of which image has been picked up.. . ... Komatsu Ltd

03/29/18 / #20180085848

Method for producing metal member

The method for producing a metal member includes a step of preparing a first member made of a first metal and having a recessed portion formed therein, and a second member made of a second metal having a smaller deformation resistance than the first metal, and a step of joining the first member and the second member. The step of joining includes a step of increasing temperatures of the first member and the second member by relatively rotating the second member with respect to the first member while pressing the second member against the first member with at least a part of the second member being received in the recessed portion, and a step of stopping the relative rotation of the second member with respect to the first member and cooling the first member and the second member with the members being pressed against each other.. ... Komatsu Ltd

03/22/18 / #20180080199

Work vehicle

A stereo camera attached to a vehicular main body has a first image pick-up portion and a second image pick-up portion. An optical axis of the first image pick-up portion and an optical axis of the second image pick-up portion are inclined toward the work implement at angles different from each other with respect to a central axis of a work implement in a plan view as a distance from the vehicular main body is greater.. ... Komatsu Ltd

03/22/18 / #20180080198

Periphery monitoring apparatus of operation machine and periphery monitoring method of operation machine

A periphery monitoring apparatus of an operation machine, includes an acquisition unit acquiring a peripheral condition of the operation machine; an information output unit outputting information acquired by the acquisition unit; a lifted/lowered state detection unit detecting a lifted/lowered state of a lifting ladder provided in the operation machine; and an output control unit performing changing an output content in the information output unit in accordance with the lifted/lowered state of the lifting ladder, the output content being related to the information acquired by the acquisition unit, the lifted/lowered state being detected by the lifted/lowered state detection unit.. . ... Komatsu Ltd

03/22/18 / #20180080197

Image pick-up apparatus

A first stereo camera has a first image pick-up portion and a second image pick-up portion arranged on the right side of the first image pick-up portion in a lateral direction of a vehicular main body. A second stereo camera has a third image pick-up portion and a fourth image pick-up portion arranged on the right side of the third image pick-up portion in the lateral direction of the vehicular main body. ... Komatsu Ltd

03/22/18 / #20180079361

Display system for work vehicle

A display system includes a work vehicle, a first camera, a computation device, and a display device. The first camera is attached to one side portion of the work vehicle. ... Komatsu Ltd

03/15/18 / #20180074201

Control system of work machine, work machine, management system of work machine, and method of managing work machine

A control system is provided with a position detection device which detects a position of a work machine, a contactless sensor which detects an object around the work machine in a contactless manner, a position calculation unit which calculates a position of the work machine on the basis of at least map data indicating a position of the object and detection data of the contactless sensor, and a diagnosis unit which compares the position of the work machine derived from detection data of the position detection device and the position of the work machine calculated by the position calculation unit and diagnoses that there is an abnormality in either the detection data of the position detection device or a calculation result of the position calculation unit.. . ... Komatsu Ltd

03/15/18 / #20180073214

Bulldozer

A bulldozer has a protective structure. The protective structure includes a left pillar portion, a right pillar portion, and a beam portion. ... Komatsu Ltd

03/15/18 / #20180071859

Method for producing metal member

The method for producing a metal member includes a step of preparing a first member made of a first metal, a second member made of a second metal, and a third member made of a third metal, and a step of joining the first member and the second member via the third member. The step of joining includes a step of heating the first member, the second member, and the third member by stacking the first member, the third member, and the second member in this order and relatively rotating the first member about an axis of rotation, while pressing the first member against the third member, without changing a positional relationship, and a step of cooling the first member, the second member, and the third member heated, with the members being in the stacked state.. ... Komatsu Ltd

03/15/18 / #20180071858

Method for producing metal member

The method includes a step of preparing a first member made of a first metal and a second member made of a second metal having a smaller deformation resistance than the first metal, and a step of joining the first member and the second member. The step of joining includes a step of disposing the second member in a cavity of a mold, a step of heating the first member and the second member by relatively rotating the first member with respect to the second member, while pressing the first member against the second member, without changing a positional relationship, and a step of cooling the first member and the second member with the members being in contact with each other. ... Komatsu Ltd

03/08/18 / #20180067513

Operation device of work vehicle

An operation device includes a hold portion having a base end and a leading end, and an operation portion attached to the leading end of the hold portion. The operation portion includes a finger rest extending substantially along a direction in which the hold portion extends from the base end to the leading end, and first to third operation switches disposed with the finger rest interposed therebetween.. ... Komatsu Ltd

03/08/18 / #20180066412

Bulldozer

Provided is a bulldozer enabling the visibility of a rearward area of the bulldozer's body to be improved. The bulldozer includes a cab for an operator to be aboard, a fuel tank disposed rearward of the cab, and a work platform serving as a scaffold for an operator. ... Komatsu Ltd

03/01/18 / #20180062555

Booster control device and method of controlling voltage of booster control device

A booster control device includes an output voltage detection unit that detects output voltage of a booster which changes the output voltage according to a phase difference; a storage battery voltage detection unit that detects storage battery voltage; and a booster control unit that performs feedback control on the output voltage of the booster in order for a difference between an output voltage command value to the booster and detected output voltage to be equal to zero. Further, the booster control unit includes a gain control unit that corrects a control gain according to the storage battery voltage on the basis of storage battery voltage dependency of an input-output characteristic representing booster output with respect to a phase difference of the booster, in order for the booster output to have the control gain uniquely determined by the phase difference and outputs a control phase difference to the booster.. ... Komatsu Ltd

03/01/18 / #20180058044

Image pick-up apparatus

An image pick-up apparatus includes a first stereo camera attached to a revolving unit and a second stereo camera attached to the revolving unit. The first stereo camera picks up an image of a first image pick-up range. ... Komatsu Ltd

03/01/18 / #20180058041

Control system, work machine, and control method

A control system includes: first and second hydraulic pumps; an opening/closing device provided in a passage connecting the first and second hydraulic pumps and configured to open and close the passage; a control device controlling the opening/closing device to switch between connected and unconnected states of the first and second hydraulic pumps; a first hydraulic cylinder to which hydraulic fluid from the first hydraulic pump is supplied in the unconnected state; and a second hydraulic cylinder to which hydraulic fluid from the second hydraulic pump is supplied in the unconnected state. The control device controls the opening/closing device to be in the connected state when distributed flow rates of the hydraulic cylinders are a predetermined supply flow rate or lower and a difference between a pressure in a rod-side space and a pressure in a cap-side space of the hydraulic cylinder is a defined value or smaller.. ... Komatsu Ltd

03/01/18 / #20180058037

Work vehicle

A work vehicle includes a console box disposed to a side of an operator's seat, and a support including a rotational axis disposed in a left and right direction below the console box. The console box is configured to be rotatable in a forth and back direction. ... Komatsu Ltd

03/01/18 / #20180056776

Tractor

A tractor includes a vehicle body, an engine, a cooling device, a fan, and a first exterior member. The engine is disposed on the front side of the vehicle body. ... Komatsu Ltd

03/01/18 / #20180056438

Method for producing metal member

The method includes a step of preparing a first member made of a first metal and a second member made of a second metal having a smaller deformation resistance than the first metal, and a step of joining the first member and the second member. The step of joining includes a step of heating the first member and the second member by relatively rotating the first member and the second member, while pressing the first member and the second member against each other, without changing a relative positional relationship therebetween, and a step of cooling the first member and the second member heated, while being pressed against each other. ... Komatsu Ltd

02/22/18 / #20180051794

Power transmission device and work vehicle provided with power transmission device

A power transmission device for a work vehicle includes a boss section, a spline shaft, a rotational force transmission section, and a housing. The boss section includes a spline groove on an internal circumferential surface thereof. ... Komatsu Ltd

02/22/18 / #20180051693

Sliding component and method for producing the same

A sliding component and its producing method are provided. The sliding component includes a base section made of steel or cast iron, and a sliding section having a sliding surface, made of copper alloy including hard particles, and joined to the base section. ... Komatsu Ltd

02/22/18 / #20180051445

Wheel loader and method for automatically accumulating transport operation information of wheel loader

The wheel loader includes a boom, a bucket, a travel device, a travel distance measuring unit, a state determining unit, and an accumulating unit. The bucket is attached to the tip end of the boom. ... Komatsu Ltd

02/22/18 / #20180051441

Cab and work vehicle

A cab includes a dash panel disposed frontward of an operator's seat, and a monitor device disposed above the dash panel. The whole of the monitor device in the right-left direction overlaps a first front window when the monitor device is seen in the front-rear direction. ... Komatsu Ltd

02/22/18 / #20180050727

Working vehicle

A working vehicle includes a housing member in which fluid is housed, and a gauge that indicates a remaining amount of the fluid in the housing member. The gauge is disposed at a central portion of the housing member in a longitudinal direction.. ... Komatsu Ltd

02/22/18 / #20180050588

Crawler belt-type tractor

A crawler belt-type tractor includes a vehicle body, a travel device, an engine, and a fuel tank. The travel device is attached to the vehicle body. ... Komatsu Ltd

02/22/18 / #20180050385

Track link and method for manufacturing track link

A track link includes a tread surface, a shoe surface, a communicating part, and a seat formation part. The tread surface comes into contact with a roller for an undercarriage. ... Komatsu Ltd

02/15/18 / #20180044893

Working machine

A work machine includes plural cameras, a display unit and a controller controlling the cameras and the display unit. The controller includes an overview image generator generating an overview image from the images by the cameras, an image superimposing unit superimposing a top view image of the work machine on the overview image, a working-equipment display unit putting a part of working equipment in the top view image of the work machine in non- or transparent-display, and an operation judging unit judging at least one of operation of the working equipment and travel of the work machine. ... Komatsu Ltd

02/15/18 / #20180044884

Vertically-movable steps for working vehicles

A ladder includes: a front connecting member and a rear connecting member at a top step, respective upper ends of which are connected to a lateral side of a vehicle body in a pivotally movable manner and are juxtaposed with a predetermined space therebetween in a vehicle front-back direction; a front connecting member and a rear connecting member which are provided at a step under the top step, and respective upper ends of which are connected in a pivotally movable manner to both ends in the vehicle front-back direction of a step board. The front connecting member and the rear connecting member at least at the top step among steps positioned above a lowest step are rigid members. ... Komatsu Ltd

02/15/18 / #20180043929

Work vehicle and method for controlling work vehicle

An articulated work vehicle with linked front and rear frames includes a hydraulic actuator, a joystick lever operated by an operator, a control valve, a force imparting component, and a controller. The hydraulic actuator is driven hydraulically to change a steering angle of the front frame with respect to the rear frame. ... Komatsu Ltd

02/08/18 / #20180040174

Component information management system and component information management method

A parts information management system includes an identification device attached to a target part at an installation position and storing parts information for identifying the target part, a communication device communicating with the identification device to acquire the parts information, a transmitter transmitting acquisition information, and a management apparatus managing the received acquisition information. The parts information includes type information indicating the target part's type and unique information for distinguishing the target part from the target parts of the same type. ... Komatsu Ltd

02/08/18 / #20180038082

Control system for work vehicle, control method, and work vehicle

A current terrain acquisition device acquires current terrain information. The current terrain information indicates the current terrain to be worked, and includes the height of the current terrain at a plurality of points. ... Komatsu Ltd

02/08/18 / #20180038070

Control system for work vehicle, control method, and work vehicle

A current terrain acquisition device acquires current terrain information indicating a current terrain to be worked. A controller is configured to generate an inclined virtual surface extending from a current position of the work vehicle. ... Komatsu Ltd

02/08/18 / #20180038069

Control system for work vehicle, control method, and work vehicle

A current terrain acquisition device acquires current terrain information indicating the current terrain to be worked. A controller is configured to decide a virtual design surface that is located below the current terrain and has an inclination angle. ... Komatsu Ltd

02/08/18 / #20180038068

Control system for work vehicle, control method, and work vehicle

A terrain information acquisition device acquires terrain information about a work site. A controller is configured to decide an inclination angle of the current terrain along a travel direction of the work vehicle from the terrain information. ... Komatsu Ltd

02/08/18 / #20180038067

Control system for work vehicle, control method, and work vehicle

A controller is configured to acquire current terrain information indicating the current terrain in the travel direction of a work vehicle. The controller is configured to generate an inclined virtual surface extending form the current position of the work vehicle. ... Komatsu Ltd

02/08/18 / #20180037255

Work vehicle and method for controlling work vehicle

An articulated work vehicle with linked front and rear frames includes a joystick lever, a force imparting component, a speed sensor, and a controller. The joystick lever is configured to change a steering angle of the front frame with respect to the rear frame by operation by an operator. ... Komatsu Ltd

02/01/18 / #20180030692

Control system, work machine, and control method

A control system includes a cylinder pressure data acquisition unit that acquires cylinder pressure data indicating a pressure of operating oil of a hydraulic cylinder; an operation amount data acquisition unit that acquires operation amount data of an operating device; a pump flow rate calculation unit that calculates a first pump flow rate indicating a flow rate of the operating oil discharged from a first hydraulic pump and a second pump flow rate indicating a flow rate of the operating oil discharged from a second hydraulic pump in a splitting state in which a passage is closed based on the cylinder pressure data and the operation amount data; and a pump control unit that controls the first hydraulic pump and the second hydraulic pump based on the first pump flow rate and the second pump flow rate.. . ... Komatsu Ltd

02/01/18 / #20180030691

Work vehicle and method of controlling operation

A work vehicle detects pressure of hydraulic oil supplied to an arm cylinder. The work vehicle determines operation details for an arm. ... Komatsu Ltd

02/01/18 / #20180029464

Tractor

A tractor includes an air cleaner and a passageway arranged to surround the air cleaner. Alternatively, tractor includes a maintenance equipment, an engine, a top plate covering the engine, and a floor section disposed at a position lower than the top plate and in a non-overlapping position with the engine as seen from above. ... Komatsu Ltd

01/18/18 / #20180016969

Hydraulic servo device and turbocharger

A hydraulic servo device includes: a servo piston configured to move in an axial direction with respect to a device main body; and a stroke sensor configured to detect an amount of movement of the servo piston with respect to the device main body. The hydraulic servo device is configured to change a supply flow rate of exhaust gas to a turbine of a turbocharger by moving the servo piston according to applied hydraulic pressure. ... Komatsu Ltd

01/11/18 / #20180010320

Work vehicle, monitoring system for work vehicle, and tracked work vehicle

A work vehicle includes a rotary member, a support member, a sealing ring, a pressure controller, and a vehicle speed determination component. The rotary member has a first hydraulic fluid supply channel to supply the hydraulic fluid to the steering clutch, and is rotated by power from the transmission when the steering clutch is engaged. ... Komatsu Ltd

01/04/18 / #20180002901

Control system for work vehicle, control method, and work vehicle

A control system for a work vehicle includes at least one sensor, an operating device, and a controller. The operating device includes at least one operating member. ... Komatsu Ltd

01/04/18 / #20180002894

Control system for work vehicle, control method, and work vehicle

A control system for a work vehicle includes an acceleration detection device and a controller. The acceleration detection device detects an acceleration of the work vehicle. ... Komatsu Ltd

01/04/18 / #20180002892

Work vehicle and ripper device

A ripper device includes a first cylinder, a shank, and an arm. The first cylinder includes a tube and a rod, and is disposed to extend and retract in the forward and backward direction in a plan view of the ripper device. ... Komatsu Ltd

12/28/17 / #20170370072

Hydraulic excavator

A hydraulic excavator includes an upper revolving unit revolvably mounted on a lower traveling unit. A counterweight is disposed on a rear end part of the upper revolving unit. ... Komatsu Ltd

11/30/17 / #20170342687

Work machine control system, work machine, and work machine control method

A work machine control system that controls a work machine including a member that rotates about a shaft line includes a target construction shape generation unit that generates a target construction shape indicating a target shape of a construction target of the work machine; and a determination unit that outputs first information when the member is present on an air side which is a side on which the work machine is present in relation to the target construction shape and outputs second information when the member is not present on the air side.. . ... Komatsu Ltd

11/30/17 / #20170342680

Work machine control system, work machine, and work machine control method

A work machine control system that controls a work machine including a working device having a working tool that rotates about a shaft line includes: a target construction shape generation unit that generates a target construction shape indicating a target shape of a construction target of the work machine; a target shape calculation unit that calculates a control target shape which is a target shape when controlling rotation of the working tool from the target construction shape and calculates an extended target shape obtained by extending the control target shape; and a working device control unit that controls the rotation of the working tool about the shaft line based on a distance between the working tool and the control target shape and the extended target shape.. . ... Komatsu Ltd

11/30/17 / #20170342679

Construction machine control system, construction machine, and construction machine control method

A construction machine control system includes: a target construction ground shape generation unit which generates a target construction ground shape indicating a target shape of an excavation target; a working device control instruction determination unit which outputs an instruction for driving the working device in a working device operation plane orthogonal to at least one of a boom axis, an arm axis, and a bucket axis based on an operation state of at least one of an arm and a bucket and a distance between the bucket and the target construction ground shape; and a tilting control instruction determination unit which outputs an instruction for performing a tilting control of the bucket about a tilting axis based on a tilting state of the bucket and the distance between the bucket and the target construction ground shape.. . ... Komatsu Ltd

11/30/17 / #20170342678

Construction machine control system, construction machine, and construction machine control method

A construction machine control system includes: a target construction ground shape generation unit generating a target construction ground shape indicating a target shape of an excavation target; a tilting data calculation unit calculating tilting data of a bucket tilted about a tilting axis; a regulation point position data calculation unit calculating position data of a regulation point set in the bucket based on external shape data of the bucket including at least width data of the bucket; a tilting target ground shape calculation unit calculating a tilting target ground shape extending in a lateral direction of the bucket in the target construction ground shape based on the position data of the regulation point, the target construction ground shape, and the tilting data; and a working device control unit controlling a tilting of the bucket based on a distance between the regulation point and the tilting target ground shape.. . ... Komatsu Ltd

11/30/17 / #20170341915

Work vehicle and work vehicle control method

A method of controlling a work vehicle including a steering cylinder operating a steering wheel by hydraulic oil supplied thereto, a steering member receiving an input for operating the steering wheel, and a steering valve unit which is connected to the steering member and supplies the hydraulic oil to the steering cylinder, the method includes: obtaining a speed of the work vehicle and a steering angle of the steering wheel; and decreasing a correction factor for correcting a deviation amount of actual steering angle information of the steering wheel with respect to target information as information on a target steering angle of the steering wheel with respect to an operation amount of the steering member when the speed of the work vehicle increases in a case where the steering angle of the steering wheel obtained based on the steering angle is in a predetermined range from a neutral position.. . ... Komatsu Ltd

11/23/17 / #20170335918

Cylinder rod

The cylinder rod of a hydraulic cylinder includes a body portion having a bar shape, and a head portion arranged at a longitudinal end of the body portion. The body portion has a coating formed on its outer peripheral surface. ... Komatsu Ltd

11/23/17 / #20170335548

Work vehicle

Lift cylinder is attached to a center part of a vehicle body in a vehicle width direction. The lift cylinder causes a work implement to move up and down. ... Komatsu Ltd

11/16/17 / #20170328253

Reducing agent supply device and method for controlling reducing agent supply device

A reduction-causing agent supply device includes a tank to store a reduction-causing agent, a pumping unit to pump the reduction-causing agent, a reduction-causing agent supply passage to supply the reduction-causing agent, an injection nozzle to inject the reduction-causing agent into an exhaust pipe, a drawing-back unit to draw the reduction-causing agent toward the tank, and a controller. After stop of an engine, the controller performs: reduction-causing agent drawing-back process of drawing the reduction-causing agent toward the tank and introducing exhaust gas from the injection nozzle into the reduction-causing agent supply passage; and gas discharge process of supplying the reduction-causing agent to compress the exhaust gas inside the reduction-causing agent supply passage, discharging the compressed exhaust gas from the injection nozzle, and closing a valve of the injection nozzle before the reduction-causing agent reaches the injection nozzle.. ... Komatsu Ltd

11/16/17 / #20170328029

Work vehicle and ripper device

A ripper device for a work vehicle includes a first cylinder, a shank, and a second cylinder. The shank is actuated by the first cylinder and is aligned with the first cylinder in plan view. ... Komatsu Ltd

11/16/17 / #20170327046

Work vehicle

An access device is configured to be switched between a stored state in which an access member is stored in a vehicle body and a deployed state in which the access member is deployed. In the stored state, an exterior cover becomes a portion of the an exterior surface of the vehicle body and the access member is stored inside the vehicle body. ... Komatsu Ltd

11/09/17 / #20170321395

Posture calculation device of working machinery, posture calculation device of excavator, and working machinery

A posture calculation device of working machinery includes: a measuring device configured to detect an angle speed and acceleration; a posture angle calculation unit configured to obtain a posture angle of the working machinery from the detected angle speed and the detected acceleration; a first complementary filter to which a first cutoff frequency is set and configured to decrease a noise included in the obtained posture angle to output a first posture angle; a second complementary filter to which a second cutoff frequency different from the first cutoff frequency is set and configured to decrease a noise included in the obtained posture angle to output a second posture angle; and a switching unit configured to switch between the first posture angle and the second posture angle to output the first posture angle or the second posture angle according to a state of the measuring device.. . ... Komatsu Ltd

11/09/17 / #20170321392

Work vehicle

A work vehicle includes a vehicle body, a travel device, a driving source, and a cooling device. The travel device is provided below the vehicle body. ... Komatsu Ltd

10/26/17 / #20170305018

Surrounding monitoring device of work machine and method of monitoring surroundings of work machine

A surrounding monitoring device of a work machine includes: a display unit; a plurality of cameras acquiring a surrounding condition of the work machine; an image processing unit generating a bird's-eye image indicating the surrounding condition of the work machine on the basis of images imaged by the cameras; a work machine operation detection unit detecting an operation of the work machine; and a display control unit displaying, on the display unit, a single camera image imaged by one or more cameras, of the plurality of cameras, the bird's-eye image, mechanical gauge display, menu display, and/or breakdown information display. Further, when the operation of the work machine is detected, the display control unit performs control of enlarging surroundings of the work machine on the bird's-eye image, compared with surroundings of the work machine on the bird's-eye image before the operation of the work machine is detected.. ... Komatsu Ltd

10/12/17 / #20170294938

Communication system and work vehicle

A communication system provided to a working vehicle includes: an information receiving unit that communicates with identification devices and receives identification information; a first area information storage that stores first area information indicating an area where use of the information receiving unit is permitted; a comparing unit that compares the first area information with second area information indicating an area where the working vehicle is used; and a communication control unit that prohibits the information receiving unit from outputting electric waves when the second area information is not included in the first area information.. . ... Komatsu Ltd

10/12/17 / #20170294057

Identification information acquisition system and working vehicle

A identification information acquisition system provided in a working vehicle includes: a plurality of identification devices; and a plurality of communication devices that communicate with the plurality of identification devices. The plurality of communication devices include a first communication device and a second communication device, an operation of which is controlled by the first communication device. ... Komatsu Ltd

10/12/17 / #20170292247

Control system for work vehicle, control method and work vehicle

A control system for a work vehicle having a work implement includes a first operating lever for the work implement, a first operating member and a controller. The first operating member is provided on the first operating lever. ... Komatsu Ltd

10/05/17 / #20170287651

Capacitor and capacitor module

An object of the present invention is to provide a capacitor and a capacitor module having a long life and capable of a stable action. Therefore, an electrolytic solution l obtained by dissolving an electrolyte salt having a lower hydrolyzability and a higher reaction potential in an electrode than an amidine salt containing a cation which is an imidazolium in a solvent and a sub solvent that reduces resistance of the electrolytic solution is packed in a cell. ... Komatsu Ltd

10/05/17 / #20170285658

Work vehicle control system

A work vehicle control system controls a work vehicle having a braking device. The work vehicle control system includes a location information generating unit that obtains and outputs a location of the work vehicle, and a control unit that controls the braking device based on location information of the work vehicle obtained from the location information generating unit. ... Komatsu Ltd

10/05/17 / #20170285657

Control system for work machine, work machine, and control method for work machine

A control system for a work machine includes a non-contact sensor, a position output device, a correction position calculation unit, and a control device. The non-contact sensor detects a periphery of a work machine. ... Komatsu Ltd

10/05/17 / #20170284274

Dump truck

A dump truck includes: a vehicle body; a cooling fan (9a) disposed in front of the vehicle body in a travel direction; an engine (7) disposed behind the cooling fan (9a); a platform (8) covering the cooling fan (9a) and a top of the engine (7); an exhaust aftertreatment device (11) disposed behind the engine (7) and above the platform (8); an opening (12a) through which an upper side of the platform (8) communicates with a lower side thereof and provided in front of the exhaust aftertreatment device (11); and a duct (21, 22) provided to a lower surface of the platform (8) and comprising a base-end opening connected to the opening (12a) and a leading-end opening (21a) directed to the cooling fan (9a).. . ... Komatsu Ltd

10/05/17 / #20170284071

Calibration system, work machine, and calibration method

A calibration system includes at least a pair of imaging devices in a work machine having a working unit that image an object; a position detector detecting a position of the working unit; and a processing unit that, by using first position information about a predetermined position of the working unit captured by the imaging devices, second position information about the predetermined position detected by the position detector in an attitude of the working unit taken when the imaging devices image the predetermined position, and third position information about a predetermined position outside the work machine, imaged by the imaging devices, obtains information about a position and an attitude of the imaging devices, and transformation information used for transforming a position of the object imaged by the imaging devices from a first coordinate system to a second coordinate system.. . ... Komatsu Ltd

10/05/17 / #20170284070

Control device for work machine, work machine, and method of controlling work machine

A control device for a work machine is a device for controlling a working unit of a work machine to excavate an object to be excavated. The control device includes a control unit for controlling the working unit to prevent a working implement of the working unit from crossing a predetermined target profile, and a switching unit for defining the target profile as an offset profile separated by a predetermined distance from a target excavation profile that is a target profile for finishing of the object to be excavated or the target excavation profile, based on an attitude of the working implement relative to the target excavation profile.. ... Komatsu Ltd

10/05/17 / #20170284069

Surrounding monitoring device for work machine

A surrounding monitoring device for a work machine including a work device on an upper swing body includes: a plurality of cameras configured to acquire a surrounding condition of the work machine; an image processor configured to generate a bird's-eye image based on images imaged by the plurality of cameras; a display configured to display at least one of: a single camera image imaged by one of the plurality of cameras; and the bird's-eye image; and a display controller configured to display, on the at least one of the single camera image and the bird's-eye image, direction guide information arranged from a reference position of the upper swing body to surroundings of the upper swing body.. . ... Komatsu Ltd

10/05/17 / #20170284066

Working vehicle

A working vehicle includes a vehicle main body to which a tire is mounted, an excavation member coupled to the vehicle main body on a front side of the vehicle main body and that includes an end part arranged on an outer side of the tire in a vehicle-width direction of the vehicle main body, a hydraulic cylinder arranged at a center part in the vehicle-width direction and that is to move the excavation member, a housing that houses a power transmission mechanism to transmit power to the tire, and a camera supported by a part of the vehicle main body on a lower side of the hydraulic cylinder and on an upper side of the housing and that acquires an image of a region that includes end parts on both sides of the excavation member and that is between the excavation member and the tire.. . ... Komatsu Ltd

10/05/17 / #20170284058

Cooling device and construction machine

A cooling device includes: an introduction pipe configured to introduce a charge air supercharged by a supercharger; a first aftercooler connected to the introduction pipe and configured to cool the charge air; a branch pipe branched from the introduction pipe; a second aftercooler connected to the branch pipe and configured to cool the charge air; and a cooling fan configured to supply a cooling wind to the first aftercooler and the second aftercooler, in which the first aftercooler and the second aftercooler are disposed to be shifted from each other in a rotation axis direction of the cooling fan.. . ... Komatsu Ltd

10/05/17 / #20170282961

Work vehicle

A controller disables the motion of a steering cylinder brought about by a steering lever when an enabled state is selected via a lever switch and an instruction to start an engine is issued via a main switch.. . ... Komatsu Ltd

09/28/17 / #20170280048

Evaluation device

An evaluation device includes a first display control unit that displays imaging data acquired by an imaging device on a display screen of a display device, and a second display control unit that displays on the display screen a guide display based on work vehicle data on a work vehicle imaged, to determine an imaging position of the imaging device.. . ... Komatsu Ltd

09/28/17 / #20170278425

Evaluation apparatus and evaluation method

An evaluation apparatus includes a detected data acquisition unit that acquires photograph data of a bucket of a work equipment, a first display control unit that displays the photograph data on a display screen of a display device, a second display control unit that displays on the display screen a graphic representing at least part of an outline of the bucket as viewed from a side, and moves the graphic on the display screen by an operation of an input device, and an identification unit that distinguishes the bucket from excavated material above an opening end of the bucket on the display screen based on the graphic aligned with the bucket.. . ... Komatsu Ltd

09/28/17 / #20170277163

Communication system and work vehicle

A communication system provided in a working vehicle includes: an identification device that stores identification information; a communication device that outputs electric waves to communicate with the identification device; an ambient temperature judging unit that judges whether or not an ambient temperature of the environment in which the identification device is disposed exceeds an operational temperature at which an operation of the identification device is ensured; and a communication controller that prohibits the communication device from outputting the electric waves when the ambient temperature judges that the ambient temperature exceeds the operational temperature.. . ... Komatsu Ltd

09/28/17 / #20170276055

Hydraulic pump/motor with rotation detection mechanism

A hydraulic pump/motor includes a rotational shaft rotatably attached inside a casing, a cylinder block configured to rotate together with the rotational shaft, a plurality of pistons, a swash plate, a valve plate, and a rotation detection mechanism. The rotation detection mechanism includes a detection target section having three or more recesses formed on an outer peripheral surface of the cylinder block in a unique arrangement pattern with different arc lengths between the three continuous recesses with respect to one rotational direction of the rotational shaft and being formed so as not to include the unique arrangement pattern with respect to the other rotational direction of the rotational shaft, each of the three or more recesses having a cross section having a same semicircular shape perpendicular to a direction of the rotational shaft; and a rotation sensor arranged in the casing in a state of facing the detection target section.. ... Komatsu Ltd

09/28/17 / #20170274896

Work vehicle and method for controlling same

A control unit in a work vehicle executes an automatic downshift for shifting a transmission from a current speed range to a speed range that is lower than the current speed range when at least a first condition, a second condition, a third condition, and a fourth condition are satisfied. The first condition is that an operating amount of an accelerator operating member of the work vehicle is equal to or greater than a predetermined accelerator threshold. ... Komatsu Ltd

09/28/17 / #20170274762

Work vehicle

A work vehicle includes a front wheel, a rear wheel, a liquid tank, a front-wheel fender, a rear-wheel fender, a floor portion, and an electric-component room. The front wheel, the rear wheel, and the liquid tank are supported by a vehicle body. ... Komatsu Ltd

09/21/17 / #20170268204

Control system for work vehicle, control method, and work vehicle

A control deciding unit for deciding to execute a leveling control for controlling a work implement so that the work implement moves along a design terrain when a leveling determination condition is satisfied. The control deciding unit decides to execute a surface compaction control for limiting the velocity of the work implement toward the design terrain in response to the distance between the work implement and the design terrain when a surface compaction determination condition is satisfied. ... Komatsu Ltd

09/21/17 / #20170268198

Control system for work vehicle, control method, and work vehicle

A distance obtaining unit obtains the distance between a work implement and a design terrain. A work aspect determining unit determines a work aspect by the work implement. ... Komatsu Ltd

09/14/17 / #20170260717

Work machine and correction method of working equipment parameter for work machine

A work machine includes: first working equipment with first working equipment parameter; second working equipment including a parallel link and being attachable to the first working equipment; a swing angle detector that detects swing angle information of the first working equipment; an attitude calculating unit that calculates an attitude of the first working equipment based on the detected swing angle information of the first working equipment; a working equipment parameter storage that stores the first working equipment parameter defined for a component of the first working equipment; a correction information acquiring unit that acquires information on the second working equipment as correction information; and a working equipment parameter correction unit that corrects the first working equipment parameter based on the correction information on the second working equipment acquired by the correction information acquiring unit.. . ... Komatsu Ltd

09/14/17 / #20170260714

Bulldozer

A first grille member extends from the left side of the vehicular body toward the right side. A second grille member extends from the first grille member further toward the right side. ... Komatsu Ltd

09/07/17 / #20170255895

Evaluation device and evaluation method

An evaluation device includes a detection data acquisition unit that acquires detection data including a detected movement trajectory of a predetermined portion of a working unit of a working vehicle based on operation data of the working unit from a movement starting position to a movement ending position, detected by a detection device that detects an operation of the working unit, a target data generation unit that generates target data including a target movement trajectory of the predetermined portion of the working unit, and an evaluation data generation unit that generates evaluation data of an operator who operates the working unit based on the detection data and the target data.. . ... Komatsu Ltd

08/31/17 / #20170248439

Control system for work machine, work machine, and management system for work machine

A control system includes: a detector detecting a position of a work machine running on a running path; a non-contact sensor detecting an object at a side of the running path; a generator generating map data of a work site based on detection data from the detector and the non-contact sensor; a first storage storing past map data generated in the generator based on the detection data from the detector and the non-contact sensor acquired in a predetermined period in a past; a second storage storing current map data generated in the generator based on the detection data from the detector and the non-contact sensor; a first calculator calculating integrated map data by integrating the past map data and the current map data; and a second calculator by matching the integrated map data and the detection data from the non-contact sensor, calculates the position of the work machine.. . ... Komatsu Ltd

08/31/17 / #20170247861

Work machine control device, work machine, and work machine control method

A control device includes a control unit configured to change a change rate of a moving speed of a working unit of a work machine according to the moving speed of the working unit in a timing of switching between intervention control toward the working unit and control of the working unit based on an operation command from an operation device.. . ... Komatsu Ltd

08/24/17 / #20170241316

Work vehicle

The reducing agent tank has a tank main body and a feed pipe. The tank main body stores a reducing agent to be supplied to an exhaust gas treatment device. ... Komatsu Ltd

08/24/17 / #20170241106

Construction machine control system, construction machine, and method of controlling construction machine

A control system controls a construction machine that includes a work machine including a bucket having a plurality of tilting mechanisms. The control system includes: a tilt angle sensor that is provided in the bucket so as to detect tilt angle data including a rotation angle of the bucket about the tilt shaft, the tilt angle sensor being capable of detecting an inclination angle with respect to a horizontal plane; a data acquisition unit to which the tilt angle data is output from the tilt angle sensor; a data fixing unit that fixes the tilt angle data output to the data acquisition unit based on a fixing command to generate fixed data; and a work machine control unit that controls the work machine based on the fixed data until the fixing command is disabled.. ... Komatsu Ltd

08/03/17 / #20170220044

Work machine control system, work machine, and work machine management system

A work machine control system is configured to control a work machine that travels on a travel route and includes a position detection unit, a non-contact sensor, and a control unit. The position detection unit detects a position of the work machine. ... Komatsu Ltd

08/03/17 / #20170220042

Work machine control system, work machine, and work machine management system

A work machine control system is configured to control a work machine that travels in an operation region and includes a position detection unit, a non-contact sensor, and a control unit. The position detection unit detects a position of the work machine. ... Komatsu Ltd

08/03/17 / #20170219053

Planetary gear type transmission

A first carrier rotates integrally with an input shaft. A third sun gear and a fourth sun gear rotate integrally with a first intermediate shaft. ... Komatsu Ltd








ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009



###

This listing is an abstract for educational and research purposes is only meant as a recent sample of applications filed, not a comprehensive history. Freshpatents.com is not affiliated or associated with Komatsu Ltd in any way and there may be associated servicemarks. This data is also published to the public by the USPTO and available for free on their website. Note that there may be alternative spellings for Komatsu Ltd with additional patents listed. Browse our Agent directory for other possible listings. Page by FreshPatents.com

###