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Hohai University patents


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

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "H" | Hohai University-related inventors


Test system and test method for detecting cement content of cement mixing pile body in real time

The present invention discloses a test system and a test method for detecting the cement content of cement stirring pile body in real time at a construction site. The test system specifically includes a cement slurry density measuring apparatus and a cement admixing amount calculating apparatus. ... Hohai University

Municipal solid waste landfill barrier system capable of prolonging breakthrough time of leachate and manufacturing method thereof

The invention relates to a msw landfill barrier system capable of prolonging breakthrough time of leachate and a manufacturing method thereof. The system comprises a leachate collection and removal layer, a first hdpe (high-density polyethylene) geomembrane infiltration proof layer (2), a clay liner (5) and a groundwater collection and removal layer (6) which are sequentially stacked from top to bottom. ... Hohai University

Ship draught detection apparatus and its detection method

The present invention discloses a ship draught detection apparatus and its detection method. The ship draught detection apparatus includes two servo motors, a guide rail, a sonar detection device, a traction device, a locating device, and a control device. ... Hohai University

Damage detection apparatus for lock gate sill

The present invention discloses a damage detection apparatus for a lock gate sill, including a support, a water storage tank, a water inlet barrel, a filter device, a water pump, and a control device, wherein a barrier is vertically disposed at the bottom of the water storage tank, multiple water discharge pipes are vertically disposed in the barrier, upper ends of the water discharge pipes are communicated with the water storage tank, the water discharge pipes have different heights, lower ports of the water discharge pipes together compose a truncated conical cavity, a camera is disposed at the bottom of the water storage tank in a sealed manner, and a lens of the camera is located in an upper part of the truncated conical cavity. When it is desired to perform damage detection for the lock gate sill, muddy water is filtered by the filter device into clear water, and the clear water is pressurized by the water pump and then discharged from the water discharge pipes, such that the muddy water in the barrier is continuously diluted by clear water, the camera is in a shooting environment of clear water, and the lock gate sill is shot for detection at this time, whereby it is ensured that the taken picture has good definition, and thus the position of abrasion and the amount of abrasion of the lock gate sill can be clearly determined.. ... Hohai University

Electromagnetic multiaxial fatigue testing machine

An electromagnetic multiaxial fatigue testing machine includes a test piece fixing platform and an electromagnet loading mechanism arranged on a frame, wherein the electromagnet loading mechanism includes a first loading device for bend loading, and a second loading device for axial and torsional loading. The first loading device includes a first permanent magnet and a first electromagnet with a direction of a magnetic force generated therebetween is orthogonal to an axial direction of a test piece; the second loading device includes a second permanent magnet and a second electromagnet mounted on a swinging pair with a direction of a magnetic force generated therebetween is parallel to the axial direction of the test piece.. ... Hohai University

Assembled type pier column member with steel-concrete composite structure

A segment-assembled type pier column member with a steel-concrete composite structure includes a reinforcement tube embedded in a pile cap, wherein the reinforcement tube is connected with a bottom of a lower segment of a hollow steel tube pier and is poured with concrete, and pier columns in upper and lower segments are reinforced by means of segment connecting and being embedded with local reinforcing meshes. A steel cross beam is connected with an upper segment of the hollow steel tube pier in an assembled way. ... Hohai University

Method for coating metal nanoparticles on oxide ceramic powder surface

The present invention discloses a method for uniformly coating metal nanoparticles without a carbon impurity on an oxide ceramic powder surface, which includes the steps of putting grinded and mixed a metal organic material and oxide ceramic powder into a rotational reaction chamber, then bubbling oxidizing gas under a rotational and heating condition to oxidize the metal organic material into a metal oxide, and finally bubbling reducing gas to reduce the metal oxide into nanoparticles in a metallic state, so as to implement the uniform coating of the nanoparticles in the metallic state, and avoid coarsening and growing problems of nanoparticles led by a long-term coating reaction under a high temperature. The present invention has a simple method and a short preparation period, and the metal nanoparticles prepared are uniformly dispersed and have wide application prospects in multiple fields like catalytic materials and conductive ceramics.. ... Hohai University

Traffic data stream aggregate query method and system

A traffic data stream aggregate query method and system includes the steps of acquiring spatial-temporal information of a mobile object to generate a traffic data stream, dividing data space into cells, grouping adjacent cells with similar frequency into few buckets, calculating kalman gains of the buckets based on frequencies of the buckets, and indexing the buckets using a binary partition tree to form a bpt index of the current timestamp, and serializing the bpt after the end of the current timestamp to form a historical index; and performing aggregate query, wherein an optimum estimation value of the bucket frequency is utilized to replace for calculating when the frequency of the bucket changes a lot. The system includes: an information collection module, a data processing module, an index processing module, an application service module and an index storage module.. ... Hohai University

Tungsten carbide-cubic boron nitride composite material and preparation method thereof

A tungsten carbide-cubic boron nitride composite material and preparation method thereof mainly includes wc and cbn, wherein the wc powder is coated with co nano-layer and the cbn powder is coated with sio2 nano-layer, and hardness and toughness of the composition material can be improved by coating. The method for preparing a tungsten carbide-cubic boron nitride composite material adopts chemical vapor deposition method and high temperature sintering method. ... Hohai University

Device for purifying cropland effluents

A device for purifying first-stage drainage effluents from dry croplands, the device including: a) a plastic corrugated pipe including an upright segment and a horizontal segment, the upright segment comprising plastic mesh openings; b) a steel wire mesh box filled with stuffing pellets including biological carriers; and an inspection cover. The plastic mesh openings are disposed at one end of the upright segment, the other end of the upright segment is connected to one end of the horizontal segment, and the other end of the horizontal segment is connected to the steel wire mesh box. ... Hohai University

Facility secondary no3- salinized soil modifier, preparation method and modification method

A facility secondary no3− salinized soil modifier and a modification method are disclosed. The present invention involves the preparation processes of two biological soil modifiers a and b and application methods thereof, which are specifically described as follows: (1) soil modifier a.: solid, obtained by microbial fermentation with straw powder and rice bran and the like as raw materials. ... Hohai University








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