Southwest Petroleum University

Chengdu University of Information Technology

Sichuan University

Southwest Jiaotong University

Chengdu University of Technology

Laoken Medical Technology Co., Ltd.

Jun Liu

Qiang Yang

Qingyou Liu

Li Yang

Jiawei Wang

Ming Zhu

Qiyu Liu

Xiaoqiang Guo

Minyao Tan

Dapeng Zhang

Xiaozhao Jin

Zhenyu Wang

Gexiang Zhang

Guorong Wang

Feng Gao

Haiyan Zhu

Yufa He

Xianghui Chang

Xiang Chen

Xia Liu

Qijun Liu

Miao Zhang

Nuwen Xu

Yuepeng Sun

Biao Li

Zhuang Li

Haoyu Mao

Yong Xia

Peiwei Xiao

Yong Liu

Fuping Zhou

Anchao Wei

Xian Liu

Xiaohong He

Linlin Zeng

Qin Qin

Jiangxiong Luo

Jianxun Wang

Junchuan Zhang

Cong Zhang

A single-pulse experimentation device based on a Hopkinson pressure bar and an experimentation method include an experimentation assembly and a pulse controlling assembly, the experimentation assembly includes a power generating mechanism, an incident bar and a transmission bar, a space between the incident bar and the transmission bar is for accommodating a sample, and the sample is for bearing and transferring a dynamic-loading compressional wave transmitted by the incident bar; the pulse controlling assembly includes: a stretching assembly that is internally hollow and is connected to the transmission bar; and an elastic assembly and a gear regulating mechanism that are located inside the stretching assembly, and are connected to corresponding positions of the stretching assembly, respectively; wherein the gear regulating mechanism is configured for driving the stretching assembly to switch between a first position state and a second position state.

Single-pulse experimentation device based on hopkinson pressure bar and experimentation method

An automatic transport device for cleaning machines includes a transport base. A lifting-lowering assembly and a tray are provided on the transport base. The tray is connected to the transport base through the lifting-lowering assembly, and can be driven by the lifting-lowering assembly to reciprocate in a height direction. A top surface of the tray is provided with a translation assembly for transferring the shelf to the transport platform. A first mounting cavity is provided at each of front and rear ends of the tray. The translation assembly is connected to a side wall of the first mounting cavity. A second mounting cavity is provided at each of right and left ends of the tray. The second mounting cavity is provided with a limiting assembly, a lifting-lowering sensing assembly and a distance sensing assembly. An interactive system is provided in the transport base.

Automatic transport device for cleaning machine

An apparatus for dismounting and mounting a high-voltage line T-connector in a hot-line operation includes a lifting platform, a four-axis platform and an end-effector mechanism; the four-axis platform and the end-effector mechanism are both electrically conductive structures; the four-axis platform is fixedly mounted on the top of the lifting platform, and an insulating layer is provided between the four-axis platform and the lifting platform; the four-axis platform is movable in the X direction, the Y direction, and the Z direction, and is rotatable around the Z direction; the four-axis platform is provided with an equipotential mechanism; the end-effector mechanism is detachably fastened to the four-axis platform; and a bolt loosening/tightening mechanism or a nut cutting device capable of moving in the X direction, the Y direction, and the Z direction is provided on the end-effector mechanism.

Apparatus for dismounting and mounting high-voltage line T-connector in hot-line operation

A sea creature cleaning robot for an intake tunnel for a nuclear power plant includes a frame, cutter assemblies, and walking wheel assemblies; the frame is used for mounting and fixing cutter mounting seats and crawler wheels; the walking wheel assemblies mounted on the frame enable the entire device to normally walk in a tunnel; the cutter assemblies control the height of cutters by means of hydraulic cylinders to make the cutters contact the inner wall of the tunnel, and the hydraulic cylinders drive the saw-toothed cutters to move back and forth to remove sea creatures attached to the inner wall of the tunnel; the cutter assemblies are uniformly distributed on the frame, so as to ensure full coverage of the cleaning range of the cross section of the tunnel. The robot can clean sea creatures in tunnels in place of manual work to significantly improve the cleaning efficiency.

Sea creature cleaning robot for intake tunnel for nuclear power plant

The present invention discloses a testing device and method for simulating longitudinal-transverse-torsional coupled nonlinear vibration of a drill string in deep-water riser-free drilling. The testing device comprises a pool (), a motor () and a hook load adjustment device (), wherein a guide wheel () is provided on the top of the pool (); a support seat A () and a support seat B () are fixed on the bottom surface of the pool (); an organic glass tube () is fixed between the support seat A () and the support seat B (); a casing () is respectively provided on the top surface of the support seat B () and the top surface of the trailer (); the left end of the plastic tube () extends into the organic glass tube () along the axis of the organic glass tube (). The present invention further discloses a simulation method. The present invention has the following beneficial effects: the structure is compact; the longitudinal-transverse-torsion coupled vibration responses of the drill string under different rotating speeds of the drill string, ocean flow rates, flow rates of the drilling fluid, torsional excitations and longitudinal excitations at the bottom of the formation section is simulated, thereby filling up the blank in the riser-free drilling system.

Test device for simulating longitudinal-lateral-torsional coupled nonlinear vibration of drill string of deepwater riserless drilling and method therefor

A mechanics experiment system for a perforated string in underground perforating blasting of an oil-gas well. The system includes an experiment water pool, a perforated string arranged in the experiment water pool, a signal amplifier, an A/D converter and a computer. The signal amplifier, the A/D converter and the computer are arranged outside the experiment water pool and are sequentially electrically connected; the perforated string includes an oil pipe, a packing tube, a sleeve, an acceleration testing short joint A, a damper, an acceleration testing short joint B and a perforating gun which are sequentially connected from top to bottom.

Mechanics experiment system and method for perforated string in underground perforating blasting of oil-gas well

Growing community of inventors

Chengdu, China

Jun Liu