6results about How to "Frictional stability" patented technology

The utility model discloses a vertical end face contact friction wear testing machine, which belongs to the technical field of tribology research and experimental test, and comprises a base and a mounting rack fixed on the base, the upper end part of the mounting rack is provided with an upper mounting seat, the lower end part of the mounting rack is provided with a lower mounting seat, and the lower mounting seat is fixedly connected with the base. A loading mechanism and a measuring structure are mounted in the mounting frame, the loading mechanism comprises a nut follow-up block, a plurality of through holes are formed in the nut follow-up block, a guide rail, a ball screw and the measuring structure are mounted in the through holes respectively, and the top of the ball screw is connected with a servo motor. The vertical end face contact friction wear testing machine disclosed by the utility model can ensure that the load between samples reaches a preset value and is stable, so that the load control is realized.

The utility model relates to the technical field of steering gear wear resistance detection, in particular to an automobile steering gear wear resistance detection device which comprises a base, the bottom end of the base is fixedly connected with mounting feet, one end of the top of the base is fixedly connected with a fixed mounting block, and the top of the fixed mounting block is fixedly connected with an output motor. An output motor is fixedly connected to one end of the top of the base, a fixed connecting disc is fixedly connected to the output end of the output motor, a clamp is arranged on the surface of the fixed connecting disc, a fixed mounting plate is fixedly connected to the other end of the top of the base, and a fixed supporting groove is formed in the top of the fixed mounting plate. The end portion of the steering gear can be stably erected, when the steering gear is subjected to rotation detection, the steering gear can stably rotate on the inner sides of the fixed supporting groove and the fixed limiting mechanism, the stability in the detection process can be guaranteed, the whole steering gear can stably run, and operation is convenient.

The rolling rotor type compressor comprises an air cylinder, a rotor and a sliding piece, an oil spraying hole penetrating through the top of the sliding piece to the bottom of the sliding piece is formed in the sliding piece, and pressure-containing lubricating oil in a back pressure space is sprayed into a top gap through the oil spraying hole. According to different working conditions, one or more oil injection holes can be formed, the section shape can be round, directional or irregular, and the pressure-containing lubricating oil can be lubricating oil obtained after oil-gas separation or lubricating oil pressurized through a pump. On one hand, lubricating oil is sprayed into the top gap, a friction pair at the top gap is regulated to form a stable oil film, friction between the top of the slip sheet and the outer wall of the rotor is reduced, and mechanical efficiency is improved; on the other hand, the pressure-containing lubricating oil directly impacts the leakage flow at the top gap from the oil injection hole, the leakage flow of the top gap can be remarkably reduced, and the volume efficiency is improved. According to the utility model, the coupling optimization of friction and leakage at the top of the slip sheet of the rolling rotor type compressor can be realized, so that the comprehensive efficiency of the compressor is obviously improved.

This invention discloses a water washing tank and production line for single-strand high-speed hot-dip galvanizing, relating to the field of metal surface treatment technology. It aims to solve the technical problem that simply relying on circulating water rinsing may not be sufficient to completely remove some strongly adhering metal debris and particles from the surface of steel wire. The system includes a wire feeding frame, a sanding cloth belt machine, a wire drawing machine, a wiping device, a fluxing tank, a drying device, a galvanizing tank, a cooling device, and a wire unloading machine. The water washing tank is positioned between the wire drawing machine and the wiping device. The water washing tank includes a first circulating water tank, a circulating flushing chamber, a second circulating water tank, and a reclaimed water tank. A debris removal component is arranged between the first circulating water tank and the circulating flushing chamber. This component can scrape and rub the outer surface of the steel wire to remove the metal particles adhering to it. This invention has the advantage of improving the cleaning effect on steel wire through multiple cleaning methods.

The application relates to the technical field of ship parking production, and discloses a rope climbing machine for quickly hoisting a water pump, which comprises a shell and a rope wheel, a guide wheel is rotationally connected to the middle part of the inner cavity of the shell, a rope is jointly wound around the rope wheel and the guide wheel, an extrusion block is arranged at the top of the upper extrusion part, a fixed block is arranged at the bottom of the lower extrusion part, an extrusion groove with the same direction as the lower extrusion part is arranged at the top of the fixed block, and the lower extrusion part is movably connected in the extrusion groove. The device realizes the preliminary braking effect on the rope through the extrusion of the extrusion block, the upper extrusion part and the lower extrusion part of the rope are extruded with each other, significant frictional resistance is generated, the movement of the rope in the extrusion groove is effectively prevented, the braking performance during falling is enhanced, the tensioning part of the rope is subjected to downward pressure by the tensioning wheel to tighten the rope, so that the stable friction between the rope and the rope wheel is ensured, and the risk of slipping is effectively reduced.

The one-handed needle core extraction and negative pressure suction device for puncture biopsy comprises a tube body, a hollow puncture needle, a flexible puncture needle core, a piston rod, a rubber piston sleeve, a piston driving rod and a gear component. The partition divides the space in the tube body into a piston rod insertion hole and a piston driving rod insertion hole. The puncture needle is installed on the needle connecting tube. The piston rod comprises piston rod teeth, the piston driving rod comprises piston driving rod teeth, the piston rod is provided with a piston rod needle core insertion hole, the rubber piston sleeve is provided with a rubber piston sleeve needle core insertion hole, the tube body is provided with a tube body needle core insertion hole and a tube body needle core threaded hole, the tube body needle core threaded hole is provided with a tube body needle core fixing screw, and the piston rod is provided with a needle core guide wheel device, so that the puncture needle can be lifted and inserted and the puncture needle core can be extracted while performing negative pressure suction.