5results about How to "Achieve damping" patented technology

The utility model discloses a train derailment rotary anti-collision device which comprises an anti-collision barrel body, a stand column is fixedly connected to the inner wall of the anti-collision barrel body, a cylinder body is fixedly connected to the side, close to the anti-collision barrel body, of the stand column, an oil storage cylinder barrel is arranged in the cylinder body, a working cylinder barrel is arranged in the cylinder body, and a hydraulic cylinder barrel is arranged in the working cylinder barrel. A base is arranged at the bottom of the cylinder body, a piston is slidably connected into the working cylinder barrel, and a rod body is fixedly connected to the side, away from the base, of the piston. When a train derails, the train collides with the anti-collision barrel body due to kinetic energy and extrudes the anti-collision barrel body to deform the anti-collision barrel body, the connecting spring is extruded and contracted, so that the kinetic energy of the train is absorbed, meanwhile, the rod body drives the piston to slide in the working cylinder barrel, and hydraulic oil enters the oil storage cylinder barrel under the action of pressure, so that the anti-collision barrel body derails. And in the moving process of the hydraulic oil, the hydraulic oil is throttled through the piston and the valve on the base, so that damping is achieved, and the anti-collision effect is improved.

The utility model relates to the technical field of cushion protective covers, in particular to an electric vehicle cushion protective cover which comprises a cover body, a rotating assembly and a fastening assembly, the rotating assembly comprises two parts capable of rotating relatively, and the two parts capable of rotating relatively are arranged on the fastening assembly in a limited mode and fixed to the two ends of the cover body respectively. The fastening assembly comprises a fixing piece and a fixing column, an annular groove is formed in the fixing piece, and the first end of the fixing column extends outwards in the radial direction of the fixing column and is limited in the annular groove of the fixing piece. The fixing piece and the nut are arranged at the two ends of the fixing column correspondingly, limiting of the first rotating piece and the second rotating piece is achieved, and when the first rotating piece and the second rotating piece rotate to the supporting framework, the limiting sleeve and the supporting framework are pushed to continue rotating, so that damping in the rotating process is achieved, and the protective cover is prevented from being lifted to lose protection.

The present invention provides a valve actuator. One side of the valve actuator of the present specification includes: a housing; a motor configured in the housing; a drive gear combined to a motor shaft of the motor; a transmission gear externally tangent to the drive gear, which rotates according to a predetermined gear ratio when the drive gear rotates; an output gear combined to an output shaft and externally tangent to the transmission gear; and a stopper configured in the housing to limit the rotational radius of the output gear. The transmission gear includes: an outer side portion; an inner side portion configured inside the outer side portion; a first magnet configured in the outer side portion; and a second magnet configured in the inner side portion and opposite the first magnet. Thus, gear damage caused by excessive torque can be prevented, and gear damage caused when the output gear contacts the stopper can be prevented.

The utility model discloses a damping bowl set which comprises an inner ball plug and a steel ball bowl arranged outside the inner ball plug in a sleeved mode, a gap is formed between the steel ball bowl and the inner ball plug, and a damping piece is arranged at the position, close to the bottom, of the gap between the steel ball bowl and the inner ball plug. A steel ball is arranged in a gap between the steel ball bowl and the inner ball plug and close to the top; the damping device has the advantages that through the steel ball bowl, the inner ball plug, the damping piece and the steel ball, when the inner ball plug rotates, due to the fact that the inner ball plug is attached to the damping piece, the inner ball plug slides on the damping piece, the vibration reduction and damping effects are achieved, in other words, after the inner ball plug is pushed, the inner ball plug can move upwards, and therefore the damping effect is achieved. The steel ball bowl and the inner ball plug generate mutual pushing force, so that the inner ball plug is tightly attached to the damping piece, meanwhile, the inner ball plug is attached to the steel ball to rotate, the clamping condition is avoided, and the vibration reduction and damping effects can be achieved.