5results about How to "Curb rebound" patented technology

The utility model relates to the technical field of precast beam supporting, and discloses a precast beam supporting and positioning auxiliary device which comprises supporting beam columns, an adjusting and positioning base portion and a precast beam buffering supporting portion, and a precast beam is fixedly installed between the supporting beam columns. And the adjusting and positioning base part is arranged between the supporting beam columns. The impact force generated in the placing process of the precast beam and the influence caused by external vibration can be effectively buffered through the combination of the buffer springs and the damping telescopic rods, and when the precast beam falls or is vibrated, the buffer springs absorb part of energy through elastic deformation of the buffer springs; the damping telescopic rod further restrains rebound of the spring, the duration and amplitude of vibration are reduced, the precast beam is protected against damage, and the electric telescopic rod can adjust the height of the supporting cushion block according to actual needs so as to adapt to the height requirements of different precast beams and adjustment in construction.

An insulating pull rod for reducing bounce of a vacuum circuit breaker contact comprises an insulating body, a first metal sleeve and a second metal sleeve are embedded in the two ends of the insulating body respectively, the first metal sleeve is filled with damping particles, the damping particles are packaged in the first metal sleeve through a first pressing ring, and the center of the first pressing ring is fixedly connected with a first connecting rod; a spring is sleeved with the second metal sleeve, a second connecting rod is installed in the second metal sleeve in a pressed mode through a second pressing ring, the upper portion of the second connecting rod abuts against the top of the spring, and the lower portion of the second connecting rod extends into an inner cavity of the spring. According to the utility model, the damping particles filled at the lower end of the insulating pull rod absorb and disperse the bounce at the moment of contact of the moving contact, and rebounding of the moving contact is inhibited, thereby reducing bounce of the contact of the vacuum circuit breaker.

This utility model relates to the field of automotive bumper impact testing technology, and more particularly to an impact testing device for automotive bumper production. It includes a worktable and an impact head. The worktable contains a rotatable polygonal impact testing platform, a protective cover, and a lifting control mechanism. The protective cover is fixedly connected to the upper end of the worktable. Vertical guide rails are symmetrically arranged on the inner walls of both sides of the protective cover. Guide sliders are slidably connected within the guide rails, and a top plate is fixedly connected between the two guide sliders. A U-shaped frame is fixedly connected to the lifting control mechanism's front lifting section, and a support plate is rotatably connected within the U-shaped frame. An electromagnet is fixedly connected to the inner wall of the rear side of the protective cover, and a magnetic block magnetically connected to the electromagnet is installed at the rear end of the top plate. This utility model achieves a "multi-purpose" function by using different sized fixtures installed on each side, while effectively suppressing the rebound of the impact head. The combined use of the electromagnet and the magnetic block makes the fixation of the impact head more reliable.

The utility model provides a car stopping device for preventing a car from sliding down in an inclined roadway, which belongs to the technical field of car stopping devices and comprises a car stopping beam, an air control box, an air cylinder, an air path system and an elastic buffer structure. The air control box is connected with the air cylinder through the air path system and used for controlling the air cylinder to act, and the air cylinder is connected with the car stopping beam and drives the car stopping beam to ascend and descend. The elastic buffering structure is installed on the surface of the side, facing the coming direction of the inclined drift sliding car, of the car stopping beam, a manual operation valve is arranged on the air control box and used for manually controlling connection and disconnection of the air path system so as to drive the air cylinder to act, the elastic buffering structure comprises a plurality of elastic buffering blocks and a spring, one end of the spring is fixedly connected with the car stopping beam, and the other end of the spring is fixedly connected with the air control box. A plurality of installation grooves are formed in the surface of the side, facing the coming direction of the inclined drift sliding-down car, of the car stopping beam, the problems that a traditional inclined drift sliding-down preventing car stopping device is prone to driving faults, and the structure lacks buffering are solved, and the reliability of the car stopping device is improved.

The utility model relates to the technical field of shock absorber, especially a high stability shock absorber for vehicle, solves the shortcoming that the shock absorber exists in prior art, including upper lifting ring, upper shell body is fixedly connected with one side of upper lifting ring, the lower shell body is slidably connected in the upper shell body, the lower shell body one side is provided with lower lifting ring, the lower shell body one side is provided with end cover and makes its inside complete sealing, the lower shell body is provided with floating piston, oil tank is arranged between floating piston and end cover, the other side of floating piston is provided with gas chamber, the upper shell body one side is fixedly connected with piston rod, the piston rod one end is provided with working piston, working piston is slidably connected with oil tank inside, the utility model discloses, has practicality is strong and the characteristics such as good shock attenuation effect.