Barrel shock absorber

Abstract

The invention discloses a telescopic shock absorber. The telescopic shock absorber comprises a sleeve and a piston rod. A piston and a cushion valve are arranged at one end of the piston rod, and the other end of the piston rod is connected with an installation base. The cushion valve comprises a pedestal, a valve base, an elastic part and a valve plate. The valve base is connected with the pedestal. The elastic part and the valve plate are installed between the pedestal and the valve base. The valve base is provided with a circulation hole. The elastic part squeezes the valve plate so that the valve plate can be in seal fit with the circulation hole. The elastic part is an annular elastic sheet. The annular elastic sheet is provided with claw plates distributed at intervals. The claw plates make contact with the valve plate. The piston rod comprises a rod body and an insertion rod. The rod body is provided with a central blind hole. The bottom of the central blind hole is connected with a threaded hole. The insertion rod is inserted in the central blind hole and is in locating fit with the central blind hole through threaded connection. The insertion rod and the rod body are fixed through welding. The telescopic shock absorber has the advantages of being firm in structure, good in sealing effect, high in concentricity, safe and reliable.

Description

technical field [0001] The invention relates to the technical field of shock absorbers, in particular to a cylindrical shock absorber. Background technique [0002] When the vehicle is running in bumps, the piston rod in the shock absorber is constantly doing telescopic movement in the cylinder body, and the shock absorber oil in the cylinder body continuously flows back and forth to buffer the impact force, slow down the turbulence and play a shock absorbing role, increasing the driving safety of the vehicle. smoothness. [0003] The cylinder shock absorber usually includes a cylinder with a hydraulic chamber and a piston rod. One end of the piston rod is connected to the mounting seat, and the other end of the piston rod extends into the cylinder and is sleeved with a piston assembly. The piston assembly includes a piston. There is a buffer valve, the buffer valve includes a valve seat, a base, a valve plate and a spring, the base is installed on the valve seat, the valve...

AI Technical Summary

Problems solved by technology

[0006] In the above structure, the elastic member is a sheet-like structure, and the annular elastic piece is provided with a boss, and the end of the boss is in contact with the base, and a space for deformation of the claw piece is formed between the base and the annular elastic piece, and the claw piece is arranged in a curved structure. The bending direction of the claw piece is opposite to that of the boss, and the claw piece bends toward the valve seat. The valve seat, valve piece, annular shrapnel and base are all sleeved on the end of the piston rod, and the flow holes are respectively set in the valve seat installation hole. On both sides of the ring shrapnel, the free ends of the claws of the annular shrapnel abut against the valve plate to form a sealed fit between the valve plate and the flow hole; the above-mentioned insertion rod is inserted into the central blind hole of the rod body to form a preliminary center correspondence with the rod body, and then threaded. After positioning, the welding operation is carried out to ensure that the concentricity of the connection between the two is not affected by the welding process, improve its structural stability, and overcome the problem of fatigue fracture failure of the piston rod due to low concentricity

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