A shock absorber with extended service life

Abstract

The invention discloses a shock absorber capable of prolonging the service life, relates to the field of car shock absorbers, and aims to solve the problem that a conventional shocker absorber capableof being limited is short in service life. According to the technical scheme, the key point is that the shock absorber comprises an oil storage barrel, a dustproof cover which covers one end of the oil storage barrel, a piston rod which is arranged on the end part of the oil storage barrel in a penetrating mode and is fixedly connected to the middle part of the dustproof cover, wherein one end, extending into the oil storage barrel, of the piston rod is connected with a piston; a guide assembly is fixedly arranged inside the end part, close to the dustproof cover, of the oil storage barrel; and one end, towards the piston, of the guide assembly is equipped with a hydraulic limiting assembly. According to the shock absorber capable of prolonging the service life disclosed by the invention,conventional hard collision is changed into hydraulic limiting; a nearly sealed cavity is formed between a locking ring and a guider, so that hydraulic limiting on the locking ring is realized by utilizing oil pressure in the cavity, and hard collision on the guider is reduced, and therefore, the service life of the shock absorber is effectively prolonged.

Description

technical field [0001] The invention relates to the technical field of shock absorbers, in particular to a shock absorber with extended service life. Background technique [0002] When the car passes through uneven roads, although the shock-absorbing spring in the shock absorber system can filter the vibration of the road surface, the spring itself will reciprocate, and the shock absorber is used to suppress the reciprocating jump of the spring. The structure of the shock absorber is that the piston rod with the piston is inserted into the barrel, the barrel is filled with oil, and the piston has an orifice, so that the oil in the two spaces separated by the piston can complement each other. [0003] The working principle of the shock absorber is that when there is relative movement between the frame and the axle or between the vehicle body and the axle, the piston in the shock absorber moves up and down, and the oil in the shock absorber cavity passes through one cavity rep...

AI Technical Summary

Problems solved by technology

[0004] In order to realize the limit of the piston rod in the existing shock absorbers, there are usually two forms. One is to set a limit block on the piston rod. Most of the vehicle shock absorber limit blocks are cylindrical rubber parts. It is a simple straight wall state, so if the hardness is set too high, there will be a sharp collision noise when hitting the limit, if the hardness is set too low, the displacement will be too large when the limit is reached, and the limit block of the shock absorber will be very large. It is easy to break at the straight wall of the waist; the other is to realize the limit through the hard collision between the piston and the guide, which will cause great damage to the guide and reduce the service life of the guide

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