Cylinder type hydraulic shock absorber with high-pressure air bag

Abstract

The invention discloses a cylinder type hydraulic shock absorber with a high-pressure air bag. The cylinder type hydraulic shock absorber comprises a working cylinder body, a first piston rod, an inner piston and a first valve set. The working cylinder body comprises an inner cylinder body and a middle cylinder body arranged outside the inner cylinder body in a sleeving manner. An inner piston is installed at the end of the first piston rod, and the side wall of the inner piston abuts against the inner wall of the inner cylinder body. An oil storage cavity is formed between the middle cylinder body and the inner cylinder body, and the oil storage cavity and a first working cylinder are filled with oil. An annular supporting piece is arranged in the oil storage cavity, a first air bag of an annular structure is arranged at the lower end of the annular supporting piece, and the inner cylinder body is sleeved with the first air bag. The inner piston is provided with a first circulation valve and a first rebound valve which are used for communicating an upper cavity of the first working cylinder with a lower cavity of the first working cylinder. The bottom of the inner cylinder body is provided with a first compression valve and a first compensation valve which are used for communicating the first working cylinder with the lower cavity of the oil storage cavity. The problem that when an existing shock absorber is compressed, vacuum is generated in the space below a piston, and the shock absorption effect is affected is solved.

Description

technical field [0001] The application belongs to the technical field of shock absorbers, and in particular relates to a cylindrical hydraulic shock absorber with a high-pressure air bag. Background technique [0002] The shock absorber is used to suppress the shock when the spring rebounds after absorbing the shock and the impact from the road surface. It is widely used in automobiles to accelerate the attenuation of frame and body vibrations and improve the ride comfort of automobiles. When passing through uneven roads, although the shock-absorbing spring can filter the vibration of the road surface, the spring itself will reciprocate, and the shock absorber is used to suppress this spring jumping. In the suspension system, the vibration is generated due to the impact of the elastic element. In order to improve the ride comfort of the car, a shock absorber is installed in parallel with the elastic element in the suspension. In order to attenuate the vibration, the shock a...

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Problems solved by technology

[0003] The embodiment of the present application provides a cylinder-type hydraulic shock absorber with a high-pressure air bag, which solves the problem that the space under the piston generates a vacuum when the existing shock absorber is compressed, which affects the shock absorption effect

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