Detachable double-cylinder type hydraulic buffer

Abstract

The invention provides a detachable double-cylinder type hydraulic buffer. The detachable double-cylinder type hydraulic buffer comprises an air bag assembly, a piston assembly, an inner cylinder and outer cylinder assembly and a damping adjustment valve; the air bag assembly comprises an air cylinder head, an air bag, an air cylinder barrel and an air cylinder head end cover; the piston assembly comprises a piston rod, a piston head buffering assembly, a piston head and a spring assembly; the inner cylinder and outer cylinder assembly comprises an inner cylinder, an outer cylinder, an inner cylinder upper end cover and an inner cylinder lower end cover; the air cylinder head is in rigid connection with the piston rod and is in flexible transition connection with an air cylinder through the air bag; the outer cylinder is connected to the air cylinder, the inner cylinder and the damping adjustment valve, and detachable parts such as hoops and clamping rings are designed at the joints for realizing rigid connection; mutual location and connection of parts are guaranteed through standard components such as buckles and check rings, use of special parts is reduced, the manufacturing cost is greatly reduced, and the design cycle is greatly shortened; disassembly is easy, replacement of parts inside the buffer is convenient, replacement of the whole buffer is avoided, and the maintenance cost is greatly lowered.

Description

technical field [0001] The invention belongs to the research field of hydraulic shock absorbers for automobiles, in particular to a detachable double-tube hydraulic shock absorber. Background technique [0002] The shock absorber is a part of the automobile suspension control system and is the force transmission connection device between the automobile frame and the axle. The automobile shock absorber is actually a vibration damper, which is used to speed up the vibration attenuation rate caused by uneven ground, limit the vibration frequency and intensity of the body and wheels, and achieve the comfort, operability and stability of the vehicle. and security control. [0003] For now, the mainstream hydraulic shock absorbers on the market are divided into single-tube and double-tube structures. Regardless of the structure, in order to prevent leakage or obtain a smaller size, the inner tube, outer tube, The joints of control valves or cylinder covers are almost uniformly m...

AI Technical Summary

Problems solved by technology

[0003] For now, the mainstream hydraulic shock absorbers on the market are divided into single-tube and double-tube structures. Regardless of the structure, in order to prevent leakage or obtain a smaller size, the inner tube, outer tube, The joints of control valves or cylinder covers are almost uniformly manufactured by welding or spinning. The Chinese patent application number CN1104574A proposes a welding method for automobile shock absorbers, and details the problems that occur during welding or spinning. Such as processing defects such as deformation, the Chinese patent application number CN200982371Y proposes a hydraulic shock absorber without welding, which mainly solves the problem of poor concentricity inside the piston cylinder caused by welding, but there is still a gap between the inner cylinder and the outer cylinder. The processing method of welding or spinning closing

This brings inconvenience to the replacement, cleaning and maintenance of parts in the future. If some parts inside the shock absorber are damaged, the entire shock absorber must be replaced, which causes a waste of resources and virtually increases the cost of the customer. Maintenance costs

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