Vehicle air suspension shock absorber

Abstract

The invention discloses an automobile air suspension damping device. The automobile air suspension damping device is composed of a piston suspension damping device, a boosting bearing piston device and a gas supply device. The piston suspension damping device is composed of a piston rod, a piston and a piston cylinder; the boosting bearing piston device comprises a boosting piston cylinder and a boosting piston, and the gas supply device comprises a gas inlet pipe, a gas outlet pipe, a gas pump and a gas storage cylinder, the gas inlet pipe and the gas outlet pipe are all communicated with the gas pump and the gas storage cylinder, and the gas pump is communicated with the gas storage cylinder. For an air suspension in the invention, a piston structure is adopted and is boosted through the secondary boosting and the bearing piston, liquid-gas pressure conversion is adopted to greatly reduce the damping area of the air suspension, accordingly, the lifting amplitude is random and controllable, the work is stable, and higher work pressure can be obtained by only using lower support original pressure, and thus the real full air suspension is realized, the wide spread and mounting of the air suspension is realized, and the stationarity and comfortableness of the driving automobile can be obviously improved. The automobile air suspension damping device has a simple structure and lower cost.

Description

technical field [0001] The invention belongs to a vehicle suspension, in particular to a vehicle air suspension damping device provided with a piston cylinder. Background technique [0002] The function of the vehicle suspension shock absorber is to reduce the vibration caused by poor road conditions, and at the same time reduce the shaking of the vehicle body when the vehicle makes a sharp turn or brakes suddenly. The air suspension shock absorber has the advantages of low stiffness, non-linear stiffness, adjustable air suspension height, light weight, and low noise. It is more and more widely used in various vehicles, especially high-end buses and precision trucks. At the same time, the application of air suspension in luxury off-road vehicles is also increasing rapidly, and some cars have gradually begun to install air suspension. shelf. In some special vehicles, such as instrument vehicles with high requirements for shock resistance, ambulances, special military vehicl...

AI Technical Summary

Problems solved by technology

Due to the large size of the airbag spring, it is very difficult to arrange it on cars and mini cars, especially in the arrangement of non-independent suspensions, it is impossible to ensure that the air springs on both sides have a large center distance, so that the lateral angular stiffness of the suspension is relatively low. It is small and must be equipped with a lateral stabilizer; the airbag spring is too large to be installed and applied on cars and mini cars, and it is necessary to carry out a comprehensive corresponding design for the frame, so it is unfavorable and widely popularized

[0004] 2. Narrow application range

Because the source pressure provided by the vehicle is limited, generally (<0.85MPa), the air suspension must have a larger airbag size, coupled with the limitation of the load capacity of the airbag spring, as the load increases, the size of the airbag spring will also increase. , so it is generally difficult to promote the application on trucks or oversized transport vehicles

[0005] 3. High risk

The airbag spring is determined by the rubber material. Once it is corroded, aged or damaged by overpressure, the vehicle will completely lose its shock absorption performance and be in danger.

[0006] 4. Complex structure

Due to the limitations of the material structure of the airbag spring, it is impossible to design a large adjustment in the lifting range, so the design of the lifting adjustment of the vehicle is greatly restricted.

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