Additional air chamber of volume-variable air spring

Abstract

The invention discloses an additional air chamber of a volume-variable air spring and relates to an additional air chamber of the air spring for vehicle. The additional air chamber of the volume-variable air spring comprises an additional air chamber cavity, a connecting pipeline for connecting a main air chamber, a piston, a piston rod, a ventilating module, a key groove, a key, a cover plate, an elongated pipeline, and on the like. The additional air chamber can change the volume by controlling the reciprocating motion of the piston, so that the effective volume of the air spring in work is changed, the rigidity of an air spring system is further changed to adapt to various driving situations of vehicles and achieve the purpose of improving the comprehensive performance of a suspension system; as the driving force required during piston movement is small, the ventilating module is timely opened and closed to ensure the stability of the gas pressure at the inner part of the spring, reduce the impact generated in the working process of the spring and provide convenience for the use of the additional air chamber of the volume-variable air spring on the vehicle. The additional air chamber of the volume-variable air spring is simple in structure, low in requirement of producing technique, convenient to maintain and low in manufacturing cost.

Description

technical field [0001] The invention relates to an additional air chamber of a vehicle air spring, in particular to an air spring additional air chamber with variable volume. Background technique [0002] The air spring uses the compressibility of the gas to realize its elastic effect, and has the functions of cushioning and vibration isolation. The volume of the air spring has a significant impact on its stiffness characteristics. Zhu Sihong of Nanjing Agricultural University in China mentioned in his paper "Mechanical Characteristic Parameter Test of Air Spring with Additional Air Chamber" that as the volume of the additional air chamber of the air spring increases, The air spring stiffness becomes smaller. [0003] In order to adapt the air suspension to various complex working conditions of the vehicle, the stiffness characteristics of the spring can be changed by changing the volume of the air spring, so that the advantages of the air spring can be fully exerted and th...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the current situation that the volume of the additional air chamber of the existing air spring cannot be changed, or the height of the air spring is affected during the change process and the driving force for realizing the change of the additional air chamber is relatively large, the present invention provides an air spring with an adjustable volume that can overcome the above-mentioned shortcomings. The air chamber is added to the spring to improve the performance of the spring system through the change of the spring volume, so that the advantages of the air spring can be fully exerted, and the driving comfort and ride comfort of the vehicle can be improved under different working conditions when the vehicle is running.

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