Automobile hydraulic transmission damping shock absorber

By using a hydraulically driven damping shock absorber to transmit wheel vibrations to hydraulic oil, and combining this with a sensor to adjust the oil chamber pressure and gas volume ratio, the problem of large size and easy damage of air spring shock absorbers is solved, achieving efficient vibration reduction and low-cost maintenance in small vehicles.

CN121876111APending Publication Date: 2026-04-17王蔚瑾
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Patent Information

Application Number
CN202311381087.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2023-10-24
Publication Date
2026-04-17

AI Technical Summary

Technical Problem

Existing automotive shock absorbers, such as metal spring shock absorbers, have poor damping performance, while air spring shock absorbers, although effective, are bulky and difficult to install on small vehicles. Furthermore, the air springs are prone to damage and require complete replacement, and external gas shock absorbers suffer from delay issues.

Method used

The hydraulic transmission damping shock absorber transmits wheel vibration to hydraulic oil in the oil chamber through the hydraulic cylinder piston. The vibration is then transmitted to external devices such as air cylinders, air bags, and springs via high-pressure oil pipes. The hydraulic oil and gas pressure are used for damping and vibration reduction. The pressure in the oil chamber and the gas volume ratio are adjusted by sensors to adapt to the load and road conditions.

Benefits of technology

It achieves efficient vibration reduction on small vehicles, the airbag wear parts are replaceable, the maintenance cost is low, the air cylinder can be flexibly installed, and the vibration reduction effect is good and the passability is excellent.

✦ Generated by Eureka AI based on patent content.
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Abstract

According to the automobile hydraulic transmission damping shock absorber, vibration of wheels and an automobile body is transmitted to hydraulic oil in an oil cavity through a hydraulic cylinder piston and then transmitted to an external gas cylinder, a high-pressure valve, a pressure release valve, a damping valve and other shock absorption devices through the hydraulic oil for damping shock absorption, and through damping shock absorption of various shock absorption devices and optimization of a computer, the shock absorption effect of the automobile is improved. The damping effect better than that of an air spring damper can be provided. Only the hydraulic cylinder and the gas cylinder which are in butt joint with the vehicle body can be installed at any position of the vehicle frame, the oil bag serving as a quick-wear device can be installed in the steel cylinder and is well protected, the oil bag is easy to replace, only the oil bag in the whole set of equipment is a consumption device, the maintenance cost is low, the gas cylinder can be installed in a large space, and the large gas cylinder can obtain better vibration reduction performance. If a high-pressure oil pump and a valve are adopted to reduce vibration by feeding and discharging hydraulic oil, a small-size gas cylinder can be used or even is not used, so that the device is more suitable for small-space installation of the trolley.
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