In the suspension system, the elastic element is shocked to produce vibration. In order to improve the smoothness of the car, a shock absorber is installed in parallel with the elastic element in the suspension to attenuate the vibration. The shock absorber used in the automobile suspension system is mostly hydraulic shock absorber. The working principle of the shock absorber is that when relative movement occurs between the frame (or body) and the axle, the piston in the shock absorber moves up and down, and the oil in the shock absorber cavity repeatedly passes through different chambers. The pore flows into another cavity. At this time, the friction between the hole wall and the oil and the internal friction between the oil molecules form a damping force on the vibration, so that the vehicle vibration energy is converted into oil heat, which is then absorbed by the shock absorber and emitted into the atmosphere. When the oil channel cross-section and other factors remain unchanged, the damping force increases or decreases with the relative movement speed between the frame and the axle (or wheel), and is related to the oil viscosity.
The shock absorber and the elastic element undertake the task of buffering and damping shock. If the damping force is too large, the elasticity of the suspension will be deteriorated, and even the shock absorber connector will be damaged. Therefore, it is necessary to adjust the contradiction between the elastic element and the shock absorber.
(1) In the compression stroke (the axle and the frame are close to each other), the damping force of the shock absorber is small, so as to give full play to the elastic effect of the elastic element and alleviate the impact. At this time, the elastic element plays a major role.
(2) During the extension stroke of the suspension (the axle and the frame are far away from each other), the damping force of the shock absorber should be large and the shock can be quickly absorbed.
(3) When the relative speed between the axle (or wheel) and the axle is too large, the shock absorber is required to automatically increase the fluid flow, so that the damping force is always kept within a certain limit to avoid excessive impact Load.

Zhejiang Yongmei Technology Co., Ltd locates in Huangyan District, Taizhou City, the central part of Zhejiang Province, and the birthplace of the national private economy. as a famous China Inverted shock absorption Series manufacturer and Inverted shock absorption Series factory, our company is a high-tech company integrating research, development, design, manufacture, sales and service of shock absorbers used for yachts, water sports equipment, motorcycles, ATVs and electric vehicles. The company regards continuous innovation as its core competitiveness and regards product quality as the life of the company, all management work according to the ISO9001-2015 standard, we offer kinds of high-quality wholesale Inverted shock absorption Series for our customers. Now it has perfect production technology facilities, strong technical development strength and advanced technical design methods. The company has won the honors of Intellectual Property Consultant Unit, City-level High-tech Research Center, Taizhou High-tech Enterprise, Zhejiang Science and Technology SMEs, Quality Service Credit AAA Unit, National Consumer Satisfaction Brands, Product Service Credit AAA Unit. The company's Qili brand shock absorber products have more than 200 national patents which were awarded China Famous Brand and China Famous Brand.