The importance of trailer suspension system

Suspension system is the key component connecting chassis and frame. The supporting force, braking force and driving force of vehicle are transmitted through suspension system. It can also reduce the impact of bad road on vehicle and ensure the stability of vehicle. Its importance is obvious. Suspension system is generally divided into independent suspension and non independent suspension. For semi-trailer, non independent suspension is selected because of the need for strong bearing capacity. There are four common suspension systems for semi-trailer. 

The outstanding feature of air suspension is its air spring with air bag. The air spring has light weight, less friction of air medium in the air bag, basically no noise when working, and its service life is 2-3 times that of leaf spring. However, when air spring is selected, it is necessary to set bar system which can transfer all kinds of forces and moments other than vertical force, so the structure of suspension system is complex; In addition, the air spring has strict requirements for sealing, and its cost is also high. www.chinaaxle.cn