Leaf spring and central bollt are mainly used to connect the wheels to the frame as shock absorbers for automotive suspension systems
Leaf spring is widely used in semi trailer because of the advantages of simple structure and low cost
Leaf spring is the most traditional elastic element in semi trailer suspension system. Leaf spring is widely used because of the good reliability, simple structure, short manufacturing process, low cost and greatly simplified structure. The semi trailer leaf spring is generally composed of several alloy spring steels of unequal length which are approximately equal strength spring beams. In addition to play a buffering role in the suspension system, at the same time using this structure is no need to install shock absorber.