laminated leaf spring

The role of the leaf spring is to connect the frame and the axle in the form of suspension, exposed between the frame and the axle, withstand the load impact of the wheel on the frame, reduce the violent vibration of the body, and maintain the smoothness of the vehicle and the adaptability to different road conditions. 1, multiple leaf springs: By a number of pieces of length, the same width of the steel sheet stacked together. The steel plates of multiple leaf springs are stacked into an inverted triangle shape, the longest steel plate at the top and the shortest steel plate at the bottom, the number of steel plates is related to the weight of the supporting bus, the thicker and shorter the steel plate, the greater the rigidity of the spring. However, when the leaf spring is used for a long time, the pieces will slide and friction each other to produce noise. The relative friction between the steel plates will also cause the spring deformation, resulting in uneven driving. ​2, less leaf spring: by the two ends of the thin middle thick, equal width and length of the steel sheet superimposed. The steel plate section of the small leaf spring changes greatly, from the same stiffness (that is, the same carrying capacity), the small leaf spring is about 50% lighter than the multi-leaf spring, reducing fuel consumption and increasing ride comfort. Moreover, there is a point contact between the spring pieces, which reduces the relative friction and vibration, and increases the ride comfort.