What is a leaf spring on a truck body

Leaf Spring Leaf Spring is one of the most widely used elastic components in automobile suspension, it is composed of several equal width but not equal length (thickness can be equal or not equal) alloy spring combination of an approximately equal strength of the elastic beam

When the leaf spring is installed in the automobile suspension, when the vertical load is positive, each leaf of the spring is deformed by force, and has the tendency to arch upward. At this point, the bridge and frame will be close to each other. When the axle and the frame are far away from each other, the leaf spring receives the positive vertical load and the deformation then reduces gradually, sometimes even the reverse direction

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