Heavy Duty Parts of Multi-Piece Mechanical Leaf Spring Trailer Mechanical Suspension

Introduction

Automobile leaf spring is the most traditional elastic element in automobile suspension system. It is widely used due to its advantages of good reliability, simple structure, short manufacturing process, low cost and greatly simplified structure. Automobile leaf springs are generally composed of several pieces of alloy spring steel with unequal lengths to form a set of spring beams that are similar to equal-strength spring beams. In addition to buffering in the suspension system, when it is placed in the longitudinal direction of the car and one end is connected with the frame as a fixed hinge, it can be used to transmit all forces and moments in all directions, as well as determine the trajectory of the wheel movement. It plays a guiding role, so there is no need to set up other guiding mechanisms. In addition, the automobile leaf spring is made up of multiple pieces. When deformed under the action of the load, each piece will slide relative to each other and generate friction, which will generate a certain resistance and promote the body. The vibration is attenuated, so this structure can be used without a shock absorber.

Basic Features

The main function of the automobile leaf spring is to act as the elastic element of the automobile suspension system. In addition, the friction between the sheets of the multi-leaf spring also acts as the damping effect of the system. Most of the automobile leaf springs have both guiding functions through the roll ears and the support. However, in terms of its basic stress conditions and structural characteristics, automotive leaf springs have the following two basic characteristics:

1. No matter what form the car leaf spring is installed on the car, it works in the form of a beam, that is to say, its main force direction is perpendicular to the length of the leaf spring. At the same time, since the deformation is relatively small relative to its length, the theory of small deflection beams in the mechanics of materials, that is, the linear principle, can be used for analysis and calculation.

2. The bending moment of the car leaf spring mounted on the car is basically a one-way load, so its bending stress is also a one-way stress.

General parameter table

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