The role of the automobile pull rod is to prevent the torsion of the rod body. The following is the relevant introduction of automobile tie rods: 1. Classification: steering tie rods are divided into straight steering tie rods and tie rods. The steering straight rod undertakes the task of transferring the movement of the steering rocker arm to the steering knuckle arm; The steering tie rod is the bottom of the steering trapezoid mechanism, and is the key component to ensure the right and left steering wheels have the correct movement relationship. 2. Composition: The automobile steering rod is mainly composed of: ball joint assembly, nut, pull rod assembly, left telescopic rubber sleeve, right telescopic rubber sleeve, self tightening spring, etc. It plays the role of transmitting motion in the steering system, and directly affects the stability of vehicle handling, the safety of operation and the service life of tires.