1. The closed box body has light weight and strong rigidity, and the leaf spring will not move laterally.
2. The wear-resistant block of the balance arm has grease lubrication nozzle, which reduces the sliding friction between the leaf spring and the wear-resistant block of the balance arm.
3. The torsion bar angle design of the suspension is reasonable. In the dustpan process of the vehicle running frequently, the sudden friction slip distance between the tire and the ground is reduced, the friction of the tire is reduced, and the service life of the tire is extended.
4. The torque rod bushing (damping sleeve) is made of polyurethane rubber, which combines rigidity and flexibility, and has buffering effect on the sudden sliding friction of tire.
