The total suspension consists of elastic elements, guiding mechanism, shock absorber and stabilizer bar. The elastic element is used to bear and transmit vertical load and reduce the impact of uneven road surface on the car body. The types of elastic elements include leaf spring, spiral spring, torsion bar spring, oil-gas spring, air spring and rubber spring. Shock absorber is used to attenuate the vibration caused by elastic system. The types of shock absorbers include cylindrical shock absorbers, new shock absorbers with adjustable resistance and inflatable shock absorbers. The guiding mechanism is used to transfer the force and moment between the wheel and the car body, so that the wheel can jump relative to the car body according to a certain motion trajectory. The guiding mechanism is generally composed of a lever that controls the swing arm.
There are single-link or multi-link types. When the leaf spring is used as an elastic element, there is no need to set another guiding mechanism, and it also plays a guiding role. In some cars and buses, in order to prevent the body from tilting excessively under steering and other conditions, a stabilizer bar is added to the suspension system to improve the lateral stiffness, make the steering characteristics of the vehicle insufficient, and improve the handling stability and ride comfort of the vehicle. The lower swing arm is one of the swing arms on the vehicle, which is mainly used to support the vehicle body and shock absorber and buffer the vibration during driving.
The shock absorber plays a good auxiliary role in the lower suspension. Its tacit cooperation with shock absorber and spring can form a complete suspension system. The lower arm is responsible for supporting the weight and steering. The lower arm is provided with a rubber sleeve, which plays a fixing role and is connected with the shock absorber. If the rubber sleeve rots, it will make abnormal noise when walking, the vibration reduction effect will become worse and the steering will be heavy. In severe cases, the rocker arm will break and the vehicle will lose control, resulting in an accident. Automobile swing arm is the guide and support of suspension. Its deformation will affect the wheel alignment and reduce the driving stability. If there is something wrong with the front swing arm, I feel that the steering wheel will shake, and it is easy to deviate after releasing the steering wheel, and it is difficult to grasp the direction at high speed. If the above phenomenon is not obvious, there is no need to replace it, only four-wheel alignment is needed to stabilize the direction.
Automobile control arm is the connecting mechanism between frame and wheel. The frame and wheels of a bicycle are hard connected. It will bump when crossing the rugged road, which makes people very uncomfortable. The swing arm of the car is made into a soft connection, and a damping mechanism is added. We won't feel too uncomfortable sitting in the car on the bumpy road. At the same time, the handling stability of the car is much better.
