Axle, also known as axle, is connected with the frame (or load-bearing body) through suspension, and wheels are installed at both ends. Its function is to transmit forces and moments in all directions between the frame (or carrier) and the wheel. According to the function of wheels on the axle, the axle can be divided into drive shaft, steering shaft, steering drive shaft and support shaft, among which the steering shaft and support shaft belong to driven shaft.

Usually only trucks say that. A two-axle automobile is a kind of automobile with only one drive shaft and one steering wheel.

Four-axle vehicle has two rows of wheels at the back and two rows of wheels at the front. When you hit the direction, the four wheels in front turn at the same time. Four-axle car is a single machine with double drive axle and two wheels or a semi-trailer with single drive and one-way wheel and two axles.

design

The drive axle is located at the end of the power train, and its basic function is to increase the torque transmitted by the drive shaft or transmission and distribute the power to the left and right drive wheels reasonably. In addition, it also bears the vertical force, longitudinal force and lateral force acting between the road surface and the frame or body. Drive axle is generally composed of main reducer, differential, wheel drive and drive axle housing.

function

An automobile drive axle wheel set comprises a wheel side reducer, a brake assembly, a wheel hub assembly, a steering knuckle, a supporting shaft assembly, a wheel hub transmission shaft, an upper swing arm coupling assembly and a lower swing arm coupling assembly, wherein the supporting shaft is always a hollow shaft, and the wheel hub transmission shaft passes through the supporting shaft assembly and is connected to the wheel hub reducer, and the wheel hub assembly is installed on the supporting shaft assembly.

The above contents refer to Baidu Encyclopedia-Automobile Drive Axle.