What is an axle and how are the axles of a car divided?

Automobile axles (also known as axles) are connected to the frame (or load-bearing body) by a suspension, and wheels are mounted at both ends. Purpose: It is the suspension, not the axle, that transmits the force and moment between the frame and the axle (wheels).

The role of the axle is to bear the load of the car and maintain the normal driving of the car on the road.

The axle is divided into the front axle and the rear axle, which are the two things that support the four wheels. In the case of rear-wheel drive, there are two half-axles in the rear axle.

1.The axle can be monolithic, like a giant barbell, with both ends supporting the body through a suspension system, so the monolithic axle is usually mated with a non-independent suspension; The axle can also be disconnected, like two umbrellas inserted on both sides of the body, and then each of them supports the body through the suspension system, so the disconnected axle is used with independent suspension.

2.Depending on the drive mode, axles are also divided into four types: steering axles, drive axles, steering drive axles, and support axles. Among them, the steering axle and the support axle belong to the driven axle.

Most cars have front-rear drive (FR), so the front axle acts as a steering axle and the rear axle as a drive axle; In front-drive (FF) cars, the front axle becomes the steering axle and the rear axle acts as a support axle.

3.The structure of the steering axle is essentially the same, consisting of two steering knuckles and a beam. If the beam is compared to the body, the steering knuckle is his head swaying from side to side, the neck is what we often call the kingpin, and the wheels are mounted on the knuckle, as if he has a straw hat on his head.

However, when driving, the straw hat turns, but the head does not turn, and the middle is separated by a bearing, and the head only shakes from side to side. Neck - The kingpin is the axis of rotation of the wheel, the axis of this axis is not perpendicular to the ground, and the wheel itself is not vertical, which we will discuss in the section on wheel alignment.

The bridge is all-round, and the small bridge is local. What brand of Youqing's tractor bridge and Xiao Qiao are not the same, the so-called bridge and small bridge only exist in the small and medium-sized tractor below 60 horsepower, high-horsepower tractors do not have a large bridge and a small bridge, but the model is different, the configuration is different! There is a difference between a tractor bridge and a small bridge.

Distinguish the fibers by the letters of the identification; ** Aspect distinction; Dimensionally distinctive; Distinguish by experience.

An axle is a bridge structure that is connected to a frame (or load-bearing body) by a suspension and the wheels are installed at both ends, also known as an axle. The axle can play a role in bearing the load of the car and enabling the car to drive normally on the road.

Depending on the drive mode, axles are divided into four types: steering axles, drive axles, steering drive axles, and support axles. The steering axle and the support axle are driven axles.

The function of the steering axle is to disturb the steering of the vehicle with real cracks, and the function of the driving axle is to transmit the speed and torque of the transmission to the driving wheel, and the steering drive axle undertakes the task of steering and transmitting power at the same time, and the support axle does not undertake the task of steering nor the task of transmitting power.

Axles are prone to deformation and breakage, so it is necessary to check whether there is a problem with the gap between the chassis connectors or buffers before driving, change the lubricating oil regularly, and tighten the various fasteners.

Axles can be classified according to different suspension structures and different drive modes. The specific classification is as follows: Suspension structure:

Depending on the suspension structure, the axle can be divided into integral and detached. When the non-independent chain mu suspension is adopted, the middle of the axle is a solid or aerial beam, which is an integral axle. The broken bridge is a union structure, which is matched to the independent suspension.

Driving mode: Depending on the drive mode, axles are also divided into steering axles, drive axles, steering drive axles, and support axles. Among them, the shed cavity forest circular state bridge and the support bridge belong to the driven bridge.

Most cars have front and rear drive (FR), so the front axle acts as the steering axle and the rear axle acts as the drive axle. The front axle of a front-wheel drive (FF) car becomes the steering drive axle and the rear axle acts as the support axle.

1.Steering axle 1) the function of the steering axle is generally the steering axle of the car, and its function is to use the articulation device to deflect the wheels installed at both ends at a certain angle to realize the steering of the car, and at the same time, also bear and transmit the partial load of the car and the force and torque generated by the car braking, wheel skidding, etc. 2) The composition of the steering axle varies.

2.Steering drive axle 1) The role of steering drive axle Steering drive axle has two functions to realize wheel steering and drive, and is generally used in engine front axle drive and all-wheel drive automobiles. 2）..

3.The integral swing axle of the rear axle with non-independent suspension is one of the widely used in sedans at present.

Recently, I often receive questions from friends about "What does the rear axle of the vehicle mean?" Now I will explain it to you. The rear axle of the automobile refers to the rear drive shaft component in the power transmission of the automobile, which is composed of two half-axles, which can realize the differential movement of the half-axle, and at the same time, it is also used to support the wheels and connect the wheel devices.

The role of the bridge: 1. If the front axle is not the drive axle, then the rear axle is the drive axle, at this time, in addition to the bearing effect, it also plays the role of driving and residual deceleration and differential speed, if it is four-wheel drive, it is generally equipped with a transfer case in front of the rear axle;

2. The front axle and the rear axle refer to the front and rear axles, the front axle includes shock absorber springs, steering gears, balance shafts, etc., and the rear axle also includes drive shafts, transmission gears, etc. The rear of the multi-axle truck is also divided into the driving rear axle and the non-driving rear axle, the non-driving rear axle is not connected by the transmission shaft, and does not belong to the part of the driving wheel, which is generally more than 3 axles of heavy trucks and tractor heads;

3. Classification of bridges: According to the different suspension of bridges, they are divided into integral and disconnected. The integral bridge is equipped with non-independent suspension, such as leaf spring suspension, and the disconnected type is equipped with independent suspension, such as MacPherson suspension;

4. As for the big drum in the center of the rear axle, it is only when the rear axle is the driving axle, because the reduction gear and differential mechanism should be placed inside, so there must be a big drum bag for rolling a big drum, and the rear axle is generally not followed by the axle. According to the different roles of the axle, the axle can be divided into drive side liquid axle, steering axle, support axle, and steering drive axle.

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