Axle can be integrated, like a huge weight, both ends by suspension system to support the body, so integral axle usually cooperate with the independent suspension; Axle can also be broken open, like two umbrella in on both sides of the car body, and their respective through suspension system to support the body, so breaking axle with independent suspension.

Axle according to different driving mode, the axle is divided into drive axle, steering axle and steering bridge four axles and support. The steering axle and support bridge are driven bridge. Most cars driven by lead after (FR), therefore front axle as steering axle and rear axle as the drive axle; And before the front drive (FF) automobile front axle be turned to drive axle, axle bridge ACTS as a support.

Commonly used automobile axle and differential bearing list

To bridge structure is basically the same, is composed of two steering knuckle and a beam. If the beam to the body, steering knuckle is the head, he swung his neck is that we often say that the king pin, wheel is installed on the steering knuckle, like the head with a straw hat. However, when you drive, turn straw hat, head did not turn, middle separated with bearing, head just sway. Neck - king pin wheel rotation axis, the axis of the axis is not perpendicular to the ground, the wheels by itself is not vertical, there is a lesson in wheel alignment.

The difference between the steering drive axle and steering axle is everything is hollow, beam into a bridge shell, steering knuckle became a steering knuckle shell, because inside the root drive shaft. Because of this drive axle is located in the middle of the bridge shell differential in two, and turned into two half shaft. Two hat is not simply set on the head, with the inside of the two half shaft directly connected. Half shaft in the position of the "neck" also more than a joint, universal joint, so half shaft is also turned into two parts, inside outside half shaft and half shaft.

According to the structural type, suspension Bridges can be divided into broken open and integral type two kinds. Breaking axle for joint structure, it used with independent suspension; The centre of one-piece axle is rigid solid or hollow beam. It is more than independent suspension. According to the different movements of the wheels, can be divided into the drive axle, steering axle, steering axle drive axle and bearing bridge four types. Among them, steering axle and bearing bridge are driven bridge. General automobile front axle for more steering axle and rear axle or during and after more than two bridge for the drive axle; Cross-country car or most of the car's front axle is drive axle, steering axle is to drive axle is called; Some single bridge driven triaxial cars (6 x 2) tin (or rear axle) is the drive axle, the rear axle (or tin) are supporting the bridge.

To bridge

1) function by using the motion of the steering knuckle make wheel deflection certain Angle in order to realize auto steering; Between the wheel and frame under vertical load, longitudinal resistance of road, braking force and lateral force and the force formed by the moment.

2) key indicators due to the complex road conditions, axle needs to have certain stiffness and strength. The positioning of the steering wheel has the correct Angle and appropriate steering Angle. Quality and to minimize the steering wheel drive a frictional resistance

3) the front axle and steering knuckle, king pin and wheels, etc. Front axle: its cross section is commonly i-section, to improve the torsional strength, near both ends each have a bold part shape into boxing, including hole, king pin insert the hole, namely central bent into a concave down, its purpose is to reduce the engine position, so as to reduce vehicle mass center; Extension driver; Reduce the transmission shaft and the Angle between the transmission output shaft. Steering knuckle: is the hinge of the wheel steering, it is a fork. Two with two forks have installed king pin shaft hole, steering knuckle journal used to install the wheels. Steering knuckle ears by king pin and pin holes at the ends of the front axle boxing shaped part is linked together, so that the front wheel around the king pin and make the vehicle steering deflection Angle. King pin: action is hinged front axle and steering knuckle, makes the steering knuckle swing around the king pin so as to realize the steering wheel. King pin have groove in the middle of the cut, with king pin when installation bolt with groove on it, the king pin is fixed in front axle type hole punch. King pin and pin hole on the steering knuckle is moving to cooperate, in order to realize the steering wheel, wheel hub by two tapered roller bearings, outside the steering knuckle of the journal. The bearing looseness available adjusting nut (installed in bearing outer side).

Drive axle

1, the action of drive axle, the driving force from the engine to the drive wheels to realize speed down increase torsion effect, change the direction of power transmission at the same time. 2, axles composed of main reducer, differential and half shaft, axle housing. 3, drive axle installation position, the structure of FF and FR FF: the difference between a clutch, gearbox, main reducer, differential and drive axle components are installed in the transmission housing, is located in the front of the car, power passed to the front wheels. FR: the main reducer, differential and drive axle components installed in the drive axle casing, which, in the back of my car power transmitted to the rear wheels.

To drive axle

1. The function: with turning and driving two functions. Has both general drive axle of the basic components, but also has to bridge the unique king pin, etc.

2. To drive axle structure has both general drive axle of the main reducer, differential and half shaft; Also has the general steering axle, king pin, and the steering knuckle of shell hub, etc. It compared with the single drive axle, steering axle, the difference is that, due to need half shaft is divided into two sections, respectively called within half shaft (connected to differential) and half shaft (connected to the hub), both with a constant velocity universal joint together. At the same time, the king pin and therefore is divided into two segments, respectively fixed on the universal joint of the spherical bearing. Steering knuckle hollow shaft neck make it, so that the outer half shaft through it. Steering knuckle for the connecting fork steering knuckle ball shell, satisfy the need of the steering, and adapted to the steering knuckle of a force. To drive axle is widely applied to the all-wheel drive off-road vehicle

3. Turn the working process of the drive axle drive: in the middle of the bridge equipped with main reducer and differential. Half shaft inside and outside half shaft through the constant velocity universal joint together, there are flowers outside half shaft end system, it engages flange and half shaft. Torque when driven current bridge consists of the main reducer, differential to the inner half shaft, universal joint, outside half shaft and axle shaft flange, finally passed to the wheel hub, driving wheel rotation. To: steering knuckle by steering knuckle axis neck and steering knuckle shell bolting as a whole. Steering knuckle axis neck with two wheel hub bearing, with supporting wheel; Steering knuckle axis pressed bushing, within internal carotid wall of hole in half shaft bearing. The steering knuckle shell fluctuation two parts of both ends up and down the bold part of the king pin, and the stop pin, stop at the steering knuckle shell with a steering knuckle arm, upper cover under the steering knuckle shell bottom is equipped with. Grease by upper and lower nozzle after injection, respectively into the heart of the king pin oil duct, again from two side holes into the king pin and bushing, lubrication. Automobile steering, steering drag link pull the steering knuckle arm drive, steering knuckle swing around the king pin when the steering wheel can be subsequently deflection, so as to realize auto steering.

Support the bridge

Support the bridge belongs to the driven bridge. Single bridge driven triaxial car, driving axle trailer designed to support bridge before the engine front drive axle is also supported bridge over the car's rear axle also belong to support the bridge.

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