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The structure, influence factors and maintenance method of universal joint
发布时间:2021.06.10 新闻来源:邢台远拓汽车零部件制造有限公司

Universal joint refers to the use of the ball device to achieve the shaft power output in different directions, is a very important part of the car. The combination of universal joint and transmission shaft is called universal joint transmission device. In the front engine rear-wheel drive vehicle, the universal joint transmission device is installed between the transmission output shaft and the drive axle main reducer input shaft; In front-engine, front-wheel-drive vehicles, the drive shaft is omitted and the universal joint is mounted between the front axle axle, which is responsible for both driving and steering, and the wheels. The following Xiaobian xian set network you introduce to you the structure of the universal joint, influencing factors and maintenance methods.

 

The structure, influence factors and maintenance method of universal joint

 

structure

In automobile driveline and other systems, in order to realize the power transfer between some axes intersecting or the relative position of the rotating shaft often changes, it is necessary to use universal transmission device. The universal transmission device is generally composed of a universal joint and a transmission shaft, and sometimes has a middle support. It is mainly used for the following positions: 1-universal joint; 2- Drive shaft; 3- Front drive shaft; 4- Middle support

 

Between the gearbox and the drive axle of an engine front and rear wheel drive car. When the distance between the transmission and the drive axle is far, the transmission shaft should be divided into two or even more sections, and the intermediate support is added. Between the sub-brake and the drive axle or between the drive axle and the drive axle in a multi-axle driven vehicle. Due to the deformation of the frame, it will cause the mutual position change between the two transmission parts between the axis.

 

The use of independent suspension between the car and the differential. Steering between the axle differential and the wheels. The power output unit and steering control mechanism of the car.

 

Factors affecting the

The factors affecting the balance of the uncorrected universal joint are as follows:

1. Unbalance caused by the manufacturing tolerances specified in the design specifications for the main parts of universal coupling.

2. Unbalance caused by the eccentricity of the universal joint and shaft to the center plane.

3. Clearance between matching parts in the universal joint.

4. Unbalance caused by uneven or asymmetric distribution of accessories in the universal joint.

5. Unbalance caused by uneven material or wear of all parts of the universal joint.

 

The structure, influence factors and maintenance method of universal joint

Maintenance methods

The maintenance of the universal joint cross shaft is to wear the gear oil. Because the lubricating oil nozzle of the universal joint cross shaft needle roller bearing is an ordinary grease nozzle, it causes a kind of illusion to people. For a long time, butter has been commonly added to lubricated. In fact, it is very difficult to add butter to the needle roller bearing from the grease nozzle, and even to reach the end face of the cross shaft journal is very difficult. Lubrication with butter (i.e. calcium based grease) can cause early damage to a large number of cross shaft needle roller bearings.

 

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