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Is the universal joint really "universal"?

Views: 3     Author: Site Editor     Publish Time: 2021-12-29      Origin: Site

The flywheel can store power, so what can transfer power? The answer is the drive shaft!

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The drive shaft is an important part of the transmission of power in the car drivetrain. Its role is to transfer the power of the engine to the wheels together with the gearbox and drive axle, so that the car produces driving force. The drive shaft is composed of shaft tube, telescopic sleeve and universal joint.

Of course, not all cars need a drive shaft to assist the transmission of power, such as front-drive vehicles do not need. Vehicles equipped with drive shafts are mainly commercial vehicles, special vehicles, including front-rear drive UV, cars and so on.

Today we are not going to talk about the drive shaft, but the important part of the drive shaft - universal joint!

Universal joint, namely universal joint, is to achieve variable Angle power transmission parts, used to change the position of the transmission axis direction, the structure and function of universal joint is a bit like the joints on human limbs, it allows the Angle between the connected parts to change within a certain range.

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The universal joint is usually located at the end of the drive shaft and serves as a connection between the drive shaft and the drive axle, half shaft, or drive shaft.In the front rear drive car to transfer the power to the rear drive axle, must be connected between the transmission power output shaft and the drive axle. Considering the uneven road surface in the operation of the car, will make the Angle and distance between the transmission output shaft and the drive axle input shaft change, cannot be directly "hard connection", to use a "to change the strain" device to solve this problem, so there is a joint similar to the body.

1.   Two types of universal joints

1Non-uniform universal joint:

That is, the commonly used cross shaft universal joint. In the drive shaft rotation, the driven shaft rotation angular velocity is not equal. In order to achieve constant rotation, generally should be used in pairs, that is, two universal joints are installed at both ends of the transmission shaft, so that the universal joints at both ends of the transmission shaft fork in the same plane. Drive shaft and driven shaft should basically keep parallel. It is mainly composed of universal joint fork, cross shaft and needle bearings and other parts.

2 Constant velocity universal joint:

Its transmission characteristic is that the rotational angular velocity of the driving shaft and the driven shaft is equal. Front axle driven cars are equipped with constant speed universal joints (drive and steering).

2.   Three forms of constant velocity universal joint:

1)Ball fork constant velocity universal joint

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2)Ball cage type constant velocity universal joint

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3) Ball pin constant velocity universal joint

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In fact, the most common universal joint is mainly a "cross" joint, which allows the shaft connected to it to swing up and down or left and right. It is universal, but there are only four directions, but it is enough for a relatively fixed shaft.

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  : +86 29 86033971
 : +86 29 86033972
  :  zhao.wanbao@dcsxsm.com
  : The Innovation Industrial Park, No.36, Jingwei Road ,Xi'an Economic and Technological Development Zone,Xi'an City,Shaanxi Province,China
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