In a car with front-engine rear-wheel drive or all-wheel drive, due to the deformation of the suspension during the movement of the car, there is often relative movement between the input shaft of the drive shaft final drive and the output shaft of the transmission or transfer case. In addition, avoid Certain mechanisms or devices cannot achieve linear transmission, and there must be a device to achieve the normal transmission of power, so universal joint manufacturer transmission appears.

First of all, the universal joint on the drive shaft can transmit power normally and reliably when the relative position of the output shaft of the transmission and the input shaft of the final reducer changes under such road conditions. Secondly, the universal joint can make the two shafts run evenly. The universal joint can also change the angle between the two shafts, and enable the two shafts to perform constant angular speed transmission.

Cars using universal joint transmission need to pay attention to the following points to extend the service life of universal joint transmission. First of all, after stepping on the clutch pedal, be careful not to lift it up suddenly. Secondly, the overloading and overspeeding behavior of the car will also damage the drive shaft. Third, don't use high gear to start, and develop good driving habits. Finally, check the transmission shaft regularly to check whether the transmission shaft is deformed and whether the places connected to the transmission shaft are loose.

In addition, the angle of the universal joint should be minimized when designing the universal joint.

  1. When the relative position of the connecting two shafts changes within the expected range, the power can be reliably transmitted;
  2. Connecting two shafts can run evenly. The additional load, vibration and noise caused by the angle of the universal joint should be within the allowable range;
  3. High transmission efficiency, long service life, simple structure, convenient manufacture and easy maintenance. For automobiles, because the output shaft of a cross-shaft universal joint has a certain included angle relative to the input shaft, it rotates at unequal speeds. For this reason, double universal joint or multi-universal joint transmission must be adopted, and the same transmission The two universal joint forks connected by the shaft are arranged on the same plane, and the included angles of the two universal joints are equal. This is very important. The angle of the precision universal joint should be minimized when designing.