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What is the cause of the failure of the drive shaft universal joint?

Views: 2     Author: Site Editor     Publish Time: 2021-11-22      Origin: Site

The cross shaft is also called ten-byte universal joint. The English name is universal joint. It is a part that realizes variable-anglecardan axle shaft for sale-Xinsanming power transmission. It is used to change the position of the transmission axis. It is the universal transmission device of the automobile drive system. "Joint" part. The cross-shaft rigid universal joint is a variable speed universal joint widely used in automobiles, and the maximum angle of intersection between two adjacent shafts is allowed to be 15゜~20゜. The cross shaft is one of the key parts of the cross shaft rigid universal joint.

Reasons and treatment of cardan joint shaft

The failure of the universal joint of the drive shaft is mainly due to the wear of the journal and the bearing and the bending and deformation of each journal, which causes the center lines of the cross shafts to be not on the same plane, or the center lines of two adjacent shafts are not vertical. Because the universal joint cross shaft journal and bearing wear gap is too large, the cross shaft shakes during operation, causing the center line of the transmission shaft to deviate from its rotation center line, causing the transmission shaft to vibrate and the transmission shaft to make abnormal noises during operation Phenomenon. Wear is mainly caused by lack of lubrication.

The wear of the universal joint cross shaft journal and bearing should not exceed 0.02~0.13mm from the perspective of use, and should generally be kept at about 0.01mm. If it exceeds 0.13mm, vibration and noise of the drive shaft will occur. If the cross shaft journal wears out of the groove, the groove is very deep and should be repaired or replaced. If surfacing and inlay repairs are used, heat treatment and grinding are also required. After processing, the out-of-roundness of each journal is required to be 0.01mm, and the taper cannot be large (the length of 20mm cannot be greater than 0.01mm). To check the verticality of two adjacent axes, be sure to be vertical. After processing and repair, the axis of each journal should be in the same plane.

When the vehicle is running, because the direction of torque transmission is the same, the direction of force on the cross shaft is also the same. Over time, the unilateral wear of the cross shaft journal is caused. As time goes by, the force side of the cross shaft will wear more and more, and grooves will cause looseness and noise. You can use the cross shaft to rotate 90° relative to the original position, which can extend the use time. When assembling, pay attention to the side with the oil nozzle facing the drive shaft. The universal joint fork should rotate freely on the cross shaft, and there should be no jamming, and there should be no axial gap. Grease should be injected frequently in daily maintenance to prevent the wear of the cross shaft journal and bearings due to lack of grease.

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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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