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/*728*90 created on 2018/5/16*/ var cpro_id = "u3440131"; Home>Bearing knowledge> Detailed discussion on the damage of the center of the "drive shaft" Detailed discussion on the damage of the "drive shaft" center support
When the car is moving; announce the sound of “呜;å‘œâ€; the faster the speed; the louder the sound; that is, the damage to the center support. The above mentioned fault is the fault of the center of the drive shaft; and the abnormal sound is announced. If the car is starting There is a sound of "grid; grid"; there is a sense of oscillation; the center is not supported; the fixing bolts are loose and dropped; the repair should be carried out in time. The method of checking is to park the car on a flat site; Hang the gear; twist the drive shaft by hand; if the resistance is very large; check the fastening condition of the central support bolt of the drive shaft and the orientation of the center bearing. If the drive shaft feels loose, check the center bearing of the hanger and Rubber sleeve. Bearings lack of oil should be filled with smooth grease; rubber sleeve damage should be replaced. /*250*250 was created on 2017/12/25*/ var cpro_id = 'u3171089';
The main cause of damage to the center of the drive shaft is the following:
(1) lack of smooth grease; the formation of bearing wear and tear is even damaged.
(2) Quality problems of the bearing making device; if the bearing device is not correct; skew.
(3) The bracket fixing bolt is loose; or the fixing bolt is not tight.
(4) The drive shaft is bent and deformed; the imbalance is formed; causing the oscillation to form the center support damage of the drive shaft.
(5) The transmission end flange is loose; the drive shaft hanger is too strong and damaged.
(6) The quality problem of rubber sleeve production; the shortcomings of the central support skeleton.
The center of the transmission shaft of the device shall be supported; the following method shall be selected: the center support shall be installed first; the threaded bolt on the fixing bolt shall be tightened to a certain extent in the future; the screw shall not be screwed; the drive shaft shall be moved by hand; there shall be no jam; the resistance of the transmission shaft shall not be changed. Too big. The middle and rear wheels are padded; the initiator is initiated; the low speed is changed; the low speed is hung; the drive shaft is changed to take the initiative. The fixing bolts are tightened after the alignment; the tightening torque should be common. The drive shaft is bent and deformed; the oscillation occurs; the drive shaft should be disassembled; the straightening; and the drive shaft check; the first check dynamic balance. In the application, the center support bearing should be smoothed and viewed frequently; Fasten. If the drive shaft center support adapter plate is cracked, replace the assembly.
The cause of the wear of the drive shaft universal joint cross shaft and its disposal:
The main problem of the drive shaft joint is that the journal and bearing wear and the journals are tortuous deformation; the center line of each axis of the cross shaft is not on the same plane; or the adjacent two-axis center line is not straight. Because the universal joint cross The shaft journal and bearing wear clearance is too large; the cross shaft sways during operation; the center line of the drive shaft violates its center of rotation; the swaying appearance of the drive shaft and the abnormality of the transmission shaft during operation are declared. Short and smooth. The wear of the universal joint cross shaft journal and bearing; from the application situation should not exceed 0. 02 ~ 0. 13mm; usually maintained at about 0. 01mm. If it exceeds 0. 13mm; The appearance of the shaft vibrating and vocal. If the cross shaft journal wears out the groove; the groove is deep and should be repaired or replaced. If it is repaired by surfacing and inserting, it should be heat treated and ground. After processing The out-of-roundness of each journal is 0. 01mm; the taper cannot be large (20mm length can not be greater than 0. 01mm). To check the straightness of the adjacent two axes; be sure to ensure straightness. The axis of each journal after processing and repair should be In the same plane.
When the vehicle is traveling; because the direction of torque transmission is common; the direction of the force of the cross shaft is also common. One-to-one wear of the cross shaft journal is formed, followed by the passage of time; the side of the cross shaft is worn and increased; Slots; so that the pines can be squeaked. It can be adopted to convert the cross shaft 90 degrees relative to the original orientation; this can extend the application time. When assembling, pay attention to the side with the nozzle toward the drive shaft; the universal joint fork should It should be transformed on the cross shaft; small should have a stuck surface; nor should it have an axial gap. In normal protection, smooth grease should be injected; avoid the formation of cross shaft journals and bearing wear due to short and smooth grease.
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Detailed discussion on the damage of the "drive shaft" center support
Source: Bearing network time: 2013-01-16