Unbalanced vehicle drive shaft, while driving there will be a period of sound, the speed is faster, the greater the noise. Seriously, can make the body shaking, cab vibration, steering feel numb. Because the body shaking, will result in the vehicle the parts of the loose, cause of the accident. The cab vibration will cause serious cracking of a solder joint.
The cause of buffeting the vehicle:
(1) driving shaft bending;
(2) flange and axle tube welding position skew shaft;
(3) the middle supporting fixed bolt loosening;
(4) the middle position of the bearing deflection;
(5) joint damage, installation of substandard requirements;
(6) the original balance block off the drive shaft.
The drive shaft is not balanced, endanger the safety of driving. If the failure of transmission shaft imbalance, can use the following method to judge:
The front wheel with wooden pad plugged, jack up the side of the car, the driving axle; the engine, hang high gear, check the drive shaft vibration of pendulum. When the rotational speed is decreased, the vibration of the rotating shaft is obviously increased, which indicates that the transmission shaft is bent or the flange is skewed.
The transmission shaft is bent, most of which is caused by the overload of the car. Coaler due to overload, hanging, shaft bending, fracture failure occurs. If some car coupled with the trailer pulled more than 60 tons of coal, transmission shaft due to overloading, overloading serious damage. In spite of reinforcing the intermediate support of the drive shaft, the strength of the flange fork is strengthened, but the fault is still broken.
The replacement of the transmission shaft part, after straightening, should balance checking, unbalance should conform to standard requirements. Technical conditions of the universal joint fork and a transmission shaft hanger should also do detailed examination, such as by the installation of undesirable, cross shaft and roller damage caused by loose Kuang, vibration, also can make the drive shaft out of balance. |