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The vehicle transmission shaft is not balanced, there will be a periodic sound in the running, the faster the speed, the louder the sound. In severe cases, it can make the body shake, the cab vibrate and the steering wheel feel numb. Due to the body shaking, will cause the vehicle parts of the loose, leading to accidents. Cab vibration, serious welding joint cracking.

Reasons for vehicle vibration include:

(1) the drive shaft is bent.

(2) the welding position of flange and shaft tube of the drive shaft is skewed.

(3) the middle support fixing bolt is loose.

(4) the position of the intermediate supporting bearing is skewed.

(5) the universal joint is damaged; The installation is not up to standard.

(6) the original balance block on the drive shaft falls off.

The unbalanced driving shaft endangers the safety of driving. If the transmission shaft is out of balance, the following method can be used to judge: the front wheel pad wooden plug, jack up the car side of the middle and rear drive axle; Start the engine, put it in high gear and observe the shaft shimmy. During the observation, note that if the rotational speed drops and the pendulum vibration increases obviously, it indicates that the transmission shaft is bent or the flange is skewed. Drive shaft bending is shaft tube bending, most of the overload is caused by the car. Coal transport vehicles due to overload, overhang, transmission shaft bending, fracture failure occurred more. If some cars plus trailer hauling more than 60 tons of coal, transmission shaft due to overload, overhang damage. Although the middle support of the transmission shaft is strengthened and the strength of the flange fork is strengthened, the failure of fracture damage still occurs.

Replace the transmission shaft parts, straightening, balance should be checked, unbalance should meet the standard requirements. The technical condition of the cardan fork and the suspension of the drive shaft should also be checked in detail. If the installation is not up to standard, the cross shaft and the roller may be damaged and cause loose and vibration, which may also cause the drive shaft to lose its balance.

The above information is provided by xingtai yuantuo auto parts manufacturing co., LTD.

Company website: http://www.beiancar.com.cn