Suction truck drive shaft daily maintenance and maintenance
The judgment of the unbalanced propeller shaft of the suction truck and the elimination of unbalance of the propeller shaft of the vehicle will cause a periodic sound during driving. The faster the driving speed is, the louder the noise will be. In severe cases, the body can tremble, the cab vibrates, and the steering wheel has a numb feel. As the vehicle body trembles, it will cause loosening of the parts of the suction truck vehicle and cause accidents. Cab vibration, severe cracking of solder joints. The reasons for the vibration of the suction truck are: (1) The transmission shaft is bent; (2) The position of the flange and shaft tube of the drive shaft is skewed when welding; (3) Loosening of intermediate support fixing bolts; (4) The position of the middle support bearing is skewed; (5) Cardan joint damage; installation does not meet requirements; (6) The original balance weight falls off the drive shaft. Suction truck drive shaft imbalance, endangering safe driving. If there is a failure of the transmission shaft imbalance, the following methods can be used to judge: The front wheel of the vehicle is plugged with wood, and the middle and rear drive axles on the side of the car are used with the jack; the engine is started and the high gear is put up. Drive shaft oscillation situation. Observe that when the speed drops, if the oscillation increases significantly, it indicates that the transmission shaft is bent or the flange is skewed. The bending of the transmission shaft is the bending of the shaft tube, and the failure of the transmission shaft bending and breaking occurs more. If the suction shaft of the suction truck is uphill, the shaft is damaged due to overload or overhang. Although the intermediate support of the transmission shaft is strengthened and the strength of the flange fork is reinforced, failure of breakage damage still occurs. After replacing the shaft parts, the balance should be checked after the alignment. The amount of unbalance should meet the standard requirements. The technical condition of the universal joint fork and drive shaft hanger shall also be checked in detail. If the installation is not satisfactory, loose shafts and vibrations caused by the damage of the cross shaft and roller will also cause the shaft to lose its balance. Analysis of the failure of the middle shaft of the transmission shaft is damaged. When the vehicle is running, a “beep, bang†sound is emitted. The faster the vehicle speed is, the louder the sound is, which is the middle bearing damage failure. The above fault is specifically the bearing failure of the intermediate shaft of the transmission shaft and abnormal noise is emitted. If the car is at the start, there is a "gren, grid" sound, and there is a sense of vibration, is the middle of the support is not correct, fixed bolts loose / fall off, should be promptly overhauled. The inspection method is to park the car on a flat site, hang the car into neutral, and twist the drive shaft by hand. If the resistance is large, check the fastening of the middle support shaft and the position of the intermediate bearing. If the rotating shaft feels loose, check the middle bearing and rubber sleeve of the hanger. Bearing oil shortage should be filled with grease, rubber sleeve damage should be replaced. There are mainly the following reasons for the damage of the middle bearing of the suction shaft of the suction truck: (1) Insufficient grease in the suction truck causes the bearings to be worn or even damaged. (2) Suction truck bearing manufacturing quality problems, such as bearing installation is not correct, skew. (3) Loosening the fixing bolts of the suction truck bracket or loosening the fixing bolts. (4) The suction shaft of the suction truck bends and deforms, resulting in imbalance, causing vibration of the intermediate shaft of the transmission shaft. (5) The connection flange of the suction end of the suction truck is loose, causing the drive shaft hanger to be overloaded and damaged. (6) Manufacturing quality problems of the suction sleeve rubber sleeve, and intermediate support skeleton manufacturing defects.
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