Repair and Maintenance of Universal Transmission Device of Internal Combustion Forklift

by:Jxforklift     2022-04-30
The universal transmission device of the internal combustion forklift is composed of a universal joint fork, a cross shaft assembly, etc., and its function is to transmit the power of the transmission to the main reducer. The transmission shaft transmits large torque, high speed and heavy work. Therefore, although its structure is not complicated, the technical requirements are very high. Otherwise, chattering, rattling, falling off and shaft breakage will occur. Therefore, in the use of internal combustion forklifts, the maintenance of the drive shaft should be done carefully, and problems must be dealt with in time. During the driving of the internal combustion forklift, the drive shaft has to bear a large torque and impact load, and at the same time rotate at a high speed, accompanied by continuous vibration, its lubrication condition is poor, so it is easy to cause wear, deformation and damage, resulting in abnormal operation and abnormality. malfunctions such as noise and chattering. When the internal combustion forklift starts, if the body trembles, there will be a slight impact sound; while driving, you can also hear a periodic sound from the chassis. The faster the speed, the louder the sound. In severe cases, the cab vibrates, and when you hold the steering wheel, your hands feel numb. The reasons are: the cross shaft of the universal joint and the needle roller are worn and loose or the needle roller is broken; the fixing screws of each connecting part are loose. When the above faults are encountered, you can go to the bottom of the vehicle to check whether the connecting screws are loose, and shake the drive shaft by hand to detect the worn parts; lift the rear wheel and rotate it to check the vibration and abnormal noise of the drive shaft. ; You can also use a dial indicator for the vehicle to detect the deformation of the drive shaft, and after identifying the cause, repair it separately. During maintenance, add grease to the cross bearing of the internal combustion forklift, check whether the cross bearing is loose, put the transmission in neutral, release the parking brake, hold the drive shaft tube tightly with both hands, and turn sharply from left to right, and should not be used. There is obvious amount of looseness, if necessary, dismantle and repair it. During maintenance of the internal combustion forklift drive shaft, it is also necessary to check whether the fasteners are firmly fixed, the appearance and curvature of the drive shaft, and repair if necessary. Before the transmission shaft is repaired and assembled, all its parts must be cleaned, especially the oil passages, journals and needle bearings of the cross shaft, which should be washed with clean kerosene and dried with compressed air. Coat the mating surface with grease, and install it after matching the marks. After the universal joint is installed, it should rotate flexibly without obvious gap, and there should be no card issue.
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