The universal transmission device of a forklift is mainly used for the power transmission between the two axes which do not coincide with each other and change the relative position of the fork in the operation of the forklift truck. In the heavy load truck (CPCD50, 5CQN), the connection between the transmission and drive axle, and between forklift engine and oil pump connection, then the Hangzhou forklift accessories manufacturers to understand the maintenance of forklift under universal transmission device and everyone!
Forklift universal transmission device should not be tight, bolt complete, fastening, assembly angle is correct, good lubrication, running without jitter is tantamount to noise. Therefore, in the use of forklifts, the transmission shaft should be carefully maintained, and problems must be dealt with in a timely manner.
Forklift driving, the drive shaft must withstand torque and impact load, at the same time for high speed rotation, with the continuous vibration, the lubrication condition is bad, so prone to wear, deformation and damage, which will work out of the abnormal sound and chattering fault. When forklift truck starts, if the body trembles, accompanied by "lattice". The impact of the grating; a sound of periodic noise is heard on the chassis; the faster the sound. In severe cases, the cab is vibrating, holding the steering wheel, and the hands feel numb. The reasons are as follows: universal joint, cross shaft and needle roller wear loose or needle broken; each connection parts of the fixed screws loose. Transmission shaft bending deformation and so on. Meet the above fault, to check the bottom connecting screws loose, shaking hands and drive shaft, which can detect the wear parts; the rear wheels, gear set rotation, considerable drive shaft vibration and abnormal sound check; can also dial gague vehicle transmission shaft deformation, identify the reasons, respectively. To be repaired.
Drive shaft assembly dynamic balance once damaged, additional dynamic load at work caused by the centrifugal force, easy deformation, vibration and noise caused by the transmission shaft, the dynamic load increases, the transmission efficiency decline, accelerated the damage of parts. The use of the drive shaft accidental impact, disassembly and percussion deformation, surfacing parts of the relative position, precision, damage, etc., will make the transmission shaft assembly rotating mass center from the axis of rotation, damage its balance performance.
Maintenance, to cross bearing grease; cross check bearings with or without looseness, the transmission is neutral, release parking brake, hold the transmission shaft tube, or forcibly turn sharply, there should be no obvious Songkuang, if necessary, remove the breakdown repair. When driving shaft maintenance, also check whether the fasteners are firm and reliable, the shaft surface and the bending degree, repair when necessary.
The drive shaft shall be cleaned before assembly, especially in the oil, journal and needle bearings of the cross shaft. Clean kerosene shall be cleaned and dried by compressed air. Grease the mating surface with the grease. After the cardan joint is assembled, it should be flexible, with no obvious clearance and no hairpin phenomenon.
For example, the CPCD50 forklift truck is connected by a drive shaft between the transmission and the drive axle. This type of forklift transmission shaft is composed of flange fork, universal joint, cross shaft and bearings, the cross shaft is provided with a lubricating oil, which can be injected into the lubricating oil, the lubrication of the bearing. When the cross shaft causes excessive clearance in the needle bearing, it should be removed, driven, pumped, replaced by cross shaft or needle roller bearings (must be replaced in pairs) according to wear. Lithium base grease should be used for bearing lubrication. It is absolutely forbidden to lubricate with thicker grease (e.g., calcium based grease), because the use of viscous oils will speed up the wear of bearings or cross axes.