Talking about the Installation of Hydraulic Pump and Hydraulic Motor in Hydraulic System

The axial ends of the hydraulic pump and the motor are generally not to bear the radial force. Do not install the transmission parts such as the belt pulley and the gear directly on the shaft of the pump or motor. However, in practice, there are not many examples of failures and economic losses due to structural constraints not being installed as required. For example, domestic static smooth steel roller steering gear pump, that is, through the tape drive and the engine connection. In another example, the German-made ABG423 asphalt paver screed lifting mechanism of the hydraulic pump, which is connected by gear transmission. ABG423-type paver with a hydraulic pump for the gear pump, under normal circumstances, this type paver in use for some time, there screed slow increase, or even mention the failure. The reason is that the pressure of the system is low. The system pressure is low due to the hydraulic pump caused by the leak. Dismantlement found that the pump caused a serious problem of internal drainage, sweep the hall is caused by the bearing wear and bending deformation of the shaft. Bearings are generally no wear and tear tolerance, which shows that due to installation errors caused by shaft bending deformation is the root cause of such failures. As the gear pump hydraulic pump will produce radial force, the radial force will be directly applied to the cantilever arrangement of the gear shaft mounted on the pump, causing additional deflection of the pump shaft, resulting in pan, low oil pressure, or even can not afford Screed and other failures. Gear pump price of about 6,000 yuan, if often damaged, its economic losses will be very serious. Another example, YE-160 belt conveyor motor often leak phenomenon, seal replacement less than 3 months began to leak. Not with the domestic oil seal, the use of imported; imported not, to advance replacement, resulting in great waste of manpower, financial resources and time. The reason for the oil leakage is that the hydraulic motor drives the tape pulley through the chain drive, which causes oil leakage due to the radial force generated by the chain drive acting on the oil seal. To this end, I designed a unloading institutions, due to no longer allow the hydraulic motor to withstand radial forces, oil spills problems can be solved.