2018-01-16 15:55:00 0
青海快3Excessive noise of hydraulic oil pump
青海快31. There is air intrusion in the hydraulic pump; check the sealing of each connection and oil seal, check the height of the oil tank vent and oil level, and the length of the oil pipe.
2. The bearing of the hydraulic oil pump (hydraulic vane pump, plunger pump, hydraulic gear pump) is worn or damaged; replace the new bearing.
3. Stator surface brushing; polishing or grinding.
4。 The oil in the hydraulic system (the hydraulic system manufacturers also call him: hydraulic station, hydraulic pump station, small hydraulic system, micro hydraulic system, hydraulic system, hydraulic power unit, small hydraulic pump station, micro hydraulic pump station) Viscosity is too large; select an appropriate viscosity oil。
5. The working pressure of the hydraulic pump is too large; reduce the pressure to the specified range.
6. The speed of the oil pump is too high; reduce the speed of the pump appropriately.
7. The hydraulic system has poor oil absorption; clean the oil suction circuit of the hydraulic pump station.
8. The coaxiality of the coupling of the hydraulic pump and the motor is low, and the fastening part is loose; adjust the coaxiality of the hydraulic pump and the motor, and tighten the screw.
9。 The blade chamfer of the vane pump (hydraulic vane pump, variable vane pump, fixed vane pump, double vane pump) is too small, and the height is inconsistent; increase the chamfer or process it into a circular arc。 Repair or replace the vane pump blade。
10. The sealing ring of the pump shaft is too tight; adjust the sealing ring appropriately.
The temperature rise of the hydraulic pump is too high
1. The pressure and speed are too high, the hydraulic oil pump is overloaded; adjust the pressure and speed.
2。 The axis gap is too large, the internal leakage is serious; adjust the gap。
3. The radial clearance of the pump core assembly of the hydraulic pump is too small; adjust the radial clearance of the pump core assembly of the hydraulic pump.
The hydraulic oil pump does not deliver oil or the flow is insufficient
1。 A wedge-shaped gap is generated between the pump body of the hydraulic pump and the oil distribution plate。 The suction and pressure oil chambers are communicated; the elastic coupling is used to reduce the radial force。
2. The oil distribution plate or cylinder surface of the hydraulic oil pump is brushed; grinding, polishing or replacing the new oil distribution plate.
3. Hydraulic system (hydraulic pump station components commonly used by hydraulic system manufacturers when designing hydraulic systems: hydraulic vane pumps, oil pipes, air cooling, hydraulic oil pumps, joints, variable vane pumps, oil tanks, motors, hydraulic pumps, quantitative vane pumps, hydraulics (Valve, plunger plunger pump, pressure gauge, variable plunger pump, plunger plunger pump, internal gear pump, external gear pump, etc.) The hydraulic fluid level in the oil tank is too low. The filter is clogged; add enough oil , Clean the filter.
4. The plunger of the plunger pump (hydraulic plunger pump, variable plunger pump, oblique axis variable plunger pump, swash plate variable plunger pump) is worn and the internal leakage is serious; replace the plunger with a new plunger pump.
5. The center return spring is too short or broken; replace the spring.
Hydraulic oil pump pressure rise is not high
1. The overflow valve in the hydraulic system is not adjusted or failed; adjust and repair the overflow valve in the hydraulic pump station.
2。 The spring adjustment sleeve of the pressure compensation variable is not adjusted。 The limit screw is not adjusted; adjust the adjustment sleeve and the limit screw。 And tighten。
3。 The hydraulic pump does not deliver oil or the flow rate is insufficient; find out the reason why there is no oil or the flow rate is insufficient。
Hydraulic pump invariant
青海快31。 Hydraulic oil pump (hydraulic oil pumps produced by hydraulic pump manufacturers are mainly: EG-F gear pump, hydraulic vane pump, HVP variable vane pump, high and low pressure hydraulic pump, VP-SF variable vane pump, hydraulic gear pump, PR2R quantitative vane pump , Hydraulic plunger pump, V variable plunger pump, P plunger pump, SQP hydraulic oil pump, double vane pump, GPY external gear pump, VP-SF vane pump, spline variable vane pump, IPH internal gear pump) oil return pipe Blockage and back pressure of oil return are too high。 It is difficult to relieve the pressure of the oil in the upper chamber of the variable piston; check the oil return pipe in the hydraulic station。 Reduce the back pressure。
2. The spring core shaft is bent and stuck; trim or replace the spring core.
3. The variable piston of the variable piston pump is stuck; trim or replace the variable piston of the variable piston pump.