In the daily production process, HP500 crusher hydraulic system common faults are:
（1）The hydraulic pump is unable to pressurize
（2）The locking and releasing pressures do not reach the set point
（3）Locking, release pressure can not be maintained
（4）The crusher cannot clear cavity
（5）The crusher can not adjust the discharge well
Among them, (4) (5) two kinds of faults occurred more intuitive, mainly related solenoid valve and solenoid valve control circuit, the failure occurred little
As for (3), as long as the locking cylinder, oil pressure switch PS1-A, RLV5 safety valve, solenoid valve SOL3, one-way valve CL1 element does not leak, locking pressure can keep; release cylinder, oil pressure switch PS2-A, RLV6 safety valve, one-way valve CL3 element does not leak, release the pressure you can keep.
In the long-term maintenance, through (1) (2) failure analysis, summary, there are several main reasons:
1、The hydraulic pump can not pressurize the cause of the failure
-The hydraulic oil is not enough, the oil pump can not start (the hydraulic system is in automatic control);
-The hydraulic pump coupling pad wear or damage (by observing the changes of hydraulic station G1 pressure gauge pointer judgment)
-The oil pipe in the hydraulic tank is seriously leaking
-Hydraulic pumps wear badly or leak out
2, lock cylinder and release cylinder pressure can not reach the set value of the cause of the fault
-Manual pressure, hydraulic pressure is not enough
-Hydraulic tubing, locking cylinder, release cylinder leakage
-High temperature of hydraulic oil
-Hydraulic oil is spoiled or flooded
-Safety valve, solenoid valve fault
treatment measures
-The hydraulic crusher station and lubricating station separation.
-In the hydraulic pump control circuit are connected in series with the time delay relay contacts closed, effectively avoid the hydraulic oil pressure instability caused by frequent fill pressure. By the hydraulic system control principle shows that the system in the automatic mode, hydraulic pump start, stop by the PS1-A pressure switch and PS2-A switch control, instantaneous disconnection, indirectly, will cause the hydraulic pump will be started frequently after the transformation, the time delay relay contact connection string into the control of hydraulic pump contactor coil circuit, time is set to 2 seconds, to avoid instability caused by the hydraulic pressure of the hydraulic oil pump PS1-A and PS2-A pressure switch instant action frequent start, stop if the hydraulic oil. Pressure is lower than the set value, 2 seconds after the hydraulic pump to fill pressure, does not affect the normal work of the crusher.
-Hydraulic tank open manhole and visualization, convenient for daily on the box body components for inspection, maintenance. When the hydraulic pump frequently fill pressure, first check the tubing, locking cylinder, release cylinder leaks, and then check the hydraulic oil in the oil return pipe if there is oil spill. To determine the fault point from intuition. In a timely manner to carry out maintenance work, avoid frequent fill pressure;
-Daily inspection of hydraulic oil, to ensure the purity of hydraulic oil, found that hydraulic oil deterioration, water seepage should be replaced hydraulic oil; check hydraulic oil filter, found the filter plug, timely replacement; regular hydraulic tank for thorough cleaning;
-Regularly check the accumulator nitrogen pressure, the locking loop pressure is lower than 83bar, the release circuit is below 105bar, should promptly supplement nitrogen;
Hunan Fengwei Wear Parts Foundry mainly engaged in casting Metso, Sandvik crusher accessories, mainly the production of jaw crusher accessories (tooth plate, backplate, pressing plate), cone crusher accessories (rolling mortar wall, broken wall, lining plate, pressure sleeve etc.), accessories (ball mill lining board, steel ball etc.), impact crusher (blow bar, liner), hammer crusher, roller crusher of roller wear products and various accessories. In addition we wear resistant alloy and a special dredging vessel chain plate, sand pump Straw chain plate production line, achieves the perfect combination of wear resistance and toughness the users all over the country and supporting around the shipyard, Straw uses a unique recipe and The heat treatment process, the service life is ordinary alloy straw more than three times. Honesty is the foundation of life, quality is the enterprise development life, is willing to wholeheartedly cooperate with you! Welcome friends to map call customization
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