Common fault and maintenance of Guizhou high altitude operating car
Fault 1: the hydraulic system can not reach the required working pressure, and increase the engine throttle。 Phenomenon: the leg does not get in, the swing arm does not come up, the turntable rotates。 From the pressure gauge, the pressure of each organization is very low。
May because of relief valve opening pressure is too low。 The tank oil level is too low, or the suction tube blockage。 The pressure and return lines of collusion or leakage is too large, so that a large number of oil did not participate in the work flow back into the tank。 The pump is damaged or leaking too large。
Troubleshooting: to adjust the relief valve opening pressure of the oil suction pipe or add a new check, check the circuit, especially the check valve lock, motor pump, repair, or replacement.
Fault 2: control gear failure
Reasons: the failure of the lever fork the damage locating bead spring failure
Exclude methods: or repair or change
河北11选5开奖结果Fault 3: oil leakage in the hydraulic system
Reasons: the joint loosening the damaged seals the side pipe rupture or welded joints of oil sand
Troubleshooting: 1 the new welding, tighten or replacement
Fault 4: the throttle valve is inflexible
河北11选5开奖结果Reason: the wire rope system is stuck the damage the spring trip due to loosening of the rope card changes lack of lubricating oil
Troubleshooting: 1 the new branch overhaul to adjust the itinerary of the lubrication of the P fastening;
Fault 5: the pressure gauge oil does not indicate, or the pressure does not rise
Reasons: the liquid fuel tank is too low or the suction pipe plug the pressure relief valve adjustment is too low the oil pump inlet pipe on the front side of the pump is not sealed or because of damage in the side wear serious leak the pressure pipe or return pipeline leakage is too large, collusion or damaged pressure gauge
Troubleshooting: 1 gas and remove foreign bodies according to the provisions of the appropriate adjustment pressure at the seal of the excluded or renewed the maintenance or repair or replace or repair or replace.
Fault 6: the noise and vibration of the oil road is serious
Reasons: the air in the pipeline, pipe edge component failure element fastening the change too much too fast, the oil temperature is too low, insufficient oil pipeline blockage
Method: the agencies repeated action, exclude internal gas pump maintenance。 The change in the operation of the fastening clamp with slow heating oil, dredge the no-load operation or repair。
河北11选5开奖结果Fault 7: oil temperature overheating
Reasons: the internal leakage is too large, excessive pressure, continuous long working time, high ambient temperature (Xia Tian)
Troubleshooting: the maintenance of the pressure adjusting element breaks down after cooling work.
Fault 8: oil cylinder, motor movement is uneven, there is a climbing phenomenon
There are reasons: the air load is significantly after compression in the hydraulic system, so that movement is not uniform. The lack of lubrication between the friction surface. The gap between the moving parts and components is too small, or the movement of working parts deformation.
Troubleshooting: 1 will add enough oil tank and the oil cylinder are respectively high speed full stroke reciprocating motion several times. We often add butter lubrication. The check and adjust the moving parts of the gap of moderate elasticity.
Failure 9: slow leg movement, failure or even movement
Reasons: the relief valve failure or low pressure. The cylinder oil seal damage and reduce the cylinder volume efficiency, pump displacement, valve failure or serious leakage. The bidirectional hydraulic lock in the spool and the valve seat conical contact line between the foreign body or a scar. The air cylinder.
Troubleshooting: the repair, replacement or regulator. The replacement of oil seal, oil pump displacement, the throttle is not increased, increasing the engine speed, reversing valve failure, light repair, heavy change. The weight is open for cleaning, replacement, light re spotting the reciprocating motion of a few times, the exclusion of air.
Fault 10: the turntable can't move
Reasons: the overflow of the overflow valve pressure is too low or completely failed the pump or the motor is rotating pinion and gear meshing is the circular worm gear reducer is the valve failure
Troubleshooting: 1 or adjust the maintenance or repair or replace it according to the provisions of the adjustment or correction or replacement of the repair or replacement
Fault 11: the working arm does not rise
Reasons: the overflow of the overflow valve, low pressure pipeline plugging, oil cylinder is the serious leakage of the valve.
Method: the pressure regulating the piecewise check, in addition to the stolen goods, turn the mechanism of manipulation, loosen one by one to see whether the oil pipe joint injection, can detect the specific location of the pipeline is blocked。 According to the maintenance or replacement of oil seal replacement
Fault 12: the working arm does not fall
Reasons: the control of pressure balance valve in the pipeline jam is too high, the oil valve failure.
Method: the adjustment of pressure balance valve according to the working arm does not exclude the rise of repair or replacement
Fault 13: there is a vibration when the arm is falling
Reasons: the cylinder with the air valve to adjust properly the speed limit
Method: by the method of eliminating air re adjust maintenance
Fault 14: the variable amplitude cylinder can not be locked
Reasons: the balance valve and valve seat conical seal cover scratches or foreign body the balance valve spring fracture stuck the joint leakage of the cylinder leakage
Troubleshooting: 1 for the change of the fastening the repair or replace or repair or repair
Fault 15: oil cylinder piston rod protruding oil leakage
Reasons: the seal ring damage the piston rod scratches
Troubleshooting: to replace the seal and repair or replacement, removal of foreign body.
Fault 16: insufficient flow
Reasons: the engine speed is too low and the serious wear of pump
Troubleshooting: the proper acceleration, change or repair