Maintenance of eight methods of excavator hydraulic pump
Due to the impact of the hammer is reciprocating fast movement, oil return speed is fast and relatively large pulse, cause the hydraulic oil aging faster, so you need to correct for excavator maintenance, improper use, can effectively extend the service life of the hydraulic system.
1, use the high quality of broken hammer (
With the accumulator
Analysis: inferior hammer because of design, fabrication, inspection and other links are prone to problems, using the high failure rate, more likely to cause damage of excavator.
2, appropriate engine speed (
Analysis: because of the broken hammer requirements for working pressure and flow rate is low,
Such as excavator, 20 ton 160 - work pressure
The 140-180 kg, flow
, and work medium gas;
If down work not only improve the crackdown will cause abnormal hydraulic oil temperature, the hydraulic system will be hurt.
3, right, beat the butter posture, frequency, quantity, be sure to in steel pressure straight state added grease, filling every 2 hours.
Analysis: if steel hung up in a state of lubricating grease, oil and grease will enter combat indoor, strikes against the interior can produce abnormal high pressure oil into the hydraulic system, damage the hydraulic pump.
4, hydraulic oil and pollution condition analysis: hydraulic pump failure due to the hydraulic oil pollution is one of the main reasons, so should confirm the hydraulic oil pollution condition in time.
Replace the hydraulic oil 600 hours, 100 hours) core replacement
Hydraulic oil lack will produce cavitation phenomenon caused by hydraulic pump fault, broken hammer piston cylinder body injury, etc. ;
Advice: check the oil level before using every day.
5, in a timely manner to replace oil seal analysis: oil seal belong to wearing parts, suggest hammer work - 600
800 hours, to replace a broken hammer oil seal;
Must immediately stop work when the oil seal leakage, and replace the oil seal, no dust easily into the hydraulic system, hydraulic system damage, damage to the hydraulic pump.
6, keep clean install hammer pipe lines must be cleaned thoroughly, and on into the oil circulation and docking.
Replace the bucket, must be broken hammer pipe plug, keep the line clean.
Analysis: the sand and other debris into the easy damage after hydraulic pump in the hydraulic system.
7, broken hammer before use to deal with the hydraulic system for preheating analysis: because of broken hammer in the park, the upper of the hydraulic oil will flow to the bottom, suggest a day at the beginning when used with a small throttle to operate, such as broken hammer piston cylinder oil film formation, using the medium throttle to operate, can protect the excavator hydraulic system.
8, demolition hammer than mine broken hammer, used by the host large pump damage more often.
Analysis: because of the dust easily along the steel into the hammer cylinder, cause the pollution of hydraulic oil and rapidly aging, Suggestions on back to the oil return oil filter.