Because the hydraulic rock breaker is a fast reciprocating impact movement, the oil return speed is fast and the relative pulse is large, which causes the aging of the hydraulic oil to accelerate. Therefore, it is necessary to maintain the excavator properly and use it properly, which can effectively extend the service life of the hydraulic system.
Use a high quality hydraulic rock breaker (with accumulator)
Poor quality hydraulic breaker is prone to problems in design, manufacture, inspection and other procedures. It is easy to damage the excavator due to its high failure rate in use.
Adequate engine speed (average acceleration)
Due to the lower requirement of hydraulic rock breaker on working pressure and oil flow (such as 20 ton excavator, working pressure 170-210KG, oil flow 120-180L/MIN), l ‘medium throttle can work. If the excavator is stepped on, it will not only increase the impact resistance, but also cause the hydraulic oil temperature to rise abnormally, which will also cause great damage to the hydraulic system.
Correct position of the butter, frequency, amount
Be sure to add lubricating grease every 2 hours in chisel condition, the grease will enter the cylinder. Abnormal high pressure oil will enter the hydraulic system and damage the hydraulic pump during the stroke.
Hydraulic oil flow and contamination
Since hydraulic oil contamination is one of the main reasons leading to the failure of hydraulic pumps, it is necessary to confirm the hydraulic oil contamination status in time (hydraulic oil replacement every 600 hours and pistil core replacement every 100 hours). ) The lack of hydraulic oil will cause a cavitation phenomenon, which will result in the failure of the hydraulic pump, scratching the piston and cylinder of the hydraulic breaker, etc.
Recommendation: Check the oil level before use.
Replace the oil seal in time
The oil seal is a vulnerable part. it is suggested that the oil seal should be replaced once to work 600-800 hours of the hydraulic breaker. When the oil seal leaks. The hydraulic breakers must be stopped immediately and the oil seal replaced. Otherwise, dust will easily enter the hydraulic system and damage the hydraulic system and hydraulic pump.
Keep the pipeline clean
Before installing the hydraulic breaker pipe, it must be thoroughly cleaned and circularly coupled with the inlet and outlet pipelines. When replacing the bucket, the hydraulic breaker pipe must be blocked to keep the pipe clean. Or, sand and other impurities can easily damage the hydraulic pump if they enter the hydraulic system.
Preheat the hydraulic system before use
Because the use of hydraulic oil from the upper part will flow to the lower part when the hydraulic breaker is parked, it is suggested that a small throttle should be used to operate every day when the breaker is first used hydraulic breaker After the oil film is formed on the piston block of the hydraulic breaker, the middle accelerator must be used to return to operation, which can make the hydraulic system of the excavator work.
Install the filter element
The hydraulic breaker used in demolition breaks down more often on the main pump than mine. When the hydraulic breaker is used for demolition, dust easily enters the cylinder together with the chisel, which causes the contamination and rapid aging of the hydraulic oil. Therefore, it is recommended to install the filter element in the return oil circuit.
Avoid shooting blanks
Blank firing will not only cause the oil temperature to rise, but also cause abnormal vibration, which will cause impurities to enter the cylinder, so blank firing is strictly prohibited. It is recommended to choose the anti-coke hydraulic breakers in white.
Unload when not in use
When the hydraulic breaker is stored for a long time, the chisel should be unloaded first, and the nitrogen gas should be released in the rear head to make the piston from top to bottom, to prevent the exposed rust or scratch and then damage the main engine pump.
