As a large-scale machine, excavators are very suitable for engineering operations. However, due to the different levels of excavator masters, many drivers do not understand some repairs and maintenance of excavators, which often leads to some problems and failures in excavators. .
There are often some sudden failures in the use of the excavator. Only when the cause of the failure is found out and the maintenance skills are familiar can the problem be found and smoothly eliminated. In fact, many of these sudden failures are caused by the hydraulic cylinder of the hydraulic system of the excavator. Because hydraulic technology also has oil leakage, the change of oil temperature affects the control of operating speed, noise and other problems. I want to make hydraulic excavation safer and more efficient. For machine operation, the key to the work is to correctly select hydraulic oil according to the system pressure, operating speed, working oil volume, and ambient temperature, use and maintain it reasonably, maintain the excellent working performance of the oil for a long time, and exert the best working efficiency.
To maintain and maintain the hydraulic oil cylinder, it is necessary to prevent contamination and impurities from being mixed into the hydraulic oil:
1. Protect the surface of the piston rod to avoid damage to the seals caused by bumps and scratches. Frequently clean up the dust on the cylinder seal and the exposed piston rod to avoid dirt that is not easy to clean up on the surface of the piston rod. Objects enter the cylinder and damage the piston, cylinder or seal.
2. Frequently check the connections of the threads, bolts, etc., and tighten them immediately if they are loose.
3. Lubricate the connecting parts frequently to prevent rust or abnormal wear in an oil-free state.
4. The hydraulic oil should be replaced regularly during the use of the cylinder, and the filter screen of the system should be cleaned to ensure cleanliness and prolong the service life.
5. Each time the oil cylinder is used, it must be fully extended and fully retracted for 5 strokes and then run with load. Doing so can exhaust the air in the system, and can effectively avoid the presence of air or water in the system, and the occurrence of gas explosion (or scorch) phenomenon, because this will damage the seals and cause failures such as leakage in the oil cylinder.
6. Control the system temperature. Excessive oil temperature will reduce the service life of the seals. Long-term high oil temperature will cause permanent deformation of the seals, or even complete failure.
As a part of the hydraulic system, the hydraulic cylinder affects the operation of the hydraulic system, and the hydraulic system is an important part of the excavator operation. If the excavator is to work normally without failure, it is necessary to ensure that the hydraulic cylinder in the hydraulic system does not have problems. .
