Any action of the excavator cannot be done without the tacit cooperation of the boom and jib. Therefore, whether the boom is weak, stuck or the support action is abnormal, the construction effect and efficiency will be greatly reduced. Let's take a look at the causes of the fault?
Cause of failure:
1. The excavator is composed of working device, upper turntable and traveling mechanism. According to its structure and use, it can be divided into crawler type, tire type, walking type, full hydraulic, semi hydraulic, full rotary, non full rotary, general-purpose, special-purpose, articulated, telescopic boom and other types.
2. Leakage of oil circuit, seal failure, poor assembly, loose pipe joint, deterioration of sealing ring, etc.
3. The boom slide valve and oil cylinder of the excavator are internally leaking, resulting in the slow and weak action of the boom of the excavator.
4. Boom cylinder is leaking.
5. There is a problem with the boom spool valve Excavator repair is the market leader of large hydraulic excavator Through the unremitting pursuit of quality and the principle of excellent engineering machinery, we have manufactured machines with high strength and long service life to meet the requirements of users in various operations in the mining industry.
Troubleshooting:
1. First of all, it is necessary to know whether the excavator boom is slow and weak due to the blockage of the excavator oil circuit. You can remove the excavator boom slide valve body, valve rod and some related components for cleaning. After cleaning, clean the excavator oil duct and dry it and install it in combination. Check whether the excavator boom is slow and weak? If it does not exist, the cause of the fault is that the excavator oil circuit is blocked Excavator maintenance with the start of a large number of major engineering projects, construction machinery has increased and improved by leaps and bounds both in quantity and quality As the main equipment of mechanized construction, excavator has become an indispensable engineering machinery in earthwork construction. It is a typical electromechanical high-tech product.
2. To check the oil circuit leakage of the excavator, check whether the oil temperature of the excavator is very high, whether the joints of the oil pipe are loose, whether the oil is polluted and deteriorated, whether there is poor assembly, etc.
3. The phenomenon of slow and weak action of the excavator boom caused by leakage in the boom spool valve and oil cylinder can only be detected with the help of some auxiliary methods.
4. Check the boom oil cylinder. Remove the oil pipe without rod chamber of the excavator to continue flushing the boom oil cylinder. If there is working oil leakage, the hydraulic cylinder of the excavator has internal leakage.
