EN
CLASSIFICATION OF COMMON FAULT TYPES
In daily construction, the "excavator hydraulic crushing bucket system" may have the following typical faults:
◆ Weakened striking force or no striking response
◆ Abnormal vibration or noise during operation
◆ Abnormal increase in hydraulic oil temperature
◆ Slow or asynchronous action of the oil cylinder
◆ Oil leakage at the attachment connection
The above problems are mostly related to "insufficient pressure of the hydraulic system crushing bucket" or "clogged oil circuit of the crushing bucket", and need to be analyzed item by item in combination with the usage status.
FAULT DIAGNOSIS PROCESS
1. Preliminary investigation
The operator can make a preliminary diagnosis through the "Pre-operation inspection process of hydraulic crushing bucket", including:
◆ Check whether the hydraulic oil level is sufficient and whether the oil is clean;
◆ Check whether the oil pipe connection is firm and whether there is oil leakage;
◆ Test whether the control valve operates normally and whether there is stagnation or slow response.
2. System test
When the preliminary inspection cannot solve the problem, the pressure tester can be used to perform "hydraulic crushing bucket system pressure test". If the system pressure is lower than the rated parameters of the equipment, check whether the pipeline between the main control valve and the impactor is leaking, blocked or the joint is loose.
3. Impact system analysis
If there is a phenomenon of "the hammer head of the crushing bucket does not move" or "intermittent impact", further inspection should be carried out:
◆ Whether the valve body inside the impactor is stuck;
◆ Whether the piston and seal are severely worn;
◆ Whether the pressure regulating valve fails.
MAINTENANCE OPERATION STANDARDS
For the specific problems diagnosed, the following maintenance standards are formulated:
1. Hydraulic system maintenance
◆ Replace the "hydraulic crushing bucket high-pressure oil pipe assembly" and use original accessories to ensure the interface standard;
◆ Clean or replace the hydraulic filter to prevent impurities from entering the system;
◆ Calibrate the pressure valve setting value to ensure that it reaches the "hydraulic crushing bucket rated impact pressure".
2. Overhaul of the impact device
◆ Disassemble the impactor for internal cleaning, focusing on the piston, guide sleeve and buffer pad;
◆ Replace the "crushing bucket piston seal" with severe wear to ensure sealing performance;
◆ Apply high-temperature grease to key friction parts to extend the service life of the impactor.
3. Electronic control and manipulation system
◆ Check whether the solenoid valve and connecting wire related to the "excavator hydraulic crushing bucket control circuit" are normal;
◆ If there is abnormal feedback or delay, the control module and related sensing devices should be checked.
MAINTENANCE RECOMMENDATIONS AND FAULT PREVENTION
To prevent frequent faults, it is recommended to perform the following maintenance measures:
◆ Check the "wear of the hydraulic breaker bucket connection pin" after daily operation and add grease in time;
◆ Check the system pressure and oil temperature once a week, especially in high-intensity construction environments;
◆ Replace the hydraulic oil and filter element every 500 hours and implement the "comprehensive maintenance plan for the hydraulic breaker bucket system".
Through standardized diagnosis and maintenance processes, not only can the "service life of the excavator hydraulic breaker bucket" be improved, but also the construction downtime can be effectively reduced. It is recommended that construction units be equipped with professional technicians and strictly follow the maintenance specifications according to the process to ensure the continuous and efficient operation of the attachment system.
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