Problems and countermeasures of the breaker installed on the excavator

2021-05-10

Equippedhydraulic hammerNo matter whether the breaker is working or not, other equipment of the excavator can still work normally. The main hydraulic reversing valve of the system is usually selected from the self-operated regulating valve in the main work of the excavator. The buried preparatory valve, the load oil for the breaker is produced by a main pump of the excavator, and the pressure of the breaker is changed according to the modified speed regulating valve; the high-pressure shut-off valve must be modified at the entrance and exit of the breaker, and the excavator needs to be repaired for maintenance. It is conducive to the change and maintenance of the main parameters of the system during work. Common problems and solutions after the hydraulic hammer is installed on the excavator:

Wrong operation, N2 leakage of the breaker, unscientific maintenance, etc., will all lead to problems such as valve damage, pipeline cracking, and excessive temperature of the gear oil during the work of the breaker. In the final analysis, one is unscientific technical equipment, and the other is construction On-site management is unscientific.

The pressure of the breaker is usually 20MPa, the total flow is about 170L\/min, while the system burden of the excavator is usually 30MPa, and the total flow of the single main pump is 250L\/min, so the speed control valve has to undertake the complicated separation and pressure relief work. Medium. If the speed regulating valve is damaged but not easy to be detected, the breaker is working under high pressure. First, the pipeline cracks, the temperature of the gear oil is too high, and the main hydraulic reversing valve is seriously damaged. The hydraulic circuit controlled by the other spools of the self-operated regulating valve in the main work (the next spool deflected by the main oil passage in the case of negative correlation) is destroyed.