Mini Excavator is a kind of mechanical equipment used to excavate soil, rock and other materials, which plays an irreplaceable role in engineering construction. At present, small excavators used in projects are basically composed of the following parts: power device, transmission mechanism, slewing mechanism, traveling mechanism, control mechanism and auxiliary equipment. Next, summarize the common problems and causes of small excavators:
1. Engine overload
The engine is the driving device of the small excavator. In case of overload failure, the speed of the engine of the small excavator will decrease under load, which may lead to engine stalling in serious cases. The main reasons for such failures are as follows: First, environmental factors, such as excessive external temperature (generally more than 35 ℃), are likely to cause engine overload; Second, the engine itself; The third is the hydraulic system.
2. Abnormal working speed
The abnormal working speed referred to here is mainly due to the slow down of the speed. The reasons for this kind of failure are as follows: First, the
Mini Digger works for a long time, resulting in the wear of the whole machine; Second, the circuit is short circuited or the servo control valve is faulty; Third, the hydraulic pump failed.
3. Weak excavation
This kind of failure is one of the common and typical failures of mini excavators. It can be divided into two situations: one is that the engine holds up when the boom reaches the bottom; The other is that the engine does not hold the car, but the load is light. Engine hold up may be caused by abnormal absorption torque of oil pump; It may be that the overflow pressure of the system is insufficient.
Common problems and causes of Crawler excavators excavator introduced above.
