The importance of excavator hydraulic system

Hydraulic system is an important part of construction machinery. The hydraulic system has the advantages of small volume, light weight, easy installation, high power density, fast response, strong controllability, stable operation and wide range of stepless speed regulation. It is widely used. Hydraulic excavator is a kind of construction machinery which is widely used in engineering construction at present. Its walking, turning, lifting and digging actions are realized by converting mechanical energy into hydraulic oil pressure energy by engine to drive hydraulic cylinder and motor. For the hydraulic system, although it is only a subsystem of the excavator complex main system, its impact on the function and efficiency of the main system is huge. The failure of the hydraulic system will directly lead to the failure of the main system, resulting in serious economic losses. Therefore, the analysis and fault diagnosis of hydraulic excavator hydraulic system is particularly important.