Loader can be divided into: power system, mechanical system, hydraulic system, control system. As an organic whole, the performance of the loader is not only related to the performance of the mechanical parts of the working device, but also related to the performance of the hydraulic system and control system. Power system: the primary power of the loader is generally provided by the diesel engine. The diesel engine has the characteristics of reliable operation, hard power characteristic curve, fuel economy and so on, which meets the requirements of the bad working conditions of the loader and variable load.
Mechanical system: mainly includes walking device, steering mechanism and working device. Hydraulic system: the function of the system is the engine mechanical energy to fuel as the medium, the use of oil pump into hydraulic energy, and then transfer to the cylinder, oil motor, etc., into mechanical energy. Control system: the control system is the engine, hydraulic pump, multiple directional valve and actuator control system. Hydraulic control driving mechanism is in the hydraulic control system, the small power of electric energy or mechanical energy into a strong power of hydraulic and mechanical energy device. It is composed of hydraulic power amplifier element, hydraulic actuator element and load, and is the core of static and dynamic analysis in hydraulic system.