Definition of loader:The loader is a widely used in earthwork construction machinery construction, highway, railway, electricity, ports, mines and other construction projects, it is mainly used for shovel of soil, sand, lime, coal and other bulk materials, can also be used as a mild shovel of ore and hard soil digging etc.. Different auxiliary working equipment can be changed, and the lifting, lifting and other materials such as wood handling can also be carried out. In the road, especially in the construction of high-grade highways, loaders are used for filling and excavating of subgrade engineering, aggregate and loading of asphalt mixture and cement concrete field. In addition, the soil can be pushed, flat ground and other mechanical traction operations. As the loader has the advantages of fast operation, high efficiency, good maneuverability and easy operation, it has become one of the main types of earthwork construction in the construction of the project.Two. Main components:Including engine, torque converter, transmission box, front and rear drive axle, referred to as four pieces;1. engines;2. there are three converter pump, the pump (supply lift bucket pressure oil) steering pump (variable speed pump oil supplies to pressure) also known as walking pump (supply torque converter, transmission pressure oil), some models of steering pump is also equipped with a pilot pump (supply control valve pilot pressure oil);3.. Working hydraulic circuit, hydraulic tank, working pump, multiway valve, lifting cylinder and tipping bucket cylinder;4., walking oil: transmission oil, sump oil, walking pump, one-way torque converter, all the way into gear valve, transmission clutch;5. drive: drive shaft, main differential, wheel side reducer;6. steering circuit: fuel tank, steering pump, steady flow valve (or priority valve), steering gear, steering cylinder;The 7. gearbox has one (planetary) and a split (fixed shaft) two.
