Loader is a kind of earthwork construction machinery widely used in roads, railways, construction, hydropower, ports, mines and other construction projects. It is mainly used for shoveling bulk materials such as soil, sand, lime, and coal, and can also be used for ore , Hard soil, etc. for light shoveling and digging operations. Different auxiliary working devices can also be used for bulldozing, lifting and other materials such as wood loading and unloading operations.

In road construction, especially in the construction of high-grade highways, loaders are used for filling and excavating roadbed works, asphalt mixtures and aggregate and loading of cement concrete yards. In addition, it can also carry out operations such as pushing and transporting the soil, leveling the ground, and towing other machinery. Because the loader has the advantages of fast working speed, high efficiency, good maneuverability, and light operation, it has become one of the main types of earth and stone construction in engineering construction.