Loader is a kind of earthwork construction machinery widely used in highway, railroad, construction, hydropower, port, mine and other construction projects, it is mainly used for shoveling soil, gravel, lime, coal and other bulk materials, but also for ore, hard soil, such as light shoveling and digging operations. It can also be used for light shoveling and digging of ores and hard soil, etc. It can also be used for bulldozing, lifting and loading and unloading of other materials such as timber by replacing different auxiliary devices.