Belt conveyor, also known as belt conveyor, is a kind of continuous transportation machinery, but also a kind of general machinery. Belt conveyor is widely used in ports, power plants, iron and steel enterprises, cement, grain and light industry production lines. That is to say, bulk materials can be transported, or items can be transported. The noise is small and the structure is simple. Belt conveyor can be used for horizontal or inclined transportation. The belt conveyor is also applied to continuous transportation mobile machines such as loaders, unloaders, stackers and reclaimers. The belt conveyor is composed of belt, frame, driving roller, steering roller, bearing spoke, return roller, tensioning device, cleaner and other parts. In large ports or metallurgical enterprises, belt conveyor is widely used. Its total length can reach more than ten kilometers.