A conveyor is a handling machine, which transports material on certain lines. Conveyors can deliver horizontally, incline and vertically, they can also form a team and conveying in a certain height. Conveying of single conveyor or more conveyors or one conveyor with other handling equipment to form a horizontal or inclined transport system are all realizable, in order to meet different operation needs. They can handle materials continuously and have large conveying capacity. The structure is simple and the operation is brisk.