The assembly line equipment continuously transports the cargo handling machinery on a certain line, also called a conveyor line or a conveyor. According to the transmission series, it can be roughly divided into seven categories: belt line, plate chain line, multiple chain line, plug-in line, mesh belt line, suspension line and drum line. Generally include traction members, load bearing members, drive devices, tensioning devices, redirecting devices, and support members. Conveyors can be transported horizontally, inclinedly and vertically, or they can be made up of space transport lines, which are generally fixed. Pipeline transport capacity, long distance, but also in the process of transport to complete a number of process operations, so the application is very extensive.