Chain conveyor line, also known as chain line, is a common assembly line conveying equipment mainly used for conveying materials on industrial production lines. Chain conveyor lines are usually composed of one or more parallel chains, each of which is usually connected to one or more tooling plates for carrying materials. The main working principle of a chain conveyor is that the motor on the driving frame drives the conveying force through the chain transmission, which drives the conveying chains on both sides through the transmission shaft. The conveying chains walk along the chain guide rails, thereby driving the trays or other conveying materials on the chain to run. Install chain tensioning devices on both sides of the drive frame to adjust the tightness of the chains on both sides. Chain conveyor lines have a wide range of applications and can be used for the transportation of various materials, such as coal, ore, cement, fertilizers, grains, etc. In the field of industrial production, chain conveyor lines are widely used for the transportation of various materials, such as coal transportation and storage, cement transportation and storage, fertilizer transportation and storage, and grain transportation and storage.