The production line composed of double speed chain line is usually called: self-flow conveying system double speed chain conveyor, mainly used for assembly and processing production line in the material transport, the transmission principle is the use of double speed chain growth function, so that the cargo bearing on the tooling plate to run quickly, through the stopper stop in the corresponding operating position; Or through the corresponding instructions to complete the accumulation action and shift, transpose, turn the line and other functions.

Because the platform of the machine to transport goods needs to be used repeatedly, it is rarely used single, but with a variety of special aircraft such as the top lift flat shift machine, the top lift shift machine and other supporting horizontal or vertical circulation system. It uses a special, surface treated extruded aluminum alloy profile as a guide rail, so that the self-flow conveying system has very good stability and durability in the conveying process, suitable for large-scale continuous production of products. At the same time, the flexible and diversified design of the self-flow conveying system makes it have multi-functional characteristics.