The chain turnover machine is mainly used for welding and assembling long strip shaped components. The workpiece can be lifted and placed on the chain of the chain turnover machine, allowing for 360 ° rotation and lifting and lowering of the workpiece. Therefore, during the welding process, the longitudinal weld seam can be quickly shifted and converted into flat welding, making the heavy welding work more humane, reducing the labor intensity of workers, making the welding site safer and more standardized, thereby ensuring the quality of the weld seam, improving welding efficiency, and ensuring employee safety.