Drive device side plate welding tool for escalator

The utility model discloses a drive device side plate welding tool for an escalator. The welding tool comprises two side racks and a base arranged between the two side racks, wherein one end of the base is mounted on one side rack through a connecting shaft, and the other end of the base is connected to a cycloid aciculiform wheel speed reduction motor; the cycloid aciculiform wheel speed reduction motor is mounted on the other side rack; welding positioning guide pillars corresponding to the inner plates of side plates, support pillars corresponding to the frames of the side plates, fixing press plates corresponding to the support pillars, a vertical jacking mechanism and hydraulic lifting pillars are arranged on the base at intervals; the welding positioning guide pillars, the hydraulic lifting pillars and the support pillars are all positioned on the bottom side of a workpiece; the fixing press plates are clamped on the top side of the workpiece. According to the utility model, the base can rotate at 360 d