Positioning tool for welding wind power tower drum

The utility model discloses a positioning tool for welding a wind power tower, which belongs to the technical field of positioning equipment and comprises a supporting plate, two sliding grooves are arranged on two sides of the top of the supporting plate, sliding blocks are slidably mounted in the sliding grooves, adjusting columns are fixedly mounted at the tops of the sliding blocks, and the adjusting columns are fixedly mounted on the top of the supporting plate. A limiting rod is fixedly mounted at the top of the moving rod; two two-way bolts are rotatably installed in the supporting plate, the four sliding blocks are connected to the outer sides of the corresponding two-way bolts in a threaded and sleeved mode respectively, vertical holes are formed in the front side and the rear side of the top of the supporting plate, vertical connecting rods are slidably installed in the vertical holes, and horizontal connecting rods are fixedly connected to the tops of the vertical connecting rods. The double-end st