High-frequency welding device for steel structure welding

The utility model is applicable to the related field of welding, and provides a high-frequency welding device for welding a steel structure, which comprises a working table and a support plate fixedly mounted on one side of the working table, a plurality of table legs and a transmission rod are fixedly mounted at the bottom of the working table, the transmission rod penetrates through the working table and is rotatably connected with the working table, and the table legs are fixedly mounted on the support plate. A transmission disc is fixedly installed on the transmission rod, five through holes are formed in the circumference of the eccentric position of the transmission disc, bearing pieces are rotatably installed at the bottoms of the five through holes, and the transmission rod is connected with an intermittent transmission structure installed at the bottom of the workbench. The second gear is matched with the first gear to drive the bearing piece and the pipe fittings to rotate, so that the welding wires