Welding device for electromechanical installation

The utility model relates to the technical field of mechanical and electrical installation welding, and discloses a welding device for mechanical and electrical installation, which comprises a working table, a support arranged at the top of the working table and a welding mechanism arranged at the bottom of the support, a heating plate and two supporting plates are arranged at the top of the working table, and the heating plate is arranged between the two supporting plates. Fixing mechanisms are installed on the opposite sides of the two supporting plates correspondingly, moving channels are formed between the heating plate and the two fixing mechanisms correspondingly, two pushing mechanisms are installed on the top of the workbench, and the pushing mechanisms are located in the moving channels and push a steel plate to move in the moving channels. The welding position of the two steel plates can be preheated before welding through the arranged heating plate, so that after welding is completed, the cooling s