Automatic repair welding device for spiral welding pipe

The automatic repair welding device comprises a device platform and a welding box, the welding box is fixedly assembled in the middle of the top of the device platform, a controller is fixedly assembled on the top of the front side wall of the welding box, and an observation window is fixedly assembled on the front side wall of the welding box and located at the bottom of the controller. The whole device can move through the universal wheels at the bottom so as to cope with different production environments, a welded pipe is placed at the top of the welded pipe containing groove, the welded pipe is inserted into the welding box after the lifting door is lifted, control can be conducted through a controller, and in order to facilitate follow-up maintenance, the device is convenient to use. A maintenance door spiral welded pipe is arranged on the back of the welding box, and rotary welding is achieved through rotation of two sets of rotating rods. A smoke purifier and a welding recovery system are assembled on