Vertical mill grinding roller on-line surfacing welding device capable of preventing bearing in grinding roller device from sparking

The utility model discloses a vertical mill grinding roller on-line surfacing device for preventing a bearing in a grinding roller device from sparking, which comprises a clamping assembly, a conductive slip ring assembly, a driving assembly and an automatic welder, the clamping assembly comprises a fixed disc, the inner surface of the fixed disc is fixedly connected with a connecting slide block, the surface of the connecting slide block is slidably connected with calipers, and the surface of the connecting slide block is fixedly connected with the conductive slip ring assembly. And the inner surface of the fixing disc is rotationally connected with a rotating block, and the surface of the rotating block is rotationally connected with a plurality of connecting rods. According to the vertical mill grinding roller online surfacing welding device capable of preventing the bearing in the grinding roller device from sparking, the driving assembly is arranged on the back of the clamping assembly, so that the drivi