Belt type grinding machine for grinding electric arc welding position

The utility model discloses a belt type grinding machine for grinding an electric arc welding position, a grinding machine is fixed on a working table, the grinding machine comprises a motor, a rolling shaft, a grinding belt, a grinding cover and a supporting frame, the motor is connected with the rolling shaft, the grinding belt is sleeved on the rolling shaft and a rolling body of the supporting frame, the grinding cover is of a half-wrapping type box body structure, and the supporting frame is connected with the grinding belt. The rolling shaft and 1/3 part of the grinding belt are positioned in the box body of the grinding cover, and the grinding belt comprises a thick belt on the left side and a thin belt on the right side. By adopting the mode that the motor drives the grinding belt, grinding can be conducted at a constant speed, the grinding belt is divided into a thick belt and a thin belt, grinding with different precision requirements can be conducted at the same time, the grinding cover covers the