Positioning welding structure for box cover and box edge of transformer

The utility model relates to a transformer box cover and box edge positioning welding structure, and belongs to the technical field of transformers. According to the technical scheme, the box comprises a box cover (1), a box edge (2), positioning square steel (3) and a sealing washer (4), the positioning square steel (3) is arranged on the lower surface of the box cover (1), a first rectangular groove and a second rectangular groove are formed in the upper surface of the box edge (2), and the positioning square steel (3) and the sealing washer (4) are matched with the first rectangular groove and the second rectangular groove respectively. The positioning square steel (3) and the sealing washer (4) are arranged in the first rectangular groove and the second rectangular groove respectively, and the outer side of the box cover (1) and the outer side of the box edge (2) are welded. The utility model has the beneficial effects that the structure is simple, the positioning effect is obvious, only the box cover and