Variable-wheelbase bucket lug plate, bucket and engineering vehicle

The utility model discloses a variable-wheelbase bucket lug plate, a bucket and an engineering vehicle. The variable-wheelbase bucket lug plate comprises a lug plate part A and a lug plate part B. A gap is formed between the side faces of the lug plate part A and the lug plate part B, and a gap is also formed between the tail ends of the lug plate part A and the lug plate part B; one end of the middle connecting section is fixedly connected with the tail end of the lug plate part B, and the other end of the middle connecting section is fixedly connected with the tail end of the lug plate part A by bending across the side surface interval, so that the lug plate part A, the lug plate part B and the middle connecting section are connected into a whole; the lug plate A part and the lug plate B part have no sharp tail ends, stress concentration of individuals is avoided during welding, meanwhile, when the whole of the lug plate A part, the lug plate B part and the middle connecting section is welded to the bucket,