Centering structure and method for couplings with brake wheels

The invention discloses a centering structure and method for couplings with a brake wheels. The centering structure comprises the first coupling with the brake wheel, the second coupling with the brake wheel and a centering measuring block. The height of the centering measuring block is lower than both the distance between a first coupling part and a first brake wheel part on the first coupling with the brake wheel and the distance between a second coupling part and a second brake wheel part on the second coupling with the brake wheel; the centering measuring block is attached to the first coupling part and can perform position adjustment around the circumferential surface of the first coupling part; and the centering measuring block is provided with an abutting rod, and the centering measuring block can drive the abutting rod to fit to the first coupler part and move in the direction of the second coupling part. According to the invention, the position of the two moving intersection points of the two couplin