CRANE COUNTERWEIGHT BLOCK ALIGNMENT DETECTION AND CONTROL METHOD AND DEVICE, AND CRANE

A crane counterweight block (10) alignment detection and control method, crane counterweight block (10) alignment detection and control device, and a crane. The crane counterweight block (10) alignment detection and control method comprise: a counterweight block (10) being provided with mounting holes (K1, K2) for matching with positioning pins (B1, B2) on a crane, detecting the center position of the counterweight block (10), and calculating the relative offset between the center position and the position of the positioning pins (B1, B2); detecting the relative positions of the mounting holes (K1, K2) in the counterweight block (10) and the positioning pins (B1, B2), and calculating, according to the positions, a relative rotation angle of the counterweight block (10) for aligning the mounting holes (K1, K2) with the positioning pins (B1, B2); and controlling, according to the relative offset and relative rotation angle, the movement of the counterweight block (10) to enable the mounting holes (K1, K2) in th