Bridge crane positioning device

The utility model discloses a bridge crane positioning device, which relates to the technical field of bridge cranes and comprises a main beam, a side beam is fixed on one side of the main beam, servo motors are fixed on the side beam close to the main beam and at the two ends of the main beam, transmission shafts are fixed at the output ends of the servo motors, and the transmission shafts are fixed on the main beam. The ends, away from the servo motor, of the transmission shafts are rotationally connected with the side beams in a penetrating mode, and pulleys are fixed to the ends, penetrating through the side beams, of the transmission shafts. The push rod motor works to drive the toothed plate on one side of the push plate to be inserted between the clamping teeth at the matched positions, the main beam and the side beam can be positioned through meshing of the clamping teeth and the toothed plate, inertia and shaking can be counteracted, and damage to equipment and large-amplitude shaking of a hoisted ob