Balancing and limiting device for hoisting side door type frame cross beam

The utility model discloses a balance limiting device for hoisting a side door type frame cross beam, which relates to the technical field of hoisting of side door type frame cross beams and comprises a fixing ring and a counterweight component. A base plate is fixed at the lower end in the fixing ring; the counterweight assembly comprises fixing frames, balancing weights, threaded rods and a first motor, the four corresponding fixing frames are fixed to the circumferential face of the fixing ring, the balancing weights are slidably connected into the fixing frames, threaded holes are formed in the middles of the balancing weights, the threaded rods are in threaded connection with the interiors of the threaded holes, and the first motor is in threaded connection with the threaded rods. Four corresponding first motors are installed in the fixing ring, output shafts of the first motors are fixed to the end face of the threaded rod, the input ends of the first motors are electrically connected with the output en