Cantilever outer frame fixing device

The utility model provides a cantilever outer frame fixing device, and belongs to the technical field of building construction. The device comprises a wall body and a fixing frame, the fixing frame is of a triangular structure, a connecting bolt is arranged on one side of the fixing frame and fixedly connected with the wall body, a controller is arranged at the bottom of the fixing frame, a supporting plate is arranged above the fixing frame, clamping plates are symmetrically arranged at the top of the supporting plate, and a screw rod is arranged between the clamping plates; wherein a driving motor is arranged on one side of one set of clamping plates, the output end of the driving motor is fixedly connected with one end of a screw rod, two sets of first sliding blocks are symmetrically arranged on the outer side of the screw rod, threads matched with the screw rod are arranged on the first sliding blocks, the bottoms of the first sliding blocks make sliding contact with the top of the supporting plate, and