Single-machine single-hook turning-over device and method for cutter head of large shield tunneling machine

The invention relates to the technical field of shield tunneling machine cutterhead turning-over devices, and discloses a large shield tunneling machine cutterhead single-machine single-hook turning-over device which comprises a base and a balancing weight. The upper surface of the base is fixedly connected with a rack, the back face of the rack is fixedly connected with a first electric push rod, and the output end of the first electric push rod is fixedly connected with a supporting frame; the adjusting mechanism comprises a mounting frame, a sliding groove is formed in the surface of the mounting frame, sliding blocks are slidably connected to the interiors of the left side and the right side of the sliding groove, and connecting rods are fixedly connected to the side faces of the sliding blocks and can move up and down under the action of lifting lead screws through connecting plates; a connecting plate can drive a cutter clamped in a mounting plate to turn over in the ascending process and keep horizonta