Carrying system for upgrading large equipment on offshore platform

The utility model discloses a carrying system for upgrading large equipment on an offshore platform. The carrying system comprises a lifting device, a hoisting device, a first track beam and a first horizontal moving device horizontally moving on the first track beam, the first horizontal moving device is provided with a base used for bearing the lifting device and rolling wheels. A guide rail is arranged on the first track beam; the rollers are matched with the guide rails and advance along the guide rails; the lifting device comprises a top plate, two hydraulic cylinders and four guide columns; fixed seats of the hydraulic cylinder and the guide post are fixed on the base of the first horizontal moving device, and lifting ends of the hydraulic cylinder and the guide post are fixedly connected with the top plate; the hoisting device comprises a zipper for lifting a hoisted object; hoisting holes through which the zipper passes are formed in the centers of the top plate and the base; when the lifting end of t