Large-tension tie-back device suitable for steel catenary riser of semi-submersible production platform

The large-tension tie-back device suitable for the semi-submersible production platform steel catenary riser comprises a connecting structure, the connecting structure is fixed to the side edge of a lifting module, the lifting module is of a multi-layer frame structure with a top layer and a bottom layer, and the top layer and the bottom layer are each provided with a main anchor machine guide hole and a plurality of auxiliary winch guide holes; a main anchor gear is fixed to the center of the top of the top layer of the lifting module, a built-in anchor chain of the main anchor gear sequentially and vertically penetrates through a main anchor gear guide hole in the top layer, a main anchor gear guide hole in the bottom layer and a main anchor gear guide wheel in the bottom layer direction, and the main anchor gear guide wheel is fixed to the bottom of the bottom layer of the lifting module and is in sliding connection with the anchor chain. A plurality of auxiliary winches are further fixed to the tops of th