Cantilever foundation supporting system device of construction hoist

The utility model provides a construction hoist overhanging foundation supporting system device, the end part of a hoist foundation overhanging structure is plugged and welded with an anchor plate embedded part A through a steel bar perforation, an anchor plate embedded part B is pre-embedded on a basement outer wall, and the anchor plate embedded part B and the anchor plate embedded part A are connected through a steel support, so that the force borne by the overhanging structure can be conducted to the basement outer wall. The other end of the elevator foundation is installed on a basement top plate, an anchor plate embedded part C is pre-embedded in the basement top plate, and the anchor plate embedded part C is connected with the anchor plate embedded part A through a steel connecting rod A; the anchor plate embedded part A, the anchor plate embedded part C and the steel connecting rod A are all poured into elevator foundation concrete to form an integrated structure. The steel connecting rods B are obliq