Assembly for newly-added elevator hook beam of existing building

The utility model discloses an assembly for a newly added elevator hook beam of an existing building, which comprises a building surface layer and a roof floor located at the bottom of the building surface layer, and both the building surface layer and the roof floor are provided with mounting holes in a penetrating manner. By arranging a series of structures, aiming at the situation that an elevator needs to be additionally arranged in an existing old community, the roof structure of the type of floors is thin, the bearing force range is small, and the elevator is not suitable to be additionally arranged, the lifting hook beams are additionally arranged in the holes formed in the building surface layer and the roof layer plate, and the lifting hook beams are T-shaped mechanisms; the contact area with a building surface layer is increased, the bearing capacity is improved, elevator installation can be carried out on the basis that an original roof structure is not damaged as much as possible, the risks of roo