Cement column supporting frame for additionally installing elevator

The utility model relates to the technical field of elevator mounting, in particular to a cement column supporting frame for mounting an elevator, which comprises upright columns vertically arranged at four corners of an elevator shaft, cross beams are arranged between the two upright columns on the same side of the elevator shaft, and the upright columns comprise a plurality of cement columns spliced end to end. A connecting piece used for fixing the cement columns is arranged at the splicing position of the two cement columns; guide rails are vertically arranged on the cross beams on the two opposite sides in the cement column supporting frame, a construction platform is vertically connected to the guide rails in a sliding mode, and a driving assembly used for driving the construction platform to ascend and descend is arranged on the construction platform. The method has the effects that inconvenience brought to elevator adding construction by a construction site is improved, and the construction efficiency