Small lifting machine for building construction

The invention discloses a small lifting machine for building construction. The small lifting machine comprises a base, first hydraulic telescopic columns are mounted at the four corners of the base, supporting blocks are mounted at one ends of the first hydraulic telescopic columns, and second hydraulic telescopic columns are hinged to the supporting blocks; pressure sensors are mounted at the bottom ends of the second hydraulic telescopic columns, the model of the pressure sensors is MPX5999, and the second hydraulic telescopic columns are connected with spring shock absorbers through the pressure sensors; supporting discs are hinged to the bottom ends of the spring shock absorbers, a supporting column is mounted in the center of the base, the surface of the base is provided with a sliding rail, and a rotating seat is mounted at the top end of the supporting column; and a lifting frame is mounted on the rotating seat, a reinforcing column is mounted at the bottom end of the lifting frame, a reinforcing block