Supporting frame for mounting prefabricated wall panel

The supporting frame comprises a supporting seat, a groove is formed in the upper surface of the supporting seat, first connecting rods are rotationally installed on the left sides of the front side wall and the rear side wall of the groove, first sliding grooves are formed in the right sides of the front side wall and the rear side wall of the groove, and first sliding blocks are slidably arranged in inner cavities of the first sliding grooves; second connecting rods are rotationally installed on the side walls of the first sliding blocks correspondingly, a connecting rod is rotationally installed between the first sliding blocks on the front side and the rear side, an air cylinder is hinged to the left side wall of the groove, a piston rod of the air cylinder is fixedly connected with the connecting rod, and third connecting rods are hinged to one ends of the first connecting rods correspondingly. The problems that at present, the splicing and building workload is large, the operation difficulty is high, ca