Firm supporting frame

The utility model discloses a firm type supporting frame which comprises symmetrically-arranged frame bodies, the symmetrically-arranged frame bodies are sequentially arranged, each frame body is composed of a vertical rod, a transverse rod and an inclined rod, the transverse rods are arranged on the front sides of the vertical rods, the inclined rods are arranged at the included angle positions of the bottom ends of the vertical rods and the transverse rods, a plurality of fixing assemblies are arranged on the surfaces of the transverse rods, and the fixing assemblies are connected with the transverse rods. The fixing assembly is composed of a fixing groove, a fixing column and symmetrically-arranged limiting assemblies, and the fixing groove is formed in the surface of the transverse rod. By means of the designed fixing assembly, the problems that in the using process of an original supporting frame, after a screw penetrates through a strip-shaped groove formed in the surface of a transverse rod, the attach