Adjustable fireproof frame

The utility model discloses an adjustable fireproof frame. Fireproof frame body, the fireproof frame body comprises a first frame and a second frame. The first frame is connected with the second framein a matched mode. The first frame comprises a first L-shaped connecting part and a U-shaped connecting part, the first L-shaped connecting part and the U-shaped connecting part are integrally formed, the U-shaped connecting part comprises a sliding groove, the left end and the right end of the sliding groove are provided with a first connecting part and a second connecting part respectively, andthe first connecting part is connected with one end of the first L-shaped connecting part. Beneficial effects are as follows. The sliding part is arranged at one end of the second L-shaped connectingpart, and the sliding part is matched with the adjusting mechanism arranged in the U-shaped connecting part, so that left-right movement of the first frame and the second frame is achieved, the distance between the first frame