Supporting frame for coal mine

The invention discloses a coal mine supporting frame which comprises a bottom rod and an inclined supporting rod angle adjusting unit. The top of the bottom rod is provided with two inclined supporting rod height adjusting units through inclined supporting rod angle adjusting units, the two sides of the bottom of the top rod are movably connected with the tops of the two inclined supporting rods through hinged supports correspondingly, and the top of the top rod is provided with a top supporting unit through a transverse buffering unit. A vertical buffer unit is mounted between the inner side of the top supporting unit and the transverse buffer unit; and the inclined supporting rod angle adjusting unit comprises a strip-shaped groove, first sliding blocks, a hydraulic telescopic rod and an adjusting base, the strip-shaped groove is formed in the bottom rod, and the two ends of the strip-shaped groove are slidably connected with the two first sliding blocks correspondingly. The height can be adjusted in a larg