Supporting frame convenient to adjust

The utility model relates to the technical field of coal mine tunneling protection, in particular to a supporting frame convenient to adjust, which comprises an upper supporting frame, a ventilation fan, a plurality of adjusting supporting components, a height adjusting component and a plurality of fixators. The bottoms of the supporting frames are correspondingly installed at the tops of the fixing devices, the ventilation fan is installed at the bottom in a cavity of the upper supporting frame, the adjusting supporting assemblies are annularly installed on the outer side of the upper supporting frame, and the supporting frames make better contact with the top of the inner wall of a mine through supporting plates of the adjusting supporting assemblies. A height adjusting assembly adjusts the height of the upper supporting frame, so that the upper supporting frame supports the top of the mine, the upper supporting frame facilitates installation of the adjusting supporting assembly, the supporting effect of th