Coal mine tunneling supporting device with adjusting function

The utility model discloses a coal mine tunneling support device with an adjusting function, which belongs to the technical field of coal mines, and comprises two support frames, two side protection plates, four mounting structures and two telescopic structures, two vertical inner cavities are arranged in each side protection plate, the four mounting structures are respectively arranged in the four vertical inner cavities, and the two telescopic structures are arranged in the two vertical inner cavities. A side protection plate is placed in a positioning groove, then an adjusting wheel is rotated, then a threaded rod rotates to enable a connecting plate to move in the direction of the adjusting wheel on the threaded rod, and when the connecting plate moves, a push-pull rod is driven to gradually extend to push a mounting plate, so that a connecting column is clamped into a connecting hole to mount the side protection plate, side protection is increased, and the protection comprehensiveness of the supporting d