Protective device of barium sulfate gas film building

The utility model relates to a barium sulfate gas film building protection device which comprises a gas film body, a reinforcing mechanism is arranged on the lower surface of the gas film body, a protection mechanism is arranged on the gas film body, connecting blocks are fixed to the front end and the rear end of the reinforcing mechanism, expansion screws are connected to the interiors of the connecting blocks in a threaded mode, and the expansion screws are connected with the reinforcing mechanism. The protection mechanism comprises two triangular frames fixed to the lower surface of the gas film body, motors are fixed to the front faces of the triangular frames, rotating shafts are fixed to the output ends of the motors, the back faces of the rotating shafts are rotationally connected with the front faces of the triangular frames on the back faces, protection layers are wound and fixed to the outer surfaces of the rotating shafts, and rope belts are fixed to the lower surfaces of the protection layers. Ac