Air bag protection device for air shield dam

The utility model discloses an air shield dam air bag protection device, which relates to the field of water conservancy and hydropower facilities and comprises a base, an air bag, a fixed seat, a rotating shaft and a shield dam plate, the air bag is arranged in the middle of an inner cavity of the base, the fixed seat is arranged at one end of the inner cavity of the base, and the rotating shaft is rotatably arranged on the surface of the fixed seat. A shield dam plate is rotatably connected to the surface of the fixing seat through a rotating shaft, a top mounting seat is fixedly welded to one side of the top of the shield dam plate, a limiting seat is arranged at the end, away from the fixing seat, of an inner cavity of the base, a bottom mounting seat is arranged on the upper surface of the limiting seat, and a filter screen is movably arranged in an inner cavity of the bottom mounting seat. The top of the filter screen is movably connected with the top mounting seat; the novel air shield dam solves the p