Safety buckle for steel structure upper beam operation

The utility model discloses a safety buckle for steel structure upper beam operation, which comprises two buckle hanging pieces respectively connected to two sides of a lower wing plate of an H-shaped steel beam of a steel structure, each buckle hanging piece is provided with a buckling groove matched with the lower wing plate of the H-shaped steel beam and a vertical hanging plate, and each vertical hanging plate is fixed below an opening part of the corresponding buckling groove; a horizontally-arranged double-end screw is installed on the two vertical hanging plates in a penetrating mode, the vertical hanging plates are locked on the double-end screw through a front nut and a rear nut, a safety hook is hung on the double-end screw, and the safety hook is arranged between the two buckling hanging pieces; the buckling groove is connected with a lower wing plate of the H-shaped steel beam through walking wheels, and the walking wheels are installed on the upper side wall and the lower side wall of the bucklin