Air shaft protective cover plate of integrated floor system

The utility model provides an air shaft protective cover plate of an integrated floor system, which comprises a steel cover plate, angle iron sections are welded on the outer surface of the lower endof the steel cover plate, warning strips are arranged on the outer surface of the upper end of the steel cover, the number of the angle iron sections is four, and the four angle iron sections are respectively welded on the outer surface of the lower end of the steel cover plate close to a corner. The outer surfaces of the four sets of angle iron sections are tightly attached to the inner surface of the air shaft, the stability of the steel cover plate in the protection process is improved, accordingly potential safety hazards are reduced, the warning strips are coated with black and yellow interval paint, an effective warning effect is achieved on construction workers, and antirust paint is arranged on the outer surface of the steel cover plate. According to the air shaft protection device, the shielding and suppo