Steel wire rope anti-falling cover

The utility model discloses a steel wire rope anti-falling cover, and relates to the technical field of steel wire rope falling prevention. The pulley device comprises a fixing frame, side frames, pulleys, U-shaped insertion rods, pressing pieces and limiting pieces, the side frames are detachably connected to the two sides of the fixing frame, the two ends of each pulley are arranged on the side frames on the two sides in a lap joint mode, the side frames are limited through the U-shaped insertion rods, the pressing pieces are connected to the fixing frame, and the pressing pieces are limited through the limiting pieces. The side frames can move on the fixing frame and are limited through the U-shaped inserting rods, the distance between the two side frames is adjustable, the pulley lifting device can be suitable for pulleys of different sizes, adjustability is improved, the pressing piece and the limiting piece are arranged, the pressing piece can be moved by pulling the limiting piece outwards, the pressin