Foldable heavy carton

The utility model discloses a foldable heavy carton. The foldable heavy carton comprises a carton body, the carton comprises a bottom plate, side plates are connected to the two sides of the opposite position of the bottom plate, V-shaped folding plates are connected to the sides, adjacent to the side plates, of the side walls of the bottom plate, locking mechanisms used for fixing the shape of an assembled carton are arranged between the two side plates and the V-shaped folding plates, and a buffering mechanism used for buffering contained cargoes is arranged on the top face of the bottom plate. The carton binding device has the advantages that the locking mechanism is arranged, so that an assembled carton can be preliminarily fixed conveniently, binding work is facilitated, manual supporting is not needed, work convenience is improved, and labor consumption is reduced; by arranging the buffering mechanism, the contained goods can be conveniently buffered, the situation that the stability of the goods is aff