The explosion -proof electric gourd has a wire rope and chain type, mainly because his carrier is a steel wire rope or a chain. Compared with the same tonnage, the ring -chain electric gourd is smaller than the steel wire rope electric gourd, because the structure of the two is different. The ring chain electric gourd, as the name suggests, is transmitted by the chain, and the separation of chain bags from the gourd host is a major advantage. It overcomes the large problem of the large volume of the steel rope electric gourd roll. Therefore, the ring chain gourd is smaller than the steel wire rope gourd. The higher the height, the larger the volume of the wire rope electric gourd, the larger than the rings of the rings of the gourd. Because the steel wire rope of the steel wire rope is around the roller, it has a greater impact on volume.