A gantry crane is a variant of a bridge crane, also known as a gantry crane. It is mainly used for loading and unloading operations of outdoor freight yards, material yards and bulk cargoes. the gantry crane has the characteristics of high site utilization, large operating range, wide adaptability and strong versatility, and is widely used in port yards.
Its metal structure is like a portal frame. It is equipped with two legs under the main beam. It can walk directly on the track on the ground. the two ends of the main beam can have overhanging cantilever beams.