It is a deformation of bridge cranes. Mainly used for loading and unloading operations of outdoor freight yards, material yards, and bulk cargo. Its metal structure is like a door shaped frame, with two supporting feet installed under the main beam, which can walk directly on the ground track. The two ends of the main beam can have overhanging cantilever beams. The advantages of gantry cranes include high site utilization, wide operating range, wide adaptability, and strong versatility, making them widely used in port freight yards.
1、 According to the door frame structure, 1. Full gantry crane: the main beam has no overhang, and the trolley is carried out within the main span; 2. Semi gantry crane: The support legs have height differences, which can be determined according to the civil engineering requirements of the site of use. 3. Double cantilever gantry crane: A common structural form, whose structural stress and effective utilization of site area are reasonable.
