Structure Of Gantry Crane

The lifting mechanism, trolley running mechanism and bridge structure of gantry crane are basically the same as those of overhead crane. Due to its large span, most crane operating mechanisms adopt separate driving methods to prevent the crane from tilting and increasing resistance, and even accidents. The lifting trolley of gantry crane runs on the bridge, and some lifting trolley is a jib crane. The legs on both sides of the bridge are generally rigid legs; When the span exceeds 30 meters, one side is usually a rigid leg, while the other side is a flexible leg connected with the bridge through a spherical hinge, making the gantry a statically determinate system. This can avoid additional stress caused by lateral thrust under external load, and can also compensate for the longitudinal temperature deformation of the bridge. The gantry crane has a large wind area to prevent sliding or overturning under strong wind, Equipped with a wind meter and a crane rail clamp interlocked with the operating mechanism. The bridge can be cantilevered at both ends; It can also be one end with a cantilever or both ends with a cantilever to expand the operating range. The bridge of semi gantry crane has legs at one end and no legs at the other end, and runs directly on the high platform.