Gantry crane structure

gantry crane hoisting mechanism, trolley traveling mechanism and bridge structures, bridge crane with basically the same. Because large span, crane operating agencies were driven mostly used way to prevent the crane operation and increase the resistance generated skew even accidents. Gantry crane lifting trolley running on the bridge, and some lifting trolley is a  jib crane .  Bridge on both sides of the legs are generally rigid legs; span of more than 30 m, it is often the side of the rigid leg, and the other side of the bridge by a ball hinge connections and flexible leg, the mast a statically determinate systems , under external loads to avoid lateral thrust caused by the additional stress, can also be compensated  bridge gantry crane  vertical temperature deformation of the wind area, in order to prevent the strong wind down the line or tip over, with wind measurement instrument and organization and operation of the crane rail clamp interlock. Both ends of the bridge can be without cantilevers; also be cantilevered at one end or both ends of the boom to extend the scope of operation.   hoist gantry crane  bridge legs at one end, the other end of the outrigger, running directly on the high bench.