Bridge gantry crane

Bridge gantry crane is set horizontally in two legs of the shape constitutes a bridge double girder gantry crane. This crane orbit on the ground, mainly used in outdoor storage yard, shipyards, power plants, ports and railway stations and other places for cargo handling and installation. Gantry crane hoisting mechanism, trolley traveling mechanism and bridge construction, bridge crane with basically the same. Because span, crane operating agencies they use are driven way to prevent the crane operation produce skew increases resistance, even accidents. Gantry crane lifting trolley running on the bridge, some lifting trolley is a jib crane. Both sides of the bridge legs are generally rigid legs; when span of more than 30 meters, usually on one side of the rigid leg, while the other side is connected through a flexible leg and bridge the ball joint, the mast becomes statically determinate system under the external loads to avoid because of the additional stress caused by lateral thrust, but also to compensate for vertical temperature deformation bridge Shipbuilding gantry crane

wind area, in order to prevent falling or tipping lines in strong winds, wind measurements and fitted organization and operation of the crane rail clamp interlock. Trays may be free at both ends of the cantilever; may be cantilevered at one end or both ends of the boom, to expand the operating range. Semi-gantry crane bridge legs at one end and the other end without legs, running directly on the high bench.