Combined crane for docks and dock wharfs

Abstract

The invention discloses a combined crane for docks and dock wharfs. The combined crane is characterized in that a fixed overhead crane and a movable overhead crane are combinedly arranged on a movable frame structure, wherein the frame structure is formed by welding track beams, column legs, lower beams, diagonal braces and struts; the fixed overhead crane is fixed on the two track beams through a planar hinge or a plate hinge; the movable overhead crane is fixed on the track beams; and the frame structure is fixed on a complete machine operating mechanism. Compared with the prior art, the combined crane has the advantage of coordinated hoisting of an overhead crane and a portal crane, infrastructural investment of an overhead trestle bridge is saved, working blind zone is effectively avoided, the overall stability of equipment is improved, and the combined crane is convenient to operate coordinatedly and has high working efficiency. Besides, the combined crane has irreplaceable advantage on wind resistance and seismic resistance, and is particularly suitable for docks and dock wharfs where long-distance overhead trestle bridges can not be arranged.

Description

technical field [0001] The invention relates to the technical field of heavy lifting equipment, in particular to a combined crane used for docks and docks. Background technique [0002] Cranes are key equipment for the construction of ships and offshore engineering platforms. With the advancement of related technologies, the weight of segments and platforms is increasing, and their size and shape are becoming more and more complex. Therefore, the lifting of equipment and the loading and unloading of components The ability and its safety and adaptability to various working environments have put forward higher requirements. [0003] At present, one or two gantry cranes or bridge cranes are generally used for lifting and transporting large parts in harbor basins and docks. This lifting process has the following disadvantages: (1) It needs to be built along the dock wall or The elevated trestle of the wharf is used for the operation of a single or two bridge cranes. Even if th...

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Problems solved by technology

[0003] At present, one or two gantry cranes or bridge cranes are generally used for lifting and transporting large parts in harbor basins and docks. This lifting process has the following disadvantages: (1) It needs to be built along the dock wall or The elevated trestle of the wharf is used for the operation of a single or two bridge cranes. Even if the conditions permit, it needs to increase the basic investment; (2) two gantry cranes or bridge cranes are lifted, the coordination is poor, and the management difficulty increases; (3) two gates Affected by the length of the operating mechanism, its own structure and the track, the two cranes require a larger safety distance, resulting in a larger working blind area; (4) the overall stability of a single device is relatively poor, and it is resistant to storms and earthquakes. Relatively weak

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