Shipbuilding gantry crane
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Shipbuilding gantry crane is a kind of Portal cranes, used for shipyard middle ship plate to assembly the hull.
Shipbuilding gantry crane is a kind of Portal cranes, used for shipyard middle ship plate to assembly the hull. The device has two trolley: one set has two main hook, traveling on the up bridge wing margin ; another has a main hook and a auxiliary hook, traveling on the bottom bridge wing margin, two trolley running crossly to flip and lift the large blocks.