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Gantry crane

Portal cranes are usually composed of main beams, support beams, large vehicles, small vehicles, and lifting mechanisms. The main beam is the main load-bearing structure of the gantry crane. The supporting beam is used to support the main beam and balance the lifting weight. The crane is responsible for horizontal movement on the main beam, the trolley is responsible for vertical movement on the crane, and the crane structure is used to achieve the lifting and lowering of goods.
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