Dual Trolley Shipbuilding Gantry Crane for Dry Dock

Product Parameters (Full Localized Export Adaptation) Product Name: Marine Construction Gantry Crane System, also known as shipbuilding gantry crane / shipyard gantry crane Rated Lifting Capacity: 100t to 3600t, typical configuration: 2×200t+200t dual trolley combination, fully customizable for dock projects Span: 40m to 230m, designed to span the full width of dry docks or ship berths Lifting Height: 40m to 128m, built for hull erection and marine module assembly Working Class: A2-A4, heavy-load low-speed operation with micro positioning control Main Frame: Double girder portal frame, rigid leg on one side and flexible leg on the opposite side Dual Trolley Lifting System: Upper trolley with double hooks supports independent or synchronized movement with transverse shifting lifting points. Lower trolley travels on the bottom flange of the main girder and can pass underneath the upper trolley. Combined operation enables segment hoisting, air turnover and micro rotation for millimeter-le…