Lifting hook
The ME Shipbuilding Gantry Crane is a heavy-duty gantry crane engineered for demanding shipyard applications, characterized by an exceptionally high lifting capacity, large span, and significant lifting height.
Main Technical Characteristics:
1.Versatile Lifting Functions: Capable of single-point lifting, hoisting, in-air rotation (including slight horizontal adjustment), and other complex maneuvers.
2.Advanced Motion Control: All operating mechanisms utilize variable frequency drive (VFD) control for smooth, precise, and energy-efficient operation.
3.Integrated Maintenance & Safety: Features a dedicated jib crane mounted on the rigid leg's girder for servicing the main trolleys. It is also equipped with reliable storm protection devices, including rail clamps and ground anchors.
Key Design Features:
1.Structural Configuration: Available in both single and double girder designs. The girder employs an optimized variable-cross-section design for superior material efficiency and strength.
2.Dual-Trolley System:
Upper Trolley: Equipped with two main hooks, positioned outside the girder(s).
Lower Trolley: Features one main hook and one auxiliary hook, centrally mounted between the girders.
Both trolleys are designed to operate independently and can cross each other's path for maximum operational flexibility.
3.Safety & Intelligent Systems:
Comprehensive Safety: Incorporates a full crane safety monitoring system. A PLC and VFD communication network ensures synchronous control and automatic load balancing across multiple lifting points, guaranteeing stable and safe operation.
Precision Positioning: An intelligent automatic positioning system enables highly accurate load placement. The optional double-rails-on-one-side design effectively reduces wheel pressure, lowering infrastructure costs.
4.Efficiency & Performance:
Robust Construction: Fabricated from high-strength special steel to ensure structural integrity and enable reliable, continuous operation under full load.
Energy Saving: Exemplified by models like the 750t crane which operates on a 10KV power supply and features an energy recovery system. This system regenerates power during load descent, achieving energy savings of 25-30%.
It is special for fragmented transport, end-to-end jóoint and turning operation of large ship hulls.
Ship gantry crane task is to put all the parts required for the manufacture of the ship (ribs, steel, steel, etc.) from the ground transportation to manufacturing place. this transport work must be able to complete the task in a very long journey in transportation quickly. therefore, the number of cranes decided, enough to reach the dock area of the entire foundation, and each crane mutually interfere with each other in principle.
Here are several key application scenarios for a Shipbuilding Gantry Crane:
1. Block Erection and Hull Assembly
This is the primary function. The crane lifts and precisely positions prefabricated, massive steel sections (blocks) of the ship's hull—such as the double-bottom, side shells, decks, and bulkheads—into the building dock or onto the building berth for welding and assembly.
2. Moving and Positioning Large Prefabricated Sections
Before final assembly, the crane transports enormous prefabricated modules (weighing hundreds of tons) from the fabrication workshops to the assembly area. This includes fully outfitted superstructure blocks or engine room sections.
3. Installation of Major Ship Components
The crane is essential for hoisting and installing the heaviest single components of a vessel, including:
Main Engines: Lowering the complete diesel engine or turbine into the engine room.
Propellers and Shafts: Installing the massive propeller and its associated shafting.
Funnel Sections: Placing the exhaust funnel and its integrated systems.
Bow and Stern Units: Positioning complex units like the bulbous bow or stern thruster tunnels.
4. Outfitting and Equipment Installation
After the hull is structurally complete, the crane is used to install large outfitting items such as deck machinery (anchor windlasses, mooring winches), lifeboat davits, large accommodation modules, and cargo access equipment (ramps for Ro-Ro ships).
5. Manufacturing Support Logistics
Within the shipyard, it handles logistical tasks like moving large steel plates, profiles, and pre-assembled pipe racks from storage areas or pre-processing stations to fabrication shops.
6. LNG Carrier and Specialized Vessel Construction
For complex vessels like LNG carriers, the crane is crucial for handling and installing the enormous, pre-insulated cargo containment tanks (membrane or prismatic types), which are among the most delicate and critical lifts in shipbuilding.
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