The shipbuilding industry is a crucial indicator of a nation’s comprehensive industrial strength, and large shipbuilding gantry cranes are vital national assets supporting the construction of ultra-large ships. The 300-ton shipbuilding gantry crane built by Henan Haitai Heavy Industry for Wanlong Heavy Industry has been put into operation. With its exceptional lifting capacity and stable operational performance, it provides core support for the segmented lifting and closure of ultra-large ship hulls, showcasing the core strength of domestically produced high-end shipbuilding lifting equipment.

The core bottleneck in the construction of ultra-large ships lies in the segmented lifting and closure of hull sections—giant steel structural components, often weighing hundreds of tons, place almost stringent requirements on the rated load, lifting height, span coverage, positioning accuracy, and safety redundancy of lifting equipment. Traditional lifting equipment generally suffers from insufficient lifting capacity, poor operational stability, and low positioning accuracy, which not only affects shipbuilding efficiency but also poses significant safety hazards, becoming a key constraint on Wanlong Heavy Industry’s large shipbuilding production capacity.

The 300-ton shipbuilding gantry crane delivered this time is a customized flagship piece of equipment tailored by Haitai Heavy Industry based on the actual working conditions of Wanlong Heavy Industry’s slipway. With a rated lifting capacity of 300 tons, the equipment is equipped with a dual-trolley collaborative operation system, enabling efficient overall hoisting, transfer, and precise positioning of large ship hull sections. It deeply integrates four core technologies: a large-span rigid gantry design, dual-trolley synchronous control technology, a millimeter-level anti-sway positioning system, and a full-condition safety interlocking protection system, achieving a comprehensive breakthrough in lifting capacity, adaptability, and safety.

Its core double-beam rigid gantry structure, designed with high-strength steel, has undergone multiple rounds of mechanical simulation optimization and non-destructive testing. It maintains stability and deformation under large span and high load conditions, perfectly adapting to the operational requirements of large slipways. The dual-trolley synchronous control system enables coordinated lifting and independent operation with dual hooks, accommodating both the overall lifting of ultra-large sections and the flexible transfer of small and medium-sized components, significantly improving equipment utilization. The intelligent anti-sway and laser positioning system controls the sway amplitude during lifting to the centimeter level, ensuring precise alignment of sections even under sea winds, greatly reducing manual correction costs and the risk of hull damage. Simultaneously, the equipment integrates over 20 safety protection functions, including overload protection, travel limit, wind speed warning, and fault self-diagnosis, constructing a comprehensive safety barrier from hardware to software, meeting the demands of all-weather, high-intensity shipbuilding operations.

After being put into operation, this equipment can complete the segmented hoisting tasks that require multiple processes in the traditional model in one go. It is expected to increase the overall operating efficiency of Wanlong Heavy Industry’s slipway by more than 40%, while significantly reducing the intensity of manual operation and construction safety risks, providing core equipment support for the company’s large shipbuilding capacity upgrade.

With full-chain quality control and service support, this benchmark project demonstrates Haitai’s strength.