my country's deep-sea mining heavy-load deployment and recovery equipment has made new breakthroughs

The deepwater heavy-duty deployment and recovery winch developed by the China State Shipbuilding Corporation 704 Institute assisted the entire deployment and recovery process of the "Kaifu No. 2" and set new records for it in a series of complex tasks. Provide technical support for deep sea mining experiments.

During the sea trial of the "Kaituo 2" deep-water heavy-load deployment and recovery, the 704th Institute worked closely with Shanghai Jiaotong University to coordinate operations and make every effort to overcome the deep and heavy-load deployment in the sea area. Despite technical difficulties such as heavy sea conditions, complex sea conditions, and high operational support requirements, the deployment and recovery operations under high sea conditions and heavy load conditions were completed, with the maximum deployment depth reaching 4102.8 meters. At the same time, through the precise coordinated control of multiple actuators and the tension control technology during the deployment and deployment of flexible media with large cable diameters and long distances, the entire deployment and recovery process is ensured to be efficient, reliable and smooth under complex sea conditions.

This is the first time in my country that the deep-sea heavy-duty deployment and recovery operation of a sulfide mining vehicle has been completed in a 4,000-meter deep-sea mining area. It comprehensively verified that all performance indicators of the deep-sea mining deployment and recovery system are Meet the needs of difficult deep-sea mining operations. The deepwater heavy-duty deployment and recovery winch developed by the 704th Institute is the first independently developed mobile integrated traction winch in my country, and is also a key core equipment for deep-sea mining. Based on the special requirements of deep-sea mining, the institute continues to carry out special technical research, and has successively made breakthroughs in a series of key technologies such as integrated overall design, long-distance cable routing with large cable diameters and flexible media, and integrated motorized loading of winches. After this full-process test, its various performance indicators have reached the international advanced level.

The winch adopts variable frequency drive, with a safe working load of 30 tons and a rope capacity of 6,500 meters. During the R&D and design process, the 704th Institute continuously optimized and iterated various performance indicators and functional characteristics of the winch system, and carried out comprehensive optimization and upgrades in aspects such as automation, electrification and reliability, so that the system has excellent driving efficiency. , strong carrying capacity and high degree of automation. At the same time, the winch adopts an integrated design method to integrate various devices such as traction, cable storage, and cable arrangement, as well as electronic control and hydraulic systems into an integrated frame, which can meet the needs of multi-platform mobile loading.

| Special reporter: He Baoxin

| Correspondent: Mao Lifeng

| Responsible editor: Gao Hongmei
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| Proofreading: Fang Hao

| Review: Xiang Li/Gan Fenglu