The 8MW-class marine lightweight reduction gearbox jointly developed by China Shipbuilding 703 Research Institute and Guanghan Transmission Company has successfully passed the performance verification test, marking a major breakthrough in the field of high-power marine power transmission equipment in China. The gearbox is designed for medium-sized ships, adopts a lightweight design and supports multiple PTO functions, and has a highly integrated auxiliary equipment installation solution. During the manufacturing process, the product has ensured high precision and reliability through precision technology and multiple technical breakthroughs, meeting the stability requirements of long-term high-load conditions. This achievement not only fills the domestic technical gap, but also provides strong support for the upgrading of my country’s ship power equipment industry, and is expected to become an important choice for medium-sized ship power systems in the future.
Technical Background and Project Overview
Recently, the 8MW-class marine lightweight reduction gearbox jointly developed by China Shipbuilding 703 Research Institute and Harbin Guanghan Power Transmission Co., Ltd. (hereinafter referred to as “Guanghan Transmission Company”) successfully passed the performance verification test. This equipment not only represents a major breakthrough in domestic marine gearbox technology, but also marks a new height in my country’s high-power marine power transmission equipment field. As an advanced power transmission equipment developed specifically for medium-sized ships, the gearbox adopts a lightweight design, has a highly integrated auxiliary equipment installation solution, and supports multiple PTO (power output) functions. Its complex structure and high-precision design requirements make research and development extremely difficult.
During the research and development process, the 703rd Institute played its core technical advantages in system design and integrated optimization, and worked with Guanghan Transmission Company to solve several key design problems after multiple rounds of program demonstration and technical research, and finally successfully developed the product. This achievement not only fills the gap in the design and manufacturing of high-power marine gearboxes in China, but also provides strong technical support for the development of my country’s ship power industry.
Product Highlights and Performance Characteristics
- Highly integrated design: For the first time, the integrated installation of auxiliary equipment is realized, including the lubricating oil system, seawater cooling system, and measurement display and control system, ensuring real-time monitoring and precise control of the equipment’s operating status.
- Complex process achieves high precision: The core structure of the gearbox consists of a gear transmission system, a housing, bearings, a friction clutch, and a turning/locking device. In the production of gearboxes, Guanghan Transmission Company has overcome many processing and assembly problems through three-level precision tooth component processing, sliding bearing processing, and friction clutch manufacturing.
- Strict reliability testing: After a comprehensive operation test and a 200-hour reliability test, all performance indicators fully meet the design requirements, reflecting the product’s excellent stability under long-term high-load conditions.
Innovative Process Breakthroughs and Technological Breakthroughs
During this development process, Guanghan Transmission Company has made a series of important breakthroughs in the manufacturing process of key components. Among them, the inner gear ring of the friction clutch is an important component of the reduction gearbox, and its processing is extremely difficult: large diameter, thin gear wall, strict precision requirements and easy deformation during heat treatment. To meet this challenge, Guanghan Transmission Company successfully completed the manufacturing and processing of the fourth-level precision inner gear ring by optimizing the process route and innovating production technology, breaking through this key technical bottleneck that restricts the performance of lightweight gearboxes.
Industry Significance and Future Outlook
The independent research and development of the 8MW lightweight marine reduction gearbox fully demonstrated the forward-looking vision and technical strength of the 703 Institute in the field of high-integration design, and also demonstrated the breakthrough progress of Guanghan Transmission Company in the production process of complex equipment. The deep integration of the two through innovative technology and rich production experience has significantly improved my country’s technical capabilities in the entire industrial chain of marine power transmission equipment.
In the future, as the demand for high-performance marine equipment continues to grow, 8MW reduction gearboxes will become an important choice for medium-sized ship power systems. This breakthrough not only provides a model for the technological upgrading of my country’s shipbuilding industry, but also lays a solid foundation for promoting domestic equipment to occupy a more important position in the international market competition.
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