Recently, the high-power NCP135 adjustable paddle (purchased by the product library) independently developed by Nanjing Gaojing Marine Equipment Co., Ltd., a subsidiary of NGC, has successfully passed the CKTS1225 dual-machine parallel gearbox (purchasing supply). The new product appraisal organized by Jiangsu Provincial Economic and Information Committee, the experts of the appraisal committee unanimously agreed that the technical indicators and structure of the two products have reached the domestic leading and international advanced level, breaking the foreign monopoly and filling the domestic gap in this field. This appraisal shows that NGC has a strong research and development capability in high-power propellers (purchasing supply and supply) and gearboxes, which can make greater contributions to the improvement of China's ship supporting capacity.
   The NCP135 adjustable paddle propulsion system (purchased by the product library) has a paddle diameter of 1350 mm, a blade diameter of 5800 mm, and a propeller (purchased by the product library) with a maximum thrust of 130 t. It is the most adjustable paddle in China. The concept of advanced ship propeller matching design is adopted in the research and development process of this product. The computational fluid dynamics method based on the panel method is used to design the propeller blades, which fully considers the influence of unfavorable factors such as cavitation, noise and vibration. The ship's speed is effectively predicted. The internal parts of the paddles are calculated by advanced finite element analysis method. Through the research on the distribution of the stress field of the parts, the key components such as the hub and the guide frame are optimized. Both the hydraulic distance control system and the pitch remote control system adopt the concept of redundant design. The related accessories are all made of world-class brands and products with global after-sales service qualification, which fully guarantee the quality and performance of the products. According to the actual ship usage and user feedback report, the product has similar performance to the European ALPHA pitching paddle (purchasing supply) system, with higher bearing capacity, more sensitive shifting response and good matching of the paddle.
   The CKTS1225 dual-machine parallel marine gearbox has a maximum transmission capacity of 18.6 kW/rpm and a maximum thrust of 950 kN. It is the largest dual-machine parallel gearbox with the highest transmission capacity. The gearbox adopts the structure of the hydraulic clutch (purchasing supply) of the friction plate, which can realize single machine operation, two-machine operation, single machine switching and PTO function, and the automation (product library purchase and supply) function is high. The gear design adopts advanced kisssoft gear calculation software (product library purchase supply), and the bearing (product warehouse purchase supply) adopts imported brands such as SKF. The cabinet is welded (product warehouse supply) structure, and the layout of the cabinet is optimized by finite element analysis. The hydraulic lubrication system is highly redundant and uses a design concept based on secondary control, making the lubrication and hydraulic circuits independent. The gear box has the characteristics of small volume, large bearing thrust, high gear bearing capacity and good stability.
   At present, the South High-Tooth Adjustable Paddle and Gearbox are available in an overall package and provide the overall solution for propulsion system technology. This not only reduces the communication and coordination workload of the overall propulsion system, but also adds a lot of convenience to the later ship maintenance. It is a solution that is widely welcomed by shipowners, which further enhances the competitive advantage of NGC in the field of marine and offshore propulsion systems.
   The ship supporting industry accounts for 40%-60% of the total shipbuilding cost, which is the core of the development of the ship supporting industry. Its development level directly affects the comprehensive competitiveness of the shipbuilding industry. At present, although there are many ships and platforms built in China, the problem of the lag of the development of marine equipment in China is very prominent, and it has become the main bottleneck restricting the construction of a shipbuilding power. The outstanding performance is that the marine equipment industry chain is imperfect, and the research and development capability needs to be comprehensively strengthened. The competitiveness of local brand products is weak, the system integration and packaging supply capacity are insufficient, and there is a lack of large and powerful enterprises with international competitiveness. To achieve the strategic goal of a shipbuilding power, we must speed up the development of marine equipment development and service capabilities, and comprehensively break through the bottleneck of the development of the ship supporting industry. Therefore, the Ministry of Industry and Information Technology has further implemented and implemented the "China Manufacturing 2025", further promoted the structural adjustment, transformation and upgrading of the shipbuilding industry, accelerated the improvement of the supporting capacity and level of China's marine equipment, and supported the construction of a shipbuilding power. Promotion Action Plan (2016-2020). The main goal is to basically build a relatively complete marine equipment R&D, design, manufacturing and service system by 2020. The average loading rate of the three mainstream ship-type localized marine equipment is over 80%, and the average loading rate of localized marine equipment for high-tech ships. More than 60%, the local matching rate of key components of marine equipment reached 80%. The key marine equipment design and manufacturing capabilities have reached the world's advanced level, with brand products with strong international competitiveness, and become the world's major shipbuilding equipment manufacturing country.
   Nanjing Gaojing Marine has seized this historical opportunity and established the Marine Propulsion and Transmission Equipment Research Center to increase the independent research and development of propulsion and transmission equipment, and is committed to providing customers with various offshore platforms (ship type shipyards trading) and ships. The best solution for propulsion and drive trains. Through these years of hard work, we have obtained nearly 100 national authorized patents, and completed the series development of 13 new products including NCP135 adjustable paddles and CKTS1225 dual-machine parallel ship gearboxes. Ministry and city awards and special research and development funding support. At present, it is the only manufacturer in China that can supply all kinds of ships and marine propulsion and transmission equipment in a complete set. It has formed an annual production capacity of more than 1,000 sets of propellers and gearboxes. We are expanding our domestic and international markets by adopting the global sales policy of "both domestic and foreign, and promoted by others", and strive to become a world-class supplier of marine platforms and ship propulsion and transmission complete systems.
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