China's gear industry is the key foundation of China's equipment manufacturing industry

Through the anti-fatigue and long-life manufacturing technology, it solves the three common problems of short-lived life, poor reliability and heavy structure in the Chinese gear industry, in order to realize the new development of the whole industry driven by high-end gear products. This is the “China” held in Tianjin. The common voice of the participants at the Gear Industry Development Conference. During the conference, nearly 100 key enterprises in China's gear industry, such as Beijing North Tooth, CITIC Heavy Industry, Tianjin Tianhai Synchronization, Stellar Technology, Ningbo Dongli, Hangzhou Jiepai, etc., jointly launched, and combined with Beijing University of Technology, Henan University of Science and Technology, and raw materials and machine tools. The "China Gear Industry Alliance" jointly established by industrial chain related enterprises and research institutes such as tools, measuring instruments and oil products has made substantial progress after more than half a year of preparation. In this regard, Lu Xi, deputy director of the Industrial Policy Department of the Ministry of Industry and Information Technology, who participated in the China Gear Industry Development Conference, pointed out in his speech that the "China Gear Industry Alliance" will be the key infrastructure of China's equipment manufacturing industry (gear, bearing, hydraulic, pneumatic, sealing and The first industrial alliance in the fastener industry, its establishment marks the confidence and courage of China's gear industry to overcome high-performance gear, break through high-end products, adjust industrial structure, promote industrial upgrading, and also act as a joint operation to build innovative industries. . The parts represented by gears are not only the basic industries of China's equipment manufacturing industry, but also an important foundation in all fields of national economic construction. As a part of mechanical transmission that transmits motion and power, the gear is both a main transmission part and a moving part. It is a key component in many high-end mechanical equipment fields such as automobiles and machine tools, and usually determines the main functions of the overall equipment. It is understood that as one of the three major markets of the gear industry, vehicle gears account for 62% of the total gear market, of which automotive gears account for 62% of the vehicle gear market share. In other words, the gears used in automobiles account for nearly 40% of the entire gear market, showing the importance of gears for the automotive industry.
Zhao Zhenye, an academician of the Chinese Academy of Engineering, introduced in the speech of the conference that the main failure modes of gears include fatigue including bending fatigue and contact fatigue. For a long time, short life, poor reliability, and heavy structure have become the three major problems that restrict the development and safe use of China's gear industry, and "formed" manufacturing is the main reason for the formation of three major problems. After more than 20 years of research and practice, Academician Zhao Zhenye and his team have integrated design, materials and manufacturing technology to form a set of stress-free concentrated anti-fatigue long-life manufacturing technology theory and system method with dual characteristics of military and civilian with Chinese characteristics. Through the practice and application in the field of aviation, the feasibility of anti-fatigue gear manufacturing theory is proved. Through the new concept of anti-fatigue machining and surface composite hardening technology and surface composite modification technology, the life of the gear can reach tens to hundreds of times under the original "forming" processing state, greatly improving the key part of the gear. Reliability, while also greatly reducing the weight of the gear components, thus becoming a realistic way for China to independently manufacture high-end gears. The development of advanced AMT, DCT, CVT and multi-speed AT automatic transmission assembly, as well as the development of energy-saving and environmentally-friendly automatic transmission key components, high-precision low-noise long-life large and medium-sized spiral bevel gears, high-precision automobile gears, etc. During the 12th Five-Year Plan period, the gear industry focused on the development of projects and projects; and the high-end gear manufacturing technology that is resistant to fatigue and longevity is a predictable breakthrough for the Chinese gear industry to achieve these major projects and key projects. Zhang Wei, general manager of Beijing North Tooth Co., Ltd. said at the meeting that the gear industry needs to be led by independent core technologies that can realize industrialization, gather industry-university research resources, jointly innovate, overcome industrial common technologies, and reverse high-end major equipment gears. The transmission has long relied on the passive situation of imports. Participants said that the whole industry should unite and give full play to the wisdom and strength of the government, enterprises and scientific research. Driven by high-end gear products, the entire industry chain will be simultaneously innovated to revitalize China's equipment manufacturing industry and build China as soon as possible. Become a strong country in the gear industry and work hard.

Push Button Hand Shower

The utility model discloses a Kitchen Shower head that is convenient to switch the water outlet mode, has a compact structure, and is easy to use, and a kitchen faucet using the kitchen shower head. , The shower head is provided with a water separator, and the water separator is provided with an annular flow channel and an inner flow channel respectively connected to the spray water outlet body and the V-shaped water outlet body, and the lower end of the outer wall of the water separator is upwardly circular A plurality of water inlet holes connected to the annular flow channel are provided, and a first sealing ring is provided on the lower side of the water inlet hole; the water outlet end of the shower body is connected with a converter, and the converter is provided with a communicating In the water diversion cavity at the water outlet end of the shower body, the lower end of the water diversion device is installed in the water diversion cavity and can move up and down, and the upper end of the inner wall of the water diversion cavity is provided with a convex ring matching the first sealing ring, so The bottom surface of the water diversion cavity is provided with a sealing gasket that can seal the inner flow channel.

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