China's higher speed test train was completed on the 25th at CSR Sifang, a company located in Qingdao. Liang Jianying, deputy chief engineer of Sifang Stock Company, said that the test speed of the train exceeds the speed of all EMU trains in China. CSC Chairman Zhao Xiaogang said in an interview with the media that the test train will exceed 500 kilometers per hour. The front design inspired by the "sword" At 9 o'clock on the same day, a train with "red hijab" on the front of the car was parked in the factory of Sifang. From the front, it clearly differs from the CRH380A "Long March Rocket" head model. The ritual begins. After opening the "red hijab," the front of the vehicle is nicked on both sides of the front. The shape is like a sword. According to Ding Wei, chief technical expert of CSR, the head-type design was inspired by the Chinese ancient weapon "sword" with a prominent wedge-shaped structure. The train is composed of 6 vehicles, all of which are powered vehicles, and the CRH380A "Long March Rocket" is still used as the model. There is no specific model for the test train According to the introduction of CSR technicians, the test train is based on the CRH380A's innovative results, and the safe and reliable operation under high-speed conditions is the primary goal. It focuses on improving critical speed, traction capability, and reducing resistance, etc., for system integration, head type, and vehicle Body, bogie, traction, braking and other systems are fully innovated, and key technologies have achieved autonomy and industrialization. Liang Jianying said that the research and development of the vehicle is mainly to contribute to the safety, comfort, environmental protection and energy saving of all high-speed trains currently operating in large quantities in China. On the Internet forum, professional railroad fans will call this model "CIT500." When a reporter asked whether the car was the "CIT500" of the Internet, Zhao Xiaogang said that the car has no model yet. Higher speeds increase safety margin At the inauguration ceremony, Zhao Xiaogang stated that higher speeds do not mean that they will operate at such a high speed in the future. "To carry out scientific exploration to ensure that the safety margin through experimental development, to ensure the safety of EMU operations." This train is currently only one, for future production, Zhao Xiaogang said, "Stand it suspense it." Liang Jianying said that the completion of the project was only a phased achievement. Follow-up work included static debugging of the plant's static system, dynamic debugging of the loop, and finally a high-speed rail test. On December 3, 2010, the joint operation of the CRH380A new generation of high-speed high-speed EMU trains produced by China South Railway Group Qingdao Sifang Co., Ltd. in the joint test and comprehensive test of the pilot section of the Beijing-Shanghai high-speed railway from Zaozhuang to Fuzhou. The speed reaches 486.1 kilometers. Highlights - Trains integrate technologies such as Ethernet, Internet of Things, and weather parameters such as wind, rain, snow and snow - The train can automatically control the speed after a lightning strike — According to field technicians, the two heads of the train were arranged asymmetrically, with different front and rear heads. This is also the first time that asymmetrical arrangements have been used during the test of high-speed trains. modeling "Sword", "Rocket" head and tail combination Ding Hao, chief technical expert of China South Locomotive Co., Ltd., introduced that the experimental train head type technical scheme optimized the head and tail combination of the “sword†and “rocket†through a large number of conceptual designs, numerical simulation analysis, and pneumatic test, and achieved a reduction in head vehicle resistance. The optimum technical match for tail lift is close to zero. Because when doing speed test, the head pursues the least resistance, the tail pursues the smallest lift, and controls the lift and safety to control the tail. control Simulated aircraft "wind resistance braking" When the aircraft lands, the wings will roll up to increase the air resistance to brake. The "higher speed test train" has a total of 3 windage braking devices on the top of the car. Each device is equipped with a 7-speed brake, and the operation of the 3 brake devices adopts a microcomputer-controlled synchronization mode. Safety Rain and snow parameters "automobile" Zhao Xiaogang said that the train incorporates technologies such as Ethernet, Internet of Things, and vehicle-to-ground wireless networks to automatically transmit relevant parameters of environmental climate change on the line to trains. For example, climate change parameters such as frost, rain, snow, lightning, earthquake, etc., do not need to be dispatched to tell the driver through communication, and the train automatically controls the operating speed according to the judgment of the climate, which greatly improves the safety. material Train stiffness increased by 22.7% The “higher speed test train†follows the aluminum alloy hollow profile body of the currently operating EMUs, but new materials such as carbon fiber and magnesium alloy are used in the body hoods and seats in the vehicles, respectively. In the case of weight reduction, Stiffness increased by 22.7%. At the same time, in order to improve the performance of noise reduction and noise reduction of vehicles, new nano-sound insulation materials are used for sound insulation materials in cars. power Traction power exceeding 20,000 kilowatts In the currently operating EMUs, the traction power of the CRH380A in the eight-car group is 9600 kW, the traction power of the CRH380AL in the 16-unit group is 20440 kW, and the maximum traction power in the CRH380BL in the 16-unit group is 18,400 kW. The "higher speed test train" uses a newly developed high-power traction system with a total traction power of 22,800 kW. Confrontation China does not need to develop more high-speed trains now France has developed a 574.8-km train, but it has not been put into use. China will not operate 500 km speed trains. The research direction of high-speed trains should be in terms of safety and reliability. For example, core technologies such as traction technology, brake technology, and pantograph technology have not yet been mastered in China. Let the train “open up and stop†is the direction that should be studied. Professor Zhao Jian, Beijing Jiaotong University It is necessary to develop high-speed trains Research and mass production are two concepts, R&D is to maintain the world's leading technology, and mass production is even more economical. At higher speeds, we must look at the match between the train and each system. The mastery of high-speed rail technology at higher speeds is conducive to the enhancement of the safety and reliability of the following vehicles at relatively low speeds, and also leaves more safety speed redundancy. China Academy of Railway Sciences, an expert who does not want to be named background The actual operation of the train does not need to be so high Afterwards, the average speed of motor vehicles will range from 300 to 350 kilometers. Under the current technological conditions, 350 kilometers per hour is the most economical and reasonable. The test train aims to make the intelligent degree of the EMU a new level and the safety monitoring to a higher level. It can not only support the forward-looking research of high-speed trains in China, but also consolidate the safety and reliability of high-speed trains for commercial operations. CSR Chairman Zhao Xiaogang Two-year project completion According to reports, the higher-speed test train project is under the deployment of the Ministry of Science and Technology and the Ministry of Railways, with the “commonality and system integration of the 11th Five-Year National Science and Technology Support Project†and “the key mechanical behavior of the national 973 Plan project with a speed of 500 kilometers per hour. "Research" relied on China South Locomotive Sifang Stock Co., Ltd. as the main body, based on the research platform opened by the National High-speed EMU Assembly Engineering Technology Research Center, and after more than two years of scientific research successfully completed. Earlier this year, the Ministry of Science and Technology and the Ministry of Railways organized 7 academicians and 14 industry experts to review the overall plan and engineering technology program for trains that passed higher speed tests. (Text / Beijing News) Bathroom Hardware Set Including Towel Bar , Towel Shelf, Towel Ring, Toilet Paper Holder, Robe Hook , Soap Holder and Glass Holder can choose. Bathroom Hardware Set,Bathroom Accessories Simple Set,Stainless Steel Hardware,Bath Hardware Accessories Set Kaiping Jenor Sanitary Ware Co., Ltd , https://www.sanitaryjenor.com
China's 500km/h high speed test train was born