Abstract China's 500km/h EMUs are about to start. The news of the blackout at the Southwest Jiaotong University in Chengdu was revealed. According to the blackout notice issued by the Logistics Support Department of Southwest Jiaotong University, the National Key Laboratory of Traction Power is carrying out a 500-kilometer Chinese standard motor train at a speed of ...
The EMUs with a speed of 500 kilometers per hour are going to run. The news of the blackout at the Southwest Jiaotong University in Chengdu was revealed.

According to the notice of power outage issued by the Logistics Support Department of Southwest Jiaotong University, the State Key Laboratory of Traction Power conducted a test of 500 km/h Chinese standard EMU, and the application for over-load power protection by the user was approved by the school. It is scheduled for: March 25, 2015 23:55-26 04:00; March 26th 23:55-27 04:00; Jiuli Campus Yuchengzhai 12, 13 buildings, 15 buildings, three canteens, swimming pool, Zhongda A, Qida, ICBC, BOC, and other regions cooperated with power outages.

Observer Network noted that the laboratory mentioned in the notice is the State Key Laboratory of Traction Power of Southwest Jiaotong University. It was established in 1989 and completed in 1993. It has the second and the first locomotive in Asia (four axes). The whole vehicle rolling vibration test bench can simulate the test of locomotives with a speed of 400 kilometers per hour. In 2003, the newly completed test rig became the largest, most functional, and most technologically advanced locomotive vehicle (six-axis) rolling vibration test rig that can achieve internal and external rail speed differences.

In October 2010, with the official launch of the National Laboratory of Rail Transit, Southwest Jiaotong University, the simulation speed of the test rig was increased to 600km/h, creating the world's highest speed for the simulation test of railway locomotives. From the initial speed of tens of kilometers to the creation of the 486.1 km world railway operating train speed record of the CRH380A EMU, these vehicles have to be tested in this laboratory before the front line "starting".

It is understood that the Southwest Jiaotong University Rail Transit Laboratory is the world's most advanced high-speed train research platform owned by China, and is expected to become the highest level of “National Laboratories” in China. The total construction area of ​​the laboratory is 44,200 square meters, and the current 11,000 square meters basic research experimental platform project has been basically completed. The laboratory is divided into three research platforms: high-speed train service performance research experimental platform, basic research experimental platform, digital simulation platform. Zhang Weihua, director of the State Key Laboratory of Traction Power at Southwest Jiaotong University (Executive Director of the Rail Transit Laboratory), said that the digital simulation platform will be developed into a safety monitoring center in the next step, predicting and ensuring the safe operation of each train, which will be a high-speed train for China. Smooth and safe operation provides a strong guarantee.

The notice did not disclose the model of the EMU to be tested. According to the analysis, it should be the “higher speed test train” produced by CSR Sifang Co., Ltd. (located in Qingdao). This type of train will be rolled off on December 25, 2011, which will further consolidate the safety, reliability and test platform of high-speed trains for commercial operation. It also marks a significant achievement in the forward-looking research of China's high-speed trains. China's high-speed train technology system has an important significance in promoting the development of high-speed train technology in the world.

This "higher speed test train" is called "CIT500" by fans. The test train is based on the “National 973 Plan Project – Research on Key Mechanical Behavior of High Speed ​​Trains with a Speed ​​of 500 Kilometers”, and the head and tail shapes are different. The design of the front is inspired by the ancient Chinese weapon "sword", which highlights the pointed wedge structure and reduces the resistance of the head car; the shape of the rear end follows the shape of the CRH380A, and the lift of the tail car is close to zero. The test train is composed of 6 vehicles, all of which are powered vehicles.

Zhang Weihua once said that the test speed of the trains developed by this latest technology will exceed the speed of all current EMU trains in China.

Zhang Weihua introduced that the basic theoretical research under the operating environment of 500 km/h is an area that has not been thoroughly explored in the world's high-speed railway industry. At this high speed, the traditional cognitive mechanics and behavioral limit states are unknown. The test train is based on the National 973 Program - the study of the key mechanical behavior of the 500-kilometre high-speed train, after more than two years of scientific research. It is an important achievement in exploring the critical point and limit value of high-speed train system and improving the basic theoretical level of high-speed trains in China.

The "higher speed test train" bogie is jointly developed by Southwest Jiaotong University and Qingdao Sifang, and all parameters are determined by Southwest Jiaotong University. The bogie is like the two legs of a train. The most important part of the train, the first step can run, and the second step is to ensure safety. "Run" speeds of more than 500 kilometers per hour, the two legs of the car are very important, must be stable, if not stable, can not run so fast, which requires high dynamic performance, laboratory measurements will also It is to ensure the high stability, high stability and high safety of the test train.

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