Running of sand carrying bag, the first test and sprint of the first low speed maglev railway in China

Recently, the first low and middle maglev express line in Changsha, Hunan, can be tightened to make final preparations for the last passenger test.

In order to imitate the quality of the passenger, carry on the true test, take the sand bag instead of the passenger's weight, monitor the operation condition of the load condition. In order to simulate in place, 180 sandbags were placed on the car, and each sand bag weighed about 25 kilograms. The total weight was 1080. The total weight was about 27 tons, which is just the weight of 363 passengers under full load.

It is reported that the Changsha maglev fast line of all 5 columns of maglev vehicles have been in place, 24 hours a day to maintain "online" uninterrupted debugging. If the commissioning is stable, is expected in early March will be able to map the test run, will be put into trial operation after the passenger. According to the technical staff of Hunan maglev company, heavy test purpose is to ensure that the train carrying capacity reaches the maximum when the train can still float up, pull, running steadily, it can safely stop.

At present, in an emergency braking condition, the parameter value of 100 kilometers per hour the train must stop the car within 297 meters of safety. The brake distance of Changsha maglev fast line is 249 meters in test, and the result of the test is good.

The so-called "run by graph" means that the maglev train passengers and crew are strictly operated according to the official opening process standard operation, departure time, departure clearance, driving speed and stopping time, so as to ensure train punctuality and failure rate.

The Changsha maglev express line connects Changsha train south station and Changsha Huanghua Airport, with a total length of 18.5 kilometers. It started construction in May 2014, with a total investment of over 4 billion 200 million yuan. By the end of 2015, Changsha maglev express acceptance, put into trial operation.

After completing all the debugging, it will be put into trial operation. At that time, passengers will take the maglev train from Changsha high speed rail south station and arrive at Huanghua Airport in about 10 minutes. The integrated transport hub of the central region will be constructed.

According to the chief expert Peng Qibiao Chinese Zhongche developed maglev is introduced, the maglev train has many advantages. Because there is no friction and vibration of wheel and rail, the noise at speed of 80 kilometers per hour is only about 70 decibel, so that vehicles can be passed through the windows of the building 10 meters away, and the personnel in the building are not easy to notice. At the same time, the minimum turning radius is only 50 meters, which is only 1/2 of the subway. It is very suitable to walk through the buildings in the urban area and avoid the demolition to the maximum.

This is the first China maglev railway has completely independent intellectual property rights, using the name "maglev train chasers". The number of units by car Zhuzhou Electric Locomotive Ltd joint research and development, design for a maximum speed of 100 kilometers.

Liu Youmei Chinese Academy of engineering, said the development of Changsha low-speed maglev train project success, the Chinese rail transportation industry host enterprises and industry chain, to overcome the low speed maglev train system integration technology, to fill the Chinese low speed maglev independent intellectual property rights of the engineering and industrial application blank. This makes China the only 4 country in the world to master this technology. It has a very important social benefit, significant promotion and demonstration effect.

The medium and low speed maglev train with China's independent intellectual property rights has a high performance price ratio. The cost of the magnetic levitation line is 150 million to 250 million yuan per kilometer, far below the cost of 500 million to 800 million yuan per kilometre of the subway, and the cost of maintenance and maintenance in the later period is greatly reduced.

In addition, China's Low-speed Maglev express line has attracted the attention of more than 10 large and medium-sized cities at home and abroad, and is expected to become a rail transit vehicle that provides green, intelligent and environmentally friendly cities in the world after high-speed rail.