The autonomous new grinding car cracks the curve and turnout rail grinding problem
Science and Technology Daily News (reporter Li Liyun correspondent Zhang Xuepeng Zhang Tongwei) "The medium-sized grinding machine with independent intellectual property rights that we have developed has filled the domestic gap and has been officially promoted and used in the national road. On December 10, Wang Ziguo, secretary of the party committee and chairman of the board of directors of Harbin Railway Industry Group Co., Ltd., a subsidiary of China Railway Harbin Bureau Group Co., Ltd., told reporters. Recently, the company received information that China Railway Guangzhou Bureau Group Co., Ltd. continued to add new orders on the basis of the original order of 7 rail grinding vehicles. So far, in just two years, the company has sold 36 GMC-12II rail grinding vehicles across the country's railways.
According to Liu Shengyong, deputy general manager of the company, the head of the R&D team, the steel rail will produce damage such as the fat edge of the rail and the peeling off the block of the rail surface under the repeated rolling of the locomotive, causing the train to shake the car and shake the car. Through rail grinding and repair, it can not only extend the service life of the rail, but also effectively improve the comfort of passengers and the safety of train operation.
Previously, domestic rail grinding was mainly divided into two types: large grinding trucks and artificial small grinders. Large grinding trucks are suitable for "long" linear rail grinding, and there is a waste of resources in the grinding of small radius curves and turnout sections of steel rails. To this end, China's small radius curve and turnout lots are generally used in small manual grinding machines for operation.
In response to this urgent need in the market, in 2010, the company officially set up a project and set up a research and development team to start research and development. After 10 years of research and development, in 2020, the GMC-12II. type rail grinding car obtained 6 national patents such as utility model, computer software copyright, and design. This medium-sized grinding truck weighs 9 tons, with 12 grinding heads, the shape is "small", with three-dimensional automatic positioning function, double rail can be sanded at the same time, but also has energy saving, environmental protection, high precision and outstanding performance, a single minimum wear and consumption of 0.1mm, the efficiency is 20 times that of the manual grinder.
After the Harbin Bureau Group Company took the lead in trialing, the characteristics of the grinding car that are not affected by temperature differences and geographical influences have attracted the attention of other group companies of the railway system. In 2020, the grinding vehicle "crossed the mountains and mountains" and "crossed the ocean", and was successively used in the engineering sections of the Guangzhou Bureau, wuhan bureau, Nanchang bureau and Xi'an bureau group company. This grinding car has strong cold resistance and heat resistance, can cross the "ice and fire double day", and still has stable performance and "full horsepower" under the temperature difference of 80 degrees Celsius.
Wang Ziguo said that the company will continue to increase research and development efforts, so that this polishing car will not only help China's railways, but also help the safe operation of subways and help the high-quality development of urban rail transit across the country.
Source: Science and Technology Daily