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Put on "damping shoes" for the rails
[Abstract]:
The three major components of metal, rubber and nylon are combined into one set of double-layer non-linear dampers through a unique “self-locking mechanism”. The shock absorber manufactured by Zhangzhou Huaying Railway Equipment Co., Ltd. has been successfully applied in the construction of urban rail transit facilities such as Guangzhou Line 6, Line 9, Lanzhou Line 1, and Xi'an Line 4.
Zhou Jinguo, the person in charge of the company, said that the vibration-damping products they produced under the rails are like people wearing shoes with vibration-damping effect, which can effectively reduce the noise generated by the friction between rails and trains, and increase the comfort of residents and passengers around the railway. degree.
Some rail transits are built in urban areas for a long period of time. Trains need to travel around dense buildings, and the noise is very large. The equipment produced by Zhangzhou Huaying effectively alleviated this problem. Experiments have shown that even after 3 million fatigue tests, the “Huawei Secret” damper has no damage and cracking, and can reduce noise by at least 8 dB. What are the secrets of “Huawei Secret System”? In Zhou Jinguo's view, transforming products from mature products with low technological content to high value-added technology and new products will not only gain more profit margins, but also boost the development of high-end equipment manufacturing industry.
Cangzhou Huasheng Railway Equipment Co., Ltd. is located in Dongguang Development Zone. It has been producing railway fasteners for more than 20 years. Its products account for 50% of the domestic market share and are exported to Thailand, Myanmar, Vietnam, India and Malaysia. They are also suppliers of railway fasteners from Siemens AG and Germany's Forslow. The Beijing-Shanghai line, the Beijing-Kowloon line, the Beijing-Guangzhou line, the Longhai line, the Qinghai-Tibet line, and the urban subways and light rails in Beijing, Tianjin, Nanjing, Shanghai, Guangzhou, etc. all have a complete set of fastener products produced by Zhangzhou Huasheng. Complete the supply of various specifications of 25,000 kilometers of national railway and urban subway transportation lines.
In 2013, the company grasped the high-end market opportunities and relied on the relevant technology of the China Railway Science Research Institute to prepare an upgraded version of the fasteners – a double-layer nonlinear damper. In 2015, on the basis of the original factory area, they invested another 500 million yuan to build a double-layer non-linear vibration-damping equipment project, which was put into production in the same year.
In order to improve the detection capability of product vibration and noise, the company invested 1 million yuan to build a laboratory and purchase related test equipment. The 50-year-old Wang Ruquan is the head of the laboratory, and he records various data in this book. “The raw materials purchased from Huaigang, Shagang and other steel groups need to detect the content of harmful elements. The content of sulfur and phosphorus is required to be less than 0.02% and 0.05% respectively.” Wang Ruquan said that from raw materials entering the factory to product molding, a total of testing is required. 26 times. In Wang Ruquan’s impression, there were only four companies producing such ordinary railway fasteners nationwide more than a decade ago, and Hua Tuo was one of them. More than ten years later, Huaying has become one of the few companies in the country to produce urban traffic vibration damping equipment with its own innovative spirit and "artisan" attitude.
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