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Development of a Pulley-type Tensioning Device  

Lee, Ki-Won (한국철도기술연구원, 전철전력연구실)
Cho, Yong-Hyeon (한국철도기술연구원)
Park, Young (한국철도기술연구원)
Publication Information
Journal of the Korean Society for Railway / v.12, no.5, 2009 , pp. 663-669 More about this Journal
Abstract
In the electrical railway, the increase of tensions in an overhead contact lines is essential to speed-up of train, because current collection quality largely depends on the ratio of a wave propagation speed to a train speed. For Kyungbu high-speed line, a pulley-type tensioning device is required to have a tension variation of maximum 3%. Therefore we developed a pulley-type tensioning device in order to meet tension variation requirement of the high-speed tensioning device. To verify the performance of the developed device, a performance test, overload test and failure test were carried out according to the factory test procedure of the Kyung-Bu High-speed line. Furthermore, we also performed reliability performance through not only a fatigue test in a factory, but also on-line verification test in Chungbuk line for over 1 year. These tests verified that the tensioning device had applicability to a main line.
Keywords
Tensioning device; Overhead line;
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  • Reference
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