Development of a Pulley-type Tensioning Device

도르래식 장력조정장치 개발

  • 이기원 (한국철도기술연구원, 전철전력연구실) ;
  • 조용현 (한국철도기술연구원) ;
  • 박영 (한국철도기술연구원)
  • Published : 2009.10.30

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.

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