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Y. Hori¹ and Y. Michitsuji²

¹Track Maintenance Technical Management Center, Facility Department, Railway Business Headquarters, East Japan Railway Company, Tokyo, Japan
²College of Engineering, Ibaraki University, Hitachi, Japan

doi:10.4203/ccc.7.6.13

Y. Hori, Y. Michitsuji, "Study on the Effect of Maintenance Conditions of Turnout for Switch Throwing Force", in J. Pombo, (Editor), "Proceedings of the Sixth International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Edinburgh, UK, Online volume: CCC 7, Paper 6.13, 2024, doi:10.4203/ccc.7.6.13

Keywords: turnout, switch, tongue rail, switch failure, track irregularities, switch throwing force, stretcher bar.

Abstract

Turnouts consist of complicated and movable structures, therefore the risk of failures is higher than a normal track. Though there are various causes of switch failures, the influence of track irregularities and maintenance conditions for switch failures is still unknown. To avoid the switch failures, it is required to study the influence between switch throwing force and track irregularities and maintenance conditions. In this paper, we make formulae to calculate the switch throwing force depending on the types of track irregularities and maintenance conditions and calculate them in a case as an example. The results showed that the influence of the vertical and lateral displacement of the area near the tip of the tongue rail, the lubricated condition on the slide baseplates and the over tensioning of a stretcher bar are significant in some cases.

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Front Page Browse CCC CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Conferences ISSN 2753-3239 CCC: 7 PROCEEDINGS OF THE SIXTH INTERNATIONAL CONFERENCE ON RAILWAY TECHNOLOGY: RESEARCH, DEVELOPMENT AND MAINTENANCE Edited by: J. Pombo Paper 6.13 Study on the Effect of Maintenance Conditions of Turnout for Switch Throwing Force Y. Hori¹ and Y. Michitsuji² ¹Track Maintenance Technical Management Center, Facility Department, Railway Business Headquarters, East Japan Railway Company, Tokyo, Japan ²College of Engineering, Ibaraki University, Hitachi, Japan doi:10.4203/ccc.7.6.13 Full Bibliographic Reference for this paper Y. Hori, Y. Michitsuji, "Study on the Effect of Maintenance Conditions of Turnout for Switch Throwing Force", in J. Pombo, (Editor), "Proceedings of the Sixth International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Edinburgh, UK, Online volume: CCC 7, Paper 6.13, 2024, doi:10.4203/ccc.7.6.13 Keywords: turnout, switch, tongue rail, switch failure, track irregularities, switch throwing force, stretcher bar. Abstract Turnouts consist of complicated and movable structures, therefore the risk of failures is higher than a normal track. Though there are various causes of switch failures, the influence of track irregularities and maintenance conditions for switch failures is still unknown. To avoid the switch failures, it is required to study the influence between switch throwing force and track irregularities and maintenance conditions. In this paper, we make formulae to calculate the switch throwing force depending on the types of track irregularities and maintenance conditions and calculate them in a case as an example. The results showed that the influence of the vertical and lateral displacement of the area near the tip of the tongue rail, the lubricated condition on the slide baseplates and the over tensioning of a stretcher bar are significant in some cases. download the full-text of this paper (PDF, 14 pages, 1273 Kb) go to the previous paper go to the next paper return to the table of contents return to the volume description
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