Theoretical and Experimental Research on Switching Optimization of No. 9 Single Turnout with 60-kg/m Rails

Based on the necessity of optimizing the structure of No. 9 single turnouts of 60-kg/m rails, we addressed the issues associated with existing turnout switching design methods. Based on finite element analysis, we established a refined calculation model for turnout switching. The model can determine...

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Autores principales:	Pu Wang, Shuguo Wang, Zhenhua Zhao, Daolin Si
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	No. 9 single turnout turnout switching calculation model actual plane alignment of separated switch rail traction point stroke optimization turnout switching test Mechanical engineering and machinery TJ1-1570
Acceso en línea:	https://doaj.org/article/cf7bf3383e074531bdade9da799a654b
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spelling	oai:doaj.org-article:cf7bf3383e074531bdade9da799a654b2021-11-25T18:12:22ZTheoretical and Experimental Research on Switching Optimization of No. 9 Single Turnout with 60-kg/m Rails10.3390/machines91102942075-1702https://doaj.org/article/cf7bf3383e074531bdade9da799a654b2021-11-01T00:00:00Zhttps://www.mdpi.com/2075-1702/9/11/294https://doaj.org/toc/2075-1702Based on the necessity of optimizing the structure of No. 9 single turnouts of 60-kg/m rails, we addressed the issues associated with existing turnout switching design methods. Based on finite element analysis, we established a refined calculation model for turnout switching. The model can determine the plane alignment of a switch rail separated from the stock rail based on the actual force acting upon the switch rail. The obtained plane alignment is consistent with the actual situation and is thus reliable. Based on the established turnout switching model, the minimum flangeway width and dynamics between the strokes of the first and second traction points under different conditions were analyzed by numerical simulations. Accordingly, we propose an optimized scheme that takes 160 mm and 85 mm as the stroke value for the first and second traction points, respectively. The scheme helps to meet the requirements for minimum flangeway width while making the deformation of the switch rail more even and therefore minimizing the traction power. Based on the proposed design, trial production and laying of the new No. 9 single turnout with a 60-kg/m rail was conducted, and a switching test was performed. The switching forces at the first and second traction points of the new No. 9 turnout were approximately 1200 and 2000 N, respectively, which were higher than those of existing No. 9 turnouts with 60-kg/m steel rails. Besides, the minimum flangeway width satisfies the requirement for safe vehicle passage with a safety margin of 3–5 mm. The test results proved the effectiveness of the proposed turnout switching design method and parameter optimization scheme.Pu WangShuguo WangZhenhua ZhaoDaolin SiMDPI AGarticleNo. 9 single turnoutturnout switching calculation modelactual plane alignment of separated switch railtraction point stroke optimizationturnout switching testMechanical engineering and machineryTJ1-1570ENMachines, Vol 9, Iss 294, p 294 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	No. 9 single turnout turnout switching calculation model actual plane alignment of separated switch rail traction point stroke optimization turnout switching test Mechanical engineering and machinery TJ1-1570
spellingShingle	No. 9 single turnout turnout switching calculation model actual plane alignment of separated switch rail traction point stroke optimization turnout switching test Mechanical engineering and machinery TJ1-1570 Pu Wang Shuguo Wang Zhenhua Zhao Daolin Si Theoretical and Experimental Research on Switching Optimization of No. 9 Single Turnout with 60-kg/m Rails
description	Based on the necessity of optimizing the structure of No. 9 single turnouts of 60-kg/m rails, we addressed the issues associated with existing turnout switching design methods. Based on finite element analysis, we established a refined calculation model for turnout switching. The model can determine the plane alignment of a switch rail separated from the stock rail based on the actual force acting upon the switch rail. The obtained plane alignment is consistent with the actual situation and is thus reliable. Based on the established turnout switching model, the minimum flangeway width and dynamics between the strokes of the first and second traction points under different conditions were analyzed by numerical simulations. Accordingly, we propose an optimized scheme that takes 160 mm and 85 mm as the stroke value for the first and second traction points, respectively. The scheme helps to meet the requirements for minimum flangeway width while making the deformation of the switch rail more even and therefore minimizing the traction power. Based on the proposed design, trial production and laying of the new No. 9 single turnout with a 60-kg/m rail was conducted, and a switching test was performed. The switching forces at the first and second traction points of the new No. 9 turnout were approximately 1200 and 2000 N, respectively, which were higher than those of existing No. 9 turnouts with 60-kg/m steel rails. Besides, the minimum flangeway width satisfies the requirement for safe vehicle passage with a safety margin of 3–5 mm. The test results proved the effectiveness of the proposed turnout switching design method and parameter optimization scheme.
format	article
author	Pu Wang Shuguo Wang Zhenhua Zhao Daolin Si
author_facet	Pu Wang Shuguo Wang Zhenhua Zhao Daolin Si
author_sort	Pu Wang
title	Theoretical and Experimental Research on Switching Optimization of No. 9 Single Turnout with 60-kg/m Rails
title_short	Theoretical and Experimental Research on Switching Optimization of No. 9 Single Turnout with 60-kg/m Rails
title_full	Theoretical and Experimental Research on Switching Optimization of No. 9 Single Turnout with 60-kg/m Rails
title_fullStr	Theoretical and Experimental Research on Switching Optimization of No. 9 Single Turnout with 60-kg/m Rails
title_full_unstemmed	Theoretical and Experimental Research on Switching Optimization of No. 9 Single Turnout with 60-kg/m Rails
title_sort	theoretical and experimental research on switching optimization of no. 9 single turnout with 60-kg/m rails
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/cf7bf3383e074531bdade9da799a654b
work_keys_str_mv	AT puwang theoreticalandexperimentalresearchonswitchingoptimizationofno9singleturnoutwith60kgmrails AT shuguowang theoreticalandexperimentalresearchonswitchingoptimizationofno9singleturnoutwith60kgmrails AT zhenhuazhao theoreticalandexperimentalresearchonswitchingoptimizationofno9singleturnoutwith60kgmrails AT daolinsi theoreticalandexperimentalresearchonswitchingoptimizationofno9singleturnoutwith60kgmrails
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Theoretical and Experimental Research on Switching Optimization of No. 9 Single Turnout with 60-kg/m Rails

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