Research on Simulation Calculation of the Safety of Tight-Lock Coupler Curve Coupling

Once a train breaks down on a busy railway line, it will affect the whole traffic network. However, when a rescue locomotive is hooked up to the broken train for towing it to the next station, it is common that coupling dislocation occurs, which results in damages to couplers and the driver’s cab. T...

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Autores principales:	Hai Zhang, Chenyu Zhang, Fengtao Lin, Xiugang Wang, Gengzhe Fu
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	curve link tight-lock coupler geometric analytic method dynamic calculation working conditions Mathematics QA1-939
Acceso en línea:	https://doaj.org/article/5d0693fed44247e9aa6d0b176c18f3ed
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spelling	oai:doaj.org-article:5d0693fed44247e9aa6d0b176c18f3ed2021-11-25T19:05:53ZResearch on Simulation Calculation of the Safety of Tight-Lock Coupler Curve Coupling10.3390/sym131119972073-8994https://doaj.org/article/5d0693fed44247e9aa6d0b176c18f3ed2021-10-01T00:00:00Zhttps://www.mdpi.com/2073-8994/13/11/1997https://doaj.org/toc/2073-8994Once a train breaks down on a busy railway line, it will affect the whole traffic network. However, when a rescue locomotive is hooked up to the broken train for towing it to the next station, it is common that coupling dislocation occurs, which results in damages to couplers and the driver’s cab. To ensure the safety of the trains during the coupling, it becomes crucial to determine whether they can be linked safely and automatically under different line conditions. In this paper, position and pose of the rescue locomotive and the broken train on the line are calculated by geometric analytical calculation method, which determines the position relation of their couplers. Then a so-called “coupling characteristic triangle” was proposed to determine whether trains can be safely and automatically linked on the railway line. The triangles are constructed by the peak points of the couplers head of the front vehicle and the rear one and border lines of secure coupling area on the couplers. By judging the shape of the triangle, it can directly judge whether their couplers can be connected successfully. The method has been applied to check the safety of the trains during coupling on the Nanchang urban railway Line 4. The results show that the maximum swing angle of the coupler reaches 17.3957° in the straight–curve section with a radius of 325 m. At this time, coupling is most difficult, and trains need to be connected manually through the tractor; all the calculation results are verified in the actual line. By comparing different calculation methods for judging coupling safety, it is shown that the method proposed in this paper is accurate, efficient, and users can judge coupling safety more intuitively.Hai ZhangChenyu ZhangFengtao LinXiugang WangGengzhe FuMDPI AGarticlecurve linktight-lock couplergeometric analytic methoddynamic calculationworking conditionsMathematicsQA1-939ENSymmetry, Vol 13, Iss 1997, p 1997 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	curve link tight-lock coupler geometric analytic method dynamic calculation working conditions Mathematics QA1-939
spellingShingle	curve link tight-lock coupler geometric analytic method dynamic calculation working conditions Mathematics QA1-939 Hai Zhang Chenyu Zhang Fengtao Lin Xiugang Wang Gengzhe Fu Research on Simulation Calculation of the Safety of Tight-Lock Coupler Curve Coupling
description	Once a train breaks down on a busy railway line, it will affect the whole traffic network. However, when a rescue locomotive is hooked up to the broken train for towing it to the next station, it is common that coupling dislocation occurs, which results in damages to couplers and the driver’s cab. To ensure the safety of the trains during the coupling, it becomes crucial to determine whether they can be linked safely and automatically under different line conditions. In this paper, position and pose of the rescue locomotive and the broken train on the line are calculated by geometric analytical calculation method, which determines the position relation of their couplers. Then a so-called “coupling characteristic triangle” was proposed to determine whether trains can be safely and automatically linked on the railway line. The triangles are constructed by the peak points of the couplers head of the front vehicle and the rear one and border lines of secure coupling area on the couplers. By judging the shape of the triangle, it can directly judge whether their couplers can be connected successfully. The method has been applied to check the safety of the trains during coupling on the Nanchang urban railway Line 4. The results show that the maximum swing angle of the coupler reaches 17.3957° in the straight–curve section with a radius of 325 m. At this time, coupling is most difficult, and trains need to be connected manually through the tractor; all the calculation results are verified in the actual line. By comparing different calculation methods for judging coupling safety, it is shown that the method proposed in this paper is accurate, efficient, and users can judge coupling safety more intuitively.
format	article
author	Hai Zhang Chenyu Zhang Fengtao Lin Xiugang Wang Gengzhe Fu
author_facet	Hai Zhang Chenyu Zhang Fengtao Lin Xiugang Wang Gengzhe Fu
author_sort	Hai Zhang
title	Research on Simulation Calculation of the Safety of Tight-Lock Coupler Curve Coupling
title_short	Research on Simulation Calculation of the Safety of Tight-Lock Coupler Curve Coupling
title_full	Research on Simulation Calculation of the Safety of Tight-Lock Coupler Curve Coupling
title_fullStr	Research on Simulation Calculation of the Safety of Tight-Lock Coupler Curve Coupling
title_full_unstemmed	Research on Simulation Calculation of the Safety of Tight-Lock Coupler Curve Coupling
title_sort	research on simulation calculation of the safety of tight-lock coupler curve coupling
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/5d0693fed44247e9aa6d0b176c18f3ed
work_keys_str_mv	AT haizhang researchonsimulationcalculationofthesafetyoftightlockcouplercurvecoupling AT chenyuzhang researchonsimulationcalculationofthesafetyoftightlockcouplercurvecoupling AT fengtaolin researchonsimulationcalculationofthesafetyoftightlockcouplercurvecoupling AT xiugangwang researchonsimulationcalculationofthesafetyoftightlockcouplercurvecoupling AT gengzhefu researchonsimulationcalculationofthesafetyoftightlockcouplercurvecoupling
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Research on Simulation Calculation of the Safety of Tight-Lock Coupler Curve Coupling

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