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Exploration of key traction-running equipment and its problems on heavy-haul trains and research on technology development

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Transportation Safety and Environment 2020年第3期2卷 161-182页

作者： Chunyang Chen Wei Li Youmei Liu Xiang Wei Central South University School of Traffic&Transportation EngineeringChangsha410075China CRRC Zhuzhou Locomotive Co. Ltd.Zhuzhou412001China Daqin Railway Co. Ltd.Institute of Science and TechnologyTaiyuan030013China

In recent years,heavy-haul train technology has seen a number of innovations worldwide,and train traction-running technology has also made great progress,resulting in a rich pool of experience and a range of promising *** paper summarizes the key technologies of traction running in heavy-haul combined trains,especially locomotive and rolling-stock technology,traction technology,braking technology,control technology,communication technology and safety *** the same time,based on an analysis of practical applications,this paper further explores the main problems and urgent needs of traction equipment on heavy-haul *** an eye to the future,the heavy-haul railway system will develop in the direction of informatization,automation and intelligence,in order to build a greener,more energy-saving,safer and more efficient *** paper therefore looks forward to the technical developments of heavy-haul combined trains,and provides a reference for the development of heavy-haul railways.

关键词： heavy-haul combined train locomotive remote multi-traction traction-running safety train equipment train dynamic performance

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Simulation study on the influence of longitudinal dynamic force on extreme-long heavy-haul trains

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Railway Sciences 2023年第4期2卷 495-513页

作者： Chongyi Chang Gang Guo Wen He Zhendong Liu Railway Science and Technology Research and Development Center China Academy of Railway Sciences Corporation LimitedBeijingChina Department of Engineering Mechanics KTH Royal Institute of TechnologyStockholmSweden

Purpose–The objective of this study is to investigate the impact of longitudinal forces on extreme-long heavy-haul trains,providing new insights and methods for their design and operation,thereby enhancing safety,operational efficiency and track system ***/methodology/approach–A longitudinal dynamics simulation model of the super long heavy haul train was established and verified by the braking test data of 30,000 t heavy-haul combination train on the long and steep down grade of Daqing *** simulation model was used to analyze the influence of factors on the longitudinal force of super long heavy haul ***–Under normal conditions,the formation length of extreme-long heavy-haul combined train has a small effect on the maximum longitudinal coupler force under full service braking and emergency braking on the straight *** slope difference of the long and steep down grade has a great impact on the maximum longitudinal coupler force of the extreme-long heavy-haul *** the condition that the longitudinal force does not exceed the safety limit of 2,250 kN under full service braking at the speed of 60 km/h the maximum allowable slope difference of long and steep down grade for 40,000 t super long heavy-haul combined trains is 13‰,and that of 100,000 t is only 5‰.Originality/value–The results will provide important theoretical basis and practical guidance for further improving the transportation efficiency and safety of extreme-long heavy-haul trains.

关键词： heavy-haul combined train Longitudinal dynamics train length Locomotive synchronization control Slope difference

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