青藏线双源动车组黏着适应性研究  

Adhesion Adaptability of Dual-Source-Powered Electric Multiple Unit on Qinghai−Xizang Line

作　　者：王波[1,2] 罗世辉 王晨[3] 曲天威 马卫华 雷成[2] WANG Bo;LUO Shihui;WANG Chen;QU Tianwei;MA Weihua;LEI Cheng(State Key Laboratory of Rail Transit Vehicle System,Southwest Jiaotong University,Chengdu 610031,China;Henan Engineering Research Center of Rail Transit Intelligent Security,Zhengzhou Railway Vocational&Technical College,Zhengzhou 451460,China;School of Mechanical Engineering,Shijiazhuang Tiedao University,Shijiazhuang 050043,China;CRRC Dalian Co.,Ltd.,Dalian 116022,China)

机构地区：[1]西南交通大学轨道交通运载系统全国重点实验室,四川成都610031 [2]郑州铁路职业技术学院河南省轨道交通智能安全工程技术研究中心,河南郑州451460 [3]石家庄铁道大学机械工程学院,河北石家庄050043 [4]中车大连机车车辆有限公司,辽宁大连116022

出　　处：《西南交通大学学报》2025年第1期214-224,共11页Journal of Southwest Jiaotong University

基　　金：国家自然科学基金项目(51575458);河南省智能安全工程技术中心开放性课题(2021KFJJ001);河北省高等学校科学技术研究项目(QN2021232)。

摘　　要：为了分析运行效率更高的双源动车组在青藏线(格尔木—拉萨段)运行的可行性,建立机车动力学模型并进行了验证;采用动力学方法研究了双源动车组机车(动车)和青藏线成熟运营的HXN3内燃机车在直线段、曲线段和坡道上的牵引黏着系数、牵引力、蠕滑率与速度之间的关系;通过对比2个机车的动力学响应,验证牵引工况下双源动车组的黏着特性.通过分析可以发现:1)机车的牵引黏着系数与机车的牵引力成正比,当车速在40~120km/h时,双源动车组机车的黏着系数由0.19降低至0.09,黏着富裕度则由59.0%提高至85.7%;2)在直线段和坡道情况下,双源动车组的黏着富裕度均大于HXN3机车,对适应恶劣外界环境引起的轮轨黏着下降能力更强,对高原环境的适应性更优;3)曲线段,忽略结构引起的黏降差异,R300m曲线时,双源动车组和HXN3型机车的黏降幅度分别为6.3%和6.8%,R800 m曲线时,HXN3型机车曲线黏降幅度为3.0%,而双源动车组低于限值,可以保证有足够的黏着.In order to analyze the feasibility of a dual-source-powered electric multiple unit(EMU)with enhanced operational efficiency on the Qinghai–Xizang Line(Golmud–Lhasa section),the dynamics model of EMU was established and verified.A dynamic method was adopted to study the relationship among the traction adhesion coefficients,traction force,creepage,and speed for the dual-source-powered EMU and the HXN3 internal combustion locomotive operating on the straight sections,curved sections,and ramps of the Qinghai–Xizang Line.The adhesion characteristics of dual-source-powered EMU under traction conditions were validated by comparing the dynamic responses of the two locomotives.The analysis finds that:1)The traction adhesion coefficients of the locomotives are proportional to their traction force.Moreover,within the speed range of 40-120 km/h,the adhesion coefficient of the dual-source-powered EMU decreases from 0.19 to 0.09,while the adhesion affluence increases from 59.0% to 85.7%.2)The adhesion affluence of the dual-source-powered EMU is superior to that of the HXN3 locomotive in both straight sections and ramps,thereby enhancing its ability to cope with low wheel-rail adhesion conditions in harsh external environments and exhibiting better adaptability in plateau environments.3)In the curved section,by ignoring the structure-induced adhesion reduction difference,the adhesion reduction amplitudes of the dual-source-powered EMU and HXN3 locomotive are 6.3% and 6.8%,respectively,at R300 m curve.At the R800 m curve,the HXN3 locomotive demonstrates an adhesion reduction amplitude of 3.0%,while the adhesion reduction amplitude of the dual-source-powered EMU is below the threshold value,ensuring sufficient adhesion.

关 键 词：高原铁路 内电双源 内燃机车 动力学 牵引黏着 

分 类 号：U262.0[机械工程—车辆工程]