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题目:缩小货车车钩纵向间隙的研究院系:网络教育学院专业:车辆工程姓名:季红星指导教师:米彩盈西南交通大学网络教育学院院系网络教育学院专业车辆工程年级2005-5学号05922613姓名季红星学习中心北京学习中心指导教师米彩盈题目缩小货车车钩纵向间隙的研究指导教师评语是否同意答辩过程分(满分20)指导教师(签章)评阅人评语评阅人(签章)成绩答辩组组长(签章)年月日毕业论文任务书班级2005-5学生姓名季红星学号05922613发题日期:2007年9月17日完成日期:2007年11月18日题目缩小货车车钩纵向间隙的研究1、本论文的目的、意义:发展高速重载运输是我国提高铁路运输协运力、运量的主要手段,铁路运输力、运量的提高对我国铁路运输业的发展,乃至整个国民经济的发展都有着十分重要的意义。然而,随着重载列车的重量不断加大以及列车编组长度不断增加和车速的不断提高,致使列车在运行过程中,前后车辆的速度增大,也将造成列加严重的纵向冲击。这种冲击会产生很大的纵向车钩力,损坏货物,加剧钩缓等车辆部件的直接损伤和疲劳损坏,严重时造成车钩断裂,列车分离等事故。缩小货车车钩纵向间隙对列车运行纵向动力学性能具有重要影响,是我国发展重载列车所不可回避的课题,也是实现铁路跨越式发展的需求之一。学生应完成的任务:对货物列车(特别是重载货物列车)在运行过程中产生的纵向力的分析研究,并根据国内外已有的关于纵向动力学方面的研究结果的基础上,论证减少F13车钩纵向间隙的必要性及可行性。2、论文各部分内容及时间分配:(共9周)第一部分查阅关于论文的相关资料,列出论文提纲,提交指导老师(2周)第二部分论文写作,初稿形成,提交指导老师(4周)第三部分论文修改、完成、定稿(3周)评阅其答辩(周)3、参考文献1.张进德.我国铁路货车技术近期发展趋向商榷.铁道车辆.2001.2.马大炜.关于5000t级重载列车车钩力的研究.铁道车辆.1995.3.范佩鑫,陈成元.重载组合列车纵向动力学的实验研究及理论分析.西南交通大学学报.1999.4.严隽玺.车辆工程.中国铁道出版社.2003.5.章音.车辆业务.中国铁道出版社.2003.6.饶忠.列车制动.中国铁道出版社.2003.备注指导教师:年月日审批人:年月日诚信承诺一、本论文是本人独立完成;二、本论文没有任何抄袭行为;三、若有不实,一经查出,请答辩委员会取消本人答辩资格。承诺人(钢笔填写):年月日目录摘要···························································(Ⅰ)Abstract····························································(Ⅱ)第一章:绪论························································(1)1.1--引言··························································(1)1.2--货车车钩的现状研究············································(2)1.2.1--车钩的定义··············································(2)1.2.2--车钩的定义·············································(3)1.2.3--车钩的发展历程··········································(3)1.3--列车纵向动力学研究历史及现状··································(3)1.4--缩小车钩纵向间隙的意义和重要性································(5)第二章:缩小13号车钩纵向间隙的必要性····························(6)2.1--缩小13号车钩纵向间隙的必要性·································(6)2.2--车钩的纵向间隙对列车纵向冲击力的影响··························(7)2.3--运行安全对列车纵向冲击力的限制································(9)第三章:缩小13号车钩的纵向间隙的可行性··························(12)3.1--缩小13号车钩的纵向间隙的技术可行分析·························(12)3.2--缩小13号车钩的主要技术指标···································(13)3.3--缩小13号车钩的纵向间隙的经济可行性分析·······················(14)第四章:小间隙车钩动力学性能分析·································(15)4.1--小间隙车钩对列车启动工况的影响································(15)4.2--小间隙车钩对列车常用制动工况的影响····························(17)4.3--小间隙车钩对列车紧急制动工况的影响····························(19)4.4--小间隙车钩对列车缓解工况的影响································(22)结束语····························································(26)致谢····························································(27)参考文献·····························································(28)西南交通大学网络教育毕业设计(论文)I摘要综合国内外重载列车的科研成果,并行重载列车需要解决很多技术问题,结合我国线路机车车辆的具体情况,其中最为重要的是如何降低重载列车运行过程中产生的纵向冲击力,以保证列车的运行安全,减少车辆零部件的损坏。车辆配件的损坏又直接影响到车辆运行的安全系数,不但缩短了车辆及其个别配件的使用寿命,而且又费工费时,增加工人劳动工作量;还缩短了车辆的运转周期,给铁路运输造成不必要的经济损失。车辆的纵向间隙是影响列车纵向冲击力的6大因素中较为重要的因素,车辆的纵向间隙主要集中在车钩缓冲装置上,而车钩的形状又是绝对性的因素;车辆纵向间隙可造成列车的纵向力成几倍的增减,因此,缩小车辆的纵向间隙可极大幅度地降低列车的纵向冲击力。通过分析13号车钩纵向间隙的所产生的纵向冲击以及车钩纵向间隙对货车车钩纵向冲击力的影响,并根据计算机模拟和样板实验的结果以及对13号小间隙防脱车钩的纵向动力学性能分析研究,通过比较各个车钩间隙下列车最大纵向车钩力和列车最大加速度的数值,得出小间隙车钩在列车启动工况、常用制动工况、紧急制动工况、缓解工况的纵向动力学性能都较原有车钩性能优异的结论。并在此基础上掌握列车最大纵向力的数值及分布,找出降低最大纵向力的方法,保证重载列车安全、平稳运行。总之,减少13号车钩纵向间隙不仅是高速、重载列车安全运行的需要,也是制动系统、车辆缓冲装置等部件进行优化设计的需要。关键词:车钩纵向间隙分析研究西南交通大学网络教育毕业设计(论文)IIAbstractTheheavyhaultrainsandforeignresearchresults,Parallelladentrainsneedtoresolvemanytechnicalproblems,LinerollingstockinlightofChina'sspecificconditions.Oneofthemostimportantishowtoreduceheavytraintheprocessofverticalimpact,inordertoensurethesafeoperationoftrains,reducevehiclepartsdefects.Thedamagedvehicleaccessoriesalsodirectlyaffectsthesafetyfactorofvehicleoperation,thevehicleswillnotonlyshortenthelifeofitsindividualparts,butalsoforthetime-consuming,laborworkersincreasedworkload;alsoshortenedthecycleoftheoperationofvehicles,nottocreaterailtransportthenecessaryeconomiclosses.Theverticalclearancevehicleisaffectedtrainslongitudinalimpactofthesixmajorfactorinthemoreimportantfactors,theverticalclearancevehiclesmainlyconcentratedinthebufferdevicecoupler,andtheshapeiscouplerabsolutefactorverticalclearancevehiclescancausethetrainlongitudinalchangesseveraltimesintoforce,therefore,narrowverticalclearancevehiclescanbeverysubstantiallyreducethelongitudinalimpactofthetrain.Throughanalysisonthe13thcouplerverticalspacegeneratedbythelongitudinalimpactandcouplerverticalclearanceofgoodsvehiclescouplerverticalimpactof,andinaccordancewithcomputersimulationandtheexperimentalresultsandthemodelofthe13thsmallspace-couplerfromthelongitudinaldynamicsPerformanceAnalysisresearch,bycomparingvariouscouplerlargestverticalclearanceunderthetrainandthetraincouplerofthelargestaccelerationwiththe35-couplerthatsmallgapinthetrainstartedworkingconditions,whichareoftenusedbrakingconditions,emergencybrakingconditions,themitigationconditionsarelongitudinaldynamicperformancecoupleroutstandingperformancecomparedwiththepreviousconclusions.Onthisbasis,thelargestlongitudinalforcetrainmasterNumericalanddistribution,reducethemaximumverticalforcetoidentifywaystoensurethatheavytrainsecurity,stableoperation.Inshort,thereductiononthe13th
本文标题:缩小货车车钩纵向间隙的研究
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