1万t重载组合列车测力车钩布置优化  

Layout Optimization of Force-measuring Coupler for 10000Tons of Heavy Haul Train

作　　者：张羽帆 薛海[1] 和永峰 ZHANG Yufan;XUE Hai;HE Yongfeng(School of Mechatronic Engineering,Lanzhou Jiaotong University,Lanzhou 730070,China)

机构地区：[1]兰州交通大学机电工程学院,兰州730070

出　　处：《兰州交通大学学报》2024年第1期91-98,167,共9页Journal of Lanzhou Jiaotong University

基　　金：甘肃省教育厅高校教师创新基金项目(2023A-043);兰州交通大学天佑创新团队(TY202006);兰州交通大学青年科学基金(2022048)。

摘　　要：针对1万t重载组合列车纵向载荷线路测试时,测力车钩数量和位置布置不确定的问题,根据线路测试某运煤专线1万t重载组合列车16个车位的纵向载荷-时间历程,提取拉伸和压缩载荷的最大值、均方根值和标准差进行载荷特征分析,采用基于核密度估计的分位点外推方法,获得不同车位的谱级损伤。运用主成分分析法,将纵向载荷表征参数降维处理为4个综合表征参数。采用分层聚类方法,统计分析不同车位纵向载荷的共性特征,得到2~16类测力车钩布置的方案,综合考虑主成分分析、分层聚类以及车位载荷等因素,得出测力车钩数量与布置的优化结果:测力车钩最小数量4个即可满足线路试验要求,且布置在从控机车前位和后位各1个、列车尾部1个以及从控机车和尾车中央位置1个。The number and position of force-measuring couplers are uncertain in the longitudinal load on-track test of 10,000 tons of heavy haul train.The longitudinal load-time history of 10,000 tons heavy-haul train including 16 cars on the coal transportation railway is obtained according to the on-track test.The maximum value,root mean square value and standard deviation of tensile and compressive loads are extracted to analyze the load characteristics.Extrap-olation of quantile based on kernel density estimation was used to obtain the spectral damage of different gondola cars.The principal component analysis method was used to reduce the dimension of the longitudinal load character-ization parameters into 4 comprehensive characterization parameters.Using the hierarchical clustering method,the common characteristics of longitudinal loads of different gondola cars were statistically analyzed,and the layout scheme of 2~16 types of force-measuring couplers was obtained.Considering the factors of principal component a-nalysis,hierarchical clustering and the position of gondola cars,the optimization results of the number and distribu-tion of force-measuring couplers are obtained:the minimum number of force-measuring couplers is 4,which can meet the test requirements.These couplers are located at the front and rear of the slave locomotive,the rear of the train,and between the slave locomotive and tail locomotive.

关 键 词：重载列车 测力车钩 分位点外推 主成分分析 分层聚类 

分 类 号：U272.2[机械工程—车辆工程]