制动特性对重载列车纵向冲动影响的比较  

Influence of Braking Characteristics on Longitudinal Dynamics of Connected Train

作　　者：魏伟[1] 于海龙[1] 

机构地区：[1]大连交通大学交通运输与工程学院,辽宁大连116028

出　　处：《大连交通大学学报》2013年第4期1-6,共6页Journal of Dalian Jiaotong University

基　　金：铁道部科技计划资助项目(2012J012-J);辽宁省自然科学基金资助项目(20102016);辽宁省高等学校科研计划项目(LS2010030)

摘　　要：比较了目前两种常见的组合列车制动系统特性获取方法的差异,通过对比发现,两种方法得到的制动特性在平道常用全制动工况下,最大车钩力可产生48%的差异.列车制动特性主要表现为制动波传播特性和制动缸升压特性,其中制动缸升压特性的差异是造成两种方法计算结果较大差异的主要原因.组合列车中任一车辆的制动特性受所有机车排气的影响,制动系统仿真方法中考虑了多机车排气对列车中车辆的减压速度的影响,因此制动特性更接近于真实组合列车制动特性.而使用单编万吨列车制动试验特性插值计算组合列车制动特性方法没有考虑多机车排气影响,对列车纵向冲动分析结果会造成较大的误差.Brake system simulation and interpolation methods based on experiment results are compared for the connected train to investigation the heavy haul train coupler force. In full service application, there is 48% difference for the maximum coupler force between the two methods. Braking system characteristics manifest in two aspects, braking wave propagation speed and cylinder pressure increasing rate, and the pressure increasing rate of brake cylinder is the main factor leads to the difference. Because of all the vehicles are affected by the all locomotives effects on brake pipe pressure changing rate, which are taken into account by the brake system simulation method. While the interpolation method based on the experiment results ignores the multi-locomotive effects on brake pipe pressure changing rate, which will cause the difference of coupler force

关 键 词：重载列车 纵向动力学 车钩力 制动系统 仿真 

分 类 号：U270.1[机械工程—车辆工程]