万吨重载列车提速试验及动力学性能分析  

Speed-raising Test and Dynamic Performance Analysis of Ten Thousand Tons Heavy-haul Trains

作　　者：呼枭 HU Xiao(CNNE Xinshuo Railway Co.,Ltd.,Ordos 017000,China)

机构地区：[1]国能新朔铁路有限责任公司,内蒙古鄂尔多斯017000

出　　处：《机械制造与自动化》2025年第1期85-90,共6页Machine Building & Automation

摘　　要：为探明提速后万吨重载列车的动力学性能,构建万吨重载列车纵向动力学模型,分析重载列车提速前后在不同线路上紧急制动的纵向冲动力和制动距离;建立货车动力学仿真模型,研究典型工况下提速列车通过小半径曲线区段时的动态性能。试验结果表明:列车运行速度提升10 km/h后,机车车辆及线路试验中的各指标均满足限值要求。仿真结果表明:万吨重载列车提速至90 km/h后通过平均坡度较大的连续下坡道时紧急制动距离超过800 m的限值,建议根据列车紧急制动距离对其提速等级进行限制;采取100%电制动力时,万吨重载列车空车、重车编组以90 km/h的速度通过某重载线路R 600 m曲线区段时,轮轨垂向力、轮轨横向力、脱轨系数和轮重减载率均小于限值。To ascertain the dynamic performance of train after speed-raising,a longitudinal dynamic model of ten thousand tons heavy-haul train was established and the longitudinal in-train forces and braking distances under emergency braking conditions before and after the speed-raising on different tracks were analyzed.A wagon dynamic model was established to study the dynamic performance of the train passing through a small radius curve under typical operating conditions.The test results show that when the train speed increases by 10 km/h,all indicators meet the limit requirements during the locomotive and vehicle tests as well as on the track.The simulation results indicate that the emergency braking distance of the Ten Thousand Tons heavy-haul train on a continuous downhill section with a high average gradient exceeds the limit of 800 m when the speed increases to 90 km/h,which suggests that the speed increase level should be restricted based on the emergencybraking distance.When implementing 100%electric braking,the wheel-rail vertical and lateral forces,derailment coefficient,and wheel load reduction rate of the ten thousand tons heavy-haul train during both empty and loaded train operations passing through a R 600 m curve of a certain heavy-haul line at a speed of 90 km/h are below limits.

关 键 词：重载铁路 万吨重载列车 提速 动力学性能 

分 类 号：U270.1[机械工程—车辆工程]