铁道标准设计2026，Vol.70Issue(1)：225-234,10.DOI:10.13238/j.issn.1004-2954.202402070003
高速轴箱内置式转向架关键悬挂参数匹配研究
Research on Matching of Key Suspension Parameters of High-Speed Bogies with Inner Axle Boxes
摘要
Abstract
This study aims to address the insufficient hunting stability caused by the reduced lateral span of high-speed bogies with inner axle boxes.Taking the intercity EMU as an example,the dynamic models of both the bogie with inner axle boxes and the conventional bogie with outer axle boxes were established using SIMPACK dynamics simulation software,and the validity of the models was verified through roller rig tests.Then,the causes of hunting instability in the bogie with inner axle boxes under different equivalent conicities were elucidated from the perspectives of nonlinear bifurcation characteristics and linear system root locus.The effects of parameters such as primary suspension and anti-hunting damper on hunting stability were analyzed,and key parameters were optimized based on modal damping ratio and bifurcation characteristics.The results showed that compared to vehicles with conventional bogies with outer axle boxes,those with bogies with inner axle boxes exhibited improved passing ability on small-radius curves,but their critical speed under high conicity conditions was significantly reduced.Under low conicity conditions,increasing the series stiffness of the anti-hunting damper and the longitudinal positioning stiffness of the primary suspension reduced the hunting damping ratio,potentially triggering primary hunting.Under high conicity conditions,increasing the series stiffness and unloading force of the anti-hunting damper,along with the longitudinal positioning stiffness of the primary suspension,increased the hunting damping ratio,which was beneficial for improving secondary hunting stability.Therefore,while ensuring primary hunting stability under low conicity and passing ability on small-radius curves,the longitudinal positioning stiffness of the primary suspension was increased to 23 MN/m,the unloading force of the anti-hunting damper was increased to 16 kN,and the series stiffness was increased to 17 MN/m.This optimization raised the critical speed of the bogie with inner axle boxes under high conicity conditions by 16.7%and improved lateral stability at 320 km/h by 9.97%.关键词
动车组/轴箱内置转向架/高速转向架/非线性分岔特性/线性系统根轨迹/蛇行稳定性/悬挂参数匹配Key words
EMU/bogie with inner axle boxes/high-speed bogie/nonlinear bifurcation characteristics/linear system root locus/hunting stability/suspension parameter matching分类
交通工程引用本文复制引用
梁兆龙,池茂儒,蔡吴斌..高速轴箱内置式转向架关键悬挂参数匹配研究[J].铁道标准设计,2026,70(1):225-234,10.基金项目
国家重点研发计划项目(2022YFB4301201) （2022YFB4301201）
