摘要
为研究钢轨快速打磨车服役时的动力学性能,建立了考虑打磨小车与大车、磨石与钢轨之间相互作用的钢轨快速打磨车模型,并进行动力学仿真分析,得到了该车在直线和曲线上运行时不同作业状态下的动力学性能。研究表明:钢轨快速打磨车的大车在自运行、非工作和工作状态下的临界速度分别为178 km/h、176 km/h、169 km/h,打磨小车在非工作和工作状态下的临界速度分别为145 km/h、119 km/h,均能满足80 km/h及以上的速度要求。在不同半径的曲线轨道上运行时,大车和打磨小车的曲线通过性能均随曲线半径的增大而提高,且均能满足标准要求。在不同欠超高量的曲线轨道上运行时,欠超高量越小,打磨小车在作业状态和非作业状态下的曲线通过性能越好,作业状态受欠超高量的影响相较非作业状态较小,且打磨小车的曲线通过安全性在所研究的超高范围内均能满足标准要求。
In order to study the dynamic performance of the high-speed rail grinding vehicle in service,this paper establishes a model of it,considering the interactions between the grinding sub-vehicle and main vehicle,as well as between the grinding stones and rails.A dynamic simulation analysis is conducted to obtain the dynamic performance of the vehicle under different operational conditions on straight and curved tracks.The research findings indicate that the critical speeds of the main vehicle in self-propelled,non-operational,and operational states are 178 km/h,176 km/h,and 169 km/h respectively.The grinding sub-vehicle's critical speeds in non-operational and operational states are 145 km/h and 119 km/h respectively,satisfying the speed requirements of 80 km/h or above.When operating on curved tracks with different radii,the curve passing performance of both the main vehicle and the sub-vehicle improves with increasing curve radius,and both meet the standard requirements.When operating on curved tracks with different cant deficiencies,the curve passing performance of the grinding sub-vehicle in both operational and non-operational states is better when the cant deficiency is smaller.The impact of cant deficiency on operational state is relatively smaller than that in the non-operational state.The curve passing safety of the grinding sub-vehicle within the range of the cant deficiencies in this study meets the standard requirements.
作者
王振宇
章优仕
姚晓晖
董龙
王衡禹
WANG Zhenyu;ZHANG Youshi;YAO Xiaohui;DONG Long;WANG Hengyu(State Key Laboratory of Traction Power,Southwest Jiaotong University,Chengdu 610031,China;Sichuan SWJTU Railway Development Co.,Ltd.,Chengdu 610041,China)
出处
《机械》
2024年第4期27-33,共7页
Machinery
基金
国家自然科学基金(51775454)
四川省科技计划(2022NSFSC0469、2023NSFSC0399)
中国国家铁路集团科技研究开发计划(K2020G026)。
关键词
钢轨快速打磨车
车辆动力学
临界速度
运行安全性
high-speed rail grinding vehicle
vehicle dynamics
critical speed
operational security
