地铁车辆转向架主动径向系统作动器的布置方式
罗汇智田师峤肖春昱
Layout of Metro Vehicle Bogie Active Steering System Actuator
LUO HuizhiTIAN ShiqiaoXIAO Chunyu
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作者信息:同济大学铁道与城市轨道交通研究院，201804，上海∥第一作者，硕士研究生
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Affiliation:Institute of Rail Transit, Tongji University, 201804, Shanghai, China
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关键词:
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Key words:
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DOI:10.16037/j.1007-869x.2023.01.033
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中图分类号/CLCN:U270.331+.7U270.1+1
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栏目/Col:研究报告
摘要:
针对一系锥形簧非三轨受流的B型车辆转向架，提出一种即插式主动径向同侧驱动的技术升级方案，以改善其曲线通过性能。该方案中的主动径向作动器直接连接同侧前后轴箱，不与构架发生关联，具有结构简单、对原有转向架结构改动小、成本低的优势。建立动力学模型，对主动径向曲线通过一系簧纵向时变刚度对轮对径向姿态影响、蛇行稳定性等方面进行了动力学仿真分析。分析结果表明：同侧驱动技术方案能有效改善曲线通过性能，纵向刚度时变不影响同侧驱动径向姿态，蛇行临界速度满足最高运行速度要求。
Abstracts:
To improve metro vehicle curve passing performance, targeting B-type vehicle bogie with conical primary springs without third-rail current collection, a technical upgrade scheme of plug-in active steering same side drive is proposed. The active steering actuators in this scheme are directly connected to the front and rear axle boxes on the same side, while not associated with the bogie frame. Compared to conventional scheme, this scheme has advantages of simple structure and a minor and cheaper modification to the original bogie. A dynamic model is established, and a dynamics simulation analysis is emphatically carried out for the aspects including the influence of active steering curve on wheelset steering attitude through primary spring longitudinal time-varying stiffness, and the hunting stability. Analysis results show that the same side drive technical scheme can effectively improve the curve passing performance. Longitudinal time-varying stiffness doesn′t affect the same side drive steering attitude, and the critical hunting speed is higher than the maximum running speed requirement.
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