迫导向装置对低地板列车曲线通过性能影响的仿真分析
张岩岩1杨新文1项恺文1左安国2
Simulation Analysis of Forced-Steering Device Impact on Low-Floor Vehicle Curve Passing Performance
ZHANG Yanyan1YANG Xinwen1XIANG Kaiwen1ZUO Anguo2
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作者信息:1.同济大学交通学院， 201804， 上海
2.长春市轨道交通集团有限公司运营事业部， 130012， 长春
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Affiliation:1.College of Transportation, Tongji University, 201804, Shanghai, China
2.Operation Business Department, Changchun Railway Traffic Group Co., Ltd., 130012, Changchun, China
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关键词:
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Key words:
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DOI:10.16037/j.1007－869x.20231095
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中图分类号/CLCN:U239.3
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栏目/Col:车辆制造与列车控制
摘要:
［目的］采用独立轮对的低地板轨道交通车辆缺乏曲线导向能力，轮轨磨损严重，车辆运行的安全性和平稳性降低。针对此问题，提出一种多连杆独立轮迫导向装置，并分析该装置对低地板列车曲线通过性能的影响。［方法］该迫导向装置采用“四角分导”的导向模式，即转向架的4个独立轮分别由4个导向机构导向。每个导向装置的一端与独立轮短轴固结，另一端与相邻动车车体铰接。当独立轮对在曲线上偏移量过大时，动车车体和拖车转向架之间产生转向偏角，导向装置的杆系转动，带动短轴末端的独立轮径向运动，实现独立轮的迫导向。以70%低地板轻轨车辆为例，在多体动力学软件UM中建立了车辆-轨道耦合动力学计算模型，对列车安装迫导向装置前后的曲线通过性能进行仿真对比。［结果及结论］该装置使列车各曲线通过性指标均有不同程度的提升，其中轮轨磨耗功降低最为明显。提出的迫导向装置能够充分改善独立车轮导向困难的问题，可有效控制轮轨磨损、提高车辆运行的安全性。
Abstracts:
［Objective］ Low-floor rail transit vehicles with independent wheelset lack curve guidance capabilities, leading to severe wheel-rail wear, reducing safety and stability of vehicle operation. To solve this problem, an independent wheel forced-steering device with multi-linkage mechanism is proposed, and its influence on curve passing performance of low-floor vehicle is analyzed. ［Method］ This device employs a guidance mode of "four-wheel respective guide", that is, the four independent wheels of the bogie are guided by four guide mechanisms respectively. One end of each device is rigidly attached to the short axle of independent wheel and the other end articulated with the adjacent motor car body. When the offset of the independent wheel set on curves is too large, a steering angle is generated between the motor car body and the trailer bogie, and the guide device rod system rotates, driving the independent wheel at the short shaft end to move radially, realizing the forced guidance of the independent wheel. Taking the 70% low-floor light rail vehicle as example, a vehicle-track coupling dynamics calculation model is established in the multi-body dynamics software UM, to conduct a simulation comparison of the train′s curve passing performances before and after the forced guide device installation. ［Result & Conclusion］ This device improves all the train curve passing performance indicators to varying degrees, among which the reduction in wheel-rail wear is the most obvious. The proposed forced-steering device can fully improve the difficult problems in independent wheel guidance, effectively control wheel-rail wear, and improve vehicle operation safety.
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