不同型号双弓混合编组时的弓网动力学特性研究
鲁文伟周宁陈鸿明王旭阳程尧张卫华
Research on Pantograph-Catenary Dynamics Characteristics in Mixed Double Pantographs Formation of Different Types
LU WenweiZHOU NingCHEN HongmingWANG XuyangCHENG YaoZHANG Weihua
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作者信息:西南交通大学牵引动力国家重点实验室， 610031， 成都
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Affiliation:State Key Laboratory of Traction Power, Southwest Jiaotong University, 610031, Chengdu, China
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关键词:
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Key words:
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DOI:10.16037/j.1007-869x.2025.04.031
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中图分类号/CLCN:U225
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栏目/Col:研究报告
摘要:
［目的］双弓运行时，受前弓的影响，后弓的弓网动态受流质量往往会有所降低。有必要对双弓混编时的接触网-受电弓动态相互作用进行研究。［方法］建立了接触网的有限元模型和受电弓的集中质量模型。首先，分析运行时受电弓参数对后方各位置处接触线平均抬升量的影响；然后，以此为基础分析前弓参数对后弓动力学性能的影响；最后，推广至双弓混编时的弓网动力学性能分析。［结果及结论］不同受电弓引起的抬升量幅值不同，受电弓性能越好，抬升量幅值越低。对比受电弓集中质量模型的9个参数发现，下框架与底架之间的阻尼c3对抬升量幅值影响较大，调整c3的值可以有效提升受电弓的受流质量进而降低接触线抬升量的波动幅值。双弓混编运行时，若前弓的动力学性能较好，后弓的受流质量也会偏好；若前弓的动力学性能较差，可以通过调整c3的值来降低前弓后方各位置处接触线平均抬升量的波动幅值，进而优化后弓的动力学性能。
Abstracts:
［Objective］ Due to the influence of the leading pantograph in double pantographs operation, the current collection performance of the trailing pantograph often degrades. It is necessary to study the dynamic interaction of the PC (pantograph-catenary) system when double pantographs are mixed. ［Method］ A finite element model of catenary and a lumped mass model of pantograph are established. Firstly, during operation the effect of the pantograph′s parameters on the average uplift of the contact wires at the rear locations is analyzed; then based on this, the effect of the leading pantograph′s parameters on the trailing pantograph dynamics is analyzed; and finally it is extended to the analysis of the PC dynamics performance in the case of mixed double pantographs. ［Result & Conclusion］ The uplift amplitude caused by different pantographs is varied. The better the performance of the pantograph, the lower the uplift amplitude. By comparing the 9 parameters of the pantograph lumped mass model, it is found that the damping between the lower frame and the bottom frame c3 has a significant influence on the uplift amplitude. Therefore, adjusting the value of c3 can effectively improve the current collection quality of pantograph and thus reduce the fluctuation amplitude of contact line uplift. When two different pantographs are in mixed operation, if the dynamic performance of the leading pantograph is better, the current collection quality of trailing pantograph will also be better; if the dynamic performance of leading pantograph is poor, the fluctuation amplitude of the average contact line uplift amount at each position behind the leading pantograph can be reduced by adjusting the value of c3, thereby optimizing dynamics performance of the trailing pantograph.
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