地铁B型车轴端接地系统部件断裂 原因分析及部件优化
郝梓超1陈恩伟2丁凯2赵心纶1孙成林1
Component Fracture Cause Analysis and Optimization of B-type Metro Vehicle Axial Grounding System
HAO ZichaoCHEN EnweiDING KaiZHAO XinlunSUN Chenglin
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作者信息:1.1. 中车长春轨道客车股份有限公司工程技术中心， 130062， 长春；
2.2. 合肥工业大学机械工程学院， 230009， 合肥
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Affiliation:Engineering Technology Center, CRRC Changchun Railway Vehicles Co., Ltd., 130062, 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.2023.04.016
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中图分类号/CLCN:U270.331+3； U 264.7+4
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栏目/Col:研究报告
摘要:
以地铁B型车轴端接地线缆、接线端子、支架和线夹板组成的支架线缆系统为研究对象，针对部件断裂问题进行系统性的结构特征分析，从支架结构、线缆固定方式等方面进行结构和部件分布的优化。基于支架线缆系统的模态分析和谐响应分析，研究线缆的最大振幅点，对线缆的固定方式进行优化。优化后支架线缆系统固有频率有所提高，能够尽量避免支架线缆系统同轮轨和轴箱发生共振，提高了部件使用寿命。
Abstracts:
The bracket-cable system composed of axial grounding cable, grounding terminal, bracket and wire splint of B-type metro vehicle is studied. The structural characteristics of the component fracture problem are systematically analyzed, the structure and component distribution are optimized from aspects such as bracket structure and cable fixing method. Based on the modal analysis and harmonic response analysis of the bracket-cable system, the maximum amplitude point of the cable is studied, and the fixing method of the cable is optimized. After optimization, the natural frequency of the system is improved and the resonance of bracket-cable system with wheel-rail and axle box is possibly avoided, thereby improving the service life of the components.
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