上海轨道交通9号线车辆转向架轴箱吊耳失效分析及优化建议
印祯民
Failure Analysis of Axle Box Hanger on Shanghai Rail Transit Line 9 and Optimization Suggestions
YIN Zhenmin
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作者信息:上海地铁维护保障有限公司车辆分公司，200235，上海
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Affiliation:Vehicle Branch, Shanghai Metro Maintenance Guarantee Co., Ltd., 200235, 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.2020.05.008
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中图分类号/CLCN:U270.331
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栏目/Col:研究报告
摘要:
针对上海轨道交通9号线车辆转向架轴箱吊耳出现裂纹和断裂问题，分析了轴箱吊耳材料的化学成分，建立了轴箱吊耳有限元模型，校核了其静强度和疲劳强度。结合线路轮轨振动试验，获得了实际的轴箱吊耳振动数据，综合评估分析了转向架轴箱吊耳断裂失效原因。确定共振是引起轴箱吊耳断裂的主要原因。提出了尺寸优化、结构优化和改善线路状况等可行的优化建议。
Abstracts:
For the crack and fracture problems in the bogie axle box hanger on Shanghai metro Line 9, the chemical composition of the material is analyzed. Then, a finite element model of the axle box hanger is established to check the static strength and fatigue strength. Combined with the line′s wheel-rail vibration test, the actual axle box hanger vibration data are obtained. Through a comprehensively evaluation of the bogie axle box hanger fracture failures, and the resonance is detected as the main cause of the axle box hanger fracture. Therefore, feasible optimization suggestions are proposed.
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