摘要
分析了现有转向架安全托及安全吊架断裂问题的原因,针对碳纤维复合材料的高强度、高韧性、耐疲劳、耐高温、耐腐蚀、重量轻等优异性能,提出了现役车辆使用碳纤维复合材料安全托的整改方案。以某车型为例,对新型安全托进行冲击和振动疲劳的有限元计算分析,和具体线路的进行往返动应力测试。计算结果和测试结果证明:采用CFRP安全托可以满足运用要求,能缓解并提高安全吊座的使用寿命;而且利用车辆整备时间即可完成整改处理,避免了扣车整改的不利影响。
Reasons for the breaking problems in current bogy safety bracket and safety hanger are analyzed.Based on the excellent properties of carbon fiber composite polymer,including high strength,high toughness,fatigue resistance,high temperature resistance,corrosion resistance,light weight and so on,a rectification scheme is proposed for the use of carbon fiber composite polymer in safety bracket on the active vehicles.Taking a certain vehicle type as the example,the finite element calculation analysis of the impact and vibration fatigue on new safety bracket is conducted,and a cyclic dynamic stress test on specific routes is implemented.Both the calculation and test result show that the CFRP safety bracket can fully meet the operational demands,alleviate the stress and increase the safety hanger lifespan.At the same time,the vehicle rectification can be completed within the preparation time,thus the undermining influence of vehicle rectification could also be avoided.
作者
梁云
谌亮
杨集友
吕常秀
贾洪龙
王一淞
LIANG Yun;CHEN Liang;YANG Jiyou;LYU Changxiu;JIA Honglong;WANG Yisong(CRRC Changchun Railway Vehicles Co.,Ltd.,130062,Changchun,China)
出处
《城市轨道交通研究》
北大核心
2020年第1期129-133,共5页
Urban Mass Transit
关键词
轨道交通
车辆
碳纤维复合材料
转向架
安全托
rail transit
vehicle
carbon fiber composite polymer
bogy
safety bracket
作者简介
第一作者:梁云,教授级高级工程师。
