摘要
塞拉门是目前城轨列车车门系统中的主流类型,大部分塞拉门具有下摆臂结构,该结构对门扇的顺畅运动和良好的密封性能起着至关重要的作用。然而,当前运营单位针对下摆臂结构的检修多集中于尺寸测量和功能检查方面,而对下摆臂状态的关注较少,行业内已出现多起因缺乏针对下摆臂状态的检修而导致下摆臂滚轮掉落至轨行区的案例,因此对下摆臂状态进行仿真分析意义重大。文章根据塞拉门系统正线受力和密封方式,对2种不同结构的下摆臂进行对比分析,并基于几何特征建立固体力学和应力寿命的有限元模型。仿真结果表明,带有防脱销结构的下摆臂组件在相同受力情况下,使用寿命约是无防脱销结构的2.78倍。由此提出以下改进措施,对于客流量较少的列车可以仅在大修时更换下摆臂组件,而对于状态欠佳的下摆臂,可以在半个架修周期内单独更换滚轮组件,以确保列车运行的安全性和可靠性。
The sliding plug door is the mainstream type in the door system of urban rail transit trains.Most sliding plug doors have a lower-swing arm structure,which plays a crucial role in the smooth movement and good sealing performance of the door.At present,the maintenance of the structure by the operating unit has largely been focused on dimensional measurement and functional inspection,while the research on the status of the lower swinging arm is less common,and there have been many cases in the industry in which the roller of the lower swinging arm fell to the track area due to the lack of maintenance on the status of the lower swinging arm,so it is of great significance to carry out the simulation and analysis on the status of the lower swinging arm.In this article,we compare and analyze the swing arm of 2 different structures with respect to the main line force tolerance and sealing mode of the sliding plug door system,and establish the finite element model of solid mechanics and stress life based on the geometric characteristics.The simulation results show that the service life of the lower swing arm assembly with anti-detachment pin structure is about 2.78 times of that of the structure without anti-detachment pin under the same force.The following improvement measures are thus proposed.For trains with low passenger flow,the lower swing arm assembly can be replaced only during overhaul,while for the lower swing arm in bad condition,the lower swing arm roller assembly can be replaced individually within half of the bogie repair cycle to ensure the safety and reliability of train operation.
作者
熊凌鹄
刘犇
XIONG Linghu;LIU Ben(Foshan Metro Operation Co.,Ltd.,Foshan Guangdong 528010,China;CRRC Zhuzhou Electric Co.,Ltd.,Zhuzhou Hunan 412000,China)
出处
《现代城市轨道交通》
2024年第8期58-64,共7页
Modern Urban Transit
关键词
城轨列车
塞拉门
下摆臂组件
有限元仿真
应力寿命
urban rail transit trains
sliding plug door
lower swing arm assembly
finite element simulation
stress life
