摘要
以铁路信号继电器为研究对象,针对最容易发生基频谐振的触簧部件,考虑触点非线性接触的影响,建立了铁路信号继电器触簧系统刚柔耦合结构的振动特性物理模型。通过有限元方法对触簧系统进行振动仿真,并以触点接触力作为触点振动抖断的判据,得到了触簧系统在振动环境下的动态特性和振动极限加速度。通过分析不同结构参数(簧片长度、宽度、厚度、推动力)下的振动特性,得出了若干有关提高电磁继电器触簧系统抗振性能的结论。研究可为机械振动条件下铁路信号继电器触点接触失效或误动作问题的解决提供参考。
Selecting the railway signal relay for the study, the vibration characteristics model of rigid-flexible coupling structure was built. The spring sets also could be taken as the vulnerable part when the relay working in the mechanical environment. Considering the impact of nonlinear contact, the vibration characteristics simulation of the relay was built by using finite element method, taking the contact force as the reasonable criteria for verifying the anti-vibration spring system. The dynamic characteristics and the limit vibration acceleration of the spring system were obtained. By analyzing the vibration characteristics under the different structure parameters （including the length of spring, the thickness of spring, the width of spring, the force） , how to improve the spring systems is anti- vibration ability was investigated. The analysis method and conclusions are valuable in solving the railway signal relay contacts failure caused by mechanical vibration.
出处
《电器与能效管理技术》
2015年第6期15-19,共5页
Electrical & Energy Management Technology
关键词
铁路信号继电器
振动
振动极限加速度
非线性
railway signal relay
vibration
limit vibration acceleration
nonlinear
