杨欣薇 朱松青 缪秀祥 杨柳

摘 要：为了解决列车门系统承载传动机构的磨损、润滑不良及扭簧变形等问题，本文基于ADAMS仿真软件，通过对门系统承载传动机构工作原理的分析，确定目标函数和约束条件，实现对该机构的动力学仿真，并综合考虑滚销与丝杠的接触刚度、摩擦系数及扭簧初始角度对门系统的影响规律。结果表明，接触刚度的增加使前后滚销受力都增加;摩擦系数的增加使电机的输出扭矩增加;扭簧初始角度的增加使前滚销受力减小、后滚销受力增加。该仿真分析能够为后续列车门系统的维修检测提供一定参考。

关键词：承载传动机构;列车门系统;仿真分析

中图分类号：U270.38 文献标识码：A文章编号：1003-5168（2021）04-0044-06

Abstract： In order to solve the problems of wear， poor lubrication and torsion spring deformation of the load-bearing transmission mechanism of the train door system， based on ADAMS simulation software， through the analysis of the working principle of the load-bearing transmission mechanism of the door system， the objective function and constraint conditions were determined to realize the dynamics of the mechanism simulation in this paper， and the influence of the contact stiffness， friction coefficient and the initial angle of the torsion spring on the door system were comprehensively considered. The results show that the increase in contact stiffness increases the force on the front and rear roller pins; the increase in friction coefficient increases the output torque of the motor; the increase in the initial angle of the torsion spring reduces the force on the front roller pin and the force on the rear roller pin. The simulation analysis can provide a certain reference for the subsequent maintenance and testing of the train door system.

Keywords： load-bearing transmission mechanism;train door system;simulation analysis

列车门系统作为地铁车辆上重要的组成部件，需要进行频繁的开关门运动，而且要承受运行过程中的交变气动载荷和乘客挤压力，因此极易发生故障而导致列车停运，甚至引发人员伤亡事故。门系统承载传动机构作为承载荷载和传递动力的主要承担者，常常会遇到丝杠变形、润滑不良及扭簧变形等情况[1-2]，在实际运行中又很难通过试验的方式监测这些异常情况，因此，有必要对门系统的承载传动机构进行动力学研究。

为了解决开关门运行过程中门系统承载传动机构存在的丝杠磨损、扭簧变形及润滑不良等问题，本文依靠三维绘图软件SolidWorks构建门系统承载传动机构模型，并将其保存为中性文件，导入ADAMS动力学仿真软件中，在熟悉承载传动机构的工作原理的基础上，进行零件之间约束条件的设定及目标函数的确定[3]。……