基于LMS的登机门解锁抬升机构动力学分析

摘要

For the design scheme of a gate-stair integrated and plugged passenger door of a type of busi-ness jet,there is an unlocking and lifting mechanism. To ensure adequate security, the mechanism in-cludes the inner handle lock mechanism and the cam design for the protection of accidental door opening, and the pressure plate for the protection of cabin pressurization. To verify the feasibility of the design scheme,the multi-body dynamics analysis model of unlocking and lifting mechanism are established with LMS Virtual. Lab software. The article Analyzes the required moment of the inner handle with influence of lifting cam,inner handle lock and pressure plate mechanism when opening the door. The simulation re-sults show that the mechanism design scheme meets the use requirements and satisfy the expected results of inner handle moment.%针对某大型公务机的门梯合一堵塞式登机门设计方案，设计了一套解锁抬升机构。为保证足够的安全性，机构中的内手柄锁和凸轮设计用于保障非意外开门，释压门则用于保障客舱只有在锁闩处于锁定情况下才能增压。为验证机构设计方案的可行性，采用LMS Virtual Lab软件建立其解锁抬升机构的多体动力学仿真分析模型，分析其在抬升凸轮、手柄锁和释压门等主要安全保障机构的影响下，登机门开启时所需的手柄力矩的大小。仿真分析得到了设计预期的手柄力矩结果，验证了登机门机构方案设计的可行性，说明设计方案能够满足使用要求。