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为了解决现有起落架安装设备存在的工作自由度较少及装置自动化程度不足等问题,基于3-PRS空间并联机构原理设计了一种新型起落架安装车。根据飞机起落架装配步骤的特点和人机工程学的设计原则,对某型飞机起落架安装车调姿装置进行轻量化设计;采用理论分析及有限元仿真的方法,以提高起落架安装效率、提高安装设备工作自由度为设计目标,确定了新型起落架安装车整体尺寸;通过仿真分析,确定了姿态调整装置的固有频率和振型,研究了外部激励对3-PRS空间并联机构与顶升立柱连接部位幅值频率曲线的影响,通过幅值频率曲线确定了调姿装置可能发生的共振频率。设计研究结果可为起落架安装车调姿装置的优化设计提供一定的理论参考。
In order to solve the problems of the existing landing gear installation equipment with less freedom of work and the lack of automation of the device, a new type of landing gear truck is designed based on the principle of 3-PRS space parallel mechanism. According to the characteristics of the landing gear assembly procedure and the ergonomic design principles, a lightweight aircraft landing gear attitude adjustment device is designed. The theoretical analysis and finite element simulation are used to improve the landing gear installation efficiency, In order to improve the working freedom degree of the installation equipment, the overall dimensions of the new landing gear truck were determined. Through the simulation analysis, the natural frequencies and mode shapes of the attitude adjusting device were determined. The effects of external excitation on the parallel mechanism and the lift of 3-PRS space were studied. The influence of the amplitude frequency curve of the column connecting parts, the resonant frequency which may occur in the adjusting device is determined by the amplitude frequency curve. The results of the research can provide some theoretical references for the optimization design of the vehicle adjusting device for landing gear.