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对4类升降工作平台整机结构进行了模态分析,提取了前10阶模态,获得了对应的固有频率及模态振型,并分析了振型特征及起振原因。通过4类升降工作平台固有频率和振型特征的比选,给出了选用建议。
The modal analysis of the whole machine structure of the four kinds of lifting work platforms was carried out. The first ten modes were extracted and the corresponding natural frequencies and mode shapes were obtained. The characteristics of the mode shapes and the causes of the vibration were analyzed. Through the comparison and selection of natural frequencies and mode shapes of four kinds of lifting work platforms, some suggestions are given.