机械5

摘要:本着节省材料、成本低廉、安全简易、效率高的原则，立足于带式滚动广告屏整体结构设计，完成的基本工作如下：通过对国内外技术调查取样分析，为装置关键部件和试验研究等层面提供了性能依据，在经过理论的指导合理的设计出机械装置的结构，主要设计包括有结构设计，电机选择，强度校核等，通过对各工作部件的理论分析,进而对带式滚动广告屏整体结构和性能作出优化设计，广告屏在高效利用空间的前提下节省了人力，同时美化了城市容貌。 关键词：广告屏结构机械装置 Abstract: O
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nical Device 目录 1绪论1 1.1课题的背景及研究目的1 1.2研究目的1 1.3国内外的研究现状2 1.3.1国外研究现状2 1.3.2国内的研究现状2 1.4主要研究内容3 1.5研究方法3 2整体结构系统的设计4 2.1传动方案的选择4 2.1.1链传动的选择4 2.2.2电动机的选择及调速方式5 2.2选择电动机类型6 2.2.1确定电机工作时的功率7 2.2转轴的设计8 2.2.1轴结构的设计8 2.2.2转轴的强度校核8 2.3带轮与皮带的设计9 2.3.1内部带轮与皮带的参数设计9 2.3.2调整带轮与皮带参数12 2.4心轴的设计14 2.4.1心轴的尺寸设计14 2.4.2心轴的强度校核15 4滚动广告屏控制系统设计4 4.1电器控制系统的设计16 4.2电器控制系统的主要步骤16 4.3需求分析16 4.4 I/O分配表及PLC型号选择18 结论20 参考文献21 致谢22