机械5

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n 目录 摘要……………………………………………………………………………Ⅰ Abstract…………………………………………………………………………Ⅱ 1引言…………………………………………………………………………………1 1.1草坪割草机的分类……………………………………………………………1 1.2草坪割草机的使用方法………………………………………………………1 1.3使用割草机的安全事项及汽油的处理方法…………………………………1 1.4割草机的维护及故障处理……………………………………………………1 2割草机的概述…………………………………………………………………… 3 2.1我国割草机的发展………………………………………………………… 4 2.1.1发展状况…………………………………………………………………4 2.1.2发展存在的问题……………………………………………………… 5 2.2割草机的分类……………………………………………………………… 6 2.3割草机的结构特点及其工作原理………………………………………… 6 3割草机的参数设计…………………………………………………………………9 3.1驱动装置的设计………………………………………………………………9 3.2割刀轴的设计…………………………………………………………………9 3.2.1轴的计算设计………………………………………………………… 9 3.2.2轴的材料选择…………………………………………………………10 3.2.3轴的计算………………………………………………………………10 3.3刀片的设计及计算…………………………………………………………13 3.4调高机构的设计……………………………………………………………14 3.4.1调高机构的设计计算…………………………………………………15 3.5铰链的设计…………………………………………………………………17 3.5.1铰链强度校核…………………………………………………………18 4结论………………………………………………………………………………19 参考文献……………………………………………………………………………20 致谢…………………………………………………………………………………21