机械5

本文对手推式草坪修剪机的工作原理，传动系统和剪草机构等具体结构做了详细介绍，并且重点计算确定了传动系统中齿轮和轴的基本尺寸，对各个标准零件、非标准零件的选取也做了相应的计算。在计算数据的基础上用Auto CAD完成无动力草坪修剪机的装配图、部分非标准件的零件二维图,并用Solid Edge完成所有零件的三维造型和装配。该机具有无污染、无噪音、无振动等优点，适用于庭院草坪，小面积草坪，防暴区域草坪。 关键词：草坪；手推式草坪修剪机；传动系统 目录 摘要··································································Ⅲ ABSTRACT····························································Ⅳ 1前言 1.1手推式草坪修剪机的背景及研究意义····································1 1.2手推式草坪修剪机的研究现状及发展趋势································2 1.3手推式草坪修剪机····················································4 1.4本课题的设计任务····················································5 2手推式草坪修剪机的总体设计 2.1手推式草坪修剪机的工作原理··········································6 2.2手推式草坪修剪机的主要结构·········································6 2.2.1传动系统························································7 2.2.2剪草机构························································7 3手推式草坪修剪机机械结构设计计算 3.1传动系统···························································9 3.1.1齿轮的确定······················································9 3.1.2轴的确定·······················································22 3.2剪草机构···························································26 3.1.1滚刀的设计·····················································26 3.1.2底刀的设计·····················································27 4手推式草坪修剪机的使用说明 4.1安全事项···························································28 4.2安装·······························································28 4.3维护保养···························································30 5结论································································31 谢辞··································································32 参考文献·······························································33