三人行图纸

设计大纲： 摘要·····································································································1 关键词··································································································1 1 前言································································································1 1.1 课题背景及目的··········································································1 1.2 国内外研究状况···············································································2 1.3 本论文设计的主要内容···································································3 2电动三轮车结构设计方案的确定······························································3 2.1 电动三轮车根据用途不同的分类·······················································3 2.1.1 老年休闲型电动三轮车····························································3 2.1.2 客运型电动三轮车····································································3 2.1.3 货运型电动三轮车·········································································3 2.2 目前国内外常见的电动三轮车后桥的结构样式·····································3 2.2.1 单侧电机、外置车架型·························································3 2.2.2 中置电机带大轴型······································································4 2.3 电动三轮车设计方案比较分析····························································4 3电动车的整体设计···················································································4 3.1电动三轮车的参数选择····································································4 3.2电动三轮车外形的设计····································································4 4 电动机的选择·························································································5 4.1电动机的分类··················································································5 4.1.1有刷电机的优缺点·······································································5 4.1.2无刷电机的优缺点·····································································6 4.2 电动机功率的选择·············································································7 4.2.1行驶阻力·····················································································7 4.2.2 最大功率·············································································7 4.2.3 最大转速············································································7 5 蓄电池的选择··················································································7 6 控制器的选择·····················································································7 6.1 控制器的功能·················································································8 6.2 控制器的分类·············································································8 6.2.1有刷控制器·········································································8 6.2.2 无刷控制器············································································9 7电动三轮车转向机构的设计·····································································10 7.1 转向方式的确定·················································································10 7.2 前叉的设计······················································································10 7.2.1 前叉转向轴的设计··································································10 7.2.2 叉冠的设计··············································································10 7.2.3减震器的选择············································································11 8 电动三轮车行走系统的设计·········································································12 8.1车架的设计·······················································································12 8.2 电动三轮车后桥选用······································································13 8.3 传动轴的设计········································································13 9 电动三轮车制动系统的设计·······································································14 9.1电动三轮车前轮制动系统·······································································14 9.2电动三轮车后轮制动系统·····································································14 9.3电动三轮车驻车系统·········································································14 10 轮胎、轮辋的选择·············································································15 10.1 轮胎····························································································15 10.2轮辋·················································································15 11结论·······································································································15 参考文献····································································································16 致谢···········································································································17

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