毕业论文-小型播种机的设计.doc

PAGE I 目 录 TOC \o 1-3 \h \z \u HYPERLINK \l _Toc420218692 设计总说明 PAGEREF _Toc420218692 \h 1 HYPERLINK \l _Toc420218693 The general description of the design PAGEREF _Toc420218693 \h 2 HYPERLINK \l _Toc420218694 1. 绪 论 PAGEREF _Toc420218694 \h 3 HYPERLINK \l _Toc420218695 1.1播种机的发展现状 PAGEREF _Toc420218695 \h 3 HYPERLINK \l _Toc420218696 1.1.1我国播种机的发展现状 PAGEREF _Toc420218696 \h 3 HYPERLINK \l _Toc420218697 1.1.2 国外播种机械的研究现状 PAGEREF _Toc420218697 \h 4 HYPERLINK \l _Toc420218698 1.2国内外播种机械的发展趋势 PAGEREF _Toc420218698 \h 4 HYPERLINK \l _Toc420218699 1.3小型播种机的发展前景 PAGEREF _Toc420218699 \h 4 HYPERLINK \l _Toc420218700 2. 小型播种机依据设计和设计原理概述 PAGEREF _Toc420218700 \h 5 HYPERLINK \l _Toc420218701 2.1 小型播种机设计依据 PAGEREF _Toc420218701 \h 5 HYPERLINK \l _Toc420218702 2.2小型播种机的原理 PAGEREF _Toc420218702 \h 5 HYPERLINK \l _Toc420218703 3. 小型播种机的总体设计 PAGEREF _Toc420218703 \h 8 HYPERLINK \l _Toc420218704 3.1小型播种机的设计要点 PAGEREF _Toc420218704 \h 8 HYPERLINK \l _Toc420218705 3.2播种机的主要参数的确定 PAGEREF _Toc420218705 \h 8 HYPERLINK \l _Toc420218706 3.2.1 播种机动力来源 PAGEREF _Toc420218706 \h 8 HYPERLINK \l _Toc420218707 3.2.2 播种机工作速度 PAGEREF _Toc420218707 \h 9 HYPERLINK \l _Toc420218708 3.2.3 播种机的工作功率 PAGEREF _Toc420218708 \h 9 HYPERLINK \l _Toc420218709 4. 播种机的具体设计 PAGEREF _Toc420218709 \h 10 HYPERLINK \l _Toc420218710 4.1 排种器 PAGEREF _Toc420218710 \h 10 HYPERLINK \l _Toc420218711 4.1.1 排种器作用和要求 PAGEREF _Toc420218711 \h 10 HYPERLINK \l _Toc420218712 4.1.2排种器的选用 PAGEREF _Toc420218712 \h 10 HYPERLINK \l _Toc420218713 4.1.3 排种轮参数的选用(本论文以大豆专用排种器为例) PAGEREF _Toc420218713 \h 11 HYPERLINK \l _Toc420218714 4.1.4毛刷轮的参数选择 PAGEREF _Toc420218714 \h 11 HYPERLINK \l _Toc420218715 4.2 开沟器 PAGEREF _Toc420218715 \h 12 HYPERLINK \l _Toc420218716 4.2.1 开沟器要求 PAGEREF _Toc420218716 \h 12 HYPERLINK \l _Toc420218717 4.2.2 开沟器的分类 PAGEREF _Toc420218717 \h 12 HYPERLINK \l _Toc420218718 4.2.3开沟器的设计 PAGEREF _Toc420218718 \h 13 HYPERLINK \l _Toc420218719 4.3 覆土器 PAGEREF _T