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目 錄 摘要 ....................................................................................................................................Ⅰ ABSTRACT .....................................................................................................................Ⅱ 第 1 章 緒論 ....................................................................................................................1 1.1 本研究的目的和意義 ..............................................................................................1 1.2 農(nóng)作物秸稈綜合利用現(xiàn)狀 ......................................................................................2 1.3 秸稈的特性 .............................................................................................................3 1.3.1 秸稈的物理特性 ..........................................................................................3 1.3.2 秸稈的切碎特性 ..........................................................................................4 1.3.3 秸稈的化學成分 ..........................................................................................4 第 2 章 農(nóng)業(yè)粉碎機設計方案 ...................................................................................5 2.1 總體結構設計 .........................................................................................................5 2.2 樣機的性能試驗 .....................................................................................................5 2.3 本章小結 .................................................................................................................7 第 3 章 農(nóng)業(yè)粉碎機結構設計 .................................................................................8 3.1 切碎器設計 .............................................................................................................8 3.1.1 切碎方式選擇 ..............................................................................................8 3.1.2 切碎原理分析 ..............................................................................................9 3.1.3 割刀參數(shù)分析 ............................................................................................10 3.1.4 主要技術參數(shù)確定 ....................................................................................11 3.2 喂入機構設計 .......................................................................................................12 3.3 傳動系統(tǒng)設計 .......................................................................................................13 3.4 本章小結 ...............................................................................................................14 第 4 章 盤刀式切碎器刀刃曲線對切割能耗的影響 .......................................15 4.1 切割過程幾何參數(shù)的分析 ...................................................................................15 4.2 試驗設計 ...............................................................................................................16 4.3 結果與分析 ...........................................................................................................16 4.4 結論 ........................................................................................................................17 4.5 本章小結 ................................................................................................................18 第 5 章 動刀片受力分析 ........................................................................................20 5.1 工作原理 ...............................................................................................................20 5.2 動刀片的受力分析 ...............................................................................................21 5.2.1 直刃口動刀片的受力分析 ........................................................................21 5.2.2 圓弧刃口動刀片的受力分析 ....................................................................24 5.2.3 動刀片的受力特性曲線 ............................................................................25 5.3 分析結果討論 ........................................................................................................26 5.4 本章小結 ................................................................................................................26 第 6 章 切碎機整體結構的設計 ............................................................................27 6.1 電機選擇 ................................................................................................................27 6.1.1 切碎器轉速的確定 ....................................................................................27 6.1.2 切碎器功率消耗 ........................................................................................27 6.1.3 電機選擇 ....................................................................................................27 6.2 V 帶傳動的設計計算 .........................................................................................28 6.3 傳動零件設計計算 ...............................................................................................30 6.3.1 圓柱直齒輪傳動 ........................................................................................30 6.3.2 圓錐齒輪傳動 ............................................................................................34 6.3.3 鏈輪傳動 ....................................................................................................37 6.4 軸的設計計算和軸系零件的選定 .......................................................................40 6.4.1 輸入軸的設計與計算 ................................................................................40 6.4.2 大齒輪軸的設計計算 ................................................................................43 6.4.3 大圓錐齒輪軸的設計 ................................................................................43 6.4.4 輸出軸的設計 ............................................................................................44 6.4.5 軸承的校核 ................................................................................................45 6.5 浮動裝置內(nèi)彈簧的選用及計算 ...........................................................................46 6.6 箱體設計計算 .......................................................................................................48 6.7 本章小結 ...............................................................................................................48 結論 ....................................................................................................................................49 參考文獻 ...........................................................................................................................50 致謝 ....................................................................................................................................52