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【正文】 ................................................................................................ 8 平行四邊形舉升機(jī)構(gòu) .......................................................................................... 9 傾斜機(jī)構(gòu)設(shè)計(jì) ...................................................................................................... 10 連桿滑塊機(jī)構(gòu) .................................................................................................... 11 液壓缸直推機(jī)構(gòu) ............................................................................................... 12 滑塊傾斜機(jī)構(gòu) ................................................................................................... 12 曲柄搖桿翻轉(zhuǎn)機(jī)構(gòu) ........................................................................................... 13 后廂門啟閉機(jī)構(gòu)設(shè)計(jì) ........................................................................................... 14 重力直接打開機(jī)構(gòu) ........................................................................................... 15 搖塊頂開機(jī)構(gòu) ................................................................................................... 15 四級連桿機(jī)構(gòu) ................................................................................................... 16 滑軌打開機(jī)構(gòu)機(jī)構(gòu) .......................................................................................... 17 機(jī)構(gòu)的組合 ......................................................................................................... 17 第 3 章 機(jī)構(gòu)設(shè)計(jì)尺寸設(shè)計(jì) ........................................................................................... 19 方案一尺寸設(shè)計(jì) .................................................................................................. 19 舉升機(jī)構(gòu)的尺寸設(shè)計(jì) ......................................................................................... 19 傾斜機(jī)構(gòu)尺寸設(shè)計(jì) ............................................................................................ 21 后廂門啟閉機(jī)構(gòu)尺寸設(shè)計(jì) ................................................................................. 24 機(jī)構(gòu)組合 .......................................................................................................... 25 II 方案二尺寸設(shè)計(jì) .................................................................................................. 26 舉升機(jī)構(gòu)的尺寸設(shè)計(jì) ......................................................................................... 26 傾斜機(jī)構(gòu)尺寸設(shè)計(jì) ............................................................................................ 27 后廂門啟閉 機(jī)構(gòu)尺寸設(shè)計(jì) ................................................................................. 30 機(jī)構(gòu)組合 .......................................................................................................... 31 第 4 章 機(jī)構(gòu)運(yùn)動(dòng)分析 ................................................................................................... 31 三維模型的建立 .................................................................................................. 31 部分零件圖 ...................................................................................................... 31 裝配體 .............................................................................................................. 34 機(jī)構(gòu)運(yùn)動(dòng)分析 ...................................................................................................... 37 組合方案一運(yùn)動(dòng)分析 ........................................................................................ 37 組合方案二運(yùn)動(dòng)分析 ........................................................................................ 41 第 5 章 機(jī)構(gòu)動(dòng)力分析 ................................................................................................... 46 組合方案一動(dòng)力分析 ........................................................................................... 46 . 1 機(jī)構(gòu)受力分析 ................................................................................................ 46 動(dòng)力仿真分析 ................................................................................................... 48 組合方案二動(dòng)力分析 ........................................................................................... 54 機(jī)構(gòu)受力分析 ................................................................................................... 54 動(dòng)力仿真分析 ................................................................................................... 56 第 6 章 方案比較與評價(jià) ............................................................................................... 61 第 7 章 設(shè)計(jì)工作總結(jié) ................................................................................................. 62 機(jī)械設(shè)計(jì)的目的: ............................................................................................... 62 機(jī)械設(shè)計(jì)的步驟: ............................................................................................... 62 設(shè)計(jì)中需要注意的幾個(gè)問題: ............................................................................. 63 機(jī)械設(shè)計(jì)的基本原則: ........................................................................................ 63 本次設(shè)計(jì)效果分析與改進(jìn)意見 ............................................................................. 64 第 9 章 收獲與體會(huì) ...................................................................................................... 64 第 10 章 致 謝 ............................................................................................................ 65 參考文獻(xiàn) ....................................................................................................................... 66 附錄 .............................................................................................................................. 67 III 附件一:部分零件圖和裝配體展示 ........................................................................... 67 附錄二: Adams 運(yùn)動(dòng)分析和動(dòng)力分析界面 ................................................................ 71 附錄三: 組合機(jī)構(gòu)簡圖(見 A3 圖紙) ..................................................................... 72 1 第 1 章 問題的提出 項(xiàng)目背景 自卸汽車 是常用的運(yùn)輸機(jī)械 , 車廂配有自動(dòng)傾卸 機(jī)構(gòu) 的汽車 , 又稱為翻斗車、工程車 , 由汽車底盤、液壓舉升機(jī)構(gòu)、取力 機(jī)構(gòu) 和貨廂組成。 按底盤 承載能力 可分為輕卡系列自卸、中噸系列自卸和大
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