【正文】 ........................................................................................................376 多功能磨粉機(jī)的設(shè)計(jì) ...............................................................................................38 磨 粉機(jī)的分類 ..........................................................................................................38 多功能磨粉機(jī)的基本結(jié)構(gòu)和工作原理 .......................................................................39 關(guān)鍵參數(shù)的確定 ......................................................................................................40 螺 旋升角的確定 ...............................................................................................40 驅(qū)動(dòng)功率的計(jì)算 ...............................................................................................41 主要零部件的結(jié)構(gòu)設(shè)計(jì) ............................................................................................42 軸的結(jié)構(gòu)設(shè)計(jì) ...................................................................................................42 磨片的結(jié)構(gòu)設(shè)計(jì) ...............................................................................................47 聯(lián)輥的結(jié)構(gòu)設(shè)計(jì) ................................................................................................47 調(diào)節(jié)手輪的設(shè)計(jì) ...............................................................................................48 粉碎齒套的設(shè)計(jì) ................................................................................................48 機(jī)體結(jié)構(gòu)的設(shè)計(jì) ...............................................................................................49 軸承的選取 ......................................................................................................49 聯(lián)軸器的選取 ...................................................................................................51 鍵的選擇 ..........................................................................................................51 標(biāo)準(zhǔn)件的選擇 ..................................................................................................51 料斗的設(shè)計(jì) .....................................................................................................51 生產(chǎn)能力的分析與確定 ............................................................................................52攀枝花學(xué)院本科畢業(yè)設(shè)計(jì)（論文）7 刃磨刀具機(jī)構(gòu)的設(shè)計(jì) ...............................................................................................53 刃磨刀具機(jī)構(gòu)的設(shè)計(jì)要求 ........................................................................................53 刃磨刀具機(jī)構(gòu)的總體結(jié)構(gòu) ........................................................................................53 刃磨刀具機(jī)構(gòu)零件的設(shè)計(jì) ........................................................................................54 砂輪的選取 ......................................................................................................54 軸的設(shè)計(jì) ..........................................................................................................54 防護(hù)罩的設(shè)計(jì) ...................................................................................................55 其余附件的設(shè)計(jì) ...............................................................................................558 抽水機(jī)的設(shè)計(jì) ...........................................................................................................57 抽水機(jī)的設(shè)計(jì)要求 ...................................................................................................57 抽水機(jī)的工作原理 ...................................................................................................57 抽水機(jī)的結(jié)構(gòu)組成及水泵的選取 ..............................................................................589 傳動(dòng)系統(tǒng)及其部件的設(shè)計(jì) .......................................................................................60 畫出傳動(dòng)系統(tǒng)簡(jiǎn)圖 ...................................................................................................60 電機(jī)的選擇 .............................................................................................................60 電機(jī)的功率 ......................................................................................................60 電機(jī)的選定 ......................................................................................................61 帶傳動(dòng)的設(shè)計(jì) ..........................................................................................................61 V 帶的設(shè)計(jì) .......................................................................................................62 帶輪的設(shè)計(jì) ......................................................................................................64 聯(lián)軸器的選取 ..........................................................................................................65 螺栓的選取 .............................................................................................................6510 總體機(jī)架的設(shè)計(jì) .....................................................................................................6611 安全操作及維護(hù) .....................................................................................................67 新型多功能組合農(nóng)用機(jī)的安全操作 .........................................................................67 新型多功能組合農(nóng)用機(jī)的維護(hù)與保養(yǎng) .....................................................................67結(jié)論 .................................................................................................................................69參 考 文 獻(xiàn) ...................................................................................................................70附錄 .................................................................................................................................71致 謝 ...............................................................................................................................731 緒論01 緒 論 國(guó)內(nèi)外農(nóng)業(yè)機(jī)械化的背景農(nóng)業(yè)機(jī)械包括農(nóng)用動(dòng)力機(jī)械、農(nóng)田建設(shè)機(jī)械、土壤耕作機(jī)械、種植和施肥機(jī)械、植物保護(hù)機(jī)械、農(nóng)田排灌機(jī)械、作物收獲機(jī)械、農(nóng)產(chǎn)品加工機(jī)械、畜牧業(yè)機(jī)械和農(nóng)業(yè)運(yùn)輸機(jī)械等。公元前 13 世紀(jì)就已使用銅犁頭進(jìn)行牛耕。在《齊民要術(shù)》(約 540)、 《耒耜經(jīng)》(約 880)、王禎《農(nóng)書》(約 1310)、 《天工開物》(1637)等古籍中，對(duì)各個(gè)時(shí)期農(nóng)業(yè)生產(chǎn)中使用的各種機(jī)械和工具都有詳細(xì)的記載。1936 年出現(xiàn)了第一臺(tái)馬拉的谷物聯(lián)合收獲機(jī)。由液壓系統(tǒng)操縱的鋤頭懸掛系統(tǒng)也使鋤頭的操縱和控制更為輕便、靈活。自 70 年代開始，電子技術(shù)逐步應(yīng)用于農(nóng)業(yè)機(jī)械作業(yè)過程的監(jiān)測(cè)和控制，逐步向作業(yè)過程的自動(dòng)化方向發(fā)展。到 1994 年，綜合計(jì)算的農(nóng)機(jī)化程度達(dá)到 40