小型電動助力播種機設(shè)計【直流雙行播種】【施肥、耙磨、除草】【小麥、玉米】【說明書+CAD】

小型電動助力播種機設(shè)計【直流雙行播種】【施肥、耙磨、除草】【小麥、玉米】【說明書+CAD】,直流,雙行播種,施肥、耙磨、除草,小麥、玉米,說明書+CAD,小型電動助力播種機設(shè)計【直流,雙行播種】【施肥、耙磨、除草】【小麥、玉米】【說明書+CAD】,小型,電動,助力,播種機,設(shè)計,直流,雙行,播種 目錄 第1章 前言··········································································1 1.1播種機的常識和技術(shù)現(xiàn)狀······················································1 1.2播種方式及常見播種類型······················································3 1.2.1條播········································································3 1.2.2穴播········································································4 1.2.3撒播········································································4 1.2.4精密播種···································································4 1.2.5聯(lián)合作業(yè)機和免耕播種···················································5 1.3播種工作過程和機械構(gòu)造······················································5 1.3.1工作過程···································································5 1.3.2機械構(gòu)造···································································6 1.4 播種機械的發(fā)展趨勢···························································7 第2章 總體設(shè)計···································································9 2.1 概述·············································································9 2.2 設(shè)計任務(wù)·······································································10 2.3 設(shè)計目的·······································································10 2.4 動力方案選擇·································································10 2.5 設(shè)計題目分析及設(shè)計思想····················································12 2.6 設(shè)計主參數(shù)及機構(gòu)類型確定·················································12 2.6.1工作速度·································································12 2.6.2播量的確定·······························································13 2.6.3種、肥箱的容積·························································13 2.6.4機架設(shè)計·································································14 2.6.5工作幅度·································································14 2.6.6 排種、排肥機構(gòu)設(shè)計···················································14 2.6.7開溝器設(shè)計·······························································18 2.6.8覆土器設(shè)計·······························································20 2.6.9鎮(zhèn)壓輪設(shè)計·······························································21 2.6.10 地輪設(shè)計·······························································22 第3章 傳動設(shè)計及播種技術(shù)措施···········································23 3.1傳動原理簡圖和動力傳遞路線圖·································23 3.1.1傳動原理簡圖····························································23 3.1.2動力傳動路線圖·························································23 3.2傳動原理·······································································23 3.3技術(shù)措施·······································································24 3.3.1播種均勻性和各行排量一致性措施····································24 3.3.2降低破種率措施·························································25 3.3.3種肥同播時，肥料的利用率············································25 第4章 零部件設(shè)計·······························································26 4.1種箱及肥箱設(shè)計·······························································26 4.2開溝器設(shè)計及校核····························································27 4.3排種器·········································································28 4.4地輪參數(shù)確定··································································29 4.4.1輪子直徑和輪輞寬度的確定············································29 4.4.2輪子滾動阻力計算·······················································30 4.5電機和電瓶選擇及鏈輪設(shè)計··················································30 4.5.1電機總功率確定·························································30 4.5.2電動機及電瓶的選擇····················································31 4.5.3傳動比的確定····························································32 4.5.4鏈輪選擇及設(shè)計計算····················································33 4.6地輪軸設(shè)計·····································································37 4.7鍵的校核·······································································44 4.8銷的校核·······································································45 4.9軸承的校核·····································································45 第5章 電氣控制系統(tǒng)設(shè)計·····················································47 5.1電氣系統(tǒng)設(shè)計原則·····························································47 5.2電氣元件的選擇·······························································47 第6章 播種機使用·······························································49 6.1播種量調(diào)整·····································································49 6.2實際操作說明··································································50 6.2.1播種作業(yè)前準(zhǔn)備·························································50 6.2.2播種機的試播及作業(yè)····················································52 6.2.3播種機的保養(yǎng)與保管····················································53 6.2.4播種質(zhì)量檢查····························································53 第7章播種機的三維建模····················································55 7.1基本零部件的建?！ぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁぁ?5 7.2零件的裝配·····································································56 7.3三維軟件學(xué)習(xí)心得·····························································57 第8章 畢業(yè)設(shè)計小結(jié)····························································58 參考文獻(xiàn)·············································································60