小型電動助力播種機設計【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造······················································5 1.3.1工作過程···································································5 1.3.2機械構造···································································6 1.4 播種機械的發(fā)展趨勢···························································7 第2章 總體設計···································································9 2.1 概述·············································································9 2.2 設計任務·······································································10 2.3 設計目的·······································································10 2.4 動力方案選擇·································································10 2.5 設計題目分析及設計思想····················································12 2.6 設計主參數(shù)及機構類型確定·················································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機架設計·································································14 2.6.5工作幅度·································································14 2.6.6 排種、排肥機構設計···················································14 2.6.7開溝器設計·······························································18 2.6.8覆土器設計·······························································20 2.6.9鎮(zhèn)壓輪設計·······························································21 2.6.10 地輪設計·······························································22 第3章 傳動設計及播種技術措施···········································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 零部件設計·······························································26 4.1種箱及肥箱設計·······························································26 4.2開溝器設計及校核····························································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鏈輪選擇及設計計算····················································33 4.6地輪軸設計·····································································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)設計·····················································47 5.1電氣系統(tǒng)設計原則·····························································47 5.2電氣元件的選擇·······························································47 第6章 播種機使用·······························································49 6.1播種量調整·····································································49 6.2實際操作說明··································································50 6.2.1播種作業(yè)前準備·························································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播種質量檢查····························································53 第7章播種機的三維建?！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?5 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 7.3三維軟件學習心得·····························································57 第8章 畢業(yè)設計小結····························································58 參考文獻·············································································60