購買設計請充值后下載，，資源目錄下的文件所見即所得，都可以點開預覽，，資料完整，充值下載可得到資源目錄里的所有文件。。?！咀ⅰ浚篸wg后綴為CAD圖紙，doc,docx為WORD文檔，原稿無水印，可編輯。。。具體請見文件預覽，有不明白之處，可咨詢QQ:12401814
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···································································22
2.6.9鎮(zhèn)壓輪設計····································································23
2.6.10 地輪設計····································································23
第3章 傳動設計及播種技術措施···········································25
3.1傳動原理簡圖和動力傳遞路線圖····································25
3.1.1傳動原理簡圖·································································25
3.1.2動力傳動路線圖······························································25
3.2傳動原理·········································································25
3.3技術措施·········································································26
3.3.1播種均勻性和各行排量一致性措施·········································26
3.3.2降低破種率措施······························································27
3.3.3種肥同播時，肥料的利用率··················································27
第4章 零部件設計·······························································28
4.1種箱及肥箱設計·································································28
4.2開溝器設計及校核······························································29
4.3排種器···········································································31
4.4地輪參數(shù)確定···································································32
4.4.1輪子直徑和輪輞寬度的確定·················································32
4.4.2輪子滾動阻力計算····························································32
4.5電機和電瓶選擇及鏈輪設計···················································33
4.5.1電機總功率確定······························································33
4.5.2電動機及電瓶的選擇·························································34
4.5.3傳動比的確定·································································35
4.5.4鏈輪選擇及設計計算·························································36
4.6地輪軸設計······································································40
4.7鍵的校核·········································································47
4.8銷的校核·········································································48
4.9軸承的校核······································································48
第5章 電氣控制系統(tǒng)設計·····················································49
5.1電氣系統(tǒng)設計原則······························································49
5.2電氣元件的選擇·································································49
第6章 播種機使用·······························································52
6.1播種量調整······································································52
6.2實際操作說明···································································53
6.2.1播種作業(yè)前準備······························································53
6.2.2播種機的試播及作業(yè)·························································55
6.2.3播種機的保養(yǎng)與保管·························································56
6.2.4播種質量檢查·································································56
第7章 畢業(yè)設計小結····························································59
參考文獻·············································································61