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目錄
第1章 前言··········································································1
1.1播種機(jī)的常識(shí)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(jī)和免耕播種························································5
1.3播種工作過(guò)程和機(jī)械構(gòu)造·······················································5
1.3.1工作過(guò)程·······································································5
1.3.2機(jī)械構(gòu)造·······································································6
1.4播種機(jī)械的發(fā)展趨勢(shì)·····························································7
第2章 總體設(shè)計(jì)····································································9
2.1 概述···············································································9
2.2 設(shè)計(jì)任務(wù)········································································10
2.3 設(shè)計(jì)目的········································································10
2.4 動(dòng)力方案選擇···································································10
2.5 設(shè)計(jì)題目分析及設(shè)計(jì)思想·····················································12
2.6 設(shè)計(jì)主參數(shù)及機(jī)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(jī)架設(shè)計(jì)······································································14
2.6.5工作幅度······································································14
2.6.6 排種、排肥機(jī)構(gòu)設(shè)計(jì)·························································14
2.6.7開溝器設(shè)計(jì)····································································18
2.6.8覆土器設(shè)計(jì)···································································22
2.6.9鎮(zhèn)壓輪設(shè)計(jì)····································································23
2.6.10 地輪設(shè)計(jì)····································································23
第3章 傳動(dòng)設(shè)計(jì)及播種技術(shù)措施···········································25
3.1傳動(dòng)原理簡(jiǎn)圖和動(dòng)力傳遞路線圖····································25
3.1.1傳動(dòng)原理簡(jiǎn)圖·································································25
3.1.2動(dòng)力傳動(dòng)路線圖······························································25
3.2傳動(dòng)原理·········································································25
3.3技術(shù)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(shí)，肥料的利用率··················································27
第4章 零部件設(shè)計(jì)·······························································28
4.1種箱及肥箱設(shè)計(jì)·································································28
4.2開溝器設(shè)計(jì)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(dòng)阻力計(jì)算····························································32
4.5電機(jī)和電瓶選擇及鏈輪設(shè)計(jì)···················································33
4.5.1電機(jī)總功率確定······························································33
4.5.2電動(dòng)機(jī)及電瓶的選擇·························································34
4.5.3傳動(dòng)比的確定·································································35
4.5.4鏈輪選擇及設(shè)計(jì)計(jì)算·························································36
4.6地輪軸設(shè)計(jì)······································································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(shè)計(jì)·····················································49
5.1電氣系統(tǒng)設(shè)計(jì)原則······························································49
5.2電氣元件的選擇·································································49
第6章 播種機(jī)使用·······························································52
6.1播種量調(diào)整······································································52
6.2實(shí)際操作說(shuō)明···································································53
6.2.1播種作業(yè)前準(zhǔn)備······························································53
6.2.2播種機(jī)的試播及作業(yè)·························································55
6.2.3播種機(jī)的保養(yǎng)與保管·························································56
6.2.4播種質(zhì)量檢查·································································56
第7章 畢業(yè)設(shè)計(jì)小結(jié)····························································59
參考文獻(xiàn)·············································································61