目錄1引言.11.1課題背景和科學(xué)意義.11.2我國(guó)草業(yè)機(jī)械工程系統(tǒng)趨勢(shì).21.2.1我國(guó)草業(yè)工程系統(tǒng)趨勢(shì)圖的構(gòu)造.21.2.2趨勢(shì)圖提出的依據(jù).21.2.3實(shí)行趨勢(shì)圖的意義.31.2.4草業(yè)工程發(fā)展趨勢(shì)圖揭示的內(nèi)容.31.3我國(guó)草業(yè)機(jī)械工程的發(fā)展.42技術(shù)任務(wù)書.52.1設(shè)計(jì)的主要內(nèi)容.52.2總體方案設(shè)計(jì).52.3牧草切根機(jī)切刀驅(qū)動(dòng)機(jī)構(gòu)的設(shè)計(jì).62.4切根寬度和切根深度的設(shè)計(jì).92.5傳動(dòng)齒輪設(shè)計(jì).102.6皮帶傳動(dòng)設(shè)計(jì).112.7行走輪的選型設(shè)計(jì).122.7.1行走輪的設(shè)計(jì)要求.122.7.2行走輪的結(jié)構(gòu).122.7.3行走輪的安裝.122.7.4行走輪轉(zhuǎn)速的計(jì)算.133設(shè)計(jì)計(jì)算說明書.133.1牧草切根機(jī)機(jī)主要技術(shù)參數(shù).133.2配套動(dòng)力的選用.144標(biāo)準(zhǔn)化審查報(bào)告.144.1產(chǎn)品圖樣的審查.144.2產(chǎn)品技術(shù)文件的審查.154.3標(biāo)準(zhǔn)件的使用情況.154.4審查結(jié)論.15結(jié)論.16參考文獻(xiàn).17致謝.19牧草切根機(jī)設(shè)計(jì)摘要為了改良退化草場(chǎng)，提高草場(chǎng)綜合生產(chǎn)能力，實(shí)現(xiàn)環(huán)境保護(hù)和畜牧業(yè)發(fā)展的良性互動(dòng),研制了一種牧草切根機(jī)具。該切根機(jī)具在草地高板結(jié)的情況下可以順利入土切根，切斷根莖型或根莖疏叢型牧草的橫走根莖，促進(jìn)牧草復(fù)壯和自我繁殖。針對(duì)典型草場(chǎng)板結(jié)嚴(yán)重且橫走根莖錯(cuò)節(jié)致使自繁促生能力下降等問題,設(shè)計(jì)了牧草切根機(jī)具。該機(jī)采用凸輪機(jī)構(gòu)驅(qū)動(dòng)直切刀對(duì)牧草進(jìn)行垂直切根,減小了切根阻力和切縫寬度,通過簡(jiǎn)單操作可實(shí)現(xiàn)對(duì)不同間距、不同深度牧草進(jìn)行切根作業(yè),從而達(dá)到切斷亞表層下的橫走根莖、改良草地,擴(kuò)繁促生的效果。經(jīng)速度、加速度和受力分析證明,該機(jī)滿足了設(shè)計(jì)要求,是比較理想的牧草切根機(jī)械。關(guān)鍵詞:牧草切根機(jī)直切刀設(shè)計(jì)DesignofRejuvenationandAccelerationRoot2cuttingMachineAbstractInordertoamelioratethenaturaldegenerativeprairiestopromotethecomprehensiveproductioncapacityofprairieandtoachievetheinterrelationbetweenenvironmentprotectionandthedevelopmentofstockbreedingasetofroot-cuttingmachineforherbageswasdesigned.Theroot-cuttingmachinecanworkundertheconditionofgreathardnessmeadowcutofftheundergroundcreepingrhizomeoftherhizomegrassandpromotetherejuvenationandautosynthesisofthepasture.Inordertocountertheproblemofreducedhealthpromotionabilityintypicalgrasswithcompactedroots,arootcuttingmachinewasdesignedforpasture.Themachineusedcam2drivenofdirectcuttertocutrootvertically,greatlyreducingresistanceandperturbationsofsoilsurfacewhilecuttingtheroot,whichreachedeasyworkinvariesofforage.Themachinedestroyedsolidsoil,improvedgrassland,andincreasedgrassyield.Asprovenbyanalyzingthevelocity,accelerationandforceofthemachinewasabletomeettheneedsofdesigning.Itisamoreidealagricu