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MACROBUTTONMTEditEquationSection2SEQMTEqn\r\hSEQMTSec\r1\hSEQMTChap\r1\h本科生畢業(yè)論文〔設(shè)計(jì)〕題目大豆玉米間作播種機(jī)設(shè)計(jì)與傳動(dòng)計(jì)算學(xué)院機(jī)電工程學(xué)院專業(yè)班級農(nóng)業(yè)機(jī)械化及其自動(dòng)化08級2班學(xué)生姓名撰寫日期:2021年5月22日
摘要間作套種能夠充分利用空間和邊行優(yōu)勢,提高土壤養(yǎng)分,增加作物的抗逆能力,提高土地利用率和單位面積產(chǎn)量。雖然市場上播種機(jī)的種類繁多,但缺乏針對大豆玉米間作套種的播種機(jī)。為了解決大豆玉米間作套種種植的問題,我們研究和設(shè)計(jì)了大豆玉米間作播種機(jī)。本文設(shè)計(jì)的大豆玉米間作播種選擇了轉(zhuǎn)倉式精密排種器,鋤鏟式開溝器和帶有輪刺直徑較大的地輪,播種機(jī)整機(jī)采用了地輪后置單體式,并進(jìn)行了地輪軸和中間傳動(dòng)軸設(shè)計(jì);在傳動(dòng)設(shè)計(jì)計(jì)算中主要論述了播種機(jī)1級、2級傳動(dòng)計(jì)算和鏈輪的設(shè)計(jì)。大豆玉米間作播種機(jī)與傳統(tǒng)的播種機(jī)相比,新穎之處在于播種機(jī)可以同時(shí)播種玉米、大豆和為了防止地輪的滑移,采用了4個(gè)地輪共同帶動(dòng)中間傳動(dòng)軸,保證播種機(jī)精密播種質(zhì)量。設(shè)計(jì)中在考慮實(shí)用的同時(shí),兼顧經(jīng)濟(jì)節(jié)約,從而到達(dá)結(jié)構(gòu)合理、生產(chǎn)本錢低目的。該機(jī)一次作業(yè)可完成破茬開溝、播種和鎮(zhèn)壓等工序,作業(yè)時(shí)開溝均勻,播種作業(yè)質(zhì)量高,可滿足黃淮海地區(qū)農(nóng)藝要求。關(guān)鍵字:大豆;玉米;間作;播種機(jī);傳動(dòng)設(shè)計(jì)TheDesignandTransmissionCalculationofSoybean-cornInterplantingSeedingMachineAbstractIntercroppingcanmakefulluseofspaceandedgelineadvantage,improvesoilnutrient,increasecropresilienceandimprovethelandutilizationrateandyieldperunitofarea.Althoughthemarketofthemachinevarious,butitislackofsoybean-corminterplantingseedingmachine.Inordertosolvetheproblemofsoybean-corninterplant,weresearchedanddesignedsoybean-corminterplantingseedingmachine.Inthispaper,themachinechosewarehousetypeprecisionseedmeteringdevice,Shoveltypeditcherandthelargerdiameterlandwheelwithhavingthorn,Thisseedingmachineadoptstherearwheel.Thispaperhavedesignedtheaxleandthemiddletransmission.Inthechapteroftransmissiondesignandcalculation,Itmainlydiscussedthefirstandsecondlinecoulddrivecalculationandthedesignofthechain.Comparedwiththetraditionalmachine,thismachinecansowcornandsoybeanatthesametime.Inordertopreventlandwheelslippage,weusethestyleoffourlandwheeldrivingtransmissionshaft.Consideringpracticalatthesametime,ittakeaccountofeconomiceconomy.Thisplantercanperformtherootstalkcutting,opening,sendingandpackingoperationsonce.KeyWords:soybean;corn;interplanting;Seeder;DesignofTransmission目錄TOC\o"1-3"\h\u1引言 )其中:—軸的計(jì)算應(yīng)力,—軸所受的彎矩,—軸所受的扭矩,—軸的抗彎截面系數(shù),—對稱循環(huán)變應(yīng)力的軸的彎曲應(yīng)力進(jìn)行校核時(shí),通常只校核軸上承受最大彎矩和扭矩的截面。因?yàn)檩S單向旋轉(zhuǎn),扭轉(zhuǎn)切應(yīng)力為脈動(dòng)循環(huán)變應(yīng)力,取,查?機(jī)械設(shè)計(jì)?一書可知:,由公式〔33〕可得軸的最危險(xiǎn)截面計(jì)算應(yīng)力為:前面選定軸的材料為45鋼,調(diào)質(zhì)處理,由?機(jī)械設(shè)計(jì)?表15-1查的。因?yàn)?,故平安?結(jié)語本文從以下幾個(gè)方面對大豆玉米間作套種播種機(jī)進(jìn)行了設(shè)計(jì)研究:〔1〕分析了我國大豆、玉米種植情況和國內(nèi)外播種技術(shù)?!?〕根據(jù)機(jī)械式精密播種機(jī)的特點(diǎn),本文設(shè)計(jì)的播種機(jī)選用了轉(zhuǎn)倉式精密排種器?!?〕為了減少滑移率,本文設(shè)計(jì)了帶有輪刺的地輪和采用四個(gè)地輪共同驅(qū)動(dòng)中間傳動(dòng)軸。〔4〕考慮鏈傳動(dòng)的傳動(dòng)比和鏈輪直徑,本文設(shè)計(jì)了2級傳動(dòng)。通過以上幾點(diǎn)的設(shè)計(jì)研究,本文設(shè)計(jì)的大豆玉米間作播種機(jī)可以同時(shí)播種大豆和玉米,通過更換排種器上面的鏈輪可以改變株距,該播種機(jī)也可以專播大豆或玉米。參考文獻(xiàn)[1]梁泉,尹元萍,楊通新玉米大豆間作實(shí)驗(yàn)初步研究[J].耕作與栽培,2004〔5〕.[2]楊文鈺.開展玉米套種大豆確保旱年增收[J].大豆科技,2004〔03):63-64.[3]丁元法.精密播種機(jī)現(xiàn)在及開展趨勢[J].山東農(nóng)機(jī),2001〔6〕:3~5.[4]胡霞.玉米播種收獲機(jī)械操作與維修[M].北京:化學(xué)工業(yè)出版社,2021.[5]李寶筏主編.農(nóng)業(yè)機(jī)械學(xué)[M].北京:中國農(nóng)業(yè)出版社,2003.[6]張波屏.播種機(jī)械設(shè)計(jì)原理[M].北京:機(jī)械工業(yè)出版社,1982.[7]璞良貴.機(jī)械設(shè)計(jì)[M].北京:高等教育出版社,2007.[8]中國農(nóng)業(yè)機(jī)械化科學(xué)研究院.農(nóng)業(yè)機(jī)械設(shè)計(jì)手冊[M].北京:中國農(nóng)業(yè)科學(xué)技術(shù)出版社,2007.[9]何銘新,錢可強(qiáng).機(jī)械制圖[M].北京:高等教育出版社,2021.[10]張琳娜.精度設(shè)計(jì)與質(zhì)量控制根底[M].北京:中國計(jì)量出版社,2006.[11]孫維連,魏鳳蘭.工程材料[M].北京:中國農(nóng)業(yè)大學(xué)出版社,2006.[12]駱?biāo)鼐煸婍?機(jī)械課程設(shè)計(jì)簡明手冊[M].北京:化學(xué)工業(yè)出版社,2021.[13]王先逵.機(jī)械制造工藝學(xué)[M].北京:機(jī)械工業(yè)出版社,2021.[14]劉鴻文.材料力學(xué)[M].北京:高等教育出版社,2021.[15]OrlovP.FundamentalsofMachineDesign.KatsonPubl.House,1985.[16]MechanicalDrive.MachineDesign.52(14),1980.致謝在即將完成論文之際,我要衷心感謝在寫論文期間一直給我關(guān)心和幫助的人們,正是他們的鼓勵(lì)和支持,才使我一如既往地投入到學(xué)習(xí)中去,并從中學(xué)會了面對失敗和困難,體會了成功的歡樂與興奮。還要感謝關(guān)心和幫助以及所有老師四年來悉心的關(guān)心和教導(dǎo)。感謝我的親人,一直以來他們都是我求學(xué)道路上的堅(jiān)強(qiáng)后盾!是我的支柱!感謝所有幫助過我的人,在次我衷心的祝他們身體健康,一生平安!附錄1:大豆玉米間作播種機(jī)裝配圖附錄2:地輪軸附錄3:小鏈輪附錄4:種箱附錄5:地輪附錄6:鏈傳動(dòng)部裝圖指導(dǎo)教師評語〔主要評價(jià)論文的工作量、試驗(yàn)數(shù)據(jù)的可靠性、論文的主要內(nèi)容與特點(diǎn)、寫作水平等〕:簽名:
年月日辯論委員會評語及論文成績〔主要評價(jià)論文的性質(zhì)、難度、質(zhì)量、綜合訓(xùn)練、辯論情況、缺乏等。評定論文成績〕:主任委員簽名:年月日本科生畢業(yè)設(shè)計(jì)〔論文〕任務(wù)書設(shè)計(jì)〔論文〕題目大豆玉米間作播種機(jī)設(shè)計(jì)與傳動(dòng)計(jì)算學(xué)院機(jī)電工程學(xué)院專業(yè)農(nóng)業(yè)機(jī)械化及其自動(dòng)化班級08級農(nóng)機(jī)〔2〕班學(xué)號2012年論文〔設(shè)計(jì)〕選題的來源、目的與意義:論文選題來源于指導(dǎo)老師推薦課題。目的:實(shí)現(xiàn)大豆玉米間作播種機(jī)械化。意義:減輕大豆玉米間作播種的勞動(dòng)強(qiáng)度,實(shí)現(xiàn)大豆玉米間作播種機(jī)械化。設(shè)計(jì)〔論文〕的主要內(nèi)容:〔1〕概述我國大豆玉米種植情況和國內(nèi)外播種技術(shù)開展。〔2〕大豆玉米間作播種機(jī)主要結(jié)構(gòu)的分析與設(shè)計(jì),包括排種器的選擇、地輪的設(shè)計(jì)、地輪軸的設(shè)計(jì)、中間傳動(dòng)軸的設(shè)計(jì)、開溝器的的設(shè)計(jì)等?!?〕傳動(dòng)局部的設(shè)計(jì)計(jì)算,主要設(shè)計(jì)了1級鏈傳動(dòng)、2級鏈傳動(dòng)?!?〕對地輪軸進(jìn)行了校核。進(jìn)度方案〔進(jìn)度時(shí)間、主要工作內(nèi)容〕:2012-3-5至2012-3-10查閱資料,填寫開題報(bào)告。2012-3-11至2012-3-25產(chǎn)品設(shè)計(jì)構(gòu)思,文獻(xiàn)綜述2012-3-26至2012-4-30繪制大豆玉米間作播種機(jī)二維圖2012-5-1至2012-5-22撰寫畢業(yè)論文主要參考文獻(xiàn):[1]胡霞.玉米播種收獲機(jī)械操作與維修[M].北京:化學(xué)工業(yè)出版社,2021.[2]璞良貴.機(jī)械設(shè)計(jì)[M].北京:高等教育出版社,2007.[3]李寶筏主編.農(nóng)業(yè)機(jī)械學(xué)[M].北京:中國農(nóng)業(yè)出版社,2003.[4]張波屏.播種機(jī)械設(shè)計(jì)原理[M].北京:機(jī)械工業(yè)出版社,1982論文〔設(shè)計(jì)〕工作起訖日期:2012年3月5日指導(dǎo)教師〔簽名〕院長/主任〔簽名〕aganemploymenttribunalclaiEmloymenttribunalssortoutdisagreementsbetweenemployersandemployees.Youmayneedtomakeaclaimtoanemploymenttribunalif:youdon'tagreewiththedisciplinaryactionyouremployerhastakenagainstyouyouremployerdismissesyouandyouthinkthatyouhavebeendismissedunfairly.Formoreinformu,takeadvicefromoneoftheorganisationslistedunder
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openeddisciplinaryproceedingsagainstCSKA
forthe"racistbehaviouroftheirfans"during
City's2-1win.MichelPlatini,presidentofEuropeanfootball'sgoverningbody,hasalsoorderedanimmediateinvestigationintothereferee'sactions.CSKAsaidtheywere"surprisedanddisappointed"byToure'scomplaint.InastatementtheRussiansideadded:"WefoundnoracistinsultsfromfansofCSKA."Agehasreachedtheendofthebeginningofaword.Maybeguiltyinhisseemstopassingalotofdifferentlifebecametheappearanceofthesameday;Maybebackinthepast,tooneselftheparanoidweirdbeliefdisillusionment,thesedays,mymindhasbeenverymessy,inmymindconstantly.Alwaysfeeloneselfshouldgotodosomething,orwritesomething.Twentyyearsoflifetrajectorydeeplyshallow,suddenlyfeelsomething,doit.一字開頭的年齡已經(jīng)到了尾聲?;蛟S是愧疚于自己似乎把轉(zhuǎn)瞬即逝的很多個(gè)不同的日子過成了同一天的樣子;或許是追溯過去,對自己那些近乎偏執(zhí)的怪異信念的醒悟,這些天以來,思緒一直很凌亂,在腦海中不斷糾纏。總覺得自己似乎應(yīng)該去做點(diǎn)什么,或者寫點(diǎn)什么。二十年的人生軌跡深深淺淺,突然就感覺到有些事情,非做不可了。Theendofourlife,andcanmeetmanythingsreallydo?而窮盡我們的一生,又能遇到多少事情是真正地非做不可?Duringmychildhood,thinkluckymoneyandnewclothesarenecessaryforNewYear,butastheadvanceoftheage,willbemoreandmorefoundthatthosethingsareoptional;Juniorhighschool,thoughttohaveacrushonjustmeansthattherealgrowth,butoverthepastthreeyearslater,hiswritingofalumniinpeace,suddenlyfoundthatisn'treallygrowup,itseemsisnotsoimportant;Theninhighschool,thinkdon'twanttogiveventtooutyourinnervoicecanbeinthehighschoolchildrenofthefeelingsinaperiod,butwaseventuallyinfarctionwhengraduationpartyinthethroat,lateragainstoodonthepitchhehassweatprofusely,lookedathisthrownabasketballhoops,suddenlyfoundhimselfhasalreadycan'trememberhisappearance.童年時(shí),覺得壓歲錢和新衣服是過年必備,但是隨著年齡的推進(jìn),會越來越發(fā)現(xiàn),那些東西根本就可有可無;初中時(shí),以為要有一場暗戀才意味著真正的成長,但三年過去后,自己心平氣和的寫同學(xué)錄的時(shí)候,突然就發(fā)現(xiàn)是不是真正的成長了,好似并沒有那么重要了;然后到了高中,覺得非要吐露出自己的心聲才能為高中生涯里的懵懂情愫劃上一個(gè)句點(diǎn),但畢業(yè)晚會的時(shí)候最終還是被堵塞在了咽喉,后來再次站在他曾經(jīng)揮汗如雨的球場,看著他投過籃球的球框時(shí),突然間發(fā)現(xiàn)自己已經(jīng)想不起他的容顏。Originally,thisworld,canproduceachemicalreactiontoanevent,inadditiontoresolutely,havetodo,andtime.原來,這個(gè)世界上,對某個(gè)事件能產(chǎn)生化學(xué)反響的,除了非做不可的堅(jiān)決,還有,時(shí)間。Aperson'stime,yourideasarealwaysspecialtoclear.Want,want,lineisclear,asifnothingcouldshakehis.Alsoonceseemedtobedeterminedtodosomething,butmoreoftenishebackedoutatlast.Dislikehiscowardice,finallyfoundthattherearealotoflove,therearealotofmiss,likeshadowreallyhavebeendoomed.Thosewhodo,justgreenyearsoneselfgiveoneselfanarminjection,orisaself-righteousspiritual.一個(gè)人的時(shí)候,自己的想法總是特別地清晰。想要的,不想要的,界限明確,好似沒有什么可以撼動(dòng)自己。也曾經(jīng)好似已經(jīng)下定了決心去做某件事,但更多的時(shí)候是最后又打起了退堂鼓。嫌惡過自己的怯懦,最終卻發(fā)現(xiàn)有很多緣分,有很多錯(cuò)過,好似冥冥之中真的已經(jīng)注定。那些曾經(jīng)所謂的非做不可,只是青蔥年華里自己給自己注射的一支強(qiáng)心劑,或者說,是自以為是的精神寄托罷了。Atthemoment,theskyisdark,theairisfreshfactorafterjustrained.Suddenlythoughtofblueplaidshirt;Thosewerebrokenintovariousshapesofstationery;Fromthecorneratthebeginningofdeepfriendship;Havedeclaredtheendoftheencounterthathaven'tstartplanning...Thoseyears,thosedaysofdo,finally,likeyouth,willendinourlife.此刻,天空是陰暗的,空氣里有著剛下過雨之后的清新因子。突然想到那件藍(lán)格子襯衫;那些被折成各種各樣形狀的信紙;那段從街角深巷伊始的友誼;還有那場還沒有開始就宣告了終結(jié)的邂逅方案……那些年那些天的非做不可,終于和青春一樣,都將在我們的人生中謝幕。Baumgartnerthedisappointingnews:Missionaborted.rplaysanimportantroleinthismission.Startingattheground,conditionshavetobeverycalm--windslessthan2mph,withnoprecipitationorhumidityandlimitedcloudcover.Theballoon,withcapsuleattached,willmovethroughthelowerleveloftheatmosphere(thetroposphere)whereourday-to-dayweatherlives.ItwillclimbhigherthanthetipofMountEverest(5.5miles/8.85kilometers),driftingevenhigherthanthecruisingaltitudeofcommercialairliners(5.6miles/9.17kilometers)andintothestratosphere.Ashecrossestheboundarylayer(calledthetropopause),ecanexpectalotofturbulence.Weoftencloseourselvesoffwhentraumaticeventshappeninourlives;insteadoflettingtheworldsoftenus,weletitdriveusdeeperintoourselves.Wetrytodeflectthehurtandpainbypretendingitdoesn’texist,butalthoughwecantrythisallwewant,intheend,wecan’thidefromourselves.Weneedtolearntoopenourheartstothepotentialsoflifeandlettheworldsoftenus.生活發(fā)生不幸時(shí),我們常常會關(guān)上心門;世界不僅沒能慰藉我們,反倒使我們更加消沉。我們假裝一切仿佛都不曾發(fā)生,以此試圖忘卻傷痛,可就算隱藏得再好,最終也還是騙不了自己。既然如此,何不嘗試翻開心門,擁抱生活中的各種可能,讓世界感化我們呢?Wheneverwestarttoletourfearsandseriousnessgetthebestofus,weshouldtakeastepbackandre-evaluateourbehavior.Theitemslistedbelowaresixwaysyoucanopenyourheartmorefullyandcompletely.當(dāng)恐懼與焦慮來襲時(shí),我們應(yīng)該退后一步,重新反思自己的言行。下面六個(gè)方法有助于你更完滿透徹地敞開心扉。Wheneverapainfulsituationarisesinyourlife,trytoembraceitinsteadofrunningawayortryingtomaskthehurt.Whenthesadnessstrikes,takeadeepbreathandleanintoit.Whenwerunawayfromsadnessthat’sunfoldinginourlives,itgetsstrongerandmorereal.Wetakeanemotionthat’sfleetingandmakeitasolidevent,insteadofsomethingthatpassesthroughus.當(dāng)生活中出現(xiàn)痛苦的事情時(shí),別再逃跑或隱藏痛苦,試著擁抱它吧;當(dāng)悲傷來襲時(shí),試著深呼吸,然后直面它。如果我們一味逃避生活中的悲傷,悲傷只會變得更強(qiáng)烈更真實(shí)——悲傷原本只是稍縱即逝的情緒,我們卻固執(zhí)地耿耿于懷Byutilizingourbreathwesoftenourexperiences.Ifwedamthemup,ourliveswillstagnate,butwhenwekeepthemflowing,weallowmorenewnessandgreaterexperiencestoblossom.深呼吸能減緩我們的感受。屏住呼吸,生活停滯;呼出呼吸,更多新奇與經(jīng)歷又將拉開序幕。2.EmbracetheuncomfortableWeallknowwhatthattwingeofanxietyfeelslike.Weknowhowfearfeelsinourbodies:thetensioninournecks,thetightnessinourstomachs,etc.Wecanpracticeleaningintothesefeelingsofdiscomfortandletthemshowuswhereweneedtogo.我們都經(jīng)歷過焦灼的煎熬感,也都感受過恐懼造成的生理反響:脖子僵硬、胃酸翻騰。其實(shí),我們有能力面對這些痛苦的感受,從中領(lǐng)悟到出路。Theinitialimpulseistorunaway—totryandsuppressthesefeelingsbynotacknowledgingthem.Whenwedothis,wecloseourselvesofftothepartsofourlivesthatweneedtoexperiencemost.Thenexttimeyouhavethisfeelingofbeingtrulyuncomfortable,doyourselfafavorandleanintothefeeling.Actinspiteofthefear.我們的第一反響總是逃避——以為否認(rèn)不安情緒的存在就能萬事大吉,可這也恰好阻礙了我們經(jīng)歷最需要的生活體驗(yàn)。下次感到不安時(shí),不管有多害怕,也請?jiān)囍赂颐鎸Π伞?.Askyourheartwhatitwants傾聽內(nèi)心We’reoftenconfusedatthenextsteptotake,makingprosandconslistsuntiloureyesbleedandourbrainsaresore.Insteadofalwaystakingthisapproach,whatifweengagedanewpartofourselvesthatisn’tusuallyinvolvedinthedecisionmakingprocess?我們常對未來猶疑不定,反復(fù)考慮利弊直到身心俱疲。與其一味顧慮重重,
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