QY20B汽車(chē)起重機(jī)卷筒機(jī)構(gòu)及其液壓系統(tǒng)設(shè)計(jì)說(shuō)明書(shū).doc

哈爾濱工程大學(xué)本科生畢業(yè)設(shè)計(jì)本科學(xué)生畢業(yè)設(shè)計(jì)QY20B汽車(chē)起重機(jī)卷筒機(jī)構(gòu)及其液壓系統(tǒng)設(shè)計(jì)系部名稱(chēng)：機(jī)電工程系專(zhuān)業(yè)班級(jí)：機(jī)械設(shè)計(jì)制造及其自動(dòng)化08-3班學(xué)生姓名：指導(dǎo)教師：職稱(chēng)：哈爾濱工程大學(xué)二一二年六月哈爾濱工程大學(xué)本科生畢業(yè)設(shè)計(jì)TheGraduationDesignforBachelorsDegreeTheDesignofQY20BTruckCranesCreelMechanismandHydrahlicSystem.Candidate：Specialty：TheDesignOfMechanicalManufactureandAutomationClass：08-3Supervisor：HeilongjiangInstituteofTechnology哈爾濱工程大學(xué)本科生畢業(yè)設(shè)計(jì)摘要近兩年，我國(guó)的起重機(jī)發(fā)展迅速，在各個(gè)領(lǐng)域的應(yīng)用也日趨廣泛，但與世界先進(jìn)水平還有一定的差距，主要原因是國(guó)內(nèi)配套零部件落后，材質(zhì)差，再有就是制造工藝水平低。本文對(duì)QY20B汽車(chē)起重機(jī)的設(shè)計(jì)做了研究，就汽車(chē)起重機(jī)整車(chē)做了大概的分析和論述，就汽車(chē)起重機(jī)卷筒機(jī)構(gòu)進(jìn)行了設(shè)計(jì)，對(duì)于中、小型汽車(chē)起重機(jī)的發(fā)展具有一定的積極意義QY20B型汽車(chē)起重機(jī)液壓系統(tǒng)的設(shè)計(jì)是該型起重機(jī)設(shè)計(jì)過(guò)程中最關(guān)鍵的一步。本文根據(jù)液壓系統(tǒng)的技術(shù)指標(biāo)對(duì)該系統(tǒng)進(jìn)行整體方案設(shè)計(jì)，對(duì)其功能和工作原理進(jìn)行分析，初步確定了系統(tǒng)各回路的基本結(jié)構(gòu)及主要元件，按照所給機(jī)構(gòu)性能參數(shù)和液壓性能參數(shù)進(jìn)行元件的選擇計(jì)算，通過(guò)對(duì)系統(tǒng)性能的驗(yàn)算和發(fā)熱校核，以滿(mǎn)足該起重機(jī)所要達(dá)到的要求。關(guān)鍵字:汽車(chē)起重機(jī)；卷筒機(jī)構(gòu)；汽車(chē)起重機(jī)；液壓系統(tǒng)；性能參數(shù)。哈爾濱工程大學(xué)本科生畢業(yè)設(shè)計(jì)ABSTRACTIntherecenttwoyears,ourcountryhoistcranedevelopmentrapid,ineachdomainapplicationalsodaybydaywidespread,butalsohasthecertaindisparitywiththeworldadvancedlevel,themainreasonisthedomesticnecessarysparepartbackward,materialqualitybad,againhasismakesthetechnologicalleveltobelow.ThisarticlehasdonetheresearchtotheQY20Bautohoistdesign,theautohoistentirevehiclehasmadethegeneralanalysisandtheelaboration,theautohoistrotationorganizationhascarriedonthedesign,regardingthecenter,thesmallautohoistdevelopmenthadthecertainpositivesense.ModelQY20Bautomobilecranehydraulicpressuresystematicdesignthistypehoistthemostkeyoneofthedesignprocess.Thistextanalyses,demandtocarryontheschemetoworkoutonthisperformancesystematicinhydraulicpressure.Provetoitsfunctionandoperationprinciplehaveconfirmedthebasicstructureofsystemeveryreturncircuitandmaincomponenttentatively.Accordingtogivingtheorganizationperformanceparametersandchoiceofcarryingonthecomponentofperformanceparameterofhydraulicpressuretocalculate.Throughtothecheckingcomputationsandgeneratingheattocheckofsystematicfunction,inordertorespondtotherequestthatthishoist