液壓挖掘機(jī)反鏟裝置的力學(xué)性能分析與優(yōu)化研究.pdf

1、中南大學(xué)碩士學(xué)位論文液壓挖掘機(jī)反鏟裝置的力學(xué)性能分析與優(yōu)化研究姓名：胡雄偉申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：機(jī)械設(shè)計(jì)及理論指導(dǎo)教師：周宏兵20090519ABSTRACTBackhoedeviceiStheuppermostworkingdeviceofsmallandmediumsizedhydraulicexcavatorthedesignofthisdevicewillhaveadirectimpactontheperformanceoft

2、hemachineHowevertosuchcomplexsystemsasthestructureofBackhoedevice，thetraditionalproductdesignmethodwhosedevelopmentcycleislongandcostishigh，hasbeenunabletomeettheflexibledemandsofthemarketSo，inordertostudyingthereliedmec

3、hanicalpropertiesandoptimizingthisdevice，tointroductionthepowerful，convenientandlowcostvirtualprototypingtechnologytothedesignandresearchofexcavatorisnecessaryThispapersummarizestheresearchesofvirtualprototypingtechnolog

4、yintheexcavatorfieldandtheexistingproblems，andbasedonthekinematicsmodelinganddynamicmodelingofthehydraulicexcavatorbackhoedevice，researchesarecarriedoutasfollows：ThroughthesoftwareofPro／EngineerandADAMS，thevirtualprototy

5、peofthehydraulicexcavatorwasconstructedsuccessfully；FortheproblemofoverconstraintthatiSoftenoverlookedintheprocessofbuildingavirtualprototype，themethodchangeconstrains，removeequationsiSputforwardwhichprovidesachannelfort

6、hesolutionoftheproblemBasedonthevirtualprototype，themotionenvelopediagramofthebackhoedeviceiSdrawn，andthespecialjobsizeoftheexcavatoriSgot，whichisveryclosetoitsdesignvaluesAimingattheforceactedonkeyhingedjointsofthebackh

7、oedevice，thesimulationofthreetypicalworkingconditionsiScarriedoutBecauseoftheshortcomingsofthetraditionalcalculationmethod，thispaperusesthemethodthatamendstheparametersofsimulationaccordingtotheexperiments，getsthelargest

8、valueofdiggingforcegeneratedbytheexcavatorconvenientlyInaccordancewiththestrategyofcombinationmainobjectivelawandunityobjectivelawoptimizationdesigntotheexcavatorbackhoedeviceiScompletedandbettermechanicalperformanceiSob