1、河北農(nóng)業(yè)大學(xué)碩士學(xué)位論文小麥對行免耕播種機(jī)設(shè)計與有限元分析姓名：姜海勇申請學(xué)位級別：碩士專業(yè)：農(nóng)業(yè)機(jī)械化工程指導(dǎo)教師：張晉國20050611DesignandFiniteElementAnalyseofRowcontrolledNotillageWheatDrillAuthor：JiangHalyongTutor：ZhangjinguoSpecialty：AgriculturalMechanizationEngineeringAbstr
2、actItisasignificativemissionforthepersonsmajoringinagriculturemechanicstospreadconservationagriculture，especiallyintheregionadoptingthedoublecroppingmodeThecultureconditionintheseareasgivessomespecialproblemtodrillForexa
3、mpleitispressingtoplantwheatasthefollowCOurSeofmaize；AtthattimethestalkscoveriSSOheavyandthestalksaresoflexilethattheblockisserious；Thebushymaizemotmakestheearthsurfacetooroughtodrillinthenotillageprocedure；Andseedbarene
4、ssisfamiliarwhenadclptingmachineswithgravity—root—brokenmechanisms，etcPresently，mostnativeorforeignno—tillagedrillcarlnotfinishtheworksmoothlyDesigningandmanufacturing2BMD一12rowcontrollednotillagewheatdrillhavebeenrecite
5、dinthisarticlebasedontheanalysisandstudiesoftheintentionandprinciplesoftheconservationtillageStripshatterantiblockingtechnologyisimportedMaketheknivesofpulverizerrnnthroughtheabuttedfurrowopenersstemstoeliminatethejamDra
6、wthethreedimensionalmodelofthedrillinPro／Engineerandmakethesimulationofthegimbaltransmissionsh雒rotatinginthesuspensionframetoquickenthedesignstepsandadvancethequalityThemainframeofthedrillhasainferiorstabilizationforthe2
7、2mbreadthandhighspeed(1415r／min)rotationofthemainshaftSodothemodeanalysisinthefiniteelementanalysissoftwareANSYSandmakeappropriateremedyforthemainframeandthemainshafcGetacompactfirmsteadymodelinthesoftwareinterfaceThefir
8、stsampledrillhadbeenfinishedinJulyof2003Severalexperiments(about10hm2)indicatesthatthedesignhasachievedthemainaimsTheblockCanbeeliminatedwhentheknivesofpulverizerrulathroughtheabuttedfurrowopenerstemsTheproblemofroughsee
9、dingbedisavoidedintheuseofrowcontrolledmethodItismoreappropriatetothedefinitionofconservativetillagefordisturbinglesssoilSeedingandfertilizationcanbefinishedinthesingleCOurSeinthefieldwimaveragecoverdegreeof4kg／m2andallm
