异型面平煤装置的特性分析与结构优化-机械制造及其自动化专业论文.docx

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异型面平煤装置的特性分析与结构优化-机械制造及其自动化专业论文.docx

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异型面平煤装置的特性分析与结构优化-机械制造及其自动化专业论文

T1亚PERFORMANCEANALYSISANDSTRUCTUREOPTIMIZATION OFHETEROGENEOUSSURFACEBREAKING-DO\\序SHOVEABST孔气CTBecauseofthewayofloadingcoalintothetrain，thecoaJintherniddleofthecarwillpileupwhiletherewiI1belesscoalinthebrimofthecar，therefore，thecoalmustbeleveledoff，thatistopushthecoalmoundedinthemiddletotheedgespacetillthetopsurfaceofcoalisleveledinordertoavoidriseandflyingofthecoalduringthetransportprocessandensurethetrainscarrying efficiency.Atpresent，mostofthebreaking-downshovesinusearerectangJewühaflatsection.However，theefficiencyof thiskindof breaking-downshovclSVCIγlowandthelevelingqualityispoor.白lemostobviousproblernisthatanextraartificiallevelingisneededtomeettherequirementofrailwaytransportationbecausethecoalinthemiddleandatthebackofthecarisstillpiledupduetothecoalc缸motbepushedtobothsidestimely.Therearealittleimprovement forsomebreaking-down shoves:welding acuminate prominentpartsinthemiddleoftherectangulararea，whichmakesiteasiertopushthecoaJ;althoughtheefficiencyofstreamingthecoalhasbeenimproved，theproblemisstil1notsolvedfundamentally，therefore，togetanidealeffectoflevelingcoal，theshapeoftheshove mustbeimproved.Aimingtoimprovethebreading-downshovetopushcoaltobothsidesoftheca飞thispaperfocusesontheoptimizingtheshapeofshovestructure;introducesdiscreteelementmethod tothelevelingcoalprocessandconductssimulationanalysiswithPFC3Dso仕飞鸟are.ThestudyinthispaperincIudes:1、Based on granular dynamics and contact mechanics in the discrete elernentmethod，themovementrulesandcontactforcechangeofcoalgranules111丁wilIbeanalyzedtheoreticallytofindoutthecon阳ctmodelofcoalgranulesintheprocessofleveling.2、Accordingtotheactualparametersofcoalinthecoalmine，conduct modelingoftheloadingcarwithPFC3Ddiscretesoftware，andanalyzetheequilibrium stateofthe model bythe so白waretoensure the optimizing ofbreaking-downshovestructurecanbecarriedoutinabalanceddiscreteelementcarmodels.3、UsingthewalIgranulesconceptofPFC3Dsoftware，simulateshovestructurebyusinggranulesgroupaηangeme时，inthiswaythecoordinatesof granules