直线振动筛的动力学分析与结构优化设计

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1、太原理工大学硕士研究生学位论文responsesanalysishavebeenfinished．Theresultsindicatethatthestructurewillhavenoresonance，butthefeedingendhasgreaterdisplacementandthemaximumdynamicstressofthedischargingmouthbaffleisclosetoallowablestressvalue．Basedontheaboveanalysisresults，thebaffle’structurewasmodified．Mean

2、while，centroidoftheZK1230vibratingscreendeviatedfromthelineofvibrationdirection12．04541TIIllbymeasuringinUGOneofthemostimportantcauseofunevenamplitudeisimpropercentroidposition，andtraditionalmethodisdifficulttoachieveoptimizationpurposes．Thispaperadoptedbean’straightlinefeasibledomainmetho

3、dtooptimizethescreenboxandpassedthelineofvibrationdirectionthroughthecentroid．Thedynamicanalysisresultsafteroptimizationshowthatthenewmethodisreasonableandeffectiveforthatthedisplacementundertheworkingfrequencyisimprovedandthestressconcentrationofthedischargingmouthdisappears，themaximumdyn

4、amicstressalsoreducesfrom88MPato42．31V[Pa．Thispaperfirsttimeappliestheadjustingcentroidmethodtooptimizevibratingscreenanddemonstrateitsrationalityandvaliditybytestingresult·Thispaperalsoproposesanewmethodofadjustingcentroidwhichisnamedbean’straightlinefeasibledomainmethod．Combinethevibrati

5、ngscreen’sactualproblemwithadvantagesofthetraditionalcentroiddesignmethod，thenewmethodoffersanewwayfortransformationoflinearvibratingscreenandhasreferencevalueforothersimilarproblems．IV太原理工大学硕士研究生学位论文KEYWORDS：linearvibratingscreen，dynamicanalysis，structuraloptimization，centroidadjustmentV太

6、原理工大学硕士研究生学位论文VI太原理工大学硕士研究生学位论文目录第一章绪论⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯11．1课题的研究背景和意义⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯一11．2筛分机械技术的发展⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．．21．2．1国外筛分机械发展概况⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．．21．2．2国内筛分机械发展概况⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯21．3筛分机械的用途及分类⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯一31．3．1筛分作业的种类⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯

7、⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯31．3．2筛分机械的种类和特点⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯41．4课题研究的内容及方案⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯一71．5本章小结⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯一8第二章直线振动筛的工作原理及参数计算⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯一92．1直线振动筛工作原理与结构分析⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯一92．1．1直线振动筛的结构组成⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯92．1．2直线振动筛