资源描述：
《振动筛毕业论文外文文献翻译》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。
1、DynamicsandscreeningcharacteristicsofavibratingscreenwithvariableellipticaltraceHEXiao-mei,LIUChu-shengSchoolofMechanicalandElectricalEngineering,ChinaUniversityofMining&Technology,Xuzhou,Jiangsu221116,ChinaAbstract:theidealmotioncharacteristicsforthevibratingscreenwaspr
2、esented,vibratingscreenwithvariableellipticaltracewasproposed.Anaccuratemechanicalmodelwasconstructedaccordingtotherequiredstructuralmotionfeatures.Applyingmulti-degree-of-freedomvibrationtheory,characteristicsofthevibratingscreenwasanalyzed.Kinematicsparametersofthevibr
3、atingscreenwhichmotiontraceswerelinear,circularorellipticalwereobtained.Thestablesolutionsofthedynamicequationsgavethemotionsofthevibratingscreenbymeansofcomputersimulations.Technologicalparameters,includingamplitude,movementvelocityandthrowingindex,offivespecificpointsa
4、longthescreensurfaceweregainedbytheoreticalcalculation.Theresultsshowthatthetracesofthenewdesignedvibratingscreenfollowtheidealscreeningmotion.Thescreeningefficiencyandprocessingcapacitymaythusbeeffectivelyimproved.Keywords:variableellipticaltrace;screeningprocesswithcon
5、stantbedthickness;dynamicmodel;motioncharacteristic;screeningcharacteristics1IntroductionScreeningoperationsareanimportantpartofcoalprocessing.Thevibratingscreenisoneofthemostextensivelyusedscreeningtools.Vibratingscreens,suchaslinearvibratingscreen,circularvibratingscre
6、enorellipticalvibratingscreen,haveasimpletranslationalmotion.Themotionfollowsthesamepatheverywhereonthescreenandsothescreenhasconstanttransportvelocityandthrowingindex,whichleadstolowscreeningefficiency.Augmentingthethrowingindextoimprovebreakstheexcitingmotorsprocessing
7、capacitylowerstheworking.Inthispaper,wereportonthedesignofanewvibratingscreenwithvariablemotiontracesthatisbasedontheprincipleofscreeningprocesswithconstantbedthickness[3–4].Differentpartsofthevibratingscreentraversedifferentellipticaltracesandtheresultingmotionagreeswel
8、lwiththeidealmotion.Thusthescreenprocessingcapacityandefficiencycanbothbeimproved.2Idealmotionforascree
