矿物加工毕业设计外文翻译

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1、歩駅珏工大哼ANHUIUNIVERSITYOFSCIENCE&TECHNOLOGY规定阅读的夕卜文资料原文及译文学院（部）：材料科学与工程学院专业班级：矿物加工工程11-2班学号：2011303004学生姓名：王泽阳指导教师：张东晨教授2015年05月27日指导教师评语:评阅人:日期:DynamicsandscreeningcharacteristicsofavibratingscreenwithvariabIeelIipticaItraceHEXiao-mci,LIUChu-shcngAbstract:theidealmotioncharacteristicsforthevibrati

2、ngscreenwaspresented,vibratingscreenwithvariableellipticaltracewasproposed.Anaccuratemechanicalmodelwasconstruetedaccordingtotherequiredstrueturalmotionfcatures.Applyingmulti-degree-of-freedomvibrationtheory,characteristicsofthevibratingscreenwasanalyzed.Kinematicsparametersofthevibratingscreenwh

3、ichmotiontraceswerelinear,circularorellipticalwereobtained.Thestablesolutionsofthedynamicequationsgavethemotionsofthevibratingscreenbymeansofcomputersimulations.Technologicalparametcrs,includingamplitude,movcmentveloeityandthrowingindex,offivespecificpointsalongthescreensurfaceweregainedbytheoret

4、icalcalculation.Theresultsshowthatthetracesofthenewdesignedvibratingscreenfollowtheidealscreeningmotion.Thescreeningefficiencyandprocessingcapacitymaythusbeeffectivelyimproved.Keywords:variableellipticaltrace;screeningprocesswithconstantbedthickness;dynamicmodel;motioncharacteristic;screeningchar

5、acteristics1IntroductionScreeningoperationsareanimportantpartofcoalprocessing.Thevibratingscreenisoneofthemostextensivelyusedscreeningtools.Vibratingscreens,suchaslinearvibratingscreen,circularvibratingscreenorellipticalvibratingscreen,haveasimpletranslationalmotion.Themotionfollowsthesamepatheve

6、rywhereonthescreenandsothescreenhasconstanttransportveloeityandthrowingindex,whichleadstolowscreeningefficiency.Augmentingthethrowingindextoimprovebreakstheexcitingmotorsprocessingcapacitylowerstheworking.Inthispaper,wereportonthedesignofanewvibratingscreenwithvariablemotiontracesthatisbasedonthe

7、principleofscreeningprocesswithconstantbedthickness[3-4].Differentpartsofthevibratingserecntraverscdifferentellipticaltracesandtheresultingmotionagreeswel1withtheidealmotion.Thusthescreenprocessingcapacityandefficiency