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1、第IV頁遼寧科技大學本科生畢業(yè)設(shè)計PX1200/250旋回破碎機設(shè)計摘要新中國成立以來，隨著采礦業(yè)的發(fā)展，選礦機械經(jīng)歷了從無到有、從小到大、從單個品種和規(guī)格到多個品種和規(guī)格的發(fā)展過程，各種選礦機械產(chǎn)品已經(jīng)形成了系列，現(xiàn)在生產(chǎn)的各種形式和規(guī)格的破碎機、磨礦機和選礦機械，基本上能滿足國民經(jīng)濟建設(shè)的需求，同時，在液壓破碎機、反擊式破碎機、離心選礦機等新產(chǎn)品的研制和新技術(shù)的應用方面都取得了一定的成就，但是，根據(jù)我國礦藏資源的特點（貧礦多、共生礦物多),選別的機械品種還不能完全滿足新的選礦工藝的需要，特別需要發(fā)
2、展一些適于對難選物的選別機械。旋回破碎機是利用破碎錐在殼體內(nèi)腔中的旋回運動，對物料產(chǎn)生擠壓和彎曲作用，粗碎各種硬度的礦石或巖石的大型破碎機械，裝有破碎錐的主軸的上端支承在橫梁中部的襯套內(nèi)，其下端則置于軸套的偏心套中，軸套轉(zhuǎn)動時，破碎錐繞機器中心線作偏心旋回運動，他的破碎動作是連續(xù)的，故工作效率高于顎式破碎機，旋回破碎機的工作是連續(xù)的，它與其他破碎機相比其優(yōu)點是生產(chǎn)能力大，工作平穩(wěn)，破碎單位重量礦石的耗量少，產(chǎn)品粒度比較均勻。關(guān)鍵詞：旋回破碎機；破碎；破碎錐全套圖紙，加第IV頁遼寧科技大學本科生畢業(yè)設(shè)計
3、ThedesignofPX1200/250gyratorycrusherAbstractSincenewChinahadbeenestablished,alongwiththeminingindustrydevelopment,thedressingmachineryexperiencedhasgrownoutofnothing,forminfancytomaturity,fromthesinglevarietyandthespecificationtomanyvarietiesandthespeci
4、ficationdevelopingprocess.Eachkindofdressingmechanicalproducthavealreadyformedtheseries.Noweachkindofpatternandspecificationbreaker，theoremailandclassificationmachinery,basicallycansatisfytheneedofthenationaleconomyconstruction,meanwhile,inthehydraulicp
5、ressurebreaker,thecounter-attacktypebreaker,thecentrifugalconcentratorandsoon,thenewproductdevelopmentandthenewtechnicalapplicationaspecthaveyieldedthecertainresult.However,accordingtoourcountrymineralresourcecharacteristic(Theleanorearemanyassociatedmi
6、neralaremany),classifiesthemachinerythevarietynottobeablecompletelytosatisfythenewdressingcrafttheneed,particularlyneedstodevelopsometobesuitableforthedifficultelectingclassificationmachinery.Thegyratorycrusheristhecuringfunction,thickgarrulouseachkindo
7、fdegreeofhardnessoratorrocklarge-scalebrokenmachinerywhichisloadedwiththebrokenawlthemainaxleupperextremesupportinginthecrossbeambushing,itslowerextremitysetstotheaxlesleevecenter.Whentheaxlesleeverotates,thebrokenawlcirclesinthemachinethecoretomaketheb
8、iasedcyclemovementitsbrokenmovementiscontinuouslycarrieson,hencetheworkingefficiencyishigherthanthejawtypebreaker.Thegyratorycrusherbrokenworkiscontinual,itcompareswithotherbreakers,itsmeritisthehighproductivity,worksteady,fewcru
