会员注册 | 登录 | 微信快捷登录 QQ登录 微博登录 | 帮助中心 人人文库renrendoc.com美如初恋!
站内搜索 百度文库

热门搜索: 直缝焊接机 矿井提升机 循环球式转向器图纸 机器人手爪发展史 管道机器人dwg 动平衡试验台设计

   首页 人人文库网 > 资源分类 > DOC文档下载

外文翻译--打包机液压系统的改进.doc

  • 资源星级:
  • 资源大小:28.00KB   全文页数:5页
  • 资源格式: DOC        下载权限:注册会员/VIP会员
您还没有登陆,请先登录。登陆后即可下载此文档。
  合作网站登录: 微信快捷登录 支付宝快捷登录   QQ登录   微博登录
友情提示
2:本站资源不支持迅雷下载,请使用浏览器直接下载(不支持QQ浏览器)
3:本站资源下载后的文档和图纸-无水印,预览文档经过压缩,下载后原文更清晰   

外文翻译--打包机液压系统的改进.doc

HV8052316打包机液压系统的改进摘要文章通过对HV8052316打包机液压系统预压部分的分析,阐述了作者的观点,并对原液压系关键词HV8052316打包机液压系统二通插装阀HV805316打包机针对化纤厂的后处理捆抱作业特点而开发研制的。该设备在使用过程中与其他老型号的打包机比较,由于应用了二通插座装阀控制技术,与传统液压阀相比,具有重量轻、体积小、动作速度快、易于集成等优点,时间节拍、工作效率与可靠性大大提高,颇受用户方的好评。是目前该行业中使用打包设备的主流产品。但也存在一些问题,最主要方面是预压液压系统,预压缸到下限位时保压保不住,预压缸空回升时,预压液压系统压力过高,电机长期过载而烧损。此类情况包括进口设备在使用时也时有发生。本文就此问题对该设备的预压液压控制系统作了一些分析及改进设计。为该机原预压液压系统。预压液压系统泵源采用叶片泵。该回路控制部分采用二通插装阀组,具有限位、卸载、换向功能。它还可以通过对电磁阀的电气控制,控制液压缸快速差动及慢速运动。由于预压缸立式安装,因此在液压缸下腔装有起平衡支承作用的单向平衡阀一般设定为3~5MPa。为了防止由于液压缸卸压而造成的下腔局部真空,在阀组回油路上装有背压单向阀。预压回路某些动作的转换是由压力开关实现的。预压缸开始快速差动下降,当压力达到压力开关设定值8MPa时,预压液压缸快速变慢速继续向下,预压缸到下限位停止下降,卸压后换向返回顶部。预压回路有电气、液压两级压力保护,当压力达到21MPa时,压力开关发信关机停泵或卸载。一旦压力开关失灵,设定到22MPa的溢流阀起安全溢流作用。工况1预压缸快速下降差动。Y12通电,Y15通电,阀CV13控制口由D点压力控制。泵供油经过阀CV14进入液压缸上腔,液压缸下腔油液由于液压缸活塞的面积差,C点压力高于D点压力,阀CV13被强行开启,使液压缸下腔油液流向上腔会同泵供油液实现差动。使预压缸快速下降。工况2预压缸慢速下降。Y12通电,Y13通电,Y15通电。泵供油经过阀CV14进入液压缸上腔,液压缸下腔油液经过单向平衡阀,阀CV12及单向阀回油箱。工况3预压缸保压在压缩下限位时。电磁阀全部断电。工况4预压缸卸压。Y14通电、Y16通电。工况5预压缸回升。Y16通电、Y14通电、Y11通电。泵供油经过CV13阀及单向平衡阀进入液压缸下腔。上腔油液经过CV15阀及单向阀回油箱,由于泵供油流量大,而单向平衡阀通油截面不可能做得很大,因此大流量的油液经过时,节流作用异常显著,压力损失较大。回升时压力接近系统调节压力。经实践与分析,原液压系统存在问题需要改进1CV13、CV14阀组原三位四通电磁阀及梭阀改用球阀及内带梭阀的控制盖板和插件组成新的CV13、CV14阀组,同时CV14原插件面积比1∶115改为1∶2。①预压缸保压时,由于CV14阀插件有较大的面积比,阀关闭速度加快,且使阀芯紧压在阀套上,泄漏情况显著减少,消除了在压缩限位时的反弹现象。HV8052316PreeHydraulicSystemImprovementTheImprovementoftheHydraulicSystemforHV8052316PackingMachineShiSheng2xingAbstractBasedonthehydraulicsystemHV8052316Preesurcharginganalysis,ontheauthorsviewpoint,andthehydraulicsystemKeywordsHV8052316PreehydraulicsystemtwoCartridgeValvesHV805316Preeagainstchemicalfiberbundlepostprocessingplantoperatingcharacteristicsandhavedevelopeda.TheequipmentusedintheprocesswithotheroldmodelsPreecomparison,thetwosocketapplicationsloadedvalvecontroltechnology,ascomparedwithconventionalhydraulicvalveislightweight,smallsize,fastaction,easyintegrationadvantages,TimeRhythms,andtheworkingefficiencyandreliabilityhasgreatlyimproved.popularuserspraise.Theindustryiscurrentlyusedinthepackagingequipmentmainstreamproducts.Buttherearestillsomeproblems,themostimportantaspectisprepressurehydraulicsystem,thePWCtolowerpressurecylinder,packinginfluence,preaircylinderpressurerise,surcharginghighpressurehydraulicsystem,theelectricaloverloadandlongtermburning.Suchsituationsincludetheimportedequipmentinusehavealsooccurredfrequently.Inthispaper,theequipmentontheissueofsurcharginghydrauliccontrolsystemmadesomedesignanalysisandimprovement.Surchargingfortheaircrafthydraulicsystem.Prepressurehydraulicsystempumpsourceisavanepump.ThecircuitcontrolledbytwoCartridgevalveblockwithspacing,unloading,forthefunction.Italsocanbepassedontheelectricalcontrolsolenoidvalvecontrolhydrauliccylinderfastdifferentialandtheslowmovement.Aspreinstalledverticalcylinderpressure,hydrauliccylinderinthecavityunderthesupportingroleofabalancewiththeonewaybalancevalveusuallysetat3to5MPa.Inordertopreventhydrauliccylinderpressurereliefunderthecavitycausedbythepartialvacuumintheoilreturnvalveblocktheroadwithbackpressurevalve.Surchargingloopmovementsofconversionisachievedbythepressureswitch.Prepressuredifferentialcylinderrapiddeclinebegan,whenthepressuretopressureswitchsettings8MPa,thePrepressurehydrauliccylinderrapidchangecontinuestoslowdown,lowerpressurecylindertostopdropandtothepressurereliefBacktotop.Surchargingloopelectrical,hydraulicpressuretoprotecttwo,whenthepressureof21MPa,pressureswitchlettersorunloadingpumpshutdownstopped.Oncethepressureswitchfailure,setto22MPa,thesafetyreliefvalveoverflowfromtherole.Condition1Prepressurecylinderrapiddeclinedifferential.Y12electricity,Y15telecommunicationsservices,controlvalveCV13mouthfromtheDpointpressurecontrol.AfterpumpingoilintothecylindervalveCV14superiorvenacava,inferiorvenaOilhydrauliccylinderhydrauliccylinderpistonduetothesizedifference,CpointshigherthantheDpointpressure,pressure,valveCV13wereforciblyopened,thehydrauliccylinderinferiorvenaOilflowsonthecavitywiththepumpforoiltoachievedifferential.Prepressurecylindertorapiddecline.Condition2Prepressurecylinderslowdecline.Y12telecommunicationsservices,electricityY13,Y15electricity.AfterpumpingoilintothecylindervalveCV14superiorvenacava,inferiorvenaOilhydrauliccylinderbalancevalvethroughaoneway,onewayvalvesandvalveCV12backtothefueltank.Case3Prepressurecylinderpressureinthelowercompression.Solenoidallpower.Condition4Prepressurecylinderpressurerelief.Y14electricity,Y16electricity.Condition5Prepressurecylinderrebound.Y16telecommunicationsservices,electricityY14,Y11electricity.CV13pumpoilthroughaonewayvalveandbalancevalve,hydrauliccylinderintotheinferiorvenacava.AfterCV15cavityontheoilvalveandcheckvalvetothefueltank,oilpumpflow,andonewaybalancevalvecannotdomuchoilsection,alargeflowofoil,theroleofabnormalexpendituresignificantly,greaterpressureloss.Pressureontherecoveryofnearlypressureregulationsystem.Afterpracticeandanalysis,theoriginalhydraulicsystemproblemneedstobeimproved1CV13,CV14valveblocktheoriginalthreeandfourwaysolenoidvalvespindleballvalveandvalveswitchingtotheshuttlewiththecontrolvalvecoverandtheformationofanewpluginCV13,CV14valveblock,CV14originalplugarearatio1115to12.①surchargingpressurecylinder,valvepluginsbecauseCV14greaterthanthesizeofthevalveclosurespeed,andpressedintothespoolvalveput,leakagesignificantlyreduced,eliminatedinthereboundcompressionLimitphenomenon.HydraulicandPneumatic2004section12

注意事项

本文(外文翻译--打包机液压系统的改进.doc)为本站会员(英文资料库)主动上传,人人文库网仅提供信息存储空间,仅对用户上传内容的表现方式做保护处理,对上载内容本身不做任何修改或编辑。 若此文所含内容侵犯了您的版权或隐私,请立即通知人人文库网(发送邮件至[email protected]或直接QQ联系客服),我们立即给予删除!

温馨提示:如果因为网速或其他原因下载失败请重新下载,重复下载不扣分。

[email protected] 2015-2017 人人文库网网站版权所有
苏ICP备12009002号-5