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1、双面钻孔卧式组合机床液压系统（Hydraulicsystemofdouble-sidedrillinghorizontalcombinationmachinetool）introScraperhydraulicsystemAcompletehydraulicsystemconsistsoffiveparts,namelypowerelements,actuators,controlelements,auxiliarycomponents(accessories)andhydraulicoil.PowerelementThepowe
2、relementisusedtoconvertthemechanicalenergyoftheoriginalmotiveintothepressureoftheliquid,theoilpumpinthehydraulicsystem,whichprovidesthepowertothewholehydraulicsystem.Thestructureofhydraulicpumpusuallyhasgearpump,vanepumpandplungerpump.actuatorsThefunctionofanactuator(
3、suchasahydrauliccylinderandahydraulicmotor)istoconvertthepressureoftheliquidtomechanicalenergy,drivingtheloadasastraightreciprocatingmovementorrotarymotion.ControlelementThecontrolelement(i.e.varioushydraulicvalves)controlsandregulatesthepressure,flowanddirectionofthe
4、liquidinthehydraulicsystem.Accordingtodifferentcontrolfunctions,hydraulicvalvescanbedividedintopressurecontrolvalves,flowcontrolvalvesanddirectionalcontrolvalves.Pressurecontrolvalveisdividedintooverflowvalve(reliefvalve),pressurereliefvalve,sequencevalve,pressurerela
5、y,etc.Flowcontrolvalveincludesthrottlevalve,adjustingvalve,diversionvalveandsoon;Directionalcontrolvalveincludesone-wayvalve,liquidcontrolone-wayvalve,shuttlevalve,reversingvalve,etc.Accordingtothecontrolmode,hydraulicvalvecanbedividedintoswitchcontrolvalve,fixedvalue
6、controlvalveandproportionalcontrolvalve.AuxiliarycomponentsAuxiliarycomponentsincludefueltank,oilfilter,tubingandpipejoint,sealingring,quickchangejoint,highpressureballvalve,rubbertubeassembly,pressuregaugejoint,pressuregauge,oillevelmeter,oiltemperaturemeter,etc.Theh
7、ydraulicoilHydraulicoilistheworkingmediumforthetransmissionofenergyinthehydraulicsystem,andtherearevariouskindsofmineraloil,emulsifiedliquidandhydraulicoil.ThesystemstructureThehydraulicsystemconsistsoftwoparts:signalcontrolandhydraulicpower.Thesignalcontrolpartisused
8、todrivethecontrolvalvemovementinthehydraulicpowerparts.Thehydraulicpowerpartsarerepresentedbythecircuitdiagramtoshowtheinter
