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外文翻译--液压泵.doc

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外文翻译--液压泵.doc

中国矿业大学2008届本科生毕业设计第1页翻译部分英文原文HYDRAULICPUMPABSTRACTAHYDRAULICPUMPUNITISENCASEDBETWEENAPUMPBODYANDAPUMPCOVERABEARINGHOLEPASSESTHROUGHTHEPUMPBODYANDISFORMEDINTHEPUMPBODYADRIVESHAFTANDABEARINGBUSHAREINSERTEDINTOTHEBEARINGHOLETHEDRIVESHAFTDRIVESTHEHYDRAULICPUMPUNITANDTHEBEARINGBUSHSUPPORTSTHEDRIVESHAFTATANENDPORTIONOFTHEBEARINGHOLE,ASEALCHAMBERISFORMEDTHESEALCHAMBERENCASESASEALMEMBERANOILGROOVEISFORMEDINSIDETHEBEARINGHOLETHEOILGROOVECONNECTSTHEHYDRAULICPUMPUNITSIDEWITHTHESEALCHAMBERANDCARRIESHYDRAULICOILFORLUBRICATIONTHEOILGROOVEISFORMEDINSUCHAMANNERTHATASECTIONALAREAINTHESEALCHAMBERSIDEISGREATERTHANASECTIONALAREAINTHEHYDRAULICPUMPUNITSIDETHEBEARINGBUSHCOMPRISESAPLURALITYOFBUSHPIECESARRANGEDATAPREDETERMINEDINTERVALINANAXIALDIRECTIONOFTHEBEARINGHOLESUMMARYOFTHEINVENTIONTHEFOLLOWINGISANEXPLANATIONOFONEEMBODIMENTAPPLIEDTOAHYDRAULICPUMPOFAPOWERSTEERINGOFTHEPRESENTINVENTIONWITHREFERENCETOTHEDRAWINGS中国矿业大学2008届本科生毕业设计第2页INTHEDRAWINGS,AREFERENCENUMERAL1DENOTESAPUMPBODYMADEOFMETALLICMATERIALSSUCHASALUMINUMALLOYANDSOONANDAREFERENCENUMERAL2DENOTESAPUMPCOVERMADEOFMETALLICMATERIALSTHEPUMPBODY1ANDTHEPUMPCOVER2ENCASEAHYDRAULICPUMPUNIT3THATIS,ANANNULARCONCAVEPORTION4ISFORMEDBETWEENTHEPUMPBODY1ANDTHEPUMPCOVER2THEHYDRAULICPUMPUNIT3ISINSTALLEDINTHEANNULARCONCAVEPORTION4INTHISEMBODIMENT,THEHYDRAULICPUMPUNIT3ISAVANEHYDRAULICPUMPUNITTHEHYDRAULICPUMPUNIT3INCLUDESACAMRING7ENCASINGAROTOR6THEROTOR6COMPRISESAPLURALITYOFVANES5WHICHARERADIALLYMOVABLEINANDOUTBOTHSIDESOFTHECAMRING7AREGUIDEDBYSIDEPLATES8AND9APUMPINGCHAMBER10ISFORMEDBYTWOADJACENTONEOFTHEVANES5BETWEENTHECAMRING7ANDTHEROTOR6THEVOLUMEOFTHEPUMPINGCHAMBER10VARIESBYTHEROTATIONOFTHEROTOR6WITHTHISVARIATION,ANINHALINGZONEISFORMEDINAPORTIONINCREASINGINVOLUMEANDADISCHARGINGZONEISFORMEDINAPORTIONDECREASINGINVOLUMENOTCHPASSAGES8AAND8BAREFORMEDINTHESIDEPLATES8AND9THESIDEPLATES8AND9FACETHEDISCHARGINGZONETHENOTCHPASSAGES8AAND9AOPENRADIALLYANDOUTWARDLYTHEOILDISCHARGEDFROMTHEPUMPISDISCHARGEDINTOADISCHARGINGCHAMBERAHIGHPRESSURECHAMBER11OFTHEANNULARCONCAVEPORTION4OFTHEOUTERCIRCUMFERENCEOFTHECAMRING7ANINHALINGPORTNOTSHOWNINTHEDRAWINGISFORMEDINTHESIDEPLATE9FACINGTHEINHALINGZONEANDPASSESTHERETHROUGHABEARINGHOLE12ISFORMEDINTHEPUMPBODY1ANDPASSESTHROUGHTHEPUMPBODY1ASEALCHAMBER13ISFORMEDINANENDPORTIONOFTHEBEARINGHOLE12ANOILGROOVE14COMMUNICATINGFROMTHEHYDRAULICPUMPUNIT3SIDETOTHESEALCHAMBER13ISFORMEDINTHEBEARINGHOLE12THESECTIONOFTHEOILGROOVE14ISACIRCULARARCTHESECTIONALAREAOFTHEOILGROOVE14INTHESEALCHAMBER13SIDEISGREATERTHANTHESECTIONALAREAOFTHEOILGROOVE14INTHEHYDRAULICPUMPUNIT3SIDEANDITISEASYTOFORMTHEOILGROOVE14INACASTINGMOLDTHEOILGROOVE14INTHISEMBODIMENTISDIVIDEDATASUBSTANTIALLYCENTERPOSITIONOFTHEBEARINGHOLE12HOWEVER,BECAUSETHESUBSTANTIALLYCENTERPOSITIONOFTHEBEARINGHOLE12ISPOSITIONEDBETWEENAPLURALITYOFBUSHPIECESLATERMENTIONED,THESUBSTANTIALLYCENTERPOSITIONOFTHEBEARINGHOLE12ISSUBSTANTIALLYCOMMUNICATEDWITHANINTERVALBETWEENTHEBUSHPIECESBECAUSETHEOILGROOVE14ISDIVIDEDATTHESUBSTANTIALLYCENTERPOSITIONOFTHEBEARINGHOLE12,THISDIVIDEDPARTBECOMESASOCALLEDLABYRINTHANDAFLOWRESISTANCEISAPPLIEDTOHYDRAULICOILFLOWINGINTHEOILGROOVE14THEREFORE,ITISPOSSIBLETODECREASETHEENERGYOFTHEHYDRAULICOILFLOWINGINTOTHESEALCHAMBER13THEOILGROOVE14CANBECONTINUOUSLYFORMEDWITHOUTDIVIDINGATTHESUBSTANTIALLYCENTERPOSITIONOFTHEBEARINGHOLE12THEOILGROOVE14CANBECONTINUOUSLYFORMEDINATAPERSHAPESOTHATTHESECTIONALAREAINCREASESGRADUALLYFROMTHEHYDRAULICPUMPUNIT3SIDETOTHESEALCHAMBER13SIDEWITHTHISSTRUCTURE,THEOILGROOVE14CANLEADTHELEAKAGEOILFROMTHEBEARINGHOLE12OFTHEHYDRAULICPUMPUNIT3TOTHESEALCHAMBER13THELEAKAGEOILFROMTHEHYDRAULICPUMPUNIT3ISTHEHYDRAULICOILLEAKINGBETWEENTHEROTOR6ANDTHESIDEPLATES8AND9ANDISALITTLE中国矿业大学2008届本科生毕业设计第3页HYDRAULICOILLEAKINGFROMTHEJOINTBETWEENTHEPUMPBODY1ANDTHESIDEPLATE9ANINHALINGPASSAGE15,ADISCHARGINGPASSAGE16ANDASPOOLVALVERECEIVINGBORE17AREFORMEDINTHEPUMPBODY1THEINHALINGPASSAGE15CONNECTSEACHPUMPINGCHAMBER10OFTHEINHALINGZONEWITHASTORAGETANKNOTSHOWNINTHEDRAWINGTHEDISCHARGINGPASSAGE16CONNECTSEACHPUMPINGCHAMBER10OFTHEDISCHARGINGZONEWITHTHEACTUATOROFTHEPOWERSTEERINGNOTSHOWNINTHEDRAWINGONEENDOFTHESPOOLVALVERECEIVINGBORE17ISSEALEDTHEINHALINGPASSAGE15ISBRANCHEDINTOTWODIRECTIONSATTHEJOINTFACINGTHESIDEPLATE9ATTHEENDPORTIONOFTHEINHALINGPASSAGE15,ACIRCULARARCSHAPEINHALINGPORT18ISFORMEDTHEINHALINGPORT18ISFORMEDSOTHATTHEINHALINGPORT18FACESTHEINHALINGPORT,NOTSHOWNINTHEDRAWING,FORMEDINTHESIDEPLATE9THEINHALINGPASSAGE15ISCONNECTEDWITHTHESEALCHAMBER13THROUGHALOWPRESSUREPASSAGE19THELOWPRESSUREPASSAGE19ISSUBSTANTIALLYPARALLELWITHTHEBEARINGHOLE12THEDISCHARGINGPASSAGE16ISBENTRADIALLYANDOUTWARDLYATTHEJOINTFACINGTHESIDEPLATE9ANORIFICEPASSAGE21CONNECTEDWITHANINHALINGPORT20FORMEDINTHESIDEPLATE9ISFORMEDINTHEDISCHARGINGPASSAGE16AREFERENCENUMERAL22DENOTESABEARINGBUSHINSERTEDINTOTHEBEARINGHOLE12THEBEARINGBUSH22COMPRISESAPLURALITYOFBUSHPIECES23POSITIONEDATAPREDETERMINEDINTERVALINTHEAXIALDIRECTIONOFTHEBEARINGHOLE12INTHISEMBODIMENT,THEBEARINGBUSH22COMPRISESTWOBUSHPIECES23POSITIONEDATTHEINTERVAL1INTHEAXIALDIRECTIONOFTHEBEARINGHOLE12THEBUSHPIECE23ISFORMEDINTOACYLINDRICALSHAPEBYROUNDINGAPLATEMEMBERTHEINNERSURFACEOFTHEBEARINGBUSH22ISSMOOTHTHEOILGROOVEISNOTFORMEDINTHEBEARINGBUSH22THEINTERVAL1BETWEENTHETWOBUSHPIECES23FORMINGTHEBEARINGBUSH22ISPREFERABLETOBESUBSTANTIALLY1/3OFTHEAXIALLENGTHLOFTHEBEARINGBUSH22INORDERTOSECURETHEAREAFORSUPPORTINGTHEBEARINGBUSH22INTHISEMBODIMENT,THEINTERVAL1BETWEENTHEBUSHPIECES23ISSUBSTANTIALLY1/5OFTHEAXIALLENGTHLOFTHEBEARINGBUSH22AREFERENCENUMERAL25DENOTESADRIVESHAFTFORDRIVINGTHEHYDRAULICPUMPUNIT3THEDRIVESHAFT25ISINSERTEDINTOTHEBEARINGHOLE12INSUCHAMANNERTHATTHEDRIVESHAFT25ISSUPPORTEDBYTHEBEARINGBUSH22THEDRIVESHAFT25HASSERRATIONS26FORMEDNEARTHEFORWARDENDTHESERRATIONS26PASSTHROUGHTHETHROUGHHOLE9BOFTHESIDEPLATE9ANDAREFITTEDINTHESERRATIONHOLE27OFTHEROTOR6WITHTHIS,THEDRIVESHAFT25ISCAPABLEOFDRIVINGTHEROTOR6OFTHEHYDRAULICPUMPUNIT3THEFORWARDENDPORTIONOFTHEDRIVESHAFT25ISTAPEREDANDLOOSELYFITTEDINTHETHROUGHHOLE8BOFTHESIDEPLATE8ASPOOLVALVE30CONTROLLINGTHEQUANTITYOFTHEOILISSLIDABLYMOVABLEANDISFITTEDINTHESPOOLVALVERECEIVINGBORE17THESPOOLVALVE30DIVIDESTHEINSIDEOFTHESPOOLVALVERECEIVINGBORE17INTOAFIRSTPRESSURECHAMBER17AANDASECONDPRESSURECHAMBER17BTHESPOOLVALVE30ISNORMALLYBIASEDTOWARDTHEFIRSTPRESSURECHAMBER17ASIDEBYASPRINGFORCEOFACONTROLSPRING31THECONTROLSPRING31ISENCASEDINTHESECONDPRESSURECHAMBER17BTHESPOOLVALVE30CLOSESADRAINPASSAGE33CONNECTINGTHEINHALINGPASSAGE15INANORMALCONDITION中国矿业大学2008届本科生毕业设计第4页INTHEPUMPBODY1,APASSAGE35ISFORMEDTHEPASSAGE35ISCONNECTEDWITHADISCHARGINGLOTNOTSHOWNINTHEDRAWINGINORDERTOCONNECTWITHTHEDISCHARGINGPASSAGE16ANDTOLEADHYDRAULICOILTOTHEPOWERSTEERING,THATIS,THEACTUATORNOTSHOWNINTHEDRAWINGTHEPASSAGE35ISCONNECTEDWITHTHESECONDPRESSURECHAMBER17BTHROUGHAPASSAGE36THEPRESSUREINTHEDISCHARGINGPASSAGE16ISLEDINTOTHESECONDPRESSURECHAMBER17BAREFERENCENUMERAL39DENOTESAPRESSURESWITCHMOUNTEDONTHEPUMPCOVER2THEPRESSURESWITCH39COMPRISESAFIXEDCONTACT39AANDAMOVINGCONTACT39BTHEPRESSURESWITCH39ISABLETOOPERATEACCORDINGTOTHEPRESSUREOFTHEDISCHARGINGCHAMBER11BECAUSETHEENDPORTIONOFTHEMOVINGCONTACT39BFACESAPASSAGE40CONNECTINGWITHTHEDISCHARGINGCHAMBER11THEPRESSURESWITCH39ISTHRUSTINTOANDFIXEDINTHEINSIDEOFACONCAVEPORTION41THEINSIDEOFTHECONCAVEPORTION41ISCONNECTEDWITHTHETHROUGHHOLE9BOFTHESIDEPLATE9THROUGHARADIALPASSAGE42ANDANAXIALPASSAGE43THEPUMPBODY1ANDTHEPUMPCOVER2ARECONNECTEDANDFIXEDWITHEACHOTHERBYBOLTSNOTSHOWNINTHEDRAWINGTHEJOINTBETWEENTHEPUMPBODY1ANDTHEPUMPCOVER2ISSEALEDBYASEALRING44SOASTOPREVENTTHEHYDRAULICOILDISCHARGEDINTOTHEDISCHARGINGCHAMBER11FROMLEAKINGTOTHEOUTSIDEAREFERENCENUMERAL45DENOTESASEALRINGINSTALLEDBETWEENTHEPUMPCOVER2ANDTHESIDEPLATE8THESEALRING45SEPARATESTHEDISCHARGINGCHAMBER11FROMTHETHROUGHHOLE8BOFTHESIDEPLATE8AREFERENCENUMERAL46DENOTESASEALMEMBERTHESEALMEMBER46ISINSTALLEDINTHESEALCHAMBER13ANDSEALSTHEDRIVESHAFT25WITHTHISSTRUCTURE,THEDRIVESHAFT25ISROTATIONALLYDRIVENTHROUGHTHEPULLEYNOTSHOWNINTHEDRAWINGANDTHEROTOR6CONNECTEDWITHTHEDRIVESHAFT25ISROTATIONALLYDRIVENWHENTHEROTOR6ISROTATIONALLYDRIVEN,WITHTHEROTATIONOFTHEROTOR6,THEVOLUMEOFTHEINHALINGZONEINCREASESANDTHEVOLUMEOFTHEDISCHARGINGZONEDECREASESHYDRAULICOILISINHALEDFROMTHEINHALINGPASSAGE15THROUGHTHEINHALINGPORT18INTOTHEPUMPINGCHAMBER10INTHEINHALINGZONE,PASSESTHROUGHTHEPUMPANDISDISCHARGEDFROMTHEPUMPINGCHAMBER10INTHEDISCHARGINGZONEINTOTHEDISCHARGINGCHAMBER11THEHYDRAULICOILDISCHARGEDINTOTHEDISCHARGINGCHAMBER11ISLEDTOTHEFIRSTPRESSURECHAMBER17ATHROUGHTHELEADINGPASSAGE34THEHYDRAULICOILLEDINTOTHEFIRSTPRESSURECHAMBER17AISLEDINTOTHEACTUATOROFTHEPOWERSTEERINGNOTSHOWNINTHEDRAWINGTHROUGHTHEORIFICEPASSAGE21,THEDISCHARGINGPASSAGE16ANDTHEPASSAGE35INANORMALCONDITION,THESPOOLVALVE30ISURGEDTOWARDTHEFIRSTPRESSURECHAMBER17ASIDEBYTHECONTROLSPRING31ANDCLOSESTHEDRAINPASSAGE33BYTHELANDPORTION32OFTHEMAINBODYOFTHESPOOLVALVE30ALLOFTHEDISCHARGEDOILLEDINTOTHEFIRSTPRESSURECHAMBER17AISLEDINTOTHEACTUATORNOTSHOWNINTHEDRAWINGTHROUGHTHEORIFICEPASSAGE21WHENTHEROTATIONALSPEEDOFTHEPUMPINCREASES,THEQUANTITYOFTHEOILDISCHARGEDFROMTHEPUMPINCREASESANDTHEQUANTITYOFTHEOILDISCHARGEDFROMTHEPUMPLEDINTOTHEFIRSTPRESSURECHAMBER17AINCREASES,THEHYDRAULICOILINTHEFIRSTPRESSURECHAMBER17AISLEDINTOTHEDISCHARGINGPASSAGE16UNDERTHELIMITATIONOFFLOWBYTHEORIFICEPASSAGE21,THESPOOLVALVE30MOVESRIGHTWARDANDCOMPRESSESTHECONTROLSPRING31TOAPREDETERMINEDLENGTH

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