铂莱娱乐场

铂莱娱乐场I.Analysisandtroubleshootingofcommonfaultsinhydraulicpumps

a,failurephenomenon:nooil,insufficientinfusion,pressuredoesnotgo

铂莱娱乐场Faultanalysis:1.Themotorisnotturningright,2.Thesuctionpipeorfilterisclogged,3.Theaxialclearanceorradialclearanceistoolarge,4.Theconnectionisleaking,mixedwithair,5.Themediumviscosityistoohighorthetemperatureriseistoohigh..

铂莱娱乐场Remedy:1.Checkthemotorsteering,2.Unblockthepipeline,cleanthefilter,replacethenewworkingmedium,3.Checkandreplacetherelevantparts,4.Tightenthescrewsateachjointtoavoidleakage,andpreventairfromentering,5.CorrectUseworkingmediumtocontroltemperaturerise.

铂莱娱乐场b, failure phenomenon: noise, severe pressure fluctuations

Fault analysis: 1. The suction pipe and filter are blocked or the filter capacity is small. 2. The air suction pipe seal leaks or there is air bubble in the medium. 3. The pump is not concentric with the coupling, 4. The oil level is low, 5. Oil Low temperature or high viscosity, 6. Pump bearing damage.

铂莱娱乐场Remedy: 1. Clean the filter to make the suction pipe unobstructed, and select the filter correctly. 2. Add some oil to the joint or seal. If the noise is reduced, tighten the joint or replace the seal; the return pipe should be in the oil. Below, there must be a certain distance from the oil suction pipe, 3. Adjust the concentricity, 4. Refueling liquid, 5. Heat the oil to the appropriate temperature, 6. Check (hand touch) the temperature rise of the pump bearing part.

c,failurephenomenon:pumpshaftoilsealleakage

Faultanalysis:Theliquidleakageoftheoilleakagepipelineistoolarge,sothatthepressureinsidethepumpbodyrisestoexceedtheallowablepressurevalueoftheoilseal.

铂莱娱乐场Remedy:Checkifthedrainportonthepumpbodyoftheplungerpumpisconnectedtothetankdirectlywithaseparateoilpipe.Ifitisfoundthattheleakageoilpipesofseveralplungerpumpsareconnectedinparalleltoacommonpipeofthesamediameterandthenconnectedtothefueltank,orthedrainpipeofthepistonpumpisconnectedtothereturnpipe,itshouldbecorrected.Itisbesttoconnectapressuregaugetothepumpleakporttocheckthepressureinsidethepump,whichshouldbelessthan0.08Mpa.

Second,thefailureanalysisandtroubleshootingofthereliefvalve

铂莱娱乐场a,failurephenomenon:pressurefluctuations

Faultanalysis:1.Thespringisbentortoosoft,2.Theconevalveisinpoorcontactwiththevalveseat,3.Thesteelballandthevalveseatareinpoorcontact,4.Theslidingvalveisdeformedorpulled,5.Theoilisnotclean,andthedampingholeisblocked.

铂莱娱乐场Remedy:1.Replacethespring,2.Iftheconevalveisnew,removetheadjustingnutandpushtheguiderodafewtimestomakeitcontactwell;orreplacetheconevalve,3.Checktheroundnessofthesteelball,replacethesteelball,grindingthevalveseat,4.replacingorrepairingtheslidevalve,5.dredgingtheorificeandreplacingthecleaningfluid.

铂莱娱乐场b,failurephenomenon:adjustmentisinvalid

Faultanalysis:1.Thespringisbrokenormissing,2.Thedampingholeisblocked,3.Theslidingvalveisstuck,4.Theinletandoutletportsarereversed,and5.Theconevalveismissing.

Remedy:1.Check,replaceorreplenishthespring,2.Unblocktheorifice,3.Remove,inspect,trim,4.Checkthedirectionoftheoilsource,5.Checkandrefill.

c,failurephenomenon:seriousleakage

Faultanalysis:1.Thecontactbetweentheconevalveorthesteelballandthevalveseatispoor,2.Theclearancebetweentheslidevalveandthevalvebodyistoolarge,3.Thepipejointisnottightened,4.Thesealisbroken.

Remedy:1.Replacethenewconevalveorsteelballwhentheconevalveorsteelballisworn.2.Checkthegapbetweenthevalvecoreandthevalvebody.3.Tightenthecouplingscrew.4.Checkandreplacetheseal.

铂莱娱乐场d,faultphenomenon:noiseandvibration

铂莱娱乐场Faultanalysis:1.Thenutisloose,2.Thespringisdeformed,itisnotrestored,3.Thespoolvalveistootight,4.Themainspoolvalveisnotworkingwell,5.Theconevalveisworn,6.Thereisairintheoilpassage,7.Theflowrateexceedstheallowablevalue,8.Resonancewithothervalves.

Remedy:1.Tightenthenut,2.Checkandreplacethespring,3.Repairtheslidevalvetomakeitflexible,4.Checktheconcentricityoftheslidevalveandthehousing,5.Changetheconevalve.

Third,thefailureanalysisandtroubleshootingofthepressurereducingvalve

a.Faultphenomenon:unstablepressurefluctuation

Faultanalysis:1.Airismixedintotheoil.2.Theorificeissometimesblocked.3.Theroundnessofthespoolandthevalvebodyexceedsthespecifiedvalue,sothatthevalveisstuck.4.Thespringisdeformedorstuckinthespool.Thevalveisdifficulttomoveorthespringistoosoft.5.Thesteelballisnotround,thesteelballisnotwellmatchedwiththevalveseatortheconevalveisnotinstalledcorrectly.

Remedy:1.Eliminateairinoil,2.Cleanthedampinghole,3.Repairthevalveholeandslidevalve,4.Replacethespring,5.Replacethesteelballordisassembletheconevalvetoadjust.

铂莱娱乐场b,failurephenomenon:secondarypressureriseisnothigh

Faultanalysis:1,externalleakage,2,poorcontactbetweentheconevalveandthevalveseat.

铂莱娱乐场Remedy:1.Replacetheseals,tightenthescrews,andensurethetorqueiseven,2,repairorreplace.

c,failurephenomenon:nodecompression

Faultanalysis:1.Thedrainportisunreachable;thedrainpipeisconnectedtotheoilreturnpipeandhastheoilreturnpressure.2.Themainspoolisstuckinthefullyopenposition.

Remedy:1.Thedrainpipemustbeseparatedfromtheoilreturnpipeandreturnedtothefueltankseparately.2.Repairandreplacethepartsandchecktheoilquality.

铂莱娱乐场Fourth,thefailureanalysisandtroubleshootingmethodofthrottlespeedcontrolvalve

a,failurephenomenon:throttlingeffectfailureandspeedregulationrangeisnotlarge

铂莱娱乐场Faultanalysis:1.Thegapbetweenthethrottlevalveandtheholeistoolarge,thereisleakageandinternalleakageofthesystem,2.Theorificeisblockedorthespoolisstuck.

铂莱娱乐场Remedy:1.Checkthedamageofthepartsintheleakingpart,repairandupdateit,payattentiontotheoilsealofthejoint.

2.Disassemblethecleaningandreplacethenewoiltomakethespoolmoveflexibly.

b,failurephenomenon:themovementspeedisunstable,suchasgraduallyslowingdown,suddenlyincreasingandbeating

Faultanalysis:1.Theimpuritiesintheoiladheretotheedgeofthethrottle,thecrosssectionoftheoilisreduced,sothatthespeedissloweddown,2.Theperformanceofthethrottlevalveispoor,andtheadjustmentpositionischangedduetovibrationduringlowspeedmovement.Internalandexternalleakageofthethrottlevalve.4.Inthesimplifiedthrottlevalve,thespeedchangessuddenlyduetochangesinthesystemload.5.Theoiltemperaturerises,theviscosityoftheoildecreases,andthespeedisgraduallyincreased.6.DampingThedeviceisclogged,thereisairinthesystem,andpressurechangesandjittersoccur.

铂莱娱乐场Remedy:1.Disassembleandcleantherelevantparts,replacethenewoil,andkeeptheoilclean.2.Increasethethrottleinterlockingdevice.3.Checktheaccuracyandmatchingclearanceoftheparts.Repairorreplacethepartsthatareoutoftolerance.Itisnecessarytostrictlyclose,4.Checkthefunctionofthesystempressureanddecompressiondeviceandthecontrolofthereliefvalve.5.Afterthehydraulicsystemisstable,adjustthethrottlevalveorincreasetheoiltemperatureandheatdissipationdevice.6.Cleantheparts.Anexhaustvalveisaddedtothesystemtokeeptheoilclean.

铂莱娱乐场V.Faultanalysisandeliminationofthereversingvalve

a,faultphenomenon:thespooldoesnotreverse

铂莱娱乐场Faultanalysis:1,theslidevalveisstuck,2,thevalvebodyisdeformed,3,thecenteringspringwiththeintermediatepositionisbroken,4,theoperatingpressureisnotenough,5,theelectromagnetcoilisburntoutortheelectromagnetisinsufficientlythrust,6,theelectriccircuitFailure,7,thehydrauliccontrolvalvetocontroltheoilcircuitisoil-freeorblocked

Remedy:1.Disassembleandcleanthedirtanddeburr.2.Adjustthevalvebodytoinstallthescrewtomakethepressuretight,evenlyorrepairthevalvehole.3.Replacethespring.4.Theoperatingpressuremustbegreaterthan0.35Mpa.5.Check.,repair,replacement,6,eliminatethefault,7,checkthereasonsandeliminate.

b.Faultphenomenon:thereisasoundwhenthedirectionalvalvecontrolledbytheelectromagnetacts

Faultanalysis:1.Theslidevalveisstuckorthefrictionistoolarge.2.Theelectromagnetcannotbepressedtothebottom.3.Thecontactsurfaceoftheelectromagnetcoreisnotflatorthecontactispoor.

Remedy:1.Repairoradjusttheslidevalve,2.Correcttheheightoftheelectromagnet,3.Eliminatedirtandcorrecttheelectromagnetcore.

6.Faultanalysisandeliminationofhydrauliccontrolcheckvalve

铂莱娱乐场a,failurephenomenon:oildoesnotflowbackwards

铂莱娱乐场Faultanalysis:1.Thecontrolpressureistoolow.2.Theoilleakageofthecontroloilpipejointisserious.3.Thecheckvalveisstuck.

Remedy:1.Increasethecontrolpressuretoachievetherequiredvalue.2.Fastenthejointtoeliminateoilleakage.3.Clean.

铂莱娱乐场b,failurephenomenon:nosealinginthereversedirection,thereisleakage

铂莱娱乐场Faultanalysis:1.Thecheckvalveisstuckinthefullyopenposition.2.Thecontactsurfaceofthecheckvalveisnotuniformwiththeconesurfaceofthevalveseat.

铂莱娱乐场Remedy:1,repair,cleaning,2,repairorreplacement.

Seven,theoiltemperatureistoohighfailureanalysisandtroubleshooting

铂莱娱乐场a,faultphenomenon:whenthesystemdoesnotneedpressureoil,andtheoilstilloverflowstothetankunderthesetpressureofthereliefvalve

Faultanalysis:Pooroperationoftheunloadingcircuit.

Remedy:Checktheoperationoftheelectricalcircuit,solenoidvalve,pilotcircuitandunloadingvalve.

铂莱娱乐场b,failurephenomenon:theselectionofhydrauliccomponentsisunreasonable

Faultanalysis:1,thevalvesizeistoosmall,theenergylossistoolarge,2,whenthepumpisselected,thepumpflowistoolarge.

Exclusionmethod:1.Accordingtotheworkingpressureofthesystemandthemaximumflowratethroughthevalve,2.Selectthepumpreasonably.

铂莱娱乐场c,failurephenomenon:insufficientcooling

铂莱娱乐场Faultanalysis:1.Thecoolingwatersupplyisoutoforderorthefanisoutoforder.2.Thereisprecipitationinthecoolingwaterpipeline.

Remedy:1,eliminatethefault,2,eliminateprecipitation.

铂莱娱乐场d,failurephenomenon:insufficientheatdissipation

铂莱娱乐场Faultanalysis:Theheatdissipationareaofthefueltankisinsufficient.

Remedy:Refitthecoolingsystemorincreasethetankcapacityandheatdissipationarea.

e,failurephenomenon:hydraulicpumpoverheating

Faultanalysis:1.Powerlossduetowear,2.Workwithoilwithtoolowortoohighviscosity.

Remedy:1,repairorreplace,2,selecttheoilsuitablefortheviscosityofthesystem.

f,failurephenomenon:oilcirculationistoofast

Faultanalysis:Theliquidlevelinthetankistoolow.

Remedy:Addtheoiltotherecommendedlocation.

铂莱娱乐场g,failurephenomenon:excessiveresistanceofoil

Failureanalysis:Theinsidediameterofthepipeisnotcompatiblewiththerequiredflowrateorbecausetheinnerdiameterofthevalveisnotlargeenough.

铂莱娱乐场Remedy:Installpipesandvalvesofappropriatesizeorreducepower.

Eight,hydrauliccylindercommonfaultanalysisandtroubleshooting

铂莱娱乐场a,failurephenomenon:crawling

Faultanalysis:1,airintrusion,2,hydrauliccylinderendcapsealringistootightortooloose,3,pistonrodandpistonarenotthesame,4,thepistonrodfulllengthorpartialbending,5,hydrauliccylinderinstallationpositionOffset,6,thehydrauliccylinderboreisnotlinear(drumtaper,etc.),7,thecylindercorrosion,pulling,8,thedoublepistonrodnutistootight,makingitconcentric.

铂莱娱乐场Exclusionmethod:1.Addexhaustdevice;ifthereisnoexhaustdevice,thehydraulicsystemcanbestartedtomaketheworkingpartmovequicklywithmaximumstroke,forciblyremovetheair.2.Adjustthesealingringsothatitisnottightandthepistonrodcanbeensured.Pullbacksmoothlybyhandwithoutleakage(mostlyallowasmallamountofoilseepage),3,correcttheconcentricityofthetwo,4,straightenthepistonrod,5,checktheparallelismofthehydrauliccylinderandtheguiderailandcorrect,6,honingrepairRe-matchingthepiston,7,slightrepairofrustandburrs,severelymustbehoned,8,thenutshouldnotbetightenedtootight,generallyhandtightenedtokeepthepistonrodinanaturalstate.

b,failurephenomenon:impact

铂莱娱乐场Faultanalysis:1.Thepistonandhydrauliccylindersealedbythegaparetoolarge,thethrottlevalvelosesthethrottlingeffect,andthecheckvalveoftheendbufferfails,andthebufferdoesnotwork.

Remedy:1.Accordingtotheregulations,theclearancebetweenthepistonandthehydrauliccylinderismatchedtoreducetheleakagephenomenon.2.Thecheckvalveandthevalveseataremodified.

铂莱娱乐场c,failurephenomenon:insufficientthrustorworkingspeedgraduallydeclineorevenstop

Faultanalysis:1.TheclearancebetweenthehydrauliccylinderandthepistonistoolargeortheO-ringisdamaged,causingthehighandlowpressurechamberstocommunicatewitheachother.2.Duetotheuseofacertainsectionoftheworkingstroke,thehydrauliccylinderboreispoorlylinear(partialdrums)Shape),causingthehighandlowpressureoilsatbothendsofthehydrauliccylindertocommunicatewitheachother.3.Theoilsealatthecylinderendispressedtootightlyorthepistonrodisbent,sothatthefrictionorresistanceisincreased.4.Theleakageisexcessive.5.Theoiltemperatureistoohighandtheviscosityisreduced.Thespeedofthecylinderthatisintermittentlysealedorpoorlysealedissloweddown.Ifthehighandlowpressureoilchambersatbothendsofthehydrauliccylindercommunicatewitheachother,therunningspeedwillgraduallyslowdownuntilitstops.

Remedy:1.IntermittentreplacementofpistonandhydrauliccylinderwithO-ringseal,2.Honingandrepairinghydrauliccylinderbore,singlepiston,3,looseoilseal,straightpistonrodwithoutoilleakage,4Findleaksandtightenthejoints.5.Analyzethecauseofheatandtrytocooldown.Ifthesealgapistoolarge,useapistonoraddasealring.