Withtherapiddevelopmentofindustry,environmentpollutionisbecomingmoreInordertoadapttotheneedsoftheconstructionofurbanenvironmentalsanitation,clearintimethecity,development,hasbecomeanimportanttopicofthesetbeforeus.Thedevelopmentofurbanizationinourcountry,theincreaseoftheroadtotherequirementsofenvironmentalprotectionandimprove,whichmakesthesanitatiotheroad,guardrailandpurifyairyaction,isoneoftheimportanturbanenprotectionequipment.Thecurrentdomesticproductionofhighpressurecleaningcarbackwardintechnology,therearperformancewhileissuperior,butthepriceisexpenexchange,itisnotthesolutiontothehighpressurecleaningcarshasbecomeChina'surbanenvironmentalprotectimportantproblemtobesolved.Itnotonlywithindependentintellectualpropertyrights,andcanimprovethedesignlevelofsanitationvehiclesinChinatodevelopandmanufactHighpressurecleaningcarsmainlybythepowersystem,watersystesystemforcleaningthecartowalkandwaterpumpsprovidemotivation.Watersystemmainlybythehighpresscomponents,waterthroughthepumppressurecanimproveafterto8MP,forpressurejetsprayingtoroad,effectivelyflushthesanddust.Hydraulicsystemmainlybythehydraulicpumpandmotorandandvalvesetandothervehicletowalkandinjectionaction.Electriccontrolpartbdisplaycontrolpaneletc.InthispaperthedevelopmentofhighpressurecleaningcarmaintechnicalparametersareasTheratingcapacity;Engineoutputpower45KW;Thebiggestwaterspraywisnotlessthan3m;Sprayworkforvehiclespeed5km/lessthan8MP;Totalnumberofnozzle21;Waterpumpwaterlargestamount652powerdistributio2.1thebasicprincipleofthepowertransmissionandschemeselectionHighpressurecleaningcaraccordingtothefunctionoftherealizationofthedividedintotwokindsofstate:anormalworkisdrivingcondition,highpressurecleaningthecarandgeneralatthesamecar,iswateringoperationsstate,thestateinthevehiclewithvhighpressurewatersprayhomework,cleaningtheroad.Duetothehighpressurecleaningthecarneeddrivinganddriventwoaspectsofthepumppower,sothedynamichowtoprovidedesignistoconsiderwhentheAthomeandabroadandusuallyusethepowerdistributionsolutionsoneistoadoptdoubleconfigurationoftheenginepowertransmissionsystem,ismaenginevehiclesnotalter,transmissionsystemwillnotindependenceinvehiclesoutsidethesystemofpowerauxilisystemforhighpressurepumpprodisadvantageisasthevehicleinthewalessthan10km/h,thistimethemainenginecanpowerallocationisnotreasonable,canproducefuelandpowerwaste,andoccupythespaceofviceenginebody,lessthewaterstoragevolume,vicevehicleengineinstallationaddednewvibrationnoisesources,theinfluencethestabilityoftheAnotherplanistousethevehicleenginevehicletransmissionsyshydraulicsystemprovidethepower,throughthepointswithFenDongXiangaction,inthetransferroad,drivenbythemainengineFenDongXiangtodrivingaxledifferentials,highspeedmovemthemainengineFenDongXiangtohydraulicsysteplaytotheenginepower,makethevehicleinthewaterspworkingathighspeedratingoftheworkofthestate,notonachieveurbanenvironmentalprotectionrequirement.Thevehireasonable,vehicleweightoflow,waterstoragesengineconfigurationisamorereasonableconfiguration,sothispaperpowerintToensurethehighpressurepumpprovideoftheinjectionpressureisconstant,drivethehydraulicloopquantitativehydraulicpumpmustworkincratingoftheworkofthestate,watersprayoperationsvehicleofthespeedandtheroadofinjectioneffectisalsonottochangeabouttheamountofdriving,sodrivethevariablepumpwillworkinconstantspeedratingoftheworkofthestate,theconsumptionofdrivingpoweralsoforsettingvalue.Thus,whentheenginepowerto2.3newsingleaxisFenFenDongXiangpowerdistributionisthecoreofthesystem,thetraditionalthoughtofdesignFenDongXiangusuallyadoptstwotothreeaxisstructureofpowerdistribution.Thispaperintroducesthedesignofnewlighthigh-pressurecleaningvehicleUSESthechassisisisuzuNKR55LLAlightchassisoftheFenDongXiangsizestoolthecharacteristicsofthepowerdistributionsdevelopmentofthesingleshaftdriving,theFenDongXianggreatThehydrauliccontrolsysmeeting,andthemainvariablepump,thhydrauliccylinder,cooler,integratefunctionoftherealizationoftheperspective,hydraulicsystembyhydraulicmotordrivetravelsystemandhydraulicpressuremotord3.1hydraulicmotordrivedriThevariablepump,hydraulicmotorandthecorrespondinghydrhydraulicsubsystem,awalkforthesystemforoilpump,andquantcoaxialconnected.Thissystemconsistsofintegratedcontrolvalvestorealizethecontrolofhydraulicpumpandhydraulicsystem.Thevariablepumpandmotorselection,accordingtothebasicpowertodeterminethevalue.3.2hydraulicmotordrivewatersHydraulicmotordrivewaterspraysystembyquantitativepump,quantitativehydraulicmotor,waterpump,reliefvalve,cooler,filterandhydrauliccylinderandstackedvalvesgroupetc.Forthehydrauliccylinderandsforthecontrolofwatersprayframtank,passesthroughtoreturntocoolerwater.tankflowofwateroutofthepumpwillimproveafterwaterpressureto8MP,formhighpressurejetsprayingtotheroad.Thehighpressurepumprationalselectionofengineefficiency,thebestutilization,bestflushefficiencyhavneedaccordingtothedesignrequirementsandengineparameters,suchadeterminethehigh-pressurepumppower,speedandtheparameterssuchaspumppressureatwork.Watersystemdesignofthemainproblemsincludingthefollowing4.1thetelescopicmulti-degree-of-freedomwatersprayframeWatersprayframeisinjectionsystemofactuators,installedinhighpressurecleaningcarhead,highpressurewaterspraynozzleintheframewidthofthejetwash,designthenewhydraulicconinstallanozzletwooftherearprotrudingfromthefrontofthecar,andthenozzleintoastraightline,andthehighpressurewaterjetto;Aftercompletionofthenozzletuberetractside.Watersprayhydraulicsystem,alsodesignsofthemechanica4.2waterspraysystemparametersoptHighpressurecleaningthecaristhepurposeofthequalityoftheroadsurfdesigntoconsiderwhenimportantquestion,alsoisthepaststudiestheproblemofnopointtoconsider.Theeffectofroadsurfacecleaningandmanyparameters.Incinjectionheight,theshapeofthenozzle,injectionpressure,injectionAnozzlediffusionAngle,distanceofthenozzle.Throughalotofthetheoreticalandexperimentalresearch,todeterminetheheightoftheinjectionpresAngle,thewidthofthejet,thenozzleofthediffusionAngleofpavement,washthebestresults,thewashrateinabove,cleanunitareaofthepavement,theconsumptionofwaterandenergy,reachedthebestmatchingvalue.Electroniccontrolsystemtorealizetheworkingstateofthevehicledisplay,display,hydraulicdisplay,watertankworkingstatusdisplay,hydraulicsystemrunningtimerecordthewholesystemUSESmodulardesign,thecontrolpanelintegraproperplace,facilitatetheoperatorcontroloperaThewatertankofthemonitoringandforecastofelectriccontimportantlink,mustbestrictlycontrolled.Taftercoolingtoenterhighpressurepumpandsohaveawatertankmustotheamountofwater.Inthethedesignofthemagneticlevitataccuratelymeasurethelevelofheight.Controlsystemmainlyincludingoperationbox,thepowerswitchhandlehandle,watersprayhandleadjustablecontrolhandletoandfropedals.Thedesignofthecontrolsystem,thearrangstructure,thehandlepositionoiltank,waterpump,FenDongXpumpandhydraulicpressuretankparallelisdecoratedinthecabinandwatertanksobetweenbothsidesputhingeddooroutsideusing,openconvenient,conmaintenanceinspection.Watertankusestainlesssteelstrucdecorationsidewaiandskirtedge.FenDhydraulicoiltankinwaterpump,transmissionandthesecondtransmissiobetween.VehicleusedUnigraphicssoftwarefor3dsdesignofthevehicleassemblyfunctionofvirtualassembly.Thedevelopmentofnewhighpressurecleaningcar,inordertoimprovetheconfigurationofthepowerdistributionway,givefullplaytothewatersprayoperationsofenginepower,improvingthepressureofspraywater;Andthepavementflushtheinfluenceontheeffectofparametersareoptimized.Thepowerdistributioresearchaspectssuchasroadflusheffectforseveranewhighpressurecleaningcar,prototypetesteachindex,throughtoreserverequirements.Highpressurecleaningthedevelopmentofcountry'shighperformancehigh-pressurecleaningthecarindepend新型高壓清洗車種重要設備。目前國內生產的高壓清洗車技術落后，存在許多問題；國外的清車輛的自主設計開發及制造能力°成。本文開發的高壓清洗車主要技術參數如下：額定容量；發動機輸出功率45KW;最大噴水寬度不小于3m;噴射工作時車輛行駛速度為5km/h;噴射水壓不小于8MP;噴嘴總數21個；水泵最大噴水量65km/h。2動力分配及切換系統駛和驅動水泵兩方面的動力，所以該動力如何提供是設計時需要考慮的首要問傳動系統，即車輛主發動機不作改動，傳動系統也不作改動，使用一臺獨立于車輛動力系統之外的輔助發動機驅動液壓系統為高壓水泵提供動力。該方案的優點是結構簡單，價格較低，缺點是由于車輛在噴水工作時低速行駛，其速度小于10km/h,此時主發動機不能工作在最佳工作點，使功率分配不合理，會產生燃料和功率的浪費，同時副發動機占據車身的空間，相對減少了車輛的蓄水體積，副發動機的安裝增加了新的振動噪聲源，影響整車的穩定性。另外一種方案是采用車用主發動機為車輛傳動系統和液壓系統提供動力，通過分動箱的分動作用，在轉移行駛時，動力由主發動機經分動箱到后橋差速器，車輛高速運動；在噴射作業行駛時，動力由主發動機經分動箱傳到液壓系統，一方面控制作業行駛速度，另一方面驅動水泵噴水。該方案與前述方案相比較，其優點在于，充分發揮了發動機的功率，使車輛在噴水作業時仍可以工作在高轉速的額定工作狀態，不但節省了一臺發動機，降低了燃油消耗，同時發動機尾氣排放指標更有利于達到城市環保要求。整車的結構更加合理，車輛的自重較低，蓄水空間相應增加。綜上所述，單發動機配置是一種更為合理的動力配置方案，所以本文在新型高壓清洗車的設計中，采用了單發動機的設計方案。2.2功率的合理分配為保證高壓水泵提供的噴射壓力恒定，驅動該液壓回路的定量液壓泵必須工作在恒轉速的額定工作狀態，噴水作業時車輛的行駛速度與路面的噴射效果有關，也是不可改變的量，所以驅動行駛的變量泵也要工作在恒轉速的額定工作狀態，行駛消耗的功率也為定值。因而，作業時需要的發動機功率為定值。2.3新型單軸分動箱的設計分動箱是動力分配系統的核心部分，傳統思想設計的分動箱通常采用二到三軸結構進行動力分配。本文設計的新型輕型高壓清洗車采用的底盤是五十鈴NKR55LL輕型底盤，用傳統結構的分動箱尺寸偏大，無法滿足尺寸要求。根據動力分配系統的特點，自主設計開發了單軸傳動的分動箱，大大減小了分動箱的尺寸，使車身結構更加緊湊。3液壓系統液壓控制系統是噴水作業時各個動作得以實現的關鍵，主要由變量泵、定量泵、驅動馬達、液壓缸、冷卻器、集成控制閥塊、過濾器等組成。從實現的功能上來看，液壓系統由液壓馬達驅動行走系統和液壓馬達驅動噴水系統兩個子系統3.1液壓馬達驅動行駛系統、液壓馬達和相應的液壓回路構成了液壓行走子系統，為系統的補油泵，與定量泵同軸連接。該系統由集成控制閥塊實現對油路和液壓泵的控制。變量泵及馬達的選型，基本根據前述的功率值來確定。液壓馬達驅動噴水系統由定量泵、定量液壓馬達、水泵、溢流閥、冷卻器、過濾器和液壓缸及疊加閥組等組成。為液壓缸和疊加閥組共同組成，用于控制噴水架的升降、伸縮等動作。液壓油返回油箱時，經過水冷卻器冷卻。4水噴射系統水系統是高壓清洗車的核心部分主要由高壓水泵、噴水架、噴嘴、噴槍及閥等組成。水箱流出的水經水泵后將水壓提高到8MP,形成高壓射流噴射到路面。高壓泵的合理選取，對發動機效率的最佳利用、最佳沖洗效率都有重要的影響，需要根據設計要求及發動機參數等來確定高壓泵的功率、工作轉速和泵壓等參數。水系統設計中的主要問題包括以下兩個方面。4