




已閱讀5頁,還剩3頁未讀, 繼續(xù)免費閱讀
版權說明:本文檔由用戶提供并上傳,收益歸屬內容提供方,若內容存在侵權,請進行舉報或認領
文檔簡介
Summarizationandimprovementofconcrete-ejectingmachinesAbstract:Thetextintroducestheprinciple,styleanddevelopmentprocessofdryandwettypeconcrete-ejectingmachines.Itanalyzesdomesticandforeignapplicationinstance,allkindsofconcrete-ejectingmachinesmostlymeritandflaw.Alsoitintroducessomerepresentationalwetcon-crete-ejectingmachinesdomesticdeveloped.Someflawsofconcrete-ejectingmachinesareimproved.Keywords:concrete-ejectingmachines,framecharacteristic,operatingprinciples,highway.Concreteistheuseofcompressedairjet,willbeallocatedacertainlevelandgoodwater-cementratiomixingconcretematerials,throughthepipelinebythejetnozzle,andhighspeedjetouttothesurfacebysprayingaconcretesuppor-tLayerissprayedconcreteconstructionequipmentoperationsinthemain.Asaconcretesprayingtechnologysavingconcreteandsteel,timber,labour-savingandimproveconstructionefficiencyandreducecosts,andothercharacteristics,theconcreteapplicanofthejetincreasinglycommon.Hasnowbeenwidelyus-edinrailway,highway,waterconservancy,construction,coalandotherbuildi-ngworksinconstruction,atunnelsolution,roadslope,constructionpit,unde-rgroundworksoftemporaryandpermanentcaretosupporttheconstructionm-achineryoperations.11TheworkofsprayedconcretemechanismandthedevelopmenttrendInsprayedconcreteoperations,theoverwhelmingmajorityoftheuseofconcrete-rotoraircraft,suchasjetstructureissimple,reliableperformance,asmall,lightweight,easytooperateandmaintenance。Dryjetprincipleandstructureare:therotorwithalinertoacertainspeedofrotation,andthecombinationofpressureplatesfixedonthelinerfixed,withaboardconnectedintothewindpipeanddischargingelbow,whenRotorequippedwithmaterialsinthevariousmaterialsCuprotationandintothewindtotheelbowanddischargingthesametime,intheroleofgasunderpressure,andmaterialsthroughtheelbowandexpectedtolosethematerialtransportedtothenozzleandnozzleinthewaterBlastingaway.Dryconcretejetofthemainadvantagesisalongdistancecarrier,simpleequipment,durable,butbecauseitissodrynozzles,mixingconcretemixedwithwater,andthereforetheconstructiondust,aremoreresilient,drysprayingoperationsagainstworkersinthedustHealth,inparticularthenarrowroadwayconstruction,dustpollutionismoreserious2。Fromthe1960sonwards,inWesterndevelopedcountries,wetsprayingbegangraduallyintroducingthetechnology,allkindsofwetconcreteJetsalsobedeveloped,sprayedconcreteanddrythemaindifferenceisthatenough(inwater-cementratiorequirementsshouldbeThevolumeof)theopportunitytojointhemixingofdifferentwater。WetsprayedconcreteisexpectedlosetheiraccesstotheformerMixturehasaddedafootofwatermixing,theloserinthedeliveryofthecylinderisthewetconcrete;drysprayedconcreteislostinthetransmissionofthematerialdidnotjointhemixingWaterdrymaterial(groundhumiditymixingnaturalmaterialsordryingmaterials),andinsufficientvolumenozzlebeforemixingwithwater,drymixtureandmixquicklyafterthewholewetconcretedeliveredtothenozzle,speedupthecoagulationofthedopedAfterthejettobeamamaterialofconstruction3.Atthenationallevel,aspeoplesenvironmentalawarenessandenhancethequalityofsprayedconcreterequirementsoftheincrease,anincreasingnumberofwetconcreteintotheuseofjetaircraft.Inrecentyears,somedomesticunitsalsobegantodevelopseveralwetconcretejet,butthescaleofproductionisstilltobeexpanded.Tosumup,jetwetconcreteofthemainadvantagesarethefollowing:1)greatlyreducedtheplaneandnexttothenozzlesofdustconcentrationandeliminatethehealthhazardstoworkers.2)highproductivity.DryconcreteJetsgeneralnomorethan53m3/h,andtheuseofjetwetconcrete,artificialoperationsupto103m3/h,amechanicalmanual,upto203m3/h.3)Thereboundwaslow.JetDry,concretereboundofupto15percentto50percent,thewetspraytechnicalreboundratecanbereducedtobelow10%.4)wetspray,easytocontrolbecauseofwater-cementratio,ahighdegreeofconcretehydration,itcansignificantlyimprovethequalityofsprayedconcreteandimprovequalityoftheconcreteabsorbed.2WetconcreteJetsandthetypeofworkprincipleConcretePumpingmainpistonpump-jetsprayandawet-wetsprayingmachinescrewpumptwocategories.Pistonpump-jetaircraftwillbewetplunger-wetconcreteasaconcretepumpthebasicbodyjet,withtheexportpipelinetothenozzleandinthisAccesstocompressedgaswilljetoutofconcrete,wetspraysuchaheavymachinegeneralHowever,longdistancetransmission,SecondBeach,theXiaolangdiWaterConservancyProjectandotherlarge-scaleuseoftheaircraftsmaindisadvantageisthatlowproductivity,andscrewthestatorsetsofwearandtearmoreserious,therewaslittlescopeofapplication.3DomesticwetconcreteJets3.1SPZ26-wetconcreteJetsSPZ26-wetconcretejetsenttoagas-rotoraircraftwetconcrete,anditsworkingprincipleofLiwa280RuishiAsimilarmodel,byitsrotorrotarymotordrivenbyreducer,theaircraftequipmentlessinvestment,highproductivity,lightweight,Goodmobility4.3.2PZ25BConcretejetaircrafttospraydry,wetsprayandspraytide.Itautomaticallyclean,non-stickblock,cuttingspeed,littlemorethanexpected,highefficiency.3.3impellerwetconcretewetconcreteimpellerjetaircraftisanewwetsprayingmachine,itadoptedaimpellerfeedingdevice,areliable,longlife,toaggregatesizeofthebigadvantages.Atpresent,Chinasdevelopmentofthewetconcretepumpinganddual-usespray-spray-wetconcretetunnelconstructionisindispensabletoengineeringequipment,themainimpellerandrotorpiston-typepumpsandwetsprayingmachine.Impellerandrotorpistonwetsprayingmachineshort-distancetransportation,displacementofsmall,fragilepiecesofshortlife,seriousleakagepulp,cleaningalongtime5.4JetpromotetheuseofwetconcreteinsomeoftheissuestoberesolvedAtpresent,duetowetjettechnologyhasobviousadvantages,wetconcreteJetsintheprojectisalsoanincreasingnumberofapplications,butbecausetherearesomeoutstandingissues,thewetconcretetopromotetheuseofjetplayedacertainobstaclesRole,eveninChina,currentlythemainsprayedconcreteoperationsisstilldryspray.1)useofwetconcretejetofliquidcondensate,ajointventureofimportsandhigherprices(upto6000yuan/t8000元/t),anddomesticliquidcondensateofnoproduction,shouldberelativelydrySprayofpowderandquick-settinglowprice(morethan1000yuan/t).2)lowlaborcostsandpeoplesenvironmentalawarenesstobeincreased.3)wetconcretejetoperations,morecomplexequipment,operationandmaintenanceofjetaircraftforlessthandry.4)theuseofwetconcretejetoperations,higherequipmentinvestment.5Improvementofconcrete-ejectingmachines5.1Aftertheconcreteimprovementofthecharacteristicsofajet1)dustbetter.Theimproveduseofthesealcannotbedust,hasgreatlyimprovedtheworkingconditionsofworkers,increasedlaborproductivity.2)increasetheflexibilityofhigh-adhesiverubbermaterialcavity.Concretecanbeaneffectivesolutiontotheproblemofbondedeasily,removetheconcretetoreducethenumberofbondedandimprovelaborefficiency.3)useofwear-resistantrubberpads.Rubbermatsmorethandoublethewearresistance,adecreaseofrubberpadstoreducethefrequencyoftheuseofreplacementcost.4)theoverallchangefromtheoriginaldriveshaftcomposedofthreeparts,noteasytosolvethedemolition,theproblemofmaintenance.5.2ImprovethedifferencebetweenbeforeandaftertheconcreteJets1)theoriginalconcretejetrotatingbodyformedbythewear-resistantcastironfoundry,withouttreatment,aftertherust-bonding,improvedafterthejetcavitysprayinganti-rusttreatmentandgreatlyreducethepossibilityofabond.2)theoriginalconcretejetrotationofdirectcontactwiththematerialI,Mifengbuyan;feedmouthwithoutsealingdevice,improvedtoincreaseawear-resistantrubberpadsandmouthandfeedring.3)Inrotatingbodyandmouthspraytoincreaseflexiblerubbermaterial,andtherotationoftheoriginalconcretejetsprayandaflexiblerubbermouthcavity.Concreteworkofahigh-pressurejetofaircavity,flexiblerubberintheaircavityunderthepressureofbeingcompressed,rotatingbodyisconstantlyrotating,whentherotationofthechamberpassedaflexiblerubberpressurezone,thepressuredisappeared,flexibleRubbercavityinthestretchunderitsownrestitutionduetothehighflexibilityofrubberattachedtothecavityontheconcreteandscatteredbysqueezingdown,automaticremovaloftheconcretebonding,inordertofacilitatemaintenanceandreplacementoftherotatingflexiblerubberLiucavity,theoverall12willbesplitintofourcavity,eachofthethreecavity.Thesametoken,Iexpectedtoincreaseinaflexiblerubbermaterialcavity.4)theoriginalconcretejetdriveshaftfortheoverallstructure,cleaninguptherotatingbodycavityorreplacementworkflexiblerubbermaterialcavity,tobescreenedinShangzuobodyandcanalsoXiediao,willimprovetheentireshaftisdividedintothreeparts,Themiddleofaconnectingshaft,throughthehomeside,connectingshaft,thepinwillbelinkedtothetwo-axis,demolition,onlytoteardowntheshaftcanbeconnectedinblocksoflift,thereplacementofflexiblerubberbodycavityorclean-uprotation,Provincewhentheeffort,boostedbyincreasingtheflexibilityofrubberrubbersealcavityandthedriveshaftconnectedtothebodystructureandeffectivesolutiontothedustandinconveniencetothedemolitionofconcreteandbondissues,someusefromthescene,hasbeenmadeGoodresults.6Theendconclusionofawavewhilesprayingcanreducedustconcentrationandreducetherateofrebound,butthedusthazardstillexists,stillhigherratesreboundfromtherequiredstandardthereisstillaconsiderabledistance.Allcountriesintheworldofwetconcreteofthejetatthesametime,developedajetofwetconcrete,andincreasinglymature,manycountrieshavestartedtousealot.Chinascurrentwet-spraymethodisstillintestingstageandnotyetfullypromotetheapplicationlevel.Mainlywetsprayingmachines
溫馨提示
- 1. 本站所有資源如無特殊說明,都需要本地電腦安裝OFFICE2007和PDF閱讀器。圖紙軟件為CAD,CAXA,PROE,UG,SolidWorks等.壓縮文件請下載最新的WinRAR軟件解壓。
- 2. 本站的文檔不包含任何第三方提供的附件圖紙等,如果需要附件,請聯(lián)系上傳者。文件的所有權益歸上傳用戶所有。
- 3. 本站RAR壓縮包中若帶圖紙,網(wǎng)頁內容里面會有圖紙預覽,若沒有圖紙預覽就沒有圖紙。
- 4. 未經(jīng)權益所有人同意不得將文件中的內容挪作商業(yè)或盈利用途。
- 5. 人人文庫網(wǎng)僅提供信息存儲空間,僅對用戶上傳內容的表現(xiàn)方式做保護處理,對用戶上傳分享的文檔內容本身不做任何修改或編輯,并不能對任何下載內容負責。
- 6. 下載文件中如有侵權或不適當內容,請與我們聯(lián)系,我們立即糾正。
- 7. 本站不保證下載資源的準確性、安全性和完整性, 同時也不承擔用戶因使用這些下載資源對自己和他人造成任何形式的傷害或損失。
最新文檔
- 2025至2030年中國小家電塑料模具數(shù)據(jù)監(jiān)測研究報告
- 2025至2030年中國實木歐式餐臺數(shù)據(jù)監(jiān)測研究報告
- 2025至2030年中國咖啡色高鋁瓷數(shù)據(jù)監(jiān)測研究報告
- 2025至2030年中國反光藍背心數(shù)據(jù)監(jiān)測研究報告
- 2025至2030年中國半自動彩瓦成型機數(shù)據(jù)監(jiān)測研究報告
- 2025至2030年中國光學尺數(shù)顯系統(tǒng)數(shù)據(jù)監(jiān)測研究報告
- 2025至2030年中國倒車雷達用貼片中周數(shù)據(jù)監(jiān)測研究報告
- 從基礎到應用透視區(qū)塊鏈在物聯(lián)網(wǎng)IoT中的作用
- 辦公智能化助推健康管理醫(yī)療AI技術新進展
- 從地方特色出發(fā)的區(qū)域經(jīng)濟協(xié)同發(fā)展戰(zhàn)略研究
- 社區(qū)成人血脂管理中國專家共識2024(完整版)
- 老年健康照護課件
- 西師版小學三年級下冊數(shù)學半期試題
- 過敏性皮炎的護理查房
- 2023年《思想道德與法治》期末考試復習題庫(帶答案)
- GB/T 19494.1-2023煤炭機械化采樣第1部分:采樣方法
- 彩繪曼陀羅課件
- GB/T 28417-2023碳素軸承鋼
- 華為人力資源管理手冊
- β內酰胺類抗菌藥物皮膚試驗指導原則(2021版)
- 我的家鄉(xiāng)福建南平PPT
評論
0/150
提交評論