Introductiontotheelectrichammer
Theelectrichammerisawidelyusedelectrictool.Theelectrichammerisbasedonanelectricdrill,addingapistonwithacrankshaftconnectingroddrivenbyanelectricmotor,andreciprocatingcompressedairinacylinder,sothattheairpressureinthecylinderchangesperiodically,andthechangingairpressuredrivesthehammerinthecylindertoreciprocateStrikethetopofthedrillbit,whichisequivalenttohittingthedrillbitwithahammer.HencethenameElectricHammer.
Theelectrichammerisatypeofelectricdrill,whichismainlyusedtodrillholesinconcrete,floorslabs,brickwallsandstone.Professionaldrillingonwall,concrete,stone,andmulti-functionalelectrichammer,adjusttotheproperpositionwithproperdrillbitcanreplaceordinaryelectricdrill,electricpick.
Becausethedrillbitoftheelectrichammerproducesrapidreciprocatingmovement(frequentimpact)alongthedirectionoftheelectricdrillrodwhilerotating,itcanquicklyhitthebrittlecementconcrete,stoneandothermaterials.hole.Thehigh-endelectrichammercanusethechange-overswitchtomakethedrillbitoftheelectrichammerindifferentworkingstates,thatis,itonlyrotateswithoutimpact,onlyimpactswithoutrotation,andbothimpactsandrotates.
Features
1.Goodshockabsorptionsystem:Itcanmaketheoperatorfeelcomfortableandrelievefatigue.
Realizationway:throughthe"vibrationcontrolsystem";throughthesoftrubberhandletoincreasethecomfortofholding;
2,precisespeedcontrolswitch:thespeedishigherwhentheswitchistouchedLow,canhelpthemachinetotripsmoothly(forexample,onasmoothsurfacesuchasatile,itcannotonlypreventthedrillfromslipping,butalsopreventthedrillfrombreaking.Highspeedcanbeusedduringnormalworktoensureworkefficiency.
3.Stableandreliablesafetyclutch:alsoknownastorquelimitingclutch,whichpreventsthelargetorquereactionforcegeneratedbythejammingofthebitfrombeingtransmittedtotheuserduringuse,whichisasafetyprotectionfortheuser.Thisfeaturecanalsopreventthegeardeviceandthemotorfromstopping.
4.Comprehensivemotorprotectiondevice:Inuse,itisinevitablethathardparticleswillenterthemachine(especiallywhenthemachineisworkingupwards).Drillingholes,suchasdrillingholesonthewall),ifthemotordoesnothavecertainprotection,itisveryeasytobebrokenbyhardobjectsorscratchtheenameledwireduringhigh-speedrotation,whichwilleventuallycausethemotortofail.
5,positiveandnegativeRotationfunction:Theelectrichammercanbeusedinawiderrange.Therealizationformismainlyrealizedbyswitchingoradjustingthepositionofthecarbonbrush.Usually,big-nametoolswillusetheadjustmentofthecarbonbrushposition(rotatingbrushholder)toachievethis.TheadvantageofthisisConvenientoperation,effectivesuppressionofsparkstoprotectthecommutatorandprolongtheservicelifeofthemotor
6.Doublefunctionofhammerdrill
Advantages
TheadvantagesarehighefficiencyandapertureLarge,longdrillingdepth.
Disadvantages
Thedisadvantageisthatthevibrationislarge,whichwilldamagethesurroundingstructurestoacertainextent.ThesteelbarsintheconcretestructurecannotpasssmoothlybecauseoftheworkScoperequirements,nottooclosetothebuilding
Workingprinciple
Theelectrichammerprincipleisthatwhilethetransmissionmechanismdrivesthedrillbittorotate,thereisalsoadirectionperpendiculartothereciprocatingheadoftherotor.Hammeringmotion.Theelectrichammerisdrivenbyatransmissionmechanismtodrivethepistontoreciprocateandcompressairinacylinder.Theperiodicchangeofairpressureinthecylinderdrivesthehammerinthecylindertoreciprocateagainstthetopofthebrick,asifwewerehittingthebrickwithahammer,hencethenameelectricityHammer.
Safeoperation
1.Personalprotectionwhenusingelectrichammer
1.TheoperatorshouldwearprotectiveglassestoprotecttheeyesandfaceWhenworkingupwards,wearaprotectivemask.
2.Earplugsshouldbepluggedduringlong-termoperationtoreducetheinfluenceofnoise.
3.Thedrillbitisinahotstateafterlong-termoperation,Youshouldpayattentiontoburnyourskinwhenreplacing.
4.Whenworking,youshouldusesidehandlesandoperatewithbothhandstopreventthereactionforcefromsprainingyourarmswhenblockingtherotor.
5.StandingontheladderWorkorworkathighplacesshouldtakemeasurestofallfromhighplaces,andladdersshouldbesupportedbygroundpersonnel.
2.Mattersneedingattentionbeforework
1.ConfirmthepowerandelectricityconnectedtothesiteWhetherthenameplateofthehammermatches.Whetherthereisaleakageprotectorconnected.
2,thedrillbitandtheclampTheholdershouldbeadaptedandproperlyinstalled.
3.Whendrillingwalls,ceilings,andfloors,firstconfirmwhetherthereareburiedcablesorpipes.
4.Whenworkingathighplaces,payfullattentiontothesafetyofobjectsandpedestriansbelow,andsetupwarningsignswhennecessary.
5.Confirmwhethertheswitchontheelectrichammeristurnedoff.Ifthepowerswitchisturnedon,thepowertoolwillrotateunexpectedlywhentheplugisinsertedintothepowersocket,whichmaycausepersonalinjury.
6.Iftheworksiteisfarawayfromthepowersourceandthecableneedstobeextended,useaqualifiedextensioncablewithsufficientcapacity.Iftheextensioncablepassesthroughthepedestrianwalkway,itshouldbeelevatedortakemeasurestopreventthecablefrombeingcrushedanddamaged.
Use
1.Thepre-operationinspectionshouldmeetthefollowingrequirements:
1.Theshellandhandleshouldnotbecrackedordamaged;
2.Thecablecordsandplugsareintact,theswitchactionisnormal,theprotectivezeroconnectioniscorrect,firmandreliable;
3.Theprotectivecoversofeachpartarecompleteandfirm,andtheelectricalprotectiondeviceisreliable.
2.Afterthemachineisstarted,itshouldrunwithoutload,anditshouldbecheckedandconfirmedthatthemachinelinkageisflexibleandunimpeded.Duringoperation,theafterburnershouldbesteadyandnottoostrong.
3.Thehandleoftheelectricdrillorelectrichammershouldbegraspedduringoperation.Whendrilling,firstputthedrillbitagainsttheworkingsurfaceofthespecial-shapedrivet,andthenstartitwithmoderateforcetoavoidshaking;ifthespeeddropssharply,reducetheforce.Topreventthemotorfromoverloading,itisstrictlyforbiddentopressurizewithawoodenload.
Fourth,whendrillingholes,payattentiontoavoidingthesteelbarsintheconcrete.
Fifth,theelectricdrillandelectrichammerare40%intermittentworksystem,andshouldnotbeusedcontinuouslyforalongtime.
Six.Whentheworkingapertureisabove25mm,thereshouldbeastableworkingplatform,andguardrailsshouldbearrangedaroundit.
Seven,overloadingisstrictlyprohibited.Attentionshouldbepaidtothesoundandtemperatureriseduringoperation.Ifabnormalitiesarefound,themachineshouldbeshutdownforinspectionimmediately.Whentheworkingtimeistoolongandthetemperatureriseofthemachineexceeds60°C,themachineshouldbeshutdownandallowedtocooldownbeforestartingwork.
8.Donotletgoofthemachinewhenitisrotating.
9.Duringoperation,donottouchthecuttingtools,moldsandgrindingwheelsoftheelectrichammerorelectricsawwithyourhands.Ifitisfoundtobebluntordamaged,itshouldbeshutdownimmediatelyforrepairorreplacement,andthencontinuetowork.
Commonfaults
I.Electricalfaults
Electricalfaultsoftheelectrichammer,mainlyincludingopencircuit,shortcircuit,grounding,androtorcommutationTheringsparksarebig.
Mostofthefaultsoftheopencircuitarebrokenleatherwires,andthemostcommonleatherwireisbrokenattherootofthehandle.Onecharacteristicofsuchabrokenwireisthatthepowercordoftheelectrichammerisconnectedtotheresistancegearofthemultimeter.Presstheswitchandmovetherootoftheleathercordbyhand,thereadingofthemultimeterwillchange.Inaddition,therootoftheplugisalsoeasytobreak,andtherearemanycasesofbrokenswitches.Theswitchcanbecheckedwithamultimetertocheckthecarbonbrushcontact.Poornesscanalsocauseanopencircuit.Therearetwowaystocheckthecarbonbrushmachineandpoorcontact:
Firstobserveiftheendsurfaceofthecarbonbrushissmoothandingoodcontact,thepittedsurfaceisinpoorcontact.Anotherwaytocheckistoconnectthetestleadofthemultimetertotheendofthemotor,andusetwoscrewdriverstopressitonthebrushsocketandtherotoratthesametime.bad.Blowingofthestatorearringscanalsocausethemotortobreak.
Therotorissometimesdisconnected.Thecharacteristicisthatthepowercordisconnectedtothemultimeter,andtherotorisslowlyrotated,andthereadingswillchangegreatly.Thegroundingisgenerallycausedbytheironrubbingofthestatorandrotor.Theironrubbingneedstobereplaced.Therotor,theotheriscausedbywaterormoisture.Itisenoughtodry.Therotorsparksareusuallycausedbytherotorfailureandneedtobereplaced.Rotor,aftertherotorisreplaced,observewhetherthereisironwiping.Iftheironwipingisserious,therewillbeachokingsoundwhenstartingup.Ifthewipingislight,theworkingtimewillbeburntandthecurrentwillalsoincrease.Thereasonsforthewipingare:,Thescrewsfixingthestatorareloose,thebearingseatistooloose,thestatorshellisdeformed,andthebearingisdamaged.
Second,mechanicalfailure
Themainreasonforthefailureofthemechanicalpartoftheelectrichammeristhenon-impactandtheweakimpact.Themainreasonforthenon-impactisthepistonandtheimpulse.Therubberringonthehammerisaging.Putthebigcylinderuprightwiththemouthfacingdown.Ifthehammercanfallfreely,therubberringmustbeaging.Whentherubberringisaging,youcanhearthesoundofthepistonandthehammerhittingeachother.Afterdisassemblingthemachine,itcanbefoundthattheendfacesofthepistonandthehammerareshiny.Shortimpactseedscancausenoimpact(comparewithnewones)
Nooilcanalsocauseweakimpact.Iftheaboveconditionsarenormalandthereisnoimpact,thenyoumustcarefullyobservethelargecylindertoseeiftherearecracks,andthecracksneedtobereplaced.
Ifthemotorrotatesafterthemachineisturnedon,thehammerheadturnsandnocompressionisheard.Thesoundmaybebrokenconnectingrodorbrokeneccentricwheel.Ifthemotorrotatesafterthemachineisturnedon,andthehammerdoesnotrotateorcompress,itmaybethattheprimarywheelisdamagedortherotorshaftisbroken.Thenthereisabrokenumbrellatooth,whichshowsweaknessornorotationatall.
Thereisanotherphenomenonthateveryoneshouldpayattentionto,thatis,thekeyisbroken.Whenwecheckthefitofthegearandtheshaft,duetothestrongfrictionbetweentheshaftandthegearglue,itisnoteasytofindthekeybreak,butthekeyisbroken.Itwillnotworkproperlyafterloading.
Beforereplacingthenewparts,wemustcleanupthestolengoodsandoilstainsinthefaultpointsothatwecanfindotherfaults.
Theneedlerollerbearinginthemiddlecovermustbeusedwell.Ifadefectiveproductisused,ifitisdamaged,theprimarywheelandtheshaftoftherotorcanbeeasilydamaged.