Ib txwm ua haujlwm ntawm lub cav yog ua tau tsuas yog tias nws lub crankshaft tsis muaj qhov tseem ceeb axial hloov pauv - rov qab.Qhov chaw ruaj khov ntawm cov ncej yog muab los ntawm qhov tshwj xeeb - thrust ib nrab-ntiv nplhaib.Nyeem txog crankshaft ib nrab nplhaib, lawv hom, tsim, xaiv thiab hloov hauv kab lus no.
Dab tsi yog crankshaft txhawb nqa ib nrab-ntiv nplhaib?
Cov roj siab sensor yog lub ntsiab lus tseem ceeb ntawm kev ntsuas thiab lub tswb ntsuas rau lub lubrication system ntawm reciprocating internal combustion engines;Lub sensor rau ntsuas lub siab nyob rau hauv lub lubrication system thiab taw qhia nws qhov txo qis hauv qab theem tseem ceeb.
Crankshaft thrust ib nrab-nplhaib (txhawb ib nrab-ntiv nplhaib, crankshaft washers, crankshaft thrust bearing ib nrab-ntiv nplhaib) yog tshwj xeeb tiaj bearings nyob rau hauv daim ntawv ntawm ib nrab-ntiv nplhaib uas tsim kom muaj kev ua hauj lwm axial displacement (backlash, clearance) ntawm lub crankshaft ntawm ib sab combustion. cav.
Nyob rau hauv lub cav combustion sab hauv, qhov teeb meem ntawm kev sib txhuam yog mob heev, tshwj xeeb tshaj yog muaj feem xyuam rau lub crankshaft - nyob rau hauv ib tug pa plaub-lub tog raj kheej cav, lub ncej muaj tsawg kawg yog tsib lub ntsiab lus (cov ntaub ntawv tseem ceeb) nrog rau ib tug ncaj loj cheeb tsam.Txawm tias muaj kev sib txhuam ntau dua tuaj yeem tshwm sim thaum lub puab tsaig lub puab tsaig tuaj rau hauv kev sib cuag nrog cov kev txhawb nqa.Txhawm rau zam qhov xwm txheej no, cov ntawv xov xwm tseem ceeb ntawm lub crankshaft tau ua kom dav dua li lawv cov kev txhawb nqa.Txawm li cas los xij, xws li kev daws teeb meem ua rau axial ua si ntawm lub crankshaft, uas yog qhov tsis txaus ntseeg - axial txav ntawm lub ncej ua rau hnyav hnyav ntawm qhov chaw ntawm lub crank mechanism thiab tuaj yeem ua rau lawv tawg.
Txhawm rau tshem tawm cov backlash ntawm lub crankshaft, lub thrust bearing yog ntsia ntawm ib qho ntawm nws cov kev txhawb nqa.Qhov no bearing txawv ntawm ib tug pa liner los ntawm lub xub ntiag ntawm lateral thrust nto nyob rau hauv daim ntawv ntawm ib tug dab tshos, tshem tau rings los yog ib nrab rings.Nyob rau ntawm lub puab tsaig ntawm lub crankshaft nyob rau hauv lub installation ntawm no bearing, thrust annular nto yog ua - lawv nyob rau hauv kev sib cuag nrog ib nrab ib ncig.Niaj hnub no, tag nrho cov piston engine yog nruab nrog thrust bearings, thaum tag nrho cov qhov chaw muaj ib tug zoo tib yam qauv thiab lub hauv paus ntsiab lus ntawm kev ua hauj lwm.
Hom thiab tsim ntawm crankshaft txhawb nqa ib nrab-ntiv nplhaib
Ob hom ntawm qhov chaw yog siv los txo crankshaft ua si:
• Thrust ib nrab nplhaib;
• Cov ntxhua khaub ncaws.
Cov tshuab ntxhua khaub ncaws yog ib lub nplhaib uas tau nruab rau hauv kev txhawb nqa ntawm cov ntawv xov xwm tseem ceeb ntawm lub crankshaft.Ib nrab-ntiv nplhaib yog ib nrab ntawm cov nplhaib uas tau nruab rau ntawm kev txhawb nqa ntawm lub nraub qaum lossis ib qho ntawm cov ntawv xov xwm hauv nruab nrab ntawm lub crankshaft.Niaj hnub no, ib nrab lub nplhaib feem ntau yog siv, raws li lawv muab qhov zoo tshaj plaws haum rau qhov chaw thrust ntawm lub crankshaft thiab hnav tawm ntau tusyees, thiab yooj yim rau installation / dismantling.Tsis tas li ntawd, cov tshuab ntxhua khaub ncaws tsuas tuaj yeem ntsia tau rau ntawm cov ntawv xov xwm tseem ceeb hauv qab ntawm tus ncej, thiab ib nrab lub nplhaib tuaj yeem ntsia tau rau ntawm txhua lub caj dab.
Structurely, ib nrab-rings thiab washers yog yooj yim heev.Lawv ua raws li cov khoom siv tooj liab lossis stamped steel ib nrab-ntiv nplhaib / lub nplhaib, uas yog siv los tiv thaiv kev sib txhuam, uas txo cov kev sib txhuam ntawm qhov thrust nto ntawm lub puab tsaig puab tsaig.Ntawm cov txheej tiv thaiv, ob los yog ntau tshaj ntsug (nyob rau hauv qee kis radial) grooves yog tsim rau cov roj dawb.Tsis tas li ntawd, qhov thiab kho cov pins ntawm ntau cov duab tuaj yeem muab rau ntawm lub nplhaib / ib nrab lub nplhaib kom tiv thaiv ib feem ntawm kev tig.
Raws li cov khoom siv ntawm kev tsim khoom ntawm ib nrab rings yog:
• Khoom bronze;
• Steel-aluminium - aluminium alloy yog siv los ua txheej txheej tiv thaiv;
• Hlau-ceramic - bronze-graphite txau yog siv los ua txheej txheej tiv thaiv.
Bronze ib nrab nplhaib
Hlau-aluminium ib nrab nplhaib
Hlau-ceramic ib nrab nplhaib
Niaj hnub no, steel-aluminium thiab ceramic-hlau ib nrab-ntiv nplhaib feem ntau siv dav, thiab feem ntau lawv tau nruab rau hauv ib lub cav ntawm ntau sab ntawm phau ntawv txhawb nqa.
Ib nrab rings muaj ob hom loj:
• Nominal;
• Kho.
Qhov chaw ntawm nominal loj yog ntsia rau ntawm cov cav tov tshiab thiab ntawm cov cav nrog me ntsis hnav ntawm qhov chaw thrust ntawm lub crankshaft thiab kev txhawb nqa.Kho qhov loj me me muaj qhov tuab ntxiv (feem ntau yog nce ntawm + 0.127 hli) thiab tso cai rau koj los them nyiaj rau qhov hnav ntawm qhov thrust ntawm lub crankshaft thiab kev txhawb nqa.
Lub crankshaft thrust bearing tuaj yeem nyob ntawm nws cov ntawv sau ntau yam:
- Ntawm ib qho ntawm cov ntawv xov xwm hauv nruab nrab (hauv plaub lub tog raj kheej cav - ntawm peb);
- Hauv qab caj dab (los ntawm flywheel sab).
Hauv qhov no, siv ob lossis plaub lub nplhaib ib nrab.Nyob rau hauv cov ntaub ntawv ntawm ob ib nrab-ntiv nplhaib, lawv yog mounted nyob rau hauv lub grooves ntawm qis bearing cover (yoke cover).Nyob rau hauv cov ntaub ntawv ntawm plaub ib nrab-ntiv nplhaib, lawv yog mounted nyob rau hauv lub grooves ntawm lub qis cover thiab lub Upper kev them nyiaj yug.Kuj tseem muaj cov cav nrog ib nrab-ntiv nplhaib lossis ib lub tshuab ntxhua khaub ncaws.
Yuav ua li cas xaiv thiab hloov crankshaft ib nrab nplhaib?
Sij hawm dhau mus, thrust ib nrab-ntiv nplhaib, zoo li cov kabmob dawb, hnav tawm, vim tias qhov kev ua si axial ntawm lub crankshaft nce.Kev ua haujlwm rov qab (qhov sib txawv) ntawm lub crankshaft nyob rau hauv thaj tsam ntawm 0.06-0.26 hli, qhov siab tshaj plaws - raws li txoj cai, yuav tsum tsis pub tshaj 0.35-0.4 hli.Qhov ntsuas no yog ntsuas los ntawm kev ntsuas tshwj xeeb mounted ntawm qhov kawg ntawm lub crankshaft.Yog hais tias lub backlash tshaj qhov siab tshaj plaws, lub thrust ib nrab nplhaib yuav tsum tau hloov.
Lub ntsiab hom diaphragm (diaphragm) roj siab sensors
Lub sensor yog hom kev sib cuag.Cov cuab yeej muaj ib pab pawg neeg sib cuag - ib qho kev sib cuag txav tau nyob rau ntawm daim nyias nyias, thiab kev sib cuag ruaj khov txuas nrog lub cev lub cev.Txoj hauj lwm ntawm cov neeg raug xaiv nyob rau hauv xws li ib tug txoj kev uas nyob rau hauv ib txwm roj siab nyob rau hauv lub kaw lus cov kev sib cuag yog qhib, thiab nyob rau hauv qis siab lawv raug kaw.Lub chaw pib siab yog teem los ntawm lub caij nplooj ntoos hlav, nws nyob ntawm hom thiab qauv ntawm lub cav, yog li kev sib cuag hom sensors tsis tas yuav hloov pauv.
Rheostat sensor.Cov cuab yeej muaj ib lub xov hlau ruaj khov rheostat thiab cov slider txuas nrog lub membrane.Thaum lub membrane deviates los ntawm qhov nruab nrab txoj hauj lwm, lub slider tig ib ncig ntawm lub axis los ntawm txoj kev ntawm lub rooj zaum rocking thiab slides raws lub rheostat - qhov no ua rau ib tug kev hloov nyob rau hauv lub tsis kam ntawm lub rheostat, uas yog saib xyuas los ntawm ib tug ntsuas los yog hluav taws xob chav tsev.Yog li, qhov kev hloov pauv ntawm cov roj siab yog cuam tshuam los ntawm kev hloov pauv ntawm qhov tsis kam ntawm lub sensor, uas yog siv rau kev ntsuas.
Thaum xaiv ib nrab-ntiv nplhaib, nws yog ib qho tsim nyog yuav tsum coj mus rau hauv tus account ib qho tseem ceeb nuance: tsis yog tsuas yog ib nrab-ntiv nplhaib, tab sis kuj yog qhov thrust nto ntawm crankshaft yuav raug hnav.Yog li ntawd, nyob rau hauv lub cav tshiab, thaum lub crankshaft clearance nce, nws yog feem ntau yuav tsum tau hloov tsuas yog hnav-tawm ib nrab-rings - nyob rau hauv cov ntaub ntawv no, nws yog tsim nyog los yuav ib feem ntawm nominal loj.Thiab nyob rau hauv lub cav nrog lub mileage siab, hnav ntawm thrust nto ntawm lub crankshaft yuav pom - nyob rau hauv cov ntaub ntawv no, nws yog tsim nyog los yuav thrust rings ntawm kho loj.
Nws yog ib qho tsim nyog los xaiv ib nrab-ntiv nplhaib tshiab ntawm tib hom thiab cov lej catalog raws li cov qub.Nws yog ib qho tseem ceeb uas lawv ua raws li cov installation qhov ntev, thiab muaj cov txheej txheem tiv thaiv kev sib txhuam.Tshwj xeeb tshaj yog qhov kawg tshwm sim yog ib qho tseem ceeb rau motors nyob rau hauv uas ib nrab rings nrog sib txawv los tiv thaiv coatings yog pib ntsia.Piv txwv li, nyob rau hauv ntau lub cav VAZ, lub rear semi-ntiv nplhaib yog ceramic-hlau, thiab pem hauv ntej yog steel-aluminium, thiab lawv tsis hloov pauv.
Kev hloov cov nplhaib ib nrab yuav tsum tau ua raws li cov lus qhia rau kev saib xyuas thiab kho lub tsheb.Ntawm qee lub cav, nws yog ib qho tsim nyog yuav tsum tau tshem lub pallet thiab rhuav tshem lub npog qis ntawm cov kabmob thrust, ntawm lwm cov motors yuav tsum tau ua kom muaj kev cuam tshuam loj dua.Thaum txhim kho cov rings tshiab, nws yog ib qho tsim nyog yuav tsum tau saib xyuas lawv cov kev taw qhia - cov txheej txheem tiv thaiv kev sib txhuam (ntawm qhov grooves feem ntau yog muab) yuav tsum tau nruab rau ntawm lub puab tsaig crankshaft.
Nrog rau txoj kev xaiv thiab installation ntawm ib nrab-ntiv nplhaib, thrust bearings yuav xyuas kom meej kev ua si ntawm lub crankshaft thiab txhim khu kev qha kev khiav hauj lwm ntawm tag nrho cov cav.
Post lub sij hawm: Aug-21-2023