Nyob rau hauv lub log tsheb feem ntau, lub log yog tuav los ntawm lub hub uas so ntawm lub qag los ntawm cov bearings tshwj xeeb.Nyeem tag nrho txog hub bearings, lawv cov hom uas twb muaj lawm, tsim qauv, cov yam ntxwv ntawm kev ua haujlwm thiab kev siv tau, nrog rau kev xaiv kom raug thiab hloov ntawm cov khoom no hauv kab lus.
Lub hub bearing yog dab tsi?
Hub bearing (wheel bearing) - undercarriage assembly (log suspension) ntawm lub log tsheb;Rolling bearing ntawm ib qho kev tsim lossis lwm qhov, uas muab kev sib txuas, kev sib dhos thiab kev sib hloov dawb ntawm lub log hub ntawm lub qag.
Lub log bearing ua ntau yam haujlwm:
● Ua kom muaj kev sib hloov ntawm lub hub ntawm lub qag (trunnion) nrog kev txo qis ntawm kev sib txhuam quab yuam;
● Kev sib txuas ntawm lub hub nrog lub qag (trunnion) los yog lub hauv caug knuckle;
● Nruab nrab ntawm lub hub ntawm lub axis;
● Kev faib tawm ntawm radial thiab lateral zog thiab torques kis tau los ntawm lub log los ntawm lub hub mus rau lub qag thiab ncua kev kawm ntawv ntawm lub tsheb, thiab nyob rau hauv lub opposite direction;
● Unloading lub qag shafts ntawm tsav qag - lub log tsis yog tuav ntawm lub qag ncej, tab sis so ntawm lub kauj khawm, trunnion los yog qag nqaj.
Log bearings yog siv los mount lub hubs ntawm tag nrho cov log tsheb thiab tsheb thauj khoom, tsheb npav, tsheb laij teb thiab lwm yam khoom siv, steered log ntawm tsheb laij teb ntawm me me traction chav kawm ntawv (feem ntau nyob rau hauv lawv lub rear log yog rigidly txuas nrog lub qag shafts), raws li zoo raws li nyob rau hauv lub cev muaj zog-log ntawm cov tsheb nrog electromechanical kis tau tus mob.Lub hub bearing yog qhov tseem ceeb tshaj plaws rau lub chassis ntawm lub tsheb, yog li thaum muaj kev ua haujlwm tsis zoo, nws yuav tsum tau hloov.Tab sis ua ntej ua kev yuav khoom ntawm cov kabmob, nws yuav tsum nkag siab txog nws hom, tsim thiab nta.
Hom, tsim thiab nta ntawm hub bearings
Rolling bearings yog siv los txhim kho cov hubs ntawm lub axles, uas, nrog lub zog siab thiab kev ntseeg siab, muab qhov siab tshaj plaws ntawm kev sib txhuam rog.Feem ntau, cov qauv tsim ntawm cov kabmob yog qhov yooj yim: cov no yog ob lub nplhaib - sab nraud thiab sab hauv - nruab nrab ntawm qhov uas muaj cov txheej txheem dov nyob rau hauv lub tawb (ib lub mesh ua los ntawm cov hlau lossis yas uas ua kom qhov tseeb ntawm cov khoom dov. ).Qhov chaw sab hauv yog ntim nrog roj, qhov khoob ntawm cov nplhaib raug kaw nrog cov npog kom tsis txhob muaj roj to thiab paug ntawm cov kabmob sab hauv.Kev tsim ntawm ntau hom bearings yuav txawv, raws li tau piav qhia hauv qab no.
Lub log bearings raug cais raws li tus qauv tsim thiab dov cov ntsiab lus siv, nrog rau cov kev taw qhia ntawm qhov pom kev.
Raws li lub cev ntawm kev sib hloov siv, bearings yog:
● Pob - dov tshwm sim ntawm cov pob steel;
● Roller - dov yog nqa tawm ntawm conical rollers.
Nyob rau tib lub sijhawm, raws li qhov chaw ntawm cov khoom dov, bearings tau muab faib ua ob pawg:
● Ib kab;
● Ob kab.
Nyob rau hauv thawj rooj plaub, muaj ib kab ntawm cov pob los yog rollers ntawm lub nplhaib, nyob rau hauv lub thib ob - ob kab txhua.
Raws li cov kev taw qhia ib txwm muaj rau lawv, hub bearings yog:
● Radial-thrust;
● Radial-thrust self-aligning.
Angular contact bearings nqus cov rog coj ob qho tib si hla lub axis (nrog lub vojvoog) thiab nrog nws.Qhov no ua kom lub cev ua haujlwm ntawm cov kabmob, tsis hais qhov xwm txheej ntawm kev txav ntawm lub log - txawm hais tias nws yog kev vibrations hauv lub dav hlau ntsug (thaum tsav tsheb ntawm txoj kev tsis sib xws), lossis kev sib txawv ntawm lub log los ntawm lub axis longitudinal (tig ntawm lub kauj. log, lateral loads ntawm lub log thaum kov yeej radii los yog thaum tsav tsheb nrog txoj kab nqes, sab cuam tshuam rau lub log, thiab lwm yam).
Vim tus tsim, tus kheej-aligning bearings them rau ib co misalignment ntawm lub qag thiab hub, txo qhov kev siv ntawm hnav ntawm qhov chaw.
Structurely, cov bearings ntawm hom tau tham saum toj no txawv.
Ib kab tapered angular contact bearings.Lawv muaj ob lub nplhaib, ntawm cov conical rollers yog sandwiched, sib cais los ntawm ib tug separator.Qhov chaw sab hauv ntawm cov kabmob yog ntim nrog roj, nws tiv thaiv los ntawm clogging thiab to los ntawm txoj kev ntawm O-ring.Ib feem ntawm hom no yog tsis sib cais.
Ob chav kab angular hu rau pob bearings thiab nws tus kheej-aligning bearings.Lawv muaj ob lub nplhaib dav, nruab nrab ntawm ob kab ntawm cov npas yog staggered, sib cais los ntawm ib qho sib cais.Self-aligning bearings, vim qhov tshwj xeeb zoo ntawm lub puab nto ntawm lub rings, ua kom nws muaj peev xwm hloov cov kab ntawm cov khoom txheeb ze rau lub qag ntawm lub trunnion.Pa bearings ntawm hom no yog non-separable, nws tus kheej-aligning - yuav yog tsis-separable los yog collapsible.
Ob chav kab angular hu rau cov menyuam bearings.Lawv muaj cov qauv tsim zoo ib yam li yav dhau los.Feem ntau, cov conical rollers ntawm txhua kab muaj ib daim iav kev teeb tsa - ib feem ntawm cov yob sab nraud.Txoj hauj lwm no ua kom muaj kev sib faib ntawm cov khoom thauj thiab kev sib dhos ntawm qhov chaw.Bearings ntawm hom no yog tsis sib cais.
Thaum kawg, lub log bearings tau muab faib ua ob pawg raws li lawv tsim:
● Ib leeg bearings;
● Cov kabmob sib xyaw ua ke rau hauv ib chav tsev nrog lub hub.
Hub nrog kev sib xyaw ua ke ob-kab pob nws tus kheej-aligning bearing
Thawj hom yog cov pa bearings, uas tuaj yeem ntsia tau thiab dismantled yam tsis tau hloov lwm qhov mating.Hom thib ob yog bearings kev koom ua ke rau hauv lub log hub, yog li lawv tsis tuaj yeem hloov tau nyias.
Installation qhov chaw thiab applicability ntawm log bearings
Hub bearings tau muab faib ua ntau pawg raws li qhov chaw teeb tsa thiab siv tau:
● Bearings ntawm hubs ntawm steered tsav log (pem hauv ntej-log tsav thiab tag nrho-log tsav tsheb);
● Bearings ntawm hubs ntawm steered tsav log (rov-log tsav tsheb);
● Cov kabmob ntawm cov hubs ntawm cov tsav tsheb tsis muaj zog (cov tsheb tsav pem hauv ntej, nrog rau cov tsheb plaub-qag nrog kev txhawb nqa tsis tsav tsheb);
● Cov kabmob ntawm cov hubs ntawm kev tsav tsheb tsis muaj kev tswj xyuas lub log (lub log tsav tsheb thiab txhua lub log tsav tsheb).
Qee hom bearings yog siv ntau hom axles thiab hubs:
● Nyob rau hauv lub hubs ntawm steered tsav log ntawm cov neeg nrog caij tsheb - ob-kab pob los yog cov menyuam bearings;
● Nyob rau hauv lub hubs ntawm uncontrolled tsav thiab tsav lub log ntawm cov neeg nrog caij tsheb - ob leeg-kab kab los yog cov menyuam bearings (nyob rau hauv feem ntau niaj hnub tsheb), thiab ob tapered bearings (nyob rau hauv ntau lub tsheb ntawm thaum ntxov tawm, nrog rau cov domestic);
● Nyob rau hauv lub hubs ntawm tag nrho cov log ntawm tag nrho cov-wheel tsav thiab rear-wheel tsav tsheb coj mus muag thiab tsheb thauj khoom, tsheb npav, tsheb laij teb thiab lwm yam khoom siv (nrog tsawg tsawg) muaj ob tapered bearings.
Mounting ntawm bearings yog ua nyob rau hauv ntau txoj kev.Nyob rau hauv lub rear log ntawm pem hauv ntej-log tsav neeg nrog caij tsheb, lub hub bearing yog muab tso rau ntawm lub trunnion, thiab lub hub nws tus kheej los yog lub nruas nres yog mounted rau nws lub nplhaib sab nraud.Cov khoom zoo sib xws ntawm cov tsheb thauj khoom thiab lub log tsav tsheb muaj tib yam tsim, tab sis ntawm no ob lub bearings tau nruab rau ntawm lub qag.Nyob rau hauv pem hauv ntej lub log ntawm pem hauv ntej-log tsav neeg nrog caij tsheb, cov kabmob yog mounted nyob rau hauv lub steering knuckle, thiab lub hub yog mounted nyob rau hauv lub puab nplhaib ntawm cov kabmob.
Tus tsim ntawm lub hub sib dhos ntawm lub rear log ntawm pem hauv ntej-log tsav tsheb
Cov teeb meem ntawm kev xaiv, hloov thiab kho ntawm lub hub bearing
Log bearings yog raug rau cov loads siab, yog li lawv yog nquag hnav thiab tawg.Nyob rau hauv cov ntaub ntawv uas muaj ib tug hum ntawm bearings, tuav lub tsheb deteriorates, muaj ib tug unavoidable backlash ntawm lub hubs thiab overheating ntawm lub hub sib dhos yog pom, cov bearings yuav tsum tau soj ntsuam.Yog tias lawv pom tias hnav lossis tawg, lawv yuav tsum tau hloov.
Cov kabmob ntawm cov hom thiab cov lej catalog uas tau teeb tsa yav dhau los yuav tsum raug xaiv los hloov.Nws tsis pom zoo kom hloov hom log bearing, vim qhov no tuaj yeem hloov cov yam ntxwv ntawm lub chassis unpredictably.Kev saib xyuas tshwj xeeb yuav tsum tau them rau kev xaiv ntawm tapered bearings ntsia hauv khub - qee zaum lawv tuaj yeem hloov pauv ntawm lawv tus kheej, lwm qhov tsuas yog hloov pauv tau.Thiab yog hais tias lub tsheb siv hubs nrog kev sib koom ua ke bearings, ces koj yuav tsum tau yuav tag nrho lub rooj sib txoos - ib qho kev hloov pauv ntawm bearings nyob rau hauv lawv yog tsis tau.
Lub log bearings yuav tsum tau hloov thiab kho raws li kev kho cov lus qhia rau lub tsheb no (tsheb npav, tsheb laij teb), thiab tom qab ntawd nws yog ib qho tsim nyog yuav tsum tau ua raws li kev saib xyuas kev ntsuas tau teev tseg hauv cov lus qhia rau cov koog no.Yog tias koj txiav txim siab ua qhov hloov pauv koj tus kheej, koj yuav tsum khaws cov cuab yeej tshwj xeeb rau kev nias thiab nias bearings, txwv tsis pub txoj haujlwm no yuav ua tsis tau.
Nrog rau kev xaiv kom raug thiab hloov pauv, nrog rau kev saib xyuas tsis tu ncua ntawm lub log bearings, lub chassis ntawm lub tsheb yuav ua haujlwm ib txwm nyob rau txhua qhov xwm txheej rau kaum tawm txhiab mais.
Post lub sij hawm: Aug-05-2023