Qhov kev tshem tawm ntawm cov kabmob dov yog qhov siab tshaj plaws ntawm kev ua haujlwm uas tuav ib lub nplhaib nyob rau hauv qhov chaw thiab lwm qhov hauv radial lossis axial kev coj. Kev ua haujlwm siab tshaj plaws raws li cov kev taw qhia radial yog hu ua radial clearance, thiab qhov siab tshaj plaws ua haujlwm raws li axial kev taw qhia yog hu ua axial clearance. Feem ntau hais lus, qhov loj dua qhov radial clearance, qhov loj dua qhov axial clearance, thiab vice versa. Raws li lub xeev ntawm cov kabmob, kev tshem tawm tuaj yeem muab faib ua peb hom hauv qab no:
I. Thawj clearance
Dawb clearance ua ntej bearing installation. Tus thawj clearance yog txiav txim los ntawm cov chaw tsim tshuaj paus kev ua thiab sib dhos.
2. Nruab qhov kev tshem tawm
Kuj hu ua haum clearance, nws yog qhov clearance thaum lub bearing thiab ncej thiab bearing vaj tse twb ntsia tab sis tseem tsis tau ua hauj lwm. Lub mounting clearance yog me dua qhov qub clearance vim cuam tshuam mounting, xws li nce lub nplhaib puab, txo lub nplhaib sab nrauv, los yog ob qho tib si.
3. Kev tshem tawm haujlwm
Thaum cov kabmob nyob rau hauv kev ua haujlwm, lub nplhaib puab kub nce mus rau qhov siab tshaj plaws thiab thermal expansion mus rau qhov siab tshaj plaws, kom cov kabmob clearance txo. Nyob rau tib lub sijhawm, vim muaj kev cuam tshuam ntawm kev thauj khoom, elastic deformation tshwm sim ntawm qhov chaw sib cuag ntawm lub cev dov thiab txoj kev sib tw, uas ua rau kom cov kabmob clearance. Txawm hais tias lub bearing ua hauj lwm clearance loj dua los yog me dua lub mounting clearance nyob ntawm qhov sib xyaw ua ke ntawm ob yam no.
Qee qhov dov bearings tsis tuaj yeem hloov kho lossis disassembled. Lawv muaj nyob rau hauv rau tus qauv, ntawm 0000 txog 5000; Muaj hom 6000 (angular contact bearings) thiab hom 1000, Hom 2000 thiab Hom 3000 nrog lub khob hliav qab hauv lub nplhaib puab. Lub mounting clearance ntawm cov hom dov bearings, tom qab hloov kho, yuav me dua qhov qub clearance. Tsis tas li ntawd, qee qhov bearings tuaj yeem raug tshem tawm, thiab kev tshem tawm tuaj yeem hloov kho. Muaj peb hom kabmob: Hom 7000 (tapered roller bearing), hom 8000 (thrust pob bearing) thiab hom 9000 (thrust roller bearing). Yog tsis muaj thawj clearance nyob rau hauv peb hom bearings. Rau hom 6000 thiab hom 7000 dov bearings, radial clearance txo thiab axial clearance kuj txo, thiab vice versa, thaum rau hom 8000 thiab hom 9000 dov bearings, tsuas yog lub axial clearance yog qhov tseem ceeb ntawm cov tswv yim.
Tsim nyog mounting clearance pab txhawb kev ua haujlwm ntawm cov kabmob dov. Qhov kev tshem tawm me me dhau, qhov kub ntawm cov kabmob dov nce, tsis tuaj yeem ua haujlwm ib txwm, kom lub cev dov tau daig; Kev tshem tawm ntau dhau, cov khoom siv vibration, dov bearing suab nrov.
Txoj kev kuaj xyuas radial clearance yog raws li nram no:
I. Kev xav
1. Nrog tes rotating bearing, lub bearings yuav tsum du thiab saj zawg zog tsis sticking thiab astringency.
2. Co lub nplhaib sab nraud ntawm cov kabmob los ntawm tes. Txawm hais tias qhov radial clearance tsuas yog 0.01mm, axial txav ntawm qhov taw tes saum toj kawg nkaus ntawm cov kabmob yog 0.10-0.15mm. Txoj kev no yog siv rau ib kab centripetal pob bearings.
Txoj kev ntsuas
1. Tshawb xyuas thiab paub meej tias qhov siab tshaj plaws ntawm qhov kev sib tw ntawm cov kabmob dov nrog lub cev muaj zog, ntxig lub cev ntawm lub cev dov 180 ° thiab lub nplhaib sab nraud (sab hauv), thiab qhov tsim nyog thickness ntawm tus feeler yog radial clearance ntawm cov kabmob. Txoj kev no yog dav siv nyob rau hauv tus kheej-aligning bearings thiab cylindrical roller bearings.
2, xyuas nrog lub dial taw qhia, ua ntej teem lub dial taw qhia rau xoom, ces nqa lub dov bearing txheej nplhaib, lub dial qhia nyeem ntawv yog lub radial clearance ntawm cov kabmob.
Txoj kev tshuaj xyuas ntawm axial clearance yog raws li nram no:
1. Txoj kev xav
Tshawb xyuas axial clearance ntawm dov bearing nrog koj tus ntiv tes. Txoj kev no yuav tsum tau siv thaum lub qhov kawg ntawm qhov kawg raug nthuav tawm. Thaum cov ncej kawg raug kaw los yog tsis tuaj yeem kuaj xyuas los ntawm cov ntiv tes rau lwm yam laj thawj, xyuas seb lub ncej puas hloov tau hauv kev sib hloov.
2. Kev ntsuas ntsuas
(1) Tshawb xyuas nrog kev xav. Txoj kev ua haujlwm yog tib yam li kev kuaj xyuas radial clearance nrog feeler, tab sis axial clearance yuav tsum yog.
C = lambda/sin (2 beta)
Qhov twg c - axial clearance, mm;
- Ntsuas thickness, hli;
-- Bearing cone Angle, (°).
(2) Kos nrog lub dial taw qhia. Thaum lub crowbar yog siv los channel lub txav ncej mus rau ob txoj haujlwm huab, qhov sib txawv ntawm dial qhia nyeem ntawv yog qhov axial clearance ntawm cov kabmob. Txawm li cas los xij, lub zog siv rau lub crowbar yuav tsum tsis txhob loj dhau, txwv tsis pub lub plhaub yuav muaj elastic deformation, txawm tias qhov deformation me me, nws yuav cuam tshuam qhov tseeb ntawm qhov ntsuas axial clearance.
Post lub sij hawm: Jul-20-2020