Kev xaiv qhov chaw thiab kev teeb tsa ntawm cov kabmob yog ib feem tseem ceeb heev ntawm kev tsim lub cev muaj zog. Yog tias koj tsis paub txog kev ua haujlwm ntawm cov kabmob thiab xaiv ib qho kev daws teeb meem, nws yuav yog qhov tsim tsis ua tiav. Cov xwm txheej ua haujlwm sib txawv yuav muaj cov kev cai sib txawv rau cov kabmob. Ms. Shen ntseeg tias nws yog qhov tsim nyog los kawm thiab sib tham txog qee qhov kev paub txog cov kabmob.
Kev sib raug zoo ntawm ntau qhov kev sib txawv ntawm cov pob sib sib zog nqus
Qhov ua haujlwm clearance ntawm bearings yog xam raws li cov mis
(1). Qhov kev xaiv ntawm kev ua haujlwm ntawm cov bearings yog qhov ntev tshaj plaws thaum cov bearing ua haujlwm ruaj khov thiab muaj qhov ua haujlwm tsis zoo me ntsis.
△=△0-Δfi-δf0-δt+δw ………………… (1)
Hauv cov mis (1):
△0——Kev tshem tawm thawj zaug
Δfi——Kev txo qis qhov sib txawv los ntawm qhov sib haum ntawm lub nplhaib sab hauv thiab lub qag
δf0—— Kev txo qis qhov sib txawv los ntawm qhov sib haum ntawm lub nplhaib sab nraud thiab lub tsev
δt —— Kev txo qis qhov tshwm sim los ntawm qhov sib txawv ntawm qhov kub thiab txias ntawm cov nplhaib sab hauv thiab sab nraud
δw——Kev nce ntawm qhov chaw tshwm sim los ntawm kev thauj khoom
Txog cov roj bearing
Lub hom phiaj ntawm kev siv lubrication rau cov kabmob yog cais cov khoom dov thiab qhov chaw dov nrog cov roj nyias nyias, thiab tsim cov roj nplaum sib npaug ntawm qhov chaw dov thaum lub sijhawm ua haujlwm, yog li txo qhov kev sib txhuam sab hauv ntawm cov kabmob thiab kev hnav ntawm txhua qhov khoom thiab tiv thaiv kev sintering. Kev siv lubrication zoo yog qhov tsim nyog rau kev ua haujlwm ntawm cov kabmob. Kev tshuaj xyuas cov laj thawj ntawm kev puas tsuaj rau cov kabmob qhia tau hais tias kwv yees li 40% ntawm kev puas tsuaj rau cov kabmob yog cuam tshuam nrog kev siv lubrication tsis zoo. Cov txheej txheem kev siv lubrication tau muab faib ua roj nplaum thiab roj nplaum.
● Kev siv roj nplua nyeem muaj qhov zoo uas nws tsis tas yuav rov ua kom ntev tom qab sau roj ib zaug, thiab cov qauv kaw yooj yim heev, yog li nws siv dav. Roj nplua nyeem yog cov roj nplua nyeem ib nrab khov uas sib xyaw nrog roj nplua nyeem ua cov roj hauv paus thiab cov khoom khov uas muaj zog lipophilicity. Ntau yam khoom ntxiv kuj raug ntxiv los txhim kho qee yam khoom.
● Lubrication roj, feem ntau suav nrog lubrication roj circulating, lubrication jet, thiab lubrication roj mist. Cov roj lubricating ntawm cov bearing feem ntau yog ua los ntawm cov roj refined mineral uas muaj kev ruaj khov zoo oxidation thiab tiv taus xeb thiab muaj zog roj zaj duab xis siab, tab sis ntau yam roj synthetic kuj siv tau ntau.
Kev teeb tsa lub cev muaj zog
Qhov kev teeb tsa ntawm cov kabmob ntawm qhov tig ntawm lub cev muaj zog (xws li lub ncej tseem ceeb) feem ntau xav tau ob pawg ntawm cov kabmob los txhawb thiab radially thiab axially nrhiav qhov chaw ntawm qhov tig piv rau qhov ruaj khov ntawm lub tshuab (xws li lub rooj zaum bearing). Nyob ntawm cov xwm txheej ntawm daim ntawv thov, xws li kev thauj khoom, qhov tseeb ntawm kev tig thiab cov nqi xav tau, qhov kev teeb tsa ntawm cov kabmob yuav suav nrog cov hauv qab no:
● Kev teeb tsa ruaj khov thiab ntab
● Kev teeb tsa ua ntej rau cov kabmob (kho rau ob qho kawg)
● Kev teeb tsa zoo "Floating" (floating ntawm ob qho kawg)
Kev teeb tsa ruaj khov thiab ntab
Cov kabmob kawg ruaj khov no muaj kev txhawb nqa radial ntawm ib kawg ntawm tus ncej thiab nyob rau hauv ob qho kev taw qhia. Yog li ntawd, cov kabmob kawg ruaj khov yuav tsum tau kho rau ob qho tib si tus ncej thiab lub rooj zaum bearing. Cov kabmob tsim nyog rau kev siv ntawm qhov kawg ruaj khov yog cov kabmob radial uas tuaj yeem tiv taus cov khoom sib xyaw ua ke, xws li cov kabmob sib sib zog nqus pob, ob kab lossis khub ib kab angular contact pob bearings, cov kabmob pob self-aligning, spherical thiab roller bearings lossis cov kabmob tapered roller bearings sib phim. Cov kabmob radial uas tsuas tuaj yeem dais cov khoom radial ntshiab, xws li cov kabmob cylindrical roller bearings nrog ib lub nplhaib tsis muaj flange, kuj tseem tuaj yeem siv ntawm qhov kawg ruaj khov thaum siv hauv pawg nrog lwm hom bearing (xws li cov kabmob sib sib zog nqus pob, plaub-taw tes contact pob bearings lossis ob-taw tes thrust bearings, thiab lwm yam). Hauv qhov kev teeb tsa no, lwm cov kabmob tsuas yog siv rau axial positioning hauv ob qho kev taw qhia, thiab qee qhov radial degree ntawm kev ywj pheej yuav tsum tau tso rau hauv lub rooj zaum bearing (uas yog, qhov sib txawv yuav tsum tau tseg nrog lub rooj zaum bearing).
Lub floating kawg bearing tsuas yog txhawb nqa lub ncej radially ntawm qhov kawg thiab yuav tsum tso cai rau qee qhov axial displacement ntawm lub ncej kom tsis muaj kev sib koom ua ke ntawm cov bearings. Piv txwv li, thaum lub bearing nthuav dav vim cua sov, axial displacement tuaj yeem ua tiav hauv qee hom bearings. Axial displacement tuaj yeem tshwm sim ntawm ib qho ntawm cov nplhaib bearing thiab qhov nws txuas nrog, zoo dua ntawm lub nplhaib sab nraud thiab lub rooj zaum bearing.
Muaj ntau ntau yam kev sib xyaw ua ke ntawm cov qauv bearing rau cov kawg ruaj khov thiab cov kawg ntab. Cov hauv qab no yog qee qhov kev sib xyaw ua ke uas siv ntau dua. Rau cov qauv bearing ruaj khov, kev sib xyaw ua ke uas tso cai rau kev hloov pauv axial kom ua tiav hauv cov bearing yuav tsum tau siv, xws li:
(1) Lub pob sib sib zog nqus / lub cylindrical roller bearing
(2) Ob kab angular contact pob bearing / cylindrical roller bearing
(3) Ib kab tapered roller shaft/cylindrical roller bearing ua ke
(4) NUP cylindrical roller bearing / NU cylindrical roller bearing
(5) NU cylindrical roller bearing + plaub-point contact ball bearing / NU cylindrical roller bearing
Rau cov kev sib xyaw ua ke saum toj no, qhov yuam kev ntawm lub kaum sab xis ntawm tus ncej thiab lub rooj zaum ntawm lub cev yuav tsum tau txo qis. Yog tias daim ntawv thov tsis tso cai, nws raug pom zoo kom siv cov kev sib xyaw ua ke ntawm cov kabmob uas sib dhos tus kheej uas tuaj yeem tiv taus qhov yuam kev loj dua, xws li:
(1) Cov kabmob pob uas sib dhos ua ke / CARB toroidal roller bearing
(2) Lub log kheej kheej/CARB toroidal roller bearing
Cov kev teeb tsa no tuaj yeem tiv taus qee qhov yuam kev ntawm lub kaum sab xis thiab kev hloov pauv axial thiab tuaj yeem zam kev tsim cov zog axial sab hauv hauv lub kaw lus ncej.
Lub sijhawm tshaj tawm: Lub Yim Hli-16-2024