Bearing system kev ntseeg tau yog ib txwm yog lub ntsiab lus kub hauv cov khoom siv hluav taws xob.Peb tau tham ntau yam hauv cov khoom dhau los, xws li cov teeb meem ntawm lub suab, cov teeb meem tam sim no, cov teeb meem cua sov thiab lwm yam.Lub hom phiaj ntawm tsab xov xwm no yog qhov clearance ntawm lub cev muaj zog bearing, uas yog hais tias, nyob rau hauv dab tsi clearance lub xeev cov bearing ua hauj lwm ntau tsim nyog.
Rau cov kabmob ua haujlwm zoo, radial clearance yog qhov tseem ceeb heev.Lub hauv paus ntsiab lus ntawm kev tswj hwm thiab kev txawj ntse: Kev ua haujlwm tshem tawm ntawm pob bearings yuav tsum yog xoom, lossis muaj me ntsis preload.Txawm li cas los xij, rau cov kabmob xws li cylindrical rollers thiab spherical rollers, qee qhov seem ntawm cov seem tshem tawm yuav tsum tau tso tseg thaum lub sijhawm ua haujlwm, txawm tias nws yog qhov kev tshem tawm me me.
Nyob ntawm daim ntawv thov, yuav tsum muaj qhov zoo lossis qhov tsis zoo ntawm kev khiav hauj lwm clearance nyob rau hauv cov kabmob.Feem ntau, kev ua haujlwm tshem tawm yuav tsum yog tus nqi zoo, uas yog, thaum cov kabmob khiav, muaj qee qhov seem tshem tawm.Ntawm qhov tod tes, muaj ntau daim ntawv thov uas xav tau kev khiav haujlwm tsis zoo - piv txwv li preload.
Lub preload feem ntau yog kho thaum lub sij hawm installation ntawm ambient kub (uas yog, ua tiav thaum lub sij hawm tsim thiab manufacturing theem ntawm lub cev muaj zog).Yog hais tias qhov kub ntawm lub ncej yog siab dua li ntawm lub rooj zaum bearing thaum lub sij hawm ua hauj lwm, lub preload yuav nce.
Thaum cov ncej yog rhuab thiab nthuav, txoj kab uas hla ntawm lub ncej yuav nce thiab nws kuj yuav elongate.Raws li kev cuam tshuam ntawm radial expansion, radial clearance ntawm bearing yuav txo, uas yog, lub preload yuav nce.Nyob rau hauv kev cuam tshuam ntawm axial expansion, lub preload yuav nce ntxiv, tab sis lub preload ntawm lub rov qab-rau-rov qab bearing kev npaj yuav raug txo.Nyob rau hauv ib tug rov qab-rau-rov qab bearing kev npaj, yog hais tias muaj ib tug muab kev ncua deb ntawm cov bearings thiab cov bearings thiab lwm yam Cheebtsam muaj tib coefficient ntawm thermal expansion, cov teebmeem ntawm radial expansion thiab axial expansion ntawm preload yuav tshem tawm ib leeg, yog li ntawd. preload yuav tsis tshwm sim ntau yam.
Lub luag haujlwm tseem ceeb tshaj plaws ntawm cov kabmob preload muaj xws li: txhim kho rigidity, txo cov suab nrov, txhim kho qhov tseeb ntawm kev taw qhia ncej, them nyiaj rau kev hnav thaum lub sijhawm ua haujlwm, ua kom lub neej ua haujlwm ntev, thiab txhim kho rigidity.Lub rigidity ntawm cov kabmob yog qhov sib piv ntawm lub zog ua haujlwm ntawm cov kabmob rau nws cov elastic deformation.Lub elastic deformation tshwm sim los ntawm lub load nyob rau hauv ib tug tej yam ntau yam ntawm preloaded bearing yog me dua li ntawm cov kabmob uas tsis muaj preload.
Qhov me me ntawm kev ua haujlwm tshem tawm ntawm cov kabmob, qhov zoo dua cov kev taw qhia ntawm cov ntsiab lus dov nyob rau hauv qhov chaw tsis muaj kev thauj khoom thiab qis dua lub suab nrov ntawm cov kabmob thaum lub sijhawm ua haujlwm.Raws li cov nyhuv ntawm preload, lub deflection ntawm ncej vim lub zog yuav raug txo qis, yog li qhov tseeb ntawm kev taw qhia ncej tuaj yeem txhim kho.Piv txwv li, pinion iav bearings thiab sib txawv iav bearings tuaj yeem ua ntej los txhim kho rigidity thiab precision ntawm kev taw qhia ncej, ua rau lub meshing ntawm cov iav ntau meej thiab ruaj khov, thiab txo qis zog ntxiv.Yog li ntawd yuav muaj suab nrov tsawg thaum lub sijhawm ua haujlwm, thiab lub zog tuaj yeem ua haujlwm ntev dua.Bearings yuav ua rau kom tshem tawm vim hnav thaum lub sijhawm ua haujlwm, uas tuaj yeem raug them los ntawm kev thauj khoom ua ntej.Hauv qee qhov kev siv, qhov preload ntawm cov kabmob tuaj yeem txhim kho kev ntseeg tau ntawm kev ua haujlwm thiab ua kom lub neej ntev.Kev tsim nyog preload tuaj yeem ua rau cov khoom xa tawm hauv cov kabmob ntau dua, yog li nws tuaj yeem ua haujlwm ntev dua.
Thaum txiav txim siab lub preload nyob rau hauv ib tug bearing kev npaj, nws yuav tsum tau muab sau tseg tias thaum lub preload ntau tshaj ib tug tej yam tsim nyog tus nqi, lub rigidity tsuas yog nce mus rau ib tug txwv.Vim tias kev sib txhuam thiab qhov tshwm sim ntawm cov cua sov yuav nce ntxiv, yog tias muaj kev thauj khoom ntxiv thiab nws ua haujlwm ntev, lub neej ua haujlwm ntawm cov kabmob yuav raug txo kom tsawg.
Tsis tas li ntawd, thaum kho lub preload nyob rau hauv lub bearing kev npaj, txawm tus nqi ntawm preload yog txiav txim los ntawm kev xam los yog kev, nws deviation yuav tsum tau tswj nyob rau hauv ib tug tej yam ntau yam.Piv txwv li, nyob rau hauv cov txheej txheem ntawm kev hloov ntawm tapered roller bearings, cov kabmob yuav tsum tau tig ob peb zaug kom ntseeg tau tias cov menyuam tsis skewed, thiab lub ntsej muag kawg ntawm cov menyuam yuav tsum muaj kev sib cuag zoo nrog cov tav ntawm lub nplhaib puab.Txwv tsis pub, cov txiaj ntsig tau txais hauv kev tshuaj xyuas lossis ntsuas tsis muaj tseeb, yog li qhov tseeb preload yuav tsawg dua li qhov xav tau.
Post lub sij hawm: May-10-2023