Qhov tseeb clearance ntawm lublub cev muaj zogntawm kev ua haujlwm muaj feem xyuam rau cov kabmob load, ceev, lubrication, kub nce, vibration, tsim qauv thiab nto roughness ntawm lub rooj sib txuam.Thaum xaiv, nws yuav tsum raug xaiv raws li qhov xwm txheej tshwj xeeb.Qhov kev tshem tawm tom qab rho tawm qhov nthuav tawm lossis kev cog lus ntawm lub nplhaib vim muaj kev cuam tshuam zoo thaum cov kabmob raug ntsia rau ntawm ncej lossis hauv vaj tsev yog hu ua "installation clearance" los ntawm theoretical clearance.Qhov kev tshem tawm tau los ntawm kev ntxiv thiab rho tawm qhov sib txawv ntawm qhov sib txawv vim qhov sib txawv ntawm qhov kub thiab txias hauv cov kabmob los ntawm kev tshem tawm qhov kev tshem tawm yog hu ua "kev tshem tawm zoo".Kev tshem tawm thaum cov kabmob raug ntsia rau ntawm lub tshuab nyob rau hauv ib qho kev thauj khoom thiab tig, uas yog, kev tshem tawm tom qab kev tshem tawm zoo ntxiv rau cov elastic deformation los ntawm cov kabmob load hu ua "ua haujlwm clearance".
Raws li pom nyob rau hauv daim duab, thaum kev ua hauj lwm clearance yog me ntsis tsis zoo, lub qaug zog lub neej ntawm cov kabmob yog ntev tshaj plaws, tab sis lub neej qaug zog txo qis heev nrog rau qhov nce ntawm qhov tsis zoo clearance.Yog li ntawd, thaum xaiv lub bearing clearance, nws yog feem ntau pom zoo kom ua rau lub chaw ua hauj lwm clearance zero los yog me ntsis zoo.Thaum xaiv bearing clearance, cov nram qab no yuav tsum tau xav txog: 1. Cov kev ua hauj lwm ntawm cov kabmob, xws li load, kub, ceev, vibration, thiab lwm yam.;2. Cov kev xav tau ntawm kev ua haujlwm ntawm cov kabmob (rotational raug, kev sib txhuam torque, kev vibration, suab nrov);3. Thaum cov kabmob, cov ncej thiab lub qhov nyob hauv qhov cuam tshuam, cov kabmob tshem tawm raug txo;4. Thaum cov kabmob ua haujlwm, qhov kub ntawm qhov sib txawv ntawm cov nplhaib sab hauv thiab sab nrauv ua rau cov kabmob clearance txo;5. Vim qhov sib txawv expansion coefficients ntawm cov ncej thiab cov khoom vaj tse, ua rau cov kabmob clearance txo los yog nce.
Raws li kev paub dhau los, kev ua haujlwm zoo tshaj plaws rau kev tshem tawm pob bearings yog nyob ze rau xoom, thiab me me ntawm kev ua haujlwm tshem tawm yuav tsum tau khaws cia rau cov menyuam bearings.Hauv cov khoom uas xav tau kev txhawb nqa zoo, cov kabmob raug tso cai kom muaj qee yam ntawm preload.Raws li kev ua haujlwm ib txwm muaj, pawg thawj coj yuav tsum nyiam, kom cov kabmob tuaj yeem tau txais kev ua haujlwm kom raug.Thaum cov pab pawg hauv paus tsis tuaj yeem ua tau raws li qhov yuav tsum tau siv, cov pab pawg pab cuam tshem tawm yuav tsum raug xaiv.Cov pab pawg loj tshem tawm yog tsim nyog rau kev cuam tshuam haum ntawm cov kabmob thiab cov ncej thiab lub tsev bore.Cov pab pawg me me tshem tawm yog tsim nyog rau lub sijhawm uas xav tau kev sib hloov siab, kev tswj nruj ntawm axial hloov chaw ntawm lub tsev, thiab txo qis kev co thiab suab nrov.Tsis tas li ntawd, thaum lub rigidity ntawm cov kabmob yuav tsum tau txhim kho los yog lub suab nrov yuav tsum tau txo, kev ua hauj lwm clearance yuav tsum coj ib tug ntxiv tsis zoo tus nqi, thiab thaum lub bearing kub nce sharply, kev ua hauj lwm clearance yuav tsum coj ib tug ntxiv zoo nqi, thiab lwm yam. ., thiab ib qho kev ntsuam xyuas tshwj xeeb yuav tsum tau ua raws li kev ua haujlwm..
Txij li thaum kev ua haujlwm clearance yog ze ze rau lub neej, kub nce, kev co thiab suab nrov ntawm cov kabmob, kev tswj ntawm sab hauv clearance ntawm cov kabmob yog ib qho tseem ceeb heev.Lub cev muaj zog bearings yuav tsum muaj kev tshem tawm sab hauv kom muaj kev ua haujlwm zoo.Thawj qhov kev tshem tawm ntawm cov kabmob yog qhov qhia tau tseem ceeb heev.Yog li ntawd, ua ntej lub bearing yog sib sau ua ke, ib tug feeler gauge yuav tsum tau siv los xyuas cov thawj clearance, thiab nyob rau tib lub sij hawm, kev sib cuag ntawm lub nplhaib puab thiab armature ncej yuav tsum tau ntsuas los xyuas kom meej nws txhim khu kev qha kev sib cuag.Tom qab lub cev muaj zog sib sau ua ke, cov kabmob clearance yog qhov sib txuam clearance.Yog tias qhov kev tshem tawm me me dhau ntawm lub sijhawm no, nws yuav ua rau cov kabmob overheat, ua rau lub nplhaib sab hauv nthuav dav, ua kom qhov kev tshem tawm me me thiab me me, thiab thaum kawg ua rau cov kabmob kub hnyiab;Yog tias nws loj dhau lawm, cov yob yuav tsis sib npaug, ua rau muaj kev vibration ntxiv, uas yooj yim rau kev puas tsuaj rau cov kabmob.Yog li ntawd, tom qab tag nrho kev sib dhos ntawm lub cev muaj zog, lub ntsuas qhov ntsuas yuav tsum tau siv los ntsuas qhov kev tshem tawm ntawm cov kabmob tom qab sib dhos.Yog tias qhov kev tshem tawm pom tias tsis tsim nyog, nws yuav tsum tau muab tshem tawm thiab kho.Tus thawj radial clearance ntawm ZWZ bearings yog tag nrho nyob rau hauv txoj kab nrog GB4604.Radial clearance qhov tseem ceeb siv rau unmounted thiab unloaded bearings.Cov kabmob loj dua lossis me dua tus qauv tus nqi ntawm kev tshem tawm kuj tuaj yeem tsim tau raws li cov neeg siv khoom xav tau.