Muaj nuj nqi ntawm Bearings
Choj bearings yog siv los hloov cov quab yuam los ntawm lub superstructure mus rau lub substructure, tso cai rau cov nram qab no hom kev txav ntawm superstructure: txhais lus txav;yog kev hloov chaw nyob rau hauv ntsug thiab kab rov tav cov lus qhia vim nyob rau hauv lub dav hlau los yog tawm ntawm lub dav hlau rog zoo li cua thiab nws tus kheej qhov hnyav.Rotational txav;ua rau vim lub sijhawm.Kom txog rau thaum nruab nrab ntawm lub xyoo pua no, cov bearings siv muaj cov nram qab no hom:
· Pin
· Roller
· Rocker
· Hlau zawv zawg bearings
Ib tus pin bearing yog ib hom ntawm cov kabmob ruaj khov uas haum rau kev sib hloov los ntawm kev siv cov hlau.Kev txhais lus txav tsis raug tso cai.Tus pin nyob rau sab saum toj yog tsim los ntawm sab sauv thiab sab qis semicircularly recessed nto nrog ib tug khoom ncig tus pin muab tso rau ntawm.Feem ntau, muaj lub kaus mom ntawm ob qho kawg ntawm tus pin kom tus pin los ntawm zawv zawg ntawm lub rooj zaum thiab tiv thaiv cov khoom thauj yog tias xav tau.Lub phaj sab sauv txuas nrog lub phaj ib leeg los ntawm bolting lossis vuam.Lub phaj qis qis zaum ntawm lub phaj masonry.Kev hloov pauv tau tso cai.Cov kev txav ntawm sab nraud thiab kev txhais lus raug txwv.
Cov Menyuam Bearings
Rau kev sib cais daim ntawv thov nyob rau hauv machinery kev rho tawm, cov menyuam thiab pob bearing yog siv.Nws suav nrog cylindrical rollers thiab pob.Nws yog txaus los tiv thaiv kev pab cuam txav thiab damping nyob ntawm cov khoom siv.
AASHTO xav kom cov chais nthuav dav yuav tsum tau nruab nrog "cov kab tuav ntau heev" thiab raug coj los ntawm kev sib tw los yog lwm txoj hauv kev los tiv thaiv kev txav mus los, skewing, thiab creeping (AASHTO 10.29.3).
Ib qho teeb meem dav dav rau hom kabmob no yog nws nyiam khaws cov plua plav thiab khib nyiab.Tso cai rau kev txav mus ntev.Lateral Movements thiab Rotations yog txwv.
Rocker Hom Bearing
Lub rocker bearing yog ib hom kev nthuav dav uas tuaj yeem muaj ntau yam.Nws feem ntau muaj tus pin nyob rau sab saum toj uas pab txhawb kev sib hloov, thiab ib qho chaw nkhaus hauv qab uas haum rau kev txhais lus txav.Rocker thiab pin bearings feem ntau yog siv nyob rau hauv steel choj.
Sliding Bearings
Ib qho zawv zawg kabmob siv ib lub dav hlau hlau phaj zawv zawg tiv thaiv lwm tus kom haum rau kev txhais lus.Qhov zawv zawg bearing nto tsim muaj kev sib txhuam quab yuam uas yog siv rau lub superstructure, substructure, thiab bearing nws tus kheej.Txhawm rau txo qhov kev sib txhuam quab yuam, PTFE (polytetrafluoroethylene) feem ntau yog siv los ua cov khoom siv zawv zawg.PTFE qee zaum hu ua Teflon, muaj npe tom qab siv ntau hom PTFE.Sliding Bearings siv ib leeg lossis ntau dua siv los ua ib feem ntawm lwm hom bearings.Ntshiab zawv zawg bearings tsuas yog siv tau thaum lub rotations tshwm sim los ntawm deflection ntawm cov kev txhawb nqa yog negligible.Lawv yog li txwv rau qhov ntev ntawm 15 m lossis tsawg dua los ntawm ASHTTO [10.29.1.1]
Cov tshuab zawv zawg nrog lub coefficient ntawm kev sib txhuam ua ntej tuaj yeem muab kev sib cais los ntawm kev txwv kev nrawm thiab lub zog uas hloov mus.Sliders muaj peev xwm muab kev tiv thaiv nyob rau hauv cov kev pab cuam, yooj thiab quab yuam-tsav los ntawm zawv zawg zog.Cov duab puab los yog spherical sliders feem ntau nyiam tshaj cov zawv zawg zawv zawg vim lawv cov nyhuv rov qab.Flat sliders muab tsis muaj zog rov qab los thiab muaj peev xwm hloov chaw nrog kev poob siab.
Knuckle Pinned Bearing
Nws yog daim ntawv tshwj xeeb ntawm Cov Menyuam Bearing uas Knuckle tus pin yog muab rau kev sib tsoo yooj yim.Ib tus pin knuckle yog muab tso rau ntawm sab saum toj thiab hauv qab casting.Sab saum toj casting yog txuas nrog Choj superstructure, thaum lub hauv qab casting rests ntawm ib tug series ntawm rollers.Knuckle pin bearing tuaj yeem ua raws li kev txav loj thiab tuaj yeem ua kom zawv zawg nrog rau kev sib hloov
Lub lauj kaub Bearings
POT BEARING muaj ib lub tog raj kheej kheej kheej, los yog lub lauj kaub, ntawm ib txoj kab ntsug nrog lub neoprene disk uas yog me ntsis thinner dua lub tog raj kheej thiab haum nruj rau hauv.Lub piston steel haum rau hauv lub tog raj kheej thiab dais ntawm neoprene.Lub nplhaib tooj dag yog siv los kaw cov roj hmab ntawm lub piston thiab lub lauj kaub.Cov roj hmab coj zoo li cov kua nplaum uas ntws raws li kev sib hloov yuav tshwm sim.Txij li thaum cov kabmob yuav tsis tiv thaiv lub sijhawm khoov, nws yuav tsum tau muab nrog lub rooj zaum txuas ntxiv.
Plain Elastomeric Bearings (Qhia PPT)
Laminated Elastomeric Bearings
Bearings tsim los ntawm kab rov tav txheej ntawm hluavtaws los yog ntuj roj hmab nyob rau hauv nyias txheej khi ntawm steel daim hlau.Cov bearings no muaj peev xwm txhawb nqa siab ntsug loads nrog me me deformations.Cov bearings no hloov tau nyob rau hauv lateral loads.Hlau daim hlau tiv thaiv cov roj hmab txheej los ntawm bulging.Lead cores yog muab los ua kom muaj peev xwm ua kom muaj zog ntxiv vim tias cov kabmob elastomeric dawb tsis muab qhov tseem ceeb damping.Lawv feem ntau yog mos nyob rau hauv kab rov tav kev taw qhia thiab nyuaj nyob rau hauv ntsug kev taw qhia.
Nws muaj ib tug laminated elastomeric bearing nruab nrog ib lub tog raj kheej txhuas nyob rau hauv nruab nrab ntawm cov kabmob.Kev ua haujlwm ntawm cov roj hmab-steel laminated feem ntawm cov kabmob yog nqa qhov hnyav ntawm cov qauv thiab muab cov khoom elasticity tom qab.Cov tub ntxhais hlau lead yog tsim los deform plastically, yog li muab damping zog dissipation.Lead roj hmab bearings yog siv nyob rau hauv seismically active cheeb tsam vim lawv kev ua tau zoo nyob rau hauv av qeeg loads.
Post lub sij hawm: Nov-22-2022