Cov kabmob yog lub hauv paus ntawm txhua qhov kev sib hloov ntawm koj lub tsheb kauj vab, tab sis yuav hloov cov hlau rau ceramic ua qhov txawv rau koj caij?
Txij li thaum cov neeg Iyiv thaum ub tau siv lub platform ntawm tsob ntoo trunks txav cov pob zeb loj heev rau hauv qhov chaw thaum tsim lub Pyramids, cov kabmob tau pab tib neeg kom txav mus los.
Ntxim qab kawg, thawj daim patent rau lub pob bearing yog rau lub tsheb kauj vab. Fab Kis kws kho tsheb Jules Suriray tau haum lawv rau lub tsheb kauj vab uas tau mus yeej lub ntiaj teb thawj lub nroog-rau-lub nroog kev sib tw tsheb kauj vab, Paris-Rouen, thaum lub Kaum Ib Hlis 1869. Niaj hnub no, cov kabmob tau paub zoo dua rau txhua tus neeg caij tsheb kauj vab raws li cov khoom uas poob sib nrug. thaum lub sij hawm disassembly thiab xav tau cov sij hawm ntawm tes thiab lub hauv caug nrhiav nyob rau hauv workbench los yog fridges mus retrieve.
History zaj lus qhia ib sab, bearings plays ib qho tseem ceeb nyob rau hauv yuav ua li cas lub tsheb kauj vab yuav txav li ntawd dawb do. Pedals, cranks, log, headsets, jockey log … yog hais tias nws tig, bearings yog nyob rau hauv nruab nrab ntawm nws, thiab tsis muaj lawv peb yuav nyuaj rau caij nyob qhov twg sai sai. Muaj ntau ntau hom kabmob, yog li nws tsim nyog ua ob peb lub ntsiab lus meej nyob rau theem no kom tshem tawm tsis meej pem.
Thaum peb xa mus rau 'cov kabmob', peb txhais tau tias yog ib qho khoom siv uas muaj tsib yam tseem ceeb: pob, foob, pob tawb, sib tw thiab roj. Lub tswv yim yog yooj yim - ob peb lub pob yog sandwiched ntawm ob qhov chaw concave (kev sib tw), tso cai rau lawv tig tawm tsam ib leeg (ib qho feem ntau yog tsau) nrog kev sib txhuam tsawg. Lub tawb thiab cov ntsaws ruaj ruaj tuav txhua yam nyob rau hauv qhov chaw thiab khaws cov av, thaum lub roj lubricates thiab tiv thaiv lub zog txav.
Cov ntawv thov tsheb kauj vab niaj hnub tam sim no nyiam 'cartridge bearings'. Cov chav kaw no muaj ntau yam txiaj ntsig dhau ntawm 'loo bearing' systems ntawm cov qub, uas yog feem ntau nyob rau hauv qis kawg, pheej yig dua Cheebtsam (txawm hais tias ib tug ob peb theem saum toj kawg nkaus qhov chaw tseem xaiv lo nrog lub xoob pob, khob thiab cone system vim rau nws finer adjustability). Cartridge bearings feem ntau xav tau kev saib xyuas tsawg dua, thiab thaum lawv ua tiav thaum kawg, nws feem ntau yuav tsis ua rau lub davhlau ya nyob twg puas rau qhov chaw nyob ib puag ncig nws. Ntxiv rau lawv tuaj yeem hloov tau yooj yim.
'Pob bearings' hais txog cov pob lawv tus kheej. Pob bearings tuaj yeem tsim los ntawm cov khoom sib txawv, suav nrog chrome steel, stainless hlau thiab - qhov kev tuaj txog tsis ntev los no rau hauv lub ntiaj teb tsheb kauj vab (ntawm qhov ntau tom qab) - ceramic, feem ntau silicon nitride (Si3N4). Ib qho 'hybrid' bearing yog ib qho nrog cov pob zeb ceramic thiab cov hlau sib tw.
Txhua tus kabmob tsis raug tsim sib npaug, txawm tias lawv tau ua los ntawm dab tsi. Kuv ib zaug pom ib tug kws kho tsheb kauj vab saum toj kawg nkaus tshem tawm lub iav tsom iav, ua kom pom tseeb tias huv si, ci ntsa iab pob thiab hais tias, 'Kuv tsis muab cov ntawd tso rau hauv kuv lub hubs. Lawv zoo li cov khoom qab zib dai kom zoo nkauj.’ Zoo li feem ntau, ib qho kev muaj nyob hauv cov kabmob thiab koj tau txais yam koj them rau.
Dab tsi mus ncig… tsis tas yuav ncig
Cov pob bearings pheej yig tshaj tej zaum yuav tsis zoo tag nrho. Bearings feem ntau muab qhab nia raws li qhov ntsuas ntawm roundness, ntsuas mus rau labths ntawm ib nti. Qib 200 steel pob txhais tau hais tias nws yog ib puag ncig rau kev ua siab ntev ntawm 200 lab ntawm ib nti. Li no tus lej qis dua - piv txwv li qib 25 - yog lub pob tsim ntau dua. Rau qhov ntau thiab tsawg siv hauv tsheb kauj vab, qib sib txawv ntawm 2, 000 mus rau 3, nrog txhua yam hauv qab 100 feem ntau suav hais tias yog 'precision pob'. Qhov kev muab qhab nia no yog siv rau cov hlau thiab cov pob zeb ceramic, nrog rau kev gradation ntxiv rau qhov roughness, qhov twg ceramic feem ntau ua tiav cov txiaj ntsig zoo dua - tsuas yog ib qho ntawm nws qhov txiaj ntsig.
Puas qhov sib txawv me me ntawm qhov sib npaug thiab qhov chaw ua rau muaj qhov sib txawv tiag tiag rau tus neeg caij tsheb kauj vab? Alan Weatherill ntawm UK-based cov chaw tsim khoom Hope Technology hais tias, 'Thaum kawg, yog tias cov khoom tsis zoo thiab tsis zoo tag nrho los yog du, lawv yuav ua rau muaj kev sib txhuam ntau ntxiv thiab hnav thiab ua kua muag ntawm tag nrho cov khoom ntawm cov kabmob. Nws yuav inevitably poob. Qhov zoo ntawm lub pob, tsis hais cov khoom siv, yog qhov tseem ceeb tshaj plaws.'
Qhov tseem ceeb ntawm pob bearings yog ntau dua li lawv qhov loj me tuaj yeem qhia, uas yog vim li cas kev lag luam caij tsheb kauj vab tau ua rau muaj kev ntxhov siab ntau dua cov khoom siv ceramic. Ntawm no yog qhov kev pom zoo: cov pob zeb ceramic feem ntau yog rounder, smoother, nyuaj thiab sib zog dua li cov pob steel, yog li yuav tsum theoretically muab kev sib txhuam tsawg dua thiab ntev dua. Lawv kuj tseem kim dua, yog li nws tsim nyog saib xyuas cov txiaj ntsig zoo ntawm cov pob zeb ceramic ua ntej muab koj cov nyiaj ntsuab …
Jacob Csizmadia, tus tsim ntawm CeramicSpeed, yog thawj tus neeg los qhia cov kabmob sib xyaw ua ke rau kev caij tsheb kauj vab rov qab rau xyoo 2000. CeramicSpeed cov ntaub ntawv xeem tau lees tias, qee qhov ua siab loj, rau-rau-cuaj watt lub zog txuag tshaj steel bearings. Yog tias muaj tseeb, qhov ntawd yog lub zog tsim nyog thiab lub sijhawm txuag tau los ntawm kev hloov pauv koj cov kabmob, tab sis tsis yog txhua tus xav tias cov kabmob ceramic yog qhov txuj ci tseem ceeb uas qee tus yuav muaj peb ntseeg.
Weatherill piav qhia vim li cas Kev Cia Siab xav tias yuav tsum muaj kev xaiv cov kabmob ceramic rau nws cov hubs thiab hauv qab brackets: 'Peb tau ua nws vim nws tau nug peb [los ntawm kev ua lag luam]. Peb tsis tau ua los ntawm qhov kev xav ntawm engineering. Feem ntau nws yog hype. Ceramic bearings yog siv nyob rau hauv industrial machinery vim hais tias lawv tig ntawm 25, 000 rpm thiab muaj qhov zoo, tab sis lub tsheb kauj vab log tsuas yog tig ntawm, hais tias, 300 rpm, yog li qhov sib txawv piv rau cov pob hlau zoo heev uas peb twb tau siv yog heev. me ntsis.'
CeramicSpeed tus thawj coj Martin Banke xav tawm tsam Weatherill qhov kev pom, thiab tiv thaiv nws cov ntaub ntawv xeem los ntawm kev hais tias, 'Ceramic bearings tsis yog kev lag luam hype. Cov npas ceramic yog qhov zoo tshaj rau cov pob hlau hauv qab txhua qhov kev paub txog ntawm lub tsheb kauj vab - piv txwv li qhov ua tau zoo ntawm ceramic zoo.'
Nws yog qhov teeb meem ntawm qhov zoo, Banke qhia, uas tej zaum yuav yog vim li cas qee tus neeg tseem tsis ntseeg los ntawm cov kabmob ceramic: 'Qhov zoo ntawm [lwm tus neeg tsim khoom'] ceramic bearings txawv. Qhov no txhais tau hais tias qee qhov tsis zoo, feem ntau pheej yig bearings nrog kev sib txhuam ntau dua, siab dua brittleness thiab luv luv lub neej nyob rau hauv kev ua lag luam thiab yog vim li cas qee qhov, rau qhov laj thawj zoo, tseem nug cov bearings ceramic.'
Thaum nug los tawm tswv yim rau Weatherill cov lus hais txog qhov yuav tsum tau ntawm cov pob zeb ceramic ntawm qhov qis tig nrawm ntawm lub tsheb kauj vab, Banke hais tias, 'Yog tias koj saib ntawm thawj nplooj ntawv hauv phau ntawv loj txog cov kabmob hybrid, koj xav hais. cov lus teb tsis yog [xav tau lawv ntawm lub tsheb kauj vab]. Qhov tseeb qhov no yog deb ntawm qhov tseeb. Nws yog qhov tseeb tias cov bearings ceramic yog Ameslikas tsim los rau kev siv high-speed qhov twg qhov qis qis thiab siab nruj ntawm cov khoom thiab tsis tshua muaj kev sib txhuam ntawm cov bearings enables cov cav tov kom tig sai dua yam tsis muaj kev puas tsuaj rau cov kabmob. Tab sis, zoo li nrog ntau lwm yam thev naus laus zis, ceramic bearings tau ua pov thawj tias muaj cov khoom zoo heev rau cov tsheb kauj vab thiab. Cov khoom siv xws li carbon fiber tsis yog thawj zaug tsim rau tsheb kauj vab, tab sis tam sim no siv los ntawm txhua tus.'
Raws li yog tias rov qab Banke cov ntsiab lus, ib qho kev nkag mus rau lub lag luam ceramic tom qab pib lub sijhawm tsis paub tseeb yog Chris King, Asmeskas hom uas tej zaum lub npe muaj koob npe tshaj plaws hauv cov kabmob rau tsheb kauj vab. Thaum ntxov ntawm cov ceramic 'boom', Chris King tsis xav dhia hauv, thiab txuas ntxiv mus tua hlau lub kaum rau qee lub sijhawm. Txawm li cas los nws tseem tam sim no muaj kev hloov kho ceramic rau tag nrho nws cov khoom, nrog rau kev cais ntawm headsets.
'Muaj ntau qhov hype nyob ib puag ncig ceramics txij li thaum lawv tau qhia, thiab ntau cov khoom lag luam nkag mus rau hauv kev lag luam tsis muaj tag nrho cov qauv tsim los coj cov khoom siv no rau nws qhov kev ua tau zoo tshaj plaws, yog li qee zaum muab Nws yog lub npe phem, 'hais tias huab tais, tus tswv ntawm lub tuam txhab npe hu ua eponymously. 'Qhov kev txiav txim siab muab cov kev xaiv ceramic yog ib qho kev xaiv rau lub siab, tsis yog kev lag luam-tsav ib qho,' nws tau hais tias, thiab nws ua pov thawj rau lub tuam txhab qhov kev nkag mus rau cov ceramic fray los ntawm kev hais tias, 'Cov pob steel zoo thiab cov roj nplua nyeem ua tau zoo heev thiab peb muaj. xyoo dhau los ua pov thawj qhov no. Txhawm rau kawm txog cov yam ntxwv ntawm cov pob zeb ceramic peb muab tso rau lawv los ntawm kev sim dav. Qhov kev txiav txim siab muab cov kev xaiv ceramic tuaj txog tsuas yog tom qab peb tau ua pov thawj rau peb tus kheej tias muaj txiaj ntsig tiag tiag.'
Ib qho ntawm cov txiaj ntsig, Vaj Ntxwv thov, yog tias 'cov pob zeb ceramic muaj qhov tshwj xeeb muaj peev xwm khaws tau lawv cov "tseeb" kheej kheej nyob rau hauv load. Qhov no tsim cov xwm txheej rau peb cov khoom siv ceramic kom muaj lub neej ntev thiab ua haujlwm zoo.'
Tam sim no King lees paub tias cov txiaj ntsig kev ua tau zoo tsis yog loj: 'Peb cov kev tshawb fawb tau pom tias peb cov kabmob hybrid ceramic muaj cov txiaj ntsig zoo rau cov neeg siv khoom paub.' Huab tais hais tias, 'Nyob rau hauv ib tug huab tais hybrid ceramic bearing kev siv ntawm ib tug ceramic pob txo cov lubrication yuav tsum tau kom sib dua roj thiab nws yuav siv tsawg tshaj li ntawm ib tug sib piv steel bearing. Cov roj nplua nyeem tsawg txhais tau tias tsis tshua muaj rub ntawm cov kabmob.'
Qhov no zoo li 'kev nce qib' thaj chaw. Tej zaum qhov kev ua tau zoo dua tuaj yeem raug nyem los ntawm cov kabmob yog tias txhua qhov chaw yog ceramic es tsis yog cov pob? Chris King, Kev Cia Siab thiab CeramicSpeed tag nrho muab 'hybrid' ceramic bearings (ceramic balls in steel races), yog li cas ceramic ntawm ceramic yuav zoo dua?
Huab tais hais tias nws tseem tsis tau muaj peev xwm ua pov thawj tias yuav tsum tau muaj cov kabmob ceramic tag nrho 'thiab tseem hais txog tus nqi uas yog qhov laj thawj loj tshaj plaws uas tsis tuaj yeem ua tiav ceramic. Banke qhia tias kev sib tw ceramic tuaj yeem ua rau nkig ntau dua nrog lub peev xwm ua tsis tiav, yog li nws ib yam nkaus nrog hybrid.
Thaum nug seb lawv xav tias yav tom ntej tuav, Banke thiab King pom zoo tias cov kabmob ceramic nyob ntawm no. Banke txawm kwv yees tias 'kev nce loj hauv tus lej ntawm kev hloov kho tom qab kev lag luam - ntau tus neeg uas yuav lub log tsheb kim ib xyoos yuav zaum yuav cov khoom siv hloov kho cov kabmob tom ntej'.
Yuav ua li cas tsis pom tus kabmob zoo
Tsab yog koj tau ua qhov no… muab lub tsheb kauj vab tso rau hauv qhov chaw ua haujlwm lossis tig nws rov qab, nqa lub log lossis lub hauv qab tuav tig nrawm thiab saib seb lawv tig mus ntev npaum li cas. Qhov ntev lawv tig, qhov zoo dua cov kabmob, puas yog?
Nws yog ib qho dag siv los ntawm cov tuam txhab lag luam ntawm cov khw muag tsheb kauj vab thiab kev lag luam, qhov twg cov neeg ncaws pob raug caw kom tig lub log lossis BB thiab xav tsis thoob thaum nws tig mus rau lub hnub nyoog. Ib txoj hauv kev yooj yim kom ua tiav qhov no yog tshem cov roj tawm ntawm cov bearings thiab siv lub teeb roj kom txo kev sib txhuam thiab ua kom nws tig tau yooj yim dua. Nws yog ib yam dab tsi uas cov neeg caij tsheb, tshwj xeeb tshaj yog cov sijhawm sim, siv los sim kom tau txais txiaj ntsig.
Tau kawg, qhov no tsis ua raws li qhov xav tau yog lub zog loj ntawm cov kabmob uas lub pedaling thiab tus neeg caij lub cev hnyav. Thaum koj zaum ntawm lub tsheb kauj vab, cia nyob ib leeg sprint nws txoj kev, cov khoom yuav raug yuam kom nyuaj rau hauv kev sib tw, thiab tshwj tsis yog lub roj nplua nyeem tuaj yeem tiv nrog lub zog ntawd nws yuav tsuas yog nyem tawm ntawm qhov sib tiv tauj, uas ua rau muaj kev sib tw. pob khiav ncaj nraim rau saum npoo ntawm kev sib tw tsis muaj roj.
Banke piav qhia, 'Ib tus kabmob steel uas tsis muaj cov ntsaws ruaj ruaj, huv si thiab qhuav, tuaj yeem tig tau zoo heev ntawm qhov muag. Tab sis sai li sai tau thaum koj ntxiv qhov hnyav, cov pob hlau kov cov hlau sib tw thiab kev sib txhuam nce ntau heev.' Tawm ntawm txoj kev koj yuav ntsib kev ua si thiab nce tus nqi hnav, thiab cov kabmob yuav ua tsis tau sai.'
Txoj kev ncaj ncees yog: tsis txhob ntseeg qhov tig - lus. Tib txoj hauv kev los xyuas kom lub neej ntev thiab qhov tseeb, yog tias marginal, kev ua tau zoo yog kom paub tseeb ntawm koj cov khoom zoo.
Qhov tseem ceeb ntawm cables, thiab yuav ua li cas kom haum lawv
