Cov menyuam chains lossis bushed roller chains feem ntau yog siv rau ntau hom tsev neeg, kev lag luam thiab kev ua liaj ua teb machinery xws li conveyors, hlau drawing machine, printing presses, tsheb, maus taus, thiab lwm yam. Nws yog ib tug saw tsav hom siv. tsheb tuam. Nws muaj ib tug series ntawm luv cylindrical rollers tuav ua ke los ntawm sab kev sib txuas. Nws yog tsav los ntawm lub zog hu ua sprockets. Nws yog ib qho yooj yim, txhim khu kev qha thiab muaj txiaj ntsig ntawm kev xa hluav taws xob. Lub xyoo pua 16th kos duab los ntawm Leonardo da Vinci qhia cov saw nrog cov menyuam bearings. Nyob rau hauv 1800, James Fassel patented ib tug menyuam saw uas tsim ib tug counterbalance xauv, thiab nyob rau hauv 1880, Hans Reynold patented ib tug Bush roller saw.
tso
Bushed roller chains muaj ob hom kev sib txuas sib txuas. Thawj hom yog qhov txuas sab hauv, qhov twg ob daim hlau sab hauv yog tuav ua ke los ntawm ob lub tes tsho los yog bushings uas tig ob lub rollers. Cov kev sib txuas sab hauv hloov nrog ib hom thib ob ntawm kev sib txuas sab nraud, muaj ob daim hlau sab nrauv tuav ua ke los ntawm cov pins dhau los ntawm cov kab txuas sab hauv. "Bushless" roller chains yog tsim txawv tab sis ua haujlwm zoo sib xws. Es tsis txhob cais bushings los yog lub tes tsho tuav lub puab panels ua ke, cov panels yog stamped nrog cov hlab uas protrude los ntawm lub qhov thiab ua hauj lwm tib lub hom phiaj. Qhov no muaj qhov zoo ntawm kev tshem tawm ib kauj ruam hauv kev sib dhos saw hlau. Cov menyuam saw tsim txo kev sib txhuam, uas ua rau kom muaj txiaj ntsig thiab txo qis hnav piv rau cov qauv tsim yooj yim. Tus thawj tsav saw tsis muaj chais lossis bushings, thiab ob lub phaj sab hauv thiab sab nrauv tau tuav ua ke los ntawm cov pins uas ua rau kev sib cuag ncaj qha nrog cov hniav sprocket. Txawm li cas los xij, hauv qhov kev teeb tsa no kuv pom tias cov hniav sprocket thiab cov phaj uas cov hniav sprocket tig tau hnav sai heev. Qhov teeb meem no tau daws ib nrab los ntawm kev txhim kho lub tes tsho chains, nyob rau hauv uas cov pins tuav cov phaj txheej dhau los ntawm bushings los yog lub tes tsho txuas cov phaj sab hauv. Qhov no faib cov hnav mus rau ib qho chaw dav. Txawm li cas los xij, cov hniav sprocket tseem hnav sai dua li qhov xav tau vim yog zawv zawg kev sib txhuam nrog cov bushings. Cov chais ntxiv nyob ib puag ncig cov saw bushing lub tes tsho muab kev sib cuag nrog cov hniav sprocket thiab tseem muab kev hnav zoo heev rau cov sprocket thiab saw. Tsuav yog cov saw hlau zoo lubricated, kev sib txhuam yog tsawg heev. Tsis tu ncua huv lubrication ntawm cov menyuam chains yog qhov tseem ceeb rau kev ua haujlwm tau zoo thiab raug nruj.
lubricating
Ntau lub tshuab tsav tsheb (xws li camshaft drives hauv cov khoom siv hauv lub Hoobkas thiab cov tshuab hluav taws xob sab hauv) ua haujlwm hauv qhov chaw huv si kom lawv cov chaw hnav (piv txwv li pins thiab bushings) tsis cuam tshuam los ntawm kev sib haum xeeb thiab tshem tawm cov sediment, thiab ntau qhov chaw raug kaw, piv txwv li, qee cov menyuam. chains muaj ib tug built-in O-nplhaib ntawm lub sab txuas phaj thiab lub puab yob saw phaj. Cov tuam txhab lag luam tau pib siv cov yam ntxwv no tom qab Joseph Montano, uas ua haujlwm rau Whitney Chain hauv Hartford, Connecticut, tau tsim daim ntawv thov xyoo 1971. O-rings tau qhia los ua ib txoj hauv kev txhim kho lubrication ntawm lub zog xa hluav taws xob sib txuas, uas yog ib qho tseem ceeb rau kev txuas lub neej ntawm cov saw hlau. . Cov roj hmab retainers no tsim ib qho kev thaiv uas ua rau lub Hoobkas siv roj nyob rau hauv qhov chaw hnav ntawm tus pin thiab bushing. Tsis tas li ntawd, cov roj hmab O-rings tiv thaiv cov plua plav thiab lwm yam kab mob los ntawm kev nkag mus rau hauv cov hlua txuas. Txwv tsis pub, cov khoom no tuaj yeem ua rau hnyav hnyav. Kuj tseem muaj ntau cov saw hlau uas yuav tsum tau ua haujlwm hauv qhov chaw qias neeg thiab tsis tuaj yeem raug kaw vim qhov loj lossis qhov laj thawj ua haujlwm. Piv txwv xws li chains siv rau cov khoom siv ua liaj ua teb, tsheb kauj vab, thiab chainsaws. Cov chains no inevitably muaj qhov hnav hnyav heev. Ntau cov roj-raws li lubricants nyiam cov plua plav thiab lwm yam khoom, thaum kawg tsim cov tshuaj txhuam hniav uas ua rau cov saw hlau ntxiv. Qhov teeb meem no tuaj yeem daws tau los ntawm kev siv "qhuav" PTFE txau. Nws tsim ib zaj duab xis muaj zog tom qab daim ntawv thov uas thaiv ob qho tib si thiab ya raws.
Motorcycle chain lubrication
Siv cov roj da dej nrog cov saw hlau uas khiav ntawm kev kub ceev sib npaug rau ob lub log tsheb. Qhov no tsis tuaj yeem ua tau ntawm cov maus taus niaj hnub, thiab cov saw hlau maus taus feem ntau khiav tsis muaj kev tiv thaiv. Yog li ntawd, maus taus chains nyiam hnav sai sai piv rau lwm yam kev siv. Lawv raug quab yuam heev thiab raug los nag, av nkos, xuab zeb thiab txoj kev ntsev. Lub tsheb kauj vab saw yog ib feem ntawm lub tsheb kauj vab uas hloov lub zog ntawm lub cev muaj zog mus rau lub log tsheb. Lub tshuab lubricated kom zoo tuaj yeem ua tiav ntau dua 98% kev sib kis tau zoo. Ib txoj hlua tsis muaj roj yuav txo qis kev ua tau zoo thiab ua kom cov saw thiab sprocket hnav. Muaj ob hom kev lag luam maus taus saw lubricants muaj: cov roj lubricants thiab cov dej ntws. Txau cov roj nplua nyeem tuaj yeem muaj wax lossis Teflon. Cov lubricants no siv cov khoom nplaum nplaum los lo rau koj cov saw hlau, tab sis lawv kuj tsim cov tshuaj txhuam hniav uas rub cov av thiab grit los ntawm txoj kev thiab ua kom cov khoom siv hnyav dua lub sijhawm. Tsis tu ncua lubricate cov saw los ntawm cov roj ntws, siv cov roj teeb uas tsis lo rau cov saw hlau. Kev tshawb fawb qhia tau hais tias drip oil supply systems muab kev tiv thaiv hnav siab tshaj plaws thiab kev txuag hluav taws xob ntau tshaj plaws.
Variants
Yog tias cov saw hlau tsis siv rau cov ntaub ntawv hnav siab (piv txwv li, tsuas yog xa cov lus tsa suab ntawm lub tes taw mus rau lub taub hau ntawm lub tshuab, lossis lub qhov rooj zawv zawg ntawm qhov cub), siv hom yooj yim dua. Cov saw tseem siv tau. Hloov pauv, cov saw hlau yuav "pob" thaum xav tau lub zog ntxiv, tab sis yuav tsum tau tsav kom zoo ntawm lub sijhawm me me. Hloov chaw tsuas yog 2 kab ntawm daim hlau nyob rau sab nraud ntawm cov saw hlau, nws tuaj yeem tso 3 ("ob npaug"), 4 ("triple") lossis ntau kab ntawm cov phiaj sib npaug, nrog cov bushings ntawm cov khub uas nyob ib sab thiab cov menyuam. Cov hniav nrog tib tus naj npawb ntawm kab yog teem rau tib lub sijhawm thiab sib npaug ntawm cov sprocket. Piv txwv li, lub tsheb cav lub sij hawm saw feem ntau muaj ntau kab ntawm daim hlau hu ua chains. Cov menyuam chains tuaj nyob rau hauv ntau qhov ntau thiab tsawg, nrog rau feem ntau American National Standards Institute (ANSI) cov qauv yog 40, 50, 60, thiab 80. Thawj tus lej qhia qhov sib nrug ntawm cov saw hauv 8-nti increments, thiab tus lej kawg. yog 0. 1 yog rau ib tug qauv saw, 1 rau ib lub teeb yuag saw, thiab 5 rau lub tes tsho saw tsis muaj chais. Yog li cov saw nrog 0.5 nti suab yog qhov loj 40 sprocket, thaum qhov loj 160 sprocket muaj 2 ntiv tes ntawm cov hniav, thiab lwm yam. Metric xov suab yog qhia nyob rau hauv kaum rau ntawm ib nti. Yog li ntawd, Metric No. 8 saw (08B-1) yog sib npaug rau ANSI No. 40. Feem ntau cov menyuam chains yog tsim los ntawm cov pa roj carbon monoxide los yog hlau alloy, tab sis stainless hlau yog siv rau hauv cov khoom noj khoom haus machinery thiab lwm qhov chaw uas lubrication yog ib qho teeb meem. , peb kuj qee zaum pom nylon thiab tooj dag rau tib yam vim li cas. Roller chains feem ntau txuas nrog siv cov txuas txuas (tseem hu ua "txuas txuas"). Qhov txuas tseem ceeb no feem ntau muaj tus pin tuav nyob rau hauv qhov chaw los ntawm horseshoe clip es tsis yog kev sib txhuam haum thiab tuaj yeem muab tso lossis tshem tawm nrog lub cuab yeej yooj yim. Chains nrog tshem tau txuas lossis pins tseem hu ua adjustable split chains. Ib nrab txuas (tseem hu ua "offsets") muaj thiab siv los ua kom cov hlua ntev nrog ib tus menyuam. Riveted Roller Chains Qhov kawg ntawm qhov txuas tseem ceeb (tseem hu ua "kev sib txuas") yog "riveted" lossis crushed. Cov pins no ruaj khov thiab tsis tuaj yeem raug tshem tawm.
horseshoe clip
Ib tug nees khau khiab yog ib qho U-zoo li lub caij nplooj ntoos hlav steel txuas siv los ua kom ruaj khov rau sab phaj ntawm kev sib txuas (los yog "tus tswv") txuas uas yog yav tas los tsim nyog los ua kom tiav cov hlua txuas. Txoj kev clamp yog ntog tawm ntawm kev txaus siab raws li ntau thiab ntau cov chains raug tsim los ua qhov kawg loops uas tsis yog npaj rau kev saib xyuas. Niaj hnub nimno maus taus zoo li yuav nruab nrog cov chains tsis kawg, tab sis nws yog qhov tsawg dua rau cov saw hlau hnav thiab yuav tsum tau hloov. Muaj raws li qhov khoom seem. Kev hloov kho rau lub tsheb maus taus yuav txo tau qhov kev siv no. Feem ntau pom nyob rau hauv cov laus maus taus thiab cov tsheb kauj vab laus (xws li cov uas muaj hub gears), txoj kev clamp no tsis tuaj yeem siv rau ntawm cov tsheb kauj vab nrog derailleur gears vim tias cov clamps zoo li tau daig hauv lub shifter. Feem ntau, cov saw tsis kawg yog tsau rau lub thav duab ntawm lub tshuab thiab tsis tuaj yeem hloov tau yooj yim (qhov no yog qhov tseeb tshwj xeeb rau cov tsheb kauj vab). Txawm li cas los xij, qee zaum, kev sib txuas sib txuas siv horseshoe clamps yuav tsis ua haujlwm lossis nyiam los ntawm daim ntawv thov. Nyob rau hauv cov ntaub ntawv no, ib tug "mos txuas" yog siv, uas tsuas yog nyob rau hauv kev sib txhuam siv ib tug saw riveting tshuab. Siv cov ntaub ntawv tshiab, cov cuab yeej, thiab cov txuj ci txawj ntse, qhov kev kho no yog ib qho kev txhim kho tas mus li uas yuav luag zoo li muaj zog thiab kav ntev npaum li cov saw tsis tawg.
siv
Cov menyuam chains yog siv nyob rau hauv qis mus rau nruab nrab ceev tsav nrog speeds ntawm kwv yees li 600 mus rau 800 ko taw ib feeb. Txawm li cas los xij, ntawm kev kub ceev, kwv yees li 2,000 txog 3,000 ko taw ib feeb, V-siv siv feem ntau siv vim muaj teeb meem hnav thiab suab nrov. Tsheb kauj vab saw yog ib hom ntawm cov menyuam saw. Koj lub tsheb kauj vab yuav muaj qhov txuas txuas, lossis nws yuav xav tau cov cuab yeej saw hlau tshem tawm thiab nruab. Feem ntau cov maus taus siv cov saw hlau zoo sib xws, loj dua, muaj zog dua, tab sis qee zaum qhov no tau hloov nrog cov hlua khi los yog cov ncej tsav uas ua rau muaj suab nrov tsawg thiab yuav tsum tau saib xyuas tsawg dua. Qee lub cav tsheb siv cov hlua khi rau tsav camshafts. Iav drives feem ntau yog siv nyob rau hauv lub cav ua haujlwm siab, thiab qee lub tuam txhab tau siv cov hlua khau khiab txij thaum xyoo 1960s. Chains kuj tseem siv tau rau hauv lub forklifts uas siv hydraulic rams li pulleys los tsa thiab txo lub tsheb. Txawm li cas los xij, cov chains no tsis suav tias yog cov hlua khi tab sis raug cais raws li nqa cov saw lossis phaj saw. Chainsaw txiav chains yog superficially zoo ib yam li cov menyuam chains tab sis muaj ze ze rau cov saw hlau. Lawv tau tsav los ntawm kev sib txuas ntawm cov tsav tsheb thiab tseem ua haujlwm rau txoj haujlwm ntawm cov saw hlau ntawm lub bar. Tej zaum qhov txawv txav siv ib khub ntawm maus taus chains, Harrier Jumpjet siv cov saw tsav los ntawm lub tshuab cua los tig lub cav txav tau lub taub hau uas taw tes rau hauv qab rau hover davhlau thiab rov qab rau ib txwm kuv ua tau. Forward flight, ib qho system hu ua "thrust vectoring.
hnav
Cov nyhuv ntawm cov menyuam saw hnav yog ua kom lub suab (qhov kev ncua deb ntawm cov kev sib txuas) thiab lengthen cov saw. Nco ntsoov tias qhov no yog vim hnav ntawm tus pin pivot thiab bushing, tsis yog qhov tseeb elongation ntawm cov hlau (uas tshwm sim nrog qee qhov hloov pauv steel, xws li tsheb nres tsheb cables). zoo li). Nrog cov chains niaj hnub, nws tsis tshua muaj rau cov saw hlau (tsis yog tsheb kauj vab) hnav mus rau qhov tsis ua haujlwm. Raws li cov saw hnav, cov hniav sprocket pib hnav sai sai thiab nws thiaj li tawg, ua rau poob tag nrho cov hniav sprocket. Sprocket hniav. Lub sprocket (tshwj xeeb tshaj yog qhov me me ntawm ob lub sprockets) dhau los ua ib qho kev sib tsoo uas tsim cov yam ntxwv sib sib zog nqus rau ntawm qhov chaw tsav ntawm cov hniav. (Qhov kev cuam tshuam no yog exacerbated los ntawm cov saw nro tsis raug, tab sis tsis muaj teeb meem txawm tias yuav ceev faj npaum li cas). Hnav cov hniav (thiab chains) yuav tsis muaj peev xwm xa hluav taws xob zoo, uas yuav pom tseeb hauv lub suab nrov, kev vibration, lossis (thaum lub tsheb cav nrog lub sij hawm chains) hloov ntawm lub sij hawm ignition pom los ntawm lub sij hawm lub teeb. Ib txoj hlua tshiab ntawm lub sprocket hnav yuav tsis kav ntev, yog li qhov no ob lub sprocket thiab saw yuav tsum tau hloov. Txawm li cas los xij, nyob rau hauv cov xwm txheej tsawg dua, koj tuaj yeem txuag qhov loj ntawm ob lub sprockets. Qhov no yog vim qhov me me sprockets ib txwm hnav tshaj plaws. Chains feem ntau tsuas yog tawm ntawm cov sprockets nyob rau hauv daim ntawv thov lub teeb heev (xws li tsheb kauj vab) los yog thaum muaj xwm txheej tsis txaus. Cov saw hnav elongation yog xam raws li cov qauv hauv qab no: % = ( ( M. − ( S. ＊ P. ) ) / ( S. ＊ P. ) ) ＊ 100 {\ displaystyle \% = ((M-(S *P ))/(S*P))*100} M = Length of number of measured links S = Number of measured links P = Pitch It is Feem ntau nyob rau hauv kev lag luam los saib xyuas lub zog ntawm cov saw tensioner (txawm yog phau ntawv los yog tsis siv neeg) thiab qhov tseeb ntawm cov saw hlau ntev (txoj cai ntawm tus ntiv tes xoo yog rub lub rollers 3% nyob rau hauv ib qho adjustable tsav los hloov cov saw lossis ncab cov menyuam. saw 1.5%) % (hauv ib lub chaw ruaj khov). Ib txoj hauv kev yooj yim, tshwj xeeb tshaj yog tsim rau cov neeg siv tsheb kauj vab thiab maus taus, yog rub cov saw hlau tawm ntawm qhov loj ntawm ob lub sprockets thaum cov saw hlau taut. Kev txav txav tseem ceeb (pom pom ntawm qhov khoob, thiab lwm yam) yuav qhia tau tias cov saw hlau tau mus txog lossis dhau nws qhov kev txwv qhov kawg. Tsis quav ntsej qhov teeb meem no yuav ua rau lub sprocket puas. Sprocket hnav tuaj yeem tiv thaiv cov nyhuv no thiab daim npog ntsej muag hnav.
Tsheb kauj vab saw hnav
Lub teeb yuag ntawm cov tsheb kauj vab nrog lub zog derailleur tuaj yeem tawg vim tias tus pin sab hauv yog lub thoob-puab es tsis txhob cylindrical (los yog theej, nyob rau sab phaj, vim "riveting" feem ntau yog thawj zaug ua tsis tiav). tuaj yeem tawm). Kev sib cuag ntawm tus pin thiab bushing yog qhov taw tes ntau dua li cov kab ib txwm ua, ua rau cov saw hlau tus pin hla lub bushing thiab thaum kawg cov menyuam, thaum kawg ua rau cov saw hlau tawg. Cov qauv no yog qhov tsim nyog vim tias qhov kev hloov pauv ntawm qhov kev sib kis no yuav tsum muaj cov saw hlau khoov thiab twist rau sab, tab sis yog vim qhov yooj yim thiab kev ywj pheej ntev ntawm xws li cov saw nyias nyias ntawm lub tsheb kauj vab. ntev yuav tshwm sim. Chain tsis ua haujlwm yog qhov teeb meem tsawg dua hauv hub iav tshuab (Bendix 2 ceev, Sturmey-Archer AW, thiab lwm yam) vim tias qhov hnav nto ntawm kev sib cuag nrog cov pin sib npaug yog loj dua. Lub hub iav system kuj tso cai rau kom muaj vaj tse ua tiav, uas pab tau zoo heev hauv lubrication thiab xuab zeb tiv thaiv.
chain zog
Qhov kev ntsuas feem ntau ntawm cov menyuam saw lub zog yog lub zog tensile. Lub zog tensile qhia tias tus nqi ntawm ib qho kev thauj khoom ib lub saw tuaj yeem tiv taus ua ntej tawg. Chain qaug zog yog qhov tseem ceeb raws li lub zog tensile. Cov ntsiab lus tseem ceeb uas cuam tshuam rau lub zog qaug zog ntawm cov saw hlau yog qhov zoo ntawm cov hlau siv los tsim cov saw hlau, kev kho cua sov ntawm cov saw hlau, qhov zoo ntawm cov saw hlau phaj knot qhov ua, hom kev txhaj tshuaj thiab lub zog ntawm cov saw hlau. txhaj tshuaj peening txheej. nyob rau ntawm qhov link board. Lwm yam yuav muaj xws li saw phaj thickness thiab saw phaj tsim (profile). Rau cov menyuam chains ua haujlwm hauv kev tsav tsheb tas mus li, txoj cai ntawm tus ntiv tes xoo yog tias cov khoom thauj ntawm cov saw yuav tsum tsis pub tshaj 1/6 lossis 1/9 ntawm cov saw lub zog tensile, nyob ntawm seb hom kev txuas txuas siv (xov-haum lossis plam- yog). yuav tsum haum). Cov menyuam cov chains ua haujlwm hauv kev tsav tsheb tas mus li saum cov chaw pib no tuaj yeem ua tau, thiab feem ntau ua, ua tsis tiav vim qaug zog ntawm cov saw hlau. Tus qauv yam tsawg kawg nkaus lub zog rau ANSI 29.1 steel chains yog 12,500 x (pitch in inches)2. X-ntiv nplhaib thiab O-ring chains muaj cov roj nplua nyeem sab hauv uas txo qis hnav thiab ua kom lub neej ntev. Internal lubricant yog txhaj ntawm lub tshuab nqus tsev thaum riveting cov saw.
chain standard
Cov koom haum Standards xws li ANSI thiab ISO tswj cov qauv rau kev tsav saw hlau, qhov ntev, thiab kev sib hloov. Piv txwv li, cov lus hauv qab no qhia cov ntaub ntawv los ntawm ANSI Standard B29.1-2011 (Precision Roller Chains, Accessories, thiab Sprockets) tsim los ntawm American Society of Mechanical Engineers (ASME). Saib Resources kom paub meej. Txhawm rau pab koj nco qab, ntawm no yog lwm daim ntawv qhia ntawm qhov loj me (hauv ntiv tes) rau tib tus qauv (uas yog ib feem ntawm qhov koj xav txog thaum xaiv cov lej pom zoo los ntawm tus qauv ANSI): Cov tsheb kauj vab sib txawv (rau derailleur gears) Siv nqaim 1 / 2 nti pitch chain. Chain dav yog hloov pauv yam tsis muaj kev cuam tshuam rau lub peev xwm thauj khoom. Qhov ntau sprockets koj muaj nyob rau hauv lub rear log (siv 3-6, tam sim no 7-12), lub thinner cov saw. Chains raug muag raws li tus naj npawb ntawm cov nrawm uas lawv tau tsim los ua haujlwm ntawm, xws li "10-ceev saw." hub iav lossis ib lub tsheb kauj vab nrawm siv 1/2 x 1/8 nti saw. 1/8 nti yog hais txog qhov siab tshaj plaws sprocket thickness uas tuaj yeem siv rau ntawm cov saw hlau. Chains nrog kev sib txuas sib txuas feem ntau muaj ntau qhov sib txuas, nrog rau txhua qhov txuas nqaim ua raws li qhov txuas dav dua. Cov chains ua nrog cov kev sib txuas tsis sib xws uas nqaim ntawm ib kawg thiab dav ntawm lwm qhov tuaj yeem ua nrog cov khib nyiab ntawm kev sib txuas, uas yog qhov zoo rau kev ua kom haum rau qhov tshwj xeeb sprocket. Rau ib yam, xws li chains yuav tsis muaj zog. Cov menyuam chains uas tsim los rau cov qauv ISO qee zaum hu ua "isochains".
Post lub sij hawm: Nov-06-2023
