Chain Drive vs Belt Drive
Saw tsav thiab siv txoj siv sia yog ob lub tshuab siv hauv kev xa hluav taws xob. Lub zog tso zis los ntawm lub cav nyob rau hauv daim ntawv ntawm torque xa los ntawm crankshaft los yog qag yog pauv mus rau lwm lub cev rotating xws li lub qag lossis lub log siv kaw lub voj ntawm cov saw lossis siv. Nws yog ib txoj hauv kev tshaj plaws ntawm kev xa hluav taws xob.
Ntau txog Chain Drive
Nyob rau hauv feem ntau ntawm cov saw tsav mechanisms, lub hwj chim yog conveyed siv ib tug menyuam saw hlau ua los ntawm cov hlau txuas mus hla lub sprocket iav. Cov hniav ntawm lub iav haum rau hauv qhov sib txuas ntawm cov saw hlau. Thaum lub iav tig los ntawm lub zog ntawm lub cav lossis lub cev muaj zog, cov saw tseem txav lub log tsav ntawm lwm qhov kawg. Chain drives yog siv rau hauv tsheb kauj vab, tsheb kauj vab thiab lwm yam tsheb.
Fais fab kis tau tus mob tuaj yeem muab faib ua cov saw hlau, engineering steel saw, cov saw uas ntsiag to, cov saw hlau tshem tau, thiab offset sidebar saw. Chain drives muaj txiaj ntsig zoo hauv cov ntawv thov rau cov laj thawj hauv qab no. Chain drives tsis muaj slippage ntawm cov hniav sprocket thiab saw thiab stretch ntawm cov saw yog tsawg heev nrog ib tug high degree ntawm flexure. Yog li ntawd, cov saw hlau tuaj yeem siv rau kev tsav lub tshuab ua haujlwm ntawm kev thauj khoom siab.
Lub neej expectancy ntawm cov saw drives kuj siab dua vim cov khoom siv (zoo alloys) thiab muaj peev xwm siv lubrication (xws li roj los yog roj). Chain drives tuaj yeem siv rau hauv qhov xwm txheej hnyav thiab qhov chaw hnyav uas lwm lub tshuab yuav ua tsis tau. Cov qauv hlau muab rau nws muaj peev xwm tiv taus qhov kub thiab txias thiab noo noo. Nws tsis raug cuam tshuam los ntawm kev muaj av, av nkos, lossis lwm yam kab mob hauv lub cev; yog li ntseeg tau.
Rau qhov kev xav ntawm kev saib xyuas, cov khoom siv ntawm cov saw hlau uas xav tau kev pabcuam siab heev tuaj yeem hloov pauv thiab pabcuam yam tsis muaj kev cuam tshuam lwm yam.
Qhov tsis zoo ntawm cov saw hlau tsis suav nrog lawv los ntawm cov txheej txheem ua haujlwm raug. Chain drives tsim cov suab nrov ntau (tab sis cov hlua uas ntsiag to ua suab nrov tsawg). Sprockets elongate thiab deform raws li kev hnav ntawm qhov txuas thiab sprocket tiv tauj nto. Kev hloov pauv ntawm cov saw tsuas yog txwv rau ib qho tiaj xwb, thiab nws tsuas yog siv tau rau hauv cov tshuab qis qis xwb.
Ntau txog Belt Drive
Lub voj uas yog ua los ntawm cov khoom siv tau yooj yim thiab siv rau lub hom phiaj ntawm kev xa hluav taws xob feem ntau hu ua txoj siv tawv. Txoj siv sia kuj tseem siv tau rau kev taug qab cov neeg txheeb ze thiab ua lub hauv paus ntawm cov lus tsa suab (conveyor siv).
Kev ua haujlwm ntawm txoj siv txoj siv sia yuav tsum muaj ob lossis ntau dua rubeys qhov twg txoj siv tau qhwv ib ncig ntawm lawv kom zoo thiab cov pulleys txuas nrog rau kev tsav tsheb thiab kev tsav tsheb. Vim qhov hloov pauv ntawm cov khoom siv ntawm txoj siv sia, rubeys tuaj yeem tsim los tig rau hauv cov dav hlau sib txawv thiab tig mus rau qhov sib txawv.
Belt drives tau dhau los ua qhov kev xaiv zoo tshaj plaws rau lub zog xa hluav taws xob vim muaj qhov zoo hauv qab no. Fais fab kis tau tus mob yog tsis lubricated thiab txij nkawm yog tsawg. Nws muaj lub zog tensile ntau dua thiab tuaj yeem tiv taus kev hloov pauv sai ntawm lub nra thiab ua rau cov kev vibrations. Kev ua haujlwm yog du thiab ntsiag to. Pulleys tsis tshua kim los tsim dua lub zog sprocket, yog li pheej yig dua.
Txawm tias siv txoj siv sia muaj ntau qhov zoo, lawv muaj qhov tsis zoo hauv qab no. Cov hlua khi tsis kawg tsis tuaj yeem kho thaum tawg, thiab yuav tsum tau hloov. Tsis tas li ntawd, kev hloov ntawm lub load los yog nro yuav ua rau slippage. Lawv tsis tuaj yeem ua haujlwm nyob rau hauv qhov xwm txheej hnyav vim tias cov khoom siv rhiab rau qhov kub thiab txias thiab noo noo txo qhov kev sib cuag ntawm qhov sib txhuam ua rau slippage. Tsis tas li ntawd, qhov ntev ntawm txoj siv tawv tsis tuaj yeem hloov kho.
Dab tsi yog qhov txawv ntawm Chain Drive thiab Belt Drive?
• Txoj siv tawv yog ua los ntawm cov polymers, thiab cov saw hlau yog ua los ntawm cov hlau.
• Cov saw hlau tuaj yeem ua haujlwm hauv qhov kub thiab txias, tab sis siv txoj siv tawv tsis tuaj yeem.
• Txoj siv tawv tsis yog lubricated, whereas chain drives yog lubricated.
• Txoj siv sia siv tau swb, hos cov saw hlau tsis muaj swb.
• chain drives siv sprocket, thaum siv txoj hlua siv sheaves (pulleys).
• Chain tsav tuaj yeem ua haujlwm hauv qhov hnyav, thaum siv txoj siv sia tuaj yeem ua haujlwm nyob rau hauv kev kub ceev.
• Txoj siv sia nyob ntsiag to, thaum cov saw hlau tsis muaj suab nrov.
