Thaum lub dov bearing ntawm lub cav crankshaft tsis ua haujlwm, nws yuav cuam tshuam ncaj qha rau lub xeev ntawm lub cav. Yog li ntawd, kev saib xyuas yuav tsum tau them rau qhov tsis ua haujlwm ntawm cov kabmob dov. Cov kev ua tsis tiav ntawm cov kabmob dov yog tam sim no txheeb xyuas raws li hauv qab no: 1. Nws muaj qhov sib txawv ntawm qhov txav ntawm sab hauv thiab sab nraud ntawm cov kabmob thiab qhov hnav ntawm qhov chaw mating

①. Lub nplhaib sab nraud ntawm cov kabmob txav ib ncig. Txhawm rau kom yooj yim disassembly thiab sib dhos, lub nplhaib sab nraud ntawm cov kabmob dov tau txais kev hloov pauv haum nrog lub rooj zaum qhov. Qhov siab tshaj plaws cuam tshuam ntawm lub nplhaib sab nraud ntawm cov kabmob pem hauv ntej yog 0.035mm, thiab qhov siab tshaj plaws clearance yog 0.013mm. Qhov siab tshaj plaws cuam tshuam ntawm lub nplhaib sab nraud ntawm lub nraub qaum yog 0.016mm, thiab qhov siab tshaj plaws clearance yog 0.06mm. Thaum sib sau ua ke, lub qhov rooj yuav tsum ntsuas, thiab nws qhov cuam tshuam lossis kev tshem tawm yuav tsum tsis txhob tshaj qhov saum toj no, txwv tsis pub lub qhov rooj yuav tsum tau kho.

②. Lub nplhaib puab ntawm cov kabmob txav ib ncig. Lub nplhaib puab ntawm cov kabmob dov tau txais kev cuam tshuam zoo nrog cov ntawv sau. Qhov siab tshaj plaws cuam tshuam ntawm sab hauv txoj kab uas hla ntawm cov kabmob pem hauv ntej yog 0.055mm, thiab qhov cuam tshuam yam tsawg kawg nkaus yog 0.012mm. Qhov siab tshaj plaws cuam tshuam ntawm lub puab kab ntawm lub rear bearing yog 0.046mm, thiab qhov tsawg kawg nkaus cuam tshuam yog 0.003mm. Los ntawm kev sib koom ua ke saum toj no, yog tias cov kabmob tau raug tshem tawm thiab sib sau ua ke ntau zaus, tej zaum yuav muaj qhov sib txawv ntawm lub nplhaib puab ntawm cov kabmob thiab cov phau ntawv, cov ntawv xov xwm yuav tsum tau kho ua ntej nws tuaj yeem siv tau.

Thaum qhov haum ntawm cov kabmob thiab cov ncej yog xoob, qee cov neeg ua haujlwm saib xyuas siv embossing lossis xuas nrig ntaus ntawm qhov chaw xoob kom fluff lub npoo ntawm tus ncej nyob rau hauv ib qho kev sim kom tau ib tug nruj haum nto. Qhov no tsis tsuas yog rhuav tshem cov duab geometric ntawm cov ncej saum npoo, ua rau cov kabmob tsis tau txais qhov chaw nruab nrab ntawm qhov tseeb thaum lub sijhawm teeb tsa thiab skews, tab sis kuj yog qhov fluffed qhov kawg yuav flattened thiab dhau los ua xoob haum. Txoj kev kho kom raug yog kev zom thiab kho cov ntawv sau ua ntej, thiab tom qab ntawd txhuam los yog tshuaj tsuag cov ntawv sau.

2. Lub dov bearing tawb yog hnav, deformed los yog tawg

①. Thaum sib sau ua ke cov nplhaib sab hauv thiab sab nraud ntawm cov kabmob dov, vim muaj kev cuam tshuam loj, cov kabmob cov kabmob tau daig hauv lub rooj zaum lub nplhaib, thiab cov kabmob tawb tau yooj yim nyem thaum ua haujlwm. Yog li ntawd, kev ntsuas yuav tsum tau ua thaum lub sij hawm sib dhos kom ntseeg tau tias tus qauv cuam tshuam.

②. Lub lubrication ntawm crankshaft bearing yog txaws hom. Thaum cov kabmob tsis muaj lossis tsis muaj roj lubricating, tshwj xeeb tshaj yog thaum cov kabmob ua haujlwm ntawm cov kabmob loj, cov kabmob kub nce. Feem ntau, qhov kub ntawm lub nplhaib puab ntawm cov kabmob yog li 10 ° C siab dua li ntawm lub nplhaib sab nraud. Vim tias qhov thermal expansion ntawm lub nplhaib sab hauv thiab sab nraud yog qhov sib txawv, qhov sib txawv ntawm lub pob thiab qhov kev sib tw yuav ploj mus, thiab lub tawb zoo li yuav nyem thaum cov kabmob khiav. Yog li ntawd, thaum txhim kho cov kabmob, cov roj lubricating huv yuav tsum tau siv rau hauv txoj kev sib tw los tiv thaiv cov roj lubricating los ntawm txaws thiab ua rau kev sib txhuam qhuav.

3. Rolling bearing raceway thiab dov lub ntsiab nto tev tawm

①. Peeling tshwm sim los ntawm kev cuam tshuam load thiab alternating stress. Cov ntsiab lus dov ntawm cov kabmob thiab sab hauv thiab sab nrauv raceways yog tag nrho cov kev sib tw ntawm kev sib tw, ua rau kev hloov pauv kev sib cuag. Thaum tus naj npawb ntawm kev ntxhov siab mus txog ib qho nqi, qaug zog spalling tshwm sim ntawm qhov chaw ua hauj lwm ntawm cov khoom dov los yog sab hauv thiab sab nrauv raceways. Yog tias cov kabmob load loj dhau lawm, qhov kev qaug zog no yuav nce ntxiv. Tsis tas li ntawd, yog tias cov kabmob raug teeb tsa tsis raug thiab cov ncej yog khoov, txoj kev sib tw yuav tev tawm. Lub flywheel thiab pulley ntawm lub cav yog nruab nrog counterweights, thiab lub sij hawm rotational ntawm inertia tsim yog sib npaug nrog lub sij hawm rotational inertia ua los ntawm lub rotating ib feem ntawm lub cav. Yog hais tias lub sij hawm generated ntawm inertia tsis sib npaug, lub cav yuav vibrate zoo heev tom qab hluav taws, uas yuav ua rau kom tus xov tooj ntawm alternating stresses thiab kev ntxhov siab cycles, ua rau lub raceway thiab dov lub caij nto tev tawm ntxov ntxov.

Txhawm rau kom tsis txhob muaj kev sib tsoo ntawm qhov chaw sib tw thiab dov cov ntsiab lus, kev thauj khoom ntxiv thiab kev co tsis tsim nyog yuav tsum tau zam thaum siv, lub throttle thiab ceev yuav tsum tau siv kom tsim nyog thaum lub sijhawm ua haujlwm los tiv thaiv lub tsheb laij teb los ntawm kev sib tsoo, thiab lub cev bolts yuav tsum yog. tshuaj xyuas ntau zaus kom tsis txhob xoob.

②. Vim tias cov khoom tawv tawv sab nraud poob rau ntawm qhov sib txuam ntawm lub plhaub lossis nruab nrab ntawm qhov sib txuam ntawm cov ncej thiab lub nplhaib, cov duab ntawm txoj kev sib tw yog distorted. Cov khoom dov ua rau lub siab loj tshaj plaws ntawm no, ua rau muaj kev hnav sai thiab hlau tev ntawm txoj kev sib tw ntawm lub nplhaib. Rolling bearing yog qhov tseeb heev, uas yog rhiab heev rau txawv teb chaws. Hauv kev saib xyuas, siv ib daim ntaub huv si, tsis yog linting wiper. Cov ntaub wiper yuav tsum tsis txhob hloov nrog cov paj rwb qub, vim hais tias cov xov paj xaus rau hauv cov paj rwb qub tau yooj yim sib xyaw rau hauv cov roj lubricating thiab nkag mus rau cov kabmob, uas ua rau muaj kev phom sij heev. Ua ntej sib sau ua ke, ua tib zoo ntxuav cov ntawv xov xwm, lub qhov rooj, thiab sab hauv thiab sab nrauv ntawm cov kabmob kom tsis txhob muaj av nkag mus rau hauv qhov chaw mating.

③. Kev puas tsuaj los ntawm kev puas tsuaj rau txoj kev sib tw thaum lub sijhawm teeb tsa. Yog hais tias thaum lub sij hawm installation, lub siab thov yog kis los ntawm lub nplhaib sab nraud thiab lub pob steel, nws yuav inevitably ua rau pits nyob rau hauv qhov chaw uas lub raceway ntawm lub nplhaib hu rau lub steel pob. Cov kabmob tev tawm thiab khawb hauv lub sijhawm luv luv. Yog li ntawd, cov cuab yeej tshwj xeeb yuav tsum tau siv thaum disassembling, thiab cov khoom siv quab yuam yuav tsum raug thiab txawm.

4. Lub radial thiab axial clearance ntawm cov kabmob nce

Cov radial thiab axial clearances ntawm cov bearings nce, tshwj tsis yog rau kev sib txhuam qhuav thiab kev sib txhuam ntau dhau thiab hnav thaum pib. Nws yog tsuas yog tshwm sim los ntawm kev sib txhuam ntawm cov hlau hais nyob rau saum npoo ntawm qhov chaw thiab cov xuab zeb, plua plav thiab av nyob rau hauv cov roj lubricating ntawm lub dov cov ntsiab lus thiab raceways.

Cov kabmob muaj qhov nce ntxiv hauv qhov kev tshem tawm ntawm lub nplhaib thiab cov khoom dov vim qhov hnav tsis zoo, lub ntsej muag matte tau tsim rau ntawm txoj kev sib tw, thiab cov cim tsis sib xws tau tshwm sim. Txoj kev tiv thaiv yog hloov cov roj lubricating kom raws sijhawm, thiab lub qhov lubricating yuav tsum yog airtight kom tsis txhob nkag ntawm cov av.