kho lub ntsiab ntsiab lus ntawm crankshaft hauv nws pib diesel cav

Lub crankshaft yog lub ntsiab rotating ib feem ntawm lub cav. Tom qab cov pas txuas txuas tau teeb tsa, nws tuaj yeem hloov qhov nce thiab nqis (reciprocating) ntawm tus pas txuas txuas mus rau hauv lub voj voog (rotating). Yog li ntawd, cov khoom siv crankshaft yuav tsum muaj lub zog txaus, muaj kev cuam tshuam siab toughness thiab qaug zog. , feem ntau txais cov qauv carbon
Ua los ntawm hlau los yog hlau ductile. Kev sib hloov ntawm lub crankshaft yog lub zog ntawm lub cav. Thaum lub crankshaft tawg, lub tsheb yuav poob zog thiab tsis tuaj yeem khiav mus ntxiv.
Crankshaft Maintenance tseem ceeb
Thaum lub cav diesel raug kho, lub crankshaft yuav tsum tau kuaj xyuas los ntawm kev kuaj xyuas qhov tsis zoo, thiab demagnetization yuav tsum tau ua tom qab kuaj pom qhov tsis zoo. Tom qab ntawd ua cov kev kuaj hauv qab no. Txheeb xyuas qhov hnav, khawb thiab kub hnyiab ntawm qhov chaw thrust ntawm lub ntsiab phau ntawv xov xwm, txuas qws phau ntawv journal thiab thrust journal. Yog tias muaj kev puas tsuaj, nws yuav tsum tau ua hauv av raws li cov txheej txheem kev cai. Txheeb xyuas cov ntawv sau roj hauv ntej thiab nram qab, yog tias muaj khawb, hnav grooves, thiab lwm yam, lawv yuav tsum yog hauv av. Xyuas cov kabmob nto thiab hloov nws yog tias muaj qhov tsis xws luag xws li kev puas tsuaj, tev lossis hnav hnyav. Txheeb xyuas tus thawj coj ntawm cov kabmob, yog tias puas lossis deformed, hloov cov kabmob. Nws tuaj yeem pom los ntawm kev ua haujlwm ntawm lub crankshaft tias lub crankshaft bears lub zog loj thiab khoov lub sijhawm thaum lub sijhawm tig, thiab cov ntawv xov xwm tseem ceeb thiab cov ntawv xov xwm txuas txuas ua haujlwm nyob rau hauv cov xwm txheej ntawm kev sib txhuam. Ntxiv nrog rau qhov hnav thiab tsim kua muag ntawm lub crankshaft, yuav muaj qee qhov kev puas tsuaj uas cuam tshuam rau kev ua haujlwm ntawm lub cav diesel. Cov kev tsis xws luag thiab kev puas tsuaj ntawm lub crankshaft muaj xws li cov ntaub ntawv hnav, khoov, sib tw, tawg thiab tawg.
Overhaul ntawm Crankshaft Cracks
Lub ntsiab yog vim li cas rau crankshaft tawg yog kev nyuaj siab concentration. Ua ntej, lub fillet ua luaj li cas (fillet radius) nruab nrab ntawm cov phau ntawv journal thiab lub crank yog heev me me, uas yog nquag muaj kev nyuaj siab concentration. Qhov thib ob yog qhov kev ntxhov siab ntawm kev sib txuas ntawm lub crank thiab phau ntawv xov xwm vim qhov "ntse" hloov ntawm cov duab ntawm qhov hloov pauv. Qhov thib peb yog tias thaum cov ntawv xov xwm saum npoo yog qhov siab-zaum quenched, vim yog vim li cas thev naus laus zis, lub zog qaug zog ntawm cov fillet ib feem ntawm phau ntawv journal yog txo. Qhov thib plaub yog tias cov fillet ntawm cov ntawv xov xwm tsis du thiab qhov chaw yog ntxhib, ua rau muaj kev ntxhov siab ntau. Thib tsib, tsis muaj kev hloov pauv ntawm cov roj qhov ntawm qhov chaw ntawm phau ntawv xov xwm. Cov roj hla yog inclined raws axial kev taw qhia, ua rau muaj kev ntxhov siab concentration ntawm cov roj qhov. Tsis tas li ntawd, thaum lub crankshaft vibrates thiab twists thaum lub sij hawm ua hauj lwm, cov kab nrib pleb ntawm crankshaft yuav nce, thiab thaum lub radial tawg loj heev, nws yuav ua rau lub crankshaft tawg.
Lub zog flaw detector tuaj yeem tshawb xyuas los ntawm cov roj immersion thiab khob txoj kev. Soak lub crankshaft nyob rau hauv kerosene rau ib pliag, ces tshem tawm lub crankshaft thiab so nws huv si, sprinkle talcum hmoov rau ntawm qhov chaw, thiab ntaus cov tsis ua hauj lwm nto ntawm lub crankshaft nrog ib tug rauj. Roj stains, uas yog, tawg. Crankshaft tawg feem ntau tshwm sim nyob rau hauv lub fillet ntawm kev hloov ntawm lub crank thiab phau ntawv journal thiab nyob rau hauv cov roj qhov, vim hais tias cov duab ntawm cov chaw no hloov sharply, ua rau muaj kev ntxhov siab heev concentration thiab tawg. Cov qub yog radial tawg, uas yog qhov tsis zoo: qhov tom kawg yog qhov tawg ntawm axial, uas txhim kho raws axial kev taw qhia raws cov roj qhov. Yog tias qhov tawg ntawm qhov axial tsis tawg mus rau qhov sib npaug ntawm ob qhov kawg lossis ntawm ntug ntawm lub qhov roj, nws raug tso cai kom muaj nyob: qhov tawg ntawm cov ntawv xov xwm tuaj yeem raug tshem tawm tom qab polishing Nws raug tso cai siv txuas ntxiv, txwv tsis pub nws yuav tsum hloov.
Kev tshuaj xyuas thiab kho ntawm Crankshaft dabtsi yog khoov
Ua ntej lub crankshaft polished, xyuas nws cov kev kho mob ua ntej. Txhawm rau txheeb xyuas qhov dabtsi yog khoov ntawm lub crankshaft, feem ntau, cov ntawv xov xwm tseem ceeb ntawm ob qho kawg ntawm lub crankshaft tau txais kev txhawb nqa ntawm lub platform nrog "V"-shaped hlau blocks lossis ob qhov kawg ntawm lub crankshaft tau txais kev txhawb nqa ntawm lub tshuab dhos, thiab xyuas nrog lub xov tooj. ntsuas. , muab lub dial gauge stylus vertically tiv thaiv lub ntsiab lus thib peb, maj mam tig lub crankshaft, thiab xyuas qhov sib txawv ntawm qhov kev nyeem ntawv siab tshaj plaws thiab qhov tsawg kawg nkaus nyeem ntawm dial gauge, yog tias nws siab tshaj 0.06mm, nws yuav tsum raug kho. . Txias xovxwm ncaj nraim rau ntawm lub txaj, thiab cov crankshafts me me kuj tseem tuaj yeem ncaj rau ntawm lub tshuab tshwj xeeb. Ua ntej straightening, raws li qhov khoov tshuaj ntsuam ntawm lub crankshaft, siv chalk los kos lub siab tshaj plaws dabtsi yog khoov kev taw qhia ntawm txhua phau ntawv journal. Siv lub siab nrog lub xovxwm (los yog lub tsho) ntawm qhov taw tes ntawm qhov khoov loj tshaj plaws
Alignment, tso lub dial taw qhia rov qab mus rau qhov chaw siab. Thaum straightening, maj mam nce siab kom cov kab nruab nrab ntawm lub crankshaft khoov mus rau sab nraud los ntawm 10.15 npaug ntawm qhov siab tshaj qhov sib txawv ntawm lub crankshaft. Tom qab li 10 feeb, tshem tawm cov quab yuam thiab xyuas nrog lub ntsuas ntsuas. Yog hais tias nws tsis yog kiag li straightened, pressurize dua tab sis qhov siab tshaj plaws elastic bending deformation ntawm lub crankshaft tsis tshaj 6 ~ 15mm kom txog rau thaum lub straightness ntawm lub crankshaft raug kho mus rau qhov yuav tsum tau ntau yam. Yog tias tsis muaj xovxwm, koj tuaj yeem kho nws ntawm lub tog raj kheej thaiv: muab lub tog raj kheej thaiv rau pem hauv ntej, muab cov kabmob qub rau ntawm cov kabmob rooj zaum ntawm lub hauv ntej thiab nram qab kawg, thiab tom qab ntawd muab lub crankshaft: muab cov kabmob qub rau ntawm lub ntsiab. phau ntawv nyob ze qhov nkhaus tshaj plaws. Rau cov kabmob npog, ceev cov kabmob npog sib npaug nrog bolts thiab khaws cia rau qee lub sijhawm kom ua tiav lub hom phiaj ntawm kev kho.