Umhlahlandlela Wokukhetha Ama-Motor Bearings Wezicelo Zezimboni

Isingeniso

Ukukhetha ama-bearings enjini yezimboni kuthinta okungaphezu nje kwezikhawu zokulingana nokushintsha. I-bearings efanele kumele iphathe imithwalo ye-radial kanye ne-axial, isivinini, izinga lokushisa, izimo zokugcoba, ukungcola, futhi, ezimweni eziningi, ugesi ongalimaza imigwaqo yomjaho ngokuhamba kwesikhathi. Ukufaniswa okungekuhle kungandisa ukudlidliza, kufinyeze impilo yesevisi, kukhuphule ukusetshenziswa kwamandla, futhi kuholele ekuvalekeni okubizayo okungahleliwe. Lo mhlahlandlela uchaza izinhlobo eziyinhloko zama-bearings ezisetshenziswa kuma-motor, izici zokusebenza eziqhuba ukukhetha, kanye nokushintshana phakathi kokusebenza, ukuqina, kanye nokugcinwa ukuze wenze izinqumo ezithembekile kakhulu zezicelo zezimboni ezidingayo.

Kungani ukukhetha amabheringi ezimoto kubalulekile

Ukucaciswa kwama-motor bearings kuyisinqumo sobunjiniyela esibalulekile esinquma ukuthembeka, ukusebenza kahle, kanye nomjikelezo wokuphila kwemishini ejikelezayo yezimboni. Esebenza njengesixhumi esiyinhloko phakathi kwe-stator engashintshi kanye nomgodi ojikelezayo, ama-bearings aphatha imithwalo enamandla ngenkathi egcina izikhala zomoya eziqondile. Ezindaweni zezimboni lapho ama-motor kagesi eqhuba khona izinqubo zokukhiqiza eziyinhloko, ukukhetha ukwakheka okuhle kwama-bearings akuyona nje into yokulungisa kodwa kuyimfuneko eyisisekelo yokuqhubeka kokusebenza.

Onjiniyela kumele bahlole i-matrix eyinkimbinkimbi yeziguquguquki zemishini, ezishisayo, kanye nezikagesi ukuqinisekisa ukuthiamabheringi akhethiweingamelana nemijikelezo yokusebenza eqhubekayo. Ukukhetha okungaphansi kokufanele kusheshisa ngokushesha izindlela zokuguga, okuholela ekuhlulekeni kwangaphambi kwesikhathi, amaphrofayili aphezulu okudlidliza, kanye nomonakalo omkhulu wemoto.

Umthelela ekusebenzeni kahle kwamandla kanye nokusebenza kahle kwamandla

Ubudlelwano obuqondile phakathi kokukhethwa kwamabhereyitha kanye nesikhathi sokusebenza kwesikhungo abukwazi ukweqiswa. Ukwehluleka kwezimoto okungahleliwe ezimbonini zenqubo eziqhubekayo ezinzima, njengokuhlanza i-petrochemical noma ukukhiqizwa kwe-pulp kanye nephepha, kungabangela izindleko zesikhathi sokungasebenzi ezisukela ku-$10,000 kuya ngaphezulu kuka-$100,000 ngehora. Ngenxa yokuthi amabhereyitha abangela cishe u-40% kuya ku-50% wazo zonke izinkinga zezimoto zikagesi, yizona zinto ezisengozini kakhulu ekusebenzeni kwe-drivetrain.

Ngale kokuthembeka, ukukhethwa kwamabhere kuthinta kakhulu ukusetshenziswa kwamandla. Ukungqubuzana kwemishini ngaphakathi kwenhlangano yamabhere kuvame ukubala u-10% kuya ku-15% wokulahlekelwa okuphelele kwemishini kumoto kagesi ejwayelekile. Ngokucacisa imiklamo yesivalo esinomfutho ophansi, amajiyometri angaphakathi alungiselelwe, kanye nokuqina kokugcoba okufanele, onjiniyela banganciphisa ukumelana nokugoqa. Lokhu kunciphisa ukudonsa kwamandla okuvamile kwemoto futhi kunegalelo emiyalweni yokusebenza kahle kwamandla esikhungweni sonke.

Izimo zokusebenza eziqhuba ukukhetha

Izimo zokusebenza kwezimboni zichaza izidingo eziyisisekelo zokukhetha amabhereyi. Ukushisa okuphezulu okuzungezile kuthonya kakhulu kokubili insimbi yamabhereyi kanye nesu lokuthambisa. Isibonelo, ama-motor asebenza ezindaweni ezi-cryogenic noma ukusetshenziswa kokushisa okuphezulu eduze kwezitofu zezimboni adinga amafutha akhethekile kanye nensimbi yamabhereyi eqiniswe ukushisa ekwazi ukugcina ukuzinza kobukhulu emazingeni okushisa aqhubekayo afinyelela ku-200°C.

Ngaphezu kwalokho, ukwanda okwandayo kwama-Variable Frequency Drives (VFDs) kuletha ukucindezeleka okukhulu kukagesi kuma-motor bearings. Ama-VFD akhiqiza ama-voltage aphezulu e-common-mode voltages angabangela ukugoba kukagesi ngefilimu kawoyela we-bearing. Lesi simo, esaziwa ngokuthi i-electrical discharge machining (EDM), sidala ama-micro-crater emigwaqweni yomjaho futhi sisheshisa ukuwohloka kwamafutha. Ngaphezu kwalokho, izindawo ezinokungcola okuphezulu kwezinhlayiya noma umswakama zidinga amalungiselelo okuvala akhethekile, njenge-labyrinth seals noma i-heavy-duty contact seals, ukuvimbela ukungena kwezinto zangaphandle ezizolimaza ngokushesha izinto ezigoqayo.

Imininingwane ebalulekile kanye nezidingo zohlelo lokusebenza

Ukuhumusha izidingo zokusebenza zibe yimingcele ethile yokuthwala kudinga ukuhlolwa okuqinile kwezincazelo zemishini. Onjiniyela kumele balinganisele amandla omthwalo, imikhawulo yesivinini se-kinematic, kanye nemikhawulo yokushisa ukuze bathole i-bearing ezofeza impilo yokukhathala ye-L10h efiselekayo.

Umthwalo, isivinini, izinga lokushisa, kanye nezici zokugcoba

Amapharamitha omthwalo ahlukaniswe ngama-radial kanye nama-axial force. Isilinganiso somthwalo oguquguqukayo (C) kanye nesilinganiso somthwalo omile (C0) sinquma ikhono lebhere lokusingatha lezi zingcindezi zokusebenza ngaphandle kokuvumela. Amakhono esivinini ahlolwa kusetshenziswa inani le-ndm lebhere (ububanzi obuphakathi bokuthwala obuphindaphindwe ngesivinini esijikelezayo), okunquma i-RPM ephezulu evunyelwe ngaphambi kokuba amandla e-centrifugal kanye nokushisa okubangelwa ukungqubuzana kudlule imikhawulo ephephile.

Izinga lokushisa kanye nokuthambisa kuxhumene ngokungenakuhlukaniswa. Insimbi ejwayelekile yokuthwala (100Cr6) ivame ukuzinza ngokwezinga ukuze isebenze kuze kufike ku-120°C, kodwa ukwelashwa kokushisa okukhethekile kuyadingeka ukuze kube nemingcele ephezulu. Ukukhethwa kokuthambisa kumele kubhekele i-oyili eyisisekelo emazingeni okushisa okusebenza, kuqinisekiswe ukuthi kugcinwa ubukhulu obanele befilimu ye-elastohydrodynamic (EHL) ukuze kuhlukaniswe izinto ezigoqekayo nemigwaqo yokugijima.

Imiklamo yamabhere, izindawo zokuvula, kanye nezinto zokwakha amakheji

Ukususwa kwangaphakathi kuyipharamitha ebalulekile yokuklama, ikakhulukazi kuma-motor kagesi. Ukususwa kwangaphakathi kwe-radial kumele kuhambisane nokwanda kokushisa kwe-shaft kanye nendandatho yangaphakathi ngesikhathi sokusebenza. Ngenxa yalokho, ukususwa kwe-C3 (okukhulu kunokuvamile) kuyincazelo ejwayelekile yama-bearings amaningi ezimoto zezimboni, okuvumela umehluko wokushisa ophakathi kuka-10°C kuya ku-15°C phakathi kwama-rings angaphakathi nangaphandle ngaphandle kokubangela ukulayisha kwangaphambili okubhubhisayo.

Ukukhethwa kwezinto zekheji kuqhubeka nokuthuthukisa ukufaneleka kwebheyari ezindaweni ezithile. Izinhlelo zokusebenza ezijwayelekile zivame ukusebenzisa amakheji ensimbi agxiviziwe ngenxa yokuqina kwawo kanye nokusebenza kahle kwezindleko. Kodwa-ke, izinhlelo zokusebenza zesivinini esikhulu noma lezo ezidingaamaphrofayili omsindo ophansisebenzisa njalo amakheji e-polyamide (PA66) aqiniswe nge-glass-fiber, anikeza izakhiwo ezinhle kakhulu zokushelela kanye nokunwebeka. Ngezinhlelo zokusebenza ezisindayo noma ezidlidliza kakhulu, amakheji ethusi akhiwe ngomshini anikeza ubuqotho besakhiwo obuphezulu, yize emele izindleko zokuqala eziphezulu.

Izindlela zokuqhathanisa izinhlobo ezivamile zokuthwala

Ama-motor kagesi ngokuvamile athembele ekuhlanganisweni kwemiklamo yokuthwala kuye ngobukhulu bawo, ukuqondiswa kokufakwa, kanye nendlela yokuxhuma. Ukuqonda amandla okuqhathanisa ale miklamo kubalulekile ekwenzeni ngcono iziphetho zokushayela kanye nezingashayelwanga zeshaft yemoto.

Ama-bearings ebhola ajulileyizona zikhetho ezitholakala yonke indawo zama-motor amancane kuya kwaphakathi ngenxa yokuguquguquka kwawo kanye namakhono esivinini esikhulu. Ama-roller bearings e-cylindrical achazwe ekugcineni kokushayela kwama-motor amakhulu abhekene nemithwalo esindayo ye-radial, njengalawo mabhande ezimboni ashayelayo. Ama-contact bearings e-angular ayadingeka kakhulu kuma-motor e-vertical pump lapho imithwalo ye-axial thrust eqhubekayo, esindayo kufanele isekelwe khona.

Indlela yokuqhathanisa izinketho zama-motor bearings

Ukuqhathanisa izinketho zokuthwala kudinga ukubheka ngale kokuhambisana okuyisisekelo. Umehluko omncane kubuchwepheshe bokufudumeza, amakilasi okunemba, kanye nezidingo zokugcinwa kwesikhathi eside kunquma inani langempela kanye nokusebenza kwengxenye ngaphakathi kohlelo lwezimboni.

Amabheringi ajwayelekile vs afakwe uthayela

Ukwanda kwama-motor asebenzisa i-inverter kwenze ukukhetha phakathi kwama-bearings ajwayelekile kanye nama-insulation kwaba yisinqumo esibalulekile. Ama-bearings ajwayelekile ensimbi awanikeli ukumelana nemisinga ye-shaft ebangelwa yi-VFD, okwenza abe sengozini enkulu yokuqhuma kwe-flute kanye nokwehluleka kusenesikhathi ezinhlelweni eziqhutshwa yi-inverter.

Ama-insulated bearings anciphisa le ngozi ngokusebenzisa ubuchwepheshe obubili obuyinhloko. Ama-bearings ambozwe nge-ceramic aqukethe ungqimba lwe-aluminium oxide (ngokuvamile ubukhulu obungu-50 kuya ku-100 µm) olufakwa eringini yangaphandle noma engaphakathi, oluhlinzeka nge-voltage encane yokuqhekeka engu-1,000V DC. Kuma-currents aphezulu kakhulu, ama-hybrid bearings asebenzisa izakhi zokugoqa ze-silicon nitride (Si3N4) ayachazwa. Ngenkathi ama-hybrid bearings angabiza ama-300% kuya ku-500% ngaphezu kwezinhlobo ezijwayelekile, ukuhlukaniswa kwawo kagesi okuphelele kanye nokumelana nokuguguleka okuphezulu kuwenza abe yisisombululo esiqondile sezinhlelo zokusebenza ezibalulekile ze-VFD.

Ukunemba, umsindo, ukudlidliza, kanye nokulingana

Izindinganiso zokunemba zithinta ngqo ukusebenza kwe-acoustic kanye nokudlidliza kwenjini. Ama-bearings akhiqizwa ngokwezigaba ezithile zokubekezelelana, njenge-ISO P0 (Normal), P6, noma i-P5, ezihambisana nezindinganiso ze-ABEC 1, 3, kanye ne-5. Ama-bearings ekhwalithi yemoto kagesi (EMQ) athuthukiswa ngokukhethekile ukuze abhekane nokubekezelelana okuqinile ukuze kuncishiswe ukugijima nokuqinisekisa ukusebenza kahle.

Umsindo nokudlidliza kulawulwa ngokwengeziwe ngezinqubo zokukhiqiza eziqinile. Ama-motor bearings avame ukuhlukaniswa ngezigaba zokudlidliza (isb., V1, V2, V3), kanti i-V3 imele ijubane lokudlidliza eliphansi kakhulu. Ukulingana okufanele kwe-shaft kanye ne-housing—ngokuvamile ukulingana kokuphazamiseka ku-rotation shaft (isb., k5 noma m5 tolerances) kanye nokushintsha noma ukulingana okuxekethile endlini engashintshi (isb., H6 noma J6)—kuyimpoqo ukuvimbela ukugqwala okubangelwa ukugqwala ngenkathi kuvumela ukwanda kokushisa kwe-axial.

Izindleko zomjikelezo wokuphila ezingaphezu kwentengo yeyunithi

Izinqumo zokuthenga eziqhutshwa kuphela yintengo yeyunithi zivame ukuholela ezindleleni zomjikelezo wokuphila ezikhuphukile. I-deep groove ball bearing ejwayelekile ingaba nezindleko zeyunithi ezingama-$50, kodwa umsebenzi, ukuhlelwa kwemishini, kanye nesikhathi sokukhiqiza esilahlekile esidingekayo ukuze kushintshwe kungadlula kalula u-$5,000 ngomcimbi ngamunye.

Onjiniyela kumele bahlole Izindleko Zobunikazi Eziphelele (i-TCO), ezihlanganisa intengo yebheyari, impilo elindelekile yamahora angu-L10, izikhawu zokuphinda kufakwe uketshezi, kanye nezindleko zesikhathi sokungasebenzi. Ukutshala imali kubheyari ye-hybrid ye-premium noma iyunithi evaliwe impilo yonke ngeigrisi yokwenziwa esebenza kahle kakhulungokuvamile kuveza imbuyiselo enhle ekutshalweni kwezimali phakathi neminyaka emibili yokuqala yokusebenza ngokwandisa izikhawu zokulungisa kusukela emahoreni angu-4,000 kuya emahoreni angaphezu kuka-12,000.

Inqubo yokukhetha nokuqalisa

Indlela yokukhetha eqinile kumele ihambisane nokusetshenziswa okungenaphutha. Ngisho nebheri eklanywe kahle kakhulu izohluleka ngaphambi kwesikhathi uma isetshenziswa ngendlela engafanele, ingagcinwa kahle, noma imikhuba emibi yokugcoba.

Uhlelo lokusebenza lokukhetha isinyathelo ngesinyathelo

Ukuhamba komsebenzi wokukhetha kuqala ngokuchaza amapharamitha ohlelo lokusebenza: amandla enjini, i-RPM, ukuqondiswa kokufakwa, kanye nohlobo lokuxhuma. Okulandelayo, onjiniyela babala umthwalo olinganayo wokuthwala onamandla, bebheka isisindo se-rotor kanye namandla angaphandle njengokucindezeleka kwebhande. Le datha isetshenziselwa ukubala impilo yokukhathala ye-L10h yethiyori, ihlose izinga lemboni lamahora angu-40,000 kuya ku-100,000 ezinjini zezimboni eziqhubekayo.

Uma usayizi wesisekelo kanye nohlobo sekuqinisekisiwe, umsebenzi uyaqhubeka nokushintshashintsha kwemvelo. Lokhu kufaka phakathi ukukhetha indawo efanele yokuvula yangaphakathi (ngokuvamile i-C3), ukunquma isidingo sokufakwa kokushisa kagesi, kanye nokucacisa uhlobo lwegrisi olufanele kanye nevolumu yokugcwalisa ngokusekelwe ekushiseni kokusebenza kanye nesivinini.

Imikhuba yokufaka, yokugcina, kanye nokugcoba

Izinqubo zokufaka zinquma impilo yokuqala yebhereyitha. Ukufakwa okubandayo ngomshini wokucindezela kuyamukeleka kumabhereyitha amancane, kodwa ukushisa kwe-induction kuyadingeka kumasongo amakhulu angaphakathi ukuze kufezwe ukulingana okudingekayo kokuphazamiseka. Ibhereyitha kufanele ifudunyezwe cishe ku-90°C kuya ku-110°C—ingadluli nhlobo ku-120°C ngensimbi ejwayelekile—ukuvimbela umonakalo wensimbi.

Izimo zokugcina nazo zithinta ubuqotho be-bearing. Ama-bearing kumele agcinwe ekupakishweni kwawo kokuqala, okungavulwanga endaweni elawulwa yisimo sezulu enomswakama ongaphansi kuka-60% ukuvimbela ukugqwala okuncane. Lapho upakisha i-bearing evulekile, ivolumu yokugcwalisa i-grease ibalulekile; kuma-motor kagesi, ukugcwalisa okungu-30% kuya ku-50% wesikhala esikhululekile kuyinto ejwayelekile. Ukugcoba ngokweqile kubangela ukugoqa, ukukhuphuka kwezinga lokushisa okusheshayo, kanye nokwehluleka kwangaphambi kwesikhathi kwe-greasing.

Ukuqapha kanye nokulungisa isimo

Isebenza ngokusheshaukuqapha isimoKubalulekile ekwandiseni impilo yokuthwala kanye nokuvimbela ukuphuma okungahleliwe. Ukuhlaziywa kokudlidliza kuyithuluzi eliyinhloko lokuxilonga, kusetshenziswa ama-accelerometer ukuthola amaphutha okuthwala esigaba sokuqala (uhlanga lwangaphakathi, uhlanga lwangaphandle, noma amaphutha ezinto ezigingqikayo) ngokusebenzisa amasu okusheshisa okumboza. Izindinganiso ze-ISO 10816 zinikeza iziqondiso zokudlidliza kwenjini okwamukelekayo, ngokuvamile ezidinga amazinga ejubane le-RMS ngaphansi kuka-1.12 mm/s kuya ku-2.8 mm/s, kuye ngesigaba senjini kanye nokuqina kokufakwa.

Ukuhlolwa kokukhishwa kwe-acoustic kanye nokuqapha kwe-ultrasonic kungabona ukungqubuzana okuvama kakhulu okubonisa ukugcotshwa okungekuhle isikhathi eside ngaphambi kokuba kuvele ukungalingani kokudlidliza. Ukugcinwa okuvamile kumele kufake phakathi imikhuba yokuphinda kugcotshwe ngendlela efanele, kusetshenziswa uhlobo olufanele lwamafutha kanye nevolumu ngezikhathi ezibalwe. Amaqembu okulungisa kumele futhi agweme ukuxuba izithina zamafutha ezingahambisani (isb. i-polyurea ne-lithium complex), okuholela ekuqineni okubi noma ekuncibilikeni kwe-lubricant.

Indlela yokuhlola abahlinzeki nokwenza isinqumo sokugcina

Isigaba sokugcina sokucaciswa kwamabhereyi sihilela ukuhlola uchungechunge lokuhlinzeka. Ukuthola amabhereyi ezimboni kudinga ukubambisana neabakhiqizi nabasabalalisiikwazi ukuletha ikhwalithi yensimbi ehambisanayo, idatha yobunjiniyela eqinisekisiwe, kanye ne-logistics ethembekile.

Iziqu zomhlinzeki kanye nemibhalo yekhwalithi

Iziqu zomhlinzeki kumele zisekelwe ezindinganisweni zokuphathwa kwekhwalithi eziqinile. Abakhiqizi be-Tier-one bearing basebenza ngaphansi kwezitifiketi ze-ISO 9001 kanye ne-IATF 16949, okuqinisekisa ukulawulwa kwenqubo okuqinile. Abathengi kufanele bafune imibhalo ephelele yekhwalithi, kufaka phakathi izitifiketi zezinto ze-EN 10204 3.1, ukuqinisekisa ukuhlanzeka kwensimbi kanye nokwakheka kwamakhemikhali okunembile.

Amanani amaphutha ayisilinganiso esibalulekile sokuhlola ikhono lomhlinzeki. Abahlinzeki bezinsimbi zezimboni ze-premium bavame ukugcina amazinga amaphutha angaphansi kakhulu kwezingxenye ezingama-50 ngesigidi (PPM). Ngaphezu kwalokho, umhlinzeki kumele abonise izindlela zokuvimbela mbumbulu eziqinile, njengoba amabhethri mbumbulu angeniswa ngeziteshi zokusabalalisa ezingagunyaziwe abeka ingozi enkulu yokuphepha nokuthembeka emisebenzini yezimboni.

Uhlaka lwezinqumo zokufaneleka kobuchwepheshe, isikhathi sokuhola, kanye nezindleko

Ukukhetha umhlinzeki wokugcina kudinga ukulinganisela ubuhle bezobuchwepheshe namaqiniso ezentengiselwano. Ukusekelwa kobunjiniyela bezicelo kuyisici esibalulekile sokuhlukanisa ubuchwepheshe; abahlinzeki abanganikeza ukuhlaziywa kwe-finite element okuthuthukisiwe (i-FEA) kanye nezincomo zokugcoba ezenziwe ngokwezifiso banezela inani elibalulekile ngale komkhiqizo ongokoqobo.

Izikhathi zokuhola zithonya kakhulu i-matrix yezinqumo zokugcina.

Izinto Ezibalulekile Okufanele Uzicabangele

• Iziphetho ezibaluleke kakhulu kanye nesizathu sama-motor bearings
• Imininingwane, ukuhambisana, kanye nokuhlolwa kwengozi okufanele kuqinisekiswe ngaphambi kokuthi uzibophezele
• Izinyathelo ezilandelayo ezisebenzayo kanye nezixwayiso abafundi abangazisebenzisa ngokushesha

imibuzo ejwayelekile ukubuzwa

Yiluphi uhlobo lokuthwala oluvame kakhulu ukusetshenziswa kwezimoto zezimboni?

Ama-bearings ebhola ajulile ayisinqumo sokuqala esivamile sama-motor kagesi ngoba aphatha kahle isivinini esiphezulu, umsindo ophansi, kanye nemithwalo ye-radial/axial ephakathi nendawo.

Kufanele ngikhethe nini i-C3 clearance ye-motor bearing?

Sebenzisa i-C3 clearance kuma-motor amaningi ezimboni lapho ukushisa kwe-shaft kwandisa khona indandatho yangaphakathi. Kuyasiza ekuvimbeleni ukulayisha kusengaphambili kanye nokushisa ngokweqile ngesikhathi sokusebenza okuqhubekayo.

Ama-VFD athinta kanjani ukukhethwa kwamabhere enjini?

Ama-motor aqhutshwa yi-VFD angadinga ama-bearings e-ceramic afakwe i-insulation noma i-hybrid ukuze kuncishiswe umonakalo wokukhishwa kukagesi. Lokhu kubaluleke kakhulu emishinini yesivinini esikhulu noma ebaluleke kakhulu.

Yiziphi izinto ezibaluleke kakhulu lapho ukhetha i-motor bearing?

Hlola umthwalo, isivinini, izinga lokushisa lokusebenza, izinga lokungcola, indlela yokugcoba, nokuthi imoto isebenzisa i-VFD yini. Lokhu kunquma uhlobo lwebhereyitha, indawo evulekile, izivalo, kanye nezinto zekheji.

Ingabe i-DEMY Bearings ingasiza ama-OEM kanye nabathengi bezimboni ukuthola ama-motor bearings afanele?

Yebo. I-DEMY Bearings inikeza ububanzi obukhulu bokuthwala izimoto ngokusekelwa kwekhathalogi ye-e, okusiza ama-OEM kanye nabasabalalisi ukuthi bahambisane nemininingwane yesivinini, umthwalo, umsindo, kanye nempilo yesevisi.