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Amabheringi enjini ye-Aero

Ukuthwalauhlobo

Ijubane le-spindle yenjini ye-aero liphezulu, izinga lokushisa lokushisa eliphezulu liphezulu, kanyeibhereidinga ukuthwala umthwalo we-axial kanye nomthwalo we-radial, ngakho-ke i-bearing ihlukaniswe ngezigaba ezimbili: i-thrust fulcrum bearing kanye ne-swimming fulcrum bearing: i-thrust fulcrum bearing ivame ukusebenzisa i-three-point angular contact ball bearing ukuthwala umthwalo we-axial nokulawula ukucaciswa kwe-axial kwe-stator ejikelezayo; Ama-bearing fulcrum bearing ahambayo athwala imithwalo ye-radial kuphela, futhi ngoba i-rotor izohamba ohlangothini lwe-axial ngenxa yokwanda nokuncipha kokushisa,amabheringi e-cylindrical rollerNgokuvamile kusetshenziswa imingcele engadingi mingcele endandatho engaphandle noma engaphakathi.

 

Ama-gearbox e-Aero engine avame ukuqhutshwa ngamagiya e-spur, kanti ama-bearings athwala imithwalo ye-radial kuphela kanti ukwanda kokushisa kwe-rotor kuncane, ngakho-keamabheringi e-cylindrical rollerfuthiamabheringi ebhola elijulilezikhethwa kakhulu.

 

Ibhokisi legiya elinciphisa amandla lidlulisa amandla amaningi, amanye awo asebenzisa amagiya ajikelezayo, kanti amabheringi kudingeka athwale imithwalo ye-radial kanye ne-axial, ngakho-keamabheringi e-cylindrical roller, amabheringi ebhola elijulilekanye namaphuzu amathathuamabheringi ebhola lokuxhumana eliyi-angularzikhethwa kakhulu.

 

Izinjini ze-Aero zisebenzisa ama-bearings e-angle contact ball contact anezingqimba ezintathu kanyeamabheringi e-roller ayisilinda.

Ama-bearings ebhola lokuxhumana elinama-angle amathathu

Uma injini ye-aero isebenza, umthwalo we-radial kanye nomthwalo we-axial kuzokhiqizwa ku-spindle, futhi isethi yama-ball bearings ngokuvamile abekwa endaweni eqondile phambi kwe-spindle ukuze athwale umthwalo we-radial owakhiwe yi-superposition yamandla angalingani we-shaft ngayinye kanye nokujikeleza kwesivinini esikhulu, futhi ngesikhathi esifanayo athwale umehluko womthwalo we-axial phakathi kwamandla omoya we-fan kanye ne-compressor phambili kanye namandla omoya abuyela emuva e-turbine.

 

Uma kuqhathaniswa isakhiwo sama-deep groove ball bearings kanye nama-three-point angular ball bearings, isikhungo se-inner ring groove ye-three-point angular contact ball bearing sihlonyiswe nge-axial eccentricity Lo, okwenza i-axial clearance yayo i-Ga kanye nenani le-rotor ohlangothini lwe-axial kube lula futhi kube lula ukulawula i-axial clearance ye-rover ejikelezayo yenjini.

 

Ibhereyitha yebhola lokuxhumana eliyi-angular elinamaphoyinti amathathu linesakhiwo sendandatho esiphindwe kabili esiphakathi, futhi ukwakheka kwayo okuhlukaniseka kwendandatho engaphakathi kancane kuvumela ukufakwa kwamabhola engeziwe, okwandisa kakhulu umthamo wokuthwala.

 

Uma kuqhathaniswa isakhiwo sama-angular contact ball bearing kanye nama-three-point angular contact ball bearing, ama-angular contact ball bearing angathwala imithwalo ye-axial yendlela eyodwa kuphela, uma edinga ukuthwala imithwalo ye-axial ye-bidirectional, adinga ukuhlanganiswa, okuzothatha isikhala esiningi futhi kwandise ubunzima; Amasongo angaphakathi aphindwe kabili nengxenye ama-three-point angular contact ball bearing angathwala ngqo imithwalo ye-axial ye-bidirectional, engonga cishe u-50% wesikhala kanye nekhwalithi uma kuqhathaniswa nomugqa ophindwe kabili noma iqembu lama-angular contact ball bearing asekelayo, futhi kulula ukuyifaka, okulula ukuklanywa kwenjini.

 

Ikheji kanye nokuhlanganiswa kwebhola kwebheyari yebhola yokuxhumana enamaphuzu amathathu kungahlukaniswa nendandatho yangaphandle, ngakho-ke ikheji eliqinile eliyisiqephu esisodwa lingasetshenziswa, elinamandla aphezulu, lifanele isivinini esikhulu sokujikeleza, futhi kulula ukuthola ukunemba okuphezulu komshini; Ngesikhathi esifanayo, isakhiwo senza ukufakwa nokuhlolwa kwamabheyari kube lula kakhudlwana.

 

Ama-roller bearings e-cylindrical

Uma kuqhathaniswa nama-roller bearings ajwayelekile e-cylindrical roller, ububanzi be-roller bearings ye-aero engine cylindrical roller buncane, futhi izinzuzo zalo zimi kanje:

1) Kunganciphisa ukumelana kokuxubha uwoyela kwe-roller ngesikhathi sokusebenza ngesivinini esikhulu;

2) Amandla angaphakathi mancane;

3) Ingcindezi yokuxhumana eyanele ingagcinwa lapho amandla e-radial emancane ukuze kugwenywe ukushelela kwe-roller;

4) Njengoba izingxenye ze-ferrule, i-roller kanye ne-cage zingahlukaniswa, i-cage eqinile ingasetshenziswa, enamandla angcono kanye nokuqina kwesivinini esikhulu.

 

Ama-roller bearings e-cylindricalUma kungekho flange endandatho yangaphakathi, ngokuvamile inobubanzi obukhulu bendandatho yangaphakathi ukuze ivumelane nokunyakaza kwe-axial phakathi kwezindandatho zangaphakathi nezangaphandle okubangelwa ukwanda okubangelwa ukwanda kokushisa phakathi kweshaft kanye nendandatho yangaphakathi yebhereyi, kanye nokungahambisani kahle phakathi kwezindandatho zangaphakathi nezangaphandle okubangelwa iphutha le-axial assembly yenhlangano ye-rotor ngesikhathi sokuhlanganiswa. Uma isikhala sokufakwa sincane noma kunezidingo ezikhethekile, ishaft noma indlu yebhereyitha ingasetshenziswa ngqo esikhundleni sendandatho yangaphakathi engenaflange.

 

Injini ye-Aeroamabheringi e-cylindrical rollerbavame ukubhekana nezimo zokusebenza zomthwalo omncane noma ongenawo nhlobo we-radial womthwalo we-radial, futhi isivinini sokujikeleza siphezulu kakhulu, ama-roller athambekele ekusheleleni nasekuhlikihleni, ukuze kuvinjelwe ukushelela, imigwaqo yomjaho engajikelezi ivame ukusetshenziswa ukufeza umthwalo wangaphambi kwe-radial we-bearing, futhi ukusatshalaliswa komthwalo kwama-bearing amabili ajwayelekile angajikelezi kuvame ukusetshenziswa.

 

Izinto zokuthwala

Izinga lokushisa lendawo yokusebenza le-turbine bearing yenjini liphezulu kakhulu, futhi ngokuvamile kuyadingeka ukupholisa i-bearing ngomthamo wamafutha okugcoba angamalitha amaningana ngomzuzu, kodwa izinga lokushisa lokusebenza le-bearing lingafinyelela cishe ku-250 °C.

 

Ukuze kuhlangatshezwane nezimo zokusebenza zokushisa okuphezulu, indandatho yokuthwala ivame ukusebenzisa insimbi engu-8Cr4Mo4V (M50) kanye nenye insimbi yokuthwala eshisa kakhulu, futhi iphathwa ngokushisa okuphezulu, noma ngabe izinga lokushisa lokuthwala lifinyelela ku-400 °C ngemva kokuba injini imisiwe, isengaqinisekisa ukusebenza kwe-bearing. Ukuze kuhlangatshezwane nokuphila kokukhathala okugoqekayo, ubulukhuni bomphezulu wezinto zokuthwala ngokuvamile kudingeka bungabi ngaphansi kuka-60 HRC ekushiseni kwegumbi, kanti insimbi iyonke engu-8Cr4Mo4V iqiniswa ukwelashwa kokushisa, kodwa ubulukhuni buphansi kunobo bezinto zokwakha, okuzoholela ekuqhekekeni kwe-ferrule lapho amandla e-centrifugal e-ferrule kanye nokucindezeleka okujikelezayo kwe-shaft kukhulu. Ngakho-ke, inani le-dn lidlula u-2.5×106 mm · ama-r/min ama-bearing kudingeka enziwe ngezinto ze-G13Cr4Mo4Ni4V (M50NiL), ezinobulukhuni obungcono bomgogodla.

 

Izinto zekheji zama-bearings enjini ye-aero ngokuvamile zenziwe ngensimbi yesakhiwo efana ne-40CrNiMoA (4030), futhi ikheji idinga ukufakelwa isiliva ukuze kuncishiswe ukuguguleka ngesikhathi sokuqala. Into egingqikayo ifana nezinto ze-ferrule, futhi ubulukhuni bayo ngokuvamile bufana nobe-ferrule, futhi kwezinye izimo buzoba ngaphezu kwe-1 ~ 2 HRC kune-ferrule. Ngezinye izikhathi ibhola lisebenzisa nezinto ze-ceramic ezifana ne-silicon nitride, i-alumina, ne-zirconia.