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Bearings na injin Aero

Bearingnau'in

Gudun sandar injin Aero yana da girma, zafin zafi yana da yawa, kuma zafin injin yana da yawahaliyana buƙatar ɗaukar nauyin axial da nauyin radial, don haka bearing ɗin ya kasu kashi biyu: bearing na put fulcrum da bearing na ninkaya: bearing na put fulcrum yawanci yana amfani da bearing na lamba mai maki uku don ɗaukar nauyin axial da kuma sarrafa sharewar axial na stator mai juyawa; Bearings na tafiya fulcrum suna ɗaukar nauyin radial ne kawai, kuma saboda rotor zai motsa a cikin alkiblar axial saboda faɗaɗawa da matsewar zafi,bearings na silindaba tare da iyaka a kan zoben waje ko na ciki ba yawanci ana amfani da su.

 

Akwatunan kayan haɗin injin Aero yawanci ana tuƙa su ne ta hanyar giyar spur, kuma bearings suna ɗaukar nauyin radial kawai kuma faɗaɗawar zafi ta rotor ƙarami ne, don hakabearings na silindakumabearings na ƙwallon zurfin tsagigalibi ana zaɓensu.

 

Akwatin gear mai ragewa yana watsa babban adadin ƙarfi, wasu daga cikinsu suna amfani da gears na helical, kuma bearings suna buƙatar ɗaukar nauyin radial da axial, don hakabearings na silinda, bearings na ƙwallon zurfin tsagida maki ukubearings na ƙwallon lamba na kusurwagalibi ana zaɓensu.

 

Injinan Aero suna amfani da bearings na ƙwallon hulɗa mai kusurwa uku da kumabearings na silinda.

Bearings na ƙwallo mai kusurwa uku

Lokacin da injin aero ke aiki, za a samar da nauyin radial da nauyin axial akan spindle, kuma galibi ana saita saitin bearings na ball a wurin fulcrum a gaban spindle don ɗaukar nauyin radial wanda aka samar ta hanyar saman ƙarfin da ba shi da daidaito na kowane shaft da juyawa mai sauri, kuma a lokaci guda yana ɗaukar bambancin nauyin axial tsakanin ƙarfin pneumatic na fanka da compressor gaba da ƙarfin pneumatic baya na turbine.

 

Kwatanta tsarin bearings na ƙwallon rami mai zurfi da bearings na ƙwallon lamba mai maki uku, tsakiyar ramin zobe na ciki na bearings na ƙwallon lamba mai maki uku an sanye shi da Lo mai daidaituwa a axial, wanda ke sa gearings na axial Ga da adadin rotor a cikin alkiblar axial ya zama ƙasa da sauƙi don sarrafa gear axial na stover mai juyawa na injin.

 

Bearing ɗin ƙwallon hulɗa mai kusurwa uku yana da tsarin zobe mai rabi-ciki biyu, kuma ƙirar zoben rabin-cikinsa da aka raba tana ba da damar shigar da ƙarin ƙwallo, wanda hakan ke ƙara ƙarfin ɗaukar nauyi sosai.

 

Kwatanta tsarin bearings na ƙwallon hulɗa na kusurwa da bearings na ƙwallon hulɗa na kusurwa uku, bearings na ƙwallon hulɗa na kusurwa za su iya ɗaukar nauyin axial na hanya ɗaya kawai, idan suna buƙatar ɗaukar nauyin axial na kusurwa biyu, suna buƙatar a haɗa su, wanda zai ɗauki ƙarin sarari kuma ya ƙara nauyin; Zobba biyu da rabi na ciki na bearings na ƙwallon hulɗa na kusurwa uku na iya ɗaukar nauyin axial na kusurwa biyu kai tsaye, wanda zai iya adana kusan kashi 50% na sarari da inganci idan aka kwatanta da layuka biyu ko rukuni na bearings na ƙwallon hulɗa na kusurwa biyu, kuma suna da sauƙin shigarwa, wanda ya dace da ƙirar injin.

 

Za a iya raba keji da ƙwallo na bearing ɗin lamba mai maki uku daga zoben waje, don haka ana iya amfani da keji mai ƙarfi guda ɗaya, wanda ke da ƙarfi mafi girma, ya dace da saurin juyawa mai girma, kuma ya fi sauƙi a sami daidaiton injina mafi girma; A lokaci guda, tsarin kuma yana sa shigarwa da duba bearings su fi dacewa.

 

Bearings na silinda

Idan aka kwatanta da bearings na silinda na inji na yau da kullun, diamita na na'urar naɗa bearings na injin aero ya ƙanƙanta, kuma fa'idodinsa sune kamar haka:

1) Zai iya rage juriyar juyawar mai na abin nadi yayin aiki mai sauri;

2) Ƙarfin inertial ɗin ƙarami ne;

3) Ana iya kiyaye isasshen matsin lamba idan ƙarfin radial ɗin ya yi ƙanƙanta don guje wa zamewar na'urar birgima;

4) Tunda ana iya raba sassan ferrule, na'urar birgima da keji, ana iya amfani da keji mai ƙarfi, wanda ke da ƙarfi mafi kyau da kwanciyar hankali mai sauri.

 

Bearings na silindaba tare da flange a cikin zoben ciki ba yawanci suna da faɗin zoben ciki mafi girma don ɗaukar motsin axial tsakanin zoben ciki da na waje wanda tsayin da aka samu sakamakon faɗaɗa zafi tsakanin shaft da zoben ciki na bearing, da kuma rashin daidaituwa tsakanin zoben ciki da na waje wanda kuskuren haɗuwar axial na taron rotor ya haifar yayin haɗuwa. Idan sararin shigarwa ƙarami ne ko kuma akwai buƙatu na musamman, ana iya amfani da shaft ko gidan bearing kai tsaye maimakon zoben ciki mara flange.

 

Injin jirgin samabearings na silindaSau da yawa suna fuskantar yanayin aiki na ƙaramin nauyin radial ko babu nauyin radial, kuma saurin juyawa yana da yawa sosai, na'urorin juyawa suna da saurin zamewa da gogewa, don hana zamewa, ana amfani da hanyoyin tsere marasa zagaye don cimma nauyin radial na ɗaukar nauyin bearings, kuma galibi ana amfani da rarraba nauyin bearings guda biyu marasa zagaye.

 

Kayan ɗaukar kaya

Yanayin zafin aiki na injin turbine bearing yana da yawa sosai, kuma yawanci ana buƙatar sanyaya bearing ɗin da yawan man shafawa na lita da yawa a minti ɗaya, amma zafin aiki na bearing ɗin har yanzu yana iya kaiwa kimanin 250°C.

 

Domin biyan yanayin aiki mai zafi, zoben bearing yawanci yana amfani da ƙarfe 8Cr4Mo4V (M50) da sauran ƙarfe mai zafi, kuma ana yi masa magani da zafin jiki mai zafi, koda kuwa zafin bearing ya kai 400 °C bayan an dakatar da injin, har yanzu yana iya tabbatar da aikin bearing ɗin. Domin biyan bukatun gajiyar birgima, ana buƙatar taurin saman kayan bearing ya zama bai gaza 60 HRC ba a zafin ɗaki, kuma ƙarfe 8Cr4Mo4V gabaɗaya yana taurare ta hanyar maganin zafi, amma taurin ya fi ƙasa da na kayan kayan gini, wanda zai haifar da fashewar ferrule lokacin da ƙarfin centrifugal na ferrule da matsin lamba na kewaye na shaft suka yi yawa. Saboda haka, ƙimar dn ta wuce 2.5 × 106 mm · r/min bearings ya kamata a yi su da kayan G13Cr4Mo4Ni4V (M50NiL), wanda ke da ƙarfi mafi kyau.

 

Kayan keji na bearings na injin Aero gabaɗaya ana yin su ne da ƙarfe mai tsari kamar 40CrNiMoA (4030), kuma ana buƙatar a yi wa kejin fenti da azurfa don rage lalacewa a lokacin fara aiki. Abin birgima iri ɗaya ne da kayan ferule, kuma taurinsa gabaɗaya iri ɗaya ne da na ferule, kuma a wasu lokuta zai fi ferrule girma da 1 ~ 2 HRC. Wani lokaci ƙwallon kuma yana amfani da kayan yumbu kamar silicon nitride, alumina, da zirconia.