Raws li cov qauv ntawm zawv zawg bearings, cov kev ua haujlwm thiab cov khoom siv tuaj yeem raug sau tseg raws li hauv qab no. Kev tshuaj xyuas qhov system tau ua tiav raws li lawv cov qauv kev ua haujlwm thiab kev ua haujlwm engineering:
1. Cov Txheej Txheem Ua Haujlwm tseem ceeb
Siab - ceev tshaj
Lub hauv paus ntsiab lus txhawb nqa: axial caj dab bearing los ntawm kev sib hloov ntawm lub caj dab caj dab los ua ib tug cuneiform roj zaj duab xis, siv cov nyhuv hydrodynamic siab kom ua tiav lubrication. Qhov nruj ntawm cov roj zaj duab xis yog ncaj qha ntsig txog cov kabmob muaj peev xwm ntawm cov roj zaj duab xis.
Cov cuab yeej siv: Rotor txhawb nqa tshuab rau cov tshuab teb, xws li chav turbines, generators, thiab compressors loj.
Kub kub heev thiab corrosive ib puag ncig
Cov khoom zoo: cov ntaub ntawv xov xwm bearings yog ua los ntawm siab - cov ntaub ntawv kub resistant, xws li txhuas-raws li los yog tin raws li Babbit alloys, thiab tuaj yeem tiv taus qhov kub siab tshaj 150 degree. Tsis yog -cov kabmob hlau (xws li PTFE thiab graphite) yog tsim rau corrosive media ib puag ncig.
Daim ntawv thov: Internal combustion engine Crankshaft bearings, tshuaj txheej txheem twj tso kua mis bearing.
High precision thiab stability yuav tsum tau
Cov yam ntxwv Dynamic: Tilt pad zawv zawg kabmob tau hloov kho los ntawm lub ncoo, tshem tawm ntug siab thiab ua tiav kev ruaj ntseg siab. Piv txwv li, ib lub tshuab CNC tshuab spindle txais yuav tshem tau ntau- roj wedge bearings, radial clearance tuaj yeem hloov kho mus rau 5-15μm, kev sib hloov qhov tseeb mus txog qib micrometer.
Kev them nyiaj yug cov ntaub ntawv: COMSOL simulation qhia tau hais tias lub plhaub plhaub piv (xav txog rotor stability) ntawm inclined bearing yog ntau tshaj 30% qis dua cov kabmob ruaj khov.
Tsawg-Speed Heavy Load thiab impact load scenarios
Kev siv roj av ciam teb: cov ntawv xov xwm cov kabmob ua haujlwm los ntawm ciam teb lubrication ntawm qhov nrawm qis dua 1.5 m / s (kev sib txhuam coefficient 0.05-0.1). Piv txwv li, pins thiab bushing rau kev tsim kho tshuab thiab pob khawm rau cov khoom siv mining.
Kev ntsuas kev ntsuas: siv lub siab siab EP) roj lossis ntxiv molybdenum disulfide cov roj nplua nyeem tuaj yeem txhim kho cov kabmob muaj peev xwm 2-3 zaug.
2. Cov cuab yeej siv raws li kev thov
Zog thiab hluav taws xob
Chav turbine/generator: cylindrical, elliptical lossis multi-cov ntaub ntawv xov xwm cov kabmob siv los txhawb cov radial load ntawm lub rotor, thaum thrust-axle-caj dab ua ke bearings raug rau axial thrust (piv txwv li, ib hom ntawm chav turbine 50 axial sib xyaw ua ke ntawm N).
Cua turbine generator teeb: ncej bearing adopts ob kab conical roller bearings thiab phau ntawv xov xwm bearings ua ke, haum rau pitch variation thiab yaw suab.
Industrial machinery sector
Tshuab cuab tam spindle: siab precision grinder spindle txais ruaj ntau- roj wedge bearings. Tsawg- roj siab (siab 0.5-2 mpa) yog muab los ntawm lub twj tso kua mis hydraulic, tsim cov roj zaj duab xis uas tsis txhob muaj kev sib txhuam qhuav ntawm thiab tawm. Mobile multi-roj wedge bearing yog haum rau kev kub ceev thiab lub teeb loads (rotational ceev tshaj 400r / min).
Gearbox: Cov khoom siv nkag ntawm qhov hnyav- lub luag haujlwm gearbox muaj cov ntaub ntawv teev cov kabmob thiab tau ua ke nrog lub zog quab yuam cov roj (kwj tus nqi 50-100L / min) kom ntseeg tau tias cov roj ua kom tsis tu ncua.
Hauv cheeb tsam ntawm kev thauj mus los
Nkoj propulsion system: lub nkoj loj stern tube txais cov ntawv xov xwm dawb ntawm cov kabmob, dej hiav txwv ua lub nruab nrab lubricating. JFO cavitation txoj kev xav yog siv los hloov kho qhov tawg tsam ntawm cov roj zaj duab xis kom hloov mus rau qhov sib txawv load.
Rail Transit: lub bearing ntawm high- ceev railway traction motors txais radial roller composite qauv, uas coj mus rau hauv tus account qhov yuav tsum tau ntawm siab - ceev thiab cuam tshuam load.
Cov cuab yeej siv rau kev ua haujlwm tshwj xeeb
Nuclear fais fab lub ntsiab twj tso kua mis: Static pressure journal bearings, los ntawm cov khoom siv roj sab nraud los tsim cov roj yeeb yaj kiab siab (siab 10-15 mpa), kom ua tiav xoom hnav thiab tsim kua muag, nuclear kev nyab xeeb seismic yuav tsum.
Aerospace: lub tshuab aero siab -siab turbo ncej txais cov kabmob chaff nrog cov qauv kev txhawb nqa rau qhov kub thiab txias thiab siab - ceev ib puag ncig (ceev> 20,000 r / min, kub> 500℃).
3. Kev xaiv thiab tsim cov ntsiab lus tseem ceeb
Kev xaiv cov txheej txheem lubrication
Kev kub siab -kev khiav hauj lwm ceev (ntev tshaj tawm> 10m / s): Kev nyiam yog muab rau kev siv roj rings lossis cov twj tso kua roj twj tso kua mis rau cov roj kom tsis txhob kub dhau vim roj lubrication.
Tsawg ceev thiab hnyav load kev khiav hauj lwm tej yam kev mob: siv lub siab roj los yog semi-lubricated journal bearings (xws li sintered bronze tes tsho) rau nws tus kheej- lubrication los ntawm roj cia nyob rau hauv pores.
Geometric parameter optimization
Aspect ratio (L/D): feem ntau 0.5 -1.5. Nyob rau hauv high speeds thiab lub teeb loads, nws yuav tsum tau nce mus rau ntau tshaj 2 los txhim kho stability.
Roj zaj duab xis thickness: Tsim qhov tseem ceeb feem ntau yog 0.01-0.1mm thiab yuav tsum loj dua qhov loj ntawm cov lim pore loj (xws li . 5 microns) los tiv thaiv cov khoom khawb.
Cov khoom sib txuam
Cov ntaub ntawv Magazine: Lub zog muaj zog alloy hlau (xws li . 42}CrMo), nto quenched rau HRC55-60 rau hnav tsis kam.
Cov ntaub ntawv hauv ob sab phlu: Tin-raws li Babbitt alloy (ZCSnSb11-}6) yog tsim rau kev kub ceev thiab lub teeb loading daim ntaub ntawv, thaum lead-based Babbitt alloy (ZCPbSb16-2) yog haum rau nruab nrab ceev thiab hnyav loading daim ntaub ntawv.