Li-bearings, e le karolo ea bohlokoa le ea bohlokoa ea lihlahisoa tsa mechine, li bapala karolo ea bohlokoa ho tšehetsa shaft e potolohang.Ho ea ka mefuta e fapaneng ea likhohlano ka har'a bering, bearing e arotsoe ka rolling friction bearing (e hlalosoang e le rolling bear) le "sliding bearing" (e bitsoang "sliding bearing).Mefuta e 'meli ea li-bearings e na le litšoaneleho tsa eona ka sebopeho le melemo le mefokolo ts'ebetsong.

1. Papiso ea li-bearings le li-sliding bearings

1. Papiso ea sebopeho le mokhoa oa ho sisinyeha

Phapang e totobetseng ka ho fetisisa pakeng tsa li-bearings le li-bearings tse hlakileng ke ho ba teng kapa ho ba sieo ha likarolo tse pota-potileng.

(1) Li-bearings li na le likarolo tse pota-potileng (libolo, li-cylindrical rollers, li-roller tapered, li-need rollers), tse pota-potileng ho tšehetsa mokokotlo o potolohang, kahoo karolo ea ho kopana ke ntlha, likarolo tse ngata tse pota-potileng, lintlha tse ngata tsa ho ikopanya.

(2) The sliding bearing ha e na likarolo tse pota-potileng, 'me sefate se potolohang se tšehetsoa ke sebaka se boreleli, kahoo karolo ea ho kopana ke bokaholimo. Phapang ea sebopeho pakeng tsa tse peli e etsa qeto ea hore motsamao o thellang o ntse o thella, 'me mokhoa oa ho sisinyeha oa ho thella o ntse o thella, kahoo boemo ba likhohlano bo fapane ka ho felletseng.

2. Papiso ea bokhoni ba ho jara

Ka kakaretso, ka lebaka la sebaka se seholo sa khatello ea li-bearings tse thellang, matla a ho beleha a li-bearings tse thellang hangata a phahame ho feta a li-bearings tse bilikang, 'me bokhoni ba li-bearings ho mamella meroalo ha bo phahame, empa li-bearings tse nang le lubricated ka botlalo. e khona ho mamella meroalo e mengata e meholo.Ha lebelo la ho potoloha le phahame, matla a centrifugal a likarolo tse pota-potileng a eketseha, 'me matla a eona a ho jara a lokela ho fokotseha (lerata le atisa ho etsahala ka lebelo le phahameng).Bakeng sa li-sliding bearings tsa hydrodynamic, matla a ho jara mojaro a eketseha ha lebelo la ho potoloha le ntse le eketseha.

3. Papiso ea coefficient ea likhohlano le ho qala khanyetso ea likhohlano

Tlas'a maemo a tloaelehileng a ho sebetsa, coefficient ea friction ea li-rolling bearings e tlase ho feta ea li-bearings tse thellang, 'me boleng bo batla bo tsitsitse.Ho tlotsa ha li-bearings tse thellang ho angoa habonolo ke lintlha tse kantle tse kang lebelo la ho potoloha le ho sisinyeha, 'me coefficient ea likhohlano e fapana haholo.

Ha ho qala, kaha ho thella ha ho e-s'o thehe filimi ea oli e tsitsitseng, khanyetso e kholo ho feta ea ho roala, empa khanyetso e qalang ea friction le coefficient e sebetsang ea hydrostatic sliding bearing e nyenyane haholo.

4. Papiso e sebetsang ea lebelo la ho sebetsa

Ka lebaka la khaello ea matla a centrifugal a likarolo tse pota-potileng le ho phahama ha mocheso oa bering, ho roala ho ke ke ha potoloha holimo haholo, 'me ka kakaretso ho loketse maemo a sebetsang a mahareng le a tlaase.Ka lebaka la ho futhumala le ho roala ha bere, lebelo la ho sebetsa la mokelikeli o sa fellang o nang le lubricated bering ha ea lokela ho ba holimo haholo.Ts'ebetso e phahameng ea lebelo la ho beleha ka metsi-lubricated ka ho feletseng e ntle haholo, haholo-holo ha hydrostatic sliding bearing e sebelisa moea e le lubricant, lebelo la eona le ka fihla ho 100000r / min.

5. Papiso ea tahlehelo ea matla

Ka lebaka la khohlano e nyane ea li-bearings, tahlehelo ea matla ka kakaretso ha e kholo, e nyane ho feta ea li-bearings tse sa phetheheng tsa mokelikeli, empa e tla eketseha haholo ha ho tlotsa le ho kenya ho sa nepahala.Tahlehelo ea matla a khohlano ea libering tse tlotsitseng metsi ka ho felletseng e tlase, empa bakeng sa libering tse thellang tsa hydrostatic, tahlehelo ea matla kaofela e ka ba holimo ho feta ea hydrodynamic sliding bearings ka lebaka la tahlehelo ea matla ea pompo ea oli.

6. Papiso ea bophelo ba tšebeletso

Ka lebaka la tšusumetso ea li-pitting le mokhathala, li-rolling bearings hangata li etselitsoe lilemo tse 5 ho isa ho tse 10, kapa li nkeloa sebaka nakong ea ntlafatso.Li-bearing pads tsa li-bearings tse sa phethoang tsa lubricated li tsofetse haholo 'me li hloka ho nkeloa sebaka khafetsa.Bophelo ba "bearing lubricated" ka botlalo ha bo na moeli, empa ts'ebetsong, ka lebaka la potoloho ea khatello ea maikutlo, haholo-holo bakeng sa li-sliding bearings tsa hydrodynamic, thepa ea pad e ka ba le mokhathala.

7. Papiso ea ho nepahala ha potoloho

Ka lebaka la tumello e nyane ea radial ea li-rolling bearings, ho nepahala ha potoloho hangata ho phahame.Li-bearings tse sa phetheheng tse nang le lubricated li maemong a ho tlotsa moeli kapa ho tlotsa ho tsoakaneng, 'me ts'ebetso ha e tsitsa, ho roala ho tebile,' me ho nepahala ho tlase.Li-bearings tse nang le lubricated ka ho feletseng li na le ho nepahala ho phahameng ka lebaka la ho ba teng ha filimi ea oli, buffering le vibration absorption.Thepa ea hydrostatic sliding e na le ho nepahala ho holimo ho potoloha.

8. Papiso likarolong tse ling

Li-rolling bearings li sebelisa oli, mafura kapa mafura a tiileng. Tekanyetso e nyane haholo, mme tekanyetso e kholo ka lebelo le holimo. Bohloeki ba oli bo hlokeha hore bo be bo phahameng, kahoo ho hlokahala hore bo tiisetsoe, empa ho beleha ho bonolo ho nkela sebaka 'me ka kakaretso ha ho hlokahale ho lokisa koranta.

Bakeng sa li-bearings tse thellang, ntle le li-bearings tse sa tlotsoang ka botlalo, lubricant hangata ke mokelikeli kapa khase, 'me chelete e ngata, le bohloeki ba oli le bona boa hlokahala. Sehlahla se behang se hloka ho nkeloa sebaka khafetsa, 'me ka linako tse ling koranta e lokisoa.

2. Khetho ea li-bearings le li-sliding bearings

Ka lebaka la maemo a sebele a rarahaneng le a fapaneng, ha ho na maemo a kopaneng a khetho ea li-bearings le li-sliding bearings.Ka lebaka la coefficient e nyane ea likhohlano, khanyetso e tlase ea ho qala, kutlo, ts'ebetso e phahameng, le maemo a tloaelehileng, li-bearings li na le phetoho e ntle haholo le ho feto-fetoha ha maemo, 'me li bonolo haholo ho li sebelisa, ho tlotsa le ho li boloka. e sebedisoang haholo.

Li-bearings ka botsona li na le melemo e itseng, 'me hangata li sebelisoa maemong a mang moo ho ke keng ha khoneha, ho sa khonehe kapa ho se na melemo ea ho sebelisa li-bearings, joalo ka liketsahalo tse latelang:

1. Boholo ba sebaka sa radial bo fokotsehile, kapa ketsahalo e tlameha ho aroloa le ho kenngoa

Ka lebaka la lesale la ka hare, lesale la ka ntle, 'mele o pota-potileng le cage ka sebopeho sa ho roala, boholo ba radial bo boholo,' me kopo e lekanyelitsoe.Ha litlhoko tsa boholo ba radial li le thata, li-bearings tsa nale li ka khethoa. Ha ho hlokahala, li-sliding bearings li hloka ho khethoa.Bakeng sa li-bearings tse sa thabiseng, kapa tse ke keng tsa kenngoa ho tloha ka tataiso ea axial, le likarolo tse lokelang ho kenngoa ka thoko, ho sebelisoa li-bearings tse arohaneng.

2. Liketsahalo tse nepahetseng haholo

Ha li-bearings tse sebelisoang li na le litlhoko tse phahameng tse nepahetseng, hangata li-bearings tse thellang lia khethoa, hobane filimi ea oli e tlotsang ea li-bearings tse thellang e ka thiba le ho monya ho thothomela. Ha litlhoko tse nepahetseng li phahame haholo, ho ka khethoa feela li-bearings tsa hydrostatic sliding.Bakeng sa mechini ea ho sila e nepahetseng le e phahameng haholo, lisebelisoa tse fapaneng tse nepahetseng, joalo-joalo, li-sliding bearings li sebelisoa haholo.

3. Liketsahalo tsa mojaro o boima

Li-rolling bearings, ho sa tsotellehe hore na ke li-ball bearings kapa li-roller bearings, li atisa ho futhumala le ho khathala ha li sebelisoa ka boima bo boima.Ka hona, ha mojaro o le moholo, hangata ho sebelisoa li-sliding mill, tse kang li-rolling mill, li-turbine tsa mouoane, lisebelisoa tsa enjene ea aero-enjene le mechini ea merafo.

4. Liketsahalo tse ling

Mohlala, lebelo la ho sebetsa le phahame haholo, ho ts'oha le ho thothomela ho hoholo haholo, 'me ho sebetsa ka metsing kapa sebakeng se senyang hoa hlokahala, le sebaka sa ho thella le sona se ka khethoa ka nepo.

Bakeng sa mofuta oa mochini le lisebelisoa, ts'ebeliso ea li-bearings le li-sliding bearings li na le melemo le mathata, 'me li lokela ho khethoa ka mokhoa o utloahalang ho latela boenjiniere ba 'nete.Nakong e fetileng, li-crushers tse kholo le tse mahareng li ne li atisa ho sebelisa li-sliding bearings tse nang le li-alloys tsa babbitt, hobane li khona ho mamella meroalo e mengata, 'me li batla li sa senyehe ebile li tsitsitse.Li-crushers tse nyane tsa mohlahare li sebelisa li-rolling bearings, tse nang le ts'ebetso e phahameng ea phetisetso, li bonolo haholoanyane, 'me ho bonolo ho li hlokomela.Ka ntlafatso ea theknoloji ea tlhahiso ea li-rolling, li-crushers tse ngata tse kholo tsa mohlahare le tsona li sebelisa li-rolling bearings.

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Nako ea poso: Jul-08-2022