Hobaneng ha mechini e mengata ea merafo e khetha li-rolling bearings ho fapana le li-sliding bearings?

E le karolo ea bohlokoa le ea bohlokoa lihlahisoa tsa mochini, li-bearings li bapala karolo ea bohlokoa ho ts'ehetsa li-shafts tse 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 litšobotsi tsa eona ka sebopeho,' me e 'ngoe le e' ngoe e na le melemo le melemo ea eona mosebetsing.

Papiso ea li-rolling le plain bearings

1. Papiso ea sebopeho le mokhoa oa ho sisinyeha

Phapang e totobetseng ka ho fetisisa pakeng tsa li-bearings lelibering tse hlakilengke boteng kapa bosio ba dintho tse bidikang.

Li-bearings li na le likarolo tse pota-potileng (libolo, li-cylindrical rollers, li-rollers tse tapered, li-need rollers) tse itšetlehileng ka ho potoloha ha tsona ho tšehetsa molamu o potolohang, kahoo karolo ea ho ikopanya ke ntlha, 'me likarolo tse ngata tse pota-potileng, li na le lintlha tse ngata tsa ho ikopanya.

Li-bearings tse hlakilengha li na likarolo tse pota-potileng 'me u itšetlehe ka libaka tse boreleli ho tšehetsa molamu o potolohang, kahoo karolo ea ho kopana ke bokaholimo.

 

Phapang ea sebopeho sa tse peli e etsa qeto ea hore mokhoa oa ho sisinyeha oa ho roala o ntse o phalla, 'me mokhoa oa ho sisinyeha oa ho thella o ntse o thella, kahoo boemo ba likhohlano bo fapane ka ho feletseng.

 

2. Papiso ea bokhoni ba ho jara

Ka kakaretso, ka lebaka la sebaka se seholo sa bering e thellang, matla a eona a ho beleha hangata a phahame ho feta a rolling bearing, 'me bokhoni ba "rolling bear" ba ho jara mojaro oa ts'ebetso ha bo phahame, empa bere e lubricated ka ho feletseng e ka mamella. mojaro o moholo oa tšusumetso ka lebaka la karolo ea ho monya le ho sisinyeha ka lebaka la filimi ea oli e tlotsang. 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 fokotseha (lerata le atisa ho etsahala ka lebelo le phahameng). Tabeng ea li-dynamic plain bearings, matla a tsona a ho jara mojaro a eketseha ka lebelo le phahameng.

 

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 tlaase ho feta ea li-bearings tse hlakileng, 'me boleng bo tsitsitse haholoanyane. Ho tlotsoa ha li-bearings tse thellang ho angoa habonolo ke lintlha tse kantle tse kang lebelo le ho sisinyeha, 'me coefficient ea likhohlano e fapana haholo.

 

Ha ho qala, khanyetso e kholo ho feta ea ho roala ka lebaka la hore thepa e thellang ha e e-s'o thehe filimi e tsitsitseng ea oli, empa ho hanyetsa ho ferekanngoa ho qalang le coefficient e sebetsang ea ho ferekanngoa ha hydrostatic sliding bearing e nyenyane haholo.

 

4. Papiso ea lebelo le sebetsang la ho sebetsa

Ka lebaka la khaello ea matla a centrifugal ea ntho e bilikang le ho phahama ha mocheso oa bering, lebelo la ho roala ha le khone ho ba holimo haholo, 'me ka kakaretso le loketse maemo a sebetsang a mahareng le a tlaase. Li-bearings tse sa phetheheng tse nang le lubricated ka lebaka la ho futhumatsa le ho roala ha bere, lebelo la ho sebetsa ha lea lokela ho ba holimo haholo. Ts'ebetso e phahameng ea lebelo la li-bearings tse nang le lubricated ka ho feletseng li ntle haholo, haholo-holo ha li-bearings tsa hydrostatic plain li tlotsoa ka moea, 'me lebelo la tsona la ho potoloha le ka fihla ho 100,000 r / min.

 

5. Papiso ea tahlehelo ea matla

Ka lebaka la khohlano e nyane ea li-bearings, tahlehelo ea matla ea bona hangata ha e kholo, e ka tlase ho ea li-bearings tse sa phetheheng tsa mokelikeli, empa e tla eketseha haholo ha e tlotsoa le ho kengoa hantle. Tahlehelo ea matla a khohlano ea li-bearings tse tlositsoeng ka mokelikeli ka botlalo e tlase, empa bakeng sa li-bearings tsa hydrostatic plain, tahlehelo ea matla kaofela e ka ba holimo ho feta ea li-bearings tsa hydrostatic plain ka lebaka la tahlehelo ea matla a pompo ea oli.

 

6. Papiso ea bophelo ba tšebeletso

Ka lebaka la tšusumetso ea likoti le mokhathala, li-rolling bearings hangata li etselitsoe lilemo tse 5-10, kapa li nkeloa sebaka nakong ea ntlafatso. Li-pads tsa li-bearings tse sa fellang tse nang le lubricated mokelikeli li tsofetse haholo 'me li hloka ho nkeloa sebaka khafetsa. Bophelo ba li-bearings tse nang le lubricated ka botlalo ha li na moeli, empa ka ts'ebetso, ho khathala ho hloleha ha thepa ho ka etsahala ka lebaka la khatello ea maikutlo, haholo-holo bakeng sa libere tse hlakileng.

 

7. Papiso ea ho nepahala ha potoloho

Li-bearings tse bilikang hangata li na le ho nepahala ho phahameng ho potoloha ka lebaka la ho hlaka ha mahlaseli a manyane. Mokelikeli o sa phethoang o nang le lubricated bering o boemong ba ho lubrication moeling kapa motsoako o tsoakiloeng, 'me ts'ebetso ha e tsitsa,' me ho apara ho tebile, 'me ho nepahala ho tlaase. Ka lebaka la ho ba teng ha filimi ea oli, li-cushions tse nang le metsi-lubricated ka ho feletseng 'me li monya vibrate ka ho nepahala ho phahameng. Li-bearings tsa hydrostatic plain li na le ho nepahala ho holimo ho potoloha.

 

8. Papiso ea likarolo tse ling

Li-rolling bearings li sebelisa oli, grease kapa lubricant e tiileng, palo e nyane haholo, palo e kholo ka lebelo le phahameng, bohloeki ba oli bo hlokeha hore bo be bo phahameng, kahoo ho hlokahala hore bo tiisetsoe, empa ho bea ho bonolo ho nkela sebaka. , 'me ka kakaretso ha ho hlokahale ho lokisa koranta. Bakeng sa li-bearings tse hlakileng, ntle le li-bearings tse sa fellang tsa lubrication ea metsi, lubricant hangata ke mokelikeli kapa khase, palo e kholo haholo, litlhoko tsa bohloeki ba oli le tsona li phahame haholo, lipampiri tse belehang li hloka ho nkeloa sebaka khafetsa, 'me ka linako tse ling koranta e lokisoa. .

 

Khetho ea li-bearings le li-bearings tse hlakileng

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 nyane ea ho qala, kutlo, ts'ebetso e phahameng, le maemo, li-bearings li na le phetoho e ntle haholo le ho feto-fetoha ha maemo, 'me li bonolo ho li sebelisa, ho tlotsa le ho li boloka,' me hangata li etelletsoa pele khethong, kahoo li sebelisoa haholo. ka mechine e akaretsang. Li-bearings tse sa hlakang ka botsona li na le melemo e ikhethang, e sebelisoang hangata maemong a mang moo li-bearings li ke keng tsa sebelisoa, li le tšitiso kapa ntle le melemo, joalo ka liketsahalo tse latelang:

 

1. Boholo ba sebaka sa radial bo lekanyelitsoe, kapa ho kenngoa ho tlameha ho aroloa

Ka lebaka la selikalikoe sa ka hare, lesale la ka ntle, karolo ea rolling le cage mohahong, boholo ba radial ba ho roala bo boholo, 'me kopo e lekanyelitsoe ho isa tekanyong e itseng. Li-bearings tsa nale li fumaneha ha litekanyo tsa radial li le thata, 'me haeba ho hlokahala, li-bearings tse hlakileng lia hlokahala. Bakeng sa likarolo tse sa thabiseng ho ba le li-bearings, kapa tse ke keng tsa phahamisoa ho tloha ka lehlakoreng la axial, kapa moo likarolo li tlamehang ho aroloa ka likarolo, ho sebelisoa li-bearings tse arohaneng.

 

2. Liketsahalo tse nepahetseng haholo

Ha bering e sebelisitsoeng e na le litlhokahalo tse phahameng tse nepahetseng, hangata ho khethoa sebaka sa ho thellela, hobane filimi ea oli e tlotsang ea bering e thellang e ka thibela ho monya ho sisinyeha, 'me ha ho nepahala ho le holimo haholo, ho ka khethoa feela fani ea 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, ebang ke li-ball bearings kapa li-roller bearings, li atisa ho futhumala le ho khathala maemong a boima. Ka hona, ha mojaro o le moholo, hangata ho sebelisoa li-bearings tse thellang, joalo ka limilora, li-turbine tsa mouoane, lisebelisoa tsa enjine ea aero le mechini ea merafo.

 

4. Liketsahalo tse ling

Mohlala, lebelo la ho sebetsa le phahame haholo, ho ts'oha le ho thothomela ho hoholo ka mokhoa o sa tloaelehang, 'me tlhoko ea ho sebetsa metsing kapa mecheng ea lintho tse senyang, joalo-joalo, li-sliding bearings le tsona li ka khethoa ka mokhoa o utloahalang.

 

Bakeng sa mofuta oa mochini le lisebelisoa, ts'ebeliso ea li-bearings le li-sliding bearings, e 'ngoe le e' ngoe e na le melemo le melemo ea eona, 'me e lokela ho khethoa ka mokhoa o utloahalang hammoho le morero oa sebele. Nakong e fetileng, li-crushers tse kholo le tse mahareng li ne li atisa ho sebelisa li-sliding bearings tse nang le babbitt, hobane li ne li khona ho mamella boima bo boholo, 'me li ne li sa khathatse ebile li tsitsitse. Mohlahare o monyane oa mohlahare o sebelisoa haholo ka li-rolling bearings, tse nang le ts'ebetso e phahameng ea phetisetso, e bobebe ebile e bonolo ho e hlokomela. Ka ntlafatso ea boemo ba tekheniki ea tlhahiso ea li-rolling bearing, boholo ba li-breaker tse kholo tsa mohlahare li boetse li sebelisoa ho li-rolling bearings.