Mabeya otentha kwambiri

Kodi Kupereka Kutentha Kwambiri ndi Chiyani?

Chomwe chimatchedwa kuti chivundikiro cha kutentha kwambiri chimatanthauza kuti kutentha kogwira ntchito ndi kokwera kuposa kutentha kwa chivundikiro chachizolowezi, ndipo chivundikirocho chimagwiritsidwa ntchito pa kutentha kogwira ntchito kopitilira 150° imatchedwa bearing yotentha kwambiri.

 

Makhalidwe a ma bereki otentha kwambiri:

 

1. Mafuta odzola moyo wonse, palibe mafuta owonjezera panthawi yogwiritsa ntchito.

 

2. Yotsika mtengo, khalidwe lake ndi lokwera kambirimbiri kuposa la ma bearing wamba.

 

3. Yapangitsa makasitomala athu kukukhulupirirani ndi moyo wautali wautumiki.

 

4. Ma bearing otentha kwambiri amagwiritsidwa ntchito kwambiri mu zitsulo, ma uvuni, magalasi, ng'anjo zophulika, zida zopenta ndi makina ena omwe amagwiritsidwa ntchito kutentha kwambiri.

 

Ma bearing otentha kwambiri amagwiritsidwa ntchito makamaka mu injini za ndege, ma turbine a gasi, makina a nyukiliya, ma X-ray tube tungsten discs, magalimoto othamanga kwambiri, ma rocket, ndi zombo zamlengalenga.

 

Kuyika ma bearing otentha kwambiri

Kuphatikiza apo, ngati kupanikizika kwayikidwa mbali imodzi ya mphete (monga mphete yakunja), ndipo mbali inayo ya mphete (monga mphete yamkati) ikakanikizidwa mkati mwake kudzera mu chinthu chozungulira, izi nthawi zambiri zimayambitsa kupindika kapena kusweka pamwamba pa chozungulira, ndipo sichiyenera kugwiritsidwa ntchito, makamaka ngati chogwirira chosalekanitsidwa chayikidwa pa shaft ndi bearing housing nthawi imodzi.

 

Potenthetsa ndi kukhazikitsa chotengera, ndikofunikira kumvetsetsa kutentha kwa chotengera kutentha kwambiri pansi pa mabearing osiyanasiyana otentha kwambiri.

 

Kuyenerera kwamabearing otentha kwambiri

1. Kusokoneza

 

Mphete yamkati ndi yakunja ya chinthu chogudubuza imakhazikika pa shaft kapena bokosi lonyamula katundu, ndipo ikakwezedwa, mphete ndi shaft kapena bokosi lonyamula katundu silikhala ndi kayendedwe ka radial, axial ndi rotational relative, ndipo kuyenda kumeneku kumayambitsa kukangana, dzimbiri kapena ming'alu ya kukangana pamwamba pa mating, kotero kuti kuwononga bearing, shaft ndi bokosi lonyamula katundu, kenako ufa wothira mafuta umasakanizidwa mu bearing, zomwe zimakhala chifukwa cha ntchito yoyipa, kutentha kosazolowereka kapena kugwedezeka.

 

Ponena za njira yokhazikika yoperekera katundu, ndi bwino kusiya kuchuluka kwa kusokoneza pamwamba pa mphete ndi shaft kapena bearing housing, ndipo malo okhazikika ndi abwino kwambiri, kuti katundu wa mphete yopyapyala igawidwe mofanana kuzungulira popanda kukhudza mphamvu ya katundu wa bearing.

 

Komabe, kuwonjezera pa zovuta zomangirira ndi kutsitsa bearing, singagwiritsidwe ntchito nthawi zonse pamene bearing yalekanitsidwa ndipo singathe kusunthidwa mozungulira pamene bearing yalekanitsidwa pamene bearing ikugwiritsidwa ntchito.

 

2. Kusankha koyenera

 

Kusankha koyenera nthawi zambiri kumachitika motsatira mfundo izi:

 

(1) Malinga ndi malangizo ndi mtundu wa katundu wogwirira ntchito pa bearing ndi mbali iti ya mphete zamkati ndi zakunja zomwe zimazungulira, katundu wonyamulidwa ndi mphete iliyonse ukhoza kugawidwa m'magulu ozungulira, katundu wosasinthasintha, kapena katundu wosasinthasintha, mphete yomwe imanyamula katundu wozungulira ndi katundu wosasinthasintha iyenera kutenga malo okhazikika (kulowerera), mphete yomwe imanyamula katundu wosasinthasintha ikhoza kutenga malo osinthira kapena malo osinthasintha (kuyenerera kovomerezeka), pamene katundu wonyamulira ndi waukulu kapena wokhala ndi kugwedezeka ndi katundu wogwedezeka, kusokoneza kuyenera kuwonjezeka, pamene shaft yopanda kanthu, bokosi lonyamula lopindika kapena bokosi lopepuka ndi pulasitiki zimagwiritsidwa ntchito, Ndikofunikiranso kuwonjezera kuchuluka kwa kusokoneza.

 

(2) Ngati pakufunika kusunga kulondola kwa kuzungulira kwakukulu, ma bearing olondola kwambiri ayenera kugwiritsidwa ntchito, ndipo kulondola kwa miyeso ya ma shaft ndi mabokosi otengera kuyenera kukonzedwa, kuti tipewe kusokoneza kwambiri, ngati kusokoneza kuli kwakukulu kwambiri, kulondola kwa geometry ya bearing kapena bokosi la axle kungakhudze mawonekedwe a mphete yotengera bere, motero kuwononga kulondola kwa kuzungulira kwa bearing, ngati mphete zamkati ndi zakunja za ma bearing osalekanitsa (monga ma bearing a mpira wozama) zili bwino, ndiye kuti kukhazikitsa ndi kusokoneza bearing kumakhala kovuta kwambiri, ndipo ndibwino kugwiritsa ntchito kuyenerera kwamphamvu mbali imodzi ya mphete yakunja.

 

3. Kugwirizana n'kofunikira

 

Ponena za kukula kwa shaft ndi kukula kwa bore tolerances za shaft ndi bearing housing komwe ma bearing amayikidwa, ISO283 (dimensional tolerances and fits) yagwiritsidwa ntchito mu metric series, kotero kuti fit tolerances zatsimikiziridwa malinga ndi kukula kwa shaft ndi kukula kwa bore tolerances zomwe zasankhidwa.