Ndiye pali mitundu yanji yama bere?

Ma bearings ndi amodzi mwa zigawo zamakina zomwe zimagwiritsidwa ntchito kwambiri, zokhala ndi kuzungulira ndi kubwerezabwereza kwa shaft, kuwongolera kuyenda kwa shaft ndikuchithandizira.Ngati mayendedwe agwiritsidwa ntchito, kukangana ndi kuvala kumatha kuchepetsedwa.Kumbali ina, ngati khalidwe la kunyamula lili lochepa, limayambitsa makina osokonekera, kotero kunyamula kumawonedwa ngati chimodzi mwazinthu zofunika kwambiri zamakina.
Ndiye pali mitundu yanji yama bere?
Pali mitundu iwiri ikuluikulu ya ma fani: ma sliding bearings ndi rolling bearings.
Kutsetsereka:
Malo otsetsereka nthawi zambiri amakhala ndi mpando wokhala ndi chitsamba chonyamula.M'ma bere otsetsereka, shaft ndi pamwamba pake zimalumikizana mwachindunji.Ikhoza kukana kuthamanga kwambiri ndi katundu wodabwitsa.Zovala zowoneka bwino zimagwiritsidwa ntchito mu injini zamagalimoto, zombo, ndi makina.
Ndi filimu yamafuta yomwe imathandizira kuzungulira.Filimu yamafuta ndi filimu yamafuta yofalikira pang'ono.Pamene kutentha kwa mafuta kumakwera kapena katunduyo ndi wolemera kwambiri, filimu yamafuta imakhala yochepa kwambiri, zomwe zimapangitsa kuti zitsulo zigwirizane ndi kuyaka.
Ntchito zina ndi izi:
1. Katundu wololedwa ndi waukulu, kugwedezeka ndi phokoso ndizochepa, ndipo zimatha kuthamanga mwakachetechete.
2. Kupyolera mu kukhazikitsidwa kwa chikhalidwe cha mafuta ndi kukonza, moyo wautumiki ungagwiritsidwe ntchito mokhazikika.
Kupiringa
Mapiritsi odzigudubuza amakhala ndi mipira kapena zodzigudubuza (zozungulira) kuti muchepetse kukana.Mapiritsi ogubuduza akuphatikizapo: mayendedwe a mpira wakuya, mayendedwe a mpira ozungulira, mayendedwe odzigudubuza, mapiritsi, etc.
Ntchito zina ndi izi:
1. Kukangana koyambira kochepa.
2. Poyerekeza ndi mayendedwe otsetsereka, pali mikangano yochepa.
3. Popeza kukula ndi kulondola ndizokhazikika, ndizosavuta kugula.
Kuyerekeza kwa magwiridwe antchito amitundu iwiri:
Kuyerekeza kwa magwiridwe antchito:
Chidziwitso chowonjezera: chidziwitso choyambirira chamafuta amadzimadzi
Kupaka kwamadzimadzi kumatanthawuza momwe mafutawa amakhalira pamene awiriwa amasiyanitsidwa ndi filimu yamadzimadzi.Pa shaft yotsetsereka, kupanikizika kopangidwa ndi madzimadzi mu chonyamulira ndi mpata wa shaft umathandizira katundu pachonyamulira.Izi zimatchedwa fluid film pressure.Kupaka mafuta kumachepetsa kuvala ndi kukangana kudzera mukuyenda kosalala.Akagwiritsidwa ntchito kwa nthawi yayitali, mafuta opaka mafuta amafunikira.
Kuphatikiza apo, zonyamula ndi chimodzi mwazinthu zomwe zimagwiritsidwa ntchito kwambiri (zigawo zokhazikika) pamapangidwe amakina.Kugwiritsa ntchito bwino ma bearings kumathandizira kukonza magwiridwe antchito ndikuchepetsa mtengo.Chifukwa chake, ndikofunikira kwambiri kudziwa bwino za ma bearings.