Me yasa wasu injina ke amfani da garkuwar ƙarshe mai rufi?

Ɗaya daga cikin dalilan da ke haifar da wutar shaft shine a cikin ƙera injin, saboda rashin daidaiton magnetoresstance na stator da rotor a gefen axial na kewayen tsakiyar ƙarfe, ana samar da kwararar maganadisu kuma shaft mai juyawa yana haɗuwa, don haka yana haifar da ƙarfin lantarki. Saboda ƙarfin shaft ko ƙarfin shaft ba shi da sauƙin aunawa, lokacin da haɗarin ƙonewa mai birgima ya faru, lalacewar wutar shaft yana bayyana.

Akwai dalilai guda biyu da ke haifar da wutar lantarki ta shaft: na farko, rashin daidaiton maganadisu na da'irar maganadisu, akwai jujjuyawar maganadisu mai juyawa wanda ke haɗuwa da shaft mai juyawa, kuma lokacin da na'urar juyawa ta gaza zuwa ƙasa, akwai wutar lantarki ta ƙasa; Na biyu, akwai ragowar kwararar maganadisu a kan shaft mai juyawa, wanda ke aiki a matsayin janareta mai unipolar.

Ga babban injin, musamman injin mita mai canzawa, yuwuwar wutar shaft ta fi girma, kuma matsalar tsatsa ta lantarki ta bearing ita ma ta fi yawa. Domin magance wannan matsalar, an samar da bearings masu rufi da murfin ƙarshe masu rufi.

Sharuɗɗan samuwar wutar lantarki ta axial sune: ɗaya shine akwai ƙarfin lantarki na axial, ɗayan kuma shine samar da madauki. A cikin injin da ke da tsari na yau da kullun da yanayin aiki, akwai ƙaramin bambanci a cikin ƙarfin lantarki tsakanin ƙarshen shaft guda biyu, kuma saboda maganin fim ɗin mai ko rufin bearing, bai isa ya haifar da lahani ba.

Idan akwai matsala a wani takamaiman hanyar haɗi, ƙarfin shaft ya wuce ƙimar iyaka, yana iya lalata rufin asali, kuma ya samar da madauki a cikin shaft mai juyawa, zoben ciki mai ɗaukar nauyi, zoben waje mai ɗaukar nauyi, ɗakin ɗaukar nauyi, don haka saman matsayin shaft mai juyawa da zoben ciki mai ɗaukar nauyi zai haifar da ƙananan wuraren tsatsa ko tabo na baka mai tsiri saboda fitar baka, wanda ya isa ya ƙone littafin da harsashin bearing.

Bisa ga tsari da ƙa'idar aiki na janareta mai daidaitawa, saboda haɗakar haɗin tsakiyar stator, haɗin takardar ƙarfe na stator silicon, gibin iska tsakanin stator da rotor bai daidaita ba, tsakiyar shaft bai daidaita da cibiyar filin maganadisu ba, da sauransu, babban shaft na na'urar ba makawa zai juya a cikin filin maganadisu mara cikawa. Ta wannan hanyar, ana samar da ƙarfin AC a ƙarshen shaft ɗin biyu.