N’chifukwa chiyani injini ili ndi mphamvu ya shaft current? Kodi mungapewe bwanji ndikuilamulira?

Mphamvu ya shaft ndi vuto lofala komanso losapeweka la ma mota amphamvu komanso ma mota osinthasintha. Mphamvu ya shaft imatha kuwononga kwambiri makina oyendetsera injini. Pachifukwa ichi, opanga magalimoto ambiri amagwiritsa ntchito makina oteteza kutentha kapena njira zodutsa kuti apewe mavuto a mphamvu ya shaft. Kupanga mphamvu ya shaft kumachitika chifukwa cha kudutsa kwa mphamvu ya maginito yosinthasintha nthawi kudzera mu dera lopangidwa ndi shaft ya mota, ma bearing, ndi chipinda choyendetsera, zomwe zimayambitsa mphamvu ya shaft pa shaft ndikupanga mphamvu pamene dera likuyatsidwa. Ndi vuto lamphamvu lamagetsi otsika, lomwe limayambitsa kuwonongeka kwakukulu kwa makina oyendetsera injini ndipo lidzawononga ma bearing pakapita nthawi yochepa chifukwa cha kukokoloka kwa magetsi. Kuboola kwa core ya mota ndi pepala looneka ngati fan lomwe lili ndi mipata yomwe ili ndi maziko. Pakati pogawanika kwa mota yayikulu ndi kusinthasintha kwa rotor ndi zinthu zofunika kwambiri popanga mphamvu ya shaft. Chifukwa chake, mphamvu ya shaft imakhala vuto lalikulu la ma mota akuluakulu.

Pofuna kupewa vuto la shaft current, njira zofunika ziyenera kutengedwa posankha ndi kupanga zigawo ndi zigawo kuti zichotse zinthu zomwe zimapangitsa shaft current. Chiwerengero cha seams S pa circumference chimayendetsedwa ndikusinthidwa ndi ubale pakati pa S ndi greatest common divisor t ya chiwerengero cha ma motor pole pairs. Pamene S/t ili nambala yofanana, mikhalidwe yopangira shaft voltage siikwaniritsidwa, ndipo mwachibadwa sipadzakhala shaft current; pamene S/t ili nambala yosamvetseka, n'zotheka kuti shaft voltage ipangidwe, ndipo shaft current ipangidwe. Ngakhale mtundu uwu wa mota ndi industrial frequency motor, padzakhala mavuto a shaft current. Chifukwa chake, pa ma motors akuluakulu, njira zopewera shaft current nthawi zambiri zimatengedwa.

Kuphatikiza apo, ma harmonics apamwamba a ma mota a ma frequency osinthasintha ndi chimodzi mwa zifukwa zomwe zimapangitsa kuti shaft current igwire ntchito. Kaya mota ya ma frequency osinthasintha ndi yamphamvu bwanji, pakhoza kukhala shaft current, motero ma mota ambiri ang'onoang'ono a ma frequency osinthasintha amagwiritsa ntchito ma bearing otetezedwa, pomwe ma mota ambiri amphamvu amagwiritsa ntchito ma insulated end cover, kapena kutenga njira zotetezera pamalo oteteza shaft bearing; kuti atsimikizire kuti ma mota a ma frequency osinthika ndi magawo wamba a ma mota a ma frequency a mafakitale akugwirizana, opanga ena amatenga njira zodutsa pamalo oteteza shaft.