ʻO nā mea waiwai a me nā mea nui o nā palaki kalapona

ʻO nā mea a me nā mea nui o nā palaki kalapona

Palaki kalaponaor electric brushes are widely used in electrical equipment. They are used to transmit signals or energy between the fixed part and the rotating part of some motors or generators. The shape is rectangular, and metal wires are installed in the spring. Carbon brushes are a kind of sliding contact, so it is easy to wear and needs to be replaced regularly and the carbon deposits that have been worn away must be cleaned.

ʻO ka mea nui o ka pulupulu kalapona kalapona. I ka hana ʻana, kaomi ʻia e kahi pūnāwai e hana i ka ʻāpana ʻōwili e like me ka pulupulu, no laila ua kapa ʻia ʻo ia he palaki kalapona. ʻO ka graphite ka mea nui.

ʻO ka graphite kahi mea kūlohelohe, ʻo ia ka mea nui ʻO ka ʻāpana he kalapona, ʻeleʻele ke kala, opaque, semi-metallic luster, haʻahaʻa ʻo ka paʻakikī, hiki ke ʻohi ʻia me nā manamana lima, ʻo ka graphite a me ke daimana he kalapona, akā, ʻokoʻa loa ko lākou mau waiwai, ʻo ia ke kumu o ka ʻokoʻa hoʻonohonoho ʻana o nā ʻātoma kalapona. ʻOiai he kalapona ka haku mele ʻana o ka graphite, ʻo ia He mea hoʻoheheʻe kiʻekiʻe me ka helu heheʻe o 3652°C. Ke hoʻohana nei keia kiʻekiʻe wela kū'ē waiwai, graphite hiki ke hana i a kiʻekiʻe kiʻekiʻe wela kemika crucible.

ʻO ka conductivity uila o ka graphite maikaʻi loa, ʻoi aku ka nui o nā metala a me nā haneli haneli o nā metala ʻole, no laila ua hana ʻia i loko o nā ʻāpana conductive e like me nā electrodes a me nā pulupulu kalapona; ʻO ka hana o loko o ka graphite e hoʻoholo i kona lubricity maikaʻi, a pinepine mākou E hoʻohana ia mea ma nā puka ʻaʻa ʻO ka hoʻokomo ʻana i ka lepo penikala a i ʻole graphite i loko o ka laka ʻoi aku ka maʻalahi o ka wehe ʻana i ka puka. ʻO kēia ka hopena lubricating o ka graphite.

Palaki kalaponahoʻohana maʻamau i DC nā mea uila. Hoʻokumu ʻia nā motika palaki me kahi stator a me kahi rotor. In he motor DC, i mea e hoohuli ai ka rotor, ke kuhikuhi o ke au pono e hoʻololi mau, inā ʻaʻole hiki i ka rotor ke hoʻololi wale i ka hapalua a pōʻai. He koʻikoʻi koʻikoʻi nā pulupulu kalapona i nā motika DC. Palaki kalapona e hana i ke au ma waena o nā ʻāpana neʻe o ke kaʻa. He sliding kēia conduction conduction hiki ke hoʻololi i ke au mai ka hopena paʻa i ka ʻāpana wili o ka mīkini hoʻoheheʻe a i ʻole ka moto. Hoʻokumu ʻia kahi pahu kalapona i kekahi mau pulu kalapona, No laila, maʻalahi kēia ʻano hoʻokele i nā pulupulu kalapona e ʻaʻahu, a me ka hoʻololi hoʻi nā pulu kalapona i ke ala o ke au, ʻo ia hoʻi, ke kuleana o ka hoʻololi ʻana.

Hoʻohana ka mīkini palaki i ka mechanical ka hoʻololi ʻana, ʻaʻole e neʻe ka pole magnetic o waho a neʻe ka ʻōwili i loko. I ka hana ana o ka motika, huli pu ka commutator a me ka coil, a me ka ʻAʻole neʻe ka pulupulu kalapona a me ke kila magnetic, no laila ka commutator a me ka ʻO ka pulupulu kalapona e hoʻohua i ka friction e hoʻopau i ka hoʻololi ʻana o ke au kuhikuhi.

E like me ka holo ʻana o ke kaʻa, nā wili ʻokoʻa a i ʻole ʻelua mau ʻanuʻu like ʻole o ka pōʻai hoʻokahi i hoʻoikaika ʻia, i hiki ai i nā pou ʻelua o ʻo ke kahua mākēneki i hana ʻia e ka pōʻai he kihi me ka pili ʻana o nā pou ʻelua i ka stator magnet mau loa, a ua hanaia ka mana ma o ka ka hoʻokuke ʻana o ka pou like a me ka huki ʻana o ka pou kūʻē e hoʻokele i ka kaʻa e hoʻohuli.

Palaki kalaponahoʻohana ʻia ma AC mea lako. ʻO ke ʻano a me ke ʻano o nā ʻāpana kalapona AC motor a me ka motor DC ua like nā palaki kalapona. I nā motika AC, hoʻohana ʻia nā pulupulu kalapona i kekahi ʻO nā rotors wiliwili pono e hoʻololi i ka wikiwiki, e like me kā mākou hana uila maʻamau a me nā mīkini poli, a pono lākou e hoʻololi pinepine i nā pulupulu kalapona.