Carbon Brush For Motor

Carbon Brush yeMotor

Brushes are usually called carbon brushes in electric tools. It is a component of the motor. In addition to connecting the electrone and the external circuit in the motor, it also plays the role of a current. A weak and important link of the motor is formed by the brush with the directioner. There is not only mechanical wear and mechanical vibration between the brush and the directioner, but also a severe spark at the time of use, which will greatly reduce the life of the wiper, but also affect the normal operation of the motor. Therefore, the reasonable selection of brush materials, size and spring pressure, which will play a very important role in improving the directional performance of the motor and extending its service life.

Kusarudzwa kwebhurashi kunonyanya kuenderana nekushisa kukwira kwebhurashi, uye kutungamira kwekutungamira kwegwaro kunotsanangurwa. Kukwira kwekushisa kwebhurashi kune hukama nehupamhi hwebristle nehuwandu hwekusangana kwekutungamira, kurasikirwa kwemuchina uye kupisa kwekupisa kwebhurashi. Kana kukurumidza kwemutsara wedenderedzwa yakanyanya, zviri nyore kupisa bhurashi uye mutungamiri, spark inowedzera, uye kupfeka kwebrashi uye wiper kunowedzera.
Nhanganyaya kune chimiro, kurongedza uye kuita kwemota kabhoni brashi
Kubva pamaonero ekushandiswa, pane kunyanya zvinotevera zviratidzo zvekushandiswa kwemabhurashi akanaka: zvinotevera mamiriro:

1) Kana bhurashi richimhanya, rinopisa, ruzha, hapana kukanganisa, hapana ruvara, kwete kupisa;

2) Iva nekuita kwakanaka kwekutungamira, inhibisa spark munzvimbo inobvumidzwa, uye kurasikirwa kwesimba kudiki;

3) Hupenyu hurefu hwebasa uye usapfeka wiper, usaite kuti wiper scratch, kusaenzana, kupisa, kudhirowa, nezvimwe;

4) Panguva yekushanda, yunifomu, ine mwero, uye yakagadzikana yakaonda oxide firimu inogona kuumbwa nekukurumidza pamusoro peanotungamira.


Chimiro chebhurashi
Iyo yekumisikidza dhizaini yebhurashi yegraphite ndeye: radial mhando, kumashure kurerekera uye kumberi -tilt. Mune iyo inowanzoshandiswa radial chimiro, kumanikidzwa kwechirimo kwakasiyanawo. Kunonyanya kunzi nest line springs, spiral springs, uye stretch spring. Idzi nzira nhatu dzekutsikirira kwechirimo ndedzekuita zvakananga pabhurashi nekudzvanywa kwechitubu; Essence

Classification uye kushanda kwebhurashi

1. Kuronga
Mabhurashi anowanzo kupatsanurwa zvinoenderana nekwavo embryo zvinhu kuumbwa uye maitiro ekurapa nzira

a. Carbon graphite brush

Natural graphite bhurashi: mabhurashi akadai ane yakakwirira yekubata voltage, yakanaka kugadzirisa kuita, yakaderera-kuyerera kuita yakadzikira pane yemagetsi graphite bhurashi, yakanaka yekuzora kuita, uye inoshandiswa kune yakakwira mitsetse ine yakakwira mitsara inomhanya.

Resin bonding graphite brashi: Iri rudzi rwebhurashi rinoratidzwa nekupokana kukuru, kuderedzwa kubata voltage, yakanaka shanduko yekuita, antioxidant, uye abrasion kuramba yakanakira, asi mashandisirwo emagetsi anonyanya kushandiswa kuAC kutenderera mota.

b. Electrifying graphite brush

Graphite-based brush (soft brush): Inoratidzwa ne-low friction coefficients, yakanaka lubrication performance, good setting performance, thermal stability, uye antioxidant performance; mahombe anopindirana mota ane kumhanya kwemutsara wepamusoro uye nekukasira mitoro Makuru anotenderedza mota, uye madiki uye epakati-saizi DC mota;

Coke base bhurashi (yepakati yakaoma bhurashi): Inoratidzwa nehombe yekubata voltage kudonha, ine kugona kwakanaka kuumba firimu, ine kugona kwakanaka kutsiva gwara, ine kumwe kuyerera kwemamotor anotenderedza ane imwe mhedzisiro mutoro, etc. Uye general DC mota dzine voltage yakakwira kupfuura 220V;

Kabhoni inki bhurashi (yakaoma bhurashi): Rudzi urwu rwebhurasho nderweyakakwira-resistance bhurashi re electro-chemical graphite brush. Iyo inoratidzirwa nehombe bhurashi yekubata kuramba uye yakanaka kutungamira kuita. Inoshandiswa kune DC motors nekunetseka mukuchinja nzira.

c. Metal graphite brush class
Inosanganisira simbi uye graphite. Hunhu hwesimbi uye graphite hunogadziriswa nemaitiro ezvakanaka simbi conductivity uye yakanaka lubricating lubrication. Iyo inoratidzirwa nediki yekusangana voltage, resistance coefficient uye kurasikirwa kwemagetsi. Iri bhurashi rinonyanya kushandiswa kune yakaderera -voltage mahombe ezvino mota uye yakaderera -voltage AC inomonereka mota.

Natural graphite bhurashi uye electroextburra bhurashi resistor coefficients uye bhurashi pressure madonhwe akakura, anowedzera abrasion kusagadzikana, uye kumhanya kwemutsara kunobvumirwa kushandiswa (inogona kusvika 50 ~ 70m/s). Metal graphite brashi resistor coefficient uye brashi voltage inodzikira zvishoma, uye abrasion kuramba haina kunaka. Mutsara wekumhanya unobvumirwa kushandisa wakaderera. Inenge 15 ~ 35m/s.

2. Kuita
Zvinhu zvikuru zve teknolojia yebhurashi zvinosanganisira resistors, kuoma, kuoma pane peya yemabhurashi, friction coefficients, 50H kupfeka, etc. Iko kupikisa coefficient ihuwandu hwemuviri kuyera conductive performance. Pa230V, iyo yemagetsi brashi resistor coefficient inogona kusarudzwa yakakura, uye iyo 120V brashi resistor coefficient inofanira kunge iri diki. Magetsi 120V mota dzemagetsi dzine simba rimwechete rakakura kudarika 230V. Kupisa, tembiricha yekubata inogona kunge yakanyanya kushata.

Iko kudonha kwemagetsi kudonha kwepeya yemabhurashi ndiwo mutsauko wemusiyano unokwanisa pakati peinoyerera ichipinda mubhurashi kuburikidza nekuchinja kune bhurashi. Kana bhurashi richisangana nemumwe, uye kushorwa kwenzvimbo yekubata kana iyo yekusangana inoitika pasi pekuita kwemasimba ekunze, inonzi friction. Chiyero chekukwesha uye kudzvanywa kwechirimo ndiyo friction coefficient yebhurashi uye inotungamira. 50H yekupfeka kukosha: Pasi pemamiriro akatsanangurwa ekuedza, bhurashi inotemerwa neazvino density uye yakatemerwa unit pressure. Kana iyo transitional line kumhanya iri 15m/s, huwandu hwekupfeka kwebhurashi hunogayiwa ne50h.