Dab tsi yog hom thiab kev ua haujlwm ntawm commutator ntawm DC lub cev muaj zog?

2022-01-11

Lub commutator yog ib feem tseem ceeb ntawm dc lub cev muaj zog thiab AC commutator armature. Lub commutator siv lub zog rau qhov zoo tshaj plaws txoj hauj lwm ntawm lub rotor thiab tsim ib tug ruaj khov rotational quab yuam (torque) los ntawm reversing cov kev taw qhia ntawm tam sim no nyob rau hauv lub armature txav coil ntawm lub cev muaj zog. Nyob rau hauv ib lub cev muaj zog, ib tug ntaus ntawv uas converts lub square yoj teeb liab ntsuas los ntawm lub ntsuas electrode rau hauv pulsating ncaj tam sim no los ntawm reversing cov kev taw qhia ntawm tam sim no nyob rau hauv lub rotating winding txhua ib nrab tig los ntawm kev siv ib tug tam sim no commutator rau lub winding.

Lub commutator yog ib qho kev npaj ntawm rwb thaiv tsev thiab tooj liab strips txuas nrog lub kauj ntawm lub cev muaj zog los muab qhov rov qab tam sim no rau lub kauj ntawm lub cev muaj zog. Commutation yog qhov thim rov qab ntawm cov kev taw qhia tam sim no. Raws li lub commutator ntawm ntau yam sib txawv thiab ntau yam kev ntsuas sab hauv tsim yog muab faib ua ib qho commutator thiab dav hlau commutator, ib qho commutator rau cylindrical, tooj liab strip sib npaug rau lub qhov, nws yog yam ntxwv los ntawm cov qauv yooj yim, kev tsim khoom siab. Integral commutators muaj nyob rau hauv peb yam yooj yim: tooj liab thiab mica, huab niam pwm thiab molded vaj tse. Planar commutator zoo li ib tug kiv cua nrog ib tug tooj liab sawb nrog ib tug kiv cua seem perpendicular mus rau lub qhov.

Peb hom molded commutators

Nrog kev siv cov yas puab lub qhov thiab rotating ncej, cov qauv yog yooj yim, tab sis qhov luaj li cas ntawm cov yas puab lub qhov yog tsis yooj yim rau tuav, yuav tsum nruj me ntsis tswj qhov luaj li cas ntawm lub siab tuag thiab cov yas shrinkage tus nqi, thiaj li yuav ua kom lub siab ntev. ntawm lub qhov taub, yuav tsum tau sim kom tsis txhob muaj lub siab zoo ntawm kev ua cov yas, yas machining kev ua tau zoo feem ntau tsis zoo.

Lub tes tsho tooj liab yog nias ua ke nrog cov yas, thiab qhov loj ntawm lub qhov taub yog ib qho yooj yim kom tau raws li qhov yuav tsum tau ua. Txhawm rau tiv thaiv kev txav ntawm cov yas thiab lub tes tsho, lub tsho sab nrauv ntawm lub tes tsho feem ntau furrowed los yog knurled. Cov khoom siv tes tsho tuaj yeem yog tooj liab, hlau lossis aluminium alloy. Tab sis nws yuav tsum tau muab sau tseg hais tias lub hardness ntawm cov khoom yuav tsum phim lub hardness ntawm lub rotor ncej, me ntsis qis dua lub hardness ntawm lub rotor ncej.

Lub nplhaib ntxiv dag zog ntxiv rau hauv qhov zawj ntawm lub commutator. Nws yog feem ntau siv los dais lub centrifugal quab yuam ntawm hluav taws xob teb thaum lub cheeb ntawm lub commutator yog subdivided thiab qhov siab yog nce. Lub rwb thaiv tsev ntawm lub nplhaib thiab cov khoom sib txuas yuav tsum tau ua kom ntseeg tau. Nrog rau cov rings stiffening, txoj kab uas hla ntawm lub commutator tuaj yeem ua tau txog li 500.

Plane commutator

Nyob rau hauv qhov tseeb, nws kuj yog ib tug molded commutator, thiab tooj liab nto nyob rau hauv kev sib cuag nrog txhuam yog lub nplhaib dav hlau, qhov tseeb, hu ua lub dav hlau commutator, lub commutator no muaj ib tug tshwj xeeb qauv, nyob rau hauv daim ntawv tooj liab thiab ib txheej ntawm graphite, nws lub luag haujlwm yog los hloov qhov kev sib txhuam ntawm cov commutator thiab carbon txhuam, ua kom lub neej ntev ntawm lub commutator.

Peb hom commutator ua

Kev sib dhos ncaj qha ntawm lub commutator, qhov loj ntawm lub commutator yog me me, feem ntau ntxig rau sab qis ntawm daim ntawv tooj liab mus rau hauv lub commutator lub cev, thiab tom qab ntawd siv lub nplhaib tooj liab los nias daim ntawv tooj liab ntawm sab nraud ncig ntawm lub commutator, vim lub geometric loj ntawm cov khoom yog me me, mechanical processing nyuaj, qhov tseeb ntawm commutator feem ntau yog tsawg.

Lub phaj tooj ntawm lub commutator muaj ib tug nuv nyob rau sab saum toj thiab ob tug ncaj convex cov hauv paus hniav yog muab tso rau hauv lub commutator lub cev feem, thiaj li hais tias cov tooj liab phaj yog ze ze rau lub txheej ncig ntawm lub commutator, thiab ces lub phaj tooj liab yog tsau nrog. ob sab inverted buckles. Qhov no commutator nyob rau hauv tig feed kom muaj nuj nqis yog loj heev los tsim cov ntaub ntawv ya davhlau ya nyob twg, nyob rau hauv tig yuav tsum tswj cov khoom noj kom muaj nuj nqis nyob rau hauv ib tug tej yam ntau yam. Yog tias tsim nyog, ob peb txoj kev tshuab dhos ntxiv tuaj yeem siv tau kom tau txais cov txiaj ntsig xav tau.

Mechanical kev twb kev txuas commutator, qhov no yog ib tug split commutator, tom qab lub sib dhos ntawm tsib yam, feem ntau hu ua "tsib nyob rau hauv ib", lub sab saum toj ntawm lub phaj tooj liab muaj ib tug indented nplhaib buckle, buckle nyob rau hauv lub convex commutator lub cev, nyob rau hauv qis ib feem ntawm lub invert buckle rau hauv commutator txhawb lub cev, muaj kev sib txuas commutator lub cev thiab txhawb lub cev. Tom qab tev tawm cov xim tawv hlau, cov tooj liab ntawm lub commutator txuas nrog cov xim tawv hlau. Cov commutator no tseem yuav tsim cov khoom ya tsis zoo yog tias qhov txiav ntau dhau thaum tig.

xaus

Lub commutator phaj yog txuas nrog lub coils ntawm armature. Tus naj npawb ntawm cov coils nyob ntawm qhov ceev thiab voltage ntawm lub cev muaj zog. Cov txhuam hniav tooj liab yog qhov zoo dua rau qhov tsis tshua muaj hluav taws xob thiab qhov siab tam sim no, thaum lub siab tsis kam ntawm cov roj carbon txhuam ua rau lub zog loj dua. Copper's high conductivity txhais tau tias cov khoom tuaj yeem ua kom me me thiab nyob ze ua ke. Siv lub cam khwb cia tooj liab commutator tuaj yeem txhim kho nws cov kev ua tau zoo, tam sim no yuav ntws tau yooj yim hauv tooj liab, thiab lub cev muaj zog feem ntau yog 85 mus rau 95 feem pua ​​​​ntawm kev hloov lub zog rau nws cov load. Electronic commutation siv cov khoom siv hluav taws xob hauv lub xeev tsis siv cov khoom siv hluav taws xob thiab cov txhuam hniav sib txuas, thiab kev tshem tawm cov txhuam hniav txhais tau tias tsis muaj kev sib txhuam los yog hnav ntawm lub cev thiab kev ua haujlwm zoo dua. Cov hom motors no yuav raug nqi ntau dua thiab nyuaj dua li cov tshuab txhuam hniav yooj yim vim tias xav tau cov tswj thiab cov khoom siv hluav taws xob.



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