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重慶電機維修介紹正確維修磁電機的步驟

文章出處:maituwangluo.com  |  發布時間:2019/12/12 10:55:48  |  瀏覽次數:512

重(zhong)慶電機維(wei)修介紹正確維(wei)修磁電(dian)機的步(bu)驟(zou)

要正確使用(yong)維護好磁電機(ji),除認真做好高調整外,還要密(mi)切關(guan)注,不能(neng)產生高壓火花現象(xiang),以高效(xiao)率發揮其(qi)應有的作用(yong)。
1 磁電機(ji)檢(jian)查(cha)調整順序
1.1 首先檢查(cha)轉子(zi)
用手(shou)轉(zhuan)動轉(zhuan)子(zi)軸,在磁極換向時,先是手(shou)感像(xiang)壓(ya)縮彈簧一(yi)樣阻力逐漸增大,至中立(li)點后又(you)會突(tu)然自行旋轉(zhuan),但整周轉(zhuan)動過(guo)程中應無摩(mo)擦卡滯感。如有,就可(ke)能(neng)是軸承過(guo)度磨(mo)損(sun)(sun)或已損(sun)(sun)毀,造(zao)成定子(zi)和(he)轉(zhuan)子(zi)相(xiang)互刮擦。
1.2 驗看觸點(dian)狀況(kuang)
以手或(huo)工具扳開兩(liang)觸點觀察,如有附著(zhu)污物應加以清洗;如有輕微燒蝕,可(ke)用(yong)“0”號(hao)砂紙條(tiao)對(dui)折,使(shi)兩(liang)砂面向(xiang)外(wai),夾在觸點間來回(hui)抽(chou)動磨(mo)光(guang);如嚴重燒蝕,就應卸下觸點,用(yong)油石磨(mo)光(guang)后裝復,或(huo)干(gan)脆更換新件。
1.3 電(dian)容(rong)器狀況

重慶電機維修


此電容損壞率并不高,如確需檢查(cha),可(ke)卸下,以萬用(yong)表(biao)高阻擋位反(fan)復接觸外(wai)(wai)殼和(he)中心電極,如每(mei)次表(biao)針(zhen)均擺(bai)回(hui)“0”,即表(biao)明該電容基本正常(chang)。需要注意的(de)是(shi),電容外(wai)(wai)殼與夾持(chi)板及(ji)底座(zuo)常(chang)由于(yu)臟污生(sheng)銹而接觸不良,造(zao)成(cheng)火花塞跳火微弱。
1.4 正確調(diao)整(zheng)
一般使用(yong)說明書上均(jun)有調整(zheng)觸(chu)(chu)(chu)(chu)點(dian)(dian)(dian)大間(jian)(jian)隙0.3 mm。對(dui)于(yu)觸(chu)(chu)(chu)(chu)點(dian)(dian)(dian)安(an)裝(zhuang)底(di)(di)板(ban)(ban)已經(jing)拆卸過(guo)而又安(an)裝(zhuang)不當的(de)磁(ci)(ci)(ci)(ci)電(dian)(dian)(dian)機(ji),僅調整(zheng)觸(chu)(chu)(chu)(chu)點(dian)(dian)(dian)間(jian)(jian)隙是不行的(de)。這是因為磁(ci)(ci)(ci)(ci)電(dian)(dian)(dian)機(ji)點(dian)(dian)(dian)火(huo)的(de)初級電(dian)(dian)(dian)流,不同于(yu)汽車(che)用(yong)蓄電(dian)(dian)(dian)池點(dian)(dian)(dian)火(huo)線圈存在(zai)恒定(ding)(ding)(ding)的(de)蓄電(dian)(dian)(dian)池電(dian)(dian)(dian)壓(ya)(ya)供應,只有磁(ci)(ci)(ci)(ci)電(dian)(dian)(dian)機(ji)轉子(zi)磁(ci)(ci)(ci)(ci)極與(yu)定(ding)(ding)(ding)子(zi)極掌處于(yu)極性交(jiao)換(huan)(huan)過(guo)渡的(de)某(mou)一特定(ding)(ding)(ding)位(wei)置時(shi)(shi),才會感(gan)(gan)生出大的(de)電(dian)(dian)(dian)流,也只有此時(shi)(shi)斷(duan)電(dian)(dian)(dian)器斷(duan)開(kai),次(ci)級線圈才會感(gan)(gan)生出最強的(de)跳火(huo)電(dian)(dian)(dian)壓(ya)(ya)。為保證(zheng)此種(zhong)關系,觸(chu)(chu)(chu)(chu)點(dian)(dian)(dian)安(an)裝(zhuang)底(di)(di)板(ban)(ban)下(xia)方(fang)與(yu)殼(ke)體間(jian)(jian)有刻線標(biao)識。但遇到下(xia)述情(qing)況時(shi)(shi)刻線位(wei)置是無(wu)法確(que)定(ding)(ding)(ding)的(de):底(di)(di)板(ban)(ban)刻線不清,底(di)(di)板(ban)(ban)與(yu)殼(ke)體并非原裝(zhuang),交(jiao)換(huan)(huan)底(di)(di)板(ban)(ban)進(jin)行左(zuo)旋和右(you)旋磁(ci)(ci)(ci)(ci)電(dian)(dian)(dian)機(ji)的(de)改型(xing)。采用(yong)下(xia)述方(fang)法可大致(zhi)確(que)定(ding)(ding)(ding)上述極性交(jiao)換(huan)(huan)過(guo)渡的(de)某(mou)一特定(ding)(ding)(ding)位(wei)置:先將兩個底(di)(di)板(ban)(ban)固(gu)定(ding)(ding)(ding)螺(luo)釘(ding)(ding)稍(shao)加松退,再(zai)轉動(dong)偏心(xin)調整(zheng)螺(luo)釘(ding)(ding)于(yu)中(zhong)位(wei),用(yong)手(shou)(shou)緩(huan)慢旋動(dong)轉子(zi),并觀(guan)(guan)察軸(zhou)頭斷(duan)電(dian)(dian)(dian)凸輪在(zai)快要頂起動(dong)觸(chu)(chu)(chu)(chu)點(dian)(dian)(dian)時(shi)(shi),以手(shou)(shou)感(gan)(gan)確(que)定(ding)(ding)(ding)磁(ci)(ci)(ci)(ci)力(li)(li)由阻力(li)(li)變為引力(li)(li)的(de)交(jiao)變點(dian)(dian)(dian)并嚴格固(gu)定(ding)(ding)(ding)。此時(shi)(shi)觀(guan)(guan)察兩觸(chu)(chu)(chu)(chu)點(dian)(dian)(dian),如(ru)(ru)剛(gang)好微(wei)開(kai),便可把兩底(di)(di)板(ban)(ban)固(gu)定(ding)(ding)(ding)螺(luo)釘(ding)(ding)緊固(gu);如(ru)(ru)兩觸(chu)(chu)(chu)(chu)點(dian)(dian)(dian)未開(kai)或開(kai)得(de)(de)過(guo)大,可將底(di)(di)板(ban)(ban)稍(shao)作轉動(dong),使觸(chu)(chu)(chu)(chu)點(dian)(dian)(dian)剛(gang)好微(wei)開(kai)后(hou)再(zai)緊固(gu)。大開(kai)度是否符(fu)合規(gui)定(ding)(ding)(ding),如(ru)(ru)相(xiang)差過(guo)大,可對(dui)偏心(xin)螺(luo)釘(ding)(ding)稍(shao)加調整(zheng)后(hou),再(zai)重(zhong)復上述觸(chu)(chu)(chu)(chu)點(dian)(dian)(dian)開(kai)啟時(shi)(shi)間(jian)(jian)的(de)調整(zheng),就會獲得(de)(de)滿(man)意的(de)效果,即用(yong)高壓(ya)(ya)線對(dui)機(ji)殼(ke)作手(shou)(shou)轉動(dong)打火(huo)試驗,打火(huo)的(de)距離一般在(zai)7 mm以上。

 

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