1.電機(ji)維修主傳動(dong)電機(ji)運(yun)(yun)轉(zhuan)不正(zheng)常滑差電機(ji)在運(yun)(yun)轉(zhuan)過程中(zhong)會(hui)劇烈振動(dong)，引起軸承(cheng)發(fa)熱。拆開(kai)離合器電樞與(yu)磁(ci)極(ji)轉(zhuan)子，檢查電機(ji)的軸承(cheng)是否嚴重缺乏潤滑油(you)脂(zhi)，而造成軸承(cheng)嚴重磨損，電動(dong)機(ji)的運(yun)(yun)轉(zhuan)性(xing)能(neng)下降。此時需要(yao)更換(huan)已損壞的軸承(cheng)，并加(jia)注好潤滑油(you)脂(zhi)。正(zheng)常情況下，應(ying)對這(zhe)部(bu)分(fen)機(ji)構的所(suo)有部(bu)件進行(xing)一次清(qing)洗、加(jia)油(you)，以保證主傳動(dong)電機(ji)的正(zheng)常運(yun)(yun)行(xing)。

2.主機(ji)轉(zhuan)速(su)周期性下(xia)降出現這種(zhong)情(qing)況(kuang)，大(da)多數是因機(ji)械部分發(fa)生了故(gu)障(zhang)所引起，調速(su)電機(ji)的(de)(de)(de)膠輥(gun)比較多，每根(gen)膠輥(gun)靠軸承來支撐動(dong)彈。如果某(mou)根(gen)膠輥(gun)的(de)(de)(de)任何一端軸承發(fa)生了故(gu)障(zhang)，都可能(neng)使主機(ji)的(de)(de)(de)轉(zhuan)速(su)周期性地下(xia)峰(feng)，嚴重時，主機(ji)動(dong)彈會(hui)(hui)更加(jia)挫折(zhe)，應(ying)當即更換軸承才(cai)行。另外(wai)，應(ying)該注意主機(ji)各(ge)滾(gun)筒(包括印(yin)(yin)版，橡皮、壓印(yin)(yin)滾(gun)筒)的(de)(de)(de)軸承及其潤滑部位的(de)(de)(de)工作情(qing)況(kuang)是否正常，如果發(fa)生故(gu)障(zhang)同樣(yang)會(hui)(hui)影響印(yin)(yin)刷速(su)度(du)。

3.調(diao)速(su)(su)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)升速(su)(su)后機(ji)(ji)(ji)速(su)(su)又(you)逐漸(jian)下降(jiang)以至停機(ji)(ji)(ji)出(chu)現這(zhe)(zhe)(zhe)種情況，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)維修需要觀察調(diao)速(su)(su)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)氣(qi)(qi)柜里的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流表指針的(de)(de)變化。如(ru)果(guo)其指示電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流急劇增大(da)(da)，則主電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)的(de)(de)熱(re)(re)繼電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器等過載(zai)保護(hu)裝(zhuang)置(zhi)必然(ran)會產生保護(hu)動作，使主電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)斷開三相電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源而(er)(er)(er)住(zhu)手運(yun)轉(zhuan)。這(zhe)(zhe)(zhe)時(shi)需要認真檢查主電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)回(hui)路(lu)的(de)(de)有關接(jie)(jie)(jie)線元(yuan)(yuan)(yuan)件(jian)(jian)及主電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)的(de)(de)交流接(jie)(jie)(jie)觸(chu)器，調(diao)速(su)(su)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)氣(qi)(qi)柜里的(de)(de)所有熱(re)(re)繼電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器等過載(zai)保護(hu)裝(zhuang)置(zhi)的(de)(de)接(jie)(jie)(jie)線部(bu)位是(shi)否(fou)松動，接(jie)(jie)(jie)觸(chu)是(shi)否(fou)不(bu)(bu)良而(er)(er)(er)發熱(re)(re)。如(ru)果(guo)這(zhe)(zhe)(zhe)些部(bu)位有標題(ti)題(ti)目(mu)(mu)，則會在(zai)主電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)增速(su)(su)后，由于(yu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)中的(de)(de)導線和元(yuan)(yuan)(yuan)件(jian)(jian)接(jie)(jie)(jie)觸(chu)不(bu)(bu)良使電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流迅速(su)(su)增大(da)(da)，而(er)(er)(er)引(yin)起保護(hu)性的(de)(de)停機(ji)(ji)(ji)。當調(diao)速(su)(su)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)運(yun)轉(zhuan)速(su)(su)度(du)較低時(shi)，由于(yu)主電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)的(de)(de)工作電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流較小(xiao)而(er)(er)(er)不(bu)(bu)會發生氣(qi)(qi)希望(wang)速(su)(su)逐漸(jian)下降(jiang)以至停機(ji)(ji)(ji)的(de)(de)情況，但是(shi)，當調(diao)速(su)(su)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)升速(su)(su)時(shi)，用電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)負(fu)荷大(da)(da)，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)氣(qi)(qi)元(yuan)(yuan)(yuan)件(jian)(jian)的(de)(de)故(gu)障就(jiu)會顯露出(chu)來(lai)。在(zai)實際工作中，有時(shi)可以看到調(diao)速(su)(su)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)氣(qi)(qi)柜內(nei)的(de)(de)接(jie)(jie)(jie)線端子由于(yu)導線接(jie)(jie)(jie)觸(chu)不(bu)(bu)良而(er)(er)(er)發熱(re)(re)，甚至在(zai)連(lian)接(jie)(jie)(jie)處出(chu)現氧化物層(ceng)，導線的(de)(de)絕緣(yuan)外(wai)反(fan)燒焦變色，這(zhe)(zhe)(zhe)些標題(ti)題(ti)目(mu)(mu)都會嚴重影響主傳動電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)的(de)(de)正常運(yun)轉(zhuan)。這(zhe)(zhe)(zhe)時(shi)需要操作人員當即

取(qu)相應措施，如清理接(jie)(jie)線端子和導線的(de)接(jie)(jie)觸面，緊(jin)固接(jie)(jie)線螺釘(ding)，去(qu)除燒壞(huai)了的(de)導線氧化物(wu)層，更換損壞(huai)嚴重的(de)接(jie)(jie)線端子等。

4.主傳(chuan)動(dong)(dong)(dong)(dong)(dong)電(dian)(dian)機(ji)(ji)運轉時(shi)(shi)噪(zao)聲較大為了(le)調(diao)整滑(hua)差電(dian)(dian)機(ji)(ji)動(dong)(dong)(dong)(dong)(dong)平(ping)衡(heng)(heng)，其電(dian)(dian)樞和(he)磁極轉子(zi)(zi)的兩端(duan)分別裝有配重(zhong)裝置。如果這(zhe)部分裝置稍有松動(dong)(dong)(dong)(dong)(dong)，那么滑(hua)差電(dian)(dian)機(ji)(ji)在高(gao)速(su)動(dong)(dong)(dong)(dong)(dong)彈時(shi)(shi)會偏離原(yuan)(yuan)釆的位置。故障(zhang)如果發(fa)生在主傳(chuan)動(dong)(dong)(dong)(dong)(dong)電(dian)(dian)機(ji)(ji)的外瑞面，電(dian)(dian)機(ji)(ji)維修會造成電(dian)(dian)樞和(he)磁極轉子(zi)(zi)的局部摩擦，使噪(zao)聲加大。這(zhe)時(shi)(shi)就需要停機(ji)(ji)修理(li)，恢(hui)復電(dian)(dian)樞和(he)磁極轉子(zi)(zi)的動(dong)(dong)(dong)(dong)(dong)平(ping)衡(heng)(heng)，并重(zhong)新找好原(yuan)(yuan)動(dong)(dong)(dong)(dong)(dong)平(ping)衡(heng)(heng)配重(zhong)的位置并將其固(gu)定好，使主傳(chuan)動(dong)(dong)(dong)(dong)(dong)電(dian)(dian)機(ji)(ji)正常運轉。