描述
要想消除電動(dòng)機(jī)振動(dòng),首先要查清產(chǎn)生振動(dòng)的原因,只有找到振動(dòng)的原因,才能采取有針對(duì)性的措施,消除電動(dòng)機(jī)振動(dòng)。
電動(dòng)機(jī)未停機(jī)之前,用測(cè)振表檢查各部振動(dòng)情況,對(duì)于振動(dòng)較大的部位按垂直水平軸向三個(gè)方向詳細(xì)測(cè)試振動(dòng)數(shù)值,如果是地腳螺絲松動(dòng)或軸承端蓋螺絲松動(dòng),則可直接緊固,緊固后在測(cè)其振動(dòng)大小,觀察是否有消除或減輕,其次要檢查電源三相電壓是否平衡,三相熔絲是否有燒斷現(xiàn)象,電動(dòng)機(jī)的單相運(yùn)行不僅可以引起振動(dòng),還會(huì)使電機(jī)的溫度迅速上升,觀察電流表指針是否來回?cái)[動(dòng),轉(zhuǎn)子斷條時(shí)就出現(xiàn)電流擺動(dòng)現(xiàn)象,最后檢查電機(jī)三相電流是否平衡,發(fā)現(xiàn)問題及時(shí)與運(yùn)行人員聯(lián)系停止電機(jī)運(yùn)行,以免將電機(jī)燒損。
如果對(duì)表面現(xiàn)象處理后,電機(jī)振動(dòng)未解決,則繼續(xù)斷開電源,解開聯(lián)軸器,使電機(jī)與之相連的負(fù)載機(jī)械分離,單轉(zhuǎn)電機(jī),如果電機(jī)本身不振動(dòng),則說明振源是聯(lián)軸器沒找正或負(fù)載機(jī)械引起的,如果電機(jī)振動(dòng),則說明電機(jī)本身有問題,另外還可以采取斷電法來區(qū)分是電氣原因,還是機(jī)械原因,當(dāng)停電瞬間,電動(dòng)機(jī)馬上不振動(dòng)或振動(dòng)減輕,則說明是電氣原因,否則是機(jī)械故障。
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