描述
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(lái)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(wèn)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(kāi)電源，解開(kāi)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(shuō)明振源是聯(lián)軸器沒(méi)找正或負(fù)載機(jī)械引起的，如果電機(jī)振動(dòng)，則說(shuō)明電機(jī)本身有問(wèn)題，另外還可以采取斷電法來(lái)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(shuō)明是電氣原因，否則是機(jī)械故障。檢查氣隙是否均勻，如果測(cè)量值超標(biāo)，重新調(diào)整氣隙。檢查軸承，測(cè)量軸承間隙，如不合格更換新軸承，檢查鐵心變形和松動(dòng)情況，松動(dòng)的鐵心可用環(huán)氧樹(shù)脂膠粘接灌實(shí)，檢查轉(zhuǎn)軸，對(duì)彎曲的轉(zhuǎn)軸進(jìn)行補(bǔ)焊重新加工或直接直軸，然后對(duì)轉(zhuǎn)子做平衡試驗(yàn)。打風(fēng)機(jī)電機(jī)大修后試運(yùn)行期間，電機(jī)不僅振動(dòng)大，而且軸瓦溫度超標(biāo)，連續(xù)處理幾天后，故障仍未解決。我班組人員在幫助處理時(shí)發(fā)現(xiàn)，電機(jī)氣隙非常大，瓦座水平也不合格，故障原因找到后，重新調(diào)整各部間隙后，電機(jī)試轉(zhuǎn)一次成功。把基礎(chǔ)上四個(gè)地腳螺栓全緊固，電機(jī)的振動(dòng)值仍然超標(biāo)，這時(shí)檢查軸伸上裝的聯(lián)軸器是否和軸肩靠平了，如不平，軸伸上多余的鍵產(chǎn)生的激振力會(huì)引起電機(jī)水平振動(dòng)超標(biāo)。這種情況振動(dòng)值超得不會(huì)太多，往往和主機(jī)對(duì)接后振動(dòng)值能下降，應(yīng)說(shuō)服用戶使用，二極電機(jī)在出廠試驗(yàn)時(shí)根據(jù)GB10068–2006在軸伸鍵槽內(nèi)裝在半鍵。多余的鍵就不會(huì)額外增加激振力。如需處理，只需把多余的鍵截去多出長(zhǎng)度的一般即可。
產(chǎn)品承諾：
保?證?全新原裝進(jìn)口,
保?證?安全準(zhǔn)時(shí)發(fā)貨，
保?證售后服務(wù)質(zhì)量，
優(yōu)勢(shì)價(jià)格，大量現(xiàn)貨。
主營(yíng)DCS系統(tǒng)配件
機(jī)器人系統(tǒng)配件
大型伺服系統(tǒng)配件
品牌：ABB???,AB??,GE,FOXBORO,本特利，英維思，伍德沃德，西屋，瑞恩，施耐德，西門子，摩托羅拉，安川。力士樂(lè)。ACSO，橫河等進(jìn)口品牌。 專業(yè)銷售進(jìn)口DCS? PLC系統(tǒng)備件模塊
Triconex?Siemens?Yaskawa?ABB?GE?Ovation?AB?Foxboro?Motorola?Schneider?XYCOM?KUKA ? 專業(yè)銷售進(jìn)口DCS? PLC系統(tǒng)備件模塊 15天包退換 一年質(zhì)保 大量現(xiàn)貨? 國(guó)內(nèi)實(shí)力庫(kù)存商家
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PLC模塊，可編程控制器，CPU模塊，IO模塊，AI模塊，通訊模塊。AB/施耐德/ABB/GE/本特利/西屋/英維斯/霍尼韋爾/黑馬/FU克斯波羅
15天包退換 一年質(zhì)保 大量現(xiàn)貨? 國(guó)內(nèi)實(shí)力庫(kù)存商家
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