電(dian)動(dong)葫蘆故障原(yuan)因：

1、移(yi)動(dong)軟電纜(lan)折斷： 其(qi)原因是(shi)電纜(lan)在多次循環(huan)受力和較高(gao)溫度下疲勞(lao)老化。

2、控(kong)制(zhi)電纜斷線：由于控(kong)制(zhi)電纜長,電動(dong)葫蘆移動(dong)距(ju)離大, 在操作人員的扯拽下(xia)經常造成斷線和接線松(song)脫(tuo)。

3、接(jie)觸(chu)(chu)器(qi)(qi)觸(chu)(chu)頭(tou)燒(shao)壞：對于反復短時(shi)(shi)工作制的電(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)機,其等效發(fa)熱(re)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)太(tai)大(da),此外在轉換(huan)過(guo)(guo)程中,換(huan)相(xiang)過(guo)(guo)快, 接(jie)觸(chu)(chu)器(qi)(qi)的電(dian)(dian)(dian)(dian)(dian)(dian)弧續(xu)流(liu)(liu)也易造成(cheng)相(xiang)間短路而燒(shao)壞接(jie)觸(chu)(chu)器(qi)(qi)觸(chu)(chu)頭(tou)。 而一般(ban)電(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)機,工作電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)小于額定電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu), 起(qi)動(dong)(dong)(dong)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)雖然為額定電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)的4—7 倍(bei), 但(dan)是(shi)畢竟時(shi)(shi)間很(hen)短,對觸(chu)(chu)頭(tou)的損傷不大(da),接(jie)觸(chu)(chu)器(qi)(qi)在設計時(shi)(shi)只(zhi)要觸(chu)(chu)頭(tou)容量大(da)于電(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)機的額定電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)1.25 倍(bei)即可。但(dan)電(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)葫蘆(lu)電(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)機是(shi)一種特殊工作狀態的電(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)機,重(zhong)載起(qi)停頻(pin)繁,反接(jie)制動(dong)(dong)(dong),散(san)熱(re)不良(liang)等。所以在選(xuan)用電(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)葫蘆(lu)接(jie)觸(chu)(chu)器(qi)(qi)時(shi)(shi),按一般(ban)電(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)機設計,不符(fu)合電(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)葫蘆(lu)的實際(ji)工作特點,接(jie)觸(chu)(chu)器(qi)(qi)燒(shao)壞是(shi)必然的結果(guo)。

4、原限位器(qi)是利用電(dian)動(dong)(dong)葫蘆的排(pai)繩(sheng)(sheng)(sheng)器(qi)的位移(yi)來推動(dong)(dong), 由于鋼絲繩(sheng)(sheng)(sheng)比較長(chang)(起升(sheng)高度為25 米) ,并(bing)且到(dao)達較高工作面鉤(gou)頭距電(dian)葫蘆僅有1 米距離,排(pai)繩(sheng)(sheng)(sheng)器(qi)經常(chang)發(fa)生機械卡澀,使(shi)限位開關(guan)失(shi)靈。

5、電(dian)控箱(xiang)安裝在(zai)電(dian)葫蘆(lu)上,機械(xie)產生的振動,和(he)接觸(chu)器的頻繁動作,造(zao)成接線松脫。 出現故障后(hou)又很難(nan)將電(dian)動葫蘆(lu)移回(hui)檢修(xiu)(xiu)平臺(tai), 給(gei)檢修(xiu)(xiu)帶來很大的不便。