1、搖臂鉆床搖臂不能上升
常見故障為SQ2安裝位置不當或位置移動,這樣搖臂雖然已經松開但是活塞桿仍然壓不上SQ2,致使搖臂不能移動。有時也會出現因液壓系統發生故障,使搖臂沒有完全松開活塞桿壓不上SQ2,為此應配合機械液壓系統調整好SQ2位置并安裝牢固,有時電動機M3電源相序接反,此時按下搖臂上升按鈕SB3時,電動機M3反轉使搖臂夾緊更壓不上SQ2,搖臂也不會上升。所以安裝完畢后,要認真檢查搖臂鉆床電(dian)源(yuan)相序(xu)及電(dian)動機正反轉是否(fou)正確。
2、搖臂鉆床搖臂移動后夾不緊
搖(yao)(yao)臂(bei)(bei)(bei)鉆(zhan)床搖(yao)(yao)臂(bei)(bei)(bei)夾(jia)(jia)緊動(dong)(dong)作的結束是(shi)由(you)(you)行程開(kai)關SQ3來控(kong)制(zhi)的。若搖(yao)(yao)臂(bei)(bei)(bei)夾(jia)(jia)不緊說明搖(yao)(yao)臂(bei)(bei)(bei)控(kong)制(zhi)電(dian)路的動(dong)(dong)作只(zhi)是(shi)夾(jia)(jia)緊力不夠,只(zhi)是(shi)因為SQ3動(dong)(dong)作過早使液壓泵電(dian)動(dong)(dong)機M3在(zai)搖(yao)(yao)臂(bei)(bei)(bei)還未充(chong)分夾(jia)(jia)緊時就停止旋轉,這往往是(shi)由(you)(you)于(yu)SQ3安裝位置不當或松動(dong)(dong)移(yi)位,過早地被活塞壓上動(dong)(dong)作所(suo)致。
3、液壓系統故障
有時電(dian)氣控(kong)制(zhi)系(xi)統(tong)正常(chang),而電(dian)磁閥芯被卡住油路堵塞造(zao)成液壓控(kong)制(zhi)系(xi)統(tong)失靈也造(zao)成搖臂無法移(yi)動(dong)。在(zai)維(wei)修時應正確判斷(duan)是電(dian)氣控(kong)制(zhi)系(xi)統(tong)還是液壓系(xi)統(tong)故障,然(ran)而,這兩者又有聯(lian)系(xi),為此應相互配合共同排除故障。