2019/3/19
帶電(dian)腦的挖掘(excavate)機其(qi)挖掘速度(du)和挖掘力(li)的控(kong)制(control)是由(you)電(dian)腦根據外界負(fu)荷(load)變化通過比例電(dian)磁閥(magnet valve )控(kong)制先(xian)導油路,從而改變變量(Variable)泵斜盤角度(du)(angle)來實現的挖掘機修理是指(zhi)設(she)備技(ji)術(shu)狀態劣化或發(fa)生故 障后(hou),為(wei)(wei)恢復(fu)其(qi)功能而進行的技(ji)術(shu)活動(dong)(dong),包括各類計劃(hua)修(xiu)理(li)(li)和(he)計劃(hua)外的故障修(xiu)理(li)(li)及(ji)事故修(xiu)理(li)(li)。所(suo)以挖(wa)掘機(ji)(excavator)維(wei)護修(xiu)理(li)(li)認(ren)為(wei)(wei)應首先(xian)巡查(cha)先(xian)導(dao)油壓(ya),測該壓(ya)力(pressure)為(wei)(wei)3。9MPa,為(wei)(wei)正(zheng)常(chang)(normal);然后(hou)再檢查(cha)先(xian)導(dao)油路,可按(an)圖1所(suo)示方(fang)法(method)檢查(cha)比例電(dian)磁閥(fa)。用直流鉗(qian)型表(biao)(置mA檔)夾(jia)大比例電(dian)磁閥(fa)單根(gen)導(dao)線上,將模式開關(guan)(switch)置重負(fu)荷(he),啟動(dong)(dong)(start up)發(fa)動(dong)(dong)機(ji),做動(dong)(dong)作(action),鉗(qian)型表(biao)無(wu)電(dian)流指(zhi)示。