四(si)柱(zhu)液(ye)壓機液壓泵(beng)由電機拕動(dong)；快進(jin)、工(gong)進(jin)之間速度的換(huan)接(jie)通過行(xing)程(cheng)開關(guan)控製(zhi)；工(gong)進保壓(ya)時(shi)間(jian)通(tong)過(guo)時(shi)間(jian)繼電(dian)器(qi)控製(zhi)；液壓(ya)機(ji)滑塊(kuai)的(de)安全(quan)行程(cheng)範圍由(you)行程(cheng)開關限製；通過電磁換(huan)曏(xiang)閥控(kong)製(zhi)每(mei)箇工況(kuang)的(de)動(dong)作(zuo)的開(kai)始(shi)；液壓(ya)機(ji)電(dian)磁換(huan)曏閥的(de)接通通過(guo)按鈕(niu)或(huo)壓力(li)信號(hao)控(kong)製(zhi)；液(ye)壓機(ji)啟動、停(ting)止(zhi)通過(guo)按(an)鈕(niu)控製(zhi)。
