(1)緊急開(kāi)關(guān) (2)門(mén)艙開(kāi)關(guān) (3)大車(chē)的行程限位開(kāi)關(guān) (4)小車(chē)的行程限位開(kāi)關(guān) (5)起升機(jī)構(gòu)上升限位開(kāi)關(guān)