diandongshoudongliangyongjiaguiqizhuyaoyongyudiandonggongzuo,tongshiyekeyitongguozhuandongshoulun,shijiaguiqishangqianjiajin。dangcaiyongdiandongjiqudongshi,diandongjidaidongjiansuzhuichilun,tongguoluogan和螺母壓縮彈簧產生夾緊力,使夾鉗不鬆弛,電氣聯鎖裝置工作,終點開關斷電,自動停止電動機運轉。該夾軌器可以在運行機構使螺母退到一定行程後,觸動終點開關,運行機構方可通電運行。在螺杆上裝有一手輪,當發生電氣故障時,可以手動上鉗和鬆鉗。
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