這zhe種zhong利li用yong的de是shi離li心xin力li驅qu動dong的de,當dang速su度du加jia大da,離li心xin力li加jia大da,達da到dao預yu定ding數shu據ju時shi就jiu會hui卡ka住zhu,行xing程cheng開kai關guan動dong作zuo,切qie斷duan電dian源yuan。如ru果guo電dian梯ti失shi控kong繼ji續xu滑hua動dong,則ze輪lun子zi上shang的de鋼gang絲si拉la動dong電dian梯ti轎jiao廂xiang上shang的de拉la杆gan,拉la動dong安an全quan鉗qian動dong作zuo,安an全quan鉗qian的de鍥qie塊kuai卡ka住zhu軌gui道dao ,電梯停止。