錐形轉子電動機的製動裝置由套在電機轉子上的製動彈簧、風feng扇shan製zhi動dong輪lun和he端duan蓋gai上shang的de製zhi動dong環huan組zu成cheng。電dian動dong機ji運yun行xing時shi，錐zhui形xing轉zhuan子zi電dian動dong機ji的de氣qi隙xi磁ci場chang產chan生sheng軸zhou向xiang磁ci拉la力li，壓ya縮suo製zhi動dong彈dan簧huang，使shi風feng扇shan製zhi動dong輪lun與yu電dian機ji端duan蓋gai上shang的de製zhi動dong環huan脫tuo開kai，電dian機ji能neng自zi由you轉zhuan動dong。斷duan電dian時shi，軸zhou向xiang磁ci拉la力li消xiao失shi
，轉zhuan子zi在zai製zhi動dong彈dan簧huang的de推tui力li下xia產chan生sheng軸zhou向xiang移yi動dong
，使shi風feng扇shan製zhi動dong輪lun壓ya緊jin製zhi動dong環huan
，產chan生sheng摩mo擦ca力li

，迫po使shi電dian機ji迅xun速su停ting轉zhuan並bing綁bang住zhu轉zhuan子zi，以yi防fang止zhi起qi吊diao的de重zhong物wu下xia落luo，保bao障zhang安an全quan。