起重機車輪組緊急開關設置原因及作用

緊急開關是為了防止操縱開關失靈、發fa生sheng緊jin急ji情qing況kuang而er設she置zhi的de。在zai緊jin急ji情qing況kuang下xia，能neng夠gou切qie斷duan起qi重zhong機ji總zong控kong製zhi電dian源yuan的de開kai關guan叫jiao緊jin急ji開kai關guan。在zai出chu現xian事shi故gu或huo緊jin急ji情qing況kuang下xia用yong來lai切qie斷duan聯lian鎖suo保bao護hu電dian路lu。因yin此ci不bu允yun許xu用yong緊jin急ji開kai關guan代dai替ti任ren何he正zheng常chang操cao縱zong和he斷duan電dian開kai關guan。緊jin急ji開kai關guan應ying設she在zai司si機ji室shi內nei便bian於yu操cao作zuo位wei置zhi。一yi般ban規gui定ding緊jin急ji開kai關guan為wei紅hong色se按an扭niu開kai關guan。