洛阳矿山机器厂生产的 JKA 型矿井提升机,分布全国各地,绝大多数已形成生产能力,担负着相当的提升任务。最近,在一些矿区陆续发现该型提升机在运转中突然出现紧急抱闸的特殊故障,已严重地影响到矿井的安全生产。本文是对这种故障进行了调查和粗浅分析,以供参考。 JKA mine Luoyang Machine Factory production mine hoist, distributed throughout the country, the overwhelming majority have formed a production capacity, shoulder a considerable upgrading tasks. Recently, in some mining areas, one after another discovered that a sudden failure of an emergency brake during operation of this type of hoisting crane has seriously affected the mine’s safety in production. This article is a survey of such failures and superficial analysis for reference.