《煤矿安全规程》(下称规程)的第381条要求:“保险闸的空动时间(由保护回路断电时起至闸瓦刚刚接触闸轮上的一段时间):闸瓦式制动闸不得超过0.5秒……”。林盛煤矿西翼北部采区盲斜井主提绞车为 JT1600/1224型,是锦州矿机厂生产的老产品,该绞车在1981年末投入使用以来,在安全制动空行程时间上始终没有达到设计要求和规程要 Article 381 of the Code of Coal Mine Safety (hereinafter referred to as the “Code”) requires: “The time for the lockout to run free (from the time when the protection circuit is de-energized until the brake shoe has just touched the gate): No more than 0.5 seconds ... ”. The main winch of blind shaft in mining area of ​​west shaft of Linsheng Coal Mine is JT1600 / 1224 type, which is an old product produced by Jinzhou Mine Machine Factory. Since the end of the winch was put into use in the end of 1981, it has not reached the safe brake-free travel time Design requirements and procedures to