提升机停车时,要求制动系统准确可靠地抱闸,否则,就有可能过卷,甚至造成断绳坠斗。因此,抱闸得到了广泛地重视。然而,提升机的松闸,却未引起足够的注意。这主要表现在有些提升机时常发生因松闸过快而使容器冲出过卷位置,或因松闸过迟而使电机堵转过电流。还有些提升机松闸时电机稍有逆转,然后再按指令方向旋转。也有个别矿山的提升机在松闸时,因重力作用产生失控,造成紧急停车(安全制动)。所以,松闸的问题同样重要,应有措施进行控制。 Hoist parking, the brake system requires accurate and reliable brake, otherwise, there may be over-volume, or even broken wire rope. Therefore, the brake has been widely valued. However, the lift of the brake, but did not attract enough attention. This is mainly manifested in some hoisting machines often occur because of overshoot and overshoot the container out of the roll position, or because the brake is too late to stall the motor over-current. Some elevator lift motor slightly reversed, and then press the command direction. There are also individual mine hoist in the brake, due to gravity control out of control, resulting in emergency stop (safety brake). Therefore, the issue of slack gate is equally important and measures should be taken to control it.