我矿主竖井井口安全门,原设计为折迭式气动安全门,门扇开启和关闭动作时快时慢,很不稳定。曾因门扇突然下落而发生过伤人事故。针对这个问题,我们学习了烽烽矿务局某矿的经验,结合我矿的具体情况,自行设计,制造了凸轮式安全门,安装完投入生产至今已经一年多了,效果良好。它的主要优点是:构造比较简单,无需专门动力,门扇的滑动比较平稳,不易 My mine shaft shaft wellhead safety door, the original design for the folding pneumatic safety door, door opening and closing fast and slow movements, it is unstable. Have a wound accident because of the sudden fall of the door leaf. In response to this problem, we learned from the experience of a mine in Fengfeng Mining Bureau and designed and manufactured the cam safety door by combining with the specific conditions of mine. It has been put into production for more than one year since it was installed, and the effect is good. Its main advantage is: the structure is relatively simple, without special power, the sliding door is relatively stable, not easy