我矿向阳坑七号坑口门安装的双扇园盘传动式电动风门,是根据该坑口门外两侧有很高的石砌墙的狭窄条件而设计的。自1972年投产以来,效果良好。结构和动作原理此风门(见图1)由电动机1通过蜗杆2与蜗轮3,小齿轮4与大齿轮5,小皮带轮 I mine pit to the pit on the 7th pitdoor installation of double-fan Park-driven electric throttle, is based on the pit outside the door on both sides of the stone wall has a very high and narrow conditions of the design. Since its commissioning in 1972, the effect has been good. Structure and action principle The damper (see Figure 1) by the motor 1 through the worm 2 and the worm gear 3, the pinion 4 and the gear 5, a small pulley