自动风帘是一种新结构的自动风门。风帘用柔性材料制成。平时横垂于巷道断面,遮断风流,当车辆来到时,自动卷绕位于其顶部的卷筒上。风帘的驱动动力为压力水。控制系统采用晶体管开关电路。现场试验表明:这种风门在结构上简单轻便,没有 Automatic air curtain is a new structure of automatic damper. Wind curtain made of flexible material. Normally perpendicular to the roadway cross-section, cut off the Merry, when the vehicle comes, automatically winding drum located at the top of its. Windscreen powered by pressure water. The control system uses transistor switching circuit. Field tests show that: This damper is simple and light in structure, no