我客运站长途大客车车门的开关,过去都是手动的,这样既不安全,旅客上下又不方便,同时开、关门又很费劲。通过司机革新,改为气动开关,这样司机可以随时控制开、关门,又安全,又方便。本开关(图1)主要由分配阀、驱动机构、锁止机构三部分组成的。压缩空气通过分配阀(图1中开门位置)进入“开门进气孔”,将活塞杆9向右推动,与 In the past, the switch of the door of the coach station in our terminal was manually operated. It was neither safe nor easy for passengers to get on and off. At the same time, opening and closing the door was laborious. Through the driver innovation, replaced by pneumatic switch, so drivers can control open, close, safe, convenient. The switch (Figure 1) mainly by the distribution valve, drive mechanism, locking mechanism composed of three parts. Compressed air through the distribution valve (Figure 1, open the door position) into the “door into the vent”, the piston rod 9 to the right, and