Electric control pneumatic plug door of train plug door

An electrically controlled pneumatic plug door is composed of chassis, door leaf, drive, operation, door lock, electric control and other parts. The cylinder in the drive part is connected with the door leaf, trolley and pedal through a linkage mechanism, the door leaf is hung on the roller of the trolley, the fork in the door lock part is connected with the internal and external control devices through a steel wire rope, and the electromagnetic valve in the electric control part is connected with the cylinder in the drive part, the cylinder in the door lock part and the internal and external control devices in the control part through a circuit and an air circuit system. It is convenient, labor-saving and safe to open and close the doors, which can prevent the doors from squeezing passengers, and also realize the centralized control and individual control of the doors of the whole train, so that the doors of each car can be automatically opened and closed.

The electrically controlled pneumatic plug door has three locks: isolation lock, door opening (also called internal operation) and emergency unlocking. Usually, these locks can only be opened with a special triangular handle key or hexagonal handle key for railway, but the conventional straight handle key cannot be opened. Open operation: first open the isolation lock. After the isolation lock is opened, screw the internal operation or external operation. After hearing three beeps, the door will open automatically. In the closing operation, the internal operation is firstly reversed and the isolation lock is locked until the door is completely closed. Only in this way can you leave this door. When there is no gas or electricity and the vehicle speed exceeds 5 kilometers, you can only open the door by starting the emergency unlock, and then turn the emergency unlock to the unlock position. After hearing the alarm, the door has popped out of the lock and can be opened manually. But there will always be an alarm at this time unless the emergency lock is reset. Up to now, the models of trains with electronically controlled pneumatic plug doors are 25K train, 25T train and 25G train of Urumqi Railway Bureau, all of which are electronically controlled pneumatic plug doors.