Two-Door Device through the linkage mechanism to realize the synchronous opening and closing of two doors, when a door is pushed open, linkage device will drive another door to open at the same time, to ensure that the two doors will not be open at the same time, so as to maintain the closed effect of the fire door, prevent the spread of fire and smoke.
Fire door double door can be used with fire door push rod lock. The working principle of the double door is to rely on the force of the spring to keep the door closed, when someone passes through, the door will be pushed open, and the mechanical structure in the double door will cause the other door to open at the same time. The working principle of the fire door push rod lock is that when the door is closed, the lock tongue will extend the door frame and prevent the door from opening; When an external force is applied to push the door, the locking tongue will regress, allowing the door to open. The combination of the two can improve the anti-theft performance of fire doors and the convenience of emergency evacuation.