Fire door transition equipment

The utility model discloses a fire door transition equipment, preventing fire door and passing through the device including the linkage, the transition device is provided with the transition roller including the transition support side by side on the transition support, the both sides of transition support all are provided with the supporting mechanism, install the rotor plate through the round pin axle on the supporting mechanism, install telescopic machanism on the rotor plate, and telescopic machanism is corresponding to prevent that fire door sets up in order to support or to break away from prevent fire door, be connected with the support of passing a bridge between the rotor plate of both sides, install on the support of passing a bridge with the parallel roller of passing a bridge of roller that passes through. The utility model discloses a transition device links with preventing the fire door function, condition of a fire in emergency, and automatic cutout fire district and external passageway control the calamity and further enlarge, the back is eliminated to the condition of a fire, prevents that fire door can reset fast, resumes the passageway function, uses repeatedly.