The invention provides a one-way door with plane door leaves and relates to a plate-shaped one-way
revolving door capable of being opened in the
positive direction and being closed in the reverse direction. The one-way door mainly solves that problem that the gap between the secondary door and the main door of the known plate-shaped one-way door cannot completely block reverse walking of
pedestrian and the problems that one end of a folding type secondary door is directly fixed on a connecting rod, a
crank connecting rod and a folding door are hinged unstably, the folding secondary door has great
inertia during operation, and vibration and
noise cannot be overcome. The one-way door comprises three main
doors and a secondary door, wherein the three main
doors are fixed on a main shaft; the secondary door is connected with the main shaft through a
crank connecting rod mechanism; the top of the main shaft is connected with a driving gear of a speed
reducer through a key. The one-way door is characterized in that an output shaft of the speed
reducer is connected with a
pulley through the
crank connecting rod mechanism; the
pulley is mounted on a rail at the upper end of a door body; the lower part of the
pulley is connected with an arc-shaped secondary door edge of the secondary door; the other end of the secondary door is hinged with a secondary door winding drum; a torsional spring is fixed at the end part of the secondary door winding drum; the other end of the torsional spring is fixed on a torsional spring fixing shaft; the upper end of the pulley is connected with a balance belt wheel through a balance belt; the balance belt wheel is fixedly connected to a wheel shaft; one end of the wheel shaft is fixedly connected to the door body through the a balance torsional spring. In the rotating process of the main
doors, one main door and the secondary door are contacted all the time and maintain a small gap, so
pedestrian only can
walk in one way. The one-way door is reasonable and compact in structure, and has a good effect and operates stably through repeated tests.