Due to the lack of balance block equipment, PVC fast doors are unstable, vibrate heavily, and require high motor output power when opened or closed, making them suitable for smaller size door openings. To address the technical deficiencies mentioned above, a quick door counterweight device can make the opening and closing of PVC fast doors smoother and operate more stably and reliably.
The counterweight device for PVC fast doors includes a drum installed above the door opening, a rotating shaft is set inside the drum, and curtain fabric is wound on the rotating shaft. One end of the rotating shaft is installed on the side of the door opening through a bearing, and the other end of the rotating shaft is connected to the power output end of the motor. The motor is installed on the side above the door opening; Its feature is to set a counterweight block at the end of the rotating shaft far from the motor.
The counterweight block is installed in the longitudinal track at the end of the drum, and can be lifted and lowered along the longitudinal track. The counterweight device of the PVC fast door installs a counterweight block at one end of the drum. When the motor is working, the counterweight block moves downward or upward with the opening and closing of the curtain, making the opening and closing of the fast door more stable, smooth, and reliable.
The counterweight device of PVC fast doors has a simple structure, which can make the doors run more smoothly, reduce noise and vibration during operation, reduce the required motor power, and greatly reduce manufacturing costs. It is especially suitable for rolling shutter doors with larger door openings.