Fast door is also known as rapid rolling doors, high-speed doors, high speed roll door, canvas, etc., is controlled by PLC, inverter, encoder (PVC material) curtain lifting fast, and accurate positioning of an industrial door and more used in food, electronics, printing, biological medicine, etc to the environment to demand higher factory workshop, the main effect is fast isolation role to ensure dust-free workshop air quality level.
Fast door is refers to the speed more than 0.6 meters per second, door, door curtain are main material for PVC fabric or aluminum profile, is quick lifting of barrier-free isolation door, main function is to heat preservation, moisture, dust, insects, sound insulation, etc., make the workshop keep constant temperature, constant humidity, clean working environment. Apply to food, medicine, electronics, rubber, chemical industry, automobile, textile, logistics and other fields.
Based on the material of PVC door curtain the fast door application mainly in the heat preservation, moisture, dust, insects, for sound insulation, heat preservation is relative, especially in heat preservation this one just can effectively prevent air convection.
Aluminum alloy profile as the base material for rapid door besides PVC door curtain for fast door should have some characteristics of the base material, also with the function of guard against theft.
[principle] rapid door by door frame system, door curtain system, drive motor, the control system, security system.
Frame system: the main material is carbon steel or aluminum alloy.
Door curtain system: is mainly composed of PVC fabric or aluminum alloy profiles.
Drive motor system: mainly by the brake pads, motor, deceleration into a unit.
Control system: is the most commonly used by PLC/frequency converter/encoder.
Safety system: mainly infrared photoelectric switch, safe air pressure sensor.
Lifting speed: 0.8 m/s to 1.5 m/s, from the floor to be in commonly 2 seconds (electric gate 20 times speed), vehicles, pedestrians don't need to wait for, does not constitute a barrier.
Open the door trigger signal has a variety of ways: manual button, radar sensor, infrared photoelectric sensor, magnetic induction, remote control, etc.
Door cloth material: general with PVC as curtain, producing area is preferred good for domestic or made in France. The thickness of 0.8 mm to 2.0 mm. Color is orange, yellow, blue, silver, transparent grid, black and so on, with orange as the first choice, the reason is orange is very eye-catching, have warning effect, also the function of certain insects.
Drive motor: rapid rolling door is braking deceleration motor, for brake quickly and has little noise.
Working process: by the door sensors provide the trigger signal to the control system, the rapid rolling door control system according to the current location issue instructions to frequency converter, the curtain rise quickly, and start driving motor traffic through the automatic door curtain drops, after close the channel, signal again until the next door open.
Rapid rolling door lifting speed is very fast, can't stop, like steel gate direct start general need the inverter to control motor speed. Rises the sooner the better, faster in place (20 cm) need to have a slow buffer stop process, in order to prevent the collision orbit, prevent clip, reduce noise, which is a measure of rapid rolling door performance good or bad.
Rapid rolling door there are two ways of positioning: mechanical positioning: this way of positioning and steel gate, advantage is speed, low demands on controller.
Rotary encoder positioning: we often take the positioning of the elevator is done with rotary encoder, this approach has the advantage of location, with a resolution of 1024 encoder, for example, 3 m high door into nearly 9000 points, theoretical accuracy can reach 0.3 mm, height setting is simple, rotary encoder itself, the price is higher, is a precision components is spoiled, and needs and PLC program, so the cost of control system on the high side.
The current position：
19952701625
