Motor Applications in Revolving Doors

1. Component Overview

Revolving doors are commonly used in large public buildings, office buildings, subway stations, and high-end commercial centers. They offer a combination of aesthetics, security, and energy efficiency. The main components include:

• Drive Motor: Responsible for rotating the door leaves, typically using efficient servo motors or brushless DC motors, ensuring smooth and powerful rotation output.
• Reducer: Typically uses planetary or harmonic reducers to match the motor’s output speed with the door’s rotation speed, improving torque output and reducing noise.
• Sensor System: Includes photoelectric sensors, infrared sensors, and anti-clamping devices to detect personnel entry and prevent injury.
• Control System: Uses PLCs or specialized controllers to coordinate motor startup, acceleration, deceleration, and stopping actions, ensuring smooth and safe movement of the door.
• Door Body Structure: The door leaves are usually made of aluminum alloy frames and tempered glass, providing a lightweight yet strong structure that ensures smooth operation and aesthetic appeal.

2. Working Principle

When a sensor detects someone approaching, the signal is sent to the control system, activating the drive motor. The door leaves rotate slowly and evenly, forming a convenient entryway. The drive motor, through the reducer, outputs the appropriate speed and torque, ensuring the door doesn’t collide or shake due to excessive inertia. During the passage of personnel, the sensors continuously monitor and adjust the motor speed to ensure safety. After the person has passed, the door stops automatically and locks to prevent unauthorized access. The entire process is automated for safety, improving traffic efficiency and user experience.

3. Motor Roles in the System

Revolving doors place strict requirements on the motor system. The motor must provide continuous and stable torque output to drive the heavier door leaves smoothly. It must also have a quick response time to meet safety anti-clamping functions. Additionally, the motor needs high precision in speed and position control to ensure smooth door movements and prevent shaking or collisions. The motor should operate with low noise and vibration levels to guarantee a comfortable and quiet environment. Its durability and resistance to interference are crucial, especially in environments where the door operates continuously for long periods in public places. Lastly, energy efficiency is a key evaluation criterion, as well-designed motors can significantly reduce energy consumption, improving the overall operational efficiency of the system.

4. Custom Motor Solutions

To meet the complex requirements of revolving door systems, we offer a highly integrated motor drive solution. The GPG-BL60H brushless DC motor is used, which features a compact design and excellent efficiency. It supports built-in Hall sensors for precise speed regulation and position control, fulfilling the low-speed, high-torque drive needs of revolving doors. Paired with the GPG-PL45 planetary reducer, it enhances torque output, significantly reduces noise, and minimizes mechanical wear, ensuring smooth and quiet door movements. For control, we use high-performance servo drivers that support industrial communication protocols like EtherCAT and CANopen, making it easy to integrate into various access control systems for intelligent management and remote monitoring. All equipment is rated with IP54 or higher protection, suitable for both indoor and outdoor environments. It is also dustproof and moisture-resistant to ensure long-term stability under high-frequency use. Additionally, our motor solutions emphasize energy-efficient design, optimizing motor windings and control algorithms to minimize energy consumption, extend the service life of the equipment, and enhance the overall system’s safety, reliability, and user experience.