Floor-Integrated Multi-Pole Motor for Revolving Door Torque
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Solution Overview
Problem
Existing motorized revolving doors require large drive motors due to high torque needs, leading to space inefficiencies and aesthetically unfavorable ceiling constructions when installed above the turnstile.
Innovation Solution
A compact multi-pole electric motor drive is integrated into the floor of the revolving door, allowing for a low-profile installation under the floor with adjustable positioning to align with the turnstile, and a flat design to minimize ceiling height requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a large drive motor is used to provide the necessary torque for rotating the turnstile, then the driving force is sufficient, but the space requirement above or below the turnstile becomes enormous
Solution Approach 1:
The drive motor is repositioned from a vertical installation above the turnstile to a horizontal installation within the floor section. This dimensional change allows the motor to be integrated into the floor structure rather than occupying vertical space, thereby providing sufficient torque while minimizing the volume occupied above or below the turnstile.
Solution Approach 2:
The drive motor is nested within the floor section structure, specifically integrated into the receiving space formed in the floor. This nesting approach allows the motor to be housed within the existing floor construction without requiring additional external space, thus providing adequate driving force while maintaining compact overall dimensions.
2Force
If the drive motor is installed above the turnstile to provide sufficient torque, then the driving force is adequate, but the ceiling construction becomes optically unfavorable and requires high ceiling height
Solution Approach 1:
The drive motor is relocated from the vertical dimension (above the turnstile) to the horizontal dimension (within the floor section). This repositioning eliminates the need for high ceiling construction while maintaining adequate torque output, as the motor operates from a horizontal plane within the floor rather than requiring vertical clearance above the turnstile.
Solution Approach 2:
The drive motor is extracted from the ceiling construction and relocated to the floor section. This extraction removes the source of the optically unfavorable high ceiling requirement, allowing for a more aesthetically pleasing ceiling design while the motor continues to provide sufficient torque from its new location within the floor structure.
3Volume of moving object
If the drive is integrated into the floor section, then the ceiling construction is simplified and space is saved, but the drive must be precisely aligned with the turnstile which requires adjustment mechanisms
Solution Approach 1:
The adjustment device incorporates dynamic elements that allow the drive motor to be positioned and inclined at adjustable angles relative to the turnstile. This dynamic adjustability enables precise alignment to be achieved and maintained, ensuring proper operational connection while keeping the overall design space-efficient by integrating the motor within the floor section rather than requiring additional external space.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution reduces the visual impact of the drive system, enabling a more attractive and space-efficient installation without altering the building's shell, accommodating various floor types and inclinations.
Implementation Method 1
a drive motor designed as a multi-pole electric motor
Data Source
AI summary
The revolving door (100) comprises a drive (130), which is operatively connected with a hub (105,120) of the revolving door in a rotating manner, and a drive motor, which is formed as the multipolar electric motor. The axis of rotation runs parallel or coaxial to the axis of rotation of the hub.