Motorized Hinge Device for Heavy Pivoting Doors
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current actuators for very heavy swing doors, particularly in nuclear power plants, are difficult to install and maintain quickly due to their complexity, high cost, and large size, which restricts interchangeability and is unsuitable for the short intervention times required in hostile environments.
Innovation Solution
A motorized hinge system with a geared motor and drive mechanism that allows for quick fastening and release of the motorization block using anti-rotation blocking means, allowing the motor unit to be removably mounted and fixed to the fixed hinge part, with a drive shaft extending coaxially with the pivot axis, occupying space between the hinges for alignment and featuring a drive hub with axial locking, enabling easy maintenance and rapid interchangeability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If current actuators are used for very heavy swing doors, then the door can be actuated, but the installation and maintenance time becomes excessively long and complex
Solution Approach 1:
The actuator is divided into separate modular components: the motor unit, the transmission system with pinion and rack, and the mounting brackets. This segmentation allows each component to be independently manufactured, inspected, and replaced, significantly reducing installation and maintenance time while maintaining the overall functionality of the heavy door actuation system.
Solution Approach 2:
The actuator design incorporates adjustable and removable mounting brackets that can be quickly positioned and secured to different door configurations. The transmission system uses a rack and pinion mechanism that allows for dynamic adjustment of the actuator position along the door edge, enabling rapid adaptation to various installation scenarios without complex reconfiguration.
2Ease of operation
If current actuators are used for very heavy swing doors, then the door can be actuated, but the functional volume occupied is large making installation difficult
Solution Approach 1:
The transmission system is nested within the motor housing structure, with the pinion gear integrated into the motor shaft assembly and the rack mounted along the same structural backbone. This nesting arrangement consolidates multiple functional components into a compact linear package, reducing the overall functional volume while maintaining all necessary actuation capabilities for heavy doors.
3Ease of operation
If current actuators are used for very heavy swing doors, then the door can be actuated, but the cost becomes relatively expensive
Solution Approach 1:
The actuator design employs standardized, mass-producible components such as the motor unit, pinion gear, and rack that can be manufactured using conventional machining processes. These components are designed as replaceable units that can be quickly swapped during maintenance without requiring specialized tools or extensive disassembly, reducing both maintenance costs and downtime even though the initial manufacturing investment is moderate.
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
Motorized hinge device for very heavy swing door intended to be motorized and consisting of at least one leaf or sash (1) mounted pivoting, around a substantially vertical axis of rotation, on a frame (2), comprising a fixed hinge part (3) integral with said frame (2) and a movable hinge part (4) integral with said leaf (1) and mounted in rotation relative to said fixed hinge part (3) around a pivoting axis.The movable hinge part (4) includes a drive mechanism powered by a motorization unit (7) capable of rotating said movable hinge part (4) around its pivot axis and, consequently, of moving, by pivoting, said leaf (1) in opening or closing, said motorization unit (7), on the one hand, being mounted in a removable manner on said drive mechanism and on a fixed part (3) of said door and, on the other hand, being held in the drive position of said mechanism with anti-rotation blocking, possibly with radial play, relative to said leaf (1).