Servomotor Removable Subassemblies for Nuclear Maintenance
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Solution Overview
Problem
Conventional servomotors in nuclear power stations are cumbersome to intervene upon, as removing the booster requires separating it from the mechanical element and accessing internal components is complex, and once removed, manual control is lost.
Innovation Solution
The servomotor is designed with removable sub-assemblies for the motor and position detection units, allowing them to be detached from the main enclosure while maintaining manual control functionality, with quick coupling and removable connectors for easy reassembly and connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the motor assembly and position detection assembly are integrated into a single enclosure with the manual control assembly, then the structural integrity and compactness are improved, but the ease of maintenance and access to components deteriorates
Solution Approach 1:
The enclosure is divided into a main enclosure containing the manual control assembly and a removable sub-assembly containing the motor assembly and position detection assembly. This segmentation allows the motor and position detection components to be accessed and maintained independently while preserving the overall structural integrity when assembled.
2Ease of repair
If the motor assembly and position detection assembly are made as removable sub-assemblies, then the ease of maintenance and component access are improved, but the device complexity increases
Solution Approach 1:
The system is segmented into modular sub-assemblies (motor assembly, position detection assembly, manual control assembly) that can be independently removed and reinstalled. This modularity simplifies maintenance operations while the standardized interface design keeps the overall device complexity manageable.
Solution Approach 2:
The removable sub-assembly design creates a universal interface that can accommodate different motor and position detection components, allowing flexibility in component selection and replacement without requiring complex custom integration for each component type.
3Volume of stationary object
If the manual control assembly is placed inside the main enclosure, then the compactness and protection are improved, but the ability to use manual control during maintenance deteriorates
Solution Approach 1:
The manual control assembly is segregated into its own main enclosure that remains stationary and accessible, while the motor and position detection components are placed in a separate removable sub-assembly. This segmentation ensures manual control remains available during maintenance of the removable components.
Solution Approach 2:
The main enclosure acts as an intermediary housing that provides a protected yet accessible environment for the manual control assembly, allowing operators to access manual control functions while the motor sub-assembly is removed for maintenance.
Data Source
Figure 1~2
Figure 3~4
AI summary
The invention relates to a servomotor (1) including a motor unit (2) suitable for generating a movement of a mechanical component, a unit (3) for detecting the position of the mechanical component, and a unit (4) for manually controlling the mechanical component, said manual control unit (4) being arranged inside a so-called main enclosure (8), said manual control unit (4) being actuated by an actuating means (7) located outside the main enclosure (8), said main enclosure (8) also being connected to the motor unit (2) and to the position-detecting unit (3), characterised in that the position-detecting unit (3) and the motor unit (2) are arranged inside enclosures (10, 11) distinct from said main enclosure (8) and removably connected thereto, such that the manual control unit (4) can be actuated when the enclosures (10, 11), in which the position-detecting unit (3) and the motor unit (2) are arranged, are separated from the main enclosure (8).