Guide Structure for Vertical Control Cabinet Movement in HV Circuit Breakers
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Solution Overview
Problem
Conventional high voltage dead tank circuit breakers require disassembly and reconnection of the control cabinet and wiring to adjust the shipping position, increasing shipping costs and time due to the need for disconnection of wire connections.
Innovation Solution
A guide structure and method for moving a control cabinet between installation and travel positions using a support frame, pole and actuating members, and guide rails that allow vertical movement without disconnecting wire connections, enabling the cabinet to be raised or lowered while maintaining connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the control cabinet is positioned below the pole assemblies for easy servicing access, then ease of operation is improved, but shipping height increases and disassembly is required
Solution Approach 1:
The control cabinet is designed to be movable relative to the pole assemblies through guide structure and rollers, transitioning from a static below-position to a dynamic adjustable position. This allows the cabinet to be raised to the shipping position without disassembly, reducing shipping height while maintaining easy servicing access during installation.
2Length of stationary object
If the control cabinet is disconnected from pole assemblies for shipping, then shipping height is reduced, but disassembly and reassembly time increases
Solution Approach 1:
The system is segmented into the control cabinet and pole assemblies as separate but connectable components. The guide structure and rollers enable the cabinet to be independently positioned without disconnecting wiring or mechanical linkages, eliminating disassembly time while maintaining the ability to reduce shipping height.
3Length of stationary object
If wire connections are disconnected for cabinet repositioning, then shipping height is reduced, but shipping cost increases
Solution Approach 1:
The control cabinet transitions from a fixed position to a dynamically adjustable position using guide structure and rollers. This dynamic positioning system allows the cabinet to be raised to reduce shipping height without disconnecting any wire connections, thereby eliminating additional labor costs associated with reconnection.
4Reliability
If the control cabinet remains connected to pole assemblies, then wiring connections are maintained, but cabinet movement is restricted
Solution Approach 1:
The system separates the control cabinet from the pole assemblies while maintaining electrical connections through the guide structure and rollers. This segmentation allows independent movement of the cabinet for positioning changes without breaking wiring connections, achieving both connection reliability and position flexibility.
Solution Approach 2:
The guide structure and rollers act as intermediaries between the control cabinet and pole assemblies, enabling vertical movement and position adjustment while maintaining continuous wiring connections. This intermediary mechanism resolves the conflict between connection continuity and position flexibility.
Data Source
AI summary
A pole and actuating assembly for a circuit breaker includes a support frame, a plurality of pole and actuating members carried on the support frame, cabinet movably coupled with respect to the support frame, and guide structure between the support frame and the cabinet. The guide structure is constructed and arranged to permit guided, generally vertical movement of the cabinet with respect to the support frame so that the cabinet can be moved between an installation position wherein a bottom surface of the cabinet is on a plane different from a plane of the support frame, and a travel position wherein the bottom surface of the cabinet is on generally the same plane as the support frame.