Hinge Assembly Wind Load Resistance and Pivoting Control
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Solution Overview
Problem
Existing hinge assemblies for lighting columns lack sufficient resistance to wind loading and do not adequately prevent unwanted pivoting of the upper column section when in a horizontal position, posing structural weaknesses and safety concerns.
Innovation Solution
A hinge assembly with semi-circular cover members that pivot about a horizontal axis, providing enhanced structural support and locking mechanisms to secure the upper column section in place, featuring compressible pads and adjustable thickened bands to manage wind loads and prevent unwanted pivoting, along with a spring mechanism for controlled movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a hinge assembly is used to enable the upper column section to pivot relative to the lower column section, then access at ground level to the upper column section is achieved, but the hinge assembly presents an area of structural weakness during high wind loads
Solution Approach 1:
The hinge assembly is segmented into multiple cover members (first cover member and second cover member) that can independently pivot about horizontal axes. This segmentation allows each cover member to function as a separate structural element that can withstand wind loads while still permitting access when opened
Solution Approach 2:
The cover members are designed to pivot dynamically between a closed position (providing structural strength) and an open position (providing access). The dynamic capability allows the structure to adapt between maintaining integrity under wind load and allowing maintenance access
2Ease of operation
If the upper column section is lowered to a horizontal position for maintenance, then access is improved, but unwanted pivoting may occur without adequate securing mechanisms
Solution Approach 1:
The locking mechanism is designed to engage automatically or be easily engaged to secure the upper column section in its lowered horizontal position before maintenance begins. This preliminary securing action prevents unwanted pivoting during the maintenance operation
Solution Approach 2:
A locking mechanism acts as an intermediary element between the upper and lower column sections. This intermediary component provides the additional securing function needed to prevent unwanted pivoting while allowing the desired maintenance access
Data Source
AI summary
A hinge assembly for connecting together upper and lower separable sections of a column comprises an upper member for attachment to the lower end of an upper column section and a lower member for attachment to the upper end of a lower column section.