Pivoting Handrail Bracket for Ramp Grade Alignment
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Solution Overview
Problem
Modular ramp and platform assemblies face challenges in achieving parallel alignment between handrails and decking systems due to varying grades, leading to aesthetic issues and potential snag hazards, especially when the rise to run ratio exceeds 1:12, requiring adjustable solutions to comply with ADA standards.
Innovation Solution
The introduction of a pivoting handrail bracket with a first portion for coupling to handrail posts and an adjustably coupled second portion for supporting the handrail, allowing for alignment with the decking system's grade, and the use of extruded aluminum for reduced weight and manufacturing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed handrail bracket is used, then the manufacturing cost is reduced, but the handrail cannot be aligned with varying decking grades, causing aesthetic issues and potential snag hazards
Solution Approach 1:
The handrail bracket incorporates a pivoting mechanism that allows the second portion to rotate relative to the first portion, enabling dynamic adjustment of the handrail angle to match various decking grades. This dynamic capability resolves the contradiction by providing adaptability without requiring multiple different bracket designs.
Solution Approach 2:
The bracket allows change in the angular parameter of the handrail relative to the decking surface. By enabling the handrail to pivot through different angles, the system can adapt to various grade parameters of the decking, solving the alignment problem while maintaining a single standardized bracket design.
2Reliability
If a pivoting handrail bracket is used to achieve proper alignment, then aesthetic issues and snag hazards are prevented, but the device complexity increases
Solution Approach 1:
The bracket is divided into two distinct portions: a first portion that attaches to the handrail post and a second portion that supports the handrail. This segmentation allows each portion to be optimized independently while connected through a simple pivoting interface, reducing overall complexity while maintaining reliability.
Solution Approach 2:
The pivoting connection acts as an intermediary mechanism between the fixed first portion and the supportive second portion. This intermediary element enables reliable alignment adjustment without requiring complex mechanisms, as it simply allows rotational movement while maintaining structural integrity.
3Ease of manufacture
If extruded aluminum is used for the bracket, then manufacturing and assembly costs are reduced, but the structural strength may be compromised
Solution Approach 1:
The bracket utilizes extruded aluminum, which can be considered a composite material solution combining aluminum alloy properties with extruded structural geometry. This provides both ease of manufacture through extrusion processes and adequate structural strength for the application, resolving the contradiction between manufacturing ease and strength.
Solution Approach 2:
The extruded aluminum bracket is designed with varying cross-sectional geometries along its length, providing localized strength where needed while maintaining overall lightweight construction. This local quality optimization allows the use of aluminum throughout the bracket without compromising critical strength areas, balancing manufacturability and structural requirements.
Data Source
AI summary
A handrail bracket for coupling a handrail to a portion of a ramp and/or platform assembly includes a first portion for coupling to a handrail system, and a second portion for supporting the handrail, the second portion being adjustably coupled to the first portion. A ramp and/or platform assembly includes a handrail system coupled to the decking system at an interface, wherein the handrail system includes a pivoting bracket for adjustable handrail alignment to substantially align a handrail with the grade of the decking system.