Fall Protection Device Corner Engagement Mechanism
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Solution Overview
Problem
Existing fall protection devices for small roofs, such as those on garages or sheds, face challenges due to limited space, requiring complex anchor points that are labor-intensive and damage the building, and often lack practical implementation despite being mandatory for safety.
Innovation Solution
A fall protection device with a toppling prevention mechanism that uses transversely extending arms to engage around building corners, eliminating the need for wall anchoring by distributing tension loads, allowing for a lighter and more versatile design that can be easily assembled and disassembled by a single worker.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If anchor points are arranged in the outside wall to attach the safety rail, then the fall protection device can be securely attached to the building, but a large number of anchor points are required which is labor-intensive and leaves holes in the wall after removal
Solution Approach 1:
The invention extracts the anchoring function from the wall by using the roof edge itself as the attachment point. The upright engages with the roof edge through a hook or clamp mechanism, eliminating the need for anchor points in the wall entirely. This resolves the contradiction by maintaining secure attachment while avoiding the labor-intensive installation and wall damage associated with multiple anchor points.
Solution Approach 2:
The roof edge serves multiple functions: it provides the attachment point for the upright, acts as a structural support element, and eliminates the need for separate anchoring systems. By utilizing the existing roof edge structure for multiple purposes, the invention reduces installation complexity while maintaining attachment security.
2Reliability
If safety rails are arranged close to the roof edge on larger roofs, then fall protection is effective, but the space necessary therefor is lacking on small roofs
Solution Approach 1:
The invention moves the fall protection system from a horizontal arrangement (rails on the roof surface) to a vertical arrangement (uprights engaging the roof edge). The toppling prevention device extends vertically downward from the upright to engage the roof edge, allowing the system to function in the vertical dimension rather than requiring horizontal roof space. This resolves the contradiction by providing effective fall protection without consuming valuable roof area.
3Ease of manufacture
If the upright is designed to engage around a corner of the building, then toppling is prevented without anchoring to the wall, but the toppling prevention device must be able to withstand tension loads
Solution Approach 1:
The toppling prevention device uses a curved or arc-shaped structure that wraps around the corner of the building. This curved geometry naturally distributes tension loads along the arc, reducing stress concentration at any single point. The curved design allows the device to engage the corner effectively while maintaining the required tension load capacity without excessive material usage.
4Adaptability or versatility
If the fall protection device is made transportable on the roof of a car or in a trailer, then mobility is improved, but the device must be compact and easily assembled by one worker
Solution Approach 1:
The fall protection device is divided into modular segments: the upright, the toppling prevention device, and the fall protection mechanism can be separated into discrete components. These segments can be individually transported and easily assembled by one worker on-site. The modular design reduces assembly complexity while maintaining transportability, as each segment can be compactly packaged for transport on a car roof or in a trailer.
Data Source
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AI summary
The present invention relates to a fall protection device for safeguarding a worker during operations on a roof of a building, comprising: - at least one elongate upright which extends upward in a position of use to a level higher than the roof, and to which a lifeline is to be arranged; - a toppling prevention device which extends from the upright substantially transversely thereof; and - wherein the toppling prevention device extending transversely from the upright is configured to engage around a corner of the building. The toppling prevention device extending transversely from the upright preferably has at least one, and still more preferably at least two arms extending transversely from the upright.