Anchor Assembly Indicator for Fall Arrest Safety Validation
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Solution Overview
Problem
In mining and construction, workers often attach personal protective equipment to structures that may not be adequately supported, leading to overstressing and potential failure, as the attachment points are not regularly checked for fitness and lack indication of safety validation.
Innovation Solution
An anchor assembly with a fastening arrangement and an indicator that deforms upon loading, providing a visual indication of the anchor's fitness for use, including color coding for load ratings and installation time periods, ensuring the anchor can withstand predetermined loads and is securely attached to the structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If persons attach personal protective equipment to existing structures for safety, then safety coverage is improved, but the structures may become overstressed and potentially fail
Solution Approach 1:
The invention divides the safety system into separate functional components: existing structures provide only anchoring points, while dedicated anchor assemblies provide the load-bearing capacity and safety validation. This segmentation prevents overstressing of existing structures by transferring all safety-critical loads to purpose-designed anchor assemblies.
Solution Approach 2:
The anchor assembly acts as an intermediary between the existing structure and the personal protective equipment. It includes a fastening arrangement that couples to the structure and an indicator mechanism that validates the connection, thereby mediating the load transfer and providing safety assurance without requiring the existing structure to directly support safety loads.
2Ease of operation
If attachment points are used without regular safety checks, then ease of use is improved, but the fitness for purpose cannot be determined
Solution Approach 1:
The anchor assembly performs self-validation through the indicator mechanism that automatically indicates whether the anchor is fit for purpose. The indicator provides visual feedback about the safety status without requiring external inspection or complex verification procedures, enabling users to quickly assess fitness for purpose while maintaining ease of use.
Solution Approach 2:
The indicator mechanism is pre-configured to show the safety status of the anchor assembly. Before use, the indicator clearly indicates whether the anchor is fit for purpose, eliminating the need for separate safety checks and allowing users to immediately determine fitness for purpose while maintaining operational simplicity.
3Device complexity
If attachment points lack indication of safety validation, then device complexity is reduced, but safety status cannot be identified
Solution Approach 1:
The indicator uses color changes to communicate the safety status of the anchor assembly. Different colors indicate different safety conditions (e.g., green for fit for purpose, red for not fit for purpose), providing immediate and unambiguous safety status information through simple visual cues that do not add significant complexity to the attachment point structure.
Solution Approach 2:
The indicator changes its physical state or appearance parameter (such as color, position, or configuration) to communicate safety status. This parameter change provides clear information about whether the anchor is fit for purpose without requiring complex display systems or additional components, maintaining simplicity while preventing information loss.
4Reliability
If anchor assemblies include indicators for safety validation, then reliability is improved, but device complexity increases
Solution Approach 1:
The indicator mechanism is designed to automatically indicate safety status without requiring external power sources, complex electronics, or manual operation. The indicator self-activates based on the anchor assembly's state, providing reliable safety validation while minimizing the addition of complex components through self-service operation.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The anchor assembly ensures safe attachment by visually indicating when the anchor is fit for use, preventing overstressing and ensuring regular inspection and replacement, thereby enhancing worker safety and structural integrity.
Implementation Method 1
the deformable portion being adapted to be moveable relative to the body portion between an initial non-deformed condition and a deformed condition in response to loading of the fastening arrangement
Data Source
AI summary
There is disclosed an anchor assembly for coupling a tether to a structure such as a rock wall (14) in a fitted condition with a fastening arrangement having a fastener. The anchor assembly includes an anchor body having a first portion located toward a first end adapted to couple with the tether and a second portion located toward a second end. The second portion is adapted to receive the fastener in the fitted condition. The anchor assembly also includes an indicator arranged to be engagable in the fitted condition between the fastening arrangement and the anchor body. The indicator includes a body portion and a deformable portion extending from the body portion, the deformable portion being adapted to be moveable relative to the body portion between an initial non-deformed condition and a deformed condition in response to loading of the fastening arrangement.