Swivel Anchor Point with Visual Stress Detection
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Solution Overview
Problem
Conventional swivel anchor points lack a reliable method for visual inspection to determine if they have withstood the stress of accidental falls, leading to safety concerns due to accumulated fatigue and reduced reliability, especially when handling heavy loads.
Innovation Solution
A swivel anchor point design featuring a detection structure within the brake ring and main member, utilizing first and second shafts as swing fulcrums to visually indicate displacement changes when subjected to stress, allowing for judgment on selection or replacement, and a detachable bearing system for varying expansion screw diameters to enhance elasticity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the swivel anchor point is used to support fall arrester for high-altitude construction, then it provides safety protection, but it accumulates fatigue from accidental falls and its reliability is reduced
Solution Approach 1:
The detection structure provides preliminary warning before the swivel anchor point fails completely. By detecting stress accumulation and deformation early through the visual indication mechanism, users can replace the anchor point proactively before fatigue leads to catastrophic failure, thus maintaining reliability throughout the service life.
Solution Approach 2:
The detection structure creates a feedback mechanism that visually indicates the stress history and current state of the swivel anchor point. The detection member's position changes provide continuous feedback about whether the anchor point has withstood fall stresses, enabling users to make informed decisions about continued use or replacement.
2Loss of information
If the conventional swivel anchor point is used without visual inspection capability, then it maintains simple structure, but construction personnel cannot determine whether it has withstood falling stress
Solution Approach 1:
The detection structure utilizes visual indication through color or position changes of the detection member to communicate stress history information. This allows construction personnel to quickly assess whether the swivel anchor point has withstood fall stresses without requiring complex instrumentation or technical expertise, effectively reducing information loss while adding minimal complexity.
Solution Approach 2:
The detection structure is designed to automatically indicate stress history without requiring external inspection equipment or complex mechanisms. The detection member's position or color change self-communicates whether the anchor point has experienced fall stresses, eliminating the need for specialized inspection tools or procedures.
3Adaptability or versatility
If the bearing is fixed to specific expansion screw diameter, then it ensures precise fit, but it reduces adaptability to different building conditions
Solution Approach 1:
The bearing is designed with a universal interface that can accommodate multiple expansion screw diameters. By incorporating adjustment mechanisms or multiple mounting configurations, the same bearing can be adapted to work with different screw sizes while maintaining secure attachment and rotational functionality, thus achieving both versatility and adequate precision.
Solution Approach 2:
The bearing mounting system incorporates dynamic adjustment capabilities that allow it to adapt to different expansion screw diameters. Rather than being fixed to a single diameter, the mounting mechanism can be adjusted or reconfigured to match various screw sizes, providing both adaptability and precise fit through adjustable positioning.
Data Source
AI summary
The invention is composed of a main member, a bearing, a brake ring and a detection structure. The main member has a middle hole for installing the bearing, a first pivot portion supporting a first shaft, and a second pivot portion supporting a second shaft. The first and second shafts are arranged coaxially and perpendicular to the middle hole. The brake ring has a brake hole, a first arm coupled with the first shaft, a second arm coupled with the second shaft. The detection structure is to keep the brake ring at the first position, so that the brake ring is allowed to rotate around the bearing with the first and second shaft. However, when the brake ring is subjected to a set stress to control the displacement of the brake ring to the second position. Therefore, the displacement change of the brake ring can be visually detected.