Self-standing fall arrest system
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Solution Overview
Problem
Existing fall arrest systems are cumbersome to move and require multiple people to erect, leading to worker fatigue and inefficiency in setting up temporary safety measures for workers at heights, as they often need additional space and mechanical assistance for adjustment.
Innovation Solution
A portable, self-standing fall arrest system with a four-bar linkage design and electrically actuated components that allows for quick setup and adjustment to multiple heights, using steel and aluminum components for strength and damping, and can be easily moved and assembled using a forklift or truck, with a compact design suitable for tight spaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional fall arrest systems are used, then safety function is provided, but the system is cumbersome to move and requires multiple people to erect
Solution Approach 1:
The fall arrest system is divided into modular components including a base unit with four-bar linkage, a separate anchorage system, and interchangeable support members. This segmentation allows the system to be moved and assembled in parts, reducing the physical burden on operators and simplifying the overall setup process while maintaining safety functionality.
Solution Approach 2:
The four-bar linkage mechanism employs a nested structure where the support members can be stored within the base unit when not in use. The system folds into a compact configuration that fits within its own footprint, eliminating the need for additional storage space and reducing the number of people required to handle and position the equipment.
2Area of stationary object
If traditional fall arrest systems are used, then safety function is provided, but they require additional space beyond the erected height for erection
Solution Approach 1:
The four-bar linkage mechanism inverts the traditional erection approach by folding the support members upward into a compact vertical configuration during setup, rather than extending them outward. This inversion allows the system to be erected within its own footprint, eliminating the need for additional horizontal clearance and enabling deployment in confined spaces such as indoor facilities and tight work areas.
3Speed
If traditional fall arrest systems are used, then safety function is provided, but they are difficult to move and adjust position
Solution Approach 1:
The base unit is equipped with dynamic mobility features including casters or wheels that allow the system to be easily rolled to the desired location. The four-bar linkage mechanism dynamically transitions between folded and extended configurations, enabling quick adjustment of the anchorage height and position without requiring manual disassembly or complex adjustment procedures.
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 system enables rapid and efficient deployment of a fall arrest system in various heights, reducing worker fatigue and space requirements, while providing effective shock absorption and ease of use in tight spaces, ensuring worker safety during tasks like aircraft or machinery maintenance.
Implementation Method 1
combine both steel and aluminum components for improved strength/weight ratios and to provide damping to the forces or shock received by the system in the event of a fall
Data Source
AI summary
An adjustable fall arrest system is disclosed, where the system employs a four-bar linkage and cantilevered beam arrangement to provide the fall arrest support.