Universal Fall Arrest Ladder System with Adjustable Webbing
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Solution Overview
Problem
Existing fall arrest systems for ladders lack universal compatibility, requiring multiple systems for different ladder types and user sizes, and often fail to provide adequate protection for heavier users and varying heights, leading to safety concerns and increased costs.
Innovation Solution
A fall arrest system comprising a housing with an eye bolt, D-Ring bolt assembly, retractable lanyard, adjustable webbing belt, and industrial-grade snap lock carabiner, made from durable materials like aluminum, steel, or stainless steel, designed for universal compatibility with various ladders and users, featuring a braking system to decelerate falls and minimize user stress.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple specialized fall arrest systems are used for different ladder types and user sizes, then safety coverage is improved, but device complexity and cost increase
Solution Approach 1:
The fall arrest system is designed with universal compatibility features including an adjustable webbing belt that accommodates various user sizes, a housing that fits different ladder types, and a standardized carabiner connection system. This single system can serve multiple functions across different ladder types (extension ladders, step ladders, A-frame ladders) and user sizes, eliminating the need for multiple specialized systems while maintaining comprehensive safety coverage
2Device complexity
If a single universal fall arrest system is used for all ladder types and users, then device complexity is reduced, but adaptability to specific users and ladders decreases
Solution Approach 1:
The system incorporates dynamic adjustment mechanisms including an adjustable webbing belt with multiple positioning options to accommodate different user waist sizes, and a housing design that can adapt to various ladder configurations. The retractable lanyard mechanism dynamically adjusts to different fall distances and user weights, providing optimal protection across diverse users and ladder types without requiring multiple specialized systems
3Quantity of substance
If standard fall arrest systems are used, then cost is reduced, but protection adequacy for heavier users and varying heights is insufficient
Solution Approach 1:
The system is designed with adjustable parameters including webbing belt size adjustments for different user circumferences, retractable lanyard length adjustments for varying heights, and housing configurations for different ladder types. These parameter adjustments allow a single system to adequately protect users across a wide range of weights and heights, replacing the need for multiple specialized systems while maintaining cost efficiency
Data Source
AI summary
A fall arrest ladder system including a housing assembly having a retractable lanyard, braking system, safety line, and webbing belt is disclosed. The fall arrest system allows for the safe deceleration of the user from an elevated position on a ladder to prevent the user from making harmful contact with the ground. The safety line and retractable lanyard are each attached to a ladder and then attached to the webbing belt worn by the user, permitting the user to freely move along the length of the ladder while remaining tethered securely in the event of a slip or fall from the ladder. The safety line prevents the user from falling away from the ladder while the retractable lanyard and incorporated braking system decelerate the user during a downward fall.