Dual-Braking Fall Locking Mechanism for Guide Member Protection
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Solution Overview
Problem
Current fall protection devices rely heavily on a single braking lever for deceleration during falls, which can lead to catastrophic failures if it malfunctions, and may cause accidental disengagement due to user error, resulting in potential damage to the guide member.
Innovation Solution
A dual-braking system is introduced, comprising a primary braking lever with a shock absorber and a secondary inertial braking feature that engages independently with the guide member, providing additional friction and safety through a curvature and grooved braking surface, and a guide wheel assembly with a thumb switch for enhanced control and engagement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single braking lever is used for fall protection, then the device complexity is reduced, but the reliability of fall protection decreases
Solution Approach 1:
The braking system is segmented into two independent components: a primary braking lever and a secondary inertial braking feature. Each component can independently engage the guide member to provide braking force, ensuring that failure of one component does not compromise overall system reliability. The segmentation allows the system to maintain functionality through distributed redundancy.
Solution Approach 2:
The secondary inertial braking feature acts as a pre-positioned backup mechanism that automatically engages if the primary braking lever fails. This prior cushioning approach ensures that protection is already in place before a failure occurs, preventing catastrophic outcomes without requiring complex monitoring or control systems.
2Object-affected harmful factors
If a single braking lever is used, then the ease of operation is improved, but the object-affected harmful factors increase
Solution Approach 1:
The secondary inertial braking feature is designed to activate automatically through inertial forces during a fall, without requiring user intervention. The center of gravity positioning and spring biasing mechanisms ensure self-activation based on motion detection, eliminating the need for complex user controls while reducing guide member damage through automatic dual-braking engagement.
3Reliability
If the braking lever is made robust to prevent failure, then the reliability is improved, but the force exerted on the guide member increases
Solution Approach 1:
The braking force is segmented and distributed between two independent braking features: the primary braking lever and the secondary inertial braking feature. Each component shares the load, allowing the use of slightly less robust individual components while maintaining overall system reliability and reducing peak forces on the guide member through distributed braking action.
Solution Approach 2:
The secondary inertial braking feature provides partial braking action that supplements the primary braking lever. By having both features engage simultaneously or sequentially, the system achieves reliable fall protection with reduced force requirements on each individual component, preventing guide member damage while maintaining robustness.
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 dual-braking system reduces the force exerted on the guide member, minimizing wear and breakage, and ensures reliable deceleration by engaging the secondary braking feature during falls, even if the primary lever fails, thereby enhancing user safety and system reliability.
Implementation Method 1
The braking lever includes a shock absorber configured to deform during a fall instance
Implementation Method 2
The secondary braking feature is an inertial structure configured to rotate into engagement with the guide member during the fall instance
Implementation Method 3
The secondary braking feature is spring biased against rotation due to gravity in an instance in which the locking system has little or no movement
Implementation Method 4
The braking surface of the secondary braking feature defines a curvature, such that the braking surface is able to grip the guide member
Implementation Method 5
The braking surface of the secondary braking feature further defines one or more grooves configured to increase the friction between the secondary braking feature and the guide member
Data Source
AI summary
A locking system for fall protection and a method of manufacturing the same are provided. An example locking system includes a housing. The housing defines a guide path through which the housing is slideably attached to a guide member. The locking system also includes a braking lever having a braking end that is configured to engage the guide member. The braking lever includes a shock absorber configured to deform during a fall instance. The locking system further includes a secondary braking feature configured independent from the braking lever. The secondary braking feature is an inertial structure configured to rotate into engagement with the guide member during the fall instance. A corresponding method of manufacturing is also provided.