Rotating Cable Holder for Anti-Fall Running Element Tilting
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Solution Overview
Problem
Existing fall protection rope systems with horizontally arranged ropes are prone to the running element tilting when guided over a rope holder, especially when the running element is at an angular position between 90° and 180°, leading to deformation of the rope holder due to bending forces.
Innovation Solution
A reversibly rotatable rope holder with a spring element and a cable guide featuring an arc section that provides a spring effect, along with a first and second guide with different cross-sectional shapes to ensure a clearance fit and prevent incorrect angular positioning, minimizing tilting and deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the running element is arranged at an angular position between 90° and 180° with respect to the carabiner receptacle, then the running element can be guided over the cable holder, but the cable holder becomes prone to tilting and deformation due to bending forces
Solution Approach 1:
The cable holder is designed with reversible rotation capability around an offset axis, transforming it from a static component to a dynamic one. This allows the cable holder to automatically adjust its orientation during operation, accommodating the running element at various angular positions (90°-180°) while maintaining stability by rotating to optimal positions rather than resisting fixed-position bending forces
Solution Approach 2:
The rotation axis is deliberately offset from the cable holder's center of gravity, creating an asymmetric configuration. This parameter change enables the cable holder to tilt and rotate in controlled manner, converting the harmful bending forces into rotational motion that maintains structural integrity while allowing the running element to pass through at required angles
2Reliability
If the running element is guided over the cable holder at the specified angular position, then the fall protection function can be achieved, but the cable holder experiences bending forces that cause deformation
Solution Approach 1:
By enabling reversible rotation around an offset axis, the cable holder dynamically adapts to loading conditions. The running element can be guided at angular positions necessary for fall protection functionality, while the cable holder rotates to positions that minimize bending moments, preserving structural strength and preventing deformation
Solution Approach 2:
The offset rotation axis is pre-configured to counteract the bending forces that would otherwise deform the cable holder. The asymmetric design creates a natural counterbalancing effect where the rotation mechanism preemptively compensates for the harmful forces generated during normal operation at 90°-180° angles
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 solution reduces the risk of rope holder tilting and deformation by ensuring smooth sliding and proper alignment of the running element, enhancing the stability and usability of the fall protection system.
Implementation Method 1
the cable holder and/or the bracket have at least one spring element. According to the invention, any known spring element can be used that is structurally suitable.
Implementation Method 2
The curved section gives the web a spring effect and can thus provide a spring effect in addition to the reversible rotating bearing.
Data Source
Figure 1~2
Figure 3
AI summary
The invention relates to a cable holder and a running element for a cable system of an anti-fall device, wherein the cable holder is reversibly rotatably mounted and the axis of rotation of the cable holder is offset parallel to a cable.