Anti-twist Runner for Fall Arrest Guide Rail
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Solution Overview
Problem
Existing safety systems for preventing falls in high-rise structures, such as ladders, often have structurally complex anti-twist devices that complicate correct alignment and attachment of the runner to the guide element, increasing the risk of incorrect installation and reduced safety.
Innovation Solution
A structurally simple anti-twist device is implemented using a securing element with angled limbs that automatically prevents incorrect alignment by colliding with the guide element, combined with a redundant locking mechanism to ensure secure attachment in one orientation, enhancing handling safety and preventing wrong orientation attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a complex anti-twist device with multiple blocking elements is used, then the runner can be prevented from incorrect alignment, but the device complexity increases and handling becomes more difficult
Solution Approach 1:
The patent extracts the anti-twist function from a complex multi-element blocking system and implements it through a single securing element with angled limbs that naturally prevents rotation through its geometry alone, simplifying the overall device structure while maintaining reliability
Solution Approach 2:
The securing element employs asymmetric angled limbs that create a geometric constraint allowing movement in only the correct orientation, using the asymmetry of the angles themselves rather than multiple symmetric blocking elements to achieve the anti-twist effect
2Reliability
If multiple independent release mechanisms are provided for actuating brake bodies, then the braking function is more reliable, but the device complexity increases
Solution Approach 1:
The patent merges the functions of multiple independent release mechanisms into a single integrated actuating lever system that pivots to simultaneously engage or disengage both brake bodies, reducing the number of separate mechanisms while maintaining the reliability of dual-brake actuation
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 provides a safer and easier-to-handle safety system by ensuring the runner can only be correctly attached to the guide element, reducing the risk of incorrect alignment and enhancing overall safety through a redundant anti-twist mechanism.
Implementation Method 1
a securing element which can be moved between a release position and a securing position, wherein in the securing position this prevents the runner from being attached to the guide element by colliding with the guide element
Implementation Method 2
a brake body which can be moved by means of an actuating mechanism from a release position, in which the runner can be moved along the guide element, into a braking position, in which the brake body is actuated by a (force- and/or form-fitting) contact with the guide element prevents or brakes a relative movement between the runner and the guide element
Data Source
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AI summary
The invention relates to a traveller (1) for a safety system comprising a guide element, said traveller having a housing (2) which guides the guide element, a brake body (13) and a stop element for securing a safety element connected to the person to be secured. The brake body can be moved by means of an actuating lever from a release position, in which the traveller can be moved along the guide element, into a locking position, in which the brake body prevents or decelerates a relative movement between the traveller and the guide element in a blocking direction by being in contact with the guide element. The traveller also comprises a safety device which allows the traveller to be secured to the guide element in only one orientation, a safety element (36) being provided which can be moved between a release position and a safety position and which in said safety position prevents the traveller from being secured, by colliding with the guide element.