U-Shaped Brake Element for Linear Impact Energy Absorption
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Solution Overview
Problem
Existing energy absorption devices for safety nets and rope constructions face challenges in achieving cost efficiency, compact construction without eccentricity, and optimal braking behavior, particularly in managing impact energy effectively without force peaks.
Innovation Solution
An energy absorption device with a brake unit comprising a deflection element and a brake element configured for kinetic energy absorption, featuring a U-shaped design with a ribbon-shaped brake element that converts impact energy into deformation energy, and a connection unit for fixation, allowing for a compact and efficient energy absorption with controlled braking behavior.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a brake element is designed to absorb impact energy effectively, then energy absorption capability is improved, but force peaks occur during the braking process
Solution Approach 1:
The brake element is designed with variable cross-sectional dimensions along its length, creating different stiffness zones. The first section has a smaller cross-section for higher flexibility to absorb initial impact, while the second section has a larger cross-section for structural stability. This dynamic stiffness distribution allows continuous energy absorption without generating force peaks.
Solution Approach 2:
The patent changes the geometric parameters of the brake element by varying the cross-sectional dimensions (width and/or thickness) along its length. This parameter variation creates a progressive deformation characteristic where the element yields in a controlled manner, converting impact energy into deformation energy continuously without force peaks.
2Adaptability or versatility
If multiple separate components are used for brake unit and connection unit, then functionality is improved, but device complexity and cost increase
Solution Approach 1:
The brake element and connection element are merged into a single integrated component. The connection element forms part of the brake element structure, eliminating the need for separate connection components. This integration reduces the total number of parts, simplifies assembly, and lowers manufacturing costs while maintaining both braking and connection functionalities.
Solution Approach 2:
The integrated brake element serves multiple functions: it provides friction braking through its interaction with the deflection element, provides structural connection to the rope or safety net, and provides energy absorption through its controlled deformation. This multi-functionality eliminates the need for separate specialized components.
3Volume of moving object
If a compact construction is achieved, then space efficiency is improved, but eccentricity in the deflection region may occur
Solution Approach 1:
The brake element is designed with an asymmetric U-shape configuration where the two legs of the U have different lengths. The first leg has a different length than the second leg, creating an asymmetric structure that maintains stability during deflection. This asymmetric design prevents eccentric loading by distributing forces evenly across the deflection element.
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 device achieves a high level of cost efficiency, compact construction, and effective energy absorption with a linear response behavior, minimizing force peaks and maintaining a constant counterforce over time, ensuring reliable energy absorption in impact scenarios.
Implementation Method 1
the brake element is pulled around the deflection element and is herein preferably deformed... configured for an at least partial absorption and/or conversion of kinetic energy... into deformation energy
Implementation Method 2
brake unit which comprises at least one deflection element and at least one brake element extending at least section-wise around the deflection element and which is configured for an at least partial absorption and/or conversion of kinetic energy
Data Source
AI summary
An energy absorption device for safety nets and/or for rope constructions, in particular an impact damping device and/or a shock damping device and/or a traction rope brake device, has a brake unit which comprises at least one deflection element and at least one brake element extending at least section-wise around the deflection element and which is configured for an at least partial absorption and/or conversion of kinetic energy in at least one load case, in particular an impact case, and has a connection unit, which is configured for a fixation of the brake unit in at least one location of use, wherein the brake element is guided around the deflection element in a U-shape,wherein the brake element includes at least one first brake portion and at least one second brake portion, the brake portions differing from one another at least in regard to their local load capacities, and the first brake portion including at least one material recess, in particular an oblong hole.