Rockfall Safety Net Structure for Uniform Impact Load Distribution
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Solution Overview
Problem
Existing safety nets for catching heavy loads, such as rocks, lack sufficient safety and stability, particularly in dynamic impact scenarios, as they often fail to distribute force uniformly and can create openings or holes upon impact, leading to further damage and reduced trapping efficiency.
Innovation Solution
A safety net design with a greater maximum overall extension in the exterior region compared to the interior region, featuring additional buffer paths and strategically arranged net elements with varying diameters, tear resistances, and material compositions to enhance catch area size, impact cushioning, and stability, while maintaining a high tensile strength and rigidity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the safety net has a uniform structure throughout, then the manufacturing is simple, but the force distribution during impact is uneven and safety is reduced
Solution Approach 1:
The patent applies local quality by differentiating the net structure into interior and exterior regions with distinct characteristics. The exterior region has a greater maximum overall extension than the interior region, creating localized variations in net element dimensions and arrangements. This allows the exterior region to provide enhanced buffer paths and force distribution specifically where edge impacts occur, while the interior maintains a more compact structure for efficient material use.
2Reliability
If the safety net uses standard net elements throughout, then the manufacturing cost is low, but the catch area reduces after impact
Solution Approach 1:
The patent implements local quality by specifying that net elements in the exterior region have different characteristics (greater maximum overall extension) compared to interior net elements. This localized differentiation ensures that the exterior region maintains its buffer capacity after impact, preventing catch area reduction, while limiting the scope of specialized elements to only where needed.
3Reliability
If the safety net has equal extension throughout, then the structure is simple, but openings form after impact allowing further objects to pass through
Solution Approach 1:
The patent applies asymmetry by creating an unequal extension pattern where the maximum overall extension in the exterior region is deliberately greater than in the interior region. This asymmetric configuration ensures that edge areas maintain sufficient net element engagement and buffer paths even after impact, preventing the formation of openings that would allow subsequent objects to pass through.
4Strength
If the safety net uses uniform net elements, then the material usage is optimized, but the force distribution is uneven causing suspension damage
Solution Approach 1:
The patent implements local quality by varying net element characteristics between interior and exterior regions. The exterior region net elements have greater maximum overall extension to provide enhanced force distribution and buffer capacity where impacts occur, while interior elements use standard dimensions. This localized optimization improves force distribution and protects the suspension system without excessive material consumption across the entire net.
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 enhanced safety net design increases the catch area size, prevents further impacts from passing through, and improves stability by distributing force uniformly, optimizing trapping characteristics and reducing damage to the suspension system.
Implementation Method 1
a force which cooperates with the safety net being able to be distributed advantageously to a large number of net elements, in addition, in particular an advantageous, in particular uniform, force distribution being able to be achieved
Data Source
AI summary
A safety net, in particular for catching heavy loads, preferably dynamic impact bodies, in particular rocks, is formed at least to a large extent by mutually engaging net elements, and a maximum overall extension of the safety net parallel to a main extension direction of the safety net is substantially greater in an exterior region of the safety net, which in particular includes at least one outermost row of net elements, than a minimum overall extension of the safety net parallel to the main extension direction in an interior region of the safety net which differs from the exterior region.