Corrugated Bellows for Piling Noise Reduction
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Solution Overview
Problem
Piling operations generate significant noise emissions, and existing solutions, such as encasing driven piles with bellows, only provide limited noise reduction.
Innovation Solution
Designing a corrugated bellows with a wavy cross-section and inward curvature to enhance sound absorption, which is connected by sewing or gluing, and integrating reinforcement coated with elastomer for increased stability and ease of manufacturing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If standard bellows are used to encase the driven pile, then noise emissions are reduced to some extent, but the noise reduction effect is limited and not significant enough
Solution Approach 1:
The patent applies curvature by designing the bellows with a corrugated cross-section featuring inwardly curved wave-shaped elements. This curvature modification transforms the standard bellows structure into a corrugated bellows that achieves significantly higher sound absorption (around 4 dB improvement), directly resolving the contradiction between limited noise reduction and enhanced sound absorption capability.
2Ease of manufacture
If corrugated elements are connected by sewing and/or gluing, then manufacturing simplicity is improved, but structural stability and resistance to buckling may be compromised
Solution Approach 1:
The patent employs flexible reinforcement elements coated with elastomer that are integrated into the corrugated bellows structure. These flexible reinforcements maintain the bellows' ability to deform during piling operations while providing enhanced structural stability and resistance to buckling, thus resolving the contradiction between manufacturing simplicity and structural stability.
Solution Approach 2:
The patent uses composite construction by combining reinforcement materials coated with elastomer with the corrugated bellows structure. This composite approach creates a unified structure that is both easy to manufacture through sewing and/or gluing connections and sufficiently stable to resist buckling under operational loads.
3Object-affected harmful factors
If the wave-shaped elements are curved towards the inside of the bellows, then sound absorption is significantly enhanced (around 4 dB improvement), but the manufacturing complexity increases
Solution Approach 1:
The patent implements inwardly curved corrugations in the bellows cross-section, which creates the superior sound absorption performance (around 4 dB improvement). The curvature is integrated into the manufacturing process through predefined semi-circular tracks, balancing the enhanced acoustic performance with manageable manufacturing complexity.
Solution Approach 2:
The patent divides the annular element with wavy cross-section into at least two ring segments that are connected together. This segmentation simplifies the manufacturing of complex curved shapes by allowing each segment to be formed separately using semi-circular tracks, then assembled through sewing and/or gluing, thus reducing overall manufacturing complexity while maintaining the sound absorption benefits.
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 corrugated bellows achieves a significant sound absorption difference of around 4 dB compared to standard bellows, effectively reducing noise emissions during piling operations while maintaining structural stability.
Implementation Method 1
the bellows is designed as a corrugated bellows... ensure significantly higher sound absorption... achieves a sound absorption difference of around 4 dB between a bellows and a corrugated bellows
Implementation Method 2
the corrugated element has at least one reinforcement coated with an elastomer
Data Source
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AI summary
The invention relates to a bellows for reducing the sound emission of a sound-emitting device, comprising a tool and a workpiece, wherein the workpiece is machined by the tool, wherein the bellows can be arranged on the tool and/or the workpiece, wherein the bellows at least substantially surrounds the sound-emitting area of the tool and workpiece, wherein the bellows is designed as a corrugated bellows (20).