High-Pressure Hose Reinforcement Layout for Pressure and Flexibility
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Solution Overview
Problem
High-pressure hoses face a challenge in achieving both high pressure resistance and flexibility, as reinforcement layers increase repulsive force when bent, necessitating a reduction in the change of repulsive force during bending.
Innovation Solution
A high-pressure hose design featuring internal and external rubber layers with even-numbered reinforcement layers wound in a spiral pattern, where the winding angle and pitch of reinforcement wires remain constant across layers, and intermediate rubber layers are included to manage deformation during bending, reducing the change in repulsive force.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If reinforcement layers are added to increase pressure resistance, then pressure resistance performance is improved, but repulsive force increases when the hose is bent, reducing flexibility
Solution Approach 1:
The patent applies parameter changes by setting the winding pitch of reinforcement wires to increase from the inner side toward the outer side of the hose, while maintaining a constant winding angle. This gradual increase in winding pitch allows the reinforcement structure to adapt to bending deformation, reducing repulsive force during bending while maintaining pressure resistance when straight
Solution Approach 2:
The patent uses composite material structure by combining multiple reinforcement layers with different winding pitches within the same hose wall. Each layer has optimized winding pitch parameters, creating a composite reinforcement system that simultaneously provides pressure resistance and flexibility through the coordinated deformation characteristics of different layers
2Ease of operation
If reinforcement layers with varying winding angles are used to improve flexibility, then ease of operation is improved, but pressure resistance performance deteriorates
Solution Approach 1:
The patent maintains a constant winding angle parameter across all reinforcement layers while varying only the winding pitch. This approach preserves the pressure resistance function (which depends on winding angle for circumferential strength) while allowing flexibility improvement through pitch variation that accommodates bending deformation
3Ease of operation
If the winding pitch of reinforcement wires is increased from inner to outer layers, then flexibility is improved by reducing repulsive force change during bending, but manufacturing precision requirements increase
Solution Approach 1:
The patent applies preliminary action by pre-calculating and pre-setting the gradient of winding pitch values during the design and manufacturing phase. The winding pitch is intentionally programmed to increase from inner to outer layers according to a predetermined gradient, so that when the hose bends, the reinforcement structure is already configured to accommodate the deformation, reducing repulsive force before bending occurs
Data Source
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AI summary
A high-pressure hose (1) with excellent pressure resistance performance and high flexibility includes: an internal rubber layer (10); an external rubber layer (20); reinforcement layers (41 to 44) having even number of layers, two or more of the reinforcement layers are provided between the internal rubber layer (10) and the external rubber layer (20), a plurality of reinforcement wires (41a to 44a) are wound around the reinforcement layers in a spiral shape such that winding directions of the reinforcement wires (41a to 44a) alternate; and intermediate rubber layers (51 to 54), each of which is disposed between the reinforcement layers (41 to 44) having even number of layers. A same winding angle (α) is set for the reinforcement wires (41a to 44a) in all levels of the reinforcement layers (41 to 44) having even number of layers, and a winding pitch (P) of the reinforcement wires (41a to 44a) in the reinforcement layers (41 to 44) having even number of layers is set to increase in an order from a side of the internal rubber layer (10) to a side of the external rubber layer (20).