Hexagonal Wire Netting Structure for High-Strength Slope Protection
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Solution Overview
Problem
Existing wire netting solutions for protecting slopes and embankments have low tensile strength and tend to unbraid when an individual wire breaks, limiting their effectiveness under significant loads, and existing manufacturing machines are not suitable for producing hexagonal netting with high carbon steel wires of higher tensile strength.
Innovation Solution
A hexagonal wire netting made of high carbon steel wires with a tensile strength range of 1500-1900 MPa, braided in at least 1.5 folds to form meshes with a width-to-length ratio less than 0.75, and a manufacturing device with straightening guides and detent elements on the drum to prevent unbraiding and accommodate high-strength wires.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If high carbon steel wires with high tensile strength are used, then the tensile strength of the wire netting is improved, but the wires become more brittle and break during the braiding process in existing machines
Solution Approach 1:
The patent applies preliminary action by pre-twisting the high carbon steel wires into spiral shapes before they enter the braiding spindles. This pre-twisting prepares the brittle high-strength wires for the braiding process by giving them initial curvature, which prevents them from breaking when they need to bend during braiding. The spiral pre-forming is done in a separate step before the wires are fed to the spindles for netting formation.
Solution Approach 2:
The patent changes the physical parameters of the wire netting by creating meshes with a specific width-to-length ratio of less than 0.75. This geometric parameter change, combined with using high carbon steel wires (0.6-1.0% carbon content) having tensile strength of 1500-1900 MPa, transforms the netting into a structure that can withstand high loads while maintaining flexibility through the braided construction.
2Strength
If the wire netting is made of high tensile strength wires, then the resistance to breaking is improved, but the netting structure becomes more prone to unbraiding when an individual wire breaks
Solution Approach 1:
The patent applies segmentation by dividing the netting structure into multiple interwoven wire elements that are braided together. When one wire breaks, the load is distributed to adjacent wires through the braided configuration, preventing catastrophic failure. The hexagonal mesh pattern creates discrete segments that can independently bear load, maintaining overall structural integrity even when individual wires fail.
3Ease of manufacture
If existing manufacturing machines are used, then the production process is simple, but they are not suitable for producing hexagonal netting with high carbon steel wires of higher tensile strength
Solution Approach 1:
The manufacturing process is segmented into distinct functional stages: wire pre-twisting in tubes, straightening in guides, braiding in spindles, and shaping on the receiving drum. This segmentation allows each component to be optimized for its specific function, making the overall system capable of processing high carbon steel wires while maintaining operational simplicity through modular, specialized components.
Solution Approach 2:
The patent introduces intermediary components between the wire source and the final netting product: pre-twisting tubes that prepare the wires, straightening guides that condition them for braiding, and a specially configured receiving drum with detent elements that forms the hexagonal mesh. These intermediaries enable existing machine architectures to handle high-strength wires by adding specialized preparation and shaping stages.
Data Source
AI summary
A hexagonal wire netting, a process for manufacturing such a wire netting and a device for manufacturing a hexagonal wire netting, the device including an assembly of tubes for leading the wires of which every other is twisted into a spiral shape, a spindle assembly and a drum receiving the wire netting, the drum being provided with detent elements. Between each tube leading the spirally twisted wire and the cooperating spindle a straightening guide is located having an inlet opening cooperating with the tube and an outlet opening cooperating with the spindle. The detent elements are arranged on the drum in such a way that the produced wire netting has meshes in which the proportion of the width to the length is less than 0.75.