Spiral Support for Cable Laying with Segmented Design

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Solution Overview

Problem

Existing spiral supports for bundling cables, particularly optical fiber cables, face difficulties in installation due to labor-intensive processes and rigidity issues when dealing with T-branches in messenger wires, requiring connectors that can hinder movement and lead to installation halts.

Innovation Solution

A spiral support design featuring alternately connected counterclockwise and clockwise spiral portions with reverse portions allows for easier installation by alternating rotations and eliminating the need for connectors, enabling smoother passage through T-branches and reducing labor requirements.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Length of moving object

If a long spiral support is used to cover the predetermined span, then the cable laying distance is improved, but the installation labor intensity increases due to continuous rotation requirement

Engineering Contradiction:

Improvecable laying distanceVSAvoidinstallation labor intensity

Core Design Contradiction:

Length of moving objectVSEase of operation

Solution Approach 1:

The spiral support is divided into multiple short spiral support sections, each covering a partial span. These sections are connected via connection sections to form a complete long-span support system. This segmentation allows each section to be installed independently with limited rotation, reducing installation labor intensity while achieving long cable laying distance through cumulative effect of multiple sections.

Inventive Principle:

Principle #1Segmentation

2Length of moving object

If a long spiral support is used to cover the predetermined span, then the cable laying distance is improved, but the number of rotations required increases imposing huge burden on worker

Engineering Contradiction:

Improvecable laying distanceVSAvoidinstallation time

Core Design Contradiction:

Length of moving objectVSLoss of time

Solution Approach 1:

Inventive Principle:

Principle #1Segmentation

3Ease of operation

If the rear end of spiral support is attached to support post, then the pulling operation is facilitated, but the installation becomes impossible when T-branch is present in messenger wire

Engineering Contradiction:

Improvepulling operation easeVSAvoidadaptability to T-branch configuration

Core Design Contradiction:

Ease of operationVSAdaptability or versatility

Solution Approach 1:

The spiral support is divided into multiple short spiral support sections connected by connection sections. This segmentation allows the support to be installed in sections along the messenger wire, enabling navigation around T-branches. Each section can be independently positioned and attached, providing flexibility to adapt to complex wire configurations while maintaining pulling capability within each section.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The connection sections between spiral support segments provide dynamic flexibility, allowing the rigid spiral sections to be positioned and attached at optimal locations. This dynamic configuration enables the support system to adapt to T-branches and other complex messenger wire arrangements while maintaining the structural integrity needed for effective cable pulling within each section.

Inventive Principle:

Principle #15Dynamics

4Adaptability or versatility

If multiple short spiral supports are connected to cover span, then the adaptability to T-branch is improved, but the device complexity increases due to connectors

Engineering Contradiction:

Improveadaptability to T-branch configurationVSAvoidconnector quantity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

Multiple spiral support sections and connection sections are merged into an integrated spiral support system. The connection sections are designed to seamlessly join spiral support segments, creating a unified structure that reduces the functional complexity of individual connectors while maintaining adaptability to T-branch configurations through the modular segmented design.

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS7644905B2Spiral support, installation method of the same, and cable laying method using the spiral support

Publication Date: 2010.01.12 FUJIKURA LTD

AI summary

A method and apparatus including an easily installed spiral support useful laying a cable. The spiral support is composed of a counterclockwise spiral portion and a clockwise spiral portion, both of which are connected to each other with a reverse portion therebetween. The spiral support is installed on a messenger wire in such a way that the reverse portion is fitted on the messenger wire; the spiral support is rotated counterclockwise or clockwise; and these steps are repeated.