Bundle Spacer With Rotational Joints For Dynamic Load Distribution
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Solution Overview
Problem
Overhead lines are exposed to dynamic loads such as wind and snow, leading to high mechanical forces that can cause damage due to fixed suspension methods, and existing bundle spacers do not adequately distribute these loads, potentially distorting the cable arrangement and affecting electrical properties.
Innovation Solution
A bundle spacer with a support frame that allows rotational mobility between conductor cables and a support cable, featuring joints that enable rotation and tilting, thereby distributing loads and preventing distortion, while maintaining fixed distances between cables.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If cables are fixed rigidly to the support frame, then the cable arrangement is stable and maintains precise spacing, but the cables cannot distribute mechanical loads from wind and snow, leading to high punctual forces and potential damage
Solution Approach 1:
The support frame incorporates joints that enable dynamic movement between cables and the support frame. These joints allow the cables to rotate and adjust their positions in response to external forces such as wind and snow loads, transforming the rigid fixed structure into a dynamic adaptive system that can distribute mechanical loads while maintaining cable spacing.
2Strength
If cables are allowed to move freely relative to each other, then mechanical loads are distributed effectively, but the cable spacing and arrangement cannot be maintained at fixed distances
Solution Approach 1:
The support frame is segmented into multiple independent joints, each connecting a cable to the frame. This segmentation allows each cable to move independently to distribute loads while the overall frame structure maintains the geometric relationships and fixed distances between cable mounting points, ensuring both mobility and precision.
Solution Approach 2:
The joints in the support frame are designed with specific mechanical parameters that allow controlled movement within defined ranges. These parameter changes enable the cables to adjust their positions for load distribution while the frame's structural parameters maintain the required spacing and arrangement precision.
3Strength
If additional support structures are added to increase cable strength and load distribution, then resistance to mechanical loads improves, but the device complexity increases
Solution Approach 1:
The support frame is designed as a multi-functional structure where the same joint elements serve multiple purposes: maintaining cable spacing, enabling load distribution through movement, and providing structural support. This universality avoids the need for separate components for each function, reducing overall device complexity while achieving enhanced strength and load distribution.
Data Source
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AI summary
The invention relates to a bundle spacer (16) for holding and spacing cables (12, 14) of an overhead power line (2), namely several conductor cables (12) and a support cable (14), with a support frame (18) which arranges the cables (12, 14) in a basic position when assembled and which has a receptacle (20, 22) for fastening each of the cables (12, 14), namely several conductor cable receptacles (20) and one support cable receptacle (22), wherein the cables (12, 14) run perpendicular to a transverse plane (Q) in the basic position. The bundle spacer (16) is characterized in that the support frame (18) has a hinge (24) by means of which at least one of the conductor cables (12) is rotatably held relative to the support cable (14) about an axis of rotation (D) which runs perpendicular to the transverse plane (Q).This results in improved flexibility between the cables (12, 14), particularly in the case of wind or snow loads and/or torsion of one of the cables (12, 14). The invention further relates to an overhead line (2) with a corresponding bundle spacer (16).