Turbomachine Harness Retention via Elastic Profiled Element
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Solution Overview
Problem
Existing devices for securing electrical harnesses in turbojet applications are inflexible, require specific retaining points and elements for standard harness sizes, leading to premature wear and increased mass and cost, and are cumbersome for maintenance and addition of harnesses.
Innovation Solution
A device featuring a hollow profiled element with slots and a touch-and-close tape with an end stop, allowing for secure clamping without additional mechanical equipment, reducing the number of securing points and enabling flexible use by distributing clamping forces evenly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If standard retaining points (quadrants or clips) are used for each harness, then harness retention is achieved, but device complexity and mass increase
Solution Approach 1:
Multiple retaining functions are merged into a single continuous elastic element that can simultaneously retain multiple harnesses along its length, eliminating the need for separate quadrants or clips at different locations
Solution Approach 2:
The elastic element serves multiple functions: it acts as both the retaining structure and the securing mechanism, replacing both quadrants and clips while providing flexible adaptation to different harness configurations
2Ease of manufacture
If standard-sized retaining elements are used, then manufacturing is simplified, but adaptability to different harness dimensions is reduced
Solution Approach 1:
The elastic element's physical parameters (length, cross-section, elasticity) can be varied to match different harness dimensions, allowing the same basic component type to adapt to various harness sizes without requiring completely different standardized elements
Solution Approach 2:
The elastic element provides dynamic adaptation through its deformability, allowing it to conform to different harness dimensions while maintaining retaining functionality, bridging the gap between standardized manufacturing and customized fit
3Reliability
If multiple retaining points are used for each harness, then secure retention is achieved, but wear and tear on harnesses increases
Solution Approach 1:
The elastic element acts as a flexible retaining structure that distributes contact forces along its length rather than concentrating them at discrete points, reducing stress concentrations and premature wear on the harnesses
Solution Approach 2:
The elastic nature of the element provides inherent cushioning that absorbs mechanical stresses before they can damage the harnesses, preventing premature wear and extending service life
4Reliability
If additional mechanical equipment (batten) is added to the turbojet periphery, then harness retention is improved, but device complexity and maintenance burden increase
Solution Approach 1:
The retaining function is extracted from the fixed mechanical structure (quadrants, clips, battens) and transferred to a flexible element that can be integrated into the existing harness routing, eliminating the need for additional peripheral mechanical equipment on the turbojet
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 solution provides secure, flexible, and cost-effective harness retention with reduced wear and tear, eliminating the need for multiple retaining points and standard-sized elements, simplifying installation and maintenance.
Implementation Method 1
a touch-and-close tape adjusted to cooperate with the width of the slots such that it can pass either side of the profiled element
Implementation Method 2
an end stop coupled to the tape, where the said end stop enables its passage through one of the slots of the profiled element to be blocked
Implementation Method 3
enabling flexible use by distributing clamping forces evenly
Data Source
AI summary
The device for securing and retaining at least one electrical harness in a turbomachine includes: at least one hollow profiled element that extends in one direction and has at least two slots of approximately the same dimension and; and a clamping element intended to retain the at least one harness in position in a manner parallel to the hollow profiled element. The clamping element includes: a touch-and-close tape designed to cooperate with the width of the slots so as to allow it to pass on both sides of the profiled element and; an end stop secured to the tape, the end stop preventing the tape from passing through one of the slots in the profiled element.