Insulating Support Element for Railway Vehicle Body Thermal Management
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Solution Overview
Problem
Existing railway vehicle bodies experience significant thermal conduction at support elements, leading to reduced thermal insulation and increased manufacturing costs and assembly time when using thermal shims.
Innovation Solution
A vehicle body design featuring support elements made of thermally insulating material, such as polyamide 6.6, with a flat first surface in contact with the outer wall and a perpendicular second surface in contact with a fixing wedge, allowing for solid fixing and reduced thermal conduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If aluminum support elements are used with large contact surfaces to ensure stability, then the structural stability is improved, but thermal conduction between inside and outside of the body increases
Solution Approach 1:
The support element material is changed from thermally conductive aluminum to thermally insulating material, fundamentally changing the thermal parameter while maintaining structural stability through the insulating material's mechanical properties
Solution Approach 2:
The support element is constructed as a composite structure combining thermally insulating material with fixing mechanisms (C-rail and screw), creating a multi-functional component that provides both structural support and thermal insulation
2Loss of energy
If thermal shims made of insulating material are added between walls and support elements to reduce thermal conduction, then thermal insulation is improved, but manufacturing cost and assembly time increase
Solution Approach 1:
The thermal insulation function previously performed by separate thermal shims is merged into the support element itself. The support element is manufactured as a single integrated piece that combines both structural support and thermal insulation functions, eliminating the need for separate insulation components
Solution Approach 2:
The support element is designed to provide its own thermal insulation through its material composition and geometry, without requiring additional insulating components. The L-shaped design with perpendicular surfaces allows it to self-containedly perform both mechanical support and thermal barrier functions
3Loss of energy
If thermal shims are added to reduce thermal conduction, then thermal insulation is improved, but assembly time increases
Solution Approach 1:
The support element integrates multiple functions (structural support and thermal insulation) into a single component, reducing the number of parts to be assembled and thereby reducing assembly time
Solution Approach 2:
The support element is designed with segmented geometry (L-shape with perpendicular surfaces) that allows for simplified assembly while maintaining functional integration, enabling quick installation against the wall and fixing wedge
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 design effectively limits thermal conduction between the inside and outside of the vehicle body, reduces manufacturing costs by eliminating the need for thermal shims, and simplifies assembly with a single-piece support element.
Implementation Method 1
at least one support element made of thermally insulating material between the inner wall and the outer wall
Data Source
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AI summary
The invention relates to a vehicle body (10), such as a railway vehicle, comprising: - an outer wall (20) and an inner wall (22), the outer (20) and inner (22) walls being arranged opposite each other, - at least one support element (26) made of thermally insulating material between the inner wall (22) and the outer wall (20), the at least one support element (26) having a first surface (40), preferably flat, in contact with the outer wall (20), - first means of fixing (30) the at least one support element (26) with the outer wall (20), at the level of the first surface (40), and - second means of fixing (32) the at least one support element (26) with the inner wall (22).