Double-Skin Cargo Container Clamping Fasteners
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Solution Overview
Problem
Existing load transport containers with thermal insulation require significant repair effort to access the space between the inner and outer skins for maintenance or sensor replacement, leading to prolonged downtime and increased production costs.
Innovation Solution
A load transport container design featuring a double-shell construction where the outer skin is assembled and dismantled using clamping and holding elements, such as hook elements and toggle fasteners, allowing for non-destructive access without welding or riveting, and utilizing spacer ribs for thermal insulation and support.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the outer skin is welded or screwed to frame parts, then the connection is strong and reliable, but the repair effort and time required to access the space between inner and outer skins increases significantly
Solution Approach 1:
The outer skin is divided into multiple separate sheet metal elements that can be independently removed. Each element can be detached from the frame parts without affecting the entire structure, allowing selective access to specific areas between the inner and outer skins for maintenance activities.
Solution Approach 2:
Different connection methods are applied to different areas: clamping and holding elements are used where frequent access is needed, while other areas may use more permanent fixation methods. This allows optimization of both accessibility and structural integrity in different locations.
2Strength
If welding or riveting is used to attach the outer skin, then the structural integrity is maintained, but the disassembly process becomes destructive and time-consuming
Solution Approach 1:
The connection system transitions from a static permanent connection (welding/riveting) to a dynamic reversible connection using clamping elements. This allows the outer skin elements to be quickly attached and detached multiple times without degradation of the connection quality or structural integrity.
Solution Approach 2:
The outer skin elements are extracted from the permanent connection system and replaced with removable components. The clamping and holding elements provide sufficient structural integrity while enabling non-destructive removal for maintenance activities.
3Reliability
If traditional fastening methods are used for the outer skin, then the assembly is secure, but the maintenance access requires considerable repair work
Solution Approach 1:
Clamping elements and holding elements serve as intermediary components between the outer skin sheet metal elements and the frame parts. These intermediaries provide a secure mechanical connection that is inherently designed for easy release, facilitating maintenance without requiring destructive repair work.
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
Enables easy and efficient assembly and disassembly of the outer skin, reducing maintenance time and costs while maintaining dimensional stability and thermal insulation integrity.
Implementation Method 1
a layer of heat-insulating material on the outside of the inner skin
Data Source
Figure 1~7
AI summary
The invention relates to a cargo transport container for a cargo transport vehicle, comprising a wall arrangement with wall sections (26) that have an inner skin (14) made of sheet metal which at least partially delimits a loading space (12) of the cargo transport container, a layer of heat-insulating material on the outside of the inner skin (14) and an outer skin (16) made of sheet metal which covers the heat-insulating material on the outside, wherein the inner skin (14) is firmly connected to frame parts (2, 4) which extend on the outside of it in the longitudinal direction of the cargo transport container and are spaced apart transversely to the longitudinal direction of the cargo transport container, wherein the outer skin (16) is formed from sheet metal elements (26) which are tensioned and fixed between adjacent examples of the frame parts (2, 4) by means of tensioning elements (40) and retaining elements (32, 40).