Cable Shaft Frame Assembly Using Twisted Mechanical Connectors
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Solution Overview
Problem
Existing cable duct frames require complex welding processes, leading to large transportation needs and assembly challenges, as they are typically manufactured and assembled in a single, unwieldy state rather than in individual parts that can be easily assembled on-site.
Innovation Solution
A frame design featuring two interconnected frame parts with a plastically deformed connecting element, such as a twisted metal tab, that allows for a purely mechanical connection, enabling easy assembly and transportation in multiple parts, with the connecting element providing pre-tension for stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If welding is used to connect frame parts, then structural strength is improved, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The frame is divided into multiple separate frame parts that can be transported independently and assembled on-site through mechanical connection, eliminating the need for complex welding operations while maintaining structural integrity
Solution Approach 2:
The patent replaces the welding process (thermal/chemical bonding) with a purely mechanical connection system using connecting elements that are plastically deformed to secure frame parts together, simplifying both manufacturing and assembly
2Ease of operation
If frame is transported as a complete welded structure, then assembly simplicity is improved, but transportation space requirements increase
Solution Approach 1:
The frame structure is segmented into multiple transportable parts that can be collapsed or disassembled for compact transportation, then easily reassembled on-site using simple mechanical connecting elements without requiring welding equipment
3Ease of operation
If connecting element is plastically deformed for mechanical connection, then ease of assembly is improved, but manufacturing precision requirements increase
Solution Approach 1:
The connecting element is designed to be self-assembling through plastic deformation, where the deformation process itself creates the secure mechanical connection without requiring precision machining or complex alignment procedures
Solution Approach 2:
The connecting element undergoes controlled plastic deformation to change its physical parameters (shape, length), enabling it to secure frame parts together through elastic clamping force while maintaining adequate manufacturing tolerances
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
This design simplifies assembly, reduces transportation space requirements, and ensures a stable connection, allowing for quick and tool-free assembly by a fitter on-site, while maintaining structural integrity under load.
Implementation Method 1
a connecting element (26) which is plastically deformed compared to an initial state in such a way that the two frame parts (15) are firmly connected to one another
Implementation Method 2
the connecting element elastically clamps the two frame parts together. This allows for such a preload to be applied to the two frame parts that they are very securely connected
Data Source
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AI summary
The invention relates to a frame (3) for a cable duct, comprising at least a first frame part (12, 14) and a second frame part (14, 12) which are connected to each other in such a way that a corner of the frame is formed, wherein a connecting element (26) is provided which is plastically deformed compared to an initial state in such a way that the two frame parts (12, 14) are firmly connected to each other.