Cable Mounting System for Thermal Expansion Compensation
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Solution Overview
Problem
Cables secured to ladder racks experience damage due to differential thermal expansion and contraction rates, leading to broken connections, compression, or tension, which can cause cable distortion and damage to the ladder rack.
Innovation Solution
A cable mounting system comprising straight and widened ladder rack segments with cable bracket assemblies allowing axial movement and saddle bracket assemblies allowing axial and lateral movement, respectively, to accommodate thermal expansion and contraction of cables, using cable straps or ties for securement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If cables are securely fastened to ladder racks using brackets and straps, then connection reliability is improved, but thermal expansion and contraction causes cable distortion and damage to the ladder rack
Solution Approach 1:
The cable support system transitions from a static rigid bracket to a dynamic articulated mechanism with multiple degrees of freedom. The support member includes a first portion that rotates relative to the ladder rack and a second portion that rotates relative to the cable, enabling the system to dynamically adapt to thermal expansion and contraction while maintaining secure connection.
Solution Approach 2:
The invention introduces rotational degrees of freedom in multiple dimensions. The first portion rotates about a first axis relative to the ladder rack, and the second portion rotates about a second axis relative to the cable, adding dimensional flexibility that allows the cable to expand and contract without causing damage to the rigid ladder rack structure.
2Stability of the object's composition
If cables are rigidly connected to the ladder rack, then structural stability is improved, but differential thermal expansion rates cause broken connections and damage
Solution Approach 1:
The support member incorporates rotational joints that allow controlled movement while maintaining overall structural stability. The articulated mechanism provides flexibility to accommodate thermal changes without compromising the stability of the ladder rack structure or the integrity of the cable connection.
3Adaptability or versatility
If thermal expansion joints are added to the cable tray, then cable expansion is accommodated, but the problem of cable distortion and ladder rack damage is worsened
Solution Approach 1:
The support member acts as an intermediary between the rigid ladder rack and the flexible cable. It provides a controlled articulation point that mediates the thermal expansion forces, allowing the cable to expand and contract without directly transmitting damaging forces to the ladder rack or causing cable distortion.
4Force
If cables are allowed to move independently during thermal expansion, then forces on the ladder rack are reduced, but secure connection must be maintained
Solution Approach 1:
The articulated support mechanism allows controlled movement that reduces forces on the ladder rack while maintaining connection security. The rotational joints enable the cable to move independently during thermal expansion without disconnecting, while the gravity-dependent engagement ensures the cable remains securely attached during normal operation.
Solution Approach 2:
The support member automatically engages and disengages based on the direction of force. During thermal expansion, the cable can move freely as the joints rotate; during normal operation, gravity and the mechanical design ensure the cable remains securely held without requiring active control or additional fastening mechanisms.
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 system effectively reduces forces on cables and ladder racks, preventing damage by allowing independent expansion and contraction, thus maintaining a secure and durable connection.
Implementation Method 1
cables secured to a ladder rack that enable thermal expansion and contraction of the cables
Implementation Method 2
cables secured to a ladder rack that enable thermal expansion and contraction of the cables
Data Source
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AI summary
A cable mounting system that allows thermal expansion and contraction of cables. The cable mounting system includes straight ladder rack segments and widened ladder rack segments positioned adjacent the straight ladder rack segments. Cable bracket assemblies are mounted to the straight ladder rack segments and saddle bracket assemblies are mounted to the widened ladder rack segments. The cable bracket assemblies secure cables to the ladder rungs of the straight ladder rack segments and allow axial movement of the cables. The saddle bracket assemblies secure the cables on the ladder rungs of the widened ladder rack segments and allow axial and lateral movement of the cables.