Cable Laying Roller Unit With Oscillating Sliders for Curvature Control
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Solution Overview
Problem
Conventional roller units for laying cables lack flexibility and stability in adjusting radii of curvature, often resulting in cables curving excessively or not being able to accommodate varying laying geometries effectively, particularly when dealing with large diameters and high tension.
Innovation Solution
A roller unit with a frame and oscillating sliders, equipped with oscillation limiting teeth that prevent excessive curvature and allow precise adjustment of radii, combined with regulation members for varying the distance between the frame and the limiting teeth, enabling stable and flexible cable laying across different radii.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional roller units with fixed geometric work arc are used, then the structure is simple, but the adaptability to different laying geometries and radii of curvature is poor
Solution Approach 1:
The roller unit employs sliders that can oscillate dynamically around a common axis, allowing the geometric work arc to vary during operation. This dynamic capability enables the roller unit to adapt to different laying geometries and radii of curvature while maintaining a relatively simple overall structure, resolving the contradiction between adaptability and structural complexity.
2Adaptability or versatility
If the radius of curvature is reduced to accommodate tighter laying geometries, then the adaptability improves, but the cable may be damaged due to excessive surface pressure
Solution Approach 1:
The oscillating sliders allow the roller unit to dynamically adjust the radius of curvature during cable laying, ensuring that the cable is never subjected to excessively small radii that would cause damage. The system maintains adaptability to various laying geometries while automatically preventing harmful surface pressure on the cable.
3Adaptability or versatility
If oscillating sliders are introduced to improve adaptability, then the flexibility increases, but the stability in maintaining minimum radii of curvature decreases
Solution Approach 1:
The oscillating sliders are designed with predetermined geometric constraints that prevent them from oscillating beyond a certain range. This preliminary design feature ensures that the minimum radius of curvature is never exceeded, providing stability in maintaining safe radii while still allowing the necessary oscillation for adaptability.
4Object-affected harmful factors
If large diameter pulleys are used to avoid cable damage, then the cable protection improves, but the device size and weight increase significantly
Solution Approach 1:
Instead of using a single large-diameter pulley, the roller unit segments the cable support function across multiple smaller rollers mounted on oscillating sliders. This segmentation allows the system to achieve the same cable protection effect as a large pulley while significantly reducing the weight and size of individual components.
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 a stable and precise method to maintain minimum radii of curvature, allowing for efficient cable laying with high operating flexibility, accommodating larger diameters and radii, and reducing the risk of cable damage from excessive tension.
Implementation Method 1
the sliders are hinged to the frame and rotatable around respective axes of rotation in order to vary the inclination thereof with respect to the frame and therefore to vary the radius of curvature of the supported cable
Implementation Method 2
the oscillation limiting tooth is configured to abut against a wall of the frame when the slider, rotating around the respective axis of rotation, exceeds a certain inclination, so as to prevent an excessive reduction of the radius of curvature of the cable supported by the slider
Data Source
AI summary
Roller unit for laying cables (11, 12, 13) that comprises a frame (23, 23′) where at least one pair of sliders (25, 25′) are positioned aligned parallel to a laying direction (S1, S2) of the cables (11, 12, 13) and each provided with at least one pair of wheels (28, 28a, 28b) to support a cable (11, 12, 13) to be laid; the sliders (25, 25′) are hinged to the frame (23, 25′) and rotatable around respective axes of rotation (A, A′) in order to vary the inclination thereof with respect to the frame (23, 23′) and therefore to vary the radius of curvature (R, R1, R2, R3) of the supported cable (11, 12, 13); at least one of the sliders (25, 25′) comprises an oscillation limiting tooth (30, 30′) provided in at least one portion (32, 32′) of the slider (25, 25′) protruding from the frame (23, 23′) and configured to abut against a lateral wall (31, 31) of the frame (23, 23′) when the slider (25, 25′), rotating around the respective axis of rotation (A, A′), exceeds a certain inclination, so as to prevent an excessive reduction of the radius of curvature (R, R1, R2, R3) of the cable (11, 12, 13) supported by the slider (25, 25′).