Rope Termination with Annular Load Pins for Multi-Core Tension
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Solution Overview
Problem
Existing rope terminations for multi-core ropes, particularly in the oil and gas industries, fail to withstand high tensile forces and provide adequate protection for sub-ropes, often leading to compression, abrasion, and unbalanced tension distribution, which can result in rope failure.
Innovation Solution
A rope termination design featuring load pins arranged in a closed annulus with radially extending tabs, where each sub-rope is spliced into itself to form a looped end around the load pins, minimizing compression and abrasion, and distributing tension evenly through the tabs and load pins, with a connector system that includes a sleeve member with flanges and locking mechanisms for secure connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If traditional rope terminations are used for multi-core ropes, then the rope can be terminated and connected, but the termination cannot withstand high tensile forces and leads to rope failure
Solution Approach 1:
The termination device segments the load distribution by providing individual load pins for each sub-rope, ensuring that tensile forces are evenly distributed across all sub-ropes rather than concentrated at a single point, thereby withstanding high tensile forces without failure
Solution Approach 2:
The load pins are arranged in a closed annulus around the longitudinal axis of the rope, transitioning from a linear arrangement to a two-dimensional circular distribution. This geometric arrangement optimizes load distribution and enables the termination to withstand high tensile forces from multiple directions
2Object-affected harmful factors
If sub-ropes are arranged in traditional terminations, then connection is possible, but sub-ropes are exposed to compression and abrasion causing damage
Solution Approach 1:
The closed annular arrangement of load pins positions each pin in a separate radial plane, eliminating contact between sub-ropes and preventing compression and abrasion. This two-dimensional distribution protects sub-rope integrity while maintaining connection strength
Solution Approach 2:
Each load pin is positioned to contact only its corresponding sub-rope at a specific location around the annulus, ensuring that each sub-rope experiences only tensile loading at its contact point without compression or abrasion from adjacent sub-ropes
3Stability of the object's composition
If uneven tension distribution occurs in traditional terminations, then connection is simple, but tension is not evenly distributed leading to weak points
Solution Approach 1:
The closed annular arrangement of load pins creates an equipotential load distribution system where each sub-rope experiences equal tensile force. The symmetric geometric arrangement ensures that no single sub-rope bears more load than others, eliminating weak points and ensuring uniform tension distribution across all sub-ropes
4Weight of moving object
If termination size is reduced for ease of transport, then transportability improves, but connection strength may be compromised
Solution Approach 1:
The closed annular arrangement of load pins creates a compact, space-efficient structure that minimizes the termination's overall size and weight while maintaining high connection strength. The circular geometry distributes material efficiently, providing maximum strength-to-weight ratio for transportability
Data Source
AI summary
A rope termination (10) for a rope (19) having a plurality of sub-ropes (21 -32), the rope termination including a connection device having a load pin (12)wherein each of the plurality of sub-ropes (21 -32) is spliced into itself to form a looped end, wherein the looped ends are arranged on the load pin and each of the plurality of sub-ropes (21 -32) is of equal length. The connection device further includes a connector (34) for a rope connection assembly whereby tension is equally transferred between the load pin and each of the plurality of sub-ropes.