Lifting Sling Assembly Contiguous Design for Secure BOP Connections
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Solution Overview
Problem
Conventional lifting assemblies for BOPs and drilling equipment on land-based wells suffer from insecure connections to elevators, leading to potential damage and inefficiencies due to removable and misplaced components, as well as the use of non-standard assembly components without proper tagging or marking.
Innovation Solution
A proprietary lifting sling assembly with a permanent, contiguous design featuring a centering housing element, centering collar, and concentric flange member, where wire rope is swaged into the centering collar element, providing a secure and efficient connection that can be adapted to fit different elevator dimensions and certified for specific load limits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional lifting assemblies use removable connections to elevators, then ease of operation is improved, but reliability deteriorates due to insecure connections and component misplacement
Solution Approach 1:
The patent integrates the connection components (box, collar, flange member) into a single contiguous assembly that cannot be separated, eliminating the risk of component misplacement while maintaining ease of operation through standardized attachment procedures to elevators
2Adaptability or versatility
If conventional lifting assemblies use non-standard components, then adaptability is improved, but manufacturing precision deteriorates due to lack of proper tagging and marking
Solution Approach 1:
The patent designs the contiguous assembly with standardized dimensions and attachment features that can accommodate different elevator types and configurations, providing universal adaptability while maintaining precise manufacturing through consistent design specifications
Solution Approach 2:
The patent employs standardized dimensional parameters and geometric features in the contiguous assembly design that enable precise manufacturing while maintaining adaptability to various elevator configurations through parameter-based compatibility
3Ease of repair
If conventional lifting assemblies use separate components, then ease of repair is improved, but loss of substance worsens due to components being removed and misplaced
Solution Approach 1:
The patent combines all connection components into a single contiguous assembly that remains intact throughout use, eliminating the risk of component loss while maintaining repairability through standardized interfaces that allow systematic inspection and replacement of the entire assembly
Data Source
AI summary
A lifting sling assembly comprises a centering collar element forming a concentric sleeve around a central concavity, a centering housing element, a wire rope, and a lifting support. The centering housing element is defined by a concentric flange member forming a concentric sleeve around the centering housing element. The wire rope is inserted into the central concavity, and the centering collar element is swaged onto the wire rope. The centering collar element, the centering housing element, and the concentric flange member are integrated into a contiguous non-welded assembly such that the wire rope remains rigid within the centering collar member. The lifting support is a mechanical support lifting apparatus.