Cable Swivel with Integrated Pin for Rotationally Fixed Connection
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Solution Overview
Problem
Existing cable swivels require manual installation of a bar-shaped torque support, which is time-consuming and inefficient, especially when used with Kelly bars that require rotationally fixed connections for fluid, power, or data transmission.
Innovation Solution
A cable swivel design featuring a sleeve-shaped rotatable swivel part with an axial passage and a connecting pin that extends along this passage, allowing for a rotationally fixed connection to a component, such as a Kelly bar, without the need for manual installation of additional torque supports.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a bar-shaped torque support is manually installed after the Kelly bar is suspended on the cable swivel, then a rotationally fixed connection is achieved, but the installation process becomes time-consuming
Solution Approach 1:
The patent combines the torque support function directly into the cable swivel structure by integrating a connecting pin with a connecting section that forms a form- and/or force-locking connection. This merging eliminates the need for separate manual installation of a bar-shaped torque support, achieving both the rotationally fixed connection and reduced installation time
2Reliability
If a rotary feedthrough is arranged below the cable suspension with force flow around it, then gentle operation with little maintenance is achieved, but the structure becomes more complex
Solution Approach 1:
The cable swivel is designed to perform multiple functions: it provides rotatable suspension of the component, creates a rotationally fixed connection through the integrating connecting pin, and enables transmission of fluids, gases, electric power, and data through the tubular connecting pin. This multi-functionality reduces the need for separate components like rotary feedthroughs
3Adaptability or versatility
If the cable swivel is designed with a sleeve-shaped rotatable swivel part and connecting pin, then simultaneous rotatable suspension and rotationally fixed connection are achieved, but the manufacturing complexity increases
Solution Approach 1:
The cable swivel is segmented into distinct functional parts: a stationary first swivel part, a rotatable second swivel part with sleeve-shaped design and axial passage, and a connecting pin with connecting section. This segmentation allows each part to be manufactured separately with standard processes and then assembled, reducing overall manufacturing complexity while maintaining dual connection capabilities
Data Source
AI summary
The invention relates to a cable swivel for connecting a cable or a retainer to a component, in particular a Kelly bar, which is rotatable relative to the cable or the retainer, with a stationary first swivel part which can be fastened on the cable or the retainer, and a rotatable second swivel part which is supported in a rotatable and axially fixed manner on the stationary first swivel part and can be connected to the component. Furthermore, in the case of the invention provision is made in that the rotatable second swivel part is of sleeve-shaped design with an axial passage and in that on the stationary first swivel part a connecting pin is designed which at least partially extends axially along the passage of the rotatable second swivel part.