Bayonet Drill Rod Connection for Torsion-Proof Locking
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Solution Overview
Problem
Existing drill string connection systems require additional components and complex procedures to achieve a torsion-proof connection, which is difficult to establish and disestablish, especially in harsh drilling conditions.
Innovation Solution
A bayonet connection system with a plug-and-rotate mechanism that includes an additional plug-in step for a rotationally fixed connection around the longitudinal axis, allowing paddle operation and secure non-rotatable connection in both directions of rotation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a transverse pin is used to create a torsion-proof connection, then the connection strength is improved, but the device complexity increases and the ease of operation deteriorates
Solution Approach 1:
The invention extracts and eliminates the transverse pin component from the connection system. Instead of using a separate pin to secure the bayonet connection, the patent designs the connection elements themselves to provide torsion-proof locking through their geometric shapes and engagement features, thereby reducing device complexity while maintaining connection strength
Solution Approach 2:
The invention merges the functions of connection and torsion-proof locking into a single integrated bayonet connection mechanism. The connection elements are designed with specific geometric features that simultaneously achieve axial connection and rotational locking, eliminating the need for separate pin components and simplifying the overall device structure
2Reliability
If a transverse pin is used to secure the connection, then the connection reliability is improved, but the ease of operation deteriorates due to difficult removal
Solution Approach 1:
The invention applies dynamics by designing the bayonet connection to be easily changeable between locked and unlocked states. The connection elements are configured to allow quick engagement through rotation and easy disengagement by reversing the rotation, enabling rapid connection and disconnection operations without difficult removal procedures
3Ease of operation
If an additional plug-in step is added for rotationally fixed connection, then the ease of operation is improved, but the device complexity increases
Solution Approach 1:
The invention segments the connection process into distinct functional zones within the bayonet connection structure. The connection elements are divided into specific engagement features that guide the plug-in motion and rotational locking motion separately, allowing the additional plug-in step to be easily performed without adding external components or increasing device complexity
Data Source
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AI summary
The invention relates to a drill string section (1) with at least one plug-in rotary mounting (bayonet mounting) (2) for interaction with a (bayonet) driver (5), wherein the mounting allows an additional plug-in step for fixing the driver in a rotationally fixed connection in both directions of rotation about the longitudinal axis of the drill string section.