Ratchet Locking Mechanism for Drilling Rig Axial Splines
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Solution Overview
Problem
Existing drilling rig connection systems face challenges in preventing relative rotation between components during drilling, leading to loose connections, increased noise, and wear, particularly when using lock rings, which require complex alignment and can result in disengagement issues.
Innovation Solution
A ratchet-type locking mechanism with axial splines and a circlip system that allows components to engage securely, preventing rotation in one direction while allowing axial motion, ensuring stable connection and easy assembly by aligning splines before locking, and using a rubber wedge to absorb vibrations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a lock ring is used to prevent relative rotation between drilling rig components, then connection stability is improved, but assembly complexity increases due to requiring complex rotational alignment of splines during locking
Solution Approach 1:
Instead of requiring the splines to be aligned rotationally during locking (complex alignment), the invention inverts the approach by using a ratchet mechanism that allows axial motion to automatically engage the locking function. The locking occurs through axial displacement rather than rotational alignment, simplifying the assembly process while maintaining connection stability.
Solution Approach 2:
The locking function is segmented into two independent mechanisms: a ratchet mechanism for preventing reverse rotation and splines for allowing axial motion. This segmentation allows each mechanism to perform its specific function independently, eliminating the need for complex alignment between them during assembly.
2Reliability
If a ratchet mechanism is used to prevent reverse rotation, then connection reliability is improved, but device complexity increases due to additional locking components
Solution Approach 1:
The invention merges the ratchet mechanism and spline mechanism into a single integrated locking apparatus. The ratchet teeth and splines are combined in one component structure that performs both functions simultaneously, reducing the number of separate parts while maintaining connection reliability through the ratchet's reverse rotation prevention.
3Stability of the object's composition
If components are tightly connected to prevent loosening, then connection stability is improved, but vibration and wear increase due to rigid connection under drilling pressure
Solution Approach 1:
The invention introduces dynamic characteristics to the connection by allowing axial motion through the spline mechanism while preventing reverse rotation through the ratchet. This dynamic design enables the connection to absorb vibrations and adjustments during drilling operations, reducing wear and harmful factors while maintaining stability against loosening.
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 effectively locks drilling rig components in place, preventing disengagement and reducing noise and wear, while simplifying the assembly process by allowing components to be connected without requiring complex rotational alignment of splines during locking.
Implementation Method 1
using a rubber wedge to absorb vibrations
Implementation Method 2
a first locking means that enables the first and second drilling rig components to be locked in their connected state by causing, during rotation of the first drilling rig component in the first direction, the locking apparatus to engage with the first drilling rig component in a configuration that prevents the first drilling rig component from rotating in a direction opposite to the first direction
Implementation Method 3
a second locking means that enables the locking apparatus to be prevented from rotation relative to the second drilling rig component
Data Source
AI summary
The present application relates to a locking apparatus for locking axial ends of first and second drilling rig components in a connected state, the connected state established by sufficiently rotating the first drilling rig component relative to the second drilling rig component in a first direction. The apparatus includes a first locking means that enables the first and second drilling rig components to be locked in their connected state by causing, during rotation of the first drilling rig component in the first direction, the locking apparatus to engage with the first drilling rig component in a configuration that prevents the first drilling rig component from rotating in a direction opposite to the first direction. The apparatus further includes a second locking means that enables the locking apparatus to be prevented from rotation relative to the second drilling rig component, including during rotation of the first drilling rig component in the first direction, the locking apparatus thereby preventing relative rotation between the first and second drilling rig components.