Drill Rod Positioning via Translational Displacement
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Solution Overview
Problem
Current positioning arrangements for drill rods during long borehole drilling are cumbersome, time-consuming, and lack precision, often requiring complex cam feeding arrangements and gripping organs that can transfer momentum, leading to alignment issues and inefficiencies.
Innovation Solution
A positioning arrangement featuring a positioning organ shaped as an elongated tray with a displacement arrangement that achieves translational alignment of the drill rod's length axis with the drill hole axis, eliminating the need for rotational displacement and reducing the risk of thread jamming, using an actuator and links for efficient and precise alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a complex cam feeding arrangement is used to position drill rods, then positioning capability is improved, but device complexity increases
Solution Approach 1:
The positioning system is divided into separate functional components: a positioning organ for supporting the drill rod and a displacement arrangement for movement. This segmentation allows each component to be optimized independently, reducing overall system complexity while maintaining positioning precision.
Solution Approach 2:
The invention extracts the essential positioning function from the complex cam feeding arrangement, retaining only the necessary elements (positioning organ and displacement arrangement) to achieve accurate drill rod positioning without the unnecessary complexity of the original system.
2Measurement precision
If gripping organs are used to transfer momentum to drill rods, then positioning capability is improved, but reliability decreases due to thread jamming risks
Solution Approach 1:
The positioning organ acts as an intermediary between the displacement arrangement and the drill rod, providing stable support and precise positioning without directly transferring momentum that could cause thread jamming. This intermediary approach maintains alignment precision while improving reliability.
3Adaptability or versatility
If rotational displacement is used to align drill rods, then positioning flexibility is improved, but manufacturing precision decreases due to axis misalignment
Solution Approach 1:
Instead of using rotational displacement to achieve alignment, the invention inverts the approach by using purely translational displacement of the positioning organ. This inversion maintains positioning flexibility while eliminating the risk of axis misalignment and thread jamming, thereby improving manufacturing precision.
4Ease of operation
If manual positioning methods are used for drill rods, then ease of operation is maintained, but productivity decreases due to time-consuming operations
Solution Approach 1:
The positioning organ is designed to be dynamically movable along the drill hole axis through the displacement arrangement, enabling fast and easy positioning operations. This dynamic capability significantly improves productivity while maintaining operational simplicity, as the operator only needs to control the displacement mechanism.
Data Source
AI summary
A positioning arrangement, a rod handling device, a drill rig and a method for positioning a drill rod are provided. The positioning arrangement comprises a positioning organ, arranged to position a drill rod with a length axis, and a displacement arrangement with a first portion and a second portion, the first portion being connected to the positioning organ and the second portion being connectable to a base part. The displacement arrangement is arranged to displace the positioning organ from a first position to a second position via a translational displacement, such that a length axis of a drill rod positioned by the positioning organ will be substantially aligned with the drill hole axis in the second position.