Adjustable Drill Rod Support With V-Shaped Recess

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Solution Overview

Problem

Existing drill rod support halves are designed to fit specific drill string dimensions and shapes, leading to frequent wear and the need for frequent replacements due to impaired guiding performance as they wear down, resulting in increased costs and time-consuming exchanges for different drill strings.

Innovation Solution

A drill rod support half with a V-shaped recess that allows for adjustable positioning and use with drill strings of different sizes and shapes, maintaining guiding capability even as the halves wear, by adjusting the distance between the halves and using wear-resistant materials.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If drill rod support halves are designed to fit a specific drill string dimension and shape, then guiding precision is improved when new, but the support halves wear down quickly and require frequent replacement

Engineering Contradiction:
Improveguiding precisionVSAvoidservice life of support halves
Core Design Contradiction:
Manufacturing precisionVSDuration of action of moving object

Solution Approach 1:

The recess shape is changed from a custom-fit geometry to a generally V-shaped profile. This parameter change allows the support halves to accommodate drill strings of different dimensions and shapes while maintaining adequate guiding performance. The V-shape provides a universal guiding surface that does not require precise matching to a specific drill string geometry, thereby reducing wear and extending service life.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The drill rod support halves are designed with a universally applicable V-shaped recess that can guide drill strings of various dimensions and shapes. This multi-functional design eliminates the need for multiple sets of support halves tailored to different drill string specifications, allowing a single set to serve multiple purposes across different drilling operations.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Manufacturing precision

If drill rod support halves are customized for specific drill strings, then guiding performance is optimized, but time-consuming exchanges are required when changing drill strings

Engineering Contradiction:
Improveguiding performanceVSAvoidexchange time
Core Design Contradiction:
Manufacturing precisionVSLoss of time

Solution Approach 1:

The V-shaped recess design provides universal compatibility with drill strings of different dimensions and shapes. This eliminates the need to exchange support halves when changing drill strings, as the same support halves can accommodate various drill string specifications, thereby significantly reducing exchange time and operational downtime.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The support halves are designed to be adjustable in position along the drill rod support structure. This dynamic positioning capability allows the support halves to be repositioned to accommodate different drill string sizes and shapes without requiring replacement, enabling quick adaptation to changing drilling requirements.

Inventive Principle:
Principle #15Dynamics

3Reliability

If drill rod support halves are worn, then the fit with drill string deteriorates, but replacing support halves frequently increases equipment costs

Engineering Contradiction:
Improveguiding fitVSAvoidequipment cost
Core Design Contradiction:
ReliabilityVSQuantity of substance

Solution Approach 1:

The V-shaped recess geometry is inherently more resistant to wear than custom-fit geometries. The tapered shape distributes contact stresses more evenly and maintains adequate guiding clearance even as wear occurs. This parameter change extends the service life of the support halves, reducing the frequency of replacement and associated equipment costs.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

By designing support halves with a universally applicable V-shaped recess that resists wear, the invention reduces the frequency of replacement needed. This decreases the overall consumption of support half components and associated costs, making the system more economically efficient over time.

Inventive Principle:
Principle #27Cheap short-living objects (Disposable)

Data Source

PatentUS7814994B2Drill rod support, and drill rod support half
Publication Date: 2010.10.19 EPIROC ROCK DRILLS AB
  • US7814994B2 patent drawing
  • US7814994B2 patent drawing
  • US7814994B2 patent drawing

AI summary

Drill rod support (10) comprising means capable of moving two opposing drill rod support halves (20), each half (20) comprising a surface (21) for direct contact with the drill string (30), and the half being provided with a recess (23) capable of forming a drill string opening (22) with an opposing drill rod support half (20), the recess (23) being generally V-shaped, for enabling guiding of drill strings (30) of different shape and dimension. The invention is characterized in that the drill rod support halves (20) are movable to and from each other, for enabling contact with the drill string (30). The invention also relates to a drill rod support half (20) for use in such drill rod support.