Drill Assembly Disassembly Using Clamping and Gap Exposure

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

The process of withdrawing drilling tools and columns from a borehole is tedious and inefficient in existing drill machines, requiring a more effective method for disassembly.

Innovation Solution

A system comprising a first and second clamping mechanism, actuated to delink columns and a drill bit by creating a gap to reveal interfaces, facilitating the disassembly of drill assemblies in drill machines.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If traditional manual disassembly methods are used for drill assemblies, then the process is simple in terms of equipment, but the disassembly time is excessive and operational efficiency is low

Engineering Contradiction:
Improvedisassembly efficiencyVSAvoiddisassembly equipment complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The drill assembly disassembly system enables the drill string to disassemble itself automatically through the coordinated action of clamping mechanisms, actuators, and torque application systems, eliminating the need for manual intervention and significantly reducing disassembly time while maintaining controlled complexity through automated self-service functionality

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The disassembly system employs dynamic clamping mechanisms that can adaptively adjust their grip on drill string components during the disassembly process, allowing the system to handle varying torque requirements and component configurations, thereby improving disassembly efficiency without requiring overly complex fixed-configuration equipment

Inventive Principle:
Principle #15Dynamics

2Length of moving object

If drill strings are made longer to extend drill bit depth, then drilling depth is improved, but the difficulty of withdrawing and disassembling the drill string increases

Engineering Contradiction:
Improvedrill string lengthVSAvoidease of withdrawal and disassembly
Core Design Contradiction:
Length of moving objectVSEase of operation

Solution Approach 1:

The disassembly system automatically segments the long drill string into individual components or manageable sections through sequential clamping and torque application at various points along the drill string, making it easier to handle and store long drill strings by breaking them down into smaller segments without manual intervention

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The clamping mechanisms and actuators serve as intermediary devices that grip and manipulate specific sections of the long drill string, allowing operators to control and disassemble extended drill strings by applying force at intermediate points rather than handling the entire length at once, thereby improving ease of operation

Inventive Principle:
Principle #24Intermediary (Mediator)

Data Source

PatentUS11680452B2System and method for disassembling drill assemblies
Publication Date: 2023.06.20 CATERPILLAR GLOBAL MINING EQUIPMENT LLC
  • US11680452B2 patent drawing
  • US11680452B2 patent drawing
  • US11680452B2 patent drawing

AI summary

A system for disassembling a drill assembly including a drill bit and one or more columns interlinked with each other. The system includes a first clamping mechanism adapted to engage one of the drill bit or a first column, and a second clamping mechanism adapted to engage a second column disposed successively to the drill bit or the first column. The second clamping mechanism is turned relative to the first clamping mechanism to at least partially delink the second column from the first column or the drill bit. The system further includes a first actuator adapted to move one of the first clamping mechanism or the second clamping mechanism relative to the other to define a gap therebetween to reveal an interface between the second column and the drill bit or the first column for delinking the second column relative to the drill bit or the first column.