New Mining Tools and Methods for Roadheader Mining Heads

✍ Scribed by Krzysztof Kotwica

• Publisher: Springer
• Year: 2022
• Tongue: English
• Leaves: 141
• Category: Library

✦ Synopsis

This book introduces new solutions for mining tools, unique lubricated holders and mining methods for hard-rock mining using mini-disk tools. In the first part, it describes problems connected with hard-rock mining using traditional mining methods like cutting. Then an alternative for conical pick is discussed, the so-called crown or bell pick and a new solution of a holder for conical picks allowing for tool rotation. These solutions should make it possible to increase the durability of cutting tools. The final part of the book explains a new mining head solution with mini-disk tools and a complex motion trajectory. With this, mining heads can be replaced in currently used roadheaders instead of standard mining heads.

This book can be used by employees of the mining industry, manufacturers of mining tools, machines and equipment, as well as employees and students of mining and mechanical faculties of technical universities.

✦ Table of Contents

Preface
Acknowledgements
Contents
1 Introduction
1.1 Mining Methods of Hard Rock Mining
1.2 The Benefits of Mechanical Technology
1.3 Machines and Mining Tools Used in Mechanical Methods of Hard Rock Mining
References
2 Problems of Hard Rock Mining Using Cutting Tools
2.1 The Theory of Mechanical Mining of Rocks by Cutting
2.2 Pick Edge Wear and Its Influence on the Efficiency of the Cutting Process
2.2.1 Possibilities of Increasing the Durability of Conical Picks
References
3 The Hard Rock Mining Using Disk Tools
3.1 The Principle of Mining with a Smooth, Symmetrical Disk Tool
3.2 The Advantages and Disadvantages of Hard Rock Mining Using Symmetrical Disk Tool
3.3 Hard Rock Mining Using the Undercutting Method and Asymmetrical Disk Tool
References
4 The Crown Pick as an Alternative for the Conical Pick
4.1 The Construction and Principle of Work of the New Solution of the Crown Pick
4.2 The Comparative Laboratory Stands Tests of a New Type of Crown Pick and Conical Pick
4.3 Laboratory Tests of Crown Pick Solutions in Order to Select the Most Advantageous Version
4.4 Field Tests of the New Solution of the Crown Pick
4.5 Industrial Tests of the New Solution of the Crown Pick
References
5 Lubricated Holder for Conical Pick
5.1 Possibilities of Elimination or Reduction of Hazards Occurring During Rock Mining with Conical Picks
5.2 The Construction and Principle of Work of the New Solution of the Lubricated Holder of Conical Pick
5.3 The Comparative Laboratory Tests of the Standard and Lubricated Conical Pick Holder
5.4 Laboratory Tests of Lubricated Holder Solutions of Conical Picks to Select the Most Advantageous Version
5.5 Field Tests of the New Solution of Lubricated Holder Solutions of Conical Picks
5.6 Industrial Tests of the New Solution of Lubricated Holder Solutions of Conical Picks
References
6 The Mining Head with Mini-Disk Tools with Complex Motion Trajectory
6.1 The Conception of a New Solution of Mining Head with Mini-Disk Tools
6.2 Laboratory Tests of the New Mining Head Solution and Mini-Disk Tools
6.2.1 Laboratory Tests of a Single Plate with Mini-Disk Tools with A straight-Motion Trajectory
6.2.2 Laboratory Tests of Pressing the Single Mini-Disk Tools into the Rock Sample
6.2.3 Laboratory Tests of a Single Plate with Mini-Disk Tools with A Complex-Motion Trajectory
6.3 Developing and Manufacturing of New Solution of the Mining Head with Mini-Disk Tools of Complex-Motion Trajectory
6.4 Field Tests of the New Solution of the Mining Head with Mini-Disk Tools of Complex-Motion Trajectory
References
7 Summary and Final Comments
7.1 The Concept of New Lubricated Crown Tool
7.2 Proposal of the New Design of Four-Plate Mining Head with Disk Tools of Complex Trajectory
7.3 Proposal of the Concept of Single Drive for Mining Head with Disk Tools of Complex Trajectory
7.4 Proposal of New Materials and Manufacturing Technology of Asymmetrical Mini-Disk Tools
7.5 Summary
References