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Title: Universal ripper miner

Abstract

A universal ripper miner used to cut, collect and transfer material from an underground mine working face includes a cutter head that is vertically movable in an arcuate cutting cycle by means of drive members, such as hydraulically actuated pistons. The cutter head may support a circular cutter bit having a circular cutting edge that may be indexed to incrementally expose a fresh cutting edge. An automatic indexing system is disclosed wherein indexing occurs by means of a worm gear and indexing lever mechanism. The invention also contemplates a bi-directional bit holder enabling cutting to occur in both the upstroke and the downstroke cutting cycle. Another feature of the invention discloses multiple bits arranged in an in-line, radially staggered pattern, or a side-by-side pattern to increase the mining capacity in each cutting cycle. An on-board resharpening system is also disclosed for resharpening the cutting edge at the end of cutting stroke position. The aforementioned improvement features may be used either singly, or in any proposed combination with each other.

Inventors:
 [1];  [2]
  1. Bloomington, MN
  2. Minneapolis, MN
Issue Date:
Research Org.:
National Energy Technology Laboratory, Pittsburgh, PA, and Morgantown, WV
OSTI Identifier:
867802
Patent Number(s):
5013093
Assignee:
United States of America as represented by Secretary of (Washington, DC)
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
universal; ripper; miner; cut; collect; transfer; material; underground; mine; cutter; head; vertically; movable; arcuate; cutting; cycle; means; drive; hydraulically; actuated; pistons; support; circular; bit; edge; indexed; incrementally; expose; fresh; automatic; indexing; disclosed; occurs; worm; gear; lever; mechanism; contemplates; bi-directional; holder; enabling; occur; upstroke; downstroke; feature; discloses; multiple; bits; arranged; in-line; radially; staggered; pattern; side-by-side; increase; mining; capacity; on-board; resharpening; stroke; position; aforementioned; improvement; features; singly; proposed; combination; worm gear; cutting edge; underground mine; bit holder; vertically movable; cutter head; ripper miner; universal ripper; transfer material; /299/

Citation Formats

Morrell, Roger J, and Larson, David A. Universal ripper miner. United States: N. p., 1991. Web.
Morrell, Roger J, & Larson, David A. Universal ripper miner. United States.
Morrell, Roger J, and Larson, David A. Tue . "Universal ripper miner". United States. https://www.osti.gov/servlets/purl/867802.
@article{osti_867802,
title = {Universal ripper miner},
author = {Morrell, Roger J and Larson, David A},
abstractNote = {A universal ripper miner used to cut, collect and transfer material from an underground mine working face includes a cutter head that is vertically movable in an arcuate cutting cycle by means of drive members, such as hydraulically actuated pistons. The cutter head may support a circular cutter bit having a circular cutting edge that may be indexed to incrementally expose a fresh cutting edge. An automatic indexing system is disclosed wherein indexing occurs by means of a worm gear and indexing lever mechanism. The invention also contemplates a bi-directional bit holder enabling cutting to occur in both the upstroke and the downstroke cutting cycle. Another feature of the invention discloses multiple bits arranged in an in-line, radially staggered pattern, or a side-by-side pattern to increase the mining capacity in each cutting cycle. An on-board resharpening system is also disclosed for resharpening the cutting edge at the end of cutting stroke position. The aforementioned improvement features may be used either singly, or in any proposed combination with each other.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1991},
month = {1}
}

Patent:

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