Universal ripper miner
- Bloomington, MN
- Minneapolis, MN
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.
- Research Organization:
- National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV (United States)
- Assignee:
- United States of America as represented by Secretary of (Washington, DC)
- Patent Number(s):
- US 5013093
- OSTI ID:
- 867802
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
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
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