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US 8,636,324 B2Granted
Mining machine with driven disc cutters
AssigneeJoy MM Delaware, Inc.
InventorTheunis F. Skea
Life of this patent
Estimating the term…
Abstract
A mining machine including a cutting mechanism comprising an arm having an arm end, a disc cutter adapted to engage the material to be mined and mounted on the arm end. The disc cutter is driven by the arm into the material to be mined, and the arm further includes a main portion, and a wrist portion pivotally attached to the main portion.
Claims19
A mining machine for liberating material from a mine wall, the mining machine comprising:
- a frame;
- an arm coupled to the frame and including a main portion and a wrist portion, the wrist portion including a first member that is pivotably coupled to the main portion about a first axis and a second member pivotably coupled to the first member about a second axis, the second member including a cutter head, the cutter head having at least one disc cutter for engaging the mine wall, the cutter head defining a leading edge and a trailing edge, the leading edge being adapted to engage the mine wall before the trailing edge engages the mine wall when the wrist portion is pivoted relative to the main portion;
- a first actuator for pivoting the first member relative to the main portion, the first actuator including a first end coupled to the main portion and a second end directly coupled to the first member;
- and
- a second actuator for pivoting the second member relative to the first member, the second actuator including a first end coupled to the first member and a second end coupled to the second member,
- wherein the combined pivoting of the first member and the second member moves the leading edge through an angle greater than 180 degrees about the first axis.
3 more elements
A mining machine for liberating material from a mine wall, the mining machine comprising:
- an arm including a main portion and a wrist portion, the wrist portion including a first member that is pivotably coupled to the main portion about a first axis and a second member pivotably coupled to the first member about a second axis, the second member including a cutter head, the cutter head having at least one disc cutter for engaging the mine wall;
- a first actuator for pivoting the first member relative to the main portion, the first actuator including a first end coupled to the main portion and a second end directly coupled to the first member;
- and
- a second actuator for pivoting the second member relative to the first member, the second actuator including a first end coupled to the first member and a second end coupled to the second member,
- wherein the combined pivoting of the first member and the second member through a maximum range of motion moves the cutter head about the first axis between a first point and a second point, the angular distance between the first point and the second point relative to the first axis being more than 180 degrees.
2 more elements
Dependencies are inferred from the claim text.