Cutter head for mining machine
AssigneeJoy Global Underground Mining LLC
InventorsRussell P. Smith, Andrew D. Hunter, Peter A. Lugg, Ian B. Schirmer, Geoffrey W. Keech, Christopher Coates, Bradley M. Neilson
Life of this patent
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Abstract
A cutter head includes a first member, a cutting bit, and a second member. The first member includes a first end and a second end and includes a first mass. The cutting bit is coupled to the first member proximate the second end. The cutting bit includes a cutting edge rotatable about the axis. The second member is rotatable about the axis and includes a second mass eccentrically positioned with respect to the axis. Rotation of the second mass causes the first member and the cutting bit to oscillate.
Claims23
A mining machine comprising:
- a frame for supporting the machine on a support surface;
- a boom including a first end coupled to the frame and a second end positioned away from the frame;
- a cutter head coupled to the second end of the boom, the cutter head including
- a first member defining a first end and a second end, the first member including a first mass,
- a cutting bit coupled to the first member proximate the second end, the cutting bit including a cutting edge, the first member and the cutting bit at least partially defining a first mass center, and
- a second member rotatable about an axis and including a second mass eccentrically positioned with respect to the axis, the first mass and the second mass at least partially defining a combined center of mass, rotation of the second mass about the axis causing the first member and the cutting bit to oscillate about the combined center of mass;
- and
- a coupling mechanism including a first end positioned adjacent the second end of the boom and a second end coupled to the cutter head, the coupling mechanism supporting the cutter head,
- wherein the cutting bit is rotatable relative to the first member.
A mining machine comprising:
- a frame for supporting the machine on a support surface;
- a boom including a first end coupled to the frame and a second end positioned away from the frame;
- a cutter head including a first member and a cutting bit, the first member including a first end and a second end, the cutting bit coupled to the first member proximate the second end, the cutting bit including a cutting edge;
- and
- a coupling mechanism including a first end positioned adjacent the second end of the boom and a second end coupled to the cutter head, the coupling mechanism resiliently supporting the first member to permit oscillation of the cutter head relative to the boom,
- wherein the coupling mechanism includes a joint permitting the first member to pivot relative to the second end of the boom in multiple directions, and the coupling mechanism includes a plurality of fluid cylinders positioned around the joint.
A mining machine comprising:
- a frame for supporting the machine on a support surface;
- a boom including a first end coupled to the frame and a second end positioned away from the frame;
- a cutter head including a first member and a cutting bit, the first member including a first end and a second end, the cutting bit coupled to the first member proximate the second end, the cutting bit including a cutting edge;
- and
- a coupling mechanism including a first end positioned adjacent the second end of the boom and a second end coupled to the cutter head, the coupling mechanism resiliently supporting the first member to permit oscillation of the cutter head relative to the boom,
- wherein the coupling mechanism includes at least one spring and a pin extending through the spring and between the first end of the first member and the second end of the boom, the spring exerting a spring force on the first member to bias the first member against a reaction force exerted on the cutting bit.
Dependencies are inferred from the claim text.