MINING MACHINE WITH DRIVEN DISC CUTTERS

• US 20110181097A1
• Filed: 01/22/2010
• Published: 07/28/2011
• Est. Priority Date: 01/22/2010
• Status: Active Grant

• Current Assignee: Joy Global Underground Mining LLC (Komatsu Ltd.)
• Original Assignee: Joy Mm Delaware Incorporated (Komatsu Ltd.)
• Inventors: Skea, Theunis F.
• Granted Patent: US 8,636,324 B2
• Time in Patent Office: Days
• US Class Current: 299/73
• CPC Class Codes: E21C 25/16 Machines slitting solely by one or more rotating saws, cutting discs, or wheels
• CPC Class Codes: E21C 31/04 imparting both a rotary and reciprocating motion

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.

Claims

1. 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 said arm end by a disc cutter assembly for eccentrically driving the disc cutter, wherein said disc cutter is driven by said arm into the material to be mined, and wherein

said arm further includes a main portion, and a wrist portion pivotally attached to the main portion, said main portion including two spaced apart horizontal main plates, and a support rotatably mounted and extending between the two main plates, said wrist portion being pivotally mounted on the support, and pivotable relative to the main portion by rotating about the support.

2. A mining machine in accordance with claim 1 wherein said wrist portion includes two spaced apart mounting plates attached to said support, and two spaced apart wrist plates, parallel to but spaced radially outward from the mounting plates, said wrist plates being pivotally attached to the mounting plates by a wrist rod that extends between the wrist plates and through an opening in the mounting plates.

3. A mining machine in accordance with claim 2 wherein a cutter head mounting plate is attached to the wrist plates.

4. A mining machine in accordance with claim 2 wherein said uppermost and lower most wrist plates each include a hook that engages a bar extending between and radially outward from the mounting plates when the wrist portion is fully rotated in a counter clockwise direction.

5. A mining machine in accordance with claim 1 wherein the mining machine further includes two spaced apart hydraulic cylinders extend between the main portion and the wrist portion so that the wrist plates rotate relative to the main portion, one cylinder being attached to the mounting plate on one side of the support, and the other cylinder being attached to the same mounting plate on the other side of the support, so that by extending one cylinder and retracting the other cylinder, the wrist portion can pivot relative to the main portion about the support.

6. A mining machine in accordance with claim 1 wherein the mining machine further includes a wrist hydraulic cylinder is mounted on the lowermost mounting plate, and extends between the mounting plate and a wrist rod attached to and extending between the spaced apart wrist plates, and is received in and passing through a curved slot in the mounting plates, so that the wrist plates pivot relative to the mounting plates.

7. A mining machine in accordance with claim 6 wherein a cut out in the uppermost main portion plate removes a portion of the plate that might otherwise interfere with the wrist rod.

8. 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 said arm end by a disc cutter assembly for eccentrically driving the disc cutter, wherein said disc cutter is driven by said arm into the material to be mined, and wherein

said arm further includes a main portion, and a wrist portion pivotally attached to the main portion.