Mining machine with multiple cutter heads

Patent metadata

Field	Value
Publication number	US-10415384-B2
Application number	US-201715418490-A
Country	US
Kind code	B2
Filing date	Jan 27, 2017
Priority date	Jan 27, 2016
Publication date	Sep 17, 2019
Grant date	Sep 17, 2019

Abstract

A mining machine includes a frame, a boom supported for pivoting movement relative to the frame, and a cutter head pivotably coupled to the boom. The cutter head includes a housing, a cutter shaft coupled to the housing, a cutting disc, and an excitation mechanism. A second portion of the cutter shaft extends parallel to a cutter axis. The cutting disc is coupled to the second portion of the cutter shaft and is supported for free rotation relative to the cutter shaft about the cutter axis. The cutting disc includes a plurality of cutting bits defining a cutting edge. The excitation mechanism includes an exciter shaft and a mass eccentrically coupled to the cutter shaft. The excitation mechanism is coupled to the first portion of the cutter shaft. Rotation of the exciter shaft induces oscillating movement of the second portion of the cutter shaft and the cutting disc.

First claim

We claim:

1. A mining machine comprising:
a frame;
a first boom supported for pivoting movement relative to the frame;
a second boom supported for pivoting movement relative to the frame, the second boom being movable independent of the first boom;
a first cutter head pivotably coupled to the first boom, the first cutter head movable through a first range of movement, the first cutter head including a first cutter shaft, a first cutting disc, and a first excitation mechanism, the first cutting disc supported for free rotation relative to the first cutter shaft about a first cutter axis, the first cutting disc including a plurality of first cutting bits defining a first cutting edge, the first excitation mechanism including a first exciter shaft and a first mass eccentrically coupled to the first cutter shaft, rotation of the first exciter shaft inducing oscillating movement of the first cutter shaft and the first cutting disc; and
a second cutter head pivotably coupled to the second boom, the second cutter head laterally offset from the first cutter head in a direction transverse to a longitudinal axis of the frame, the second cutter head movable through a second range of movement intersecting the first range of movement at an overlap region, the second cutter head being laterally movable into a position that overlaps a position of the first cutter head in a height direction of the frame, the second cutter head including a second cutter shaft, a second cutting disc, and a second excitation mechanism, the second cutting disc supported for free rotation relative to the second cutter shaft about a second cutter axis, the second cutting disc including a plurality of second cutting bits defining a second cutting edge, the second excitation mechanism including a second exciter shaft and a second mass eccentrically coupled to the second cutter shaft, rotation of the second exciter shaft inducing oscillating movement of the second cutter shaft and the second cutting disc.

2. The mining machine of claim 1 , further comprising a yoke supported for movement relative to the frame, the first boom and the second boom each pivotably coupled to the yoke, wherein movement of the yoke advances the first cutter head and the second cutter head in a sump direction.

3. The mining machine of claim 2 , wherein the yoke is supported for translational movement relative to the frame in a direction parallel to a longitudinal axis of the frame, and the yoke is also supported by pivoting movement relative to the frame about an axis transverse to the longitudinal axis of the frame.

4. The mining machine of claim 1 , further comprising a gathering head coupled to a base of the frame and including a deck having a forward edge, wherein when each cutter head is in a lowermost position, the respective cutting edge is positioned adjacent the forward edge of the deck.

5. The mining machine of claim 1 , wherein each cutter shaft includes a first portion and a second portion, each cutting disc supported for rotation on the second portion of the respective cutter shaft, each excitation mechanism positioned adjacent the first portion of the respective cutter shaft.

6. The mining machine of claim 1 , wherein each cutter head includes a motor for driving the respective exciter shaft about an exciter axis.

7. The mining machine of claim 6 , wherein the exciter axis is aligned with the cutter axis.

8. The mining machine of claim 1 , wherein the frame includes a chassis and a sumping frame that is movable relative to the chassis, wherein the first boom and the second boom are coupled to a yoke supported on the sumping frame such that the first boom, the second boom, the first cutter head, and the second cutter head are movable relative to the chassis.

9. The mining machine of claim 1 , wherein the boom including a first portion and a second portion pivotably coupled to the first portion, the cutter head coupled to the second portion of the boom, wherein the first portion is pivotable about a first axis and the second portion is pivotable about a second axis that is substantially perpendicular to the first axis.

Assignees

• Joy Mm Delaware Inc
• Joy Global Underground Mining Llc

Inventors

• Lugg Peter A
• Keech Geoffrey W
• Neilson Bradley M
• Daher Nagy
• Boyd Ric

Classifications

• E21D9/102

  by a longitudinally extending boom being pivotable about a vertical and a transverse axis · CPC title

• E21C35/20

  General features of equipment for removal of chippings, e.g. for loading on conveyor · CPC title

• E21C31/04

  imparting both a rotary and reciprocating motion · CPC title

• E21C27/02

  solely by slitting (rods, drums, for same E21C25/10; saws, discs, wheels E21C25/18; chains, chain guides, for same E21C25/28) · CPC title

• E21C25/18 Primary

  Saws; Discs; Wheels · CPC title