Mining machine with driven disc cutters

• US 7,934,776 B2
• Filed: 08/31/2007
• Issued: 05/03/2011
• Est. Priority Date: 08/31/2007
• Status: Active Grant

• Current Assignee: Joy Global Underground Mining LLC (Komatsu Ltd.)
• Original Assignee: Joy Mm Delaware Incorporated (Mitsui & Company Limited)
• Inventors: de Sousa, Joaquim Antonio Soares, Skea, Theuns Fichardt, Möller, Arthur Kenneth, Veldman, Charl Christo, de Andrade, Alex Freire
• Primary Examiner(s): KRECK, JOHN J
• Application Number:
  US11/849,262
• Publication Number:
  US 20090058172A1
• Time in Patent Office: 1,341 Days
• Field of Search: 299/73, 299/74, 299/75, 299/76, 299/77, 299/78, 299/14
• US Class Current: 299/75
• CPC Class Codes: E21B 44/02 Automatic control of the tool feed E21B44/005, E21B44/10 take precedence
• CPC Class Codes: E21C 25/16 Machines slitting solely by one or more rotating saws, cutting discs, or wheels
• CPC Class Codes: E21C 25/18 Saws; Discs; Wheels
• CPC Class Codes: E21C 27/02 solely by slitting rods, drums, for same E21C25/10; saws, discs, wheels E21C25/18; chains, chain guides, for same E21C25/28
• CPC Class Codes: E21C 27/20 Mineral freed by means not involving slitting
• CPC Class Codes: E21C 27/24 by milling means acting on the full working face , i.e. the rotary axis of the tool carrier being substantially parallel to the working face similar machines for tunneling E21D9/1026
• CPC Class Codes: E21C 27/32 by adjustable or non-adjustable planing means with or without loading arrangements by percussed planing means E21C27/46
• CPC Class Codes: E21C 35/00 Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
• CPC Class Codes: E21D 9/1013 on a tool-carrier supported by a movable boom

Abstract

A mining machine includes a cutting mechanism with an arm, and a substantial weight of more than a thousand pounds attached to the arm. The mining machine also includes a first disc cutter adapted to engage the material to be mined and mounted on a first disc cutter assembly for eccentrically driving the first disc cutter, the first disc cutter assembly being mounted within the substantial weight. The mining machine also includes at least a second disc cutter spaced apart from the first disc cutter assembly and adapted to engage the material to be mined, and mounted on a second disc cutter assembly for eccentrically driving the second disc cutter, the second disc cutter assembly being mounted within the substantial weight.

Claims

1. A mining machine including

a cutting mechanism comprising

an arm,

a substantial weight of more than a thousand pounds attached to said arm,

a first disc cutter adapted to engage the material to be mined and mounted on a first disc cutter assembly for eccentrically driving the first disc cutter, the first disc cutter assembly being mounted within the substantial weight,

a second disc cutter spaced apart from said first disc cutter assembly and adapted to engage the material to be mined, and mounted on a second disc cutter assembly for eccentrically driving the second disc cutter, the second disc cutter assembly being mounted within the substantial weight,

a platform,

means for mounting said arm for swinging side to side movement on said platform, and

means to swing said arm from side to side.

2. A mining machine in accordance with claim 1 wherein said arm has an arm end,

and wherein said first disc cutter is mounted on said arm end and adapted to engage the material to be mined,

and wherein said second disc cutter is mounted on said arm end and spaced apart from said first disc cutter and adapted to engage the material to be mined,

said two disc cutters being mounted on said arm end so that the disc cutters cut equal depths into the material to be mined.

3. A mining machine including

a cutting mechanism comprising

an arm,

means for mounting said arm for swinging horizontal side to side movement on said forward platform,

said mounting means including pivot means for vertical top to bottom movement of said arm,

said pivot means including

a split support pin, the split support pin including a top pin and a bottom pin,

an upper spherical bearing housing receiving said top pin,

a lower spherical bearing housing receiving said bottom pin,

an upper spherical bearing between said upper spherical bearing housing and said support pin, and

a lower spherical bearing between said lower spherical bearing housing and said support pin.

4. A mining machine in accordance with claim 3 wherein said pivot means includes a lever attached to said lower spherical bearing housing.