Machine supporting rock cutting device

Patent metadata

Field	Value
Publication number	US-11598208-B2
Application number	US-202117516292-A
Country	US
Kind code	B2
Filing date	Nov 1, 2021
Priority date	Sep 23, 2016
Publication date	Mar 7, 2023
Grant date	Mar 7, 2023

Abstract

A machine for excavating rock includes a frame, a cutting device, and a boom. The cutting device includes a cutting disc having a cutting edge, and the cutting disc is rotatable about a cutting device axis. The boom supports the cutting device and includes a first end, a second end, and a boom axis substantially parallel to the cutting device axis. The boom further includes a first portion and a second portion. The first portion is coupled to the frame for rotation about a first pivot axis between a raised position and a lowered position. The second portion is coupled to the cutting device, and the second portion is pivotable about a second pivot axis between a raised position and a lowered position.

First claim

What is claimed is:

1. A machine for excavating rock, the machine comprising:
a frame;
a cutting device including a shaft and a cutting element having a cutting edge, the cutting device further includes an exciter shaft and an eccentric mass positioned adjacent an end of the shaft and rotating about an exciter axis, rotation of the exciter shaft and eccentric mass inducing an oscillation of the shaft and the cutting element, the shaft includes a first portion and a second portion connected to an end of the first portion, the first portion rotatable about a shaft axis, the second portion extending along a second axis that is oblique with respect to the shaft axis, the cutting element being supported on the second portion for rotation about a cutting device axis; and
a boom supporting the cutting device, the boom including a first end, a second end, and a boom axis substantially parallel to the cutting device axis, the boom further including a first portion and a second portion, the first portion of the boom coupled to the frame for rotation about a first pivot axis between a raised position and a lowered position, the second portion of the boom coupled to the cutting device, the second portion of the boom pivotable about a second pivot axis between a raised position and a lowered position.

2. The machine of claim 1 , wherein the first portion of the boom includes a base portion and an intermediate portion coupled between the base portion and the second portion of the boom, the intermediate portion pivotable relative to the base portion about a third pivot axis oriented at an oblique angle relative to the first pivot axis.

3. The machine of claim 1 , further comprising a chassis including a traction drive device for engaging a support surface, the chassis including a forward end and a rear end, and a chassis axis extending therebetween, the frame supported on the chassis for movement in a direction parallel to the chassis axis.

4. The machine of claim 1 , further comprising a material handling device including a shovel receiving cut material from a space forward of the frame with respect to a direction of advance, the shovel including a leading edge, wherein the cutting device is capable of being positioned adjacent the leading edge of the shovel.

5. The machine of claim 1 , wherein the first end of the boom is coupled to the frame by a slew coupling pivotable about an axis to move the boom in a lateral direction.

6. The machine of claim 1 , wherein the first portion of the boom is pivotable about the first pivot axis through an angle of at least thirty degrees, wherein the second portion of the boom is pivotable about the second pivot axis through an angle of at least 45 degrees and is pivotable independent of the pivoting movement of the first portion of the boom.

7. The machine of claim 1 , wherein the shaft is supported on the second portion of the boom for rotation about the shaft axis, wherein the boom axis intersects the first pivot axis and the second pivot axis, the boom axis aligned with the shaft axis when the boom is in a straight configuration.

8. The machine of claim 1 , further comprising a first actuator for pivoting the boom about the first pivot axis and a second actuator for pivoting the second portion of the boom about the second pivot axis, wherein the second actuator can be controlled to pivot the second portion of the boom when the first actuator reaches a maximum or a minimum extension.

9. The machine of claim 1 , further comprising a first actuator for pivoting the boom about the first pivot axis and a second actuator for pivoting the second portion of the boom about the second pivot axis, wherein the first actuator and the second actuator include fluid cylinders for biasing the first portion of the boom and the second portion of the boom against reaction forces exerted on the boom by the rock.

10. The machine of claim 1 , wherein the cutting element is supported for free rotation relative to the shaft about the cutting device axis.

11. The machine of claim 1 , wherein the cutting device further includes a motor for driving the first portion of the shaft to rotate about the shaft axis.

Assignees

• Joy Global Underground Mining Llc

Inventors

• Lugg Peter A
• Keech Geoffrey W
• Reeves Stuart
• Daher Nagy

Classifications

• E21C35/00

  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 title

• E21B44/02

  Automatic control of the tool feed ({E21B44/005,} E21B44/10 take precedence) · CPC title

• E21C25/16

  Machines slitting solely by one or more rotating saws, cutting discs, or wheels · CPC title

• E21C31/00

  Driving means incorporated in machines for slitting or completely freeing the mineral from the seam · CPC title

• E21C25/18

  Saws; Discs; Wheels · CPC title