CA-3025628-C - CUTTING DEVICE WITH WEAR ELEMENTS

Abstract

A cutting device for a cutting head includes a disc, a plurality of cutting elements secured to the disc, and a plurality of wear elements secured to the disc. The disc rotates about an axis of rotation, and the disc includes a peripheral edge. The cutting elements are spaced apart from one another along the peripheral edge of the disc. The wear elements are spaced apart from one another and from the cutting elements.

Inventors

• Joaquim Antonio Soares de Sousa
• Michael Laing

Assignees

• JOY GLOBAL UNDERGROUND MINING LLC

Dates

Publication Date

20260505

Application Date

20170526

Priority Date

20160527

Claims (20)

1. CLAIMS What is claimed is: 1. A cutting device for cutting rock, the cutting device comprising: a disc rotating about an axis of rotation, the disc including a peripheral edge; a plurality of cutting elements secured to the disc, the cutting elements spaced apart from one another along the peripheral edge of the disc; and a plurality of wear elements secured to the disc, the wear elements spaced apart from one another and from the cutting elements, the wear elements having a hardness greater than a hardness of the cutting elements.
2. 2. The cutting device of claim 1, wherein the cutting elements protrude from the disc in a first direction by a first distance, and wherein the wear elements protrude from the disc in the first direction by a second distance less than the first distance.
3. 3. The cutting device of claim 2, wherein the first direction is oriented substantially parallel to the axis of rotation.
4. 4. The cutting device of claim 1, wherein each wear element is positioned between adjacent cutting elements.
5. 5. The cutting device of claim 1, wherein at least some of the wear elements are positioned on the peripheral edge of the disc, each wear element on the peripheral edge being positioned between two adjacent cutting elements.
6. 6. The cutting device of claim 1, wherein at least some of the wear elements are spaced apart from the peripheral edge and positioned in a plane oriented substantially perpendicular to the axis of rotation.
7. 7. The cutting device of claim 1, wherein at least some of the wear elements are spaced apart from the peripheral edge and positioned on a peripheral surf ace extending around the axis of rotation.
8. 8. A cutting head for removing rock from a rock wall, the cutting head comprising: a boom configured to be supported on a frame; a drive mechanism; and a cutting device supported on the boom and driven by the drive mechanism, the cutting device including, a disc rotating about an axis of rotation, the disc including a peripheral edge, a plurality of cutting elements secured to the disc, the cutting elements spaced apart from one another along the peripheral edge of the disc, and a plurality of wear elements secured to the disc, the wear elements spaced apart from one another and from the cutting elements, the wear elements having a hardness greater than a hardness of the cutting elements. 9 1390-4012-3912.1 Date Re9ue/Date Received 2023-12-01
9. 9. The cutting head of claim 8, wherein the cutting elements protrude from a surface of the disc in a first direction by a first distance, and the wear elements protrude from the surface of the disc in the first direction by a second distance less than the first distance.
10. 10. The cutting head of claim 9, wherein the first direction is oriented substantially parallel to the axis of rotation.
11. 11. The cutting head of claim 8, wherein at least some of the wear elements are positioned on the peripheral edge of the disc, each wear element on the peripheral edge being positioned between two adjacent cutting elements.
12. 12. The cutting head of claim 8, wherein at least some of the wear elements are spaced apart from the peripheral edge and positioned in a plane oriented substantially perpendicular to the axis of rotation.
13. 13. The cutting head of claim 8, wherein at least some of the wear elements are spaced apart from the peripheral edge and positioned on a peripheral surface extending around the axis of rotation.
14. 14. A cutting device comprising: a disc rotating about an axis of rotation, the disc including an end surface, a peripheral surface extending around the axis of rotation, and a peripheral edge formed at a junction between the end surface and the peripheral surface; a plurality of cutting elements secured to the disc, the cutting elements spaced apart from one another and disposed on the peripheral edge of the disc; and a plurality of wear elements secured to the disc, the wear elements spaced apart from one another and from the cutting elements, at least some of the wear elements being disposed on the peripheral edge of the disc.
15. 15. The cutting device of claim 14, wherein each of the cutting elements has a first hardness, wherein each of the wear elements has a second hardness greater than the first hardness.
16. 16. The cutting device of claim 14, wherein at least some of the wear elements are positioned on the peripheral edge of the disc in an alternating configuration with the cutting elements.
17. 17. A cutting device comprising: a disc rotating about an axis of rotation, the disc including an end surf ace, a peripheral surface extending around the axis of rotation, and a peripheral edge formed at a junction between the end surface and the peripheral surface; a plurality of cutting elements secured to the disc, the cutting elements disposed on the peripheral edge of the disc and spaced apart from one another; and a plurality of wear elements secured to the disc, the wear elements spaced apart from one another and from the cutting elements, at least some of the wear elements being disposed on at least one of the end surface and the peripheral surface of the disc, wherein each of the wear elements protrudes from the disc in a first direction by a first distance. 1390-4012-3912.1 Date Re9ue/Date Received 2023-12-01
18. 18. The cutting device of claim 17, wherein the first direction is oriented substantially parallel to the axis of rotation.
19. 19. The cutting device of claim 17, wherein the first direction is oriented substantially perpendicular to the axis of rotation.
20. 20. The cutting device of claim 17, wherein each of the cutting elements has a first hardness, and wherein each of the wear elements has a second hardness greater than the first hardness.

Description

CUTTING DEVICE WITH WEAR ELEMENTS CROSS-REFERENCE TO RELATED APPLICATIONS [00011 This application claims the benefit of prior-filed, co-pending U.S. Application No. 62/342,438, filed May 27, 2016, U.S. Application No. 62/342,254, filed May 27, 2016, and U.S. 2017. BACKGROUND Patent Application No. 62/446,799, filed January 16, (0002) The present invention relates to machines for mining or excavation, and more particularly to a cutting mechanism for a machine for mining or excavation. [0003] Mining machines may incorporate cutting discs to engage rock walls in order to cut and remove rock and/or mineral. The cutting disc may be rotated and driven to undercut the rock wall at a narrow angle to generate shearing forces to cause the rock to fracture. Each cutting disc has a plurality of bits or bits positioned on a periphery of the disc. SUMMARY (0004] In one aspect, a cutting device for cutting rock, a plurality of cutting elements, and a plurality of wear elements. The disc rotates about an axis of rotation and includes a peripheral edge. The plurality of cutting elements are secured to the disc, and are spaced apart from one another along the peripheral edge of the disc. The plurality of wear elements are secured to the disc, and the wear elements are spaced apart from one another and from the cutting elements. [0005) In another aspect, a cutting head for removing rock from a rock wall includes a boom configured to be supported on a frame, a drive mechanism, and a cutting device supported on the boom and driven by the drive mechanism. The cutting device includes a disc, a plurality of cutting elements, and a plurality of wear elements. The disc rotates about an axis of rotation and includes a peripheral edge. The plurality of cutting elements are secured to the disc and are spaced apart from one another along the peripheral edge of the disc. The plurality of wear Date Reyue/Date Received2023-12-01 elements are secured to the disc, and the wear elements are spaced apart from one another and from the cutting elements. [0006] In yet another aspect, s cutting device includes a disc, a plurality of cutting elements, and a plurality of wear elements. The disc rotates about an axis of rotation and the disc includes a peripheral edge. The plurality of cutting elements are secured to the disc, and the cutting elements are spaced apart from one another along the peripheral edge of the disc. Each of the cutting elements protrudes from the disc in a first direction by a first distance. The plurality of wear elements are secured to the disc, and the wear elements are spaced apart from one another and from the cutting elements. Each of the wear elements protrude from the disc in the first direction by a second distance less than the first distance. [0007] Other features and aspects will become apparent by consideration of the following detailed description and accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS [0008] FIG. I is a perspective view of a mining machine. [0009] FIG. 2 is a perspective view of a cutting head of a mining machine. [0010] FIG. 2A is a cross-sectional view of the cutting head of FIG. 2, viewed along section 2A--2A. [0011] FIG. 3 is a perspective view of a cross section of a cutting disc for the cutting head of FIG. 2, viewed along section 3--3. [0012] FIG. 4 is a side view of a portion of the cutting disc of FIG. 3. FIG. 5 is a plan view of a portion of the cutting disc of FIG. 3. [0014] FIG. 6 is a cross-sectional view of the cutting disc of FIG. 3, viewed along section 6--6 in FIG. 4. [0015] FIG. 7 is a perspective view of a wear bit. 2 (0016] FIG. 8 is a perspective view of a cutting bit. [0017) FIG. 9 is a perspective view of a cross section of a cutting disc according to another embodiment. [0018] FIG. 10 is a side view of a portion of the cutting disc of FIG. 9. [0019] FIG. 11 is a plan view of a portion of the cutting disc of FIG. 9. [0020] FIG. 12 is an enlarged cross-section of the cutting disc of FIG. 11 viewed along section 12--12. [0021] FIG. 13 is a perspective view of a cross section of a cutting disc according to another embodiment. [0022] FIG. 14 is a side view of a portion of the cutting disc of FIG. 13. [0023] Before any embodiments are explained in detail, it is to be understood that the invention is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the following drawings. The invention is capable of other embodiments and of being practiced or of being carried out in various ways. Also, it is to be understood that the phraseology and terminology used herein is for the purpose of description and should not be regarded as limiting. The use of "including," "comprising" or "having" and variations thereof herein is meant to encompass the items listed thereafter and equivalents thereof as well as additional items. The terms "mounted," "connected" and "coupled" are used broadly a