公开(公告)号：US11047235B2

公开(公告)日：2021-06-29

申请号：US16606193

申请日：2018-03-30

Applicant: SANDVIK INTELLECTUAL PROPERTY AB

Inventor： Luis Garcia ,  Guenther Staber

IPC: E21D9/10 ,  E21C27/12

Abstract: A cutting head for cutting apparatus suitable for creating tunnels or subterranean roadways and the like. The cutting head includes a rotatable cutting head body and a plurality of cutting units mounted thereon. The cutting units include at least first and second different types of cutting units. The first type of cutting unit has a first rotatable cutter having a first disc body and a first arrangement of buttons for abrading rock. The first buttons are mounted in a radially peripheral portion of the disc body and protrude outwardly therefrom. The second type of cutting unit has a second rotatable cutter having a second disc body and a second arrangement of buttons. The second buttons are mounted in a radially peripheral portion of the disc body and protrude outwardly therefrom. The different types of cutting units differ from one another by at least the arrangements of their buttons.

公开(公告)号：US11092009B2

公开(公告)日：2021-08-17

申请号：US16607500

申请日：2018-03-30

Applicant: SANDVIK INTELLECTUAL PROPERTY AB

Inventor： Luis Garcia ,  Guenther Staber

IPC: E21C25/18 ,  E21D9/10 ,  E21D9/11

Abstract: A cutter for a cutting unit used in cutting apparatus suitable for creating tunnels or subterranean roadways. The cutter includes a disc body having an underside, an upper side arranged substantially opposite to the underside, and a radially peripheral part. A plurality of buttons for abrading rock are mounted in the radially peripheral part of the disc body and protrude outwardly therefrom to engage rock during an undercutting operation, wherein at least some of the buttons have a cutting part having a dome-shaped cutting surface.

公开(公告)号：US11203931B2

公开(公告)日：2021-12-21

申请号：US16606189

申请日：2018-03-30

Applicant: SANDVIK INTELLECTUAL PROPERTY AB

Inventor： Luis Garcia ,  Guenther Staber ,  Erika Huetter

IPC: E21C25/18 ,  E21D9/10

Abstract: A cutting apparatus includes a support structure and first and second cutting assemblies. Each cutting assembly includes a rotatable cutting head and a mounting assembly for movably attaching the cutting head to the support structure. The cutting head is movable about a first pivot axis of the mounting assembly in a sideways direction relative to the support structure, and about a second pivot axis in an upwards-downwards direction. Each cutting head includes a plurality of cutting units, which each have a rotatable shaft and a cutter mounted thereon. The cutter includes a disc body and a plurality of buttons mounted in a radially peripheral portion of the disc body. At least some of the buttons have a central longitudinal axis that subtends an angle α to a reference axis, which extends perpendicularly outwards from an axis of the shaft, the angle α being ≥to 20° and ≤to 34°.