MILLING DEVICE Russian patent published in 2019 - IPC E21C27/24 E21B25/06 

FIELD: soil or rock drilling; mining.

SUBSTANCE: group of inventions relates to the field of underground or open development, as well as to road or construction equipment. Milling machine comprises movable support frame, at least one support installed on movable support frame, and at least one milling device installed on at least one support. Milling device comprises a first plurality of cutting discs mounted on a first circumference of the milling device and capable of rotating about a first axis defining a longitudinal direction along which the milling device moves, and a second plurality of cutting discs mounted on the second circumference of the milling device and capable of rotating about a second axis extending parallel to the first axis. At that, the second set of cutting disks is displaced from the first set of cutting disks in longitudinal direction, and the second circle is located relative to the first circle so that at least one of the second plurality of cutting disks projects outward in radial direction from the first plurality of cutting disks. At that, the milling device is symmetrical relative to the transverse direction passing perpendicular to the longitudinal direction through the center of the milling device.

EFFECT: technical result is possibility of adjustment under various conditions on milling section.

15 cl, 6 dwg