MINING MACHINE (VERSIONS) Russian patent published in 2015 - IPC E21C25/16 

FIELD: mining.

SUBSTANCE: group of inventions relates to the mining machines to excavate rock. The mining machine to excavate the rock comprises a platform; a boom mounted on the platform and comprising a base part, a rotating part pivotally attached to the base part, and a bearing bracket of the cutter head, and the said base part comprises two horizontal main plates spaced apart, and the said rotating part comprises two spaced apart support plates pivotally attached to the base part with the ability of rotation relative to it around the support pivotally mounted and extending between two spaced apart horizontal main plates of the base part, and two spaced apart rotating plates pivotally attached by the support rod extending between the rotating plates to the support plates with the ability of rotation relative to them, at that the bearing bracket of the cutter head is attached to the rotating plates; the disc cutter adapted for interaction with the developed material and mounted on the said bearing bracket of the cutter head by means of the disc cutter assembly imparting the disc cutter with the eccentric movement, and the said disc cutter is inserted by the boom into the developed material; two spaced apart hydraulic cylinders extending between the said base part and the rotating part and providing rotation of the rotating plates relative to the base part; a hydraulic rotary cylinder mounted on the lower support plate and providing rotation of the rotating plates relative of the support plates.

EFFECT: increasing the efficiency of operation of the mining machine, providing the boom rotation at an angle greater than 180 degrees.

16 cl, 20 dwg