TUNNELING MACHINE WITH DEVICE FOR CUTTING PROTRUSIONS Russian patent published in 2022 - IPC E21C27/24 E21C27/10 E21D9/00 

FIELD: mining.

SUBSTANCE: group of inventions relates to a tunneling machine for cutting mines and tunnels. Heading machine comprises a movement mechanism and a cutting frame, which supports first and second rotary cutting heads having corresponding rotational axes extending in the longitudinal direction of said combine, first cutting roller supported on cutting frame and located behind said cutting heads, additional cutting means supported on the above cutting frame and located with possibility of cutting off the protrusion of untouched material left on the side wall. Preferably, the first and second rotary cutting heads are located so that round sections of the corresponding cutting profiles overlap each other. At that, the first cutting roller has an axis of rotation, which passes horizontally and transversely to the specified longitudinal direction of the combine, note here that said axis passes at a distance from cutting head rotational axes. First cutting roller and the additional cutting device are located on the same upper or lower side relative to the axis of rotation of the cutting heads.

EFFECT: effective removal of wedges or protrusions on the side wall.

17 cl, 12 dwg