SCREEN FOR CUTTING FRAME OF MINING MACHINE Russian patent published in 2022 - IPC E21C25/06 E21C27/24 

FIELD: mining machines.

SUBSTANCE: group of inventions relates to a mining machine and a cutting unit for a mining machine. The mining machine contains a chassis including a first end and a second end. The chassis defines the chassis axis extending between the first end and the second end. The mining machine also has a boom including a first end and a second end. The boom is supported with an ability to move relative to the chassis, the boom being translationally movable in the first direction. The boom is rotatable relative to the chassis between the first position and the second position. The mining machine also includes a cutting head connected to the second end of the boom and rotatably supported relative to the boom. The cutting head is rotatable around the axis of the cutting head. The mining machine also contains a screen that is movably supported relative to the chassis and located between the cutting head and the chassis. The screen is designed to block the material cut from the face of the mine and capture the material in the area between the screen and the face. The screen includes a primary wall and a secondary wall that is movable relative to the primary wall, and the secondary wall is made to extend and retract relative to the primary wall in a direction transverse to the first direction.

EFFECT: blocking of the material cut from the face of the mine, and the capturing the material in the area between the screen and the face.

22 cl, 6 dwg