CUTTING DEVICE AND METHOD OF ITS OPERATION Russian patent published in 2015 - IPC E21C25/00 E21C35/08 

FIELD: weapons and ammunition.

SUBSTANCE: invention relates to a device and method for controlling the actions of longwall coal miner in a continuous mine working with tracking its location relative to the plane of the extraction panel of coal. The cutting device comprises a light source and a guide element located on the roof support, to determine the relative angular arrangement between the cutting device and the roof support. The light source, made in the form of a laser, is located on the cutting device and is directed to the roof support. The said guide element is located on the roof support over the cutting device so that when the cutting device is positioned correctly relative to the roof support, the light emitted by the light source falls into a predetermined place relative to the said guide element. When the cutting device is in the wrong position relative to the roof support, the light source will not fall into a predetermined place relative to the guide element. When the cutting device operator detects that light from the source does not fall into the predetermined place relative to the guide element, it adjusts the inclination of the cutting device using hydraulic cylinders, so that the light emitted by the source falls again into the predetermined place relative to the guide element.

EFFECT: increasing productivity of the longwall mining due to proper maintenance of location of the cutting device plane relative to the plane of the extraction panel.

9 cl, 5 dwg