FIELD: mining.
SUBSTANCE: device for determining the cutting line of the extraction system during mining, namely of coal plough system, includes movable conveyor consisting of individual pan elements, each of which has conveyor pan having upper conveyor branch and lower conveyor branch and guide section installed on the front side of mining face, as guide device for extraction machine, and having at least one optic sensor containing sensor head arranged in sensor carrier and capable of being pressed by means of at least one pressure device to boundary surface between coal and bottom to be found. At that, multiple pan elements distributed throughout the length of conveyor are made as sensor pans equipped with protected cavity open to bottom, in which sensor carrier is located or can be located with possibility of its being removed together with sensor head.
EFFECT: reliable detection of boundary surface between coal and bottom with improved operating reliability and minimised susceptibility to wear.
35 cl, 4 dwg
