COMBINE FOR SELECTIVE CONCAVITY OF THIN STRATUMS OF MINERALS Russian patent published in 2009 - IPC E21C27/02 E21C25/06 E21C31/04 

FIELD: mining.

SUBSTANCE: invention relates to mechanisation facilities for underground selective concavity of thin predominately potassic layers by treating combines. Combine for selective concavity of thin layers of minerals includes body, at ends of which there are mounted with ability of rotation in vertical plane two handles, outfitted by agreeably integrated drive and screw with loading shield, and carrier. One of handles allows rigidly fixed on it slider with ability of displacement of it with handle in guide channel of carrier to bottom for value not less than width of screw, diametre of which is not more than output of rock layers of roofing, located at break between bottom and transporter. Screw of other handle is implemented of diametre not less than half of total power of fall rock layers of roofing and mineral.

EFFECT: design simplification of combine, decreasing of its weight and reliability improvement in operation at selective concavity of thin layers with coal-cutting with stone of roofing.

2 dwg