FIELD: mining industry.
SUBSTANCE: section has ceiling with extending shield, base and two supporting beams (upper and lower) with drilling bodies, mounted in parallel to each other and connected to hydraulic posts, mounted perpendicularly to them and to bed, upper and lower fence elements and hydraulic displacement jacks. Fence elements are interconnected with possible angular displacements by transverse beam and mounted at sharp angle to each other, in inner space of which hydraulic posts are mounted. Their rods are jointly connected to upper fence element, and cylinders - to lower one. Each support beam is mounted lower than appropriate hydraulic post along line of bed fall, and connected to it at a tangent, along beam axis with possible free displacements, along fall line - rigidly, and along perpendicular to bed - with possible limited relative displacements. Dump end of support beam by means of traction is jointly connected to transverse beam. Displacement jack is by one end jointly connected to outer side surface of lower support beam, and by other one - to transverse beam of adjacent support section, mounted lower along bed fall.
EFFECT: higher efficiency.
2 dwg
