| 摘要 |
1. The shearing unit of the longwall coal shearer is equipped with shearing cutters, mounted in cutter fixtures. The cutter edges are spaced on the side surface of the rotating block, along the shearing lines with determined shearing scale, along at least one helix with a high winding angle, winding in the opposite direction to the helix of the worm. Unique characteristics: The edges (1) of the shearing cutters, that enter into contact with the mined rock, create ordered groups, located along the helical lines (2) with a small winding angle. 2. The method of shearing rocks with the shearing unit - unique characteristics: Rock shears are made with the edges (1) of the cutters in ordered groups, beginning with the edges (1) of the shearing cutters that are closest to the front of the mined heading I-I, and ending with the edges (1) of the shearing cutters that are closest to the front of the newly mined heading II-II. |
