| 摘要 |
<p>The machine is used in underground mining a cutting plane, comprising superimposed parts, is increasable or decreasable according to level, and movable both on a floor guide rail on the conveyor and on a second guide rail on the roof. The mutually bendable sections of the guide rail (51) fitted in the seam roof area are attached to height-adjustable retainer devices (5, 5i, 55, 56, 58, 59, 60) supported on the conveyor (3). These can consists of an arm attached to a piston emerging from a sidewall shaped as a cylinder. This ensures reliable plane guidance, regardless of caps' position.</p> |
