| 摘要 |
A coal plough in particular for working in thin beds, co-operating with mechanised wall lining, whose deflected cutting heads, equipped with hydraulically driven active bits, are articulated to the body of the plough, characterised in that the bottom surface (8) of the cutting head (5) ascends from the bits line (13, 16) and (13, 17) to the articulated joint axis (6), and the said surface (8) overlaps the guide (3) to the depth (a) limiting the plough swath to the size (6), which is smaller than the full travel of the mechanised lining flitting actuators.<IMAGE>
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