| 摘要 |
In a coal plough with at least two adjustable plough tool groups (A, B) at a longitudinal distance from one another, which are to be drawn and guided along a conveyor (11) and are in the active or passive position as a function of the plough advance direction, the plough tool groups (A, B) are directed exclusively towards one another, and the leading plough tool group (A) is in the passive position and the trailing plough tool group (B) is in the active position. <IMAGE>
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