| 摘要 |
With cutting machines, having their loading means (7) adapted to be lowered below the running surfaces (11) of the crawlers (2) of the drift advancing machine, there results an erroneous position of the machine on account of lifting the front end of the machine during such lowering movement of the loading means (7). For establishing the correct position of the cutting tool (6) and of the cutting arm (5), corrective signal are used which are released by angular position transmitters (16 or 17, respectively). By means of these angular position transmitters (16 or 17, respectively), the swivelling angle of the loading means (7) relative to the frame (1) or the swivelling angle theta of the operating cylinder (9) of the loading means (7) relative to the frame (1), respectively, is measured and the required corrective signal for the angle advance DELTA alpha is calculated (FIG. 3).
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