| 摘要 |
<p>The invention relates to a device for drilling anchor holes in underground mining, comprising a frame (1) that forms parallel displacement guides (2) for both a sliding carriage (3) that can be supported on the surface (9) to be drilled and a drilling device (4), the feed drive (10) of which is supported on the sliding carriage (3). In order to be able to determine the drill hole depth accurately, the invention proposes a magnetostrictive measuring device having sensing elements (17) that run along the displacement guides (2) and are connected to an evaluating circuit, and having magnetic position encoders (18) that are associated with the sliding carriage (3) and the drilling device (4) and co-operate with the relevant sensing element (17).</p> |
