| 摘要 |
<p>The mechanism is used for introducing hydraulic striding support units into an underground mineral-extracting working, esp. a steep front. It (24) consists of a wandering frame, movable along the fornt in stages, and braceable by means of hydraulic props (29). - The frame is equipped with a coupling and/or support device (39,40) for the units (6) being introduced. The mechanism can be provided with its own hydraulic assembly, pref. on the control device (41).</p> |
