| 摘要 |
<p>A working platform, and a support manipulator with pressure- medium-driven carrier for a support profile carrier bracket, are incorporated in a stage structure for driving forward galleries in mining or tunnelling, travelling on trolleys. The carrier has the discharge pipe at a blower unit attached to it, for backfilling. Its drive is incorporated in the aligning gear controlling the pipe. Swivelling radially across a lengthways movable rotary unit. Each discharge pipe has a blower tube connecting it to a telescopic blow pipe fastened to the stage, providing connection for the end of a fixed lead.</p> |
