| 摘要 |
A horizontal directional drilling machine including a rod transfer member having a rod retainer that is movable between a first position and a second position. When the rod retainer is in the first position, the rod retainer is adapted to retain a pipe on the transfer member. By contrast, when the rod retainer is in the second position, a rod can be moved from the transfer member without being obstructed by the rod retainer. A sensor is provided for detecting when a pipe is positioned on the pipe transfer member, and for causing the rod retainer to automatically move from the second position to the first position when a rod is detected.
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