| 摘要 |
PCT No. PCT/EP92/00907 Sec. 371 Date Oct. 15, 1993 Sec. 102(e) Date Oct. 15, 1993 PCT Filed Apr. 24, 1992 PCT Pub. No. WO92/19837 PCT Pub. Date Nov. 12, 1992.The ground-drilling device comprises an elongated mount (10) comprising a track (11) for guiding a main carriage (25). The drive means for the main carriage (25) consists of a piston-cylinder unit (27) which extends below the track (11) under the main carriage and whose cylinder (28) is supported on the mount (10) via a link (29). The piston rod (30) engages the fore end of the main carriage (25). The piston-cylinder unit (27) does not project or only slightly projects beyond the rearward end of the mount (10). |
