| 摘要 |
A tamping unit (7) for track tamping machines for tamping two immediately adjacent sleepers of a track is provided with two pairs, mounted one following the other in the longitudinal direction of the machine on a vertically adjustable tool carrier (14,15), of outer and inner tamping tools (10-13) respectively connected to an eccentric shaft (17,26) by way of a squeeze drive (18,25). One of the outer tamping tools (13) arranged on either side of the inner tamping tools (10,11) with respect to the longitudinal direction of the machine - is designed so as to be independently vertically adjustable relative to the other tamping tools (10,11,12) by means of a separate vertical adjustment drive (20). This independently vertically adjustable outer tamping tool (13) is mounted on a separate, second tool carrier (15) and is connected by way of the squeeze drive (18) to a separate eccentric shaft (17). The associated tool carrier (15) is mounted for vertical adjustment on a vertical guide (19) and is connected for the vertical adjustment to the separate vertical adjustment drive (20).
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