| 摘要 |
<p>Track-tamping machine (1) for compacting the ballast beneath a plurality of sleepers (S1, S2, etc.) of a track, having tamping tools (12-15), mounted on the tamping-tool frame or an intermediate carrier (18), and vertical-adjustment, vibration and feed drives (22; 21; 19, 20) assigned to said tamping tools. In each case two tamping tools (12, 13; 14, 15), which can be adjusted with respect to each other in the track longitudinal direction and can dip together into a space (F1, F2) between the sleepers, form an expanding tamping-tool pair (16, 17). Only two such expanding tamping-tool pairs or groups (16, 17), for the purposes of dipping into two directly adjacent spaces (F1, F2) formed between sleepers, are arranged one behind the other in the longitudinal direction of the track and form a twin expanding tamping assembly (7). Specific tamping is thus made easier, even when the distances between sleepers vary. The two expanding tamping-tool pairs or groups are mounted on a common tamping-tool carrier (18) and are connected to a drive (22) for common vertical adjustment. <IMAGE></p> |
