| 摘要 |
The invention relates to a sleeper screw driving machine (1) with hydraulic transmission comprising at least one first sleeper screw driving head (2) and one second sleeper screw driving head (3), said first (2) and second (3) sleeper screw driving heads being intended to screw in or unscrew railway sleeper screws (102), at least a first (4) and a second (5) hydraulic motor suited to the rotational drive of the first sleeper screw driving head (2) and of the second sleeper screw driving head (3) respectively, a control unit (12) configured to control the first (4) and second (5) hydraulic motors, and at least one hydraulic pump (8, 9) intended to supply hydraulic power to the first (4) and second (5) hydraulic motors, characterized in that the sleeper screw driving machine (1) additionally comprises at least one hydraulic distribution member (10) driven by the control unit (12) so that, in a first configuration, it hydraulically connects the first (4) and second (5) hydraulic motors in series in a hydraulic circuit and, in a second configuration, it hydraulically uncouples the first (4) and second (5) hydraulic motors in the hydraulic circuit. |
