| 摘要 |
A machine (1) that can be moved on a track (6) during a working advancement (5) comprises a machine frame (2) and has a lifting device (7) with a rotatable, endless conveyor-chain (8) for receiving bulk material (9) of a track bed (10). A discharging device (12) for discharging the received bulk material (9) and a mounting (13) for connecting the lifting device (7) to the machine frame (2) in an articulated manner are provided in the region of an upper conveyor-chain deflection (11). The mounting (13) is movably supported on the machine frame (2) relative to same in a longitudinal direction of the machine, said mounting moving in a displacing motion (20) that is limited by a front working position (18) with respect to a working direction (4) and by a rear end position (19). The mounting is also connected to a buffering element (21) that is fixed on the machine frame (2), said buffering element enabling a displacement of the mounting (13) together with the lifting device (7) to the end position (19) after a target resistance (22) acting against the displacing motion (20) is exceeded. A switch (25) that detects the displacing motion (20) and the exceeding of the target resistance (22) is designed to interrupt the working advancement (5) of the machine (1). |
