| 摘要 |
The invention relates to an impact-attenuating device (1) connected to a vehicle (2), especially a lorry. The impact attenuator (1) comprises a front part (3), an attenuating part (4), a rear part (5), and an extension device (6). The front part (3) is connected to the vehicle (2) in order to, during a collision into the impact attenuator; transfer the forces from the attenuato r to the vehicle. The front part (3) comprises two wheels (31), with a pivot function, suspension (32), and a traffic routing board (9). Between the fron t part (2) and the attenuating part (4) is the extension device (6) arranged. The extension device (6) has a transport position and an operation position. In the transport position the extension device (6) is in its extended positi on and the attenuating device (4) is moved away from the front part (3). The extension device (6) is connected to the attenuating device (4) via a horizontal joint (63). In the transport position the extension device is hanging freely between the rear part (5) and the front part (3).
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