| 摘要 |
The device has a crane with which it is possible to unload (or load) objects such as rails from the charging platform of a railway truck on to the ballast surface at the side of the line constituting the railway track in operation, without in any way deviating from the clearance gauge laid down in railway regulations. This is achieved through the use of a vertical turret (2) at the top of which is placed, in a way whereby it is able to rotate around the vertical axis thereof, a central module (4) that comprises a first arm (5) placed horizontally and extensible horizontally between two limit positions under the action of first hydraulic operating means (6); to the free extremity of the said first arm is connected a second arm (7) placed vertically and extensible vertically between the two limit positions for loading the rail on to the truck and for unloading the rail on to the ballast, under the action of second hydraulic operating means (8-9); the said second arm being provided, in the extremity of the free extremity thereof, with a hooking element (10).
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