Impact protection device for rail vehicles
AssigneeSiemens Krauss-Maffei Lokomotiven GmbH
InventorSieghard Schneider
Life of this patent
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Abstract
The invention relates to an impact protection device for rail vehicles, comprising one or more energy absorbing elements (25) mounted on the main frame of the rail vehicle and having a box-like structure. The invention is characterized in that from the box end in the direction of the main frame (29) a reverse-drawn recess (20) and a buffer rod (21) are provided and the buffer rod can be displaced along the interior wall of the reverse-drawn recess (20). Elastically deformable energy absorbing elements (32) such as a friction spring (33) or a hydraulic capsule (34) are mounted in the hollow space formed by the buffer rod (21) and the reverse-drawn recess (20). The invention provides a greater active length for energy absorption in case of impact than a sequential box arrangement and a standard sleeve buffer.
Claims14
A crash guard device for a rail vehicle, comprising:
- an energy dissipating element mounted on a main frame of the rail vehicle, the energy dissipating element being boxed-shaped and enlarging steadily in the direction of the main frame;
- and
- a buffer including a buffer plunger having an integrally molded buffer plate, a buffer box and an elastic energy absorbing element arranged between the buffer plunger and the buffer box, the buffer plunger configured to dip in the buffer box, the buffer box being an insertion area of the energy dissipating element and located entirely forward of the main frame, a recess being provided on the main frame for passage of the buffer box so that the buffer box remains outside of the recess until the energy dissipating element collapses toward the main frame and the buffer box passes into the recess.
Dependencies are inferred from the claim text.