EP1306281A1 - Anti climbing device for railway vehicles with side buffers - Google Patents

Abstract

Ribs (2) on a rib plate (3) have buffers (1) from above and below that can be pressed in as far as the shoulder area of the ribs if a limited level of force is used. Using force occurring during normal operation a spring device (4) in a buffer permits at most one lift, at which the ribs still do not make contact with those for a rail vehicle coupled up and fitted out in a similar way.

Description

The invention relates to a device for preventing mutual vertical Sliding of the front surfaces (climbing) from equipped with buffers Rail vehicles in frontal collisions using horizontal ones Ribs.

Since rail vehicles generally for the formation of longer train groups and thus designed to transmit the resulting high longitudinal forces are in the height range of pulling and pushing devices reinforced bases. Depending on the design of the vehicle, one combines Underframe a large part of the strength of the vehicle structure in yourself. If such a vertical offset of the frontal collisions Underframes occur that they can slide over one another (climbing or overbuffering), only the often much less stable ones are left Superstructures of the vehicles available to reduce the collision energy, which drastically aggravates the consequences of the accident.

The use of panels with horizontal ribs on the front of rail vehicles is basically a common approach to preventing climbing. The prerequisite for this is that these plates mutually so far can approximate that their ribs engage and so vertical forces can transmit. However, in normal operation of coupled vehicles must get caught because of the risk of impermissible wheel relief the ribs are excluded. For vehicles with central buffer coupling there are solutions for this with a specially coordinated spring characteristic, mostly realized by separate spring stages. The first stage only allows the strokes required for operation without the risk of the ribs getting caught. Subsequent elements enable a defined one to be exceeded Responsiveness that is higher than the maximum operational force, further Stroke until the ribs come into contact.

For vehicles with middle buffer clutches that are in mixed operation with vehicles traffic with side buffers are often in the nominal position for Side baffle baffles arranged to with occasional touches Side buffers to avoid damage. Common practice is therefore to protect against climbing simply in connection with the coupling characteristics described above by arranging ribs on the baffle plates. The disadvantage of most of the devices implemented is that they only work during a collision Establish positive locking with similarly equipped vehicles can, but not with normal page buffers with a smooth surface, which is also lubricated. A further development that has this disadvantage has been eliminated in the EU-funded BRITE-EURAM research project "Safetrain" successfully tested. Here the baffle plate with ribs was in the height is increased so that it hits the buffer plate above and below survives and is pressed by this in the middle so that the Ribs can enclose the edge of the buffer plate in a form-fitting manner.

The magazine ZEV + DET Glas. Ann. 119 (1995) page 305 - see in particular Figures 5 and 6 - a rail vehicle (TGV DUPLEX) can be seen, in which a powered head car and an adjacent middle car cannot be separated operationally by a screw coupling and special Page buffers are coupled together. Through one of these special designs catcher associated with buffers becomes overbuffering and This prevents the connected car bodies from climbing up. The one on the middle car attached safety gear already enclose in the regular Operation the buffer plate of the head carriage, the height of which is therefore opposite the standard version is reduced. Due to the asymmetrical arrangement and the required special dimensions, this principle is not for free in-line vehicles applicable.

Based on the functional principle implemented with medium buffer couplings the invention is based on the task of climbing vehicles with common side buffers, which are used for operational pressure transmission between the individual vehicles are safe to avoid.

This object is achieved in that the ribs of the Rib plate enclose the buffers from above and below, the buffers at defines a limited level of force at least up to the base of the ribs are impressible.

Advantageous embodiments of the invention are specified in the subclaims.

Fig. 1

den Frontbereich eines Schienenfahrzeuges im Schnitt nach der Linie A - A in Fig. 2, in unbelasteter Ausgangsstellung,

Fig. 2

die Draufsicht zu Fig. 1,

Fig. 3

die Vorderansicht zu Fig. 1 und 2,

Fig. 4

einen der Fig. 1 entsprechenden Schnitt, jedoch in einer Stellung am Ende eines betrieblichen Pufferhubes,

Fig. 5

einen der Fig. 1 entsprechenden Schnitt, bei dem der Puffer eine voll hinter die Rippenplatte zurückgeschobene Stellung einnimmt,

Fig. 6

eine der Fig. 3 entsprechende Vorderansicht mit einer zusätzlichen, seitlich angeordneten Rippenplatte.

Furthermore, the invention is described in more detail using an exemplary embodiment which is shown in principle in the drawing. Show it

Fig. 1

the front area of a rail vehicle in section along the line A - A in Fig. 2, in the unloaded starting position,

Fig. 2

the top view of Fig. 1,

Fig. 3

the front view of FIGS. 1 and 2,

Fig. 4

1 corresponding section, but in a position at the end of an operational buffer stroke,

Fig. 5

1, in which the buffer assumes a position fully pushed back behind the ribbed plate,

Fig. 6

3 corresponding front view with an additional, laterally arranged rib plate.

The rib plate 3 on which the ribs 2 are arranged is horizontally so divided that the page buffer 1 between the upper part and the lower Can immerse part of the ribbed plate 3. By limiting the indentation forces of the buffer by suitable reversible and possibly also irreversible energy absorbent elements can be ensured that initially the plate of the buffer 1 can be pushed back so far that it is in one level with the attachment surface of the ribs 2 (Fig. 5). With similarly equipped Vehicles or those with a continuous ribbed plate on the same Position becomes the vertical force to prevent over-climbing transfer the engagement of the ribs 2. Normal side buffers of vehicles without the climbing protection device according to the invention can after engagement of the buffer plate 1 in the climbing protection device between the ribs Immerse 2.

Prerequisite for the function of the device both in normal operation as well as in the case of accidents is to ensure the appropriate sequence of strokes analogous to the existing solutions for medium buffer couplings. Accordingly can also use similar construction elements for their technical Implementation to be used. So it is obvious to split up into a stroke that prevents the rib plates from getting caught in normal operation and further deformability after exceeding the maximum operational expected force. This further deformation can be defined on a Force level take place or given the relatively short path through easy tear off, d. H. after overcoming an initial peak force largely powerless. This functionality is not specified in the drawings of details represented by two mutually movable parts, in which it is the sleeve of the reversible spring device 4 and the mounting flange 5 acts.

Fig. 4 shows the position at the end of the operating stroke, in which the rib plates 3 are still behind the front surface of the buffer plate.

5 shows the buffer plate fully pushed back behind the rib plate 3.

As can be seen from FIG. 6, the climbing protection function can be additionally secured the ribs 2 an additional rib plate 7 on the side of the buffer plate to be ordered.

Since climbing protection devices are usually part of a more extensive crash-friendly Design of the vehicle can be used and the possible Energy consumption through the relatively small strokes within the described Device remains limited, is a combination with a downstream Crumple zone cheap. This can either be part of the car body be or - as shown - together with the buffer and the Climbing protection device as a superior, easily exchangeable unit 6 for Be trained energy consumption.

List of reference numbers

1

buffer

2

rib

3

rib plate

4

spring apparatus

5

mounting flange

6

Unit for energy consumption

7

Side rib plate

Claims (7)

Device for preventing the vertical sliding of the front surfaces (Velcro) of rail vehicles equipped with buffers (1) in frontal collisions using horizontal ribs (2), characterized in that the ribs (2) of the ribbed plate (3) the buffers (1) enclose from above and below, the buffers (1) being able to be pressed in at a defined level of force at least up to the shoulder surface of the ribs (2). Apparatus according to claim 1, characterized in that the spring device (4) of the buffer (1) permits at most one stroke at the forces occurring in normal operation, at which the ribs (2) do not yet touch those of a coupled, similarly equipped vehicle. Apparatus according to claim 2, characterized in that the limitation of the buffer stroke is realized by dividing the entire stroke into several elements connected in series, with only those elements moving during the operating forces whose strokes do not exceed the permissible value in total. Device according to one of claims 1 to 3, characterized in that the structure behind the ribbed plates (3) is designed as a crumple zone in such a way that it deforms in front of the remaining shell of the car body. Apparatus according to claim 4, characterized in that the buffer (1) is fastened towards the end of the vehicle in front of the deformable part of the crumple zone in such a way that the fastening point is moved relative to the rest of the body when the crumple zone is deformed. Device according to claim 4 or 5, characterized in that the climbing protection device and the crumple zone are part of a separately manufactured structure which can be easily replaced after an accident. Device according to one of claims 1 to 6, characterized in that rib plates (7) are also arranged on the side of the buffer plate.

Images