EP3155173B1 - Barrier element of a vehicle restraint system - Google Patents

Description

The invention relates to a baffle element of a vehicle restraint system according to the preamble of claim 1.

Conventional baffle elements include a concrete body and tension members with coupling members to form a through-vehicle restraint system from the prefabricated baffle members. In the formation of the vehicle restraint system a plurality of Leitwandelemente are lined up frontally and connected to each other. The vehicle restraint system serves to restrain impacting vehicles, wherein the coupled traction elements form a continuous drawstring, which prevent the vehicle from breaking through the vehicle restraint system. Here, the tension elements and the coupling parts are welded together in conventional baffle elements.

The disadvantage of this is that particularly high demands are placed on this welded joint, as the health of the vehicle occupant depends to a great extent on this reliable functioning when a vehicle collides. Particular care should be taken to ensure that failure of this weld is not caused by a notch effect. Often the tension elements and the coupling parts are formed from materials of different quality and / or different surface finish, whereby the formation of a reliable welded connection is very expensive.

From the GB 2 219 332 A is a baffle element of a vehicle restraint system with a concrete body, coupling elements and tension elements known. In this case, the coupling element has a passage opening arranged in the concrete body, through which a reinforcing bar bent in the shape of a hook at the end is carried out.

From the US 5 046 884 A is also a baffle element of a vehicle restraint system with a concrete body, coupling elements and a tension element known. The tension member has at one end a plurality of open brackets, which arranged in the concrete body flange of the as Embrace I-carrier trained coupling element, and hold such a positive fit.

The object of the invention is therefore to provide a baffle element of a vehicle restraint system of the type mentioned, with which the mentioned disadvantages can be avoided, which can be easily formed and yet ensures a reliable and reliable function.

This is achieved by the features of claim 1 according to the invention.

This results in the advantage that the baffle element can be made simple yet reliable, since no complex welded connection is more necessary, the risk of a defective weld can be excluded. Furthermore, in the choice of materials the Coupling and the at least one tension element are not paid attention to a good weldability. By the positive connection, a reliable connection of the at least one tension element can be achieved with the at least one coupling part, which is simple and reliable, the force introduction between the tension element and the coupling part can be well specified, and in particular can be made over a large area. Furthermore, since the tension member is surrounded by the concrete body, there is no danger of the positive connection becoming loose over time.

The subclaims relate to further advantageous embodiments of the invention.

It is hereby expressly referred to the wording of the claims, whereby the claims at this point are incorporated by reference into the description and are considered to be reproduced verbatim.

• Fig. 1 einen Teil einer ersten bevorzugten Ausführungsform eines Leitwandelementes in axonometrischer Darstellung;
• Fig. 2 einen Teil einer zweiten bevorzugten Ausführungsform eines Leitwandelementes in axonometrischer Darstellung;
• Fig. 3 einen Teil einer dritten bevorzugten Ausführungsform eines Leitwandelementes in axonometrischer Darstellung;
• Fig. 4 einen Teil einer vierten bevorzugten Ausführungsform eines Leitwandelementes in axonometrischer Darstellung; und
• Fig. 5 die vierte bevorzugte Ausführungsform eines Leitwandelementes als idealisierte Darstellung in Seitenansicht.

The invention will be described in more detail with reference to the accompanying drawings, in which only preferred embodiments are shown by way of example. Showing:

• Fig. 1 a part of a first preferred embodiment of a baffle element in axonometric representation;
• Fig. 2 a part of a second preferred embodiment of a Leitwandelementes in axonometric representation;
• Fig. 3 a part of a third preferred embodiment of a Leitwandelementes in axonometric representation;
• Fig. 4 a part of a fourth preferred embodiment of a Leitwandelementes in axonometric representation; and
• Fig. 5 the fourth preferred embodiment of a baffle element as an idealized representation in side view.

The Fig. 1 to 5 show at least parts of preferred embodiments of a baffle element 6 of a vehicle restraint system comprising a concrete body 7, wherein at least one tension element 1 in the concrete body. 7 is arranged, wherein the at least one tension element 1 with at least one, at least partially projecting from the concrete body 7, coupling part 21,22 is connected.

The baffle element 6 is a part of a vehicle rear-end system, wherein the baffle element 6 can be designed in particular as a finished part, preferably as a precast concrete part, which is preferably prefabricated and can then be brought to the place of use. The baffle element 6 may be designed in particular for the arrangement next to a road or between two lanes.

The baffle element 6 has a concrete body 7, which is intended to receive the impact pulse. The concrete body 7 may consist of concrete or a concrete mixture. The concrete body 7 may in this case have a contact surface 71 on the underside. Furthermore, it can be provided that the concrete body 7 has a New Jersey profile or a step profile. The concrete body 7 is in the Fig. 1 to 4 not shown.

In the concrete body 7 at least one tension element 1 is arranged, which in particular can run continuously in the concrete body 7, and in the event of an impact should absorb the tensile forces acting on the concrete body 7. The at least one tension element 1 can be cast in the concrete body 7. The at least one tension element 1 may in particular be made of metal, preferably of steel, in particular of reinforcing steel. Since the tension element 1 is protected by the concrete body 7 from environmental influences, the tension element 1 can be designed, in particular, free from a surface finish, for example a non-galvanized steel.

The at least one tension element 1 can in this case be a reinforcing bar or a reinforcing rope.

The at least one tension element 1 is connected to at least one coupling part 21, 22, in particular two coupling parts 21, 22, the coupling part 21, 22 being intended to be coupled to a coupling part 21, 22 of another baffle element 6, around the tension elements 1 the individual baffle elements 6 to connect to a continuous drawstring.

Such a baffle element 6 is idealized in the Fig. 5 shown, wherein the inside the concrete body 7 arranged parts are shown by dashed lines.

It is provided that the at least one tension element 1 and the at least one coupling part 2 are connected to each other by means of a positive connection. The positive connection here is a compound in which forces and movements are transmitted substantially perpendicular to a plane of contact by the shape of the parts involved in the connection. Here, the positive connection in particular with respect to a tensile loading of the connection in the direction of a longitudinal extension of the baffle element 6 take place. The positive connection therefore differs from a material connection in which the connection is generated by molecular forces, or a pure non-positive connection.

This results in the advantage that the baffle element 6 can be made simple yet reliable, since no complex welded connection is necessary, the risk of a defective weld can be excluded. Furthermore, care must be taken in the choice of materials of the coupling parts 21,22 and at least one tension element 1 not on a good weldability. By the positive connection, a reliable connection of the at least one tension element 1 with the at least one coupling part 21,22 can be achieved, which is simple and reliable, the force introduction between the tension element 1 and the coupling part 21,22 can be well specified, and especially over a large area can take place. Further, since the tension member 1 is surrounded by the concrete body 7, there is no danger of the positive connection becoming loose with time.

Preferably, a vehicle restraint system comprising a plurality of baffle elements 6 may be provided, wherein the baffle elements 6 are coupled together by means of the coupling parts 21,22. In the Fig. 1 to 3 in this case coupling parts 21,22 are shown, which are connected to the coupling part 21,22 of the adjacent baffle element 6.

It can preferably be provided that the guide wall element 6 has a coupling part 21, 22 at both ends, with a coupling part being particularly preferred 21 is arranged on a first end wall of the concrete body 7, and a second coupling part 22 is arranged on a second end wall of the concrete body 7. Here, preferably, the first coupling part 21 protrude from the first end wall of the concrete body 7, and / or the second coupling part 22 protrude from the second end wall of the concrete body 7.

The coupling parts 21, 22 may each have, in particular, an exposed contact surface provided for contacting the other coupling part 21, 22, in other words, the contact surface is not surrounded by the concrete body 7.

The coupling parts 21, 22 may in particular comprise a corrosion-resistant material, in particular a corrosion-resistant steel and / or a corrosion-resistant surface finish, preferably in the form of a galvanizing.

Furthermore, it can be provided that the first coupling part 21 has a coupling extension 23, that the second coupling part 22 has a coupling receptacle 24, and that the coupling extension 23 is formed to engage in the coupling receptacle 24 and to form such a releasable positive connection. The coupling extension 23 may preferably protrude from the concrete body 7, wherein the coupling receptacle 24 is recessed in the concrete body 7.

The coupling extension 23 and the coupling receptacle 24 may have a constant cross-section, in particular in the vertical direction. As a result, a plurality of such baffle elements 6 can be formed into a vehicle restraint system.

Alternatively, it may be provided that the first coupling part 21 and the second coupling part 22 have a coupling receptacle 24, and that an additional coupling piece is provided for the coupling that engages in both coupling receptacle 24. In this case, it may be preferred that the first coupling part 21 and the second coupling part 22 be recessed in the concrete body 7.

In particular, it can be provided that the guide wall element 6 has a tension element 1.

Alternatively, it can be provided that the guide wall element 6 has several, in particular two tension elements 1.

Particularly preferably, it can be provided that the positive connection without the concrete body 7 would be solvable, and the positive connection is fixed only by the concrete body 7. This eliminates the step in which the tension element 1 or the coupling part 21,22 would have to be deformed to make the connection.

Furthermore, it can preferably be provided that the at least one tension element 1 and the at least one coupling part 2 are connected to one another in a form-fitting manner. This direct positive connection means that the positive connection without bolts, rivets, additional screws and the like is formed, but that the tension element 1 and the coupling part 21,22 are formed such that they form the positive connection at the direct contact surface. According to the invention it is provided that for the positive connection the least one coupling part 2 has a passage opening 31,32, and that the at least one tension element 1 is performed through the passage opening 31,32. The passage opening 31, 32 may in this case in particular extend substantially orthogonally to the longitudinal extent of the guide wall element 6. In a tensile load of the tension element 1, the arranged in the passage opening 31,32 tension element 1 can forward the tensile load directly to the coupling part 2. Such a positive connection is in the embodiments of the invention Fig. 1, 2 and 4 intended. In this case, it can be provided that a passage opening 31, 32 per coupling part 21, 22 is provided for each pull element 1 connected to the coupling part 21, 22.

Particularly preferably, it may be provided that the pulling element 1, which is made through the lead-through opening 31, 32, is deflected essentially by 180 °. Here, the tension member 1 a, extending in the direction of the longitudinal extent of the baffle element 6, first portion 11 and have a second portion 12, wherein between the first portion 11 and the second portion 12, the tension element 1 is deflected in the passage opening 31,32. This eliminates a conclusion of the tension element 1 in the region of the coupling part 21,22, since the tension element 1 is first led away to the coupling parts 21,22 and then back again. As a result, no special design of the tension element 1 is necessary, since it is sufficient for the formation of the positive connection, the tension element 1 through the passage opening 31,32 perform. According to the invention, it is further provided that the least one coupling part 21, 22 has a curved tension element guide support 4 adjoining the passage opening 31, 31, and that the tension element guide support 4 has a radius of curvature of at least 1 cm. Preferably, the radius of curvature may be at least 3 cm, more preferably at least 5 cm. By this Zugelementführungsauflage 4, a good introduction of force from the tension element 1 can be achieved on the coupling part 21,22, wherein it is prevented that the tension element 1 is kinked. Furthermore Zugelementführungsauflage 4 may be advantageous when a rod-shaped tension member 1 is used, since the Zugelementführungsauflage 4 supports a bending of the tension element 1 in the preparation of the compound.

Preferably, it may be provided that - seen in the operating position - the passage opening 31,32 is substantially vertical. In other words, the passage opening 31, 32 may extend substantially orthogonally to the contact surface 71 of the concrete body 7. This results in the advantage that the power transmission can extend from the tension member 1 to the coupling part 21,22 over the entire height, in particular, the coupling extension 23 and the coupling receptacle 24 may be formed to transmit the forces along the vertical. As a result, a particularly advantageous power transmission can be achieved. Furthermore, the guide wall element 6 can thereby be made very narrow. Such a trained passage opening 31,32 is in the Fig. 2 and 4 shown.

Furthermore, it can be provided that - seen in operating position - the passage opening 31,32 substantially horizontally and transversely to the Longitudinal extent of the baffle element 6 extends. In other words, the passage opening 31, 32 can run transversely to the longitudinal extent of the guide wall element 6 and parallel to the contact surface 71 of the concrete body 7. This has the advantage that the coupling part 21,22 can be easily manufactured as a rolling or Sranggussteil. Such a trained passage opening 31,32 is in the Fig. 1 shown.

The tension element 1 may particularly preferably be provided for continuous arrangement in the concrete body 7, in which the tension element 1 extends substantially continuously from a first end wall of the baffle element 6 to a second end wall of the baffle element 6.

In this case, preferably, each tension element 1 can be provided for continuous arrangement in the concrete body 7, wherein in particular each tension element 1 connects the coupling part 21, 22 to one another.

Particularly preferably, it can be provided that the least one tension element 1 is guided through a passage opening 31 of the first coupling part 21 and through a passage opening 32 of the second coupling part 22, wherein the least one tension element 1 essentially forms a loop.

Here, the tension element 1 may have a first portion 11, which leads to both passage openings 31,32, wherein the tension element 1 is deflected in both passage openings 31,32. The second portion 12 of the tension element 1 leads from the passage opening 31 of the first coupling part 21 in the direction of the second coupling part 22, wherein this ends before reaching the second coupling part 22. Similarly, a third section 13 of the tension element 1 leads from the passage opening 32 of the second coupling part 22 in the direction of the first coupling part 21, which ends before reaching the first coupling part 21. The second portion 12 may then be connected to the third portion 13 in a suitable manner. Such a trained preferred embodiment of the baffle element 6 is exemplified in Fig. 4 shown. By this loop, the baffle element 6 can be formed particularly reliable, and it is particularly easy to manufacture.

The connection of the second portion 12 with the third portion 13 may preferably be effected in that these extend in regions parallel to each other and overlapping each other. In this case, the connection of the second section 12 with the third section 13 can be made via the concrete body 7.

Alternatively, the connection of the second portion 12 with the third portion 13 can be effected by a welded connection, for example by a butt weld.

Furthermore, one end of the second portion 12 may be connected to one end of the third portion 13 by a sleeve, in particular a threaded sleeve.

In an alternative embodiment, a predeterminable plurality of tension elements 1 may be provided in a guide wall element 6, the individual tension elements 1 being connected to a maximum of a single coupling part 21, 22, wherein the individual tension elements 1 are connected to one another within the concrete body 7. In a variant not belonging to the invention may further be provided that the positive connection between the at least one tension member 1 and the at least one coupling part 2 is a screw 5. Through the screw 5, a compact force application between the tension element 1 and the respective coupling part 2 can be achieved. A preferred embodiment of the baffle element 6 with a screw connection 5 which does not fall under the scope of the invention is shown by way of example in FIG Fig. 3 shown.

In particular, it can be provided that the at least one tension element 1 has an external thread 51 at one end, and that the external thread 51 is screwed into a threaded receptacle 52 of the at least one coupling part 2. As a result, a particularly simple screw connection 5 can be produced, wherein a particularly good introduction of force between the tension element 1 and the coupling part 21, 22 can be achieved. In further, also not belonging to the invention embodiments, the positive connection can be a dovetail connection or a tongue and groove connection.

Particularly preferably, it can be provided that the least one coupling part 21, 22 is a cast part cast in a mold. This means that the coupling part 21,22 is poured discontinuously by means of a mold, and not continuously by continuous casting. The shape can be a lost form. Alternatively, the mold may be a permanent mold, with the coupling member being a mold casting. An advantage of an individually cast casting is that it allows more freedom in terms of its three-dimensional design than a continuously cast or rolled coupling part, in which the cross-section in one dimension is substantially constant. As a result, for example, a vertical passage opening 31,32 are formed, which can be difficult to image by continuous casting or rolling. Also, the shape of the coupling part 21,22 can be much better adapted to the expected force flow through the positive connection, for example by the formation of the Zugelementführungsauflage 4. By forming the coupling part 21,22 as a casting, there is also the advantage that the production can be more material-saving.

Claims (7)

1. A barrier element (6) of a vehicle restraint system, comprising a concrete body (7), wherein at least one tension element (1) is arranged in the concrete body (7), wherein the at least one tension element (1) is connected to at least one coupling part (21, 22) which projects at least partially from the concrete body (7), wherein the at least one tension element (1) and the at least one coupling part (21, 22) are interconnected by means of an interlocking connection, wherein for the interlocking connection the least one coupling part (21,22) comprises a leadthrough opening (31, 32), wherein the at least one tension element (1) is guided through the leadthrough opening (31, 32), characterized in that the at least one coupling part (21, 22) has a curved tension element guide support (4) which adjoins the leadthrough opening (31, 32), and that the tension element guide support (4) has a radius of curvature of at least 1 cm.
2. A barrier element (6) according to claim 1, characterized in that the tension element (1) guided through the leadthrough opening (31, 32) is deflected substantially by 180°.
3. A barrier element (6) according to claim 1 or 2, characterized in that, as viewed in the operating position, the leadthrough opening (31, 32) extends substantially vertically.
4. A barrier element (6) according to claim 1 or 2, characterized in that, as viewed in the operating position, the leadthrough opening (31, 32) extends substantially horizontally and transversely to a longitudinal extension of the barrier element (6).
5. A barrier element (6) according to one of the claims 1 to 4, characterized in that the least one tension element (1) is guided through a leadthrough opening (31) of a first coupling part (21) and through a leadthrough opening (32) of a second coupling part (22), wherein the at least one tension element (1) substantially forms a loop.
6. A barrier element (6) according to one of the claims 1 to 5, characterized in that the least one coupling part (21, 22) is a cast part that is cast in a mold.
7. A vehicle restraint system, comprising a plurality of barrier elements (6) according to one of the claims 1 to 6, wherein the barrier elements (6) are coupled together by means of the coupling parts (21, 22).

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