EP3190232A1 - Underride protection - Google Patents

Abstract

The present invention relates to a crash barrier assembly (1) for placement on a carriageway (6) having fixed posts (4), crash barriers (2) and underrun protection (5) in the ground, the guardrails (2) engaging in an upper region the post (4) are releasably secured and the underride guard (5) in a row at a distance to the posts (4) between the carriageway (6) and guardrail (2) is releasably attached. The guardrail assembly (1) is characterized in that between the underride guard (5) and the post (4) a spacer (13) is releasably secured, wherein the spacer (13) has two in cross-section U-shaped configured components (16, 17 ) having.

Description

The present invention relates to a crash barrier arrangement for arrangement on a carriageway with the features in the preamble of claim 1.

Such a protective device counts by the EP 2 556 755 A1 to the state of the art. It has fixed to the ground posts, a screwed to the post, from releasably connected guardrails existing guardrail and a hung below the guardrail strand via tabs Leitblechstrang on substantially vertically extending baffles, which are releasably connected to each other. The tabs are connected by screws on the one hand with the baffles and on the other hand with the undersides of brackets, which distance the guardrail strand to the posts.

Such a protective device is a useful protection for cyclists, especially motorcyclists, is when they have come to case and bounce against the baffle.

However, the known passive protective device has the disadvantage that the tabs are mounted below the consoles. If a passenger or truck (car / truck) bounces against the guard rail, the screw connection between the guard rail and the brackets fixed to the post is canceled upon reaching a certain impact energy with the result that due to the then bending away from the roadway post is formed by the Leitblechstrang a kind of ramp over which the car / truck can drive away.

Another protective device is in the prior art, for example by the EP 1 184 515 A1 known. In this protection device, a horizontal protective barrier string of nested protective barriers is mounted along the upper ends of the posts along. Below the protective barrier strand extends a protective skirt of substantially vertically extending baffles. The baffles are hung by folded tabs on the crash barriers. Successive baffles of the protective apron are connected overlappingly with their ends.

The apron serves as an underrun protection and is intended in particular to protect injured cyclists and motorcyclists and prevent them from sliding underneath the guardrail and bouncing against the posts of the guard or other obstacles. Such underrun protection has proven itself in principle, however, it may, depending on the impact direction of an injured person to injuries thereof come at the connection region of two baffles. Furthermore, the assembly of the baffles is only conditionally fast and easy executable, while ensuring a high degree of compliance with the crash requirements.

Object of the present invention is therefore to improve known from the prior art underrun protection devices in the crash safety and their crash energy absorption capacity.

The aforementioned object is achieved according to the invention with the features in the characterizing part of claim 1.

Advantageous developments of the solution according to the invention are part of the dependent claims.

The crash barrier arrangement according to the invention for arrangement on a roadway which has fixed posts in the ground, crash barriers and underrun protection, wherein the guardrails are releasably secured in an upper region on the post and the underrun protection in a manner releasably secured at a distance to the post between the roadway and guardrail is, according to the invention is particularly characterized in that the underrun protection and the post, a spacer is releasably secured. The spacers consist of two configured in cross-section U-shaped components.

This offers the particular advantage that in the U-shaped configured components can be used on commercial U-shape profiles. Particularly preferably, these are made of a steel material or light metal, which is commonly used in the construction of road protection systems. Consequently, this results in a particularly cost-effective and at the same time good crash-absorbing possibility of securing the underrun protection to crash barrier arrangements or of retrofitting existing guard rail arrangements with the spacers according to the invention.

Preferably, a first U-shaped component is releasably coupled to the post as a post holder, more preferably the coupling is made by bolts. This gives rise to the possibility that, for example, the posts are already prefabricated in the case of a guard rail protection system to be newly erected and thus a quick erection assembly is ensured. Furthermore, the releasable coupling offers the possibility of the post holder after an accident or due age-related wear and tear, without complete dismantling of guard rail protection system or underrun protection.

Furthermore, it is possible to couple the second U-shaped configured component as a wall bracket with the underrun protection. The coupling can be carried out by positive, non-positive or cohesive coupling methods. Preferably, the positive coupling without the complete guard rail assembly to dismantle, so that the wall holder is interchangeable after an accident or due to age-related wear and tear.

The post holder and the wall holder are coupled so that together they result in a rectangular cross-section configured profile. In turn, the rectangularly configured profile offers the particular advantage that the legs which extend between posts and underrun protection absorb crash energy by folding or by buckling. In the event of an accident, the distance or the distance between the underride guard and the post via the substantially rectangularly configured profile is thus absorbed in such a way that an acceleration which has physical long-term consequences for a victim in a critical limit value is reduced. Overall, thus increasing the chances of survival or minimizes the risk of injury, since the first impact or impact is reduced in intensity.

Furthermore, the post holder and the wall bracket are coupled to each other via bolts. Again, this results in turn the possibility of individually exchanging the post holder or the wall holder as separate components via the bolts. Also, various crash energy absorption levels can be adjusted via the bolts, so that by using the bolts or arrangement of the bolts, the crash energy absorption capacity can be influenced.

In a further preferred embodiment of the wall holder surrounds with his legs the post holder. This results in particular the advantage that in the case of buckling or spreading the legs of the wall bracket are directed away from the road, so that here the risk of accident or injury, by the accident victim opposing or counteracting pointed leg is minimized.

Preferably, the post holder on a back, wherein the back is wider than the road-oriented side of the post. This in turn results in the possibility of better crash energy absorption, since the legs of both post holder, and wall holder do not form a rigid connection between the post and underrun protection, but the legs are guided past the post. In the case of a buckling or even a drape thus a cushioning effect is generated.

Particularly preferably, the wall holder is relatively displaceable by the action of force to the post holder. As a result of the relative displacement, there is likewise a crash energy reduction which, in interaction with thighs sliding past the post, reduces the negative acceleration in its intensity. In the event of an accident, the underrun protection in the area of the impact must most likely be replaced. Angliedernde areas take on the relative shift crash energy, but are repairable by negative relative displacement, ie a withdrawal or transfer to the original state, cost recoverable. In particular, this saves exchanging a deformed element that can only be used once.

Preferably, spacer means are arranged between the post holder and the wall holder, which are particularly preferably formed from plastic. In turn, the crash energy absorption capacity can be influenced by means of these instantaneous means, which can be used, for example, in the form of spacers or spacer plates. It is also possible to use the instantaneous means to determine a triggering force at which the system triggers. For example, an accidental release by a vehicle door striking or a slight impact of a falling object can thus be avoided.

In a particularly preferred embodiment, the wall holder for receiving the bolts on long slots in his legs, the slots are oriented horizontally in the direction of the post to the underrun protection. In the event of an accident or impact on the underride protection, a horizontal direction of movement will occur in most cases. The elongated holes, which are likewise aligned in the horizontal direction, thus enable the relative displacement and, in turn, a reduction of the negative acceleration to a subcritical dimension.

Preferably, in one leg, two elongated holes extend at an angle to one another. By the angle learns in an acceleration or relative movement of the wall bracket to post holder, the system has a resisting force, since the bolts maintain their absolute position. There is thus a systematic braking or a systematic guided predefined reduction of the crash energy. Also, a resistance moment can be determined in turn, which feeds the system its purpose insert according to the invention when a tripping force is exceeded.

Particularly preferably, the angle is arranged in a range between 5 and 15 °, preferably 10 °. Measurements have shown here that in the event of the expected load of a bouncing motorcyclist, the system degrades particularly advantageous crash energy.

In the context of the invention, it is also possible to arrange both elongated holes such that both slots are at an angle with respect to a horizontal axis. However, the arrangement should in principle be such that the oblong holes are at an angle to each other and not parallel. For this purpose, for example, the system is applicable in such a way that a targeted folding or retracting the underrun protection in an upper, lower or central region can be performed. Depending on the requirements, the underrun protection can thus be easily modified to the expected accident characteristics in its specification.

The present object is further provided with a crash barrier arrangement for placement on a roadway having fixed in the ground posts, crash barriers and underrun protection, wherein the guardrails are releasably secured in an upper region of the post and the collision protection shotwise at a distance to the posts between Roadway and guardrail is releasably secured, achieved in that between the underrun protection and the post, a spacer is releasably secured, wherein the spacer is coupled as a hollow sheet metal component with the post. Also, according to the invention, two legs of the hollow sheet-metal component are arranged in the connection region in such a way that they overlap and are coupled to the post. This offers in particular the advantage that the spacer can be made as a hollow sheet metal component by simply folding or forming. A complex production and post-processing by welds or the like, is not necessary. The coupling on the post at the same time takes over the fixation of the spacer and the stabilization of the leg overlapping in the connection area. Thus, even under durability aspects, there are no weak points in the area of a joining zone or even a welding zone.

Preferably, the sheet metal part in the connection region to the post slots, the slots are oriented in the direction of the longitudinal axis of the post. This results in particular the advantage that the spacers can be adapted to the particular requirements that are placed on the underrun protection. About the slots of the spacer to existing guard rail assemblies or even new to be built guard rail assemblies can be easily coupled.

Furthermore, there is the advantage that the spacer on the slots in the vertical direction is displaced. A vertically higher positioning has the result that the underrun protection tends to bend downwards, a horizontal lower arrangement of the spacer forces the underrun protection rather to bend in the upper area to the rear. Depending on the present on the route profile can thus be met, for example, in an arrangement in a gradient, a respective requirement requirement. In a further preferred embodiment, the sheet metal component is coupled via bolts to the post. This results in the possibility of each separately to change the spacer separately, without dismantling further component of the guard rail assembly.

In the context of the invention it is also possible to couple the underrun protection directly to the spacer. The coupling takes place, for example, a positive fit via bolts or via a plug connection or cohesively via a welding process. The advantage here would be that already existing brackets can be omitted for underrun protection.

The underrun protection can be coupled according to the invention in both embodiments via a headband with the guardrail. The spacer thus increases the crash safety and also the crash energy absorption capacity between the underride guard and the post. The headband ensures that the underride guard can not move into an undesired position, so that, for example, a motorcyclist can slide under the underride guard or the underrun guard does not serve as a ramp for a car or a commercial vehicle.

In a further preferred embodiment in the coupling with a headband two cup-shaped configured discs between the connection of headband and guardrail are incorporated. The cup-shaped configured discs are particularly preferably designed in the form of a plate spring, wherein the two disc springs are so incorporated between guardrail and headband that their respective spring direction towards each other shows. As a result, a pendulum suspension of the underrun protection is achieved via the bracket on the guide rail or on the guardrail.

The first impact causes the system to swing away so that the intensity of the first impact is significantly reduced. Very serious injuries or fatal injuries due to an initial high-intensity attack are avoided. Depending on the design of the spring rate of the disc springs, the system gives way completely for a short time, before the actual energy reduction by the underrun protection is realized. In particular, a bouncing head of a motorcyclist is thus moved away from the underrun protection by the initially executed pendulum motion, so that the actual energy reduction takes place at less risk of endangered limbs or the body, but not at in relation to this sensitive head. The injury rate is thereby significantly reduced.

Figur 1

eine perspektivische Ansicht einer erfindungsgemäßen Leitplankenanordnung,

Figur 2

eine Seitenansicht eines Pfostens mit Schnittansichten von Unterfahrschutz und Leitplanke,

Figur 3

eine abschnittsweise Draufsicht einer erfindungsgemäßen Leitplankenanordnung,

Figur 4a

eine Detailansicht des erfindungsgemäßen Wandhalters,

Figur 4b

eine Detailansicht des erfindungsgemäßen Wandhalters,

Figur 5a

eine Detailansicht des erfindungsgemäßen Pfostenhalters,

Figur 5b

eine Detailansicht des erfindungsgemäßen Pfostenhalters,

Figur 6

eine Seitenansicht einer zweiten Ausführungsvariante eines erfindungsgemäßen Abstandhalters,

Figur 7

den zweiten Abstandhalter in einer Schnittansicht,

Figur 8

den zweiten Abstandhalter in einer Ansicht aus Blickrichtung des Pfostens und

Figur 9

den zweiten Abstandhalter in einer Seitenansicht.

Further advantages, features, characteristics and aspects of the present invention will become apparent from the following description. Embodiments are illustrated in the schematic drawings. These are for easy understanding of the invention. Show it:

FIG. 1

a perspective view of a crash barrier arrangement according to the invention,

FIG. 2

a side view of a post with sectional views of underrun protection and guard rail,

FIG. 3

a sectional plan view of a crash barrier arrangement according to the invention,

FIG. 4a

a detailed view of the wall bracket according to the invention,

FIG. 4b

a detailed view of the wall bracket according to the invention,

FIG. 5a

a detailed view of the post holder according to the invention,

FIG. 5b

a detailed view of the post holder according to the invention,

FIG. 6

a side view of a second embodiment of a spacer according to the invention,

FIG. 7

the second spacer in a sectional view,

FIG. 8

the second spacer in a view from the direction of the post and

FIG. 9

the second spacer in a side view.

In the figures, the same reference numerals are used for the same or similar components, with a repeated description omitted for reasons of simplicity.

FIG. 1 shows a crash barrier arrangement 1 according to the invention comprising a plurality of crash barriers 2, posts 4 fixed in the floor 3 and an underride protection 5. The crash barrier arrangement 1 is arranged next to a carriageway 6. The individual crash barriers 2 are connected to one another via coupling elements 7 and result in a guardrail strand 8. The guardrail strand 8 is coupled via mounting brackets 9 to the posts 4 in an upper region 10 of the posts 4. Furthermore, headband 11 are attached to the crash barriers 2, which extend downwards relative to the image plane and at which the underrun protection 5 is fixed. The underrun protection 5 is connected in shots in coupling points 12 to form a strand. In addition, the guard rail assembly 1 according to the invention at the height of the underrun protection 12 spacers 13 which are fixed to the post 4. The spacers 13 are positioned between underrun protection 12 and posts 4.

FIG. 2 shows the crash barrier arrangement 1 according to the invention in a side view or sectional view. The posts 4 have the mounting bracket 9 for receiving the crash barriers 2 in the upper area. At the crash barriers 2 are by means of bolts 14 headband 11 for holding the underrun protection 5 set. Between the underrun protection 5 and the post 4 of the spacer 13 according to the invention is arranged. The spacer 13 bridges the distance D between the post 4 and the underrun protection 12. In the variant shown here, the spacer 13 elongated holes 15, which classify in the direction R between post 4 and underrun protection 12. The elongated holes 15 serve to connect the two-component spacer 13 with each other. The spacer 13 is divided into a wall holder 16 and a post holder 17 shown in the oblong holes 15. The wall holder 16 and the post holder 17 are in turn coupled to each other via bolts 14.

In FIG. 2 Furthermore, a detailed view of the connection of the retaining clip 11 to the guard rail 2 according to variant 1 and variant 2 is shown. In variant 1, two disc springs T are incorporated between the headband 11 and the guard rail 2 and bolted via the bolt 14 between the guardrail 2 and the headband 11. The disc springs each have a curvature W, which point towards each other in opposite directions. As a result, the spring forces F are directed opposite and a yielding of the system in pendulum direction P on the headband 11 is thereby realized. In variant 2 of FIG. 2 a structure is shown in which the headband 11 rests directly on the guardrail 2, wherein a positive connection by the bolt 14 via two disc springs T takes place with further incorporation of a washer U. In the context of the invention, however, it is also possible to arrange the headband between the two cup springs T, wherein the cup springs T with its curvature W, as shown in variant 1 and variant 2, can be arranged pointing away from each other, but also not closer represented, can be arranged facing each other.

FIG. 3 shows a section-wise plan view of the guard rail assembly 1 according to the invention. Shown is the substantially C-shaped configured posts 4, to which a coupling element 7 of the crash barriers 2 is fastened via mounting bracket 9. The mounting bracket 9 is in turn secured by bolts 14 to the post 4. Furthermore, 2 brackets 11 are attached to the coupling of the underrun protection 5 on the crash barriers. Between the post 4 and the underrun protection 5, the spacer 13 according to the invention is arranged. The spacer 13 consists of essentially two U-shaped configured components, which are the wall holder 16 and the post holder 17. The wall holder 16 and the post holder 17 are coupled to each other via bolts 14. The wall holder 16 engages around the post holder 17 on the outside, so that in the case of a relative displacement in the direction R, the legs of the wall holder 16 are guided past the post 4 on the outside.

FIG. 4a shows a detailed view of the wall bracket 16 in a side view of the leg 18. In the leg 18 two elongated holes 15 are arranged, wherein the slots 15 are oriented with its longitudinal axis 19 in the direction R. The right slot 15, which is related to the image plane, is arranged at an angle α to the left slot 15, which is related to the image plane. In the context of the invention it is also conceivable, for example, both slots 15 tapering downwards, each with the angle α to arrange half.

FIG. 4b shows a plan view of the wall holder 16 according to the invention, wherein the wall holder 16 has a back 20 and two adjacent to the back 20 leg 18th

FIG. 5a shows a post holder 17 according to the invention in a plan view. The post holder 17 has mounting holes 22 for coupling with the post not shown here. The post holder 17 has in its back 21 mounting holes 22 for coupling with the post not shown here. Furthermore, the post holder 17 in its legs 23 mounting holes 24 for coupling with the wall bracket not shown here.

FIG. 5b shows a sectional view through the post holder 17 according to the invention, wherein shown in the back 21 of the post holder 17, the mounting holes 22 for coupling with the post not shown here and in the legs 23 of the post holder 17, the mounting holes 24 for coupling with the wall bracket not shown here are. The back 21 of the post holder 17 is narrower than the back 20 of the wall bracket 16th

FIG. 6 shows a second embodiment of a spacer 13 according to the invention, wherein the spacer 13 is mounted analogously to the first variant between the underrun protection 5 and the post 4 of the guard rail assembly 1. The spacer 13 bridges the distance D between posts 4 and underride guard 5. The second variant of the spacer 13 according to the invention is coupled via bolts 14 to the post 4.

FIG. 7 shows a section of the spacer 13 according to the invention, wherein it can be seen that the spacer 13 can be produced as a forming component by folding. In the area of the post, which is not shown here, the spacer 13 has mounting openings 22 for the passage of the threaded bolts not shown here.

FIG. 8 shows the spacer 13 according to the invention in a view from the direction of the post. The mounting holes 22 are formed in the form of elongated holes 15, so that the spacer 13 in the vertical direction V is relatively displaceable.

FIG. 9 shows a side view of the spacer 13 according to the invention, wherein it is clearly visible that inclined surfaces 25 are formed in the upper and lower areas related to the image plane, the inclined surfaces 25 in particular allow a shift in the vertical direction V, without the spacer 13 to the here unspecified underrun strikes. An adjustment over the oblong holes 15 off FIG. 8 is thus possible by simple relative displacement in the direction V.

Reference numerals:

1 -

guardrail system

2 -

barrier

3 -

ground

4 -

post

5 -

Underride protection

6 -

roadway

7 -

coupling element

8th -

A crash barrier

9 -

mounting bracket

10 -

upper area

11 -

headband

12 -

Underride protection

13 -

spacer

14 -

bolts

15 -

slots

16 -

wall mount

17 -

pole holders

18 -

Thighs to 16

19 -

Longitudinal axis to 15

20 -

Back to 16

21 -

Back to 17

22 -

Mounting opening to 17

23 -

leg

24 -

mounting hole

25 -

sloping surface

D -

distance

L -

Longitudinal axis to 4

R -

direction

V -

vertical direction

T -

Belleville spring

F -

spring force

P -

the direction of swing

W -

bulge

U -

washer

α -

angle

Claims (14)

Guardrail arrangement (1) for arrangement on a carriageway (6), which has posts (4) fixed in the ground, crash barriers (2) and an underride protection (5), the guardrails (2) being fixed in an upper region to the posts (4). are releasably secured and the underride guard (5) in a row at a distance to the posts (4) between the carriageway (6) and guardrail (2) releasably secured, characterized in that the underrun protection (5) via a headband (11) with the Guardrail (2) is coupled, wherein between the guardrail (2) and the headband (11) or between the headband (11) and the screw bolt (14) two cup-shaped configured discs are arranged. Guard rail assembly according to claim 1, characterized in that the cup-shaped configured writing plate spring-like, preferably the cup-shaped configured plate spring-like discs are mutually oppositely running between the headband (11) and the guardrail (2) incorporated. Guardrail assembly according to claim 1 or 2, characterized in that between the underrun protection (5) and the post (4) a spacer (13) is releasably secured, wherein the spacer (13) has two in cross-section U-shaped configured components (16, 17 ) and preferably a first U-shaped component is releasably coupled to the post (4) as a post holder (17), preferably the coupling via screw bolts (14) and that a second U-shaped configured component as a wall holder (16) the underride guard (5) is coupled. Guard rail assembly according to claim 3, characterized in that the post holder (17) and the wall holder (16) are coupled together to form a rectangular profile in cross-section. Guardrail arrangement according to claim 4, characterized in that the coupling of post holder (17) and wall holder (16) via screw bolts (14) is made. Guard rail arrangement according to one of the preceding claims, characterized in that the wall holder (16) engages around the post holder (17) with its legs (18). Guardrail arrangement according to one of the preceding claims, characterized in that the post holder (17) has a back (21), wherein the back (21) is wider than the side facing the carriageway (6) of the post (4). Guard rail arrangement according to one of the preceding claims, characterized in that the wall holder (16) is relatively displaceable by the action of force to the post holder (17). Guardrail arrangement according to one of the preceding claims, characterized in that between the post holder (17) and the wall holder (16) spacer means are arranged, preferably made of plastic. Guardrail arrangement according to one of the preceding claims, characterized in that the wall holder (16) for receiving the bolts (14) slots (15) in its legs (18), wherein the slots (15) horizontally in the direction (R) of post ( 4) are oriented to underrun protection (5). Guardrail arrangement according to one of the preceding claims, characterized in that in one leg (18) has two Longitudinal holes (15) at an angle (α) to each other, wherein the angle (α) is preferably in a range between 5 and 15 degrees, particularly preferably at 10 degrees. Guardrail assembly according to claim 1, characterized in that between the underrun protection (5) and the post (4), a spacer (13) is releasably secured, wherein the spacer (13) is coupled as a hollow sheet metal component with the post (4), wherein two legs (23) of the sheet metal component in the connection region (13) overlap. Guard rail arrangement according to claim 12, characterized in that the sheet-metal component in the connection region (13) to the post (4) elongated holes (15), wherein the elongated holes (15) in the direction (R) of the longitudinal axis (L) of the post (4) oriented are. Guardrail assembly according to claim 12 or 13, characterized in that the sheet metal component via bolts (14) to the post (4) can be coupled.

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