EP1926859B1 - Crash barrier run - Google Patents

Description

The invention relates to a protective barrier along a roadway according to the features in the preamble of protection claim. 1

Such protective barrier strands are known in the art, for example by the FR 2 811 344 known. They have a substantially parallel to the roadway extending spar of round wood sections, which is supported by spacers anchored in the ground post. The front sides of two consecutive round wood sections adjoin one another. The round wood sections have on their underside a vertical groove in which a steel strip is arranged. The steel strip projects beyond the ends of the roundwood section in length. When installed, therefore, overlap the steel bands end in the grooves. Bolt bolts pass through the roundwood sections and the steel straps and optionally the spacers and couple them together so that the coupled steel straps form a tension belt.

A protective barrier of the above-described design is particularly intended for lanes in rural areas, primarily forest areas, and should visually achieve an adaptation to the environment.

The junctions between two roundwood sections are designed to be relatively unstable and, in particular, can offer only a small amount of resistance to heavy motor vehicles, such as middle and upper class passenger cars and heavy goods vehicles. It should be noted that the round wood sections inevitably can only get a certain maximum diameter, so as not to affect the desired visual impression.

Unfavorable is the well-known safety barrier also in terms of its installation. The steel bands must overlap in the grooves. For this, the free Ends of the steel strips are threaded into the respective adjacent end of a roundwood section, which often proves to be extremely difficult in practice. Then the bolts must be inserted through the roundwood sections and the overlapping ends of the steel straps before they can be attached to the spacers.

One approach to eliminating these disadvantages already goes from the priority-based utility model DE 20 2005 013 218 U1 according to the preamble of claim 1, the metal bands are coupled by tie tabs. The locking lugs are provided in the form of flat iron, which come to one side of the metal bands to the plant. Slots in the roundwood sections make it easy to insert the locking tabs.

The invention is based on the prior art based on the object to improve a protective barrier of the generic type so that this impacting objects opposes a higher resistance.

This object is achieved with the features specified in claim 1.

The essence of the invention is that the locking tabs are U-shaped configured with two legs, which are interconnected by a web, and that the locking tabs engage over the ends of two adjacent metal bands, the ends being received between the legs.

By this construction, the metal bands are coupled via locking tabs, so that a continuous tension belt is formed in the spar. In the case of an impact of a truck holds the guard rail by the shape of the locking tabs also very high tensile loads, the tension belt ensures the protective function of the guard rail, even if individual posts should cancel, for example, due to a direct impact.

Due to the inventive design of the metal bands cross lug of the protective barrier strand is reliably stabilized at the coupling points. An introduction of adverse moments in the log sections, a kink at the coupling point or splicing the Round wood sections is counteracted. Due to the high dimensional stability, the tensile strength of the tension belt is substantially higher than in known embodiments of the prior art. Particularly advantageously, the locking tabs are designed symmetrically.

Advantageous embodiments and further developments of the inventive concept are the subject of the dependent claims 2 to 8.

In an advantageous embodiment, it is provided that the web has a slot running in the web longitudinal direction. The locking lugs are made of one piece of sheet metal by punching and folding. The slot facilitates the folding of the latch plate.

Conveniently, the web is provided along the upper longitudinal edges of the legs. Thus, the bolt latch can be pushed from the top of the ends of the metal bands during assembly of the guard rail and then attached together with these on the post. For this purpose, the round wood sections on the end, parallel to the groove extending insertion slots, in which the locking tabs are used. Through these insertion slots, the locking tabs can be used after the Rundholzabschnitte are loosely fixed to the posts.

It is also advantageous if the roundwood sections are attached to the posts at the ends with the inclusion of spacers. The spacers act as a buffer between the roundwood sections and the posts, so that the posts are not damaged in light collision accidents. In addition, the anchoring of the posts next to the roadway is made possible.

The locking tabs, the metal bands, the Rundholzabschnitte and the spacers have aligned holes and are connected through the holes passing through bolts. During assembly, a round wood section can thus be loosely fastened to a spacer at the end with the inclusion of a locking lug with a screw bolt. In the next step, then the second round wood section is to be positioned, wherein the locking tab is to be inserted into the adjacent slot. Once the holes in the second log section and in the spacer flush a bolt can be inserted and a solid connection can be made. Finally, the bolt should be tightened on the first roundwood section.

The holes in the locking tabs and / or spacers can be designed as pointing in the direction of the spar slots. The elongated holes facilitate assembly, because they allow a length compensation. Also, the compliance behavior of a guardrail strand can support the slots because within the connection in the event of an impact the clearance is exploited before the full load acts in the connection area. The possibility of length compensation is also advantageous during the service life, because the materials of the components used have different coefficients of thermal expansion. Possibly occurring adverse voltages can be counteracted.

It is particularly advantageous if the locking tabs can be attached transversely to the screw bolts via transverse slots on the outer bores. This feature allows first loosely attaching the roundwood sections to the spacers via the outer holes, then inserting the coupling tabs from above through the slots and then inserting the inner bolts. Subsequently, all bolts are tightened and clamped the connection. Thus, the assembly is again significantly simplified by this design.

Figur 1

einen Ausschnitt aus einem Schutzplankenstrang in einer perspektivischen Darstellung von der Rückseite;

Figur 2

den Schutzplankenstrang in einer Seitenansicht;

Figur 3

den Schutzplankenstrang in der Draufsicht;

Figur 4

einen Ausschnitt aus dem Schutzplankenstrang in einer perspektivischen Ansicht von vorne;

Figur 5

den Schutzplankenstrang der Figur 4, wobei eine Riegellasche oberhalb des Holms dargestellt ist;

Figuren 6-8

die Riegellasche in drei Seitenansichten;

Figur 9

der Holm im Querschnitt entlang der Linie IIIb in Figur 3 und

Figur 10

der Holm im Querschnitt entlang der Linie IIIa in Figur 3.

The invention is explained in more detail with reference to exemplary embodiments illustrated in the drawings. Show it:

FIG. 1

a section of a protective barrier in a perspective view of the back;

FIG. 2

the protective barrier in a side view;

FIG. 3

the protective barrier in plan view;

FIG. 4

a section of the protective barrier strand in a perspective view from the front;

FIG. 5

the protective barrier of the FIG. 4 wherein a locking tab is shown above the spar;

Figures 6-8

the latch tab in three side views;

FIG. 9

the spar in cross section along the line IIIb in FIG. 3 and

FIG. 10

the spar in cross section along the line IIIa in FIG. 3 ,

Identical features of the protective barrier string have identical reference numerals in all figures.

In the FIGS. 1 to 5 the protective barrier strand 1 according to the invention is shown in fragmentary detail in several views. Such protective barrier strands 1 are usually arranged along roadways. They have a spar 2, which is mounted under inclusion of spacers 3 to post 4.

The spar 2 extends substantially parallel to the roadway and has shotwise, end in the area of the posts 4 adjacent round wood sections 5. Each round timber section 5 has on its underside 6 a vertical groove 7. In the groove 7, a metal strip 8 is arranged, which extends between the end faces 9 of the roundwood section 5. The metal strip 8 made of steel is usually 5 mm thick. Post side, the round wood sections 5 are flattened circumferentially. At these flattenings 10, a spacer 3 is incorporated in each case in the connecting region between two round wood sections 5 and a post 4.

At the ends 11, 12 of the roundwood sections 5, insertion slots 13 extending parallel to the groove 7 are provided, into which a locking lug 14 is inserted. The latch plate 14 establishes the connection between the metal strips 8 in adjoining round wood sections 5, so that a continuous tension belt is implemented in the protective strip 1. At each end 11, 12 of the roundwood sections 5 in the region of the insertion slot 13 connect two bolts 15, 16 the roundwood section 5, the metal strip 8, the latch plate 14 and the spacer 3. In order to introduce the bolts 15, 16, have said components 5, 8, 14, 3 aligned holes 17 to 20 (see FIGS. 9 and 10 ).

The bolts 15, 16 are arranged parallel and horizontal distance from each other at the same height. On the post side, the bolts 15, 16 are clamped under the inclusion of washers 21 by nuts 22. The locking tab 14 engages in the installed state, the ends 43, 44 (see. FIG. 3 ) of two adjacent metal strips 8. The locking tab 14 according to the invention will be described below with reference to FIG FIGS. 5 to 10 described in more detail.

The spacer 3 has a C-shaped middle part 23. This is configured in the top view substantially trapezoidal. The middle part 23 consists of a web 24, from which two legs 25 extend wing-like. The legs 25 are bent outward in the longitudinal direction of the spar 2. The legs 25 are also connected to each other via a strike plate 26. The striking plate 26 is welded to the legs 25 and terminates at its side edges flush with the side edges of the folded portions of the legs 25 from. On each leg 25 and in the striking plate 26 two holes in the form of slots 20 are provided at the points where the spacer 3 is penetrated by the bolts 15, 16 of the spar 2. Another slot 27 in the web 24 is used for releasably securing the spacer 3 on the post 4th

The post 4 has an inner profile 28 made of steel with a C-shaped cross section, which is fixed in the ground. On the side facing the roadway 29 and on the side facing in the longitudinal direction of the spar 2 sides, the inner profile 28 is provided with a wood casing 30. At the upper end 31, the wood casing 30 is recessed. In this area, the web 24 of the spacer 3 is screw-mounted. A bolt 32 penetrates the spacer 3, the wood casing 30 and the inner profile 28th

In the FIG. 5 the latch plate 14 is shown above the insertion slots 13 of the protective barrier strand 1. More side views of the latch plate 14 go out of the FIGS. 6 to 8 out. The latch plate 14 is configured U-shaped and made by punching and folding of a metal sheet. It has two legs 33, 34, which are interconnected by a web 35. The web 35 is provided along the upper longitudinal edges 36 of the legs 33, 34 and has a groove 38 extending in the web longitudinal direction 37. The legs 33, 34 have each other a distance A, which is greater than the thickness of the metal bands 8, which are received between the legs 33, 34 in the installed state. The latch plate 14 is edgewise inserted into the insertion slots 13 and made of steel. It has at its ends in each case two holes 19, 19a in the form of facing in the direction of the spar 2 long holes. At the outer slots 19a transverse slots 39 are provided, the width B is so large that the latch plate 14 can be plugged onto the outer screw 16.

In the FIG. 9 and is a cross section through the roundwood section along the line IIIa in FIG FIG. 3 shown. The cross section of the FIG. 10 runs along the line IIIb in FIG. 3 , The bolts 15, 16 are shown as carriage bolts with square neck, which pass through holes 17 to 20 in the roundwood section 5, in the metal strip 8, in the latch plate 14 and in the spacer 3. The heads 40 of the bolts 15, 16 are arranged on the road side of the protective barrier 1 in countersunk holes 41. The threaded bolts 15, 16 have, on the post side, a thread 42 onto which the nuts 22 are screwed with the inclusion of washers 21.

The groove 7 and the insertion slot 13 are arranged centrally and without spacing. The locking tab is pushed from above through the insertion slot 13 on the metal strip 8. The ends of the metal bands 8 are hereby received between the legs 33, 34. In the FIG. 9 It can be seen that between the legs 33, 34 is a slot 38 in the web 35. From the FIG. 10 It can be seen that a transverse slot 39 is provided in the locking tab 14 below the bolts 16, through which the assembly is much easier.

The protective barrier 1 according to the invention withstands particularly high tensile loads and is particularly easy to install. By coupling the metal strips 8 by means of the locking tabs 14 and the spacers 3, the protective barrier 1 of the invention meets the requirements that are placed on the protective function of steel barriers.

During assembly, the posts 4 are first anchored in the ground. Subsequently, the spacers 3 are mounted on the post 4. The roundwood sections 2 are delivered to the construction site together with the metal strips 8 arranged therein ready for installation. The roundwood sections 5 are then fastened loosely to the outer oblong holes 20 of the spacers 3 with the outer threaded bolts 16. Subsequently, a locking tab 14 is inserted from above into the insertion slot 13 so that it falls on the outer bolt 16 or can be pushed. Finally, the inner bolts 15 are used and all bolts 15, 16 tightened.

Reference numerals:

1 -

A protective barrier

2 -

Holm

3 -

spacer

4 -

post

5 -

Round timber section

6 -

Underside v. 5

7 -

groove

8th -

metal band

9 -

End pages v. 5

10 -

Flattening at 5

11 -

End of v. 5

12-

End of v. 5

13 -

insertion

14 -

bar tab

15 -

inner bolt

16 -

outer bolt

17 -

Hole in 5

18 -

Hole in 8

19 -

inner bore in 14

19a -

outer bore in 14

20 -

Hole in 3

21 -

washer

22 -

mother

23 -

C-shaped middle section

24 -

Bridge v. 3

25 -

Schenkef v. 3

26 -

striking plate

27 -

Slot in 24

28 -

internal profile

29 -

the road side facing v. 4

30 -

wood casing

31 -

upper end v. 23

32 -

bolts

33 -

Thighs v. 14

34 -

Thighs v. 14

35 -

Bridge v. 14

36 -

upper longitudinal edge v. 14

37 -

Steg longitudinally

38 -

slot

39 -

Transverse slot in 14

40 -

head

41 -

countersink

42 -

thread

43 -

End of v. 8th

44 -

End of v. 8th

A -

Distance between 33 u. 34

B -

Width v. 39

Claims (8)

1. Crash barrier run along a roadway, comprising a rail (2) which extends substantially parallel to the roadway and is composed of round timber sections (5) which adjoin one another at their ends and which are detachably fastened to posts (4) anchored alongside the roadway, wherein each round timber section (5) has on its lower side (6) a vertical groove (7) in which a metal strip (8) is arranged, and the metal strips (8), which follow one another in the rail (2), are coupled by means of locking plates (14), characterised in that the locking plates (14) have a U-shaped configuration and comprise two legs (33, 34) which are interconnected by a web (35), and the locking plates (14) engage over the ends (43, 44) of two adjacent metal strips (8), the ends (43, 44) being accommodated between the legs (33, 34).
2. Crash barrier run according to claim 1, characterised in that the web (35) has a slot (38) running in the web longitudinal direction (37).
3. Crash barrier run according to claim 1 or 2, characterised in that the web (35) is provided along the upper longitudinal edges (36) of the legs (33, 34).
4. Crash barrier run according to one of claims 1 to 3, characterised in that the round timber sections (5) have at their ends insertion slots (13) which run parallel to the groove (7) and in which the locking plates (14) are inserted.
5. Crash barrier run according to one of claims 1 to 4, characterised in that the round timber sections (5) are fastened at their ends to the posts (4) with the incorporation of spacers (3).
6. Crash barrier run according to one of claims 1 to 5, characterised in that the locking plates (14), the metal strips (8), the round timber sections (5) and the spacers (3) have aligned bores (17-20) and are interconnected via threaded bolts (15, 16) which pass through the bores (17-20).
7. Crash barrier run according to claim 6, characterised in that the bores (19, 19a, 20) in the locking plates (14) and/or spacers (3) are designed as elongate holes pointing in the longitudinal direction of the rail (2).
8. Crash barrier run according to one of claims 6 to 7, characterised in that the locking plates (14) can be placed transversely onto the threaded bolts (16) via transverse slots (39) on the outer bores (19a).

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