EP0924346B1 - Guard rail - Google Patents

Abstract

The tensile element (22) provided in the length direction of the barrier beam (3) comprises a flat belt made from textile and/or plastic material, which is passed around the ends of the tree trunk half sections (7,8) forming the beam. The barrier beam is formed by round tree trunk sections (4) placed end to end and supported on uprights (5) driven into the ground by the side of the road. Hollow posts (19) and breakable screws (20) are used to secure the beam to the uprights. The tree trunk sections are divided in the vertical direction into two half sections held together by wood screws and nuts.

Description

The invention relates to a guard rail strand according to the features in the preamble of claim 1.

Such a guardrail strand is through the DE 195 17 933 A1 known. Here the Firstholm is out halved tree trunk sections from a tensioned Steel rope interspersed in the longitudinal direction. Such one Guardrail strand can not only with regard to its Materials and its shape of the rural environment adapted to a road surface in a visually appealing way, but also meet the requirements of the protective function pure steel guardrails.

Has in the known type of guard rail internal start-up attempts have shown that the tensioned wire rope at higher loads Can cut tree trunk sections. The Firstholm can then no longer come off the post properly to solve. Rather, a crash pulls through a heavier one Motor vehicle the Firstholm with the posts off the roadway.

The invention is based on the prior art Task based on that described in the preamble of claim 1 To further develop the guard rail line that he can also handle higher loads from heavy motor vehicles fully meets.

According to the invention, this object is achieved in those listed in the characterizing part of claim 1 Features.

Then the tension element is now made as a flat belt a textile material and / or made of plastic and in an upright extension between the trunk halves of the log sections forming the Firstholm. In particular, it is a textile and / or plastic fabric, e.g. made of polyester yarn. By correspondingly varying the dimensions of the tension element in connection with the choice of material, the load limit be carefully regulated. The tension element is treated like a sandwich and when assembling the Guardrail strand placed between the trunk halves. Here, the tension element can be wound from a roll and inserted in any length between the stem halves become. This has the advantage that the distance the post not that of steel guardrails must have a standardized grid dimension of 4,000 mm.

Because the ridge spar over slip sleeves and predetermined breaking screws connected to the post, it will join one Completely release the vehicle impact from the posts and remain also in the case of posts bent from the road in its original height. The tension element then forms here an important safety element to catch a Motor vehicle. This cannot over the guardrail strand drive away.

The posts can consist of tubes or a C-shaped one Have cross-section. The post spacing in the longitudinal direction of the guardrail strand depends on the respective requirement levels.

In order to facilitate the installation of the guardrail strand, provide the features of claim 2 that the tension element on at least one half of the trunk of each log section is stapled. Stapling can be done by nailing or with the help of a stapler.

The tree trunk sections forming the Firstholm are according to the embodiment of claim 3 in open to the top and connected to the slip sleeves, in particular welded, metallic shells attached. This Shells have approximately the contour width of the posts and extend preferably over about the lower peripheral region the tree trunk sections. The attachment of the tree trunk sections in the shells can be done by screw nails or wood screws. The metallic hatchets overlap these posts in the case of C-shaped posts. at Round posts prefer to hold the slip sleeves in the Post. Slip sleeves and tabs exist in particular from steel.

According to claim 4, the tree trunk sections are by means of Band clamps set on the shells. Hereby can specifically take into account the character of wood.

Another embodiment of the invention consists in the Features of claim 5. After that, the tree trunk sections attached to metallic tabs, in particular screwed with these, which in turn with the metallic Slip sleeves connected, in particular welded, are. These tabs preferably extend above of the slip sleeves and lie in the vertical parting plane between the stem halves. In this embodiment are the supporting metal parts except for the posts of encased the stem halves.

A visually appealing and stable connection of the in Longitudinally abutting tree trunk sections is achieved with the features of claim 6. After that are the trunk halves of the successive tree trunk sections offset to each other in the longitudinal direction. On this way, stable connection areas can also be created be created.

The resilience of a guardrail strand can be with the Features of claim 7 can be further increased. To is in the height range between the Firstholm and the Floor provided a central spar parallel to the ridge spar. This central spar also consists of tree trunk sections, each consisting of screwed stem halves are composed. Here the tree trunk sections extend preferably from post to post. she are attached to metal tabs that run lengthways protrude from metallic slip sleeves, which in medium height by means of predetermined breaking screws on the posts are set. The center spar can also be used by a tension element in the form of a flat belt made of textile Material and / or plastic in an upright extension be pulled through.

In the event of a vehicle collision, the Firstholm becomes complete detach from the posts and then act like a drawstring. The center spar will push up a little and release its hold-up energy into the vehicle.

Figur 1

in schematischer Seitenansicht einen Längenabschnitt eines Schutzplankenstrangs;

Figur 2

in vergrößertem Maßstab einen vertikalen Querschnitt durch die Darstellung der Figur 1 entlang der Linie II-II in zwei verschiedenen Ausführungsformen;

Figur 3

eine Draufsicht auf die Darstellung der Figur 2;

Figur 4

eine Seitenansicht auf die Darstellung der Figur 2;

Figur 5

eine Draufsicht auf den Schutzplankenstrang gemäß dem Ausschnitt V der Figur 1 in vergrößertem Maßstab;

Figur 6

einen vertikalen Querschnitt durch die Darstellung der Figur 5 entlang der Linie VI-VI in vergrößertem Maßstab und in 90° Versetzung;

Figur 7

in schematischer Seitenansicht einen Längenabschnitt eines Schutzplankenstrangs gemäß einer weiteren Ausführungsform;

Figur 8

in vergrößerter Darstellung eine Schlupfhülse mit Lasche zur Integration in den Firstholm des Schutzplankenstrangs gemäß Figur 7 und

Figur 9

eine Schlupfhülse mit Laschen zur Integration in den Mittenholm des Schutzplankenstrangs gemäß Figur 7.

The invention is explained in more detail below on the basis of exemplary embodiments illustrated in the drawings.
Show it:

Figure 1

a schematic side view of a longitudinal section of a guard rail strand;

Figure 2

on an enlarged scale a vertical cross section through the representation of Figure 1 along the line II-II in two different embodiments;

Figure 3

a plan view of the illustration of Figure 2;

Figure 4

a side view of the illustration of Figure 2;

Figure 5

a plan view of the guard rail strand according to section V of Figure 1 on an enlarged scale;

Figure 6

a vertical cross section through the representation of Figure 5 along the line VI-VI on an enlarged scale and in 90 ° offset;

Figure 7

a schematic side view of a length section of a guard rail strand according to a further embodiment;

Figure 8

in an enlarged view a slip sleeve with tab for integration into the ridge of the guardrail strand according to Figure 7 and

Figure 9

a slip sleeve with tabs for integration into the central spar of the guard rail strand according to FIG. 7.

1 in FIG. 1 denotes a protective barrier strand, like it is especially rural, preferably wooded Environment, next to a lane 2 is arranged.

The guardrail strand 1 essentially has one First spar 3 running parallel to roadway 2 round tree trunk sections 4 (see also FIGS. 2 to 4). The Firstholm 3 is on vertical posts 5 with a C-shaped cross section attached to the bottom 6 are rammed. The surfaces of the posts 5 are with provided with a coating that has a wood character.

As can be seen in FIGS. 2, 3, 5 and 6, there is each tree trunk section 4 from two trunk halves 7, 8. The parting plane TE of the stem halves 7, 8 runs vertically.

It can be seen from FIGS. 1 and 5 that in the connection area 9 two tree trunk sections 4 the trunk halves 7, 8 arranged offset to one another in the longitudinal direction are. In this way, like FIG. 6 reveals a total of twelve bolts 10 in pairs be provided with nuts 11 to the trunk halves 7, 8 of two abutting tree trunk sections 4 connect securely. The bolts 10 penetrate holes 12 in the stem halves 7, 8 (Figure 6), with their heads 13 in depressions 14 of the Stem halves 8 lie. The nuts 11 are also in depressions 15 of the stem halves 7.

In the embodiment of a guardrail strand 1 according to Figures 1 to 6 are the tree trunk sections 4 in steel shells 16 open to the top stored and with the shells 16 connected by wood screws 17 (figures 2 and 4). For this purpose, 16 corresponding holes are in the shells 18 provided. The shells 16 extend over the lower half of the circumference of the tree trunk sections 4.

Dashed lines in FIG. 2 also shown that the log sections 4 also fixed to the shells 16 by means of band clamps 28 could be. The band clamps 28 encompass the tree trunk sections 4 and the side areas of the shells 16. The wood screws 17 also serve to secure them.

As can be seen from FIGS. 1 to 4, the shells are 16 with steel slip sleeves which are rectangular in cross section 19 welded to the top ends of the posts 5 overlap positively. The slip sleeves 19 are with the post 5 over two predetermined breaking screws arranged one above the other 20 connected (Figures 2 and 4). To do this Corresponding elongated holes 21 are provided in the slip sleeves 19.

From Figures 2, 3, 5 and 6 it can be seen that between the trunk halves 7, 8 of the tree trunk sections 4 Traction element 22 in the form of an upright flat belt is incorporated. The tension element 22 is in particular made of a polyester fabric. It stretches throughout the entire length of the ridge spar 3. Es can in each case when installing the guardrail strand 1 a trunk half 7 or 8 of a log section 4 can be tacked on. Here it is from a supply roll unwound. When connecting the stem halves 7, 8 of a log section 4, the tension element 22 is then with pierced and, as can be seen from Figures 5 and 6 is fixed between the stem halves 7, 8 incorporated. The width (height) of the tension element 22 corresponds the diameter of the ridge spar 3.

The embodiment of a guardrail strand 1a of the figure 7 sees a ridge spar 3a and between the ridge spar 3a and the bottom 6 another parallel center spar 23 before.

The Firstholm 3a consists of vertically divided tree trunk sections 4a. These in turn consist of each two stem halves 7a, 8a together, in the vertical Abut cross planes QE of posts 5a. The upper ends of the posts 5a are made of slip sleeves 19a (see also FIG. 8), which can be seen in Vertical straps 24 extending in the longitudinal direction Wear elongated holes 25. The middle of the top ends of the Slip sleeves 19a welded tabs 24 are then in the parting plane TE of the stem halves 7a, 8a next to the through the first member 3a extending traction element 22. Die Connection is made using bolts 10 and nuts 11, as shown in Figure 6.

The slip sleeve 19a according to FIG. 8 is also via a Breaking screw 20a with a C-shaped post 5a connected.

The central spar 23 also consists of tree trunk sections 4b, which are composed of two stem halves 7b, 8b. Each log section 4b extends from post 5a to post 5a. The connection is made via extending in the parting plane TE of the center spar 23 Tabs 26 with elongated holes 27 (Figure 9), the front welded to cross-sectionally rectangular slip sleeves 19b are, which embrace the posts 5a and by means of two predetermined breaking screws 20b on the posts 5a are set. The center spar 23 can also between the Post 5a may be provided with a tension element 22. The Slip sleeves 19b are provided with vertical elongated holes 28.

REFERENCE NUMBERS

1 -

A protective barrier
1a - guard rail

2 -

roadway

3 -

Firstholm v. 1
3a - Firstholm v. 1a

4 -

Tree trunk sections v. 3
4a - tree trunk sections from 3a
4b - log sections from 23

5 -

Post v. 1
5a - Post from 1a

6 -

ground

7 -

Stem halves v. 4
7a - stem halves of 4a
7b - stem halves from 23

8th -

Stem halves v. 4
8a - stem halves of 4a
8b - stem halves of 23

9 -

Connection areas v. 4

10 -

bolts

11 -

nuts

12 -

drilling

13 -

Heads of 10

14 -

Depressions f. 13

15 -

Depressions f. 11

16 -

Peel

17 -

wood screws

18 -

Holes in 16

19 -

slip sleeves
19a - slip sleeves
19b - slip sleeves

20 -

Break screws
20a - breaking screws
20b - predetermined breaking screws

21 -

Elongated holes in 19th

22 -

tension element

23 -

mid Holm

24 -

Laschen v. 19a

25 -

Elongated holes in 24

26 -

Laschen v. 19b

27 -

Elongated holes in 26

28 -

clamps

QE -

transverse planes

TE -

Dividing plane between 7, 8; 7a, 8a; 7b, 8b

Claims (7)

1. An impact barrier section along a roadway (2), comprising a ridge member (3, 3a) extending substantially parallel to the roadway (2) and consisting of tree trunk sections (4, 4a), which abut one another at the ends and are carried by metal posts (5, 5a) rammed into the ground (6) next to the roadway (2) and are connected to said posts via slip sleeves (19, 19a) and predetermined breaking screws (20, 20a), the tree trunk sections (4, 4a) being divided vertically and consisting of two trunk halves (7, 8; 7a, 8a) interconnected by screwbolts (10) and nuts (11), the ridge member (3, 3a) having a flexurally elastic tension element (22) extending through it in the longitudinal direction, characterised in that the tension element (22) is formed as a flat belt of a textile material and/or plastic and is incorporated on edge between the trunk halves (7, 8; 7a, 8a) of the tree trunk sections (3, 3a).
2. An impact barrier section according to claim 1, characterised in that the tension element (22) is attached to at least one trunk half (7, 8; 7a, 8a) of each tree trunk section (3, 3a).
3. An impact barrier section according to claim 1 or 2, characterised in that the tree trunk sections (3) are fixed in shells (16) which are open at the top and are connected to the slip sleeves (19).
4. An impact barrier section according to claim 3, characterised in that the tree trunk sections (3) are fixed on the shells (16) by clips (28).
5. An impact barrier section according to claim 1 or 2, characterised in that the tree trunk sections (3a) are fixed to plates (24) connected to the slip sleeves (19a) and extending in the vertical parting plane (TE) between the trunk halves (7a, 8a).
6. An impact barrier section according to any one of claims 1 to 5, characterised in that the trunk halves (7, 8) are offset from one another in the longitudinal direction in the zone (9) of the connection of two tree trunk sections (3).
7. An impact barrier section according to any one of claims 1 to 5, characterised in that a parallel central member (23) consisting of halved tree trunk sections (7b, 8b) abutting one another at the ends is provided in the height zone between the ridge member (3a) and the ground (6), said tree trunk sections (7b, 8b) extending from one post (5a) to another (5a) and being fixed thereon by slip sleeves (19b), predetermined breaking screws (20b) and plates (26) projecting in the longitudinal direction from the slip sleeve (19b).

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