EP1995382A1 - Steel lead sleeper string for motor vehicles - Google Patents

Abstract

Guide threshold string made from steel comprises guide housings (1) formed on one side from a screw bolt passing through the housings and on the other side from a screw nut in the upper region of coupling units and pockets (12) of intersecting metal sheets fixed in vertical slots in a front wall (6) of one guide housing. Preferred Features: The screw nut is fixed to the inner side of a front wall of one guide housing whilst an opening is provided in a starting wall (3) of a guide housing at the height of the screw bolt.

Description

The invention relates to a steel guardrail for motor vehicles according to the features in the preamble of claim 1.

Such a Leitschwellenstrang counts in the scope of EP 1 418 274 B1 to the state of the art. He has releasably juxtaposed, downwardly open guide housing, each comprising two roof-shaped inclined lateral Anfahrwände, an upper horizontal web, two lower, lateral, oblique Aufstandsschenkel with downward edge-side folds and two end walls. In the lower height range of a 1.Stirnwand each Leitgehäuses collar upwardly open receiving pockets before. As a counterpart to this, the lower height range of the other 2nd end wall is designed in the form of downwardly directed tabs. Further, in the upper height regions of the end walls coupling means are integrated, on the one hand from an angle piece with a downwardly directed leg on the second end wall and from upwardly facing tabs on the first end wall consist. The tabs open into a recess of the horizontal web of the guide housing.

Above the Leitschwellenstrangs extends a Leitholmstrang, which consists of individual downwardly open Leitholmen, which are associated with the guide housings. The guide rails are distanced to the guide housings by means of vertical posts. The guide rails have at one end face angle pieces with upwardly directed legs. Behind these legs grasp the end faces of the adjacent Leitholme.

While Leitschwellenstränge the type described above are predominantly used where there is sufficient space for their installation in addition to a roadway for motor vehicles, are in the scope of DE 39 28 793 C2 or the DE 298 15 850 U1 Leitschwellenstränge known that require a small space for their installation due to their special design and therefore be used where between two separate lanes - mostly in construction sites - only little space is available.

Both types of Leitschwellensträngen mentioned above have proven in practice absolutely. While the Leitschwellenstrang mentioned above corresponds to the containment level T3, the above-mentioned, designed for a small installation space Leitschwellenstränge are basically parked only on the containment levels T1 and T2. These Leitschwellenstränge thus do not meet the requirement of DIN 1317 Part 2 or the current requirements of the road authorities with regard to higher containment levels.

The invention is - based on the prior art - the object to provide a steel barrier for motor vehicles, which requires only small footprint, manufactured with little effort and can be mounted and the containment level T3 in accordance with the requirement DIN 1317 Part 2 is sufficient ,

The solution to this problem consists in the features of claim 1. The invention makes use of the findings, which has gained practice from the use of those Leitschwellenstränge consisting of lower guide housings and additional upper Leitholmen. That it arranges in the lower height ranges of two successive Leitshäusen a Leitschwellenstrangs the known receiving pockets and downwardly directed tabs and adds these connecting means in the upper height ranges of the Leitgehäuse simple coupling means passing on the one hand from holes in the opposite end walls of the Leitgehäuse Bolt and on the other hand consist of nuts.

When mounting a Leitschwängenstrangs need now only the successive Leitgehäuse via the tabs and receiving pockets vertically joined together and then connected in the upper height ranges by means of bolts and nuts tensile strength to each other to ultimately provide a Leitschwellenstrang the practice available, which meets the requirements the retention level T3 completely corresponds. That This Leitschwellenstrang has the same good deflection properties of the known Leitschwellenstränge for small footprint with low Formaggressivität.

Another advantage of the invention is that the guide housing can now be unloaded directly from a truck with the help of a mostly existing on this crane and assembled to the desired Leitschwellenstrang. Also, two or more Leitgehäuse (depending on the length of the truck) factory pre-assembled and provided in this pre-assembled manner at the installation site. This considerably reduces the assembly time for a main barrier string.

The production of the guide housing according to the invention is considerably simplified. The baffles are folded over their entire length in one piece from a sheet to form the complete outer contour. face side then only need the previously prepared in advance with the receiving pockets and tabs prepared end walls, in particular to be welded.

The length of the Leitgehäuse can be up to 6,000.00 mm taking into account modern production capacities. Accordingly, the practice of Leitgehäuse can be provided with different lengths. It is also possible to provide baffles with oblique end faces in order to create angled guide sill strands. Furthermore, angled guide housings are conceivable.

In order that the components of the coupling means in the upper height regions of the end walls of the baffles forming nuts are clearly positioned and can not be lost during transport of the guide housing from the factory to the installation site and during assembly, the features of claim 2 provide that each nut on the Inside an end wall of a guide housing is attached. The attachment is preferably carried out by means of a welding operation. To handle the bolts openings in the Anfahrwänden the guide housing are provided in the height ranges of the bolts. Through these openings, both the bolts can be manually threaded through the holes in the two frontally opposing baffles and screwed into the nuts, as well as finally tightened properly with a torque wrench.

In view of the fact that the guide housings are made of a comparatively thin sheet metal, in particular 3 mm thick, it is advantageous according to claim 3 that each nut is fixed to a reinforcing sheet, in particular welded, to the inside of an end wall of a lead frame , in particular by welding, is attached.

Taking into account the thickness of the sheets for the guide housing, it is also useful according to claim 4, that for supporting a bolt head a Reinforcing plate on the inside of an end wall of a guide housing, preferably by welding, is attached.

So that in the coupling of two Leitgehäuse the fitter of the necessary bolts is directly available, the features of claim 5 provide that below the reinforcing plate for a bolt head a nut for receiving a bolt on the inside of the end wall of a guide housing is attached. The attachment is accomplished by means of a tack weld on the inside. In this mother is still screwed in the factory of the bolt and can therefore be used directly during assembly by the installer.

If necessary, instead of a nut, a thread can also be introduced into an end wall into which the bolt can be screwed for transport and for provision at the installation site.

The necessary stability of the receiving pockets on the first end wall of a guide housing is ensured by the features of claim 6, characterized in that the receiving pockets formed by vertically slotted in the first end wall of a guide housing gusset plates and parallel to the first end wall extending web plates are, which are fixed at a distance to the outside of the first end wall between the gusset plates. Preferably, three gusset plates and two web plates are provided. Again, the attachment of the gusset plates in the slots and the connection of the web plates with the gusset plates by means of welding operations. The slots do not go to the lower transverse edge of the first end wall, so that their stability is not significantly affected.

To increase the torsional stiffness of the gusset plates protrude into the interior of a guide housing and are stiffened here according to claim 7 by means of horizontal base plates. The base plates are welded between the gusset plates.

The extending from the insides of the 1st and 2nd end walls in the interior of a guide housing horizontal stiffening plates above the receiving pockets and the tabs according to claim 8 increase the stability of the end portions of the guide housing, especially in an impact of obliquely from the front.

According to the features of claim 9, feed sheets are releasably secured in the receiving pockets. The lining sheets are determined in particular by means of screws. On the one hand, they have the task of removing the play between the tabs and the receiving pockets when threading the tabs into the receiving pockets and, on the other hand, allow two successive guide shells to be arranged at an angle to one another. Since two receiving pockets are usually arranged side by side, at least one lining sheet can be removed from the one receiving pocket. In this way, the tongue in the receiving pocket with a lining sheet less a bigger game. Consequently, the two successive Leitgehäuse can then be arranged at an angle to each other when the located in the upper height range screwing be tightened.

In order to bridge the resulting space in an angled portion of two successive guide housings in this context in the upper height ranges of the guide housing, the features of claim 10 provide that in these height ranges of the bolts and nuts spacers between the end walls of two successive guide housings are einkliederbar. These are in particular U-shaped spacer plates, which can be pushed laterally over the bolts during assembly and then rotated upwards. Then, when the screw and the Leitgehäuse are aligned, the desired curve is fixed.

The stability of the guide housing between the end-side end walls is increased according to the features of claim 11, characterized in that in the height ranges of the tread, the transitions from the Anfahrwänden are adapted to the Aufstandsschenkel and the folds to the lower inner contour of a guide housing, transversely extending support shoes are incorporated. The number of support shoes depends on the length of a guide housing. For practical reasons, it makes sense to arrange the support shoes at a distance of 1,500 mm.

So that water can reach from the one to the other side of a Leitschweltenstrangs in rainfall, is provided according to claim 12, that in the height ranges of the tread, the transitions from the Anfahrwänden on the treads and the folds recesses are provided, in which the lower inner contour a Leitgehäuses adapted, transversely extending, longitudinally channeled support shoes are incorporated. These support shoes then not only take over the stabilization of a guide housing, but also the transfer of water from one side to the other.

To reduce the lateral displacement in an impact of a motor vehicle, the features of claim 13 provide that the undersides of the support shoes are provided with the friction resistance increasing means. Such means may, for example, be spot welds or adhesives under the support skids or else more holes in the skids.

However, the means are preferably formed according to claim 14 of rubber studs, which are pressed into recesses in the undersides of the support shoes. Such rubber knobs have circumferential constrictions, with which they are kept perfectly at the edges of the recesses. The extending into the support shoes sections of the rubber studs are frustoconical. In this way, the rubber studs can be easily pressed into the recesses.

Figur 1

in perspektivischer Darstellung drei Leitgehäuse eines Leitschwellenstrangs mit unterschiedlichen Längen;

Figur 2

ebenfalls in perspektivischer Darstellung die Endabschnitte zweier aufeinander folgender Leitgehäuse, teils aufgeschnitten;

Figur 3

in einer anderen perspektivischen Darstellung die Endabschnitte zweier Leitgehäuse, teils aufgeschnitten;

Figur 4

die Endabschnitte zweier miteinander gekoppelter Leitgehäuse von schräg unten gesehen;

Figur 5

einen vertikalen Querschnitt durch einen Stützfuß eines Leitgehäuses und

Figur 6

in perspektivischer Darstellung einen Gumminoppen für einen Stützfuß.

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

FIG. 1

in perspective view of three Leitgehäuse a Leitschweltenstrangs with different lengths;

FIG. 2

likewise in perspective view the end sections of two successive guide housings, partly cut open;

FIG. 3

in another perspective view, the end portions of two Leitgehäuse, partly cut open;

FIG. 4

seen from obliquely below the end portions of two coupled Leitgehäuse;

FIG. 5

a vertical cross section through a support leg of a guide housing and

FIG. 6

in perspective view a rubber knobs for a support foot.

With 1, 1 a and 1b are in the FIG. 1 different lengths versions of a guide housing for a Leitschwellenstrang LST called. The downwardly open guide housing 1, 1 a, 1 b are folded from a sheet and are each composed of an upper horizontal web 2, two adjoining the web 2, roof-shaped inclined side Anfahrwänden 3, two lower, lateral, oblique tread legs 4 with downwardly directed, edge-side folds 5 and two end walls 6, 7 together. The end walls 6, 7 are welded to the finished edges in the contour of a guide housing 1, 1 a, 1 b. The transitions 8 between the saddle legs 4 and the Anfahrwänden 3 are rounded.

At a suitable distance from each other (eg 1500 mm) are in the height ranges of the tread leg 4, the transitions 8 and the folds 5 to the lower inner contour of a guide housing 1, 1 a, 1b adapted, transversely extending support shoes 9 incorporated. As in this context the FIG. 4 can recognize some of these support shoes 9 may be provided with a longitudinal channel 10. This longitudinal channel 10 opens into recesses 11 of the tread leg 4, the transitions 8 and the folds 5, as also with reference to FIG. 1 can be seen. For example, in the case 1 of the FIG. 1 two longitudinally channeled support shoes 9 and two non-channeled support shoes 9 are provided. The non-channeled support shoes 9 are illustrated in dash-dotted lines.

At the first end wall 6 of a guide housing (it is described as an example, the guide housing 1) are located opposite the first end wall 6 projecting, upwardly and downwardly open receiving pockets 12 (see also FIG. 3 ). These receiving pockets 12 are formed by three in three vertical slots 13 in the first end wall 6 welded triangular gusset plates 14, the outer side 15 of the first end wall 6 and two parallel to the first end wall 6 extending web plates 16 which are spaced from the outside 15th are welded between the outside ends of the gusset plates 14. In addition, in the receiving pockets 12 (s. FIG. 3 ) at least one below explained in more detail lining plate 39 may be present. Such a lining plate 39 is fixed locally by means of at least one screw 41. The sections of the gusset plates 14 extending into the interior of the guide housing 1 are connected at their lower longitudinal edges by means of two welded-in base plates 17 (see also FIG FIG. 2 ).

Above the gusset plates 14 extends a horizontal stiffening plate 18 which extends from the inside 19 of the first end wall 6 into the interior of the guide housing 1.

Furthermore, let the Figures 2 and 3 recognize that in the upper height range of the first end wall 6 on the circumferential side of a bore 20, a rectangular reinforcing plate 21 is welded to the inside 19. On this reinforcing plate 21, a nut 22 is welded, the thread of which is aligned coaxially with the bore 20.

At the 2nd end wall 7 of a guide housing 1, two downwardly facing tabs 23 are formed in the lower height range, of three vertical Slits 24 in the second end wall 7 and a lower recess 25 are limited. The tabs 23 are adapted to the receiving pockets 12, taking into account the thickness of the lining sheet 39.

Above the tabs 23, a horizontal stiffening plate 26 extends into the interior of the guide housing 1. The stiffening plate 26 is welded to the inside 27 of the second end wall 7.

With height distance to the stiffening plate 26, a nut 28 is welded to the inside 27. The nut 28 serves to receive a bolt 29 during the transport of the guide housing. 1

Again, above the nut 28, a rectangular reinforcement plate 31 is welded on the inside 27 on the circumference of a bore 30 in the second end wall 7. The reinforcing plate 31 serves to bear the head 42 of the bolt 29 when it is inserted through the holes 30 in the second end wall 7 and 20 in the first end wall 6 to connect the two guide housing 1.

Furthermore, let the FIGS. 1 to 3 still recognize that in the height range of the bore 30 in the second end wall 7, a circular opening 32 is provided in a starting wall 3. This is a mounting opening for handling the bolt 29.

From the FIGS. 4 to 6 it can be seen that 9 round rubber studs 35 are defined in recesses 33 of the lower sides 34 of the support shoes. The rubber nipples 35 have peripheral constrictions 36 into which the edge regions 37 of the recesses 33 engage. The sections 38 of the rubber nubs 35 above the lower surfaces 34 are frustoconical designed to easily press the rubber nubs 35 in the recesses 33 can. That is, the upper diameter D of each portion 38 is smaller than the diameter D1 of a recess 33, while the lower diameter D2 of each portion 38 is sized larger than a recess 33.

During the installation of a Leitschwellenstrangs LST ( Figures 2 and 3 ), the guide housing 1 can be mounted regardless of their length directly from a truck, which has brought the guide housing 1 to the mounting location. After setting up the first guide housing 1 (for example, the left guide housing 1 according to FIG. 2 ), the next Leitgehäuse 1 is lowered by means of a crane located on the truck from above so that the tabs 23 of the next case 1 engage in the receiving pockets 12 of the already deposited Leitgehäuses 1. Then needs a fitter on the opening 32 only the screw 29 from the nut 28 inside the second end wall 7 unscrew, thread through the holes 30, 20 in the two end walls 7, 6 and in the from the FIG. 2 screw in recognizable nut 22 of the previously deposited guide housing 1. With a torque wrench then the perfect axial connection can be fixed.

If two guide housings 1 are to be connected to one another in a horizontal bend, then first one of the lining sheets 39 can be removed from one of the receiving pockets 12. The corresponding tongue 23 thus has in this receiving pocket 12 a greater game. Will then possibly still a U-shaped, in the FIG. 2 in dash-dotted lines illustrated spacer plate 40 inserted between the end walls 6 and 7 to the bolt 29 obliquely from the outside and then rotated according to the arrow PF upwards, then the desired bending is then secured in the upper height range after tightening the bolt 29.

Reference numerals:

1

Guide housing
1a Leitgehäuse
1b guide housing

2

Bridge v. 1, 1a, 1 b

3

Anfahrwände

4

Riot leg

5

bends

6

1. front wall

7

2nd end wall

8th

Transitions v. 3 on 4

9

support shoes

10

Longitudinal channels in 9

11

Recesses in 4, 5, 8

12

receiving pockets

13

Slits in 6

14

gusset plates

15

Outside v. 6

16

web plates

17

base plates

18

gussets

19

Inside v. 6

20

Hole in 6

21

Support panel

22

mother

23

tabs

24

Slits in 7

25

Recess in 7

26

gusset

27

Inside v. 7

28

mother

29

bolts

30

Hole in 7

31

Support panel

32

Opening in 3

33

Recesses in 34

34

Subpages v. 9

35

rubber studs

36

constrictions

37

Border areas v. 34

38

Sections v. 35

39

Shims

40

shims

41

screw

42

bolt head

D

upper diameter v. 38

D1

Diameter v. 33

D2

lower diameter v. 38

LST

A crash barrier

PF

arrow

Claims (14)

Steering steel (LST) steel for motor vehicles, which releasably juxtaposed, downwardly open Leitgehäuse (1), each having two roof-shaped inclined lateral Anfahrwände (3), an upper horizontal bar (2), two lower, lateral, sloping turf legs ( 4) with downwardly directed edge-side folds (5) and two end walls (6, 7), wherein projecting in the lower height range of a first end wall (6) of each guide housing (1) upwardly open receiving pockets (12) and the lower height range of the other 2. end wall (7) in the form of downwardly directed tabs (23) is formed, while in the upper height regions of the end walls (6, 7) coupling means (22, 29) are integrated, characterized in that the two successive Leitgehäuse (1 ) connecting in the upper height range coupling means (22, 29) on the one hand from bores (20, 30) in the mutually opposite end walls (6, 7) of the guide housing (1) durchset Zenden bolt (29) and on the other hand from nuts (22) are formed. Guideline according to claim 1, characterized in that each nut (22) on the inside (19) of an end wall (6) of a guide housing (1) is fixed, while in the height range of a bolt (29) has an opening (32) in a Anfahrwand ( 3) of a guide housing (1) is provided. Guideway according to claim 1 or 2, characterized in that each nut (22) is fixed to a reinforcing plate (21) which is fixed to the inside (19) of an end wall (6) of a guide housing (1). Guideway according to one of claims 1 to 3, characterized in that for supporting a bolt head (42) a reinforcing plate (31) on the inside (27) of an end wall (7) of a guide housing (1) is fixed. Guideway according to claim 4, characterized in that below the reinforcing plate (31) for a bolt head (42) a nut (28) for receiving a bolt (29) on the inside (27) of the end wall (7) of a guide housing (1) attached is. Guideline according to one of claims 1 to 5, characterized in that the receiving pockets (12) of in the outer slots (13) in the first end wall (6) of a guide housing (1) fixed gussets (14), from the outside (15) the first end wall (6) and parallel to the first end wall (6) extending web plates (16) are formed, which at a distance to the outside (15) of the first end wall (6) between the gusset plates (14) are. Guided threshold according to claim 6, characterized in that the gusset plates (14) in the interior of a guide housing (1) by means of horizontal base plates (17) are stiffened. Guideline according to one of claims 1 to 7, characterized in that the first and second end walls (6,7) of a guide housing (1) above the receiving pockets (12) and the tabs (23) with them from their inner sides (19, 27) of extending horizontal stiffening plates (18, 26) are provided. Guideway according to one of claims 1 to 8, characterized in that in the receiving pockets (12) lining plates (39) are releasably attached. Guideway according to one of claims 1 to 9, characterized in that in the height range of the bolts (29) and nuts (22) spacer plates (40) between the end walls (6, 7) of two consecutive guide housings (1) are einliederbar. Guidance bar according to one of claims 1 to 10, characterized in that in the height range of Aufstandsschenkel (4), the folds (5) and the transitions (8) between the support legs (4) and the Anfahrwänden (3) to the lower inner contour of a guide housing (1) adapted, transversely extending support shoes (9) are incorporated. Guidance bar according to one of claims 1 to 10, characterized in that in the height range of the tread arm (4), the folds (5) and the transitions (8) between the tread limbs (4) and the Anfahrwänden (3) recesses (11) are provided , in which on the lower inner contour of a guide housing (1) adapted, transversely extending longitudinally channeled support shoes (9) are incorporated. Guideway according to claim 11 or 12, characterized in that the lower sides (34) of the support shoes (9) are provided with the friction resistance increasing means (35). Guideline according to claim 13, characterized in that the means (35) are formed by rubber nubs, which are pressed into recesses (33) in the lower sides (34) of the support shoes (9).

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