DE102007023788B3 - Steel threshold for motor vehicles - Google Patents

Abstract

The Leitschwellenstrang (LST) has releasably juxtaposed, downwardly open Leitgehäuse (1). These each comprise two lateral start-up walls (3), an upper web (2), two lower support legs (4) with downwardly directed folds (5) and two end walls (6, 7). In the lower height range of a first end wall (6) of each guide housing (1) collar upwardly open receiving pockets (12) before. The lower height range of the other second end wall (7) is in the form of downwardly directed tabs (23). In the upper height range of the end walls (6, 7) coupling means are provided, on the one hand from bores (20, 30) in the opposite end walls (6, 7) of the guide housing (1) passing through bolts (29) and on the other hand formed from nuts which are welded to the inner sides of the first end wall (6).

Description

The The invention relates to a steel guardrail for motor vehicles according to the characteristics 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. Furthermore, coupling means are integrated into the upper height regions of the end walls, which on the one hand consist of an angle piece with a downwardly directed leg on the second end wall and of upwardly pointing tabs on the first end wall. The tabs open into a recess of the horizontal web of the guide housing.

Above the Leitschwellenstrangs extends a Leitholmstrang, the consists of individual downwardly open Leitholmen associated with the guide housings are. The Leitholme are the Leitgehäusen by means of vertical posts distant. The guide rails have at one end face contra angles upwardly directed thighs. Grasp behind these thighs 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 mentioned above Types of Leitschwellensträngen have proven themselves in practice absolutely. During the aforementioned Leitschwellenstrang the containment level T3, the above stated, for one small installation space designed Leitschwellenstränge in principle only on the containment levels T1 and T2 turned off. These Leitschwellenstränge thus do not suffice the regulation DIN 1317 part 2 or the today's requirements of the Road construction offices in With regard to higher ones Containment levels.

The prior art also includes the Leitschwellenstrang the WO 2007/036 239 A1 , In this Leitschwängenstrang the end walls of two successive Leitgehäusen in the lower, middle and upper height range are connected by means of bolts, elastic spacers and nuts, that the two Leitgehäuse can be angled in the horizontal to each other. To handle the fasteners a plurality of recesses is provided in the walls and in the webs of the guide housing. In addition, an end wall of each guide housing at the lower end with a welded or bolted shoe is provided. A vertical leg of this shoe, together with the end wall carrying the shoe, forms a pocket into which the end wall of the adjacent guide housing can be inserted from above. For the purpose of centering, an upwardly pointing wedge may be provided in the pocket, which is overlapped by a cutout adapted to the wedge in the insertable end wall.

Of the Invention is - starting from the prior art - the Task based, a steel threshold for motor vehicles to create, which requires only small Hufstellflächen, with low Effort can be produced and assembled and the containment level T3 according to the regulation DIN 1317 Part 2 is sufficient.

The solution this object consists in the features of claim 1.

The This invention makes use of the findings, which the Practice gained from the use of those Leitschwellenstränge has, from lower guide housings and additional consist of upper Leitholmen. Ie. she arranges in the lower altitude ranges of two successive Leitshellstrangs a Leitschwellenstrangs the known receiving pockets and downwards Tabs and adds these connection means in the upper height ranges of the Leitgehäuse simple Add coupling agent, on the one hand from a hole in the opposite each other end walls the Leitgehäuse passing bolt and on the other hand consist of a mother.

The necessary stability of the receiving pockets on the first end wall of a guide housing is ensured by the fact that the receiving pockets are formed by in vertical slots in the first end wall of a guide housing attached gussets and parallel to the first end wall extending web plates extending at a distance to the outside of the first end wall are fastened between the gusset plates. Preferably, three gusset plates and two web plates are provided. Here too the fastening 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 end in front of the lower transverse edge of the first end wall, so that their stability is not significantly impaired.

at the installation of a Leitschwängenstrangs need now only the successive Leitgehäuse over the tabs and receiving pockets vertically joined together and then in the upper altitude ranges by means of bolts and nuts tensile strength connected to each other to ultimately become a Leitschwellenstrang practice for disposal which completely meets the requirements of containment stage T3 equivalent. Ie. this Leitschwellenstrang has the same good deflection properties of the known Leitschwellenstränge for small Hufstellflächen with low form aggressiveness.

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

Also the production of the guide housing according to the invention is considerably simplified. The Leitgehäuse be over her entire length one piece folded from a sheet to form the complete Outer contour. Front then need only the advance with the receiving pockets and insertion tongues ready prepared end walls inserted, in particular to be welded.

The Length of Guide housing can be under consideration modern production capacities up to 6,000.00 mm. Accordingly, practice Leitgehäuse with different lengths to disposal be put. It can also Leitgehäuse with oblique End faces are provided to provide angled Leitschwellenstränge. Of Furthermore, angled guide housings are conceivable.

In order to the constituents of the coupling agent in the upper altitude ranges the end walls the baffles forming nuts are clearly positioned and during the Transport of the guide housing from the factory to the assembly site as well as during the assembly can not be lost, see the characteristics of Claim 2, that each nut on the inside of an end wall attached to a Leitgehäuses is. The attachment is preferably carried out by means of a welding operation. To handle the bolts are openings in the height ranges of the bolts in the approach walls the Leitgehäuse intended. Through these openings can both the bolts by hand through the holes in the two frontal opposite each other baffles threaded and screwed into the nuts, and ultimately with a torque wrench be properly tightened.

in the With regard to the facts that the Leitgehäuse from a comparatively thin sheet metal made of particular 3 mm thickness, it is according to claim 3 is advantageous in that each nut is fixed to a reinforcing plate, in particular welded is that on the inside of an end wall of a guide housing, in particular by means of weld, is attached.

Under consideration the thickness of the sheets for the Leitgehäuse it is also useful according to claim 4, that for supporting a Bolt head a reinforcement plate on the inside of an end wall of a guide housing, preferably by welding, attached is.

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

Instead of If necessary, a nut can also be threaded into an end wall are introduced, in which the bolt for transport and Provision can be screwed in at the installation site.

to increase The torsional rigidity of the gusset plates protrude into the interior a Leitgehäuses into and here are according to claim 6 by means of horizontal base plates stiffened. The base plates are welded between the gusset plates.

The extending from the insides of the 1st and 2nd end walls into the interior of a stator shell extending horizontal stiffening plates above the receiving pockets and the tabs according to claim 7 increase the stability of the end portions the baffle, in particular during an impact process obliquely from the front.

According to the features of claim 8 Filler 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.

Around in this context also in the upper height ranges of the Leitgehäuse at a bend of two consecutive Leitgehäusen the to bridge the resulting free space, see the features of claim 9, that in these height ranges the bolts and nuts spacers between the end walls of two successive Leitgehäusen are einkliederbar. These are in particular U-shaped Distance plates, which pushed laterally over the bolts during assembly and subsequently can be turned upwards. If then the bolted connection and the baffles are aligned is the desired trackability fixed.

The stability the Leitgehäuse between the end-side end walls becomes according to the characteristics of claim 10 thereby increased that in the height ranges the riot, the transitions of the Anfahrwänden on the ridges and the folds to the lower inner contour a Leitgehäuses adapted, transversely extending support shoes are incorporated. The number of support shoes depends on the length a Leitgehäuses from. For practical reasons It makes sense to put out the support shoes to be arranged at a distance of 1,500 mm.

In order to in rainfalls Water from one side to the other side of a guardrail can reach, is provided according to claim 11, that in the height ranges the riot, the transitions of the approach walls provided on the uprising legs and the folds recesses are, in which adapted to the lower inner contour of a guide housing, transversely extending, longitudinally channeled support shoes are incorporated. Take over these support shoes then not only the stabilization of a Leitgehäuses, but also the transfer of the Water from one side to the other.

Around the lateral displacement in an impact of a motor vehicle to reduce, the features of claim 12 provide that the Bottoms of the support shoes with the friction resistance increasing Means are provided. Such agents may be, for example around welds or Glue under the skids Act or even more holes in the skids.

Prefers However, the funds are formed according to claim 13 of rubber dots, which are pressed into recesses in the undersides of the support shoes. Such rubber knobs have circumferential constrictions, with which they at the edges of the Recesses are kept properly. The in the support shoes reaching in sections of rubber studs are frustoconical. That way you can The rubber studs are easily pressed into the recesses.

The Invention is described below with reference to the drawings embodiments explained in more detail. It demonstrate:

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

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

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

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

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

6 in perspective view a rubber knobs for a support foot.

With 1 . 1a and 1b are in the 1 different lengths versions of a guide housing for a Leitschwellenstrang LST called. The downwardly open baffle 1 . 1a . 1b are folded from a sheet metal and are each made up of an upper horizontal web 2 , two at the jetty 2 adjoining, roof-shaped inclined side approach walls 3 , two lower, sideways, oblique rims 4 with downward, edge-sided bends 5 and two end walls 6 . 7 together. The end walls 6 . 7 Be after the finished edges in the contour of a Leitgehäuses 1 . 1a . 1b shrink wrapped. The transitions 8th between the riot thighs 4 and the Anfahrwänden 3 are rounded.

At a suitable distance from each other (eg 1,500 mm) are in the height ranges of the Aufstandsschenkel 4 , the transitions 8th and the bends 5 to the lower inner contour of a guide housing 1 . 1a . 1b adapted, transversely extending support shoes 9 incorporated. As in this context the 4 can recognize some of these support shoes 9 with a longitudinal channel 10 be provided. This longitudinal channel 10 flows into recesses 11 the riot thigh 4 , the transitions 8th and the bends 5 as well as the 1 can be seen. For example, in the case 1 of the 1 two longitudinally channeled support shoes 9 and two non-channeled support shoes 9 intended. The non-channeled support shoes 9 are illustrated in dash-dotted lines.

At the 1st end wall 6 a baffle (it will be exemplified the baffle 1 described) are two opposite the 1st end wall 6 projecting, upwardly and downwardly open receiving pockets 12 (see also 3 ). These storage bags 12 be three in three vertical slots 13 in the 1st front wall 6 welded triangular gusset plates 14 , the outside 15 the 1st end wall 6 and two parallel to the 1st end wall 6 extending web plates 16 formed in the distance to the outside 15 between the outside ends of the gusset plates 14 are welded. Besides, can in the receiving pockets 12 (S. 3 ) at least one below explained closer lining sheet 39 to be available. Such a lining sheet 39 is by means of at least one screw 41 fixed locally. Lying in the interior of the baffle 1 extending portions of the gusset plates 14 be at their lower longitudinal edges by means of two welded base plates 17 connected (see also 2 ).

Above the gusset plates 14 runs a horizontal stiffening plate 18 that is from the inside 19 the 1st end wall 6 out into the interior of the guide housing 1 extends.

Furthermore, let the 2 and 3 recognize that in the upper height range of the 1st end wall 6 on the circumference of a hole 20 a rectangular reinforcement plate 21 on the inside 19 is welded. On this reinforcement plate 21 is a mother 22 welded, whose thread to the bore 20 is aligned coaxially.

At the 2nd end wall 7 a Leitgehäuses 1 are in the lower height range two down-facing tabs 23 formed by three vertical slots 24 in the 2nd front wall 7 and a lower recess 25 are limited. The tongues 23 are taking into account the thickness of the lining sheet 39 to the receiving pockets 12 customized.

Above the tabs 23 extends a horizontal stiffening plate 26 into the interior of the guide housing 1 , The stiffening sheet 26 is on the inside 27 the 2nd front wall 7 welded.

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

Again above the mother 28 is the circumference of a hole 30 in the 2nd front wall 7 a rectangular reinforcement plate 31 on the inside 27 welded. The reinforcement plate 31 serves the plant of the head 42 of the bolt 29 if this through the holes 30 in the 2nd front wall 7 and 20 in the 1st front wall 6 is plugged to the two baffles 1 connect to.

Furthermore, let the 1 to 3 still recognize that in the height range of the bore 30 in the 2nd front wall 7 a circular opening 32 in a starting wall 3 is provided. This is a mounting hole for handling the bolt 29 ,

From the 4 to 6 it can be seen that in recesses 33 the bases 34 the support shoes 9 round rubber knickers 35 are fixed. The rubber knickers 35 have circumferential constrictions 36 into which the edge areas 37 the recesses 33 intervention. The sections 38 the rubber thumbs 35 above the bottoms 34 are frusto-shaped to the rubber knobs 35 easily in the recesses 33 to be able to impress. Ie. the upper diameter D of each section 38 is smaller than the diameter D1 of a recess 33 while the lower diameter D2 of each section 38 larger than a recess 33 is measured.

During the installation of a Leitschwellenstrangs LST ( 2 and 3 ) can the Leitgehäuse 1 regardless of their length can be mounted directly from a truck, which is the Leitgehäuse 1 brought to the installation site. After setting up the first guide housing 1 (For example, the left Leitgehäuse 1 according to 3 will be the next lead case 1 with the help of a crane located on the truck from above lowered so that the tabs 23 of the next case 1 in the receiving pockets 12 of the already detached Leitgehäuses 1 intervention. Subsequently, a mechanic needs over the opening 32 only the bolt 29 from the mother 28 inside the 2nd end wall 7 unscrew through the holes 30 . 20 in the two end walls 7 . 6 thread and into the of the 2 recognizable mother 22 the previously deposited Leitgehäuses 1 Screw. With a torque wrench then the perfect axial connection can be fixed.

Should two Leitgehäuse 1 can be connected together in a horizontal bend, so can first one of the lining sheets 39 from one of the receiving pockets 12 be removed. The corresponding tongue 23 has thus in this receiving bag 12 a bigger game. Will then possibly still a U-shaped, in the 2 in dash-dotted lines illustrated spacer plate 40 between the end walls 6 and 7 around the bolt 29 inserted obliquely from the outside and then rotated according to the arrow PF upwards, then it is also in the upper height range after tightening the bolt 29 secured the desired bend.

1

Guide housing

1a

Guide housing

1b

Guide housing

2

Bridge v. 1 . 1a . 1b

3

Anfahrwände

4

Riot leg

5

bends

6

1. bulkhead

7

Second bulkhead

8th

Transitions v. 3 on 4

9

support shoes

10

Longitudinal channels in 9

11

Recesses in 4 . 5 . 8th

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

Bore 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

Bore 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 (13)

Steel Guideway (LST) for motor vehicles, which releasably abutted, downwardly open Leitgehäuse ( 1 ), each having two roof-shaped inclined side Anfahrwände ( 3 ), an upper horizontal bridge ( 2 ), two lower, lateral, oblique rims ( 4 ) with downwardly directed edge-side folds ( 5 ) and two end walls ( 6 . 7 ), wherein in the lower height range of a first end wall ( 6 ) of each conductive housing ( 1 ) upwardly open receiving pockets ( 12 ) and the lower height range of the other second end wall ( 7 ) in the form of downward tabs ( 23 ) is formed, while in the upper height ranges of the end walls ( 6 . 7 ) Coupling agent ( 22 . 29 ) are integrated, characterized in that the two consecutive Leitgehäuse ( 1 ) in the upper altitude connecting coupling agent ( 22 . 29 ) on the one hand from a bore ( 20 . 30 ) in the opposite end walls ( 6 . 7 ) of the conductive housing ( 1 ) passing through bolt ( 29 ) and on the other hand from a mother ( 22 ) are formed, and that the receiving pockets ( 12 ) in vertical slots ( 13 ) in the first end wall ( 6 ) of a conductive housing ( 1 ) attached gusset plates ( 14 ), from the outside ( 15 ) of the first end wall ( 6 ) and parallel to the first end wall ( 6 ) extending web plates ( 16 ) formed at a distance to the outside ( 15 ) of the first end wall ( 6 ) between the gusset plates ( 14 ) are attached. Guideline according to claim 1, characterized in that each nut ( 22 ) on the inside ( 19 ) an end wall ( 6 ) of a conductive housing ( 1 ), while in the height range of a bolt ( 29 ) an opening ( 32 ) in a starting wall ( 3 ) of a conductive housing ( 1 ) is provided. Guideline according to claim 1 or 2, characterized in that each nut ( 22 ) on a reinforcing plate ( 21 ), which is on the inside ( 19 ) an end wall ( 6 ) of a conductive housing ( 1 ) is attached. Guideline according to one of claims 1 to 3, characterized in that for supporting a bolt head ( 42 ) an amplifier plate ( 31 ) on the inside ( 27 ) an end wall ( 7 ) of a conductive housing ( 1 ) is attached. Guideway according to claim 4, characterized in that below the reinforcing plate ( 31 ) for a bolt head ( 42 ) A mother ( 28 ) for receiving a bolt ( 29 ) on the inside ( 27 ) of the front wall ( 7 ) of a conductive housing ( 1 ) is attached. Guideway according to one of claims 1 to 5, characterized in that the gusset plates ( 14 ) inside a guide housing ( 1 ) by means of horizontal base plates ( 17 ) are stiffened. Guideline according to one of claims 1 to 6, characterized in that the 1st and 2nd end walls ( 6 . 7 ) of a conductive housing ( 1 ) above the receiving pockets ( 12 ) and the tongue ( 23 ) with themselves from their insides ( 19 . 27 ) of extending horizontal stiffening plates ( 18 . 26 ) are provided. Guideline according to one of claims 1 to 7, characterized in that in the receiving pockets ( 12 ) Lining sheets ( 39 ) are releasably attached. Guideway according to one of claims 1 to 8, characterized in that in the height range of the bolt ( 29 ) and nuts ( 22 ) Spacer plates ( 40 ) between the end walls ( 6 . 7 ) of two successive Leitgehäusen ( 1 ) are einkliederbar. Guideline according to one of claims 1 to 9, characterized in that in the height range of the treads ( 4 ), the folds ( 5 ) as well as the transitions ( 8th ) between the rumps ( 4 ) and the Anfahrwänden ( 3 ) to the lower inner contour of a guide housing ( 1 ), transversely extending support shoes ( 9 ) are incorporated. Guidance bar according to one of claims 1 to 9, characterized in that in the height range of the treads ( 4 ), the folds ( 5 ) as well as the transitions ( 8th ) between the rumps ( 4 ) and the Anfahrwänden ( 3 ) Recesses ( 11 ) are provided, in which the lower inner contour of a guide housing ( 1 ) transversely extending longitudinally channeled support shoes ( 9 ) are incorporated. Threshold according to claim 10 or 11, characterized in that the undersides ( 34 ) of the support shoes ( 9 ) with the friction resistance increasing means ( 35 ) are provided. Guided barrier according to claim 12, characterized in that the means ( 35 ) are formed by rubber studs, which in recesses ( 33 ) in the subpages ( 34 ) of the support shoes ( 9 ) are pressed.