DE102006031504B3 - Connector system between crash barriers has plate-type plastics slide elements engaging by studs in bores of posts with conical transitions between ring grooves of studs, facing surfaces of slide elements to minimise play - Google Patents

Abstract

The connector system which is positioned between spacers supporting the barriers and C-section posts (12) includes claws (9) and plate-type slide elements (22) made of weatherproof UV-resistant plastics and engaging by grooved studs (23) in bores (19) in the arms (20) of the posts . Conical transitions (26) are formed between the ring grooves (25) of the studs and the facing surfaces (27) of the slide elements so as to minimise the play between a claw and a post. The heads of the studs adjoining the ring grooves are conical.

Description

The The invention relates to a connection arrangement between a front side a protective barrier of a protective barrier string carrying spacers or spacer and a cross-section C or sigmoidal post according to the features in Preamble of claim 1.

Such a connection arrangement counts within the scope of DE 36 40 821 C1 to the state of the art. It comprises between the legs of a detachably connected to a spacer, in cross-section C-shaped claw and the legs of the claw embraced and coupled with this via predetermined breaking screws, in cross section sigma-shaped post plate-like sliding elements of a weather- and UV-resistant plastic. The sliding elements are provided with annular grooves provided pins which engage in holes in the legs of the post latching.

At the Impact of a motor vehicle on a protective barrier strand causes the impact energy is a bending of the comparatively soft Post. This will make the protective barrier around its longitudinal axis wound and it arises at the attachment points between the Claw and the post an upward force. This will be destroyed the predetermined breaking screws. By the incorporation of the sliding elements between the legs The claws and the legs of the posts will be a friction steel avoided on steel, so that now the claws without noticeable Relocate frictional resistance relative to the posts and of the Can slide down posts. The two remain over the spacers connected protective barrier strands connected with each other. The roadway facing away from the protective barrier However, it is pressed down on the ground and thereby supports the road surface facing protective barrier strand over the spacers from. The entire guard rail arrangement may be in the required Bend way. The impact energy will be in the desired Mode degraded without springback effect and the impacting vehicle along the roadside Guards strand led. As the road facing the protective barrier strand due to the Twisting the guard rail assembly about its longitudinal axis now higher than originally arranged, is excluded that an impacting motor vehicle this Cross the protective barrier can.

Even though the known connection arrangement has proven itself in practice, by that inevitably exists existing game between a claw and a post one not always satisfying slip behavior of the claws in a vehicle crash.

Of the Invention is - starting from the prior art - the Task is based, a connection arrangement between a front side a protective barrier of a protective barrier string carrying spacers or spacer and to provide a cross-section C or sigma-shaped post, in which the slip behavior of the claws in a crash between a vehicle and a guard rail is improved.

The solution This object is according to the invention in the features of the claim 1.

core idea The invention is the formation of conical transitions between the annular grooves on the pins and their facing surfaces of the sliding elements. by virtue of This training can be the game between a claw and a Posts are minimized. The slip behavior of the claw on impact a motor vehicle on a protective barrier is on this Way significantly improved.

In In this context, it is advantageous that the height of the conical transitions about half the width of the annular grooves corresponds (claim 2).

Further It is within the scope of the invention according to the features of the claim 3 considered advantageous that the ratio of the largest diameter the transitions to Diameter of the ring grooves about as 1.5 to 1.75: 1, preferably about as 1.65: 1 is measured.

Thereby, that according to claim 4 adjoining the annular grooves Heads of Cones are conical, the assembly of the sliding elements on relieved the thighs of the posts. The ring grooves secure one perfect locking of the sliding elements on the posts.

Also the features of claim 5, wherein the pins are arranged with crosswise Slots are provided, facilitate the assembly of the sliding elements to the posts, making the pins better in the holes in the Thighs of the posts can be engaged.

With The features of claim 6 is not only a material reduction achieved, but also the introduction the thus flexible designed pin in the holes of the post legs facilitated.

Either the assembly of the sliding elements as well as the slip behavior of Claws can be further improved by the features of claim 7.

The arrangement of the slots in the slide elements and in the legs of the posts, in connection with the fact that only one hole is provided in the legs of the claws, it is possible with only a single sliding element to make optimal the slip behavior on both sides of a claw or a post.

In A compound having the features of at least one of claims 1 to 8 advantageously provide the features of claim 9, that the protective barriers have a substantially W-shaped cross-section, which of a central ground, diverging from the ground Webs, provided by end of the webs arcuate crests and adjoining the crests by themselves, in opposite directions become V-shaped the webs extending legs is formed, which is approximately in one plane end, in which also extends the bottom, with the end of the Legs are provided from the ground away approaches to the approximate connect end strips extending in the direction of the legs.

by virtue of the approaches and the end strips has such a protective barrier a higher resistance moment, in the X, Y and Z directions. The resistance to distortion of the guardrail is significantly improved, making them compatible with the usual Guard rails of the containment level H1 (new installation, repair) now also the raised one Requirements of containment level H2 with respect to a higher retention capacity is sufficient. variations exist here in the formation of the width of the approaches and / or the width of the end strips. Further, by the degree of angling the approaches to the legs or the end strips to the lugs the required holding capacity of the Guard rail can be set even more variable.

One Another significant advantage is that through the targeted Training the guardrail with the approaches and the end strips the stackability obtained as in the known barriers of the containment H1 remains. This not only facilitates space-saving storage, but also the transport from the warehouse to the assembly points at the Automobile roads.

The embodiment according to the characteristics of claim 10 provides at least in connection with the features one of the claims 1 to 8 before that the guard rails have a substantially W-shaped cross-section which is from a central floor, from the ground diverging webs, provided by the ends of the webs arcuate crests and adjoining the crests by themselves, in opposite directions V-shaped to the Webs extending legs is formed in base sections and articulated towards the bottom angled end portions are, whose longitudinal edges about to end in a plane that also touches the ground. in this connection is both the ratio of Width of the end sections to the width of the base sections as well The relationship the distance between the rounded bottom on the one hand and the knolls on the other on the other hand tangent planes to the distance of the crests in their ridge areas intersecting longitudinal planes about 1: 2.

These Features also allow the resistance moment of the crash barriers in the X, Y and Z directions with a view to a higher retention capacity Objective to improve the containment level H2.

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

1 a guard rail arrangement for a median strip between two lanes during assembly in perspective view;

2 FIG. 4 also shows, in an enlarged scale, the connection region between a post and a claw during assembly, FIG.

3 in the frontal view, a slider for disposition between a claw and a post;

4 : the sliding element of the 3 in the side view according to the arrow IV;

5 : the sliding element of the 3 in the plan view according to the arrow V;

6 : an enlarged view of an end view of a protective barrier of 1 seen in the direction of the arrow VI and

7 : likewise an enlarged view of an end view of a protective barrier according to a further embodiment.

In the 1 With 1 denotes a guard rail arrangement, as for example, on a median strip between two mutually spaced adjacent lanes of a motor vehicle road is used.

The guard rail arrangement 1 includes two mutually parallel protective barrier strands 2 from schießweise detachably juxtaposed guardrails 3 , The guardrails 3 are bolted together in an end overlap area.

The protective barrier strands 2 are frontally of spacers 4 fastened, also with the help of screw elements and end tabs. The ends 5 the thigh 6 the spacers 4 take in the from the hilltops 7 the guardrails 3 formed channels 8th , In the middle of the cross-sectionally U-shaped profiled spacers 4 are from the 1 and 2 recognizable U-shaped claws 9 attached. The attachment takes place via three mutually offset in the triangle screw elements 10 , For this purpose are in the claws 9 and in the spacers 4 three mutually offset holes 11 ,

When mounting the at the spacers 4 fixed claws 9 at the upper ends of the sigmoid profile profiled posts in cross section 12 ( 1 . 2 ) overlap the claws 9 with their webs 13 and thighs 14 as well as the flanges 15 the posts 12 which have rammed into the soil of the median strip.

From the 1 and 2 It can also be seen that the upper side of the leg 14 the claws 9 inwardly angled stop tabs 16 are provided when pushing the claws 9 on the posts 12 at the upper end sides 17 get to the plant.

The attachment of the claws 9 at the post 12 via predetermined breaking screws 18 , which two opposing holes 19 in the thighs 20 the post 12 push through ( 1 . 2 ).

Like from the 2 to 5 is recognizable, are between the thighs 14 the claws 9 and the thighs 20 the post 12 rectangular plate-shaped sliding elements 22 made of weather and UV resistant plastic. The plastic may be acrylonitrile, styrene, acrylic ester or copolymers. As in this context the 3 and 4 show corresponds to the height H of the sliding elements 22 about two and a half times its width B. at the lower end of the sliding elements 22 are cones 23 intended. The cones 23 each have a conically shaped head 24 , one to the head 24 subsequent annular groove 25 as well as a conical transition 26 between the annular groove 25 and the surface facing this 27 of the sliding element 22 on. The height H1 of the transition 26 corresponds to about half of the width B1 of the annular groove 25 , This in turn is equal to the height H2 of the head 24 sized.

The ratio of the largest diameter D of the transition 26 to the diameter D1 of the annular groove 25 is dimensioned in the embodiment about as 1.65: 1. To the cones 23 more flexible, these are with crosswise slots 28 Mistake. The slots 28 extend only through the head 24 and the ring groove 25 , In addition, let the 2 and 3 realize that the pins 23 with also the sliding elements 22 passing holes 29 are provided.

The center axis of each pin 23 on a sliding element 22 runs in the vertical center longitudinal plane VML of the sliding element 22 , In the above the pin 23 lying surface area of the sliding element 22 are two slots 30 provided, which extend parallel to each other and are arranged at the same distance from the central longitudinal plane VML. The 2 shows that in the thighs 20 of the post 12 one with the oblong holes 30 the sliding elements 22 corresponding slot 31 is provided while in the thighs 14 the claw 9 one each with one of the long holes 30 corresponding hole 21 is provided. This is just one type of sliding element 22 for both thighs 14 the claw 9 necessary.

When mounting a claw 9 at a post 12 First, the sliding elements 22 over the cones 23 and the holes 19 at the post 12 fixed. Then it is attached to a spacer 4 fixed claw 9 over the post 12 pushed so that the sliding elements 22 between the thighs 20 of the post 12 and the thighs 14 the claw 9 reach. After that, the predetermined breaking screws 18 attracted, causing the conical transitions 26 into the holes 19 the thigh 20 of the post 12 press.

The from the 6 recognizable embodiment of a protective barrier 3a has a substantially W-shaped cross-section. As in this context, in particular the 6 is the W-shaped cross-section of a flat central floor 32 , from the ground 32 from diverging webs 33 , from the ends of the webs 33 provided arcuate crests 34 and of themselves to the hilltops 34 following, in opposite directions V-shaped extending thighs 35 educated. The transitions 36 from the ground 32 on the footbridges 33 are rounded. The thigh 35 ends just before a level EE, in which also the ground 32 extends.

End of the thighs 35 are from the ground 32 away-oriented approaches 37 provided to the end strips 38 connect. The angle α between each of the facing inner sides 39 the end strips 38 and the level EE, in which the ground 32 extends, in the embodiment is 98.8 °.

The length L of the approaches 37 is about three to four times the thickness D2 of the guardrail 3a , It can also be seen that the level of EE, in the ground 32 extends and from the approaches 37 included angle β is about 15 °.

The distance A of the plane EE, in which the ground 32 extends to the plane E1-E1, which the crests 34 tangent is greater than the distance A1 to the longitudinal edges 40 the end strips 38 dimensioning plane E2-E2.

The ratio of the distance A2 on the one hand the crests 34 and on the other hand, the longitudinal edges 40 the end strips 38 tangent plane E2-E2 is at the distance A between the crests 34 tangent plane E1-E1 and the plane EE, in which the ground 32 extends, such as 1 to 0.6.

The ratio of the distance D3 between the two longitudinal edges 40 the end strips 38 to the distance A3 the crests 34 in their ridge areas 41 Intersecting longitudinal planes LE-LE and LE1-LE1 are sized approximately 1.8 to 1.

The opening angle γ between the webs 33 and thighs 35 is like the opening angle δ between the webs 33 about 70 °.

The floor 32 has a straight width B2 of 30 mm.

The embodiment of a protective barrier 3b according to 7 is similar to the one of 6 , Again, the cross section is designed substantially W-shaped. He is from a central floor 42 , from the ground 42 from diverging webs 43 , from the ends of the webs 43 provided arcuate crests 44 and of themselves to the hilltops 44 following, in opposite directions V-shaped to the webs 43 extending thighs 45 educated. The thigh 45 are in basic sections 46 and towards the ground 42 angled end sections 47 articulated, whose longitudinal edges 48 in a plane E3-E3 which also ends the ground 42 affected.

Both the ratio of the width B3 of the end sections 47 the thigh 45 to the width B4 of the base sections 46 as well as the ratio of the distance A4 between the rounded bottom 42 on the one hand and the hills 44 on the other hand tangent planes E3-E3 and E4-E4 to the distance A5 of the peaks 44 in their ridge areas 49 cutting longitudinal planes LE2-LE2 and LE3-LE3 is approximately 1: 2.

The distance D4 of the longitudinal edges 48 to each other, the distance A5 between the longitudinal planes E3-E3 and E4-E4 is approximately 1.6: 1.

The opening angle ε between the bars 43 is like the opening angle ζ between the bars 43 and thighs 45 about 70 °.

The included angle η between the insides 50 the base sections 46 and the insides 51 the end sections 47 is about 150 °.

1

Guard rail arrangement

2

Guard rail trains

3

Guardrails, 3a u. 3b guardrails

4

Spacers zw. 2

5

Ends v. 6

6

Thighs v. 4

7

Hilltop v. 3

8th

Channels in 3

9

steal

10

screw elements

11

Drilling in 4 u. 9

12

post

13

Stege v. 9

14

Thighs v. 9

15

Flanges v. 9

16

stop tabs

17

End faces v. 12

18

Break screws

19

Drilling in 20

20

Thighs v. 12

21

Drilling in 14

22

Sliding elements

23

Tang on 22

24

Head of 23

25

Ring groove in 23

26

Transition between 25 u. 27

27

Surface v. 22

28

Slits in 23

29

Drilling through 23 u. 22

30

Slotted holes in 22

31

Long hole in 20

32

Soil v. 3a

33

Stege v. 3a

34

Hilltop v. 3a

35

Thighs v. 3a

36

Transitions v. 32 on 33

37

Approaches 35

38

End strips v. 3a

39

Inside pages v. 38

40

Longitudinal edges v. 39

41

Ridge areas v. 34

42

Soil v. 3b

43

Stege v. 3b

44

Hilltop v. 3b

45

Thighs v. 3b

46

Basic sections v. 45

47

End sections v. 45

48

Longitudinal edges v. 47

49

Ridge areas v. 44

50

Inside pages v. 46

51

Inside pages v. 47

A

distance between E-E and E1-E1

A1

distance between E-E and E2 E2

A2

distance between E1-E1 and E2 E2

A3

distance between LE-LE u. LE1 LE1

A4

distance between E3-E3 and E4 E4

A5

distance between LE2-LE2 and LE3-LE3

B

Width v. 22

B1

Width v. 25

B2

Width v. 32

B3

Width v. 42

B4

Width v. 46

D

Diameter v. 26

D1

Diameter v. 25

D2

Thickness v. 3 . 3a . 3b

D3

Distance between 40

D4

Distance between 48

E-E

Level with 32

E1-E1

Level with 34

E2 E2

Level with 40

E3 E3

Level with 42

E4 E4

Level with 44

H

Height v. 22

H1

Height v. 26

H2

Height v. 24

L

Length v. 37

LE-LE

Through the longitudinal plane 41

LE1 LE1

Through the longitudinal plane 41

LE2-LE2

Through the longitudinal plane 49

LE3-LE3

Through the longitudinal plane 49

VML

vertical central longitudinal plane v. 22

α

Angle between EE u. 39

β

Angle between EE u. 37

γ

Opening angle zw. 33 u. 35

δ

Opening angle zw. 33

ε

Opening angle zw. 43

ζ

Opening angle zw. 43 u. 45

η

Opening angle zw. 46 u. 47

Claims (10)

Connecting arrangement between a front side of a protective barrier ( 3 . 3a . 3b ) of a protective barrier string ( 2 ) carrying spacer or spacer ( 4 ) and a cross-section C or sigma-shaped post ( 12 ), which between the thighs ( 14 ) one with the spacer or spacer ( 4 ) releasably connected, in cross-section C-shaped claw ( 9 ) and thighs ( 20 ) of the claw ( 9 ) and with this over predetermined breaking screws ( 18 ) coupled post ( 12 ) plate-like sliding elements ( 22 ) made of a weather- and UV-resistant plastic, which is provided with annular grooves ( 25 ) having pins ( 23 ) in holes ( 19 ) in the thighs ( 20 ) of the post ( 12 ) engage detent, characterized in that between the annular grooves ( 25 ) the pin ( 23 ) and the surfaces facing them ( 27 ) of the sliding elements ( 22 ) conical transitions ( 26 ) are provided. Connecting arrangement according to claim 1, characterized in that the height (H1) of the transitions ( 26 ) about half the width (B1) of the annular grooves ( 25 ) corresponds. Connecting arrangement according to claim 1 or 2, characterized in that the ratio of the largest diameter (D) of the transitions ( 26 ) to the diameter (D1) of the annular grooves ( 25 ) is about 1.5-1.75: 1, preferably about 1.65: 1. Connecting arrangement according to one of claims 1 to 3, characterized in that the to the annular grooves ( 25 ) subsequent heads ( 24 ) the pin ( 23 ) are conical. Connecting arrangement according to one of claims 1 to 4, characterized in that the pins ( 23 ) with crosswise arranged slots ( 28 ) are provided. Connecting arrangement according to one of claims 1 to 5, characterized in that the pins ( 23 ) with also the sliding elements ( 22 ) passing through holes ( 29 ) are provided. Connecting arrangement according to one of claims 1 to 6, characterized in that the sliding elements ( 22 ) elongated rectangular and the pins ( 23 ) at one end of the sliding elements ( 22 ) are provided. Connecting arrangement according to one of claims 1 to 7, characterized in that the sliding elements ( 22 ) in the surface areas ( 27 ) above the pins ( 23 ) with side-by-side oblong holes ( 30 ) while the claw ( 9 ) in her thighs ( 14 ) one each with one of the oblong holes ( 30 ) corresponding bore ( 21 ) and the post ( 12 ) in his thighs ( 20 ) one each with one of the oblong holes ( 30 ) matching slot ( 31 ) exhibit. Connecting arrangement according to one of claims 1 to 8, characterized in that the protective barriers ( 3a ) have a substantially W-shaped cross-section, which from a central floor ( 32 ), from the ground ( 32 ) from diverging webs ( 33 ), from the ends of the webs ( 33 ) provided arcuate crests ( 34 ) and to the hilltops ( 34 ) adjoining, in opposite directions V-shaped to the webs ( 33 ) extending legs ( 35 ), which ends approximately in a plane (EE), in which also the ground ( 32 ), wherein end of the leg ( 35 ) from the ground ( 32 ) away-oriented approaches ( 37 ) are provided, to which approximately in the direction of the legs ( 35 ) extending end strips ( 38 ) connect. Connecting arrangement according to one of claims 1 to 8, characterized in that the protective barriers ( 3b ) have a substantially W-shaped cross-section, which from a central floor ( 42 ), from the ground ( 42 ) from diverging webs ( 43 ), from the ends of the webs ( 43 ) provided arcuate crests ( 44 ) and to the hilltops ( 44 ) adjoining, in opposite directions V-shaped to the webs ( 43 ) extending legs ( 45 ) formed in basic sections ( 46 ) and towards the ground ( 42 ) angled end sections ( 47 ) whose longitudinal edges ( 48 ) end in a plane (E3-E3), which also covers the ground ( 42 ), wherein both the ratio of the width (B3) of the end sections ( 47 ) to the width (B4) of the base sections ( 46 ) as well as the ratio of the distance (A4) between the rounded bottom ( 42 ) on the one hand and the crests ( 44 On the other hand tangent planes (E3-E3 or E4-E4) to the distance (A5) of the crests ( 44 ) in their ridge areas ( 49 ) longitudinal planes (LE2-LE2 or LE3-LE3) is approximately 1: 2.