FR2660676A1 - SLIDE WITH DOUBLE SLIDING ELEMENT FOR RETAINING VEHICLES ON A ROAD. - Google Patents

Abstract

Double sliding element road safety barrier, composed of metal elements 1 assembled end to end to form a continuous surface parallel to the road. A connecting piece 4 is fixed between the two sliding elements, on the one hand, and on the other hand covers the vertical support 7 on only three sides which allows the rotation of this part 4 and its tearing from the support, that the shock comes from one side or the other of the slide.

Description

41 2660676

  SLIDE WITH DOUBLE SLIDE ELEMENT TO RETAIN THE

VEHICLES ON A ROAD

D E S C R I P TI O N

  The subject of the present invention is a safety barrier with a double sliding element for retaining vehicles, located either on the lateral part or between the two carriageways of a

  highway or a separate carriageway.

  There are currently several categories of safety devices installed along the roads; the best known and most common is made of galvanized metal profiles, installed on supports at a height of about 0.70 m; However, they require to be placed on double supports if the obstacles are too close, or to be placed in 2 rows if the traffic is on either side of their alignment in this case we can place either 2 rows runners which "turn their backs", ie fix the profiles on a horizontal spacer, this spacer being fixed in the middle on a common support These last solutions are obviously more expensive In addition, in the particular case of the areas of the central reservation of highway where traffic can be directed from one roadway to the other due to an accident or work, it is necessary to adopt a

  safety device that can be disassembled or lowered quickly-

  ment, while remaining effective the rest of the time in the event of a shock, the current systems are not entirely satisfactory on these two points. In addition, certain models are not compatible in this place with the devices placed on either side. b Jectif of the present invention is to provide an economical and effective means for retaining vehicles, compatible with existing standard profiles, devices which can -2-

  can also be easily disassembled or lowered with some-

  only accessories in the particular case of tipping points

quote above.

  The object of the invention is achieved by a device comprising two sliding elements placed parallel to the longitudinal axis.

  end of the road, the means of fixing these two elements allow

  both the use of the most commonly used profiles, (These 2 elements are essential if traffic is on either side of the device); the device also comprises a traditional support beaten into the ground; on this support is then fixed a metal part serving as a fracile connection with the two horizontal slide elements. This part remains linked to the slide elements at the time of the impact, after having detached from the support thanks to its particular shape. slides on the connecting piece can be easily dismantled, if the nuts are replaced with keys, for example and the connecting bolts of the profiles together with metal rods

  vertical passing through the four (or two) common assembly holes

  blage -'0 In a first embodiment the connecting piece will cover the support on 3 faces only in the manner of a U and its fixing will be carried out on the face of the medium so that the steel plate composing this face above and below the fixing bolt acts as a lever arm for the slide pushed at the moment of the impact, from where the impact comes, so that the hole necessary for the passage of the bolt opens under the pressure exerted , and then frees the connecting piece from the support: this is an essential characteristic of

1 invention.

  On the other hand, this connecting piece will be of rectangular section (and no longer in -U) in the attachment zone on the rails, in order to ensure a more solid connection between the two elements and the steel plates connecting this rectangular tube to the

sliding elements.

  In a second embodiment, the connecting part of square or rectangular section open in the form of C will be bolted to the connection support generally in the form of C also, so that the two flat faces opposite the faces carrying the opening of the tubes are placed one against the other; bolt

  fixing will be introduced through the opening of the connecting tube, re-

  will link the two faces placed opposite, the nut being introduced through the longitudinal opening of the support tube The openings made will be placed midway between the top of the support tube and the bottom of the connecting tube, so that these lengths of connecting tube on either side of the connecting bolt serve as a lever arm, at the time of the choe, at the top of the device: this

  lever arm leads to the forced opening of the connecting tube hole

  sound through the bolt head, the fulcrum of the lever arm being either the top of the support tube for shocks coming from one side of the device, or the bottom of the connecting tube for shocks coming from

2 on the other side.

  The safety device according to the invention has the following advantages: the shape resulting from the sliding elements linked together

  has a much greater rigidity than a regular profile

  high torsional moment, and therefore better withstands violent shocks, its symmetrical shape with respect to the support implanted in its

  vertical axis allows it to be effective for the 2 circulating zones

  culstion, on both sides of the device; moreover, the -O connection piece is designed to tear off from the support, that the shock comes

on either side of the tube.

  -'4- its method of attachment (and therefore possible disassembly) is simple and quick the connecting piece allows the use of the most common slide models currently, and therefore allows a connection without any difficulty with other devices using also

these profiles.

  its width is around half of the devices

existing metal.

  Its installed cost price is lower than the devices

tuels, c comparable efficiency.

  The following description refers to the accompanying drawings which

  represent, without any limiting character, examples of

  production of devices according to the invention.

  Figure 1 shows in perspective the first embodiment of the connecting element of the safety device, shown fixed on a post (of which only the top is shown) and carrying a slide portion on one side (the opposite slide n 'is not

  shown for reasons of clarity).

  FIG. 2 represents the section of the same device by a vertical plane

  2 cal perpendicular to the smoothing elements

  Figure B shows the device of Figure 2 seen from above.

  Figure 4 shows the second embodiment of the device.

seen in perspective.

  FIG. 5 represents section II III of FIG. 4.

  Figure 1 shows a perspective view of the connecting device (4) with the support (7) on the one hand and the sliding profiles (1)

  (only one profile has been shown in part, for the sake of clarity

  in) the profile (1) may include ribs (2) and grooves (3) the latter allowing a convenient connection with a connecting piece (4) through at least one hole (6) on each side of

the part (4).

  The part (4) receives two folded steel plates (4 bis) allowing the transmission of forces between the slide (1) and the tube (4) of the bolts (5) allow to firmly connect the slide (1) to the plate (4a) through the hole (6) and a similar hole made

in the slide (1).

  We see that the tube (4) partially covers the support (7), a

  of the four faces of the tube having been removed on the corresponding height

  laying on the covering of the support (7) by the part (4).

  Note that the tube (4) may have a closed or slightly open section in the shape of a C. The thread 2 shows the general shape of the section of the element of

  There are sliding surfaces (1).

  that also the method of fixing the elements (1) on the vertical support, by means of a connecting piece (4) which may have the shape of a square or rectangular tube and which is placed between the two sliding elements; two folded steel plates (4 bis), welded to the tube (4) allow the fixing of the profiles (1), and f transmit the forces to the part (4) The width of the plates spreads the profiles at a distance chosen according to the objective impact resistance sought A bolt (preferably cylindrical 5 allows a solid connection between the slide element

  and the connecting piece (4) (the bolt nut (5) can be replaced

  placed by a pin if you want to be able to disassemble quickly-

  ment the diposiitif), Figure 2 also allows to see the mode of connection of the part (4) on the support (7): we see that it srffç_ctue thanks to a bolt (Sbis) allowing to connect by holes the support (7) and the part (4), the latter surrounding only the support on 3 sides: in fact, the part (4) has only three faces in the part where it covers the support (7), so as to allow the part (4) to rotate relative to the support S, at the time of the impact on the slide (1); indeed, and this is a fundamental characteristic of the invention, the part of the part (4) surrounding the bolt passage hole (Sbis), hole placed in the center of this part, that is to say in the middle of the part covering height (4) on the support (7), serves as a lever arm for the sliding element (1), which allows the part (4) to be torn off from the support (7) by forced opening of the part hole (4) by the bolt head (Sbis), that the shock comes from one side or the other of the device. FIG. 3 is the top view of FIG. 2: it will be noted the particular shape of the folded sheets (4a): these will preferably be narrower in width, in their zone of attachment to the profile than in their zone of

  connection to the tube (4) if we examine a vertical section and perpen-

  right to the profiles (like figure 2 for example) and to the

  milking of greater width in their zone of attachment to the 2 profiles than in their zone of connection to the tube (4) if one examines a section of the device by a horizontal plane, as shown in Figure 3 These two arrangements lead respectively to better transmission of bending forces and better transmission

torsional forces on the support.

  FIG. 4 represents a second embodiment of the invention

  tion The tube (4) of preferably open section is placed back to back with the support (7), the length of tube (7) above the bolt (5 bis, being substantially the same as the length of the tube (4 ) -7-

  below the bolt; when a vehicle hits the slide

  safe (1), the device tends to lie down entirely; but the sliding elements (1) create an important resistant moment,

  which leads to the tube (4) retaining a certain verticali-

  tee, and will rest either on the top of the support (7) or on its own lower part depending on the origin of the shock, thus creating a significant tearing force 5 at the bolt (Sbis), which will lead to a separation of parts (4) and (7) by forced opening of the hole

  of the tube (4) by the head of the bolt (Sbis).

  Figure 5 is a section III III of Figure 4, which shows an example of connection of the two tubes (4) and (7)

-8 2660676

Claims (4)

R E V E N D I C A T I 0 N S   1) Road safety device located on the central land of roads with separate carriageways, composed of two series of horizontal metallic sliding profiles, connected to single vertical supports by means of a metal connecting piece, S characterized in that this piece is mainly composed of a vertical tube fixed to the support by a bolt located at approximately the same distance from the top of the support, on the one hand, and the part bottom of the tube on the other hand.   2) Road safety device located on the central reservation of roads with separate carriageways, composed of two series of horizontal metal sliding profiles, connected to single vertical supports by means of a metal connecting piece, conforming to the claim 1 characterized in that this connecting piece of square or rectangular section surrounds the top of the support on only three c 6 ts, the fourth cost being eliminated at a height at least equal to the height of recovery of the support by the connecting piece , a bolt securing these two pi 4 these thanks to holes drilled both on the support and on the face of the connecting piece opposite to the removed face, so that the end -20 of the support is surrounded by three faces only of the tube making up the connecting piece after joining by the bolt; :) Road safety device located on the central reservation of roads with separate carriageways, composed of two series of horizontal metallic sliding profiles, connected to plain vertical supports by means of a metal connecting piece, - Onfrme to claim 2 earactérisé in that the hole of the part of liaiscn by or s-sit the bolt ftbisb is placed S consensibly _ - 9 _ 2660676   in the center of the part of the face of the tube (4) placed opposite the removed part of the tube (4).   4) Road safety device located on the central reservation of roads with separate roads Ses, composed of two series of S horizontal metal sliding profiles, connected to single vertical supports by means of a metal connecting piece, compliant to the first claim, characterized in that folded steel plates (4 bis), welded to the tube (4) allow the profiles (1) to be fixed by moving them away from the tube (4) at a distance chosen according to the objective of impact resistance research, these steel plates offering a narrower width in their zone of attachment to the profiles than in their zone of connection to the tube (4) if we examine   a vertical section perpendicular to the profiles, and   on the contrary, a greater width at their point of attachment to the profiles than at their point of connection to the tube (4) if a horizontal section is examined, the first arrangement allowing better transmission of bending forces, the second allowing a   better transmission of torsional forces to the support.   :) Road safety device located on the central reservation of roads with separate carriageways, composed of two series of horizontal metal sliding profiles, connected to single vertical supports by means of a metal connecting piece, conforming to the first claim, and characterized in that vertical metal rods fasten the sliding profiles (1), these metal rods replacing the connecting bolts of the profiles together and passing through the same holes as these bolts, in order to allow rapid disassembly.   6 ') Road safety device located on the central reservation of separate carriageways, composed of two s Eries de Ci O horizontal metal profiles of cis emennt, connected to supports s BD Jj xn Bp SBD D Uop qu EST Jep Tio S JBTU Jpp a D uo Tlex Tj Dp uolnoq np a SE Esed ap noil al queu Bluoo qjoddns np o Dej el aquo D a Bp Deld qsa O np B Ieu Tlpnqi Tuol a Jnqa U 7 Anol F amp Odd O -EB Tnb 2 ap a WJOJ ua- (h) aqnq np a Dej El 5 Bnb a J Tp -? - qs BD 'uo Tl EXTJ ap noal Bl qua Tquo D Tnb lioddns np B Zla T a Tlqe Ld el aquo (D sop p Sop p De Td qsa T Tlnb q 'D 3 p majoj u B q U a (h) aqnq al anb BD ua PE Tl Pq Dl Eeo D uo Tle DT Ppu BAI ajîlw Bjd el e Bawojuo D anbtiejpw uo WY Te TI Bp ao DQ-d aunp u B Xow Bl Jed Xn Eo T 14 q A sanb T Un 9 Z 9099 g