EP1196660A1 - Road safety device, component parts and method for making same - Google Patents

Road safety device, component parts and method for making same

Info

Publication number
EP1196660A1
EP1196660A1 EP00948077A EP00948077A EP1196660A1 EP 1196660 A1 EP1196660 A1 EP 1196660A1 EP 00948077 A EP00948077 A EP 00948077A EP 00948077 A EP00948077 A EP 00948077A EP 1196660 A1 EP1196660 A1 EP 1196660A1
Authority
EP
European Patent Office
Prior art keywords
post
piece
integrated
heald
barrier
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP00948077A
Other languages
German (de)
French (fr)
Inventor
Jean-Marie Pestre
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Diffusion Regionale et Locale Ste
Original Assignee
Diffusion Regionale et Locale Ste
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Diffusion Regionale et Locale Ste filed Critical Diffusion Regionale et Locale Ste
Publication of EP1196660A1 publication Critical patent/EP1196660A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
    • E01F15/00—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact
    • E01F15/02—Continuous barriers extending along roads or between traffic lanes
    • E01F15/04—Continuous barriers extending along roads or between traffic lanes essentially made of longitudinal beams or rigid strips supported above ground at spaced points
    • E01F15/0453—Rails of materials other than metal or concrete, e.g. wood, plastics; Rails of different materials, e.g. rubber-faced metal profiles, concrete-filled steel tubes
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
    • E01F15/00—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact
    • E01F15/02—Continuous barriers extending along roads or between traffic lanes
    • E01F15/04—Continuous barriers extending along roads or between traffic lanes essentially made of longitudinal beams or rigid strips supported above ground at spaced points
    • E01F15/0407—Metal rails
    • E01F15/0423—Details of rails
    • E01F15/043—Details of rails with multiple superimposed members; Rails provided with skirts

Definitions

  • the present invention relates to a road safety device, in particular for motorcyclists.
  • the technical field of the invention is that of manufacturing road safety barriers, which are installed along roads to prevent motor vehicles from leaving their lane.
  • ⁇ a sheath sliding on the post, the lower end of which rests at the base of the post and the upper end of which has a shape adapted to that of a horizontal rail for engaging therewith, ⁇ said horizontal rail comprising a metal tube and a plastic tube covering the metal tube; these tubes are pierced with an opening (or two openings aligned transversely) so that the rail can be engaged on the post until it rests on the sheath, an expansion screw from the upper end of the post to lock the horizontal rail in position.
  • Patent EP 82351 1 describes, in relation to FIGS. 7 and 8, a road safety device capable of being mounted on the posts, which is constituted by: longitudinal bodies (smooth) of rectangular upper section and of trapezoidal lower section i base, which are hollow and provided with two longitudinal reservations, stiffening tubes intended to penetrate half into a reservation of a first longitudinal body and half into a second longitudinal body adjacent to the first body, of length equal to two thirds that of a longitudinal body, each tube resting on a post when the barrier is mounted, connecting half-shells provided to extend two longitudinal bodies, to fit between them, which are provided with horizontal notches receiving a stiffening tube, and which are provided with a cutout corresponding to the half cross-section of the post reduced by a few mill imeters, members for clamping the two half-shells against each post, by screwing, which immobilize the half-shells on the post.
  • This barrier device has certain drawbacks which result in particular from the use of screws or bolts for assembling the connecting piece to the posts and for assembling the different pieces together; such assembly and clamping members are indeed long to set up; they can also represent a danger for motorists or motorcyclists when they are lost on the road; they also represent a particular danger for motorcycles when they are in place for fixing the barrier, even if they are mounted flush (not protruding).
  • the object of the present invention is therefore to propose and propose an improved road safety barrier which at least partly remedies these drawbacks.
  • the invention consists in proposing such a barrier comprising connecting elements and comprising connecting pieces (fixing) - also called supporting pieces - allowing the attachment of the facing pieces to s poles (which are fixed to the ground, for example dark in the ground), in which each fixing part comprises an integrated means of interlocking sound, with a second fixing part or else with a di blocking, to ensure its solidari sation to a post by pinching thereof, so that one avoids the use of clamping members such as screws or bolts separate (or separable) from the connecting device.
  • Each fastener further comprises at least one, in particular at least two and at most six integrated sleeve (s), each sleeve being intended to receive the end of a section of tubular connection, by fitting the section of smooth on the sleeve.
  • a barrier according to the invention comprises at least one hollow tubular lily, es essentially made of plastic material, which is fixed to each post by at least two pieces fitted together and enclosing the post on a substantial part of its height, at least one piece among said at least two pieces forming a console supporting at least one lily fitted around a sleeve integrated into said at least one part, called fixing or support part.
  • said at least two pieces form a kind of collar (or ring) for strapping the post; for this purpose these parts are generally supported on two opposite external lateral faces of the post; each of these parts therefore comprises at least one substantially planar wall intended to bear against one of said lateral faces of the post.
  • the appearance of said at least two pieces is obtained by mutual engagement of connecting means respectively integrated into each of these pieces, by sliding (relative) of the connecting means in a direction parallel to the longitudinal axis of the post, up to a position of mutual engagement of the fastening parts in which said parts enclose the post.
  • each part preferably comprises two parallel slide elements, which are respectively arranged on either side of said support wall of the part.
  • the invention is thus partly based on the surprising observation that it is possible to make a rigid and reliable connection between a part, known as a fixing part and forming a heddle support, and a post, using at least one part. additional, called blocking, simply fitted into said fixing part and forming a collar therewith, without the need to use screws or bolts to secure it.
  • the support piece, as well as said blocking piece is constituted by an essentially hollow body, of plastic material, obtained by rotational molding, the part of which (called rear) comprises: a portion (in general form of groove) central, which forms a housing capable of receiving a part - called front - of a post, and whose cross section is adapted accordingly to the cross section of the post, and which comprises said bearing wall, and two lateral connecting portions, which extend along the central portion, on either side thereof, substantially over the entire height of the support piece, which each have at least one groove longitudinal (which is vertical in position of connection with a vertical post) able to receive a rib of complementary shape which is provided on a complementary piece of the support piece, called blocking piece - or key; said support and blocking parts being able to surround the post and able to fit into one another, by sliding in a movement parallel to it, by their connecting portions forming a kind of slide.
  • This technique also makes it possible to add the thickness of the walls to a determined value and allows the parts of said parts which form the integrated connecting means to be hollow themselves; this consequently results in a determined capacity of these integrated connecting means to deform elastically, which gives these parts of a part a spring function ensuring the blocking (in the mounting position) of the fastening parts between them as well as the blocking of these parts against the external faces of the post, due to the support forces resulting from this elasticity; this elasticity also allows the mutual engagement of these parts whose geometry is precisely adapted to that of the post.
  • each lateral portion comprises a longitudinal half-tenon and a half-mortai; in particular, the corresponding tenon and mortise are in the shape of a swallow's tail (dovetail); for this purpose, the cross section of each of the lateral portions of its connection comprises a profile in the general form of "S" or "Z".
  • the integrated connecting portions can be symmetrical - and of identical profile - by forming, for one, a male connecting member (half a stud) and for the other a female connecting member (half a mortise); thus, two identical support pieces arranged s head-to-tail on either side of a post can be arranged together (by surrounding the post) by these integrated connecting members, each j ouantant - for the other support piece - the role of the locking piece described above; alternately, said integrated portions of links are symmetrical with respect to said vertical median plane.
  • each lateral portion of its integrated link has a longitudinal rib of transverse profile in the shape of a "U" (that is to say generally square or rectangular), which extends along a heel longitudinal improving the resistance to tearing of the link.
  • the invention consists in proposing a piece for fixing posts to the posts, which comprises, in the so-called front part, at least two (in particular two or three) tubular sections which are integrated into the room and form two superimposed hubs (or sleeves or end pieces) capable of receiving by fitting two (respectively three) parallel elements (sections) (superimposed) of hollow tubular lilies.
  • the barrier comprises two or three superposed tubular lilies which are fixed to each post by a connecting piece common to the two or three healds; consequently, during an impact against the barrier, the beams of the barrier being generally urged to an uneven extent, the li s subjected to the greatest part of the forces due to the impact transmits these forces to the post by through the whole of the bearing face of the connecting piece common to the beams, which increases the impact resistance of the barrier; for the same reasons, the resistance to disengagement of the connection between the heddles and the post is increased due to the increased surface area of the portions of the connection parts which ensure their mutual interlocking.
  • each support piece has four (or six) integrated end pieces aligned two by two, parallel to each other two by two (horizontal in the mounting position), which are of circular section and whose free end is chamfered, which extend symmetrically on either side of a median plane (vertical in mounting position), and whose ratio of length to diameter is in a range from 1.5 to 5, in particular from 2 to 3.
  • This design can also easily be adapted to the manufacture of barrier end support parts, by a simple and inexpensive arrangement of a mold of these parts, to obtain an asymmetrical part (left or right) equipped only with two (or three) overlapping tips instead of four (or six).
  • the connecting part of the end pieces with the central part of the support piece can be provided with a central groove (and perpendicular to the axes of the end pieces) forming a zone of least resistance to torsional forces along a vertical axis. , in particular by forming a kind of bellows, to favor the controlled deformation of the support part in allowing a small amplitude rotation of the end pieces along the axis of said groove, in order to form a pivoting connection of predetermined stiffness.
  • the walls of the central part (of the support piece) which connects the arm fitting ends to the integrated members for connecting to a post can also be corrugated and / or form at least one groove (and / or a rib), which may extend along a plane (vertical in the mounting position) transverse parallel to the end pieces, to form a zone of least resistance to horizontal compression forces, in particular by forming a kind of bellows integrated into the support piece, which allows its controlled deformation in the event of an impact and allows it to continue to fully fulfill its connecting functions, and also makes it possible to dissipate part of the energy of the impact.
  • the invention consists of a method of manufacturing tubular security barrier beams by plastic extrusion, in which one causes the simultaneous extrusion (coextrusion), through a die, of two plastic materials of different property and / or type: a first material to form the internal part of the wall of the tubular heald, and a second material to form the external part of said heald wall.
  • This technique makes it possible to choose said first (internal) material and to adjust the thickness of said internal wall part so as to optimize in particular one or more of the following parameters:
  • This technique also makes it possible to choose said second (external) material and to adjust the thickness of said external wall part, so as to optimize in particular one or more of the following parameters:
  • ⁇ choose a coefficient of friction (and / or roughness) of the external face of the lily on a suit and / or a motorcycle helmet which is minimized to reduce the severity of the consequences of an impact, ⁇ optimize resistance to weathering and solar radiation
  • ⁇ choose a shade of color and / or patterns suited to the environment of the barrier, ⁇ increase the mechanical resistance of the barrier.
  • This technique also makes it possible to reduce the cost of the stringer thanks to the functional specialization of the internal and external layers of the wall.
  • said first material is recycled high density polyethylene, while the second material is non recycled high density polyethylene; preferably the thickness of the inner wall layer (or part) is greater than that of the outer wall layer (or part).
  • Figure 1 illustrates in perspective view, according to a first embodiment of the invention, a fastening piece to a post of two tubular rails and the corresponding locking piece, in the mounting position on a post partially shown.
  • Figure 2 illustrates in perspective, a fastener, a post and a locking piece, in an unassembled position ("exploded"), these parts being viewed from above and cut along a horizontal plane passing through the longitudinal axis d '' a tubular boom fitting.
  • Figure 3 illustrates in front view a fastener according to the invention
  • Figure 5 illustrates the part of Figure 3, in sectional view along a vertical median plane, and is a view along VV of Figure 3.
  • Figure 4 illustrates in top view two fasteners mounted head to tail from side and on the other side of a post, for the realization of a double safety barrier.
  • FIGS. 3 to 5 illustrate an alternative embodiment of the asymmetrical dovetail connection with respect to that of FIGS. 1 and 2.
  • Figure 6 illustrates similarly to Figure 1, another embodiment of the fastener and a blocking part as associated; this embodiment differs by the presence of an articulation of the end pieces by a vertical vertical bellows on the front face, and by the geometry of the integrated components of its connection.
  • FIG. 7 illustrates in transverse view the use of the invention for the production of a safety barrier for motorcycles fixed to the support posts of a metal slide under which it extends.
  • FIG. 8 illustrates a view from above of a device for fixing lilies to a post, for one (terminal) end of a barrier.
  • Figures 9 and 1 0 illu strent, re spectively in profile view and in view of above, an alternative embodiment of the invention, in which the rails s integrated s to the connecting piece are symmetrical s relative to a vertical median plane; in this two figures, two identical connecting pieces are used to form a double barrier; these two connecting pieces are joined s do s back and joined s by interlocking using two additional identical locking pieces each provided with two slides and of shape adapted to the cross section in "I" of the post; Figure 1 1 illustrates in perspective one of these additional locking parts.
  • Figures 12 to 1 7 illustrate in view of s su s ("exploded") six other s configurations of locking pieces, which are adapted for different shapes (U, C, S, I, O) and orientation of the post; these five systems use the same smooth connection piece / post fitted with sleeves; the connection systems of FIGS. 14 to 1 7 use two additional locking keys functionally identical to those of FIGS. 1 0 and 1 1 but which differ in their dimensions and in the shape of their support wall on the post which is adapted to the shape of it.
  • Figure 1 8 illustrates an “exploded” perspective view of a connecting piece comprising two end pieces aligned to support two successive sections of a single stringer, as well as a locking piece equipped with two lateral slides of a shape complementary to that of the lateral slides of the heald support piece; these parts are of shape adapted to that of a post whose cross section matches a C-shaped profile.
  • the heald fixing device illustrated in fig 1, 2, 6 to 8, 12, 13, 18, comprises a support piece 1 pressed against the front face 50 of the post 6 and a locking key 2 arranged in the rear part of that -this ; these two parts encircle the retaining post 6 (of vertical axis 22 and of section in the shape of "C") of the safety barrier, once their mutual interlocking produced; two superimposed tubular rails 3 are slidably fitted onto the arms 4 (or tubular ends) of the starting box 5 forming the front part of the part 1.
  • These connecting pieces 1, 2 can be made of polyethylene, possibly mixed with other materials such as packaging waste.
  • the invention can be used for road safety (roads, motorways) and can also be applied for the safety of go-kart tracks or motorcycle races.
  • Figures 2 and 18 in particular show (in section) the means for fixing the support piece 1 with the key 2 and the post 6;
  • the support piece 1 has on its rear (post side 6) a support wall 8 which contributes to delimiting a housing 51 or cavity in the form of a vertical groove capable of encompassing, over its width, the support post 6; this wall 8 is extended laterally by a female half dovetail 9 (fig 2), into which is inserted the male half dovetail 10 of the key 2; on the opposite side is provided a male half dovetail 1 1 of the support piece 1, which is capable of being inserted in the female half dovetail 12 of the key 2, thus allowing imprisonment post 6.
  • the dovetail is opposite to a conventional dovetail; in other words, the two left and right half dovetails integrated on the rear face of the support piece 1 - like those integrated on the front face of the locking key - are not symmetrical with respect to the median plane 20 ( Figure 3) vertical, but on the contrary are identical so as to form for one, a male member and for the other a female connecting member; thanks to this structure, the support piece 1 can fit into another support piece 1 arranged on the opposite (rear) side of the post, to form a double safety barrier arranged centrally with respect to the road ( see Figure 4), without requiring an additional connecting piece, unlike the embodiments illustrated in Figures 10 and 14 to 17.
  • the internal angles of the dovetails are provided with protruding heels 13 capable of achieving optimum blocking.
  • the internal face of the key 2 has, in line with the center of the post 6, two protuberant longitudinal tongues 14 able to be inserted into the vertical opening 15 of the post 6 (of cross section at "C"), so as to allow the recovery of lateral forces, thus preventing rotation of the key.
  • the junction of the rear part of the support piece 1 with its front part 5 of connection with the tubular end pieces 4, is achieved by a body 16 of generally frustoconical shape and elongated vertically.
  • This body 16 (fig 2, 4, 8) is provided on its periphery with a peripheral wave (bellows) 18 capable of deformation in compression in order to take up part of the energy caused by the direct impact on the part (box ) 5 by the motorcyclist, shock may be perpendicular or parallel to the support piece.
  • a peripheral wave (bellows) 18 capable of deformation in compression in order to take up part of the energy caused by the direct impact on the part (box ) 5 by the motorcyclist, shock may be perpendicular or parallel to the support piece.
  • Figures 3, 5 and 7 show the presence of a spoiler (or heel) protruding 19 in the lower part of the support piece 1 and the locking key 2, coming to rest on the ground to ensure reliable and repetitive positioning in height.
  • FIGS. 1 and 3 to 6 show that the front part (tube box) 5 of the part 1 comprises four starts of tube portions called arms or end pieces or sleeves 4, integrated into the support part 1, these arms being arranged vertically superimposed two by two, on either side of the median vertical plane 20 of the support 1, parallel to each other and to the road; in the particular case illustrated in fig 18, the part 1 comprises only two sleeves 4 aligned along the axis 21 and capable of each supporting a section of heddle 3, to produce a barrier with a single heald; in a variant not shown, the connecting piece may include 6 superimposed sleeves and aligned 2 to 2 to produce a barrier comprising 3 reads its superimposed.
  • These arms 4 receive by interlocking the tubular rails of circular section 3 in order to fill the void under the existing safety barrier to prevent the embedding of the motorcyclist; they have the effect, by the inherent flexibility of the tubular rails 3 and by the flexibility of the arms 4, of absorbing the energy of the impact, without causing a spring effect; energy is therefore transmitted to all of the elements constituting the barrier.
  • the support piece 1 is fixed by its rear, under the metal slide (23 FIG. 7) to the right of the front faces (road side) of the fixing posts of the slide of security ; maintaining the support piece 1 vis-à-vis the post 6 is obtained by means of a locking key 2 (rotomolded plastic) coming to fit vertically from the top rear of the piece support; parts 1, 2 have for this fixing a double slide connection preferably extending over the entire height of the two parts, the dovetail of the key 2 having the particularity of coming directly into contact between the post and the part support thus ensuring effective clamping of the assembly, support piece, post and key, and facilitate assembly, without special tools, or other fixing means such as screws or bolts.
  • a locking key 2 rotomolded plastic
  • the front part 5 of the support piece 1 forms a profiled box on two parallel faces from which protrude four lateral arms 4 of tubular shape, closed by a wall 52 (integrated into the body 16) at their free end, and provided with 'a chamfer 53; these arms forming supports for tubular beams, located to the right and to the left of the support piece, can each extend over a length representing approximately one fifth of the distance between two posts.
  • the balance of the distance to be filled between two posts, to remove the embedding of the motorcyclist is achieved by the interlocking of the tubular beams reported on the departures of the four arms of the support piece, by overlap.
  • This assembly makes it possible to obtain a simple assembly and to respond to all the variations in spacing between posts: it suffices for this to cut a section of heddle of length adapted to the spacing between two successive posts.
  • the structure of the molded (and generally closed) hollow body of the part 1 allows bending of the sleeves 4 supporting the tubular beams with respect to the tube box; the deformations obtained, by the flexibility of the material, and by the design of the hollow support piece allow part of the energy of an impact to be absorbed; in the case of a very violent impact, lateral deformation of the support piece can be facilitated by the central wave (bellows) 54 illustrated in FIG. 6 and extending symmetrically relative to the median plane 20.
  • the support piece makes it possible to transmit the forces to the metal poles, to ensure the positioning of the tubular beams, to stiffen them, to ensure the continuity of the beams in line with the poles, and to make contribute sections of boom not exposed to shock to the resistance of the barrier, by transmitting part of the forces to them.
  • the transmission of forces to the post is achieved in particular by a controlled crushing of the support piece, this in order to limit the forces.
  • the integrated nozzles 4 reinforce the ends of the boom subjected to bending.
  • the sleeve 4 integrated in particular for the role of gradually stiffening the beam in the vicinity of the support piece.
  • the fixing systems illustrated FIGS. 10 and 14 to 17 further comprise at least one pair of side pieces 60, 61, 62 of so-called additional blocking devices, of substantially identical function and of structure similar to that illustrated in FIG. 11.
  • the latter 61 is in the form of a base 64 in the form of a thick rectangular flat plate on a main face 65 before which three ribs 66 to 68 project parallel to the axis 69, thus delimiting two by two, two grooves parallels 70, 71; the variant embodiments 60, 62 illustrated in fig 10, 16, 17 have only two parallel ribs delimiting a single groove.
  • These side pieces 60 to 62 are made of plastic, by extrusion, by rotational molding or by injection, and preferably have a height 72 - measured along the axis 69 of the ribs 66 - 68 - which is equal to or little different from a under multiple of the height of the heald support piece and / or the height of the rear locking piece 2; this allows easy assembly of the fastening system when the vertical downward sliding of the rear part 2 relative to the part 1 is made delicate or impossible, for example due to a free space under an existing heald (such as 23 fig 7 ) whose height is less than the sum of the height of parts 1 and 2.
  • the assembly is then carried out as follows: the parts 1 and 2 are brought closer to each other until they come into contact with each other by their respective rear wall (substantially flat) 80, 81 , from a position away from the post as illustrated in fig 12 to 17 in particular, j usqu'à the contact position such as that illustrated in fig 10; an additional left lateral locking part is introduced into the remaining free space between the left lateral external face of the post and the two slides (as marked 100, 1 01 fig 14) equipping parts 1 and 2 respectively, by sliding downwards along the post; the same operation is carried out on the right side with a second side piece identical to the first; if the height of these pieces is equal to the half-height of pieces 1, 2, this operation is repeated (once) on the left and on the right, so that one obtains, along each lateral face of the post a stacking (at least two) of said additional lateral locking pieces; this stack, which is intimately fitted into the runners of the main parts 1, 2 and which is supported - thanks to the shape of the rear
  • the beams can be obtained by simultaneous extrusion of recycled HDPE forming the internal part of a tube of circular section, the thickness of which is close to 2 to 6 millimeters, and non-recycled HDPE tinted in the mass forming the external part of the tube , whose thickness is close to 1 to 4 millimeters; this can make it possible to obtain an internal face (90 FIG. 1 8) whose roughness is greater than that of the external face (91 FIG. 1 8) of the heddle.

Abstract

The invention concerns a road safety device, in particular for motorcyclists. The technical field of the invention is that of the manufacture of road crash barriers which are installed on roadsides to prevent motor vehicles from leaving their traffic lane. The invention is characterised in that a part (1) fixing or locking a hollow tubular rail (3) to a post (6) of a safety barrier, comprises an incorporated interlocking means to make it integral with the post (6).

Description

Dispositif de sécurité routière, pièces constitutives et leur procédé de fabrication Road safety device, constituent parts and their manufacturing process
La présente invention est relative à un dispositif de sécurité routière, en particulier pour motocyclistes.The present invention relates to a road safety device, in particular for motorcyclists.
Le domaine technique de l'invention est celui de la fabrication de glissières de sécurité routière, que l'on installe le long des routes pour empêcher les véhicules automobiles de quitter leur voie de circulation.The technical field of the invention is that of manufacturing road safety barriers, which are installed along roads to prevent motor vehicles from leaving their lane.
Il est connu d'installer le long de routes des glissières - ou barrières - de sécurité constituées par une pluralité d'éléments longitudinaux disposés de façon contiguë dans l'alignement les uns des autres, chaque élément longitudinal étant mis en place sur deux poteaux adjacents par déplacement suivant une direction perpendiculaire aux poteaux ; tel est notamment le cas des glissières constituées de profilés métalliques comportant des ondulations longitudinales et assujettis aux poteaux par des pièces dites "écarteurs" qui les maintiennent à 50 centimètres environ au-dessus du sol ; tel est également le cas des barrières en matière plastique décrites dans la demande de brevet EP 823 51 1.It is known to install along roadways - or barriers - safety constituted by a plurality of longitudinal elements arranged contiguously in alignment with each other, each longitudinal element being placed on two adjacent posts by displacement in a direction perpendicular to the posts; this is particularly the case of slides made of metal profiles having longitudinal corrugations and subject to the posts by pieces called "spacers" which keep them at about 50 centimeters above the ground; this is also the case for the plastic barriers described in patent application EP 823 51 1.
Il est également connu d'engager les éléments longitudinaux, dits lisses ou tronçons de lisse, avec les poteaux par déplacement de la lisse parallèlement au poteau, en particulier par coulissement de la lisse autour d'un poteau, comme décrit dans le brevet US 5 261 647 ; Ce brevet décrit un système pour la construction d'une barrière de sécurité routière fixée au sol par des poteaux métalliques tubulaires, qui comporte, pour chaque poteau :It is also known to engage the longitudinal elements, called healds or heald sections, with the posts by displacement of the heald parallel to the post, in particular by sliding the heald around a post, as described in US Patent 5 261,647; This patent describes a system for the construction of a road safety barrier fixed to the ground by tubular metal posts, which comprises, for each post:
^ un fourreau coulissant sur le poteau, dont l'extrémité inférieure repose à la base du poteau et dont l'extrémité supérieure a une forme adaptée à celle d'un rail horizontal pour venir en prise avec celui-ci, ^ ledit rail horizontal comportant un tube métallique et un tube en plastique recouvrant le tube métallique ; ces tubes sont percés d'une ouverture (ou de deux ouvertures alignées transversalement) de sorte que le rail peut être engagé sur le poteau jusqu'à reposer sur le fourreau, une vis d'expansion de l'extrémité supérieure du poteau pour bloquer le rail horizontal en position. Les différentes barrières décrites dans le brevet EP 82351 1 sont destinées à être montées sur des poteaux de glissières (métalliques ou en bois) existantes, sans démontage de ces dernières, sous celles-ci, de manière à constituer pour les motards qui glissent après une chute, une barrière qui les protège des poteaux et les empêche de s'encastrer sous la glissière existante.^ a sheath sliding on the post, the lower end of which rests at the base of the post and the upper end of which has a shape adapted to that of a horizontal rail for engaging therewith, ^ said horizontal rail comprising a metal tube and a plastic tube covering the metal tube; these tubes are pierced with an opening (or two openings aligned transversely) so that the rail can be engaged on the post until it rests on the sheath, an expansion screw from the upper end of the post to lock the horizontal rail in position. The various barriers described in patent EP 82351 1 are intended to be mounted on existing slide posts (metallic or wooden), without dismantling the latter, under these, so as to constitute for bikers who slide after a fall, a barrier which protects them from the posts and prevents them from fitting under the existing slide.
Le brevet EP 82351 1 décrit, en relation avec les figure s 7 et 8, un dispositif de sécurité routière apte à être monté sur les poteaux, qui est constitué par : des corps longitudinaux (lisses) de section supérieure rectangulaire et de section inférieure trapézoïdale i socèle, qui sont creux et munis de deux réservations longitudinales, des tubes de rigidification destinés à pénétrer pour moitié dans une réservation d'un premier corps longitudinal et pour moitié dans un deuxième corps longitudinal voisin du premier corps, de longueur égale aux deux tiers de celle d'un corps longitudinal, chaque tube prenant appui sur un poteau lorsque la barrière est montée, des demi-coquilles de liaison prévues pour prolonger deux corps longitudinaux, pour s'encastrer entre ceux-ci, qui sont munies d'échancrures horizontales recevant un tube de rigidification, et qui sont munies d'une découpe correspondant à la demi-section transversale du poteau diminuée de quelques millimètres, des organes de serrage des deux demi-coquilles contre chaque poteau, par vissage, qui immobilisent les demi-coquilles sur le poteau.Patent EP 82351 1 describes, in relation to FIGS. 7 and 8, a road safety device capable of being mounted on the posts, which is constituted by: longitudinal bodies (smooth) of rectangular upper section and of trapezoidal lower section i base, which are hollow and provided with two longitudinal reservations, stiffening tubes intended to penetrate half into a reservation of a first longitudinal body and half into a second longitudinal body adjacent to the first body, of length equal to two thirds that of a longitudinal body, each tube resting on a post when the barrier is mounted, connecting half-shells provided to extend two longitudinal bodies, to fit between them, which are provided with horizontal notches receiving a stiffening tube, and which are provided with a cutout corresponding to the half cross-section of the post reduced by a few mill imeters, members for clamping the two half-shells against each post, by screwing, which immobilize the half-shells on the post.
Dans la position serrée, les demi-coquilles s'appuient sur les poteaux et sur les tubes pour les immobiliser verticalement par rapport aux poteaux et horizontalement par rapport aux corps longitudinaux. Ce dispositif de barrière présente certains inconvénients qui résultent notamment de l'utilisation de vis ou boulons pour l'assemblage de la pièce de liaison aux poteaux et pour l'assemblage des différentes pièces entre elles ; de tels organes d'assemblage et de serrage sont en effet longs à mettre en place ; ils peuvent en outre représenter un danger pour les automobilistes ou motocycliste s lorsqu'ils sont égarés sur la chaus sée ; ils repré sentent en outre un danger particulier pour les motocycli s tes lorsqu'il s sont en place pour la fixation de la barrière, même s'ils sont montés affleurants (non saillants) . Par ailleurs, ils nécessitent d'être serré s selon un couple de serrage difficile à contrôler si l'on veut as surer une résistance (ou raideur) déterminée à la liai s on entre la pièce dite de liaison et le poteau d'une part, et à la liai son entre les tubes de rigidification et la pièce de liai son (et/ ou le poteau) d'autre part ; en outre, afi n que toutes ce s liaisons aient une raideur identique, il faut toutes le s contrôler indépendamment le s unes des autres, ce qui entraîne une perte de temps .In the clamped position, the half-shells are supported on the posts and on the tubes to immobilize them vertically with respect to the posts and horizontally with respect to the longitudinal bodies. This barrier device has certain drawbacks which result in particular from the use of screws or bolts for assembling the connecting piece to the posts and for assembling the different pieces together; such assembly and clamping members are indeed long to set up; they can also represent a danger for motorists or motorcyclists when they are lost on the road; they also represent a particular danger for motorcycles when they are in place for fixing the barrier, even if they are mounted flush (not protruding). Furthermore, they need to be tightened according to a tightening torque that is difficult to control if one wishes to have a determined resistance (or stiffness) to the connection between the so-called connecting piece and the post on the one hand. , and to the link between its stiffening tubes and the link piece (and / or the post) on the other hand; in addition, so that all these s connections have an identical stiffness, they must all be controlled independently of each other, which leads to a loss of time.
La présente invention a donc pour obj et de propo ser une barrière de sécurité routière améliorée et qui remédie, en partie au moins, à ces inconvénients. Selon un premier aspect, l'invention consiste à proposer une telle barrière comportant de s éléments de li s se et comportant des pièces de liaison (fixation) - dite s également pièce s d'appui - permettant l'accrochage des pièces de lis se à de s poteaux (qui sont fixés au sol, par exemple en foncés dans le sol) , dans laquelle chaque pièce de fixation comporte un moyen intégré de liai son à emboîtement, avec une deuxième pièce de fixation ou bien avec une pièce di te de blocage, pour as surer sa solidari sation à un poteau par pincement de celui-ci, de sorte que l'on évite l'usage d'organes de serrage tels que vis ou boulons séparés (ou séparables) du dispositif de liaison. Chaque pièce de fixation comporte en outre au moins un, en particulier au moins deux et au plus six manchon (s) intégré s, chaque manchon étant destiné à recevoir l'extrémité d'un tronçon de li sse tubulaire, par emmanchement du tronçon de lisse sur le manchon.The object of the present invention is therefore to propose and propose an improved road safety barrier which at least partly remedies these drawbacks. According to a first aspect, the invention consists in proposing such a barrier comprising connecting elements and comprising connecting pieces (fixing) - also called supporting pieces - allowing the attachment of the facing pieces to s poles (which are fixed to the ground, for example dark in the ground), in which each fixing part comprises an integrated means of interlocking sound, with a second fixing part or else with a di blocking, to ensure its solidari sation to a post by pinching thereof, so that one avoids the use of clamping members such as screws or bolts separate (or separable) from the connecting device. Each fastener further comprises at least one, in particular at least two and at most six integrated sleeve (s), each sleeve being intended to receive the end of a section of tubular connection, by fitting the section of smooth on the sleeve.
En d'autres termes, une barrière selon l'invention comporte au moins une lis se tubulaire creuse, es sentiellement constituée de matière plastique, qui est fixée à chaque poteau par au moins deux pièces emboîtées l'une avec l'autre et enserrant le poteau sur une partie sub stantielle de sa hauteur, au moins une pièce parmi lesdite s au moins deux pièce s formant une console supportant au moins une lis se emmanchée autour d'un manchon intégré à ladite au moins une pièce, dite pièce de fixation ou d'appui.In other words, a barrier according to the invention comprises at least one hollow tubular lily, es essentially made of plastic material, which is fixed to each post by at least two pieces fitted together and enclosing the post on a substantial part of its height, at least one piece among said at least two pieces forming a console supporting at least one lily fitted around a sleeve integrated into said at least one part, called fixing or support part.
Ainsi, lesdites au moins deux pièces forment un genre de collier (ou bague) de cerclage du poteau ; à cet effet ces pièces sont généralement en appui sur deux faces latérales externes opposées du poteau ; chacune de ces pièces comporte donc au moins une paroi sensiblement plane destinée à venir en appui contre une desdites faces latérales du poteau.Thus, said at least two pieces form a kind of collar (or ring) for strapping the post; for this purpose these parts are generally supported on two opposite external lateral faces of the post; each of these parts therefore comprises at least one substantially planar wall intended to bear against one of said lateral faces of the post.
L'as semblage desdites au moins deux pièces est obtenu par engagement mutuel de moyens de liaison respectivement intégrés à chacune de ces pièces, par coulissement (relatif) des moyens de liaison selon une direction parallèle à l'axe longitudinal du poteau, jusqu'à une position d'emboîtement mutuel des pièces de fixation dans laquelle lesdites pièces enserrent le poteau.The appearance of said at least two pieces is obtained by mutual engagement of connecting means respectively integrated into each of these pieces, by sliding (relative) of the connecting means in a direction parallel to the longitudinal axis of the post, up to a position of mutual engagement of the fastening parts in which said parts enclose the post.
Afin d'assurer la solidarisation desdits au moins deux pièces par coulissement pour former ledit collier, chaque pièce comporte de préférence deux éléments parallèles de glissière, qui sont respectivement disposés de part et d'autre de ladite paroi d'appui de la pièce.In order to secure said at least two parts by sliding to form said collar, each part preferably comprises two parallel slide elements, which are respectively arranged on either side of said support wall of the part.
L'invention repose ainsi en partie sur la constatation surprenante selon laquelle il est possible de réaliser une liaison rigide et fiable entre une pièce, dite de fixation et formant support de lisse, et un poteau, à l'aide d'au moins une pièce supplémentaire, dite de blocage, simplement emboîtée dans ladite pièce de fixation et formant avec celle-ci un collier, sans qu'il soit besoin d'utiliser des vis ou boulons pour assurer la fixation.The invention is thus partly based on the surprising observation that it is possible to make a rigid and reliable connection between a part, known as a fixing part and forming a heddle support, and a post, using at least one part. additional, called blocking, simply fitted into said fixing part and forming a collar therewith, without the need to use screws or bolts to secure it.
Selon un mode préféré de réalisation, la pièce d'appui, de même que ladite pièce de blocage, est constituée par un corps essentiellement creux, en matière plastique, obtenu par rotomoulage, dont la partie (dite arrière) comporte : une portion (en forme générale de rainure) centrale, qui forme un logement apte à recevoir une partie - dite avant - d'un poteau, et dont la section transversale est adaptée en conséquence à la section transversale du poteau, et qui comporte ladite paroi d'appui, et deux portions latérales de liaison, qui s'étendent le long de la portion centrale, de part et d'autre de celle-ci, sensiblement sur toute la hauteur de la pièce d'appui, qui comportent chacune au moins une rainure longitudinale (qui est verticale en position de liaison avec un poteau vertical) apte à recevoir une nervure de forme complémentaire qui est prévue sur une pièce complémentaire de la pièce d'appui, dite pièce - ou clef - de blocage ; lesdites pièces d'appui et de blocage étant aptes à entourer le poteau et aptes à s'emboîter l'une dans l'autre, par coulissement selon un mouvement parallèle à celui-ci, par leurs portions de liaison formant un genre de glissière.According to a preferred embodiment, the support piece, as well as said blocking piece, is constituted by an essentially hollow body, of plastic material, obtained by rotational molding, the part of which (called rear) comprises: a portion (in general form of groove) central, which forms a housing capable of receiving a part - called front - of a post, and whose cross section is adapted accordingly to the cross section of the post, and which comprises said bearing wall, and two lateral connecting portions, which extend along the central portion, on either side thereof, substantially over the entire height of the support piece, which each have at least one groove longitudinal (which is vertical in position of connection with a vertical post) able to receive a rib of complementary shape which is provided on a complementary piece of the support piece, called blocking piece - or key; said support and blocking parts being able to surround the post and able to fit into one another, by sliding in a movement parallel to it, by their connecting portions forming a kind of slide.
L'utilisation de la technique de rotomoulage pour la fabrication de la pièce de fixation et de la pièce de blocage facilite l'obtention de pièces creuses délimitées par des parois d'épaisseur sensiblement constante et dont la géométrie des faces externes est parfaitement maîtrisée, donc précise et reproductible ; cette technique permet par conséquent de réaliser avec une très bonne précision, en particulier ladite paroi destinée à venir en appui sur le poteau, ledit logement central destiné à recevoir (entourer) une partie du poteau ainsi que lesdits moyens intégrés de liaison par emboîtement. La précision géométrique de réalisation de ces parties desdites pièces permet ainsi d'obtenir un ajustement serré des pièces de liaison avec le poteau et permet par conséquent d'obtenir une liaison fiable.The use of the rotational molding technique for the manufacture of the fixing part and of the blocking part facilitates the obtaining of hollow parts delimited by walls of substantially constant thickness and whose geometry of the external faces is perfectly controlled, therefore precise and reproducible; this technique therefore makes it possible to produce with very good precision, in particular said wall intended to come to bear on the post, said central housing intended to receive (surround) part of the post as well as said integrated means of interlocking connection. The geometrical precision of these parts of said parts thus makes it possible to obtain a tight fit of the connecting parts with the post and consequently makes it possible to obtain a reliable connection.
Cette technique permet en outre d'aj uster l'épaisseur des parois à une valeur déterminée et permet que les parties desdites pièces qui forment les moyens intégrés de liaison soient elles-mêmes creuses ; il en résulte par conséquent une capacité déterminée de ces moyens intégrés de liaison à se déformer élastiquement, ce qui confère à ces parties de pièce une fonction de ressort assurant le blocage (en position de montage) des pièces de fixation entre elles ainsi que le blocage de ces pièces contre les faces externes du poteau, du fait des efforts d'appui résultant de cette élasticité ; cette élasticité permet en outre l'engagement mutuel de ces pièces dont la géométrie est précisément adaptée à celle du poteau.This technique also makes it possible to add the thickness of the walls to a determined value and allows the parts of said parts which form the integrated connecting means to be hollow themselves; this consequently results in a determined capacity of these integrated connecting means to deform elastically, which gives these parts of a part a spring function ensuring the blocking (in the mounting position) of the fastening parts between them as well as the blocking of these parts against the external faces of the post, due to the support forces resulting from this elasticity; this elasticity also allows the mutual engagement of these parts whose geometry is precisely adapted to that of the post.
Cette élasticité des parties formant glissière desdites pièces de liaison permet en outre à un opérateur d'effectuer l'engagement mutuel de deux pièces à la main, donc sans nécessiter l'utilisation d'un outil. Selon un mode pré féré de réalisation, chaque portion latérale comporte un demi-tenon et une demi-mortai se longitudinaux ; en particulier, le tenon et la mortaise correspondants sont en forme de queue d'hirondelle (queue-d'aronde) ; à cet e ffet, la section transversale de chacune des portions latérales de liai son comporte un pro fil en forme générale de " S " ou de " Z " .This elasticity of the slide-forming parts of said connecting parts also allows an operator to carry out the mutual engagement of two parts by hand, therefore without requiring the use of a tool. According to a preferred embodiment, each lateral portion comprises a longitudinal half-tenon and a half-mortai; in particular, the corresponding tenon and mortise are in the shape of a swallow's tail (dovetail); for this purpose, the cross section of each of the lateral portions of its connection comprises a profile in the general form of "S" or "Z".
Alors que la partie avant de la pièce d'appui pré sente une symétrie par rapport à un plan médian vertical qui contient l'axe vertical du poteau en po si tion d'as semblage, le s portions intégrée s de liaison peuvent être anti-symétriques - et de profil identique - en formant, pour l'une, un organe mâle de liaison (un demi-tenon) et pour l'autre un organe femelle de liaison (une demi-mortaise) ; ainsi, deux pièce s d'appui identiques disposée s tête-bêche de part et d'autre d'un poteau peuvent être as semblée s l'une à l'autre (en entourant le poteau) par ces organes intégrés de liaison, chacune j ouant - pour l'autre pièce d'appui - le rôle de la pièce de blocage décrite ci-avant ; alternativement lesdites portions intégrée s de liais on sont symétrique s par rapport au dit plan médian vertical.While the front part of the support piece has symmetry with respect to a vertical median plane which contains the vertical axis of the post in position, the integrated connecting portions can be symmetrical - and of identical profile - by forming, for one, a male connecting member (half a stud) and for the other a female connecting member (half a mortise); thus, two identical support pieces arranged s head-to-tail on either side of a post can be arranged together (by surrounding the post) by these integrated connecting members, each j ouantant - for the other support piece - the role of the locking piece described above; alternately, said integrated portions of links are symmetrical with respect to said vertical median plane.
Selon une variante de réalisation, chaque portion latérale de liai son intégrée comporte une nervure longitudinale de profil transversal en forme de "U " (c'est-à-dire généralement carré ou rectangulaire) , qui s'étend le long d'un talon longitudinal améliorant la ré si stance à l'arrachement de la liaison.According to an alternative embodiment, each lateral portion of its integrated link has a longitudinal rib of transverse profile in the shape of a "U" (that is to say generally square or rectangular), which extends along a heel longitudinal improving the resistance to tearing of the link.
Selon un autre aspect, l'invention consiste à proposer une pièce de fixation de li s se aux poteaux, qui comporte en partie dite avant, au moins deux (en particulier deux ou troi s) tronçons tubulaires qui sont intégrés à la pièce et forment deux moyeux (ou manchons ou embouts) superposés apte s à recevoir par emmanchement deux (respectivement troi s) éléments (tronçons) parallèles (superposé s) de lis se tubulaire creuse.According to another aspect, the invention consists in proposing a piece for fixing posts to the posts, which comprises, in the so-called front part, at least two (in particular two or three) tubular sections which are integrated into the room and form two superimposed hubs (or sleeves or end pieces) capable of receiving by fitting two (respectively three) parallel elements (sections) (superimposed) of hollow tubular lilies.
Ainsi, selon un aspect de l'invention, la barrière comporte deux ou trois lis se s tubulaires superposées qui sont fixées à chaque poteau par une pièce de liaison commune aux deux ou trois lisses ; par conséquent, lors d'un choc contre la barrière, les lisses de la barrière étant généralement sollicitées selon une ampleur inégale, la li s se soumise à la plus grande partie des efforts dus au choc transmet ces efforts au poteau par l'intermédiaire de l'intégralité de la face d'appui de la pièce de liaison commune aux lisses, ce qui augmente la résistance au choc de la barrière ; pour les mêmes raisons la résistance au déboîtement de la liaison entre les lisses et le poteau est augmentée du fait de la surface augmentée des portions des pièces de liaison qui assurent leur emboîtement mutuel.Thus, according to one aspect of the invention, the barrier comprises two or three superposed tubular lilies which are fixed to each post by a connecting piece common to the two or three healds; consequently, during an impact against the barrier, the beams of the barrier being generally urged to an uneven extent, the li s subjected to the greatest part of the forces due to the impact transmits these forces to the post by through the whole of the bearing face of the connecting piece common to the beams, which increases the impact resistance of the barrier; for the same reasons, the resistance to disengagement of the connection between the heddles and the post is increased due to the increased surface area of the portions of the connection parts which ensure their mutual interlocking.
De préférence, chaque pièce d'appui comporte quatre (ou six) embouts intégrés alignés deux à deux, parallèles entre eux deux à deux (horizontaux en position de montage) , qui sont de section circulaire et dont l'extrémité libre est chanfreinée, qui s'étendent symétriquement de part et d'autre d'un plan médian (vertical en position de montage) , et dont le rapport de la longueur au diamètre est situé dans une plage allant de 1 ,5 à 5, en particulier de 2 à 3.Preferably, each support piece has four (or six) integrated end pieces aligned two by two, parallel to each other two by two (horizontal in the mounting position), which are of circular section and whose free end is chamfered, which extend symmetrically on either side of a median plane (vertical in mounting position), and whose ratio of length to diameter is in a range from 1.5 to 5, in particular from 2 to 3.
La présence de deux embouts superposés intégrés permet de réaliser à moindre coût une barrière résistante dans laquelle les éléments de lisse superposés qui sont emmanchés sur les embouts sont de simples profilés extrudés, de préférence identiques et de section circulaire ; la résistance de la fixation des lisses aux poteaux est facilement reproductible, homogène tout le long d'une barrière, et peut être testée en usine, n'étant pas dépendante d'un effort variable de serrage sur le site d'un ou plusieurs boulons de fixation associés à chaque poteau ; l'utilisation d'au moins deux lisses profilées identiques superposées permet "d'obturer" efficacement l'espace s'étendant sous une glissière métallique, sans nécessiter l'emploi de profilés nervures qui sont complexes, coûteux et dont la reproductibilité des caractéristiques mécaniques est difficile à assurer. Cette conception peut en outre facilement être adaptée à la fabrication de pièces d'appui d'extrémité de barrière, par un aménagement simple et peu coûteux d'un moule de ces pièces, pour obtenir une pièce dissymétrique (gauche ou droite) équipée seulement de deux (ou trois) embouts superposés au lieu de quatre (ou six) . En outre, la partie de liaison des embouts avec la partie centrale de la pièce d'appui peut être munie d'une rainure centrale (et perpendiculaire aux axes des embouts) formant une zone de moindre résistance à des efforts de torsion selon un axe vertical, en particulier en formant un genre de soufflet, pour favoriser la déformation contrôlée de la pièce d'appui en permettant une rotation de faible amplitude des embouts selon l'axe de ladite rainure, afin de former une liaison pivotante de raideur prédéterminée.The presence of two integrated superimposed ends makes it possible to produce a resistant barrier at low cost in which the superimposed heald elements which are fitted on the ends are simple extruded profiles, preferably identical and of circular section; the resistance of the fixing of the beams to the posts is easily reproducible, homogeneous all along a barrier, and can be tested in the factory, not being dependent on a variable effort of tightening on the site of one or more bolts fixing associated with each post; the use of at least two identical superimposed beams effectively "closes" the space extending under a metal slide, without requiring the use of rib profiles which are complex, costly and whose reproducibility of mechanical characteristics is difficult to insure. This design can also easily be adapted to the manufacture of barrier end support parts, by a simple and inexpensive arrangement of a mold of these parts, to obtain an asymmetrical part (left or right) equipped only with two (or three) overlapping tips instead of four (or six). In addition, the connecting part of the end pieces with the central part of the support piece can be provided with a central groove (and perpendicular to the axes of the end pieces) forming a zone of least resistance to torsional forces along a vertical axis. , in particular by forming a kind of bellows, to favor the controlled deformation of the support part in allowing a small amplitude rotation of the end pieces along the axis of said groove, in order to form a pivoting connection of predetermined stiffness.
Dans le même but, les parois de la partie centrale (de la pièce d'appui) qui relie les embouts d'emmanchement de lisse aux organes intégrés de liaison avec un poteau peuvent également être ondulées et/ou former au moins une rainure (et/ou une nervure) , qui peut s'étendre le long d'un plan (vertical en position de montage) transversal parallèle aux embouts, pour former une zone de moindre résistance à des efforts de compression horizontale, en particulier en formant un genre de soufflet intégré à la pièce d'appui, qui permet sa déformation contrôlée en cas de choc et lui permet de continuer à remplir pleinement ses fonctions de liaison, et permet en outre de dissiper une partie de l'énergie du choc.For the same purpose, the walls of the central part (of the support piece) which connects the arm fitting ends to the integrated members for connecting to a post can also be corrugated and / or form at least one groove (and / or a rib), which may extend along a plane (vertical in the mounting position) transverse parallel to the end pieces, to form a zone of least resistance to horizontal compression forces, in particular by forming a kind of bellows integrated into the support piece, which allows its controlled deformation in the event of an impact and allows it to continue to fully fulfill its connecting functions, and also makes it possible to dissipate part of the energy of the impact.
Selon un autre aspect l'invention consiste en un procédé de fabrication de lisses tubulaires de barrière de sécurité par extrusion de matière plastique, dans lequel on provoque l'extrusion simultanée (coextrusion) , au travers d'une filière, de deux matières plastiques de propriété et/ou de nature différentes : une première matière pour former la partie interne de la paroi de la lisse tubulaire, et une deuxième matière pour former la partie externe de ladite paroi de lisse.According to another aspect, the invention consists of a method of manufacturing tubular security barrier beams by plastic extrusion, in which one causes the simultaneous extrusion (coextrusion), through a die, of two plastic materials of different property and / or type: a first material to form the internal part of the wall of the tubular heald, and a second material to form the external part of said heald wall.
Cette technique permet de choisir ladite première matière (interne) et de régler l'épaisseur de ladite partie interne de paroi de façon à optimiser notamment un ou plusieurs des paramètres suivants :This technique makes it possible to choose said first (internal) material and to adjust the thickness of said internal wall part so as to optimize in particular one or more of the following parameters:
^ coefficient de frottement de la face interne de la lisse sur le manchon de la pièce de liaison choisi pour faciliter l'emmanchement de la lisse, ^ accroître la résistance mécanique de la lisse ;^ coefficient of friction of the internal face of the arm on the sleeve of the connecting piece chosen to facilitate fitting of the arm, ^ increasing the mechanical resistance of the arm;
Cette technique permet en outre de choisir ladite deuxième matière (externe) et de régler l'épaisseur de ladite partie externe de paroi, de façon à optimiser notamment un ou plusieurs des paramètres suivants :This technique also makes it possible to choose said second (external) material and to adjust the thickness of said external wall part, so as to optimize in particular one or more of the following parameters:
^ choisir un coefficient de frottement (et/ou une rugosité) de la face externe de la lis se sur un habit et/ou un casque de motocycliste qui soit minimisé pour réduire la gravité des conséquences d'un choc, ^ optimiser la résistance aux intempéries et au rayonnement solaire^ choose a coefficient of friction (and / or roughness) of the external face of the lily on a suit and / or a motorcycle helmet which is minimized to reduce the severity of the consequences of an impact, ^ optimize resistance to weathering and solar radiation
(notamment ultraviolet) , ^ choisir une nuance de couleur et/ou des motifs adaptés à l'environnement de la barrière, ^ accroître la résistance mécanique de la lisse.(in particular ultraviolet), ^ choose a shade of color and / or patterns suited to the environment of the barrier, ^ increase the mechanical resistance of the barrier.
Cette technique permet en outre de diminuer le coût de la lisse grâce à la spécialisation fonctionnelle des couches interne et externe de la paroi.This technique also makes it possible to reduce the cost of the stringer thanks to the functional specialization of the internal and external layers of the wall.
Selon un mode préféré de réalisation ladite première matière est du polyéthylène haute densité recyclé, tandis que la deuxième matière est du polyéthylène haute densité non recyclé ; de préférence l'épaisseur de la couche (ou partie) interne de paroi est supérieure à celle de la couche (ou partie) externe de paroi.According to a preferred embodiment, said first material is recycled high density polyethylene, while the second material is non recycled high density polyethylene; preferably the thickness of the inner wall layer (or part) is greater than that of the outer wall layer (or part).
D'autres avantages et caractéristiques de l'invention apparaissent dans la description suivante qui se réfère aux dessins annexés, qui illustrent sans aucun caractère limitatif des modes préférentiels de réalisation de l'invention.Other advantages and characteristics of the invention appear in the following description which refers to the appended drawings, which illustrate without any limiting character the preferred embodiments of the invention.
Dans les dessins, les éléments identiques ou similaires portent, sauf indication contraire, les mêmes références d'une figure à l'autre.In the drawings, identical or similar elements, unless otherwise indicated, have the same references from one figure to another.
La figure 1 illustre en vue en perspective, selon un premier mode de réalisation de l'invention, une pièce de fixation à un poteau de deux lisses tubulaires et la pièce de blocage correspondante, en position de montage sur un poteau partiellement représenté.Figure 1 illustrates in perspective view, according to a first embodiment of the invention, a fastening piece to a post of two tubular rails and the corresponding locking piece, in the mounting position on a post partially shown.
La figure 2 illustre en perspective, une pièce de fixation, un poteau et une pièce de blocage, dans une position non assemblée ("éclatée"), ces pièces étant vues de dessus et coupées selon un plan horizontal passant par l'axe longitudinal d'un embout d'emmanchement de lisse tubulaire.Figure 2 illustrates in perspective, a fastener, a post and a locking piece, in an unassembled position ("exploded"), these parts being viewed from above and cut along a horizontal plane passing through the longitudinal axis d '' a tubular boom fitting.
La figure 3 illustre en vue frontale une pièce de fixation selon l'invention ; la figure 5 illustre la pièce de la figure 3, en vue en coupe selon un plan vertical médian, et est une vue selon V-V de la figure 3. La figure 4 illustre en vue de dessus deux pièces de fixation montées tête-bêche de part et d'autre d'un poteau, pour la réalisation d'une double barrière de sécurité.Figure 3 illustrates in front view a fastener according to the invention; Figure 5 illustrates the part of Figure 3, in sectional view along a vertical median plane, and is a view along VV of Figure 3. Figure 4 illustrates in top view two fasteners mounted head to tail from side and on the other side of a post, for the realization of a double safety barrier.
Les figures 3 à 5 illustrent une variante de réalisation de la liaison asymétrique en queue-d'aronde par rapport à celle des figures 1 et 2. La figure 6 illustre de façon similaire à la figure 1 , un autre mode de réali sation de la pièce de fixation et d'une pièce de blocage as sociée ; ce mode de réalisation diffère par la présence d'une articulation des embouts par un soufflet vertical médian en face avant, et par la géométrie des organe s intégrés de liai son.FIGS. 3 to 5 illustrate an alternative embodiment of the asymmetrical dovetail connection with respect to that of FIGS. 1 and 2. Figure 6 illustrates similarly to Figure 1, another embodiment of the fastener and a blocking part as associated; this embodiment differs by the presence of an articulation of the end pieces by a vertical vertical bellows on the front face, and by the geometry of the integrated components of its connection.
La figure 7 illustre en vue transversale l'utilisation de l'invention pour la réali sation d'une barrière de sécurité pour motocyclis tes fixée aux poteaux-supports d'une gli s sière métallique sous laquelle elle s'étend.FIG. 7 illustrates in transverse view the use of the invention for the production of a safety barrier for motorcycles fixed to the support posts of a metal slide under which it extends.
La figure 8 illustre en vue de des sus un dispo sitif de fixation de lis se à un poteau, pour une extrémité (terminale) d'une barrière.FIG. 8 illustrates a view from above of a device for fixing lilies to a post, for one (terminal) end of a barrier.
Les figures 9 et 1 0 illu strent, re spectivement en vue de profil et en vue de des sus, une variante de réalisation de l'invention, dans laquelle les glis sière s intégrée s à la pièce de liai son sont symétrique s par rapport à un plan vertical médian ; sur ce s deux figure s, deux pièce s de liaison identique s sont utilisées pour former une double barrière ; ces deux pièces de liaison sont accolée s do s à dos et solidari sée s par emboîtement à l'aide de deux pièces de blocage identiques supplémentaires munies chacune de deux glis sières et de forme adaptée à la section transversale en "I" du poteau ; la figure 1 1 illustre en vue en perspective une de ces pièces de blocage supplémentaires .Figures 9 and 1 0 illu strent, re spectively in profile view and in view of above, an alternative embodiment of the invention, in which the rails s integrated s to the connecting piece are symmetrical s relative to a vertical median plane; in this two figures, two identical connecting pieces are used to form a double barrier; these two connecting pieces are joined s do s back and joined s by interlocking using two additional identical locking pieces each provided with two slides and of shape adapted to the cross section in "I" of the post; Figure 1 1 illustrates in perspective one of these additional locking parts.
Les figures 12 à 1 7 illustrent en vue de de s su s (" éclatée") six autre s configurations de pièces de blocage, qui sont adaptées pour différentes formes (en U, en C, en S, en I, en O) et orientation du poteau ; ces cinq systèmes utilisent la même pièce de liaison lisse/poteau équipée de manchons ; les systèmes de liaison des figures 14 à 1 7 utilisent deux clefs de blocage supplémentaires fonctionnellement identiques à celles des figures 1 0 et 1 1 mais qui différent par leurs dimensions et par la forme de leur paroi d'appui sur le poteau qui est adaptée à la forme de celui-ci.Figures 12 to 1 7 illustrate in view of s su s ("exploded") six other s configurations of locking pieces, which are adapted for different shapes (U, C, S, I, O) and orientation of the post; these five systems use the same smooth connection piece / post fitted with sleeves; the connection systems of FIGS. 14 to 1 7 use two additional locking keys functionally identical to those of FIGS. 1 0 and 1 1 but which differ in their dimensions and in the shape of their support wall on the post which is adapted to the shape of it.
La figure 1 8 illustre en perspective « éclatée » une pièce de liaison comportant deux embouts alignés pour supporter deux tronçons successifs d'une seule lisse, ainsi qu'une pièce de blocage équipée de deux glissières latérales de forme complémentaire à celle des glissières latérales de la pièce support de lisse ; ces pièces sont de forme adaptée à celle d'un poteau dont la section transversale épouse un profil en forme de C. Le dispositif de fixation de lisses illustré fig 1 , 2, 6 à 8, 12 , 13, 18, comporte une pièce d'appui 1 plaquée contre la face avant 50 du poteau 6 et une clef de blocage 2 disposée en partie arrière de celui-ci ; ces deux pièces encerclent le poteau de maintien 6 (d'axe 22 vertical et de section en forme de " C") de la glissière de sécurité, une fois leur emboîtement mutuel réalisé ; deux lisses tubulaires superposées 3 sont emmanchées coulissantes sur les bras 4 (ou embouts tubulaires) de la boîte de départ 5 formant la partie avant de la pièce 1 .Figure 1 8 illustrates an “exploded” perspective view of a connecting piece comprising two end pieces aligned to support two successive sections of a single stringer, as well as a locking piece equipped with two lateral slides of a shape complementary to that of the lateral slides of the heald support piece; these parts are of shape adapted to that of a post whose cross section matches a C-shaped profile. The heald fixing device illustrated in fig 1, 2, 6 to 8, 12, 13, 18, comprises a support piece 1 pressed against the front face 50 of the post 6 and a locking key 2 arranged in the rear part of that -this ; these two parts encircle the retaining post 6 (of vertical axis 22 and of section in the shape of "C") of the safety barrier, once their mutual interlocking produced; two superimposed tubular rails 3 are slidably fitted onto the arms 4 (or tubular ends) of the starting box 5 forming the front part of the part 1.
Ces pièces 1 ,2 de liaison peuvent être fabriquées en polyéthylène, en mélange éventuel avec d'autres matières telles que des déchets d'emballage.These connecting pieces 1, 2 can be made of polyethylene, possibly mixed with other materials such as packaging waste.
L'invention peut être utilisée pour la sécurité routière (routes, autoroutes) et peut aussi s'appliquer pour la sécurité des pistes de karting ou de courses motocyclistes.The invention can be used for road safety (roads, motorways) and can also be applied for the safety of go-kart tracks or motorcycle races.
Les figures 2 et 18 notamment montrent (en coupe) le moyen de fixation de la pièce d'appui 1 avec la clef 2 et le poteau 6 ; la pièce d'appui 1 comporte sur son arrière (côté poteau 6) une paroi 8 d'appui qui contribue à délimiter un logement 51 ou cavité en forme de rainure verticale apte à englober sur sa largeur le poteau de maintien 6 ; cette paroi 8 est prolongée latéralement par une demi-queue d'aronde femelle 9 (fig 2) , dans lequel vient s'insérer la demi-queue d'aronde mâle 10 de la clef 2 ; du côté opposé est prévue une demi-queue d'aronde mâle 1 1 de la pièce d'appui 1 , qui est apte à s'insérer dans la demi-queue d'aronde femelle 12 de la clef 2, permettant ainsi l'emprisonnement du poteau 6.Figures 2 and 18 in particular show (in section) the means for fixing the support piece 1 with the key 2 and the post 6; the support piece 1 has on its rear (post side 6) a support wall 8 which contributes to delimiting a housing 51 or cavity in the form of a vertical groove capable of encompassing, over its width, the support post 6; this wall 8 is extended laterally by a female half dovetail 9 (fig 2), into which is inserted the male half dovetail 10 of the key 2; on the opposite side is provided a male half dovetail 1 1 of the support piece 1, which is capable of being inserted in the female half dovetail 12 of the key 2, thus allowing imprisonment post 6.
Comme on peut le constater sur les figures 2, 4 et 8, la queue d'aronde est inverse à une queue d'aronde classique ; en d'autres termes, les deux demi-queues d'aronde gauche et droite intégrées en face arrière de la pièce 1 d'appui — comme celles intégrées en face avant de la clef de blocage — ne sont pas symétriques par rapport au plan médian 20 (figure 3) vertical, mais sont au contraire identiques de façon à former pour l'une, un organe mâle et pour l'autre un organe femelle de liaison ; grâce à cette structure, la pièce d'appui 1 peut s'emboîter dans une autre pièce d'appui 1 disposé du côté opposé (arrière) du poteau, pour constituer une double glissière de sécurité disposée de façon centrale par rapport à la route (voir figure 4), sans nécessiter de pièce de liaison supplémentaire, à la différence des réalisations illustrées figures 10 et 14 à 17.As can be seen in Figures 2, 4 and 8, the dovetail is opposite to a conventional dovetail; in other words, the two left and right half dovetails integrated on the rear face of the support piece 1 - like those integrated on the front face of the locking key - are not symmetrical with respect to the median plane 20 (Figure 3) vertical, but on the contrary are identical so as to form for one, a male member and for the other a female connecting member; thanks to this structure, the support piece 1 can fit into another support piece 1 arranged on the opposite (rear) side of the post, to form a double safety barrier arranged centrally with respect to the road ( see Figure 4), without requiring an additional connecting piece, unlike the embodiments illustrated in Figures 10 and 14 to 17.
Afin de réaliser un blocage plus efficace vis à vis d'un choc violent, et en fonction de la flexibilité du corps creux de la pièce 1, les angles internes des queues d'aronde sont pourvus de talons 13 protubérants aptes à réaliser un blocage optimum de liaison entre la pièce 1 d'appui et la clef 2, et aptes aussi à reprendre les efforts de flexion, de façon à contrarier le glissement (et/ou le déboîtement) de la clef 2 par rapport à la pièce d'appui 1. De plus, la face interne de la clef 2 possède au droit du milieu du poteau 6, deux languettes longitudinales protubérantes 14 aptes à venir s'insérer dans l'ouverture 15 verticale du poteau 6 (de section transversale en « C »), de façon à permettre la reprise des efforts latéraux, donc d'empêcher la rotation de la clef. La jonction de la partie arrière de la pièce d'appui 1 avec sa partie avant 5 de liaison avec les embouts tubulaires 4, se réalise par un corps 16 de forme générale tronconique et allongée verticalement.In order to achieve a more effective blocking against a violent shock, and depending on the flexibility of the hollow body of the part 1, the internal angles of the dovetails are provided with protruding heels 13 capable of achieving optimum blocking. of connection between the support piece 1 and the key 2, and also able to take up bending forces, so as to counteract the sliding (and / or disengagement) of the key 2 relative to the support piece 1 In addition, the internal face of the key 2 has, in line with the center of the post 6, two protuberant longitudinal tongues 14 able to be inserted into the vertical opening 15 of the post 6 (of cross section at "C"), so as to allow the recovery of lateral forces, thus preventing rotation of the key. The junction of the rear part of the support piece 1 with its front part 5 of connection with the tubular end pieces 4, is achieved by a body 16 of generally frustoconical shape and elongated vertically.
Ce corps 16 (fig 2, 4, 8)est pourvu sur son pourtour d'une onde (soufflet) 18 périphérique apte à la déformation en compression afin de reprendre une partie de l'énergie occasionnée par le choc direct sur la partie (boîte) 5 par le motocycliste, choc pouvant être perpendiculaire ou parallèle à la pièce d'appui.This body 16 (fig 2, 4, 8) is provided on its periphery with a peripheral wave (bellows) 18 capable of deformation in compression in order to take up part of the energy caused by the direct impact on the part (box ) 5 by the motorcyclist, shock may be perpendicular or parallel to the support piece.
Les figures 3, 5 et 7 montrent la présence d'un becquet (ou talon) protubérant 19 en partie basse de la pièce d'appui 1 et de la clef de blocage 2, venant reposer sur le sol pour assurer un positionnement fiable et répétitif en hauteur.Figures 3, 5 and 7 show the presence of a spoiler (or heel) protruding 19 in the lower part of the support piece 1 and the locking key 2, coming to rest on the ground to ensure reliable and repetitive positioning in height.
Les figures 1 et 3 à 6 montrent que la partie avant (boîte à tubes) 5 de la pièce 1 comporte quatre départs de portions de tubes dénommés bras ou embouts ou manchons 4, intégrés à la pièce d'appui 1, ces bras étant disposés superposés verticalement deux à deux, de part et d'autre du plan vertical médian 20 du support 1, parallèle entre eux et à la route ; dans le cas particulier illustré fig 18, la pièce 1 comporte seulement deux manchons 4 alignés selon l'axe 21 et aptes à supporter chacun un tronçon de lisse 3, pour réaliser une barrière à une seule lisse ; dans une variante non représentée, la pièce de liaison peut comporter 6 manchons superposés et alignés 2 à 2 pour réaliser une barrière comportant 3 lis ses superposées.FIGS. 1 and 3 to 6 show that the front part (tube box) 5 of the part 1 comprises four starts of tube portions called arms or end pieces or sleeves 4, integrated into the support part 1, these arms being arranged vertically superimposed two by two, on either side of the median vertical plane 20 of the support 1, parallel to each other and to the road; in the particular case illustrated in fig 18, the part 1 comprises only two sleeves 4 aligned along the axis 21 and capable of each supporting a section of heddle 3, to produce a barrier with a single heald; in a variant not shown, the connecting piece may include 6 superimposed sleeves and aligned 2 to 2 to produce a barrier comprising 3 reads its superimposed.
Ces bras (d'axe 21 superposés) permettent d'obtenir une grande flexibilité de la barrière en cas de choc perpendiculaire à la route, afin d'amortir le choc du motocycliste.These arms (of axis 21 superimposed) make it possible to obtain great flexibility of the barrier in the event of an impact perpendicular to the road, in order to absorb the impact of the motorcyclist.
Ces bras 4 reçoivent par emboîtement les lisses tubulaires de section circulaire 3 afin de combler le vide sous la glissière de sécurité existante pour empêcher l'encastrement du motocycliste ; ils ont pour effet, par la flexibilité propre des lisses tubulaires 3 et par la souplesse des bras 4, d'absorber l'énergie du choc, sans provoquer d'effet ressort ; l'énergie est donc transmise à l'ensemble des éléments constituant la barrière.These arms 4 receive by interlocking the tubular rails of circular section 3 in order to fill the void under the existing safety barrier to prevent the embedding of the motorcyclist; they have the effect, by the inherent flexibility of the tubular rails 3 and by the flexibility of the arms 4, of absorbing the energy of the impact, without causing a spring effect; energy is therefore transmitted to all of the elements constituting the barrier.
A l'aide d'une pièce 2 de blocage, la pièce 1 d'appui se fixe par son arrière, sous la glissière métallique (23 figure 7) au droit des faces avant (côté route) des poteaux de fixation de la glissière de sécurité ; le maintien de la pièce d'appui 1 vis-à-vis du poteau 6 est obtenu par l'intermédiaire d'une clef 2 de blocage (en plastique rotomoulé) venant s'emboîter verticalement par l'arrière haut de la pièce d'appui ; les pièces 1 , 2 possèdent pour cette fixation une double liaison à glissière s'étendant de préférence sur toute la hauteur des deux pièces, la queue d'aronde de la clef 2 ayant la particularité de venir directement en contact entre le poteau et la pièce d'appui assurant ainsi un serrage efficace de l'ensemble, pièce d'appui, poteau et clef, et d'en faciliter le montage, sans outillage particulier, ni autres moyens de fixation comme des vis ou boulons.Using a blocking piece 2, the support piece 1 is fixed by its rear, under the metal slide (23 FIG. 7) to the right of the front faces (road side) of the fixing posts of the slide of security ; maintaining the support piece 1 vis-à-vis the post 6 is obtained by means of a locking key 2 (rotomolded plastic) coming to fit vertically from the top rear of the piece support; parts 1, 2 have for this fixing a double slide connection preferably extending over the entire height of the two parts, the dovetail of the key 2 having the particularity of coming directly into contact between the post and the part support thus ensuring effective clamping of the assembly, support piece, post and key, and facilitate assembly, without special tools, or other fixing means such as screws or bolts.
La partie avant 5 de la pièce 1 d'appui forme une boîte profilée sur deux faces parallèles de laquelle font saillie quatre bras 4 latéraux de forme tubulaire, fermés par une paroi 52 (intégrée au corps 16) à leur extrémité libre, et munis d'un chanfrein 53 ; ces bras formant des supports de lisses tubulaires, situés à droite et à gauche de la pièce d'appui, peuvent s'étendre chacun sur une longueur représentant environ un cinquième de la distance entre deux poteaux . Le solde de la distance à combler entre deux poteaux, pour supprimer l'encastrement du motocycliste est réalisé par l'emboîtement des lisses tubulaires rapportées sur les départs des quatre bras de la pièce d'appui, par recouvrement. Ce montage permet d'obtenir un montage simple et de répondre à toutes les variations d'écarts entre poteaux : il suffit pour cela de couper un tronçon de lisse de longueur adaptée à l'écartement entre deux poteaux successifs. En deuxième lieu, la structure du corps creux moulé (et généralement fermé) de la pièce 1 permet une flexion des manchons 4 supportant les lisses tubulaires vis à vis de la boîte à tubes ; les déformations obtenues, par la souplesse du matériau, et par la conception de la pièce d'appui creuse permettent d'absorber une partie de l'énergie d'un choc ; dans le cas d'un choc très violent, une déformation latérale de la pièce d'appui peut être facilitée par l'onde (soufflet) centrale 54 illustrée fig 6 et s'étendant symétriquement par rapport au plan médian 20.The front part 5 of the support piece 1 forms a profiled box on two parallel faces from which protrude four lateral arms 4 of tubular shape, closed by a wall 52 (integrated into the body 16) at their free end, and provided with 'a chamfer 53; these arms forming supports for tubular beams, located to the right and to the left of the support piece, can each extend over a length representing approximately one fifth of the distance between two posts. The balance of the distance to be filled between two posts, to remove the embedding of the motorcyclist is achieved by the interlocking of the tubular beams reported on the departures of the four arms of the support piece, by overlap. This assembly makes it possible to obtain a simple assembly and to respond to all the variations in spacing between posts: it suffices for this to cut a section of heddle of length adapted to the spacing between two successive posts. Secondly, the structure of the molded (and generally closed) hollow body of the part 1 allows bending of the sleeves 4 supporting the tubular beams with respect to the tube box; the deformations obtained, by the flexibility of the material, and by the design of the hollow support piece allow part of the energy of an impact to be absorbed; in the case of a very violent impact, lateral deformation of the support piece can be facilitated by the central wave (bellows) 54 illustrated in FIG. 6 and extending symmetrically relative to the median plane 20.
Lors d'un choc, la pièce d'appui permet de transmettre les efforts aux poteaux métalliques, d'assurer le positionnement des lisses tubulaires, de rigidifier celles-ci, d'assurer la continuité des lisses au droit des poteaux, et de faire contribuer des tronçons de lisse non exposés au choc à la résistance de la barrière, en leur transmettant une partie des efforts.During an impact, the support piece makes it possible to transmit the forces to the metal poles, to ensure the positioning of the tubular beams, to stiffen them, to ensure the continuity of the beams in line with the poles, and to make contribute sections of boom not exposed to shock to the resistance of the barrier, by transmitting part of the forces to them.
La transmission des efforts au poteau se réalise notamment par un écrasement contrôlé de la pièce d'appui, ceci afin de limiter les efforts. Les embouts 4 intégrés renforcent les extrémités de la lisse soumise à la flexion.The transmission of forces to the post is achieved in particular by a controlled crushing of the support piece, this in order to limit the forces. The integrated nozzles 4 reinforce the ends of the boom subjected to bending.
Afin d'assurer la continuité, le manchon 4 intégré à notamment pour rôle de rigidifier progressivement la lisse au voisinage de la pièce d'appui.To ensure continuity, the sleeve 4 integrated in particular for the role of gradually stiffening the beam in the vicinity of the support piece.
Il est en effet important d'avoir une déformation la plus continue possible afin d'éviter la présence d'un "point dur" le long de la barrière, qui serait susceptible de conduire à des décélérations trop importantes.It is indeed important to have the most continuous deformation possible in order to avoid the presence of a "hard point" along the barrier, which would be likely to lead to too large decelerations.
A la différence des systèmes de liaison illustrés figures 1, 2, 8, 12, 13, 18 en particulier, qui comportent une seule pièce de blocage coopérant avec la pièce support de lisse pour former un collier enserrant le poteau, les systèmes de fixation illustrés figures 10 et l4 à l7 comportent en outre au moins une paire de pièces latérales 60, 61, 62 de blocage dites supplémentaires, de fonction sensiblement identique et de structure similaire à celle illustrée figure 11. Cette dernière 61 se présente sous la forme d'une embase 64 en forme de plaque plane rectangulaire épaisse sur une face 65 principale avant de laquelle font saillie trois nervures 66 à 68 parallèles à l'axe 69, délimitant ainsi deux à deux, deux rainures parallèles 70, 71 ; les variantes de réalisation 60, 62 illustrées fig 10, 16, 17 ne possèdent que deux nervures parallèles délimitant une seule rainure.Unlike the connection systems illustrated in FIGS. 1, 2, 8, 12, 13, 18 in particular, which comprise a single blocking part cooperating with the heald support part to form a collar enclosing the post, the fixing systems illustrated FIGS. 10 and 14 to 17 further comprise at least one pair of side pieces 60, 61, 62 of so-called additional blocking devices, of substantially identical function and of structure similar to that illustrated in FIG. 11. The latter 61 is in the form of a base 64 in the form of a thick rectangular flat plate on a main face 65 before which three ribs 66 to 68 project parallel to the axis 69, thus delimiting two by two, two grooves parallels 70, 71; the variant embodiments 60, 62 illustrated in fig 10, 16, 17 have only two parallel ribs delimiting a single groove.
Ces pièces latérales 60 à 62 sont réalisées en matière plastique, par extrusion, par rotomoulage ou par inj ection et présentent de préférence une hauteur 72 — mesurée selon l'axe 69 des nervures 66-68 — qui est égale ou peu différente d'un sous multiple de la hauteur de la pièce support de lisse et/ou de la hauteur de la pièce 2 de blocage arrière ; ceci permet un assemblage facile du système de fixation lorsque le coulissement vertical descendant de la pièce 2 arrière par rapport à la pièce 1 est rendu délicat ou impossible, par exemple en raison d'un espace libre sous une lisse existante (telle que 23 fig 7) dont la hauteur est inférieure à la somme des hauteur des pièces 1 et 2.These side pieces 60 to 62 are made of plastic, by extrusion, by rotational molding or by injection, and preferably have a height 72 - measured along the axis 69 of the ribs 66 - 68 - which is equal to or little different from a under multiple of the height of the heald support piece and / or the height of the rear locking piece 2; this allows easy assembly of the fastening system when the vertical downward sliding of the rear part 2 relative to the part 1 is made delicate or impossible, for example due to a free space under an existing heald (such as 23 fig 7 ) whose height is less than the sum of the height of parts 1 and 2.
L'assemblage est alors réalisé de la façon suivante : les pièces 1 et 2 sont rapprochées l'une de l'autre jusqu'à venir en contact l'une avec l'autre par leur paroi arrière (sensiblement plane) respective 80, 81 , depuis une position écartée du poteau telle qu'illustré fig 12 à 17 notamment, j usqu'à la position de contact telle que celle illustrée fig 10 ; une pièce latérale gauche de blocage supplémentaire est introduite dans l'espace restant libre entre la face externe latérale gauche du poteau et les deux glissières (telles que repérées 100, 1 01 fig 14) équipant respectivement les pièces 1 et 2, par glissement descendant le long du poteau ; la même opération est effectuée du coté droit avec une deuxième pièce latérale identique à la première ; si la hauteur de ces pièces est égale à la demi-hauteur des pièces 1 , 2, cette opération est répétée (une fois) à gauche et à droite, de sorte que l'on obtient, le long de chaque face latérale du poteau un empilement (d'au moins deux) desdites pièces supplémentaires de blocage latéral ; cet empilement, qui est intimement emboîté dans les glissières des pièces principales 1 , 2 et qui s'appuie — grâce à la forme de la face principale arrière 1 10 des pièces latérales qui est adaptée au profil transversal du poteau — sur la face latérale externe du poteau, assure une liaison fiable entre les pièces 1 et 2 et le poteau.The assembly is then carried out as follows: the parts 1 and 2 are brought closer to each other until they come into contact with each other by their respective rear wall (substantially flat) 80, 81 , from a position away from the post as illustrated in fig 12 to 17 in particular, j usqu'à the contact position such as that illustrated in fig 10; an additional left lateral locking part is introduced into the remaining free space between the left lateral external face of the post and the two slides (as marked 100, 1 01 fig 14) equipping parts 1 and 2 respectively, by sliding downwards along the post; the same operation is carried out on the right side with a second side piece identical to the first; if the height of these pieces is equal to the half-height of pieces 1, 2, this operation is repeated (once) on the left and on the right, so that one obtains, along each lateral face of the post a stacking (at least two) of said additional lateral locking pieces; this stack, which is intimately fitted into the runners of the main parts 1, 2 and which is supported - thanks to the shape of the rear main face 1 10 of the side parts which is adapted to the transverse profile of the post - on the external lateral face of the post, ensures a reliable connection between parts 1 and 2 and the post.
Les lisses peuvent être obtenues par extrusion simultanée de PEHD recyclé formant la partie interne d'un tube de section circulaire, dont l'épaisseur est voisine de 2 à 6 millimètres, et PEHD non recyclé et teinté dans la masse formant la partie externe du tube, dont l'épaisseur est voisine de 1 à 4 millimètres ; ceci peut permettre d'obtenir une face interne (90 figure 1 8) dont la rugosité est supérieure à celle de la face externe (91 figure 1 8) de la lisse. The beams can be obtained by simultaneous extrusion of recycled HDPE forming the internal part of a tube of circular section, the thickness of which is close to 2 to 6 millimeters, and non-recycled HDPE tinted in the mass forming the external part of the tube , whose thickness is close to 1 to 4 millimeters; this can make it possible to obtain an internal face (90 FIG. 1 8) whose roughness is greater than that of the external face (91 FIG. 1 8) of the heddle.

Claims

REVENDICATIONS
1. Pièce (1) de liaison d'une lisse (3) tubulaire à un poteau (6) d'une barrière de sécurité, caractérisée en ce qu'elle comporte un moyen intégré de liaison à emboîtement avec une autre pièce (1 , 2, 60 à 62) de liaison, pour sa solidarisation au poteau, et en ce qu'elle comporte au moins un manchon (4) formant support d'une extrémité de lisse.1. Piece (1) for connecting a heald (3) tubular to a post (6) of a safety barrier, characterized in that it comprises an integrated means for interlocking connection with another piece (1, 2, 60 to 62) for connection, for its attachment to the post, and in that it comprises at least one sleeve (4) forming a support for one end of the heddle.
2. Pièce (1) selon la revendication 1 dans laquelle ledit moyen intégré de liaison comporte deux éléments (9, 10, 1 1 , 12, 13, 101 , 103) de glissière parallèles disposés de part et d'autre d'une paroi (8) d'appui sur une face externe du poteau (6), de façon symétrique ou antisymétrique.2. Piece (1) according to claim 1 wherein said integrated connecting means comprises two elements (9, 10, 1 1, 12, 13, 101, 103) of parallel slide arranged on either side of a wall (8) bearing on an external face of the post (6), symmetrically or asymmetrically.
3. Pièce (1) selon la revendication 2, dans laquelle les éléments de glissière sont creux et/ou élastiquement déformables.3. Part (1) according to claim 2, wherein the slide elements are hollow and / or elastically deformable.
4. Pièce (1) selon l'une quelconque des revendications 1 à 3 dans laquelle le moyen intégré de liaison à emboîtement comporte une première portion latérale de liaison comportant un demi tenon longitudinal, et ledit moyen comporte une deuxième portion latérale de liaison comportant une demi mortaise longitudinale, lesdites portions latérales formant une glissière et s'étendant de part et d'autre d'un logement central apte à recevoir une partie d'un poteau (6).4. Piece (1) according to any one of claims 1 to 3 wherein the integrated interlocking connection means comprises a first lateral connection portion comprising a longitudinal half lug, and said means comprises a second lateral connection portion comprising a longitudinal half mortise, said lateral portions forming a slide and extending on either side of a central housing adapted to receive part of a post (6).
5. Pièce (1) selon l'une quelconque des revendications 1 à 3, qui comporte une portion centrale en forme générale de rainure qui forme un logement apte à recevoir une partie avant d'un poteau (6), et qui comporte deux portions latérales de liaison qui s'étendent le long de la portion centrale, de part et d'autre de celle-ci, sensiblement sur toute la hauteur de la pièce (1 ) , chaque portion latérale comportant au moins une rainure longitudinale verticale apte à recevoir une nervure de forme complémentaire prévue sur une pièce de blocage (2, 60 à 62) complémentaire de la pièce (1). 5. Piece (1) according to any one of claims 1 to 3, which comprises a central portion in the general shape of a groove which forms a housing capable of receiving a front portion of a post (6), and which comprises two portions lateral connection which extend along the central portion, on either side thereof, substantially over the entire height of the part (1), each lateral portion comprising at least one vertical longitudinal groove capable of receiving a rib of complementary shape provided on a blocking part (2, 60 to 62) complementary to the part (1).
6. Pièce (1) selon l'une quelconque des revendications 1 à 5, qui est essentiellement constituée d'un corps (16) creux en matière plastique.6. Part (1) according to any one of claims 1 to 5, which essentially consists of a hollow body (16) of plastic.
7. Pièce (1) selon l'une quelconque des revendications 1 à 6, qui comporte 4 embouts (4) intégrés superposés deux à deux et de section circulaire. 7. Piece (1) according to any one of claims 1 to 6, which comprises 4 integrated ends (4) superimposed two by two and of circular section.
8. Pièce (1) selon l'une quelconque des revendications 1 à 7, qui comporte une onde ou rainure (18) périphérique facilitant la déformation en compression du corps (16) de la pièce.8. Part (1) according to any one of claims 1 to 7, which comprises a peripheral wave or groove (18) facilitating the deformation in compression of the body (16) of the part.
9. Pièce (1) selon l'une quelconque des revendications 1 à 8, qui comporte une onde ou rainure médiane (54) facilitant la déformation du corps (16) de la pièce par pivotement des embouts (4) intégrés.9. Part (1) according to any one of claims 1 to 8, which comprises a wave or central groove (54) facilitating the deformation of the body (16) of the part by pivoting of the integrated ends (4).
10. Système pour la construction d'une barrière de sécurité routière fixée au sol par des poteaux (6), qui comporte, pour chaque poteau, une pièce de fixation (1) de lisses (3) selon l'une quelconque des revendications 1 à 9, 23 ou 24, et une pièce de blocage (2, 60 à 62) qui comporte un moyen intégré de liaison à emboîtement.10. System for the construction of a road safety barrier fixed to the ground by posts (6), which comprises, for each post, a fixing piece (1) of beams (3) according to any one of claims 1 to 9, 23 or 24, and a blocking part (2, 60 to 62) which comprises an integrated interlocking connection means.
1 1. Système selon la revendication 8, qui comporte des tronçons de lisses (3) en matière plastique extrudée et de section circulaire, et qui est dénué d'organes métalliques séparables de liaison tels que vis ou boulons.1 1. System according to claim 8, which comprises heddle sections (3) of extruded plastic and circular section, and which is devoid of separable metal connecting members such as screws or bolts.
12. Système selon la revendication 10 ou 1 1 qui comporte au moins deux pièces (2, 60 à 62) de blocage comportant chacune au moins un élément de glissière tel qu'une nervure pour former ledit moyen de liaison à emboîtement, par coulissement. 12. The system of claim 10 or 1 1 which comprises at least two locking parts (2, 60 to 62) each comprising at least one slide element such as a rib to form said interlocking connecting means, by sliding.
13. Système selon la revendication 12 dans lequel au moins une pièce (2) de blocage a une hauteur voisine de celle de ladite pièce (1) de liaison de lisse.13. The system of claim 12 wherein at least one blocking piece (2) has a height close to that of said heald connecting piece (1).
14. Système selon la revendication 12 ou 13 dans lequel au moins une pièce (60 à 62) de blocage a une hauteur voisine d'un sous multiple, en particulier d'un demi, d'un tiers, ou d'un quart de la hauteur de ladite pièce (1) de liaison de lisse.14. The system of claim 12 or 13 wherein at least one blocking part (60 to 62) has a height close to a sub-multiple, in particular a half, a third, or a quarter of the height of said heald link piece (1).
15. Barrière de sécurité qui comporte au moins deux lisses (3) tubulaires creuses parallèles, superposées qui sont fixées à un poteau (6) par une pièce (1) de liaison commune aux dites au moins deux lisses (3). 15. Safety barrier which comprises at least two beams (3) superimposed hollow hollow tubulars which are fixed to a post (6) by a part (1) connecting common to said at least two beams (3).
16. Barrière selon la revendication 15 dans laquelle ladite pièce (1) de liaison est conforme à l'une quelconque des revendications 1 à 9, 23 ou 24.16. Barrier according to claim 15 wherein said connecting piece (1) conforms to any one of claims 1 to 9, 23 or 24.
17. Barrière de sécurité qui comporte une lisse (23) métallique fixée au sol par des poteaux (6), une pièce de fixation (1 ) selon l'une quelconque des revendications 1 à 9, 23 ou 24, au moins une pièce de blocage (2) comportant un moyen intégré de liaison à emboîtement, dans laquelle les pièces (1 ,2) sont associées et fixées par emboîtement mutuel à chaque poteau, et au moins un tronçon de lisse (3) extrudé en matière plastique, qui est emmanché à chaque extrémité et s'étend sous la lisse métallique.17. Safety barrier which comprises a metal rail (23) fixed to the ground by posts (6), a fixing piece (1) according to one any one of claims 1 to 9, 23 or 24, at least one blocking part (2) comprising an integrated interlocking connection means, in which the parts (1, 2) are associated and fixed by mutual interlocking to each post, and at least one section of heddle (3) extruded in plastic, which is fitted at each end and extends under the metal heddle.
18. Procédé de fabrication par rotomoulage d'une pièce (1) de liaison selon l'une quelconque des revendications 1 à 9, 23 ou 24.18. A method of manufacturing by rotational molding of a connecting piece (1) according to any one of claims 1 to 9, 23 or 24.
19. Procédé de fabrication d'une lisse (3) tubulaire creuse, destinée à la réalisation d'une barrière caractérisé en ce que l'on co-extrude deux matières plastique de nature et/ou de propriété différentes.19. A method of manufacturing a hollow tubular smooth (3), intended for producing a barrier, characterized in that two plastic materials of different nature and / or property are co-extruded.
20. Lisse (3) tubulaire pour une barrière de sécurité telle que celle des revendications 15 à 17, caractérisée en ce que sa paroi est constituée de deux matières plastiques co-extrudées de nature et/ou de propriété différentes.20. Smooth (3) tubular for a safety barrier such as that of claims 15 to 17, characterized in that its wall consists of two co-extruded plastics of different nature and / or property.
21 . Lisse (3) creuse selon la revendication 20 dont l'épaisseur de la portion interne de paroi constituée d'une première matière plastique est supérieure à l'épaisseur de la portion externe de paroi constituée d'une deuxième matière plastique. 21. Smooth (3) hollow according to claim 20, the thickness of the inner wall portion made of a first plastic material is greater than the thickness of the outer wall portion made of a second plastic material.
22. Lisse (3) selon la revendication 20 ou 21 qui est essentiellement constituée de polyéthylène.22. Smooth (3) according to claim 20 or 21 which is essentially made of polyethylene.
23. Pièce (1) de liaison d'une lisse (3) tubulaire à un poteau (6) d'une barrière de sécurité, caractérisée en ce qu'elle comporte un manchon (4) formant support d'une extrémité de lisse, et en ce qu'elle comporte une zone (18,54) de moindre résistance pour favoriser sa déformation contrôlée en cas de choc.23. Piece (1) for connecting a heald (3) tubular to a post (6) of a safety barrier, characterized in that it includes a sleeve (4) forming a support for one end of heald, and in that it comprises a zone (18,54) of least resistance to promote its controlled deformation in the event of impact.
24. Pièce (1) de liaison d'une lisse (3) tubulaire à un poteau (6) d'une barrière de sécurité, caractérisée en ce qu'elle comporte un moyen intégré de liaison à emboîtement avec une autre pièce (1 , 2, 60 à 62) de liaison, pour sa solidarisation au poteau, et en ce qu'elle comporte une zone (18,54) de moindre résistance pour favoriser sa déformation contrôlée en cas de choc. 24. Piece (1) for connecting a heald (3) tubular to a post (6) of a safety barrier, characterized in that it comprises an integrated means for interlocking connection with another piece (1, 2, 60 to 62) for connection, for its attachment to the post, and in that it comprises an area (18,54) of less resistance to promote its controlled deformation in the event of impact.
EP00948077A 1999-07-06 2000-07-04 Road safety device, component parts and method for making same Withdrawn EP1196660A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9908980A FR2796090B1 (en) 1999-07-06 1999-07-06 ROAD SAFETY DEVICE, PARTICULARLY FOR MOTORCYCLISTS
FR9908980 1999-07-06
PCT/FR2000/001900 WO2001002649A1 (en) 1999-07-06 2000-07-04 Road safety device, component parts and method for making same

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EP1196660A1 true EP1196660A1 (en) 2002-04-17

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AU (1) AU6165400A (en)
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ITMI20040005U1 (en) * 2004-01-14 2004-04-14 Snoline Spa PROTECTIVE BARRIER FOR MOTORCYCLISTS
ITMI20080780A1 (en) * 2008-04-29 2009-10-30 K Lab S R L PROTECTIVE MEANS OF CONTINUOUS ABSORPTION TO BE APPLIED TO A ROAD OR MOTORWAY BARRIER TO PROTECT A BIKER IN CASE OF IMPACT AGAINST THE SAME BARRIER
IT1398525B1 (en) 2010-02-24 2013-03-01 Innovazione E Ricerca Per Infrastrutture Sostenibili S R L In Sigla Iris S R L PROTECTIVE MEANS OF CONTINUOUS ABSORPTION TO BE APPLIED TO A ROAD OR MOTORWAY BARRIER TO PROTECT A BIKER IN CASE OF IMPACT AGAINST THE SAME BARRIER.
NZ590876A (en) * 2011-12-23 2012-09-28 Axip Ltd A coupling arrangment for guardrails which upon telescopic slinding of the rails causes an increasing clamping force between them
CN112982238B (en) * 2021-01-26 2022-01-28 温州职业技术学院 Install guardrail fast with shimmer illumination function

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WO2001002649A1 (en) 2001-01-11
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AU6165400A (en) 2001-01-22

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