EP1627201B1 - Improved anti-explosion screen - Google Patents
Improved anti-explosion screen Download PDFInfo
- Publication number
- EP1627201B1 EP1627201B1 EP04742712.5A EP04742712A EP1627201B1 EP 1627201 B1 EP1627201 B1 EP 1627201B1 EP 04742712 A EP04742712 A EP 04742712A EP 1627201 B1 EP1627201 B1 EP 1627201B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- panel
- screen
- connectors
- explosion
- points
- 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.)
- Expired - Lifetime
Links
- 238000004880 explosion Methods 0.000 title claims description 44
- 239000004744 fabric Substances 0.000 claims description 22
- 238000004873 anchoring Methods 0.000 claims description 20
- 239000006096 absorbing agent Substances 0.000 claims description 7
- 238000010521 absorption reaction Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 11
- 206010041662 Splinter Diseases 0.000 description 5
- 239000002360 explosive Substances 0.000 description 5
- 230000001681 protective effect Effects 0.000 description 5
- 230000000452 restraining effect Effects 0.000 description 5
- 239000012634 fragment Substances 0.000 description 3
- 230000000717 retained effect Effects 0.000 description 3
- 230000009172 bursting Effects 0.000 description 2
- 208000018747 cerebellar ataxia with neuropathy and bilateral vestibular areflexia syndrome Diseases 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 206010010144 Completed suicide Diseases 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 229920003235 aromatic polyamide Polymers 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D5/00—Safety arrangements
- F42D5/04—Rendering explosive charges harmless, e.g. destroying ammunition; Rendering detonation of explosive charges harmless
- F42D5/045—Detonation-wave absorbing or damping means
Definitions
- the present invention relates to an explosion protection screen capable of attenuating the damage caused by the blast effect released by an explosion as well as the fragments projected during the explosion, that is to say the "fragmentation ".
- a cover placed on the explosive device may be lifted by the explosion, which limits the protection provided by the cover.
- a screen may be blown by the explosion and may not mitigate the effect of blast satisfactorily, and not prevent the spread of shards.
- An object of the invention is to provide a screen device providing improved protection by absorbing the energy of a blast effect of an explosion and stopping fragments, and which can also be discreet and deploy automatically when an explosion.
- such an explosion-proof screen device comprises at least one panel of fire-resistant material and a set of retaining links connected on one side to the panel at fixing points and intended to be fixed on the side opposed to one or more remote anchor points located on one side of the screen, the lengths of the retaining links being adapted according to the positions of the anchor points and the corresponding fixing points to maintain the screen in erect position when the The screen undergoes a substantially horizontal pushing force away from the anchor points, and that the links are strained.
- the device comprises for a panel at least three retaining links connected to the panel at attachment points which are not aligned.
- a panel will be held to rotate vertically and horizontally during the explosion.
- Low fixing points may be provided, for example on a lower edge of a panel and high fixing points, for example on an upper edge of a panel.
- the links are flexible links, such as straps or cables. This allows, for more discretion, to have the screen in position with the flexible links folded in a discrete manner to avoid attracting attention, flexible links resting for example on the ground. In the event of an explosion in front of the screen on the side of the anchorage points, the screen will be pushed back until the links are tight which will then keep it in erected position.
- the flexible connections allow to provide anchoring points arranged at ground level, without a flexible connection connected to a fixing point located in height on a panel is initially in a quasi-tensioned position for more discretion.
- the flexible links can be provided with energy absorbers allowing an extension of the connection when it is subjected to a tensile force, together with an energy absorption.
- a screen includes a plurality of panels hinged together. This allows a deployment of the screen, under the effect of the blast of an explosion, to increase a protective surface.
- the screen device comprises at least one panel in the form of a rigid frame and a splinter cloth fabric disposed across the frame.
- cloth fabric burst screen means a piece of fabric of the type used for bulletproof vests and having a high resistance and a large energy absorption capacity to prevent tearing during an explosion.
- This type of fabric generally comprises aramid type fibers.
- the splinter cloth fabric is secured to the frame by means of a set of webbing crisscrossed across the frame.
- the interlocking straps allow a strong fixation of the canvas on the frame.
- the interlocking straps can be provided with energy absorbers.
- a rigid frame is preferably provided with feet for holding the screen in a standing position when the flexible links are not tensioned.
- the legs of the frame can be provided with wheels to facilitate a retreat of the screen by avoiding a tilting.
- a screen in one embodiment, includes a central bumper fabric secured by two opposite vertical edges between two uprights of two rigid frames of two side panels.
- the central bumper fabric can be initially folded between the side panels to deploy in the event of an explosion to increase a protective surface.
- a screen device 1 comprises vertical splinter panels, here three in number, including a central panel 2, a first side panel 3 and a second side panel 4.
- the screen device 1 comprises a rigid articulated frame, for example of the tubular metal type, comprising vertical uprights 5, here four in number and arranged side by side, two adjacent uprights 5 being connected on the one hand at their ends. upper by an upper cross member 6 and on the other hand at their lower ends by a lower cross member 7, to form a rigid frame consisting of two adjacent posts 5 two cross members 6, 7.
- a rigid articulated frame for example of the tubular metal type, comprising vertical uprights 5, here four in number and arranged side by side, two adjacent uprights 5 being connected on the one hand at their ends. upper by an upper cross member 6 and on the other hand at their lower ends by a lower cross member 7, to form a rigid frame consisting of two adjacent posts 5 two cross members 6, 7.
- three adjacent rigid frames are thus formed to the using the four uprights 5, the amounts 5 between two adjacent frames being used in common for these two adjacent frames.
- the fastenings of the lower crosspieces 7 and upper 6 with the uprights 5 are articulated along the vertical axis of the uprights 5 to allow rotation along a vertical axis of a rigid frame relative to the adjacent rigid frame, as indicated by the arrow P ( figure 3 ) to modify a screen arrangement.
- Each panel 2, 3, 4 is composed of a rigid frame as described and a cloth 8 in splintered fabric disposed across the rigid frame.
- Each fabric 8 is stretched in the corresponding frame by being held by vertical and horizontal straps 9 stretched between the uprights 5 and the crosspieces 6, 7 forming the frame, being intertwined.
- Coverings can be provided between the canvases 8 of the adjacent frames for better protection. It will also be possible to provide a single fabric 8 arranged obstructing all the frames simultaneously, the fabric being nevertheless fixed on the intermediate uprights to allow adequate folding of the screen.
- the panels have a low thickness, which contributes to the discretion of the device.
- the screen device 1 further comprises retaining links 11, here in the form of straps or cables, fixed on one side to fixing points 12, 13 provided on the panels 2, 3, 4, and on the other side on anchor points 14, 15, here two in number.
- the anchoring points 14, 15 are provided in the form of rings fixed firmly in the ground.
- High fixing points 12 are provided in the form of fastening lugs integral with the upper ends of the uprights 5, and low fixing points 13 are provided in the form of fastening lugs integral with the lower ends of the uprights 5.
- Each of the attachment points 12, 13 of the first side panel 3 and the central panel 2 is connected to a first anchor point 14 by a retaining connection 11, and each of the attachment points 12, 13 of the second side panel 4 and the center panel 2 is connected to a second anchoring point 15.
- the fixing points of the central panel 2 are each connected simultaneously to the two anchor points 14, 15. There are therefore a total of twelve retaining links 11.
- the arrangement of the restraining links between the uprights 5 and the anchor points may be varied to provide more or fewer restraining links depending on the force that can be supported by each of the restraining links.
- the lengths of restraining links will be adapted so that the panels 2, 3, 4 of the screen are held in erect position when the screen is pushed in a direction opposite to the anchoring points 14, 15 by the effect blast of an explosion.
- the anchoring points 14, 15 are located on the ground, but it would also be possible to provide some anchoring points in height when possible, for example in a hall of a building.
- attachment points are located on the ground and retaining links are provided, as will be better understood in the study of Figures 4 to 6 , where the numerical references to the elements similar to those of the previous figures have been repeated.
- a high flexible retaining link 11a is fixed on one side to an anchor point 14 located on the ground and on the other side to a high attachment point 12 located at an upper end of a screen panel 2 seen from the side.
- a soft low retaining link 11b is attached on one side to the anchor point 14 and on the other side to a lower attachment point 13 located at a lower end of the panel 2.
- the high link 11a is longer than the low link 11b.
- the panel 2 is located at a distance from the anchoring point 14 less than the length of the low link 11b.
- the panel 2 is sufficiently close to the anchoring point 14 so that the high link 11b is not stretched and is arranged vertically along the panel 2 and horizontally on the ground to the anchoring point 14.
- the low link 11b and the high link 11a are not strained. An intermediate portion of the high 11a and low 11b connections is folded carefully and discreetly at the foot of the panel 2.
- the panel 2 moves back to reach the position illustrated by the figure 5 wherein the high and low flexible links 11a, 11b are stretched.
- the length of the connections is adapted so that the panel 2 subjected to the blast effect is maintained erected substantially vertically, in order to prevent the panel 2 from going to bed because it would no longer protect the explosion on the opposite side from the explosion. .
- the lengths of the high and low links 11a, 11b must substantially respect, with the vertical distance between the upper fixing points and the lower fixing points, the relationship of Pythagoras right triangles.
- the panel initially close to the anchor point 14 for a discrete disposition of the high link 11a, backs out over a distance that depends on the relative length of the high and low links 11a, 11b.
- the high link has a length of 3.6 m.
- the panel can be placed initially at approximately 1.6 m (3.6 m - 2 m) of anchor point 14. In the event of an explosion, the sign will retreat by 1.4 m.
- the screen 1 with three panels 2, 3, 4, shown in dashed lines, is arranged in a position where the side panels 3, 4 are slightly folded. Following the explosion at the point of explosion 16, the screen moves back to a second position, represented in solid lines. Given the length of the flexible retaining links initially provided, the screen 1 backs up opening.
- the panels 2, 3, 4 are each held by two flexible links with fixing points offset horizontally to prevent rotation along a vertical axis of the panel so that it is held in position facing the explosion for better protection.
- each panel will preferably be retained by at least three flexible links with fixing points arranged on the triangle panel, that is to say that they are not aligned.
- a screen 1 is provided with five articulated panels. In the initial position, for more discretion, the screen 1 is arranged so that the central panels of the screen 1 are folded over each other.
- a screen 1 comprises two side panels 3, 4 independent, and a central web 17 disposed between the panels 3, 4 being connected by its vertical edges opposite the panels.
- the central fabric 17 is folded to have a length greater than the distance between the panels 3, 4 in the initial position.
- the panels 3, 4 and the central fabric are connected by flexible retaining links 11 to one of the anchoring points 14.
- the panels are separated by the blast of the explosion and the central fabric 17 unfolds and inflates by adopting a profile that depends on the lengths chosen for the retaining links 11.
- a set of screen devices according to one aspect of the invention are implemented in front of a waypoint 18 which can be an entrance to a building.
- a first screen 20 is arranged opposite the entrance, and second and third screens 21, 22 are arranged in a staggered recess. If a person carrying a bomb passes the waypoint 18 and detonates his bomb at the point of explosion 23 that it has reached, the first screen protects the area A located behind the first screen 20, the second and third screen 21 , 22 offers additional protection, especially if the terrorist, more advanced, is shifted laterally relative to the first screen.
- the screens 20, 21, 22 can be discreetly placed in public places by integrating the decor without shock by their presence. This makes it possible not to arouse the attention of a terrorist or not to worry the public.
- the screens can be covered with decorative elements.
- the screens are arranged as a precaution before an explosion and thus protect effectively in case of terrorist attack.
- the screens will be maintained in erect position, thus protecting the public located behind the screens.
- the panels, consisting of frame and splinter screens are light, which facilitates the arrangement and installation of the screens.
- the screens retained by flexible links from a limited number of ground anchors allows easy and discreet installation of the screens.
- the straps for holding the canvases on the frames ( figure 1 ) and the retaining connections are equipped with an absorber.
- a strap 24 may have an intermediate portion 25 consisting of three sections of similar length, a central section 25a being folded on a first lateral section 25b, the other lateral section 25c being itself folded on the central section 25a on the opposite side to the first lateral section 25b.
- the intermediate portion 25 is folded back on itself, forming a zone of triple thickness, the sections 25a, 25b, 25c being thus held by any suitable means, here a seam 26. This gives a portion forming reserve of length for the strap 24 and held by seams 26.
- the strap 24 which is a retaining strap or a strap for holding a bursting cloth, undergoes a tension force symbolized by arrows F2. Yes the effort is sufficient, the seams 26 are torn off by absorbing energy and the strap 24 relaxes. This allows a better absorption of the energy produced by a blast effect on a panel, at the level of straps for holding a bursting cloth and / or at the level of retaining straps of the panel arranged between the panel and a point hooking.
- One or more absorption zones can be provided on a strap.
- a seam 26 of the intermediate portion 25 less resistant than the end seam may be provided for the seam 26 of the intermediate portion 25 to yield first and fulfill its role of absorber. energy.
- an explosion-proof screen device allowing in case of explosion to maintain the screen in erect position to prevent the screen is coated by the blast of the explosion.
- the screen can be installed easily and quickly, and can fit into a decor without attracting attention.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Overhead Projectors And Projection Screens (AREA)
- Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
- Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
Description
La présente invention concerne un paravent de protection contre les explosions, susceptible d'atténuer les dégâts provoqués par l'effet de souffle dégagé par une explosion ainsi que les éclats projetés lors de l'explosion, c'est-à-dire la « fragmentation ».The present invention relates to an explosion protection screen capable of attenuating the damage caused by the blast effect released by an explosion as well as the fragments projected during the explosion, that is to say the "fragmentation ".
Un tel dispositif de paravent anti-explosion est connu du document
Lorsqu'un objet suspect est découvert dans un lieu public et que l'on soupçonne qu'il s'agit d'un engin explosif, des mesures sont généralement mises en oeuvre pour évacuer le public, et pour isoler l'engin explosif en vue de son évacuation ou de son désamorçage sur place.When a suspicious object is discovered in a public place and is suspected to be an explosive device, measures are generally taken to evacuate the public, and to isolate the explosive device in order to evacuation or defusing on the spot.
Pour isoler l'engin explosif, on peut utiliser des couvertures ou des paravents constitués de matériaux pare-éclats résistants au passage d'éclats projetés par l'explosion.To isolate the explosive device, it is possible to use blankets or screens made of splinter-proof materials resistant to the passage of fragments projected by the explosion.
Toutefois, ces dispositifs n'offre pas une protection satisfaisante. Une couverture posée sur l'engin explosif risque d'être soulevée par l'explosion, ce qui limite la protection conférée par la couverture. Un paravent risque d'être soufflé par l'explosion et risque alors de ne pas atténuer de façon satisfaisante l'effet de souffle, et de ne pas empêcher la propagation d'éclats.However, these devices do not provide satisfactory protection. A cover placed on the explosive device may be lifted by the explosion, which limits the protection provided by the cover. A screen may be blown by the explosion and may not mitigate the effect of blast satisfactorily, and not prevent the spread of shards.
Par ailleurs, la mise en oeuvre de ces dispositifs nécessite préalablement de détecter l'engin explosif, puis de disposer ces éléments de protection, ce qui nécessite un certain temps compte tenu des précautions qui doivent être prises. Or, lors d'attaques terroristes menées par surprise, par exemple lorsqu'un kamikaze déclenche dans un lieu public une bombe qu'il porte, on ne dispose pas du temps nécessaire pour déployer ces dispositifs de protection.Furthermore, the implementation of these devices requires the prior detection of the explosive device, then dispose of these protective elements, which requires a certain time given the precautions that must be taken. However, during surprise terrorist attacks, for example when a suicide bomber unleashes a bomb in a public place, there is not enough time to deploy these protective devices.
Un but de l'invention est de proposer un dispositif de paravent fournissant une protection améliorée en absorbant l'énergie d'un effet de souffle d'une explosion et en arrêtant des éclats, et qui puisse par ailleurs être discret et se déployer automatiquement lors d'une explosion.An object of the invention is to provide a screen device providing improved protection by absorbing the energy of a blast effect of an explosion and stopping fragments, and which can also be discreet and deploy automatically when an explosion.
Selon la revendication indépendante 1, un tel dispositif de paravent anti-explosion comprend au moins un panneau en matériau pare-éclat et un ensemble de liaisons de retenue reliées d'un côté au panneau en des points de fixation et destinées à être fixées du côté opposé à un ou plusieurs points d'ancrage distants situés d'un côté du paravent, les longueurs des liaisons de retenue étant adaptées en fonction des positions des points d'ancrage et des points de fixation correspondants pour maintenir le paravent en position dressée lorsque le paravent subit un effort sensiblement horizontal de poussée l'éloignant des points d'ancrage, et que les liaisons sont tendues.According to the
De préférence, le dispositif comprend pour un panneau au moins trois liaisons de retenue reliées au panneau en des points de fixation qui ne sont pas alignés. Ainsi, un panneau sera retenu de pivoter verticalement et horizontalement lors de l'explosion. On peut prévoir des points de fixation bas, par exemple sur un bord inférieur d'un panneau et des poins de fixation haut, par exemple sur un bord supérieur d'un panneau.Preferably, the device comprises for a panel at least three retaining links connected to the panel at attachment points which are not aligned. Thus, a panel will be held to rotate vertically and horizontally during the explosion. Low fixing points may be provided, for example on a lower edge of a panel and high fixing points, for example on an upper edge of a panel.
Les liaisons sont des liaisons souples, du type sangles ou câbles. Ceci permet, pour plus de discrétion, de disposer le paravent en position avec les liaisons souples repliées de façon discrète pour éviter d'attirer l'attention, les liaisons souples reposant par exemple sur le sol. En cas d'explosion devant le paravent du côté des points d'ancrage, le paravent sera repoussé jusqu'à tendre les liaisons qui le maintiendront alors en position dressée. Les liaisons souples permettent de prévoir des points d'ancrage disposés au niveau du sol, sans qu'une liaison souple reliée à un point de fixation situé en hauteur sur un panneau ne soit initialement en position quasi-tendue pour plus de discrétion.The links are flexible links, such as straps or cables. This allows, for more discretion, to have the screen in position with the flexible links folded in a discrete manner to avoid attracting attention, flexible links resting for example on the ground. In the event of an explosion in front of the screen on the side of the anchorage points, the screen will be pushed back until the links are tight which will then keep it in erected position. The flexible connections allow to provide anchoring points arranged at ground level, without a flexible connection connected to a fixing point located in height on a panel is initially in a quasi-tensioned position for more discretion.
Les liaisons souples peuvent être munies d'absorbeurs d'énergie permettant une extension de la liaison lorsqu'elle est soumise à un effort de traction, conjointement avec une absorption d'énergie.The flexible links can be provided with energy absorbers allowing an extension of the connection when it is subjected to a tensile force, together with an energy absorption.
Dans un mode de réalisation, un paravent comprend une pluralité de panneaux articulés entre eux. Ceci permet un déploiement du paravent, sous l'effet du souffle d'une explosion, pour augmenter une surface de protection.In one embodiment, a screen includes a plurality of panels hinged together. This allows a deployment of the screen, under the effect of the blast of an explosion, to increase a protective surface.
Dans un mode de réalisation, le dispositif de paravent comprend au moins un panneau sous la forme d'un cadre rigide et d'une toile en tissu pare-éclats disposée en travers du cadre. Par toile en tissu pare-éclat, on entend un pan de tissu du type utilisé pour les gilets pare-balles et présentant une résistance importante ainsi qu'une capacité d'absorption d'énergie importante pour éviter un déchirement lors d'une explosion. Ce type de tissu comprend généralement des fibres du type aramide.In one embodiment, the screen device comprises at least one panel in the form of a rigid frame and a splinter cloth fabric disposed across the frame. By cloth fabric burst screen means a piece of fabric of the type used for bulletproof vests and having a high resistance and a large energy absorption capacity to prevent tearing during an explosion. This type of fabric generally comprises aramid type fibers.
La toile en tissu pare-éclats est, dans un mode de réalisation, fixée sur le cadre par l'intermédiaire d'un ensemble de sangles entrecroisées en travers du cadre. Les sangles entrecroisées permettent une fixation résistante de la toile sur le cadre. Avantageusement, les sangles entrecroisées peuvent être munies d'absorbeurs d'énergie.In one embodiment, the splinter cloth fabric is secured to the frame by means of a set of webbing crisscrossed across the frame. The interlocking straps allow a strong fixation of the canvas on the frame. Advantageously, the interlocking straps can be provided with energy absorbers.
Un cadre rigide est de préférence muni de pieds pour le maintien du paravent en position debout lorsque les liaisons souples ne sont pas tendues. Les pieds du cadre peuvent être munis de roues pour faciliter un recul du paravent en évitant un basculement.A rigid frame is preferably provided with feet for holding the screen in a standing position when the flexible links are not tensioned. The legs of the frame can be provided with wheels to facilitate a retreat of the screen by avoiding a tilting.
Dans un mode de réalisation, un paravent comprend une toile pare-éclat centrale fixée par deux bords verticaux opposés entre deux montants de deux cadres rigides de deux panneaux latéraux. La toile pare-éclat centrale peut être initialement pliée entre les panneaux latéraux afin de se déployer en cas d'explosion pour augmenter une surface de protection.In one embodiment, a screen includes a central bumper fabric secured by two opposite vertical edges between two uprights of two rigid frames of two side panels. The central bumper fabric can be initially folded between the side panels to deploy in the event of an explosion to increase a protective surface.
La présente invention et ses avantages seront mieux compris à l'étude de la description détaillée de modes de réalisation pris à titre d'exemples nullement limitatifs et illustrés par les dessins annexés, sur lesquels :
- la
figure 1 est une vue de face d'un dispositif de paravent à trois panneaux selon un aspect de l'invention ; - la
figure 2 est une vue de côté d'un panneau du dispositif selon lafigure 1 ; - la
figure 3 est une vue de dessus du dispositif selon lafigure 1 ; - la
figure 4 est une vue de côté d'un dispositif selon un aspect de l'invention muni de liaisons de retenue souples avec des points d'ancrage au sol, disposé en situation avant une explosion ; - la
figure 5 est une vue de côté du dispositif selon lafigure 4 déplacé suite à une explosion ; - la
figure 6 est une vue de dessus correspondant à lafigure 5 ; - les
figures 7a et 7b sont des vues schématiques de dessus d'un second mode de réalisation d'un dispositif selon un aspect de l'invention, en position avant et après explosion ; - les
figures 8a et 8b sont des vues similaires auxfigures 6a et 6b du dispositif selon une variante, en position avant et après explosion ; et - la
figure 9 est une vue de dessus schématique d'un groupe de dispositifs selon l'invention agencée devant un point de passage de façon préventive ; - la
figure 10 est une vue de côté d'une liaison souple du type sangle munie d'un absorbeur d'énergie.
- the
figure 1 is a front view of a three-panel screen device according to one aspect of the invention; - the
figure 2 is a side view of a panel of the device according to thefigure 1 ; - the
figure 3 is a top view of the device according to thefigure 1 ; - the
figure 4 is a side view of a device according to one aspect of the invention provided with flexible retaining links with anchoring points on the ground, arranged in a situation before an explosion; - the
figure 5 is a side view of the device according to thefigure 4 moved after an explosion; - the
figure 6 is a top view corresponding to thefigure 5 ; - the
Figures 7a and 7b are schematic views from above of a second embodiment of a device according to one aspect of the invention, in position before and after explosion; - the
Figures 8a and 8b are similar views toFigures 6a and 6b the device according to a variant, in position before and after explosion; and - the
figure 9 is a schematic top view of a group of devices according to the invention arranged in front of a waypoint preventively; - the
figure 10 is a side view of a flexible strap type link provided with an energy absorber.
Sur la
Le dispositif de paravent 1 comprend une armature rigide articulée, par exemple du type tubulaire métallique, comportant des montants verticaux 5, ici au nombre de quatre et disposés côté à côte, deux montants 5 adjacents étant reliés d'une part à leurs extrémités supérieures par une traverse supérieure 6 et d'autre part à leurs extrémités inférieures par une traverse inférieure 7, pour former un cadre rigide constitué par deux montants adjacents 5 deux traverses 6, 7. Ici, trois cadres rigides adjacents sont ainsi formés à l'aide des quatre montants 5, les montants 5 situés entre deux cadres adjacents étant utilisés en commun pour ces deux cadres adjacents. Les fixations des traverses inférieures 7 et supérieures 6 avec les montants 5 sont articulées selon l'axe vertical des montants 5 pour permettre une rotation selon un axe vertical d'un cadre rigide relativement au cadre rigide adjacent, comme indiqué pare la flèche P (
Chaque panneau 2, 3, 4 est composé d'un cadre rigide tel que décrit et une toile 8 en tissu pare-éclats disposée en travers du cadre rigide. Chaque toile 8 est tendue dans le cadre correspondant en étant maintenue par des sangles 9 verticales et horizontales tendue entre les montants 5 et les traverses 6, 7 formant le cadre, en étant entrecroisées.Each
On pourra prévoir des recouvrements entre les toiles 8 des cadres adjacents pour une meilleure protection. On pourra aussi prévoir une unique toile 8 disposé obstruant tous les cadres simultanément, la toile étant néanmoins fixée sur les montants 5 intermédiaires pour permettre le pliage adéquat du paravent.Coverings can be provided between the
Comme on peut mieux le voir sur la
En se référant aux
Des points de fixation haute 12 sont prévus sous la forme de pattes de fixation solidaires des extrémités supérieures des montants 5, et des points de fixation basse 13 sont prévus sous la forme de pattes de fixation solidaires des extrémités inférieures des montants 5.High fixing points 12 are provided in the form of fastening lugs integral with the upper ends of the
Chacun des points de fixation 12, 13 du premier panneau latéral 3 et du panneau central 2 est relié à un premier point d'ancrage 14 par une liaison de retenue 11, et chacun des points de fixation 12, 13 du second panneau latéral 4 et du panneau central 2 est relié à un second point d'ancrage 15. Les points de fixation du panneau central 2 sont donc chacun reliés simultanément aux deux points d'ancrage 14, 15. On dénombre donc au total douze liaisons de retenue 11.Each of the attachment points 12, 13 of the
En variante, on pourrait prévoir un point d'ancrage unique, ou des points d'ancrage plus nombreux. Par exemple, on pourrait prévoir un points d'ancrage associé à chaque montant 5 du paravent. L'agencement des liaisons de retenue entre les montants 5 et les points d'ancrage peuvent être modifiée, pour prévoir plus ou moins de liaisons de retenue selon la force pouvant être supportée par chacune des liaisons de retenue.Alternatively, one could provide a single anchor point, or more anchor points. For example, one could provide an anchor points associated with each
Dans tous les cas, les longueurs de liaisons de retenue seront adaptées pour que les panneaux 2, 3, 4 du paravent soient maintenus en position dressée lorsque le paravent est poussé dans une direction opposée aux points d'ancrage 14, 15 par l'effet de souffle d'une explosion.In any case, the lengths of restraining links will be adapted so that the
Les points d'ancrage 14, 15 sont situés sur le sol, mais on pourrait également prévoir certains points d'ancrage en hauteur lorsque cela est possible, par exemple dans un hall d'un bâtiment.The anchoring points 14, 15 are located on the ground, but it would also be possible to provide some anchoring points in height when possible, for example in a hall of a building.
Pour un positionnement discret du paravent, les points d'attache sont situés sur le sol et des liaisons de retenue sont prévues, comme cela sera mieux compris à l'étude des
Sur la
La liaison haute 11a est plus longue que la liaison basse 11b. Initialement, le panneau 2 est situé à une distance du point d'ancrage 14 inférieure à la longueur de la liaison basse 11b. Le panneau 2 est suffisamment proche du point d'ancrage 14 pour que la liaison haute 11b ne soit pas tendue et soit disposée verticalement le long du panneau 2 et horizontalement sur le sol jusqu'au point d'ancrage 14.The
La liaison basse 11b et la liaison haute 11a ne sont pas tendues. Une partie intermédiaire des liaisons haute 11a et basse 11b est repliée soigneusement et discrètement au pied du panneau 2.The
Lorsqu'une explosion se produit à un point d'explosion 16, situé du même côté du paravent que le point d'ancrage 14, un effet de souffle se propage dans toutes les directions, comme illustré par les flèches f. L'effet de souffle, atteignant le panneau 2, développe des efforts. La résultante de ces efforts sur le panneau, illustrée par la flèche F, est principalement horizontale. Le paravent dans son ensemble, et le panneau 2 en particulier est donc poussé du côté opposé au point d'ancrage 14.When an explosion occurs at an
Le panneau 2 recule jusqu'à atteindre la position illustrée par la
Dans le cas où le point de fixation haute 12, le point de fixation basse 13 et le point d'ancrage 14 sont situés dans un même plan vertical, les longueurs des liaisons hautes et basse 11a, 11b doivent sensiblement respecter, avec la distance verticale entre les points de fixation haute et les points de fixation basse, la relation de Pythagore des triangles rectangles.In the case where the
Bien entendu, avec d'autres dispositions des points d'ancrage et des points de fixation, les longueurs liaisons devront respecter des relations différentes.Of course, with other provisions of the anchor points and attachment points, the link lengths must respect different relationships.
Lors d'une explosion, le panneau initialement proche du point d'ancrage 14 pour une disposition discrète de la liaison haute 11a, recule sur une distance qui dépend de la longueur relative des liaisons haute et basse 11a, 11b.During an explosion, the panel initially close to the
A titre d'exemple, dans le cas du panneau de la
On pourrait prévoir que le panneau 2 soumis à une explosion puisse s'incliner en arrière de quelques degrés relativement à la position verticale (par exemple 0 à 5°), pour dévier un effet de souffle.One could predict that the
Sur la
On remarquera que les panneaux 2, 3, 4 sont chacun maintenus par deux liaison souples avec des points de fixation décalés horizontalement pour éviter une rotation selon un axe vertical du panneau pour qu'il soit maintenu en position face à l'explosion pour une meilleure protection.It will be noted that the
De façon générale, chaque panneau sera de préférence retenu par au moins trois liaisons souples avec des points de fixation disposés sur le panneau en triangle, c'est-à-dire qu'ils ne sont pas alignés.In general, each panel will preferably be retained by at least three flexible links with fixing points arranged on the triangle panel, that is to say that they are not aligned.
Sur la
Comme illustré sur la
Sur la
Comme illustré sur la
Sur la
Un premier paravent 20 est disposé en regard de l'entrée, et des second et troisième paravents 21, 22 sont disposés en retrait en quinconce. Si une personne portant une bombe passe le point de passage 18 et fait exploser sa bombe au point d'explosion 23 qu'elle a atteint, le premier paravent protège la zone A située en arrière du premier paravent 20, les second et troisième paravent 21, 22 offrant une protection supplémentaire, notamment si le terroriste, plus avancé, est décalé latéralement relativement au premier paravent.A
Les paravents 20, 21, 22 peuvent être disposés discrètement dans des lieux publics en s'intégrant au décor sans choquer par leur présence. Ceci permet de ne pas éveiller l'attention d'un terroriste ou de ne pas inquiéter le public. Les paravents peuvent être recouvert d'éléments de décors. Les paravents sont disposés par précaution avant une explosion et permettent donc de protéger efficacement en cas d'attentat terroriste. Par, ailleurs, grâce aux liaisons de retenue, les paravents seront maintenus en position dressée, protégeant ainsi le public situé en arrière des paravents. Les panneaux, constitués de cadre et de toiles pare-éclats sont légers, ce qui facilite la disposition et l'installation des paravents. De plus, les paravents retenus par des liaisons souples à partir d'un nombre limité d'ancrages au sol permet une installation facile et discrète des paravents.The
Pour améliorer la tenue des paravents, on peut prévoir que les sangles de maintien des toiles sur les cadres (
Pour ce faire, et comme on peut le voir sur la
Lorsqu'un effort est exercé sur un panneau, la sangle 24, qui est une sangle de retenue ou une sangle de maintien d'une toile pare-éclat, subit un effort de tension symbolisé par des flèches F2. Si l'effort est suffisant, les coutures 26 sont arrachées en absorbant de l'énergie et la sangle 24 se détend. Ceci permet une meilleure absorption de l'énergie produit par un effet de souffle sur un panneau, au niveau de sangles de maintien d'une toile pare-éclat et/ou au niveau de sangles de retenue du panneau disposées entre le panneau et un point d'accrochage. On pourra prévoir, sur une sangle, une ou plusieurs zones d'absorption.When a force is exerted on a panel, the
Si la sangle est fixée à ses extrémités par couture, on pourra prévoir une couture 26 de la portion intermédiaire 25 moins résistante que la couture d'extrémité pour que la couture 26 de la portion intermédiaire 25 cède en premier et remplisse son rôle d'absorbeur d'énergie.If the strap is attached at its ends by stitching, a
Dans le cas de liaisons de retenue souples prévues sous la forme de câbles métalliques, on pourra prévoir par exemple des portions munies de ressorts intermédiaire pour absorber de l'énergie.In the case of flexible retaining connections provided in the form of metal cables, it is possible to provide, for example, portions provided with intermediate springs for absorbing energy.
Grâce à l'invention, on obtient finalement un dispositif de paravent anti-explosion permettant en cas d'explosion un maintien du paravent en position dressée pour éviter que le paravent ne soit couché par le souffle de l'explosion. Le paravent peut être installé facilement et rapidement, et peut s'intégrer dans un décor sans attirer l'attention.Thanks to the invention, we finally obtain an explosion-proof screen device allowing in case of explosion to maintain the screen in erect position to prevent the screen is coated by the blast of the explosion. The screen can be installed easily and quickly, and can fit into a decor without attracting attention.
Claims (9)
- Anti-explosion screen device comprising at least one panel (2, 3, 4) made of blast-shielding material and a set of holding connectors (11) which are flexible and connected on one side to the panel at fixing points (12, 13) and which are designed to be fixed on the opposing side to one or more anchoring points (14, 15), characterized in that the anchoring point (14, 15) or the anchoring points (14, 15) are located on the ground, at a distance and located on one side of the screen, the lengths of the holding connectors (11) being adapted according to the positions of the anchoring points and the corresponding fixing points in order to maintain the screen in an upright position when the screen is subjected to a substantially horizontal thrust force moving it away from the anchoring points and the connectors are tensioned, the panel being capable of moving back from an initial position in the vicinity of the anchoring point in which the connectors are folded, to a position in which the panel is moved away from the anchoring points and the connectors are tensioned under the action of said thrust force.
- Device according to Claim 1, characterized in that it comprises at least three holding connectors (11) for one panel, said holding connectors being connected to the panel at fixing points which are not aligned.
- Device according to any one of Claims 1 or 2, characterized in that the holding connectors are flexible connectors of the strap or cable type.
- Device according to Claim 3, characterized in that the flexible connectors are provided with energy absorbers (25, 26) which permit an extension of the connector when it is subjected to a tractive force, in addition to an absorption of energy.
- Device according to any one of the preceding claims, characterized in that it comprises a plurality of panels which are articulated to one another.
- Device according to any one of the preceding claims, characterized in that it comprises at least one panel in the form of a rigid frame (5, 6, 7) and a sheet made of blast-shielding fabric (8) arranged across the frame.
- Device according to Claim 6, characterized in that a sheet made of blast-shielding fabric (8) is fixed to a frame by means of a set of straps (9) which are interlaced across the frame.
- Device according to Claim 7, characterized in that the interlaced straps are provided with energy absorbers (25, 26).
- Device according to any one of the preceding claims, characterized in that it comprises a central blast-shielding sheet (16) which is fixed by two opposing vertical edges between two uprights of two rigid frames of two lateral panels (3, 4).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0306335A FR2855606B1 (en) | 2003-05-26 | 2003-05-26 | IMPROVED EXPLOSION PROTECTION PARAVENT DEVICE |
PCT/FR2004/001157 WO2004106843A2 (en) | 2003-05-26 | 2004-05-12 | Anti-explosion screen |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1627201A2 EP1627201A2 (en) | 2006-02-22 |
EP1627201B1 true EP1627201B1 (en) | 2016-12-28 |
Family
ID=33427432
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04742712.5A Expired - Lifetime EP1627201B1 (en) | 2003-05-26 | 2004-05-12 | Improved anti-explosion screen |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1627201B1 (en) |
FR (1) | FR2855606B1 (en) |
HU (1) | HUE033603T2 (en) |
WO (1) | WO2004106843A2 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3083856B1 (en) | 2018-07-11 | 2020-07-24 | Sema | ANTI-BLAST, ANTI-FRAGMENT, ANTI-BALL, ANTI-RICOCHET AND ANTI-VEHICLE PROTECTION DEVICE, BIFACE |
CN113561881B (en) * | 2021-07-29 | 2022-05-03 | 山东非金属材料研究所 | Trailer type explosion-proof device, system and method |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE9308788U1 (en) * | 1993-06-14 | 1993-08-12 | Jita-Pipe Oy, Savonlinna | Stretching seat belt |
WO2002047764A1 (en) * | 2000-12-13 | 2002-06-20 | Grzegorz Laszkiewicz | Shock absorber |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH211512A (en) * | 1939-06-07 | 1940-09-30 | Vevey Atel Const Mec | Bulletproof. |
DE1169105B (en) * | 1960-03-31 | 1964-04-30 | Kurt Seifert | Sound absorbing wall filled with liquid |
FR2607241B1 (en) * | 1986-11-25 | 1989-03-24 | Ferrari Tissus Tech | DEVICE FOR PROVIDING PROTECTION FOR PERSONS AGAINST EXPLOSION OF EXPLOSIVE DEVICES OR MATERIALS |
JP2822423B2 (en) * | 1989-02-16 | 1998-11-11 | 東洋紡績株式会社 | Blasting work shielding sheet |
SE524809C2 (en) * | 2000-03-20 | 2004-10-05 | Yngve Zettergren | Protective device used for defusing explosive devices, comprises woven mat suspended from support arms |
CA2334086A1 (en) * | 2001-02-02 | 2002-08-02 | Karl Euler | Portable bullet resistant screen |
-
2003
- 2003-05-26 FR FR0306335A patent/FR2855606B1/en not_active Expired - Lifetime
-
2004
- 2004-05-12 EP EP04742712.5A patent/EP1627201B1/en not_active Expired - Lifetime
- 2004-05-12 WO PCT/FR2004/001157 patent/WO2004106843A2/en active Application Filing
- 2004-05-12 HU HUE04742712A patent/HUE033603T2/en unknown
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE9308788U1 (en) * | 1993-06-14 | 1993-08-12 | Jita-Pipe Oy, Savonlinna | Stretching seat belt |
WO2002047764A1 (en) * | 2000-12-13 | 2002-06-20 | Grzegorz Laszkiewicz | Shock absorber |
Also Published As
Publication number | Publication date |
---|---|
WO2004106843A2 (en) | 2004-12-09 |
EP1627201A2 (en) | 2006-02-22 |
HUE033603T2 (en) | 2017-12-28 |
FR2855606B1 (en) | 2006-07-28 |
WO2004106843A3 (en) | 2005-02-03 |
FR2855606A1 (en) | 2004-12-03 |
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