EP0407274A1 - Bridging system enabling vehicles to bridge gaps - Google Patents

Bridging system enabling vehicles to bridge gaps Download PDF

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Publication number
EP0407274A1
EP0407274A1 EP90401873A EP90401873A EP0407274A1 EP 0407274 A1 EP0407274 A1 EP 0407274A1 EP 90401873 A EP90401873 A EP 90401873A EP 90401873 A EP90401873 A EP 90401873A EP 0407274 A1 EP0407274 A1 EP 0407274A1
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EP
European Patent Office
Prior art keywords
spout
span
locking
supporting structure
folded
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.)
Granted
Application number
EP90401873A
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German (de)
French (fr)
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EP0407274B1 (en
Inventor
Henri Michel Maurice Aubert
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.)
CNIM Groupe SA
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Constructions Industrielles de la Mediterrane CNIM SA
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Application filed by Constructions Industrielles de la Mediterrane CNIM SA filed Critical Constructions Industrielles de la Mediterrane CNIM SA
Priority to AT90401873T priority Critical patent/ATE87683T1/en
Publication of EP0407274A1 publication Critical patent/EP0407274A1/en
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D15/00—Movable or portable bridges; Floating bridges
    • E01D15/12—Portable or sectional bridges
    • E01D15/133—Portable or sectional bridges built-up from readily separable standardised sections or elements, e.g. Bailey bridges
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D15/00—Movable or portable bridges; Floating bridges
    • E01D15/12—Portable or sectional bridges
    • E01D15/124—Folding or telescopic bridges; Bridges built up from folding or telescopic sections

Definitions

  • the present invention relates to a bridging system intended in particular to allow military vehicles to cross breaches in particular.
  • the bridging systems used until now include a short span monolithic span for crossing a relatively small breach or a larger span monolithic span for crossing relatively large breaches.
  • the object of the present invention is to eliminate the above drawback by proposing a bridging system intended in particular to allow military vehicles to cross in particular breaches and characterized in that it comprises at least two identical spans which can be rigidly coupled end to end, each span comprising at least one resistant bearing structure with a rolling track in the upper part; two spouts mounted articulated respectively at the two ends of the support structure around a transverse articulation axis so that each spout occupies either a folded or folded position on the support structure, or a deployed position in extension of the support structure at which the spout is rigidly fixed by a locking device; a span, when used to cover a breach, having its two end spouts deployed forming an access spout rigidly fixed to the support structure and bearing respectively on the two opposite edges of the breach.
  • the device for locking each spout to the supporting structure comprises at least one latch consisting of first and second male and female means respectively integral with the spout and the supporting structure and located substantially at the same distance from on either side of the horizontal plane containing the axis of articulation relative to the support structure so that the first means can be locked in the second means in the deployed position of the spout.
  • two spans are rigidly coupled end to end, at their respective front faces each defined by a bent folded down on the corresponding carrying structure, by two locking devices integral respectively with the two spans at their ends respective, each locking device being constituted by the aforementioned locking device with at least one lock, the first and second means of the locking of the locking device at the end of one of the two spans engaging respectively with the second and first means of the lock of the locking device at the end of the other span when the two spans are coupled.
  • the first and second means of the latch at one end of a span are secured respectively to a spout and the support structure and the first and second means of the latch at the opposite end of the span are respectively secured to the support structure and on the other beak.
  • the first means of a lock is a transverse locking axis and the second means of this lock is a locking hook, the axis and the locking hook projecting on the same side of the corresponding front face of a span.
  • each span comprises at one of its ends a positioning foot and at its opposite end a positioning opening, the positioning foot of one span engaging in the positioning opening of another span when of the coupling of the two spans for their mutual positioning, the assembly foot-opening of positioning taking up the shearing forces resulting from the passage of vehicles on the tracks of the two spans coupled.
  • each spout has a general pyramid shape with rectangular cross section, two opposite faces of which are intended to serve as rolling tracks respectively in the folded and deployed positions of the spout which is articulated around the articulation axis mentioned above by a transverse side of the rectangular base of the spout.
  • each spout comprises two side walls forming wheel guides in the folded position of the spout on the support structure and retractable in the deployed position of the spout.
  • Each side wall forming a wheel guide slides freely relatively parallel to the corresponding side face of the pyramid spout so as to occupy the retracted position when the spout is deployed and a fixed service position when the spout is folded down on the supporting structure.
  • each aforementioned side wall is supported by gravity on an underlying side wall plug secured to the support structure and forming wheel guide in the deployed position of the spout.
  • the reference 1 designates a span according to the invention intended for crossing a breach of relatively small width.
  • the span 1 comprises two identical resistant load-bearing structures 2 extending longitudinally and interconnected by several rigid transverse link arms 3, only one of which is shown, and secured to each load-bearing structure 2 for example by welding.
  • Each support structure 2 comprises a lower part 2a forming a sole to which are fixed uprights 2b supporting an upper part forming a running track consisting of a horizontal central part 2c and two end portions 2d secured respectively to the two ends of the central portion 2c by extending the latter downwardly.
  • each support structure 2 is produced from a mechanically welded metal frame, the central parts 2c and extremes 2d forming a rolling track being formed from two parallel plates with triangulation of reinforcement between them . In order not to overload the figures, only one extreme part 2d has been shown.
  • Two identical spouts 4 are mounted articulated respectively at the two ends of a support structure 2 around a transverse articulation axis 5 so that each spout 4 occupies either a folded or folded position on the corresponding end portion 2d of the support structure 2 as shown in FIG. 4, that is to say a deployed position as an extension of the support structure 2 to which the spout 4 is rigidly fixed by a locking device 6 as shown in FIG. 5.
  • Each spout 4 has a general pyramid shape with a rectangular cross section, two opposite faces 4a and 4b of which are intended to serve as a rolling track respectively in the folded and deployed positions of the spout which is articulated around the axis of articulation 5 by a transverse side 4c of the rectangular base of the spout 4.
  • the face 4a of the spout 4 pr substantially extends horizontally the raceway of the central part 2c and, in the deployed position of the spout 4, the face 4b thereof extends the raceway of the end part 2d.
  • the transverse articulation axis 5 is in the form of an articulation hinge consisting of several spaced parts in the form of a yoke 7 with the two parallel branches 7a of each part 7 joined by fixing screws 8 at the end of the part extreme 2d of the structure 2.
  • a central part 7b disposed between two branches 7a of a part forming a yoke 7 is secured to the transverse side 4c of the spout 4 by fixing screws 9 and pivotally mounted between the two branches 7a around the articulation axis 5 formed by a transverse pivot axis 7c integral with the central part 7b and capable of rotating at its two free ends respectively in two slightly oblong bores 7d machined through the two branches 7a.
  • Support faces 10 are arranged on either side of the transverse axis 5 symmetrically thereto and above and below the yoke portions 7 in the folded position of the spout 4. These support faces 10 are machined on upper or lower parts or blocks 11 secured respectively to the ends of the end part 2d and of the transverse side 4c of the spout 4 by fixing screws 12 embedded in the blocks 11 perpendicular to the horizontal plane containing the transverse axis 5 and screwing under the branches 7a of the parts 7 for the lower blocks and on the other branches 7a for the upper blocks 11; square parts 11a coming to bear, once the screws 12 have been tightened, on corresponding shoulders of the ends of the part 2d of the structure 2 and of the transverse side 4c of the spout 4.
  • the blocks 11 are moreover fixed to the ends of the part 2d and on the transverse side 4c by fixing screws 12a, screwing in corresponding tapped holes of these ends perpendicular to the plane of FIG. 2 or of FIG. 3, the holes for the passage of the screws 12a through the blocks 11 bearing the reference 12b.
  • the device for locking a spout deployed 4 to the support structure 2 comprises several locks 6 each consisting of first 6a and second 6b respectively male and female means integral with the spout 4 and the support structure 2 and located, when a spout occupies the folded position, at the same distance on either side of the horizontal plane containing the articulation axis 5 of the spout relative to the support structure 2.
  • the first means 6a of the latches 6 are constituted by transverse coaxial locking axes integral with one end of a support structure 2 and spouts 4 assembly, on the upper transverse side 4d of a spout 4 opposite the lower transverse side 4c of this spout considering the spout 4 in the folded position and, at the opposite end of this assembly, of the lower part forming the sole 2a of the support structure 2.
  • the transverse axes 6a are housed respectively in longitudinal openings in form e of U 13 defined in the transverse side 4d of the spout 4 so that the axes 6a protrude from the front face 4e of the spout 4 defining the rectangular base thereof or in the front face 2a1 of the part 2a.
  • the second means of the locks 6 are constituted by aligned locking hooks 6b secured to the end of a carrier structure 2 - spouts 4 assembly, of the lower part forming sole 2a of the structure 2 and, at the opposite end of this assembly, on the upper transverse side 4d of the associated spout 4.
  • Each hook 6b is pivotally mounted in a longitudinal U-shaped opening 14 forming a yoke around an axis transverse 14a between an unlocked position and a locked position. As shown, for four locking hooks 6b with four locking pins 6a, these hooks are operated two by two respectively by two lateral levers, only the two levers 15 associated with the lower hooks 6b at the end of a support structure assembly 2 and spout 4 being shown.
  • Each lever 15 has its end opposite to the operating handle integral with the pivot axis 14a passing through two recesses forming yokes 14 while being secured to the two hooks 6b and is also integral with an intermediate portion between the operating handle and the end connected to the axis 14a, by a connecting bar 16 simultaneously driving the two hooks 6b to their unlocking or locking position by operating the lever 15.
  • the connecting bar 16 crosses two tabs 17 secured respectively to two hooks 6b.
  • the yoke portions 14 of the lower hooks 6b project from the front face 2e connecting the end of the part 2d to the corresponding end where the face 2a1 of the lower part 2a of the structure 2 and a same side as the upper transverse axes 6a, the 2nd and 4th faces forming the front face of a span.
  • the upper hooks 6b at the opposite end of the assembly of the supporting structure 2 and the spouts 4 protrude from the front face 4e of the other spout 4 on the same side as the lower transverse axes 6a.
  • One of the locking hooks of a pair of hooks 10b actuated concomitantly by a lever 15 is mechanically connected to a holding device 18 of the pair of hooks 6b either in its locked position or in its unlocked position.
  • This holding device 18 comprises two end brackets 19 and 20 fixed in an articulated manner respectively to the fastening tab 17 of a hook 6b and to a fixing tab 21 secured either to the front face 2e for the lower hooks 6b, or of the front face 4e for the upper hooks 6b.
  • the two stirrups 19 are assembled to one another by a screw 22 screwed into the rear wall connecting the branches of the stirrup 19 and the head 22a of which is held in abutment at the bottom of a part in the form of cup 23 by a pre-stressed compression spring 24 bearing between the rear face of the stirrup 19 and the external annular rim 23a of the cup 23 secured to the rear face of the stirrup 20.
  • the two hooks pivot together around the pivot axis 14a and cause the holding device 18 to pivot by its articulation stirrups in the direction indicated by the arrow F2 to a position where it keeps the two hooks in the unlocked position.
  • This holding device 18 also makes it possible to maintain a pair of hooks 6b in the locking position shown in FIG. 6.
  • the pins 6a and the locking hooks 6b are arranged symmetrically in the longitudinal median plane of a support structure assembly 2 - nozzles 4 containing the axis XX ′ represented in FIG. 2 or in FIG. 3.
  • the two load-bearing structures 2 of a span 1 are arranged symmetrically to a longitudinal median plane containing the axis YY ′ of FIG. 1, so that at the upper locking axes and lower locking hooks on the same side of one end of a support structure assembly 2 - folded out beaks 4 correspond respectively the upper locking hooks and lower locking pins on the same side of the end, opposite the previous end, of the other supporting structure assembly 2 - folded spouts 4.
  • Each support structure 2 - spouts 4 assembly comprises at one of its ends a positioning foot 24 in the shape of a pyramid and integral with the front face 2e of the structure 2 and, at its opposite end, a positioning opening 25 made at across the opposite front face 2e of structure 2.
  • Each positioning foot and each positioning opening 25 are dimensioned in such a way that the two opposite positioning feet 24 respectively of two sets of supporting structures 2 - folded spouts 4 of a span 1 respectively engage in two opposite positioning openings 25 respectively of two sets of supporting structures - folded spouts 4 of another span 1 during the end-to-end coupling of these two spans for their mutual positioning, the assembly thus produced foot 24 - opening 25 for positioning being intended to take up the forces shear resulting from the passage of heavy vehicles on the tracks of the two spans coupled end to end.
  • Each positioning foot 24 and each positioning opening 25 of an assembly are arranged symmetrically to the longitudinal median plane passing through the axis XX ′ and situated respectively between the articulation axis 5 and the locking hooks 6b and between the axis 5 and the locking axes 6a.
  • the front face of one of the folded spouts 4 of each support structure 2 - spouts 4 assembly and located above a positioning foot 24 comprises a opening 26 of dimensions greater than those of the positioning foot 24 so as to allow free passage through the front face 4e of the underlying positioning foot 24 when the spout 4 is deployed.
  • Each central part 2c forming the track of a span 1 comprises two side walls 2f and 2g delimiting the track and forming wheel guide wheels located on the same side of a vehicle traveling on the two parallel tracks of the span 1.
  • the walls forming wheel guide 2f and 2g are joined by welding to the upper part 2c of each support structure 2.
  • the upper part 2d forming the track of each structure 2 comprises two lateral walls delimiting the track and forming wheel guide 2h and 2i.
  • the walls 2h and 2i are joined to the upper part 2d also by welding.
  • Each spout 4 comprises two side walls 4f and 4g delimiting the track 4a of the spout 4 and being able to slide freely parallel to the side faces of the spout, so as to occupy a service position projecting above the track of the spout perpendicular to the latter when the spout is in the folded position, or a retracted or erased position when the spout 4 is deployed in contact with the ground, the two walls 4f and 4g disappearing until they come into the plane of laying the spout .
  • FIG. 12 shows the structure allowing the wall forming the wheel guide 4f to slide with respect to the lateral face of a spout 4 to occupy the service and retracted positions, the structure used for sliding the wall forming the wheel guide 4g being identical.
  • the side wall 4f shown in the service position, has several transverse oblong holes spaced 4h at the level of its crossed upper part respectively by guide pins 4i secured, for example by screwing, to the corresponding lateral face of the spout 4.
  • Each guide pin 4i has a head 4i1 of dimension greater than the width of the corresponding oblong hole 4h.
  • transverse parts spaced in the form of a horizontal U 4j are fixed, for example by welding, to the lateral face of the spout 4 a certain distance below the guide axes 4i.
  • a plate 4k projecting outwardly from the side wall 4f is fixed by welding to the lower end of the wall 4f along the latter and protrudes internally by forming studs respectively engaging in the U-shaped parts 4j.
  • the plate 4k acts as a stop limiting the downward movement of the side wall 4f by considering FIG. 12 by bearing by gravity on the upper end of the side wall forming wheel guide 2h.
  • the guide axis 4i is located at the lower end of the corresponding oblong hole 4h.
  • each side wall forming wheel guide 4f, 4g of the spout comes to rest on the ground so as to move by sliding in the direction indicated by arrow F4 in FIG. 12, thus retracting this wall.
  • Each spout 4 is held in the folded position by lateral locking means 26, only one of which is shown in FIG. 13.
  • the locking means 26 comprises a lever arm 27 mounted pivoting about a transverse central axis 28 integral with the transverse portion connecting the two parts 2c and 2d forming a rolling track for a supporting structure 2.
  • the lever arm 28 ends at the upper level by a locking hook 29 in which a transverse locking axis 30 can engage integral with the vicinity of the free end 41 in the form of a hook of the spout 4.
  • This end 41 in the folded position of the spout 4, rests in a transverse recess of conjugate shape of the junction portion 2k.
  • the end of the lever 27, opposite the locking hook 29, is mechanically connected to a locking and unlocking mechanism (not shown) controlled manually or automatically.
  • a locking and unlocking mechanism may consist of a manual control linkage.
  • the two coaxial locking axes 30 are embedded in their respective respective locking hooks 29.
  • the locking mechanism is actuated so as to pivot the arm 27 around its pivot axis 28 along arrow F5, thereby disengaging the two hooks 29 from the locking pins 30.
  • FIGS. 14A to 14E represent the handling of two spans and their end-to-end assembly in order to form a spans of great span to cover a very wide breach.
  • a transport truck T transports near at least one gap to cover B at least two identical overlapping spans 1, the spouts 4 of which are locked in the folded position.
  • a handling crane machine G takes two spans from the transport truck and places them on the ground so that they are approximately in alignment, with a positioning foot 24 of one end of a span 1 lying approximately opposite a positioning opening 25 at the end of the other span 1, the centering leg 24 is also approximately opposite the positioning opening 25 of the first span 1.
  • the handling crane G moves axially l 'one of the two span 1 towards the other span as indicated by arrow F5 until the two positioning feet 24 engage respectively in the two positioning openings 25 with then locking of the two adjacent ends of the two spans by engagement of the axes of lower and upper locking 6a of a span 1 respectively in the lower and upper locking hooks of the other span and engagement of the lower and upper locking pins 6a of the other span respectively in the lower and upper locking hooks 6b of the first span.
  • the lower and upper hooks of a span before engagement of the positioning feet in their respective positioning openings 25 have been unlocked by operating the corresponding lateral levers 15 which are then operated in the direction of locking the hooks 6b once the positioning feet engaged respectively in the positioning openings 25.
  • the adjacent folded spouts provide very good mechanical resistance, in particular at the junction for assembling the two spans. It should also be noted that to be certain of benefiting from the increase in height and consequently of inertia provided by the folded position of the spouts, the latter are not in contact with each other or at the level of the hinge parts 7 offset relative to each other at the joining junction of the two spans, nor at the level of the bearing faces 10 also offset.
  • the axes 6a and the hooks 6b for locking the locks 6 and the feet 24 and openings 25 for positioning are placed so that there is no preferred order for the assembly of two spans.
  • the two pairs of end folded nozzles respectively of the two coupled spans 1 are then unlocked of their support structure 2 by maneuvering the arms 27 corresponding to the locking hooks 29 in the unlocking direction.
  • the handling crane G is then used to pivot the two pairs of end jaws 4 around their articulation axes 5 so that the locking axes 6a of a nose 4 of an end pair and the lower locking axes 6a of the supporting structure associated with the other access spout 4 of this same extreme pair respectively engage in the lower locking hooks of the carrying structure 2 of the first spout 4 of the pair and the locking hooks 6b of the spout 4 associated with the second support structure 2.
  • FIGS. 15A and 15B represent a span 1 deposited above a breach B of relatively small width.
  • This span has the spouts 4 of two end pairs which have been deployed and locked at the ends of the span as described with reference to the two pairs of end spouts of the two coupled spans 1 of FIGS. 14D and 14E and rests by its spouts forming spouts of access on the two opposite edges of the breach B.
  • the invention has been described with reference to a span with two sets of load-bearing structures and spouts to form two parallel tracks respectively for the side wheels of vehicles, but it is understood that it also applies to a span with a single structure load-bearing and with two extreme spouts to form a track with a width allowing the passage of vehicles.

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  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Bridges Or Land Bridges (AREA)
  • Rigid Containers With Two Or More Constituent Elements (AREA)
  • Internal Circuitry In Semiconductor Integrated Circuit Devices (AREA)
  • Rod-Shaped Construction Members (AREA)
  • Body Structure For Vehicles (AREA)
  • Road Paving Structures (AREA)
  • Jib Cranes (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
  • Seal Device For Vehicle (AREA)

Abstract

A bridging system for clearing a breach comprising at least two identical beams rigidly connectable endwise and including each one at least one supporting structure having treadways at the upper portion and two noses pivoted to both ends, respectively, of the supporting structure so that each nose assumes a position folded back onto the structure and a position extended in prolongation of the latter.

Description

La présente invention concerne un système de pontage destiné à permettre notamment à des véhicules militaires de franchir en particulier des brèches.The present invention relates to a bridging system intended in particular to allow military vehicles to cross breaches in particular.

Les systèmes de pontage utilisés jusqu'à maintenant comprennent une travure monolithique de courte portée pour le franchissement d'une brèche relativement petite ou une travure monolithique de plus grande portée pour le franchissement de brèches relativement grandes.The bridging systems used until now include a short span monolithic span for crossing a relatively small breach or a larger span monolithic span for crossing relatively large breaches.

De tels systèmes ont pour inconvénient de nécessiter au moins deux véhicules de transport, l'un d'au moins une travure de courte portée et l'autre d'au moins une travure de plus grande portée.The disadvantage of such systems is that they require at least two transport vehicles, one of at least one short span span and the other of at least one longer span span.

La présente invention a pour but d'éliminer l'inconvénient ci-dessus en proposant un système de pontage destiné à permettre notamment à des véhicules militaires de franchir en particulier des brèches et caractérisé en ce qu'il comprend au moins deux travures identiques pouvant être accouplées rigidement bout à bout, chaque travure comprenant au moins une structure porteuse résistante à voie de roulement en partie supérieure ; deux becs montés articulés respectivement aux deux extrémités de la structure porteuse autour d'un axe d'articulation transversal de façon que chaque bec occupe soit une position rabattue ou repliée sur la structure porteuse, soit une position déployée en prolongement de la structure porteuse à laquelle le bec est fixé rigidement par un dispositif de verrouillage ; une travure, lorsqu'utilisée pour couvrir une brèche, ayant ses deux becs extrêmes déployés formant bec d'accès fixés rigidement à la structure porteuse et en appui respectivement sur les deux bords opposés de la brèche.The object of the present invention is to eliminate the above drawback by proposing a bridging system intended in particular to allow military vehicles to cross in particular breaches and characterized in that it comprises at least two identical spans which can be rigidly coupled end to end, each span comprising at least one resistant bearing structure with a rolling track in the upper part; two spouts mounted articulated respectively at the two ends of the support structure around a transverse articulation axis so that each spout occupies either a folded or folded position on the support structure, or a deployed position in extension of the support structure at which the spout is rigidly fixed by a locking device; a span, when used to cover a breach, having its two end spouts deployed forming an access spout rigidly fixed to the support structure and bearing respectively on the two opposite edges of the breach.

Selon une caractéristique de l'invention, le dispositif de verrouillage de chaque bec à la structure porteuse comprend au moins un verrou constitué de premier et second moyens respectivement mâle et femelle solidaires du bec et de la structure porteuse et situés sensiblement à une même distance de part et d'autre du plan horizontal contenant l'axe d'articulation relativement à la structure porteuse de façon que le premier moyen puisse se verrouiller dans le second moyen en position déployée du bec.According to a characteristic of the invention, the device for locking each spout to the supporting structure comprises at least one latch consisting of first and second male and female means respectively integral with the spout and the supporting structure and located substantially at the same distance from on either side of the horizontal plane containing the axis of articulation relative to the support structure so that the first means can be locked in the second means in the deployed position of the spout.

Selon une autre caractéristique de l'invention, deux travures sont accouplées rigidement bout à bout, au niveau de leurs faces frontales respectives définies chacune par un bec rabattu sur la structure porteuse correspondante, par deux dispositifs de verrouillage solidaires respectivement des deux travures à leurs extrémités respectives, chaque dispositif de verrouillage étant constitué par le dispositif de verrouillage précité à au moins un verrou, les premier et second moyens du verrou du dispositif de verrouillage à l'extrémité de l'une des deux travures s'engageant respectivement avec les second et premier moyens du verrou du dispositif de verrouillage à l'extrémité de l'autre travure lors de l'accouplement des deux travures.According to another characteristic of the invention, two spans are rigidly coupled end to end, at their respective front faces each defined by a bent folded down on the corresponding carrying structure, by two locking devices integral respectively with the two spans at their ends respective, each locking device being constituted by the aforementioned locking device with at least one lock, the first and second means of the locking of the locking device at the end of one of the two spans engaging respectively with the second and first means of the lock of the locking device at the end of the other span when the two spans are coupled.

Les premier et second moyens du verrou à une extrémité d'une travure sont solidaires respectivement d'un bec et de la structure porteuse et les premier et second moyens du verrou à l'extrémité opposée de la travure sont solidaires respectivement de la structure porteuse et de l'autre bec.The first and second means of the latch at one end of a span are secured respectively to a spout and the support structure and the first and second means of the latch at the opposite end of the span are respectively secured to the support structure and on the other beak.

Avantageusement, le premier moyen d'un verrou est un axe transversal de verrouillage et le second moyen de ce verrou est un crochet de verrouillage, l'axe et le crochet de verrouillage faisant saillie d'un même côté de la face frontale correspondante d'une travure.Advantageously, the first means of a lock is a transverse locking axis and the second means of this lock is a locking hook, the axis and the locking hook projecting on the same side of the corresponding front face of a span.

De préférence, chaque travure comprend à l'une de ses extrémités un pied de positionnement et à son extrémité opposée une ouverture de positionnement, le pied de positionnement d'une travure s'engageant dans l'ouverture de positionnement d'une autre travure lors de l'accouplement des deux travures pour leurs positionnements mutuels, l'assemblage pied-ouverture de positionnement reprenant les efforts de cisaillement résultant du passage de véhicules sur les voies de roulement des deux travures accouplées.Preferably, each span comprises at one of its ends a positioning foot and at its opposite end a positioning opening, the positioning foot of one span engaging in the positioning opening of another span when of the coupling of the two spans for their mutual positioning, the assembly foot-opening of positioning taking up the shearing forces resulting from the passage of vehicles on the tracks of the two spans coupled.

Selon toujours une autre caractéristique de l'invention, chaque bec présente une forme générale en pyramide à section transversale rectangulaire, dont deux faces opposées sont destinées à servir de voies de roulement respectivement aux positions rabattue et déployée du bec qui est articulé autour de l'axe d'articulation précité par un côté transversal de la base rectangulaire du bec.Still according to another characteristic of the invention, each spout has a general pyramid shape with rectangular cross section, two opposite faces of which are intended to serve as rolling tracks respectively in the folded and deployed positions of the spout which is articulated around the articulation axis mentioned above by a transverse side of the rectangular base of the spout.

Selon encore une autre caractéristique de l'invention, chaque bec comprend deux parois latérales formant guide-roues en position rabattue du bec sur la structure porteuse et escamotable en position déployée du bec.According to yet another characteristic of the invention, each spout comprises two side walls forming wheel guides in the folded position of the spout on the support structure and retractable in the deployed position of the spout.

Chaque paroi latérale formant guide-roues coulisse librement relativement parallèlement à la face latérale correspondante du bec en pyramide de façon à occuper la position escamotée lorsque le bec est déployé et une position fixe de service lorsque le bec est rabattu sur la structure porteuse.Each side wall forming a wheel guide slides freely relatively parallel to the corresponding side face of the pyramid spout so as to occupy the retracted position when the spout is deployed and a fixed service position when the spout is folded down on the supporting structure.

Avantageusement, chaque paroi latérale précitée est en appui par gravité sur une paroi latérale sous-jacente fiche solidaire de la structure porteuse et formant guide-roues en position déployée du bec.Advantageously, each aforementioned side wall is supported by gravity on an underlying side wall plug secured to the support structure and forming wheel guide in the deployed position of the spout.

L'invention sera mieux comprise, et d'autres buts, caractéristiques, détails et avantages de celle-ci apparaîtront plus clairement au cours de la description explicative qui va suivre faite en référence aux dessins schématiques annexés donnés uniquement à titre d'exemple illustrant un mode de réalisation de l'invention, et dans lesquels :

  • La figure 1 représente une vue en bout d'une travure d'un système de pontage conforme à l'invention ;
  • La figure 2 est une vue agrandie d'une autre de la travure de la figure 1 ;
  • La figure 3 est également une vue agrandie de l'autre partie de la travure de la figure 1 ;
  • Lafigure 4 est une vue partielle en coupe suivant la ligne IV-IV de la figure 1 ;
  • La figure 5 représente un bec en positions déployée et verrouillée à la structure porteuse correspondante d'une travure ;
  • La figure 6 est une vue en section suivant la ligne VI-VI de la figure 1 ;
  • La figure 7 est une vue en section suivant la ligne VII-VII de la figure 1 ;
  • La figure 8 est une vue en perspective d'une portion d'articulation d'un bec à la structure porteuse d'une travure ;
  • La figure 9 est une vue en section suivant la ligne IX-IX de la figure 4 ;
  • La figure 10 est une vue plane d'un bec seul ;
  • La figure 11 est une vue en section suivant la ligne XI-XI de la figure 10 ;
  • La figure 12 est une vue en section suivant la ligne XII-XII de la figure 10 ;
  • La figure 13 représente le mode de verrouillage d'un bec d'accès en position rabattue à la structure porteuse d'une travure ;
  • Les figures 14A à 14E représentent la façon dont deux travures sont accouplées bout à bout pour en former une travure de grande portée ; et
  • Les figures 15A et 15B représentent la dépose d'une travure unique au-dessus d'une brèche à franchir.
The invention will be better understood, and other objects, characteristics, details and advantages thereof will appear more clearly during the explanatory description which follows, made with reference to the appended schematic drawings given solely by way of example illustrating a embodiment of the invention, and in which:
  • Figure 1 shows an end view of a span of a bridging system according to the invention;
  • Figure 2 is an enlarged view of another of the span of Figure 1;
  • Figure 3 is also an enlarged view of the other part of the span of Figure 1;
  • Figure 4 is a partial sectional view along line IV-IV of Figure 1;
  • FIG. 5 represents a spout in deployed and locked positions to the corresponding supporting structure of a span;
  • Figure 6 is a sectional view along line VI-VI of Figure 1;
  • Figure 7 is a sectional view along line VII-VII of Figure 1;
  • Figure 8 is a perspective view of a portion of articulation of a spout to the supporting structure of a span;
  • Figure 9 is a sectional view along line IX-IX of Figure 4;
  • Figure 10 is a plan view of a single beak;
  • Figure 11 is a sectional view along line XI-XI of Figure 10;
  • Figure 12 is a sectional view along line XII-XII of Figure 10;
  • Figure 13 shows the locking mode of an access spout in the folded position to the supporting structure of a span;
  • FIGS. 14A to 14E represent the way in which two spans are coupled end to end to form a spans of great span; and
  • FIGS. 15A and 15B represent the removal of a single span above a breach to be crossed.

En se reportant aux figures, la référence 1 désigne une travure conforme à l'invention destinée au franchissement d'une brèche de relativement faible largeur. La travure 1 comprend deux structures porteuses résistantes identiques 2 s'étendant longitudinalement et reliées entre elles par plusieurs bras de liaison transversaux rigides 3, dont un seul est représenté, et solidarisés à chaque structure porteuse 2 par exemple par soudage. Chaque structure porteuse 2 comprend une partie inférieure 2a formant semelle à laquelle sont solidarisés des montants 2b supportant une partie supérieure formant voie de roulement constituée d'une partie centrale horizontale 2c et deux parties extrêmes 2d solidarisées respectivement aux deux extrémités de la partie centrale 2c en prolongeant celle-ci de façon descendante. Comme cela ressort plus particulièrement de la figure 9, chaque structure porteuse 2 est réalisée à partir d'une charpente métallique mécano-soudée, les parties centrales 2c et extrêmes 2d formant voie de roulement étant formées de deux plaques parallèles à triangulation de renforcement entre elles. Pour ne pas surcharger les figures, une seule partie extrême 2d a été représentée.Referring to the figures, the reference 1 designates a span according to the invention intended for crossing a breach of relatively small width. The span 1 comprises two identical resistant load-bearing structures 2 extending longitudinally and interconnected by several rigid transverse link arms 3, only one of which is shown, and secured to each load-bearing structure 2 for example by welding. Each support structure 2 comprises a lower part 2a forming a sole to which are fixed uprights 2b supporting an upper part forming a running track consisting of a horizontal central part 2c and two end portions 2d secured respectively to the two ends of the central portion 2c by extending the latter downwardly. As can be seen more particularly from FIG. 9, each support structure 2 is produced from a mechanically welded metal frame, the central parts 2c and extremes 2d forming a rolling track being formed from two parallel plates with triangulation of reinforcement between them . In order not to overload the figures, only one extreme part 2d has been shown.

Deux becs identiques 4, dont un seul est représenté en détail, sont montés articulés respectivement aux deux extrémités d'une structure porteuse 2 autour d'un axe d'articulation transversal 5 de façon que chaque bec 4 occupe soit une position rabattue ou repliée sur la partie extrême correspondante 2d de la structure porteuse 2 comme cela est représenté en figure 4, soit une position déployée en prolongement de la structure porteuse 2 à laquelle le bec 4 est fixé rigidement par un dispositif de verrouillage 6 comme représenté en figure 5. Chaque bec 4 présente une forme générale en pyramide à section transversale rectangulaire, dont deux faces opposées 4a et 4b sont destinées à servir de voie de roulement respectivement aux positions rabattue et déployée du bec qui est articulé autour de l'axe d'articulation 5 par un côté transversal 4c de la base rectangulaire du bec 4. Ainsi, en position rabattue du bec 4 sur la partie extrême 2d, la face 4a du bec 4 prolonge sensiblement horizontalement la voie de roulement de la partie centrale 2c et, en position déployée du bec 4, la face 4b de celui-ci prolonge la voie de roulement de la partie extrême 2d.Two identical spouts 4, only one of which is shown in detail, are mounted articulated respectively at the two ends of a support structure 2 around a transverse articulation axis 5 so that each spout 4 occupies either a folded or folded position on the corresponding end portion 2d of the support structure 2 as shown in FIG. 4, that is to say a deployed position as an extension of the support structure 2 to which the spout 4 is rigidly fixed by a locking device 6 as shown in FIG. 5. Each spout 4 has a general pyramid shape with a rectangular cross section, two opposite faces 4a and 4b of which are intended to serve as a rolling track respectively in the folded and deployed positions of the spout which is articulated around the axis of articulation 5 by a transverse side 4c of the rectangular base of the spout 4. Thus, in the folded position of the spout 4 on the end part 2d, the face 4a of the spout 4 pr substantially extends horizontally the raceway of the central part 2c and, in the deployed position of the spout 4, the face 4b thereof extends the raceway of the end part 2d.

Dans la mesure où les deux structures porteuses 2 avec leurs deux becs extrêmes associés 4 sont identiques, seul un ensemble structure porteuse 2 et becs associés 4 sera décrit.Insofar as the two carrying structures 2 with their two associated end nozzles 4 are identical, only a set of supporting structure 2 and associated nozzles 4 will be described.

L'axe transversal d'articulation 5 est en forme de charnière d'articulation constituée de plusieurs parties espacées en forme de chape 7 avec les deux branches parallèles 7a de chaque partie 7 solidarisées par des vis de fixation 8 à l'extrémité de la partie extrême 2d de la structure 2. Une partie centrale 7b disposée entre deux branches 7a d'une partie formant chape 7 est solidarisée au côté transversal 4c du bec 4 par des vis de fixation 9 et montée pivotante entre les deux branches 7a autour de l'axe d'articulation 5 formé par un axe transversal de pivotement 7c solidaire de la partie centrale 7b et pouvant tourner à ses deux extrémités libres respectivement dans deux perçages légèrement oblongs 7d usinés à travers les deux branches 7a.The transverse articulation axis 5 is in the form of an articulation hinge consisting of several spaced parts in the form of a yoke 7 with the two parallel branches 7a of each part 7 joined by fixing screws 8 at the end of the part extreme 2d of the structure 2. A central part 7b disposed between two branches 7a of a part forming a yoke 7 is secured to the transverse side 4c of the spout 4 by fixing screws 9 and pivotally mounted between the two branches 7a around the articulation axis 5 formed by a transverse pivot axis 7c integral with the central part 7b and capable of rotating at its two free ends respectively in two slightly oblong bores 7d machined through the two branches 7a.

Des faces d'appui 10 sont disposées de part et d'autre de l'axe transversal 5 symétriquement à celui-ci et au-dessus et en dessous des parties formant chape 7 en position rabattue du bec 4. Ces faces d'appui 10 sont usinées sur des pièces ou blocs supérieurs ou inférieurs 11 solidaires respectivement aux extrémités de la partie extrême 2d et du côté transversal 4c du bec 4 par des vis de fixation 12 noyées dans les blocs 11 perpendiculairement au plan horizontal contenant l'axe transversal 5 et se vissant sous les branches 7a des parties 7 pour les blocs inférieurs et sur les autres branches 7a pour les blocs supérieurs 11 ; des parties en équerre lia venant en appui, une fois les vis 12 serrées, sur des épaulements correspondants des extrémités de la partie 2d de la structure 2 et du côté transversal 4c du bec 4. Les blocs 11 sont de plus fixés aux extrémités de la partie 2d et du côté transversal 4c par des vis de fixation 12a, se vissant dans des trous taraudés correspondants de ces extrémités perpendiculaires au plan de la figure 2 ou de la figure 3, les trous de passage des vis 12a à travers les blocs 11 portant la référence 12b. Lorsque chaque bec 4 occupe la position déployée en prolongement de la partie 2d pour servir ainsi de bec d'accès, les faces d'appui 10 sont en abouttement l'une contre l'autre de façon à soulager l'axe d'articulation des efforts appliqués sur celui-ci notamment lors du passage de véhicules lourds sur la voie de roulement.Support faces 10 are arranged on either side of the transverse axis 5 symmetrically thereto and above and below the yoke portions 7 in the folded position of the spout 4. These support faces 10 are machined on upper or lower parts or blocks 11 secured respectively to the ends of the end part 2d and of the transverse side 4c of the spout 4 by fixing screws 12 embedded in the blocks 11 perpendicular to the horizontal plane containing the transverse axis 5 and screwing under the branches 7a of the parts 7 for the lower blocks and on the other branches 7a for the upper blocks 11; square parts 11a coming to bear, once the screws 12 have been tightened, on corresponding shoulders of the ends of the part 2d of the structure 2 and of the transverse side 4c of the spout 4. The blocks 11 are moreover fixed to the ends of the part 2d and on the transverse side 4c by fixing screws 12a, screwing in corresponding tapped holes of these ends perpendicular to the plane of FIG. 2 or of FIG. 3, the holes for the passage of the screws 12a through the blocks 11 bearing the reference 12b. When each spout 4 occupies the deployed position in extension of the part 2d to thus serve as an access spout, the bearing faces 10 are abutting one against the other so as to relieve the axis of articulation of the forces applied to it, in particular when passing heavy vehicles on the track.

Le dispositif de verrouillage d'un bec déployé 4 à la structure porteuse 2 comprend plusieurs verrous 6 constitués chacun de premier 6a et second 6b moyens respectivement mâle et femelle solidaires du bec 4 et de la structure porteuse 2 et situés, lorsqu'un bec occupe la position rabattue, à une même distance de part et d'autre du plan horizontal contenant l'axe d'articulation 5 du bec relativement à la structure porteuse 2. Les premiers moyens 6a des verrous 6 sont constitués par des axes transversaux coaxiaux de verrouillage solidaires, à une extrémité d'un ensemble structure porteuse 2 et becs 4, du côté transversal supérieur 4d d'un bec 4 opposé au côté transversal inférieur 4c de ce bec en considérant le bec 4 en position rabattue et, à l'extrémité opposée de cet ensemble, de la partie inférieure formant semelle 2a de la structure porteuse 2. Plus précisément, les axes transversaux 6a sont logés respectivement dans des ouvertures longitudinales en forme de U 13 définies dans le côté transversal 4d du bec 4 de façon que les axes 6a fassent saillie de la face frontale 4e du bec 4 définissant la base rectangulaire de celui-ci ou dans la face frontale 2a1 de la partie 2a. Les seconds moyens des verrous 6 sont constitués par des crochets de verrouillage alignés 6b solidaires, à l'extrémité d'un ensemble structure porteuse 2 - becs 4, de la partie inférieure formant semelle 2a de la structure 2 et, a l'extrémité opposée de cet ensemble, du côté transversal supérieur 4d du bec associé 4. Chaque crochet 6b est monté pivotant dans une ouverture longitudinale en U 14 formant chape autour d'un axe transversal 14a entre une position déverrouillée et une position verrouillée. Comme représenté, pour quatre crochets de verrouillage 6b à quatre axes de verrouillage 6a, ces crochets sont manoeuvrés deux à deux respectivement par deux leviers latéraux, seuls les deux leviers 15 associés aux crochets inférieurs 6b à l'extrémité d'un ensemble structure porteuse 2 et bec 4 étant représentés. Chaque levier 15 a son extrémité opposée à la poignée de manoeuvre solidaire de l'axe de pivotement 14a traversant deux évidements formant chapes 14 en étant solidarisé aux deux crochets 6b et est également solidaire, à une portion intermédiaire entre la poignée de manoeuvre et l'extrémité reliée à l'axe 14a, par une barre de liaison 16 entraînant simultanément les deux crochets 6b à leur position de déverrouillage ou de verrouillage en manoeuvrant le levier 15. La barre de liaison 16 traverse deux pattes 17 solidaires respectivement de deux crochets 6b. Les parties formant chape 14 des crochets inférieurs 6b font saillie de la face frontale 2e de liaison de l'extrémité de la partie 2d à l'extrémité correspondante où se trouve la face 2a1 de la partie inférieure 2a de la structure 2 et d'un même côté que les axes transversaux supérieurs 6a, les faces 2e et 4e formant face frontale d'une travure. De même, les crochets supérieurs 6b à l'extrémité opposée de l'ensemble structure porteuse 2 et becs 4 font saillies de la face frontale 4e de l'autre bec 4 d'un même côté que les axes transversaux inférieurs 6a. L'un des crochets de verrouillage d'une paire de crochets 10b actionnés en concomitance par un levier 15 est mécaniquement relié à un dispositif de maintien 18 de la paire de crochets 6b soit à sa position verrouillée, soit à sa position déverouillée. Ce dispositif de maintien 18 comprend deux étriers extrêmes 19 et 20 fixés de façon articulée respectivement à la patte d'attache 17 d'un crochet 6b et à une patte de fixation 21 solidaire soit de la face frontale 2e pour les crochets inférieurs 6b, soit de la face frontale 4e pour les crochets supérieurs 6b. Les deux étriers 19, sont assemblés l'un à l'autre par une vis 22 vissée dans la paroi arrière de liaison des branches de l'étrier 19 et dont la tête 22a est maintenue en appui au fond d'une partie en forme de coupelle 23 par un ressort de compression précontraint 24 en appui entre la face arrière de l'étrier 19 et le rebord annulaire externe 23a de la coupelle 23 solidarisé à la face arrière de l'étrier 20. Ainsi, lorsqu'un levier 15 est manoeuvré dans le sens du déverrouillage indiqué par la flèche F1 en figure 6, les deux crochets pivotent ensemble autour de l'axe de pivotement 14a et amènent le dispositif de maintien 18 à pivoter par ses étriers d'articulation suivant le sens indiqué par la flèche F2 à une position où il maintient les deux crochets en position de déverrouillage. Ce dispositif de maintien 18 permet également de maintenir une paire de crochets 6b à la position de verrouillage représentée en figure 6. Les axes 6a et les crochets 6b de verrouillage sont disposés symétriquement au plan médian longitudinal d'un ensemble structure porteuse 2 - becs 4 contenant l'axe X-X′ représenté en figure 2 ou en figure 3.The device for locking a spout deployed 4 to the support structure 2 comprises several locks 6 each consisting of first 6a and second 6b respectively male and female means integral with the spout 4 and the support structure 2 and located, when a spout occupies the folded position, at the same distance on either side of the horizontal plane containing the articulation axis 5 of the spout relative to the support structure 2. The first means 6a of the latches 6 are constituted by transverse coaxial locking axes integral with one end of a support structure 2 and spouts 4 assembly, on the upper transverse side 4d of a spout 4 opposite the lower transverse side 4c of this spout considering the spout 4 in the folded position and, at the opposite end of this assembly, of the lower part forming the sole 2a of the support structure 2. More specifically, the transverse axes 6a are housed respectively in longitudinal openings in form e of U 13 defined in the transverse side 4d of the spout 4 so that the axes 6a protrude from the front face 4e of the spout 4 defining the rectangular base thereof or in the front face 2a1 of the part 2a. The second means of the locks 6 are constituted by aligned locking hooks 6b secured to the end of a carrier structure 2 - spouts 4 assembly, of the lower part forming sole 2a of the structure 2 and, at the opposite end of this assembly, on the upper transverse side 4d of the associated spout 4. Each hook 6b is pivotally mounted in a longitudinal U-shaped opening 14 forming a yoke around an axis transverse 14a between an unlocked position and a locked position. As shown, for four locking hooks 6b with four locking pins 6a, these hooks are operated two by two respectively by two lateral levers, only the two levers 15 associated with the lower hooks 6b at the end of a support structure assembly 2 and spout 4 being shown. Each lever 15 has its end opposite to the operating handle integral with the pivot axis 14a passing through two recesses forming yokes 14 while being secured to the two hooks 6b and is also integral with an intermediate portion between the operating handle and the end connected to the axis 14a, by a connecting bar 16 simultaneously driving the two hooks 6b to their unlocking or locking position by operating the lever 15. The connecting bar 16 crosses two tabs 17 secured respectively to two hooks 6b. The yoke portions 14 of the lower hooks 6b project from the front face 2e connecting the end of the part 2d to the corresponding end where the face 2a1 of the lower part 2a of the structure 2 and a same side as the upper transverse axes 6a, the 2nd and 4th faces forming the front face of a span. Likewise, the upper hooks 6b at the opposite end of the assembly of the supporting structure 2 and the spouts 4 protrude from the front face 4e of the other spout 4 on the same side as the lower transverse axes 6a. One of the locking hooks of a pair of hooks 10b actuated concomitantly by a lever 15 is mechanically connected to a holding device 18 of the pair of hooks 6b either in its locked position or in its unlocked position. This holding device 18 comprises two end brackets 19 and 20 fixed in an articulated manner respectively to the fastening tab 17 of a hook 6b and to a fixing tab 21 secured either to the front face 2e for the lower hooks 6b, or of the front face 4e for the upper hooks 6b. The two stirrups 19 are assembled to one another by a screw 22 screwed into the rear wall connecting the branches of the stirrup 19 and the head 22a of which is held in abutment at the bottom of a part in the form of cup 23 by a pre-stressed compression spring 24 bearing between the rear face of the stirrup 19 and the external annular rim 23a of the cup 23 secured to the rear face of the stirrup 20. Thus, when a lever 15 is maneuvered in the unlocking direction indicated by the arrow F1 in FIG. 6, the two hooks pivot together around the pivot axis 14a and cause the holding device 18 to pivot by its articulation stirrups in the direction indicated by the arrow F2 to a position where it keeps the two hooks in the unlocked position. This holding device 18 also makes it possible to maintain a pair of hooks 6b in the locking position shown in FIG. 6. The pins 6a and the locking hooks 6b are arranged symmetrically in the longitudinal median plane of a support structure assembly 2 - nozzles 4 containing the axis XX ′ represented in FIG. 2 or in FIG. 3.

Il est de plus à noter que les deux structures porteuses 2 d'une travure 1 sont disposées symétriquement à un plan médian longitudinal contenant l'axe Y-Y′ de la figure 1, de façon qu'aux axes de verrouillage supérieurs et crochets de verrouillage inférieurs d'un même côté d'une extrémité d'un ensemble structure porteuse 2 - becs rabattus 4 correspondent respectivement les crochets de verrouillage supérieurs et axes de verrouillage inférieurs du même côté de l'extrémité, opposée à l'extrémité précédente, de l'autre ensemble structure porteuse 2 - becs rabattus 4.It should also be noted that the two load-bearing structures 2 of a span 1 are arranged symmetrically to a longitudinal median plane containing the axis YY ′ of FIG. 1, so that at the upper locking axes and lower locking hooks on the same side of one end of a support structure assembly 2 - folded out beaks 4 correspond respectively the upper locking hooks and lower locking pins on the same side of the end, opposite the previous end, of the other supporting structure assembly 2 - folded spouts 4.

Chaque ensemble structure porteuse 2 - becs 4 comprend à l'une de ses extrémités un pied de positionnement 24 en forme de pyramide et solidaire de la face frontale 2e de la structure 2 et, à son extrémité opposée, une ouverture de positionnement 25 réalisée à travers la face frontale opposée 2e de la structure 2.Each support structure 2 - spouts 4 assembly comprises at one of its ends a positioning foot 24 in the shape of a pyramid and integral with the front face 2e of the structure 2 and, at its opposite end, a positioning opening 25 made at across the opposite front face 2e of structure 2.

Chaque pied de positionnement et chaque ouverture de positionnement 25 sont dimensionnés de façon que les deux pieds de positionnement opposés 24 respectivement de deux ensembles structures porteuses 2 - becs rabattus 4 d'une travure 1 s'engagent respectivement dans deux ouvertures de positionnement opposées 25 respectivement de deux ensembles structures porteuses - becs rabattus 4 d'une autre travure 1 lors de l'accouplement bout à bout de ces deux travures pour leurs positionnements mutuels, l'assemblage ainsi réalisé pied 24 - ouverture 25 de positionnement étant destiné à reprendre les efforts de cisaillement résultants du passage de véhicules lourds sur les voies de roulement des deux travures accouplées bout à bout. Chaque pied de positionnement 24 et chaque ouverture de positionnement 25 d'un ensemble sont disposés symétriquement au plan médian longitudinal passant par l'axe X-X′ et situés respectivement entre l'axe d'articulation 5 et les crochets de verrouillage 6b et entre l'axe 5 et les axes de verrouillage 6a.Each positioning foot and each positioning opening 25 are dimensioned in such a way that the two opposite positioning feet 24 respectively of two sets of supporting structures 2 - folded spouts 4 of a span 1 respectively engage in two opposite positioning openings 25 respectively of two sets of supporting structures - folded spouts 4 of another span 1 during the end-to-end coupling of these two spans for their mutual positioning, the assembly thus produced foot 24 - opening 25 for positioning being intended to take up the forces shear resulting from the passage of heavy vehicles on the tracks of the two spans coupled end to end. Each positioning foot 24 and each positioning opening 25 of an assembly are arranged symmetrically to the longitudinal median plane passing through the axis XX ′ and situated respectively between the articulation axis 5 and the locking hooks 6b and between the axis 5 and the locking axes 6a.

La face frontale de l'un des becs rabattus 4 de chaque ensemble structure porteuse 2 - becs 4 et située au-dessus d'un pied de positionnement 24 comprend une ouverture 26 de dimensions supérieures à celles du pied de positionnement 24 de façon à permettre le libre passage à travers la face frontale 4e du pied de positionnement 24 sous-jacent lors du déploiement du bec 4.The front face of one of the folded spouts 4 of each support structure 2 - spouts 4 assembly and located above a positioning foot 24 comprises a opening 26 of dimensions greater than those of the positioning foot 24 so as to allow free passage through the front face 4e of the underlying positioning foot 24 when the spout 4 is deployed.

Chaque partie centrale 2c formant voie de roulement d'une travure 1 comprend deux parois latérales 2f et 2g délimitant la voie de roulement et formant guide-roues de roues situées d'un même côté d'un véhicule circulant sur les deux voies de roulement parallèles de la travure 1. Les parois formant guide-roues 2f et 2g sont solidarisées par soudage à la partie supérieure 2c de chaque structure porteuse 2. De même, la partie supérieure 2d formant voie de roulement de chaque structure 2 comprend deux parois latérales délimitant la voie de roulement et formant guide-roues 2h et 2i. Les parois 2h et 2i sont solidarisées à la partie supérieure 2d également par soudage. Chaque bec 4 comprend deux parois latérales 4f et 4g délimitant la voie de roulement 4a du bec 4 et pouvant coulisser librement parallèlement aux faces latérales du bec, de façon à occuper une position de service faisant saillie au-dessus de la voie de roulement du bec perpendiculairement à cette dernière lorsque le bec est en position rabattue, ou une position escamotée ou effacée lorsque le bec 4 est déployé en contact sur le sol, les deux parois 4f et 4g s'effaçant jusqu'à venir dans le plan de pose du bec. La figure 12 représente la structure permettant à la paroi formant guide-roue 4f de coulisser par rapport à la face latérale d'un bec 4 pour occuper les positions de service et escamotée, la structure utilisée pour le coulissement de la paroi formant guide-roue 4g étant identique. La paroi latérale 4f, représentée en position de service, comporte plusieurs trous oblongs transversaux espacés 4h au niveau de sa partie supérieure traversés respectivement par des axes de guidage 4i solidaires, par exemple par vissage, de la face latérale correspondante du bec 4. Chaque axe de guidage 4i comporte une tête 4i1 de dimension supérieure à la largeur du trou oblong correspondant 4h. Plusieurs pièces transversales espacées en forme de U horizontal 4j sont fixées, par exemple par soudage, à la face latérale du bec 4 d'une certaine distance en dessous des axes de guidage 4i. Une plaque 4k dépassant extérieurement à la paroi latérale 4f est fixée par soudage à l'extrémité inférieure de la paroi 4f le long de celle-ci et fait saillie intérieurement en formant des tenons s'engageant respectivement dans les pièces en forme de U 4j. La plaque 4k fait office de butée limitant le déplacement vers le bas de la paroi latérale 4f en considérant la figure 12 en prenant appui par gravité sur l'extrémité supérieure de la paroi latérale formant guide-roues 2h. Ainsi, en position de service, l'axe de guidage 4i se trouve au niveau de l'extrémité inférieure du trou oblong correspondant 4h. Lorsqu'un bec 4 est déployé suivant le sens de la flèche F3, l'extrémité supérieure de chaque paroi latérale formant guide-roues 4f, 4g du bec vient en appui sur le sol de façon à se déplacer par coulissement dans le sens indiqué par la flèche F4 en figure 12, escamotant ainsi cette paroi.Each central part 2c forming the track of a span 1 comprises two side walls 2f and 2g delimiting the track and forming wheel guide wheels located on the same side of a vehicle traveling on the two parallel tracks of the span 1. The walls forming wheel guide 2f and 2g are joined by welding to the upper part 2c of each support structure 2. Likewise, the upper part 2d forming the track of each structure 2 comprises two lateral walls delimiting the track and forming wheel guide 2h and 2i. The walls 2h and 2i are joined to the upper part 2d also by welding. Each spout 4 comprises two side walls 4f and 4g delimiting the track 4a of the spout 4 and being able to slide freely parallel to the side faces of the spout, so as to occupy a service position projecting above the track of the spout perpendicular to the latter when the spout is in the folded position, or a retracted or erased position when the spout 4 is deployed in contact with the ground, the two walls 4f and 4g disappearing until they come into the plane of laying the spout . FIG. 12 shows the structure allowing the wall forming the wheel guide 4f to slide with respect to the lateral face of a spout 4 to occupy the service and retracted positions, the structure used for sliding the wall forming the wheel guide 4g being identical. The side wall 4f, shown in the service position, has several transverse oblong holes spaced 4h at the level of its crossed upper part respectively by guide pins 4i secured, for example by screwing, to the corresponding lateral face of the spout 4. Each guide pin 4i has a head 4i1 of dimension greater than the width of the corresponding oblong hole 4h. Several transverse parts spaced in the form of a horizontal U 4j are fixed, for example by welding, to the lateral face of the spout 4 a certain distance below the guide axes 4i. A plate 4k projecting outwardly from the side wall 4f is fixed by welding to the lower end of the wall 4f along the latter and protrudes internally by forming studs respectively engaging in the U-shaped parts 4j. The plate 4k acts as a stop limiting the downward movement of the side wall 4f by considering FIG. 12 by bearing by gravity on the upper end of the side wall forming wheel guide 2h. Thus, in the service position, the guide axis 4i is located at the lower end of the corresponding oblong hole 4h. When a spout 4 is deployed in the direction of arrow F3, the upper end of each side wall forming wheel guide 4f, 4g of the spout comes to rest on the ground so as to move by sliding in the direction indicated by arrow F4 in FIG. 12, thus retracting this wall.

Chaque bec 4 est maintenu en position rabattue par des moyens de verrouillage latéraux 26 dont un seul est représenté en figure 13. Le moyen de verrouillage 26 comprend un bras de levier 27 monté pivotant autour d'un axe central transversal 28 solidaire de la portion transversale de liaison entre les deux parties 2c et 2d formant voie de roulement d'une structure porteuse 2. Le bras de levier 28 se termine au niveau supérieur par un crochet de verrouillage 29 dans lequel peut s'engager un axe transversal de verrouillage 30 solidaire au voisinage de l'extrémité libre 41 en forme de crochet du bec 4. Cette extrémité 41, en position rabattue du bec 4, repose dans un évidement transversal de forme conjuguée de la portion de jonction 2k. L'extrémité du levier 27, opposée au crochet de verrouillage 29, est reliée mécaniquement à un mécanisme de verrouillage et de déverrouillage (non représenté) commandé manuellement ou automatiquement. Un tel mécanisme peut être constitué d'une tringlerie de commande manuelle. En position rabattue d'un bec 4, les deux axes coaxiaux de verrouillage 30 sont encastrés dans leurs deux crochets de verrouillage respectifs 29. Pour déverrouiller le bec 4, le mécanisme de verrouillage est actionné de façon à faire pivoter le bras 27 autour de son axe de pivotement 28 suivant la flèche F5, désengageant ainsi les deux crochets 29 des axes de verrouillage 30.Each spout 4 is held in the folded position by lateral locking means 26, only one of which is shown in FIG. 13. The locking means 26 comprises a lever arm 27 mounted pivoting about a transverse central axis 28 integral with the transverse portion connecting the two parts 2c and 2d forming a rolling track for a supporting structure 2. The lever arm 28 ends at the upper level by a locking hook 29 in which a transverse locking axis 30 can engage integral with the vicinity of the free end 41 in the form of a hook of the spout 4. This end 41, in the folded position of the spout 4, rests in a transverse recess of conjugate shape of the junction portion 2k. The end of the lever 27, opposite the locking hook 29, is mechanically connected to a locking and unlocking mechanism (not shown) controlled manually or automatically. Such a mechanism may consist of a manual control linkage. In the folded position of a spout 4, the two coaxial locking axes 30 are embedded in their respective respective locking hooks 29. To unlock the spout 4, the locking mechanism is actuated so as to pivot the arm 27 around its pivot axis 28 along arrow F5, thereby disengaging the two hooks 29 from the locking pins 30.

Les figures 14A à 14E représentent la manutention de deux travures et leur assemblage bout à bout en vue d'en former une travure de grande portée pour couvrir une brèche de grande largeur.FIGS. 14A to 14E represent the handling of two spans and their end-to-end assembly in order to form a spans of great span to cover a very wide breach.

Un camion de transport T transporte à proximité d'une brèche à couvrir B au moins deux travures identiques superposées 1, dont les becs 4 sont verrouillés en position rabattue. Un engin à grue de manutention G prélève deux travures du camion de transport et les dépose sur le sol de façon qu'elles soient approximativement en alignement, avec un pied de positionnement 24 d'une extrémité d'une travure 1 se trouvant approximativement en face d'une ouverture de positionnement 25 à l'extrémité de l'autre travure 1, dont le pied de centrage 24 est également approximativement en face de l'ouverture de positionnement 25 de la première travure 1. La grue de manutention G déplace axialement l'une des deux travures 1 vers l'autre travure comme indiqué par la flèche F5 jusqu'à ce que les deux pieds de positionnement 24 s'engagent respectivement dans les deux ouvertures de positionnement 25 avec ensuite verrouillage des deux extrémités adjacentes des deux travures par engagement des axes de verrouillage inférieurs et supérieurs 6a d'une travure 1 respectivement dans les crochets de verrouillage inférieurs et supérieure de l'autre travure et engagement des axes de verrouillage inférieurs et supérieurs 6a de l'autre travure respectivement dans les crochets de verrouillage inférieurs et supérieurs 6b de la première travure. Bien entendu, les crochets inférieurs et supérieurs d'une travure avant engagement des pieds de positionnement dans leurs ouvertures de positionnement respectives 25 ont été déverrouillés en manoeuvrant les leviers latéraux correspondants 15 qui sont ensuite manoeuvrés dans le sens du verrouillage des crochets 6b une fois les pieds de positionnement engagés respectivement dans les ouvertures de positionnement 25. En position assemblée bout à bout des deux travures, les becs adjacents rabattus assurent une très bonne résistance mécanique notamment au niveau de la jonction d'assemblage des deux travures. Il est de plus à noter que pour être certain de bénéficier de l'augmentation de hauteur et par conséquent d'inertie procurée par la position rabattue des becs, ceux-ci ne sont pas en contact entre eux ni au niveau des parties formant charnières 7 décalées les unes par rapport aux autres à la jonction d'assemblage des deux travures, ni au niveau des faces d'appui 10 également décalées. Les axes 6a et les crochets 6b de verrouillage des verrous 6 et les pieds 24 et ouvertures 25 de positionnement sont placés de sorte qu'il n'y ait pas d'ordre privilégié pour l'assemblage de deux travures. Les deux paires de becs rabattus extrêmes respectivement des deux travures accouplées 1 sont ensuite déverrouillés de leur structure de support 2 en manoeuvrant les bras 27 correspondants aux crochets de verrouillage 29 dans le sens du déverrouillage. La grue de manutention G est alors utilisée pour faire pivoter autour de leurs axes d'articulation 5 les deux paires de becs extrêmes 4 de façon que les axes de verrouillage 6a d'un bec 4 d'une paire extrême et les axes inférieurs de verrouillage 6a de la structure porteuse associée à l'autre bec d'accès 4 de cette même paire extrême s'engagent respectivement dans les crochets de verrouillage inférieurs de la structure porteuse 2 du premier bec 4 de la paire et les crochets de verrouillage 6b du bec 4 associé à la deuxième structure porteuse 2. L'engagement de ces axes de verrouillage 6a s'effectue bien entendu en rabattant les crochets de verrouillage 6b de leur position de déverrouillage à leur position de verrouillage. Les deux paires de becs extrêmes 4 prolongent ainsi respectivement les deux voies de roulement parallèles formées par les parties 2d des deux structures porteuses 2 associées. En position déployée des deux paires de becs extrêmes 4 sur le sol, les parois latérales formant guide-roues 4f et 4g sont en position escamotée. L'engin à grue de manutention G dépose enfin les deux travures accouplées 1 au-dessus de la brèche B de façon que les deux paires de becs extrêmes 4 soient en appui respectivement sur les deux bords opposés de la brèche B.A transport truck T transports near at least one gap to cover B at least two identical overlapping spans 1, the spouts 4 of which are locked in the folded position. A handling crane machine G takes two spans from the transport truck and places them on the ground so that they are approximately in alignment, with a positioning foot 24 of one end of a span 1 lying approximately opposite a positioning opening 25 at the end of the other span 1, the centering leg 24 is also approximately opposite the positioning opening 25 of the first span 1. The handling crane G moves axially l 'one of the two span 1 towards the other span as indicated by arrow F5 until the two positioning feet 24 engage respectively in the two positioning openings 25 with then locking of the two adjacent ends of the two spans by engagement of the axes of lower and upper locking 6a of a span 1 respectively in the lower and upper locking hooks of the other span and engagement of the lower and upper locking pins 6a of the other span respectively in the lower and upper locking hooks 6b of the first span. Of course, the lower and upper hooks of a span before engagement of the positioning feet in their respective positioning openings 25 have been unlocked by operating the corresponding lateral levers 15 which are then operated in the direction of locking the hooks 6b once the positioning feet engaged respectively in the positioning openings 25. In the end-to-end position of the two spans, the adjacent folded spouts provide very good mechanical resistance, in particular at the junction for assembling the two spans. It should also be noted that to be certain of benefiting from the increase in height and consequently of inertia provided by the folded position of the spouts, the latter are not in contact with each other or at the level of the hinge parts 7 offset relative to each other at the joining junction of the two spans, nor at the level of the bearing faces 10 also offset. The axes 6a and the hooks 6b for locking the locks 6 and the feet 24 and openings 25 for positioning are placed so that there is no preferred order for the assembly of two spans. The two pairs of end folded nozzles respectively of the two coupled spans 1 are then unlocked of their support structure 2 by maneuvering the arms 27 corresponding to the locking hooks 29 in the unlocking direction. The handling crane G is then used to pivot the two pairs of end jaws 4 around their articulation axes 5 so that the locking axes 6a of a nose 4 of an end pair and the lower locking axes 6a of the supporting structure associated with the other access spout 4 of this same extreme pair respectively engage in the lower locking hooks of the carrying structure 2 of the first spout 4 of the pair and the locking hooks 6b of the spout 4 associated with the second support structure 2. The engagement of these locking pins 6a is of course effected by folding the locking hooks 6b from their unlocking position to their locking position. The two pairs of end nozzles 4 thus extend respectively the two parallel running tracks formed by the parts 2d of the two associated supporting structures 2. In the deployed position of the two pairs of end nozzles 4 on the ground, the side walls forming wheel guides 4f and 4g are in the retracted position. The handling crane machine G finally deposits the two coupled spans 1 above the gap B so that the two pairs of end nozzles 4 are in contact respectively on the two opposite edges of the gap B.

Les figures 15A et 15B représentent une travure 1 déposée au-dessus d'une brèche B de relativement faible largeur. Cette travure a les becs 4 de deux paires extrêmes qui ont été déployés et verrouillés aux extrémités de la travure comme décrit en référence aux deux paires de becs extrêmes des deux travures accouplées 1 des figures 14D et 14E et repose par ses becs formant becs d'accès sur les deux bords opposés de la brèche B.FIGS. 15A and 15B represent a span 1 deposited above a breach B of relatively small width. This span has the spouts 4 of two end pairs which have been deployed and locked at the ends of the span as described with reference to the two pairs of end spouts of the two coupled spans 1 of FIGS. 14D and 14E and rests by its spouts forming spouts of access on the two opposite edges of the breach B.

L'invention a été décrite en référence à une travure à deux ensembles structures porteuses et becs pour former deux voies parallèles de roulement respectivement de roues latérales de véhicules mais il est bien entendu qu'elle s'applique également à une travure à une seule structure porteuse et à deux becs extrêmes pour former une voie de roulement d'une largeur permettant le passage de véhicules.The invention has been described with reference to a span with two sets of load-bearing structures and spouts to form two parallel tracks respectively for the side wheels of vehicles, but it is understood that it also applies to a span with a single structure load-bearing and with two extreme spouts to form a track with a width allowing the passage of vehicles.

Claims (25)

1. Système de pontage destiné à permettre notamment a des véhicules militaires de franchir en particulier des brèches, caractérisé en ce qu'il comprend au moins deux travures identiques (1) pouvant être accouplées rigidement bout à bout, chaque travure (1) comprenant au moins une structure porteuse résistante (2) à voie de roulement en partie supérieure (2b, 2c); deux becs (4) montés articulés respectivement aux deux extrémités de la structure porteuse (2) autour d'un axe d'articulation transversal (5) de façon que chaque bec (4) occupe soit une position rabattue ou repliée sur la structure porteuse (2), soit une position déployée en prolongement de la structure porteuse (2) à laquelle le bec (4) est fixé rigidement par un dispositif de verrouillage (6) de façon que la travure (1) puisse être utilisée pour couvrir une brèche (B) avec ses deux becs extrêmes déployés formant becs d'accès en appui respectivement sur les deux bords opposés de la brèche (B); et en ce que les deux travures (1) sont accouplées rigidement bout à bout au niveau de leurs faces frontales respectives (2e, 4e) définies chacune par un bec (4) rabattu sur la structure porteuse correspondante (2) par deux dispositifs de verrouillage solidaires respectivement des deux travures à leurs extrémités respectives.1. Bridging system intended in particular to allow military vehicles to cross in particular breaches, characterized in that it comprises at least two identical spans (1) which can be rigidly coupled end to end, each span (1) comprising at less a resistant load-bearing structure (2) with an upper track (2b, 2c); two spouts (4) mounted articulated respectively at the two ends of the support structure (2) around a transverse articulation axis (5) so that each spout (4) occupies either a folded or folded position on the support structure ( 2), or a deployed position as an extension of the supporting structure (2) to which the spout (4) is rigidly fixed by a locking device (6) so that the span (1) can be used to cover a breach ( B) with its two end jaws deployed forming access jets bearing respectively on the two opposite edges of the breach (B); and in that the two spans (1) are rigidly coupled end to end at their respective front faces (2e, 4e) each defined by a spout (4) folded over the corresponding supporting structure (2) by two locking devices secured respectively to the two spans at their respective ends. 2. Système selon la revendication 1, caractérisé en ce que chaque dispositif de verrouillage assurant l'accouplement bout à bout des deux travures (1) précitées est constitué par un dispositif de verrouillage (6) précité destiné à fixer rigidement un bec (4) à la structure porteuse (2) précitée.2. System according to claim 1, characterized in that each locking device ensuring the end-to-end coupling of the two aforementioned spans (1) consists of a locking device (6) mentioned above intended to rigidly fix a spout (4) to the aforementioned supporting structure (2). 3. Système selon la revendication 1 ou 2, caractérisé en ce que le dispositif de verrouillage de chaque bec (4) à la structure porteuse (2) comprend au moins 18 un verrou (6) constitué de premier (6a) et second (6b) moyens respectivement mâle et femelle solidaires du bec (4) et de la structure porteuse (2) et situés sensiblement à une même distance de part et d'autre du plan horizontal contenant l'axe d'articulation (5) du bec (4) relativement à la structure porteuse (2) de façon que le premier moyen (6a) puisse s'engager dans le second moyen (6b) en position déployée du bec (4).3. System according to claim 1 or 2, characterized in that the locking device of each spout (4) to the support structure (2) comprises at least 18 a latch (6) consisting of first (6a) and second (6b) respectively male and female means integral with the spout (4) and the support structure (2) and located substantially at the same distance on either side of the horizontal plane containing the axis of articulation (5) of the spout (4) relative to the support structure (2) so that the first means (6a) can s' engage in the second means (6b) in the deployed position of the spout (4). 4. Système selon l'une des revendications précédentes, caractérisé en ce que lors de l'accouplement bout à bout de deux travures (1), les premier (6a) et second (6b) moyens du verrou d'un dispositif de verrouillage (6) à l'extrémité de l'une des deux travures (1) s'engagent respectivement avec les seconds (6b) et premier (6a) moyens du verrou d'un dispositif de verrouillage (6) à l'extrémité de l'autre travure.4. System according to one of the preceding claims, characterized in that during the end-to-end coupling of two spans (1), the first (6a) and second (6b) means of the latch of a locking device ( 6) at the end of one of the two spans (1) engage respectively with the second (6b) and first (6a) means of the latch of a locking device (6) at the end of the other works. 5. Système selon l'une des revendications précédentes, caractérisé en ce que les (premier (6a) et second (6b) moyens précités du verrou (6) à une extrémité d'une travure (1) sont solidaires respectivement d'un bec (4) et de la structure porteuse (2) et les premier (6a) et seond (6b) moyens du verrou (6) à l'extrémité opposée de la travure (1) sont solidaires respectivement de la structure porteuse (2) et de l'autre bec (4).5. System according to one of the preceding claims, characterized in that the (first (6a) and second (6b) aforementioned means of the lock (6) at one end of a span (1) are respectively secured to a spout (4) and the supporting structure (2) and the first (6a) and second (6b) means of the bolt (6) at the opposite end of the span (1) are respectively secured to the supporting structure (2) and on the other spout (4). 6. Système selon l'une des revendications précédentes, caractérisé en ce que le premier moyen précité d'un verrou (6) est un axe transversal de verrouillage (6a) et le second moyen de ce verrou (6) est un crochet de verrouillage (6b), l'axe (6a) et le crochet (6b) de verrouillage faisant saillie d'un même côté de la face frontale correspondante (2e, 4e) d'une travure (1).6. System according to one of the preceding claims, characterized in that the first aforementioned means of a lock (6) is a transverse locking pin (6a) and the second means of this lock (6) is a locking hook (6b), the axis (6a) and the locking hook (6b) projecting on the same side from the corresponding front face (2e, 4e) of a span (1). 7. Système selon l'une des revendications précédentes, caractérisé en ce que chaque dispositif de verrouillage (6) comprend plusieurs verrous disposés symétriquement au plan médian longitudinal d'une travure (1), les axes de verrouillage respectivement des verrous (6) étant coaxiaux.7. System according to one of the preceding claims, characterized in that each locking device (6) comprises several locks arranged symmetrically to the longitudinal median plane of a span (1), the locking axes of the locks (6) respectively being coaxial. 8. Système selon l'une des revendications précédentes, caractérisé en ce que chaque bec (4) est verrouillé en position rabattue par deux moyens de verrouillage latéraux (26) comprenant chacun un bras de levier pivotant (27) à crochet de verrouillage (29) dans lequel s'engage un axe de verrouillage transversal (30) solidaire de l'extrémité libre du bec (4).8. System according to one of the preceding claims, characterized in that each spout (4) is locked in the folded position by two lateral locking means (26) each comprising a pivoting lever arm (27) with locking hook (29 ) in which engages a transverse locking pin (30) integral with the free end of the spout (4). 9. Système selon l'une des revendications précédentes, caractérisé en ce qu'il comprend au moins un levier latéral (15) de manoeuvre de crochets de verrouillage (6b) respectivement de verrous (6) à chaque extrémité d'une travure (1) entre une position de verrouillage et une position de déverrouillage d'axes du verrouillage correspondants (6a), et au moins un organe de maintien (18) des crochets de verrouillage (6b) à la position de verrouillage ou de déverrouillage.9. System according to one of the preceding claims, characterized in that it comprises at least one lateral lever (15) for operating locking hooks (6b) and respectively locks (6) at each end of a span (1 ) between a locking position and an unlocking position of corresponding locking pins (6a), and at least one member (18) for holding the locking hooks (6b) in the locking or unlocking position. 10. Système selon la revendication 9, caractérisé en ce que l'organe de maintien (18) comprend un ressort de compression précontraint (24) monté pivotant à ses deux extrémités, par l'intermédiaire d'étriers d'articulation (19, 20), respectivement à la structure porteuse (2) ou au bec associé (4) et à un crochet de verrouillage (6b).10. System according to claim 9, characterized in that the holding member (18) comprises a prestressed compression spring (24) pivotally mounted at its two ends, by means of articulation stirrups (19, 20 ), respectively to the supporting structure (2) or to the associated spout (4) and to a locking hook (6b). 11. Système selon la revendication 9 ou 10, caractérisé en ce qu'il comprend deux leviers de manoeuvre (15) respectivement de deux paires de crochets de verrouillage (6b), chaque levier (15) entrainant un bras de liaison (16) de deux crochets de verrouillage (6b).11. System according to claim 9 or 10, characterized in that it comprises two operating levers (15) respectively of two pairs of locking hooks (6b), each lever (15) driving a link arm (16) of two locking hooks (6b). 12. Système selon l'une des revendications précédentes, caractérisé en ce que chaque travure (1) comprend à l'une de ses extrémités un pied de positionnement (24) et à son extrémité opposée une ouverture de positionnement (25), le pied de positionnement (24) d'une travure (1) s'engageant dans l'ouverture de positionnement correspondante (25) d'une autre travure (1) pour leurs positionnements mutuels, l'assemblage pied (24) - ouverture (25) de positionnement reprenant les efforts de cisaillement résultant du passage de véhicules sur les voies de roulement des deux travures (1) accouplées bout à bout.12. System according to one of the preceding claims, characterized in that each span (1) comprises at one of its ends a positioning foot (24) and at its opposite end a positioning opening (25), the foot positioning (24) of a span (1) engaging in the corresponding positioning opening (25) of another span (1) for their mutual positioning, the assembly of the foot (24) - opening (25) positioning taking up the shearing forces resulting from the passage of vehicles on the tracks of the two spans (1) coupled end to end. 13. Système selon la revendication 12, caractérisé en ce que le pied de positionnement (24) précité est en forme de pyramide.13. System according to claim 12, characterized in that the aforementioned positioning foot (24) is in the form of a pyramid. 14. Système selon la revendication 12 ou 13, caractérisé en ce que le pied de positionnement (24) est solidaire de la face frontale (2e) de la structure porteuse (2) d'une travure (1) et l'ouverture de positionnement (25) est réalisée dans la face frontale opposée (2e) de la structure porteuse (2) de la travure (1).14. System according to claim 12 or 13, characterized in that the positioning foot (24) is integral with the front face (2e) of the support structure (2) of a span (1) and the positioning opening (25) is produced in the opposite front face (2e) of the supporting structure (2) of the span (1). 15. Système selon l'une des revendications précédentes, caractérisé en ce que les premiers moyens (6a) des verrous (6) à l'extrémité d'une travure sont situés au niveau supérieur de la face frontale (4e) du bec associé (4) rabattu sur la structure porteuse (2) tandis que les seconds moyens (6b) de ces verrous (6) sont situés au niveau inférieur de la face frontale (2e) de la structure porteuse (2), et en ce que les seconds moyens (6b) des verrous (6) à l'extrémité opposée de la travure (1) sont situés au niveau supérieur de la face frontale (4e) de l'autre bec associé (4) rabattu sur la structure porteuse (2) tandis que les premiers moyens (6a) de ces verrous sont situés au niveau inférieur de la face frontale (2e) de la structure porteuse (2).15. System according to one of the preceding claims, characterized in that the first means (6a) of the latches (6) at the end of a span are located at the upper level of the front face (4th) of the associated spout ( 4) folded over the supporting structure (2) while the second means (6b) of these latches (6) are located at the lower level of the front face (2e) of the supporting structure (2), and in that the second means (6b) of the latches (6) at the opposite end of the span (1) are located at the level upper face (4e) of the other associated spout (4) folded over the supporting structure (2) while the first means (6a) of these latches are located at the lower level of the front face (2e) of the supporting structure (2). 16. Système selon l'une des revendications précédentes, caractérisé en ce que le pied de positionnement (24) précité est situé au-dessus des premiers (6a) ou des seconds (6b) moyens des verrous (6) selon l'extrémité de la travure à laquelle il est solidaire et symétriquement au plan médian longitudinal précité.16. System according to one of the preceding claims, characterized in that the aforementioned positioning foot (24) is located above the first (6a) or second (6b) means of the latches (6) according to the end of the span to which it is integral and symmetrically to the aforementioned longitudinal median plane. 17. Système selon l'une des revendications précédentes, caractérisé en ce que l'axe de pivotement (5) précité est formé par plusieurs parties en forme de chape (7) solidaires de la structure porteuse (2) et une partie centrale (7b) montée pivotante entre deux branches (7a) de chaque chape (7) et solidaire du bec (4).17. System according to one of the preceding claims, characterized in that the aforementioned pivot axis (5) is formed by several parts in the form of a yoke (7) integral with the support structure (2) and a central part (7b ) pivotally mounted between two branches (7a) of each yoke (7) and integral with the spout (4). 18. Système selon l'une des revendications précédentes, caractérisé en ce que la face frontale (4e) de l'un des deux becs rabattus (4) d'une travure (1) comprend une ouverture (26) permettant le libre passage à travers la face frontale (4e) du pied de positionnement sous-jacent (24) lors du déploiement du bec (4).18. System according to one of the preceding claims, characterized in that the front face (4e) of one of the two folded spouts (4) of a span (1) comprises an opening (26) allowing free passage to through the front face (4e) of the underlying positioning foot (24) when the spout (4) is deployed. 19. Système selon l'une des revendications précédentes, caractérisé en ce que chaque bec (4) présente une forme générale en pyramide à section transversale rectangulaire dont deux faces opposées (4a, 4b) sont destinées à servir de voies de roulement respectivement aux positions rabattue et déployée du bec (4) qui est articulé autour de l'axe d'articulation (5) précité par un côté transversal (4c) de la base rectangulaire du bec (4).19. System according to one of the preceding claims, characterized in that each spout (4) has a general pyramid shape with rectangular cross section of which two opposite faces (4a, 4b) are intended to serve as rolling tracks respectively at the positions folded down and deployed from the spout (4) which is articulated around the articulation axis (5) mentioned above by a transverse side (4c) of the rectangular base of the spout (4). 20. Système selon l'une des revendications précédentes, caractérisé en ce que chaque bec (4) comprend deux parois latérales formant guide-roues (4f, 4g) en position rabattue du bec (4) sur la structure porteuse (2) et escamotables en position déployée du bec (4) sur le sol.20. System according to one of the preceding claims, characterized in that each spout (4) comprises two side walls forming wheel guides (4f, 4g) in the folded position of the spout (4) on the support structure (2) and retractable in the deployed position of the spout (4) on the ground. 21. Système selon l'une des revendications précédentes, caractérisé en ce que chaque paroi latérale formant guide-roues (4f, 4g) coulisse librement parallèlement à la face latérale correspondante du bec associé (4) de façon à occuper la position escamotée lorsque le bec (4) est déployé et une position fixe de service lorsque le bec (4) est rabattu sur la structure porteuse (2).21. System according to one of the preceding claims, characterized in that each side wall forming wheel guide (4f, 4g) slides freely parallel to the corresponding side face of the associated spout (4) so as to occupy the retracted position when the spout (4) is deployed and a fixed service position when the spout (4) is folded down on the supporting structure (2). 22. Système selon la revendication 21, caractérisé en ce qu'en position fixe précitée, chaque paroi latérale (4f, 4g) est en appui par gravité sur une paroi latérale sous-jacente (2h, 2i) solidaire de la structure porteuse (2) et formant guide-roues en position déployée du bec (4).22. System according to claim 21, characterized in that in the aforementioned fixed position, each side wall (4f, 4g) is in abutment by gravity on an underlying side wall (2h, 2i) integral with the carrying structure (2 ) and forming wheel guide in the deployed position of the spout (4). 23. Système selon l'une des revendications précédentes, caractérisé en ce qu'il comprend au moins deux blocs (11) solidaires respectivement du côté transversal (4c) d'un bec (4) et de l'extrémité de la structure porteuse (2) et disposés respectivement au-dessus et en dessous d'une chape d'articulation (7) précitée de façon que deux surfaces d'appui (10) respectivement des deux blocs (11) viennent en aboutement en position déployée du bec (4) afin de reprendre des efforts appliqués à l'axe d'articulation (5) notamment lors du passage de véhicules sur la travure (1).23. System according to one of the preceding claims, characterized in that it comprises at least two blocks (11) secured respectively to the transverse side (4c) of a spout (4) and to the end of the support structure ( 2) and arranged respectively above and below a joint clevis (7) above so that two bearing surfaces (10) respectively of the two blocks (11) abut in the deployed position of the spout (4 ) in order to take up the forces applied to the hinge pin (5) in particular when passing vehicles over the span (1). 24. Système selon l'une des revendications précédentes, caractérisé en ce que chaque travure (1) comprend deux structures porteuses identiques parallèles (2) reliées rigidement entre elles par des bras transversaux (3).24. System according to one of the preceding claims, characterized in that each span (1) comprises two identical parallel supporting structures (2) connected rigidly between them by transverse arms (3). 25. Système selon l'une des revendications précédentes, caractérisé en ce que les deux structures porteuses (2) d'une travure (1) sont disposées symétriquement à un plan médian longitudinal de façon qu'aux premiers (6a) et seconds (6b) moyens des verrous (6) d'une extrémité d'une structure porteuse (2) et d'un bec rabattu (4) correspondent respectivement les seconds (6b) et premiers (6a) moyens de verrous (6) de l'extrémité du même côté de l'autre structure porteuse (2) et du bec rabattu associé (4) et qu'à un pied de positionnement (24) à l'extrémité d'une structure porteuse (2) corresponde une ouverture de positionnement (25) à l'extrémité du même côté de l'autre structure porteuse (2).25. System according to one of the preceding claims, characterized in that the two supporting structures (2) of a span (1) are arranged symmetrically to a longitudinal median plane so that at the first (6a) and second (6b) ) means of the latches (6) of one end of a carrying structure (2) and of a folded spout (4) correspond respectively to the second (6b) and first (6a) means of latches (6) to the end on the same side of the other supporting structure (2) and of the associated folded spout (4) and that at a positioning foot (24) at the end of a supporting structure (2) corresponds a positioning opening (25 ) at the end of the same side of the other supporting structure (2).
EP90401873A 1989-07-06 1990-06-28 Bridging system enabling vehicles to bridge gaps Expired - Lifetime EP0407274B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90401873T ATE87683T1 (en) 1989-07-06 1990-06-28 BRIDGE SYSTEM FOR OVERCOMING DITCHES BY VEHICLES.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8909133A FR2649426B1 (en) 1989-07-06 1989-07-06 BRIDGE SYSTEM FOR VEHICLES TO CROSS BRACES
FR8909133 1989-07-06

Publications (2)

Publication Number Publication Date
EP0407274A1 true EP0407274A1 (en) 1991-01-09
EP0407274B1 EP0407274B1 (en) 1993-03-31

Family

ID=9383556

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90401873A Expired - Lifetime EP0407274B1 (en) 1989-07-06 1990-06-28 Bridging system enabling vehicles to bridge gaps

Country Status (6)

Country Link
US (1) US5033145A (en)
EP (1) EP0407274B1 (en)
AT (1) ATE87683T1 (en)
DE (1) DE69001213T2 (en)
FR (1) FR2649426B1 (en)
HK (1) HK1002710A1 (en)

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EP0562338A1 (en) * 1992-03-23 1993-09-29 Krupp Fördertechnik GmbH Portable bridge
US5363527A (en) * 1991-11-15 1994-11-15 Constructions Industrielles De La Mediterranee Cnim Spanning beam structure for clearing breaches by vehicles
EP0711873A3 (en) * 1994-11-08 1996-11-13 Krupp Foerdertechnik Gmbh Automatic coupling device for transportable and dismountable bridges

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RU2723423C1 (en) * 2019-07-30 2020-06-11 Федеральное государственное бюджетное учреждение "Центральный научно-исследовательский испытательный институт инженерных войск" Министерства обороны Российской Федерации Guide beam end section with abutment

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Also Published As

Publication number Publication date
DE69001213T2 (en) 1993-10-21
FR2649426B1 (en) 1992-03-20
HK1002710A1 (en) 1998-09-11
DE69001213D1 (en) 1993-05-06
US5033145A (en) 1991-07-23
EP0407274B1 (en) 1993-03-31
FR2649426A1 (en) 1991-01-11
ATE87683T1 (en) 1993-04-15

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