EP0386209A1 - Self-propelled machine for the concreting of ditches. - Google Patents

Self-propelled machine for the concreting of ditches.

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Publication number
EP0386209A1
EP0386209A1 EP89909781A EP89909781A EP0386209A1 EP 0386209 A1 EP0386209 A1 EP 0386209A1 EP 89909781 A EP89909781 A EP 89909781A EP 89909781 A EP89909781 A EP 89909781A EP 0386209 A1 EP0386209 A1 EP 0386209A1
Authority
EP
European Patent Office
Prior art keywords
ditch
concrete
machine
machine according
edges
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
EP89909781A
Other languages
German (de)
French (fr)
Other versions
EP0386209B1 (en
Inventor
Pierre Merville
Jacques Merville
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.)
ENTREPRISE MERVILLE PIERRE
MERVILLE PIERRE ENTREPRISE
Original Assignee
ENTREPRISE MERVILLE PIERRE
MERVILLE PIERRE ENTREPRISE
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ENTREPRISE MERVILLE PIERRE, MERVILLE PIERRE ENTREPRISE filed Critical ENTREPRISE MERVILLE PIERRE
Publication of EP0386209A1 publication Critical patent/EP0386209A1/en
Application granted granted Critical
Publication of EP0386209B1 publication Critical patent/EP0386209B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B5/00—Artificial water canals, e.g. irrigation canals
    • E02B5/02—Making or lining canals
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
    • E01C19/48—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for laying-down the materials and consolidating them, or finishing the surface, e.g. slip forms therefor, forming kerbs or gutters in a continuous operation in situ
    • E01C19/4886—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for laying-down the materials and consolidating them, or finishing the surface, e.g. slip forms therefor, forming kerbs or gutters in a continuous operation in situ for forming in a continuous operation kerbs, gutters, berms, safety kerbs, median barriers or like structures in situ, e.g. by slip-forming, by extrusion
    • E01C19/4893—Apparatus designed for railless operation

Definitions

  • the present invention relates to a self-propelled machine for concreting ditches, of the type comprising a propulsion unit driving means for moving the machine and a system for spreading a layer of concrete on the bottom and on the edges of the ditch as and as the machine advances.
  • Machines of the aforementioned type have been designed for automatically concreting such ditches.
  • These self-propelled machines span the ditch and have means of movement, such as wheels or tracks, which bear and roll on either side of the ditch.
  • the importance of these development works varies according to the nature and the slope of the land. In general, these machines are very operational in flat or gently sloping terrain and sufficiently clear, but their use is made practically impossible in steep terrain and difficult to access.
  • these machines were especially designed for carrying out large-scale works, in particular for the concreting of wide and deep ditches.
  • the object of the invention lies in the production of a self-propelled machine which is particularly suitable for the concreting of small ditches of small width, and which is usable in hilly terrain and possibly difficult to access.
  • the invention provides a machine for concreting ditches which is characterized by the fact that its means of movement bear and roll on the bottom of the ditch.
  • the means for moving the machine consist of at least one track which advances on the bottom of the pit.
  • the spreading system located towards the rear of the machine, is pulled by the track, in particular by resting on the layer of concrete which has just been deposited at the rear of the machine.
  • the spreading system essentially comprises a concrete storage hopper, an endless screw in the bottom of the hopper for conveying the concrete in a formwork conforming to the shape of the ditch, this formwork comprising a lower opening facing the bottom of the pit and by which the concrete falls by gravity to form the bottom concrete layer, this lower opening being extended by two lateral openings located opposite the edges of the ditch and through which the concrete is sprayed, by means of fins driven in rotation by the auger, to form the lateral concrete layers.
  • the spreading system is completed by compression means, such as a trapezoidal section plate which simultaneously compresses the layers of concrete deposited on the bottom and on the edges of the ditch, this plate serving also a support surface for the spreading system during the advance of the machine.
  • compression means such as a trapezoidal section plate which simultaneously compresses the layers of concrete deposited on the bottom and on the edges of the ditch, this plate serving also a support surface for the spreading system during the advance of the machine.
  • the machine bearing only on the bottom of the ditch, makes it possible to do away with all the development work around the pit, which until then had been necessary for moving the previous machines. It is thus possible to reduce the time and cost of making a concrete ditch.
  • the machine guided by the track can follow any route, in particular with a steep slope and in rough terrain.
  • the machine is compact and of small dimensions, which facilitates its transport to the sites of use.
  • FIG. 1 is a schematic perspective view of the machine according to the invention
  • FIG. 2 is a simplified longitudinal section view of the machine according to the invention
  • FIG. 3 is a simplified view of the formwork of the concrete spreading system
  • FIG. 4 is a schematic view of the principle of adjusting the thickness of the layer of concrete deposited
  • FIG. 5 is a simplified view of the rear of the machine to show the means of compression of the concrete layers deposited in the ditch.
  • the machine 1 according to the invention is shown in its working position inside a ditch F with trapezoidal section, having a substantially flat bottom FF and two inclined side edges BF.
  • the double arrow F1 indicates the part of the ditch already concreted at the rear of the machine 1
  • the double arrow F2 indicates the part of the ditch being concreted by the machine 1
  • the double arrow F3 indicates the part ditch not yet concreted at the front of the machine 1.
  • the machine 1 comprises a propulsion group 2 associated with displacement means 3 such as a track which is supported and rolls on the bottom FF of the ditch F, a spreading system 4 concrete, a compression and smoothing system 5 of the layers of concrete deposited in the bottom and on the edges of the ditch F, and a cockpit and control 6.
  • displacement means 3 such as a track which is supported and rolls on the bottom FF of the ditch F
  • spreading system 4 concrete such as a track which is supported and rolls on the bottom FF of the ditch F
  • a compression and smoothing system 5 of the layers of concrete deposited in the bottom and on the edges of the ditch F
  • cockpit and control 6 such as a cockpit and control 6.
  • the propulsion unit 2 comprises an engine Ml mounted on a chassis la. supported by the track 3 towards the front thereof.
  • This motor M1 drives the track 3 via a geared motor and a transmission known per se and not shown.
  • the propulsion unit also includes a hydraulic pump P1 actuated by the motor M1 and whose role will be explained below.
  • Other accessories such as the fluid reservoir necessary for the operation of the pump and the batteries have been intentionally omitted for the sake of clarification, as well as the connection circuits known per se.
  • Two pads 7 are located on either side of the track 3 and towards the front of the latter.
  • Each shoe 7 is articulated at the end of a link 7a, the other end of which is fixed to the frame 1a.
  • Each pad 7 is controlled by means of a jack 8 mounted in an inclined position so that its piston rod can bring the pad 7 to bear on the edge BF adjacent to the ditch F.
  • These retractable pads 7, controlled separately from the cockpit 6, each act to modify the direction of advance of the track 3.
  • the jacks 6 are supplied from the pump P1.
  • the spreading system 4 comprises a concrete storage hopper 10 which is placed above the track 3 at the rear of the propulsion unit 2.
  • the hopper 10 ends at its rear end, beyond the rear end of the track 3, by a formwork 11, with a trapezoidal cross section, which extends, on the one hand, laterally on either side of the hopper 10 in the direction of the edges BF of the ditch F and, on the other hand, vertically towards the bottom FF of the pit F.
  • the formwork 11 has a lower central opening 12 situated opposite the bottom FF of the ditch F.
  • This opening 12 is delimited by the horizontal lower edges 13a, 14a, of two vertical front 13 and rear 14 walls, parallel, spaced and extending perpendicular to the longitudinal axis of the machine 1.
  • These lower edges 13a, 14a are extend over a length substantially corresponding to the width of the bottom FF of the ditch F and are located at a height h thereof.
  • the formwork 11 also has two lateral openings 15 which laterally extend the central opening 12. Each lateral opening 15 extends in width between the two front 13 and rear 14 walls, and in height over a length corresponding substantially to the height of the edge lateral adjacent BF of the concrete pit.
  • Each lateral opening 15 is situated in a plane substantially parallel to the edge BF of the adjacent ditch and at a distance from it defined by the inclined edges 13b, 14b of the two front plates 13 and rear 14, which are separated by a distance d of the edge BF of the ditch F.
  • Each lateral opening 15 is associated with a flap 15a mounted sliding in the plane of the opening 15 to modify its cross-section according to the concreting height of the edge BF adjacent to the ditch F, as shown diagrammatically in Figure 3.
  • the concrete poured and stored in the hopper 10 is conveyed in the formwork 11 by means of an endless screw 20 situated in the bottom of the hopper 7 and extending along the axis of the machine 1.
  • This endless screw 20 is rotatably supported at its two ends by two bearings 21a, 21b fixed to the two transverse end walls of the hopper 10.
  • the worm 20 passes through the rear end wall 14 of the formwork 11 to be driven in rotation by an auxiliary hydraulic motor M2 supplied from the pump P1.
  • the endless screw 20 rotatably supports two fins 22 which mix the concrete to project it laterally on the edges BF of the pit F through the lateral openings 15.
  • the formwork 11 being open at its upper part corresponding to the rear part of the hopper 10, a deflector 24 is provided. to prevent the concrete stirred by the fins 22 from being ejected outside the formwork 11 ( Figure 1).
  • the compression and smoothing system 5, FIGS. 1 and 5, is formed by a plate 25 of trapezoidal section slightly inclined from the front towards the rear.
  • This plate 25 is fixed, by one end or front end, to the base of the rear wall 14 of the formwork 11.
  • the distance separating the rear edge of this plate 25 from the ditch F fixes the thicknesses of the concrete layers on the bottom FF and on the lateral edges BF of the ditch F.
  • the plate 25 comprises a central part 25a facing the bottom FF of the ditch and two inclined lateral parts 25b parallel to the edges BF of the ditch F.
  • the inclined parts 25b. end with a 25s ledge. towards an edge of the adjacent BF ditch.
  • This plate 25 is extended by a smoothing plate 26 for the layers of concrete and having the same trapezoidal section as the compression plate 25.
  • the previously described spreading system 4 rests on a substantially horizontal chassis 1b supported by the track 3.
  • This chassis 1b, FIG. 4 supports a stirrup 30 mounted to pivot about a horizontal axis 31 perpendicular to the longitudinal axis of the machine 1.
  • This stirrup 30 is extended by a vertical rod 32 on which is fixed, by fasteners symbolized at 33, the front end surface of the hopper 10 to ensure the traction of the spreading system by the track 3.
  • the structure of the machine 1 is completed by adjustment devices, on the one hand, for the thickness of the concrete layers and, on the other hand, for the stability of the spreading system.
  • the device 40 for adjusting the thickness of the concrete layers is formed, in the example considered here. by two blades 41, 42 facing each other and respectively supported by the frame 1b and the base of the hopper 10. These blades extend perpendicular to the longitudinal axis of the machine 1 and are located towards the rear part of the track 3. Screws 43, situated towards the two ends of these blades 41, 42 pass through a blade to bear on the other blade in order to separate them from each other, causing a pivoting movement of the spreading system 4 forward around the axis of rotation 31 located at the front of the track 3.
  • the height h defining the thickness of the layer deposited on the bottom FF of the ditch F and the distance d defining the thickness of the layers of concrete on the edges BF of ditch F are minimal. Any spacing between the blades 41, 42 therefore causes an increase in height h. and the distance d. Generally, this adjustment device only plays on a few centimeters.
  • the device for adjusting the stability of the spreading system 4 comprises two retractable lateral pads 51 arranged on either side of the track 3, towards the rear of the latter.
  • Each shoe 51 is articulated at the end of a link 51a. the other end of which is articulated to the chassis lfc., and is controlled to move by means of a jack 52 mounted in an inclined position so as to temporarily apply the pad 51 associated on the edge BF adjacent to the ditch F.
  • the jacks 52 are ordered separately from cockpit 6 and supplied from pump P1.
  • the entire spreading system 4 can pivot around the longitudinal axis of the machine 1, thanks to the clearance which is provided at its anchoring with the rod 32 secured to the chassis 1b carried by the track 3 (FIG. 4).
  • the cockpit 6 comprises a set of levers 60 (FIG. 1), in particular those for controlling the motors Ml for driving the track 3 and M2 for rotation of the worm 20, the cylinders 8 for moving the steering pads 7, and the cylinders 52 for moving the stability pads 51.
  • the person responsible for actuating these various controls mounts on a horizontal base 61 fixed on the top of the compression plate 25 for example ( figure 5).
  • a horizontal auxiliary base 62, below the base 61, is fixed on the top of the smoothing plate 26 to allow a second person to monitor the operations and possibly perfect with a manual tool the imperfections of the smoothing of the layers of concrete.
  • the operation of the machine 1 previously described easily follows from the structure of this machine.
  • the machine 1 moves by its track 3 on the bottom FF of the ditch F.
  • the concrete previously spilled and stored in the hopper 10 is driven by the worm 20 inside the formwork 11.
  • the concrete falls directly by gravity by the central lower opening 12 on the bottom FF of the ditch F.
  • the fins 22, driven in rotation by the worm 20, stir the concrete and eject it through the lateral openings 15 on the edges BF of the ditch F.
  • the concrete thus deposited in a coarse thickness at the outlet of the formwork 11 is reduced to a thickness close to h in the bottom FF of the ditch F and to a thickness close to d on the edges BF, as the machine 1 advances, via the rear wall 14 of the formwork 11.
  • this wall 14 forms a stop which limits the deposition of the concrete in the space between the ditch F and the compression plate 25.
  • the thicknesses of the layers b1, b2 correspond to the values defined by h and d, these being generally substantially equal.
  • the steering shoe 7, located outside the radius of curvature, is controlled in movement to come to bear on the adjacent edge BF to modify the direction of the track 3 accordingly.
  • the pad 7 comes to bear on the edge BF of the pit depends on the radius of curvature of the ditch F and on the speed of advance of the machine 1.
  • the stability pads 51 come or not bear on the adjacent edges BF of ditch F along the bottom profile FF of ditch F, in order to maintain the spreading system substantially in the axis of ditch F and to obtain substantially constant thicknesses of concrete layers.
  • the machine as described can obviously be used for concreting irrigation canals, that is to say that its field of application is not limited only to ditches bordering roads or motorways.
  • the components of the machine described by way of example can be replaced by means equivalent to the scope of the skilled person.
  • the displacement system 3 can be constituted by two articulated and guiding tracks, mounted one behind the other, which makes it possible to remove the steering pads 7.
  • the spreading system can be completed by two screws without additional end, housed inside the formwork 11, and which allow the concrete to be raised so that it is deposited in sufficient quantity on the edges BF of the ditch F, in particular when these edges must be concreted over a significant height.
  • the screws 43 which are used to adjust the thickness of the concrete layers can be replaced by hydraulic cylinders.
  • a wire mesh forming a reinforcement can be previously unwound on the bottom and on the edges of the ditch F, then embedded in the layers of concrete deposited by the machine to make reinforced concrete ditches. Finally, such a machine can also be remotely controlled or remotely controlled, according to known techniques already used for public works vehicles.

Abstract

PCT No. PCT/FR89/00427 Sec. 371 Date Apr. 25, 1990 Sec. 102(e) Date Apr. 25, 1990 PCT Filed Aug. 23, 1989 PCT Pub. No. WO90/02227 PCT Pub. Date Mar. 8, 1990.A self-propelled machine for concreting a ditch includes a caterpillar band which contacts and rolls on the bottom of the ditch, a propulsion unit for driving the displacement belt, and a spreading system for spreading concrete on the bottom and sides of the ditch.

Description

MACHINE AUTOPROPULSEE POUR BETONNER DES FOSSES  SELF-PROPELLED MACHINE FOR CONCRETING PITCHES
La présente invention concerne une machine autopropulsée pour bétonner des fossés, du type comprenant un groupe de propulsion entraînant des moyens de déplacement de la machine et un système d'epandage d'une couche de béton sur le fond et sur les bords du fossé au fur et à mesure de l'avance de la machine . The present invention relates to a self-propelled machine for concreting ditches, of the type comprising a propulsion unit driving means for moving the machine and a system for spreading a layer of concrete on the bottom and on the edges of the ditch as and as the machine advances.
Dans le domaine des travaux publics, on est conduit à creuser des fossés de drainage, notamment de part et d'autre des routes et autoroutes . Certains de ces fossés sont ensuite bétonnés pour faciliter l'écoulement des eaux et pour éviter qu'ils ne soient ravinés par les eaux de pluie et envahis par la végétation.  In the field of public works, we are led to dig drainage ditches, especially on both sides of roads and highways. Some of these ditches are then concreted to facilitate the flow of water and to prevent them from being gullied by rainwater and invaded by vegetation.
Des machines du type précité ont été conçues pour bétonner de façon automatique de tels fossés . Ces machines autopropulsées enjambent le fossé et possèdent des moyens de déplacement, tels des roues ou des chenilles, qui prennent appui et roulent de part et d'autre du fossé. En plus du fossé à creuser, il est donc nécessaire de dégager ses abords pour y aménager des chemins de roulement qui doivent être nivelés sensiblement parallèlement au fond du fossé. L'importance de ces travaux d'aménagement varie suivant la nature et la pente du terrain. D'une manière générale, ces machines sont très opérationnelles en terrain plat ou à faible pente et suffisamment dégagé, mais leur utilisation est rendue pratiquement impossible en terrain a forte pente et difficile d'accès. En outre, ces machines ont surtout été conçues pour la réalisation de grands travaux , en particulier pour le bétonnage de fossés larges et profonds. Le but de l'invention réside dans la réalisation d' une machine autopropulsée qui soit particulièrement adaptée pour le bétonnage de petits fossés de faible largeur, et qui soit utilisable dans des terrains vallonnés et éventuellement difficiles d'accès. Machines of the aforementioned type have been designed for automatically concreting such ditches. These self-propelled machines span the ditch and have means of movement, such as wheels or tracks, which bear and roll on either side of the ditch. In addition to the ditch to be dug, it is therefore necessary to clear its surroundings in order to arrange raceways which must be leveled substantially parallel to the bottom of the ditch. The importance of these development works varies according to the nature and the slope of the land. In general, these machines are very operational in flat or gently sloping terrain and sufficiently clear, but their use is made practically impossible in steep terrain and difficult to access. In addition, these machines were especially designed for carrying out large-scale works, in particular for the concreting of wide and deep ditches. The object of the invention lies in the production of a self-propelled machine which is particularly suitable for the concreting of small ditches of small width, and which is usable in hilly terrain and possibly difficult to access.
A cet effet, l'invention propose une machine pour bétonner des fossés qui se caractérise par le fait que ses moyens de déplacement prennent appui et roulent sur le fond du fossé .  To this end, the invention provides a machine for concreting ditches which is characterized by the fact that its means of movement bear and roll on the bottom of the ditch.
Selon un mode préférentiel de réalisation, les moyens de déplacement de la machine sont constitués par au moins une chenille qui avance sur le fond du fosse.  According to a preferred embodiment, the means for moving the machine consist of at least one track which advances on the bottom of the pit.
Selon une autre disposition de l'invention, le système d'épandage, situé vers l'arrière de la machine, est tiré par la chenille en prenant notamment appui sur la couche de béton qui vient d'être déposée à l'arrière de la machine .  According to another arrangement of the invention, the spreading system, located towards the rear of the machine, is pulled by the track, in particular by resting on the layer of concrete which has just been deposited at the rear of the machine.
Le système d'épandage comprend essentiellement une trémie de stockage du béton, une vis sans fin dans le fond de la trémie pour acheminer le béton dans un coffrage épousant la forme du fossé, ce coffrage comprenant une ouverture inférieure en regard du fond du fosse et par laquelle le béton tombe par gravité pour former la couche de béton de fond, cette ouverture inférieure étant prolongée par deux ouvertures latérales situées en regard des bords du fossé et par lesquelles le béton est projeté, au moyen d'ailettes entraînées à rotation par la vis sans fin, pour former les couches de béton latérales .  The spreading system essentially comprises a concrete storage hopper, an endless screw in the bottom of the hopper for conveying the concrete in a formwork conforming to the shape of the ditch, this formwork comprising a lower opening facing the bottom of the pit and by which the concrete falls by gravity to form the bottom concrete layer, this lower opening being extended by two lateral openings located opposite the edges of the ditch and through which the concrete is sprayed, by means of fins driven in rotation by the auger, to form the lateral concrete layers.
Le système d'épandage est complété par des moyens de compression, tels une plaque a section trapézoïdale qui comprime simultanement les couches de béton déposées sur le fond et sur les bords du fossé, cette plaque servant également de surface d'appui pour le système d'èpandage au cours de l'avance de la machine. The spreading system is completed by compression means, such as a trapezoidal section plate which simultaneously compresses the layers of concrete deposited on the bottom and on the edges of the ditch, this plate serving also a support surface for the spreading system during the advance of the machine.
Selon un avantage important de l'invention, la machine en ne prenant appui que sur le fond du fossé permet de supprimer tous les travaux d'aménagement des abords du fosse Jusque-là nécessaires pour le déplacement des machines antérieures. Il est ainsi possible de réduire les temps et les coûts de réalisation d'un fossé bétonné.  According to an important advantage of the invention, the machine, bearing only on the bottom of the ditch, makes it possible to do away with all the development work around the pit, which until then had been necessary for moving the previous machines. It is thus possible to reduce the time and cost of making a concrete ditch.
Selon un autre avantage de l'invention, la machine guidée par la chenille peut suivre un tracé quelconque , en particulier à forte pente et dans des terrains accidentés.  According to another advantage of the invention, the machine guided by the track can follow any route, in particular with a steep slope and in rough terrain.
Selon encore un autre avantage de l'invention , la machine est compacte et de petites dimensions, ce qui facilite son transport sur les sites d'utilisation.  According to yet another advantage of the invention, the machine is compact and of small dimensions, which facilitates its transport to the sites of use.
D'autres avantages , caractéristiques et détails de l'invention ressortiront de la description explicative qui va suivre faite en référence aux dessins annexés donnés uniquement à titre d'exemple et dans lesquels :  Other advantages, characteristics and details of the invention will emerge from the explanatory description which follows, given with reference to the appended drawings given solely by way of example and in which:
- la figure 1 est une vue en perspective schématique de la machine conforme à l'invention ,  FIG. 1 is a schematic perspective view of the machine according to the invention,
la figure 2 est une vue en coupe longitudinale simplifiée de la machine conforme à l'invention,  FIG. 2 is a simplified longitudinal section view of the machine according to the invention,
- la figure 3 est une vue simplifiée dud coffrage du système d'èpandage du béton, FIG. 3 is a simplified view of the formwork of the concrete spreading system,
- la figure 4 est une vue schématique de principe du réglage de l'épaisseur de la couche de béton déposée,  FIG. 4 is a schematic view of the principle of adjusting the thickness of the layer of concrete deposited,
- et la figure 5 est une vue simplifiée de l'arrière de la machine pour montrer les moyens de compression des couches de béton déposées dans le fossé. Sur la figure 1, la machine 1 conforme à l'invention est représentée dans sa position de travail a l'intérieur d'un fossé F à section trapézoïdale, présentant un fond FF sensiblement plat et deux bords latéraux inclinés BF . Sur cette figure, la double flèche F1 indique la partie du fossé déjà bétonnée à l'arrière de la machine 1, 1a double flèche F2 indique la partie du fossé en cours de bétonnage par la machine 1 , et la double flèche F3 indique la partie du fossé non encore bétonnée à l'avant de la machine 1. - And Figure 5 is a simplified view of the rear of the machine to show the means of compression of the concrete layers deposited in the ditch. In Figure 1, the machine 1 according to the invention is shown in its working position inside a ditch F with trapezoidal section, having a substantially flat bottom FF and two inclined side edges BF. In this figure, the double arrow F1 indicates the part of the ditch already concreted at the rear of the machine 1, the double arrow F2 indicates the part of the ditch being concreted by the machine 1, and the double arrow F3 indicates the part ditch not yet concreted at the front of the machine 1.
En se reportant également au schéma général de la figure 2, la machine 1 comprend un groupe de propulsion 2 associé a des moyens de déplacement 3 tels une chenille qui prend appui et roule sur le fond FF du fossé F, un système d'èpandage 4 du béton, un système de compression et de lissage 5 des couches de béton déposées dans le fond et sur les bords du fossé F, et un poste de pilotage et de commande 6.  Referring also to the general diagram of FIG. 2, the machine 1 comprises a propulsion group 2 associated with displacement means 3 such as a track which is supported and rolls on the bottom FF of the ditch F, a spreading system 4 concrete, a compression and smoothing system 5 of the layers of concrete deposited in the bottom and on the edges of the ditch F, and a cockpit and control 6.
Ces différents éléments constitutifs de la machine 1 vont être maintenant décrits en détail, et les prépositions "avant" et "arriéra" utilisées dans la description devront être considérées par rapport au sens de marche de la machine 1 à l'intérieur du fossé F.  These various constituent elements of the machine 1 will now be described in detail, and the prepositions "front" and "rear" used in the description will have to be considered with respect to the direction of travel of the machine 1 inside the ditch F.
Le groupe de propulsion 2 comprend un moteur Ml monté sur un châssis la. supporté par la chenille 3 vers l'avant de celle-ci . Ce moteur M1 entraîne la chenille 3 par l'intermédiaire d'un moto-réducteur et d'une transmission connus en soi et non représentés . Le groupe de propulsion comprend également une pompe hydraulique P1 actionnée par le moteur M1 et dont le rôle sera explicité plus loin. D'autres accessoires tels le réservoir de fluide nécessaire au fonctionnement de la pompe et des batteries ont été volontairement omis par souci de clarification, ainsi que les circuits de liaison connus en soi. The propulsion unit 2 comprises an engine Ml mounted on a chassis la. supported by the track 3 towards the front thereof. This motor M1 drives the track 3 via a geared motor and a transmission known per se and not shown. The propulsion unit also includes a hydraulic pump P1 actuated by the motor M1 and whose role will be explained below. Other accessories such as the fluid reservoir necessary for the operation of the pump and the batteries have been intentionally omitted for the sake of clarification, as well as the connection circuits known per se.
Deux patins 7 sont situés de part et d'autre de la chenille 3 et vers l'avant de celle-ci . Chaque patin 7 est articulé à l'extrémité d'une biellette 7a dont l'autre extrémité est fixée au châssis 1a. Chaque patin 7 est commandé par l'intermédiaire d'un vérin 8 monté dans une position inclinée de façon à ce que sa tige de piston puisse amener le patin 7 en appui sur le bord BF adjacent du fossé F . Ces patins rétractables 7 , commandés séparément depuis le poste de pilotage 6, agissent chacun pour modifier la direction d'avance de la chenille 3. Les vérins 6 sont alimentés à partir de la pompe P1.  Two pads 7 are located on either side of the track 3 and towards the front of the latter. Each shoe 7 is articulated at the end of a link 7a, the other end of which is fixed to the frame 1a. Each pad 7 is controlled by means of a jack 8 mounted in an inclined position so that its piston rod can bring the pad 7 to bear on the edge BF adjacent to the ditch F. These retractable pads 7, controlled separately from the cockpit 6, each act to modify the direction of advance of the track 3. The jacks 6 are supplied from the pump P1.
Le système d'èpandage 4 comprend une trémie 10 de stockage du béton qui est placée au-dessus de la chenille 3 à l'arrière du groupe de propulsion 2. La trémie 10 se termine à son extrémité arrière, au-delà de l'extrémité arrière de la chenille 3, par un coffrage 11, à section transversale trapézoïdale, qui s'étend, d'une part, latéralement de part et d'autre de la trémie 10 en direction des bords BF du fossé F et, d'autre part, verticalement en direction du fond FF du fosse F.  The spreading system 4 comprises a concrete storage hopper 10 which is placed above the track 3 at the rear of the propulsion unit 2. The hopper 10 ends at its rear end, beyond the rear end of the track 3, by a formwork 11, with a trapezoidal cross section, which extends, on the one hand, laterally on either side of the hopper 10 in the direction of the edges BF of the ditch F and, on the other hand, vertically towards the bottom FF of the pit F.
Le coffrage 11, en référence aux figures 1 et 3, présente une ouverture centrale inférieure 12 située en regard du fond FF du fossé F . Cette ouverture 12 est délimitée par les bords inférieurs horizontaux 13a , 14a, de deux parois verticales avant 13 et arrière 14, parallèles, espacées et s' étendant perpendiculairement à l'axe longitudinal de la machine 1. Ces bords inférieurs 13a , 14a s'étendent sur une longueur correspondant sensiblement à la largeur du fond FF du fossé F et sont situés à une hauteur h de celui-ci. Le coffrage 11 présente également deux ouvertures latérales 15 qui prolongent latéralement l'ouverture centrale 12. Chaque ouverture latérale 15 s'étend en largeur entre les deux parois avant 13 et arrière 14 , et en hauteur sur une longueur correspondant sensiblement à la hauteur du bord latéral adjacent BF du fosse à bétonner . Chaque ouverture latérale 15 est située dans un plan sensiblement parallèle au bord BF du fossé adjacent et à une distance de celui-ci définie par les bords inclinés 13b , 14b des deux plaques avant 13 et arrière 14, qui sont séparés d'une distance d du bord BF du fossé F. Chaque ouverture latérale 15 est associée à un volet 15a monté coulissant dans le plan de l'ouverture 15 pour modifier sa section de passage selon la hauteur de bétonnage du bord BF adjacent du fossé F, comme représenté schématiquement à la figure 3. The formwork 11, with reference to FIGS. 1 and 3, has a lower central opening 12 situated opposite the bottom FF of the ditch F. This opening 12 is delimited by the horizontal lower edges 13a, 14a, of two vertical front 13 and rear 14 walls, parallel, spaced and extending perpendicular to the longitudinal axis of the machine 1. These lower edges 13a, 14a are extend over a length substantially corresponding to the width of the bottom FF of the ditch F and are located at a height h thereof. The formwork 11 also has two lateral openings 15 which laterally extend the central opening 12. Each lateral opening 15 extends in width between the two front 13 and rear 14 walls, and in height over a length corresponding substantially to the height of the edge lateral adjacent BF of the concrete pit. Each lateral opening 15 is situated in a plane substantially parallel to the edge BF of the adjacent ditch and at a distance from it defined by the inclined edges 13b, 14b of the two front plates 13 and rear 14, which are separated by a distance d of the edge BF of the ditch F. Each lateral opening 15 is associated with a flap 15a mounted sliding in the plane of the opening 15 to modify its cross-section according to the concreting height of the edge BF adjacent to the ditch F, as shown diagrammatically in Figure 3.
Le béton déversé et stocké dans la trémie 10 est acheminé dans le coffrage 11 au moyen d'une vis sans fin 20 située dans le fond de la trémie 7 et s' étendant suivant l'axe de la machine 1. Cette vis sans fin 20 est supportée à rotation à ses deux extrémités par deux paliers 21a , 21b fixés aux deux parois transversales d'extrémité de la trémie 10 . A son extrémité arrière, la vis sans fin 20 traverse la paroi d'extrémité arrière 14 du coffrage 11 pour être entraînée en rotation par un moteur hydraulique auxiliaire M2 alimenté à partir de la pompe P1 . Au niveau du coffrage 11, la vis sans fin 20 supporte à rotation deux ailettes 22 qui brassent la béton pour le projeter latéralement sur les bords BF du fosse F par les ouvertures latérales 15 . Le coffrage 11 étant ouvert â sa partie supérieure correspondant à la partie arrière de la trémie 10, il est prévu un déflecteur 24 pour éviter que le béton brassé par les ailettes 22 ne soit éjecté à l'extérieur du coffrage 11 (figure 1) . The concrete poured and stored in the hopper 10 is conveyed in the formwork 11 by means of an endless screw 20 situated in the bottom of the hopper 7 and extending along the axis of the machine 1. This endless screw 20 is rotatably supported at its two ends by two bearings 21a, 21b fixed to the two transverse end walls of the hopper 10. At its rear end, the worm 20 passes through the rear end wall 14 of the formwork 11 to be driven in rotation by an auxiliary hydraulic motor M2 supplied from the pump P1. At the level of the formwork 11, the endless screw 20 rotatably supports two fins 22 which mix the concrete to project it laterally on the edges BF of the pit F through the lateral openings 15. The formwork 11 being open at its upper part corresponding to the rear part of the hopper 10, a deflector 24 is provided. to prevent the concrete stirred by the fins 22 from being ejected outside the formwork 11 (Figure 1).
Le système de compression et de lissage 5, figures 1 et 5, est formé par une plaque 25 de section trapézoïdale légèrement inclinée de l'avant vers l'arrière. Cette plaque 25 est fixée, par une extrémité ou extrémité avant , à la base de la paroi arrière 14 du coffrage 11. La distance séparant le bord arrière de cette plaque 25 du fossé F fixe les épaisseurs des couches de béton sur le fond FF et sur les bords latéraux BF du fossé F La plaque 25 comprend une partie centrale 25a en regard du fond FF du fossé et deux parties latérales inclinées 25b parallèles aux bords BF du fossé F. Les parties inclinées 25b. se terminent par un rebord 25s. en direction d'un bord du fossé BF adjacent . Cette plaque 25 est prolongée par une plaque de lissage 26 des couches de béton et ayant la même section trapézoïdale que la plaque de compression 25 . Le système d'épandage 4 précédemment décrit repose sur un châssis 1b sensiblement horizontal supporté par la chenille 3 . Ce châssis 1b , figure 4, supporte un étrier 30 monté pivotant autour d' un axe horizontal 31 perpendiculaire à l'axe longitudinal de la machine 1 . Cet étrier 30 se prolonge par une tige verticale 32 sur laquelle vient se fixer , par des attaches symbolisées en 33, la surface d'extrémité avant de la trémie 10 pour assurer la traction du système d'èpandage par la chenille 3.  The compression and smoothing system 5, FIGS. 1 and 5, is formed by a plate 25 of trapezoidal section slightly inclined from the front towards the rear. This plate 25 is fixed, by one end or front end, to the base of the rear wall 14 of the formwork 11. The distance separating the rear edge of this plate 25 from the ditch F fixes the thicknesses of the concrete layers on the bottom FF and on the lateral edges BF of the ditch F The plate 25 comprises a central part 25a facing the bottom FF of the ditch and two inclined lateral parts 25b parallel to the edges BF of the ditch F. The inclined parts 25b. end with a 25s ledge. towards an edge of the adjacent BF ditch. This plate 25 is extended by a smoothing plate 26 for the layers of concrete and having the same trapezoidal section as the compression plate 25. The previously described spreading system 4 rests on a substantially horizontal chassis 1b supported by the track 3. This chassis 1b, FIG. 4, supports a stirrup 30 mounted to pivot about a horizontal axis 31 perpendicular to the longitudinal axis of the machine 1. This stirrup 30 is extended by a vertical rod 32 on which is fixed, by fasteners symbolized at 33, the front end surface of the hopper 10 to ensure the traction of the spreading system by the track 3.
La structure de la machine 1 est complétée par des dispositifs de réglage , d'une part , de l'épaisseur des couches de béton et, d'autre part, pour la stabilité du système d'èpandage . En référence aux figures 2 et 4, le dispositif de réglage 40 de l'épaisseur des couches de béton est constitué, dans l'exemple considéré ici. par deux lames 41, 42 en regard l'une de l'autre et respectivement supportées par le châssis 1b et la base de la trémie 10. Ces lames s'étendent perpendiculairement à l'axe longitudinal de la machine 1 et sont situées vers la partie arrière de la chenille 3. Des vis 43, situées vers les deux extrémités de ces lames 41,42 traversent une lame pour prendre appui sur l'autre lame afin de les écarter l'une de l'autre, en entraînant un mouvement pivotant du système d'èpandage 4 vers l'avant autour de l'axe de rotation 31 situé à l'avant de la chenille 3 . Lorsque les lames 41, 42 sont en appui l'une sur l'autre, la hauteur h définissant l'épaisseur de la couche déposée sur le fond FF du fossé F et la distance d définissant l'épaisseur des couches de béton sur les bords BF du fossé F, sont minimales. Tout écartement entre les lames 41, 42 entraîne donc une augmentation de la hauteur h. et de la distance d . D'une manière générale, ce dispositif de réglage ne joue que sur quelques centimètres. The structure of the machine 1 is completed by adjustment devices, on the one hand, for the thickness of the concrete layers and, on the other hand, for the stability of the spreading system. With reference to FIGS. 2 and 4, the device 40 for adjusting the thickness of the concrete layers is formed, in the example considered here. by two blades 41, 42 facing each other and respectively supported by the frame 1b and the base of the hopper 10. These blades extend perpendicular to the longitudinal axis of the machine 1 and are located towards the rear part of the track 3. Screws 43, situated towards the two ends of these blades 41, 42 pass through a blade to bear on the other blade in order to separate them from each other, causing a pivoting movement of the spreading system 4 forward around the axis of rotation 31 located at the front of the track 3. When the blades 41, 42 are supported one on the other, the height h defining the thickness of the layer deposited on the bottom FF of the ditch F and the distance d defining the thickness of the layers of concrete on the edges BF of ditch F, are minimal. Any spacing between the blades 41, 42 therefore causes an increase in height h. and the distance d. Generally, this adjustment device only plays on a few centimeters.
En référence à nouveau à la figure 1, le dispositif de réglage de la stabilité du système d'èpandage 4 comprend deux patins latéraux rétractables 51 disposés de part et d'autre de la chenille 3, vers l'arrière de celle-ci. Chaque patin 51 est articulé à l'extrémité d'une biellette 51a. dont l'autre extrémité est articulée au châssis lfc., et est commandé en déplacement au moyen d'un vérin 52 monté en position inclinée de manière à venir appliquer temporairement le patin 51 associé sur le bord BF adjacent du fossé F. Les vérins 52 sont commandés séparément à partir du poste de pilotage 6 et alimentés à partir de la pompe P1. Referring again to FIG. 1, the device for adjusting the stability of the spreading system 4 comprises two retractable lateral pads 51 arranged on either side of the track 3, towards the rear of the latter. Each shoe 51 is articulated at the end of a link 51a. the other end of which is articulated to the chassis lfc., and is controlled to move by means of a jack 52 mounted in an inclined position so as to temporarily apply the pad 51 associated on the edge BF adjacent to the ditch F. The jacks 52 are ordered separately from cockpit 6 and supplied from pump P1.
Lorsque l'un des patins 51 vient en appui sur le bord adjacent BF du fossé F, l'ensemble du système d'èpandage 4 peut pivoter autour de l'axe longitudinal de la machine 1 , grâce au jeu qui est prévu au niveau de son ancrage avec la tige 32 solidaire du châssis lb porté par la chenille 3 (figure 4).  When one of the pads 51 comes to bear on the adjacent edge BF of the ditch F, the entire spreading system 4 can pivot around the longitudinal axis of the machine 1, thanks to the clearance which is provided at its anchoring with the rod 32 secured to the chassis 1b carried by the track 3 (FIG. 4).
En référence aux figures 1 et 5, le poste de pilotage 6 comprend un ensemble de manettes 60 (figure 1 ), notamment celles pour commander les moteurs Ml d'entraînement de la chenille 3 et M2 de rotation de la vis sans fin 20, les vérins 8 de déplacement des patins de direction 7, et les vérins 52 de déplacement des patins de stabilité 51. La personne chargée d'actionner ces différentes commandes monte sur un socle horizontal 61 fixé sur le dessus de la plaque de compression 25 par exemple (figure 5 ). Un socle auxiliaire horizontal 62, en contre-bas du socle 61, est fixé sur le dessus de la plaque de lissage 26 pour permettre à une seconde personne de surveiller les opérations et de parfaire éventuellement avec un outil manuel les imperfections du lissage des couches de béton.  With reference to FIGS. 1 and 5, the cockpit 6 comprises a set of levers 60 (FIG. 1), in particular those for controlling the motors Ml for driving the track 3 and M2 for rotation of the worm 20, the cylinders 8 for moving the steering pads 7, and the cylinders 52 for moving the stability pads 51. The person responsible for actuating these various controls mounts on a horizontal base 61 fixed on the top of the compression plate 25 for example ( figure 5). A horizontal auxiliary base 62, below the base 61, is fixed on the top of the smoothing plate 26 to allow a second person to monitor the operations and possibly perfect with a manual tool the imperfections of the smoothing of the layers of concrete.
Le fonctionnement de la machine 1 précédemment décrite découle facilement de la structure de cette machine. La machine 1 se déplace par sa chenille 3 sur le fond FF du fossé F. Le béton préalablement déversé et stocké dans la trémie 10 est entraîné par la vis sans fin 20 à l'intérieur du coffrage 11. Le béton tombe directement par gravité par l'ouverture inférieure centrale 12 sur le fond FF du fossé F. Les ailettes 22, entraînées en rotation par la vis sans fin 20, brassent le béton et l'éjectent par les ouvertures latérales 15 sur les bords BF du fossé F. Le béton ainsi déposé selon une épaisseur grossière à la sortie du coffrage 11 est ramené à une épaisseur voisine de h dans le fond FF du fossé F et à une épaisseur voisine de d sur les bords BF, au fur et à mesure de l'avance de la machine 1, par l'intermédiaire de la paroi arrière 14 du coffrage 11. En effet, cette paroi 14 forme une butée qui limite le dépôt du béton dans l'espace situé entre le fossé F et la plaque de compression 25 . Après le passage de cette plaque 25 légèrement inclinée , les épaisseurs des couches b1 , b2 ( figure 5 ) correspondent aux valeurs définies par h et d, celles-ci étant généralement sensiblement égales. The operation of the machine 1 previously described easily follows from the structure of this machine. The machine 1 moves by its track 3 on the bottom FF of the ditch F. The concrete previously spilled and stored in the hopper 10 is driven by the worm 20 inside the formwork 11. The concrete falls directly by gravity by the central lower opening 12 on the bottom FF of the ditch F. The fins 22, driven in rotation by the worm 20, stir the concrete and eject it through the lateral openings 15 on the edges BF of the ditch F. The concrete thus deposited in a coarse thickness at the outlet of the formwork 11 is reduced to a thickness close to h in the bottom FF of the ditch F and to a thickness close to d on the edges BF, as the machine 1 advances, via the rear wall 14 of the formwork 11. In fact, this wall 14 forms a stop which limits the deposition of the concrete in the space between the ditch F and the compression plate 25. After the passage of this slightly inclined plate 25, the thicknesses of the layers b1, b2 (FIG. 5) correspond to the values defined by h and d, these being generally substantially equal.
Lorsque le fossé F fait une courbe, le patin de direction 7, situé à l'extérieur du rayon de courbure, est commandé en déplacement pour venir prendre appui sur le bord BF adjacent pour modifier en conséquence la direction de la chenille 3. Le temps pendant lequel le patin 7 vient en appui sur le bord BF du fosse dépend du rayon de courbure du fossé F et de la vitesse d' avance de la machine 1. Parallèlement, les patins de stabilité 51 viennent ou non en appui sur les bords adjacents BF du fossé F suivant le profil du fond FF du fossé F, afin de maintenir le système d'èpandage sensiblement dans l'axe du fossé F et d'obtenir des épaisseurs de couches de béton sensiblement constantes.  When the ditch F makes a curve, the steering shoe 7, located outside the radius of curvature, is controlled in movement to come to bear on the adjacent edge BF to modify the direction of the track 3 accordingly. during which the pad 7 comes to bear on the edge BF of the pit depends on the radius of curvature of the ditch F and on the speed of advance of the machine 1. At the same time, the stability pads 51 come or not bear on the adjacent edges BF of ditch F along the bottom profile FF of ditch F, in order to maintain the spreading system substantially in the axis of ditch F and to obtain substantially constant thicknesses of concrete layers.
La machine telle que décrite peut bien évidemment être utilisée pour bétonner des canaux d'irrigation, c'est-à-dire que son champ d'application n'est pas limitée aux seuls fossés bordant les routes ou autoroutes . Bien entendu, les éléments constitutifs de la machine décrits à titre d'exemple peuvent être remplacés par des moyens équivalents à la portée de l'homme de métier. En particulier, le système de déplacement 3 peut être constitué par deux chenilles articulées et directrices, montées l'une derrière l'autre, ce qui permet de supprimer les patins de direction 7. Le système d'èpandage peut être complété par deux vis sans fin complémentaires, logées à l'intérieur du coffrage 11, et qui permettent de remonter le béton pour que celui-ci soit déposé en quantité suffisante sur les bords BF du fossé F, notamment lorsque ces bords doivent être bétonnés sur une hauteur importante. Les vis 43 qui servent au réglage de l'épaisseur des couches de béton, peuvent être remplacées par des vérins hydrauliques. Un treillis métallique formant armature peut être préalablement déroulé sur le fond et sur les bords du fossé F, puis noyé dans les couches de béton déposées par la machine pour réaliser des fossés en béton armé. Enfin, une telle machine peut être également télécommandée ou téléguidée à distance, selon des techniques connues déjà utilisées pour les engins de travaux publics. The machine as described can obviously be used for concreting irrigation canals, that is to say that its field of application is not limited only to ditches bordering roads or motorways. Of course, the components of the machine described by way of example can be replaced by means equivalent to the scope of the skilled person. In particular, the displacement system 3 can be constituted by two articulated and guiding tracks, mounted one behind the other, which makes it possible to remove the steering pads 7. The spreading system can be completed by two screws without additional end, housed inside the formwork 11, and which allow the concrete to be raised so that it is deposited in sufficient quantity on the edges BF of the ditch F, in particular when these edges must be concreted over a significant height. The screws 43 which are used to adjust the thickness of the concrete layers, can be replaced by hydraulic cylinders. A wire mesh forming a reinforcement can be previously unwound on the bottom and on the edges of the ditch F, then embedded in the layers of concrete deposited by the machine to make reinforced concrete ditches. Finally, such a machine can also be remotely controlled or remotely controlled, according to known techniques already used for public works vehicles.

Claims

REVENDICATIONS
1.- Machine autopropulsée pour bétonner des fossés , du type comprenant un groupe de propulsion entraînant des moyens de déplacement de la machine, et un système d'èpandage d'une couche de béton sur le fond et sur les bords du fossé à bétonner au fur et à mesure de l'avance de la machine, caractérisée en ce que les moyens de déplacement (3) prennent appui et roulent sur le fond (FF) du fossé (F) . 1.- Self-propelled machine for concreting ditches, of the type comprising a propulsion group driving means for moving the machine, and a system for spreading a layer of concrete on the bottom and on the edges of the ditch to be concreted at as the machine advances, characterized in that the displacement means (3) bear and roll on the bottom (FF) of the ditch (F).
2. - Machine selon la revendication 1, caractérisée en ce que les moyens de déplacement (3/ sont constitués par au moins une chenille.  2. - Machine according to claim 1, characterized in that the displacement means (3 / consist of at least one track.
3.- Machine selon la revendication 2, caractérisée en ce que les moyens de déplacement (3) sont associés à deux patins de direction rétractables (7) situés de part et d'autre des moyens de déplacement et commandés par deux vérins (8) de façon à venir chacun sélectivement et temporairement en appui sur le bord incline (BF) adjacent du fossé (F) pour modifier la direction des moyens de déplacement (3).  3.- Machine according to claim 2, characterized in that the displacement means (3) are associated with two retractable steering pads (7) located on either side of the displacement means and controlled by two jacks (8) so as to each come selectively and temporarily to bear on the inclined edge (BF) adjacent to the ditch (F) to modify the direction of the displacement means (3).
4.- Machine selon l'une quelconque des revendications précédentes, caractérisée en ce que le système d'èpandage (4) comprend une trémie (10 ) de stockage du béton, un moyen (20) pour acheminer le béton de la trémie (10) dans un coffrage (11) présentant une ouverture inférieure centrale (12) en regard du fond (FF) du fossé (F), et deux ouvertures latérales (15 ) en regard des bords inclines (BF) du fosse (F) et qui prolongent latéralement ladite ouverture inférieure (12). 4.- Machine according to any one of the preceding claims, characterized in that the spreading system (4) comprises a hopper (10) for storing the concrete, a means (20) for conveying the concrete from the hopper (10 ) in a formwork (11) having a central lower opening (12) facing the bottom (FF) of the ditch (F), and two lateral openings (15) facing the inclined edges (BF) of the pit (F) and which extend laterally said lower opening (12).
5.- Machine selon la revendication 4, caractérisée en ce que le moyen (20) pour acheminer le béton dans le coffrage (11) est une vis sans fin. 5.- Machine according to claim 4, characterized in that the means (20) for conveying the concrete in the formwork (11) is a worm.
6.- Machine selon la revendication 4, caractérisée en ce que la vis sans fin (20) entraîne à rotation des ailettes (22) logées à l'intérieur du coffrage (11) pour projeter le béton au travers des ouvertures latérales (15 ), le béton tombant par gravité au travers de l'ouverture inférieure centrale (12).  6.- Machine according to claim 4, characterized in that the worm (20) rotates the fins (22) housed inside the formwork (11) to spray the concrete through the side openings (15) , the concrete falling by gravity through the central lower opening (12).
7.- Machine selon l'une quelconque des revendications 4 à 6, caractérisée en ce que le système d'èpandage (4) comprend également une plaque (25) de compression des couches de béton déposées sur le fond (FF) et sur les bords (BF) du fossé (F), cette plaque (25 ) étant située à la base et à l'arrière du coffrage (11).  7.- Machine according to any one of claims 4 to 6, characterized in that the spreading system (4) also comprises a plate (25) for compressing the concrete layers deposited on the bottom (FF) and on the edges (BF) of the ditch (F), this plate (25) being located at the base and at the rear of the formwork (11).
8.- Machine selon la revendication 7, caractérisée en ce que la plaque de compression (25) est de section trapézoïdale épousant la forme trapézoïdale du fossé (F). 8.- Machine according to claim 7, characterized in that the compression plate (25) is of trapezoidal section matching the trapezoidal shape of the ditch (F).
9.- Machine selon la revendication 8, caractérisée en ce que la plaque de compression (25) est séparée du fond (FF) et des bords (BF) du fossé (F), d'une distance (h, d) déterminant l'épaisseur des couches de béton (b1, b2 ) déposées respectivement sur le fond (FF) et sur les bords (BF) du fossé (F). 9. Machine according to claim 8, characterized in that the compression plate (25) is separated from the bottom (FF) and the edges (BF) of the ditch (F), by a distance (h, d) determining l thickness of the concrete layers (b1, b2) deposited respectively on the bottom (FF) and on the edges (BF) of the ditch (F).
10.- Machine selon l'une quelconque des revendications précédentes, caractérisée en ce qu'elle comprend également un dispositif assurant la stabilité du système d'èpandage (4) au cours de l'avance de la machine, ce dispositif comprenant deux patins rétractables (51 ) situes de part et d'autre du système d'èpandage (4) et commandés par deux vérins (52) de façon à venir chacun sélectivement et temporairement en appui sur le bord incline (BF) adjacent du fossé (F). 10.- Machine according to any one of the preceding claims, characterized in that it also comprises a device ensuring the stability of the spreading system (4) during the advance of the machine, this device comprising two retractable pads (51) located on the side and other of the spreading system (4) and controlled by two jacks (52) so as to come each selectively and temporarily in abutment on the inclined edge (BF) adjacent to the ditch (F).
EP89909781A 1988-08-23 1989-08-23 Self-propelled machine for the concreting of ditches Expired - Lifetime EP0386209B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR8811111A FR2635797B1 (en) 1988-08-23 1988-08-23 SELF-PROPELLED MACHINE FOR CONCRETING THE PITCHES
FR8811111 1988-08-23
PCT/FR1989/000427 WO1990002227A1 (en) 1988-08-23 1989-08-23 Self-propelled machine for the concreting of ditches

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EP0386209A1 true EP0386209A1 (en) 1990-09-12
EP0386209B1 EP0386209B1 (en) 1994-11-02

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EP89909781A Expired - Lifetime EP0386209B1 (en) 1988-08-23 1989-08-23 Self-propelled machine for the concreting of ditches

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CN110158423A (en) * 2019-06-10 2019-08-23 刘凌晓 Cement pavement template fitting machine

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CN110158423A (en) * 2019-06-10 2019-08-23 刘凌晓 Cement pavement template fitting machine

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AU625321B2 (en) 1992-07-09
US5080532A (en) 1992-01-14
DE68919206D1 (en) 1994-12-08
AU4200189A (en) 1990-03-23
EP0386209B1 (en) 1994-11-02
FR2635797B1 (en) 1992-01-17
ATE113677T1 (en) 1994-11-15
FR2635797A1 (en) 1990-03-02
DE68919206T2 (en) 1995-03-23
WO1990002227A1 (en) 1990-03-08

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