EP0709526A2 - Back-filling device for pipe trenches - Google Patents

Back-filling device for pipe trenches Download PDF

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Publication number
EP0709526A2
EP0709526A2 EP95402080A EP95402080A EP0709526A2 EP 0709526 A2 EP0709526 A2 EP 0709526A2 EP 95402080 A EP95402080 A EP 95402080A EP 95402080 A EP95402080 A EP 95402080A EP 0709526 A2 EP0709526 A2 EP 0709526A2
Authority
EP
European Patent Office
Prior art keywords
trench
chassis
pipe
frame
strip
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP95402080A
Other languages
German (de)
French (fr)
Other versions
EP0709526A3 (en
Inventor
Alain Lebaigue
Edward Joseph Klamar
Jean Michel Meteye
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.)
Societe Miniere et Commerciale SOMICO SAS
Dite K N I Inc Ste
Original Assignee
Societe Miniere et Commerciale SOMICO SAS
Dite K N I Inc Ste
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
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Application filed by Societe Miniere et Commerciale SOMICO SAS, Dite K N I Inc Ste filed Critical Societe Miniere et Commerciale SOMICO SAS
Publication of EP0709526A2 publication Critical patent/EP0709526A2/en
Publication of EP0709526A3 publication Critical patent/EP0709526A3/en
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F5/00—Dredgers or soil-shifting machines for special purposes
    • E02F5/02—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches
    • E02F5/14—Component parts for trench excavators, e.g. indicating devices travelling gear chassis, supports, skids
    • E02F5/145—Component parts for trench excavators, e.g. indicating devices travelling gear chassis, supports, skids control and indicating devices
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F5/00—Dredgers or soil-shifting machines for special purposes
    • E02F5/02—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches
    • E02F5/10—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches with arrangements for reinforcing trenches or ditches; with arrangements for making or assembling conduits or for laying conduits or cables
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F5/00—Dredgers or soil-shifting machines for special purposes
    • E02F5/02—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches
    • E02F5/14—Component parts for trench excavators, e.g. indicating devices travelling gear chassis, supports, skids
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F5/00—Dredgers or soil-shifting machines for special purposes
    • E02F5/22—Dredgers or soil-shifting machines for special purposes for making embankments; for back-filling
    • E02F5/223—Dredgers or soil-shifting machines for special purposes for making embankments; for back-filling for back-filling
    • E02F5/226—Dredgers or soil-shifting machines for special purposes for making embankments; for back-filling for back-filling with means for processing the soil, e.g. screening belts, separators; Padding machines

Definitions

  • the present invention relates to backfilling devices for a trench, in particular a trench in which is housed a pipe for transporting a fluid.
  • a screening and backfilling device of this type usually includes a hopper for receiving the materials used for backfilling, a continuous conveyor arranged below the hopper, and a vibrating screen system fed by the continuous conveyor and intended to fill the trench of successive layers of materials having a determined particle size.
  • the assembly is supported by a chassis which is itself supported, cantilevered above the trench to be backfilled, by a carrying arm, integral with a tractor or the like. It is thus possible to backfill, a trench, by making a single pass with this device, with different layers of materials of different particle sizes.
  • the present invention aims to remedy these drawbacks by proposing a device for backfilling trenches which is equipped with means suitable for installing the warning tape and the cable sheath without the manual intervention of a worker.
  • the invention relates to a device for backfilling a trench, in particular a trench in which is housed a pipe for transporting a fluid, this device comprising a frame capable of being moved longitudinally above the trench using a means of locomotion, this frame supporting an embankment storage means, as well as means for screening and pouring this embankment on the plumb with the trench, this device being characterized in that, of a part of the said chassis disposed in front of the means for screening and pouring the fill, in the direction of movement of the chassis relative to the trench, are integral, d on the one hand, support means capable of receiving a roll of a warning strip and of allowing it to pivot freely around its axis by unwinding the strip, on the other hand, a roll of application of this strip mounted on the below the chassis and above the unrolled strip, so as to apply the latter to an embankment material previously poured into the trench on the pipe to be protected.
  • the tape application roller Since the tape application roller is supported by the front part of the device chassis, as the device progresses along the trench, the warning tape will be applied continuously by this roller against the embankment covering the pipe. and it will itself be covered immediately by a new layer of fill pouring out at the rear of the chassis.
  • the two layers of backfill can be discharged simultaneously by the device, in a manner known per se, by screening and dumping means offset on the chassis along the length of the trench.
  • the support means intended to receive the roll of the warning strip may simply comprise two U-section elements turned upwards and supported below the chassis by a member integral with the latter, and a rod intended to be engaged in the roller along its axis, to form an axis of rotation, and to rest in the U-shaped elements.
  • the scraper blade will advantageously be fixed below the chassis of the device, in front of the tape application roller, in the direction of movement of the device, so that the tape is applied to an embankment surface substantially flattened by this scraper blade.
  • the scraper blade and / or the application roller are preferably adjustable in height with respect to the chassis, for example using a system of jacks.
  • a guidance system comprising a cable (or chain) suspended from the end of a support means disposed at the front of the chassis, in its direction of movement, will serve as a guide means for the tractor driver driving the device above the trench, who must endeavor to keep the end of this cable or chain in contact with the upper part of the conduct.
  • a support means disposed at the front of the chassis carries a guide structure, which covers the pipe and of which is laterally integral at least one ring in which can be engaged a sheath of signal transmission cable, previously disposed at the edge of the trench, which is thus taken up by the guide structure, as the chassis of the device according to the invention advances, to be placed laterally at a constant distance from the pipe and be buried in this position in the embankment that the device pours into the trench.
  • the guide structure may simply have the shape of a portion of cylinder complementary to the profile of the pipe, so as to cover the latter and to rest on it.
  • the device 1 is arranged above a trench 2 to be backfilled, in which a pipe 3 is housed.
  • the device 1 is carried by a tractor 4, which moves laterally along the trench.
  • the device 1 is secured to the tractor by articulated arms such as 5 and 6 and a lifting system 7 by cable or jack is also provided.
  • the device 1 is of the type described in US Pat. No. 4,955,756, but it could naturally be different. It comprises a frame 8, which supports a hopper 9 intended to receive the raw fill and to pour it on a continuous conveyor 10.
  • the conveyor 10 in turn pours the fill onto a screening assembly 11 with vibrating screens, which, by the 'Intermediate troughs such as 12, successively pour into the trench a first layer of backfill 13 of a relatively fine particle size in which is embedded the pipe 3, then at least a second layer such as 14, of coarser particle size.
  • the present invention proposes, on the one hand, to interpose between the layers 13 and 14 of backfill, a strip 15 warning of the presence of the pipe 3 and, on the one hand, to arrange laterally with respect to the pipe 3 a sheath 16 for one or more cables for transporting information and control signals, this sheath being previously arranged at the edge of the trench 2, all these operations being carried out simultaneously by the device 1, at the same time as the operations of backfilling.
  • the backfill layer 13 is thus flattened by the blade 18, while, simultaneously, at the rear of this blade, the warning strip 15 unrolls from the roller 21 and is applied by the roller 22 against the embankment 13, to be immediately covered by the embankment 14.
  • a structure guide 28 which can be seen in more detail in FIG. 3.
  • This guide structure 28, made up of beams 29, has a cylindrical profile complementary to that of the pipe 3, on which it rests by rollers 30, mounted pivoting on the beams 29. The structure 28 can thus faithfully follow the path imposed on it by the pipe 3, during the movement of the chassis 8.
  • the structure 28 thus drives in its movement the rings 32, which take up the sheath 16 at a substantially constant distance from the edge and from the pipe 3, in a position in which it is then immobilized by the fill 13 that the chassis 8 pours, backfill in which it is thus embedded.
  • this operation of positioning the sheath 16 is also carried out in synchronization with the other operations controlled by the chassis, without requiring any manual intervention by a worker at the bottom of the trench.
  • the driver of the tractor 4 can thus permanently adjust the position of the device 8, so that the chain 35 remains in contact with the pipe 3.
  • a cable 36 driven at one end by a winch 37, passes over a deflection pulley 38 carried by the beam 34 and supports at its end the arm 26, of which the guide structure 28 is integral. It is thus possible to raise this structure when necessary, or when the device 1 is not used.
  • the scraper blade 18 and the roller 22 are preferably adjustable vertically with respect to the chassis, for example using a system of jacks.
  • the invention therefore proposes a device for backfilling trenches which is simple and easy to handle, which, by means of inexpensive arrangements of the usual devices, allows them to fulfill new advantageous functions, in synchronization with their usual functions.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Light Guides In General And Applications Therefor (AREA)
  • Road Paving Machines (AREA)
  • Electric Cable Installation (AREA)

Abstract

The machine consists of a chassis (8) which can travel lengthwise above the trench by means of a propulsion system, a hopper (9) for the filling material and a system (11,12) for riddling the material and tipping it into the trench. In front of the riddle/tipping system the chassis has a support for a reel (21) and applicator roller (22) for an information and warning strip (15) which is laid in the trench on top of a first layer (13) of a filling material laid over the pipe or cable (3) placed in the bottom of the trench. The reel support has two hooks, a rod and a scraper blade, and can incorporate a guide frame (28) and rollers for a cable (16) laid adjacent to the pipe (3).

Description

La présente invention concerne les dispositifs de remblayage d'une tranchée, notamment d'une tranchée dans laquelle est logée une conduite de transport d'un fluide.The present invention relates to backfilling devices for a trench, in particular a trench in which is housed a pipe for transporting a fluid.

On sait que, pour le transport de fluides sur de longues distances, de gaz, par exemple, ou de pétrole, on utilise des conduites du type des pipe-lines, qu'il est usuel de protéger en les enterrant dans des tranchées. Le remblayage de ces tranchées s'effectue habituellement en réutilisant les déblais de la tranchée, après criblage de ceux-ci, et l'on utilise habituellement dans ce but un dispositif de criblage et de remblayage, qui est porté latéralement par un tracteur, qui se déplace le long de la tranchée.It is known that, for the transport of fluids over long distances, of gas, for example, or of petroleum, pipes of the pipeline type are used, which it is customary to protect by burying them in trenches. The backfilling of these trenches is usually carried out by reusing the cuttings from the trench, after screening them, and a screening and backfilling device is usually used for this purpose, which is carried laterally by a tractor, which moves along the trench.

Un dispositif de criblage et de remblayage de ce type comprend habituellement une trémie destinée à recevoir les matériaux utilisés pour le remblayage, un convoyeur continu disposé au-dessous de la trémie, et un système de tamis vibrants alimentés par le convoyeur continu et destinés à remplir la tranchée de couches successives de matériaux ayant une granulométrie déterminée. L'ensemble est supporté par un châssis qui est lui-même supporté, en porte-à-faux au-dessus de la tranchée à remblayer, par un bras porteur, solidaire d'un tracteur ou d'un dispositif analogue. On peut ainsi remblayer, une tranchée, en effectuant une seule passe avec ce dispositif, avec différentes couches de matériaux de granulométries différentes.A screening and backfilling device of this type usually includes a hopper for receiving the materials used for backfilling, a continuous conveyor arranged below the hopper, and a vibrating screen system fed by the continuous conveyor and intended to fill the trench of successive layers of materials having a determined particle size. The assembly is supported by a chassis which is itself supported, cantilevered above the trench to be backfilled, by a carrying arm, integral with a tractor or the like. It is thus possible to backfill, a trench, by making a single pass with this device, with different layers of materials of different particle sizes.

Un tel dispositif est décrit par exemple en détail dans le brevet U.S. N° 4 955 756, mais de nombreuses variantes existent sur le marché et l'invention n'est naturellement pas limitée aux dispositifs du type décrit dans le brevet américain qui vient d'être cité.Such a device is described for example in detail in US Pat. No. 4,955,756, but many variants exist on the market and the invention is naturally not limited to devices of the type described in the American patent which has just to be cited.

La présente invention vise à perfectionner de tels dispositifs de remblayage, de manière à les rendre aptes à mettre en place dans la tranchée, simultanément et en continu :

  • d'une part, au-dessus da la conduite, une bande continue de matière plastique, ou d'un grillage ou d'un tissu, destinée à informer ultérieurement des ouvriers appelés à intervenir au voisinage de la conduite, de la présence de celle-ci,
  • d'autre part, latéralement par rapport à la conduite, d'une gaine tubulaire destinée à recevoir un ou des câbles, notamment de fibres optiques, pour la transmission d'informations et de commandes d'asservissement.
The present invention aims to improve such backfilling devices, so as to make them suitable for positioning in the trench, simultaneously and in continued :
  • on the one hand, above the pipe, a continuous strip of plastic, or a mesh or a fabric, intended to subsequently inform workers called to intervene in the vicinity of the pipe, of the presence of that -this,
  • on the other hand, laterally with respect to the pipe, a tubular sheath intended to receive one or more cables, in particular of optical fibers, for the transmission of information and of control commands.

Il est, en effet, usuel de prévoir au-dessus des conduites logées dans une tranchée une bande continue destinée à avertir de leur présence des ouvriers amenés à intervenir ultérieurement et qui, rencontrant cette bande avec leurs outils, seront ainsi informés de l'existence de la conduite. Par ailleurs, il est de plus en plus fréquent d'utiliser les tranchées ainsi réalisées pour y disposer à l'intérieur d'une gaine de protection des câbles de transmission d'informations e t d e commandes d'asservissement, qui sont ainsi protégés sans surcoût par les matériaux de remblai.It is, in fact, usual to provide above the pipes housed in a trench a continuous strip intended to warn of their presence workers brought in to intervene later and who, meeting this strip with their tools, will thus be informed of the existence of driving. In addition, it is more and more frequent to use the trenches thus produced to dispose therein inside a protective sheath of the cables for the transmission of information and of control commands, which are thus protected without additional cost by backfill materials.

Actuellement, la bande d'avertissement et la gaine des câbles sont toutefois mises en place manuellement dans la tranchée et il en résulte un surcoût important pour les opérateurs du chantier. En outre, sur ce chantier, au moment des opérations de remblayage, les ouvriers chargés de la mise en place de ces systèmes annexes opèrent dans des conditions dangereuses et extrêmement pénibles, en particulier à cause de la poussière dégagée.Currently, the warning strip and the cable sheath are however placed manually in the trench and this results in a significant additional cost for site operators. In addition, on this site, at the time of the backfilling operations, the workers responsible for the installation of these ancillary systems operate in dangerous and extremely painful conditions, in particular because of the dust released.

La présente invention vise à remédier à ces inconvénients en proposant un dispositif de remblayage de tranchées qui est équipé de moyens propres à mettre en place la bande d'avertissement et la gaine pour câbles sans intervention manuelle d'un ouvrier.The present invention aims to remedy these drawbacks by proposing a device for backfilling trenches which is equipped with means suitable for installing the warning tape and the cable sheath without the manual intervention of a worker.

A cet effet, l'invention a pour objet un dispositif de remblayage d'une tranchée, notamment d'une tranchée dans laquelle est logée une conduite de transport d'un fluide, ce dispositif comprenant un châssis apte à être déplacé longitudinalement au-dessus de la tranchée à l'aide d'un moyen de locomotion, ce châssis supportant un moyen de stockage de remblai, ainsi que des moyens de criblage et de déversement de ce remblai à l'aplomb de la tranchée, ce dispositif étant caractérisé en ce que, d'une partie dudit châssis disposée en avant des moyens de criblage et de déversement du remblai, dans le sens de déplacement du châssis par rapport à la tranchée, sont solidaires, d'une part, des moyens de support aptes à recevoir un rouleau d'une bande d'avertissement et à le laisser pivoter librement autour de son axe en déroulant la bande, d'autre part, un rouleau d'application de cette bande monté au-dessous du châssis et au-dessus de la bande déroulée, de manière à appliquer celle-ci sur un matériau de remblai préalablement déversé dans la tranchée sur la conduite à protéger.To this end, the invention relates to a device for backfilling a trench, in particular a trench in which is housed a pipe for transporting a fluid, this device comprising a frame capable of being moved longitudinally above the trench using a means of locomotion, this frame supporting an embankment storage means, as well as means for screening and pouring this embankment on the plumb with the trench, this device being characterized in that, of a part of the said chassis disposed in front of the means for screening and pouring the fill, in the direction of movement of the chassis relative to the trench, are integral, d on the one hand, support means capable of receiving a roll of a warning strip and of allowing it to pivot freely around its axis by unwinding the strip, on the other hand, a roll of application of this strip mounted on the below the chassis and above the unrolled strip, so as to apply the latter to an embankment material previously poured into the trench on the pipe to be protected.

Le rouleau d'application de la bande étant supporté par la partie avant du châssis du dispositif, à mesure que celui-ci progresse le long de la tranchée, la bande d'avertissement sera appliquée en continu par ce rouleau contre le remblai recouvrant la conduite et elle sera elle-même recouverte aussitôt par une nouvelle couche de remblai se déversant à l'arrière du châssis. Les deux couches de remblai peuvent être déversées simultanément par le dispositif, de façon connue en soi, par des moyens de criblage et de déversement décalés sur le châssis suivant la longueur de la tranchée.Since the tape application roller is supported by the front part of the device chassis, as the device progresses along the trench, the warning tape will be applied continuously by this roller against the embankment covering the pipe. and it will itself be covered immediately by a new layer of fill pouring out at the rear of the chassis. The two layers of backfill can be discharged simultaneously by the device, in a manner known per se, by screening and dumping means offset on the chassis along the length of the trench.

Les moyens de support destinés à recevoir le rouleau de la bande d'avertissement, par exemple un rouleau d'un film de polyéthylène, pourront comprendre simplement deux éléments à section en U tournés vers le haut et supportés au-dessous du châssis par un organe solidaire de celui-ci, et une tige destinée à être engagée dans le rouleau suivant son axe, pour former un axe de rotation, et à reposer dans les éléments en U.The support means intended to receive the roll of the warning strip, for example a roll of a polyethylene film, may simply comprise two U-section elements turned upwards and supported below the chassis by a member integral with the latter, and a rod intended to be engaged in the roller along its axis, to form an axis of rotation, and to rest in the U-shaped elements.

Le remblai étant déversé en vrac dans la tranchée, une lame racleuse sera avantageusement fixée au-dessous du châssis du dispositif, en avant du rouleau d'application de la bande, dans le sens de déplacement du dispositif, de manière que le bande soit appliquée sur une surface de remblai sensiblement aplanie par cette lame racleuse.The backfill being poured loose in the trench, a The scraper blade will advantageously be fixed below the chassis of the device, in front of the tape application roller, in the direction of movement of the device, so that the tape is applied to an embankment surface substantially flattened by this scraper blade. .

La lame racleuse et/ou le rouleau d'application sont de préférence réglables en hauteur par rapport au châssis, par exemple à l'aide d'un système de vérins.The scraper blade and / or the application roller are preferably adjustable in height with respect to the chassis, for example using a system of jacks.

En vue de positionner la bande avertisseuse à une distance sensiblement constante de la conduite à protéger, un système de guidage comprenant un câble (ou une chaîne) suspendu à l'extrémité d'un moyen de support disposé à l'avant du châssis, dans son sens de déplacement, servira de moyen de guidage pour le conducteur de tracteur entraînant le dispositif au-dessus de la tranchée, qui devra s'efforcer de maintenir l'extrémité de ce câble ou de cette chaîne en contact avec la partie supérieure de la conduite.In order to position the warning tape at a substantially constant distance from the pipe to be protected, a guidance system comprising a cable (or chain) suspended from the end of a support means disposed at the front of the chassis, in its direction of movement, will serve as a guide means for the tractor driver driving the device above the trench, who must endeavor to keep the end of this cable or chain in contact with the upper part of the conduct.

Dans une forme de réalisation préférée de l'invention, un moyen de support disposé à l'avant du châssis, porte une structure de guidage, qui coiffe la conduite et dont est solidaire latéralement au moins un anneau dans lequel peut être engagée une gaine de câble de transmission de signaux, préalablement disposée au bord de la tranchée, laquelle est ainsi reprise par la structure de guidage, à mesure qu'avance le châssis du dispositif conforme à l'invention, pour venir se placer latéralement à une distance constante de la conduite et être enfouie en cette position dans le remblai que déverse le dispositif dans la tranchée.In a preferred embodiment of the invention, a support means disposed at the front of the chassis, carries a guide structure, which covers the pipe and of which is laterally integral at least one ring in which can be engaged a sheath of signal transmission cable, previously disposed at the edge of the trench, which is thus taken up by the guide structure, as the chassis of the device according to the invention advances, to be placed laterally at a constant distance from the pipe and be buried in this position in the embankment that the device pours into the trench.

La structure de guidage pourra simplement avoir la forme d'une portion de cylindre complémentaire du profil de la conduite, de façon à coiffer celle-ci et à reposer sur elle.The guide structure may simply have the shape of a portion of cylinder complementary to the profile of the pipe, so as to cover the latter and to rest on it.

Une forme de réalisation de l'invention va être décrite ci-après, à titre d'exemple non limitatif, en référence aux dessins schématiques annexés. Sur ces dessins :

  • La figure 1 est une vue en élévation latérale du dispositif, représenté en cours de remblayage d'une tranchée, pendant les phases de mise en place de la bande d'avertissement et de la gaine du ou des câbles de transmission d'informations et de signaux d'asservissement;
  • La figure 2 est une vue schématique partielle du dispositif, suivant la flèche F de la figure 1 ;
  • La figure 3 est une vue partielle à plus grande échelle du système de mise en place de la gaine des câbles de transmission d'informations et de signaux d'asservissement, en position sur la conduite.
An embodiment of the invention will be described below, by way of non-limiting example, with reference to the accompanying schematic drawings. In these drawings:
  • Figure 1 is a side elevational view of the device, shown during backfilling of a trench, during the phases of establishment of the strip warning and sheath of the cable (s) for transmitting information and control signals;
  • Figure 2 is a partial schematic view of the device, along arrow F of Figure 1;
  • Figure 3 is a partial view on a larger scale of the system for installing the sheath of the cables for transmitting information and servo signals, in position on the pipe.

Comme on le voit sur ces dessins, le dispositif 1 conforme à l'invention est disposé au-dessus d'une tranchée 2 à remblayer, dans laquelle est logée une conduite 3. Le dispositif 1 est porté par un tracteur 4, qui se déplace latéralement le long de la tranchée. Le dispositif 1 est solidaire du tracteur par des bras articulés tels que 5 et 6 et un système de relevage 7 par câble ou vérin est également prévu.As can be seen in these drawings, the device 1 according to the invention is arranged above a trench 2 to be backfilled, in which a pipe 3 is housed. The device 1 is carried by a tractor 4, which moves laterally along the trench. The device 1 is secured to the tractor by articulated arms such as 5 and 6 and a lifting system 7 by cable or jack is also provided.

Dans le cas présent, le dispositif 1 est du type décrit dans le brevet US N° 4 955 756, mais il pourrait naturellement être différent. Il comprend un châssis 8, qui supporte une trémie 9 destinée à recevoir le remblai brut et à le déverser sur un convoyeur continu 10. Le convoyeur 10 déverse à son tour le remblai sur un ensemble de criblage 11 à tamis vibrants, qui, par l'intermédiaire de goulottes telles que 12, déversent successivement dans la tranchée une première couche de remblai 13 d'une granulométrie relativement fine dans laquelle est noyée la conduite 3, puis au moins une seconde couche telle que 14, d'une granulométrie plus grossière.In the present case, the device 1 is of the type described in US Pat. No. 4,955,756, but it could naturally be different. It comprises a frame 8, which supports a hopper 9 intended to receive the raw fill and to pour it on a continuous conveyor 10. The conveyor 10 in turn pours the fill onto a screening assembly 11 with vibrating screens, which, by the 'Intermediate troughs such as 12, successively pour into the trench a first layer of backfill 13 of a relatively fine particle size in which is embedded the pipe 3, then at least a second layer such as 14, of coarser particle size.

La présente invention se propose, d'une part, d'interposer entre les couches 13 et 14 de remblai, une bande 15 d'avertissement de la présence de la conduite 3 et, d'une part, de disposer latéralement par rapport à la conduite 3 une gaine 16 pour un ou des câbles de transport d'informations et de signaux d'asservissement, cette gaine étant préalablement disposée au bord de la tranchée 2, toutes ces opérations étant effectuées simultanément par le dispositif 1, en même temps que les opérations de remblayage.The present invention proposes, on the one hand, to interpose between the layers 13 and 14 of backfill, a strip 15 warning of the presence of the pipe 3 and, on the one hand, to arrange laterally with respect to the pipe 3 a sheath 16 for one or more cables for transporting information and control signals, this sheath being previously arranged at the edge of the trench 2, all these operations being carried out simultaneously by the device 1, at the same time as the operations of backfilling.

Dans ce but, conformément à l'invention, à l'arrière de deux bras 17, disposés au-dessous du châssis 8, à l'avant de celui-ci, et portant une lame de raclage 18, destinée à aplanir le remblai 13, sont prévus des crochets en U, 19, qui supportent une tige 20, engagée suivant son axe dans un rouleau 21 de la bande d'avertissement 15, en polyéthylène ou en grillage, par exemple. Celle-ci peut ainsi se dérouler librement à l'arrière de la lame 18, pour être appliquée sur la couche de remblai 13 par un rouleau 22, monté pivotant à l'arrière de la lame 18 sur des bras 24, portés par les bras 17 ou la lame 18.For this purpose, in accordance with the invention, at the rear of two arms 17, arranged below the chassis 8, at the front thereof, and carrying a scraper blade 18, intended to flatten the embankment 13 , there are provided U-shaped hooks, 19, which support a rod 20, engaged along its axis in a roller 21 of the warning strip 15, made of polyethylene or mesh, for example. This can thus take place freely at the rear of the blade 18, to be applied to the backfill layer 13 by a roller 22, pivotally mounted at the rear of the blade 18 on arms 24, carried by the arms 17 or blade 18.

A mesure que progresse le châssis 8, la couche de remblai 13 est ainsi aplanie par la lame 18, tandis que, simultanément, à l'arrière de cette lame, la bande d'avertissement 15 se déroule à partir du rouleau 21 et est appliquée par le rouleau 22 contre le remblai 13, pour être immédiatement recouverte par le remblai 14.As the frame 8 progresses, the backfill layer 13 is thus flattened by the blade 18, while, simultaneously, at the rear of this blade, the warning strip 15 unrolls from the roller 21 and is applied by the roller 22 against the embankment 13, to be immediately covered by the embankment 14.

Toutes ces opérations s'effectuent en synchronisation, sans aucune intervention manuelle d'un ouvrier dans la tranchée, avec les risques sérieux que ceci comporterait, avec en plus des conditions d'ambiance et de travail difficiles à supporter.All these operations are carried out in synchronization, without any manual intervention by a worker in the trench, with the serious risks that this would entail, with in addition ambient and working conditions that are difficult to bear.

A l'avant du châssis 8, dans le sens de déplacement de celui-ci, est monté pivotant à l'une de ses extrémités un bras 26, qui supporte à son autre extrémité, par un axe vertical 27 et horizontal 27A, une structure de guidage 28, que l'on voit plus en détail sur la figure 3. Cette structure de guidage 28, constituée de poutrelles 29, a un profil cylindrique complémentaire de celui de la conduite 3, sur laquelle elle repose par des galets 30, montés pivotants sur les poutrelles 29. La structure 28 peut ainsi suivre fidèlement le trajet que lui impose la conduite 3, au cours du déplacement du châssis 8.At the front of the chassis 8, in the direction of movement thereof, is pivotally mounted at one of its ends an arm 26, which supports at its other end, by a vertical axis 27 and horizontal 27A, a structure guide 28, which can be seen in more detail in FIG. 3. This guide structure 28, made up of beams 29, has a cylindrical profile complementary to that of the pipe 3, on which it rests by rollers 30, mounted pivoting on the beams 29. The structure 28 can thus faithfully follow the path imposed on it by the pipe 3, during the movement of the chassis 8.

Elle porte, par deux bras latéraux 31, des anneaux de guidage 32, dans lesquels est engagée la gaine 16. Des galets 33, montés pivotants à l'intérieur des anneaux 32, permettent à la gaine 16 de coulisser aisément dans ces anneaux.It carries, by two lateral arms 31, guide rings 32, in which the sheath 16 is engaged. Rollers 33, pivotally mounted inside the rings 32, allow the sheath 16 to slide easily in these rings.

A mesure que progresse le châssis 8, la structure 28 entraîne ainsi dans son mouvement les anneaux 32, qui reprennent la gaine 16 à une distance sensiblement constante du bord et de la conduite 3, en une position dans laquelle elle est ensuite immobilisée par le remblai 13 que déverse le châssis 8, remblai dans lequel elle est ainsi noyée.As the chassis 8 progresses, the structure 28 thus drives in its movement the rings 32, which take up the sheath 16 at a substantially constant distance from the edge and from the pipe 3, in a position in which it is then immobilized by the fill 13 that the chassis 8 pours, backfill in which it is thus embedded.

On notera que cette opération de mise en position de la gaine 16, s'effectue elle aussi en synchronisation avec les autres opérations commandées par le châssis, sans nécessiter aucune intervention manuelle d'un ouvrier au fond de la tranchée.It will be noted that this operation of positioning the sheath 16 is also carried out in synchronization with the other operations controlled by the chassis, without requiring any manual intervention by a worker at the bottom of the trench.

A l'avant du châssis 1 est prévue une poutre 34 sensiblement parallèle à la conduite 3, qui supporte une chaîne 35, dont la longueur est telle, lorsque son extrémité libre touche la conduite 3, que le dispositif soit situé à une hauteur convenable par rapport à la tranchée. Le conducteur du tracteur 4 peut ainsi régler en permanence la position du dispositif 8, de manière que la chaîne 35 reste au contact de la conduite 3.At the front of the chassis 1 is provided a beam 34 substantially parallel to the pipe 3, which supports a chain 35, the length of which is such, when its free end touches the pipe 3, that the device is located at a suitable height by compared to the trench. The driver of the tractor 4 can thus permanently adjust the position of the device 8, so that the chain 35 remains in contact with the pipe 3.

Un câble 36, entraîné à une extrémité par un treuil 37, passe sur une poulie de renvoi 38 portée par la poutre 34 et supporte à son extrémité le bras 26, dont est solidaire la structure de guidage 28. Il est ainsi possible de relever cette structure en cas de nécessité, ou lorsque le dispositif 1 n'est pas utilisé.A cable 36, driven at one end by a winch 37, passes over a deflection pulley 38 carried by the beam 34 and supports at its end the arm 26, of which the guide structure 28 is integral. It is thus possible to raise this structure when necessary, or when the device 1 is not used.

Comme il a été indiqué ci-dessus, la lame racleuse 18 et le rouleau 22 sont de préférence réglables verticalement par rapport au châssis, par exemple à l'aide d'un système de vérins.As indicated above, the scraper blade 18 and the roller 22 are preferably adjustable vertically with respect to the chassis, for example using a system of jacks.

L'invention propose donc un dispositif de remblayage de tranchées simple et facile à manipuler, qui, moyennant des aménagements peu coûteux des dispositifs usuels, leur permet de remplir de nouvelles fonctions avantageuses, en synchronisation avec leurs fonctions usuelles.The invention therefore proposes a device for backfilling trenches which is simple and easy to handle, which, by means of inexpensive arrangements of the usual devices, allows them to fulfill new advantageous functions, in synchronization with their usual functions.

Claims (10)

Dispositif de remblayage d'une tranchée (2), notamment d'une tranchée dans laquelle est logée une conduite (3) de transport d'un fluide, ce dispositif comprenant un châssis (8) apte à être déplacé longitudinalement au-dessus de la tranchée à l'aide d'un moyen de locomotion (4), ce châssis supportant un moyen (9) de stockage du remblai, ainsi que des moyens (11, 12) de criblage et de déversement de ce remblai à l'aplomb de la tranchée (2), ce dispositif étant caractérisé en ce que, d'une partie dudit châssis (8) disposée en avant des moyens de criblage et de déversement du remblai, dans le sens de déplacement du châssis par rapport à la tranchée, sont solidaires, d'une part, des moyens de support (19, 20) aptes à recevoir un rouleau (21) d'une bande d'avertissement (15) et à le laisser pivoter librement autour de son axe en déroulant la bande, d'autre part, un rouleau (22) d'application de cette bande, monté au-dessous du châssis et au-dessus de la bande (15) déroulée, de manière à appliquer celle-ci sur un matériau de remblai (13) préalablement déversé dans la tranchée (2) sur la conduite (3) à protéger.Device for backfilling a trench (2), in particular a trench in which is housed a pipe (3) for transporting a fluid, this device comprising a frame (8) capable of being moved longitudinally above the trench using a means of locomotion (4), this frame supporting a means (9) for storage of the embankment, as well as means (11, 12) for screening and pouring of this embankment directly above the trench (2), this device being characterized in that, of a part of said chassis (8) disposed in front of the means for screening and pouring the fill, in the direction of movement of the chassis relative to the trench, are integral, on the one hand, support means (19, 20) capable of receiving a roller (21) of a warning strip (15) and of allowing it to pivot freely around its axis by unwinding the strip, d on the other hand, a roller (22) for applying this strip, mounted below the chassis and above the strip (15 ) unrolled, so as to apply it on an embankment material (13) previously poured into the trench (2) on the pipe (3) to be protected. Dispositif selon la revendication 1, caractérisé en ce que les moyens de support d'un rouleau (21) de la bande d'avertissement (15) comprennent deux crochets (19) à section en U tournée vers le haut et supportés au-dessous du châssis par un organe solidaire de celui-ci, et une tige (20), destinée à reposer dans les crochets (19) et à être engagée dans le rouleau (21) suivant son axe pour former un axe de rotation.Device according to claim 1, characterized in that the means for supporting a roll (21) of the warning strip (15) comprise two hooks (19) with U-section facing upwards and supported below the chassis by a member integral with the latter, and a rod (20) intended to rest in the hooks (19) and to be engaged in the roller (21) along its axis to form an axis of rotation. Dispositif selon la revendication 2, caractérisé en ce que l'organe disposé au-dessous du châssis (8) et supportant les crochets (19) est une lame de raclage du remblai (13) déversé à l'avant de cette lame.Device according to claim 2, characterized in that the member disposed below the frame (8) and supporting the hooks (19) is a scraper blade for the fill (13) discharged at the front of this blade. Dispositif selon la revendication 3, caractérisé en ce que le rouleau (22) d'application de la bande d'avertissement est disposé à l'arrière de la lame (18) et est solidaire de celle-ci.Device according to claim 3, characterized in that the roller (22) for applying the warning tape is arranged at the rear of the blade (18) and is integral with the latter. Dispositif selon l'une des revendications 3 et 4, caractérisé en ce qu'il comporte au moins deux moyens décalés de criblage et de déversement du remblai, l'un opérant à l'avant de la lame 18 et l'autre à l'arrière de celle-ci.Device according to one of claims 3 and 4, characterized in that it comprises at least two offset means for screening and discharging the fill, one operating at the front of the blade 18 and the other at the back of it. Dispositif selon l'une des revendications 3 à 5, caractérisé en ce qu'une ossature (28), de préférence de profil complémentaire de la conduite (3), coiffe cette conduite et est portée par le châssis (8), cette ossature supportant latéralement au moins un anneau (32), dans lequel peut être engagée une gaine (16) de protection de câbles de transmission d'infomations et de signaux d'asservissement.Device according to one of claims 3 to 5, characterized in that a frame (28), preferably of complementary profile to the pipe (3), covers this pipe and is carried by the chassis (8), this frame supporting laterally at least one ring (32), in which can be engaged a sheath (16) for protection of information transmission cables and control signals. Dispositif selon la revendication 6, caractérisé en ce que l'ossature (28) comporte des galets (30) par lesquels elle repose sur la conduite (3).Device according to claim 6, characterized in that the frame (28) comprises rollers (30) by which it rests on the pipe (3). Dispositif selon l'une des revendications 6 et 7, caractérisé en ce l'anneau (32) comporte dans sa partie creuse des galets (33) appelés à venir en contact avec la gaine (16) des câbles de transmission.Device according to one of claims 6 and 7, characterized in that the ring (32) comprises in its hollow part rollers (33) called to come into contact with the sheath (16) of the transmission cables. Dispositif selon l'une des revendications 6 à 8, caractérisé en ce que l'ossature (28) est portée par un bras (26) monté pivotant sur le châssis (8) et en ce que le châssis comprend des moyens (37) permettant de déplacer verticalement le bras (26) et l'ossature (28) par rapport à la tranchée (2)Device according to one of claims 6 to 8, characterized in that the framework (28) is carried by an arm (26) pivotally mounted on the chassis (8) and in that the chassis comprises means (37) allowing to vertically move the arm (26) and the frame (28) relative to the trench (2) Dispositif selon l'une des revendications 1 à 10, caractérisé en ce qu'il comporte à l'avant un moyen de support (34), à partir duquel pend un câble ou une chaîne servant de moyen de guidage du châssis.Device according to one of claims 1 to 10, characterized in that it comprises at the front a support means (34), from which hangs a cable or chain serving as a means of guiding the chassis.
EP95402080A 1994-10-31 1995-09-14 Back-filling device for pipe trenches Withdrawn EP0709526A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9413032A FR2726304B1 (en) 1994-10-31 1994-10-31 IMPROVEMENTS IN FILLING DEVICES OF A TRENCH, IN PARTICULAR OF A TRENCH IN WHICH A FLUID CONVEYOR IS HOSTED
FR9413032 1994-10-31

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EP0709526A2 true EP0709526A2 (en) 1996-05-01
EP0709526A3 EP0709526A3 (en) 1996-07-24

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FR (1) FR2726304B1 (en)
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FR2726304B1 (en) 1997-01-17
US5632574A (en) 1997-05-27
MA23702A1 (en) 1996-07-01
EP0709526A3 (en) 1996-07-24
FR2726304A1 (en) 1996-05-03

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