EP0000179A1 - Apparatus for assembling large diameter pipes by insertion - Google Patents

Apparatus for assembling large diameter pipes by insertion Download PDF

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Publication number
EP0000179A1
EP0000179A1 EP78100212A EP78100212A EP0000179A1 EP 0000179 A1 EP0000179 A1 EP 0000179A1 EP 78100212 A EP78100212 A EP 78100212A EP 78100212 A EP78100212 A EP 78100212A EP 0000179 A1 EP0000179 A1 EP 0000179A1
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EP
European Patent Office
Prior art keywords
pipe
laid
carriage
strut
articulated
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Granted
Application number
EP78100212A
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German (de)
French (fr)
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EP0000179B1 (en
Inventor
Louis Georges Martinez
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Individual
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Individual
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
    • F16L1/024—Laying or reclaiming pipes on land, e.g. above the ground
    • F16L1/06—Accessories therefor, e.g. anchors
    • F16L1/09—Accessories therefor, e.g. anchors for bringing two tubular members closer to each other

Definitions

  • the present invention relates to an apparatus for the assembly by interlocking of large diameter pipes, in particular concrete pipes used mainly for sanitation.
  • Each pipe is generally lowered, surrounded by a sling attached to a crane, above the bottom of the excavation, so that its male end is located substantially opposite the female end of the pipe previously laid.
  • a cable type traction device is then hooked to a sling placed for example around one of the pipes already laid.
  • the hook of the traction device is connected to the sling supporting the pipe to be laid and the male end of the pipe to be laid is fitted into the female end of the pipe already laid by operating the traction device. During this whole operation the hose must remain suspended from the lifting sling.
  • the interlocking of two pipes can also be carried out by traction inside the pipes, using a traction device generally supported, on the one hand, on a manhole placed every forty to sixty meters in such sanitation pipes and, on the other hand, on a plank, an iron bar or the like applied crosswise against the inner stop collar of the female end of the pipe to be laid.
  • a traction device generally supported, on the one hand, on a manhole placed every forty to sixty meters in such sanitation pipes and, on the other hand, on a plank, an iron bar or the like applied crosswise against the inner stop collar of the female end of the pipe to be laid.
  • the present invention relates to an apparatus which simplifies the assembly by fitting of large diameter pipes and significantly reduces the risks of laying such pipes.
  • the invention also relates to an apparatus which makes it possible to reduce the cost of laying these pipes.
  • the apparatus according to the invention comprises a carriage capable of rolling inside the pipes laid, on the bottom of the latter.
  • the trolley makes it possible to move the device as the laying of the pipeline progresses, by assembling elementary pipes. For each pipe to be laid, the trolley is immobilized in the last pipe laid, the pipe to be laid is leveled and centered in relation to the pipe already laid and the pipe to be laid is fitted into the pipe laid by operating the device. traction.
  • the immobilization and leveling and centering device comprises at least one strut articulated between its two ends on the carriage so as to be able to pivot in a longitudinal vertical plane of the cart.
  • a sole is articulated on the lower end of this strut.
  • a vault is articulated on the upper end of this same strut so as to be able to pivot in a longitudinal vertical plane of the carriage.
  • the device further comprises an operating member for pivoting the strut so as to straighten it relative to its rest position to bring the sole and the arch against the inner face of the laid pipe, at two or two points almost diametrically opposite.
  • the strut In order to allow the use of the same device for pipes of different diameters, it is advantageous for the strut to be telescopic.
  • the struts are two in number, are mounted side by side on the carriage and are each connected to one of the two outer segments of the arch made up of three segments articulated one on the other along axes s extending in the length direction of the carriage.
  • the member for operating the strut and the traction devices are advantageously constituted by hydraulic jacks supplied by a common hydraulic pump passing through a distributor.
  • the apparatus according to the invention used for the assembly of two pipes 1,2, for example concrete comprises a carriage 3 capable of rolling inside the pipes.
  • the carriage is formed by a chassis 4, preferably welded, carried by two front wheels 5 and two rear wheels 6.
  • the wheels are inclined outward so that the planes of said wheels are substantially perpendicular to the tangent to the inner periphery of the hose, at the point of contact of each wheel with said perimeter.
  • Two telescopic struts 8 are articulated on the chassis 4, by two articulated axes 7 aligned, horizontal, perpendicular to the longitudinal axis of the carriage 3, so as to be able to pivot in two longitudinal vertical planes of the carriage 3.
  • Each leg of force 8 comprises an outer tubular section 9 articulated by said axis 7 on the chassis 4, a median tubular section 10 protruding on either side of the section 9 and capable of sliding in the latter, as well as an inner section 11 exiting towards the top of the middle section 10.
  • the tubular section 11 has transverse holes making it possible to limit, by means of pins not shown or the like, the depth of insertion of the section 11 into the section 10.
  • the two tubular sections medians 10 are interconnected, substantially at their two ends by two spacers 12.
  • Each of the two tubular sections 10 has, at its lower end, a sole 13 articulated by a ball joint on the section 10.
  • Two hydraulic cylinders 14 are articulated on the rear of the chassis 4 along aligned axes of articulation 15, horizontal, perpendicular to the longitudinal axis of the carriage 3, so as to be able to pivot in the same planes as the struts 8.
  • the piston rod of each of these jacks 14 is articulated on the tubular section 10, below the chassis 4, substantially at the lower end of the section 10, by articulation axes 16.
  • a tension spring 17 extended by a threaded rod 18 is attached to each of the axes 16, the nut 19 screwed onto the threaded rod 18 taking support on a projecting tab 20 fixed at the rear on the tubular section 9.
  • the spring 17 seeks to raise the section 10 relative to the section 9 in which it can slide.
  • a vault 21 is articulated around two aligned axes, transverse, horizontal, so that said vault can pivot relative to the struts 8 in a vertical plane longitudinal of the carriage.
  • the vault 21 is made up of several curved segments 23 articulated one on the other along longitudinal axes 24.
  • the two tubular sections 11 are articulated on the two outer segments 23 of the vault.
  • a compression spring 25 is inserted between the upper end of each tubular section 11 and the arch 21, in front of the hinge pins 22, so that the springs 25 seek to pivot the arch 21 as a whole in the direction counterclockwise in fig. 1.
  • a hydraulic cylinder 26 is mounted below the chassis 4, in the median longitudinal plane of the carriage 3.
  • the cylinder 26 is articulated by a horizontal transverse axis 27 on the lower cross member 12. Its piston rod 28 which extends towards the front ends with an eye 29.
  • the jack 26 is supported in a substantially horizontal position by a stirrup 30 fixed below the chassis 4.
  • the cylinders 14 and 26 are controlled by passing through a distributor 31, by a common hydraulic pump 32 which, in the example shown, is operated manually using a lever 33.
  • the spacing of the left and right wheels (track) both at the front and at the rear is adjustable, namely by the fact that the yokes 34 bearing the wheels can be fixed with variable spacings on the chassis 4, for example using bolts 35.
  • the front wheels 5 can be steered by the fact that their yokes 34 are fixed on a common support 36 articulated by a single central bolt on the chassis 4. This orientation of the front wheels can be advantageous for example to move the device outside of pipes.
  • Pipe 1 constitutes the last pipe laid in a series of pipes, for example concrete, constituting a pipe of a sanitation system. In the case shown, this involves assembling another pipe 2 with the pipe 1.
  • each of the pipes 1, 2 comprises a female end 37 with a collar and a male end 38 intended to be fitted into the female end 37.
  • the male end 38 carries a seal 39 made of elastomer placed in a throat. provided on male end 38.
  • the device according to the invention placed inside the pipe 1, is advanced towards the free end of the latter, in this case towards the female end 37, so that its front wheels 5 are located near the female end 37.
  • the overall length of the struts 8 is adjusted so that it is somewhat greater than the diameter of the pipes.
  • the jacks 14 are not under pressure and the struts 8 occupy a more inclined position relative to the vertical than in FIG. 1, under the action of the springs 17.
  • the soles 13 and the arch 21 are not in contact with the internal face of the pipe 1.
  • the pump 32 is then maneuvered to send, using the distributor 31, pressurized oil into the jacks 14, the piston rod 15 of which thus emerges from the cylinder.
  • the flanges 13, on the one hand, and the arch 21, on the other hand, are supported at two more or less diametrically opposite points against the internal face of the hose 1, which blocks the device relative to the pipe 1, the vault 21 projecting beyond the female end piece 37 over part of its length,
  • the pipe 2 is then brought, suspended for example from a sling, its male end 38 being turned towards the female end 37 of the pipe 1, from the top and from the right in FIG. 1, in line with the pipe 1, so that the upper part of its male end 38 comes to bear by its internal face on the vault 21.
  • the piston rod 28 of the jack 26 is attached to the eye 29 one end of a cable 40, the other end of which is subject to a counter-support element 41, for example a plank or an iron bar, placed crosswise in the collar of the female end 37 of the pipe 2.
  • the person operating the device is in the immediate vicinity of the fitting area of the two pipes and can therefore, on his own, perfectly monitor the fitting operation.
  • This person can, preferably, enter the pipe to be laid as soon as the latter has, for example, descended into the excavation and is nearby above the bottom of the latter. It then always remains inside the pipe to be laid, therefore protected from any risk of the excavation falling.
  • a possible fall of the pipe to be laid would not from this moment, no more unfortunate consequence since the fall height would be low and the person inside the pipe could support it without any damage. For this reason, it even becomes possible to lay such pipes using hydraulic equipment. This is forbidden until now due to the compulsory presence of workers in the excavation, below the pipe to be laid, to guide the latter during nesting, which always implies the use of a first machine by hydraulic example to dig the excavation and a second mechanical machine to lower the pipe into the excavation.
  • the apparatus according to the invention is designed so as to leave the center of the pipes free to allow the passage of a laser beam used as a guide means for laying pipes composed of nested pipes.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sewage (AREA)

Abstract

L'appareil comprend, sur un chariot 3 roulant à l'intérieur des tuyaux 1, 2, deux jambes de forces 8 manoeuvrées par deux vérins 14 pour faire pivoter deux semelles 13 et une voûte 21 contre la face interne du tuyau 1 déjà posé, ainsi qu'un vérin 26 pour emboîter le tuyau 2 à poser dans le tuyau 1 après l'avoir fait porter sur la voûte 21 qui le maintient centre pendant l'emboîtement. Application: à la pose de tuyaux en béton pour conduites d'assainissement.The apparatus comprises, on a carriage 3 rolling inside the pipes 1, 2, two struts 8 maneuvered by two jacks 14 to rotate two flanges 13 and a vault 21 against the internal face of the pipe 1 already laid, as well as a jack 26 for fitting the pipe 2 to be placed in the pipe 1 after having placed it on the vault 21 which keeps it central during the fitting. Application: to the laying of concrete pipes for sewerage pipes.

Description

La présente invention se rapporte à un appareil pour l'assemblage par emboîtement de tuyaux de grand diamètre, en particulier de tuyaux en béton utilisés principalement pour l'assainissement.The present invention relates to an apparatus for the assembly by interlocking of large diameter pipes, in particular concrete pipes used mainly for sanitation.

La pose de tels tuyaux qui peuvent avoir des diamètres de plusieurs mètres et des masses de quelques tonnes présente des difficultés, notamment lorsque cette pose a lieu dans une fouille. On descend généralement chaque tuyau, ceinturé par une élingue accrochée à une grue, au-dessus du fond de la fouille, de manière que son about mâle se trouve sensiblement en regard de l'about femelle du tuyau posé auparavant. On accroche ensuite un appareil de traction du type à câble à une élingue placée par exemple autour d'un des tuyaux déjà posés. On relie le crochet de l'appareil de traction à l'élingue supportant le tuyau à poser et on emboîte l'about mâle du tuyau à poser dans l'about femelle du tuyau déjà posé en manoeuvrant l'appareil de traction. Pendant toute cette opération le tuyau doit rester suspendu à l'élingue de levage.The laying of such pipes which can have diameters of several meters and masses of a few tonnes presents difficulties, especially when this laying takes place in a search. Each pipe is generally lowered, surrounded by a sling attached to a crane, above the bottom of the excavation, so that its male end is located substantially opposite the female end of the pipe previously laid. A cable type traction device is then hooked to a sling placed for example around one of the pipes already laid. The hook of the traction device is connected to the sling supporting the pipe to be laid and the male end of the pipe to be laid is fitted into the female end of the pipe already laid by operating the traction device. During this whole operation the hose must remain suspended from the lifting sling.

Cet emboîtement doit se faire avec une très grande précision, notamment lorsque l'étanchéité entre deux tuyaux successifs est assurée simplement par un joint d'étanchéité en élastomère introduit avant la pose dans une gorge extérieure de l'about mâle de chaque tuyau. En effet, même si l'on enduit le joint d'étanchéité de l'about mâle du tuyau à poser ainsi que l'about femelle du tuyau déjà posé d'un lubrifiant, par exemple de savon, une très légère excentration de l'about mâle par rapport à l'about femelle peut déjà provoquer un endommagement du joint d'étanchéité lors de la manoeuvre de l'appareil de traction. Il est donc nécessaire de faire appel à plusieurs ouvriers qui, de l'extérieur des tuyaux, guident le tuyau à poser pendant l'emboîtement. Cela présente de graves dangers de blessures auxquels s'ajoutent, lors de la pose en fouille, les risques d'éboulement. Malgré cela, il arrive encore très fréquemment que le joint d'étanchéité soit endommagé, notamment du fait que l'ouvrier manoeuvrant l'appareil de traction est éloigné de la zone d'assemblage et ne peut donc pas suivre l'évolution de l'opération d'emboîtement.This fitting must be done with great precision, especially when the seal between two successive pipes is simply ensured by an elastomer seal introduced before installation in an external groove of the male end of each pipe. In fact, even if the sealing ring of the male end of the pipe to be laid and the female end of the pipe already laid are coated with a lubricant, for example soap, a very slight offset of the male connector relative to female connector can already cause damage to the seal when operating the traction device. So it is necessary to call on several workers who, from the outside of the pipes, guide the pipe to be laid during nesting. This presents serious danger of injury, to which is added, when laying in a excavation, the risk of landslides. Despite this, it still very often happens that the seal is damaged, in particular because the worker operating the traction device is far from the assembly area and therefore cannot follow the evolution of the nesting operation.

L'emboîtement de deux tuyaux peut également s'effectuer par traction à l'intérieur des tuyaux, à l'aide d'un appareil de traction prenant généralement appui, d'une part, sur un regard placé tous les quarante à soixante mètres dans de telles conduites d'assainissement et, d'autre part, sur un madrier, une barre de fer ou un élément analogue appliqué en travers contre le collet intérieur de butée de l'about femelle du tuyau à poser. Dans ce cas également, il est cependant nécessaire de prévoir des ouvriers supplémentaires pour assurer le guidage du tuyau à poser pendant l'emboîtement, et l'ouvrier manoeuvrant l'appareil de traction est éloigné du tuyau à emboîter.The interlocking of two pipes can also be carried out by traction inside the pipes, using a traction device generally supported, on the one hand, on a manhole placed every forty to sixty meters in such sanitation pipes and, on the other hand, on a plank, an iron bar or the like applied crosswise against the inner stop collar of the female end of the pipe to be laid. In this case also, however, it is necessary to provide additional workers to guide the pipe to be laid during nesting, and the worker operating the traction device is distant from the pipe to be fitted.

La pose de tels tuyaux en fouille exige jusqu'à présent l'utilisation d'un premier engin par exemple hydraulique pour creuser la fouille et d'un second engin mécanique pour descendre les tuyaux dans la fouille. Il est en effet interdit de travailler sous une charge suspendue à un engin hydraulique puisqu'une simple rupture de flexible, par exemple, peut provoquer la chute de la charge. Cette nécessité de disposer de deux engins alourdit sensiblement le coût de la pose de tels tuyaux.The laying of such pipes in excavation so far requires the use of a first machine, for example hydraulic to dig the excavation and a second mechanical machine to descend the pipes into the excavation. It is indeed forbidden to work under a load suspended from a hydraulic machine since a simple rupture of the hose, for example, can cause the load to fall. This need to have two machines significantly increases the cost of laying such pipes.

La présente invention a pour objet un appareil qui simplifie l'assemblage par emboîtement de tuyaux de grand diamètre et réduit sensiblement les risques de la pose de tels tuyaux. L'invention a également pour objet un appareil qui permet de réduire le coût de la pose de ces tuyaux.The present invention relates to an apparatus which simplifies the assembly by fitting of large diameter pipes and significantly reduces the risks of laying such pipes. The invention also relates to an apparatus which makes it possible to reduce the cost of laying these pipes.

L'appareil conforme à l'invention comprend un chariot susceptible de rouler à l'intérieur des tuyaux posés, sur le fond de ces derniers, Sur ce chariot sont montés un dispositif d'immobilisation du chariot dans le dernier tuyau posé, à l'about femelle de ce dernier, et de mise à niveau et de centrage de l'about mâle du tuyau à poser sur l'about femelle du tuyau posé. Par ailleurs, sur ce même chariot est monté un dispositif de traction prenant appui sur le tuyau à poser pour emboîter l'about mâle de ce dernier dans l'about femelle du tuyau posé.The apparatus according to the invention comprises a carriage capable of rolling inside the pipes laid, on the bottom of the latter. On this carriage are mounted a device for immobilizing the carriage in the last pipe laid, at the female end of the latter, and leveling and centering of the male end of the pipe to be placed on the female end of the laid pipe. Furthermore, on this same carriage is mounted a traction device bearing on the pipe to be laid to fit the male end of the latter into the female end of the laid pipe.

Le chariot permet de déplacer l'appareil au fur et à mesure de la progression de la pose de la canalisation, par assemblage de tuyaux élémentaires. Pour chaque tuyau à poser, on immobilise le chariot dans le dernier tuyau posé, on met à niveau et on centre le tuyau à poser par rapport au tuyau déjà posé et on emboîte le tuyau à poser dans le tuyau posé par manoeuvre de l'appareil de traction.The trolley makes it possible to move the device as the laying of the pipeline progresses, by assembling elementary pipes. For each pipe to be laid, the trolley is immobilized in the last pipe laid, the pipe to be laid is leveled and centered in relation to the pipe already laid and the pipe to be laid is fitted into the pipe laid by operating the device. traction.

Suivant un mode de réalisation avantageux de l'invention, le dispositif d'immobilisation et de mise à niveau et de centrage comprend au moins une jambe de force articulée entre ses deux extrémités sur le chariot de manière à pouvoir pivoter dans un plan vertical longitudinal du chariot. Une semelle est articulée sur l'extrémité inférieure de cette jambe de force. Par ailleurs, une voûte est articulée sur l'extrémité supérieure de cette même jambe de force de manière à pouvoir pivoter dans un plan vertical longitudinal du chariot. Le dispositif comprend en outre un organe de manoeuvre pour faire pivoter la jambe de force de manière à la redresser par rapport à sa position de repos pour faire porter la semelle et la voûte contre la face intérieure du tuyau posé, en deux deux points à peu près diamétralement opposés.According to an advantageous embodiment of the invention, the immobilization and leveling and centering device comprises at least one strut articulated between its two ends on the carriage so as to be able to pivot in a longitudinal vertical plane of the cart. A sole is articulated on the lower end of this strut. Furthermore, a vault is articulated on the upper end of this same strut so as to be able to pivot in a longitudinal vertical plane of the carriage. The device further comprises an operating member for pivoting the strut so as to straighten it relative to its rest position to bring the sole and the arch against the inner face of the laid pipe, at two or two points almost diametrically opposite.

Afin de permettre l'utilisation d'un même appareil pour des tuyaux de diamètres différents, il est avantageux que la jambe de force soit télescopique.In order to allow the use of the same device for pipes of different diameters, it is advantageous for the strut to be telescopic.

De préférence, les jambes de force sont au nombre de deux, sont montées côte à côte sur le chariot et sont reliées chacune à l'un des deux segments extérieurs de la voûte composée de trois segments articulés les uns sur les autres suivant des axes s'étendant dans le sens de la longueur du chariot.Preferably, the struts are two in number, are mounted side by side on the carriage and are each connected to one of the two outer segments of the arch made up of three segments articulated one on the other along axes s extending in the length direction of the carriage.

Pour faciliter la manoeuvre de l'appareil, l'organe de manoeuvre de la jambe de force et les dispositifs de traction sont avantageusement constitués par des vérins hydrauliques alimentés par une pompe hydraulique commune en passant par un distributeur.To facilitate the operation of the apparatus, the member for operating the strut and the traction devices are advantageously constituted by hydraulic jacks supplied by a common hydraulic pump passing through a distributor.

D'autres caractéristiques et avantages de l'objet de l'invention apparaîtront à la lecture de la description ci-après d'un exemple de réalisation non limitatif d'un appareil conforme à l'invention; sur ce dessin :

  • la fig. 1 est une vue en élévation latérale d'un mode de réalisation de l'appareil conforme à l'invention, à l'intérieur d'un tuyau représenté en coupe longitudinale verticale;
  • la fig. 2 est une vue prise dans le sens de la flèche II sur la fig. 1.
Other characteristics and advantages of the subject of the invention will appear on reading the following description of a nonlimiting exemplary embodiment of an apparatus according to the invention; on this drawing :
  • fig. 1 is a side elevational view of an embodiment of the apparatus according to the invention, inside a pipe shown in vertical longitudinal section;
  • fig. 2 is a view taken in the direction of arrow II in FIG. 1.

L'appareil suivant l'invention servant à l'assemblage de deux tuyaux 1,2, par exemple en béton, comprend un chariot 3 susceptible de rouler à l'intérieur des tuyaux. Le chariot est formé d'un châssis 4, de préférence soudé, porté par deux roues avant 5 et deux roues arrière 6. Les roues sont inclinées vers l'extérieur de manière que les plans desdites roues soient sensiblement perpendiculaires à la tangente au pourtour intérieur du tuyau, au point de contact de chaque roue avec ledit pourtour.The apparatus according to the invention used for the assembly of two pipes 1,2, for example concrete, comprises a carriage 3 capable of rolling inside the pipes. The carriage is formed by a chassis 4, preferably welded, carried by two front wheels 5 and two rear wheels 6. The wheels are inclined outward so that the planes of said wheels are substantially perpendicular to the tangent to the inner periphery of the hose, at the point of contact of each wheel with said perimeter.

Deux jambes de force 8 télescopiques sont articulées sur le châssis 4, par deux axes d'articulation 7 alignés, horizontaux, perpendiculaires à l'axe longitudinal du chariot 3, de manière à pouvoir pivoter dans deux plans verticaux longitudinaux du chariot 3. Chaque jambe de force 8 comprend un tronçon tubulaire extérieur 9 articulé par ledit axe 7 sur le châssis 4, un tronçon tubulaire médian 10 dépassant de part et d'autre le tronçon 9 et pouvant coulisser dans ce dernier, ainsi qu'un tronçon intérieur 11 sortant vers le haut du tronçon médian 10. Le tronçon tubulaire 11 comporte des trous transversaux permettant de limiter, à l'aide de goupilles non représentées ou d'organes analogues, la profondeur d'enfoncement du tronçon 11 dans le tronçon 10. Les deux tronçons tubulaires médians 10 sont reliés entre eux, sensiblement à leurs deux extrémités par deux entretoises 12.Two telescopic struts 8 are articulated on the chassis 4, by two articulated axes 7 aligned, horizontal, perpendicular to the longitudinal axis of the carriage 3, so as to be able to pivot in two longitudinal vertical planes of the carriage 3. Each leg of force 8 comprises an outer tubular section 9 articulated by said axis 7 on the chassis 4, a median tubular section 10 protruding on either side of the section 9 and capable of sliding in the latter, as well as an inner section 11 exiting towards the top of the middle section 10. The tubular section 11 has transverse holes making it possible to limit, by means of pins not shown or the like, the depth of insertion of the section 11 into the section 10. The two tubular sections medians 10 are interconnected, substantially at their two ends by two spacers 12.

Chacun des deux tronçons tubulaires 10 présente, à son extrémité inférieure, une semelle 13 articulée par une rotule sur le tronçon 10.Each of the two tubular sections 10 has, at its lower end, a sole 13 articulated by a ball joint on the section 10.

Deux vérins hydrauliques 14 sont articulés sur l'arrière du châssis 4 suivant des axes d'articulation 15 alignés, horizontaux, perpendiculaires à l'axe longitudinal du chariot 3, de manière à pouvoir pivoter dans les mêmes plans que les jambes de force 8. La tige de piston de chacun de ces vérins 14 est articulée sur le tronçon tubulaire 10, en dessous du châssis 4, sensiblement à l'extrémité inférieure du tronçon 10, par des axes d'articulation 16. Un ressort de traction 17 prolongé par une tige filetée 18 est accroché à chacun des axes 16, l'écrou 19 vissé sur la tige filetée 18 prenant appui sur une patte saillante 20 fixée à l'arrière sur le tronçon tubulaire 9. Le ressort 17 cherche à faire monter le tronçon 10 par rapport au tronçon 9 dans lequel il peut coulisser.Two hydraulic cylinders 14 are articulated on the rear of the chassis 4 along aligned axes of articulation 15, horizontal, perpendicular to the longitudinal axis of the carriage 3, so as to be able to pivot in the same planes as the struts 8. The piston rod of each of these jacks 14 is articulated on the tubular section 10, below the chassis 4, substantially at the lower end of the section 10, by articulation axes 16. A tension spring 17 extended by a threaded rod 18 is attached to each of the axes 16, the nut 19 screwed onto the threaded rod 18 taking support on a projecting tab 20 fixed at the rear on the tubular section 9. The spring 17 seeks to raise the section 10 relative to the section 9 in which it can slide.

Sur l'extrémité supérieure des deux tronçons tubulaires 11 des jambes de force 8, une voûte 21 est articulée autour de deux axes 22 alignés, transversaux, horizontaux, de manière que ladite voûte puisse pivoter par rapport aux jambes de force 8 dans un plan vertical longitudinal du chariot. La voûte 21 se compose de plusieurs segments courbes 23 articulés les uns sur les autres suivant des axes longitudinaux 24. Les deux tronçons tubulaires 11 sont articulés sur les deux segments extérieures 23 de la voûte. Un ressort de compression 25 est inséré entre l'extrémité supérieure de chaque tronçon tubulaire 11 et la voûte 21, en avant des axes d'articulation 22, de manière que les ressorts 25 cherchent à faire pivoter la voûte 21 dans son ensemble dans le sens contraire des aiguilles d'une montre sur la fig. 1.On the upper end of the two tubular sections 11 of the struts 8, a vault 21 is articulated around two aligned axes, transverse, horizontal, so that said vault can pivot relative to the struts 8 in a vertical plane longitudinal of the carriage. The vault 21 is made up of several curved segments 23 articulated one on the other along longitudinal axes 24. The two tubular sections 11 are articulated on the two outer segments 23 of the vault. A compression spring 25 is inserted between the upper end of each tubular section 11 and the arch 21, in front of the hinge pins 22, so that the springs 25 seek to pivot the arch 21 as a whole in the direction counterclockwise in fig. 1.

Un vérin hydraulique 26 est monté en dessous du châssis 4, dans le plan longitudinal médian du chariot 3. Le vérin 26 est articulé par un axe transversal horizontal 27 sur la traverse inférieure 12. Sa tige de piston 28 qui s'étend vers l'avant se termine par un oeil 29. Le vérin 26 est soutenu dans une position sensiblement horizontale par un étrier 30 fixé en dessous du châssis 4.A hydraulic cylinder 26 is mounted below the chassis 4, in the median longitudinal plane of the carriage 3. The cylinder 26 is articulated by a horizontal transverse axis 27 on the lower cross member 12. Its piston rod 28 which extends towards the front ends with an eye 29. The jack 26 is supported in a substantially horizontal position by a stirrup 30 fixed below the chassis 4.

La commande des vérins 14 et 26 s'effectue, en passant par un distributeur 31, par une pompe hydraulique 32 commune qui, dans l'exemple représenté, est manoeuvrée manuellement à l'aide d'un levier 33.The cylinders 14 and 26 are controlled by passing through a distributor 31, by a common hydraulic pump 32 which, in the example shown, is operated manually using a lever 33.

On reconnaît sur la fig. 2 que l'écartement des roues de gauche et de droite (voie) tant à l'avant qu'à l'arrière est réglable, à savoir par le fait que les chapes 34 portant les roues peuvent être fixées avec des écartements variables sur le châssis 4, par exemple à l'aide de boulons 35. Par ailleurs, les roues avant 5 sont orientables par le fait que leurs chapes 34 sont fixées sur un support commun 36 articulé par un unique boulon central sur le châssis 4. Cette orientation des roues avant peut être avantageuse par exemple pour déplacer le dispositif à l'extérieur de tuyaux.We recognize in fig. 2 that the spacing of the left and right wheels (track) both at the front and at the rear is adjustable, namely by the fact that the yokes 34 bearing the wheels can be fixed with variable spacings on the chassis 4, for example using bolts 35. Furthermore, the front wheels 5 can be steered by the fact that their yokes 34 are fixed on a common support 36 articulated by a single central bolt on the chassis 4. This orientation of the front wheels can be advantageous for example to move the device outside of pipes.

On va décrire ci-après le mode de pose de tuyaux à l'aide du dispositif conforme à l'invention, en vue de mieux faire comprendre le fonctionnement de ce dernier.We will describe below the method of laying pipes using the device according to the invention, in order to better understand the operation of the latter.

Le tuyau 1 constitue le dernier tuyau posé d'une série de tuyaux, par exemple en béton, constituant une conduite d'un système d'assainissement. Il s'agit dans le cas représenté d'assembler un autre tuyau 2 avec le tuyau 1.Pipe 1 constitutes the last pipe laid in a series of pipes, for example concrete, constituting a pipe of a sanitation system. In the case shown, this involves assembling another pipe 2 with the pipe 1.

De façon usuelle, chacun des tuyaux 1, 2 comporte un about femelle 37 à collet et un about mâle 38 destiné à être emboîté dans l'about femelle 37. L'about mâle 38 porte un joint d'étanchéité 39 en élastomère posé dans une gorge. prévue sur l'about mâle 38.Usually, each of the pipes 1, 2 comprises a female end 37 with a collar and a male end 38 intended to be fitted into the female end 37. The male end 38 carries a seal 39 made of elastomer placed in a throat. provided on male end 38.

L'appareil conforme à l'invention, placé à l'intérieur du tuyau 1, est avancé en direction de l'extrémité libre de ce dernier, en l'occurrence en direction de l'about femelle 37, de manière que ses roues avant 5 se trouvent à proximité de l'about femelle 37. La longueur hors tout des jambes de force 8 est réglée de manière qu'elle soit quelque peu supérieure au diamètre des tuyaux. Pendant cette mise en position, les vérins 14 ne sont pas sous pression et les jambes de force 8 occupent une position plus inclinée par rapport à la verticale que sur la fig. 1, sous l'action des ressorts 17. Les semelles 13 et la voûte 21 ne sont pas en contact avec la face interne du tuyau 1.The device according to the invention, placed inside the pipe 1, is advanced towards the free end of the latter, in this case towards the female end 37, so that its front wheels 5 are located near the female end 37. The overall length of the struts 8 is adjusted so that it is somewhat greater than the diameter of the pipes. During this positioning, the jacks 14 are not under pressure and the struts 8 occupy a more inclined position relative to the vertical than in FIG. 1, under the action of the springs 17. The soles 13 and the arch 21 are not in contact with the internal face of the pipe 1.

On manoeuvre ensuite la pompe 32 pour envoyer à l'aide du distributeur 31 de l'huile sous pression dans les vérins 14 dont la tige de piston 15 se dégage ainsi du cylindre. Cela imprime aux jambes de force 8 un mouvement de pivotement dans le sens contraire des aiguilles d'une montre sur la fig. 1, autour de l'axe d'articulation 7. De ce fait, les semelles 13, d'une part, et la voûte 21, d'autre part, sont appuyées en deux points plus ou moins diamétralement opposés contre la face interne du tuyau 1, ce qui bloque l'appareil par rapport au tuyau 1, la voûte 21 dépassant l'about femelle 37 sur une partie de sa longueur,The pump 32 is then maneuvered to send, using the distributor 31, pressurized oil into the jacks 14, the piston rod 15 of which thus emerges from the cylinder. This gives the struts 8 a counter-clockwise pivoting movement in FIG. 1, around the axis of articulation 7. As a result, the flanges 13, on the one hand, and the arch 21, on the other hand, are supported at two more or less diametrically opposite points against the internal face of the hose 1, which blocks the device relative to the pipe 1, the vault 21 projecting beyond the female end piece 37 over part of its length,

On amène ensuite le tuyau 2, suspendu par exemple à une élingue, son about mâle 38 étant tourné vers l'about femelle 37 du tuyau 1, depuis le haut et depuis la droite sur la fig. 1, dans l'alignement du tuyau 1, de manière que la partie supérieure de son l'about mâle 38 vienne porter par sa face interne sur la voûte 21. On fixe à l'oeil 29 de la tige de piston 28 du vérin 26 une extrémité d'un câble 40 dont l'autre extrémité est assujettie à un élément de contre- appui 41, par exemple un madrier ou une barre de fer, placé en travers dans le collet de l'about femelle 37 du tuyau 2. Par envoi d'huile sous pression de la pompe 32, en passant par le distributeur 31, dans le vérin 26, le tuyau 2, maintenu centré par rapport au tuyau 1 grâce à son appui sur la voûte 21, est poussé en direction du tuyau 1 jusqu'à ce que son about mâle 38 s'emboîte dans l'about femelle 37 du tuyau 1. Ce centrage assure une introduction correcte du joint d'étanchéité 39 dans le collet de l'about femelle 37 du tuyau 1, d'où un assemblage parfaitement étanche des deux tuyaux 1 et 2.The pipe 2 is then brought, suspended for example from a sling, its male end 38 being turned towards the female end 37 of the pipe 1, from the top and from the right in FIG. 1, in line with the pipe 1, so that the upper part of its male end 38 comes to bear by its internal face on the vault 21. The piston rod 28 of the jack 26 is attached to the eye 29 one end of a cable 40, the other end of which is subject to a counter-support element 41, for example a plank or an iron bar, placed crosswise in the collar of the female end 37 of the pipe 2. By sending of pressurized oil from pump 32, passing through the distributor 31, in the cylinder 26, the pipe 2, kept centered with respect to the pipe 1 thanks to its support on the arch 21, is pushed towards the pipe 1 until its male end 38 fits into the female end 37 of the pipe 1. This centering ensures correct insertion of the seal 39 into the collar of the female end 37 of the pipe 1, whence a perfectly sealed assembly of the two pipes 1 and 2.

Après emboîtement du tuyau 2 dans le tuyau 1 et après calage du tuyau 2, on relache la pression dans le cylindre 26, pour pouvoir décrocher le câble de traction 40, et dans les cylindres 14 pour débloquer l'appareil suivant l'invention. On fait alors avancer cet appareil dans le tuyau 2 venant d'être posé, jusqu'à proximité de l'about femelle 37 de ce dernier. On bloque l'appareil à cet endroit et on procède à la pose du tuyau suivant de la manière qui vient d'être décrite.After fitting the pipe 2 into the pipe 1 and after wedging the pipe 2, the pressure is released in the cylinder 26, in order to be able to unhook the traction cable 40, and in the cylinders 14 to unlock the apparatus according to the invention. This device is then advanced in the pipe 2 which has just been laid, as far as the female end 37 of the latter. The device is blocked at this location and the next pipe is laid in the manner just described.

Il y a lieu de noter que la personne manoeuvrant l'appareil se trouve à proximité immédiate de la zone d'emboîtement des deux tuyaux et peut donc, à elle seule, parfaitement surveiller l'opération d'emboîtement. Cette personne peut, de préférence, pénétrer dans le tuyau à poser dès que ce dernier est par exemple descendu dans la fouille et se trouve à proximité au-dessus du fond de cette dernière. Elle reste ensuite toujours à l'intérieur du tuyau à poser, donc à l'abri de tout risque d'éboulement de la fouille. Par ailleurs, une éventuelle chute du tuyau à poser n'aurait, à partir de ce moment, plus de conséquence fâcheuse puisque la hauteur de chute serait faible et la personne se trouvant à l'intérieur du tuyau pourrait la supporter sans aucun dommage. Pour cette raison, il devient même possible de poser de tels tuyaux à l'aide d'engins hydrauliques. Cela est interdit jusqu'à présent par suite de la présence obligatoire d'ouvriers dans la fouille, en dessous du tuyau à poser, pour guider ce dernier en cours d'emboîtement, ce qui implique toujours l'utilisation d'un premier engin par exemple hydraulique pour creuser la fouille et d'un second engin mécanique pour descendre le tuyau dans la fouille.It should be noted that the person operating the device is in the immediate vicinity of the fitting area of the two pipes and can therefore, on his own, perfectly monitor the fitting operation. This person can, preferably, enter the pipe to be laid as soon as the latter has, for example, descended into the excavation and is nearby above the bottom of the latter. It then always remains inside the pipe to be laid, therefore protected from any risk of the excavation falling. Furthermore, a possible fall of the pipe to be laid would not from this moment, no more unfortunate consequence since the fall height would be low and the person inside the pipe could support it without any damage. For this reason, it even becomes possible to lay such pipes using hydraulic equipment. This is forbidden until now due to the compulsory presence of workers in the excavation, below the pipe to be laid, to guide the latter during nesting, which always implies the use of a first machine by hydraulic example to dig the excavation and a second mechanical machine to lower the pipe into the excavation.

Il y a lieu de noter que l'appareil conforme à l'invention est conçu de manière à laisser dégagé le centre des tuyaux pour permettre le passage d'un rayon laser utilisé comme moyen de guidage pour la pose de conduites composées de tuyaux emboîtés.It should be noted that the apparatus according to the invention is designed so as to leave the center of the pipes free to allow the passage of a laser beam used as a guide means for laying pipes composed of nested pipes.

Il va de soi qu'il est possible de remplacer la plupart des éléments de l'appareil tel que décrit ci-dessus et représenté sur le dessin annexé par des éléments équivalents sans pour autant sortir du cadre de l'invention.It goes without saying that it is possible to replace most of the elements of the apparatus as described above and shown in the appended drawing by equivalent elements without departing from the scope of the invention.

Claims (7)

1. Appareil pour l'assemblage par emboîtement de tuyaux de grand diamètre, caractérisé par le fait qu'il comprend, montés sur un chariot (3) susceptible de rouler à l'intérieur du tuyau posé, un dispositif d'immobilisation du chariot dans le tuyau posé, à l'about femelle (37) de ce dernier, et de mise à niveau et centrage de l'about mâle (38) du tuyau (2) à poser par rapport à l'about femelle du tuyau posé, ainsi qu'un dispositif de traction prenant appui sur le tuyau à poser pour emboîter l'about mâle de ce dernier dans l'about femelle du tuyau déjà posé.1. Apparatus for the assembly by interlocking of large diameter pipes, characterized in that it comprises, mounted on a carriage (3) capable of rolling inside the laid pipe, a device for immobilizing the carriage in the pipe laid, at the female end (37) of the latter, and for leveling and centering the male end (38) of the pipe (2) to be laid relative to the female end of the pipe laid, thus that a traction device resting on the pipe to be laid to fit the male end of the latter into the female end of the pipe already laid. 2. Appareil suivant la revendication 1, caractérisé par le fait que le dispositif d'immobilisation et de mise à niveau et centrage comprend au moins une jambe de force (8) articulée entre ses deux extrémités sur le chariot de manière à pouvoir pivoter dans un plan vertical longitudinal du chariot, une semelle (13) articulée sur l'extrémité inférieure de la jambe de force, une voûte (21) articulée sur l'extrémité supérieure de la jambe de force de manière à pouvoir pivoter dans un plan vertical longitudinal du chariot, ainsi qu'un organe de manoeuvre (14), pour faire pivoter la jambe de force de manière à faire porter la semelle et la voûte contre la face intérieure du tuyau posé, en deux points à peu près diamétralement opposés.2. Apparatus according to claim 1, characterized in that the immobilization and leveling and centering device comprises at least one strut (8) articulated between its two ends on the carriage so as to be able to pivot in a longitudinal vertical plane of the carriage, a sole (13) articulated on the lower end of the strut, a vault (21) articulated on the upper end of the strut so as to be able to pivot in a longitudinal vertical plane of the carriage, as well as an operating member (14), for pivoting the strut so as to bring the sole and the arch against the inner face of the laid pipe, at two roughly diametrically opposite points. 3. Appareil suivant la revendication 2, caractérisé par le fait que la jambe de force est télescopique.3. Apparatus according to claim 2, characterized in that the strut is telescopic. 4. Appareil suivant l'une quelconque des revendications précédentes, caractérisé par le fait que la voûte se compose de trois segments (23) articulés les uns sur les autres suivant des axes d'articulation longitudinaux et que les jambes de force sont au nombre de deux, sont montées côte à côte sur le chariot et sont reliées chacune à l'un des deux segments extérieurs de la voûte.4. Apparatus according to any one of the preceding claims, characterized in that the arch consists of three segments (23) articulated one on the other along longitudinal axes of articulation and that the struts are one of two, are mounted side by side on the carriage and are each connected to one of the two outer segments of the arch. 5. Appareil suivant l'une quelconque des revendications précédentes, caractérisé par le fait que ledit organe de manoeuvre comprend un vérin hydraulique articulé sur le chariot et sur l'extrémité inférieure de la jambe de force et un ressort de traction (17) agissant sur la jambe de force à l'encontre de la force du vérin.5. Apparatus according to any one of the preceding claims, characterized in that said operating member comprises a hydraulic cylinder articulated on the carriage and on the lower end of the strut and a tension spring (17) acting on the strut against the force of the jack. 6.. Appareil suivant l'une quelconque des revendications précédentes, caractérisé par le fait que le dispositif de traction est constitué par un vérin hydraulique (26) et que ce dernier ainsi que le vérin de manoeuvre de la jambe de force sont alimentés par une pompe hydraulique commune (32) en passant par un distributeur (31).6. Apparatus according to any one of the preceding claims, characterized in that the traction device is constituted by a hydraulic cylinder (26) and that the latter as well as the actuator for actuating the strut are supplied by a common hydraulic pump (32) passing through a distributor (31). 7. Appareil suivant l'une quelconque des revendications précédentes, caractérisé par le fait que les roues (5, 6) du chariot sont inclinées vers l'extérieur.7. Apparatus according to any one of the preceding claims, characterized in that the wheels (5, 6) of the carriage are inclined outward.
EP78100212A 1977-06-22 1978-06-21 Apparatus for assembling large diameter pipes by insertion Expired EP0000179B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7719121 1977-06-22
FR7719121A FR2395448A1 (en) 1977-06-22 1977-06-22 APPARATUS FOR THE FITTING OF LARGE DIAMETER PIPES

Publications (2)

Publication Number Publication Date
EP0000179A1 true EP0000179A1 (en) 1979-01-10
EP0000179B1 EP0000179B1 (en) 1981-05-20

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EP78100212A Expired EP0000179B1 (en) 1977-06-22 1978-06-21 Apparatus for assembling large diameter pipes by insertion

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US (1) US4209269A (en)
EP (1) EP0000179B1 (en)
DE (1) DE2817632A1 (en)
FR (1) FR2395448A1 (en)
IT (1) IT1096775B (en)

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Also Published As

Publication number Publication date
DE2817632C2 (en) 1987-02-05
FR2395448A1 (en) 1979-01-19
FR2395448B1 (en) 1982-12-31
US4209269A (en) 1980-06-24
EP0000179B1 (en) 1981-05-20
IT1096775B (en) 1985-08-26
IT7824879A0 (en) 1978-06-22
DE2817632A1 (en) 1979-01-11

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