EP0012676A1 - Machine for externally coating objects such as tubes, particularly with concrete - Google Patents

Machine for externally coating objects such as tubes, particularly with concrete Download PDF

Info

Publication number
EP0012676A1
EP0012676A1 EP19790400979 EP79400979A EP0012676A1 EP 0012676 A1 EP0012676 A1 EP 0012676A1 EP 19790400979 EP19790400979 EP 19790400979 EP 79400979 A EP79400979 A EP 79400979A EP 0012676 A1 EP0012676 A1 EP 0012676A1
Authority
EP
European Patent Office
Prior art keywords
hopper
drums
concrete
machine
rotation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP19790400979
Other languages
German (de)
French (fr)
Other versions
EP0012676B1 (en
Inventor
Michel Gravier
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.)
TUYAUX BONNA Ste
Original Assignee
TUYAUX BONNA 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.)
Filing date
Publication date
Application filed by TUYAUX BONNA Ste filed Critical TUYAUX BONNA Ste
Publication of EP0012676A1 publication Critical patent/EP0012676A1/en
Application granted granted Critical
Publication of EP0012676B1 publication Critical patent/EP0012676B1/en
Expired legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B19/00—Machines or methods for applying the material to surfaces to form a permanent layer thereon
    • B28B19/0038—Machines or methods for applying the material to surfaces to form a permanent layer thereon lining the outer wall of hollow objects, e.g. pipes

Definitions

  • Machine for coating externally, in particular with concrete, parts such as pipes.
  • the present invention relates to a machine for coating externally, in particular with concrete, parts such as pipes.
  • the invention applies more particularly to the manufacture of concrete pipes and in particular to the installation of an external coating ensuring the protection of the turns of the hooped pipes.
  • a wedge-shaped throttle is provided at the outlet of the hopper between an oblique wall and the part to be coated, but this throttle is not not located above the part to be coated and the benefit of the support of the coating material by the part itself is thus lost, or else when the outlet opening of the hopper opens out above the part to be coated, the lower front wall of the hopper no longer extends obliquely above said piece so as to form a wedge-shaped space as before.
  • the concrete is poured at the base of a hopper onto a pipe to be coated rotating slowly above it, the concrete being vibrated during its passage through a short area of vibration at the outlet of the hopper,
  • the duration of which is notably a function of the frequency and amplitude of the vibrations.
  • the vibrating zone is relatively narrow and the vibrations are carried out in an anarchic way, it is necessary to slow down the rotation of the pipe to be coated and to reduce the exit section of the hopper so that the concrete is vibrated long enough. This results in disproportionately long manufacturing times and a noticeable slowdown in production simply because of this simple operation.
  • the object of the present invention is therefore to propose a machine for coating externally, in particular with concrete, parts such as pipes, which makes it possible to considerably reduce the time of the operation while nevertheless ensuring excellent compactness of the concrete of the coating. .
  • the machine for externally coating in particular with concrete, tubular parts of revolution such as pipes, comprises at least two rotating supports intended to support the part at its ends and to cause it to rotate on it.
  • a concrete storage hopper having an outlet opening which opens above the location reserved for the part and a bottom wall which extends above said location and vibrating members arranged in the outlet opening of the hopper in the vicinity of the part to be coated, said rotary supports being coaxial rotary drums displaceable in relation to one another and arranged so as to be able to penetrate into the bore of the tubular part for support it, while the hopper outlet is offset behind the vertical plane passing through the common axis of the drums, considering the direction of rotation of the drums and the bottom wall of the hopper is inclined obliquely t above the location of the part so as to delimit with it a cross-sectional space in the form of a corner directed in the direction of rotation.
  • the vibrating members situated at the outlet of the hopper can be juxtaposed fins or teeth of triangular shape known per se arranged so as to conform substantially to a cross section in the form of a wedge of the space delimited between the oblique wall of the hopper and the part to be coated, said fins or teeth vibrating in synchronism parallel to the axis of the drums.
  • the vibrating members can also consist of vibrating needles known per se juxtaposed along the part to be coated, in the space with a wedge-shaped section surmounting the latter.
  • an adjustable smoother articulated on the hopper is provided at the tip of the spout of the hopper.
  • the proposed solution essentially consists in combining the effects of organized vibrations developing in a preferred direction and the compaction of the coating material which is literally extruded through an outlet conduit whose section is narrowing.
  • the machine comprises a fixed frame 1 and a movable frame 2 mounted on a slide 3 so that it can be moved away from or close to the fixed frame, the two frames coaxially supporting rotary drums 4 and 5, driven in rotation by drive means housed in said frames.
  • the machine further comprises a hopper 6 supported laterally by lateral frames 7 and 8 adjustable in height above the location between the two frames 1 and 2, the outlet of the hopper being a slot 9 of section adjustable at for example, an articulated or sliding shutter, said slot being open at the lower part of the hopper and extending longitudinally, parallel to the axis of rotation of the drums 4 and 5, slightly behind the vertical plane passing through said axis considering the direction of rotation of the drums (clockwise in Figure 1).
  • the lower part of the wall of the hopper situated towards the front in the direction of rotation of the drums comprises a projection or extension in the form of a spout 10, extending obliquely above the axis of the drums 4 and 5, way to die limit with the part to be coated, which in this case is a concrete hooped pipe 11, a wedge-shaped space whose point is directed in the direction of rotation of the pipe.
  • a vibrating comb 12 essentially constituted by a rear plate 13, supporting several juxtaposed teeth 14, of triangular shape, substantially matching a cross section of the wedge space between the pipe 11 and the sheet metal spout of the hopper.
  • the comb 12 has at its ends pins 15 and 16 mounted sliding along their axis in bearings formed in the wall of the lower part of the hopper, the pin 16 being connected to the rod of a vibrating hydraulic cylinder 17 secured to the frame fixed 1.
  • a smoother 18 placed following the extension of the front wall of the hopper 6, this smoother being supported at an adjustable height above the pipe 11 by means of articulated support arms 19 at 20 on said front wall of the hopper.
  • the hopper is then lowered near the pipe and the tabmours 4 and 5 are rotated, which causes the rotation of the pipe 11 in the same direction, while the outlet slot of the hopper is open and lets the concrete flow 21 stored therein, said concrete spreading in a surface layer 22 on the outer surface of the wall of the pipe 11.
  • the concrete fills the corner space placed under the spout 10 where it is subjected to vibrations parallel to the axis of the pipe.
  • the combined effects of the vibrations and the radial compression to which it is subjected due to the reduction in the passage height under the sheet metal of the spout 10 of the hopper very significantly improves the compactness of the concrete as well as the attachment to the pipe of the coating layer.
  • the compacted concrete layer On leaving the spout 10 of the hopper, the compacted concrete layer finally passes under the height-adjustable smoother 18 which laminates it to the desired thickness and smoothes its outer surface.
  • the invention offers various other important advantages such as the fact that the hopper is no longer subjected to vibrations as for conventional machines, which increases its duration, the fact that thanks to the use of a vibrating jack, the vibrations no longer develop in an anarchic way in all directions but are on the contrary ordered and oriented all in the same direction where they add their effects and allow a high quality smoothing leading to a better exterior finish of the coating, the fact that, always thanks to the vibrating cylinder, the 1st sound level is very attenuated and a precise control of the amplitude and the frequency of the vibrations is possible, these being adjustable according to the nature of the concrete to vibrate, etc ...

Abstract

1. Machine for externally coating with concrete tubular parts of revolution such as tubes (11), the said machine comprising at least two rotating supports (4, 5) adapted to support the part (11) at its end and drive it rotationally about itself, a storage hopper (6) for the concrete having an outlet orifice (9) which opens above the location provided for the part (11) and a lower wall (10) which extends above the said location and vibrating members (12, 13, 14) disposed in the outlet orifice (9) of the hopper (6) in the vicinity of the part (11) to be coated, characterized in that the supports are coaxial rotary drums (4, 5) displaceable along a common axis relative to each other, in that the said drums are disposed so as to penetrate inside the bore of the tubular part (11) to support it, in that the outlet orifice (9) of the hopper (6) is rearwardly offset from the vertical plane passing through the common axis of the drums (4, 5) taking into consideration the direction of rotation thereof, and in that the lower wall (10) of the hopper (6) is obliquely inclined above the location of the part (11) so as to delimit therewith a space having a transverse cross section in the shape of a wedge directed in the direction of rotation.

Description

Machine à revêtir extérieurement, notamment avec du béton,des pièces telles que des tuyaux.Machine for coating externally, in particular with concrete, parts such as pipes.

La présente invention concerne une machine à revêtir extérieurement,notamment avec du béton,des pièces telles que des tuyaux.The present invention relates to a machine for coating externally, in particular with concrete, parts such as pipes.

L'invention s'applique plus particulièrement à la fabrication de tuyaux en béton et notamment à la mise en place d'un revêtement extérieur assurant la protection des spires des tuyaux frettés.The invention applies more particularly to the manufacture of concrete pipes and in particular to the installation of an external coating ensuring the protection of the turns of the hooped pipes.

On connaît notamment,de par le certificat d'addition n°63.001 au brevet français 999.318, une installation dans laquelle le tuyau à revêtir est supporté extérieurement par des galets tour nants et situé exactement à l'aplomb de l'orifice de sortie d'une trémie comportant un peigne vibrant. Outre le fait que les zones de roulement du tuyau sur les galets ne peuvent pas être revêtues de béton,les ailettes du peigne vibrant sont courtes et le temps de vibrage de la couche de béton sortant de la trémie est assez bref si l'on veut maintenir un rendement suffisant. Dans une autre installation connue et divulguée par le certificat d'addition n°56.173 au brevet français 999.313,ou bien un étranglement en forme de coin est ménagé à la sortie de la trémie entre une paroi oblique et la pièce à revêtir,mais cet étranglement n'est pas situé au-dessus de la pièce à revêtir et le bénéfice du soutien du matériau de revêtement par la pièce elle-même est ainsi perdu,ou bien lorsque l'orifice de sortie de la trémie débouche au-dessus de la pièce à revêtir,la paroi avant inférieure de la trémie ne s'étend plus obliquement au-dessus de ladite pièce de manière à former un espace en forme de coin comme précédemment.Known in particular, from the certificate of addition No. 63.001 to French patent 999.318, an installation in which the pipe to be coated is supported externally by rotating rollers and located exactly in line with the outlet orifice of a hopper with a vibrating comb. Besides the fact that the rolling areas of the pipe on the rollers cannot be coated with concrete, the fins of the vibrating comb are short and the vibration time of the layer of concrete leaving the hopper is quite short if you want maintain sufficient performance. In an other installation known and disclosed by certificate of addition No. 56,173 to French patent 999,313, or else a wedge-shaped throttle is provided at the outlet of the hopper between an oblique wall and the part to be coated, but this throttle is not not located above the part to be coated and the benefit of the support of the coating material by the part itself is thus lost, or else when the outlet opening of the hopper opens out above the part to be coated, the lower front wall of the hopper no longer extends obliquely above said piece so as to form a wedge-shaped space as before.

Ainsi,selon les techniques utilisées actuellement , le béton est déversé à la base d'une trémie sur un tuyau à revêtir tournant lentement à l'aplomb de celle-ci,le béton étant vibré au cours de sa traversée d'une courte zone de vibration à la sortie de la trémie,Or, on sait que,pour obtenir une bonne compacité du béton, il importe de le vibrer pendant un laps de temps minimum dont la durée est notamment fonction de la fréquence et de l'amplitude des vibrations. Etant donné que,sur les appareils classiques,la zone vibrante est relativement étroite et que les vibrations sont réalisées de manière anarchique,il est nécessaire de ralentir la rotation du tuyau à revêtir et de réduire la section de sortie de la trémie pour que le béton soit vibré suffisamment longtemps. Il en résulte des temps de fabrication démesurément allongés et un ralentissement notable de la production du seul fait de cette simple opération.Thus, according to the techniques currently used, the concrete is poured at the base of a hopper onto a pipe to be coated rotating slowly above it, the concrete being vibrated during its passage through a short area of vibration at the outlet of the hopper, However, we know that, to obtain a good compactness of concrete, it is important to vibrate it for a minimum period of time, the duration of which is notably a function of the frequency and amplitude of the vibrations. Since, on conventional devices, the vibrating zone is relatively narrow and the vibrations are carried out in an anarchic way, it is necessary to slow down the rotation of the pipe to be coated and to reduce the exit section of the hopper so that the concrete is vibrated long enough. This results in disproportionately long manufacturing times and a noticeable slowdown in production simply because of this simple operation.

Le but de la présente invention est donc de proposer une machine à revêtir extérieurement,notamment avec du béton,des pièces telles que des tuyaux, qui permette de réduire considérablement le temps de l'opération tout en assurant néanmoins une excellente compacité au béton du revêtement.The object of the present invention is therefore to propose a machine for coating externally, in particular with concrete, parts such as pipes, which makes it possible to considerably reduce the time of the operation while nevertheless ensuring excellent compactness of the concrete of the coating. .

Selon l'invention,la machine à revêtir extérieurement,notamment avec du béton,des pièces tubulaires de révolution telles que des tuyaux, comprend au moins deux supports tournants destinés à supporter la pièce à ses extrémités et à l'entraîner en rotation sur elle-même,une trémie de stockage de béton ayant un orifice de sortie qui débouche au-dessus de l'emplacement réservé à la pièce et une paroi inférieure qui s'étend au-dessus dudit emplacement et des organes vibrants disposés dans l'orifice de sortie de la trémie au voisinage de la pièce à revêtir,lesdits supports tournantsétant des tambours rotatifs coaxiaux déplaçables en vis-à-vis l'un par rapport à l'autre et disposés de manière à pouvoir pénétrer dans l'alésage de la pièce tubulaire pour la supporter, tandis que l'orifice de sortie de la trémie est décalé en arrière du plan vertical passant par l'axe commun des tambours en considérant le sens de rotation de ceux-ci et que la paroi inférieure de la trémie est inclinée obliquement au-dessus de l'emplacement de la pièce de manière à délimiter avec elle un espace à section droite transversale en forme de coin dirigé dans le sens de rotation.According to the invention, the machine for externally coating, in particular with concrete, tubular parts of revolution such as pipes, comprises at least two rotating supports intended to support the part at its ends and to cause it to rotate on it. similarly, a concrete storage hopper having an outlet opening which opens above the location reserved for the part and a bottom wall which extends above said location and vibrating members arranged in the outlet opening of the hopper in the vicinity of the part to be coated, said rotary supports being coaxial rotary drums displaceable in relation to one another and arranged so as to be able to penetrate into the bore of the tubular part for support it, while the hopper outlet is offset behind the vertical plane passing through the common axis of the drums, considering the direction of rotation of the drums and the bottom wall of the hopper is inclined obliquely t above the location of the part so as to delimit with it a cross-sectional space in the form of a corner directed in the direction of rotation.

Les organes vibrants situés à la sortie de la trémie peuvent être des ailettes ou dents juxtaposées de forme triangulaire connues en soi disposées de manière à épouser sensiblement une section droite en forme de coin de l'espace délimité entre la paroi oblique de la trémie et la pièce à revêtir,lesdites ailettes ou dents vibrant en synchronisme parallèlement à l'axe des tambours.The vibrating members situated at the outlet of the hopper can be juxtaposed fins or teeth of triangular shape known per se arranged so as to conform substantially to a cross section in the form of a wedge of the space delimited between the oblique wall of the hopper and the part to be coated, said fins or teeth vibrating in synchronism parallel to the axis of the drums.

En variantes les organes vibrants peuvent aussi être constitués par des aiguilles vibrantes connues en soi juxtaposées le long de la pièce à revêtir,dans l'espace à section en forme de coin surmontant celle-ci.As a variant, the vibrating members can also consist of vibrating needles known per se juxtaposed along the part to be coated, in the space with a wedge-shaped section surmounting the latter.

De préférence,à la pointe du bec de la trémie est prévu un lissoir réglable articulé sur la trémie.Preferably, at the tip of the spout of the hopper is provided an adjustable smoother articulated on the hopper.

La solution proposée consiste essentiellement à combiner les effets de vibrations organisées se développant dans une direction privilégiée et le tassement de la matière de revêtement qui est littéralement extrudée à travers un conduit de sortie dont la section va en se rétrécissant.The proposed solution essentially consists in combining the effects of organized vibrations developing in a preferred direction and the compaction of the coating material which is literally extruded through an outlet conduit whose section is narrowing.

Enfin,pour que la matière de revêtement soit supportée plus longuement dans un plan sensiblement horizontal et permette un meilleur accrochage sur la pièce tubulaire à revêtir,il est prévu de déposer ladite matière sur la pièce tubulaire en arrière du plan vertical passant par son axe de rotation horizontal.Finally, so that the covering material is supported longer in a substantially horizontal plane and allows better attachment to the tubular part to be coated, it is planned to deposit said material on the tubular part behind the vertical plane passing through its axis of horizontal rotation.

L'ensemble de ces caractéristiques,ajouté au fait queyselon l'invention,il est prévu de soutenir la pièce tubulaire par l'intérieur,permet d'obtenir un revêtement homogène sur toute l'étendue de la surface périphérique de la pièce à revêtir.All of these characteristics, added to the fact that according to the invention, it is intended to support the tubular part from the inside, makes it possible to obtain a homogeneous coating over the entire extent of the peripheral surface of the part to be coated.

L'invention va maintenant être décrite plus en détail en se référant à un mode de réalisation particulier cité à titre d'exemple non limitatif et représenté par les dessins annexés dans lesquels:

  • Figol représente une coupe transversale de la machine selon l'invention;
  • Fig.2 représente une coupe longitudinale de la machine de la figure 1.
The invention will now be described in more detail with reference to a particular embodiment cited by way of nonlimiting example and represented by the appended drawings in which:
  • Fig o l shows a cross section of the machine according to the invention;
  • Fig.2 shows a longitudinal section of the machine of Figure 1.

Telle que représentée sur les figures,la machine comprend un bâti fixe 1 et un bâti déplaçable 2 monté sur une glissière 3 de manière à pouvoir être éloigné ou rapproché du bâti fixe, les deux bâtis supportant coaxialement des tambours rotatifs 4 et 5,entraînés en rotation par des moyens d'entraînement logés dans lesdits bâtis. La machine comprend en outre une trémie 6 supportée latéralement par des châssis latéraux 7 et 8 réglables en hauteur au-dessus de l'emplacement situé entre les deux bâtis 1 et 2,.la sortie de la trémie étant une fente 9 de section réglable au moyenppar exemple,d'un volet articulé ou coulissant,ladite fente étant ouverte à la partie basse de la trémie et s'étendant longitudinalement, parallèlement à l'axe de rotation des tambours 4 et 5,légèrement en arrière du plan vertical passant par ledit axe en considérant le sens de rotation des tambours (sens horaire sur la figure 1).As shown in the figures, the machine comprises a fixed frame 1 and a movable frame 2 mounted on a slide 3 so that it can be moved away from or close to the fixed frame, the two frames coaxially supporting rotary drums 4 and 5, driven in rotation by drive means housed in said frames. The machine further comprises a hopper 6 supported laterally by lateral frames 7 and 8 adjustable in height above the location between the two frames 1 and 2, the outlet of the hopper being a slot 9 of section adjustable at for example, an articulated or sliding shutter, said slot being open at the lower part of the hopper and extending longitudinally, parallel to the axis of rotation of the drums 4 and 5, slightly behind the vertical plane passing through said axis considering the direction of rotation of the drums (clockwise in Figure 1).

La partie basse de la paroi de la trémie située vers l'avant dans le sens de rotation des tambours comporte une avancée ou prolongement en forme de bec 10,s'étendant obliquement au-dessus de l'axe des tambours 4 et 5,de manière à délimiter avec la pièce à revêtir qui,en l'occu- rence est un tuyau fretté en béton 11,un espace en forme de coin dont la pointe est dirigée dans le sens de rotation du tuyau. Dans ledit espace est logé un peigne vibrant 12 essentiellement constitué par une plaque arrière 13,supportant plusieurs dents juxtaposées 14,de forme triangulaire, épousant sensiblement une section droite de l'espace en coin compris entre le tuyau 11 et le bec en tôle de la trémie. Le peigne 12 comporte à ses extrémités des tourillons 15 et 16 montés coulissants selon leur axe dans des paliers ménagés dans la paroi de la partie basse de la trémie, le tourillon 16 étant relié à la tige d'un vérin hydraulique vibrant 17 solidaire du bâti fixe 1.The lower part of the wall of the hopper situated towards the front in the direction of rotation of the drums comprises a projection or extension in the form of a spout 10, extending obliquely above the axis of the drums 4 and 5, way to die limit with the part to be coated, which in this case is a concrete hooped pipe 11, a wedge-shaped space whose point is directed in the direction of rotation of the pipe. In said space is housed a vibrating comb 12 essentially constituted by a rear plate 13, supporting several juxtaposed teeth 14, of triangular shape, substantially matching a cross section of the wedge space between the pipe 11 and the sheet metal spout of the hopper. The comb 12 has at its ends pins 15 and 16 mounted sliding along their axis in bearings formed in the wall of the lower part of the hopper, the pin 16 being connected to the rod of a vibrating hydraulic cylinder 17 secured to the frame fixed 1.

A la pointe du bec 10 est prévu un lissoir 18 placé à la suite du prolongement de la paroi avant de la trémie 6,ce lissoir étant supporté à une hauteur réglable au-dessus du tuyau 11 par l'intermédiaire de bras-supports 19 articulés en 20 sur ladite paroi avant de la trémie.At the tip of the spout 10 is provided a smoother 18 placed following the extension of the front wall of the hopper 6, this smoother being supported at an adjustable height above the pipe 11 by means of articulated support arms 19 at 20 on said front wall of the hopper.

La machine selon l'invention fonctionne de la manière suivante:

  • La trémie 6 étant relevée en position hau- tepour dégager les abords des bâtis,le tuyau 11 à revêtir extérieurement est amené par un engin de manutention quelconque entre le bâti fixe 1 et le bâti déplaçable 2 préalablement écarté du bâti fixe par un glissement arrière sur la glissière 3. Le tuyau 11 étant mis en place sous la fente de sortie 9 de la trémie 6,1e bâti 2 est rapproché du bâti 1 de telle sorte que le tuyau 11 repose librement.sur les deux tambours 4 et 5 pénétrant à l'intérieur de celui-ci à chacune de ses extrémités.
The machine according to the invention operates as follows:
  • The hopper 6 being raised to the h position to clear the surroundings of the frames, the pipe 11 to be coated externally is brought by any handling device between the fixed frame 1 and the movable frame 2 previously removed from the fixed frame by a rear sliding on the slide 3. The pipe 11 being placed under the outlet slot 9 of the hopper 6.1e frame 2 is brought closer to the frame 1 so that the pipe 11 rests freely on the two drums 4 and 5 penetrating at inside of it at each of its ends.

La trémie est ensuite abaissée à proximité du tuyau et les tabmours 4 et 5 sont entraînés en rotation,ce qui provoque la rotation dans le même sens du tuyau 11,tandis que la fente de sortie de la trémie est ouverte et laisse couler le béton 21 stocké dans celle-ci,ledit béton s'étalant en une couche superficielle 22 sur la surface extérieure de la paroi du tuyau 11. Au fur et à mesure de son écoulement à la sortie de la trémie,le béton emplit l'espace en coin placé sous le bec 10 où il est soumis à des vibrations parallèlement à l'axe du tuyau. Les effets combinés des vibrations et de la compression radiale auquel il est soumis du fait de la réduction de la hauteur de passage sous la tôle du bec 10 de la trémie améliore très sensiblement la compacité du béton ainsi que l'accrochage sur le tuyau de la couche de revêtement.The hopper is then lowered near the pipe and the tabmours 4 and 5 are rotated, which causes the rotation of the pipe 11 in the same direction, while the outlet slot of the hopper is open and lets the concrete flow 21 stored therein, said concrete spreading in a surface layer 22 on the outer surface of the wall of the pipe 11. As it flows out of the hopper, the concrete fills the corner space placed under the spout 10 where it is subjected to vibrations parallel to the axis of the pipe. The combined effects of the vibrations and the radial compression to which it is subjected due to the reduction in the passage height under the sheet metal of the spout 10 of the hopper very significantly improves the compactness of the concrete as well as the attachment to the pipe of the coating layer.

A sa sortie du bec 10 de la trémie,la couche de béton compactée passe enfin sous le lissoir réglable en hauteur 18 qui la lamine à l'épaisseur désirée et lisse sa surface extérieure.On leaving the spout 10 of the hopper, the compacted concrete layer finally passes under the height-adjustable smoother 18 which laminates it to the desired thickness and smoothes its outer surface.

Outre l'amélioration de la compactié et de l'accrochage du revêtement sur le tuyau,l'invention offre divers autres avantages importants tels que le fait que la trémie n'est plus soumise à des vibrations comme pour les machines classiques, ce qui augmente sa durée,le fait que grâce à l'emploi d'un vérin vibrant,les vibrations ne se développent plus de façon anarchique dans tous les sens mais sont au contraire ordonnées et orientées toutes dans une même direction où elles ajoutent leurs effets et permettent un lissage de grande qualité conduisant à une meilleure finition extérieure du revêtement,le fait que,toujours grâce au vérin vibrant,1e niveau sonore est très atténué et un contrôle précis de l'amplitude et de la fréquence des vibrations est possible, celles-ci étant réglables en fonction de la nature du béton à vibrer,etc....In addition to improving the compactness and the attachment of the coating to the pipe, the invention offers various other important advantages such as the fact that the hopper is no longer subjected to vibrations as for conventional machines, which increases its duration, the fact that thanks to the use of a vibrating jack, the vibrations no longer develop in an anarchic way in all directions but are on the contrary ordered and oriented all in the same direction where they add their effects and allow a high quality smoothing leading to a better exterior finish of the coating, the fact that, always thanks to the vibrating cylinder, the 1st sound level is very attenuated and a precise control of the amplitude and the frequency of the vibrations is possible, these being adjustable according to the nature of the concrete to vibrate, etc ...

Enfin,et surtout,l'allongement de la zone vibrante dû à l'adjonction du bec 10 que doit traverser le béton sortant de la fente 9 de la trémie accroît le temps pendant lequel le béton est vibré par rapport aux machines classiques,ce qui, à égalité de compactage et de qualité du revêtement,permet d'augmenter d'autant la vitesse de rotation du tuyau et par conséquent le rendement de la machine.Finally, and above all, the extension of the vibrating zone due to the addition of the spout 10 which the concrete leaving the slot 9 of the hopper must pass through increases the time during which the concrete is vibrated compared to conventional machines, which , with equal compaction and quality of the coating, makes it possible to increase the speed of rotation of the pipe and consequently the efficiency of the machine.

Bien entendu,la portée de l'invention n'est pas limitée au seul mode de réalisation décrit précédemment à titre d'exemple non limitatif, mais elle couvre également toute variante qui ne différerait que par des détails.Of course, the scope of the invention is not limited to the single embodiment described above by way of nonlimiting example, but it also covers any variant which would differ only in details.

C'est ainsi qu'il est possible de remplacer le peigne 12 et le vérin hydraulique vibrant 17 par des aiguilles vibrantes classiques juxtaposées le long du tuyau à revêtir;cette solution n'offre plus les avantages découlant d'une vibration unidirectionnelle,mais elle est plus économique.This is how it is possible to replace the comb 12 and the vibrating hydraulic cylinder 17 by conventional vibrating needles juxtaposed along the pipe to be coated; this solution no longer offers the advantages arising from a unidirectional vibration, but it is more economical.

Claims (3)

1.Machine à revêtir extérieurement,notamment avec du béton,des pièces tubulaires de révolution telles que des tuyaux,ladite machine comprenant au moins deux supports tournants destinés à supporter la pièce à ses extrémités et à l'entraîner en rotation sur elle-même,une trémie de stockage de béton ayant un orifice de sortie qui débouche au-dessus de l'emplacement réservé à la pièce et une paroi inférieure qui s'étend au-dessus dudit emplacement,et des organes vibrants disposés dans l'orifice de sortie de la trémie au voisinage de la pièce à revêtir ,caractérisée en ce que les supports sont des tambours rotatifs coaxiaux (4, 5) déplaçables en vis-à-vis l'un par rapport à l'autre, en ce que lesdits tambours sont disposés de manière à pouvoir pénétrer dans l'alésage de la pièce tubulaire (11 pour la supporter,en ce que l'orifice de sortie (9) de la trémie (6) est décalé en arrière du plan vertical passant par l'axe commun des tambours (4,5) en considérant le sens de rotation de ceux-ci,et en ce que la paroi inférieure (10 )de la trémie (6) est inclinée obliquement au-dessus de l'emplacement de la pièce (11) de manière à délimiter avec elle un espace à section droite transversale en forme de coin dirigé dans le sens de rotation.1.Machine for coating externally, in particular with concrete, tubular parts of revolution such as pipes, said machine comprising at least two rotating supports intended to support the part at its ends and to drive it in rotation on itself, a concrete storage hopper having an outlet opening which opens above the location reserved for the part and a bottom wall which extends above said location, and vibrating members arranged in the outlet opening of the hopper in the vicinity of the part to be coated, characterized in that the supports are coaxial rotary drums (4, 5) displaceable in relation to each other, in that said drums so as to be able to penetrate into the bore of the tubular part (11 to support it, in that the outlet orifice (9) of the hopper (6) is offset behind the vertical plane passing through the common axis of the drums (4,5) considering the direction of rotation thereof, and in that the lower wall (10) of the hopper (6) is inclined obliquely above the location of the part (11) so as to delimit with it a cross-sectional space in the form of a wedge directed in the sense of rotation. 2. Machine selon la revendication l,caractérisée en ce que les organes vibrants situés à la sortie de la trémie (6 sont des ailettes ou dents juxtaposées (14) de forme triangulaire connuesen soi disposées de manière à épouseréensiblement une section droite en forme de coin de l'espace délimité entre la paroi oblique (10)de la trémie (6) et la pièce à revêtir (11), lesdites ailettes ou dents (14)vibrant parallèlement à l'axe des tambours (4,5).2. Machine according to claim l, characterized in that the vibrating members located at the outlet of the hopper (6 are juxtaposed fins or teeth (14) of triangular shape known per se arranged so as to marry a cross section in the form of a wedge of the space delimited between the oblique wall (10) of the hopper (6) and the part to be coated (11), said fins or teeth (14) vibrating parallel to the axis of the drums (4,5). 3. Machine selon la revendication l,caractérisée en ce que les organes vibrants sont essentiellement constitués par des aiguilles vibrantes connues en soi juxtaposées le long de la pièce (11) à revêtir,dans l'espace à section en forme de coin surmontant celle-ci.3. Machine according to claim l, characterized in that the vibrating members are essentially constituted by vibrating needles known per se juxtaposed along the part (11) to be coated, in the space with a wedge-shaped section surmounting this- this.
EP19790400979 1978-12-07 1979-12-06 Machine for externally coating objects such as tubes, particularly with concrete Expired EP0012676B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7834549 1978-12-07
FR7834549A FR2443321A1 (en) 1978-12-07 1978-12-07 EXTERIOR COATING MACHINE, PARTICULARLY WITH CONCRETE, PARTS SUCH AS PIPES

Publications (2)

Publication Number Publication Date
EP0012676A1 true EP0012676A1 (en) 1980-06-25
EP0012676B1 EP0012676B1 (en) 1983-05-25

Family

ID=9215820

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19790400979 Expired EP0012676B1 (en) 1978-12-07 1979-12-06 Machine for externally coating objects such as tubes, particularly with concrete

Country Status (3)

Country Link
EP (1) EP0012676B1 (en)
DE (1) DE2965545D1 (en)
FR (1) FR2443321A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2588352B1 (en) * 1985-10-03 1988-04-29 Tuyaux Bonna CONCRETE PIPE WITH INTERNAL PLASTIC LINING AND METHOD FOR PRODUCING SUCH A PIPE
WO1995008039A1 (en) * 1993-09-13 1995-03-23 Rockwell International Corporation Apparatus for remote implementation of a command

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE18334E (en) * 1932-01-19 Method and apparatus for the manufacture of hollow articles
FR56173E (en) * 1946-03-29 1952-09-18 Vibrated concrete coating for cylindrical body
US3036931A (en) * 1959-04-27 1962-05-29 Cen Vi Ro Pipe Corp Pipe coating process and apparatus

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR999318A (en) * 1945-12-26 1952-01-30 Societes Reunies Everite Situb
FR1130277A (en) * 1955-07-29 1957-02-04 Tuyaux Bonna Method of applying a layer of concrete to a cylindrical object and resulting products
FR2315374A1 (en) * 1975-06-25 1977-01-21 Mosser Andre Smooth concrete lining application on concrete pipes - uses vibrating screed which follows hopper with concrete flow control

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE18334E (en) * 1932-01-19 Method and apparatus for the manufacture of hollow articles
FR56173E (en) * 1946-03-29 1952-09-18 Vibrated concrete coating for cylindrical body
US3036931A (en) * 1959-04-27 1962-05-29 Cen Vi Ro Pipe Corp Pipe coating process and apparatus

Also Published As

Publication number Publication date
EP0012676B1 (en) 1983-05-25
DE2965545D1 (en) 1983-07-07
FR2443321B1 (en) 1982-04-30
FR2443321A1 (en) 1980-07-04

Similar Documents

Publication Publication Date Title
EP3300819B1 (en) Device for manufacturing annular parts by selectively melting powder comprising a powder scraper
FR2525134A1 (en) DEVICE FOR TRANSFERRING MOLTEN METAL
FR2779161A1 (en) Height control mechanism for leveling plate of road asphalt finisher table
FR2635797A1 (en) SELF-PROPELLED MACHINE FOR CONCRETING THE PITCHES
FR2539334A1 (en) DEVICE FOR APPLYING COATING ON MOVING STRIPS
FR2693443A1 (en) Method and device for winding toilet paper.
EP2454928B1 (en) Spreader device with chute suitable for taking into account the flow effect
EP0012676B1 (en) Machine for externally coating objects such as tubes, particularly with concrete
FR2909400A1 (en) Fresh concrete surface leveling and polishing device for tennis court, has beam with aluminum section that is provided with guiding groove, motor trains co-operated with formwork scale, and polishing head with chassis suspended on beam
EP0270870B1 (en) Mechanism for actuating a dosage valve
FR2634789A1 (en) DEVICE COMPRISING AT LEAST ONE IMPURITY BLADE, FOR A CARD, A CLEANING MACHINE OR THE LIKE COTTON FIBER MACHINE
EP0119129B1 (en) Ditch cutting and cleaning apparatus
EP0265565B1 (en) Vibrating machine for tiling
EP0803335A1 (en) Improvements introduced in devices for the continuous manufacturing of concrete elements
FR2773565A1 (en) Trench cutting and electrical or fibre optic cable laying machine which is able to achieve a high laying rate
FR2467066A1 (en) MACHINE FOR THE PRODUCTION OF BUILDING PANELS
FR2505235A1 (en) SMOOTHING MACHINE, PARTICULARLY FOR WOOD FLOORS
CA2151844A1 (en) Centrifugation facility for hardenable fluid material and products made with such method
FR2568492A1 (en) Novel method of sizing granular products by means of a rotary cylinder
FR2562574A1 (en) Road finishing machine for applying concrete onto a road surface
FR2729162A1 (en) Adjustable mould for grooved gutter stones to drain rainwater from motorways
BE475970A (en)
FR2535035A1 (en) METHOD FOR DRYING OBJECTS AND INSTALLATION FOR ITS IMPLEMENTATION
FR2746694A3 (en) Brick pressing machine with geometrically variable press mould entry
FR2604159A1 (en) Extractor device of variable width for extracting gravel or granular material at the bottom end of a hopper and machines fitted with one or more of these devices

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): BE DE FR GB IT NL

ITCL It: translation for ep claims filed

Representative=s name: STUDIO TORTA SOCIETA' SEMPLICE

17P Request for examination filed

Effective date: 19801217

DET De: translation of patent claims
ITF It: translation for a ep patent filed

Owner name: STUDIO TORTA SOCIETA' SEMPLICE

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): BE DE FR GB IT NL

REF Corresponds to:

Ref document number: 2965545

Country of ref document: DE

Date of ref document: 19830707

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
ITTA It: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19891231

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19900112

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19901120

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19901126

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19901203

Year of fee payment: 12

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Effective date: 19901231

BERE Be: lapsed

Owner name: SOC. DES TUYAUX BONNA

Effective date: 19901231

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19910701

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19911206

GBPC Gb: european patent ceased through non-payment of renewal fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19920831

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19920901

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST