EP0299888A1 - Mould for voussoirs - Google Patents

Mould for voussoirs Download PDF

Info

Publication number
EP0299888A1
EP0299888A1 EP88420238A EP88420238A EP0299888A1 EP 0299888 A1 EP0299888 A1 EP 0299888A1 EP 88420238 A EP88420238 A EP 88420238A EP 88420238 A EP88420238 A EP 88420238A EP 0299888 A1 EP0299888 A1 EP 0299888A1
Authority
EP
European Patent Office
Prior art keywords
cheeks
box
concrete
mold
longitudinal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP88420238A
Other languages
German (de)
French (fr)
Inventor
René Chevallier
Serge Minazio
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.)
Neyrpic SA
Original Assignee
Neyrpic SA
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 Neyrpic SA filed Critical Neyrpic SA
Publication of EP0299888A1 publication Critical patent/EP0299888A1/en
Withdrawn legal-status Critical Current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
    • B28B1/00—Producing shaped prefabricated articles from the material
    • B28B1/08—Producing shaped prefabricated articles from the material by vibrating or jolting
    • B28B1/087—Producing shaped prefabricated articles from the material by vibrating or jolting by means acting on the mould ; Fixation thereof to the mould
    • B28B1/0873—Producing shaped prefabricated articles from the material by vibrating or jolting by means acting on the mould ; Fixation thereof to the mould the mould being placed on vibrating or jolting supports, e.g. moulding tables

Definitions

  • the segments must have a very good geometrical quality, more particularly on the sides, in order on the one hand to ensure very good support of the segments between them in order to withstand the circumferential forces due to environmental pressures and, on the other hand On the other hand, ensuring the resumption of the longitudinal forces of the TBM thrust jacks.
  • the segments are hitherto molded flat in molds consisting mainly of a convex curved bottom plate and four cheeks opening like petals to facilitate demolding, said mold being associated with a frame mounted on rollers of bearing, allowing the mold to be moved to the various successive manufacturing stations.
  • the improvements which are the subject of the present invention aim to overcome these drawbacks and to make it possible to produce a segment mold which is rigid and compact while being light, so as to eliminate the use of the vibrating table and to communicate vibrations directly to said mold.
  • the mold according to the invention of the kind comprising a convex bottom in the direction of the top and two longitudinal and transverse cheeks comprises a box comprising two longitudinal walls welded to the bottom and a base, said walls each being provided with a horizontal soleplate. connected to a vibration system known per se capable of transmitting to said box vibrations capable of causing the compaction of the concrete constituting the segments due to the low inertia of this box.
  • a segment mold according to the invention. Its curved bottom plate has been referenced 1, while its longitudinal cheeks are referenced 2. The extreme or transverse cheeks are referenced 4.
  • Such a mold is well known in practice and its bottom 1 is convex in the direction of the top with a radius of curvature equal to that which one wishes to give to the interior face of each segment. This determines a compartment 3 constituting the cavity in which the segment is manufactured.
  • This compartment 3 is, according to the invention, integral with a hollow box 6.
  • This comprises two longitudinal walls 7 and 8, the upper edges of which are welded to the bottom 1, while their lower edges are each provided with a sole 7 a , 8 a .
  • the box also has a base 9 provided horizontal which joins the walls 7 and 8.
  • Transverse reinforcement partitions 10 are assembled with said walls, so that the box 6, although light, is particularly rigid.
  • the lateral cheeks of the mold are integral with vertical stiffeners 11, 12 and 13 connected by a reinforcing rib 14 with cut sides extending over the entire length of the outer face of the cheeks considered.
  • Each of the stiffeners extends downwards by a post 15, 16 and 17 produced by means of two angles placed back to back.
  • the bottom of the central upright 16 is provided with a transverse perforation 16 a which, when the cheek 2 is vertical, comes in front of a hole 18 a of a yoke 18 welded to the outer face of each cheek 7, 8.
  • a transverse perforation 16 a which, when the cheek 2 is vertical, comes in front of a hole 18 a of a yoke 18 welded to the outer face of each cheek 7, 8.
  • each cheek comprises at their base a yoke 22 (fig. 3) suitable for pivoting relative to an axis 23 carried by a tab 24 of the wall considered 7 or 8.
  • tie rods 20 capable of holding the top of the uprights in a determined position relative to the upper part of the walls 7 and 8.
  • the lower part of the box is provided with blocks 25 with respect to which the wheels 26 are mounted to rotate freely.
  • the assembly according to the invention can therefore be placed on a rolling track 27 so as to move the mold from a work to another.
  • the device according to the invention is brought to a work station illustrated in FIG. 1 and 2, which comprises a shallow pit 28 which the track 27 crosses on supports 29.
  • a work station illustrated in FIG. 1 and 2, which comprises a shallow pit 28 which the track 27 crosses on supports 29.
  • the pit 28 for example, six boxes 30, that is to say three on either side of track 27.
  • the flanges 7 a and 8 has walls 7 and 8 of the box 6 are placed in a slide 30 a of each housing 30 when the mold according to the invention is above the pit 28.
  • Each housing 30 contains two eccentric weights 31, 31 ′ suitably mounted for rotation in said housing and which are driven born one by a cardan transmission 32 connected to each of the two shaft ends of an electric motor 33 fixed in the pit 28, the other by a not shown toothed belt connected to the first counterweight.
  • the timing of the toothed belts is done so that the weights are in phase opposition in the vertical plane, and in phase in the horizontal plane so as to transmit the vibrations to me only in the vertical plane.
  • Each box has two brackets 30 b , 30 c on each of which is fixed an elastic pneumatic cylinder 34.
  • the actual mold that is to say the compartment 3 constituted by the bottom 1 and the cheeks 2 and 4, is filled with concrete.
  • the mold is moved on track 27 to bring it above the pit 28, as illustrated in fig. 1.
  • the soles 7 a , 8 a then penetrate the slides 30 a of each housing.
  • the assembly is then raised by putting the jacks 34 under pressure, which causes the wheels to be lifted, as illustrated in FIG. 4 and 5.
  • the mold is therefore suspended only by the flexible pneumatic cylinders 34 which have been expanded relative to their rest state. This action causes the wedging of the flanges 7a and 8a in the rails 30 has the housings, so that the box 6 and they become firmly secured.
  • the electric motors 33 are then supplied to cause the rotation of the eccentric weights 31, 31 ′ which communicate very significant vibrations to the whole of the mold capable of allowing densification, filling and perfect homogeneity of the concrete contained in compartment 3.
  • the jacks 34 are contracted so that the wheels 26 return to the track 27 and the mold is removed to a drying station after having floated its upper face so that the segment presents the desired external rounded shape corresponding to the plane passing through the free upper edges of the cheeks.
  • transverse cheeks 4 are held in place by a cam 35 secured to a suitable operating device not shown, said cam bearing on a lever 36 secured to the cheeks 4 and 5 and pivoting about an axis fixed 37.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Moulds, Cores, Or Mandrels (AREA)

Abstract

It comprises a box (6) which is equipped with wheels (26) resting on a displacement track (27) and the base of which is equipped with sole plates (7a, 8a), vibratory systems, the housings (30) of which comprise means (30a) for being secured to the sole plates, and elastic pneumatic jacks (34) suitable for making it possible to raise the wheels (26) above the track (27) during the functioning of the vibratory systems. <IMAGE>

Description

Lors du percement d'un tunnel dans des terrains meubles ou peu homogè­nes, il convient au fur et à mesure de l'avancement de l'engin de forage ou "tunnelier", d'étayer la galerie par un revêtement constitué de plu­sieurs éléments appelés "voussoirs". Ces derniers sont constitués par des secteurs d'anneau généralement en béton armé montés à l'intérieur du tunnel et propres à assurer d'abord l'étanchéité, ensuite la tenue aux pressions environnantes, enfin la reprise de la poussée du "tunnelier" au moment du forage.When drilling a tunnel in loose or not very homogeneous ground, it is advisable as the drilling machine or "tunnel boring machine" advances, to support the gallery with a covering made up of several elements called "voussoirs". The latter are formed by ring sectors generally made of reinforced concrete mounted inside the tunnel and suitable for firstly sealing, then withstanding the surrounding pressures, and finally resuming the thrust of the "tunnel boring machine". time of drilling.

Les voussoirs doivent présenter une très bonne qualité géométrique, plus particulièrement sur les flancs, afin d'une part d'assurer un très bon appui des voussoirs entre eux pour bien résister aux efforts circonférienciels dûs aux pressions de l'environnement et, d'autre part, assurer la reprise des efforts longitudinaux des vérins de poussée du tunnelier.The segments must have a very good geometrical quality, more particularly on the sides, in order on the one hand to ensure very good support of the segments between them in order to withstand the circumferential forces due to environmental pressures and, on the other hand On the other hand, ensuring the resumption of the longitudinal forces of the TBM thrust jacks.

Ils doivent également présenter une très bonne homogénéité, c'est-à-dire que le béton qui les constitue doit être compact pour posséder dans leur ensemble les qualités d'étanchéité requises et celles de résistance à tous les efforts radiaux et longitudinaux.They must also have very good homogeneity, that is to say that the concrete which constitutes them must be compact in order to have as a whole the required sealing qualities and those of resistance to all the radial and longitudinal forces.

Les voussoirs sont jusqu'à présent moulés à plat dans des moules cons­titués principalement d'une tôle de fond cintrée convexe et de quatre joues s'ouvrant comme des pétales pour faciliter le démoulage, ledit moule étant associé à un chassis monté sur des galets de roulement, permettant le déplacement du moule aux divers postes de fabrication successifs.The segments are hitherto molded flat in molds consisting mainly of a convex curved bottom plate and four cheeks opening like petals to facilitate demolding, said mold being associated with a frame mounted on rollers of bearing, allowing the mold to be moved to the various successive manufacturing stations.

Pour assurer une bonne qualité de béton, il est nécessaire que ce der­nier soit parfaitement vibré. Etant donné la courbure de la tôle de fond du moule et la rigidité des faces latérales qui est nécessaire à la pré­cision des formes géométriques, il n'est pas possible de réaliser une vibration "en membrane" de la tôle de fond ou des parois comme cela existe dans certains moules ou autres structures présentant une ou plu­sieurs surfaces planes. Dans le cas des moules à voussoirs, l'on est jusqu'ici obligé de faire vibrer en bloc tout le moule qui présente une inertie considérable. En vue d'obtenir une bonne compacité du béton, on est conduit à communiquer au moule des accélérations de l'ordre de 6g.To ensure good quality of concrete, it is necessary that it is perfectly vibrated. Given the curvature of the bottom sheet of the mold and the rigidity of the side faces which is necessary for the precision of the geometric shapes, it is not possible to achieve a "membrane" vibration of the bottom sheet or the walls as this exists in certain molds or other structures having one or more flat surfaces. In the case of segment molds, we have hitherto been obliged to vibrate as a whole the whole mold which has considerable inertia. In order to obtain a good compactness of the concrete, it is necessary to communicate to the mold accelerations of the order of 6 g.

La structure des moules usuels est lourde et difficile à rigidifier. Dans ces conditions, il n'est pas pensable de leur communiquer directe­ment des vibrations et c'est la raison pour laquelle on fait passer suc­cessivement les moules de ce genre sur une table vibrante pour effectuer l'homogénéisation du béton.The structure of conventional molds is heavy and difficult to stiffen. Under these conditions, it is not conceivable to communicate vibrations directly to them and this is the reason why these molds are passed successively over a vibrating table to effect the homogenization of the concrete.

On a décrit une telle table dans le document DE.A.2 426 457 ladite table étant utilisée dans ce document pour faire directement vibrer une dalle de béton.Such a table has been described in document DE.A.2 426 457 said table being used in this document for directly vibrating a concrete slab.

On comprend aisément que l'énergie de vibration à fournir est considéra­ble, compte tenu d'une part de la masse à faire entrer en vibration (celle du moule plus celle de la table) et d'autre part des pertes dues aux liaisons n'assurant pas une transmission directe des forces de vi­bration vers le fond du moule. Malgré les importants moyens mis en oeu­vre pour effectuer les vibrations, il est souvent nécessaire d'interve­nir manuellement à l'aide d'aiguilles pour parfaire le tassement du bé­ton dans le moule. Ces aiguilles sont bien connues dans la pratique et leur utilisation est très répandue dans la mise en oeuvre des bâtiments en béton armé.It is easy to understand that the vibration energy to be supplied is considerable, taking into account on the one hand the mass to be brought into vibration (that of the mold plus that of the table) and on the other hand losses due to connections n ' not ensuring direct transmission of vibration forces to the bottom of the mold. Despite the significant means used to carry out the vibrations, it is often necessary to intervene manually using needles to perfect the compaction of the concrete in the mold. These needles are well known in practice and their use is very widespread in the implementation of reinforced concrete buildings.

Les perfectionnements qui font l'objet de la présente invention visent à pallier à ces inconvénients et à permettre de réaliser un moule à vous­soirs qui soit rigide et compact tout en étant léger, de manière à sup­primer l'utilisation de la table vibrante et à communiquer les vibra­tions directement audit moule.The improvements which are the subject of the present invention aim to overcome these drawbacks and to make it possible to produce a segment mold which is rigid and compact while being light, so as to eliminate the use of the vibrating table and to communicate vibrations directly to said mold.

A cet effet, le moule suivant l'invention du genre comportant un fond convexe en direction du haut et deux joues longitudinales et transversa­les comprend un caisson comportant deux parois longitudinales soudées au fond et une base, lesdites parois étant pourvues chacunes d'une semelle horizontale reliée à un système vibratoire en soi-connu propre à trans­mettre audit caisson des vibrations susceptibles de provoquer le compac­tage du béton constituant les voussoirs du fait de la faible inertie de ce caisson.To this end, the mold according to the invention of the kind comprising a convex bottom in the direction of the top and two longitudinal and transverse cheeks comprises a box comprising two longitudinal walls welded to the bottom and a base, said walls each being provided with a horizontal soleplate. connected to a vibration system known per se capable of transmitting to said box vibrations capable of causing the compaction of the concrete constituting the segments due to the low inertia of this box.

Le dessin annexé, donné à titre d'exemple, permettra de mieux comprendre l'invention, les caractéristiques qu'elle présente et les avantages qu'elle est susceptible de procurer :

  • Fig. 1 est une vue en élévation d'un moule suivant l'invention représenté au poste où il doit subir des effets vibratoires.
  • Fig. 2 en est une coupe transversale suivant II-II (fig. 1).
  • Fig. 3 est une coupe transversale partielle suivant III-III (fig. 1).
  • Fig. 4 est une vue semblable à celle de fig. 3, mais illustrant le moule suivant l'invention avec ses roues élevées au-dessus de la voie de déplacement.
  • Fig. 5 est une coupe partielle semblable à celle de fig. 4, mais effectuée dans un plan transversal différent.
The appended drawing, given by way of example, will allow a better understanding of the invention, the characteristics which it presents and the advantages which it is capable of providing:
  • Fig. 1 is an elevational view of a mold according to the invention shown at the station where it must undergo vibratory effects.
  • Fig. 2 is a cross section along II-II (fig. 1).
  • Fig. 3 is a partial cross section along III-III (fig. 1).
  • Fig. 4 is a view similar to that of FIG. 3, but illustrating the mold according to the invention with its wheels raised above the travel path.
  • Fig. 5 is a partial section similar to that of FIG. 4, but carried out in a different transverse plane.

On a représenté en fig. 1 un moule à voussoir suivant l'invention. Sa tôle de fond courbe a été référencée 1, tandis que ses joues longitu­dinales sont repérées 2. Les joues extrêmes ou transversales sont quant à elles référencées 4. Un tel moule est bien connu dans la pratique et son fond 1 est convexe en direction du haut avec un rayon de coubure égal à celui qu'on désire donner à la face intérieure de chaque vous­soir. On détermine ainsi un compartiment 3 constituant la cavité dans laquelle le voussoir est fabriqué.There is shown in fig. 1 a segment mold according to the invention. Its curved bottom plate has been referenced 1, while its longitudinal cheeks are referenced 2. The extreme or transverse cheeks are referenced 4. Such a mold is well known in practice and its bottom 1 is convex in the direction of the top with a radius of curvature equal to that which one wishes to give to the interior face of each segment. This determines a compartment 3 constituting the cavity in which the segment is manufactured.

Ce compartiment 3 est, suivant l'invention, solidaire d'un caisson creux 6. Celui-ci comporte deux parois longitudinales 7 et 8 dont les arêtes supérieures sont soudées au fond 1, tandis que leurs arêtes inférieures sont chacune pourvues d'une semelle 7a, 8a. Le caisson comporte encore une base 9 prévue horizontale qui réunit les parois 7 et 8. Des cloisons de renfort transversales 10 sont assemblées avec lesdites parois, de telle sorte que le caisson 6, bien que léger, est particulièrement rigide.This compartment 3 is, according to the invention, integral with a hollow box 6. This comprises two longitudinal walls 7 and 8, the upper edges of which are welded to the bottom 1, while their lower edges are each provided with a sole 7 a , 8 a . The box also has a base 9 provided horizontal which joins the walls 7 and 8. Transverse reinforcement partitions 10 are assembled with said walls, so that the box 6, although light, is particularly rigid.

Les joues latérales du moule sont solidaires de raidisseurs verticaux 11, 12 et 13 reliés par une nervure de renfort 14 à pans coupés s'éten­dant sur toute la longueur de la face extérieure des joues considérées.The lateral cheeks of the mold are integral with vertical stiffeners 11, 12 and 13 connected by a reinforcing rib 14 with cut sides extending over the entire length of the outer face of the cheeks considered.

Chacun des raidisseurs se prolonge vers le bas par un montant 15, 16 et 17 réalisé au moyen de deux cornières placées dos à dos.Each of the stiffeners extends downwards by a post 15, 16 and 17 produced by means of two angles placed back to back.

Le bas du montant central 16 est pourvu d'une perforation transversale 16a qui, lorsque la joue 2 est verticale, vient en face d'un trou 18a d'une chape 18 soudée sur la face extérieure de chaque joue 7, 8. Ainsi, une fois le montant 16 placé à l'intérieur de la chape, il est possible d'engager une broche 19 dans l'ensemble constitué par la perforation 16a et par le trou 18a de manière à assujettir le montant et le caisson. On remarque la présence d'un tirant 20 qui traverse latéralement le caisson ainsi que les deux montants 16 de manière à venir appliquer une butée 16b desdits montants contre la partie supérieure des parois longitudi­nales 7 et 8 grâce au serrage d'écrous 21 vissés à chacune de ses extré­mités. Ainsi, l'on peut déterminer très exactement l'orientation des joues 2 et 3.The bottom of the central upright 16 is provided with a transverse perforation 16 a which, when the cheek 2 is vertical, comes in front of a hole 18 a of a yoke 18 welded to the outer face of each cheek 7, 8. Thus, once the amount 16 placed inside the yoke, it is possible to engage a pin 19 in the assembly constituted by the perforation 16 a and by the hole 18 a so as to subject the amount and the box . Note the presence of a tie rod 20 which laterally crosses the box as well as the two uprights 16 so as to apply a stop 16b of said uprights against the upper part of the longitudinal walls 7 and 8 by tightening nuts 21 screwed to each of its ends. Thus, one can determine very exactly the orientation of the cheeks 2 and 3.

Les autres montants, c'est-à-dire ceux référencés 15 et 17, de chaque joue sont semblables à celui 16, mais ils comportent à leur base une chape 22 (fig. 3) propre à pivoter par rapport à un axe 23 porté par une patte 24 de la paroi considérée 7 ou 8.The other uprights, that is to say those referenced 15 and 17, of each cheek are similar to that 16, but they comprise at their base a yoke 22 (fig. 3) suitable for pivoting relative to an axis 23 carried by a tab 24 of the wall considered 7 or 8.

Comme pour le montant 16, il existe des tirants 20 susceptibles de maintenir le haut des montants en position déterminée par rapport à la partie supérieure des parois 7 et 8.As with the upright 16, there are tie rods 20 capable of holding the top of the uprights in a determined position relative to the upper part of the walls 7 and 8.

La partie inférieure du caisson est pourvue de blocs 25 par rapport auxquels sont montées à rotation libre des roues 26. On peut donc placer l'ensemble suivant l'invention sur une voie de roulement 27 de manière à déplacer le moule d'un poste de travail à l'autre.The lower part of the box is provided with blocks 25 with respect to which the wheels 26 are mounted to rotate freely. The assembly according to the invention can therefore be placed on a rolling track 27 so as to move the mold from a work to another.

En vue de vibrer le béton dont le compartiment 3 a été rempli dans un poste précédent, on amène le dispositif suivant l'invention à un poste de travail illustré en fig. 1 et 2, lequel comporte une fosse peu pro­fonde 28 que la voie 27 traverse sur des supports 29. Dans la fosse 28, on a placé par exemple six boîtiers 30, c'est-à-dire trois de part et d'autre de la voie 27. En réalité, les semelles 7a et 8a des parois 7 et 8 du caisson 6 se trouvent placées dans une glissière 30a de chaque boîtier 30 lorsque le moule suivant l'invention est au-dessus de la fosse 28. Chaque boîtier 30 renferme deux masselottes excentrées 31, 31′ convenablement montées à rotation dans ledit boîtier et qui sont entraî­ nées l'une par une transmission à cardan 32 reliée à chacun des deux bouts d'arbre d'un moteur électrique 33 fixé dans la fosse 28, l'autre par une courroie crantée non représentée reliée à la première masselot­te. Le calage des courroies crantées est fait de façon que les masselot­tes soient en opposition de phase dans le plan vertical, et en phase dans le plan horizontal de façon à me transmettre les vibrations que dans le plan vertical.In order to vibrate the concrete, the compartment 3 of which has been filled in a previous station, the device according to the invention is brought to a work station illustrated in FIG. 1 and 2, which comprises a shallow pit 28 which the track 27 crosses on supports 29. In the pit 28, for example, six boxes 30, that is to say three on either side of track 27. In reality, the flanges 7 a and 8 has walls 7 and 8 of the box 6 are placed in a slide 30 a of each housing 30 when the mold according to the invention is above the pit 28. Each housing 30 contains two eccentric weights 31, 31 ′ suitably mounted for rotation in said housing and which are driven born one by a cardan transmission 32 connected to each of the two shaft ends of an electric motor 33 fixed in the pit 28, the other by a not shown toothed belt connected to the first counterweight. The timing of the toothed belts is done so that the weights are in phase opposition in the vertical plane, and in phase in the horizontal plane so as to transmit the vibrations to me only in the vertical plane.

Chaque boîtier comporte deux consoles 30b, 30c sur chacune desquel­les est fixé un vérin pneumatique élastique 34.Each box has two brackets 30 b , 30 c on each of which is fixed an elastic pneumatic cylinder 34.

Le fonctionnement est le suivant :The operation is as follows:

A un poste précédent, le moule proprement dit, c'est-à-dire le comparti­ment 3 constitué par le fond 1 et les joues 2 et 4, est rempli de béton. Puis le moule est déplacé sur la voie 27 pour l'amener au-dessus de la fosse 28, comme illustré en fig. 1. Les semelles 7a, 8a pénètrent alors dans les glissières 30a de chaque boîtier. On provoque ensuite l'éléva­tion de l'ensemble en mettant sous pression les vérins 34, ce qui provo­que le soulèvement des roues, comme illustré en fig. 4 et 5. Le moule est donc suspendu uniquement par les vérins pneumatiques souples 34 qui ont été dilatés par rapport à leur état de repos. Cette action entraîne le coincement des semelles 7a et 8a dans les glissières 30a des boî­tiers, de telle sorte que le caisson 6 et ces derniers deviennent ferme­ment solidaires. On alimente alors les moteurs électriques 33 pour pro­voquer la rotation des masselottes excentrées 31, 31′ qui communiquent à l'ensemble du moule des vibrations très importantes propres à permettre une densification, un remplissage et une homogénéité parfaite du béton contenu dans le compartiment 3.At a previous station, the actual mold, that is to say the compartment 3 constituted by the bottom 1 and the cheeks 2 and 4, is filled with concrete. Then the mold is moved on track 27 to bring it above the pit 28, as illustrated in fig. 1. The soles 7 a , 8 a then penetrate the slides 30 a of each housing. The assembly is then raised by putting the jacks 34 under pressure, which causes the wheels to be lifted, as illustrated in FIG. 4 and 5. The mold is therefore suspended only by the flexible pneumatic cylinders 34 which have been expanded relative to their rest state. This action causes the wedging of the flanges 7a and 8a in the rails 30 has the housings, so that the box 6 and they become firmly secured. The electric motors 33 are then supplied to cause the rotation of the eccentric weights 31, 31 ′ which communicate very significant vibrations to the whole of the mold capable of allowing densification, filling and perfect homogeneity of the concrete contained in compartment 3.

Une fois la vibration du béton terminée, on contracte les vérins 34 de telle sorte que les roues 26 reviennent sur la voie 27 et l'on évacue le moule à voussoir vers un poste de séchage après avoir taloché sa face supérieure pour que le voussoir présente la forme arrondie extérieure désirée correspondant au plan passant par les arêtes supérieures libres des joues.Once the vibration of the concrete is finished, the jacks 34 are contracted so that the wheels 26 return to the track 27 and the mold is removed to a drying station after having floated its upper face so that the segment presents the desired external rounded shape corresponding to the plane passing through the free upper edges of the cheeks.

Une fois le béton sec, on dévisse les écrous 21 pour provoquer l'ouver­ture latérale des joues 2 (comme illustré en fig. 2) après avoir extrait les broches 19 ; puis les tirants 20 sont retirés.Once the concrete is dry, we unscrew the nuts 21 to cause the lateral opening of the cheeks 2 (as illustrated in fig. 2) after extracting pins 19; then the tie rods 20 are removed.

Bien entendu, les joues transversales 4 sont quant à elles maintenues en place par une came 35 solidaire d'un dispositif de manoeuvre approprié non représenté, ladite came prenant appui sur un levier 36 solidaire des joues 4 et 5 et pivotant autour d'un axe fixe 37.Of course, the transverse cheeks 4 are held in place by a cam 35 secured to a suitable operating device not shown, said cam bearing on a lever 36 secured to the cheeks 4 and 5 and pivoting about an axis fixed 37.

On a ainsi réalisé un moule à voussoir qui présente une faible inertie et une très grande rigidité, de telle sorte que les vibrations qui sont communiquées à son caisson sont transmises de manière presque intégrale au béton en vue de le densifier.There was thus produced a segment mold which has a low inertia and a very high rigidity, so that the vibrations which are communicated to its casing are transmitted in an almost integral manner to the concrete in order to densify it.

Claims (3)

1. Moule à voussoirs du genre réalisé sous la forme d'un compartiment (3) qu'on remplit de béton et constitué par un fond (1) convexe en di­rection du haut et de joues longitudinales (2) et transversales (4, 5) s'ouvrant pour permettre le démonlage du béton, caractérisé en ce qu'il comprend en outre un caisson (6) comportant deux parois longitudinales (7, 8) soudées au fond (1) et une base (9), lesdites parois (7, 8) étant pourvues chacunes d'une semelle horizontale (7a, 8a) reliée à un système vibratoire en soi-connu propre à transmettre audit caisson (6) des vibrations susceptibles de provoquer le compactage du béton constituant les voussoirs du fait de la faible inertie de ce caisson.1. Segment mold of the kind produced in the form of a compartment (3) which is filled with concrete and constituted by a bottom (1) convex towards the top and of longitudinal (2) and transverse (4, 5) cheeks ) opening to allow the dismantling of the concrete, characterized in that it further comprises a box (6) comprising two longitudinal walls (7, 8) welded to the bottom (1) and a base (9), said walls ( 7, 8) being each provided with a horizontal sole (7 a , 8 a ) connected to a vibration system known per se capable of transmitting to said box (6) vibrations capable of causing the compaction of the concrete constituting the segments due the low inertia of this box. 2. Moule suivant la revendication 1, caractérisé en ce que les joues longitudinales (2) sont associées à des montants (16) pivotants par rap­port à la paroi (7, 8) correspondante, les montants considérés étant maintenus par un tirant (20) qui permet de déterminer exactement l'orientation des joues (2, 3) en position de moulage.2. Mold according to claim 1, characterized in that the longitudinal cheeks (2) are associated with uprights (16) pivoting relative to the corresponding wall (7, 8), the amounts considered being held by a tie rod (20) which allows to determine exactly the orientation of the cheeks (2, 3) in the molding position. 3. Moule suivant la revendication 1, caractérisé en ce que les joues transversales (4, 5) sont chacune associées à une came (35) prenant appui contre un levier (36) solidaire de chaque joue (4, 5) et pivotant autour d'un axe (36).3. Mold according to claim 1, characterized in that the transverse cheeks (4, 5) are each associated with a cam (35) bearing against a lever (36) integral with each cheek (4, 5) and pivoting around 'an axis (36).
EP88420238A 1987-07-06 1988-07-06 Mould for voussoirs Withdrawn EP0299888A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8709904A FR2617886A1 (en) 1987-07-06 1987-07-06 MUSSEL FOR SALE
FR8709904 1987-07-06

Publications (1)

Publication Number Publication Date
EP0299888A1 true EP0299888A1 (en) 1989-01-18

Family

ID=9353104

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88420238A Withdrawn EP0299888A1 (en) 1987-07-06 1988-07-06 Mould for voussoirs

Country Status (2)

Country Link
EP (1) EP0299888A1 (en)
FR (1) FR2617886A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994026490A1 (en) * 1993-05-07 1994-11-24 Dätwyler Ag Schweizerische Kabel-, Gummi- Und Kunststoffwerke Shuttering for the production of tunnel tubbing
CN110644743A (en) * 2019-09-27 2020-01-03 广东博智林机器人有限公司 Floor installation mechanism and floor installation robot
CN111975936A (en) * 2020-08-31 2020-11-24 甘肃省建材科研设计院有限责任公司 Impermeable and breathable plate-shaped sand product production equipment and matched production method thereof

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107756600B (en) * 2017-11-20 2024-05-24 上海师范大学 Automatic water collecting and trowelling device for circular arc surface of cement duct piece

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1849889A (en) * 1928-11-16 1932-03-15 Francis J Straub Block molding machine
US2505342A (en) * 1946-01-10 1950-04-25 Schaaf Pre Cast Concrete Co Apparatus for molding curved concrete panels
GB867083A (en) * 1958-05-21 1961-05-03 Philip Hugh Marshall Improvements relating to the moulding of arcuate sections of concrete and like building materials
US3348802A (en) * 1965-09-22 1967-10-24 Sam Heppenstall & Associates I Mold box
DE2426457A1 (en) * 1974-05-31 1975-12-11 Stetter Gmbh Mobile palette mould vibrator for precast concrete - profiled palette support section engages vibrator mechanism
DE2640372A1 (en) * 1975-09-24 1977-04-28 Beton Es Vasbetonipari Muevek METHOD AND DEVICE FOR MANUFACTURING PREFABRICATED CONCRETE AND IRON CONCRETE ELEMENTS OF HIGH DIMENSIONAL ACCURACY

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE458490A (en) *
FR2029336A5 (en) * 1969-01-24 1970-10-16 Locabloc
DE2114456A1 (en) * 1971-03-25 1972-10-12 Silberkuhl, Wilhelm Johannes, Dipl Ing, 4300 Essen Method and device for the manufacture of prefabricated reinforced concrete flat structures
DE2349129B2 (en) * 1973-09-29 1978-03-30 Armin 7500 Karlsruhe Kleiber Vibration device for the production of precast concrete parts or the like

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1849889A (en) * 1928-11-16 1932-03-15 Francis J Straub Block molding machine
US2505342A (en) * 1946-01-10 1950-04-25 Schaaf Pre Cast Concrete Co Apparatus for molding curved concrete panels
GB867083A (en) * 1958-05-21 1961-05-03 Philip Hugh Marshall Improvements relating to the moulding of arcuate sections of concrete and like building materials
US3348802A (en) * 1965-09-22 1967-10-24 Sam Heppenstall & Associates I Mold box
DE2426457A1 (en) * 1974-05-31 1975-12-11 Stetter Gmbh Mobile palette mould vibrator for precast concrete - profiled palette support section engages vibrator mechanism
DE2640372A1 (en) * 1975-09-24 1977-04-28 Beton Es Vasbetonipari Muevek METHOD AND DEVICE FOR MANUFACTURING PREFABRICATED CONCRETE AND IRON CONCRETE ELEMENTS OF HIGH DIMENSIONAL ACCURACY

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994026490A1 (en) * 1993-05-07 1994-11-24 Dätwyler Ag Schweizerische Kabel-, Gummi- Und Kunststoffwerke Shuttering for the production of tunnel tubbing
CN110644743A (en) * 2019-09-27 2020-01-03 广东博智林机器人有限公司 Floor installation mechanism and floor installation robot
CN110644743B (en) * 2019-09-27 2021-06-08 广东博智林机器人有限公司 Floor installation mechanism and floor installation robot
CN111975936A (en) * 2020-08-31 2020-11-24 甘肃省建材科研设计院有限责任公司 Impermeable and breathable plate-shaped sand product production equipment and matched production method thereof

Also Published As

Publication number Publication date
FR2617886A1 (en) 1989-01-13

Similar Documents

Publication Publication Date Title
FR2458382A1 (en) INJECTION MOLDING MACHINE OF COMPOSITE PIECES
FR2833023A1 (en) METHOD OF CONSTRUCTING A RAIL TRACK IN WHICH A CONCRETE TRACK SLAB IS MADE AND INSERTED IN THE TRACK SLOT ANCHORING ELEMENTS OF THE RAIL TRACK
EP0299888A1 (en) Mould for voussoirs
EP0619773B1 (en) Method and device for manufacturing construction blocks from a hydraulic binder such as plaster, an inert filler such as sand, and water
EP0202138B1 (en) Method for making building blocks, means for performing this method and product obtained thereby
FR2659593A1 (en) Device for automatically producing products made from cast concrete requiring mould release by overturning
FR2642355A1 (en) VIBRATION PRESS FOR MOLDING CONCRETE PRODUCTS
WO2012098319A1 (en) Crankshaft, and method for manufacturing said crankshaft
BE1014618A3 (en) DEVICE MANUFACTURING LARGE concrete blocks A DIMENSIONS ACCURATE.
FR2478519A1 (en) Automatic machine making annular cement roof fittings - uses rail guided slidable mould reciprocating between casting and striking posts
FR2729602A1 (en) Pressure moulding installation for concrete products
FR2532580A1 (en) Vibrating unit for casting elements, in particular concrete elements.
FR2620359A1 (en) DEVICE FOR MOLDING A CYLINDER BLOCK OR CORRESPONDING FOUNDRY MODEL
EP0251878A1 (en) Method and apparatus for moulding housings, chests or cupboards, and housing obtained
FR2740377A1 (en) Method of casting concrete sections
FR2824772A1 (en) Interior wall building block manufacturing procedure and equipment uses mould with compartments in which mixture is compressed slowly
EP0425377A1 (en) Process and apparatus for moulding building elements
FR2570978A1 (en) Method for manufacturing construction blocks, means for the purpose of implementing this method and products thus obtained
CH249820A (en) Device for molding agglomerates, in particular concrete agglomerates.
FR2676678A1 (en) DEVICE FOR SUPPORTING AND ADJUSTING THE DRAWER HEIGHT OF A CONCRETE MOLDING MACHINE.
EP1818149A1 (en) Method of manufacturing a concrete beam, moulding tool and corresponding concrete beam
CH102210A (en) Process for the molding of hollow bodies into agglomerated and compressed products and device for its implementation.
FR2462248A1 (en) Casting of concrete sleeper with approximate hexagonal section - uses elevating and tipping mould with top splay forms substituted before tipping
WO2000030819A1 (en) Plant and moulds for making building elements from a mixture of gypsum plaster, a filler and water
FR2502537A1 (en) Shake table for forming reinforced concrete structure - has paired single-shaft vibration exciters secured to resiliently supported beams

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

Kind code of ref document: A1

Designated state(s): CH DE ES FR GB IT LI

17P Request for examination filed

Effective date: 19890227

17Q First examination report despatched

Effective date: 19900326

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

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19900807