EP0220076B1 - Vibrating table for making concrete products - Google Patents

Vibrating table for making concrete products Download PDF

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Publication number
EP0220076B1
EP0220076B1 EP19860400453 EP86400453A EP0220076B1 EP 0220076 B1 EP0220076 B1 EP 0220076B1 EP 19860400453 EP19860400453 EP 19860400453 EP 86400453 A EP86400453 A EP 86400453A EP 0220076 B1 EP0220076 B1 EP 0220076B1
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EP
European Patent Office
Prior art keywords
vibrating
vibrating table
jack
table according
chassis
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EP19860400453
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German (de)
French (fr)
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EP0220076A3 (en
EP0220076A2 (en
Inventor
Yves Henri Van De Caveye
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Demler SA
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Demler SA
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    • 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 present invention relates to a vibrating table for the manufacture of concrete products.
  • This vibrating table comprises, in a conventional manner, a mold on its flat upper surface cooperating with a molding machine comprising a feed hopper containing the concrete to be molded, a slide movable alternately between a rear position under the feed hopper and a front position above the mold to load concrete into the hopper, then transport the latter, in a determined quantity, into the mold, as well as a stirrer in the form of a grid placed in the drawer to facilitate the penetration of the concrete into the mold.
  • the vibration of these products is essential in particular for tamping the concrete in the mold.
  • the rear part of the mold sees all the elements of the agitator in the form of a grid, during the forward and backward movement of the drawer, and consequently receives the concrete for a longer period of time with mixing. most important ; this results in non-negligible uniformity defects in the finished products such as concrete blocks.
  • the object of the present invention is to propose a very simple device making it possible to compensate for this phenomenon of imbalance.
  • the invention relates to a vibrating table of the type described above, characterized in that the main vibrating members cooperate with additional vibrating members capable of providing additional compaction energy to the front part, opposite to the feed hopper of the upper surface and of the mold to compensate for the filling imbalance of the latter at this level, these annex vibrating members comprising an annex chassis provided with a vibrating tablet disposed below the front part of the upper surface, parallel to the latter, and driven in vibration by a vibrating motor.
  • the idea underlying the invention therefore consists, in fact, of supplementing in an extremely simple and inexpensive manner, the main vibrations by additional vibrations acting on the only front part of the mold receiving the concrete for a shorter duration.
  • the auxiliary chassis is articulated on an axis integral with the rigid chassis and capable of moving between a rest position in which it is independent of the main vibrating assembly and a working position in which it comes into engagement with the upper surface of the table to transmit its vibrations to its front part.
  • the vibrating motor preferably operates continuously but is in fact only active in the working position; in this position, in fact, the vibrating tablet can come into action at the lower part of the flat upper surface to exert a hammering action there.
  • the movement of the annex chassis between its rest position and its working position is controlled by at least one plating cylinder mounted at its lower part.
  • two plating cylinders are generally provided, each consisting of a flexible cylinder which is in the open air in the rest position and under a given pressure in the working position.
  • these plating jacks cooperate with at least one, preferably two balancing jacks capable of constantly keeping the vibrating tablet in a horizontal position.
  • the plating cylinders In the rest position, the plating cylinders are in the open air and the balancing cylinders are calibrated at a pressure such that the amplitudes of the vibrating table reach neither the surface of the vibrating table nor the structure of the machine ; on the contrary, in the working position, the plating cylinders are under a pressure which makes it possible to adjust the hammering of the shelf below the flat upper surface.
  • the pressure exerted by the plating cylinder or cylinders can be adjusted to allow adjustment of the hammering force exerted by the vibrating tablet and, consequently, of the compensation action.
  • the hammering force can be independently adjusted by adjusting the pressure of the flexible plating jacks as well as the duration of the latter.
  • This table is intended to receive on its upper surface 1 a mold, not shown, and to cooperate with a molding machine comprising a feed hopper containing concrete to be molded, a drawer movable alternately between a rear position under the hopper. feed and a front position above the mold to load concrete under the hopper then transport the latter in a quantity determined for the mold, as well as a stirrer in the form of a grid placed in the drawer to facilitate the penetration of the concrete into the mold.
  • a molding machine comprising a feed hopper containing concrete to be molded, a drawer movable alternately between a rear position under the hopper. feed and a front position above the mold to load concrete under the hopper then transport the latter in a quantity determined for the mold, as well as a stirrer in the form of a grid placed in the drawer to facilitate the penetration of the concrete into the mold.
  • FIGS. 1 to 3 These are bodies conventionally used in the field of concrete molding which, for the sake of brevity, have not been shown in FIGS. 1 to 3.
  • the vibrating table comprises, in addition to its flat upper surface 1, a rigid frame 3 to which it is connected by means of suspension members 2, as well as main vibrating members constituted, according to the figures, by two electric motors 4 and 4 'located in parallel, each cooperating with a multi-directional vibrator 5, 5', these two elements 5, 5 'rotating in opposite directions and being synchronized so as to give a vertical unidirectional vibration.
  • Each of the motors 4, 4 ' is connected to the vibrators 5, 5' by means of a flexible transmission 6.
  • main vibrating members are only given by way of example and one could, for example, replace the two vibrating assemblies 5, 5 '- motors 4, 4' by two vibrating motors without this is outside the scope of the invention.
  • the only essential feature is that the vibrating assembly is perfectly balanced between its front, rear, right and left parts to provide the same compaction energy at each point of the mold.
  • the filling of the mold occurs under the action, on the one hand, of the displacement of the drawer not shown according to the arrow A along the surface 1 of the table, and, on the other hand, of the movement d agitation of the grid placed in the drawer.
  • the invention proposes to associate with the main vibrating assembly described above, annex vibrating members consisting of an annex chassis 8 articulated on an axis 7 secured to the chassis main 3 and driven in vibration by a vibrating motor 9 of the conventional type which operates continuously.
  • the auxiliary frame 8 is constituted by a vibrating tablet 10 disposed below the upper surface 1 of the table at the front part and parallel to the latter, as well as by a vertical plate 11 extending downwards, fixed to the rear part 12 of the shelf 10.
  • the assembly constituted by the vibrating tablet 10 and the vertical plate 11 is associated with a rigid linkage 13 connected to the hinge pin 7 secured to the main chassis 3.
  • the auxiliary chassis 8 is capable of moving in a vertical back-and-forth movement shown diagrammatically by the arrow B between a rest position shown in FIG. 2, in which it is completely independent of the surface 1, that is to say that is to say that, in this position, the amplitude of the vibrations imposed on the tablet 10 by the vibrating motor 9 is insufficient for it to reach the lower part of the surface 1 and a working position shown in FIG. 1, wherein the tablet 10 is capable of engaging with the surface 1 to transmit its vibrations to its front part.
  • This back-and-forth movement according to arrow B of the whole of the annex chassis 8 is controlled by two flexible plating jacks 14, 14 'mounted at the lower part 15 of the vertical plate 11, which are located at the free air in the rest position ( Figure 2) and under an adjustable pressure in the working position ( Figure 1) to allow the tablet 10 to supplement the main vibrations of the surface 1 with an adjustable hammering force.
  • the cladding cylinders 14, 14 ' are associated with balancing cylinders 16, 16' which are mounted on the front part of the auxiliary frame 8 to constantly maintain the vibrating table 10 in a horizontal position.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)
  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)

Description

La présente invention se rapporte à une table vibrante pour la fabrication de produits en béton.The present invention relates to a vibrating table for the manufacture of concrete products.

Cette table vibrante comporte, de manière classique, un moule sur sa surface supérieure plane coopérant avec une machine à mouler comportant une trémie d'alimentation contenant le béton à mouler, un tiroir mobile alternativement entre une position arrière sous la trémie d'alimentation et une position avant au-dessus du moule pour se charger en béton sous la trémie, puis transporter ce dernier, en quantité déterminée, dans le moule, ainsi qu'un agitateur sous forme de grille placé dans le tiroir pour faciliter la pénétration du béton dans le moule.This vibrating table comprises, in a conventional manner, a mold on its flat upper surface cooperating with a molding machine comprising a feed hopper containing the concrete to be molded, a slide movable alternately between a rear position under the feed hopper and a front position above the mold to load concrete into the hopper, then transport the latter, in a determined quantity, into the mold, as well as a stirrer in the form of a grid placed in the drawer to facilitate the penetration of the concrete into the mold.

Il s'agit des installations de type classique destinées à la fabrication d'objets en béton vibré, tels que des parpaings.These are installations of the conventional type intended for the manufacture of vibrated concrete objects, such as concrete blocks.

Le vibrage de ces produits est indispensable en particulier pour tasser le béton se trouvant dans le moule.The vibration of these products is essential in particular for tamping the concrete in the mold.

A cet effet, de manière classique, la table comporte :

  • une surface supérieure horizontale plane avec le moule,
  • un châssis rigide auquel cette surface est reliée au moyen d'organes de suspension, et
  • des organes principaux de mise en vibration équilibrés de façon à pouvoir apporter la même énergie de compactage à chaque point de la surface supérieure et du moule.
To this end, in a conventional manner, the table includes:
  • a flat horizontal top surface with the mold,
  • a rigid frame to which this surface is connected by means of suspension members, and
  • main vibrating organs balanced so as to be able to provide the same compaction energy at each point of the upper surface and of the mold.

Pour donner entière satisfaction, notamment du point de vue du rythme de travail, de l'usure des moteurs consécutive aux secousses très violentes auxquelles ils sont soumis et de la sécurité du personnel d'exploitation, les organes principaux de mise en vibration doivent répondre à des critères particuliers.To give complete satisfaction, in particular from the point of view of the working rhythm, the wear of the engines following the very violent tremors to which they are subjected and the safety of the operating personnel, the main vibrating organs must respond to particular criteria.

On a déjà proposé de nombreux organes de ce type, parmi lesquels on peut noter ceux décrits dans les demandes de brevet français 2 517 568, 2 529 104, 2 552 685 ou encore 1 034 200.Many organs of this type have already been proposed, including those described in French patent applications 2,517,568, 2,529,104, 2,552,685 or 1,034,200.

Il est cependant connu que toutes les machines décrites ci-dessus ont du toujours l'inconvénient de présenter un déséquilibre dû aux différence de remplissage du moule entre sa partie avant et sa partie arrière.It is however known that all the machines described above always have the disadvantage of having an imbalance due to the difference in filling of the mold between its front part and its rear part.

En effet, la partie arrière du moule voit défiler, lors du mouvement d'avance et de recul du tiroir, tous les éléments de l'agitateur en forme de grille et reçoit, par suite, le béton pendant une durée plus longue avec un brassage plus important ; il en résulte des défauts d'uniformité non négligeables des produits finis tels que des parpaings.In fact, the rear part of the mold sees all the elements of the agitator in the form of a grid, during the forward and backward movement of the drawer, and consequently receives the concrete for a longer period of time with mixing. most important ; this results in non-negligible uniformity defects in the finished products such as concrete blocks.

La présente invention a pour objet de proposer un dispositif très simple permettant de compenser ce phénomène de déséquilibre.The object of the present invention is to propose a very simple device making it possible to compensate for this phenomenon of imbalance.

A cet effet, l'invention concerne une table vibrante du type décrit ci-dessus, caractérisée en ce que les organes principaux de mise en vibration coopèrent avec des organes annexes de mise en vibration susceptibles d'apporter une énergie de compactage complémentaire à la partie avant, opposée à la trémie d'alimentation de la surface supérieure et du moule pour compenser le déséquilibre de remplissage de ce dernier à ce niveau, ces organes annexes de mise en vibration comportant un châssis annexe muni d'une tablette vibrante disposée au-dessous de la partie avant de la surface supérieure, parallèlement à celle-ci, et entraîné en vibration par un moteur vibrant.To this end, the invention relates to a vibrating table of the type described above, characterized in that the main vibrating members cooperate with additional vibrating members capable of providing additional compaction energy to the front part, opposite to the feed hopper of the upper surface and of the mold to compensate for the filling imbalance of the latter at this level, these annex vibrating members comprising an annex chassis provided with a vibrating tablet disposed below the front part of the upper surface, parallel to the latter, and driven in vibration by a vibrating motor.

L'idée à la base de l'invention consiste donc, en fait, à compléter de façon extrêmement simple et peu onéreuse, les vibrations principales par des vibrations annexes agissant sur la seule partie avant du moule recevant le béton pendant une durée plus courte.The idea underlying the invention therefore consists, in fact, of supplementing in an extremely simple and inexpensive manner, the main vibrations by additional vibrations acting on the only front part of the mold receiving the concrete for a shorter duration.

Selon une autre caractéristique de l'invention, le châssis annexe est articulé sur un axe solidaire du châssis rigide et susceptible de se déplacer entre une position de repos dans laquelle il est indépendant de l'ensemble vibrant principal et une position de travail dans laquelle il vient en prise avec la surface supérieure de la table pour transmettre ses vibrations à sa partie avant.According to another characteristic of the invention, the auxiliary chassis is articulated on an axis integral with the rigid chassis and capable of moving between a rest position in which it is independent of the main vibrating assembly and a working position in which it comes into engagement with the upper surface of the table to transmit its vibrations to its front part.

Le moteur vibrant fonctionne de préférence en continu mais n'est en fait actif qu'en position de travail ; dans cette position en effet, la tablette vibrante peut venir en action à la partie inférieure de la surface supérieure plane pour y exercer une action de martelage.The vibrating motor preferably operates continuously but is in fact only active in the working position; in this position, in fact, the vibrating tablet can come into action at the lower part of the flat upper surface to exert a hammering action there.

Selon une autre caractéristique de l'invention, le déplacement du châssis annexe entre sa position de repos et sa position de travail, est commandé par au moins un vérin de plaquage monté à sa partie inférieure.According to another characteristic of the invention, the movement of the annex chassis between its rest position and its working position is controlled by at least one plating cylinder mounted at its lower part.

Pour des raisons de symétrie, il est généralement prévu deux vérins de placage constitués, chacun, par un vérin souple qui se trouve à l'air libre en position de repos et sous une pression donnée en position de travail.For reasons of symmetry, two plating cylinders are generally provided, each consisting of a flexible cylinder which is in the open air in the rest position and under a given pressure in the working position.

Selon une autre caractéristique de l'invention, ces vérins de placage coopèrent avec au moins un, de préférence deux vérins d'équilibrage susceptibles de maintenir constamment la tablette vibrante en position horizontale.According to another characteristic of the invention, these plating jacks cooperate with at least one, preferably two balancing jacks capable of constantly keeping the vibrating tablet in a horizontal position.

En position de repos, les vérins de placage sont à l'air libre et les vérins d'équilibrage sont tarés à une pression telle que les amplitudes de la tablette vibrante n'atteignent ni la surface de la table vibrante ni la structure de la machine ; au contraire, en position de travail, les vérins de placage sont sous une pression qui permet de régler le martelage de la tablette au-dessous de la surface supérieure plane.In the rest position, the plating cylinders are in the open air and the balancing cylinders are calibrated at a pressure such that the amplitudes of the vibrating table reach neither the surface of the vibrating table nor the structure of the machine ; on the contrary, in the working position, the plating cylinders are under a pressure which makes it possible to adjust the hammering of the shelf below the flat upper surface.

Selon une autre caractéristique de l'invention, la pression exercée par le ou les vérins de placage peut être réglée pour permettre un réglage de la force de martelage exercée par la tablette vibrante et, par suite, de l'action de compensation.According to another characteristic of the invention, the pressure exerted by the plating cylinder or cylinders can be adjusted to allow adjustment of the hammering force exerted by the vibrating tablet and, consequently, of the compensation action.

Il s'agit donc là d'un dispositif extrêmement simple, susceptible de s'appliquer à tous les types de moule, permettant de ne rien déséquilibrer de la vibration principale et d'un réglage extrêmement simple et néanmoins précis.This is therefore an extremely simple device, capable of being applied to all types of mold, allowing nothing to unbalance the main vibration and an extremely simple and nevertheless precise adjustment.

Ce réglage est, en fait, triple, étant donné que l'on peut régler indépendamment la force vibrante, la force du martelage en réglant la pression des vérins souples de placage ainsi que la durée de ce dernier.This adjustment is, in fact, threefold, since the vibrating force, the hammering force can be independently adjusted by adjusting the pressure of the flexible plating jacks as well as the duration of the latter.

Les caractéristiques de la table vibrante qui fait l'objet de l'invention seront décrites plus en détail en se référant aux dessins annexés dans lesquels :

  • les figures 1 et 2 sont des coupes schématiques d'une table vibrante selon l'invention respectivement en position de travail et en position de repos, tandis que
  • la figure 3 est une vue de dessus de cette table vibrante.
The characteristics of the vibrating table which is the subject of the invention will be described in more detail with reference to the accompanying drawings in which:
  • FIGS. 1 and 2 are schematic sections of a vibrating table according to the invention respectively in the working position and in the rest position, while
  • Figure 3 is a top view of this vibrating table.

Cette table est destinée à recevoir sur sa surface supérieure 1 un moule, non représenté, et à coopérer avec une machine à mouler comportant une trémie d'alimentation contenant du béton à mouler, un tiroir mobile alternativement entre une position arrière sous la trémie d'alimentation et une position avant au-dessus du moule pour se charger en béton sous la trémie puis transporter ce dernier en quantité déterminée pour le moule, ainsi qu'un agitateur sous forme de grille placé dans le tiroir pour faciliter la pénétration du béton dans le moule.This table is intended to receive on its upper surface 1 a mold, not shown, and to cooperate with a molding machine comprising a feed hopper containing concrete to be molded, a drawer movable alternately between a rear position under the hopper. feed and a front position above the mold to load concrete under the hopper then transport the latter in a quantity determined for the mold, as well as a stirrer in the form of a grid placed in the drawer to facilitate the penetration of the concrete into the mold.

Il s'agit là d'organes utilisés classiquement dans le domaine du moulage du béton qui, dans un but de brièveté, n'ont pas été représentés sur les figures 1 à 3.These are bodies conventionally used in the field of concrete molding which, for the sake of brevity, have not been shown in FIGS. 1 to 3.

Selon ces figures, la table vibrante comporte, outre sa surface supérieure plane 1, un châssis rigide 3 auquel elle est reliée au moyen d'organes de suspension 2, ainsi que des organes principaux de mise en vibration constitués, selon les figures, par deux moteurs électriques 4 et 4' situés en parallèle, coopérant chacun avec un vibrateur multi-directionnel 5, 5', ces deux éléments 5, 5' tournant en sens opposé et étant synchronisés de façon à donner une vibration unidirectionnelle verticale. Chacun des moteurs 4, 4' est relié aux vibrateurs 5, 5' au moyen d'un flexible de transmission 6.According to these figures, the vibrating table comprises, in addition to its flat upper surface 1, a rigid frame 3 to which it is connected by means of suspension members 2, as well as main vibrating members constituted, according to the figures, by two electric motors 4 and 4 'located in parallel, each cooperating with a multi-directional vibrator 5, 5', these two elements 5, 5 'rotating in opposite directions and being synchronized so as to give a vertical unidirectional vibration. Each of the motors 4, 4 'is connected to the vibrators 5, 5' by means of a flexible transmission 6.

Bien entendu, ces organes principaux de mise en vibration ne sont cités qu'à titre d'exemple et l'on pourrait, par exemple, remplacer les deux ensembles vibratoires 5, 5' - moteurs 4, 4' par deux moteurs vibrants sans pour cela sortir du cadre de l'invention.Of course, these main vibrating members are only given by way of example and one could, for example, replace the two vibrating assemblies 5, 5 '- motors 4, 4' by two vibrating motors without this is outside the scope of the invention.

La seule caractéristique indispensable est que l'ensemble vibrant soit parfaitement équilibré entre ses parties avant, arrière, droite et gauche pour apporter la même énergie de compactage à chaque point du moule.The only essential feature is that the vibrating assembly is perfectly balanced between its front, rear, right and left parts to provide the same compaction energy at each point of the mold.

Comme déjà indiqué, le remplissage du moule se produit sous l'action, d'une part, du déplacement du tiroir non représenté selon la flèche A le long de la surface 1 de la table, et, d'autre part, du mouvement d'agitation de la grille placée dans le tiroir. Il s'ensuit un déséquilibre de remplissage entre les parties avant et arrière du moule pouvant entraîner une non-homogénéité des produits moulés obtenus.As already indicated, the filling of the mold occurs under the action, on the one hand, of the displacement of the drawer not shown according to the arrow A along the surface 1 of the table, and, on the other hand, of the movement d agitation of the grid placed in the drawer. This results in a filling imbalance between the front and rear parts of the mold, which can cause non-homogeneity of the molded products obtained.

Pour remédier à cet inconvénient, l'invention propose d'associer à l'ensemble principal de mise en vibration décrit ci-dessus, des organes annexes de mise en vibration se composant d'un châssis annexe 8 articulé sur un axe 7 solidaire du châssis principal 3 et entraîné en vibration par un moteur vibrant 9 de type classique qui fonctionne en permanence.To remedy this drawback, the invention proposes to associate with the main vibrating assembly described above, annex vibrating members consisting of an annex chassis 8 articulated on an axis 7 secured to the chassis main 3 and driven in vibration by a vibrating motor 9 of the conventional type which operates continuously.

Le châssis annexe 8 est constitué par une tablette vibrante 10 disposée au-dessous de la surface supérieure 1 de la table à la partie avant et parallèlement à cette dernière, ainsi que par une plaque verticale 11 s'étendant vers le bas, fixée à la partie arrière 12 de la tablette 10.The auxiliary frame 8 is constituted by a vibrating tablet 10 disposed below the upper surface 1 of the table at the front part and parallel to the latter, as well as by a vertical plate 11 extending downwards, fixed to the rear part 12 of the shelf 10.

L'ensemble constitué par la tablette vibrante 10 et la plaque verticale 11 est associé à une tringlerie rigide 13 reliée à l'axe d'articulation 7 solidaire du châssis principal 3.The assembly constituted by the vibrating tablet 10 and the vertical plate 11 is associated with a rigid linkage 13 connected to the hinge pin 7 secured to the main chassis 3.

Le châssis annexe 8 est susceptible de se déplacer selon un mouvement vertical de va-et-vient schématisé par la flèche B entre une position de repos représentée à la figure 2, dans laquelle il est totalement indépendant de la surface 1, c'est-à-dire que, dans cette position, l'amplitude des vibrations imposées à la tablette 10 par le moteur vibrant 9 est insuffisante pour que celle-ci atteigne la partie inférieure de la surface 1 et une position de travail représentée à la figure 1, dans laquelle la tablette 10 est susceptible de venir en prise avec la surface 1 pour transmettre ses vibrations à sa partie avant.The auxiliary chassis 8 is capable of moving in a vertical back-and-forth movement shown diagrammatically by the arrow B between a rest position shown in FIG. 2, in which it is completely independent of the surface 1, that is to say that is to say that, in this position, the amplitude of the vibrations imposed on the tablet 10 by the vibrating motor 9 is insufficient for it to reach the lower part of the surface 1 and a working position shown in FIG. 1, wherein the tablet 10 is capable of engaging with the surface 1 to transmit its vibrations to its front part.

Ce mouvement de va-et-vient selon la flèche B de l'ensemble du châssis annexe 8 est commandé par deux vérins souples de placage 14, 14' montés à la partie inférieure 15 de la plaque verticale 11, qui se trouvent à l'air libre en position de repos (figure 2) et sous une pression réglable en position de travail (figure 1) pour permettre à la tablette 10 de compléter les vibrations principales de la surface 1 par une force de martelage réglable.This back-and-forth movement according to arrow B of the whole of the annex chassis 8 is controlled by two flexible plating jacks 14, 14 'mounted at the lower part 15 of the vertical plate 11, which are located at the free air in the rest position (Figure 2) and under an adjustable pressure in the working position (Figure 1) to allow the tablet 10 to supplement the main vibrations of the surface 1 with an adjustable hammering force.

Les vérins de placage 14, 14' sont associés à des vérins d'équilibrage 16, 16' qui sont montés à la partie avant du châssis annexe 8 pour maintenir constamment la tablette vibrante 10 en position horizontale.The cladding cylinders 14, 14 'are associated with balancing cylinders 16, 16' which are mounted on the front part of the auxiliary frame 8 to constantly maintain the vibrating table 10 in a horizontal position.

Claims (7)

  1. Vibrating table for manufacturing concrete products comprising:
    - a flat horizontal upper surface (1) with a mould supplied with concrete via a slide valve which can move alternately between a front position in which it is located above this mould and a rear position in which it is located below a feed hopper;
    - a rigid chassis (3) to which the surface (1) is connected by means of suspension means (2); and
    - main vibrating members (4, 4', 5, 5') balanced so as to be able to apply the same compacting energy at each point of the surface (1) and of the mould;
    the vibrating table being characterised in that the main vibrating members (4,4', 5,5') cooperate with auxiliary vibrating members (8, 9, 14, 14', 16, 16') which apply complementary compacting energy to the front part, opposite the hopper feeding the upper surface (1) and the mould so as to compensate the imbalance in the filling of the latter at this level, these auxiliary vibrating members comprising an auxiliary chassis (8) which is equipped with a small upper vibrating table (10) arranged below the front part of the surface (1), parallel thereto, and driven so as to vibrate by a vibrating motor (9).
  2. Vibrating table according to Claim 1, characterised in that the auxiliary chassis (8) is articulated about a shaft (7) integral with the rigid chassis (3) and moves between a rest position in which it is independent of the surface (1) and an operating position in which it engages with the lower part of the surface (1) to transmit its vibrations to the front section thereof.
  3. Vibrating table according to either of Claims 1 and 2, characterised in that the vibrating motor (9) operates permanently.
  4. Vibrating table according to any one of Claims 1 to 3, characterised in that the movement of the auxiliary chassis (8) between its rest position and its operating position is controlled by means of a flattening jack (14,14') mounted at the lower part (15) thereof.
  5. Vibrating table according to Claim 4, characterised in that each flattening jack (14,14') comprises a flexible jack which is situated in the open air in the rest position and at a given pressure in the operating position.
  6. Vibrating table according to either of Claims 4 and 5, characterised in that the flattening jack (jacks) (14,14') cooperates (cooperate) with at least one balancing jack (16,16') which can constantly maintain the small vibrating table (10) in a horizontal position.
  7. Vibrating table according to any one of Claims 1 to 6, characterised in that the pressure exerted by the flattening jack (jacks) (14,14') is adjustable.
EP19860400453 1985-03-29 1986-03-04 Vibrating table for making concrete products Expired - Lifetime EP0220076B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8504797 1985-03-29
FR8504797A FR2579510B1 (en) 1985-03-29 1985-03-29 VIBRATING TABLE FOR THE MANUFACTURE OF CONCRETE PRODUCTS

Publications (3)

Publication Number Publication Date
EP0220076A2 EP0220076A2 (en) 1987-04-29
EP0220076A3 EP0220076A3 (en) 1989-01-04
EP0220076B1 true EP0220076B1 (en) 1991-11-27

Family

ID=9317753

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19860400453 Expired - Lifetime EP0220076B1 (en) 1985-03-29 1986-03-04 Vibrating table for making concrete products

Country Status (3)

Country Link
EP (1) EP0220076B1 (en)
DE (1) DE3682650D1 (en)
FR (1) FR2579510B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9200607D0 (en) * 1992-01-13 1992-03-11 Ethical Pharma Ltd Pharmaceutical compositions containing nifedipine and process for the preparation thereof

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE395580A (en) *
GB190918242A (en) * 1909-08-07 1909-12-31 Frank George Symmonds Price Improvements in Apparatus for Mixing and Consolidating Concrete and like Materials.
US1867144A (en) * 1930-01-24 1932-07-12 Gelbman Louis Concrete molding machine
FR1034200A (en) * 1951-03-20 1953-07-20 Traverses En Beton Arme Sa Vibrating device with adjustable frequency while walking
FR1207736A (en) * 1957-07-10 1960-02-18 Process for vibrating concrete or similar materials, as well as device for carrying out this process
GB896643A (en) * 1959-11-09 1962-05-16 Stanton Ironworks Co Ltd Improvements in and relating to the casting of concrete or like bodies
DE1255554B (en) * 1963-10-16 1967-11-30 Dorst Keramikmasch Method for pressing wall, floor or mosaic panels with top and bottom surfaces plane-parallel to one another made of powdery, in particular ceramic material, and a press for carrying out the method
DE1584736B1 (en) * 1966-04-05 1972-02-03 Schlosser & Co Gmbh Filling device for molds for the production of moldings from concrete or the like.
DE2313752A1 (en) * 1973-03-20 1974-10-03 Ernst Wild PROCESS FOR THE PRODUCTION OF MARBLE BLOCKS

Also Published As

Publication number Publication date
FR2579510B1 (en) 1989-12-15
DE3682650D1 (en) 1992-01-09
EP0220076A3 (en) 1989-01-04
EP0220076A2 (en) 1987-04-29
FR2579510A1 (en) 1986-10-03

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