EP0220076B1 - Vibrationstisch zur Herstellung von Erzeugnissen aus Beton - Google Patents

Vibrationstisch zur Herstellung von Erzeugnissen aus Beton 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
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.)
Expired - Lifetime
Application number
EP19860400453
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English (en)
French (fr)
Other versions
EP0220076A3 (en
EP0220076A2 (de
Inventor
Yves Henri Van De Caveye
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.)
Demler SA
Original Assignee
Demler SA
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Filing date
Publication date
Application filed by Demler SA filed Critical Demler SA
Publication of EP0220076A2 publication Critical patent/EP0220076A2/de
Publication of EP0220076A3 publication Critical patent/EP0220076A3/fr
Application granted granted Critical
Publication of EP0220076B1 publication Critical patent/EP0220076B1/de
Anticipated expiration legal-status Critical
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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 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)

Claims (7)

  1. Rütteltisch zur Herstellung von Betonerzeugnissen,bestehend aus:
    - einer ebenen horizontalon Oberseite (1) mit einer Betonform, die durch einen beweglichen Schieber mit Beton gefüllt wird, der abwechselnd in einer Vorderstellung , wobei er sich über dieser Form befindet und einer Hinterstellung ist, wobei er sich unter einem Fülltrichter befindet,
    - einem starren Gestell (3), an dem die Oberseite (1) mittels Aufhängungen (2) befestigt ist, und
    - den Hauptrüttelvorrichtungen (4, 4', 5, 5,), die so ausgeglichen sind, daß jedem Punkt der Oberseite (1) und der Form die gleiche Verdichtungsenergie zugeführt wird,
    Rütteltisch, gekennzeichnet dadurch, daß die Hauptrüttelvorrichtungen (4, 4', 5, 5,) mit den Nebenrüttelvorrichtungen (0, 9, 14, 14', 16, 16') zusammenwirken, die eine zusätzliche Verdichtungsenergie auf den vorderen Teil, gegenüber dem Fülltrichter der Oberseite (1) und der Form, übertragen, um die ungleichmäßige Füllung der letzteren auszugleichen, wobei diese Nebenrüttelvorrichtungen aus einem Nebengestell (8) mit einem kleinen Rütteltisch (10) bestehen, der unter dem vorderen Teil der Oberseite (1), parallel zu dieser, angebracht ist und durch einen Rüttelmotor (9) in Vibration versetzt wird.
  2. Rütteltisch nach Anspruch 1, gekennzeichnet dadurch, daß das Nebengestell (8) um eine mit dem starren Gestell (3) verbundene Achse schwenkbar gelagert ist und sich zwischen einer Ruhestellung, wobei es von der Oberseite (1) losgelöst ist und einer Arbeitsstellung, wobei es mit dem unteren Teil der Oberseite (1) verbunden ist , um seine Vibrationen auf deren vorderen Teil zu übertragen.
  3. Rütteltisch nach irgendeinem der Ansprüche 1 und 2, gekennzeichnet dadurch, daß der Rüttelmotor (9) kontinuierlich arbeitet.
  4. Rütteltisch nach irgendeinem der Ansprüche 1 bis 3 , gekennzeichnet dadurch, daß die Verschiebung des Nebengestells (8) zwischen seiner Ruhestellung und seiner Arbeitsstellung durch mindestens eine Verstellspindel (14, 14') gesteuert wird, die an dessen Unterteil befestigt ist.
  5. Rütteltisch nach Anspruch 4, gekennzeichnet dadurch, daß jede Verstellspindel (14, 14') aus einer flexiblen Spindel besteht, die in Ruhestellung freiliegend und in Arbeitsstellung einem bestimmten Druck ausgesetzt sind.
  6. Rütteltisch nach irgendeinem der Ansprüche 4 und 5, gekennzeichnet dadurch, daß die Verstellspindeln (14, 14') mit mindestens einer Ausgleichswinde ( 16, 16') zusammenwirken, die den kleinen Rütteltisch (10) konstant in horizontaler Lage halt.
  7. Rütteltisch nach irgendeinem der Ansprüche 1 bis 6, gekennzeichnet dadurch, daß der durch die Verstellspindeln ( 14, 14') ausgeübte Druck regelbar ist.
EP19860400453 1985-03-29 1986-03-04 Vibrationstisch zur Herstellung von Erzeugnissen aus Beton Expired - Lifetime EP0220076B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8504797 1985-03-29
FR8504797A FR2579510B1 (fr) 1985-03-29 1985-03-29 Table vibrante pour la fabrication de produits en beton

Publications (3)

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

Family

ID=9317753

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19860400453 Expired - Lifetime EP0220076B1 (de) 1985-03-29 1986-03-04 Vibrationstisch zur Herstellung von Erzeugnissen aus Beton

Country Status (3)

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EP (1) EP0220076B1 (de)
DE (1) DE3682650D1 (de)
FR (1) FR2579510B1 (de)

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 (de) *
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 (fr) * 1951-03-20 1953-07-20 Traverses En Beton Arme Sa Appareil vibrateur à fréquence réglable pendant la marche
FR1207736A (fr) * 1957-07-10 1960-02-18 Procédé pour le vibrage de béton ou de matériaux semblables, ainsi que dispositif pour l'exécution de ce procédé
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 (de) * 1963-10-16 1967-11-30 Dorst Keramikmasch Verfahren zum Pressen von Wand-, Fussboden-oder Mosaikplatten mit zueinander planparallelen Ober- und Unterseiten aus pulverfoermigem, insbesondere keramischem Material, und Presse zum Durchfuehren des Verfahrens
DE1584736B1 (de) * 1966-04-05 1972-02-03 Schlosser & Co Gmbh Fuellvorrichtung fuer Formen zum Herstellen von Formlingen aus Beton od. dgl.
DE2313752A1 (de) * 1973-03-20 1974-10-03 Ernst Wild Verfahren zur herstellung von marmorbloecken

Also Published As

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

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