EP0220076A2 - Vibrationstisch zur Herstellung von Erzeugnissen aus Beton - Google Patents

Vibrationstisch zur Herstellung von Erzeugnissen aus Beton Download PDF

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Publication number
EP0220076A2
EP0220076A2 EP86400453A EP86400453A EP0220076A2 EP 0220076 A2 EP0220076 A2 EP 0220076A2 EP 86400453 A EP86400453 A EP 86400453A EP 86400453 A EP86400453 A EP 86400453A EP 0220076 A2 EP0220076 A2 EP 0220076A2
Authority
EP
European Patent Office
Prior art keywords
vibrating
mold
vibrating table
members
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.)
Granted
Application number
EP86400453A
Other languages
English (en)
French (fr)
Other versions
EP0220076A3 (en
EP0220076B1 (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
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 Demler SA filed Critical Demler SA
Publication of EP0220076A2 publication Critical patent/EP0220076A2/de
Publication of EP0220076A3 publication Critical patent/EP0220076A3/fr
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Publication of EP0220076B1 publication Critical patent/EP0220076B1/de
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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 is intended, in a conventional manner, to receive a mold on its flat upper surface and to cooperate with a molding machine comprising a feed hopper containing the concrete to be molded, a drawer movable alternately between a first position under the hopper feed and a second position above the mold to load concrete under 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 evacuate the concrete and facilitate its penetration into the mold.
  • a molding machine comprising a feed hopper containing the concrete to be molded, a drawer movable alternately between a first position under the hopper feed and a second position above the mold to load concrete under 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 evacuate the concrete and facilitate its penetration into the mold.
  • the vibration of these products is essential in particular for tamping the concrete in the mold.
  • the vibrating table is connected by suspension members, on the one hand, to a rigid main frame, and on the other hand, to main vibrating members.
  • the vibrating members To give complete satisfaction, in particular from the point of view of the working rhythm, of the wear of the engines consecutive to the very violent tremors to which they are subject, and the safety of operating personnel, the vibrating members must meet specific criteria.
  • 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; 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 it comprises, at its front part corresponding to the front part of the mold opposite to the feed hopper, additional setting members in vibration likely to compensate for the filling imbalance of the mold between its front part and its rear part.
  • the additional vibrating members comprise an auxiliary chassis articulated around an axis integral with the main chassis and driven in vibration by a vibrating motor operating continuously, as well as actuating members of the annex chassis capable of controlling its movement between a rest position, in which it is independent of the vibrating table, and a working position, in which it engages with the members suspension of the latter, to transmit its vibrations to its front part.
  • the device which is the subject of the invention therefore consists, in fact, of superimposing in an extremely simple and inexpensive manner, on the main vibrations, additional vibrations on the only front part of the mold receiving the concrete for a shorter duration.
  • the auxiliary chassis comprises a vibrating tablet placed below the upper surface of the table, parallel to the latter and carrying, at its rear end, a vertical plate extending downwards, the assembly thus formed being associated with a rigid linkage connected to the hinge pin secured to the main chassis.
  • the vibrating tablet therefore comes into action in the working position, at the bottom of the planar upper surface of the vibrating table, in order to exert a hammering action.
  • the actuating members of the auxiliary chassis are constituted, on the one hand, by at least one actuator, in particular a flexible plating actuator mounted on the lower part of the vertical plate and controlling the displacement from bottom to top and vice versa of the annex chassis, and on the other hand, by at least one jack, in particular a flexible balancing jack mounted on the front part of the annex chassis to constantly maintain the vibrating tablet in a horizontal position.
  • the device which is the subject of the invention is generally provided with two balancing jacks and two plating jacks.
  • the veneer cylinders are in the open air and the balancing cylinders are calibrated at a pressure such that the amplitudes of the vibrating table neither reach the upper surface of the table vibrating nor the structure of the machine; on the contrary, in the working position, the plating cylinders are under pressure which makes it possible to adjust the hammering of the tablet on the vibrating table.
  • the pressure exerted by the plating cylinder or cylinders can be adjusted to allow adjustment of the hammering force, and therefore 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 first position under the hopper d feed and a second position above the mold to load concrete under the hopper then transport the latter in a determined quantity in the mold, as well as a stirrer in the form of a grid placed in the drawer to evacuate the concrete and facilitate its penetration into the mold.
  • a molding machine comprising a feed hopper containing concrete to be molded, a drawer movable alternately between a first position under the hopper d feed and a second position above the mold to load concrete under the hopper then transport the latter in a determined quantity in the mold, as well as a stirrer in the form of a grid placed in the drawer to evacuate the concrete and facilitate its penetration 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 synchronized.
  • Each of the motors 4, 4 ' is connected to the vibrators 5, 5' by means of a transmission hose 6.
  • 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 is consecutive to the advance movement of the drawer, not shown, according to the arrow A along the surface 1 of the table. This results in a filling imbalance between the front and rear parts of the mold, which can lead to non-homogeneity of the molded products obtained.
  • the invention proposes to associate with the main vibrating assembly described above, additional vibrating members consisting of an additional chassis 8 articulated around an axis 7 integral of the main chassis 3 and driven in vibration by a vibrating motor 9 of the conventional type that works continuously.
  • the auxiliary frame 8 is constituted by a vibrating tablet 10 arranged below the upper surface of the table 1 at the front part and parallel to the latter, as well as by a vertical plate 11 extending downwards fixed to the part rear 12 of the tablet 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 frame 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 vibrating table, 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 surface 1 or the suspension members 2, and a working position shown in FIG. 1 , wherein the tablet 10 is capable of engaging with the suspension members 2 of the table 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 superimpose on the main vibrations of the table 1, 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.

Landscapes

  • 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)
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 true EP0220076A2 (de) 1987-04-29
EP0220076A3 EP0220076A3 (en) 1989-01-04
EP0220076B1 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)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5594013A (en) * 1992-01-13 1997-01-14 Ethical Pharmaceuticals Limited Pharmaceutical compositions containing nifedipine and process for the preparation thereof

Citations (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
GB1158221A (en) * 1966-04-05 1969-07-16 Schlosser & Co Gmbh Device for Charging Moulds.
DE2313752A1 (de) * 1973-03-20 1974-10-03 Ernst Wild Verfahren zur herstellung von marmorbloecken

Patent Citations (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
GB1158221A (en) * 1966-04-05 1969-07-16 Schlosser & Co Gmbh Device for Charging Moulds.
DE2313752A1 (de) * 1973-03-20 1974-10-03 Ernst Wild Verfahren zur herstellung von marmorbloecken

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5594013A (en) * 1992-01-13 1997-01-14 Ethical Pharmaceuticals Limited Pharmaceutical compositions containing nifedipine and process for the preparation thereof

Also Published As

Publication number Publication date
FR2579510B1 (fr) 1989-12-15
DE3682650D1 (de) 1992-01-09
EP0220076A3 (en) 1989-01-04
FR2579510A1 (fr) 1986-10-03
EP0220076B1 (de) 1991-11-27

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