EP0117877B1 - Vibration transmission member - Google Patents

Vibration transmission member Download PDF

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Publication number
EP0117877B1
EP0117877B1 EP83101698A EP83101698A EP0117877B1 EP 0117877 B1 EP0117877 B1 EP 0117877B1 EP 83101698 A EP83101698 A EP 83101698A EP 83101698 A EP83101698 A EP 83101698A EP 0117877 B1 EP0117877 B1 EP 0117877B1
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EP
European Patent Office
Prior art keywords
supporting carrier
layer
element according
recesses
sheet
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
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EP83101698A
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German (de)
French (fr)
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EP0117877A1 (en
Inventor
Sigmund K. Lehmann
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.)
Conmat AG
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Conmat AG
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Filing date
Publication date
Application filed by Conmat AG filed Critical Conmat AG
Priority to EP83101698A priority Critical patent/EP0117877B1/en
Priority to AT83101698T priority patent/ATE19485T1/en
Priority to DE8383101698T priority patent/DE3363246D1/en
Publication of EP0117877A1 publication Critical patent/EP0117877A1/en
Application granted granted Critical
Publication of EP0117877B1 publication Critical patent/EP0117877B1/en
Expired legal-status Critical Current

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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B3/00—Methods or apparatus specially adapted for transmitting mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • 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
    • B28B1/081—Vibration-absorbing means
    • 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
    • B28B7/00—Moulds; Cores; Mandrels
    • B28B7/36—Linings or coatings, e.g. removable, absorbent linings, permanent anti-stick coatings; Linings becoming a non-permanent layer of the moulded article

Definitions

  • the present invention relates to an element for transmitting vibrations in a vibrating or vibrating device.
  • Said element is said to be used in the industrial production of all types of concrete and cement products, in particular slabs, and in the rational production of molded articles from other materials in a wide range of technical activities, such as filling, distributing, metering and compacting processes on vibrating or vibrating devices be applicable.
  • FIGS. 1 a and 1 b The basic construction according to FIGS. 1 a and 1 b is operated according to the so-called push-through method and the other basic construction according to FIGS. 2 a and 2 b according to the so-called hermetic method.
  • 1 and 2a show the devices after the mold cavity has been filled with filling material and
  • FIGS. 1b and 2b show the devices when demolding the filling material compressed into a plate.
  • the construction according to FIG. 1 has a mold base 1 which normally consists of a solid steel plate, which, according to FIG. 1a, lies freely on a vibrating table 2 and is freely surrounded by the mold frame 3 which is arranged at a distance above the vibrating table.
  • Rods 4 connected to a lifting device, not shown, extend freely through the vibrating table 2 and engage the mold base 1 in order to bring it to the desired height with respect to the mold frame.
  • a vibrating device 5 engages with the underside of the vibrating table 2 in order to generate the desired vibrations, which are then transmitted via the vibrating table 2 to the mold base 1 and thus to the filling material 6.
  • On the mold base 1 there is usually a structured plastic mat 7 on its surface facing the filling material.
  • the filling height h for the product to be produced can be varied by setting different relative positions of the mold base 1 with respect to the mold frame 3.
  • Very thin components can be produced in relation to the edge length, since the finished molding is ejected lying on the mold base.
  • Vibrations generated for concrete compaction are transferred directly into the material, without hindrance or damping by the mass of any machine parts, such as mold frames, which are loaded on the vibration table.
  • the vibrating table 2 has a vibrating table 2, which at the same time forms the mold base.
  • the vibrating table 2 is covered with a plastic mat 7, which is structured on its upper side and has a raised edge.
  • a molding frame 3 lies sealingly on the upstanding border, which forms the molding cavity with the mat for receiving the filling material 6.
  • the vibrating table or mold base is set in vibration directly by means of a vibrating device (not shown), with a press again exerting the desired pressing pressure on the entire filling material, as in the device according to FIG. 1. 2b, the mold frame 3 is lifted off the mold base 2 or the plastic mat 7 according to FIG. 2b, the compacted component remaining clamped in the frame 3 when it is lifted off.
  • the mold cavities are tight at the bottom, which can be positive when processing wet materials.
  • the device generates relatively little noise, since there is no steel plate lying freely in the mold, which is caused to vibrate by vibrating forces.
  • the rubber or plastic layers on the vibrating table are relatively dimensionally stable, i.e. they tend less to flow and / or creep due to the edge clamping by the mold frame.
  • the aim of the present invention is to provide an element for transmitting vibrations in a vibrating or vibrating device for processing a wide variety of materials, which has a low noise emission and which, when used as a molded floor or vibrating table for the production of, in particular, plate-like concrete elements, creates a vibrating or vibrating device, which allows the use of the above-mentioned advantages of the two basic constructions according to FIGS. 1 and 2.
  • FIG. 3 shows a cross section through part of a mold base or vibration table according to the invention
  • the plate-like element according to FIG. 3 has a rigid or dimensionally stable support structure in the form of a support beam 10, which can have a rust-like structure and can be used as a mold base or a vibrating table.
  • the support structure 10 On its underside, the support structure 10 is non-positively and interchangeably connected to a wear-resistant plate 11, e.g. screwed.
  • the support structure 10 On its upper side, the support structure 10 is non-positively connected to a perforated sheet 12, e.g. connected by welding.
  • the sheet 12 has circular through holes 13 for the purpose of reducing the noise, the hole proportion being at least 20% of the sheet area.
  • the unit formed from the support structure 10 and perforated plate 12 is covered on all sides with the exception of the underside with a rubber-elastic and / or vibration-damping mass 14, which also fills the cutouts in the interior of the support structure 10, and is intimately connected.
  • All elastomers including cellular or porous) based on natural or synthetic rubber, synthetic rubber and / or plastics (with or without filler or reinforcing constituents) with viscoelastic properties are suitable as mass 14, with the suspension and in other cases in certain cases Cases where the damping properties are in the foreground.
  • the mass 14 is preferably applied in the casting process. As mass 14 comes e.g. Polyethylene, cast polyurethane, polyvinil chloride, nitrile rubber or polychlorobutadiene in question.
  • the enveloping mass 14 has a high sound-reducing effect and offers the possibility of forming a layer 15 lying above the perforated plate 12 and a lateral border 16 of the mold base, both of which can be created in such a way that they meet the respective application.
  • the unit formed from the elastomer layer 15, the perforated plate 12 and the support structure 10 can be regarded as a three-layer body, the sound radiation in particular if the layer thickness ratios (layer thickness of the elastomer layer 15, the perforated plate layer 12 and the support structure 10) and the proportion of holes in the perforated plate are selected appropriately is reduced through the three layers without impairing the transmission of vibrations.
  • the element according to FIG. 3 is particularly suitable for use as a molded floor or vibrating table for the production of concrete elements, such as concrete slabs, in a concrete press roughly corresponding to those according to FIGS. 1 and 2.
  • the element according to FIG. 3 replaces the steel plate 1 together with it Mat 7 resp. the vibrating table 2 together with the plastic mat 7.
  • the vibrating device in the example according to FIG. 1 continues to act on the vibrating table 2 and in the example according to FIG. 2 now on the underside of the wear plate + 1, and the frame 3 acts in both examples with the suitably designed side border 16 together for this purpose.
  • the lateral border 16 can be designed as a seal between the mold base and the mold frame 3 when internal pressure occurs, originating from the pressing force acting on the filling material from above, in the sense of a lip sleeve or sealing packing, as shown in FIGS. 4a to 4c.
  • the upper side of the top layer 15 made of elastomer, which is in direct contact with the filling material to be processed into a shaped piece, is preferably structured in order to give the piece to be manufactured the desired surface structure.
  • the elastomer layer 15 and the perforated plate 12 interact in a highly advantageous manner in order to remove the separating effect between the upper side of the mold base and the compressed or compacted molding, eg made of concrete.
  • the elastomer layer 15 lying above the perforated plate 12 should have good suspension properties.
  • the deflection of the elastomer layer 15 is greater at the points above the holes 13 of the perforated plate 12 than above the points where the plate 12 is not perforated and thus the elastomer layer 15 is supported.
  • the elastomer layer 15 After the pressing process, i.e. when the filling material is relieved of the pressing pressure, the elastomer layer 15 also springs back to its initial position to different extents in accordance with the previous different deflections.
  • the molded part compressed or compressed from the filling material e.g. a concrete slab, partly from the elastomer layer, which supports the separation effect.
  • the holes 13 of the layer formed by the perforated plate 12 can be completely filled with air or another gas or with the plastic compound 14.
  • the layer thickness ratios of elastomer layer 15 and perforated plate 12 can be matched to the respective filling material / pressed material and to the pressing pressures to be maintained.
  • the springback differences, and thus the separation effect, are greatest, respectively. best with thin layer 15 and relatively thick perforated plate 12. It is also due to the composition of the Consider good press. If this is, for example, coarse-grained, an optimal separation effect can be achieved with rather thick layers 12 and 15 and with coarse-perforated perforated holes.
  • masses 14 of different properties can be used at the different locations of the element according to FIG.
  • a plate-shaped, rigid or dimensionally stable cast body 17 made of cast iron or cast steel could also be used, as shown in FIG. 5, the outer layer 18 of which has an outer layer 18 which is open to the outside, e.g. circular recesses 13 is provided, which outer layer 18 takes over the function of the perforated plate 12 with a corresponding proportion of holes.
  • such a cast body which can also be provided with recesses on the inside or on its underside, is encased and intimately connected with a mass 14, so that an upper layer located above the grid-like recesses in the outer layer and one Border is formed from the mass 14.
  • the underside of the support structure 10 is also non-positive with a perforated sheet 12, e.g. by means of a welded joint, connected and covered with a layer 15 from the mass 14 and intimately connected.
  • Both the lower perforated plate 12 and the layer 15 can be excluded in an area 18 which can be configured in a suitable manner in order to come into engagement with a vibrating device.
  • the element according to FIG. 5 could also have recesses 13 in the lower outer layer of the cast body 17 and a further layer made of the mass 14 covering this outer layer and thereby be formed on the underside corresponding to the element according to FIG. 6.
  • the perforated plate 12 is preferably made of metal, such as steel. However, it can also be made of a suitable plastic, which in the present context has the same or a similar effect as a metal and is therefore also suitable as a material for the perforated plate 12.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Floor Finish (AREA)
  • Springs (AREA)
  • Vibration Prevention Devices (AREA)
  • Pulleys (AREA)
  • Gear-Shifting Mechanisms (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)

Abstract

1. Element for the transmittal of vibrations in a vibrating or jarring apparatus, characterized in that the element is a laminated body, whereby one layer is structured as a supporting carrier (10) resistant to bending and at least one second layer as perforated sheet (12) mounted force-locked to one outer surface of the supporting carrier, and in that a further layer (15) of a material (14) having rubber elastic and/or vibration absorbing properties is applied to at least the outer surface of the sheet.

Description

Die vorliegende Erfindung betrifft ein Element zur Uebertragung von Vibrationen ineiner Vibrations- oder Rüttelvorrichtung.The present invention relates to an element for transmitting vibrations in a vibrating or vibrating device.

Das besagte Element soll bei der industriellen Fertigung von Beton- und Zementwaren aller Art, insbesondere von Platten, und bei der rationellen Herstellung von Formartikeln aus anderen Materialien in weiten Bereichen technischer Tätigkeiten, wie Füll-, Verteil-, Dosierungs- und Verdichtungsvorgängen auf Vibrationsoder Rüttelvorrichtungen einsetzbar sein.Said element is said to be used in the industrial production of all types of concrete and cement products, in particular slabs, and in the rational production of molded articles from other materials in a wide range of technical activities, such as filling, distributing, metering and compacting processes on vibrating or vibrating devices be applicable.

Für die Ausbildung von Vibrationstischen bzw. Formböden sind beispielsweise für die Plattenproduktion im wesentlichen zwei Grundkonstruktionen bekannt, die anhand der Fig. 1 und 1 b, sowie 2a und 2b näher erläutert werden.For the formation of vibration tables or molded floors, for example, essentially two basic constructions are known for plate production, which are explained in more detail with reference to FIGS. 1 and 1b, and 2a and 2b.

Mit der Grundkonstruktion gemäss Fig. 1 aund 1b wird nach dem sogenannten Durchstossverfahren und mit der anderen Grundkonstruktion gemäss Fig. 2a und 2b nach dem sogenannten Hermetikverfahren gearbeitet. Die Fig. 1 und 2a zeigen die Vorrichtungen nach dem Füllen des Formhohlraumes mit Füllgut und die Fig. 1 b und 2b zeigen die Vorrichtungen beim Entformen des zu einer Platte verdichteten Füllgutes.The basic construction according to FIGS. 1 a and 1 b is operated according to the so-called push-through method and the other basic construction according to FIGS. 2 a and 2 b according to the so-called hermetic method. 1 and 2a show the devices after the mold cavity has been filled with filling material and FIGS. 1b and 2b show the devices when demolding the filling material compressed into a plate.

Die Konstruktion gemäss Fig. 1 weist einen normalerweise aus einer massiven Stahlplatte bestehenden Formboden 1 auf, der gemäss Fig. 1a frei auf einem Vibriertisch 2 aufliegt und vom im Abstand über dem Vibriertisch angebrachten Formrahmen 3 gegenüber diesem frei Leweglich umgeben wird. Mit einer nicht dargestellten hubvorrichtung verbundene Stangen 4 erstrecken sich frei durch den Vibriertisch 2 und greifen am Formboden 1 an, um diesen in die gewünschte Höhenlage bezüglich des Formrahmens zu bringen. Mit der Unterseite des Vibriertisches 2 steht eine Vibriervorrichtung 5 im Eingriff, um die gewünschten Vibrationen zu erzeugen, die dann über den Vibriertisch 2 auf den Formboden 1 und damit auf das Füllgut 6 übertragen werden. Auf dem Formboden 1 liegt üblicherweise eine an ihrer dem Füllgut zugekehrten Oberfläche strukturierte Kunststoffmatte 7. Zur Herstellung einer Platte aus Beton wird als Füllgut 6 Beton in dem Formhohlraum gemäss Fig. 1 a eingefüllt, wonach von oben die Presse 8 auf das Füllgut herabgesenkt wird, um auf das gesamte Füllgut den gewünschten Pressdruck auszuüben. Gleichzeitig tritt die Vibriervorrichtung 5 in Tätigkeit. Nach erfolgter Verdichtung wird die Presse abgehoben und zum Entfernen der aus dem Füllgut 6 hergestellten Platte diese qemäss Fig. 1b aus dem Bereich des Formrahmens 3 herausgehoben.The construction according to FIG. 1 has a mold base 1 which normally consists of a solid steel plate, which, according to FIG. 1a, lies freely on a vibrating table 2 and is freely surrounded by the mold frame 3 which is arranged at a distance above the vibrating table. Rods 4 connected to a lifting device, not shown, extend freely through the vibrating table 2 and engage the mold base 1 in order to bring it to the desired height with respect to the mold frame. A vibrating device 5 engages with the underside of the vibrating table 2 in order to generate the desired vibrations, which are then transmitted via the vibrating table 2 to the mold base 1 and thus to the filling material 6. On the mold base 1 there is usually a structured plastic mat 7 on its surface facing the filling material. To produce a concrete plate, concrete is filled as filling material 6 in the mold cavity according to FIG. 1 a, after which the press 8 is lowered onto the filling material from above, in order to exert the desired pressure on the entire filling material. At the same time, the vibrating device 5 comes into operation. After compression has taken place, the press is lifted off and, to remove the plate produced from the filling material 6, it is lifted out of the region of the mold frame 3 according to FIG. 1b.

Die Vorteile der Vorrichtung gemäss Fig. 1 sind:The advantages of the device according to FIG. 1 are:

Die Füllhöhe h für das zu erzeugende Produkt kann durch Einstellen unterschiedlicher Relativlagen des Formbodens 1 bezüglich des Formrahmens 3 variiert werden.The filling height h for the product to be produced can be varied by setting different relative positions of the mold base 1 with respect to the mold frame 3.

Mit den Stangen 4 können Unterschiede in den Füllverhältnissen durch Veränderung der Höhe h in den vier mit Stangen versehen Ecken bewirkt werden.With the rods 4, differences in the filling ratios can be brought about by changing the height h in the four corners provided with rods.

Es können im Verhältnis zur Kantenlänge sehr dünne Bauteile produziert werden, da der fertige Formling auf dem Formboden liegend ausgestossen wird.Very thin components can be produced in relation to the edge length, since the finished molding is ejected lying on the mold base.

Allfällige am Vibrationstisch, z.B. zur Betonverdichtung erzeugte Schwingungen werden direkt ins Material übertragen, ohne Behinderung bzw. Dämpfung durch die Masse irgendwelcher auf dem Vibrationstisch lastenden Maschinenteile, wie Formrahmen.Any on the vibration table, e.g. Vibrations generated for concrete compaction are transferred directly into the material, without hindrance or damping by the mass of any machine parts, such as mold frames, which are loaded on the vibration table.

Die Konstruktion gemäss Fig. 2 weist einen Vibriertisch 2 auf, der gleichzeitig den Formboden bildet. Zu diesem Zweck ist der Vibriertisch 2 mit einer Kunststoffmatte 7 bezogen, die an ihrer Oberseite strukturiert ist und eine hochstehende Umrandung aufweist. Auf der hochstehenden Umrandung liegt gemäss Fig. 2a ein Formrahmen 3 dichtend auf, der mit der Matte den Formhohlraum zur Aufnahme des Füllgutes 6 bildet. Hier wird der Vibriertisch bzw. Formboden direkt mittels einer nicht dargestellten Vibriereinrichtung in Schwingungen versetzt, wobei wie bei der Vorrichtung gemäss Fig. 1 auch wieder eine Presse den gewünschten Pressdruck auf das ganze Füllgut ausübt. Zum Entformen wird hier gemäss Fig. 2b der Formrahmen 3 vom Formboden 2 bzw. der Kunststoffmatte 7 abgehoben, wobei der verdichtete Bauteil beim Abheben im Rahmen 3 eingeklemmt bleibt.2 has a vibrating table 2, which at the same time forms the mold base. For this purpose, the vibrating table 2 is covered with a plastic mat 7, which is structured on its upper side and has a raised edge. According to FIG. 2 a, a molding frame 3 lies sealingly on the upstanding border, which forms the molding cavity with the mat for receiving the filling material 6. Here, the vibrating table or mold base is set in vibration directly by means of a vibrating device (not shown), with a press again exerting the desired pressing pressure on the entire filling material, as in the device according to FIG. 1. 2b, the mold frame 3 is lifted off the mold base 2 or the plastic mat 7 according to FIG. 2b, the compacted component remaining clamped in the frame 3 when it is lifted off.

Die Vorteile der Vorrichtung gemäss Fig. 2 sind:The advantages of the device according to FIG. 2 are:

Die Formhohlräume sind nach unten dicht, was bei Verarbeitung von nassen Materialien positiv sein kann.The mold cavities are tight at the bottom, which can be positive when processing wet materials.

Die Vorrichtung entwickelt relativ wenig Lärm, da eine frei in der Form liegende Stahlplatte entfällt, die durch Rüttelkräfte in Schwingungen versetzt wird.The device generates relatively little noise, since there is no steel plate lying freely in the mold, which is caused to vibrate by vibrating forces.

Die Gummi- oder Kunststoffschichten auf dem Vibrationstisch sind relativ formfest, d.h. sie neigen wegen der Randeinspannung durch den Formrahmen weniger zum Fliessen und/oder Kriechen.The rubber or plastic layers on the vibrating table are relatively dimensionally stable, i.e. they tend less to flow and / or creep due to the edge clamping by the mold frame.

Die beiden dargestellten Grundkonstruktionen weisen somit erwünschte Vorteile auf. Leider sind aber die für die eine Konstruktion angegebenen Vorteile die Nachteile der anderen Konstruktion.The two basic structures shown thus have desirable advantages. Unfortunately, the advantages given for one construction are the disadvantages of the other construction.

Ziel der vorliegenden Erfindung ist, ein Element zur Uebertragung von Vibrationen in einer Vibrations- oder Rüttelvorrichtung zur Bearbeitung verschiedenster Materialien zu schaffen, das eine geringe Lärmabstrahlung hat und das bei der Verwendung als Formboden oder Vibrationstisch zur Herstellung insbesondere von plattenartigen Betonelementen die Schaffung einer Vibrations- oder Rüttelvorrichtung erlaubt, welche die Nutzung oben erwähnter Vorteile der beiden Grundkonstruktionen nach der Fig. 1 und 2 ermöglicht.The aim of the present invention is to provide an element for transmitting vibrations in a vibrating or vibrating device for processing a wide variety of materials, which has a low noise emission and which, when used as a molded floor or vibrating table for the production of, in particular, plate-like concrete elements, creates a vibrating or vibrating device, which allows the use of the above-mentioned advantages of the two basic constructions according to FIGS. 1 and 2.

Dieses Ziel wird mit einem Element gemäss den Ansprüchen 1 und 2 erreicht.This goal is achieved with an element according to claims 1 and 2.

Nachfolgend wird anhand der Zeichnung der Erfindungsgegenstand beispielsweise näher erläutert.The subject matter of the invention is explained in more detail below with reference to the drawing explained.

Es zeigen:Show it:

Fig. 3 einen Querschnitt durch einen Teil eines Formbodens bzw. Vibrationstisches gemäss der Erfindung,3 shows a cross section through part of a mold base or vibration table according to the invention,

Fig. 4a bis 4c verschiedene Ausbildungen des Seitenrandes des Formbodens bzw. Vibrationstisches nach Fig. 3, und4a to 4c different designs of the side edge of the mold base or vibration table according to Fig. 3, and

Fig. 5 und 6 Modifikationen des Formbodens bzw. Vibrationstisches gemäss Fig. 35 and 6 modifications of the mold base or vibrating table according to FIG. 3

Das plattenartige Element gemäss der Fig. 3 weist eine biegesteife bzw. formsteife Tragstruktur in Form eines Stützträgers 10 auf, die rostartig aufgebaut sein kann und als Formboden oder Vibrationstisch eingesetzt werden kann. An ihrer Unterseite ist die Tragstruktur 10 mit einer verschleissfesten Platte 11 kraftschlüssig und auswechselbar verbunden, z.B. verschraubt. An ihrer Oberseite ist die Tragstruktur 10 mit einem perforierten Blech 12 kraftschlüssig, z.B. mittels Schweissverbindung, verbunden. Das Blech 12 weist zwecks Minderung des Lärmes kreisrunde, durchgehende Löcher 13 auf, wobei der Lochanteil mindestens 20 % der Blechfläche betragen sollte.The plate-like element according to FIG. 3 has a rigid or dimensionally stable support structure in the form of a support beam 10, which can have a rust-like structure and can be used as a mold base or a vibrating table. On its underside, the support structure 10 is non-positively and interchangeably connected to a wear-resistant plate 11, e.g. screwed. On its upper side, the support structure 10 is non-positively connected to a perforated sheet 12, e.g. connected by welding. The sheet 12 has circular through holes 13 for the purpose of reducing the noise, the hole proportion being at least 20% of the sheet area.

Die aus Tragstruktur 10 und Lochblech 12 gebildete Einheit ist allseitig mit Ausnahme der Unterseite mit einer gummielastischen und/oder schwingungsdämpfenden Masse 14, die auch die Aussparungen im Innern der Tragstruktur 10 ausfüllt, umhüllt und innig verbunden. Als Masse 14 eignen sich alle Elastomere (auch zellige oder porige) auf der Basis von natürlichem oder synthetischem Kautschuk, Kunstgummi und/oder Kunststoffen (mit oder ohne Füll- oder Armierungsbestandteilen) mit viskoelastischen Eigenschaften, wobei in gewissen Fällen die Federungs- und in anderen Fällen die Dämpfungseigenschaften im Vordergrund stehen. Die Masse 14 wird vorzugsweise im Giessverfahren aufgebracht. Als Masse 14 kommt z.B. Polyäthylen, Giess-Polyurethan, Polyvinilchlorid, Nitrilkautschuk oder auch Polychlorbutadien in Frage.The unit formed from the support structure 10 and perforated plate 12 is covered on all sides with the exception of the underside with a rubber-elastic and / or vibration-damping mass 14, which also fills the cutouts in the interior of the support structure 10, and is intimately connected. All elastomers (including cellular or porous) based on natural or synthetic rubber, synthetic rubber and / or plastics (with or without filler or reinforcing constituents) with viscoelastic properties are suitable as mass 14, with the suspension and in other cases in certain cases Cases where the damping properties are in the foreground. The mass 14 is preferably applied in the casting process. As mass 14 comes e.g. Polyethylene, cast polyurethane, polyvinil chloride, nitrile rubber or polychlorobutadiene in question.

Die Umhüllungsmasse 14 wirkt in hohem Masse schallmindernd und bietet die Möglichkeit eine über dem Lochblech 12 liegende Schicht 15 und eine seitliche Umrandung 16 des Formbodens zu bilden, die beide derart geschaffen werden können, dass sie dem jeweiligen Anwendungszweck gerecht werden.The enveloping mass 14 has a high sound-reducing effect and offers the possibility of forming a layer 15 lying above the perforated plate 12 and a lateral border 16 of the mold base, both of which can be created in such a way that they meet the respective application.

Die aus der Elastomerschicht 15, dem Lochblech 12 und der Tragstruktur 10 gebildete Einheit kann als dreischichtiger Körper betrachtet werden, wobei insbesondere bei geeigneter Wahl der Schichtdickenverhältnisse (Schichtdicke der Elastomerschicht 15, der Lochblechschicht 12 und der Tragstruktur 10) und des Lochanteils im Lochblech die Schallabstrahlung vermindert wird ohne Beeinträchtigung der Vibrationsübertragung durch die drei Schichten hindurch.The unit formed from the elastomer layer 15, the perforated plate 12 and the support structure 10 can be regarded as a three-layer body, the sound radiation in particular if the layer thickness ratios (layer thickness of the elastomer layer 15, the perforated plate layer 12 and the support structure 10) and the proportion of holes in the perforated plate are selected appropriately is reduced through the three layers without impairing the transmission of vibrations.

Das Element gemäss Fig. 3 eignet sich besonders gut zur Verwendung als Formboden oder Vibrationstisch zur Herstellung von Betonelementen, wie Betonplatten, in einer Betonpresse etwa entsprechend denjenigen gemäss den Fig. 1 und 2. Das Element gemäss Fig. 3 ersetzt dabei die Stahlplatte 1 samt Matte 7 resp. den Vibriertisch 2 samt der Kunststoffmatte 7. Die Vibriervorrichtung greift dabei beim Beispiel gemäss Fig. 1 weiterhin am Vibriertisch 2 und beim Beispiel gemäss Fig. 2 nunmehr an der Unterseite der Verschleissplatte+1 an, und der Rahmen 3 wirkt bei beiden Beispielen mit der zu diesem Zweck geeignet gestalteten seitlichen Umrandung 16 zusammen. Die seitliche Umrandung 16 kann dabei als Abdichtung zwischen Formboden und Formrahmen 3 bei auftretendem Innendruck, herrührend von der von oben auf das Füllgut wirkenden Presskraft, im Sinne einer Lippenmanschette oder Dichtungspackung, wie gemäss der Fig. 4a bis 4c, gestaltet werden.The element according to FIG. 3 is particularly suitable for use as a molded floor or vibrating table for the production of concrete elements, such as concrete slabs, in a concrete press roughly corresponding to those according to FIGS. 1 and 2. The element according to FIG. 3 replaces the steel plate 1 together with it Mat 7 resp. the vibrating table 2 together with the plastic mat 7. The vibrating device in the example according to FIG. 1 continues to act on the vibrating table 2 and in the example according to FIG. 2 now on the underside of the wear plate + 1, and the frame 3 acts in both examples with the suitably designed side border 16 together for this purpose. The lateral border 16 can be designed as a seal between the mold base and the mold frame 3 when internal pressure occurs, originating from the pressing force acting on the filling material from above, in the sense of a lip sleeve or sealing packing, as shown in FIGS. 4a to 4c.

Die Oberseite der Oberschicht 15 aus Elastomer, welche direkt mit dem zu einem Formstück zu verarbeitenden Füllgut in Berührung steht, ist vorzugsweise strukturiert, um dem herzustellenden Stück die gewünschte Oberflächenstruktur zu geben.The upper side of the top layer 15 made of elastomer, which is in direct contact with the filling material to be processed into a shaped piece, is preferably structured in order to give the piece to be manufactured the desired surface structure.

Bei der Verwendung des Elementes gemäss Fig. 3 in einer Presse zur Herstellung von Formstücken bei welchen relativ hohe Verdichtungsdrücke auf das über dem als Formboden bzw. Vibrationstisch dienenden Element befindliche Füllmaterial ausgeübt werden, wirken die Elastomerschicht 15 und das Lochblech 12 in höchst vorteilhefter Weise zusammen, um nach dem Pressvorgang den Trenneffekt zwischen Oberseite des Formbodens und dem verpressten bzw. verdichteten Formstück, z.B. aus Beton, zu unterstützen. Hierzu soll die über dem Lochblech 12 liegende Elastomerschicht 15 gute Federungseigenschaften haben. Während des Pressvorganges ist die Einfederung der Elastomerschicht 15 an den Stellen über den Löchern 13 des Lochbleches 12 grösser als über den Stellen, wo das Blech 12 nicht gelocht ist und somit die Elastomerschicht 15 unterstützt ist. Nach dem Pressvorgang, d.h. bei Entlastung des Füllgutes vom Pressdruck, federt die Elastomerschicht 15 entsprechend dem vorangegangenen unterschiedlichen Einfederungen auch wieder unterschiedlich stark in ihre Ausgangslage zurück. Dabei löst sich das aus dem Füllmaterial verpresste bzw. verdichtete Formstück, z.B. eine Betonplatte, teilweise von der Elastomerschicht, was den Trenneffekt unterstützt. Die Löcher 13 der durch das Lochblech 12 gebildeten Schicht können dabei mit Luft oder einem anderen Gas oder aber mit der Kunststoffmasse 14 völlig gefüllt sein.When the element according to FIG. 3 is used in a press for the production of moldings in which relatively high compression pressures are exerted on the filling material located above the element serving as the mold base or vibrating table, the elastomer layer 15 and the perforated plate 12 interact in a highly advantageous manner in order to remove the separating effect between the upper side of the mold base and the compressed or compacted molding, eg made of concrete. For this purpose, the elastomer layer 15 lying above the perforated plate 12 should have good suspension properties. During the pressing process, the deflection of the elastomer layer 15 is greater at the points above the holes 13 of the perforated plate 12 than above the points where the plate 12 is not perforated and thus the elastomer layer 15 is supported. After the pressing process, i.e. when the filling material is relieved of the pressing pressure, the elastomer layer 15 also springs back to its initial position to different extents in accordance with the previous different deflections. The molded part compressed or compressed from the filling material, e.g. a concrete slab, partly from the elastomer layer, which supports the separation effect. The holes 13 of the layer formed by the perforated plate 12 can be completely filled with air or another gas or with the plastic compound 14.

Zur optimalen Gestaltung des Trenneffektes können die Schichtdickenverhältnisse von Elastomerschicht 15 und Lochblech 12 auf das jeweilige Füllgut/Pressgut und auf die einzuhaltenden Pressdrücke abgestimmt werden. Die Rückfederungsunterschiede, und damit der Trenneffekt, sind am grössten resp. besten bei dünner Schicht 15 und relativ dickem Lochblech 12. Es ist auch auf die Zusammensetzung des Pressgutes Rücksicht zu nehmen. Ist dieses z.B. grobkörnig, so wird mit eher dicken Schichten 12 und 15 und mit grob-perforiertem Lochblmch ein optimaler Trenneffekt herbeigefuhrt werden können.For optimal design of the separation effect, the layer thickness ratios of elastomer layer 15 and perforated plate 12 can be matched to the respective filling material / pressed material and to the pressing pressures to be maintained. The springback differences, and thus the separation effect, are greatest, respectively. best with thin layer 15 and relatively thick perforated plate 12. It is also due to the composition of the Consider good press. If this is, for example, coarse-grained, an optimal separation effect can be achieved with rather thick layers 12 and 15 and with coarse-perforated perforated holes.

Es können dem jeweiligen Zweck entsprechend an den verschiedenen Stellen des Elementes gemäss Fig.3 Massen 14 verschiedener Eigenschaften eingesetzt sein. So kann es erwünscht sein, dass bei der die Oberschicht 15 bildenden Masse die Federungseigenschaften und bei der das Innere der Tragstrüktur 10 ausfüllenden Masse die Schwingungsdämpfungseigensdhaften im Vordergrund stehen sollen.According to the respective purpose, masses 14 of different properties can be used at the different locations of the element according to FIG. Thus, it may be desirable for the mass forming the upper layer 15 to focus on the suspension properties and for the mass filling the interior of the supporting structure 10 the vibration damping properties should be in the foreground.

Anstelle der Tragstruktur in form des Stützträgers 10 aus Stahl und des Lochbleches 12 könnte auch gemäss Fig. 5 ein plattenförmiger, biegesteifer oder formsteifer Gusskörper 17 aus Gusaeisen oder Stahlguss verwendet werden, dessen eine Aussenschicht 18 mit nach aussen offenen, z.B. kreisrunden Ausnehmungen 13 versehen ist, welche Aussenschicht 18 dabei die Funktion des Lochbleches 12 mit einem entsprechenden Lochanteil übernimmt.Instead of the supporting structure in the form of the support beam 10 made of steel and the perforated plate 12, a plate-shaped, rigid or dimensionally stable cast body 17 made of cast iron or cast steel could also be used, as shown in FIG. 5, the outer layer 18 of which has an outer layer 18 which is open to the outside, e.g. circular recesses 13 is provided, which outer layer 18 takes over the function of the perforated plate 12 with a corresponding proportion of holes.

Wie beim Element gemäss der Fig. 3 wird ein solcher Gusskörper, der auch im Innern bzw. an seiner Unterseite mit Aussparungen versehen werden kann, mit einer Masse 14 umhüllt und innig verbunden, so dass eine über den rasterartigen Ausnehmungen der Aussenschicht befindliche Oberschicht und eine Umrandung aus der Masse 14 gebildet wird.As with the element according to FIG. 3, such a cast body, which can also be provided with recesses on the inside or on its underside, is encased and intimately connected with a mass 14, so that an upper layer located above the grid-like recesses in the outer layer and one Border is formed from the mass 14.

Bei der Modifikation des erfindungsgemässen Elementes gemäss der Fig. 6 ist auch die Unterseite der Tragstruktur 10 mit einem perforierten Blech 12 kraftschlüssig, z.B. mittels Schweissverbindung, verbunden und mit einer Schicht 15 aus der Masse 14 überdeckt und innig verbunden.In the modification of the element according to the invention according to FIG. 6, the underside of the support structure 10 is also non-positive with a perforated sheet 12, e.g. by means of a welded joint, connected and covered with a layer 15 from the mass 14 and intimately connected.

Sowohl das untere Lochblech 12, als auch die Schicht 15 können in einem Bereich 18 , der in geeigneter Weise ausgestaltet werden kann, um mit einer Vibriervorrichtung in Eingriff zu kommen, ausgenommen werden.Both the lower perforated plate 12 and the layer 15 can be excluded in an area 18 which can be configured in a suitable manner in order to come into engagement with a vibrating device.

Auch das Element gemäss der Fig. 5 könnte in der unteren Aussenschicht des Gusskörpers 17 Ausnehmungen 13 und eine diese Aussenschicht überdeckende weitere Schicht aus der Masse 14 aufweisen und dabei an der Unterseite entsprechend dem Element gemäss der Fig. 6 ausgebildet sein. Das Lochblech 12 ist vorzugsweise aus Metall, wie Stahl. Es kann aber auch aus einem geeigneten Kunststoff sein, der im vorliegenden Zusammenhang die gleiche oder eine ähnliche Wirkung wie ein Metall hat und deshalb als Werkstoff für das Lochblech 12 auch geeignet ist.The element according to FIG. 5 could also have recesses 13 in the lower outer layer of the cast body 17 and a further layer made of the mass 14 covering this outer layer and thereby be formed on the underside corresponding to the element according to FIG. 6. The perforated plate 12 is preferably made of metal, such as steel. However, it can also be made of a suitable plastic, which in the present context has the same or a similar effect as a metal and is therefore also suitable as a material for the perforated plate 12.

Der beschriebend-tnd als plattenartiger Verbundkörper ausgebildete Formboden bzw. Vibrationstisch hat die Vorteile

  • - der vielfältigsten Anwendungsmöglichkeiten
  • - geringster Lärmabstrahlung
  • - mindestens ebenso guter Uebertragung der für beispielsweise Betonverdichtung erheblichen Vibrationsenergie auf der ganzen Fläche, wie wenn eine massive Stahlplatte Verwendung fände
  • - guter Abdichtung flächig und stirnseitig
  • - guter Trennfähigkeit Formstück/Formboden
  • - hoher Verschleissresistenz
  • - günstiger Kosten/Nutzungsverhältnisse, demnach hoher Wirtschaftlichkeit
The descriptive and formed as a plate-like composite body or vibration table has the advantages
  • - the most diverse application possibilities
  • - lowest noise emission
  • - At least as good transmission of the vibration energy, which is considerable for concrete compaction, for example, over the entire surface, as if a massive steel plate were used
  • - good sealing flat and on the face
  • - good separability of molded part / molded base
  • - high wear resistance
  • - Favorable costs / conditions of use, therefore high economic efficiency

Claims (14)

1. Element for the transmittal of vibrations in a vibrating or jarring apparatus, characterized in that the element is a laminated body, whereby one layer is structured as a supporting carrier (10) resistant to bending and at least one second layer as perforated sheet (12) mounted force-locked to one outer surface of the supporting carrier, and in that a further layer (T5) of a material (14) having rubber elastic and/or vibration absorbing properties is applied to at least the outer surface of the sheet.
2. Element for the transmittal of vibrations in a vibrating or jarring apparatus, characterized in that the element comprises a supporting carrier resistant to bending, preferably of a cast piece (17), and in that recesses (13) are worked in at least in its one outer layer (18), and in that a further layer (15) of a material (14) having rubber elastic and/or vibration absorbing properties is applied to at least the outer surface of said outer layer (18) of the supporting carrier.
3. Element according to claim 1 or 2, characterized in that the material (14) having rubber elastic and/or vibration absorbing properties is an elastomer on the basis of natural caoutchouc, synthetic caoutchouc and/or plastic materials.
4. Element according to claim 1 or 2, characterized in that the body of the supporting carrier (10) comprises recesses, specifically is perforated, and especially in a way selected in consideration of material and dimensions relative to the hole diameter and distances of the holes with the purpose of a minimal sound radiation due to flexural waves.
5. Element according to claim 1 or 2, characterized in that the supporting carrier (10) is of a grate-like construction.
6. Element according to one of the claims 1 to 5, characterized in that the unit made up of supporting carrier (10) and perforated sheet (12) or supporting carrier with perforated outer layer (18), respectively, is embedded all-around with exclusion of at least one part of the bottom surface in said material having rubber elastic and/or vibration absorbing properties.
7. Element according to claim 6, characterized in that the edge area of said material (14) enclosing the unit is formed as seal, for instance, as lip profile or in form of one or several circulating grooves.
8. Element according to claim 1 or 2, characterized in that the perforated sheet (12) or the outer layer (18) including recesses (13), respectively, of the supporting carrier comprise a at least 20% share holes or recesses, respectively.
9. Element according to claim 1 or 2, characterized in that the layer of said material (14) applied on the perforated sheet (12) or outer layer including recesses, respectively, of the supporting carrier possesses a Shore A hardness of 50° to 90°.
10. Element according to claim 1 or 2 for use as mold bottom or vibrating table for the production of formed bodies of a material comprising granular aggregates and binder, specifically of concrete, in a press, characterized in that the layer (15) of said material (14) applied onto the outer surface of the perforated sheet (12) or the outer surface (18) incorporating recesses (13), respectively, of the supporting carrier serves as base support or bottom die, respectively, for the formed body to be produced.
11. Element according to claim 10, characterized in that the base support for the formed body to be produced is structured at the outer surface facing the formed body.
12. Element according to claim 10 or 11, characterized in that the holes (13) of the sheet (12) or recesses (13) of the outer surface (10), respectively, of the supporting carrier comprise air or gas.
13. Element according to claim 1 or 2, characterized in that an exchangeable wear plate (11) is mounted to the outer surface of the element facing away from the perforated sheet (12) or said outer layer (18), respectively.
14. Element according to one of the preceding claims, characterized in that there is applied a perforated sheet mounted force-locked to the supporting carrier also at opposite outer surface of the supporting carrier or recesses (13) are worked in the opposite outer layer (18) of the supporting carrier, respectively, too, and in that a layer (15) of said material (14) having rubber elastic and/or vibration absorbing properties is applied on the outer surface of said sheet (12) or outer surface of said outer layer (18), respectively, and covering such outer surface at least partially.
EP83101698A 1983-02-22 1983-02-22 Vibration transmission member Expired EP0117877B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP83101698A EP0117877B1 (en) 1983-02-22 1983-02-22 Vibration transmission member
AT83101698T ATE19485T1 (en) 1983-02-22 1983-02-22 ELEMENT FOR TRANSMITTING VIBRATIONS.
DE8383101698T DE3363246D1 (en) 1983-02-22 1983-02-22 Vibration transmission member

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP83101698A EP0117877B1 (en) 1983-02-22 1983-02-22 Vibration transmission member

Publications (2)

Publication Number Publication Date
EP0117877A1 EP0117877A1 (en) 1984-09-12
EP0117877B1 true EP0117877B1 (en) 1986-04-30

Family

ID=8190308

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83101698A Expired EP0117877B1 (en) 1983-02-22 1983-02-22 Vibration transmission member

Country Status (3)

Country Link
EP (1) EP0117877B1 (en)
AT (1) ATE19485T1 (en)
DE (1) DE3363246D1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0651692A4 (en) * 1993-03-31 1996-02-28 Perval Pty Ltd Settable material mould.
NL1002858C2 (en) * 1996-04-12 1997-10-15 Boer Beton Den Moulding equipment, particularly for tiles
DE19631516A1 (en) * 1996-08-03 1998-02-05 Wacker Werke Kg Device for receiving formwork elements for components made of concrete in the manufacture of the components

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE429228A (en) *
BE563415A (en) *
DE870609C (en) * 1951-04-19 1953-03-16 Licentia Gmbh Swing table with sound-absorbing covering
DE887622C (en) * 1951-08-17 1953-08-24 Fornaci Riunite S P A Method and device for molding ceramic objects
BE555068A (en) * 1956-02-18
FR1586203A (en) * 1968-09-12 1970-02-13
FR2071454A5 (en) * 1969-12-30 1971-09-17 Joos Pierre Vibrated concrete moulds - lined with resiliennt (silicone rubber) - sheeting giving a smooth surface finish
DE2152423A1 (en) * 1971-10-21 1973-06-07 Schuette Holzwerke Ag Lanz MODEL TO BE USED IN THE PRODUCTION OF STRUCTURED WALL SURFACES
DE2163945A1 (en) * 1971-12-22 1973-06-28 Ebo Elemente Bau Gmbh U Co Kg HARD-ELASTIC SEALING AND EDGE SHAPED PROFILE FOR CONCRETE FORMWORK
DE2257254C2 (en) * 1972-11-22 1975-10-16 Fritz 8000 Muenchen Pietrowiak Formwork sheet made of steel for the production of precast concrete parts
US4037816A (en) * 1976-04-23 1977-07-26 Scott Samuel C Apparatus for forming a liner on a planar form means

Also Published As

Publication number Publication date
DE3363246D1 (en) 1986-06-05
ATE19485T1 (en) 1986-05-15
EP0117877A1 (en) 1984-09-12

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