EP0734786A1 - Vibration device for a vibrating table of a moulding machine - Google Patents

Vibration device for a vibrating table of a moulding machine Download PDF

Info

Publication number
EP0734786A1
EP0734786A1 EP96104954A EP96104954A EP0734786A1 EP 0734786 A1 EP0734786 A1 EP 0734786A1 EP 96104954 A EP96104954 A EP 96104954A EP 96104954 A EP96104954 A EP 96104954A EP 0734786 A1 EP0734786 A1 EP 0734786A1
Authority
EP
European Patent Office
Prior art keywords
vibrating
shafts
motors
shaft
drive
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP96104954A
Other languages
German (de)
French (fr)
Inventor
Berthold Will
Rainer Geiss
Rüdiger Herr
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.)
Zenith-Maschinenfabrik GmbH
Original Assignee
Zenith-Maschinenfabrik GmbH
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 Zenith-Maschinenfabrik GmbH filed Critical Zenith-Maschinenfabrik GmbH
Publication of EP0734786A1 publication Critical patent/EP0734786A1/en
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B1/00—Producing shaped prefabricated articles from the material
    • B28B1/08—Producing shaped prefabricated articles from the material by vibrating or jolting
    • B28B1/087—Producing shaped prefabricated articles from the material by vibrating or jolting by means acting on the mould ; Fixation thereof to the mould
    • B28B1/0873—Producing shaped prefabricated articles from the material by vibrating or jolting by means acting on the mould ; Fixation thereof to the mould the mould being placed on vibrating or jolting supports, e.g. moulding tables
    • 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
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/10—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of mechanical energy
    • B06B1/16—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of mechanical energy operating with systems involving rotary unbalanced masses
    • B06B1/161—Adjustable systems, i.e. where amplitude or direction of frequency of vibration can be varied
    • B06B1/166—Where the phase-angle of masses mounted on counter-rotating shafts can be varied, e.g. variation of the vibration phase

Definitions

  • the invention relates to a vibrating device for the vibrating table of a stone molding machine with an unbalance vibrating drive, which is designed as a directional oscillator with paired, parallel and counter-rotating circular oscillators, which have a vibrating shaft with at least one unbalance body, and with a controller for changing the vibrating frequency by a Change of the vibrating shaft speed and to change the vibrating force and the vibrating amplitude by adjusting the phase position of at least two unbalanced bodies relative to one another by briefly changing the speed of at least one of the two vibrating shafts assigned to one another.
  • the vibrating shafts are driven via cardan shafts.
  • the eccentrically rotating cardan shafts are possibly subject to a high load due to the centrifugal forces and vibrations that occur, which in continuous operation can lead to a break in the joints connecting the part shafts of the cardan shafts and the part shafts themselves, so that the service life of the cardan shafts is relatively short.
  • DE 43 17 351 A1 describes a further generic vibrating device with two parallel vibrating shafts accommodated in a vibrating head, each with an imbalance body.
  • the vibrating shafts led out of the vibrating head are each driven by a cardan shaft, a toothed belt drive and an electric motor.
  • On the ends of the two cardan shafts there is a pulse generator, which signals the rotational position of the shaft via a signal line control electronics report as soon as the control electronics queries the rotary positions.
  • the signals from the pulse generators are processed in the control electronics for a phase shift of the drive motors, in such a way that the vibrating force or the vibrating amplitude generated by the unbalance bodies can be regulated continuously from the value 0 to the maximum that can be achieved.
  • toothed belt drives advantageously work without slippage, so that a rotational position of the respective vibrating shaft can be queried via the control electronics and, depending on the query, control of the driving electric motor can be carried out.
  • Toothed belts have relatively large deposition areas for dirt such as concrete grains falling out of the stone molds, so that the toothed belts can jump or tear on the gearwheels during operation. This leads to the fact that the phase shift of the rotating unbalance bodies, which is predetermined by the control electronics, is not set correctly and accordingly a proper functioning of the vibrating device is not guaranteed.
  • the invention has for its object to improve the drive of the generic vibrator with regard to longer operating times and the saving of repair and maintenance costs.
  • the V-belt drive used in the vibrating devices according to the invention can compensate for the vibrations transmitted by the vibrating table due to a certain elasticity of the V-belts.
  • the properties of the V-belt drive described above generally guarantee significantly longer operating times compared to the cardan shaft drive.
  • the V-belt does not offer any storage areas for dirt, such as concrete grains from the production of concrete blocks, while the toothed belts that are frequently used in vibrating drives of stone molding machines can accumulate on the tooth flanks and on the tooth root of the dirt, which can cause them to expand and become loose can cause the timing belts to crack.
  • the vibrating unit 2 of a first embodiment of the vibrating device according to FIG. parallel vibrating shafts R1 - R4, on each of which an unbalance body U1 - U4 is attached.
  • the vibrating shafts R1, R3 and R2, R4 of the two pairs of vibrating shafts are each connected by a gear mechanism 3 for synchronous operation.
  • the two counter-rotating exciters 4, 5 formed in this way are equipped with electric drive motors M1, M2, each of which drives two horizontal vibrating shafts R1, R3 and R2, R4 via V-belts 6 and two pulleys 7 on the motor shaft 8 and the vibrating shafts R1, R2.
  • the two motors M1, M2 rotate continuously at a predetermined speed, the individual vibrating shafts R1 - R4 rotating in opposite directions to one another.
  • the unbalance bodies U1 - U4 attached to the vibrating shafts R1 - R4 are positioned so that the centrifugal forces cancel each other and no vibrating force acts on the vibrating table.
  • an adjustment of the phase or angular position of the unbalance bodies U1, U3 to the unbalance bodies U2, U4 is necessary to a value that corresponds to the desired vibrating force acting on the vibrating table 1 with a certain vibrating amplitude.
  • the effect of the vertically directed vibrations of the Vibrating table 1 is achieved in that the horizontal components of the centrifugal forces generated by the unbalance bodies U1, U3 and U2, U4 of the circular oscillators of the two counter-rotating exciters 4, 5 cancel each other out at all times, while the vertically directed centrifugal force components add up.
  • the motor controller 9 for the vibrating unit 2 has sensors 10 arranged in the area of the vibrating shafts R1, R2 and designed as pulse generators for detecting the phase position of the unbalance bodies U1, U2 of the respective unbalanced bodies U1, U3 and U2, U4 of the two counter-rotating exciters 4, 5 as well as the speed of the vibrating shafts R1, R3 and R2, R4, control units 11 for the two motors M1, M2, resolvers coupled to the motors M1, M2 for the continuous acquisition of the data of the motor shaft 8, a computer 12 and a slip controller 13, which the stored, product-specific target data transmitted by the computer 12 for the vibrating frequency and the vibrating amplitude as well as the actual data transmitted by the sensors 10 of the phase position of the unbalance body pairs U1, U3 and U2, U4 and the speeds of the vibrating shafts R1, R3 and R2, R4 are processed and accordingly controls the speed of the motors M1, M2 via their control units 11.
  • the arrangement of the sensors 10 in the region of the rotating unbalance bodies U1, U2 or the vibrating shafts R1, R2 ensures that the slip occurring in the V-belt drive 6, 7 of the vibrating shafts R1, R2 via the slip controller 13 into the speed control of the motors M1, M2 is received.
  • the speed of the vibrating shafts R1-R4 and the change of the phase position of the unbalance body pairs U1, U3 and U2, U4 relative to one another for adjusting the vibrating force or the vibrating amplitude is the speed of at least one of the two for changing the vibrating frequency Motors M1, M2 changeable.
  • FIG. 2 illustrates the installation of two identical vibrating units 2, which work in terms of open and closed-loop control technology, under the two table halves 1a, 1b of a divided vibrating table 1.
  • the divided table offers the possibility of vibrating the table halves 1a, 1b synchronously or by one opposite swing to create a rocking motion of the table halves.
  • the two pairs of vibrating shafts R1, R3 and R2, R4 can be driven with the motor M1 or M2 and two or three V-belts 6 each.
  • the vibrating units 14 according to FIG. 3 installed under the vibrating table halves 1a, 1b of a divided vibrating table 1 differ from the vibrating units 2 according to FIGS. 1 and 2 in that the coupling of the vibrating shafts R1, R3 and R2, R4 by a transmission is omitted and that the four vibrating shafts R1 - R4 are each driven by their own motor M1 - M4 and a V-belt drive 6, 7.
  • This type of drive of the vibrating unit 14 offers the possibility, besides changing the vibrating frequency and the vibrating force or the vibrating amplitude, between the value 0 and a maximum value before and during the vibrating process, to change the direction of the vibrating from a horizontal transverse vibrating to a vertical vibrating and vice versa .
  • FIG. 4 illustrates a divided vibrating table 1 with two vibrating units 15 installed under the table halves 1a, 1b, each of which has two counter-rotating exciters 4, 5 arranged horizontally next to one another, which are formed by the vibrating shaft pairs R1, R3 and R 2, R4 arranged next to one another.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)

Abstract

The shaking device has 2 pairs of shaking shafts (R1,..R4) positioned one above the other beneath a shaking table (1), each shaft carrying an eccentric weight (U1,...U4). The shaking shaft pairs are rotated in opposition to one another by a cogwheel drive (3), with one shaft of each pair driven by an electric motor (M1,M2) via a belt drive (6,7). The electric motors are rotated in opposite directions at a given revs, for compensation of the centrifugal forces, with a control (9) incorporating a slip regulator (13) adjusting the relative positions of the eccentric weights to determine the shaking force.

Description

Die Erfindung betrifft eine Rüttelvorrichtung für den Rütteltisch einer Steinformmaschine mit einem Unwuchtrüttelantrieb, der als Richtschwinger mit paarweise einander zugeordneten, parallel verlaufenden und gegenläufig angetriebenen Kreisschwingern ausgebildet ist, die eine Rüttelwelle mit mindestens einem Unwuchtkörper aufweisen, sowie mit einer Steuerung zur Veränderung der Rüttelfrequenz durch eine Änderung der Rüttelwellendrehzahl und zur Veränderung der Rüttelkraft und der Rüttelamplitude durch eine Verstellung der Phasenlage von mindestens zwei Unwuchtkörpern zueinander durch eine kurzzeitige Änderung der Drehzahl zumindest der einen der beiden einander zugeordneten Rüttelwellen.The invention relates to a vibrating device for the vibrating table of a stone molding machine with an unbalance vibrating drive, which is designed as a directional oscillator with paired, parallel and counter-rotating circular oscillators, which have a vibrating shaft with at least one unbalance body, and with a controller for changing the vibrating frequency by a Change of the vibrating shaft speed and to change the vibrating force and the vibrating amplitude by adjusting the phase position of at least two unbalanced bodies relative to one another by briefly changing the speed of at least one of the two vibrating shafts assigned to one another.

Bei einer aus der DE 41 16 647 C1 bekannten Rüttelvorrichtung dieser Gattung werden die Rüttelwellen über Gelenkwellen angetrieben. Die exzentrisch umlaufenden Gelenkwellen unterliegen möglicherweise einer hohen Belastung durch die auftretenden Fliehkräfte und Schwingungen, die im Dauerbetrieb zu einem Bruch der die Teilwellen der Gelenkwellen miteinander verbindenden Gelenke und der Teilwellen selbst führen können, so daß die Standzeiten der Gelenkwellen verhältnismäßig kurz sind.In a vibrating device of this type known from DE 41 16 647 C1, the vibrating shafts are driven via cardan shafts. The eccentrically rotating cardan shafts are possibly subject to a high load due to the centrifugal forces and vibrations that occur, which in continuous operation can lead to a break in the joints connecting the part shafts of the cardan shafts and the part shafts themselves, so that the service life of the cardan shafts is relatively short.

Die DE 43 17 351 A1 beschreibt eine weitere gattungsgemäße Rüttelvorrichtung mit zwei parallelen, in einem Rüttelkopf untergebrachten Rüttelwellen mit je einem Unwuchtkörper. Die aus dem Rüttelkopf herausgeführten Rüttelwellen werden jeweils durch eine Gelenkwelle, einen Zahnriementrieb und einen Elektromotor angetrieben. Auf den Enden der beiden Gelenkwellen sitzt jeweils ein Impulsgeber, der die Drehstellung der Welle über eine Signalleitung an eine Steuerelektronik meldet, sobald die Steuerelektronik die Drehstellungen abfragt. Die Signale der Impulsgeber werden in der Steuerelektronik zu einer Phasenverschiebung der Antriebsmotoren verarbeitet, und zwar derart, daß sich die Rüttelkraft bzw. die Rüttelamplitude, die von den Unwuchtkörpern erzeugt wird, von dem Wert 0 bis zum erreichbaren Maximum stufenlos regeln läßt.DE 43 17 351 A1 describes a further generic vibrating device with two parallel vibrating shafts accommodated in a vibrating head, each with an imbalance body. The vibrating shafts led out of the vibrating head are each driven by a cardan shaft, a toothed belt drive and an electric motor. On the ends of the two cardan shafts there is a pulse generator, which signals the rotational position of the shaft via a signal line control electronics report as soon as the control electronics queries the rotary positions. The signals from the pulse generators are processed in the control electronics for a phase shift of the drive motors, in such a way that the vibrating force or the vibrating amplitude generated by the unbalance bodies can be regulated continuously from the value 0 to the maximum that can be achieved.

Gemäß den Ausführungen in der DE 43 17 351 A1 arbeiten Zahnriementriebe in vorteilhafter Weise schlupflos, so daß über die Regelelektronik eine Drehstellung der jeweiligen Rüttelwelle abgefragt werden kann und, in Abhängigkeit von der Abfrage, eine Steuerung des antreibenden Elektromotors vornehmbar ist.According to the explanations in DE 43 17 351 A1, toothed belt drives advantageously work without slippage, so that a rotational position of the respective vibrating shaft can be queried via the control electronics and, depending on the query, control of the driving electric motor can be carried out.

Zahnriemen weisen verhältnismäßig große Ablagerungsflächen für Verschmutzungen wie aus den Steinformen herausfallende Betonkörner auf, so daß die Zahnriemen im Betrieb auf den Zahnrädern überspringen bzw. reißen können. Dies führt dazu, daß die von der Regelelektronik vorgegebene Phasenverschiebung der umlaufenden Unwuchtkörper nicht richtig eingestellt wird und dementsprechend eine ordnungsgemäße Funktionsweise der Rüttelvorrichtung nicht gewährleistet ist.Toothed belts have relatively large deposition areas for dirt such as concrete grains falling out of the stone molds, so that the toothed belts can jump or tear on the gearwheels during operation. This leads to the fact that the phase shift of the rotating unbalance bodies, which is predetermined by the control electronics, is not set correctly and accordingly a proper functioning of the vibrating device is not guaranteed.

Der Erfindung liegt die Aufgabe zugrunde, den Antrieb der gattungsgemäßen Rüttelvorrichtung im Hinblick auf längere Betriebslaufzeiten und die Einsparung von Reparatur- und Wartungskosten zu verbessern.The invention has for its object to improve the drive of the generic vibrator with regard to longer operating times and the saving of repair and maintenance costs.

Diese Aufgabe ist erfindungsgemäß gelöst durch die beiden Rüttelvorrichtungen gemäß Patentanspruch 1 und Patentanspruch 2.This object is achieved according to the invention by the two vibrating devices according to patent claim 1 and patent claim 2.

Die Unteransprüche beinhalten vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung.The subclaims contain advantageous refinements and developments of the invention.

Der bei den erfindungsgemäßen Rüttelvorrichtungen eingesetzte Keilriemenantrieb kann aufgrund einer gewissen Elastizität der Keilriemen die durch den Rütteltisch übertragenen Schwingungen kompensieren. Die vorbeschriebenen Eigenschaften des Keilriemenantriebs gewährleisten in der Regel gegenüber dem Gelenkwellenantrieb wesentlich längere Betriebslaufzeiten. Schließlich bietet der Keilriemen aufgrund seiner Form keinerlei Ablagerflächen für Verschmutzungen wie von der Herstellung von Betonsteinen stammende Betonkörner, während sich an den Zahnflanken und am Zahnfuß der Zähne der bei Rüttelantrieben von Steinformmaschinen häufig eingesetzten Zahnriemen Verschmutzungen ablagern und festsetzen können, die ein Aufweiten und ein dadurch bedingtes Reißen der Zahnriemen bewirken können.The V-belt drive used in the vibrating devices according to the invention can compensate for the vibrations transmitted by the vibrating table due to a certain elasticity of the V-belts. The properties of the V-belt drive described above generally guarantee significantly longer operating times compared to the cardan shaft drive. Finally, due to its shape, the V-belt does not offer any storage areas for dirt, such as concrete grains from the production of concrete blocks, while the toothed belts that are frequently used in vibrating drives of stone molding machines can accumulate on the tooth flanks and on the tooth root of the dirt, which can cause them to expand and become loose can cause the timing belts to crack.

Die Erfindung ist nachstehend anhand von schematischen Zeichnungen von Ausführungsbeispielen von Rüttelvorrichtungen erläutert. Es zeigt

Fig. 1
eine erste Ausführungsform einer Rüttelvorrichtung mit dem Blockschaltbild der Steuerung für die Antriebsmotoren,
Fig. 2
einen geteilten Rütteltisch mit zwei Rütteleinheiten der Rüttelvorrichtung nach Fig. 1,
Fig. 3
eine zweite Rüttelvorrichtung mit je einer Rütteleinheit in einem geteilten Rütteltisch mit gesondertem Antrieb für jeden Unwuchtkörper und
Fig. 4
eine dritte Ausführungsform einer Rüttelvorrichtung mit zwei Rütteleinheiten in einem geteilten Rütteltisch.
The invention is explained below with the aid of schematic drawings of exemplary embodiments of vibrating devices. It shows
Fig. 1
1 shows a first embodiment of a vibrating device with the block diagram of the control for the drive motors,
Fig. 2
2 shows a divided vibrating table with two vibrating units of the vibrating device according to FIG. 1,
Fig. 3
a second vibrating device, each with a vibrating unit in a divided vibrating table with a separate drive for each imbalance body and
Fig. 4
a third embodiment of a vibrating device with two vibrating units in a divided vibrating table.

Die unter dem Rütteltisch 1 einer Steinformmaschine eingebaute, als Richtschwinger ausgebildete Rütteleinheit 2 einer ersten Ausführungsform der Rüttelvorrichtung gemäß Fig. 1 weist vier paarweise vertikal übereinander angeordnete, parallele Rüttelwellen R1 - R4 auf, auf denen jeweils ein Unwuchtkörper U1 - U4 befestigt ist. Die Rüttelwellen R1, R3 und R2, R4 der beiden Rüttelwellenpaare sind jeweils durch ein Zahnradgetriebe 3 für einen Synchronlauf miteinander verbunden. Die beiden derart gebildeten Gegenlauferreger 4, 5 sind mit elektrischen Antriebsmotoren M1, M2 ausgestattet, die über Keilriemen 6 und zwei Riemenscheiben 7 auf der Motorwelle 8 und den Rüttelwellen R1, R2 jeweils zwei horizontale Rüttelwellen R1, R3 und R2, R4 antreiben.The vibrating unit 2 of a first embodiment of the vibrating device according to FIG. parallel vibrating shafts R1 - R4, on each of which an unbalance body U1 - U4 is attached. The vibrating shafts R1, R3 and R2, R4 of the two pairs of vibrating shafts are each connected by a gear mechanism 3 for synchronous operation. The two counter-rotating exciters 4, 5 formed in this way are equipped with electric drive motors M1, M2, each of which drives two horizontal vibrating shafts R1, R3 and R2, R4 via V-belts 6 and two pulleys 7 on the motor shaft 8 and the vibrating shafts R1, R2.

Die beiden Motoren M1, M2 drehen ständig mit vorgegebener Drehzahl im Gleichlauf, wobei sich die einzelnen Rüttelwellen R1 - R4 zueinander gegenläufig drehen. Die auf den Rüttelwellen R1 - R4 befestigten Unwuchtkörper U1 - U4 stehen so zueinander, daß sich die Zentrifugalkräfte gegenseitig aufheben und keine Rüttelkraft auf den Rütteltisch wirkt. Für den Rüttelvorgang ist eine Verstellung der Phasen- bzw. Winkellage der Unwuchtkörper U1, U3 zu den Unwuchtkörpern U2, U4 auf einen Wert erforderlich, der der gewünschten, auf den Rütteltisch 1 wirkenden Rüttelkraft mit einer bestimmten Rüttelamplitude entspricht. Dies geschieht in der Weise, daß die Drehzahl der beiden Antriebsmotoren M1, M2 kurzzeitig relativ zueinander geändert wird, indem beispielsweise der Motor M1 kurzzeitig mit höherer oder niedrigerer Drehzahl als der Motor M2 läuft, bis die gewünschte Phasenverstellung der Unwuchtkörper U1, U3 zu den Unwuchtkörpern U2, U4 erreicht ist. Bei Erreichen der gewünschten Phasenlage der Unwuchtkörper U1 - U4 wird die Drehzahl des Motors M1 auf diejenige des Motors M2 zurückgestellt, so daß die eingestellte Phasenlage der Unwuchtkörper U1 - U4 bei einem Synchronlauf der beiden Motoren M1, M2 für die Dauer des Rüttelvorganges erhalten bleibt. Die Rückstellung der Unwuchtkörper U1, U3 zu den Unwuchtkörpern U2, U4 in die Nullage zur Beendigung des Rüttelvorganges erfolgt in entgegengesetzt gleicher Weise.The two motors M1, M2 rotate continuously at a predetermined speed, the individual vibrating shafts R1 - R4 rotating in opposite directions to one another. The unbalance bodies U1 - U4 attached to the vibrating shafts R1 - R4 are positioned so that the centrifugal forces cancel each other and no vibrating force acts on the vibrating table. For the vibrating process, an adjustment of the phase or angular position of the unbalance bodies U1, U3 to the unbalance bodies U2, U4 is necessary to a value that corresponds to the desired vibrating force acting on the vibrating table 1 with a certain vibrating amplitude. This is done in such a way that the speed of the two drive motors M1, M2 is briefly changed relative to one another, for example by briefly running the motor M1 at a higher or lower speed than the motor M2 until the desired phase adjustment of the unbalance bodies U1, U3 to the unbalance bodies U2, U4 is reached. When the desired phase position of the unbalance bodies U1 - U4 is reached, the speed of the motor M1 is reset to that of the motor M2, so that the set phase position of the unbalance bodies U1 - U4 is maintained for the duration of the vibrating process when the two motors M1, M2 are synchronized. The resetting of the unbalance bodies U1, U3 to the unbalance bodies U2, U4 to the zero position at the end of the shaking process takes place in the opposite manner.

Der Effekt der vertikal gerichteten Schwingungen des Rütteltisches 1 kommt dadurch zustande, daß sich zu jedem Zeitpunkt die horizontalen Komponenten der durch die Unwuchtkörper U1, U3 und U2, U4 der Kreisschwinger der beiden Gegenlauferreger 4, 5 erzeugten Fliehkräfte gegenseitig aufheben, während sich die vertikal gerichteten Fliehkraftkomponenten addieren.The effect of the vertically directed vibrations of the Vibrating table 1 is achieved in that the horizontal components of the centrifugal forces generated by the unbalance bodies U1, U3 and U2, U4 of the circular oscillators of the two counter-rotating exciters 4, 5 cancel each other out at all times, while the vertically directed centrifugal force components add up.

Die Motorsteuerung 9 für die Rütteleinheit 2 weist im Bereich der Rüttelwellen R1, R2 angeordnete, als Impulsgeber ausgebildete Sensoren 10 zum Erfassen der Phasenlage der Unwuchtkörper U1, U2 der jeweils synchron umlaufenden Unwuchtkörper U1, U3 und U2, U4 der beiden Gegenlauferreger 4, 5 zueinander sowie der Drehzahl der Rüttelwellen R1, R3 und R2, R4, Steuereinheiten 11 für die beiden Motoren M1, M2, mit den Motoren M1, M2 gekuppelte Resolver zum laufenden Erfassen der Daten der Motorwelle 8, einen Rechner 12 sowie einen Schlupfregler 13 auf, der die vom Rechner 12 übermittelten, gespeicherten, produktspezifischen Solldaten für die Rüttelfrequenz und die Rüttelamplitude sowie die von den Sensoren 10 übermittelten Istdaten der Phasenlage der Unwuchtkörperpaare U1, U3 und U2, U4 und der Drehzahlen der Rüttelwellen R1, R3 und R2, R4 verarbeitet und dementsprechend die Drehzahl der Motoren M1, M2 über deren Steuereinheiten 11 steuert.The motor controller 9 for the vibrating unit 2 has sensors 10 arranged in the area of the vibrating shafts R1, R2 and designed as pulse generators for detecting the phase position of the unbalance bodies U1, U2 of the respective unbalanced bodies U1, U3 and U2, U4 of the two counter-rotating exciters 4, 5 as well as the speed of the vibrating shafts R1, R3 and R2, R4, control units 11 for the two motors M1, M2, resolvers coupled to the motors M1, M2 for the continuous acquisition of the data of the motor shaft 8, a computer 12 and a slip controller 13, which the stored, product-specific target data transmitted by the computer 12 for the vibrating frequency and the vibrating amplitude as well as the actual data transmitted by the sensors 10 of the phase position of the unbalance body pairs U1, U3 and U2, U4 and the speeds of the vibrating shafts R1, R3 and R2, R4 are processed and accordingly controls the speed of the motors M1, M2 via their control units 11.

Durch die Anordnung der Sensoren 10 im Bereich der rotierenden Unwuchtkörper U1, U2 bzw. der Rüttelwellen R1, R2 ist gewährleistet, daß der bei dem Keilriemenantrieb 6, 7 der Rüttelwellen R1, R2 auftretende Schlupf über den Schlupfregler 13 in die Drehzahlsteuerung der Motoren M1, M2 eingeht.The arrangement of the sensors 10 in the region of the rotating unbalance bodies U1, U2 or the vibrating shafts R1, R2 ensures that the slip occurring in the V-belt drive 6, 7 of the vibrating shafts R1, R2 via the slip controller 13 into the speed control of the motors M1, M2 is received.

Mit der Motorsteuerung 9 ist zur Änderung der Rüttelfrequenz die Drehzahl der Rüttelwellen R1 - R4 und zur Änderung der Phasenlage der Unwuchtkörperpaare U1, U3 und U2, U4 zueinander für eine Verstellung der Rüttelkraft bzw. der Rüttelamplitude die Drehzahl zumindest eines der beiden Motoren M1, M2 veränderbar.With the motor controller 9, the speed of the vibrating shafts R1-R4 and the change of the phase position of the unbalance body pairs U1, U3 and U2, U4 relative to one another for adjusting the vibrating force or the vibrating amplitude is the speed of at least one of the two for changing the vibrating frequency Motors M1, M2 changeable.

Fig. 2 verdeutlicht den Einbau von zwei gleichen, steuerungs- und regelungstechnisch im Verbund arbeitenden Rütteleinheiten 2 unter den beiden Tischhälften 1a, 1b eines geteilten Rütteltisches 1. Der geteilte Tisch bietet die Möglichkeit, die Tischhälften 1a, 1b synchron schwingen zu lassen oder durch ein entgegengesetztes Schwingen eine Wippbewegung der Tischhälften zu erzeugen.2 illustrates the installation of two identical vibrating units 2, which work in terms of open and closed-loop control technology, under the two table halves 1a, 1b of a divided vibrating table 1. The divided table offers the possibility of vibrating the table halves 1a, 1b synchronously or by one opposite swing to create a rocking motion of the table halves.

In Abänderung der vorbeschriebenen Rütteleinheit 2 können die beiden Rüttelwellenpaare R1, R3 und R2, R4 mit dem Motor M1 bzw. M2 und jeweils zwei oder drei Keilriemen 6 angetrieben werden.In a modification of the vibrating unit 2 described above, the two pairs of vibrating shafts R1, R3 and R2, R4 can be driven with the motor M1 or M2 and two or three V-belts 6 each.

Die unter den Rütteltischhälften 1a, 1b eines geteilten Rütteltisches 1 eingebauten Rütteleinheiten 14 nach Fig. 3 unterscheiden sich von den Rütteleinheiten 2 nach den Fign. 1 und 2 dadurch, daß die Kopplung der Rüttelwellen R1, R3 und R2, R4 durch ein Getriebe entfällt und daß die vier Rüttelwellen R1 - R4 jeweils durch einen eigenen Motor M1 - M4 und einen Keilriemenantrieb 6, 7 angetrieben werden. Diese Antriebsart der Rütteleinheit 14 bietet die Möglichkeit, außer einer Veränderung der Rüttelfrequenz und der Rüttelkraft bzw. der Rüttelamplitude zwischen dem Wert 0 und einem Maximalwert vor und während des Rüttelvorganges die Richtung der Rüttlung von einer waagerechten Querrüttlung bis zu einer senkrechten Rüttlung und umgekehrt zu verstellen.The vibrating units 14 according to FIG. 3 installed under the vibrating table halves 1a, 1b of a divided vibrating table 1 differ from the vibrating units 2 according to FIGS. 1 and 2 in that the coupling of the vibrating shafts R1, R3 and R2, R4 by a transmission is omitted and that the four vibrating shafts R1 - R4 are each driven by their own motor M1 - M4 and a V-belt drive 6, 7. This type of drive of the vibrating unit 14 offers the possibility, besides changing the vibrating frequency and the vibrating force or the vibrating amplitude, between the value 0 and a maximum value before and during the vibrating process, to change the direction of the vibrating from a horizontal transverse vibrating to a vertical vibrating and vice versa .

Schließlich veranschaulicht Fig. 4 einen geteilten Rütteltisch 1 mit zwei unter den Tischhälften 1a, 1b eingebauten Rütteleinheiten 15, die jeweils zwei horizontal nebeneinander angeordnete Gegenlauferreger 4, 5 aufweisen, die durch die nebeneinander angeordneten Rüttelwellenpaare R1, R3 und R 2, R4 gebildet werden.Finally, FIG. 4 illustrates a divided vibrating table 1 with two vibrating units 15 installed under the table halves 1a, 1b, each of which has two counter-rotating exciters 4, 5 arranged horizontally next to one another, which are formed by the vibrating shaft pairs R1, R3 and R 2, R4 arranged next to one another.

Claims (5)

Rüttelvorrichtung für den Rütteltisch einer Steinformmaschine, mit einem Unwuchrüttelantrieb, der als Richtschwinger mit paarweise einander zugeordneten, parallel verlaufenden und gegenläufig angetriebenen Kreisschwingern ausgebildet ist, die eine Rüttelwelle mit mindestens einem Unwuchtkörper aufweisen, sowie mit einer Steuerung zur Veränderung der Rüttelfrequenz durch eine Änderung der Rüttelwellendrehzahl und zur Veränderung der Rüttelkraft und der Rüttelamplitude durch eine Verstellung der Phasenlage von mindestens zwei Unwuchtkörpern zueinander durch eine kurzzeitige Änderung der Drehzahl zumindest der einen der beiden einander zugeordneten Rüttelwellen, gekennzeichnet durch eine Rütteleinheit (14, 15) mit mindestens vier paarweise vertikal übereinander oder horizontal nebeneinander angeordneten Rüttelwellen (R1 - R4) mit eigenem elektrischen Antriebsmotor (M1 - M4), der über mindestens einen Keilriemen (6) und zwei Riemenscheiben (7) die Rüttelwelle (R1 - R4) antreibt, und eine Steuerung (9) der Antriebsmotoren (M1 - M4) zur gegenseitigen relativen, kurzzeitigen Änderung und zur synchronen Änderung der Drehzahl der Motoren (M1 - M4), wobei die Motorsteuerung (9) mit einem Schlupfregler (13) zum Erfassen des am Keilriemenantrieb (6, 7) der Rüttelwellen (R1 - R4) auftretenden Schlupfes ausgestattet ist.Vibrating device for the vibrating table of a stone molding machine, with an unbalance vibratory drive, which is designed as a directional oscillator with paired, parallel and counter-rotating circular vibrators, which have a vibrating shaft with at least one unbalance body, and with a control for changing the vibrating frequency by changing the vibrating shaft speed and to change the vibrating force and the vibrating amplitude by adjusting the phase position of at least two unbalanced bodies relative to one another by briefly changing the speed of at least one of the two mutually associated vibrating shafts, characterized by a vibrating unit (14, 15) with at least four pairs vertically one above the other or horizontally side-by-side vibrating shafts (R1 - R4) with their own electric drive motor (M1 - M4), which via at least one V-belt (6) and two pulleys (7) the vibrating shaft (R1 - R4 ) drives, and a controller (9) of the drive motors (M1 - M4) for mutual relative, brief change and for synchronous change in the speed of the motors (M1 - M4), the motor controller (9) with a slip controller (13) for detection of the slip occurring on the V-belt drive (6, 7) of the vibrating shafts (R1 - R4). Rüttelvorrichtung nach dem Oberbegriff des Anspruchs 1, gekennzeichnet durch eine Rütteleinheit (2) mit mindestens vier paarweise vertikal übereinander oder horizontal nebeneinander angeordneten, parallelen Rüttelwellen (R1 - R4), wobei die Rüttelwellen (R1, R3; R2, R4) der Rüttelwellenpaare jeweils durch ein Zahnradgetriebe (3) für einen Synchronlauf miteinander verbunden sind und die beiden derart gebildeten Gegenlauferreger (4, 5) mit je einem Elektromotor (M1, M2) ausgestattet sind, die (M1, M2) über mindestens einen Keilriemen (6) und zwei Riemenscheiben (7) zwei Rüttelwellen (R1, R3; R2, R4) antreiben, sowie eine Steuerung (9) der beiden Antriebsmotoren (M1, M2) zur gegenseitigen relativen, kurzzeitigen Änderung und zur synchronen Änderung der Drehzahl der Motoren (M1, M2), wobei die Motorsteuerung (9) mit einem Schlupfregler (13) zum Erfassen des am Keilriemenantrieb (6, 7) der Rüttelwellen (R1, R3; R2, R4) auftretenden Schlupfes ausgestattet ist.Vibrating device according to the preamble of claim 1, characterized by a vibrating unit (2) with at least four parallel vibrating shafts (R1 - R4) arranged vertically one above the other or horizontally next to one another, the vibrating shafts (R1, R3; R2, R4) of the vibrating shaft pairs each a gear transmission (3) for synchronous operation are connected to each other and the two counter-rotating exciters (4, 5) thus formed are each equipped with an electric motor (M1, M2), which (M1, M2) via at least one V-belt (6) and two pulleys (7) two vibrating shafts (R1, R3; R2, R4) drive, as well as a controller (9) of the two drive motors (M1, M2) for mutual relative, short-term change and for synchronous change in the speed of the motors (M1, M2), the motor controller (9 ) is equipped with a slip controller (13) for detecting the slip occurring on the V-belt drive (6, 7) of the vibrating shafts (R1, R3; R2, R4). Rüttelvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Motorsteuerung (9) im Bereich der Rüttelwellen (R1 - R4; R1, R2) angeordnete, als Impulsgeber ausgebildete Sensoren (10) zum Erfassen der Phasenlage der umlaufenden Unwuchtkörper (U1 - U4; U1, U2) der einzelnen Rüttelwellen (R1 - R4) bzw. der Phasenlage der jeweils synchron umlaufenden Unwuchtkörper (U1, U3; U2, U4) der beiden Gegenlauferreger (4, 5) zueinander sowie der Rüttelwellendrehzahl, Steuereinheiten (11) für die Motoren (M1 - M4; M1, M2), mit den Motoren (M1 - M4) gekuppelte Resolver zum laufenden Erfassen der Position der Motorwelle, einen Rechner (12) sowie einen Schlupfregler (13) aufweist, der die vom Rechner (12) übermittelten, gespeicherten, produktspezifischen Daten für die Rüttelfrequenz und die Rüttelamplitude sowie die von den Sensoren (10) übermittelten Daten der Phasenlage der einzelnen Unwuchtkörper (U1 - U4) bzw. Unwuchtkörperpaare (U1, U3; U2, U4) und der Drehzahlen der Rüttelwellen (R1 - R4) verarbeitet und dementsprechend die Drehzahl der Motoren (M1 - M4; M1, M2) über deren Steuereinheiten (11) steuert.Vibrating device according to Claim 1, characterized in that the motor control (9) in the region of the vibrating shafts (R1 - R4; R1, R2), designed as pulse generators, for detecting the phase position of the rotating unbalance bodies (U1 - U4; U1, U2) of the individual vibrating shafts (R1 - R4) or the phase position of the synchronously rotating unbalance bodies (U1, U3; U2, U4) of the two counter-rotating exciters (4, 5) to each other as well as the vibrating shaft speed, control units (11) for the motors (M1 - M4; M1, M2), resolvers coupled to the motors (M1 - M4) for the continuous detection of the position of the motor shaft, a computer (12) and a slip controller (13) which stores the stored, transmitted by the computer (12), Product-specific data for the vibrating frequency and the vibrating amplitude as well as the data of the phase position of the individual unbalanced bodies (U1 - U4) or pairs of unbalanced bodies (U1, U3; U2, U4) and the speeds of the vibrating shaft transmitted by the sensors (10) en (R1 - R4) and accordingly the speed of the motors (M1 - M4; M1, M2) controls their control units (11). Rüttelvorrichtung nach einem der Ansprüche 1 bis 3, gekennzeichnet durch einen Riemenantrieb der Motoren (M1, M2; M1 - M4) mit zwei oder drei Keilriemen (6).Vibrating device according to one of claims 1 to 3, characterized by a belt drive of the motors (M1, M2; M1 - M4) with two or three V-belts (6). Rüttelvorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß der Rütteltisch (1) zwei getrennte Tischhälften (1a, 1b) aufweist, die mit je einer Rütteleinheit (2, 14, 15) ausgerüstet sind.Vibrating device according to one of claims 1 to 4, characterized in that the vibrating table (1) has two separate table halves (1a, 1b), each of which is equipped with a vibrating unit (2, 14, 15).
EP96104954A 1995-03-30 1996-03-28 Vibration device for a vibrating table of a moulding machine Withdrawn EP0734786A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19511608 1995-03-30
DE1995111608 DE19511608A1 (en) 1995-03-30 1995-03-30 Vibrating device for the vibrating table of a stone molding machine

Publications (1)

Publication Number Publication Date
EP0734786A1 true EP0734786A1 (en) 1996-10-02

Family

ID=7758110

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96104954A Withdrawn EP0734786A1 (en) 1995-03-30 1996-03-28 Vibration device for a vibrating table of a moulding machine

Country Status (2)

Country Link
EP (1) EP0734786A1 (en)
DE (1) DE19511608A1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2147779A1 (en) * 2008-07-25 2010-01-27 Quadra 1 Vibrating press for the production of construction elements and method for producing construction elements
CN102247609A (en) * 2011-04-29 2011-11-23 孙铭学 Cooling and sterilizing process for protein preparation and special horizontal type shaking table thereof
ES2383408A1 (en) * 2008-12-01 2012-06-21 Metalurgica Poyatos, S.A. Mechanism for a vibrator device and vibrator device (Machine-translation by Google Translate, not legally binding)
CN103372904B (en) * 2012-04-28 2015-08-12 李湛章 The plaster board production equipment of mould skew can be corrected
CN107160538A (en) * 2017-06-12 2017-09-15 东北大学 A kind of four machines driving composite sync vibrating forming machine and structural parameter determining method
CN107165373A (en) * 2017-07-26 2017-09-15 江苏百博木业有限公司 A kind of antibacterial environment protection floor and its laying method

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29819501U1 (en) * 1998-11-03 1998-12-24 Zenith Maschf Gmbh Vibrating device for stone molding machines
DE102017109686B4 (en) * 2017-05-05 2019-08-29 Ammann Schweiz Ag Soil Compactor

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2509247A1 (en) * 1975-03-04 1976-09-23 Widu Kupplungsbau Gmbh & Co Kg V-belt driven foundation consolidating vibrator machine - with vibrators alternately driven by double centrifugal clutch switchgear below cover plate
US4255254A (en) * 1979-11-19 1981-03-10 Faunce And Associates, Inc. Delayed counterweight vibrator apparatus
FR2481957A1 (en) * 1980-05-06 1981-11-13 Dios Gimenez Moscoso Juan De Multi-directional powered vibrator - has spindle of hydraulic motors driving auxiliary pulleys causing rotation in opposite directions
EP0092014A1 (en) * 1982-04-21 1983-10-26 Losenhausen Maschinenbau AG& Co Kommanditgesellschaft Regulator for a vibrations generator with unbalanced masses
DE4116647C1 (en) * 1991-05-22 1992-07-02 Hess Maschinenfabrik Gmbh & Co Kg, 5909 Burbach, De
WO1992020467A1 (en) * 1991-05-22 1992-11-26 Societe Materiels Vincent Vaillant Mvv S.A. Device allowing the control and action of vibratory effects on machines and materials particularly for the treatment of products intended to be vibrated, compressed and compacted
WO1993025762A1 (en) * 1992-06-05 1993-12-23 M-B-W, Inc. Improved drive mechanism for a vibratory compactor
DE4301368A1 (en) 1992-07-03 1994-01-05 Gedib Ingbuero Innovation Device and method for exciting vibrations
DE4317351A1 (en) 1993-05-25 1994-12-01 Omag Maschinenbau Ag Concrete mould vibrating machine, in particular core vibrator
DE9416260U1 (en) * 1994-10-10 1994-12-08 Tuenkers Maschinenbau Gmbh Vibration bear for ramming and / or pulling rammed goods
DE4000011C2 (en) 1989-12-20 1995-02-09 Gedib Ingbuero Innovation Vibration excitation device
DE4407013A1 (en) 1994-03-03 1995-09-07 Gedib Ingbuero Innovation Hydraulic driven vibrator with unbalanced weight system

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1584436A1 (en) * 1966-05-06 1970-02-26 Guetegemeinschaft Grossformati Device for the production of concrete moldings, in particular roof tiles
DE2231271C3 (en) * 1972-06-26 1975-06-05 Heinrich Strasser Radial vibrator for compacting concrete in sheet steel molds of machines for the production of concrete blocks or precast concrete parts
DE7242675U (en) * 1972-11-20 1973-03-08 Maier G RUETTEL DEVICE FOR THE PRODUCTION OF ARTIFICIAL STONES OR THE SAME
DE8027804U1 (en) * 1980-10-18 1981-04-02 Zenith-Maschinenfabrik Gmbh, 5908 Neunkirchen BALANCE TRUETTERS, ESPECIALLY FOR STONE MOLDING MACHINES
DE3709112C1 (en) * 1986-08-27 1988-01-28 Knauer Maschf Gmbh Vibrating device for a concrete block molding machine

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2509247A1 (en) * 1975-03-04 1976-09-23 Widu Kupplungsbau Gmbh & Co Kg V-belt driven foundation consolidating vibrator machine - with vibrators alternately driven by double centrifugal clutch switchgear below cover plate
US4255254A (en) * 1979-11-19 1981-03-10 Faunce And Associates, Inc. Delayed counterweight vibrator apparatus
FR2481957A1 (en) * 1980-05-06 1981-11-13 Dios Gimenez Moscoso Juan De Multi-directional powered vibrator - has spindle of hydraulic motors driving auxiliary pulleys causing rotation in opposite directions
EP0092014A1 (en) * 1982-04-21 1983-10-26 Losenhausen Maschinenbau AG& Co Kommanditgesellschaft Regulator for a vibrations generator with unbalanced masses
DE4000011C2 (en) 1989-12-20 1995-02-09 Gedib Ingbuero Innovation Vibration excitation device
DE4116647C1 (en) * 1991-05-22 1992-07-02 Hess Maschinenfabrik Gmbh & Co Kg, 5909 Burbach, De
WO1992020467A1 (en) * 1991-05-22 1992-11-26 Societe Materiels Vincent Vaillant Mvv S.A. Device allowing the control and action of vibratory effects on machines and materials particularly for the treatment of products intended to be vibrated, compressed and compacted
WO1993025762A1 (en) * 1992-06-05 1993-12-23 M-B-W, Inc. Improved drive mechanism for a vibratory compactor
DE4301368A1 (en) 1992-07-03 1994-01-05 Gedib Ingbuero Innovation Device and method for exciting vibrations
DE4317351A1 (en) 1993-05-25 1994-12-01 Omag Maschinenbau Ag Concrete mould vibrating machine, in particular core vibrator
DE4407013A1 (en) 1994-03-03 1995-09-07 Gedib Ingbuero Innovation Hydraulic driven vibrator with unbalanced weight system
DE9416260U1 (en) * 1994-10-10 1994-12-08 Tuenkers Maschinenbau Gmbh Vibration bear for ramming and / or pulling rammed goods

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2147779A1 (en) * 2008-07-25 2010-01-27 Quadra 1 Vibrating press for the production of construction elements and method for producing construction elements
FR2934192A1 (en) * 2008-07-25 2010-01-29 Quadra 1 VIBRATING PRESS FOR THE PRODUCTION OF CONSTRUCTION ELEMENTS AND METHOD FOR PRODUCING BUILDING ELEMENTS
ES2383408A1 (en) * 2008-12-01 2012-06-21 Metalurgica Poyatos, S.A. Mechanism for a vibrator device and vibrator device (Machine-translation by Google Translate, not legally binding)
CN102247609A (en) * 2011-04-29 2011-11-23 孙铭学 Cooling and sterilizing process for protein preparation and special horizontal type shaking table thereof
CN102247609B (en) * 2011-04-29 2013-11-06 孙铭学 Special horizontal type shaking table for cooling and sterilizing process for protein preparation
CN103372904B (en) * 2012-04-28 2015-08-12 李湛章 The plaster board production equipment of mould skew can be corrected
CN107160538A (en) * 2017-06-12 2017-09-15 东北大学 A kind of four machines driving composite sync vibrating forming machine and structural parameter determining method
CN107160538B (en) * 2017-06-12 2020-08-04 东北大学 Four-machine driving composite synchronous vibration forming machine and structural parameter determination method
CN107165373A (en) * 2017-07-26 2017-09-15 江苏百博木业有限公司 A kind of antibacterial environment protection floor and its laying method
CN107165373B (en) * 2017-07-26 2019-03-01 江苏百博木业有限公司 A kind of antibacterial environment protection floor and its laying method

Also Published As

Publication number Publication date
DE19511608A1 (en) 1996-10-10

Similar Documents

Publication Publication Date Title
EP0515305B1 (en) Vibrator
DE19631849C1 (en) Vibration drive for a screening machine
DE3709112C1 (en) Vibrating device for a concrete block molding machine
DE19638695B4 (en) Modular Vibration Generator and Method of Operation
EP2105214A1 (en) Vibration creator
EP2910312A1 (en) Pivoting assembly for a vibrating table or a screening device
EP0734786A1 (en) Vibration device for a vibrating table of a moulding machine
EP0980292B1 (en) Device for generating directed vibrations
EP3789126A1 (en) Adjustable screening machine
DE3708922A1 (en) Device for manufacturing concrete parts
DE19812986C1 (en) Unbalance shaker for stone molding machines
EP3693090A1 (en) Adjustable screening machine and method for operating an adjustable screening machine
DE69818151T2 (en) Control system for hydroelastic bearings
DE4317351A1 (en) Concrete mould vibrating machine, in particular core vibrator
EP3165290B1 (en) Vibration generator and method for inserting a pile element into the ground
DE2528269A1 (en) Out of balance weight vibration generator - uses timing belt coupling between parallel shafts with provision for synchronisation of motion
DE19527950B4 (en) Combing machine with at least one combing head
DE4106443A1 (en) Vibration machine with frame elastically mounted on support - has two pairs of shafts with same nominal rotational speeds
EP0999020A2 (en) Unbalanced mass vibrations generator for a bricks moulding machine
AT220651B (en) Soil compactor with rotating imbalances
DE4414053C2 (en) Drive system for vibratory and offset drives on warp knitting machines
EP0734785B1 (en) Vibratory device for moulding building blocks
DE431928C (en) Arrangement of mechanically oscillating systems
DE2724534A1 (en) Automatic synchronisation of contra-rotating imbalanced exciter shafts - has positive link between gearings of each shaft and connecting shaft in two parts
EP1214988B1 (en) Device for producing pipes from a compactable material

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT ES FR IE IT

17P Request for examination filed

Effective date: 19970325

17Q First examination report despatched

Effective date: 19980511

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

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Withdrawal date: 19981207