EP0980292B1 - Device for generating directed vibrations - Google Patents
Device for generating directed vibrations Download PDFInfo
- Publication number
- EP0980292B1 EP0980292B1 EP98925536A EP98925536A EP0980292B1 EP 0980292 B1 EP0980292 B1 EP 0980292B1 EP 98925536 A EP98925536 A EP 98925536A EP 98925536 A EP98925536 A EP 98925536A EP 0980292 B1 EP0980292 B1 EP 0980292B1
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- EP
- European Patent Office
- Prior art keywords
- carrier
- vibration
- centrifugal weights
- bracket
- directed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- 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
- B06B1/12—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of mechanical energy operating with systems involving reciprocating masses
- B06B1/14—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of mechanical energy operating with systems involving reciprocating masses the masses being elastically coupled
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/18—Mechanical movements
- Y10T74/18056—Rotary to or from reciprocating or oscillating
- Y10T74/18344—Unbalanced weights
Definitions
- the invention relates to a device for generating directed vibrations.
- the structure can be a vibrating table for concrete compaction or a working device, e.g. a vibrating plate for soil compaction, act.
- a vibrating table for concrete compaction
- a working device e.g. a vibrating plate for soil compaction
- the directional vibrations are predominant by electrically / electronically or mechanically synchronized vibrators or also generated by pendulum vibrators.
- the vibrators are two counter-rotating centrifugal weights, their opposing centrifugal components cancel each other out while the plane perpendicular to the plane spanned by the axes of rotation of the centrifugal weights standing centrifugal forces add up to a resulting force and the vibration cause.
- the centrifugal weights are synchronized with sometimes considerable Effort in a mechanical, electrical or electronic way. To the appearance of harmful forces in a direction transverse to the actual direction of vibration Avoiding is a considerable precision in the synchronization required.
- Such a device is known from GB-A-2 103 333.
- the one described The device has, among other things, inflatable chambers, the changeable ones Stiffness the strength of the vibration generated by flyweights on a console determine.
- the invention is therefore based on the object of specifying a device with which generates directional vibrations with reasonable design effort and can be added to a structure.
- a device for generating directed vibrations is characterized by at least two flyweights with essentially the same m * r, which are mutually independent at essentially the same speed in opposite directions can be driven to rotate about an axis parallel to one another: a largely rigid one Carrier on which the at least two flyweights are rotatably mounted; and by a console to which the carrier can be fastened via a bracket such that the carrier is movable relative to the console.
- this is a particularly preferred embodiment of the invention characterized in that the carrier relative to the console in the direction of the generated directed vibration as well as in a direction perpendicular to the direction of vibration and is movable perpendicular to the axes of rotation of the flyweights.
- the vibration to be generated is perpendicular to one through the Axes of rotation of the flyweights aligned plane.
- the holder has at least one spring element for transmitting the movement of the carrier in Direction of the directed vibration.
- the spring element can also act as a rubber-elastic element.
- the holder has at least one spring element for transmitting the Movement of the carrier in the direction perpendicular to the direction of vibration and perpendicular to the axes of rotation of the flyweights. Ensure the spring elements mobility of the carrier in the holder and thus relative to the console, without an unacceptable play between the carrier and the bracket can.
- the spring elements particularly when coupled with damping elements, effective noise reduction because of the centrifugal weights and their drive generated structure-borne sound vibrations not or only partially on the Console.
- the stiffness of the spring element or elements is related to the stiffness adapted to the wearer. This ensures that the self-synchronization of the two flyweights regardless of the structure to be excited.
- a particularly advantageous embodiment of the invention is characterized in that that the bracket has two bracket units attached to the console, between which the carrier is movably received.
- the bracket units are opposite each other with the carrier arranged therebetween, so that the carrier can be held securely without the need for additional components are.
- Each of the mounting units advantageously has a spring element into which the carrier is inserted.
- a drive for each Centrifugal weight arranged on the carrier Since according to the invention the flyweights synchronize independently, it is not necessary to use mechanical, additionally synchronize electrical or electronic components.
- centrifugal weights axially in half and with the drive motor arranged in between in order to carry out the bearing and To equalize shaft loads on the motors.
- the console is part of a structure in which the directed vibrations can be initiated. This means either that the bracket or the mounting units are attached directly to the structure to be excited be, or that the console with the bracket and the carrier as a structural unit is attachable to the structure.
- the structure is a vibrating table or a vibrating plate is because with such a use of the device the previously known replace complex vibration generator with a simpler device to let.
- the single figure shows a sectional view of a device according to an embodiment the invention.
- flyweights 1 are in the form of unbalances on axes of rotation 2 rotatably and are each via the axes of rotation 2 by not shown Electric motors driven.
- two centrifugal weights 1 are provided in the depth direction of the figure, between which the drive motor is arranged. Such arrangements are already known from devices with positively synchronized flyweights, so that no further description is given.
- the centrifugal weights 1, the axes of rotation 2 and the drive motors are each by means of Supports 3 connected to a common support 4.
- the carrier 4 is a relative thick steel plate and should be made as rigid as possible.
- the supports 3 are welded or screwed onto the support 4 and form with the support 4 also the most rigid construction possible.
- the carrier 4 is on two of its end faces by mounting units forming a mounting 5a and 5b, which are in turn welded to a bracket 6, In other embodiments, the bracket units are not with the console welded, but screwed. Grip over the mounting units 5a and 5b hook-like the carrier 4, being between the carrier 4 and the mounting units 5a, 5b spring elements 7 are inserted.
- the spring elements 7 can e.g. made of rubber or consist of elastic plastic and, if necessary, also damping properties exhibit.
- a gap 8 is formed in each case.
- This gap 8 enables it that the carrier with the unbalance units attached to it when starting of the centrifugal weights 1 move slightly in the horizontal direction with respect to FIG. 1 can what is required for the synchronization of the flyweights 1.
- the gap 8 can also be filled by a spring element in another embodiment in order to avoid that the carrier 4 directly onto the mounting units 5a, 5b hits.
- the flyweights 1 are driven by the drive motors in opposite rotation at substantially the same speed brought. Because their product consists of mass the unbalance and radius of the unbalance center is essentially the same, so are those resulting from the rotation Centrifugal forces essentially the same. Due to the opposite rotation, they rise the - seen in relation to Fig. 1 - horizontal components of the centrifugal forces mutually on, while the vertical components in the direction of arrow 9 of the centrifugal forces add and thus generate a directional vibration in the direction of arrow 9.
- the one directed perpendicular to a plane spanned by the axes of rotation 2 Vibration is on the rigid support 4 and the spring elements 7 on the Transfer console 6 where it can be used in the desired manner.
- the console 6 can be used on a structure or on a device Work equipment can be attached to the directional vibration in the desired direction Way to initiate. It is also possible that the console 6 is already part of the to be excited Structure or the implement is.
- the console 6 can be a component a vibration plate for soil compaction or a formwork skin Vibrating table for concrete compaction.
- the device can not only with the aforementioned vibrating table or the vibrating plate, but also with any other device, where directional vibrations are required.
- the embodiment shown in the figure has two mounting units 5a, 5b on. In a smaller embodiment of the invention, it is also possible To attach the carrier 4 to the console 6 by only one mounting unit.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Description
Die Erfindung betrifft eine Vorrichtung zum Erzeugen gerichteter Schwingungen.The invention relates to a device for generating directed vibrations.
Derartige Vorrichtungen sind bekannt und dienen zur Einleitung gerichteter Schwingungen in eine Struktur. Bei der Struktur kann es sich um einen Rütteltisch zur Betonverdichtung oder um ein Arbeitsgerät, z.B. eine Rüttelplatte zur Bodenverdichtung, handeln. Bei Rütteltischen werden die gerichteten Schwingungen vorwiegend durch elektrisch/elektronisch oder mechanisch zwangsweise synchronisierte Rüttler oder auch durch Pendelrüttler erzeugt.Such devices are known and are used to initiate directed vibrations into a structure. The structure can be a vibrating table for concrete compaction or a working device, e.g. a vibrating plate for soil compaction, act. With vibrating tables, the directional vibrations are predominant by electrically / electronically or mechanically synchronized vibrators or also generated by pendulum vibrators.
Bei den Rüttlern handelt es sich um zwei gegensinnig rotierende Fliehgewichte, deren gegeneinander gerichtete Fliehkraftkomponenten sich gegenseitig aufheben, während die senkrecht zu der durch die Drehachsen der Fliehgewichte aufgespannten Ebene stehenden Fliehkräfte sich zu einer resultierenden Kraft addieren und die Schwingung bewirken. Die Synchronisation der Fliehgewichte erfolgt mit teilweise erheblichem Aufwand auf mechanische, elektrische oder elektronische Weise. Um das Auftreten von schädlichen Kräften in einer Richtung quer zu der eigentlichen Schwingungsrichtung zu vermeiden, ist eine erhebliche Präzision bei der Synchronisation erforderlich.The vibrators are two counter-rotating centrifugal weights, their opposing centrifugal components cancel each other out while the plane perpendicular to the plane spanned by the axes of rotation of the centrifugal weights standing centrifugal forces add up to a resulting force and the vibration cause. The centrifugal weights are synchronized with sometimes considerable Effort in a mechanical, electrical or electronic way. To the appearance of harmful forces in a direction transverse to the actual direction of vibration Avoiding is a considerable precision in the synchronization required.
Ebenfalls wie bei Rütteltischen ist es auch bei Bodenverdichtungsgeräten, insbesondere bei Vibrationsplatten, bekannt, daß eine reine gerichtete Schwingung dadurch erhalten werden kann, daß zwei Fliehgewichte mit gleichem m * r (Produkt aus Masse der Unwucht und Radius des Schwerpunkts) um zueinander parallele Achsen mit gleicher Drehzahl gegensinnig in Drehung versetzt werden. Zu diesem Zweck sind bei den bekannten Geräten die in einem gemeinsamen Gehäuse gelagerten Unwuchten ebenfalls zwangsweise miteinander drehbar gekoppelt und von einem gemeinsamen Antrieb her beide mit der gewünschten gleichen Drehzahl in Gegensinn angetrieben.As with vibrating tables, it is also the case with soil compaction equipment, in particular in vibration plates, known that a pure directional vibration can be obtained that two flyweights with the same m * r (product of mass the unbalance and radius of the center of gravity) with axes parallel to each other the same speed are rotated in opposite directions. For this purpose, at the known devices the unbalances stored in a common housing also forcibly rotatably coupled to one another and by a common one Drive both driven in the opposite direction with the desired same speed.
Insbesondere bei dem Einsatz bei Rütteltischen hat sich die bekannte Art der Erzeugung gerichteter Schwingungen wegen des damit verbundenen hohen konstruktiven Aufwands und den damit verbundenen Kosten als problematisch erwiesen.In particular, when using vibrating tables, the known type of production has been developed directional vibrations because of the associated high structural Expenses and the associated costs proved to be problematic.
Eine derartige Vorrichtung ist aus der GB-A-2 103 333 bekannt. Die beschriebene Vorrichtung weist unter anderem aufblasbare Kammern auf, deren veränderbare Steifigkeit die Stärke der von Fliehgewichten erzeugten Schwingung auf eine Konsole bestimmen. Such a device is known from GB-A-2 103 333. The one described The device has, among other things, inflatable chambers, the changeable ones Stiffness the strength of the vibration generated by flyweights on a console determine.
Der Erfindung liegt daher die Aufgabe zugrunde, eine Vorrichtung anzugeben, mit der bei vertretbarem konstruktivem Aufwand gerichtete Schwingungen erzeugt und einer Struktur zugeführt werden können. The invention is therefore based on the object of specifying a device with which generates directional vibrations with reasonable design effort and can be added to a structure.
Erfindungsgemäß wird die Aufgabe durch eine Vorrichtung mit den Merkmalen von
Patentanspruch 1 gelöst. Vorteilhafte Weiterentwicklungen der Erfindung sind den
abhängigen Ansprüchen zu entnehmen.According to the invention, the object is achieved by a device with the features of
Eine erfindungsgemäße Vorrichtung zum Erzeugen gerichteter Schwingungen ist gekennzeichnet durch wenigstens zwei Fliehgewichte mit im wesentlichen gleichem m * r, die voneinander unabhängig mit im wesentlichen gleicher Drehzahl gegensinnig um zueinander parallele Achse drehend antreibbar sind: einen weitgehend starren Träger, auf dem die wenigstens zwei Fliehgewichte drehbar gelagert sind; und durch eine Konsole, an der der Träger über eine Halterung derart befestigbar ist, daß der Träger relativ zu der Konsole beweglich ist.A device according to the invention for generating directed vibrations is characterized by at least two flyweights with essentially the same m * r, which are mutually independent at essentially the same speed in opposite directions can be driven to rotate about an axis parallel to one another: a largely rigid one Carrier on which the at least two flyweights are rotatably mounted; and by a console to which the carrier can be fastened via a bracket such that the carrier is movable relative to the console.
Es hat sich überraschend gezeigt, daß beim Einschalten des Antriebs der Fliehgewichte bei der in der vorstehenden Weise gestalteten Vorrichtung nahezu augenblicklich eine selbsttätige Synchronisation der beiden Fliehgewichte stattfindet, wenn in Richtung parallel zur gemeinsamen Ebene der Drehachsen der Fliehgewichte, d.h. in Richtung senkrecht zur Schwingungsrichtung und senkrecht zu den Drehachsen der Fliehgewichte, sowie senkrecht zu den Drehachsen, d.h. in Richtung der zu erzeugenden Schwingungen, der die Fliehgewichte tragende Träger jeweils einen Bewegungsfreiheitsgrad hat, der in der Regel konstruktiv durch eine gewisse Materialelastizität gegeben ist und im Bedarfsfalle auch in der Größe passend eingerichtet werden kann. Voraussetzung dafür ist jedoch, daß der Träger weitgehend starr ist. Aus diesem Grund laufen die Fliehgewichte des Unwucht-Schwingungserregers so, als wären sie miteinander zur Erzeugung einer reinen gerichteten Schwingung miteinander zwangsgekoppelt, ohne daß dies in Wirklichkeit der Fall ist, so daß der diesbezüglich übliche hohe konstruktive Aufwand und die damit einhergehende Störanfälligkeit vermieden wird. Darüber hinaus ergibt sich eine leichtere Montierbarkeit, da die gesamte Vorrichtung leicht in unabhängige Teilkomponenten zerlegt werden kann. Dies ist insbesondere für die Montage an Rütteltischen von Bedeutung.It has surprisingly been found that when the drive is switched on the flyweights almost instantaneously in the device designed in the above manner automatic synchronization of the two flyweights takes place when in Direction parallel to the common plane of the axes of rotation of the flyweights, i.e. in Direction perpendicular to the direction of vibration and perpendicular to the axes of rotation of the Centrifugal weights, as well as perpendicular to the axes of rotation, i.e. towards the ones to be generated Vibrations, the carrier carrying the flyweights each have a degree of freedom of movement which is usually constructive due to a certain material elasticity is given and, if necessary, can also be set up appropriately in size can. However, the prerequisite for this is that the carrier is largely rigid. Out For this reason, the flyweights of the unbalance vibration exciter run as if they were together to produce a pure directional vibration with each other forcibly coupled, but this is not actually the case, so that in this regard usual high design effort and the associated susceptibility to failure is avoided. In addition, it is easier to assemble because the entire device can be easily disassembled into independent sub-components can. This is particularly important for mounting on vibrating tables.
Aus diesem Grund ist eine besonders bevorzugte Ausführungsform der Erfindung dadurch gekennzeichnet, daß der Träger relativ zu der Konsole in Richtung der zu erzeugenden gerichteten Schwingung sowie in einer Richtung senkrecht zu der Schwingungsrichtung und senkrecht zu den Drehachsen der Fliehgewichte beweglich ist.For this reason, this is a particularly preferred embodiment of the invention characterized in that the carrier relative to the console in the direction of the generated directed vibration as well as in a direction perpendicular to the direction of vibration and is movable perpendicular to the axes of rotation of the flyweights.
Vorteilhafterweise ist die zu erzeugende Schwingung senkrecht zu einer durch die Drehachsen der Fliehgewichte aufgespannten Ebene ausgerichtet. Advantageously, the vibration to be generated is perpendicular to one through the Axes of rotation of the flyweights aligned plane.
Bei einer besonders vorteilhaften Weiterentwicklung der Erfindung weist die Halterung wenigstens ein Federelement zum Übertragen der Bewegung des Trägers in Richtung der gerichteten Schwingung auf. Bei dem Federelement kann es sich auch um ein gummielastisches Element handeln. Bei einer anderen vorteilhaften Weiterentwicklung weist die Halterung wenigstens ein Federelement zum Übertragen der Bewegung des Trägers in Richtung senkrecht zu der Schwingungsrichtung und senkrecht zu den Drehachsen der Fliehgewichte auf. Die Federelemente gewährleisten eine Beweglichkeit des Trägers in der Halterung und damit relativ zu der Konsole, ohne daß ein unzulässiges Spiel zwischen dem Träger und der Halterung auftreten kann. Weiterhin bewirken die Federelemente, insbesondere bei Kopplung mit Dämpfungselementen, eine effektive Lärmreduzierung, da die von den Fliehgewichten und deren Antrieb erzeugten Körperschallschwingungen nicht oder nur zum Teil auf die Konsole übertragen werden.In a particularly advantageous further development of the invention, the holder has at least one spring element for transmitting the movement of the carrier in Direction of the directed vibration. The spring element can also act as a rubber-elastic element. With another advantageous development the holder has at least one spring element for transmitting the Movement of the carrier in the direction perpendicular to the direction of vibration and perpendicular to the axes of rotation of the flyweights. Ensure the spring elements mobility of the carrier in the holder and thus relative to the console, without an unacceptable play between the carrier and the bracket can. Furthermore, the spring elements, particularly when coupled with damping elements, effective noise reduction because of the centrifugal weights and their drive generated structure-borne sound vibrations not or only partially on the Console.
Vorteilhafterweise sind die Steifigkeit des oder der Federelemente an die Steifigkeit des Trägers angepaßt. Dadurch wird sichergestellt, daß sich die Selbstsynchronisation der beiden Fliehgewichte unabhängig von der anzuregenden Struktur einstellt.Advantageously, the stiffness of the spring element or elements is related to the stiffness adapted to the wearer. This ensures that the self-synchronization of the two flyweights regardless of the structure to be excited.
Eine besonders vorteilhafte Ausführungsform der Erfindung ist dadurch gekennzeichnet, daß die Halterung zwei an der Konsole befestigte Halterungseinheiten aufweist, zwischen die der Träger beweglich aufgenommen ist. Die Halterungseinheiten stehen einander bei dazwischen angeordnetem Träger gegenüber, so daß der Träger sicher festgehalten werden kann, ohne daß zusätzliche Bauelemente erforderlich sind.A particularly advantageous embodiment of the invention is characterized in that that the bracket has two bracket units attached to the console, between which the carrier is movably received. The bracket units are opposite each other with the carrier arranged therebetween, so that the carrier can be held securely without the need for additional components are.
Vorteilhafterweise weist jede der Halterungseinheiten ein Federelement auf, in das der Träger eingesetzt ist.Each of the mounting units advantageously has a spring element into which the carrier is inserted.
Bei einer bevorzugten Ausführungsform der Erfindung ist Jeweils ein Antrieb für ein Fliehgewicht auf dem Träger angeordnet. Da sich erfindungsgemäß die Fliehgewichte selbständig synchronisieren, ist es nicht erforderlich, die Antriebe durch mechanische, elektrische oder elektronische Komponenten zusätzlich zu synchronisieren.In a preferred embodiment of the invention, a drive for each Centrifugal weight arranged on the carrier. Since according to the invention the flyweights synchronize independently, it is not necessary to use mechanical, additionally synchronize electrical or electronic components.
Besonders zweckmäßig kann es sein, die Fliehgewichte jeweils hälftig axial geteilt und mit jeweils dazwischen angeordnetem Antriebsmotor auszuführen, um die Lagerund Wellenbelastungen der Motoren zu vergleichmäßigen. It may be particularly expedient to split the centrifugal weights axially in half and with the drive motor arranged in between in order to carry out the bearing and To equalize shaft loads on the motors.
Besonders vorteilhaft ist es, wenn die Konsole Bestandteil einer Struktur ist, in die die gerichteten Schwingungen einleitbar sind. Dies bedeutet entweder, daß die Halterung bzw. die Halterungseinheiten direkt auf der anzuregenden Struktur befestigt werden, oder daß die Konsole mit der Halterung und dem Träger als bauliche Einheit an der Struktur befestigbar ist.It is particularly advantageous if the console is part of a structure in which the directed vibrations can be initiated. This means either that the bracket or the mounting units are attached directly to the structure to be excited be, or that the console with the bracket and the carrier as a structural unit is attachable to the structure.
Ebenfalls vorteilhaft ist es, wenn die Struktur ein Rütteltisch oder eine Vibrationsplatte ist, weil sich bei einer derartigen Verwendung der Vorrichtung die bisher bekannten aufwendigen Schwingungserzeuger durch eine einfachere Vorrichtung ersetzen lassen.It is also advantageous if the structure is a vibrating table or a vibrating plate is because with such a use of the device the previously known replace complex vibration generator with a simpler device to let.
Diese und weitere Vorteile und Merkmale der Erfindung werden nachfolgend unter Zuhilfenahme der begleitenden Figur näher erläutert.These and other advantages and features of the invention are set out below Using the accompanying figure explained in more detail.
Die einzige Figur zeigt eine Schnittdarstellung einer Vorrichtung gemäß einerAusführungsform der Erfindung.The single figure shows a sectional view of a device according to an embodiment the invention.
Zwei schematisch dargestellte Fliehgewichte 1 sind in Form von Unwuchten an Drehachsen
2 drehbar gehalten und werden über die Drehachsen 2 jeweils von nicht dargestellten
Elektromotoren angetrieben. Bei einer anderen Ausführungsform der Erfindung
sind in Tiefenrichtung der Figur jeweils zwei Fliehgewichte 1 vorgesehen,
zwischen denen der Antriebsmotor angeordnet ist. Derartige Anordnungen sind aber
bereits von Vorrichtungen mit zwangssynchronisierten Fliehgewichten bekannt, so
daß auf eine weitergehende Beschreibung verzichtet wird.Two schematically illustrated
Die Fliehgewichte 1, die Drehachsen 2 und die Antriebsmotoren sind jeweils mittels
Stützen 3 mit einem gemeinsamen Träger 4 verbunden. Der Träger 4 ist eine relativ
dicke Stahlplatte und sollte so verwindungssteif wie möglich ausgeführt werden.The
Die Stützen 3 sind auf dem Träger 4 festgeschweißt oder festgeschraubt und bilden
mit dem Träger 4 ebenfalls eine möglichst steife Konstruktion.The
Der Träger 4 ist an zwei seiner Stirnseiten von eine Halterung bildenden Halterungseinheiten
5a und 5b gehalten, die wiederum an einer Konsole 6 festgeschweißt sind,
Bei anderen Ausführungsformen sind die Halterungseinheiten nicht mit der Konsole
verschweißt, sondern verschraubt. Die Halterungseinheiten 5a und 5b übergreifen
hakenartig den Träger 4, wobei zwischen dem Träger 4 und den Halterungseinheiten
5a, 5b Federelemente 7 eingelegt sind. Die Federelemente 7 können z.B. aus Gummi
oder aus elastischem Kunststoff bestehen und erforderlichenfalls auch Dämpfungseigenschaften
aufweisen.The
In der Figur ist gezeigt, daß zwischen den Stirnseiten des Trägers 4 und den Halterungseinheiten
5a, 5b jeweils ein Spalt 8 ausgebildet ist. Dieser Spalt 8 ermöglicht
es, daß sich der Träger mit den an ihm befestigten Unwuchteinheiten beim Anlaufen
der Fliehgewichte 1 in - bezüglich Fig. 1 - Horizontalrichtung geringfügig bewegen
kann, was für die Synchronisierung der Fliehgewichte 1 erforderlich ist. Der Spalt 8
kann bei einer anderen Ausführungsform ebenfalls durch ein Federelement ausgefüllt
sein, um zu vermeiden, daß der Träger 4 direkt auf die Halterungseinheiten 5a,
5b aufschlägt.In the figure it is shown that between the end faces of the
Zum Erzeugen der gerichteten Schwingung werden die Fliehgewichte 1 durch die Antriebsmotoren
in gegensinnige Drehbewegung bei im wesentlichen gleicher Drehzahl
gebracht. Da ihr Produkt aus Masse der Unwucht und Radius des Unwuchtschwerpunkts
im wesentlichen gleich ist, sind auch die sich durch die Rotation ergebenden
Fliehkräfte im wesentlichen gleich. Aufgrund der gegensinnigen Drehung heben sich
die - in bezug auf Fig. 1 gesehen - Horizontalkomponenten der Fliehkräfte gegenseitig
auf, während sich die in Pfeilrichtung 9 gerichteten Vertikalkomponenten der Fliehkräfte
addieren und somit eine gerichtete Schwingung in Pfeilrichtung 9 erzeugen.
Die senkrecht zu einer durch die Drehachsen 2 aufgespannten Ebene stehende, gerichtete
Schwingung wird über den starren Träger 4 und die Federelemente 7 auf die
Konsole 6 übertragen, wo sie in der gewünschten Weise genutzt werden kann.To generate the directional vibration, the
Die Konsole 6 kann bei Verwendung der Vorrichtung auf einer Struktur oder an einem
Arbeitsgerät befestigt werden, um die gerichtete Schwingung in der gewünschten
Weise einzuleiten. Ebenfalls ist es möglich, daß die Konsole 6 bereits Teil der anzuregenden
Struktur bzw. des Arbeitsgeräts ist. Zum Beispiel kann die Konsole 6 Bestandteil
einer Vibrationsplatte zur Bodenverdichtung oder einer Schalungshaut eines
Rütteltischs zur Betonverdichtung sein.The
Selbstverständlich kann die Vorrichtung nicht nur bei dem genannten Rütteltisch oder der Vibrationsplatte eingesetzt werden, sondern auch bei jeder anderen Vorrichtung, bei der gerichtete Schwingungen erforderlich sind.Of course, the device can not only with the aforementioned vibrating table or the vibrating plate, but also with any other device, where directional vibrations are required.
Die in der Figur gezeigte Ausführungsform weist zwei Halterungseinheiten 5a, 5b
auf. Bei einer kleineren Ausführungsform der Erfindung ist es auch möglich, den
Träger 4 durch nur eine Halterungseinheit an der Konsole 6 zu befestigen.The embodiment shown in the figure has two
Claims (9)
- Device for producing directed vibrations, havingwherein the holding device (5a, 5b) has at least one spring element (7) to transmit the movement of the carrier (4) in the direction of the directed vibration (9) and in the direction perpendicular to the directed vibration (9) and perpendicular to the rotational axes (2) of the centrifugal weights (1),at least two centrifugal weights (1) with essentially the same m * r, which can be rotationally driven at essentially the same rotational speed in opposite directions about mutually parallel axes (2);a substantially rigid carrier (4) on which the at least two centrifugal weights are rotatably mounted; and havinga bracket (6) to which the carrier can be attached by means of a holding device (5a, 5b) in such a way that the carrier can move relative to the bracket,
characterised in thatin each case a drive for a centrifugal weight (1) is disposed on the carrier (4);the centrifugal weights (1) can be driven independently of each other, and thatthe rigidity of the spring element (7) or spring elements (7) is adapted to the rigidity of the carrier (4). - Device according to claim 1, characterised in that the carrier (4) can move relative to the bracket (6) in the direction (9) of the directed vibration to be produced and in a direction perpendicular to the vibration direction (9) and perpendicular to the rotational axes (2) of the centrifugal weights (1).
- Device according to claim 1 or 2, characterised in that the vibration to be produced is directed perpendicular to a plane extending through the rotational axes (2) of the centrifugal weights (1).
- Device according to one of the preceding claims, characterised in that the holding device (5a, 5b) has two holding units (5a, 5b) attached to the bracket (6), between which the carrier (4) is displaceably received.
- Device according to claim 4, characterised in that each of the holding units (5a, 5b) has a spring element (7) into which the carrier (4) is inserted.
- Device according to one of the preceding claims, characterised in that the centrifugal weights (1) are each divided in half and are formed with a respective drive motor disposed therebetween.
- Device according to one of the preceding claims, characterised in that the bracket (6) is a component of a structure into which the directed vibrations can be introduced.
- Device according to claim 7, characterised in that the structure is a jolting table or a vibration plate.
- Use of a device according to one of claims 1 to 8 as an external jolter on a jolting table or as a vibration exciter on a vibration plate.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE29708118U | 1997-05-05 | ||
| DE29708118 | 1997-05-05 | ||
| DE19741413A DE19741413C2 (en) | 1997-05-05 | 1997-09-19 | Device for generating directed vibrations |
| DE19741413 | 1997-09-19 | ||
| PCT/EP1998/002647 WO1998050171A1 (en) | 1997-05-05 | 1998-05-05 | Device for generating directed vibrations |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0980292A1 EP0980292A1 (en) | 2000-02-23 |
| EP0980292B1 true EP0980292B1 (en) | 2002-10-30 |
Family
ID=26040138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP98925536A Expired - Lifetime EP0980292B1 (en) | 1997-05-05 | 1998-05-05 | Device for generating directed vibrations |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US6263750B1 (en) |
| EP (1) | EP0980292B1 (en) |
| JP (1) | JP3919827B2 (en) |
| WO (1) | WO1998050171A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2881516B1 (en) | 2013-12-03 | 2016-08-31 | BOMAG GmbH & Co. OHG | Road roller |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE513571C2 (en) * | 1999-03-18 | 2000-10-02 | Ulf Bertil Andersson | Apparatus for generating mechanical vibrations |
| DE10145825B4 (en) * | 2001-09-13 | 2005-11-17 | Institut für Fertigteiltechnik und Fertigbau Weimar e.V. | Arrangement for compaction and shaping of mixtures |
| US7188993B1 (en) * | 2003-01-27 | 2007-03-13 | Harold W Howe | Apparatus and method for resonant-vibratory mixing |
| DE10317160A1 (en) * | 2003-04-14 | 2004-11-18 | Wacker Construction Equipment Ag | System and method for automated soil compaction |
| JP2006194011A (en) * | 2005-01-14 | 2006-07-27 | Kokudo Sogo Kensetsu Kk | Vibration generator for casing pipe |
| CN1947864B (en) * | 2005-10-14 | 2010-09-29 | 深圳富泰宏精密工业有限公司 | Vibration device |
| WO2008088321A1 (en) | 2007-01-12 | 2008-07-24 | Howe Harold W | Resonant-vibratory mixing |
| WO2008089175A1 (en) * | 2007-01-17 | 2008-07-24 | Brookstone Purchasing, Inc. | Vibration apparatus and motor assembly therefore |
| US7816415B2 (en) * | 2007-07-17 | 2010-10-19 | Inentec Llc | Method and apparatus for synthesizing hydrocarbons using sonic mixing and solid catalysts |
| US8905624B1 (en) | 2009-08-20 | 2014-12-09 | Harold W. Howe | Control of vibratory/oscillatory mixers |
| US8573829B2 (en) * | 2011-04-20 | 2013-11-05 | Timothy J. Gordon | Animal feed mechanism |
| US10457476B2 (en) * | 2016-02-10 | 2019-10-29 | Vibrafloor Sas | Vibratory floor with controlled atmosphere, for cohesive products |
| RU2689896C1 (en) * | 2018-03-12 | 2019-05-29 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Оренбургский государственный аграрный университет" | Unbalance vibration exciter |
| US10767725B2 (en) * | 2018-07-25 | 2020-09-08 | Denso International America, Inc. | Amplitude-modulating vibrator for predictive maintenance modeling |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2531706A (en) | 1946-08-06 | 1950-11-28 | Vibro Plus Corp | Vibrating device for a directed vibratory effect by means of rotatable vibratory members |
| US3203264A (en) * | 1961-08-11 | 1965-08-31 | Rex Chainbelt Inc | Shear spring guides for vibratory exciters |
| US3468418A (en) * | 1967-06-21 | 1969-09-23 | Adamson Stephens Mfg Co | Natural frequency vibrating screen |
| DE1800588A1 (en) | 1968-10-02 | 1970-06-11 | Bosch Gmbh Robert | Oscillator driven by at least one unbalance exciter |
| US3703236A (en) * | 1970-07-31 | 1972-11-21 | Fmc Corp | Vibrator mounting |
| GB1435499A (en) | 1972-06-23 | 1976-05-12 | Secretary Industry Brit | Vibratory impact generators |
| US4218929A (en) * | 1977-12-29 | 1980-08-26 | Syn-Energy, Inc. | Vibratory device for feeders and the like |
| GB2103333A (en) | 1981-08-03 | 1983-02-16 | Richard Peter Bernard Davis | Improvements in vibrators |
| US5056244A (en) * | 1989-12-01 | 1991-10-15 | Bryan Jr John F | Digging chain vibratory system |
| DE19634991A1 (en) | 1995-08-31 | 1997-03-06 | Hubert Bald | Vibratory compacting system in concrete-block-making machine |
-
1998
- 1998-05-05 EP EP98925536A patent/EP0980292B1/en not_active Expired - Lifetime
- 1998-05-05 JP JP54773198A patent/JP3919827B2/en not_active Expired - Fee Related
- 1998-05-05 US US09/402,173 patent/US6263750B1/en not_active Expired - Lifetime
- 1998-05-05 WO PCT/EP1998/002647 patent/WO1998050171A1/en active IP Right Grant
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2881516B1 (en) | 2013-12-03 | 2016-08-31 | BOMAG GmbH & Co. OHG | Road roller |
| EP2881516B2 (en) † | 2013-12-03 | 2020-03-25 | BOMAG GmbH & Co. OHG | Road roller |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3919827B2 (en) | 2007-05-30 |
| EP0980292A1 (en) | 2000-02-23 |
| JP2001524023A (en) | 2001-11-27 |
| WO1998050171A1 (en) | 1998-11-12 |
| US6263750B1 (en) | 2001-07-24 |
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