EP1163409B1 - Poker vibrator with frequency converter - Google Patents
Poker vibrator with frequency converter Download PDFInfo
- Publication number
- EP1163409B1 EP1163409B1 EP00912496A EP00912496A EP1163409B1 EP 1163409 B1 EP1163409 B1 EP 1163409B1 EP 00912496 A EP00912496 A EP 00912496A EP 00912496 A EP00912496 A EP 00912496A EP 1163409 B1 EP1163409 B1 EP 1163409B1
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- EP
- European Patent Office
- Prior art keywords
- housing
- frequency converter
- vibrator
- switch
- plug
- 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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- 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
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
- E04G21/06—Solidifying concrete, e.g. by application of vacuum before hardening
- E04G21/08—Internal vibrators, e.g. needle vibrators
Definitions
- the invention relates to internal vibrators according to the preambles of claims 1 and 10.
- Such internal vibrators are used for compacting fresh concrete, wherein a shaker body or housing is attached to a protective tube, in which an imbalance is rotationally driven by an electric motor.
- an electric motor In order to generate a form suitable for the fresh concrete compaction frequency of the motor at a very high speed must, for example, 12,000 min -1, turning, which requires over the usual mains frequency increased electrical frequency.
- To provide the increased electrical frequency of the electric motor is preceded by a frequency converter, which increases the mains frequency of 50 hertz, for example, to 200 hertz.
- the switch housing has to be slightly enlarged, which can be detrimental to its hatchability and off-road capability on the site.
- the slightly enlarged switch housing will get stuck to concrete reinforcements.
- the switch housing with the integrated frequency converter a considerable weight, so that the constant pulling back of the switch housing at work can be cumbersome.
- US Pat. No. 5,202,612 discloses an internal vibrator in which an electric motor arranged in a vibrator housing is supplied with current of an electrical frequency which differs from a mains frequency via an electrical supply.
- the electric supply cable forming on the one hand a switch and on the other hand provided a separately arranged from the switch frequency converter.
- GB-A-2 279 184 a mains plug is described in which a switch for interrupting the power supply is integrated.
- Post-published EP-A-0 916 785 (Art. 54 (3) EPC) describes a concrete compacting vibrator in which a frequency converter is housed in a housing. Three-phase sockets are mounted on the housing, to which an electrical connection line to a vibrating bottle can be connected.
- the invention has for its object to provide an internal vibrator, which is even easier to handle in practice and in particular improves the hatchability and the weight to be moved by the operator is reduced.
- the arrangement of components of the frequency converter at certain points in the internal vibrator offers the possibility to install the components targeted where they can be accommodated particularly appropriate. So it is particularly very advantageous if a power generating a lot of heat generating power unit is housed in the immersed in the concrete vapors Haittelgephaseuse, because thereby a particularly effective cooling is possible.
- the switch is arranged in a separate switch housing.
- the switch can also be integrated in the plug housing, in the protective tube or in the vibrator housing.
- the independent claim 10 defines an embodiment in which at least a part of the components of the frequency converter is arranged in the protective tube and this part of the components is not integrated in the switch housing. This makes it possible with a z. B. from EP 0 604 723 known internal vibrators to remove at least a portion of the components of the frequency converter from the switch housing described therein and to arrange elsewhere in the protective tube. As a result, the switch housing can be streamlined, whereby the slippability of the internal vibrator is improved.
- FIGURE shows an internal vibrator according to the invention in perspective view.
- a vibrating housing 1 also referred to as a vibrating bottle
- an electric motor not shown, is housed, which rotatably drives an imbalance serving as a vibration generating device at high speed.
- the vibrating housing 1 to be immersed in the still liquid concrete is set in vibration, whereby the desired compaction effect can be achieved in the concrete.
- the vibrator housing 1 is attached on one side to a protective tube 2, which can be up to several meters (for example, 6 meters) and is held in operation by the operator. Therefore, the protective tube 2 also serves as a service hose.
- a switch housing 3 which is also referred to as a switchboard and serves here as a coupling piece, is mounted, which carries a switch 4.
- electrical leads 5 can be interrupted or closed in a known manner to the electric motor in the vibrator housing 1.
- the electrical leads 5 extend inside the protective tube. 2
- switch housing 3 From the other side of the switch housing 3, a rubber grommet 6, inside which an electric cable 7 extends, which finally ends at a switch housing 9 carrying a plug 8 extends.
- the function of the coupling piece (here: switch housing 3) is to couple the stable protective tube 2 with the electric cable 7.
- the electric motor must rotate at a very high speed and therefore requires an electrical frequency which is above the mains frequency for its operation.
- Common frequencies are in the range of 200 hertz, which is four times the mains frequency.
- This embodiment has the advantage that the switch housing 3 occupies a very small, handy and slip-capable form, so that it can be easily passed by the operator during operation of the internal vibrator to the reinforcements. Furthermore, the heat sink volume of the electronic frequency converter can be significantly reduced because the existing metal vibrator housing 1 dissipates heat from the frequency converter and passes on to the concrete vat, which ensures a very efficient cooling. Furthermore, the protective tube 2 no longer needs to be shielded because it only supplies mains power. Finally, the winding temperature of the motor can be detected by means of a temperature sensor and read back as an operating variable. Upon provision of a corresponding control, the frequency converter can be controlled as a function of the temperature.
- the frequency converter is completely integrated into the connector housing 9 carrying the plug 8.
- This variant requires an enlargement of the plug housing 9 compared to conventional plug housings, but this does not lead to disadvantages for the operation of the internal vibrator, since the plug 8 is usually inserted into a stationary cable drum or socket. Therefore, during operation of the internal vibrator, the operator rarely has to raise and move the plug housing 9 with the integrated frequency converter.
- the vibrator housing 1 and the switch housing 3 are not changed. Since now the increased frequency is already available from the connector housing 9, the electric cable 7 and the electrical leads 5 in the protective tube 2 are shielded. Since the cooling of the frequency converter takes place in the connector housing 9 substantially by air, this embodiment is advantageously suitable for small internal vibrators with low power consumption.
- the vibrator housing 1 with the electric motor, the frequency converter, the protective tube 2 and the electric cable 7 by a suitable electronics on the frequency converter to short circuit. Earth fault and fault current to monitor and protect it. In case of damage to the protective hose 2 with the leads 5 or the electric cable 7, the power supply for the internal vibrator interrupts immediately.
- the components of the frequency converter are distributed according to their best suitability in the internal vibrator, when the frequency converter consists of several components.
- a power unit and a processor of the frequency converter are installed in the Rüttelgephaseuse 1, where optimum cooling by the Betonschlempe and serving as a heat sink Studttelgephaseuse 1 is possible.
- a rectifier and a switching power supply of the frequency converter are integrated into the connector housing 9. Any required capacitors, in particular DC intermediate circuit capacitors can be integrated into the protective tube 2 of the internal vibrator.
- a non-illustrated fourth embodiment of the invention is characterized in that the frequency converter is indeed arranged in the protective tube and the electric cable coupling coupling piece, however, the switch housing receiving switch housing is arranged separately from the coupling piece.
- This variant allows numerous design variants to optimize weight distribution and off-road capability.
- the fourth embodiment is developed such that the switch housing is integrated into the connector housing 9.
- a likewise not shown in the figure sixth embodiment is characterized in that at least a part of the components of the frequency converter is arranged in a provided between the switch housing and the power plug converter housing. Also, the frequency converter and the switch housing are spatially separated from each other to obtain the advantageous design options.
- the described variants are also suitable for internal vibrators with a short protective tube, for example rod or hand-held vibrators.
- a short protective tube for example rod or hand-held vibrators.
- the operation is not via the protective tube, but by means of a handle, which is summarized, for example, with the switch housing 3.
- the switch is integrated into the protective tube. Also can be dispensed with attached to the end of the protective tube 2 coupling piece, if there is not a switch or a frequency converter must be accommodated. Instead, the end of the protective tube 2 may leak in a rubber grommet 6 similar spout and open into the electric cable 7. It is also possible to vulcanize the end of the protective tube 2 such that it passes into the electric cable 7. With simultaneous integration of the switch and the frequency converter in the plug housing 9, the protective tube 2 or the vibrator housing 1, an internal vibrator is provided with smooth outer contours without bulges, which accordingly has an excellent hatchability.
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Description
Die Erfindung betrifft Innenrüttler gemäß den Oberbegriffen der Patentansprüche 1 und 10.The invention relates to internal vibrators according to the preambles of claims 1 and 10.
Derartige Innenrüttler dienen zum Verdichten von Frischbeton, wobei an einem Schutzschlauch ein Rüttelkörper bzw. -gehäuse angebracht ist, in dem eine Unwucht durch einen Elektromotor drehend angetrieben wird. Zur Erzeugung einer für den Frischbeton geeigneten Verdichtungsfrequenz muß der Motor mit sehr hoher Drehzahl, zum Beispiel 12.000 min-1, drehen, was eine gegenüber der üblichen Netzfrequenz erhöhte elektrische Frequenz erfordert. Zur Bereitstellung der erhöhten elektrischen Frequenz ist dem Elektromotor ein Frequenzumformer vorgeschaltet, der die Netzfrequenz von 50 Hertz zum Beispiel auf 200 Hertz erhöht.Such internal vibrators are used for compacting fresh concrete, wherein a shaker body or housing is attached to a protective tube, in which an imbalance is rotationally driven by an electric motor. In order to generate a form suitable for the fresh concrete compaction frequency of the motor at a very high speed must, for example, 12,000 min -1, turning, which requires over the usual mains frequency increased electrical frequency. To provide the increased electrical frequency of the electric motor is preceded by a frequency converter, which increases the mains frequency of 50 hertz, for example, to 200 hertz.
Es sind Innenrüttler bekannt, bei denen der Schutzschlauch gleichzeitig als Bedienungsschlauch ausgebildet ist und eine Länge von mehreren Metern aufweist. An dem dem Rüttelgehäuse gegenüber liegenden Ende des Schutzschlauches ist ein Schaltergehäuse befestigt, welches einen Netzschalter trägt. Von dem Schaltergehäuse geht ein Elektrokabel zu einem Stecker, der in einen konventionellen Frequenzumrichter einsteckbar ist. Die sich durch den sehr sperrigen und schwer zu handhabenden separaten Frequenzumrichter ergebenden Nachteile für den Betrieb eines derartigen Innenrüttlers haben zu der Entwicklung eines Innenrüttlers geführt, bei dem der Frequenzumformer mit dem Schalter zu einem miniaturisierten Schaltergehäuse zusammengefaßt ist. Ein derartiger Innenrüttler wird in der EP 0 604 723 beschrieben und hat sich in der Praxis hervorragend bewährt. Insbesondere durch den Wegfall des separaten Frequenzumformers läßt sich das Gerät im Betrieb sehr einfach handhaben.There are known internal vibrators, in which the protective tube is simultaneously formed as an operating hose and has a length of several meters. At the end of the protective tube opposite the vibrator housing a switch housing is fastened, which carries a power switch. From the switch housing, an electric cable goes to a plug that can be plugged into a conventional frequency converter. The resulting by the very bulky and difficult to handle separate frequency converter disadvantages for the operation of such a Innenrüttlers have led to the development of an internal vibrator, in which the frequency converter is combined with the switch to a miniaturized switch housing. Such an internal vibrator is described in EP 0 604 723 and has proven to be excellent in practice. In particular, by eliminating the separate frequency converter, the device can be handled very easily in operation.
Jedoch mußte für die Integration des Frequenzumformers in das Schaltergehäuse zwangsläufig das Schaltergehäuse etwas vergrößert werden, was für seine Schlupffähigkeit und Geländegängigkeit auf der Baustelle nachteilig sein kann. Insbesondere besteht die Möglichkeit, daß das etwas vergrößerte Schaltergehäuse an Betonarmierungen hängen bleibt. Außerdem weist das Schaltergehäuse mit dem integrierten Frequenzumformer ein nicht unerhebliches Gewicht auf, so daß das ständige Hinterherziehen des Schaltergehäuses bei der Arbeit beschwerlich sein kann.However, for the integration of the frequency converter in the switch housing inevitably the switch housing has to be slightly enlarged, which can be detrimental to its hatchability and off-road capability on the site. In particular, there is the possibility that the slightly enlarged switch housing will get stuck to concrete reinforcements. In addition, the switch housing with the integrated frequency converter a considerable weight, so that the constant pulling back of the switch housing at work can be cumbersome.
Aus der US-A-5,202,612 ist ein Innenrüttler bekannt, bei dem ein in einem Rüttelgehäuse angeordneter Elektromotor über eine Elektrozuführung mit Strom einer elektrischen Frequenz versorgt wird, die von einer Netzfrequenz abweicht. Dazu ist in dem die Elektrozuführung bildenden Kabel zum einen ein Schalter und zum anderen ein separat von dem Schalter angeordneter Frequenzumformer vorgesehen.US Pat. No. 5,202,612 discloses an internal vibrator in which an electric motor arranged in a vibrator housing is supplied with current of an electrical frequency which differs from a mains frequency via an electrical supply. For this purpose, in which the electric supply cable forming on the one hand a switch and on the other hand provided a separately arranged from the switch frequency converter.
In der GB-A-2 279 184 ist ein Netzstecker beschrieben, in den ein Schalter zum Unterbrechen der Stromzufuhr integriert ist.In GB-A-2 279 184 a mains plug is described in which a switch for interrupting the power supply is integrated.
Aus der DE 197 22 107 ist eine Kabeltrommel mit einem integrierten Frequenzumformer bekannt. In eine Steckdose der Kabeltrommel kann ein Netzstecker eines Innenrüttlers eingesteckt werden, der mit einer durch den Frequenzumformer erzeugten Frequenz versorgt werden muss.From DE 197 22 107 a cable drum with an integrated frequency converter is known. A mains plug of an internal vibrator, which must be supplied with a frequency generated by the frequency converter, can be plugged into a socket of the cable drum.
In der nachveröffentlichten EP-A-0 916 785 (Art. 54(3) EPÜ) wird ein Vibrator zur Beton-Verdichtung beschrieben, bei dem ein Frequenzumformer in einem Gehäuse untergebracht ist. An dem Gehäuse sind Drehstromsteckdosen montiert, an denen eine elektrische Verbindungsleitung zu einer Rüttelflasche anschließbar ist.Post-published EP-A-0 916 785 (Art. 54 (3) EPC) describes a concrete compacting vibrator in which a frequency converter is housed in a housing. Three-phase sockets are mounted on the housing, to which an electrical connection line to a vibrating bottle can be connected.
Der Erfindung liegt die Aufgabe zugrunde, einen Innenrüttler anzugeben, der in der Praxis noch besser handhabbar ist und bei dem insbesondere die Schlupffähigkeit verbessert und das vom Bediener zu bewegende Gewicht verringert ist.The invention has for its object to provide an internal vibrator, which is even easier to handle in practice and in particular improves the hatchability and the weight to be moved by the operator is reduced.
Die erfindungsgemäße Lösung wird in den Patentansprüchen 1 und 10 angegeben. Vorteilhafte Weiterentwicklungen der Erfindung sind den ab-hängigen Ansprüchen zu entnehmen.The solution according to the invention is specified in claims 1 and 10. Advantageous further developments of the invention can be found in the dependent claims.
Ein erfindungsgemäßer Innenrüttler ist gemäß Patentanspruch 1 dadurch gekennzeichnet; daß wenigstens ein Teil der Bauelemente des Frequenzumformers in dem Rüttelgehäuse oder dem Steckergehäuse angeordnet ist. Davon werden im wesentlichen drei Ausführungsformen erfaßt:
- sämtliche Bauelemente des Frequenzumformers sind in dem Rüttelgehäuse integriert;
- sämtliche Bauelemente des Frequenzumformers sind in dem Steckergehäuse integriert; oder
- die Bauelemente des Frequenzumformers sind an verschiedenen Orten des Innenrüttlers eingebaut.
- All components of the frequency converter are in the vibrator housing integrated;
- All components of the frequency converter are integrated in the connector housing; or
- The components of the frequency converter are installed at different locations of the internal vibrator.
Daraus ergeben sich für den Aufbau und für die Bedienung des Innenrüttlers zahlreiche Vorteile, die später noch bei der Beschreibung der Ausführungsformen detaillierter erläutert werden. Von Bedeutung ist dabei, daß der Frequenzumformer nicht mehr in das Schaltergehäuse integriert wird, woraus sich der Vorteil ergibt, daß dieses aufgrund seines geringen Gewichtes und seiner geringen Abmessungen wieder sehr leicht und "schlüpfrig", d.h. schlupffähig wird. Für den Betrieb des Innenrüttlers ergibt sich damit der Vorteil, daß das Schaltergehäuse bei der Arbeit an dem Bedienungsschlauch leicht hinterhergezogen werden kann.This results in the construction and operation of the internal vibrator numerous advantages, which will be explained in more detail later in the description of the embodiments. Of importance is that the frequency converter is no longer integrated into the switch housing, resulting in the advantage that this again very light and "slippery" due to its low weight and small dimensions, i. becomes capable of slipping. For the operation of the internal vibrator, this results in the advantage that the switch housing can be easily pulled behind when working on the operating hose.
Die Anordnung von Bauelementen des Frequenzumformers an bestimmten Stellen im Innenrüttler bietet andererseits die Möglichkeit, die Komponenten zielgerichtet dort einzubauen, wo sie besonders zweckmäßig untergebracht werden können. So ist es insbesondere sehr vorteilhaft, wenn ein im Betrieb viel Wärme erzeugendes Leistungsteil in dem in die Betonschlempe eintauchenden Rüttelgehäuse untergebracht ist, weil dadurch eine besonders effektive Kühlung möglich ist.The arrangement of components of the frequency converter at certain points in the internal vibrator on the other hand offers the possibility to install the components targeted where they can be accommodated particularly appropriate. So it is particularly very advantageous if a power generating a lot of heat generating power unit is housed in the immersed in the concrete vapors Rüttelgehäuse, because thereby a particularly effective cooling is possible.
Es ist für eine Variante der Erfindung nicht erforderlich, daß der Schalter in einem eigenen Schaltergehäuse angeordnet ist. Der Schalter kann auch in dem Steckergehäuse, im Schutzschlauch oder in dem Rüttelgehäuse integriert sein.It is not necessary for a variant of the invention that the switch is arranged in a separate switch housing. The switch can also be integrated in the plug housing, in the protective tube or in the vibrator housing.
Der unabhängige Patentanspruch 10 definiert eine Ausführungsform, bei der wenigstens ein Teil der Bauelemente des Frequenzumformers in dem Schutzschlauch angeordnet ist und dieser Teil der Bauelemente nicht in das Schaltergehäuse integriert ist. Dies ermöglicht es, bei einem z. B. aus der EP 0 604 723 bekannten Innenrüttler wenigstens einen Teil der Bauelemente des Frequenzumformers aus dem dort beschriebenen Schaltergehäuse zu entfernen und an anderer Stelle im Schutzschlauch anzuordnen. Dadurch lässt sich das Schaltergehäuse stromlinienförmiger gestalten, wodurch die Schlupffähigkeit des Innenrüttlers verbessert wird.The independent claim 10 defines an embodiment in which at least a part of the components of the frequency converter is arranged in the protective tube and this part of the components is not integrated in the switch housing. This makes it possible with a z. B. from EP 0 604 723 known internal vibrators to remove at least a portion of the components of the frequency converter from the switch housing described therein and to arrange elsewhere in the protective tube. As a result, the switch housing can be streamlined, whereby the slippability of the internal vibrator is improved.
Diese und weitere Vorteile und Merkmale werden nachfolgend anhand von Beispielen unter Zuhilfenahme der begleitenden Figur näher erläutert. Die einzige Figur zeigt einen erfindungsgemäßen Innenrüttler in Perspektivansicht.These and other advantages and features will be explained in more detail by way of examples with the aid of the accompanying figure. The single FIGURE shows an internal vibrator according to the invention in perspective view.
In einem auch als Rüttelflasche bezeichneten Rüttelgehäuse 1 ist ein nicht dargestellter Elektromotor untergebracht, der eine als Schwingungserzeugungseinrichtung dienende Unwucht drehend mit hoher Drehzahl antreibt.In a vibrating housing 1, also referred to as a vibrating bottle, an electric motor, not shown, is housed, which rotatably drives an imbalance serving as a vibration generating device at high speed.
Dadurch wird das in den noch flüssigen Beton einzutauchende Rüttelgehäuse 1 in Schwingungen versetzt, wodurch die gewünschte Verdichtungswirkung im Beton erzielt werden kann.As a result, the vibrating housing 1 to be immersed in the still liquid concrete is set in vibration, whereby the desired compaction effect can be achieved in the concrete.
Das Rüttelgehäuse 1 ist an einer Seite an einem Schutzschlauch 2 befestigt, der bis zu mehreren Metern (zum Beispiel 6 Meter) sein kann und im Betrieb vom Bediener gehalten wird. Daher dient der Schutzschlauch 2 auch als Bedienungsschlauch.The vibrator housing 1 is attached on one side to a protective tube 2, which can be up to several meters (for example, 6 meters) and is held in operation by the operator. Therefore, the protective tube 2 also serves as a service hose.
Am anderen Ende des Schutzschlauches 2 ist ein auch als Schalterei bezeichnetes und hier als Kopplungsstück dienendes Schaltergehäuse 3 angebracht, das einen Schalter 4 trägt. Über den Schalter 4 können in bekannter Weise elektrische Zuleitungen 5 zu dem Elektromotor im Rüttelgehäuse 1 unterbrochen bzw. geschlossen werden. Die elektrischen Zuleitungen 5 verlaufen im Inneren des Schutzschlauches 2.At the other end of the protective tube 2, a
Von der anderen Seite des Schaltergehäuses 3 erstreckt sich eine Gummitülle 6, in deren Innerem ein Elektrokabel 7 verläuft, das schließlich an einem einen Stecker 8 tragenden Schaltergehäuse 9 endet. Die Funktion des Kopplungsstückes (hier: Schaltergehäuse 3) besteht darin, den stabilen Schutzschlauch 2 mit dem Elektrokabel 7 zu koppeln.From the other side of the
Wie bereits ausgeführt, muß der Elektromotor mit sehr hoher Drehzahl drehen und erfordert daher für seinen Betrieb eine elektrische Frequenz, die über der Netzfrequenz liegt. Üblich sind dabei Frequenzen im Bereich von 200 Hertz, was dem Vierfachen der Netzfrequenz entspricht.As already stated, the electric motor must rotate at a very high speed and therefore requires an electrical frequency which is above the mains frequency for its operation. Common frequencies are in the range of 200 hertz, which is four times the mains frequency.
Um die gewünschte Frequenz zu erreichen, ist es aus dem Stand der Technik bekannt, den Netzstrom in einem Frequenzumformer zu wandeln. Dies war zum einen dadurch möglich, daß der Stecker 8 in eine separate Frequenzumformeinrichtung eingesteckt werden konnte. Zum anderen ist es bekannt, daß Schaltergehäuse 3 zu vergrößern und dort neben dem Schalter 4 auch den Frequenzumformer vorzusehen. Beide Ausführungen sind jedoch mit Nachteilen versehen, die durch die Erfindung gelöst werden.In order to achieve the desired frequency, it is known in the art to convert the mains current in a frequency converter. This was on the one hand possible because the plug 8 could be plugged into a separate Frequenzumformeinrichtung. On the other hand, it is known that switch
Bei einer ersten Ausführungsform des erfindungsgemäßen Innenrüttlers werden sämtliche Bauelemente des elektronischen Hybrid-Frequenzumformers in das Rüttelgehäuse 1 integriert und direkt an dem Elektromotor angebaut. Der Netzstrom wird über den Stecker 8, das Elektrokabel 7, den Schalter 4 und die elektrischen Zuleitungen 5 an das Rüttelgehäuse 1 geführt. Das Elektrokabel 7 und die elektrischen Zuleitungen 5 bilden eine Elektrozuführung zwischen dem Stecker 8 und dem Elektromotor.In a first embodiment of the internal vibrator according to the invention all components of the electronic hybrid frequency converter integrated into the vibrator housing 1 and mounted directly on the electric motor. The mains power is passed through the plug 8, the electric cable 7, the switch 4 and the electrical leads 5 to the vibrator housing 1. The electric cable 7 and the
Diese Ausführungsform hat den Vorteil, daß das Schaltergehäuse 3 eine sehr kleine, handliche und schlupffähige Form einnimmt, so daß es im Betrieb des Innenrüttlers vom Bediener leicht an den Armierungen vorbeigeführt werden kann. Weiterhin kann das Kühlkörper-Volumen des elektronischen Frequenzumformers erheblich reduziert werden, da das aus Metall bestehende Rüttelgehäuse 1 Wärme von dem Frequenzumformer abführt und an die Betonschlempe weitergibt, was eine sehr effiziente Kühlung gewährleistet. Weiterhin muß der Schutzschlauch 2 nicht mehr abgeschirmt werden, da er lediglich Netzstrom zuführt. Schließlich läßt sich die Wicklungstemperatur des Motors mittels eines Temperatursensors erfassen und als Betriebsgröße rücklesen. Bei Bereitstellung einer entsprechenden Regelung kann der Frequenzumformer in Abhängigkeit von der Temperatur angesteuert werden.This embodiment has the advantage that the
Bei einer zweiten Ausführungsform der Erfindung wird der Frequenzumformer vollständig in das den Stecker 8 tragende Steckergehäuse 9 integriert.In a second embodiment of the invention, the frequency converter is completely integrated into the connector housing 9 carrying the plug 8.
Diese Variante erfordert eine Vergrößerung des Steckergehäuses 9 gegenüber üblichen Steckergehäusen, was jedoch nicht zu Nachteilen für den Betrieb des Innenrüttlers führt, da der Stecker 8 meist in eine ortsfeste Kabeltrommel bzw. Steckdose eingesteckt wird. Daher muß der Bediener im Betrieb des Innenrüttlers das Steckergehäuse 9 mit dem integrierten Frequenzumformer nur selten anheben und bewegen.This variant requires an enlargement of the plug housing 9 compared to conventional plug housings, but this does not lead to disadvantages for the operation of the internal vibrator, since the plug 8 is usually inserted into a stationary cable drum or socket. Therefore, during operation of the internal vibrator, the operator rarely has to raise and move the plug housing 9 with the integrated frequency converter.
Das Rüttelgehäuse 1 und das Schaltergehäuse 3 werden dabei nicht verändert. Da nunmehr die erhöhte Frequenz bereits ab dem Steckergehäuse 9 vorliegt, sind das Elektrokabel 7 und die elektrischen Zuleitungen 5 im Schutzschlauch 2 abzuschirmen. Da die Kühlung des Frequenzumformers im Steckergehäuse 9 im wesentlichen durch Luft erfolgt, eignet sich diese Ausführungsform vorteilhafterweise für kleine Innenrüttler mit kleiner Leistungsaufnahme.The vibrator housing 1 and the
Die Integration des Frequenzumformers in das Steckergehäuse 9 - zum Beispiel durch Integration mit einem Fehlerstromschutzschalter (FI-DI-Schalter) - ermöglicht eine besonders hohe Bediensicherheit. Zudem ist es möglich, das Rüttelgehäuse 1 mit dem Elektromotor, den Frequenzumformer, den Schutzschlauch 2 und das Elektrokabel 7 durch eine geeignete Elektronik am Frequenzumformer auf Kurzschluß. Erdschluß und Fehlerstrom zu überwachen und damit zu schützen. Bei Beschädigungen des Schutzschlauches 2 mit den Zuleitungen 5 oder des Elektrokabels 7 unterbricht die Stromzufuhr für den Innenrüttler sofort.The integration of the frequency converter in the connector housing 9 - for example, by integration with a residual current circuit breaker (FI-DI switch) - allows a particularly high operating safety. In addition, it is possible, the vibrator housing 1 with the electric motor, the frequency converter, the protective tube 2 and the electric cable 7 by a suitable electronics on the frequency converter to short circuit. Earth fault and fault current to monitor and protect it. In case of damage to the protective hose 2 with the
Bei der dritten Ausführungsform der Erfindung werden die Bauelemente des Frequenzumformers entsprechend ihrer besten Eignung in dem Innenrüttler verteilt, wenn der Frequenzumformer aus mehreren Bauelementen besteht. Das bedeutet, daß ein Leistungsteil und ein Prozessor des Frequenzumformers in dem Rüttelgehäuse 1 eingebaut werden, wo eine optimale Kühlung durch die Betonschlempe und das als Kühlkörper dienende Rüttelgehäuse 1 möglich ist. Ein Gleichrichter und ein Schaltnetzteil des Frequenzumformers werden in das Steckergehäuse 9 integriert. Eventuell erforderliche Kondensatoren, insbesondere Gleichstrom-Zwischenkreis-Kondensatoren lassen sich in den Schutzschlauch 2 des Innenrüttlers integrieren.In the third embodiment of the invention, the components of the frequency converter are distributed according to their best suitability in the internal vibrator, when the frequency converter consists of several components. This means that a power unit and a processor of the frequency converter are installed in the Rüttelgehäuse 1, where optimum cooling by the Betonschlempe and serving as a heat sink Rüttelgehäuse 1 is possible. A rectifier and a switching power supply of the frequency converter are integrated into the connector housing 9. Any required capacitors, in particular DC intermediate circuit capacitors can be integrated into the protective tube 2 of the internal vibrator.
Eine derart aufgelöste Bauweise ermöglicht ein minimales Bauvolumen und damit auch minimales Gewicht des Innenrüttlers. Das Schaltergehäuse 3, das nach wie vor nur den Schalter 4 trägt, bleibt klein und geländegängig. Durch die Kühlwirkung der Rüttelflasche 1 kann auf zusätzliche Kühlkörper-Volumina verzichtet werden. Durch die Erzeugung der höheren Frequenz im Rüttelgehäuse 1 selbst müssen der Schutzschlauch 2 und das Elektrokabel 7 nicht abgeschirmt werden.Such a resolved design allows a minimum construction volume and thus minimal weight of the internal vibrator. The
Eine nicht dargestellte vierte Ausführungsform der Erfindung ist dadurch gekennzeichnet, daß der Frequenzumformer zwar in das den Schutzschlauch und das Elektrokabel koppelnden Kopplungsstück angeordnet ist, jedoch das den Schalter aufnehmende Schaltergehäuse von dem Kopplungsstück getrennt angeordnet ist. Diese Variante ermöglicht zahlreiche Gestaltungsvarianten zur Optimierung von Gewichtsverteilung und Geländegängigkeit.A non-illustrated fourth embodiment of the invention is characterized in that the frequency converter is indeed arranged in the protective tube and the electric cable coupling coupling piece, however, the switch housing receiving switch housing is arranged separately from the coupling piece. This variant allows numerous design variants to optimize weight distribution and off-road capability.
Bei einer nicht dargestellten fünften Ausführungsform der Erfindung ist die vierte Ausführungsform derart weiterentwickelt, daß das Schaltergehäuse in das Steckergehäuse 9 integriert ist.In a not shown fifth embodiment of the invention, the fourth embodiment is developed such that the switch housing is integrated into the connector housing 9.
Eine ebenfalls in der Figur nicht dargestellte sechste Ausführungsform ist dadurch gekennzeichnet, daß wenigstens ein Teil der Bauelemente des Frequenzumformers in einem zwischen dem Schaltergehäuse und dem Netzstecker vorgesehenen Umformergehäuse angeordnet ist. Auch dadurch werden der Frequenzumformer und das Schaltergehäuse räumlich voneinander getrennt, um die vorteilhaften Gestaltungsmöglichkeiten zu erhalten.A likewise not shown in the figure sixth embodiment is characterized in that at least a part of the components of the frequency converter is arranged in a provided between the switch housing and the power plug converter housing. Also, the frequency converter and the switch housing are spatially separated from each other to obtain the advantageous design options.
Die beschriebenen Varianten eignen sich auch für Innenrüttler mit kurzem Schutzschlauch, zum Beispiel Stab- oder Handstockrüttler. Bei derartigen Rüttlern erfolgt die Bedienung nicht über den Schutzschlauch, sondern mittels eines Handgriffes, der zum Beispiel mit dem Schaltergehäuse 3 zusammengefaßt ist.The described variants are also suitable for internal vibrators with a short protective tube, for example rod or hand-held vibrators. In such vibrators, the operation is not via the protective tube, but by means of a handle, which is summarized, for example, with the
Weitere Varianten für die Anwendung der Erfindung sind möglich, indem der Schalter in den Schutzschlauch integriert wird. Ebenfalls kann auf das am Ende des Schutzschlauches 2 befestigte Kopplungsstück verzichtet werden, wenn dort nicht ein Schalter oder ein Frequenzumformer untergebracht werden muß. Statt dessen kann das Ende des Schutzschlauches 2 in einer der Gummitülle 6 ähnlichen Tülle auslaufen und in das Elektrokabel 7 münden. Ebenfalls ist es möglich, das Ende des Schutzschlauches 2 derart zu vulkanisieren, daß es in das Elektrokabel 7 übergeht. Bei gleichzeitiger Integration des Schalters und des Frequenzumformers in das Steckergehäuse 9, den Schutzschlauch 2 oder das Rüttelgehäuse 1 wird ein Innenrüttler mit glatten Außenkonturen ohne Ausbuchtungen geschaffen, der dementsprechend eine ausgezeichnete Schlupffähigkeit aufweist.Other variants for the application of the invention are possible by the switch is integrated into the protective tube. Also can be dispensed with attached to the end of the protective tube 2 coupling piece, if there is not a switch or a frequency converter must be accommodated. Instead, the end of the protective tube 2 may leak in a
Claims (12)
- Internal vibrator for compacting concrete, having- a vibrator housing (1) accommodating a vibration-producing device and an electric motor driving the vibration-producing device;- a protective tube (2) attached at one end to the vibrator housing (1) and receiving at least part of an electric supply (5, 7);- a mains plug (8) coupled to the electric supply (5, 7) and having a plug housing (9); and having- a frequency converter which feeds the electric motor, can be electrically coupled to the mains plug (8) via the electric supply (5, 7) and consists of one or several components, said frequency converter being used to produce an electrical frequency which deviates from a mains frequency;characterised in that at least some of the components of the frequency converter are disposed in the vibrator housing (1) or the plug housing (9).
- Internal vibrator as claimed in Claim 1, characterised in that the protective tube (2) is formed as an operating tube.
- Internal vibrator as claimed in Claim 1 or 2, characterised in that a switch (4) is disposed in the electric supply (5, 7) from the mains plug (8) to the electric motor.
- Internal vibrator as claimed in Claim 3, characterised in that the switch (4) is disposed in a switch housing (3).
- Internal vibrator as claimed in Claim 4, characterised in that the switch housing (3) is provided with an operating handle.
- Internal vibrator as claimed in Claim 3, characterised in that the switch is provided in the plug housing (9).
- Internal vibrator as claimed in Claim 1 or 2, characterised in that the frequency converter is disposed completely in the vibrator housing (1).
- Internal vibrator as claimed in Claim 1 or 2, characterised in that the frequency converter is disposed completely in the plug housing (9).
- Internal vibrator as claimed in any one of the preceding Claims, characterised in that at least one component selected from the following group appertains to the components of the frequency converter: switched mode mains power supply, rectifier, DC capacitor, power element, processor and cooling device.
- Internal vibrator for compacting concrete, having- a vibrator housing (1) accommodating a vibration-producing device and an electric motor driving the vibration-producing device;- a protective tube (2) attached at one end to the vibrator housing (1) and receiving at least part of an electric supply (5, 7);- a mains plug (8) coupled to the electric supply (5, 7) and having a plug housing (9);- a switch (4) which is disposed in the electric supply (5, 7) from the mains plug (8) to the electric motor and is disposed in a switch housing (3); and having- a frequency converter which feeds the electric motor, can be electrically coupled to the mains plug (8) via the electric supply (5, 7) and consists of one or several components, said frequency converter being used to produce an electrical frequency which deviates from a mains frequency;characterised in that at least some of the components of the frequency converter are disposed in the protective tube (2); and in that none of the components of the frequency converter are integrated into the switch housing (3).
- Internal vibrator as claimed in Claim 10, characterised in that the frequency converter is disposed completely in the protective tube (2).
- Internal vibrator as claimed in Claim 10 or 11, characterised in that the protective tube (2) is formed as an operating tube.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19913305 | 1999-03-24 | ||
| DE19913305A DE19913305C2 (en) | 1999-03-24 | 1999-03-24 | Internal vibrator with frequency converter |
| PCT/EP2000/001429 WO2000056999A1 (en) | 1999-03-24 | 2000-02-22 | Poker vibrator with frequency converter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1163409A1 EP1163409A1 (en) | 2001-12-19 |
| EP1163409B1 true EP1163409B1 (en) | 2006-10-25 |
Family
ID=7902222
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP00912496A Expired - Lifetime EP1163409B1 (en) | 1999-03-24 | 2000-02-22 | Poker vibrator with frequency converter |
Country Status (5)
| Country | Link |
|---|---|
| US (2) | US6619832B1 (en) |
| EP (1) | EP1163409B1 (en) |
| JP (1) | JP2002540322A (en) |
| DE (3) | DE19913305C2 (en) |
| WO (1) | WO2000056999A1 (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19913077C2 (en) * | 1999-03-23 | 2003-06-12 | Wacker Construction Equipment | Internal vibrator with measuring system |
| DE19913305C2 (en) * | 1999-03-24 | 2003-01-02 | Wacker Werke Kg | Internal vibrator with frequency converter |
| ES2163978B1 (en) * | 1999-06-14 | 2003-08-16 | Ind Techno Flex S A | VIBRATOR DEVICE FOR COMPACTING CONCRETE. |
| DE10101277B4 (en) * | 2001-01-12 | 2006-11-02 | Wacker Construction Equipment Ag | High-frequency internal vibrator with cooled electronic frequency converter |
| DE10124145C1 (en) * | 2001-05-17 | 2002-08-14 | Wacker Werke Kg | Internal vibrator for compacting concrete |
| EP1316655A1 (en) * | 2001-11-28 | 2003-06-04 | Industrias Techno-Flex, S.A. | Vibrating device for concrete compacting |
| ES2243124B1 (en) * | 2003-12-30 | 2006-07-16 | Hervisa, S.A. | VIBRATOR FOR CONCRETE COMPACTING. |
| US8092071B1 (en) | 2008-02-08 | 2012-01-10 | Robert Allan Baker | External vibratory grout consolidator for vertically reinforced concrete masonry |
| ES1073625Y (en) * | 2010-12-15 | 2011-04-07 | Ind Technoflex Sa | VIBRATOR DEVICE FOR COMPACT CONCRETE |
| US10696502B2 (en) * | 2017-05-09 | 2020-06-30 | William E HODGE | Method and apparatus to reduce volume occupied by dry particulate commodities during transportation or storage |
| DE102018118555A1 (en) * | 2018-07-31 | 2020-02-06 | Wacker Neuson Produktion GmbH & Co. KG | Portable drive system for an implement |
| DE102018118563A1 (en) * | 2018-07-31 | 2020-02-06 | Wacker Neuson Produktion GmbH & Co. KG | Internal vibrator with DC voltage supply |
| CN110242052A (en) * | 2019-05-30 | 2019-09-17 | 诸暨市辉煌五金有限公司 | Split Concrete Vibration Device |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2808238A (en) * | 1955-08-09 | 1957-10-01 | Master Vibrator Co | Concrete vibrator |
| US2966804A (en) * | 1959-03-05 | 1961-01-03 | Pacific Mercury Electronics In | Mechanical vibrator for use with fluids and semi-fluids |
| US3061278A (en) * | 1959-05-25 | 1962-10-30 | Dreyer Herbert | Vibrator tool |
| DE1936231U (en) * | 1965-12-06 | 1966-04-07 | Anton Poettgens | CONCRETE RUETTEL BOTTLE. |
| US3410528A (en) * | 1966-10-17 | 1968-11-12 | Koehring Co | Concrete vibrator |
| US3583677A (en) * | 1969-08-28 | 1971-06-08 | Electro Sonic Oil Tools Inc | Electro-mechanical transducer for secondary oil recovery |
| DE2114899B2 (en) * | 1971-03-27 | 1973-07-05 | MANUAL INTERIOR RUETTLER FOR COMPACTING CONCRETE | |
| US5202612A (en) | 1988-01-29 | 1993-04-13 | Sinano Electric Co., Ltd. | Concrete vibrator |
| JPH0833079B2 (en) * | 1988-01-29 | 1996-03-29 | 三笠産業株式会社 | Concrete vibrator |
| DE9217854U1 (en) * | 1992-12-30 | 1993-03-04 | Wacker-Werke Gmbh & Co Kg, 8077 Reichertshofen | Internal vibrator fed by a converter |
| US5725304A (en) * | 1995-12-13 | 1998-03-10 | Makita Corporation | Battery concrete vibrator |
| US6109111A (en) * | 1997-02-14 | 2000-08-29 | Racine Federated Inc. | Concrete vibrator monitor |
| EP0916785A1 (en) | 1997-11-11 | 1999-05-19 | BOMAG GmbH | Vibrator for compacting concrete |
| DE19913305C2 (en) * | 1999-03-24 | 2003-01-02 | Wacker Werke Kg | Internal vibrator with frequency converter |
-
1999
- 1999-03-24 DE DE19913305A patent/DE19913305C2/en not_active Expired - Lifetime
- 1999-03-24 DE DE19964444A patent/DE19964444B4/en not_active Expired - Fee Related
-
2000
- 2000-02-22 WO PCT/EP2000/001429 patent/WO2000056999A1/en active IP Right Grant
- 2000-02-22 JP JP2000606852A patent/JP2002540322A/en active Pending
- 2000-02-22 US US09/936,798 patent/US6619832B1/en not_active Expired - Fee Related
- 2000-02-22 EP EP00912496A patent/EP1163409B1/en not_active Expired - Lifetime
- 2000-02-22 DE DE50013664T patent/DE50013664D1/en not_active Expired - Lifetime
-
2003
- 2003-04-22 US US10/420,180 patent/US6733169B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP2002540322A (en) | 2002-11-26 |
| US6619832B1 (en) | 2003-09-16 |
| US20030198123A1 (en) | 2003-10-23 |
| DE50013664D1 (en) | 2006-12-07 |
| US6733169B2 (en) | 2004-05-11 |
| DE19913305C2 (en) | 2003-01-02 |
| DE19964444B4 (en) | 2008-06-26 |
| WO2000056999A1 (en) | 2000-09-28 |
| EP1163409A1 (en) | 2001-12-19 |
| DE19913305A1 (en) | 2000-10-12 |
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