EP2896464B1 - Oscillation exciter - Google Patents

Oscillation exciter Download PDF

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Publication number
EP2896464B1
EP2896464B1 EP14151994.2A EP14151994A EP2896464B1 EP 2896464 B1 EP2896464 B1 EP 2896464B1 EP 14151994 A EP14151994 A EP 14151994A EP 2896464 B1 EP2896464 B1 EP 2896464B1
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EP
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Prior art keywords
imbalance
motor
group
groups
masses
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EP14151994.2A
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German (de)
French (fr)
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EP2896464A1 (en
Inventor
Christian Heichel
Thomas Specht
Manuel MEINEL
Albrecht Kleibl
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ABI Anlagentechnik Baumaschinen Industriebedarf Maschinenfabrik und Vertriebsgesellschaft mbH
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ABI Anlagentechnik Baumaschinen Industriebedarf Maschinenfabrik und Vertriebsgesellschaft mbH
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Priority to EP14151994.2A priority Critical patent/EP2896464B1/en
Priority to US14/554,302 priority patent/US9968967B2/en
Publication of EP2896464A1 publication Critical patent/EP2896464A1/en
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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
    • B06B1/16—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
    • 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
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
    • E02D3/02—Improving by compacting
    • E02D3/046—Improving by compacting by tamping or vibrating, e.g. with auxiliary watering of the soil
    • E02D3/074—Vibrating apparatus operating with systems involving rotary unbalanced masses
    • 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
    • Y10T74/21—Elements
    • Y10T74/2117—Power generating-type flywheel

Definitions

  • the invention relates to a vibration exciter, in particular for a vibrating hammer, according to the preamble of patent claim 1.
  • vibrators such as vibrators, vibrators, or vibratory bears
  • the soil is stimulated by vibration and thus reaches a "pseudo-liquid" state.
  • the vibration is characterized by a linear movement and is generated by pairwise counter-rotating imbalances within a Vibratorgetriebes.
  • Vibration generators are characterized by the installed unbalance, the so-called "static moment".
  • the amplitude, frequency or force direction of the vibrator In order to achieve optimal propulsion or good compaction depending on the pile material and soil properties, it is desirable to control the amplitude, frequency or force direction of the vibrator.
  • the adjustment of the vibration is expediently via a change of the static torque or the phase position of the imbalances.
  • To adjust the effective size of the unbalance waves with fixed imbalances are rotated against each other, or the active imbalance of each wave is changed.
  • a special design is Hochkantvibratoren. These are usually equipped with three or four unbalanced shafts.
  • the adjustment of the static torque of the vibrator is done by adjusting the effective unbalance of each wave. In this case, an average unbalance is regularly rotated against two outer imbalances to adjust in this way the resulting imbalance.
  • the sum of the two outer unbalances of each shaft corresponds to the static moment (product of center of gravity distance and mass) of the inner imbalance.
  • the two outer imbalances of each shaft are coupled via the shaft itself or via gears so that a relative rotation to each other is excluded. Since the angle between the imbalances on all unbalanced shafts should be the same, usually the outer and inner imbalances of all waves are synchronized with each other and combined with gears to groups. All imbalances, the phase position of which remains unchanged during the adjustment of the static torque, form an imbalance group. Regularly, all internal imbalances form an imbalance group, as well as all external imbalances. The coupling between these groups takes place via a swivel motor, which shifts the phase position between the imbalance groups or keeps them constant.
  • a disadvantage of the previously known vibration generators that at the same time a drive torque is transmitted to the swing motor, via which the coupling of the imbalance groups, whereby a large-volume design of the swing motor is required or three gear rows for synchronization of imbalances are required, whereby the component depth increases and the economy is impaired.
  • the invention aims to remedy this situation.
  • the invention has for its object to provide a vibration generator, in which an adjustment of imbalance groups to each other at the same time with low component depth largely without transmission of a drive torque. According to the invention this object is achieved by a vibration exciter having the features of patent claim 1.
  • a vibration exciter in which the adjustment of the imbalance groups to each other largely without transfer of torque.
  • at least four mutually parallel shafts are provided, on each of which two outer imbalance masses are arranged, between which an average imbalance mass is positioned, in each case the average imbalance mass relative to the outer imbalance masses is rotatably mounted on the shaft, wherein the imbalance masses of at least four waves are combined into two imbalance groups whose unbalance masses are in each case all torsionally rigidly synchronized with each other, wherein in each of the two imbalance groups both outer imbalance masses, and inner imbalance masses are arranged and wherein a phase shifter is arranged, via which the phase position of the two imbalance groups is adjustable to each other ,
  • the swing motor is used only for synchronization and adjustment of the imbalance groups to each other.
  • a drive torque is not transmitted.
  • the imbalance groups which are each driven by a drive motor, formed from external and internal imbalances.
  • the imbalances within an imbalance group always have the same phase.
  • the torsionally rigid synchronization by the provision of only two rows of gears can be realized.
  • the phase shifter is formed by a pivot motor, in particular a rotary vane pivot motor.
  • the housing of the slewing motor via gears with an inner imbalance of an imbalance group and an external imbalance of the same group can be connected torsionally rigid.
  • the shaft of the slewing motor is connected via gears with the inner and outer imbalances of the second imbalance group.
  • each imbalance group is connected to at least one drive motor, via which it is drivable. Because each imbalance group is driven separately, the load on the phase shifter can be limited to the load caused by the phase shift of the two imbalance groups.
  • the drive motors are hydraulic motors with identical displacement. If the sum of the torques of the drive motors of one group is equal to the sum of the torques of the drive motors of the other group, then the pivot motor does not transmit any drive torque. Since the torque of hydraulic motors results from displacement volume and pressure and the drive motors of both groups are expediently moved in parallel on the same hydraulic circuit, ie with the same pressure, the motors of each imbalance group should have the same displacement. This ensures that the phase shifter only has to provide the moment required for adjusting the imbalances.
  • At least one of the drive motors is a variable displacement hydraulic variable displacement motor.
  • a control device is arranged, which is connected to the drive motors and is set up such that the activated absorption volume of the at least one drive motor of the two imbalance groups is identical to one another.
  • a control device is arranged which is connected to the drive motors and is set up in such a way that the activated absorption volume of the at least one drive motor of one of the two imbalance groups is larger and / or smaller than the activated absorption volume of the at least one drive motor of the second imbalance group.
  • phase adjustment of the two imbalance groups relative to each other or a support of the phase shifter is effected by the difference of the total torque of the at least one drive motor of the one imbalance group to the total torque of the at least one drive motor of the second imbalance group.
  • a further relief of the phase shifter is achieved, which is therefore more compact and easier dimensioned.
  • This effect can be achieved both be driven by both unbalance groups of adjusting motors, as well as in that only one imbalance group is driven by an adjusting motor and the other imbalance group by a constant-displacement motor with fixed displacement.
  • the selected as an exemplary vibration exciter is designed as a four-shaft vibrator gear.
  • a mean imbalance mass 22, 12 is arranged, which is connected to a gear 13, 23.
  • two unbalanced shafts 1, 2 are driven directly by a drive motor M1, M2.
  • a swivel motor 3 is arranged, comprising a swivel motor shaft 31 and a swiveling motor housing 32 pivotable relative to the swivel motor shaft 31.
  • the swivel motor 3 is arranged between the two unbalanced shafts 1, 2 connected directly to the drive motors M1, M2.
  • the swivel motor shaft 31 is connected via gears 13 with the unbalanced shafts 1 driven by the drive motor 1 and with the imbalance masses 12 rotatably mounted on the unbalanced shafts 2 driven by the drive motor M2.
  • the pivot motor housing 32 is connected via gears 23 with the driven by the drive motor 2 shafts 2 and with the rotatable to that of the drive motor 1 driven shafts 1 mounted unbalanced masses 22 connected.
  • FIG. 2 In FIG. 2 are connected to the swing motor shaft via gears 13 unbalanced masses 11, 12 shown. These unbalanced masses 11, 12, which form a first unbalance group, are driven via the drive motor M1.
  • FIG. 3 are connected to the swivel motor housing via gears 23 unbalanced masses 21, 22, which are driven by the drive motor M2. These imbalance masses 21, 22 form a second imbalance group.
  • the two drive motors M1, M2 are designed as hydraulic adjusting motors. In hydraulic variable displacement motors, the displacement is adjustable.
  • the two drive motors M1, M2 are connected to a control device (not shown), which is set up in such a way that these drive motors M1, M2 have an approximately equal intake volume at all times.
  • the task of the slewing motor 3 is limited to the phase shift and the synchronization of the two imbalance groups.
  • the shaft assemblies that is, the shafts 1, 2 with the unbalance masses 11, 21, 12, 22 arranged on each of them are the same.
  • the shaft assemblies below the swing motor 3 are identical to the shaft assemblies above the swing motor 3.
  • the shaft assemblies below the swing motor 3 were present but mirrored to the shaft assemblies above the swing motor 3 installed.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Agronomy & Crop Science (AREA)
  • Soil Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)

Description

Die Erfindung betrifft einen Schwingungserreger, insbesondere für eine Vibrationsramme, nach dem Oberbegriff des Patentanspruchs 1.The invention relates to a vibration exciter, in particular for a vibrating hammer, according to the preamble of patent claim 1.

Im Bauwesen werden Schwingungserzeuger wie Vibratoren, Rüttler oder Vibrationsbären verwendet, um Profile in den Boden einzubringen oder zu ziehen oder auch um Bodenmaterial zu verdichten. Der Boden wird durch Vibration angeregt und erreicht so einen "pseudoflüssigen" Zustand. Durch statische Auflast kann das Rammgut dann in den Baugrund gedrückt werden. Die Vibration ist gekennzeichnet durch eine lineare Bewegung und wird durch paarweise gegenläufig rotierende Unwuchten innerhalb eines Vibratorgetriebes generiert. Schwingungserzeuger werden charakterisiert durch die installierte Unwucht, das sogenannte "statische Moment".In construction, vibrators, such as vibrators, vibrators, or vibratory bears, are used to bring or pull profiles into the soil, or to compact soil material. The soil is stimulated by vibration and thus reaches a "pseudo-liquid" state. By static load the pile can then be pressed into the ground. The vibration is characterized by a linear movement and is generated by pairwise counter-rotating imbalances within a Vibratorgetriebes. Vibration generators are characterized by the installed unbalance, the so-called "static moment".

Um in Abhängigkeit von Rammgut und Bodeneigenschaften einen optimalen Vortrieb bzw. eine gute Verdichtung zu erreichen, ist es wünschenswert, Amplitude, Frequenz oder Kraftrichtung des Schwingungserzeugers zu regeln. Die Einstellung der Vibration erfolgt sinnvollerweise über eine Veränderung des statischen Moments oder der Phasenlage der Unwuchten. Zur Verstellung der wirksamen Größe der Unwucht werden Wellen mit unveränderbaren Unwuchten gegeneinander verdreht, oder die aktive Unwucht jeder einzelnen Welle wird verändert. Eine besondere Bauform sind Hochkantvibratoren. Diese sind üblicherweise mit drei oder vier Unwuchtwellen bestückt. Das Verstellen des statischen Moments des Schwingungserzeugers erfolgt durch Verstellen der wirksamen Unwucht jeder Welle. Dabei wird regelmäßig eine mittlere Unwucht gegen zwei äußere Unwuchten verdreht, um auf diese Weise die resultierende Unwucht einzustellen. Dabei entspricht die Summe der beiden äußeren Unwuchten jeder Welle dem statischen Moment (Produkt aus Schwerpunktabstand und Masse) der inneren Unwucht. Die beiden äußeren Unwuchten jeder Welle sind über die Welle selbst oder über Zahnräder so gekoppelt, dass eine relative Verdrehung zueinander ausgeschlossen ist. Da der Winkel zwischen den Unwuchten auf allen Unwuchtwellen gleich sein soll, werden üblicherweise jeweils die äußeren und die inneren Unwuchten aller Wellen miteinander synchronisiert und dabei mit Zahnrädern zu Gruppen zusammengefasst. Alle Unwuchten, deren Phasenlage zueinander bei der Verstellung des statischen Moments unverändert bleibt, bilden eine Unwuchtgruppe. Regelmäßig bilden alle inneren Unwuchten eine Unwuchtgruppe, ebenso alle äußeren. Die Kopplung zwischen diesen Gruppen erfolgt über einen Schwenkmotor, der die Phasenlage zwischen den Unwuchtgruppen verschiebt bzw. konstant hält. Im Stand der Technik finden sich im Wesentlichen zwei Konzepte: Bei dem ersten Ansatz werden die Gruppe der äußeren Unwuchten und die Gruppe der inneren Unwuchten jeweils separat angetrieben. Der Schwenkmotor dient nur der Verstellung und zur Synchronisation bzw. dem Ausgleich der möglicherweise unterschiedlichen Drehmomente der Motoren. Der Vorteil dieses Ansatzes liegt in der geringen Belastung des Schwenkmotors, der Nachteil in der Teilevielfalt. Bei einem Vibrator mit vier Unwuchtwellen und einem mittig angeordneten Schwenkmotor sind hier beispielsweise drei Zahnradreihen mit insgesamt vierzehn Zahnrädern erforderlich.In order to achieve optimal propulsion or good compaction depending on the pile material and soil properties, it is desirable to control the amplitude, frequency or force direction of the vibrator. The adjustment of the vibration is expediently via a change of the static torque or the phase position of the imbalances. To adjust the effective size of the unbalance waves with fixed imbalances are rotated against each other, or the active imbalance of each wave is changed. A special design is Hochkantvibratoren. These are usually equipped with three or four unbalanced shafts. The adjustment of the static torque of the vibrator is done by adjusting the effective unbalance of each wave. In this case, an average unbalance is regularly rotated against two outer imbalances to adjust in this way the resulting imbalance. The sum of the two outer unbalances of each shaft corresponds to the static moment (product of center of gravity distance and mass) of the inner imbalance. The two outer imbalances of each shaft are coupled via the shaft itself or via gears so that a relative rotation to each other is excluded. Since the angle between the imbalances on all unbalanced shafts should be the same, usually the outer and inner imbalances of all waves are synchronized with each other and combined with gears to groups. All imbalances, the phase position of which remains unchanged during the adjustment of the static torque, form an imbalance group. Regularly, all internal imbalances form an imbalance group, as well as all external imbalances. The coupling between these groups takes place via a swivel motor, which shifts the phase position between the imbalance groups or keeps them constant. In the prior art, there are essentially two concepts: In the first approach, the group of external imbalances and the group of internal imbalances are each driven separately. The swivel motor is used only for the adjustment and for the synchronization or the compensation of possibly different torques of the motors. The advantage of this approach lies in the low load of the swing motor, the disadvantage in the variety of parts. In a vibrator with four imbalance shafts and a centrally located pivot motor three gear rows with a total of fourteen gears are required here, for example.

Bei dem zweiten Konzept wird eine Unwuchtgruppe direkt angetrieben, wobei der Antrieb der zweiten Unwuchtgruppe über den Schwenkmotor erfolgt. Bei diesem Ansatz sind lediglich zwei Zahnradreihen mit insgesamt zehn Zahnrädern erforderlich. Nachteilig hierbei ist die hohe Belastung des Schwenkmotors, da durch diesen zusätzlich zum Verstellmoment das halbe Antriebsmoment übertragen wird.In the second concept, an imbalance group is driven directly, with the drive of the second imbalance group via the pivot motor. In this approach, only two gear rows with a total of ten gears are required. The disadvantage here is the high load of the slewing motor, since in addition to the adjustment half the drive torque is transmitted by this.

Nachteilig an den vorbekannten Schwingungserzeugern ist, dass über den Schwenkmotor, über den die Kupplung der Unwuchtgruppen erfolgt, gleichzeitig ein Antriebsmoment zu übertragen ist, wodurch eine großvolumige Auslegung des Schwenkmotors erforderlich ist oder aber drei Zahnradreihen zur Synchronisation der Unwuchten erforderlich sind, wodurch die Bauteiltiefe erhöht und die Wirtschaftlichkeit beeinträchtigt ist.A disadvantage of the previously known vibration generators that at the same time a drive torque is transmitted to the swing motor, via which the coupling of the imbalance groups, whereby a large-volume design of the swing motor is required or three gear rows for synchronization of imbalances are required, whereby the component depth increases and the economy is impaired.

Hier will die Erfindung Abhilfe schaffen. Der Erfindung liegt die Aufgabe zugrunde, einen Schwingungserzeuger bereitzustellen, bei dem eine Verstellung von Unwuchtgruppen zueinander bei gleichzeitig geringer Bauteiltiefe weitgehend ohne Übertragung eines Antriebsmoments erfolgt. Gemäß der Erfindung wird diese Aufgabe durch einen Schwingungserreger mit den Merkmalen des Patentanspruchs 1 gelöst.The invention aims to remedy this situation. The invention has for its object to provide a vibration generator, in which an adjustment of imbalance groups to each other at the same time with low component depth largely without transmission of a drive torque. According to the invention this object is achieved by a vibration exciter having the features of patent claim 1.

Mit der Erfindung ist ein Schwingungserreger geschaffen, bei dem die Verstellung der Unwuchtgruppen zueinander weitgehend ohne Übertragung eines Drehmoments erfolgt. Dadurch, dass wenigstens vier parallel zueinander angeordnete Wellen vorgesehen sind, auf denen jeweils zwei äußere Unwuchtmassen angeordnet sind, zwischen denen eine mittlere Unwuchtmasse positioniert ist, wobei jeweils die mittlere Unwuchtmasse gegenüber den äußeren Unwuchtmassen verdrehbar auf der Welle gelagert ist, wobei die Unwuchtmassen der wenigstens vier Wellen zu zwei Unwuchtgruppen zusammengefasst sind, deren Unwuchtmassen jeweils sämtlich drehsteif miteinander synchronisiert sind, wobei in jeder der beiden Unwuchtgruppen sowohl äußere Unwuchtmassen, als auch innere Unwuchtmassen angeordnet sind und wobei ein Phasenschieber angeordnet ist, über den die Phasenlage der beiden Unwuchtgruppen zueinander einstellbar ist, dient der Schwenkmotor lediglich zur Synchronisation und Verstellung der Unwuchtgruppen zueinander. Ein Antriebsmoment wird dabei nicht übertragen. Dabei sind - im Gegensatz zu den vorbekannten Schwingungserregern - keine inneren und äußeren Unwuchtgruppen angeordnet. Vielmehr sind die Unwuchtgruppen, die jeweils von einem Antriebsmotor angetrieben werden, aus äußeren sowie inneren Unwuchten gebildet. Dabei haben die Unwuchten innerhalb einer Unwuchtgruppe immer dieselbe Phasenlage. Zudem ist die drehsteife Synchronisation durch das Vorsehen von lediglich zwei Reihen von Zahnrädern realisierbar.With the invention, a vibration exciter is provided in which the adjustment of the imbalance groups to each other largely without transfer of torque. Characterized in that at least four mutually parallel shafts are provided, on each of which two outer imbalance masses are arranged, between which an average imbalance mass is positioned, in each case the average imbalance mass relative to the outer imbalance masses is rotatably mounted on the shaft, wherein the imbalance masses of at least four waves are combined into two imbalance groups whose unbalance masses are in each case all torsionally rigidly synchronized with each other, wherein in each of the two imbalance groups both outer imbalance masses, and inner imbalance masses are arranged and wherein a phase shifter is arranged, via which the phase position of the two imbalance groups is adjustable to each other , The swing motor is used only for synchronization and adjustment of the imbalance groups to each other. A drive torque is not transmitted. In this case - in contrast to the previously known vibration exciters - no inner and outer imbalance groups arranged. Rather, the imbalance groups, which are each driven by a drive motor, formed from external and internal imbalances. The imbalances within an imbalance group always have the same phase. In addition, the torsionally rigid synchronization by the provision of only two rows of gears can be realized.

Bevorzugt ist der Phasenschieber durch einen Schwenkmotor, insbesondere einen Drehflügelschwenkmotor gebildet. Dabei kann das Gehäuse des Schwenkmotors über Zahnräder mit einer inneren Unwucht einer Unwuchtgruppe und einer äußeren Unwucht der gleichen Gruppe drehsteif verbunden sein. Die Welle des Schwenkmotors ist dabei über Zahnräder mit den inneren und äußeren Unwuchten der zweiten Unwuchtgruppe verbunden. Durch eine Drehung der Welle des Schwenkmotors relativ zu seinem Gehäuse ist so eine Veränderung der Winkelstellung der Unwuchtgruppen zueinander erzielbar.Preferably, the phase shifter is formed by a pivot motor, in particular a rotary vane pivot motor. In this case, the housing of the slewing motor via gears with an inner imbalance of an imbalance group and an external imbalance of the same group can be connected torsionally rigid. The shaft of the slewing motor is connected via gears with the inner and outer imbalances of the second imbalance group. By a rotation of the shaft of the rotary motor relative to its housing so a change in the angular position of the imbalance groups to each other can be achieved.

In Weiterbildung der Erfindung ist jede Unwuchtgruppe mit wenigstens einem Antriebsmotor verbunden, über den sie antreibbar ist. Dadurch, dass jede Unwuchtgruppe separat angetrieben ist, ist die Belastung des Phasenschiebers auf die durch die Phasenverschiebung der beiden Unwuchtgruppen zueinander verursachte Last begrenzbar.In development of the invention, each imbalance group is connected to at least one drive motor, via which it is drivable. Because each imbalance group is driven separately, the load on the phase shifter can be limited to the load caused by the phase shift of the two imbalance groups.

Vorteilhaft sind die Antriebsmotoren hydraulische Motoren mit identischem Schluckvolumen. Ist die Summe der Drehmomente der Antriebsmotoren der einen Gruppe gleich der Summe der Drehmomente der Antriebsmotoren der anderen Gruppe, so überträgt der Schwenkmotor kein Antriebsmoment. Da sich das Drehmoment von Hydraulikmotoren aus Schluckvolumen und Druck ergibt und die Antriebsmotoren beider Gruppen zweckmäßigerweise parallel am gleichen Hydraulikkreis, also mit gleichem Druck beaufschlagt, gefahren werden, sollten die Motoren jeder Unwuchtgruppe das gleiche Schluckvolumen aufweisen. Hierdurch ist gewährleistet, dass der Phasenschieber nur das zur Verstellung der Unwuchten zueinander erforderliche Moment zu erbringen hat.Advantageously, the drive motors are hydraulic motors with identical displacement. If the sum of the torques of the drive motors of one group is equal to the sum of the torques of the drive motors of the other group, then the pivot motor does not transmit any drive torque. Since the torque of hydraulic motors results from displacement volume and pressure and the drive motors of both groups are expediently moved in parallel on the same hydraulic circuit, ie with the same pressure, the motors of each imbalance group should have the same displacement. This ensures that the phase shifter only has to provide the moment required for adjusting the imbalances.

Erfindungsgemäß ist wenigstens einer der Antriebsmotoren ein hydraulischer Verstellmotor mit veränderbarem Schluckvolumen. Dabei ist eine Steuereinrichtung angeordnet, die mit den Antriebsmotoren verbunden und derart eingerichtet ist, dass das aktivierte Schluckvolumen des wenigstens einen Antriebsmotors der beiden Unwuchtgruppen zueinander identisch einstellbar ist. Dabei ist eine Steuereinrichtung angeordnet, die mit den Antriebsmotoren verbunden und derart eingerichtet ist, dass das aktivierte Schluckvolumen des wenigstens jeweils einen Antriebsmotors einer der beiden Unwuchtgruppen gegenüber dem aktivierten Schluckvolumen des wenigstens einen Antriebsmotors der zweiten Unwuchtgruppe größer und/oder kleiner einstellbar ist, derart, dass durch die Differenz des Gesamtdrehmoments des wenigstens einen Antriebsmotors der einen Unwuchtgruppe zu dem Gesamtdrehmoment des wenigstens einen Antriebsmotors der zweiten Unwuchtgruppe eine Phasenverstellung der beiden Unwuchtgruppen zueinander bzw. eine Unterstützung des Phasenschiebers bewirkt ist. Hierdurch ist eine weitere Entlastung des Phasenschiebers erzielbar, der deshalb kompakter und leichter dimensionierbar ist. Dieser Effekt kann sowohl erreicht werden, indem beide Unwuchtgruppen von Verstellmotoren angetrieben werden, als auch dadurch, dass nur eine Unwuchtgruppe durch einen Verstellmotor und die andere Unwuchtgruppe durch einen Konstantmotor mit unveränderlichem Schluckvolumen angetrieben wird.According to the invention, at least one of the drive motors is a variable displacement hydraulic variable displacement motor. In this case, a control device is arranged, which is connected to the drive motors and is set up such that the activated absorption volume of the at least one drive motor of the two imbalance groups is identical to one another. In this case, a control device is arranged which is connected to the drive motors and is set up in such a way that the activated absorption volume of the at least one drive motor of one of the two imbalance groups is larger and / or smaller than the activated absorption volume of the at least one drive motor of the second imbalance group. in that a phase adjustment of the two imbalance groups relative to each other or a support of the phase shifter is effected by the difference of the total torque of the at least one drive motor of the one imbalance group to the total torque of the at least one drive motor of the second imbalance group. As a result, a further relief of the phase shifter is achieved, which is therefore more compact and easier dimensioned. This effect can be achieved both be driven by both unbalance groups of adjusting motors, as well as in that only one imbalance group is driven by an adjusting motor and the other imbalance group by a constant-displacement motor with fixed displacement.

Andere Weiterbildungen und Ausgestaltungen der Erfindung sind in den übrigen Unteransprüchen angegeben. Ein Ausführungsbeispiel der Erfindung ist in den Zeichnungen dargestellt und wird nachfolgend im Einzelnen beschrieben. Es zeigen:

Figur 1
Die schematische Darstellung eines Schwingungserzeugers;
Figur 2
die schematische Darstellung der ersten Unwuchtgruppe des Schwingungserzeugers und
Figur 3
die schematische Darstellung der zweiten Unwuchtgruppe des Schwingungserzeugers aus Figur 1.
Other developments and refinements of the invention are specified in the remaining subclaims. An embodiment of the invention is illustrated in the drawings and will be described in detail below. Show it:
FIG. 1
The schematic representation of a vibrator;
FIG. 2
the schematic representation of the first imbalance group of the vibrator and
FIG. 3
the schematic representation of the second imbalance group of the vibrator FIG. 1 ,

Der als Ausführungsbeispiel gewählte Schwingungserreger ist als vierwelliges Vibratorgetriebe ausgeführt. Es sind vier Unwuchtwellen 1, 2 parallel zueinander angeordnet, auf der beabstandet zueinander zwei äußere Unwuchtmassen 11, 21 befestigt sind. Mittig zwischen den beiden äußeren Unwuchtmassen 11, 21 ist jeweils eine mittlere Unwuchtmasse 22, 12 angeordnet, die mit einem Zahnrad 13, 23 verbunden ist. Jeweils zwei Unwuchtwellen 1, 2 sind direkt über einen Antriebsmotor M1, M2 angetrieben. Weiterhin ist ein Schwenkmotor 3 angeordnet, umfassend eine Schwenkmotorwelle 31 sowie ein gegenüber der Schwenkmotorwelle 31 verschwenkbares Schwenkmotorgehäuse 32. Der Schwenkmotor 3 ist zwischen den beiden direkt mit den Antriebsmotoren M1, M2 verbundenen Unwuchtwellen 1, 2 angeordnet. Dabei ist die Schwenkmotorwelle 31 über Zahnräder 13 mit den von dem Antriebsmotor 1 angetriebenen Unwuchtwellen 1 sowie mit den auf den von dem Antriebsmotor M2 angetriebenen Unwuchtwellen 2 drehbar gelagerten Unwuchtmassen 12 verbunden. Das Schwenkmotorgehäuse 32 ist über Zahnräder 23 mit den von dem Antriebsmotor 2 angetriebenen Wellen 2 sowie mit den drehbar auf den von dem Antriebsmotor 1 angetriebenen Wellen 1 gelagerten Unwuchtmassen 22 verbunden.The selected as an exemplary vibration exciter is designed as a four-shaft vibrator gear. There are four unbalanced shafts 1, 2 arranged parallel to each other, on the spaced apart two outer unbalanced masses 11, 21 are attached. In the middle between the two outer imbalance masses 11, 21 is in each case a mean imbalance mass 22, 12 is arranged, which is connected to a gear 13, 23. In each case two unbalanced shafts 1, 2 are driven directly by a drive motor M1, M2. Furthermore, a swivel motor 3 is arranged, comprising a swivel motor shaft 31 and a swiveling motor housing 32 pivotable relative to the swivel motor shaft 31. The swivel motor 3 is arranged between the two unbalanced shafts 1, 2 connected directly to the drive motors M1, M2. In this case, the swivel motor shaft 31 is connected via gears 13 with the unbalanced shafts 1 driven by the drive motor 1 and with the imbalance masses 12 rotatably mounted on the unbalanced shafts 2 driven by the drive motor M2. The pivot motor housing 32 is connected via gears 23 with the driven by the drive motor 2 shafts 2 and with the rotatable to that of the drive motor 1 driven shafts 1 mounted unbalanced masses 22 connected.

In Figur 2 sind die mit der Schwenkmotorwelle über Zahnräder 13 verbundenen Unwuchtmassen 11, 12 dargestellt. Diese Unwuchtmassen 11, 12, welche eine erste Unwuchtgruppe bilden, sind über dem Antriebsmotor M1 angetrieben. In Figur 3 sind die mit dem Schwenkmotorgehäuse über Zahnräder 23 verbundenen Unwuchtmassen 21, 22 dargestellt, welche über den Antriebsmotor M2 angetrieben sind. Diese Unwuchtmassen 21, 22 bilden eine zweite Unwuchtgruppe aus. Die beiden Antriebsmotoren M1, M2 sind als hydraulische Verstellmotoren ausgebildet. Bei hydraulischen Verstellmotoren ist das Schluckvolumen einstellbar. Die beiden Antriebsmotoren M1, M2 sind mit einer - nicht dargestellten - Steuereinrichtung verbunden, die derart eingerichtet ist, dass diese Antriebsmotoren M1, M2 zu jeder Zeit ein annähernd gleiches Schluckvolumen aufweisen. Die Aufgabe des Schwenkmotors 3 beschränkt sich auf die Phasenverschiebung und die Synchronisation der beiden Unwuchtgruppen. Im Ausführungsbeispiel sind die Wellenbaugruppen, das heißt die Wellen 1, 2 mit den jeweils auf Ihnen angeordneten Unwuchtmassen 11, 21, 12, 22 gleich ausgebildet. Die Wellenbaugruppen unterhalb des Schwenkmotors 3 sind identisch mit den Wellenbaugruppen oberhalb des Schwenkmotors 3. Die Wellenbaugruppen unterhalb des Schwenkmotors 3 wurden vorliegend jedoch gespiegelt zu den Wellenbaugruppen oberhalb des Schwenkmotors 3 verbaut.In FIG. 2 are connected to the swing motor shaft via gears 13 unbalanced masses 11, 12 shown. These unbalanced masses 11, 12, which form a first unbalance group, are driven via the drive motor M1. In FIG. 3 are connected to the swivel motor housing via gears 23 unbalanced masses 21, 22, which are driven by the drive motor M2. These imbalance masses 21, 22 form a second imbalance group. The two drive motors M1, M2 are designed as hydraulic adjusting motors. In hydraulic variable displacement motors, the displacement is adjustable. The two drive motors M1, M2 are connected to a control device (not shown), which is set up in such a way that these drive motors M1, M2 have an approximately equal intake volume at all times. The task of the slewing motor 3 is limited to the phase shift and the synchronization of the two imbalance groups. In the exemplary embodiment, the shaft assemblies, that is, the shafts 1, 2 with the unbalance masses 11, 21, 12, 22 arranged on each of them are the same. The shaft assemblies below the swing motor 3 are identical to the shaft assemblies above the swing motor 3. The shaft assemblies below the swing motor 3 were present but mirrored to the shaft assemblies above the swing motor 3 installed.

Claims (4)

  1. Oscillation exciter, particularly for a vibrating pile driver, comprising at least four parallel shafts (1, 2), on which two outer imbalance masses (11, 21) are respectively arranged, between which a middle imbalance mass (12, 22) is positioned, wherein the middle imbalance mass (12, 22) is respectively rotatably mounted on the shaft (1, 2) vis-à-vis the outer imbalance masses (11, 21), wherein the imbalance masses (11, 21, 12, 22) of the at least four shafts (1, 2) are combined into two imbalance groups, the imbalance masses (11, 21, 12, 22) of which are respectively synchronised with each other in a torsionally rigid manner, wherein in each of the two imbalance groups outer imbalance masses (11, 21) as well as inner imbalance masses (12, 22) are arranged and wherein a phase shifter is arranged, via which the phase position of the two imbalance groups relative to one another is adjustable, characterised in that at least one of the driving motors (M1, M2) is a hydraulic adjusting motor with a variable absorption volume and wherein a control device is arranged, which is connected to the driving motors (M1, M2) and is set up in a way that the activated absorption volume of the at least one driving motor (M1, M2) of the two imbalance groups is adjustable identically to one another and/or that the activated absorption volume of the at least one driving motor (M1) of one imbalance group vis-à-vis the activated absorption volume of the at least one driving motor (M2) of the other imbalance group is adjustable larger and/or smaller in a way that due to the difference of total torque of the at least one driving motor (M1) of the one imbalance group to the total torque of the at least one driving motor (M2) of the second imbalance group, a phase adjustment of the two imbalance groups to one another or a support of the phase shifter is effected.
  2. Oscillation exciter according to claim 1, characterised in that the phase shifter is an oscillating motor, preferably a rotating wing oscillating motor.
  3. Oscillation exciter according to claim 1 or 2, characterised in that each imbalance group is connected to at least one driving motor (M1, M2), via which it is drivable.
  4. Oscillation exciter according to claim 3, characterised in that the driving motors (M1, M2) are hydraulic motors.
EP14151994.2A 2014-01-21 2014-01-21 Oscillation exciter Active EP2896464B1 (en)

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EP14151994.2A EP2896464B1 (en) 2014-01-21 2014-01-21 Oscillation exciter
US14/554,302 US9968967B2 (en) 2014-01-21 2014-11-26 Vibration exciter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP14151994.2A EP2896464B1 (en) 2014-01-21 2014-01-21 Oscillation exciter

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CN109364804A (en) * 2018-09-25 2019-02-22 珠海丽珠试剂股份有限公司 A kind of incubation oscillation device

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US5177386A (en) * 1990-08-30 1993-01-05 Kencho Kobe Co., Ltd. Vibration generator adjustable during operation
FR2679156B1 (en) * 1991-07-15 1993-10-29 Procedes Techniques Construction A VARIABLE MOMENT THAT CAN BE USED IN PARTICULAR FOR Sinking objects into the ground.
DE102008006748B4 (en) * 2008-01-30 2013-09-19 Wacker Neuson Produktion GmbH & Co. KG Unbalanced vibration exciter for a vibrating plate
FR2934509B1 (en) * 2008-07-30 2010-09-10 Ptc VARIABLE TIME VIBRATOR USING REDUCED GAME DEHASTER
EP2158976B1 (en) * 2008-08-27 2013-08-14 ABI Anlagentechnik-Baumaschinen-Industriebedarf Maschinenfabrik und Vertriebsgesellschaft mbH Vibration creator

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US9968967B2 (en) 2018-05-15
EP2896464A1 (en) 2015-07-22

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