EP3243573B1 - Vibration generator - Google Patents
Vibration generator Download PDFInfo
- Publication number
- EP3243573B1 EP3243573B1 EP16168703.3A EP16168703A EP3243573B1 EP 3243573 B1 EP3243573 B1 EP 3243573B1 EP 16168703 A EP16168703 A EP 16168703A EP 3243573 B1 EP3243573 B1 EP 3243573B1
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- EP
- European Patent Office
- Prior art keywords
- locking
- vibration generator
- adjustable
- weight element
- weight
- 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.)
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- 238000005553 drilling Methods 0.000 claims description 6
- 239000002689 soil Substances 0.000 description 4
- 230000033001 locomotion Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000036316 preload Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000005056 compaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
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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
- 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
-
- 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
- B06B1/162—Making use of masses with adjustable amount of eccentricity
- B06B1/164—Making use of masses with adjustable amount of eccentricity the amount of eccentricity being automatically variable as a function of the running condition, e.g. speed, direction
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
- E02D7/18—Placing by vibrating
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B6/00—Drives for drilling with combined rotary and percussive action
Definitions
- the vibration generator according to the invention is characterized in that a locking device is provided, through which the adjustable second weight element is determined up to a predetermined release speed of the shaft in the first position and is released and adjustable upon reaching the trigger speed.
- a locking device is provided, through which the adjustable second weight element is determined up to a predetermined release speed of the shaft in the first position and is released and adjustable upon reaching the trigger speed.
- the size of the imbalance can be held up to a predetermined release speed. This allows a constant imbalance especially when starting the vibrator. This can facilitate start-up of the vibrator in a starting phase and ensures a consistent static torque in the start-up phase.
- An improved control is also achieved when, for example, critical resonance ranges of the vibration generator are passed through. As a result, stress or damage to the vibrator can be avoided.
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Geology (AREA)
- Fluid Mechanics (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Geochemistry & Mineralogy (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
- Earth Drilling (AREA)
Description
Die Erfindung betrifft einen Schwingungserzeuger mit mindestens einer rotierend antreibbaren Welle, auf welcher mindestens eine Unwuchteinheit angeordnet ist, welche aus mindestens zwei Gewichtselementen aufgebaut ist, von denen ein erstes Gewichtselement fest an der Welle angebracht und ein zweites Gewichtselement radial verstellbar gelagert sind, welches abhängig von der Drehzahl der Welle zwischen einer radial innenliegenden ersten Position und einer radial außenliegenden zweiten Position verstellbar ist, gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a vibration generator with at least one rotationally driven shaft on which at least one unbalance unit is arranged, which is composed of at least two weight elements, of which a first weight member fixedly mounted on the shaft and a second weight member are mounted radially adjustable, which depends on The rotational speed of the shaft between a radially inner first position and a radially outer second position is adjustable, according to the preamble of claim 1.
Schwingungserzeuger werden etwa bei Vibrationsrammgeräten zum Einrammen und Ziehen von Spundwandbohlen in beziehungsweise aus einem Boden eingesetzt. Durch die erzeugten Schwingungen, welche durch drehend angetriebene Unwuchteinheiten bewirkt werden, wird der Boden in einen quasi flüssigen Zustand versetzt, so dass eine Bohle oder ein Träger mit einem relativ geringen Kraftaufwand in den Boden eingedrückt oder herausgezogen werden kann.Vibration generators are used, for example, in vibration ramming devices for driving in and pulling sheet piles into and out of a ground. By the vibrations generated, which are caused by rotationally driven unbalance units, the soil is placed in a quasi-liquid state, so that a screed or a carrier can be pressed or pulled with a relatively small force in the ground.
Die Unwuchteinheiten sind über einen oder mehrere Drehantriebe mittels Zahnradgetrieben rotierend angetrieben. Die Unwuchteinheiten und das Zahnradgetriebe sind in einem Getriebegehäuse angeordnet, wobei die einzelnen Unwuchteinheiten in ihrem Drehwinkel zueinander mittels einer Verstelleinrichtung verstellt werden können. Solche Schwingungserzeuger sind etwa aus
Ein gattungsgemäßer Schwingungserzeuger geht aus der
In der
Der Erfindung liegt die Aufgabe zugrunde, einen Schwingungserzeuger anzugeben, bei welchem eine verbesserte Einstellbarkeit der Größe der Unwucht ermöglicht ist.The invention has for its object to provide a vibration generator, in which an improved adjustability of the size of the imbalance is possible.
Die Aufgabe wird nach der Erfindung durch einen Schwingungserzeuger mit den Merkmalen des Anspruchs 1 gelöst. Bevorzugte Ausführungsformen sind in den abhängigen Ansprüchen angegeben.The object is achieved according to the invention by a vibration generator with the features of claim 1. Preferred embodiments are given in the dependent claims.
Der erfindungsgemäße Schwingungserzeuger ist dadurch gekennzeichnet, dass eine Arretiereinrichtung vorgesehen ist, durch welche das verstellbare zweite Gewichtselement bis zu einer vorgegebenen Auslösedrehzahl der Welle in der ersten Position festgestellt ist und bei Erreichen der Auslösedrehzahl gelöst und verstellbar ist. Bei dem erfindungsgemäßen Schwingungserzeuger kann so die Größe der Unwucht bis zu einer vorgegebenen Auslösedrehzahl festgehalten werden. Dies ermöglicht insbesondere bei einem Anfahren des Schwingungserzeugers eine gleichbleibende Unwucht. Dies kann das Anlaufen des Schwingungserzeugers in einer Startphase erleichtern und stellt ein gleichbleibendes statisches Moment in der Anlaufphase sicher. Es wird dabei auch eine verbesserte Kontrolle erreicht, wenn etwa kritische Resonanzbereiche des Schwingungserzeugers durchlaufen werden. Hierdurch können Belastungen oder Beschädigungen des Schwingungserzeugers vermieden werden.The vibration generator according to the invention is characterized in that a locking device is provided, through which the adjustable second weight element is determined up to a predetermined release speed of the shaft in the first position and is released and adjustable upon reaching the trigger speed. In the vibration generator according to the invention so the size of the imbalance can be held up to a predetermined release speed. This allows a constant imbalance especially when starting the vibrator. This can facilitate start-up of the vibrator in a starting phase and ensures a consistent static torque in the start-up phase. An improved control is also achieved when, for example, critical resonance ranges of the vibration generator are passed through. As a result, stress or damage to the vibrator can be avoided.
Eine bevorzugte Ausführungsform des erfindungsgemäßen Schwingungserzeugers besteht darin, dass das zweite Gewichtselement entlang mindestens einer Linearführung verschiebbar gelagert ist, welche quer zu einer Drehachse der Welle gerichtet ist. Die Linearführung kann dabei radial zur Drehachse der Welle oder tangential zu einer zylindrischen Mantellinie um die Drehachse der Welle gerichtet sein. Vorzugsweise können auch zwei oder mehr parallel zueinander verlaufende Linearführungen angeordnet sein. Hierdurch wird eine definierte Lageverschiebung des verstellbaren zweiten Gewichtselementes sichergestellt.A preferred embodiment of the vibration generator according to the invention consists in that the second weight element is displaceably mounted along at least one linear guide, which is directed transversely to a rotation axis of the shaft. The linear guide can be directed radially to the axis of rotation of the shaft or tangentially to a cylindrical surface line around the axis of rotation of the shaft. Preferably, two or more parallel linear guides can be arranged. As a result, a defined positional shift of the adjustable second weight element is ensured.
Der Schwingungserzeuger kann vorzugsweise mehrere Unwuchteinheiten aufweisen. Vorzugsweise sind mindestens ein Paar oder mehrere Paare Unwuchteinheiten vorgesehen, wobei die Unwuchteinheiten eines Paares jeweils auf separaten, parallelen Wellen angeordnet sind. Die Unwuchteinheiten eines Paares werden mit entgegengesetzter Drehrichtung angetrieben. Die Wellen können dabei über miteinander kämmende Zahnräder in Verbindung stehen. Über eine Verstelleinrichtung, die mechanisch über eine Verstellwelle oder elektronisch ausgebildet ist, kann die Drehstellung der Unwuchteinheiten eines Paares zueinander verändert werden. Hierdurch können die Unwuchten insbesondere in einer vertikalen Richtung addiert und in einer horizontalen Richtung kompensiert werden. In einem Leerlauf ist auch eine Kompensation in vertikaler Richtung möglich.The vibrator may preferably include a plurality of imbalance units. Preferably, at least one pair or more pairs of imbalance units are provided, wherein the imbalance units of a pair are each arranged on separate, parallel shafts. The unbalance units of a pair are driven in opposite directions of rotation. The shafts can be connected via intermeshing gears. About an adjusting device which is mechanically formed via an adjusting or electronically, the rotational position of the imbalance units of a pair can be changed to each other. As a result, the imbalances can be added in particular in a vertical direction and compensated in a horizontal direction. In an idle and a compensation in the vertical direction is possible.
Besonders bevorzugt ist es nach einer Ausführungsform der Erfindung, dass die Arretiereinrichtung mindestens ein Arretierelement aufweist, welches zwischen einer Arretierposition und einer Freigabeposition verstellbar ist. Das Arretierelement kann dabei ein Arretierstift oder ein Arretierhaken sein. In der Arretierposition ist das Arretierelement mit dem verstellbaren Gewichtselement in Eingriff und fixiert dessen Lage. Bei Erreichen einer Auslösedrehzahl kann das Arretierelement in eine Freigabeposition verschoben oder verschwenkt werden, so dass das zweite Gewichtselement durch die bei der Auslösedrehzahl herrschende Fliehkraft verstellt wird. Die Auslösedrehzahl ist größer als Null und kann vorzugsweise einen Wert zwischen 10% bis 90% der maximalen Betriebsdrehzahl betragen. In der Freigabeposition ist das Arretierelement von dem zweiten Gewichtselement beabstandet, wobei eine freie Verstellbarkeit ermöglicht wird.According to one embodiment of the invention, it is particularly preferred that the locking device has at least one locking element which is adjustable between a locking position and a release position. The locking element may be a locking pin or a locking hook. In the locking position, the locking element is engaged with the adjustable weight element and fixes its position. Upon reaching a trigger speed, the locking element can be moved or pivoted into a release position, so that the second weight element is adjusted by the centrifugal force prevailing at the triggering speed. The triggering speed is greater than zero and may preferably be between 10% and 90% of the maximum operating speed. In the release position, the locking element is spaced from the second weight element, wherein a free adjustability is made possible.
Besonders vorteilhaft ist es nach einer Weiterbildung der Erfindung, dass das mindestens eine Arretierelement quer zur Linearführung des zweiten Gewichtselements verstellbar ist. Vorzugsweise ist das Arretierelement ein Arretierstift, welches quer zur Linearführung verschiebbar gelagert ist.It is particularly advantageous according to a development of the invention that the at least one locking element is adjustable transversely to the linear guide of the second weight element. Preferably, the locking element is a locking pin, which is mounted displaceably transversely to the linear guide.
Nach der Erfindung ist es besonders vorteilhaft, dass das mindestens eine Arretierelement federgespannt in der Arretierposition gehalten ist und in eine Arretierausnehmung an dem verstellbaren zweiten Gewichtselement eingreift. Durch eine Federvorspannung wird das Arretierelement in der Arretierposition gehalten, so dass das zweite Gewichtselement zuverlässig in der radial innenliegenden ersten Position gehalten ist. Das Verschieben des Arretierelementes kann durch einen Aktor, etwa durch einen Elektromagneten, bewirkt werden. In einer besonders robusten Ausführungsform kann die Federvorspannung des Arretierelementes so ausgelegt sein, dass die Federvorspannung des Arretierelementes durch die bei der Auslösedrehzahl herrschenden Fliehkraft überwunden und das Arretierelement in die Freigabeposition gedrückt wird. Das Arretierelement kann an der Welle oder dem Gewichtselement verstellbar gelagert sein.According to the invention, it is particularly advantageous that the at least one locking element is held spring-loaded in the locking position and engages in a locking recess on the adjustable second weight element. By a spring bias the locking element is held in the locking position, so that the second weight element is reliably held in the radially inner first position. The displacement of the locking element can be effected by an actuator, such as an electromagnet. In a particularly robust embodiment, the spring preload of the locking element can be designed so that the spring preload of the locking element overcome by the centrifugal force prevailing at the trigger speed and the locking element is pressed into the release position. The locking element may be adjustably mounted on the shaft or the weight element.
Dabei ist es nach der Erfindung besonders vorteilhaft, dass die Arretierausnehmung eine Einlauf- und/oder eine Auslaufschräge aufweist. Die Einlauf- oder Auslaufschräge kann als eine Art Keilschiebemechanismus dienen, bei welcher die auf das verstellbare zweite Gewichtselement wirkende Fliehkraft in eine Gegenkraft übersetzt wird, welche das Arretierelement aus der Arretierposition in die Freigabeposition drückt. Eine Spitze des Arretierelements ist entsprechend mit einer Schräge oder Abrundung ausgebildet.
Eine besonders zuverlässige Arretierung des zweiten Gewichtselementes wird nach einer Ausführungsvariante der Erfindung dadurch erzielt, dass zwei Arretierelemente vorgesehen sind, welche entgegengesetzt gerichtet und verschiebbar sind. Es ist somit eine doppelte Arretierung und Feststellung des zweiten Gewichtselementes in der Arretierposition gegeben.
Gemäß einer Weiterbildung der Erfindung ist es vorteilhaft, dass mindestens eine Rückstellfeder vorgesehen ist, durch welche das zweite Gewichtselement in die radial innen liegende erste Position rückstellbar ist. Die Rückstellfeder ist dabei vorzugsweise mit einer relativ geringen Rückstellfederkraft ausgebildet, so dass das Gewichtselement nach dem Lösen der Arretiereinrichtung zügig die radial außen liegende zweite Position einnehmen und erst bei Erreichen einer relativ geringen Rückstelldrehzahl, welche vorzugsweise kleiner als die Auslösedrehzahl ist, wieder zurück in die radial innen liegende erste Position gestellt wird. Bei dieser Rückstellung kann das Gewichtselement dann auch wieder durch die Arretiereinrichtung in der ersten Position festgestellt werden.It is particularly advantageous according to the invention that the Arretierausnehmung has an inlet and / or an outlet slope. The inlet or outlet slope may serve as a type of wedge-sliding mechanism, in which the centrifugal force acting on the adjustable second weight element is translated into a counter force which presses the locking element from the locking position to the release position. A tip of the locking element is formed in accordance with a slope or rounding.
A particularly reliable locking of the second weight element is achieved according to a variant of the invention in that two locking elements are provided, which are oppositely directed and displaceable. It is thus given a double locking and determination of the second weight element in the locking position.
According to one embodiment of the invention, it is advantageous that at least one return spring is provided, by means of which the second weight element can be reset in the radially inner first position. The return spring is preferably formed with a relatively low return spring force, so that the weight element after releasing the locking device rapidly occupy the radially outer second position and only upon reaching a relatively low reset speed, which is preferably less than the trigger speed, back to the radially inner first position is provided. In this provision, the weight element can then also be determined by the locking device in the first position.
Um bei einer steigenden Drehzahl eine übermäßige Erhöhung der Unwucht zu begrenzen, ist es nach einer Ausführungsvariante der Erfindung zweckmäßig, dass die Unwucht der Unwuchteinheit durch das Verstellen des zweiten Gewichtselementes in die radial außen liegende Position verringert ist. Bei dieser Anordnung sind das erste Gewichtselement und das zweite Gewichtselement in Bezug auf die Welle gegengerichtet zueinander angeordnet. Bei Erreichen der radial außen liegenden zweiten Position kompensiert somit das zweite Gewichtselement die durch das erste Gewichtselement bewirkte Unwucht.In order to limit an excessive increase in the imbalance at an increasing speed, it is expedient according to a variant of the invention that the imbalance of the imbalance unit is reduced by the adjustment of the second weight element in the radially outer position. In this arrangement, the first weight member and the second weight member are arranged with respect to the shaft counter to each other. Upon reaching the radially outer second position thus compensated for the second weight element caused by the first weight element unbalance.
Alternativ kann es nach einer Ausbildung der Erfindung zweckmäßig sein, dass die Unwucht der Unwuchteinheit durch das Verstellen des zweiten Gewichtselements in die radial außen liegende zweite Position erhöht ist. Diese Anordnung ist insbesondere dann sinnvoll, wenn zum Anlaufen des Schwingungserzeugers in einer Startphase nur eine geringe oder gar keine Unwucht an der Welle gegeben sein soll. Dabei ist es bei einem relativ geringen Anlaufdrehmoment möglich, sehr schnell eine gewünschte Betriebsdrehzahl zu erreichen. Bei Überschreiten der Auslösedrehzahl wird das zweite Gewichtselement verstellt, wobei die maßgebliche Unwucht an der Welle gebildet wird. Dabei kann ein maximales statisches Moment an der Welle der Unwuchteinheit erzeugt werden.Alternatively, it may be expedient according to an embodiment of the invention that the imbalance of the imbalance unit is increased by the adjustment of the second weight element in the radially outer second position. This arrangement is particularly useful when the start of the vibrator in a start phase, only a small or no imbalance should be given to the shaft. It is possible at a relatively low starting torque to reach a desired operating speed very quickly. When the trigger speed is exceeded, the second weight element is adjusted, wherein the relevant imbalance is formed on the shaft. In this case, a maximum static torque can be generated on the shaft of the imbalance unit.
Grundsätzlich kann der erfindungsgemäße Schwingungserzeuger in unterschiedlichen Bereichen angewendet werden. Insbesondere kann der Schwingungserzeuger auch zur Bodenverdichtung in einem Bodenverdichter eingesetzt werden.In principle, the vibration generator according to the invention can be used in different areas. In particular, the vibration generator can also be used for soil compaction in a soil compactor.
Besonders bevorzugt ist es nach der Erfindung, dass ein Vibrationsrammgerät mit einem Trägergerät vorgesehen ist, an welchem ein erfindungsgemäßer Schwingungserzeuger vertikal verstellbar gelagert ist. Das Trägergerät kann dabei insbesondere ein Raupenfahrzeug sein, an welchem der Schwingungserzeuger entlang eines Mastes verfahrbar oder an einem Kranausleger an einem Seil vertikal verstellbar angehängt ist. Der Schwingungserzeuger weist dabei eine Halteeinrichtung, insbesondere eine Spannzange auf, mit welcher ein in den Boden einzubringender Träger, insbesondere eine Spundwandbohle oder ein H-Träger, fest einspannbar ist. Über die Halteeinrichtung kann die vom Schwingungserzeuger erzeugte Schwingung auf das Eindringmedium übertragen werden, welches wiederum die Schwingung auf den Boden überträgt.It is particularly preferred according to the invention that a vibratory pile driver is provided with a carrier device on which a vibration generator according to the invention is mounted vertically adjustable. The carrier device can in particular be a tracked vehicle, on which the vibrator along a mast movable or attached to a crane boom on a rope vertically adjustable. The vibration generator in this case has a holding device, in particular a collet, with which a carrier to be introduced into the soil, in particular a sheet pile or an H-beam, is firmly clamped. About the holding device, the vibration generated by the vibrator can be transmitted to the penetration medium, which in turn transmits the vibration to the ground.
Weiterhin ist nach der Erfindung ein Bohrgerät mit einem Bohrantrieb vorgesehen, durch welchen ein Bohrgestänge drehend antreibbar ist, wobei ein erfindungsgemäßer Schwingungserzeuger vorgesehen ist. Mit einem derartigen Bohrgerät kann die drehende Bohrbewegung mit einer axialen Schwingbewegung überlagert werden. Hierdurch kann ein Vibrationsbohren oder auch ein sogenanntes Sonic-Drilling durchgeführt werden. Bei einem derartigen Vibrationsbohren kann aufgrund der überlagernden Vibrationsbewegung ein erhöhter Bohrfortschritt erreicht werden. Der Schwingungserzeuger ist vorzugsweise an dem Bohrantrieb angeordnet.Furthermore, according to the invention, a drill with a drill drive is provided, through which a drill pipe is rotationally driven, wherein an inventive vibration generator is provided. With such a drill, the rotating drilling movement can be superimposed with an axial swinging motion. As a result, a vibration drilling or a so-called sonic drilling can be performed. In such a vibration drilling increased drilling progress can be achieved due to the superimposed vibration movement. The vibration generator is preferably arranged on the drill drive.
Die Erfindung wird nachfolgend anhand eines bevorzugten Ausführungsbeispieles erläutert, welches schematisch in den Zeichnungen dargestellt ist. In den Zeichnungen zeigen:
- Fig. 1
- eine schematische Darstellung eines erfindungsgemäßen Schwingungserzeugers;
- Fig. 2
- eine Querschnittsansicht durch eine Unwuchteinheit eines erfindungsgemäßen Schwingungserzeugers, bei der ein verstellbares Gewichtselement sich in einer radial innen liegenden ersten Position befindet; und
- Fig. 3
- eine Querschnittsansicht der Unwuchteinheit gemäß
Fig. 2 , wobei sich das zweite Gewichtselement in einer radial außen liegenden zweiten Position befindet.
- Fig. 1
- a schematic representation of a vibration generator according to the invention;
- Fig. 2
- a cross-sectional view through an imbalance unit of a vibration generator according to the invention, in which an adjustable weight member is located in a radially inner first position; and
- Fig. 3
- a cross-sectional view of the imbalance unit according to
Fig. 2 , wherein the second weight member is in a radially outer second position.
In
Der erfindungsgemäße Aufbau der Unwuchteinheiten 20 ist näher im Zusammenhang mit den
An dem ersten Gewichtselement 22 ist in einer Aufnahmebohrung eine Arretiereinrichtung 30 mit zwei stiftförmigen Arretierelementen 32 angeordnet. Die stiftförmigen Arretierelemente 32 weisen an ihrem freien Ende einen gerundeten Kopf 36 auf. Die quer zur Welle 12 gerichteten Arretierelemente 32 werden durch eine Spannfeder 34 nach außen gespannt. Die Spannfedern 34 stützen sich dabei jeweils nach innen an einem Mittelteil 31 ab. Durch die Spannfedern 34 werden die beiden Arretierelemente 32 mit ihrem jeweiligen Kopf 36 in eine im Querschnitt etwa dreieckige Arretierausnehmung 40 gedrückt, welche an dem angrenzenden verstellbaren zweiten Gewichtselement 24 ausgebildet ist. Hierdurch wird das zweite Gewichtselement 24 gemäß
Mit zunehmender Drehzahl der Welle 12 erhöht sich eine Fliehkraft auf das zweite Gewichtselement 24. Bei Erreichen einer Auslösedrehzahl werden die Arretierstifte 32 entgegen der Spannkraft der Spannfeder 34 durch eine keilförmige Einlaufschräge 42 und eine keilförmige Auslaufschräge 44 an der Arretierausnehmung 40 zurück in die Aufnahmebohrung des ersten Gewichtselementes 22 gedrückt. Damit ist das zweite Gewichtselement 24 nunmehr in radialer Richtung freigesetzt und verstellbar. Aufgrund der anliegenden Fliehkraft kann das zweite Gewichtselement 24 eine radial außen liegende zweite Position einnehmen, welche in
Beim radialen nach außen Schieben wird die Rückstellfeder 28 komprimiert und gespannt. Bei einer Reduktion der Drehzahl der Welle 12 kann so das zweite Gewichtselement 24 wieder zurück in die radial innen liegende erste Position gemäß
Claims (9)
- Vibration generator,
having at least one shaft (12) which can be driven in a rotating manner and on which at least one unbalanced unit (20) is arranged that is constructed of at least two weight elements (22, 24), of which a first weight element (22) is firmly mounted on the shaft (12) and a second weight element (24) is supported in a radially adjustable manner which is adjustable between a radially internal first position and a radially external second position,
wherein a locking means (30) with at least one locking element (32) is provided which is adjustable between a locking position and a release position, and wherein the at least one locking element (32) is held in a spring-tensioned manner in the locking position and engages in a locking recess (40) on the adjustable second weight element (24),
characterized in that
the locking recess (40) has a run-in and/or run-out slope (42, 44) for the locking element (32), and
that the second weight element (24) is adjustable depending on the speed of rotation of the shaft (12),
wherein the adjustable second weight element (24) is secured in the first position up to a predetermined triggering speed of rotation of the shaft (12) and, on reaching the triggering speed of rotation, is released and adjustable. - Vibration generator according to claim 1,
characterized in that
the second weight element (24) is supported in a displaceable manner along at least one linear guide (26) which is directed transversely to an axis of rotation (13) of the shaft (12). - Vibration generator according to claim 2,
characterized in that
the at least one locking element (32) is adjustable transversely to the linear guide (26) of the second weight element (24). - Vibration generator according to any one of claims 1 to 3,
characterized in that
two locking elements (32) are provided which are directed and displaceable in opposite directions. - Vibration generator according to any one of claims 1 to 4,
characterized in that
at least one resetting spring (28) is provided, through which the second weight element (24) can be reset into the radially internal first position. - Vibration generator according to any one of claims 1 to 5,
characterized in that
the unbalance of the unbalanced unit (20) is reduced by adjusting the second weight element (24) into the radially external second position. - Vibration generator according to any one of claims 1 to 5,
characterized in that
the unbalance of the unbalanced unit (20) is increased by adjusting the second weight element (24) into the radially external second position. - Vibratory pile driver having a carrier implement, on which a vibration generator is supported in a vertically adjustable manner,
characterized in that
a vibration generator (10) according to any one of claims 1 to 7 is provided. - Drilling apparatus having a drill drive, by which a drill rod can be driven in a rotating manner,
characterized in that
a vibration generator (10) according to any one of claims 1 to 7 is provided.
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DK16168703.3T DK3243573T3 (en) | 2016-05-09 | 2016-05-09 | Vibration Generator |
EP16168703.3A EP3243573B1 (en) | 2016-05-09 | 2016-05-09 | Vibration generator |
ES16168703.3T ES2690986T3 (en) | 2016-05-09 | 2016-05-09 | Oscillation generator |
PL16168703T PL3243573T3 (en) | 2016-05-09 | 2016-05-09 | Vibration generator |
US15/448,198 US20170320094A1 (en) | 2016-05-09 | 2017-03-02 | Vibration generator |
CA2959752A CA2959752A1 (en) | 2016-05-09 | 2017-03-02 | Vibration generator |
CN201710201162.5A CN107377343A (en) | 2016-05-09 | 2017-03-30 | Vibration generating arrangement |
JP2017091094A JP2017202483A (en) | 2016-05-09 | 2017-05-01 | Vibration generator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP16168703.3A EP3243573B1 (en) | 2016-05-09 | 2016-05-09 | Vibration generator |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3243573A1 EP3243573A1 (en) | 2017-11-15 |
EP3243573B1 true EP3243573B1 (en) | 2018-07-18 |
Family
ID=55963188
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16168703.3A Not-in-force EP3243573B1 (en) | 2016-05-09 | 2016-05-09 | Vibration generator |
Country Status (8)
Country | Link |
---|---|
US (1) | US20170320094A1 (en) |
EP (1) | EP3243573B1 (en) |
JP (1) | JP2017202483A (en) |
CN (1) | CN107377343A (en) |
CA (1) | CA2959752A1 (en) |
DK (1) | DK3243573T3 (en) |
ES (1) | ES2690986T3 (en) |
PL (1) | PL3243573T3 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR102610913B1 (en) * | 2016-12-12 | 2023-12-06 | 한국전자통신연구원 | Hybrid self generator using vibration source and wind source and wireless sensor using the same |
DE102020125902A1 (en) | 2020-10-02 | 2022-04-07 | Wacker Neuson Produktion GmbH & Co. KG | Vibration exciter device for generating oscillations and/or vibrations |
CN112762902B (en) * | 2020-12-24 | 2022-08-23 | 张志高 | Municipal construction is with multi-functional mapping tool of fixing a point |
DE102021213368A1 (en) * | 2021-11-26 | 2023-06-01 | Terra Infrastructure Gmbh | unbalance device, as well as vibration pile driver |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2063509A (en) * | 1935-05-02 | 1936-12-08 | Benjamin B Lacy | Vibrating drive |
DE2710349C2 (en) * | 1977-03-10 | 1982-08-26 | Wacker-Werke Gmbh & Co Kg, 8077 Reichertshofen | Imbalance vibration exciter |
SE418411B (en) * | 1979-07-04 | 1981-05-25 | Rune Sturesson | EXCENTER ELEMENT PROVIDED FOR MARKET Vibrators |
EP0070343A1 (en) | 1981-07-18 | 1983-01-26 | Losenhausen Maschinenbau AG& Co Kommanditgesellschaft | Vibrator with an unbalanced mass depending on the number of revolutions |
EP0085271B1 (en) * | 1982-01-29 | 1984-10-31 | Losenhausen Maschinenbau AG& Co Kommanditgesellschaft | Vibrator with movable centrifugal parts adjustable in dependence upon the rotation speed |
DE3303574C1 (en) * | 1983-02-03 | 1984-09-06 | Josef-Gerhard 4030 Ratingen Tünkers | Vibration ram |
US4928554A (en) * | 1988-12-29 | 1990-05-29 | Dryga Alexandr I | Unbalance vibrator |
JP2852205B2 (en) | 1995-07-13 | 1999-01-27 | 静岡日本電気株式会社 | Radio selective call receiver |
US5998911A (en) * | 1996-11-26 | 1999-12-07 | Ngk Insulators, Ltd. | Vibrator, vibratory gyroscope, and vibration adjusting method |
DE69824153T2 (en) * | 1997-08-04 | 2005-06-23 | Seiko Epson Corp. | OPERATOR, AND ALWAYS EQUIPPED CLOCK AND TERMINAL |
JPH11165131A (en) * | 1997-12-02 | 1999-06-22 | Hayashibara Takeshi | Vibration-generating apparatus |
NL1008965C2 (en) | 1998-04-22 | 1999-10-25 | Int Construction Equipment B V | Method and device for vibrating an object. |
US6129159A (en) * | 1998-12-24 | 2000-10-10 | Mpi Drilling | Vibratory drill head apparatus |
EP2085149B2 (en) | 2008-01-29 | 2021-12-22 | ABI Anlagentechnik-Baumaschinen-Industriebedarf Maschinenfabrik und Vertriebsgesellschaft mbH | Vibrator for a vibratory pile driver |
US9505032B2 (en) * | 2013-03-14 | 2016-11-29 | Apple Inc. | Dynamic mass reconfiguration |
-
2016
- 2016-05-09 EP EP16168703.3A patent/EP3243573B1/en not_active Not-in-force
- 2016-05-09 DK DK16168703.3T patent/DK3243573T3/en active
- 2016-05-09 PL PL16168703T patent/PL3243573T3/en unknown
- 2016-05-09 ES ES16168703.3T patent/ES2690986T3/en active Active
-
2017
- 2017-03-02 CA CA2959752A patent/CA2959752A1/en not_active Abandoned
- 2017-03-02 US US15/448,198 patent/US20170320094A1/en not_active Abandoned
- 2017-03-30 CN CN201710201162.5A patent/CN107377343A/en active Pending
- 2017-05-01 JP JP2017091094A patent/JP2017202483A/en active Pending
Non-Patent Citations (1)
Title |
---|
None * |
Also Published As
Publication number | Publication date |
---|---|
JP2017202483A (en) | 2017-11-16 |
CA2959752A1 (en) | 2017-11-09 |
DK3243573T3 (en) | 2018-10-29 |
EP3243573A1 (en) | 2017-11-15 |
CN107377343A (en) | 2017-11-24 |
ES2690986T3 (en) | 2018-11-23 |
US20170320094A1 (en) | 2017-11-09 |
PL3243573T3 (en) | 2019-05-31 |
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