EP1245737B1 - Hydraulic vibrator - Google Patents
Hydraulic vibrator Download PDFInfo
- Publication number
- EP1245737B1 EP1245737B1 EP20020000980 EP02000980A EP1245737B1 EP 1245737 B1 EP1245737 B1 EP 1245737B1 EP 20020000980 EP20020000980 EP 20020000980 EP 02000980 A EP02000980 A EP 02000980A EP 1245737 B1 EP1245737 B1 EP 1245737B1
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- EP
- European Patent Office
- Prior art keywords
- fluid
- hydraulic
- transmission
- circuit
- construction machine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
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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
- B06B1/18—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency wherein the vibrator is actuated by pressure fluid
- B06B1/186—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency wherein the vibrator is actuated by pressure fluid operating with rotary unbalanced masses
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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
Definitions
- the invention relates to a construction machine, in particular a vibrator, with at least one hydraulic drive, which is arranged together with a hydraulic pump in a hydraulic circuit, and at least one gear in which a fluid is provided for lubrication and / or cooling, which circulates in a lubrication circuit.
- Such construction machines have long been used in civil engineering. Such machines usually have a hydraulic motor, since such a hydraulic drive is both robust, and can muster the necessary high torque outputs.
- the hydraulic motor drives a gearbox with eccentric shafts.
- the eccentric shafts of the transmission are used to generate a targeted vibration, which is used for example for the introduction of pile material.
- Such a transmission has a lubricating oil circuit. This ensures a demand-based supply of lubricating oil largely independent of the respective operating position of the machine.
- a vibration generator with a hydraulic motor that drives an eccentric is known.
- a part of the pressure fluid supplied to the engine is discharged to lubricate bearing means of the vibrator.
- the invention has for its object to develop such a machine, so that it is particularly simple, robust and reliable constructed with the same or even improved functionality.
- the hydraulic circuit is connected to the lubrication circuit and that the fluid is simultaneously provided as hydraulic fluid.
- the structure of a construction machine, in particular a vibrator simplified considerably.
- a single combined fluid circuit is provided, which is responsible for both the hydraulic drives and the lubrication.
- the cost of installation and maintenance are significantly reduced.
- the operation of the machine is simplified, since now only a single fluid must be provided and provided.
- an oil can be used as fluid, which fulfills both the necessary properties of a hydraulic fluid with regard to compressibility and the properties of a lubricating oil, in particular with regard to lubrication and cooling.
- the hydraulic circuit and the lubrication circuit are conductively connected to one another via a distributor block.
- a distributor block provides a robust connection point for the two circuits and makes it possible that in principle existing machines can be retrofitted.
- This arrangement is further developed according to the invention in a preferred manner that leads from the hydraulic pump, a common supply line to the manifold block, wherein the hydraulic pump supplies both the hydraulic circuit and the lubrication circuit with fluid. It is thus only a single supply line from the hydraulic pump to the central distribution point, the manifold block to provide.
- a flow control valve is arranged in the lubrication circuit, in particular between the manifold block and the transmission.
- a pressure switch is additionally arranged in the lubrication circuit between the distributor block and the transmission.
- the flow control valve serves as a throttle, with which the relatively high pressure in the hydraulic circuit, which can be up to several 100 bar, is reduced to a necessary, lower pressure value of the lubrication circuit.
- the pressure in the lubrication circuit can be ten times less than the pressure in the hydraulic circuit or even only a few bar.
- the pressure switch is used to monitor the pressure, the total of the effort to control and control the fluid circuits is reduced overall by the combination of the two circuits.
- the invention is further developed by the fact that the transmission has a bottom trough for receiving the fluid and that a lubricating pump is provided, through which fluid can be pumped out of the bottom trough.
- the invention can thus also be used for conventional, vented gear.
- the additional lubrication pump has to apply only the relatively low power for the return of the fluid from the transmission back to the fluid reservoir.
- the return of the fluid from the at least one hydraulic drive and / or from the lubricating pump is conductively connected to a return container, from which the fluid can be discharged via the hydraulic pump. It is to provide only a single return tank or a surge tank for the two circuits. This also brings a further simplification of the structure with it.
- An additional simplification of the overall structure is inventively achieved in that between the collecting container and the hydraulic pump, a cooler and / or a filter are arranged.
- a particularly safe operation of the device according to the invention is given by the fact that a purge valve is provided in the lubrication circuit between the manifold block and the transmission, which prevents an inflow of fluid into the transmission with a stationary hydraulic drive.
- the flush valve may be fed back to the manifold block and / or the at least one hydraulic drive, so that only in operation of the hydraulic drive fluid in the Transmission can get. With a stationary hydraulic drive or with a corresponding reduction in pressure of the fluid supply to the hydraulic drive, the flush valve is closed, so that no fluid can get into the transmission of the manifold block more.
- a construction machine according to the invention is described with reference to a vibrator 10, the essential components of which are shown in FIG.
- a vibrator 10 On a mast 2 of a carriage, not shown, a sliding carriage 3 is guided, on which a housing of the gear 22 of the vibrator 10 is attached.
- a holder 4 At the lower end of the housing of the transmission 22, a holder 4 is mounted, which is used in particular for receiving and introducing Rammgut.
- Such a vibrator is basically known.
- the gear 22 comprises for generating vibrations eccentric 5, which are schematically indicated in Fig. 2.
- the eccentric 5 are over waves and meshing with each other Gear elements in connection and driven by two hydraulic motors 12a, 12b rotating.
- the imbalances on the eccentrics 5 generate desired vibrations during a rotating movement, which can be used to introduce pile material.
- the hydraulic motors 12 a, 12 b are flanged to the outside of the housing of the transmission 22.
- a fluid which according to the invention serves both as hydraulic fluid and as lubricating oil, is guided via a common supply line 32 to a distributor block 30, which represents a line connection between a hydraulic circuit 15 and a lubricating circuit 25.
- the two hydraulic drives 12a, 12b supplied via hydraulic supply lines 17a, 17b with the fluid.
- the return of the fluid takes place via return lines 19a, 19b to the distributor block 30, from which the fluid takes place via a first return line 34.
- the torques of the hydraulic motors 12a, 12b are transmitted to the shafts of the transmission 22 as intended by means of corresponding drive shafts.
- the same fluid as in the hydraulic circuit 15 is used in the lubrication circuit 25.
- the fluid from the distributor block 30 is led via the two alternative supply lines 27a to a flushing valve 28.
- the purge valve 28 is designed and connected so that this only then opened is when at least one of the two hydraulic motors 12a, 12b is in operation. If there is no pressure on either of the two lines 27a and thus no hydraulic motor 12a, 12b is in operation, then the flushing valve 28 closes, thus preventing the introduction of fluid into the gearbox 22.
- the purge valve 28 ensures that during operation of at least one of the two hydraulic motors 12a, 12b, fluid is routed into the transmission 22 for lubrication and cooling.
- the flow control valve 24 has essentially the function of an adjustable throttle, with which both the amount of the fluid supply line and the fluid pressure can be controlled. For example, about 20 to 25 liters of fluid per minute can be injected into the transmission 22 to the desired bearings and cooling points via the flow control valve.
- the fluid pressure is reduced from a few 100 bar to a few bar.
- a pressure switch 26 is further arranged, which serves for measuring and monitoring the line pressure.
- the fluid is introduced for lubrication and cooling to the desired locations in the transmission 22, wherein the fluid collects according to gravity in a bottom pan, not shown. From this, it is pumped off by means of a lubricating line 27d via a lubricating pump 23, which is driven directly by the gear 22 via a corresponding drive shaft. In this way it is ensured that the lubricating pump 23 is operated only when the transmission 22 is put into operation.
- the lubrication pump 23 provides the sufficient pumping pressure to return the fluid via a second return line 36.
- Both the first return line 34 and the second return line 36 lead to processing equipment, not shown in detail, which relates in particular to the cooling, filtering, etc.
- processing equipment not shown in detail, which relates in particular to the cooling, filtering, etc.
- a return or expansion tank is also provided as a fluid reservoir, from which then the hydraulic pump 14 feeds the fluid again into the combined fluid circuit.
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- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
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- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Fluid-Pressure Circuits (AREA)
- General Details Of Gearings (AREA)
Description
Die Erfindung betrifft eine Baumaschine, insbesondere einen Rüttler, mit mindestens einem Hydraulikantrieb, welcher zusammen mit einer Hydraulikpumpe in einem Hydraulikkreislauf angeordnet ist, und mindestens einem Getriebe, in welchem zur Schmierung und/oder Kühlung ein Fluid vorgesehen ist, welches in einem Schmierkreislauf zirkuliert.The invention relates to a construction machine, in particular a vibrator, with at least one hydraulic drive, which is arranged together with a hydraulic pump in a hydraulic circuit, and at least one gear in which a fluid is provided for lubrication and / or cooling, which circulates in a lubrication circuit.
Derartige Baumaschinen werden seit langem im Tiefbau eingesetzt. Derartige Maschinen weisen üblicherweise einen Hydraulikmotor auf, da ein solcher Hydraulikantrieb sowohl robust ist, als auch die notwendigen hohen Drehmomentleistungen aufbringen kann. Bei einem Rüttler wird vom Hydraulikmotor ein Getriebe mit Exzenterwellen angetrieben. Die Exzenterwellen des Getriebes dienen zur Erzeugung einer gezielten Schwingung, welche beispielsweise zum Einbringen von Rammgut eingesetzt wird.Such construction machines have long been used in civil engineering. Such machines usually have a hydraulic motor, since such a hydraulic drive is both robust, and can muster the necessary high torque outputs. In a vibrator, the hydraulic motor drives a gearbox with eccentric shafts. The eccentric shafts of the transmission are used to generate a targeted vibration, which is used for example for the introduction of pile material.
Um eine ausreichende Schmierung der Lager sowie der miteinander kämmenden Verzahnungselemente zu gewährleisten, weist ein solches Getriebe einen Schmierölkreislauf auf. Durch diesen wird eine bedarfsgerechte Zuführung von Schmieröl weitgehend unabhängig von der jeweiligen Betriebslage der Maschine sichergestellt.To ensure adequate lubrication of the bearing and the intermeshing toothing elements, such a transmission has a lubricating oil circuit. This ensures a demand-based supply of lubricating oil largely independent of the respective operating position of the machine.
Aus der
Der Erfindung liegt die Aufgabe zugrunde, eine derartige Maschine weiterzubilden, so dass diese bei gleicher oder sogar verbesserter Funktionsfähigkeit besonders einfach, robust und zuverlässig aufgebaut ist.The invention has for its object to develop such a machine, so that it is particularly simple, robust and reliable constructed with the same or even improved functionality.
Die Aufgabe wird nach der Erfindung durch eine Baumaschine, insbesondere einen Rüttler, mit den Merkmalen des Anspruchs 1 gelöst. Bevorzugte Ausgestaltungen der Erfindung sind in den abhängigen Ansprüchen angegeben.The object is achieved according to the invention by a construction machine, in particular a vibrator, with the features of claim 1. Preferred embodiments of the invention are specified in the dependent claims.
Bei der erfindungsgemäßen Maschine ist unter anderem vorgesehen, dass der Hydraulikkreislauf mit dem Schmierkreislauf verbunden ist und dass das Fluid gleichzeitig als Hydraulikfluid vorgesehen ist. Mit dieser erfindungsgemäßen Ausgestaltung vereinfacht sich der Aufbau einer Baumaschine, insbesondere eines Rüttlers erheblich. Statt zwei separater Fluidkreisläufe mit den entsprechenden Einrichtungen, beispielsweise zum Pumpen, Kühlen, Filtern, Überwachen, sowie Ausgleichsbehälter, etc., ist erfindungsgemäß lediglich ein einziger kombinierter Fluidkreislauf vorgesehen, welcher sowohl für die Hydraulikantriebe als auch die Schmierung zuständig ist. Hierdurch werden einerseits die Anzahl der Komponenten der Maschine und andererseits der Aufwand zur Montage und Wartung erheblich vermindert. Auch der Betrieb der Maschine wird vereinfacht, da nunmehr lediglich ein einziges Fluid vorgesehen und bereitgestellt werden muss. Als Fluid kann insbesondere ein Öl eingesetzt werden, welches sowohl die notwendigen Eigenschaften eines Hydraulikfluides hinsichtlich Kompressibilität als auch die Eigenschaften eines Schmieröles, insbesondere hinsichtlich Schmierung und Kühlung erfüllt.Among other things, it is provided in the machine according to the invention that the hydraulic circuit is connected to the lubrication circuit and that the fluid is simultaneously provided as hydraulic fluid. With this embodiment of the invention, the structure of a construction machine, in particular a vibrator simplified considerably. Instead of two separate fluid circuits with the corresponding facilities, for example, for pumping, cooling, filtering, monitoring, and reservoir, etc., according to the invention, only a single combined fluid circuit is provided, which is responsible for both the hydraulic drives and the lubrication. As a result, on the one hand the number of components of the machine and on the other hand, the cost of installation and maintenance are significantly reduced. The operation of the machine is simplified, since now only a single fluid must be provided and provided. In particular, an oil can be used as fluid, which fulfills both the necessary properties of a hydraulic fluid with regard to compressibility and the properties of a lubricating oil, in particular with regard to lubrication and cooling.
Gemäß einer bevorzugten Ausführungsform der Erfindung ist vorgesehen, dass der Hydraulikkreislauf und der Schmierkreislauf über einen Verteilerblock miteinander leitungsverbunden sind. Ein derartiger Verteilerblock stellt eine robuste Verbindungsstelle für die beiden Kreisläufe dar und ermöglicht es, dass grundsätzlich auch bestehende Maschinen nachgerüstet werden können.According to a preferred embodiment of the invention, it is provided that the hydraulic circuit and the lubrication circuit are conductively connected to one another via a distributor block. Such a distribution block provides a robust connection point for the two circuits and makes it possible that in principle existing machines can be retrofitted.
Diese Anordnung ist nach der Erfindung in bevorzugter Weise dadurch weitergebildet, dass von der Hydraulikpumpe eine gemeinsame Zuführleitung zu dem Verteilerblock führt, wobei die Hydraulikpumpe sowohl den Hydraulikkreislauf als auch den Schmierkreislauf mit Fluid versorgt. Es ist somit lediglich eine einzige Zuführleitung von der Hydraulikpumpe zu der zentralen Verteilerstelle, dem Verteilerblock, vorzusehen.This arrangement is further developed according to the invention in a preferred manner that leads from the hydraulic pump, a common supply line to the manifold block, wherein the hydraulic pump supplies both the hydraulic circuit and the lubrication circuit with fluid. It is thus only a single supply line from the hydraulic pump to the central distribution point, the manifold block to provide.
Erfindungsgemäß ist vorgesehen, dass im Schmierkreislauf, insbesondere zwischen dem Verteilerblock und dem Getriebe, ein Stromregelventil angeordnet ist. Vorzugsweise ist zusätzlich im Schmierkreislauf zwischen dem Verteilerblock und dem Getriebe ein Druckschalter angeordnet. Mit dem Stromregelventil kann eine gewünschte Fluidmenge dem Getriebe zugeleitet werden. Gleichzeitig dient das Stromregelventil als eine Drossel, mit welcher der relativ hohe Druck in dem Hydraulikkreislauf, welcher bis zu mehreren 100 bar betragen kann, auf einen notwendigen, geringeren Druckwert des Schmierkreislaufes vermindert wird. Der Druck in dem Schmierkreislauf kann dabei um das Zehnfache geringer sein als der Druck in dem Hydraulikkreislauf oder sogar nur wenige bar betragen. Der Druckschalter dient zur Überwachung des Druckes, wobei durch die Kombination der beiden Kreisläufe insgesamt der Aufwand zur Kontrolle und Steuerung der Fluidkreisläufe insgesamt reduziert wird.According to the invention it is provided that in the lubrication circuit, in particular between the manifold block and the transmission, a flow control valve is arranged. Preferably, a pressure switch is additionally arranged in the lubrication circuit between the distributor block and the transmission. With the flow control valve, a desired amount of fluid can be supplied to the transmission. At the same time, the flow control valve serves as a throttle, with which the relatively high pressure in the hydraulic circuit, which can be up to several 100 bar, is reduced to a necessary, lower pressure value of the lubrication circuit. The pressure in the lubrication circuit can be ten times less than the pressure in the hydraulic circuit or even only a few bar. The pressure switch is used to monitor the pressure, the total of the effort to control and control the fluid circuits is reduced overall by the combination of the two circuits.
In bevorzugter Weise ist die Erfindung weiter dadurch fortgebildet, dass das Getriebe eine Bodenwanne zur Aufnahme des Fluids aufweist und dass eine Schmierpumpe vorgesehen ist, durch welche Fluid aus der Bodenwanne abpumpbar ist. Die Erfindung ist somit auch für herkömmliche, entlüftete Getriebe einsetzbar. Die zusätzliche Schmierpumpe muss dabei lediglich die relativ geringe Leistung für die Rückförderung des Fluides aus dem Getriebe zurück zum Fluidreservoir aufbringen.Preferably, the invention is further developed by the fact that the transmission has a bottom trough for receiving the fluid and that a lubricating pump is provided, through which fluid can be pumped out of the bottom trough. The invention can thus also be used for conventional, vented gear. The additional lubrication pump has to apply only the relatively low power for the return of the fluid from the transmission back to the fluid reservoir.
Weiter ist es bevorzugt, dass zur Rückführung des Fluides von dem mindestens einen Hydraulikantrieb und/oder von der Schmierpumpe diese mit einem Rücklaufbehälter leitungsverbunden sind, aus welcher das Fluid über die Hydraulikpumpe abführbar ist. Es ist dabei nur ein einziger Rücklaufbehälter oder ein Ausgleichsbehälter für die beiden Kreisläufe vorzusehen. Dies bringt ebenfalls eine weitere Vereinfachung des Aufbaus mit sich.It is further preferred for the return of the fluid from the at least one hydraulic drive and / or from the lubricating pump to be conductively connected to a return container, from which the fluid can be discharged via the hydraulic pump. It is to provide only a single return tank or a surge tank for the two circuits. This also brings a further simplification of the structure with it.
Eine zusätzliche Vereinfachung des Gesamtaufbaus wird erfindungsgemäß dadurch erreicht, dass zwischen dem Auffangbehälter und der Hydraulikpumpe ein Kühler und/oder ein Filter angeordnet sind.An additional simplification of the overall structure is inventively achieved in that between the collecting container and the hydraulic pump, a cooler and / or a filter are arranged.
Ein besonders sicherer Betrieb der erfindungsgemäßen Vorrichtung ist dadurch gegeben, dass im Schmierkreislauf zwischen dem Verteilerblock und dem Getriebe ein Spülventil vorgesehen ist, welches einen Zufluss von Fluid in das Getriebe bei stillstehendem Hydraulikantrieb verhindert. Das Spülventil kann dabei mit dem Verteilerblock und/oder dem mindestens einen Hydraulikantrieb rückgekoppelt sein, so dass nur bei Betrieb des Hydraulikantriebes Fluid in das Getriebe gelangen kann. Bei stillstehendem Hydraulikantrieb bzw. bei einer entsprechenden Druckverminderung der Fluidzuführung zu dem Hydraulikantrieb wird das Spülventil geschlossen, so dass von dem Verteilerblock kein Fluid in das Getriebe mehr gelangen kann.A particularly safe operation of the device according to the invention is given by the fact that a purge valve is provided in the lubrication circuit between the manifold block and the transmission, which prevents an inflow of fluid into the transmission with a stationary hydraulic drive. The flush valve may be fed back to the manifold block and / or the at least one hydraulic drive, so that only in operation of the hydraulic drive fluid in the Transmission can get. With a stationary hydraulic drive or with a corresponding reduction in pressure of the fluid supply to the hydraulic drive, the flush valve is closed, so that no fluid can get into the transmission of the manifold block more.
Die Erfindung wird nachfolgend anhand eines bevorzugten Ausführungsbeispieles weiter erläutert, welches stark schematisiert in den beiliegenden Zeichnungen dargestellt ist.The invention will be further elucidated on the basis of a preferred exemplary embodiment, which is shown very schematically in the attached drawings.
In den Zeichnungen zeigen:
- Fig. 1
- eine Prinzipskizze zu einem erfindungsgemäß ausgestalteten Rüttler und
- Fig. 2
- ein Hydraulikplan zu der Ausführungsform von Fig. 1.
- Fig. 1
- a schematic diagram of an inventively designed vibrator and
- Fig. 2
- a hydraulic plan to the embodiment of Fig. 1.
Eine erfindungsgemäße Baumaschine wird anhand eines Rüttlers 10 beschrieben, dessen wesentliche Komponenten in Fig. 1 dargestellt sind. An einem Mast 2 einer nicht weiter dargestellten Lafette ist ein Verschiebeschlitten 3 geführt, an welchem ein Gehäuse des Getriebes 22 des Rüttlers 10 befestigt ist. Am unteren Ende des Gehäuses des Getriebes 22 ist eine Halterung 4 angebracht, welche insbesondere zum Aufnehmen und Einbringen von Rammgut dient. Ein derartiger Rüttler ist grundsätzlich bekannt.A construction machine according to the invention is described with reference to a
Das Getriebe 22 umfasst zur Erzeugung von Schwingungen Exzenter 5, welche schematisch in Fig. 2 angedeutet sind. Die Exzenter 5 sind über Wellen und miteinander kämmende Verzahnungselemente in Verbindung und über zwei Hydraulikmotoren 12a, 12b drehend angetrieben. Die Unwuchten an den Exzentern 5 erzeugen bei einer rotierenden Bewegung gewünschte Vibrationen, welche zum Einbringen von Rammgut eingesetzt werden können. Die Hydraulikmotoren 12a, 12b sind an der Außenseite des Gehäuses des Getriebes 22 angeflanscht. Unterhalb der Hydraulikmotoren 12a, 12b ist weiter eine Schmierpumpe 23 angebracht, deren Funktion nachfolgend im Zusammenhang mit den Figuren 1 und 2 beschrieben wird.The
Über eine nur schematisch dargestellte Hydraulikpumpe 14 wird ein Fluid, welches nach der Erfindung sowohl als Hydraulikfluid als auch als Schmieröl dient, über eine gemeinsame Zuführleitung 32 zu einem Verteilerblock 30 geführt, welcher eine Leitungsverbindung zwischen einem Hydraulikkreislauf 15 und einem Schmierkreislauf 25 darstellt.A fluid, which according to the invention serves both as hydraulic fluid and as lubricating oil, is guided via a
Von dem Verteilerblock 30 werden die beiden Hydraulikantriebe 12a, 12b über Hydraulikzuleitungen 17a, 17b mit dem Fluid versorgt. Die Rückführung des Fluides erfolgt über Rückführleitungen 19a, 19b zu dem Verteilerblock 30, aus welchem das Fluid über eine erste Rücklaufleitung 34 erfolgt. Die Drehmomente der Hydraulikmotoren 12a, 12b werden bestimmungsgemäß mittels entsprechender Antriebswellen auf die Wellen des Getriebes 22 übertragen.From the
Zur Schmierung und Kühlung des Getriebes 22 wird in dem Schmierkreislauf 25 dasselbe Fluid wie in dem Hydraulikkreislauf 15 verwendet. Hierzu wird das Fluid aus dem Verteilerblock 30 über die beiden alternativen Zuleitungen 27a zu einem Spülventil 28 geleitet. Das Spülventil 28 ist so ausgebildet und geschaltet, dass dieses nur dann geöffnet ist, wenn zumindest einer der beiden Hydraulikmotoren 12a, 12b in Betrieb ist. Sollte auf keiner der beiden Leitungen 27a ein Druck anliegen und damit kein Hydraulikmotor 12a, 12b in Betrieb sein, so schließt das Spülventil 28 und verhindert damit die Einleitung von Fluid in das Getriebe 22.For lubrication and cooling of the
Umgekehrt stellt das Spülventil 28 sicher, dass bei Betrieb zumindest einer der beiden Hydraulikmotoren 12a, 12b Fluid zur Schmierung und Kühlung in das Getriebe 22 geleitet wird. Die Weiterleitung des Fluides von dem Spülventil 28 erfolgt über die Schmierleitungen 27b und 27c, zwischen denen ein Stromregelventil 24 zwischengeschaltet ist. Das Stromregelventil 24 hat im Wesentlichen die Funktion einer einstellbaren Drossel, mit welcher sowohl die Menge der Fluidzuleitung als auch der Fluiddruck gesteuert werden kann. Beispielsweise können über das Stromregelventil etwa 20 bis 25 Liter Fluid pro Minute in das Getriebe 22 an die gewünschten Lager und Kühlungsstellen eingespritzt werden. Der Fluiddruck wird dabei von einigen 100 bar auf wenige bar reduziert. Im Verlauf der Schmierleitung 27c ist weiter ein Druckschalter 26 angeordnet, welcher zur Messung und Überwachung des Leitungsdruckes dient.Conversely, the
Das Fluid wird zur Schmierung und Kühlung an die gewünschten Stellen in dem Getriebe 22 eingeleitet, wobei sich das Fluid entsprechend der Schwerkraft in einer nicht näher dargestellten Bodenwanne sammelt. Aus dieser wird es mittels einer Schmierleitung 27d über eine Schmierpumpe 23 abgepumpt, welche unmittelbar durch das Getriebe 22 über eine entsprechende Antriebswelle angetrieben wird. Auf diese Weise ist sichergestellt, dass die Schmierpumpe 23 nur dann betrieben wird, wenn auch das Getriebe 22 in Betrieb gesetzt ist. Die Schmierpumpe 23 stellt den ausreichenden Pumpdruck zur Verfügung, um das Fluid über eine zweite Rücklaufleitung 36 rückzuführen.The fluid is introduced for lubrication and cooling to the desired locations in the
Sowohl die erste Rücklaufleitung 34 als auch die zweite Rücklaufleitung 36 führen zu nicht weiter dargestellten Aufbereitungseinrichtungen, welche insbesondere die Kühlung, das Filtern etc. betrifft. Üblicherweise ist auch ein Rücklauf- oder Ausgleichsbehälter als Fluidverservoir vorgesehen, aus welcher dann die Hydraulikpumpe 14 das Fluid erneut in den kombinierten Fluidkreislauf einspeist.Both the
Durch die erfindungsgemäße Kombination des Schmierkreislaufes mit dem Hydraulikkreislauf wird der Aufwand für doppelte Elemente wie Schlauchleitungen, Rohre, Filter und Kühler eingespart. Außerdem sind keine separaten Überwachungen der beiden Kreisläufe durch Druckaufnehmer, Temperaturfühler und Volumenstromaufnehmer sowie deren entsprechende Anzeige an einem Bedienerpult notwendig.The inventive combination of the lubrication circuit with the hydraulic circuit, the cost of duplicate elements such as hose lines, pipes, filters and coolers is saved. In addition, no separate monitoring of the two circuits by pressure transducers, temperature sensors and volume flow sensors and their corresponding display on a control panel are necessary.
Claims (9)
- Construction machine, in particular vibrator, comprising- at least one hydraulic drive (12), which is arranged together with a hydraulic pump (14) in a hydraulic circuit (15),- at least one transmission (22), in which a fluid is provided for lubrication and/or cooling, which circulates in a lubricating circuit (25),- wherein the hydraulic circuit (15) is connected with the lubricating circuit (25) and the fluid is provided at the same time as hydraulic fluid, and- wherein a flow-regulating valve (24) is provided in the lubricating circuit (25) in order to control the quantity of fluid supplied to the transmission (22).
- Construction machine according to claim 1,
characterized in that
the hydraulic circuit (15) and the lubricating circuit (25) are connected to each other via lines through a distributor block (30). - Construction machine according to claim 2,
characterized in that
a common supply line (32) runs from the hydraulic pump (14) to the distributor block (30), wherein the hydraulic pump (14) supplies fluid to both the hydraulic circuit (15) and the lubricating circuit (25). - Construction machine according to claim 2 or 3,
characterized in that
a pressure switch (26) is arranged in the lubricating circuit (25) between the distributor block (30) and the transmission (22). - Construction machine according to any one of claims 2 to 4,
characterized in that
the flow-regulating valve (24) is arranged between the distributor block (30) and the transmission (22) in the lubricating circuit (25). - Construction machine according to any one of claims 1 to 5,
characterized in that
the transmission (22) has a bottom trough for the reception of the fluid and
in that a lubricant pump (23) is provided through which fluid can be pumped out of the bottom trough. - Construction machine according to any one of claims 1 to 6,
characterized in that
to return the fluid from the at least one hydraulic drive (12) and/or from the lubricant pump (23) they are connected via lines with a return reservoir, from which the fluid can be discharged via the hydraulic pump (14). - Construction machine according to claim 7,
characterized in that
a cooler and/or filter is arranged between the return reservoir and the hydraulic pump (14). - Construction machine according to any one of claims 2 to 8,
characterized in that
in the lubricating circuit (25) a flush valve (28) is provided between the distributor block (30) and the transmission (22), which prevents a flow of fluid into the transmission (22) when the hydraulic drive (12) is idle.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2001115260 DE10115260C2 (en) | 2001-03-28 | 2001-03-28 | Construction machine for generating vibrations |
| DE10115260 | 2001-03-28 |
Publications (4)
| Publication Number | Publication Date |
|---|---|
| EP1245737A2 EP1245737A2 (en) | 2002-10-02 |
| EP1245737A3 EP1245737A3 (en) | 2002-12-11 |
| EP1245737B1 true EP1245737B1 (en) | 2007-12-12 |
| EP1245737B2 EP1245737B2 (en) | 2015-09-30 |
Family
ID=7679370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02000980.9A Expired - Lifetime EP1245737B2 (en) | 2001-03-28 | 2002-01-16 | Hydraulic vibrator |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP1245737B2 (en) |
| DE (2) | DE10115260C2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006053093A1 (en) * | 2006-11-10 | 2008-05-15 | Bomag Gmbh | oil lubrication |
| DE502007001542D1 (en) | 2007-05-10 | 2009-10-29 | Bauer Maschinen Gmbh | Construction machine for generating vibrations |
| DE202015002714U1 (en) | 2015-04-13 | 2016-07-14 | Liebherr-Werk Nenzing Gmbh | shaker |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4039167A (en) * | 1976-08-02 | 1977-08-02 | Zinga Industries Inc. | Hydraulic vibrator |
| US4861252A (en) * | 1986-09-11 | 1989-08-29 | International Pipe Machinery Corp. | Vibrator type concrete pipe making machines having combined lubrication and cooling system |
| US5355964A (en) * | 1993-07-12 | 1994-10-18 | White John L | Pile driving and/or pile pulling vibratory assembly with counterweights |
| AU692479B2 (en) * | 1993-11-30 | 1998-06-11 | Sakai Heavy Industries, Ltd. | Vibrating mechanism and apparatus for generating vibrations for a vibration compacting roller with a variable amplitude |
-
2001
- 2001-03-28 DE DE2001115260 patent/DE10115260C2/en not_active Expired - Fee Related
-
2002
- 2002-01-16 EP EP02000980.9A patent/EP1245737B2/en not_active Expired - Lifetime
- 2002-01-16 DE DE50211335T patent/DE50211335D1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE10115260A1 (en) | 2002-10-24 |
| DE10115260C2 (en) | 2003-04-30 |
| EP1245737A2 (en) | 2002-10-02 |
| EP1245737B2 (en) | 2015-09-30 |
| DE50211335D1 (en) | 2008-01-24 |
| EP1245737A3 (en) | 2002-12-11 |
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