EP1413772B1 - Low noise hydraulic power unit - Google Patents

Low noise hydraulic power unit Download PDF

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Publication number
EP1413772B1
EP1413772B1 EP03021586A EP03021586A EP1413772B1 EP 1413772 B1 EP1413772 B1 EP 1413772B1 EP 03021586 A EP03021586 A EP 03021586A EP 03021586 A EP03021586 A EP 03021586A EP 1413772 B1 EP1413772 B1 EP 1413772B1
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EP
European Patent Office
Prior art keywords
frame
reservoir
motor
pump
power unit
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
Application number
EP03021586A
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German (de)
French (fr)
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EP1413772A1 (en
Inventor
Alfons Herr
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Bosch Rexroth AG
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Bosch Rexroth AG
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/008—Reduction of noise or vibration
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B23/00—Pumping installations or systems
    • F04B23/02—Pumping installations or systems having reservoirs
    • F04B23/025—Pumping installations or systems having reservoirs the pump being located directly adjacent the reservoir
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B23/00—Pumping installations or systems
    • F04B23/04—Combinations of two or more pumps
    • F04B23/06—Combinations of two or more pumps the pumps being all of reciprocating positive-displacement type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/001—Noise damping
    • F04B53/002—Noise damping by encapsulation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
    • F15B1/26—Supply reservoir or sump assemblies

Definitions

  • the invention relates to a low-noise hydraulic power unit, in the manner of a cuboid on all sides Frame is formed, according to the preamble of the claim 1.
  • One Reservoir for hydraulic pressure medium in U-shape encloses from three sides a motor pump group that out an air-cooled electric motor and a driven by this Pump is formed.
  • the reservoir forms while three side walls of a cuboid frame whose Floor is formed by a base plate.
  • the frame is completed laterally by a first insulating wall, the so arranged between the legs of the reservoir, that it forms the fourth side wall of the cuboid frame.
  • At the top is the cuboid frame by a second Insulation wall completed, which rests on the reservoir and the ceiling of the frame forms.
  • the engine-pump group is arranged horizontally in a reception room, by the base plate, three side walls formed by the reservoir and two Dämmdevn is enclosed.
  • the engine-pump group is via vibration damper on the base plate held the frame.
  • This structural design of the Hydraulic unit allows a very good noise reduction.
  • the lateral insulating wall and also as Dämmwand trained blanket can be easily inserted into the frame and release it from the frame if necessary. This facilitates not only in the production of the hydraulic unit the Assembly of the individual components inside the frame but also allows a good accessibility of the later individual components, eg. B. for maintenance or Repairs.
  • the invention is based on the object, a hydraulic unit of the type mentioned above to create an increase the number of motor-pump groups allowed, without the individual Insulating walls corresponding to the base of the hydraulic unit to enlarge.
  • FIG. 1 shows a horizontal section through an invention trained hydraulic unit, along the in the figure 2 with C - D line is guided.
  • the FIG. 2 shows a vertical section through the hydraulic unit, the along the designated in Figure 1 with A - B Line is guided. Since the figures 1 and 2 in their Complete illustration of the hydraulic unit, respectively The following description refers both to FIG. 1 as also to the figure 2.
  • the hydraulic unit has the shape of a closed on all sides cuboidal frame 10.
  • the bottom of the frame 10 forms a base plate 11, which consists of two in one another placed and welded tubs 11u and 11o is formed. While the bottom pan 11u on a foundation 12 rests, is at the upper trough 11o an H-shaped Reservoir 13 for receiving hydraulic fluid held.
  • the tub 11o forms the bottom of the reservoir 13.
  • Two sections 13 a and 13 b of the reservoir 13 form a first side wall of the frame 10.
  • Two more sections 13c and 13d of the reservoir 13 form a second side wall of the frame 10.
  • the two side walls of the Frame 10 are connected by a transverse wall 13e.
  • a first lateral insulating wall 15 is arranged, which is another Side wall of the frame 10 forms.
  • the insulating wall 15 is located two vertically arranged angle sections 16, 17 and at two horizontally arranged angle sections 18, 19 at.
  • a second lateral insulating wall 20 is arranged, which is the fourth Side wall of the frame 10 forms.
  • the insulating wall 20 is located two vertically arranged angle sections 21, 22 and two horizontally arranged angle sections 23, 24 at.
  • the section 13a, the transverse wall 13e, the section 13c and the insulating wall 15 enclose a first receiving space 25, the down through the base plate 11 and up through a Dämmwand 28 is completed.
  • the insulating wall 28 is located on the Angular profile 18, held on a portion 13 a on the Angled section 29, an angle profile held on the transverse wall 13e 30 and on a not visible in Figures 1 and 2 another angle profile held on the portion 13c is on.
  • the section 13b, the transverse wall 13e, the section 13d and the insulating wall 20 enclose a second Receiving space 32, the down through the base plate 11 and is completed at the top by another insulating wall 33.
  • the insulating wall 33 rests on the angle section 24, on a held on the section 13b angle profile 35, on a the transverse wall 13e held angle section 36 and on a in Figures 1 and 2 not visible further angle profile, which is held on the portion 13d, on.
  • Each of the motor-pump groups has an electric motor M, each having two hydraulic pumps P1 and P2 drives.
  • the electric motor M is on a motor carrier T fastened, in turn, via damping elements D on the upper tray 11o of the base plate 11 is held.
  • the Motor-pump groups 40 to 42 are arranged horizontally.
  • the Pumps P1 and P2 face the transverse wall 13e. Of the Pump P1 leads a suction line S1 into the transverse wall 13e of the Reservoir 13 for the hydraulic pressure medium. In Similarly, leads from the pump P2, a suction line S2 in the transverse wall 13e. This measure allows the suction lines Keep S1 and S2 of pumps P1 and P2 short.
  • the Motor-pump groups 44 to 46 also have an electric motor M on, each of two held on him hydraulic pumps P1 and P2 drives.
  • the pumps P1 and P2 of the motor-pump groups 44 to 46 are like the corresponding pumps of the motor-pump groups 40 to 42 facing the transverse wall 13e, wherein of the Pumps P1 and P2 each have a suction line S1 or S2 in the transverse wall 13e of the reservoir 13 for the hydraulic pressure medium leads.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Valve Device For Special Equipments (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

A low-noise hydraulic system is installed within a rectangular frame (10) on a base plate (11) which also forms the base of a hydraulic reservoir (13). The reservoir forms at least two of the frame sidewalls. The other sidewalls are noise-insulating sidewalls (20, 33). The unit also encloses several groups of pumps (40, 41, 42) fixed to the base-plate. The reservoir forms two sidewall (13a, 13b; 13c, 13d) sections of the frame. One transverse sidewall (13e) links the two sidewalls to form an H-shaped group. The motor pump groups are located within two compartments.

Description

Die Erfindung betrifft ein geräuscharmes Hydraulikaggregat, das in der Art eines allseitig geschlossenen quaderförmigen Rahmens ausgebildet ist, gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a low-noise hydraulic power unit, in the manner of a cuboid on all sides Frame is formed, according to the preamble of the claim 1.

Ein derartiges Hydraulikaggregat ist aus der Zeitschrift "Technische Rundschau", 2001, Nr. 6, Seiten 34 und 35, ,insbesondere Bild 2 und die zugehörige Beschreibung, bekannt. Ein Vorratsbehälter für hydraulisches Druckmittel in U-Form umschließt von drei Seiten eine Motor-Pumpe-Gruppe, die aus einem luftgekühlten Elektromotor und einer von diesem angetriebenen Pumpe gebildet ist. Der Vorratsbehälter bildet dabei drei Seitenwände eines quaderförmigen Rahmens, dessen Boden von einer Grundplatte gebildet ist. Der Rahmen ist seitlich durch eine erste Dämmwand abgeschlossen, die so zwischen den Schenkeln des Vorratsbehälters angeordnet ist, daß sie die vierte Seitenwand des quaderförmigen Rahmens bildet. Nach oben ist der quaderförmige Rahmen durch eine zweite Dämmwand abgeschlossen, die auf dem Vorratsbehälter aufliegt und die Decke des Rahmens bildet. Die Motor-Pumpe-Gruppe ist waagerecht liegend in einem Aufnahmeraum angeordnet, der von der Grundplatte, drei von dem Vorratsbehälter gebildeten Seitenwänden sowie zwei Dämmwänden umschlossen ist. Die Motor-Pumpe-Gruppe ist über Schwingungsdämpfer an der Grundplatte des Rahmens gehalten. Diese konstruktive Ausgestaltung des Hydraulikaggregats ermöglicht eine sehr gute Geräuschdämpfung. Die seitliche Dämmwand und die ebenfalls als Dämmwand ausgebildete Decke lassen sich leicht in den Rahmen einsetzen und bei Bedarf wieder von dem Rahmen lösen. Dies erleichtert nicht nur bei der Fertigung des Hydraulikaggregats die Montage der einzelnen Komponenten im Inneren des Rahmens sondern erlaubt auch später eine gute Zugänglichkeit der einzelnen Komponenten, z. B. für Wartungsarbeiten oder Reparaturen.Such a hydraulic unit is from the magazine "Technical Review", 2001, No. 6, pages 34 and 35, in particular Picture 2 and the corresponding description, known. One Reservoir for hydraulic pressure medium in U-shape encloses from three sides a motor pump group that out an air-cooled electric motor and a driven by this Pump is formed. The reservoir forms while three side walls of a cuboid frame whose Floor is formed by a base plate. The frame is completed laterally by a first insulating wall, the so arranged between the legs of the reservoir, that it forms the fourth side wall of the cuboid frame. At the top is the cuboid frame by a second Insulation wall completed, which rests on the reservoir and the ceiling of the frame forms. The engine-pump group is arranged horizontally in a reception room, by the base plate, three side walls formed by the reservoir and two Dämmwänden is enclosed. The engine-pump group is via vibration damper on the base plate held the frame. This structural design of the Hydraulic unit allows a very good noise reduction. The lateral insulating wall and also as Dämmwand trained blanket can be easily inserted into the frame and release it from the frame if necessary. This facilitates not only in the production of the hydraulic unit the Assembly of the individual components inside the frame but also allows a good accessibility of the later individual components, eg. B. for maintenance or Repairs.

Diese Hydraulikaggregate wurden in der Weise weiter entwikkelt, daß in dem Aufnahmeraum mehrere Motor-Pumpe-Gruppen nebeneinander angeordnet sind. Derartige Konstruktionen benötigen eine größere Grundfläche als Hydraulikaggregate mit nur einer Motor-Pumpe-Gruppe. Dies führt zu einer entsprechenden Vergrößerung der Fläche der seitlichen Dämmwand und der oberen Dämmwand. Damit sich die Dämmwände nicht durchbiegen, sind zusätzliche konstruktive Maßnahmen, wie eine Verstärkung der Dämmwände oder zusätzliche Abstützungen erforderlich. Diese Maßnahmen führen, insbesondere im Fall der oberen Dämmwand, zu einer Erhöhung ihres Gewichts und/oder im Fall von zusätzlichen Abstützungen zu einer Verschlechterung der Zugänglichkeit des Aufnahmeraums bei der Montage, Wartung und Reparatur.These hydraulic units were further developed in this way, that in the receiving space several motor-pump groups are arranged side by side. Such constructions require a larger footprint than hydraulic power units with only one engine-pump group. This leads to a corresponding Enlargement of the surface of the lateral insulating wall and the upper insulating wall. So that the insulating walls do not bend, are additional design measures, such as a reinforcement the Dämmwände or additional supports required. These measures lead, in particular in the case of upper insulating wall, to increase their weight and / or in the Case of additional supports to deterioration the accessibility of the receiving space during assembly, maintenance and repair.

Der Erfindung liegt die Aufgabe zugrunde, ein Hydraulikaggregat der eingangs genannten Art zu schaffen, das eine Erhöhung der Anzahl der Motor-Pumpe-Gruppen erlaubt, ohne die einzelnen Dämmwände entsprechend der Grundfläche des Hydraulikaggregats vergrößern zu müssen. The invention is based on the object, a hydraulic unit of the type mentioned above to create an increase the number of motor-pump groups allowed, without the individual Insulating walls corresponding to the base of the hydraulic unit to enlarge.

Diese Aufgabe wird durch die im Anspruch 1 gekennzeichneten Merkmale gelöst. Die Unterteilung des Rahmens in zwei getrennte Aufnahmeräume erlaubt es, für die obere Wand des Rahmens des Hydraulikaggregats Dämmplatten zu verwenden, deren Fläche kleiner als die gesamte Grundfläche des Hydraulikaggregats ist. In gleicher Weise können für die den Rahmen seitlich abschließende Wand Dämmplatten verwendet werden, deren Breite kleiner als die gesamte Länge der Grundplatte ist. Die Verbindung der Seitenwände des Vorratsbehälters durch die Querwand erlaubt darüber hinaus eine besonders stabile Konstruktion des Rahmens des Hydraulikaggregats, ohne daß die Zugänglichkeit der Aufnahmeräume behindernde zusätzliche Abstützungen erforderlich sind.This object is characterized by that defined in claim 1 Characteristics solved. The subdivision of the frame into two separate ones Recording rooms allow for the upper wall of the Frame of the hydraulic unit to use insulation boards whose area is smaller than the entire base area of the hydraulic unit is. In the same way can for the the frame laterally final wall insulation panels are used whose width is smaller than the entire length of the base plate is. The connection of the side walls of the reservoir through the transverse wall also allows a particularly stable Construction of the frame of the hydraulic unit, without that the accessibility of the receiving spaces obstructing additional Supports are required.

Vorteilhafte Weiterbildungen der Erfindung sind in den Unteransprüchen gekennzeichnet. Ein symmetrischer Aufbau ergibt sich, wenn die Motor-Pumpe-Gruppen gleichmäßig auf die beiden Aufnahmeräume verteilt sind. Wenn die Motor-Pumpe-Gruppen in den Aufnahmeräumen derart nebeneinander liegend angeordnet sind, daß die Pumpen der Querwand zugewandt sind, lassen sich besonders kurze Saugleitungen realisieren.Advantageous developments of the invention are in the dependent claims characterized. A symmetrical construction results itself when the motor pump groups evenly on the two Recording rooms are distributed. When the engine pump groups in the receiving spaces arranged side by side so lying are that the pumps are facing the transverse wall, can be realize particularly short suction lines.

Die Erfindung wird im folgenden mit ihren weiteren Einzelheiten anhand eines in den Zeichnungen dargestellten Ausführungsbeispiels näher erläutert. Es zeigen

Figur 1
einen waagerechten Schnitt durch ein erfindungsgemäß ausgebildetes Hydraulikaggregat und
Figur 2
einen senkrechten Schnitt durch das in der Figur 1 dargestellte Hydraulikaggregat.
The invention will be explained in more detail below with its further details with reference to an embodiment shown in the drawings. Show it
FIG. 1
a horizontal section through an inventively designed hydraulic unit and
FIG. 2
a vertical section through the hydraulic unit shown in the figure 1.

Die Figur 1 zeigt einen waagerechten Schnitt durch ein erfindungsgemäß ausgebildetes Hydraulikaggregat, der entlang der in der Figur 2 mit C - D bezeichneten Linie geführt ist. Die Figur 2 zeigt einen senkrechten Schnitt durch das Hydraulikaggregat, der entlang der in der Figur 1 mit A - B bezeichneten Linie geführt ist. Da sich die Figuren 1 und 2 in ihrer Darstellung des Hydraulikaggregats jeweils ergänzen, bezieht sich die folgende Beschreibung sowohl auf die Figur 1 als auch auf die Figur 2.FIG. 1 shows a horizontal section through an invention trained hydraulic unit, along the in the figure 2 with C - D line is guided. The FIG. 2 shows a vertical section through the hydraulic unit, the along the designated in Figure 1 with A - B Line is guided. Since the figures 1 and 2 in their Complete illustration of the hydraulic unit, respectively The following description refers both to FIG. 1 as also to the figure 2.

Das Hydraulikaggregat weist die Form eines allseitig geschlossenen quaderförmigen Rahmens 10 auf. Den Boden des Rahmens 10 bildet eine Grundplatte 11, die aus zwei ineinander gestellten und miteinander verschweißten Wannen 11u und 11o gebildet ist. Während die untere Wanne 11u auf einem Fundament 12 aufliegt, ist an der oberen Wanne 11o ein H-förmiger Vorratsbehälter 13 für die Aufnahme von Hydraulikflüssigkeit gehalten. Die Wanne 11o bildet den Boden des Vorratsbehälters 13. Zwei Abschnitte 13a und 13b des Vorratsbehälters 13 bilden eine erste Seitenwand des Rahmens 10. Zwei weitere Abschnitte 13c und 13d des Vorratsbehälters 13 bilden eine zweite Seitenwand des Rahmens 10. Die beiden Seitenwände des Rahmens 10 sind durch eine Querwand 13e verbunden. Zwischen den Abschnitten 13a und 13c des Vorratsbehälters 13 ist eine erste seitliche Dämmwand 15 angeordnet, die eine weitere Seitenwand des Rahmens 10 bildet. Die Dämmwand 15 liegt an zwei senkrecht angeordneten Winkelprofilen 16, 17 sowie an zwei waagerecht angeordneten Winkelprofilen 18, 19 an. Zwischen den Abschnitten 13b und 13d des Vorratsbehälters 13 ist eine zweite seitliche Dämmwand 20 angeordnet, die die vierte Seitenwand des Rahmens 10 bildet. Die Dämmwand 20 liegt an zwei senkrecht angeordneten Winkelprofilen 21, 22 sowie an zwei waagerecht angeordneten Winkelprofilen 23, 24 an.The hydraulic unit has the shape of a closed on all sides cuboidal frame 10. The bottom of the frame 10 forms a base plate 11, which consists of two in one another placed and welded tubs 11u and 11o is formed. While the bottom pan 11u on a foundation 12 rests, is at the upper trough 11o an H-shaped Reservoir 13 for receiving hydraulic fluid held. The tub 11o forms the bottom of the reservoir 13. Two sections 13 a and 13 b of the reservoir 13 form a first side wall of the frame 10. Two more sections 13c and 13d of the reservoir 13 form a second side wall of the frame 10. The two side walls of the Frame 10 are connected by a transverse wall 13e. Between the sections 13 a and 13 c of the reservoir 13 is a first lateral insulating wall 15 is arranged, which is another Side wall of the frame 10 forms. The insulating wall 15 is located two vertically arranged angle sections 16, 17 and at two horizontally arranged angle sections 18, 19 at. Between the sections 13b and 13d of the reservoir 13 is a second lateral insulating wall 20 is arranged, which is the fourth Side wall of the frame 10 forms. The insulating wall 20 is located two vertically arranged angle sections 21, 22 and two horizontally arranged angle sections 23, 24 at.

Der Abschnitt 13a, die Querwand 13e, der Abschnitt 13c und die Dämmwand 15 umschließen einen ersten Aufnahmeraum 25, der nach unten durch die Grundplatte 11 und nach oben durch eine Dämmwand 28 abgeschlossen ist. Die Dämmwand 28 liegt auf dem Winkelprofil 18, auf einem an dem Abschnitt 13a gehaltenen Winkelprofil 29, einem an der Querwand 13e gehaltenen Winkelprofil 30 sowie auf einem in den Figuren 1 und 2 nicht sichtbaren weiteren Winkelprofil, das an dem Abschnitt 13c gehalten ist, auf. Der Abschnitt 13b, die Querwand 13e, der Abschnitt 13d und die Dämmwand 20 umschließen einen zweiten Aufnahmeraum 32, der nach unten durch die Grundplatte 11 und nach oben durch eine weitere Dämmwand 33 abgeschlossen ist. Die Dämmwand 33 liegt auf dem Winkelprofil 24, auf einem an dem Abschnitt 13b gehaltenen Winkelprofil 35, auf einem an der Querwand 13e gehaltenen Winkelprofil 36 sowie auf einem in den Figuren 1 und 2 nicht sichtbaren weiteren Winkelprofil, das an dem Abschnitt 13d gehalten ist, auf.The section 13a, the transverse wall 13e, the section 13c and the insulating wall 15 enclose a first receiving space 25, the down through the base plate 11 and up through a Dämmwand 28 is completed. The insulating wall 28 is located on the Angular profile 18, held on a portion 13 a on the Angled section 29, an angle profile held on the transverse wall 13e 30 and on a not visible in Figures 1 and 2 another angle profile held on the portion 13c is on. The section 13b, the transverse wall 13e, the section 13d and the insulating wall 20 enclose a second Receiving space 32, the down through the base plate 11 and is completed at the top by another insulating wall 33. The insulating wall 33 rests on the angle section 24, on a held on the section 13b angle profile 35, on a the transverse wall 13e held angle section 36 and on a in Figures 1 and 2 not visible further angle profile, which is held on the portion 13d, on.

In dem Aufnahmeraum 25 sind drei Motor-Pumpe-Gruppen 40, 41, 42 nebeneinander angeordnet. Jede der Motor-Pumpe-Gruppen weist einen Elektromotor M auf, der jeweils zwei Hydropumpen P1 und P2 antreibt. Der Elektromotor M ist an einem Motorträger T befestigt, der seinerseits über Dämpfungselemente D an der oberen Wanne 11o der Grundplatte 11 gehalten ist. Die Motor-Pumpe-Gruppen 40 bis 42 sind liegend angeordnet. Die Pumpen P1 und P2 sind der Querwand 13e zugewandt. Von der Pumpe P1 führt eine Saugleitung S1 in die Querwand 13e des Vorratsbehälters 13 für das hydraulische Druckmittel. In gleicher Weise führt von der Pumpe P2 eine Saugleitung S2 in die Querwand 13e. Diese Maßnahme erlaubt es, die Saugleitungen S1 und S2 der Pumpen P1 bzw. P2 kurz zu halten.In the receiving space 25 are three motor-pump groups 40, 41, 42 arranged side by side. Each of the motor-pump groups has an electric motor M, each having two hydraulic pumps P1 and P2 drives. The electric motor M is on a motor carrier T fastened, in turn, via damping elements D on the upper tray 11o of the base plate 11 is held. The Motor-pump groups 40 to 42 are arranged horizontally. The Pumps P1 and P2 face the transverse wall 13e. Of the Pump P1 leads a suction line S1 into the transverse wall 13e of the Reservoir 13 for the hydraulic pressure medium. In Similarly, leads from the pump P2, a suction line S2 in the transverse wall 13e. This measure allows the suction lines Keep S1 and S2 of pumps P1 and P2 short.

In dem zweiten Aufnahmeraum 32 sind drei weitere Motor-Pumpe-Gruppen 44, 45, 46 nebeneinander liegend angeordnet. Die Motor-Pumpe-Gruppen 44 bis 46 weisen ebenfalls einem Elektromotor M auf, der jeweils zwei an ihm gehaltene Hydropumpen P1 und P2 antreibt. Die Pumpen P1 und P2 der Motor-Pumpe-Gruppen 44 bis 46 sind wie die entsprechenden Pumpen der Motor-Pumpe-Gruppen 40 bis 42 der Querwand 13e zugewandt, wobei von den Pumpen P1 und P2 je eine Saugleitung S1 bzw. S2 in die Querwand 13e des Vorratsbehälters 13 für das hydraulische Druckmittel führt.In the second receiving space 32 are three more motor-pump groups 44, 45, 46 arranged side by side. The Motor-pump groups 44 to 46 also have an electric motor M on, each of two held on him hydraulic pumps P1 and P2 drives. The pumps P1 and P2 of the motor-pump groups 44 to 46 are like the corresponding pumps of the motor-pump groups 40 to 42 facing the transverse wall 13e, wherein of the Pumps P1 and P2 each have a suction line S1 or S2 in the transverse wall 13e of the reservoir 13 for the hydraulic pressure medium leads.

Im Gegensatz zu einem beim Stand der Technik eingesetzten Vorratsbehälter mit einem U-förmigen Querschnitt, bei dem sich die Dämmwände über sämtliche Motor-Pumpe-Gruppen erstrecken, brauchen die Dämmwände 15, 20, 28 und 33 bei einem Vorratsbehälter mit H-förmigem Querschnitt gemäß der Erfindung jeweils nur einen der Aufnahmeräume 25 bzw. 32 zu verschließens. Die erfindungsgemäße Ausgestaltung des Vorratsbehälters 13 ermöglicht daher Dämmwände, die kleinere Abmessungen besitzen als dies beim Stand der Technik der Fall ist. In contrast to a used in the prior art Reservoir with a U-shaped cross-section, in which the insulating walls extend over all engine-pump groups, need the insulating walls 15, 20, 28 and 33 at a Reservoir with H-shaped cross section according to the invention only one of the receiving spaces 25 and 32 to be closed. The inventive design of the reservoir 13 therefore allows Dämmwände, the smaller dimensions possess as in the prior art, the case.

Abweichend von dem in den Figuren 1 und 2 dargestellten Ausführungsbeispiel, bei dem die einzelnen Motor-Pumpe-Gruppen liegend in den beiden Aufnahmeräumen angeordnet sind, ist es auch möglich, die Motor-Pumpe-Gruppen stehend anzuordnen, wobei der Elektromotor vorzugsweise jeweils oberhalb der Hydropumpe (bzw. der Hydropumpen) angeordnet ist.Notwithstanding the embodiment shown in Figures 1 and 2, where the individual engine-pump groups lying in the two receiving spaces are arranged, it is also possible to arrange the motor-pump groups upright, wherein the electric motor is preferably above the Hydro pump (or the hydraulic pump) is arranged.

Claims (3)

  1. A low-noise hydraulic power unit which is designed in the manner of a cuboid frame (10) closed on all sides,
    having a base plate (11) forming the base of the frame,
    having a reservoir (13) for hydraulic pressure fluid which forms at least two walls of the frame,
    having a plurality of motor-pump groups (40 to 42, 44 to 46) held on the base plate, each formed from an electric motor (M) and at least one pump (P1, P2) driven thereby, and
    in which the further walls of the frame are designed as insulating walls,
    characterized by the fact that
    the reservoir (13) forms two side walls (13a and 13b, 13c and 13d) of the frame (10),
    that a cross wall (13e) connects the two side walls (13a and 13b, 13c and 13d) to one another in such a manner that the reservoir (13) has an H-shaped cross section, whereby, between the cross wall (13e) and two sections (13a and 13c, 13b and 13d) of the side walls (13a and 13b, 13c and 13d) adjacent to the cross wall (13e) and lying opposite each other there extends a receiving space (25, 32) in each case, and
    that the motor-pump groups (40 to 42, 44 to 46) are arranged in the receiving spaces (25, 32).
  2. A hydraulic power unit according to claim 1, characterized by the fact that the motor-pump groups (40 to 42, 44 to 46) are distributed evenly between the receiving spaces (25, 32).
  3. A hydraulic power unit according to claim 1 or claim 2, characterized by the fact that the motor-pump groups (40 to 42, 44 to 46) are arranged lying alongside each other in such a manner that the pumps (P1, P2) face the cross wall (13e).
EP03021586A 2002-10-22 2003-09-25 Low noise hydraulic power unit Expired - Lifetime EP1413772B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10249337 2002-10-22
DE10249337A DE10249337A1 (en) 2002-10-22 2002-10-22 Low-noise hydraulic unit

Publications (2)

Publication Number Publication Date
EP1413772A1 EP1413772A1 (en) 2004-04-28
EP1413772B1 true EP1413772B1 (en) 2005-11-09

Family

ID=32049558

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03021586A Expired - Lifetime EP1413772B1 (en) 2002-10-22 2003-09-25 Low noise hydraulic power unit

Country Status (4)

Country Link
EP (1) EP1413772B1 (en)
AT (1) ATE309470T1 (en)
DE (2) DE10249337A1 (en)
ES (1) ES2251659T3 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104141605A (en) * 2013-05-08 2014-11-12 罗伯特·博世有限公司 A low-noise hydraulic device

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016009951A1 (en) * 2016-08-12 2018-02-15 Volker Kay Müller Hydraulic drive unit
AT519817A1 (en) * 2017-04-06 2018-10-15 Engel Austria Gmbh hydraulic system

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4337131A1 (en) * 1993-02-02 1994-09-08 Rexroth Mannesmann Gmbh Hydraulic unit
DE4406233A1 (en) * 1994-02-25 1995-08-31 Wilo Gmbh Device with an electric motor operated pump
DE4421375A1 (en) * 1994-06-18 1995-12-21 Rexroth Mannesmann Gmbh Hydraulic unit with electrically-operated pump

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104141605A (en) * 2013-05-08 2014-11-12 罗伯特·博世有限公司 A low-noise hydraulic device
CN104141605B (en) * 2013-05-08 2018-11-13 罗伯特·博世有限公司 The hydraulic test of low noise

Also Published As

Publication number Publication date
ES2251659T3 (en) 2006-05-01
DE50301604D1 (en) 2005-12-15
DE10249337A1 (en) 2004-05-06
ATE309470T1 (en) 2005-11-15
EP1413772A1 (en) 2004-04-28

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