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EP0857871B1 - Motor pump unit - Google Patents

Motor pump unit Download PDF

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Publication number
EP0857871B1
EP0857871B1 EP98890015A EP98890015A EP0857871B1 EP 0857871 B1 EP0857871 B1 EP 0857871B1 EP 98890015 A EP98890015 A EP 98890015A EP 98890015 A EP98890015 A EP 98890015A EP 0857871 B1 EP0857871 B1 EP 0857871B1
Authority
EP
European Patent Office
Prior art keywords
base part
hydraulic
combination unit
pump
motor housing
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
EP98890015A
Other languages
German (de)
French (fr)
Other versions
EP0857871A1 (en
Inventor
Gisela Schleich
Klaus Dipl.-Ing. Stolle
Gerhard Dipl.-Ing. Huber
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hoerbiger Hydraulik GmbH
Original Assignee
Hoerbiger Hydraulik GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hoerbiger Hydraulik GmbH filed Critical Hoerbiger Hydraulik GmbH
Publication of EP0857871A1 publication Critical patent/EP0857871A1/en
Application granted granted Critical
Publication of EP0857871B1 publication Critical patent/EP0857871B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B17/00Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/03Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B23/00Pumping installations or systems
    • F04B23/02Pumping installations or systems having reservoirs

Definitions

  • the invention relates to a hydraulic combination unit, with a Pump including connection lines and base part containing control elements, which is also arranged essentially coaxially to the pump drive axis Electric motor and one on the same side essentially hydraulic tank arranged coaxially and connected at the end to the base part wearing.
  • Such aggregates are known and are becoming more and more common mainly for portable applications or small applications Forces, for example in connection with the hydraulic actuation of Vehicle cover, the adjustment of medical treatment chairs or -tables, and the like, used.
  • the main thing is mostly an arrangement that is as small as possible and easy to accommodate, which - apart from of the working cylinders and feed lines to be operated - after Possibility includes all relevant components, so construction and maintenance are as simple as possible.
  • DE-C3 32 27 926 is a combination unit for hydraulic applications known in which the base part on one side the pump and the tank and on the other hand the sealed, encapsulated motor for the Pump carries, with a connection opening in the base part of the Motor housing remaining interior can be used as an oil tank. Is to however, a relatively expensive so-called sub-oil motor is required, whereby Furthermore, the attachment of the combination unit over the central, load-bearing Base part causes problems for some applications.
  • EP-A1 0 628 720 is a combination unit of the known type, in which to the base part with the pump in In the axial direction, first a tubular tank for the hydraulic medium and then coaxially the electric motor as a pump drive is arranged. The entry of the motor shaft into the tank is sealed, so that the engine itself is outside and not to be specially trained needs.
  • the disadvantage is the long tank required penetrating drive shaft for the pump and on the other hand the fact that the tank lying between the engine and the base part and carrying the engine relative must be stiff and therefore heavy.
  • a combination unit with a coaxially arranged tank and engine; with the engine in the tank protrudes; is known from EP-0 690 230.
  • the object of the present invention is a combination unit of the beginning to improve the type mentioned so that the disadvantages of known arrangements can be avoided and that in particular on simple Wise a compact design with a safe, yet easy arrangement of the drive motor for the pump can be created.
  • the The base part accommodates the pump together with the connecting line and control elements Bellhousing and one attached from the side of the electric motor, the electric motor, the motor housing and the hydraulic tank, has separate carrier flange. So that are the essential components of the base part divided according to their function - the load-bearing Elements for the engine and tank are combined in the carrier flange on which the Bellhousing with the hydraulic components related to the tank outer side is attached and fastened from the inside. So you can if necessary, the carrier flange and the bellhousing can also be made of different ones Materials exist - simple replacement, for example, would also be possible specially designed bellhousing for different pressures, Funding volume, or the like.
  • the motor housing is the Invention on the side of the base part on the outer circumference of an inside of pushed through the motor shaft tubular extension of the support flange and attached there sealed, preferably in a circumferential groove pressed.
  • the suction line to the pump runs according to another further embodiment of the invention in one from the side of the hydraulic tank in the Carrier flange inserted suction pipe and from there through the carrier flange in a feed line in the bellhousing.
  • This intake manifold can the respective Attachment conditions of the combination unit are designed accordingly or be arranged so that the function of the hydraulic pump in a simple manner can be ensured without making changes to the housing parts should be.
  • the Cover for the outer closure of the motor housing formed in one piece with this which is pot-shaped from the motor side over this pushed and then on the base part - for example as mentioned above - can be attached.
  • the jacket of the hydraulic tank on its the base part outer side facing away from the outer circumference of the motor housing is sealed and outside of this seal, preferably in one piece, the Cover of the motor housing bears. This also results in a very simple and dense design for the interior of the electric motor receiving Engine housing.
  • the invention on the side facing away from the base part electrical Components for the electric motor, preferably about an interference suppression element and / or a temperature protection element.
  • the jacket of the hydraulic tank on the side of the base part pushed over an outer sealing circumference and, preferably according to Art a hose clamp connection, is removably attached. So that's the Interior of the tank and also the engine case easily accessible.
  • the motor housing can be made of metal and the jacket of the hydraulic tank are made of plastic.
  • the first characteristic enables better heat dissipation from the engine to the tank as well as a good EMC shielding and the second a lighter and simple design, since the tank has nothing to carry but its own weight and also on the side opposite the base part just like described sealed against the tubular motor housing and thus can be supported.
  • FIG. 1 shows thereby a partial section through a combination unit according to the invention and 2 shows a reduced perspective view of the combination unit according to FIG. 1.
  • the hydraulic combination unit shown consists essentially of a pump 1 together with connecting lines not shown in more detail and control element receiving base part 2, essentially arranged coaxially to the pump drive axis 3, for driving the pump 1 serving electric motor 4 and one on the same side essentially hydraulic tank arranged coaxially and connected to the base part 2 at the end 5.
  • the electric motor 4 directly connected to the base part 2, so that all supporting and load-bearing forces or moments are introduced into the base part 2 and this e.g. also for fastening the whole, not shown here
  • Combination unit can be designed or used.
  • the base part 2 has one here the pump 1 including connecting lines and controls Bellhousing 9 and an attached to it from the side of the electric motor 4, the electric motor 4, the motor housing 7 and the hydraulic tank 5 bearing, separate support flange 10, making the base part 2 functional is divided and for example also from different materials can exist.
  • the motor housing 7 is on the side of the base part 2 over the Outer periphery 11 of a tubular through which the motor shaft 12 passes Approach 13 of the carrier flange 10 pushed and sealed there, preferably pressed into a circumferential groove.
  • the further circumferential groove shown 15 carries a sealing ring or the like, not shown here.
  • the suction line 16 to the pump 1 runs in one from the side of the Hydraulic tanks 5 forth in the support flange 10 inserted suction pipe 17 and then through the carrier flange 10 into a feed line 18 in the bellhousing 9, with which the unit can be easily adapted to the respective installation conditions can.
  • the cover 8 for the outer closure of the motor housing 7 is here on the outer end simply pressed into this, but apart from that could also be integrally formed with the motor housing 7 itself.
  • the coat 6 of the Hydraulic tanks 5 is on its outer side facing away from the base part 2 sealed against the outer circumference of the motor housing 7 by means of a seal 18, with which the cover 8 also contrary to the embodiment shown here outside of this seal connected to the jacket 6 of the hydraulic tank 5 could be - if necessary also in one piece - around the interior of the motor housing 7 complete.
  • the jacket 6 of the hydraulic tank 5 is on the side of the base part 2 via an outer sealing circumference 20 arranged here on the carrier flange 10 pushed and detachably fastened with a hose clamp 21.
  • the sealing takes place in a circumferential groove 22 on not shown Way inserted sealing ring or the like.
  • Other sealing rings are also provided in grooves 23 between the carrier flange 10 and the pump carrier 9.
  • the electrical feed, not shown, of the electric motor 4 can for example from the side of the cover 8 by either axial or Radial cable feed take place, with no special sealing here is necessary, since the interior of the motor housing 7 opposite the tank 5 is dry.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)

Description

Die Erfindung betrifft ein hydraulisches Kombiaggregat, mit einem eine Pumpe samt Verbindungsleitungen und Steuerelementen aufnehmenden Basisteil, der weiters einen im wesentlichen koaxial zur Pumpenantriebsachse angeordneten Elektromotor und einen auf der gleichen Seite im wesentlichen koaxial angeordneten, stirnseitig mit dem Basisteil verbundenen Hydrauliktank trägt.The invention relates to a hydraulic combination unit, with a Pump including connection lines and base part containing control elements, which is also arranged essentially coaxially to the pump drive axis Electric motor and one on the same side essentially hydraulic tank arranged coaxially and connected at the end to the base part wearing.

Derartige Aggregate sind bekannt und werden in eher steigendem Ausmaß hauptsächlich für transportable Anwendungen bzw. kleine aufzubringende Kräfte, beispielsweise im Zusammenhang mit der hydraulischen Betätigung von Fahrzeugverdecken, der Verstellung medizinischer Behandlungsstühle bzw. -tische, und dergleichen, eingesetzt. Hauptsächlich wesentlich ist dabei zumeist eine möglichst kleine, leicht unterzubringende Anordnung, die - abgesehen von den zu betätigenden Arbeitszylindern und Zuleitungen - nach Möglichkeit alle relevanten Komponenten umfaßt, damit Aufbau und Wartung möglichst einfach sind.Such aggregates are known and are becoming more and more common mainly for portable applications or small applications Forces, for example in connection with the hydraulic actuation of Vehicle cover, the adjustment of medical treatment chairs or -tables, and the like, used. The main thing is mostly an arrangement that is as small as possible and easy to accommodate, which - apart from of the working cylinders and feed lines to be operated - after Possibility includes all relevant components, so construction and maintenance are as simple as possible.

Aus der DE-C3 32 27 926 ist ein Kombiaggregat für hydraulische Anwendungen bekannt, bei dem der Basisteil auf der einen Seite die Pumpe und den Tank und auf der anderen Seite den abgedichtet gekapselten Motor für die Pumpe trägt, wobei über eine Verbindungsöffnung im Basisteil auch der im Motorgehäuse verbleibende Innenraum als Öltank genutzt werden kann. Dazu ist allerdings ein relativ teurer, sogenannter Unterölmotor erforderlich, wobei weiters die Befestigung des Kombiaggregates über den mittigen, tragenden Basisteil für manche Anwendungen Probleme macht.DE-C3 32 27 926 is a combination unit for hydraulic applications known in which the base part on one side the pump and the tank and on the other hand the sealed, encapsulated motor for the Pump carries, with a connection opening in the base part of the Motor housing remaining interior can be used as an oil tank. Is to however, a relatively expensive so-called sub-oil motor is required, whereby Furthermore, the attachment of the combination unit over the central, load-bearing Base part causes problems for some applications.

Weiters ist beispielsweise aus der EP-A1 0 628 720 ein Kombiaggregat der eingangs genannten Art bekannt, bei dem an den Basisteil mit der Pumpe in axialer Richtung anschließend zuerst ein rohrförmiger Tank für das Hydraulikmedium und daran anschließend koaxial der Elektromotor als Pumpenantrieb angeordnet ist. Der Eintritt der Motorwelle in den Tank ist abgedichtet, sodaß der Motor selbst außerhalb liegt und nicht speziell ausgebildet zu sein braucht. Nachteilig ist dabei einerseits die erforderliche lange, den Tank durchsetzende Antriebswelle für die Pumpe und andererseits der Umstand, daß der zwischen Motor und Basisteil liegende und den Motor tragende Tank relativ steif und damit schwer ausgebildet sein muß.Furthermore, EP-A1 0 628 720, for example, is a combination unit of the known type, in which to the base part with the pump in In the axial direction, first a tubular tank for the hydraulic medium and then coaxially the electric motor as a pump drive is arranged. The entry of the motor shaft into the tank is sealed, so that the engine itself is outside and not to be specially trained needs. On the one hand, the disadvantage is the long tank required penetrating drive shaft for the pump and on the other hand the fact that the tank lying between the engine and the base part and carrying the engine relative must be stiff and therefore heavy.

Ein Kombiaggregat mit koaxial angeordneten Tank und Motor; wobei der Motor in dem Tank hineinragt; ist aus der EP-0 690 230 bekannt.A combination unit with a coaxially arranged tank and engine; with the engine in the tank protrudes; is known from EP-0 690 230.

Aufgabe der vorliegenden Erfindung ist es, ein Kombiaggregat der eingangs genannten Art so zu verbessern, daß die beschriebenen Nachteile der bekannten Anordnungen vermieden werden und daß insbesonders auf einfache Weise eine kompakte Ausbildung mit sicherer und trotzdem leichter Anordnung des Antriebsmotors für die Pumpe geschaffen werden kann.The object of the present invention is a combination unit of the beginning to improve the type mentioned so that the disadvantages of known arrangements can be avoided and that in particular on simple Wise a compact design with a safe, yet easy arrangement of the drive motor for the pump can be created.

Diese Aufgabe wird gemäß der vorliegenden Erfindung bei einem hydraulischen Kombiaggregat der eingangs genannten Art dadurch gelöst, daß der Elektromotor ebenfalls unmittelbar mit dem Basisteil verbunden ist und daß ein den Elektromotor umgebendes, im wesentlichen rohrförmiges Motorgehäuse vorgesehen ist, welches abgedichtet mit dem Basisteil verbunden ist, eine Innenwand des Hydrauliktanks bildet und an der der Pumpe gegenüberliegenden Außenseite mit einem Deckel abgeschlossen ist. Damit ist eine Anordnung geschaffen, bei der die die Reaktionskräfte und das Gewicht des Motors aufnehmende Befestigung desselben unmittelbar am auch die Pumpe tragenden Basisteil erfolgt, womit eine sehr kompakte Konstruktion möglich ist. Der Tank umgibt im wesentlichen den über das Motorgehäuse trocken gehaltenen Motor über seine gesamte Länge, sodaß sich insgesamt eine sehr kompakte Konstruktion ergibt, die in den meisten Fällen wesentlich leichter den konstruktiven Gegebenheiten des jeweiligen Einsatzortes anpassbar ist. Es braucht nach wie vor kein extra aufwendiger Unterölmotor eingesetzt werden, was das Kombiaggregat auch für Anwendungen, bei denen der Preis eine vorrangige Rolle spielt, anwendbar macht. Als zusätzlicher Vorteil ergibt sich eine hervorragende Schallisolierung des vom rohrförmigen Motorgehäuse, vom Tankvolumen und vom Außenmantel des Tanks umgebenen Motors, sodaß auch Anwendungen möglich werden, bei denen bisher derartige Aggregate nur unter zusätzlicher Schallisolierung verwendet werden konnten.This object is achieved according to the present invention in a hydraulic Combination unit of the type mentioned solved in that the Electric motor is also directly connected to the base part and that an essentially tubular motor housing surrounding the electric motor is provided, which is sealed to the base part, a Forms inner wall of the hydraulic tank and on the opposite side of the pump Outside is finished with a lid. This is an arrangement created in which the the reaction forces and the weight of the engine receiving attachment of the same directly to the pump bearing Base part takes place, with which a very compact construction is possible. The The tank essentially surrounds the one that is kept dry over the motor housing Motor over its entire length, making it a very compact overall Construction results, which in most cases the much easier constructive conditions of the respective location is adaptable. It there is still no need to use an extra complex sub-oil motor, what the combination unit also for applications where the price is a priority Plays a role, makes it applicable. There is an additional advantage excellent sound insulation from the tubular motor housing, from Tank volume and engine surrounded by the outer jacket of the tank, so too Applications are possible in which such aggregates have previously only been used additional sound insulation could be used.

Nach einer weiteren Ausgestaltung der Erfindung ist vorgesehen, daß der Basisteil einen die Pumpe samt Verbindungsleitung und Steuerelementen aufnehmenden Pumpenträger und einen von der Seite des Elektromotors her befestigten, den Elektromotor, das Motorgehäuse und den Hydrauliktank tragenden, separaten Trägerflansch aufweist. Damit sind die wesentlichen Komponenten des Basisteils entsprechend ihrer Funktion aufgeteilt - die tragenden Elemente für Motor und Tank sind im Trägerflansch kombiniert, an dem der Pumpenträger mit den hydraulischen Komponenten von der bezogen auf den Tank äußeren Seite her aufgesetzt und von innen her befestigt ist. Somit können bedarfsweise der Trägerflansch und der Pumpenträger auch aus verschiedenen Materialien bestehen - möglich wäre auch der einfache Austausch beispielsweise speziell ausgebildeter Pumpenträger für unterschiedliche Drücke, Fördervolumen, oder dergleichen.According to a further embodiment of the invention it is provided that the The base part accommodates the pump together with the connecting line and control elements Bellhousing and one attached from the side of the electric motor, the electric motor, the motor housing and the hydraulic tank, has separate carrier flange. So that are the essential components of the base part divided according to their function - the load-bearing Elements for the engine and tank are combined in the carrier flange on which the Bellhousing with the hydraulic components related to the tank outer side is attached and fastened from the inside. So you can if necessary, the carrier flange and the bellhousing can also be made of different ones Materials exist - simple replacement, for example, would also be possible specially designed bellhousing for different pressures, Funding volume, or the like.

Das Motorgehäuse ist in besonders bevorzugter weiterer Ausgestaltung der Erfindung auf der Seite des Basisteils über den Außenumfang eines innen von der Motorwelle durchsetzten rohrförmigen Ansatzes des Trägerflansches geschoben und dort abgedichtet befestigt, vorzugsweise in eine Umfangsnut verpreßt. Dies ergibt eine einfache konstruktive Ausbildung, die wiederum bedarfsweise auch unterschiedliche Materialien für den Trägerflansch und das rohrförmige Motorgehäuse erlaubt.In a particularly preferred further embodiment, the motor housing is the Invention on the side of the base part on the outer circumference of an inside of pushed through the motor shaft tubular extension of the support flange and attached there sealed, preferably in a circumferential groove pressed. This results in a simple constructive training, which in turn if necessary, different materials for the support flange and that tubular motor housing allowed.

Die Ansaugleitung zur Pumpe verläuft nach einer anderen weiteren Ausgestaltung der Erfindung in einem von der Seite des Hydrauliktanks her in den Trägerflansch eingesteckten Saugrohr und von dort durch den Trägerflansch in eine Zuführleitung im Pumpenträger. Dieses Saugrohr kann den jeweiligen Anbringungsbedingungen des Kombiaggregates entsprechend ausgebildet bzw. angeordnet werden, sodaß auf einfache Weise die Funktion der Hydraulikpumpe sichergestellt werden kann, ohne daß an den Gehäuseteilen Änderungen vorgenommen werden müßten. The suction line to the pump runs according to another further embodiment of the invention in one from the side of the hydraulic tank in the Carrier flange inserted suction pipe and from there through the carrier flange in a feed line in the bellhousing. This intake manifold can the respective Attachment conditions of the combination unit are designed accordingly or be arranged so that the function of the hydraulic pump in a simple manner can be ensured without making changes to the housing parts should be.

Nach einer anderen Ausgestaltung der Erfindung ist vorgesehen, daß der Deckel zum äußeren Abschluß des Motorgehäuses mit diesem einstückig ausgebildet ist, welches damit topfförmig von der Motorseite her über diesen geschoben und dann am Basisteil - beispielsweise wie oben angesprochen - befestigt werden kann.According to another embodiment of the invention it is provided that the Cover for the outer closure of the motor housing formed in one piece with this which is pot-shaped from the motor side over this pushed and then on the base part - for example as mentioned above - can be attached.

Nach einer anderen bevorzugten Ausgestaltung der Erfindung kann aber auch vorgesehen sein, daß der Mantel des Hydrauliktanks an seiner dem Basisteil abgewandten äußeren Seite gegen den Außenumfang des Motorgehäuses abgedichtet ist und außerhalb dieser Abdichtung, vorzugsweise einstückig, den Deckel des Motorgehäuses trägt. Auch damit ergibt sich eine sehr einfache und dichte Ausgestaltung für den den Elektromotor aufnehmenden Innenraum des Motorgehäuses.According to another preferred embodiment of the invention, however also be provided that the jacket of the hydraulic tank on its the base part outer side facing away from the outer circumference of the motor housing is sealed and outside of this seal, preferably in one piece, the Cover of the motor housing bears. This also results in a very simple and dense design for the interior of the electric motor receiving Engine housing.

Im Motorgehäuse selbst können nach einer besonders bevorzugten Ausgestaltung der Erfindung auf der dem Basisteil abgewandten Seite elektrische Komponenten für den Elektromotor, vorzugsweise etwa ein Entstörelement und/oder ein Temperaturschutzelement, angeordnet sein. Diese Elemente können damit vorteilhafterweise unmittelbar am oder in der Nähe des Elektromotors angeordnet sein, ohne sonstige Behinderungen der Konstruktion.In the motor housing itself, according to a particularly preferred embodiment the invention on the side facing away from the base part electrical Components for the electric motor, preferably about an interference suppression element and / or a temperature protection element. These items can thus advantageously directly on or near the electric motor be arranged without other obstacles to the construction.

Nach einer weiteren vorteilhaften Ausgestaltung der Erfindung kann vorgesehen sein, daß der Mantel des Hydrauliktanks auf der Seite des Basisteils über einen äußeren Dichtumfang geschoben und, vorzugsweise nach Art einer Schlauchschellenverbindung, abnehmbar befestigt ist. Damit ist der Innenraum des Tanks und auch das Motorgehäuse leicht zugänglich.According to a further advantageous embodiment of the invention be provided that the jacket of the hydraulic tank on the side of the base part pushed over an outer sealing circumference and, preferably according to Art a hose clamp connection, is removably attached. So that's the Interior of the tank and also the engine case easily accessible.

Das Motorgehäuse kann in weiterer Ausgestaltung der Erfindung aus Metall und der Mantel des Hydrauliktanks aus Kunststoff bestehen. Das erste Merkmal ermöglicht eine bessere Wärmeableitung vom Motor in den Tank sowie auch eine gute EMV-Abschirmung und das zweite eine leichtere und einfache Ausgestaltung, da ja der Tank nichts außer seinem eigenen Gewicht zu tragen hat und außerdem noch an der dem Basisteil gegenüberliegenden Seite einfach wie beschrieben gegenüber dem rohrförmigen Motorgehäuse abgedichtet und damit abgestützt sein kann.In a further embodiment of the invention, the motor housing can be made of metal and the jacket of the hydraulic tank are made of plastic. The first characteristic enables better heat dissipation from the engine to the tank as well as a good EMC shielding and the second a lighter and simple design, since the tank has nothing to carry but its own weight and also on the side opposite the base part just like described sealed against the tubular motor housing and thus can be supported.

Die Erfindung wird im folgenden noch anhand des in der Zeichnung schematisch dargestellten Ausführungsbeispiels näher erläutert. Fig. 1 zeigt dabei einen teilweisen Schnitt durch ein erfindungsgemäßes Kombiaggregat und Fig. 2 eine verkleinerte perspektivische Ansicht des Kombiaggregats nach Fig. 1.The invention is illustrated schematically below with reference to the drawing illustrated embodiment explained in more detail. Fig. 1 shows thereby a partial section through a combination unit according to the invention and 2 shows a reduced perspective view of the combination unit according to FIG. 1.

Das dargestellte hydraulische Kombiaggregat besteht im wesentlichen aus einem eine Pumpe 1 samt nicht detaillierter dargestellten Verbindungsleitungen und Steuerelementen aufnehmenden Basisteil 2, einem im wesentlichen koaxial zur Pumpenantriebsachse 3 angeordneten, zum Antrieb der Pumpe 1 dienenden Elektromotor 4 und einem auf der gleichen Seite im wesentlichen koaxial angeordneten, stirnseitig mit dem Basisteil 2 verbundenen Hydrauliktank 5. Ebenso wie der Mantel 6 des Hydrauliktanks 5 ist auch der Elektromotor 4 unmittelbar mit dem Basisteil 2 verbunden, sodaß alle abstützenden und tragenden Kräfte bzw. Momente in den Basisteil 2 eingeleitet sind und dieser damit z.B. auch zur hier nicht dargestellten Befestigung des gesamten Kombiaggregats ausgebildet bzw. verwendet werden kann.The hydraulic combination unit shown consists essentially of a pump 1 together with connecting lines not shown in more detail and control element receiving base part 2, essentially arranged coaxially to the pump drive axis 3, for driving the pump 1 serving electric motor 4 and one on the same side essentially hydraulic tank arranged coaxially and connected to the base part 2 at the end 5. Just like the jacket 6 of the hydraulic tank 5 is also the electric motor 4 directly connected to the base part 2, so that all supporting and load-bearing forces or moments are introduced into the base part 2 and this e.g. also for fastening the whole, not shown here Combination unit can be designed or used.

Ebenfalls mit dem Basisteil 2 verbunden ist ein den Elektromotor 4 umgebendes, im wesentlichen rohrförmiges Motorgehäuse 7, welches eine Innenwand des Hydrauliktanks 5 bildet und an der der Pumpe 1 gegenüberliegenden Außenseite mit einem Deckel 8 abgeschlossen ist. Der Basisteil 2 weist hier einen die Pumpe 1 samt Verbindungsleitungen und Steuerelementen aufnehmenden Pumpenträger 9 und einen daran von der Seite des Elektromotors 4 her befestigten, den Elektromotor 4, das Motorgehäuse 7 und den Hydrauliktank 5 tragenden, separaten Trägerflansch 10 auf, womit der Basisteil 2 funktionell aufgeteilt ist und beispielsweise auch aus unterschiedlichen Werkstoffen bestehen kann. Das Motorgehäuse 7 ist auf der Seite des Basisteils 2 über den Außenumfang 11 eines innen von der Motorwelle 12 durchsetzten rohrförmigen Ansatzes 13 des Trägerflansches 10 geschoben und dort abgedichtet befestigt, vorzugsweise in einen Umfangsnut verpreßt. Die weitere dargestellte Umfangsnut 15 trägt einen hier nicht dargestellten Dichtring oder dergleichen.Also connected to the base part 2 is a surrounding the electric motor 4, essentially tubular motor housing 7, which has an inner wall of the hydraulic tank 5 forms and on the outside of the pump 1 is completed with a lid 8. The base part 2 has one here the pump 1 including connecting lines and controls Bellhousing 9 and an attached to it from the side of the electric motor 4, the electric motor 4, the motor housing 7 and the hydraulic tank 5 bearing, separate support flange 10, making the base part 2 functional is divided and for example also from different materials can exist. The motor housing 7 is on the side of the base part 2 over the Outer periphery 11 of a tubular through which the motor shaft 12 passes Approach 13 of the carrier flange 10 pushed and sealed there, preferably pressed into a circumferential groove. The further circumferential groove shown 15 carries a sealing ring or the like, not shown here.

Die Ansaugleitung 16 zur Pumpe 1 verläuft in einem von der Seite des Hydrauliktanks 5 her in den Trägerflansch 10 eingesteckten Saugrohr 17 und sodann durch den Trägerflansch 10 in eine Zuführleitung 18 im Pumpenträger 9, womit das Aggregat leicht den jeweiligen Einbaubedingungen angepaßt werden kann.The suction line 16 to the pump 1 runs in one from the side of the Hydraulic tanks 5 forth in the support flange 10 inserted suction pipe 17 and then through the carrier flange 10 into a feed line 18 in the bellhousing 9, with which the unit can be easily adapted to the respective installation conditions can.

Der Deckel 8 zum äußeren Abschluß des Motorgehäuses 7 ist hier am äußeren Ende einfach in dieses eingedrückt, könnte davon abgesehen aber auch einstückig mit dem Motorgehäuse 7 selbst ausgebildet sein. Der Mantel 6 des Hydrauliktanks 5 ist an seiner dem Basisteil 2 abgewendeten äußeren Seite mittels einer Dichtung 18 gegen den Außenumfang des Motorgehäuses 7 abgedichtet, womit der Deckel 8 entgegen der hier dargestellten Ausführung auch außerhalb dieser Abdichtung mit dem Mantel 6 des Hydrauliktanks 5 verbunden sein könnte - bedarfsweise auch einstückig - um den Innenraum des Motorgehäuses 7 abzuschließen.The cover 8 for the outer closure of the motor housing 7 is here on the outer end simply pressed into this, but apart from that could also be integrally formed with the motor housing 7 itself. The coat 6 of the Hydraulic tanks 5 is on its outer side facing away from the base part 2 sealed against the outer circumference of the motor housing 7 by means of a seal 18, with which the cover 8 also contrary to the embodiment shown here outside of this seal connected to the jacket 6 of the hydraulic tank 5 could be - if necessary also in one piece - around the interior of the motor housing 7 complete.

Im Motorgehäuse 7 sind auf der dem Basisteil 2 abgewandten Seite außerhalb des Elektromotors 4 elektrische Komponenten 19 für diesen, beispielsweise ein Entstörelement oder ein Temperaturschutzelement etwa in Form eines Temperaturschutzschalters bzw. Heißleiters, angeordnet, was im Hinblick auf die erforderliche räumliche Nähe derartiger Komponenten zum Elektromotor hier sehr vorteilhaft möglich ist.In the motor housing 7 are on the side facing away from the base part 2 outside of the electric motor 4 electrical components 19 for this, for example an interference suppression element or a temperature protection element in the form of a Temperature protection switch or thermistor, arranged what with regard the required spatial proximity of such components to the electric motor here is very advantageously possible.

Der Mantel 6 des Hydrauliktanks 5 ist auf der Seite des Basisteils 2 über einen hier am Trägerflansch 10 angeordneten äußeren Dichtumfang 20 geschoben und mit einer Schlauchschelle 21 abnehmbar befestigt. Auch hier erfolgt die Abdichtung über einen in eine Umfangsnut 22 auf nicht dargestellte Weise eingelegten Dichtring oder dergleichen. Weitere Dichtringe sind auch in Nuten 23 zwischen dem Trägerflansch 10 und dem Pumpenträger 9 vorgesehen. The jacket 6 of the hydraulic tank 5 is on the side of the base part 2 via an outer sealing circumference 20 arranged here on the carrier flange 10 pushed and detachably fastened with a hose clamp 21. Here too the sealing takes place in a circumferential groove 22 on not shown Way inserted sealing ring or the like. Other sealing rings are also provided in grooves 23 between the carrier flange 10 and the pump carrier 9.

Der am Ansatz 13 des Trägerflansches 10 auf hier nicht dargestellte Weise befestigte Elektromotor 4 treibt über die Motorwelle 12 und eine Kupplung 24 die Pumpe 1 an, die hier als Radialkolbenpumpe ausgebildet ist. Aufbau und Funktion derartiger Pumpen sind dem Fachmann bekannt, im vorliegenden Zusammenhang nicht weiter wesentlich, und sollen daher hier auch nicht näher erläutert werden. Die verschiedenen hydraulischen Anschlüsse am Pumpenträger 9 sind insbesonders aus Fig. 2 ersichtlich, hier aber nicht weiter interessant. Es ist bei Betrachtung insbesonders von Fig. 1 leicht ersichtlich, daß der Mantel 6 des Hydrauliktanks 5 außer dem im Hydrauliktank 5 im Betrieb enthaltenen Hydraulikmedium nichts zu tragen hat und demnach relativ dünn und leicht und beispielsweise auch aus Kunststoff sein kann. Gleiches gilt an sich auch für das Motorgehäuse 7 - dieses kann aber im Hinblick auf verbesserte Wärmeableitung vom Elektromotor 4 in den Hydrauliktank 5 bzw. wegen der erforderlichen Abschirmung auch bevorzugt aus Metall bestehen, beispielsweise einem einfachen Aluminiumrohr.The at the approach 13 of the carrier flange 10 on not shown here Fastened electric motor 4 drives over the motor shaft 12 and one Coupling 24 to the pump 1, which is designed here as a radial piston pump. The construction and function of such pumps are known to those skilled in the art Context not essential, and should therefore also here not explained in more detail. The various hydraulic connections on Bellhousings 9 are particularly evident from FIG. 2, but not here further interesting. It is easy when viewed in particular from FIG. 1 can be seen that the jacket 6 of the hydraulic tank 5 except that in the hydraulic tank 5 hydraulic medium contained in the operation has nothing to carry and therefore relatively thin and light and can also be made of plastic, for example. The same applies per se to the motor housing 7 - but this can be done in With regard to improved heat dissipation from the electric motor 4 in the hydraulic tank 5 or because of the required shielding also preferably made of metal exist, for example a simple aluminum tube.

Die nicht dargestellte elektrische Anspeisung des Elektromotors 4 kann beispielsweise von der Seite des Deckels 8 aus durch entweder axiale oder radiale Kabelzuführung erfolgen, wobei hier keine besondere Abdichtung erforderlich ist, da ja der Innenraum des Motorgehäuses 7 gegenüber dem Tank 5 trocken ist.The electrical feed, not shown, of the electric motor 4 can for example from the side of the cover 8 by either axial or Radial cable feed take place, with no special sealing here is necessary, since the interior of the motor housing 7 opposite the tank 5 is dry.

Nur der Vollständigkeit halber ist noch auf eine Dichtung 25 am Durchtritt der Motorwelle 12 zu verweisen, welche sicherstellt, daß auch an dieser Stelle kein Hydraulikmedium ins Motorgehäuse 7 eindringen kann.Only for the sake of completeness there is still a seal 25 at the passage to refer to the motor shaft 12, which ensures that also on this Place no hydraulic medium can penetrate into the motor housing 7.

Claims (9)

  1. An hydraulic combination unit having a base part (2) which receives a pump (1) together with connecting lines and control members and which additionally supports an electric motor (4) arranged substantially coaxially with the drive axis (3) of the pump and an hydraulic tank (5) arranged substantially coaxially on the same side and connected at the front end to the base part (2), characterized in that the electric motor (4) is likewise connected directly to the base part (2), and a substantially tubular motor housing (7) is provided which surrounds the electric motor (4) and which is connected in a sealed-off manner to the base part (2), forms an inner wall of the hydraulic tank (5) and is closed off by a cover (8) on the outer side opposite the pump (1).
  2. An hydraulic combination unit according to Claim 1, characterized in that the base part (2) comprises a pump support (9), receiving the pump (1) together with the connecting lines and control members, and a separate support flange (10), fastened from the side of the electric motor (4) and supporting the electric motor (4), the motor housing (7) and the hydraulic tank (5).
  3. An hydraulic combination unit according to Claim 2, characterized in that the motor housing (7) on the side of the base part (2) is pushed over the external periphery of a tubular attachment (13) of the support flange (10) traversed on the inside by the motor shaft (12) and is supported there in a sealed-off manner, preferably pressed into a peripheral groove (14).
  4. An hydraulic combination unit according to Claim 2 or 3, characterized in that the suction line (16) to the pump (1) extends in a suction pipe (17) inserted into the support flange (10) from the side of the hydraulic tank (5) and extends through the support flange (10) into a supply line (18) in the pump support (9).
  5. An hydraulic combination unit according to one or more of Claims 1 to 4, characterized in that the cover (8) for closing off the motor housing (7) on the outside is constructed in one piece with the latter.
  6. An hydraulic combination unit according to one or more of Claims 1 to 4, characterized in that the jacket (6) of the hydraulic tank (5) is sealed off from the external periphery of the motor housing (7) on its side remote from the base part (2) and supports the cover (8) of the motor housing (7) outside this seal (18), preferably in an integral manner.
  7. An hydraulic combination unit according to one or more of Claims 1 to 6, characterized in that electrical components (19) for the electric motor (4), preferably an anti-interference member and/or a temperature-protection member, are arranged in the motor housing (7) on the side remote from the base part (2).
  8. An hydraulic combination unit according to one or more of Claims 1 to 7, characterized in that the jacket (6) of the hydraulic tank (5) on the side of the base part (2) is pushed over an external sealing periphery (20) and is fastened in a removable manner, preferably in the manner of a hose-clamp connexion.
  9. An hydraulic combination unit according to one or more of Claims 1 to 8, characterized in that the motor housing (7) consists of metal and the jacket (6) of the hydraulic tank (5) consists of plastics material.
EP98890015A 1997-02-05 1998-01-19 Motor pump unit Expired - Lifetime EP0857871B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AT179/97 1997-02-05
AT17997 1997-02-05
AT17997 1997-02-05

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EP0857871A1 EP0857871A1 (en) 1998-08-12
EP0857871B1 true EP0857871B1 (en) 2001-11-07

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ID=3483621

Family Applications (1)

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EP98890015A Expired - Lifetime EP0857871B1 (en) 1997-02-05 1998-01-19 Motor pump unit

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US (1) US6168393B1 (en)
EP (1) EP0857871B1 (en)
DE (1) DE59802006D1 (en)
SK (1) SK13398A3 (en)

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Also Published As

Publication number Publication date
EP0857871A1 (en) 1998-08-12
SK13398A3 (en) 1998-10-07
DE59802006D1 (en) 2001-12-13
US6168393B1 (en) 2001-01-02

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