EP0890741B1 - Unité hydraulique compacte - Google Patents

Unité hydraulique compacte Download PDF

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Publication number
EP0890741B1
EP0890741B1 EP98112313A EP98112313A EP0890741B1 EP 0890741 B1 EP0890741 B1 EP 0890741B1 EP 98112313 A EP98112313 A EP 98112313A EP 98112313 A EP98112313 A EP 98112313A EP 0890741 B1 EP0890741 B1 EP 0890741B1
Authority
EP
European Patent Office
Prior art keywords
hydraulic
housing
pump
shaft
hydraulic 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
EP98112313A
Other languages
German (de)
English (en)
Other versions
EP0890741A3 (fr
EP0890741A2 (fr
Inventor
Ralf Dr. Lemmen
Karl-Heinz Jakubowski
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.)
Brueninghaus Hydromatik GmbH
Original Assignee
Brueninghaus Hydromatik 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 Brueninghaus Hydromatik GmbH filed Critical Brueninghaus Hydromatik GmbH
Publication of EP0890741A2 publication Critical patent/EP0890741A2/fr
Publication of EP0890741A3 publication Critical patent/EP0890741A3/fr
Application granted granted Critical
Publication of EP0890741B1 publication Critical patent/EP0890741B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F04B23/08—Combinations of two or more pumps the pumps being of different types
    • F04B23/10—Combinations of two or more pumps the pumps being of different types at least one pump being of the reciprocating positive-displacement type
    • F04B23/106—Combinations of two or more pumps the pumps being of different types at least one pump being of the reciprocating positive-displacement type being an axial piston pump
    • 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
    • F04B23/08—Combinations of two or more pumps the pumps being of different types
    • F04B23/12—Combinations of two or more pumps the pumps being of different types at least one pump being of the rotary-piston positive-displacement type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/12—Combinations of two or more pumps

Definitions

  • the invention relates to a compact hydraulic unit, in particular a compact one Hydraulic unit by an internal combustion engine of a motor vehicle or commercial vehicle is driven.
  • the hydraulic unit according to the invention is used in particular for driving a main hydraulic pump for the hydraulic supply of hydraulic components, z. B. Factory and lifting devices of vehicles of agricultural machinery, and to drive an auxiliary hydraulic pump, e.g. B. for hydraulic supply of hydraulic control components.
  • From DE 33 24 583 A1 is a double pump unit with two coaxial mutually arranged hydraulic pumps known, with a secondary shaft and a torque transmission element further pumps can be driven and Hydraulic medium via suction lines in a housing wall Intermediate housing is fed to the two pumps.
  • FR-A-2 096 191 is a double pump unit with a common auxiliary pump known, the auxiliary pump with a valve block Filters is connected.
  • the invention is therefore based on the object of a compact hydraulic unit create, which takes up little space and with relatively little Effort can be manufactured and assembled.
  • the invention is based on the knowledge that the space required Hydraulic unit reduced and at the same time the ease of installation can be improved can if the hydraulic lines and the filter or filters in the housing wall are integrated.
  • a particularly compact design is also achieved in that the Main hydraulic pump and the secondary hydraulic pump on two opposite one another Front sides of the hydraulic unit can be mounted and with one in the hydraulic unit mounted shaft are connected to each other, with a side drive or a The shaft is driven by means of a side drive wheel arranged on the shaft.
  • the charge pump can be in accordance with claim 4 advantageously as a gear, blade or arranged on the shaft Turbine pump to be designed.
  • the gear, blade or turbine pump only has a relatively small footprint, so that overall a particularly compact design is achieved.
  • the charge pump provides pre-compression for the main hydraulic pump causes.
  • an axially to the Charge pump adjacent mounting disc can be provided, the same time the storage the shaft on one of the end faces of the housing and the inclusion of one by the Mounting washer leading section of the suction line is used.
  • the charge pump accessible after dismantling the mounting disc and can be mounted in the axial direction or demountable.
  • the side drive wheel is preferably mounted in the housing according to claim 6, that radial forces exerted on the side drive wheel are not transmitted to the shaft.
  • the side drive wheel can be cup-shaped and enclose the drive wheel bearing radially and axially at least on one side. In the radial direction acting forces are on the preferably between the ring gear of the Side drive wheels and the drive wheel bearings located on the shaft are cushioned.
  • the drive wheel bearing at the same time the bearing of the shaft on one of the serve both ends of the housing.
  • the housing wall encloses the shaft, the side drive wheel and the charge pump may be relatively narrow. This creates a relatively thick-walled one Housing wall that offers space for the filters and hydraulic lines.
  • an agricultural vehicle can be flanged.
  • the side drive wheel which is designed as a gearwheel, can have a comb the corresponding gear of the internal combustion engine or the drive gear, if the hydraulic unit on the internal combustion engine or the drive gear is flanged.
  • FIG Fig. 1 An embodiment of a compact hydraulic unit 1 according to the invention is shown in FIG Fig. 1 shown partially in section.
  • the housing 2 of the hydraulic unit 1 is one shaft 3 extending axially through the hydraulic unit 1 is rotatably supported.
  • the wave 3 connects a main hydraulic pump 4 designed as a variable displacement pump with only one schematically shown auxiliary hydraulic pump 5.
  • the main hydraulic pump 4 serves z. B for the hydraulic drive of tools or lifting devices such as buckets, Plowing etc. on agricultural vehicles, for example.
  • the auxiliary hydraulic pump 5 serves to supply control components of the Hydraulic system.
  • the main hydraulic pump 4 is preferably with a Adjustment device 6 is adjustable in its delivery volume.
  • the housing wall 7 of the housing 2 is relatively thick-walled and surrounds it even closer components of the hydraulic unit to be described at a relatively short distance.
  • the hydraulic lines are in one in the housing wall 7 integrated design. Furthermore, the housing wall 7 can be closer Integrate descriptive filters.
  • the main hydraulic pump 4 is the compact one on a first end face 8 Hydraulic unit flange flange 9 with the compact hydraulic unit 1 connected.
  • the auxiliary hydraulic pump 5 on the other hand, is connected to a second one, the first one End face 8 axially opposite second end face 10 arranged flange 11 with the compact hydraulic unit 1 z.
  • the flange 9 can with the first end face 8 of the compact hydraulic unit 1 can also be screwed.
  • screw connections are not shown in Fig. 1.
  • Appropriately are on the interface between the compact hydraulic unit 1 and the flanges 9 and 11 appropriate sealing devices, e.g. B. sealing lips or O-rings provided to a effect for the hydraulic medium sealing closure.
  • hydraulic medium e.g. B. a hydraulic oil
  • the filter 15 is also integrated into the housing wall 7 and can, for. B. cartridge-shaped be and in a cylindrical recess of the housing wall 7 in one direction be insertable perpendicular to the drawing plane. This is a particularly simple one Maintenance and cleaning of the filter 15 possible. After flowing through the filter 15 flows the hydraulic medium to a branch 16 in the low pressure line 14. Zur better illustration is the flow of the hydraulic medium in the Hydraulic unit 1 according to the invention characterized by corresponding arrows.
  • the pressure line 19 carries the current of the Hydraulic medium through a second filter 21, which is also in the housing wall 7th the compact hydraulic unit 1 is integrated.
  • the second filter 21 can be like the first Filter 15 can be inserted in the form of a cartridge into the housing wall 7 of the hydraulic unit 1 or be usable.
  • the pressure line 19 then leads to one in the flange 9 provided suction channel of the main hydraulic pump 4.
  • the charge pump 20 is preferably a gear pump, vane pump or turbine pump trained and serves the pre-compression of the hydraulic medium.
  • the pressure in the pressure line 19 can preferably by means of a pressure relief valve, not shown in FIG predetermined pressure, e.g. 6 bar, can be adjustable.
  • the gear, the impeller or the Turbine of the charge pump 20 can also be formed in one piece with the shaft 3.
  • the charge pump 20 may together with the shaft 3 axially into a corresponding recess in the housing wall 7 the hydraulic unit 1 are removed or installed.
  • the axial fixation of the Charge pump 20 is carried out by means of the axially adjacent mounting disc 17.
  • Die Mounting disc 17 is used in the preferred embodiment shown in FIG. 1 at the same time the bearing of the shaft 3 on the end face 10 of the hydraulic unit 1 a corresponding bearing 22 between the mounting disc 17 and the shaft 3 intended. Furthermore, the mounting disc 17 is used to supply the hydraulic medium to the Auxiliary hydraulic pump 5.
  • a bore 24a can be provided in a cavity 23 surrounding the shaft.
  • the bore between the line 55 and the surrounding the shaft 3 Cavity 23 may be formed.
  • a drive wheel 24 to be described below is used to drive the shaft 3.
  • the shaft 3 can also be in other way, e.g. B. axially by a through the main hydraulic pump 4 or the auxiliary hydraulic pump 5 protruding extension of the shaft 3 are driven and that Drive wheel 24 then works as an output gear for driving further mechanical Components.
  • this is Drive wheel 24 is cup-shaped and encloses a drive wheel bearing 25 radially and one-sided axial.
  • the drive wheel bearing 25 is cup-shaped within the trained drive wheel 24 arranged.
  • the drive wheel 24 preferably has one Sprocket 26, which radially surrounds the drive wheel bearing 25.
  • the drive wheel bearing 25 is arranged on a pin 30 of the housing wall 7 and is of an annular Recess 27 surround the front 8 of the compact hydraulic unit 1 is open.
  • the drive wheel 24 designed as a gear can, for. B. by means of a key and groove connection 28 connected to the shaft 3. However, it is also conceivable to use the drive wheel 24 in one piece with the shaft 3.
  • the compact hydraulic unit 1 according to the invention is installed, for. B. in the Way that the shaft 3, the charge pump 20 and the mounting disc 17 with the bearing 22nd be pre-assembled.
  • the above-mentioned unit can then be removed with the flange 11 are inserted axially into the cavity 23 of the hydraulic unit 1.
  • the side drive wheel 25 is inserted from the end face 8 into the annular space 27 put on the shaft 3. Possibly. are still the z.
  • the necessary assembly steps are therefore on limited to a minimum. In particular, there are no hose lines or pipes assemble.
  • Fig. 2 shows the embodiment already described with reference to Fig. 1 in its final assembled condition in a supervision. Elements already described are included matching reference numerals, so that there is a repetitive Description unnecessary.
  • the housing 2 has a lateral opening 40, in the region of the side drive wheel 24 which the side drive wheel 24 is accessible.
  • the lateral opening 40 of the housing 2 is surrounded by a connecting flange 41, the mounting holes 42 to 47 z. B. can be connected to a gear box of a drive gear.
  • the drive gear can e.g. B. with the internal combustion engine, for example agricultural Commercial vehicle are connected. It can be designed as a gear Comb side drive wheel 24 with a corresponding tooth edge of the drive gear, so that the main hydraulic motor 4 and the auxiliary hydraulic motor 5 via the shaft 3 are driven.
  • a tank line is connected via the connecting flange 41 connected to the suction opening 13 of the hydraulic unit 1.
  • FIG. 2 further hydraulic control components, e.g. B. the control valves of a load-sensing unit 48 are mounted on the flange 9.
  • the individual valves of the load-sensing unit can be connected via connecting lines 49 which are in the flange 9 are integrated, connected to each other.
  • a signal pressure line 50 is used to control the adjusting device 6 of the main hydraulic pump designed as a variable pump 4.
  • a priority valve 51 can be mounted on the auxiliary hydraulic pump 5.
  • the suction opening 13 leading to the pressure medium tank which via the Suction line 14 connected to the suction opening 13 and the first filter 15 in the Suction line 14 arranged branch 16, on the one hand to the auxiliary hydraulic pump 5th and on the other hand leads to the charge pump 20.
  • the priority valve 51 can be arranged and a plurality of hydraulic outputs 52, 53 lead to different hydraulic consumers.
  • the charge pump 20 feeds that Pressure medium in the pressure line 19.
  • the second is in the pressure line 19 Filter 21.
  • the pressure in the pressure line 19 can by means of a pressure relief valve 60 can be adjusted to a predetermined maximum pressure.
  • the pressure line 19 leads to the main hydraulic pump 4, which pumps the hydraulic medium into the working line 61 feeds.
  • the displacement of the main hydraulic pump designed as a variable displacement pump 4 is adjustable via the adjustment device 6, the in the Control line 50 prevailing signal pressure by a not described here and as such known load sensing unit 48 is controlled.
  • the main hydraulic pump 4, the secondary hydraulic pump 5 and the Charge pump 20 connected to one another via a shaft 3, which is connected via the side drive wheel 24 is drivable.
  • the invention is not limited to the illustrated embodiment.
  • the Compact hydraulic unit 1 according to the invention can also be others Components, e.g. B. the pressure relief valve can be integrated.
  • the invention Hydraulic unit 1 allows an extremely space-saving and easy-to-assemble design.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Reciprocating Pumps (AREA)

Claims (12)

  1. Unité hydraulique (1) compacte, en particulier entraínée par un moteur à combustion interne d'un véhicule automobile ou d'un véhicule utilitaire, comportant un boítier (2) dans lequel un arbre (3) est monté rotatif, lequel relie une pompe hydraulique principale (4) qui peut être bridée sur une face frontale (8) du boítier (2), une pompe hydraulique auxiliaire (5) qui peut être bridée sur une deuxième face frontale (10) du boítier (2) et qui est reliée solidaire en rotation avec un pignon menant latéral (24), qui est monté sur le boítier (2) au moyen d'un palier (25) de pignon menant et qui est accessible via une ouverture latérale (40) du boítier (2), pour l'entraínement et/ou le dégagement, et, dans une paroi (7) du boítier est intégrée au moins une conduite d'aspiration (14) qui amène un fluide hydraulique à la pompe hydraulique principale (4) et à la pompe hydraulique auxiliaire (5),
    caractérisée en ce que,
    dans la paroi (7) du boítier, est en outre intégré au moins un premier filtre (15) agencé dans la conduite d'aspiration (14) pour filtrer le fluide hydraulique.
  2. Unité hydraulique compacte selon la revendication 1, caractérisée en ce qu'il est prévu une pompe de suralimentation (20) reliée solidaire en rotation avec l'arbre (3) et agencée à l'intérieur du boítier (2), laquelle amène via un deuxième filtre (21) intégré dans la paroi (7) du boítier, le fluide hydraulique à la pompe hydraulique principale (4) via une conduite sous pression (19) intégrée dans la paroi (7) du boítier.
  3. Unité hydraulique compacte selon la revendication 2, caractérisée en ce que la pompe de suralimentation (20) aspire via le premier filtre (19) intégré dans la paroi (7) de boítier le fluide hydraulique hors d'un réservoir (T) de fluide hydraulique.
  4. Unité hydraulique selon l'une ou l'autre des revendications 2 et 3, caractérisée en ce que la pompe de suralimentation (20) est réalisée sous forme de pompe à roue dentée, de pompe à aubes ou de pompe à turbine agencée sur l'arbre (3).
  5. Unité hydraulique compacte selon l'une des revendications 2 à 4, caractérisée en ce que la pompe de suralimentation (20) est axialement adjacente à un disque de montage qui sert simultanément au montage de l'arbre (3) sur la deuxième face frontale (10) du boítier (2) et à la réception d'un tronçon de la conduite d'aspiration (14) pour conduire le fluide hydraulique à la pompe auxiliaire (5) et, après son démontage, la pompe de suralimentation (20) peut être introduite axialement dans le boítier (2).
  6. Unité hydraulique compacte selon l'une des revendications 1 à 5, caractérisée en ce que le pignon menant latéral (24) est monté dans le palier (25) de pignon menant de telle sorte que des forces radiales exercées sur la roue motrice latérale (24) ne sont pas transmises à l'arbre (3).
  7. Unité hydraulique compacte selon la revendication 6, caractérisée en ce que le pignon menant latéral (24) est réalisé en forme de pot et enserre radialement et au moins d'un côté axialement le palier (25) de pignon menant.
  8. Unité hydraulique compacte selon la revendication 7, caractérisée en ce que le pignon menant latéral (24) est réalisé en forme de roue dentée et présente une couronne dentée (26) qui entoure radialement le palier (25) de pignon menant.
  9. Unité hydraulique compacte selon l'une des revendications 1 à 8, caractérisée en ce que le palier (25) de pignon menant latéral sert simultanément au montage de l'arbre (3) sur la première face frontale (8) du boítier (2).
  10. Unité hydraulique compacte selon l'une des revendications 1 à 9, caractérisée en ce que la paroi (7) de boítier enserre étroitement l'arbre (3), le pignon menant latéral (24) et, le cas échéant, la pompe de suralimentation (20).
  11. Unité hydraulique compacte selon l'une des revendications 1 à 10, caractérisée en ce que l'ouverture latérale (40) du boítier (2) est entourée par une bride de liaison (41) qui peut être bridée sur le moteur à combustion interne ou sur une transmission.
  12. Unité hydraulique compacte selon la revendication 11, caractérisée en ce que le pignon menant latéral (24) est réalisé sous forme de roue dentée qui, après bridage de la bride de liaison (41) sur le moteur à combustion interne ou sur la transmission, s'engrène avec une roue dentée du moteur à combustion interne ou de la transmission.
EP98112313A 1997-07-07 1998-07-02 Unité hydraulique compacte Expired - Lifetime EP0890741B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19728994A DE19728994C2 (de) 1997-07-07 1997-07-07 Kompakte Hydraulikeinheit
DE19728994 1997-07-07

Publications (3)

Publication Number Publication Date
EP0890741A2 EP0890741A2 (fr) 1999-01-13
EP0890741A3 EP0890741A3 (fr) 1999-09-29
EP0890741B1 true EP0890741B1 (fr) 2003-05-28

Family

ID=7834912

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98112313A Expired - Lifetime EP0890741B1 (fr) 1997-07-07 1998-07-02 Unité hydraulique compacte

Country Status (2)

Country Link
EP (1) EP0890741B1 (fr)
DE (2) DE19728994C2 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20007554U1 (de) 2000-04-26 2000-08-10 Heilmeier & Weinlein Fabrik für Oel-Hydraulik GmbH & Co KG, 81673 München Motor-Pumpenaggregat
DE102004046206A1 (de) * 2004-09-22 2006-04-06 Weber, Gisela Zahnradpumpensystem mit hydraulischer Steuerung
DE102010040979A1 (de) * 2010-09-17 2012-03-22 Mahle International Gmbh Modulare Pumpenanordnung

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2699724A (en) * 1950-06-14 1955-01-18 Thompson Prod Inc Multiple gear pump
US3597115A (en) * 1969-03-19 1971-08-03 Caterpillar Tractor Co Hydraulic pump mounting assembly
FR2096191A5 (fr) * 1970-06-10 1972-02-11 Linde Ag
DE3324583A1 (de) * 1982-07-07 1984-01-12 Linde Ag, 6200 Wiesbaden Zweimaschinen-aggregat mit anschluss fuer einen weiteren verbraucher mechanischer energie
JPS611880A (ja) * 1984-06-11 1986-01-07 Iseki & Co Ltd 油圧装置
US4925372A (en) * 1989-04-07 1990-05-15 Vickers, Incorporated Power transmission
DE4130225C1 (fr) * 1991-09-11 1992-11-26 Brueninghaus Hydraulik Gmbh, 7240 Horb, De
US5406794A (en) * 1993-05-14 1995-04-18 Curtiss Wright Flight Systems Inc. Dual variable displacement over-center hydraulic motor power drive unit
DE4423589C1 (de) * 1994-07-06 1995-07-27 Daimler Benz Ag Zahnradpumpe zur Schmierölförderung in einer Brennkraftmaschine
JPH08121328A (ja) * 1994-10-24 1996-05-14 Kawasaki Heavy Ind Ltd タンデム型斜板式油圧ポンプ

Also Published As

Publication number Publication date
DE19728994A1 (de) 1999-01-14
DE19728994C2 (de) 1999-04-22
EP0890741A3 (fr) 1999-09-29
DE59808511D1 (de) 2003-07-03
EP0890741A2 (fr) 1999-01-13

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