DE19717455A1 - Pump arrangement - Google Patents

Pump arrangement

Info

Publication number
DE19717455A1
DE19717455A1 DE1997117455 DE19717455A DE19717455A1 DE 19717455 A1 DE19717455 A1 DE 19717455A1 DE 1997117455 DE1997117455 DE 1997117455 DE 19717455 A DE19717455 A DE 19717455A DE 19717455 A1 DE19717455 A1 DE 19717455A1
Authority
DE
Germany
Prior art keywords
pump
drive
hollow shaft
shaft
driven
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.)
Withdrawn
Application number
DE1997117455
Other languages
German (de)
Inventor
Klaus-Dieter Buchmueller
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.)
Bosch Rexroth AG
Original Assignee
Mannesmann Rexroth AG
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 Mannesmann Rexroth AG filed Critical Mannesmann Rexroth AG
Priority to DE1997117455 priority Critical patent/DE19717455A1/en
Publication of DE19717455A1 publication Critical patent/DE19717455A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D5/00—Power-assisted or power-driven steering
    • B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
    • B62D5/062—Details, component parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B63/00—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices
    • F02B63/06—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices for pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C11/00—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations
    • F04C11/001—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations of similar working principle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/0057—Driving elements, brakes, couplings, transmission specially adapted for machines or pumps
    • F04C15/0061—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
    • F04C23/001—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids of similar working principle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P7/00—Controlling of coolant flow
    • F01P7/02—Controlling of coolant flow the coolant being cooling-air
    • F01P7/04—Controlling of coolant flow the coolant being cooling-air by varying pump speed, e.g. by changing pump-drive gear ratio
    • F01P7/044—Controlling of coolant flow the coolant being cooling-air by varying pump speed, e.g. by changing pump-drive gear ratio using hydraulic drives

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)

Abstract

The driveshafts (6,5) of the two pumps (1,2) are driven by the common drive independently of one another. The pump (1) with the largest pump volume is arranged closest to the drive, and is driven by the hollow shaft. The hollow shaft has an intended breakpoint (4). The pump arrangement is installed in a road vehicle and the first pump (1) is a fan pump and the second is a steering aid pump (2). The second pump is furthest away from the drive, with its drive shaft (6) passing through the hollow shaft (5). The shaft of the second pump is connected via a gearwheel (3) with the drive. The intended breakpoint is formed by an all-round breakpoint.

Description

Die Erfindung betrifft eine Pumpenanordnung mit zwei hinter­ einander angeordneten Pumpen mit einem gemeinsamen Antrieb.The invention relates to a pump arrangement with two behind mutually arranged pumps with a common drive.

Eine derartige Pumpenanordnung ist aus der DE 33 07 790 A1 be­ kannt. Gemäß der darin beschriebenen Ausführungsform sind zwei hintereinander angeordnete Pumpen über eine gemeinsame An­ triebswelle angetrieben. Die gemeinsame Welle ist in einem ge­ meinsamen Gehäuse zwischen den beiden Pumpen gelagert. Aus der DE 39 04 874 A1 ist eine weitere Pumpenanordnung bekannt bei der eine Pumpe über die Antriebswelle der anderen Pumpe ange­ trieben wird. Bei den beschriebenen Pumpenkombinationen ist es nachteilig, daß wenn die eine Pumpe blockiert wird, die andere Pumpe auch nicht angetrieben wird.Such a pump arrangement is from DE 33 07 790 A1 knows. According to the embodiment described therein, there are two Pumps arranged one behind the other via a common type drive shaft driven. The common wave is in one ge shared housing between the two pumps. From the Another pump arrangement is known from DE 39 04 874 A1 one pump is driven by the drive shaft of the other pump is driven. It is with the pump combinations described disadvantageous that if one pump is blocked, the other Pump is also not driven.

Aufgabe der vorliegenden Erfindung ist es, eine gattungsgemäße Pumpenanordnung so weiterzubilden, daß beim Ausfall einer Pum­ pe die andere Pumpe weiterarbeitet.The object of the present invention is a generic Develop pump arrangement so that in the event of failure of a pump pe the other pump continues to work.

Diese Aufgabe ist durch eine Pumpenanordnung mit den Merkmalen des Anspruchs 1 gelöst. Unteransprüche stellen vorteilhafte Weiterbildungen dar. This task is accomplished by a pump arrangement with the features of claim 1 solved. Subclaims are advantageous Further training.  

Die Pumpenanordnung sieht vor, daß die eine Pumpe über eine Welle angetrieben wird, die durch eine Hohlwelle der anderen Pumpe hindurchgeführt ist. Die Hohlwelle der einen Pumpe und die Antriebswelle der anderen Pumpe werden durch einen gemein­ samen Antrieb angetrieben. Die Anordnung sieht vor, daß die näher am Antrieb angeordnete Pumpe durch die Hohlwelle ange­ trieben wird und daß durch diese Hohlwelle hindurch die An­ triebswelle der zweiten, weiter weg vom Antrieb angeordneten Pumpe hindurchgeführt wird. Blockiert die durch die Hohlwelle angetriebene Pumpe, so kann die zweite Pumpe noch weiterarbei­ ten, da sie zwar über einen gemeinsamen Antrieb aber unabhän­ gig von der ersten Pumpe angetrieben wird. Die Hohlwelle der ersten Pumpe weist eine Sollbruchstelle auf, so daß sie bei einer einen bestimmten Wert übersteigenden Belastung bricht womit die Beschädigung des Antriebs vermieden wird und die zweite Pumpe weiterhin arbeiten kann.The pump arrangement provides that the one pump via a Shaft is driven by a hollow shaft of the other Pump is passed. The hollow shaft of one pump and the drive shaft of the other pump are shared by one driven drive. The order provides that the Pump arranged closer to the drive through the hollow shaft is driven and that through this hollow shaft through drive shaft of the second, further away from the drive Pump is passed through. Blocks the through the hollow shaft driven pump, the second pump can continue to work ten as they are independent via a common drive gig is driven by the first pump. The hollow shaft of the first pump has a predetermined breaking point, so that it at a load that exceeds a certain value breaks which prevents damage to the drive and the second pump can continue to work.

Es ist vorteilhaft wenn die Pumpe mit dem größeren Pumpvolumen näher am Antrieb angeordnet ist und durch die Hohlwelle ange­ trieben wird und die Pumpe mit dem kleineren Pumpvolumen durch die durch die Hohlwelle hindurchgehende Welle angetrieben wir­ d,und weiter weg vom Antrieb angeordnet ist.It is advantageous if the pump with the larger pump volume is arranged closer to the drive and by the hollow shaft is driven and the pump with the smaller pump volume we drive the shaft passing through the hollow shaft d, and is located further away from the drive.

Die beschriebene Pumpenanordnung eignet sich insbesondere zum Einsatz in Kraftfahrzeugen. Dabei besteht die Pumpenanordnung aus einer Lüfter- und einer Lenkhilfepumpe, wobei die Lüfter­ pumpe näher am Antrieb angeordnet ist und durch die Hohlwelle angetrieben wird. Die Lenkhilfepumpe ist weiter weg vom An­ trieb angeordnet und wird durch die Vollwelle angetrieben. The pump arrangement described is particularly suitable for Use in motor vehicles. There is the pump arrangement from a fan and a power steering pump, the fans pump is located closer to the drive and through the hollow shaft is driven. The power steering pump is further away from the start arranged and is driven by the solid shaft.  

Blockiert die Lüfterpumpe, so bricht beim Erreichen des Grenz­ belastungswertes die Hohlwelle an ihrer Sollbruchstelle. Die Lenkhilfepumpe arbeitet ohne Beeinträchtigung weiter.If the fan pump blocks, it breaks when the limit is reached the hollow shaft at its predetermined breaking point. The Power steering pump continues to operate without impairment.

Die Erfindung wird anhand eines in den Figuren dargestellten Ausführungsbeispiels näher erläutert. Es zeigen:The invention is illustrated by means of one in the figures Embodiment explained in more detail. Show it:

Fig. 1 Einen Längsschnitt durch die Pumpenanordnung. Fig. 1 shows a longitudinal section through the pump arrangement.

Fig. 2 Einen Schnitt durch die Lüfterpumpe. Fig. 2 shows a section through the fan pump.

Die Pumpenanordnung weist in einem mehrteiligen Gehäuse zwei hintereinander angeordnete Pumpen 1, 2 auf. Die Pumpe 1 (Lüf­ terpumpe) befindet sich näher am Antrieb und wird durch eine Hohlwelle 5, die ihrerseits über eine Kupplung mit einem Zahn­ rad 3, d. h. dem Antrieb verbunden ist, angetrieben. Die Pumpe 2 (Lenkhilfepumpe) ist weiter weg vom Antrieb angeordnet und ihre Antriebswelle 6 geht durch die Hohlwelle 5 hindurch. Die Welle 6 der Pumpe 2 ist ebenfalls über das Zahnrad 3 mit dem Antrieb verbunden. Die Hohlwelle 5 weist im Bereich ihrer Ver­ bindung mit dem Antrieb eine Sollbruchstelle auf, die als eine umlaufende Kerbe 4 ausgebildet ist. Bei einem ungestörten Be­ trieb beider Pumpen 1, 2 werden diese durch die beiden Wellen 5, 6 angetrieben und arbeiten gleichmäßig. Sollte die Lüfter­ pumpe 1 durch eine Störung blockieren, so bricht die Hohlwelle 5 beim Erreichen eines bestimmten Belastungsgrenzwertes an ih­ rer Sollbruchstelle 4. Dadurch wird der Antrieb der beiden Pumpen durch Überbeanspruchung nicht beschädigt und die Lenk­ hilfepumpe 2 arbeitet weiter.The pump arrangement has two pumps 1 , 2 arranged one behind the other in a multi-part housing. The pump 1 (fan pump) is closer to the drive and is driven by a hollow shaft 5 , which in turn is connected via a clutch to a toothed wheel 3 , ie the drive. The pump 2 (power steering pump) is arranged further away from the drive and its drive shaft 6 passes through the hollow shaft 5 . The shaft 6 of the pump 2 is also connected to the drive via the gear 3 . The hollow shaft 5 has a predetermined breaking point in the area of its connection with the drive, which is designed as a circumferential notch 4 . In an undisturbed operation of both pumps 1 , 2 , these are driven by the two shafts 5 , 6 and work evenly. Should the fan pump 1 block due to a malfunction, the hollow shaft 5 breaks when it reaches a certain load limit value at its predetermined breaking point 4 . As a result, the drive of the two pumps is not damaged by overuse and the steering aid pump 2 continues to work.

Claims (6)

1. Pumpenanordnung mit zwei hintereinander angeordneten Pum­ pen und mit einem gemeinsamen Antrieb für beide Pumpen, da­ durch gekennzeichnet, daß die Antriebswelle (6) der einen Pum­ pe (2) durch die als Hohlwelle (5) ausgebildete Antriebswelle der anderen Pumpe (1) hindurchgeht.1. Pump arrangement with two pumps arranged one behind the other and with a common drive for both pumps, characterized in that the drive shaft ( 6 ) of one pump ( 2 ) through the drive shaft of the other pump ( 1 ) designed as a hollow shaft ( 5 ) goes through. 2. Pumpenanordnung nach Anspruch 1, dadurch gekennzeichnet, daß die Antriebswellen (5, 6) der beiden Pumpen (1, 2) durch den gemeinsamen Antrieb unabhängig voneinander angetrieben sind.2. Pump arrangement according to claim 1, characterized in that the drive shafts ( 5 , 6 ) of the two pumps ( 1 , 2 ) are driven independently of one another by the common drive. 3. Pumpenanordnung nach, einem der vorangegangenen Ansprü­ che, dadurch gekennzeichnet, daß die Pumpe (1) mit dem größe­ ren Pumpvolumen näher am Antrieb angeordnet ist.3. Pump arrangement according to, one of the preceding and workman surface, characterized in that the pump ( 1 ) with the larger pump volume is arranged closer to the drive. 4. Pumpenanordnung nach einem der vorangegangenen Ansprüche, dadurch gekennzeichnet, daß die näher am Antrieb angeordnete Pumpe (1) durch die Hohlwelle (5) angetrieben wird. 4. Pump arrangement according to one of the preceding claims, characterized in that the pump ( 1 ) arranged closer to the drive is driven by the hollow shaft ( 5 ). 5. Pumpenanordnung nach einem der vorangegangenen Ansprüche, dadurch gekennzeichnet, daß die Hohlwelle (5) eine Sollbruch­ stelle (4) aufweist.5. Pump arrangement according to one of the preceding claims, characterized in that the hollow shaft ( 5 ) has a predetermined breaking point ( 4 ). 6. Pumpenanordnung nach einem der vorangegangenen Ansprü­ che, dadurch gekennzeichnet, daß sie in Kraftfahrzeugen einge­ setzt wird, und daß die erste Pumpe (1) eine Lüfterpumpe und die zweite Pumpe (2) eine Lenkhilfepumpe ist.6. Pump arrangement according to one of the preceding Ansprü surface, characterized in that it is inserted into motor vehicles, and that the first pump ( 1 ) is a fan pump and the second pump ( 2 ) is a power steering pump.
DE1997117455 1997-04-25 1997-04-25 Pump arrangement Withdrawn DE19717455A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1997117455 DE19717455A1 (en) 1997-04-25 1997-04-25 Pump arrangement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1997117455 DE19717455A1 (en) 1997-04-25 1997-04-25 Pump arrangement

Publications (1)

Publication Number Publication Date
DE19717455A1 true DE19717455A1 (en) 1998-10-29

Family

ID=7827703

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1997117455 Withdrawn DE19717455A1 (en) 1997-04-25 1997-04-25 Pump arrangement

Country Status (1)

Country Link
DE (1) DE19717455A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10245306A1 (en) * 2002-09-27 2004-04-08 Berstorff Gmbh Extruder and gear pump combination for processing rubbers and plastics incorporates the pump shaft inside the hollow screw shaft

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE696069C (en) * 1936-12-30 1940-09-26 Joseph Schaefers Pump unit with two or more independent gear pumps
DE1903297B2 (en) * 1969-01-23 1975-11-06 Zahnradfabrik Friedrichshafen Ag, 7990 Friedrichshafen Double gear pump
DE3004918A1 (en) * 1980-02-09 1981-08-20 Robert Bosch Gmbh, 7000 Stuttgart Gear pump or motor - has two pairs of meshing gears with different gear ratios alternately drivable e.g. via solid through hollow shafts
DE3904874A1 (en) * 1988-02-17 1989-08-31 Vickers Systems Gmbh Tandem pump
DE3811773A1 (en) * 1988-04-08 1989-10-19 Pierburg Gmbh FUEL SUPPLY DEVICE FOR AN INTERNAL COMBUSTION ENGINE

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE696069C (en) * 1936-12-30 1940-09-26 Joseph Schaefers Pump unit with two or more independent gear pumps
DE1903297B2 (en) * 1969-01-23 1975-11-06 Zahnradfabrik Friedrichshafen Ag, 7990 Friedrichshafen Double gear pump
DE3004918A1 (en) * 1980-02-09 1981-08-20 Robert Bosch Gmbh, 7000 Stuttgart Gear pump or motor - has two pairs of meshing gears with different gear ratios alternately drivable e.g. via solid through hollow shafts
DE3904874A1 (en) * 1988-02-17 1989-08-31 Vickers Systems Gmbh Tandem pump
DE3811773A1 (en) * 1988-04-08 1989-10-19 Pierburg Gmbh FUEL SUPPLY DEVICE FOR AN INTERNAL COMBUSTION ENGINE

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10245306A1 (en) * 2002-09-27 2004-04-08 Berstorff Gmbh Extruder and gear pump combination for processing rubbers and plastics incorporates the pump shaft inside the hollow screw shaft
DE10245306B4 (en) * 2002-09-27 2006-03-30 Berstorff Gmbh Extruder / gear pump assembly
US7290923B2 (en) 2002-09-27 2007-11-06 Berstorff Gmbh Extruder/gear pump assembly

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Legal Events

Date Code Title Description
OM8 Search report available as to paragraph 43 lit. 1 sentence 1 patent law
8139 Disposal/non-payment of the annual fee