EP0886068A2 - Gear pump with multiple driven shafts - Google Patents

Gear pump with multiple driven shafts Download PDF

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Publication number
EP0886068A2
EP0886068A2 EP98115962A EP98115962A EP0886068A2 EP 0886068 A2 EP0886068 A2 EP 0886068A2 EP 98115962 A EP98115962 A EP 98115962A EP 98115962 A EP98115962 A EP 98115962A EP 0886068 A2 EP0886068 A2 EP 0886068A2
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EP
European Patent Office
Prior art keywords
gear pump
pump according
units
control
unit
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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.)
Granted
Application number
EP98115962A
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German (de)
French (fr)
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EP0886068B1 (en
EP0886068A3 (en
Inventor
Maurice Bussard
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.)
Maag Pump Systems AG
Original Assignee
Maag Pump Systems AG
Maag Pump Systems Textron AG
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Publication date
Application filed by Maag Pump Systems AG, Maag Pump Systems Textron AG filed Critical Maag Pump Systems AG
Priority to DE59809839T priority Critical patent/DE59809839D1/en
Priority to EP98115962A priority patent/EP0886068B1/en
Publication of EP0886068A2 publication Critical patent/EP0886068A2/en
Publication of EP0886068A3 publication Critical patent/EP0886068A3/en
Priority to US09/382,830 priority patent/US6312225B1/en
Priority to US09/963,558 priority patent/US6447256B2/en
Application granted granted Critical
Publication of EP0886068B1 publication Critical patent/EP0886068B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • F04C15/008—Prime movers
    • 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
    • F04C2240/00—Components
    • F04C2240/40—Electric motor
    • F04C2240/402—Plurality of electronically synchronised motors

Definitions

  • the present invention relates to a gear pump the preamble of claim 1.
  • gear pumps are made out of a single one driven out of the pump housing shaft.
  • Two-shaft drives are used to face the tooth flanks Protect wear or overload.
  • Known multi-shaft drives consist of distribution gears (timing gear) with which the Do not touch the tooth flanks.
  • timing gear distribution gear
  • this well-known Multi-shaft drive comes with a single drive unit Use, the force distribution on the individual shafts with the interlocking gears over the above Distribution gear takes place.
  • DE-32 30 550 C2 is also a teaching known in which a two-shaft drive with two Drive units is described. Come here DC motors for use with a control unit that on current measurements in the excitation circuit of both Drive units and a speed measurement at one Drive unit is based. With this known teaching can a target speed and a target power ratio be specified.
  • a disadvantage of the latter drive concept is that through the one-sided Speed monitoring in the case of a clutch, gearbox or Pump gear damage that is not speed monitored String consequential damage by striving for the target performance can cause. Furthermore, that is Performance ratio in a narrow range from 0.5 to 1 adjustable. Last but not least, this system is not suitable for torque pulsations due to the on the Line of action moving point of engagement, due to slightest gear inaccuracies or Differences in the stiffness of the engine and Gearbox mounting appropriately recorded and closed consider.
  • the present invention is therefore based on the object based on specifying a gear pump, which the does not have the aforementioned disadvantages.
  • the invention has the following advantages: completely symmetrical structure for the control units to control the drive units and beyond one fast data line between the two in the Control units included control units provided are achieved that despite any Torque pulses on the shafts neither the tooth flanks take off, nor that excess torque too high the tooth flanks can be transmitted.
  • the figure shows a schematic representation of a Gear pump with a two-shaft drive and two Control units SE1 and SE2 according to the invention.
  • the Gear pump essentially consists of two interlocking gears Z1 and Z2, the two are assigned to different shafts W1 and W2.
  • the Gears Z1 and Z2 and the shafts W1 and W2 are in one Pump housing G included, with the waves W1 and W2 after out and the ends of the shafts W1 and W2 each with a drive unit AE1 and. AE2 coupled are.
  • the control units SE1 and SE2 are according to the invention constructed symmetrically and consist essentially of each one control unit KE1 or KE2, one inverter each WR1 or WR2 as power converters and one each Speed measuring unit DME1 or DME2 as measuring units that each with one mounted on shafts W1 and W2 Signal generators of a known type are connected.
  • Speed measuring units DME1 and DME2 will be in the signal generator measured signal for determining the angular velocities ⁇ 1 and ⁇ 2 processed, these then following the Control units KE1 or KE2 are transmitted.
  • Control signals are in the control unit KE1 or KE2 SS1 or SS2 to control the inverter WR1 or WR2 generated.
  • the inverter WR1 or WR2 generated output signals for the drive units AE1 resp. AE2 used, with which possible non-linearities or asymmetries of the inverters WR1 or WR2 be compensated automatically.
  • the Electric drive units AE1 and AE2 Asynchronous machines (Rolf Fischer, "Electrical machines", 5th edition, Carl Hanser Verlag, 1983, pages 170 to 260).
  • the generated by the inverter WR1 or WR2 Output signals are in the figure with U1 and U2 for electrical voltage, with I1 or I2 for the electrical Current and designated with F1 or F2 for the frequency.
  • SE2 is a fast data line DL, preferably in the form of a data bus, provided via which are the angular velocities ⁇ 1 and ⁇ 2 of the waves W1 and W2 and the position of the gears Z1 and Z2 to each other can be precisely matched or adjusted.
  • the Data line DL is provided for that Angular velocity differences safely within the Control units SE1 and SE2 processed and that despite any torque pulses neither lifting the Tooth flanks are caused, which should remain in contact, nor that too much excess torque over the Tooth flanks is transmitted.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)

Abstract

The pump has two gear wheels (Z1,Z2), interlocked with each other, each fitted to spindles (W1,W2). Each of these is driven by a drive unit (AE1,AE2). They are controllable through control modules (SE1,SE2) in such a way that the spindles turn with an angular velocity (w1,w2). The control modules are symetrically designed, so that each control module is fitted with control units (KE1,KE2) that can be coupled one with the other through a data line (DL).

Description

Die vorliegende Erfindung betrifft eine Zahnradpumpe nach dem Oberbegriff des Patentanspruchs 1.The present invention relates to a gear pump the preamble of claim 1.

Üblicherweise werden Zahnradpumpen über eine einzige, aus dem Pumpengehäuse herausgeführte Welle angetrieben. In Fällen sehr hoher Drehmomente oder bei Füllstoffbeladung des Fördermediums werden gelegentlich auch Zweiwellenantriebe eingesetzt, um die Zahnflanken vor Verschleiss oder Überbelastung zu schützen.Usually gear pumps are made out of a single one driven out of the pump housing shaft. In Cases of very high torques or when the filler is loaded of the medium are occasionally also Two-shaft drives are used to face the tooth flanks Protect wear or overload.

Bekannte Mehrwellenantriebe bestehen aus Verteilgetrieben (timing gear), mit denen es gelingt, dass sich die Zahnflanken nicht berühren. Bei diesem bekannten Mehrwellenantrieb kommt eine einzige Antriebseinheit zum Einsatz, wobei die Kraftverteilung auf die einzelnen Wellen mit den ineinandergreifenden Zahnrädern über das erwähnte Verteilgetriebe erfolgt.Known multi-shaft drives consist of distribution gears (timing gear) with which the Do not touch the tooth flanks. In this well-known Multi-shaft drive comes with a single drive unit Use, the force distribution on the individual shafts with the interlocking gears over the above Distribution gear takes place.

In der DE-32 30 550 C2 ist darüber hinaus eine Lehre bekannt, bei der ein Zweiwellenantrieb mit zwei Antriebseinheiten beschrieben wird. Hierbei kommen Gleichstrommotoren zum Einsatz mit einer Regeleinheit, die auf Strommessungen im Erregerstromkreis beider Antriebseinheiten und einer Drehzahlmessung bei einer Antriebseinheit beruht. Bei dieser bekannten Lehre können eine Soll-Drehzahl und ein Soll-Leistungsverhältnis vorgegeben werden. DE-32 30 550 C2 is also a teaching known in which a two-shaft drive with two Drive units is described. Come here DC motors for use with a control unit that on current measurements in the excitation circuit of both Drive units and a speed measurement at one Drive unit is based. With this known teaching can a target speed and a target power ratio be specified.

Nachteilige bei dem letztgenannten Antriebskonzept ist, dass durch die nur einseitig vorgenommene Drehzahlüberwachung im Falle eines Kupplungs-, Getriebe-oder Pumpenverzahnungsschadens der nicht Drehzahlüberwachte Strang Folgeschäden durch Anstreben der Soll-Leistung hervorrufen kann. Des weiteren ist das Leistungsverhältnis in einem nur engen Bereich von 0.5 bis 1 einstellbar. Nicht zuletzt ist dieses System nicht geeignet, Drehmomentpulsationen aufgrund des auf der Eingriffslinie wandernden Eingriffspunktes, aufgrund von geringsten Verzahnungsungenauigkeiten oder auch Unterschiede in den Steifigkeiten der Motor- und Getriebebefestigung angemessen zu erfassen und zu berücksichtigen.A disadvantage of the latter drive concept is that through the one-sided Speed monitoring in the case of a clutch, gearbox or Pump gear damage that is not speed monitored String consequential damage by striving for the target performance can cause. Furthermore, that is Performance ratio in a narrow range from 0.5 to 1 adjustable. Last but not least, this system is not suitable for torque pulsations due to the on the Line of action moving point of engagement, due to slightest gear inaccuracies or Differences in the stiffness of the engine and Gearbox mounting appropriately recorded and closed consider.

Der vorliegenden Erfindung liegt daher die Aufgabe zugrunde, eine Zahnradpumpe anzugeben, welche die obenerwähnten Nachteile nicht aufweist.The present invention is therefore based on the object based on specifying a gear pump, which the does not have the aforementioned disadvantages.

Diese Aufgabe wird durch die im kennzeichnenden Teil des Patentanspruchs 1 angegebenen Massnahmen gelöst. Vorteilhafte Ausgestaltungen der Erfindung sind in weiteren Ansprüchen angegeben.This task is carried out in the characterizing part of the Measures specified claim 1 solved. Advantageous embodiments of the invention are in others Claims specified.

Die Erfindung weist folgende Vorteile auf: Indem eine vollständig symmetrische Struktur für die Steuereinheiten zur Steuerung der Antriebseinheiten und darüber hinaus eine schnelle Datenleitung zwischen den beiden in den Steuereinheiten enthaltenen Kontrolleinheiten vorgesehen sind, wird erreicht, dass trotz allfälligen Drehmomentpulsen auf den Wellen die Zahnflanken weder abheben, noch dass ein zu hohes Überschussdrehmoment über die Zahnflanken übertragen werden kann.The invention has the following advantages: completely symmetrical structure for the control units to control the drive units and beyond one fast data line between the two in the Control units included control units provided are achieved that despite any Torque pulses on the shafts neither the tooth flanks take off, nor that excess torque too high the tooth flanks can be transmitted.

Die Erfindung wird nachfolgend anhand einer Zeichnung beispielsweise näher erläutert. Dabei zeigt die einzige Figur in schematischer Darstellung eine Zahnradpumpe mit zwei identischen Steuereinheiten gemäss der Erfindung.The invention is described below using a drawing, for example explained in more detail. The only figure shows in a schematic representation of a gear pump with two identical control units according to the invention.

Die Figur zeigt in schematischer Darstellung eine Zahnradpumpe mit einem Zweiwellenantrieb und zwei erfindungsgemässen Steuereinheiten SE1 und SE2. Die Zahnradpumpe besteht im wesentlichen aus zwei ineinandergreifenden Zahnrädern Z1 und Z2, die zwei verschiedenen Wellen W1 und W2 zugeordnet sind. Die Zahnräder Z1 und Z2 und die Wellen W1 und W2 sind in einem Pumpengehäuse G enthalten, wobei die Wellen W1 und W2 nach aussen geführt und die herausgeführten Enden der Wellen W1 und W2 je mit einer Antriebseinheit AE1 resp. AE2 gekoppelt sind.The figure shows a schematic representation of a Gear pump with a two-shaft drive and two Control units SE1 and SE2 according to the invention. The Gear pump essentially consists of two interlocking gears Z1 and Z2, the two are assigned to different shafts W1 and W2. The Gears Z1 and Z2 and the shafts W1 and W2 are in one Pump housing G included, with the waves W1 and W2 after out and the ends of the shafts W1 and W2 each with a drive unit AE1 and. AE2 coupled are.

Die Steuereinheiten SE1 und SE2 sind erfindungsgemäss symmetrisch aufgebaut und bestehen im wesentlichen aus je einer Kontrolleinheit KE1 bzw. KE2, je einem Wechselrichter WR1 bzw. WR2 als Leistungswandler und je einer Drehzahlmesseinheit DME1 bzw. DME2 als Messeinheiten, die je mit einem auf den Wellen W1 und W2 montierten Signalgeber bekannter Art verbunden sind. In den Drehzahlmesseinheiten DME1 und DME2 wird das im Signalgeber gemessene Signal zur Bestimmung der Winkelgeschwindigkeiten ω1 und ω2 verarbeitet, wobei diese anschliessend an die Kontrolleinheiten KE1 bzw. KE2 übertragen werden.The control units SE1 and SE2 are according to the invention constructed symmetrically and consist essentially of each one control unit KE1 or KE2, one inverter each WR1 or WR2 as power converters and one each Speed measuring unit DME1 or DME2 as measuring units that each with one mounted on shafts W1 and W2 Signal generators of a known type are connected. In the Speed measuring units DME1 and DME2 will be in the signal generator measured signal for determining the angular velocities ω1 and ω2 processed, these then following the Control units KE1 or KE2 are transmitted.

In der Kontrolleinheit KE1 bzw. KE2 werden Steuersignale SS1 bzw. SS2 zum Ansteuern des Wechselrichters WR1 bzw. WR2 generiert. Hierzu werden neben der Winkelgeschwindigkeit ω1 bzw. ω2 auch durch den Wechselrichter WR1 resp. WR2 erzeugte Ausgangssignale für die Antriebseinheiten AE1 resp. AE2 verwendet, womit allfällige Nichtlinearitäten oder Asymmetrien der Wechselrichter WR1 bzw. WR2 automatisch kompensiert werden.Control signals are in the control unit KE1 or KE2 SS1 or SS2 to control the inverter WR1 or WR2 generated. In addition to the angular velocity ω1 or ω2 also by the inverter WR1 or. WR2 generated output signals for the drive units AE1 resp. AE2 used, with which possible non-linearities or asymmetries of the inverters WR1 or WR2 be compensated automatically.

In einer bevorzugten Ausführungsform der Erfindung sind die Antriebseinheiten AE1 und AE2 vom Typ elektrische Asynchronmaschinen (Rolf Fischer, "Elektrisch Maschinen", 5. Auflage, Carl Hanser Verlag, 1983, Seiten 170 bis 260). Die durch den Wechselrichter WR1 bzw. WR2 erzeugten Ausgangssignale sind in der Figur mit U1 bzw. U2 für die elektrische Spannung, mit I1 bzw. I2 fur den elektrischen Strom und mit F1 bzw. F2 für die Frequenz bezeichnet.In a preferred embodiment of the invention, the Electric drive units AE1 and AE2 Asynchronous machines (Rolf Fischer, "Electrical machines", 5th edition, Carl Hanser Verlag, 1983, pages 170 to 260). The generated by the inverter WR1 or WR2 Output signals are in the figure with U1 and U2 for electrical voltage, with I1 or I2 for the electrical Current and designated with F1 or F2 for the frequency.

Wie bereits erwähnt werden die Ausgangssignale U1, I1, F1 bzw. U2, I2, F2 zur genauen Einstellung in die Kontrolleinheit KE1 bzw. KE2 zurückgeführt. Damit ist ein erster innerer Regelkreis zur Einstellung der Drehzahl der Wellen W1 bzw. W2 vorhanden. Fasst man nämlich die Antriebseinheiten AE1 und AE2 als elektrisch-mechanische Wandler auf, dann werden die Spannungsfrequenzen F1 und F2 auf die Winkelgeschwindigkeiten ω1 und ω2 sowie die Spannunge U1 und U2 und Ströme I1 und I2 auf entsprechende Antriebsmomente abgebildet (Vektorantriebe). Ein weiterer Regelkreis entsteht durch das Messen der Wellendrehzahl mittels den Drehzahlmesseinheiten DME1 bzw. DME2 und der Rückführung der gemessenen Signale in die jeweiligen Kontrolleinheiten KE1 bzw. KE2. Dieser zweite Regelkreis wird im Zusammenhang mit der vorliegenden Erfindung als äusserer Regelkreis bezeichnet.As already mentioned, the output signals U1, I1, F1 or U2, I2, F2 for precise setting in the Control unit KE1 or KE2 returned. So that's a first inner control loop for setting the speed of the Waves W1 and W2 are available. If you take that Drive units AE1 and AE2 as electrical-mechanical Converter, then the voltage frequencies F1 and F2 on the angular velocities ω1 and ω2 as well as the Voltages U1 and U2 and currents I1 and I2 on corresponding ones Driving torques shown (vector drives). Another Control loop is created by measuring the shaft speed using the speed measuring units DME1 or DME2 and the Feedback of the measured signals into the respective Control units KE1 or KE2. This second control loop is considered in connection with the present invention called outer control loop.

Zwischen den beiden symmetrischen Steuereinheiten SE1 und SE2 ist erfindungsgemäss eine schnelle Datenleitung DL, vorzugsweise in Form eines Datenbusses, vorgesehen, über welche die Winkelgeschwindigkeiten ω1 und ω2 der Wellen W1 und W2 und die Position der Zahnräder Z1 und Z2 zueinander exakt abgestimmt bzw. eingestellt werden können. Die Datenleitung DL ist vorgesehen, dass Winkelgeschwindigkeitsunterschiede sicher innerhalb der Steuereinheiten SE1 und SE2 verarbeitet und dass trotz allfälliger Drehmomentpulse weder ein Abheben der Zahnflanken bewirkt wird, welche in Kontakt bleiben sollen, noch dass ein zu hohes Überschussdrehmoment über die Zahnflanken übertragen wird.Between the two symmetrical control units SE1 and According to the invention, SE2 is a fast data line DL, preferably in the form of a data bus, provided via which are the angular velocities ω1 and ω2 of the waves W1 and W2 and the position of the gears Z1 and Z2 to each other can be precisely matched or adjusted. The Data line DL is provided for that Angular velocity differences safely within the Control units SE1 and SE2 processed and that despite any torque pulses neither lifting the Tooth flanks are caused, which should remain in contact, nor that too much excess torque over the Tooth flanks is transmitted.

In einer weiteren Ausführungsform der Erfindung ist vorgesehen, dass an die als Datenbus ausgebildete Datenleitung DL eine Recheneinheit angeschlossen wird, über die beispielsweise eine Drehzahleinstellung vorgenommen werden kann, insbesondere im Zusammenhang mit anderen Verfahrenskomponenten, mit denen die Zahnradpumpe verbunden ist.In another embodiment of the invention provided that to the trained as a data bus Data line DL is connected to a computing unit which for example made a speed setting can be, especially in connection with others Process components with which the gear pump is connected is.

Claims (9)

Zahnradpumpe, bestehend aus zwei, je einer Welle (W1, W2) zugeordneten und ineinandergreifenden Zahnrädern (Z1, Z2), die je mit einer Antriebseinheit (AE1, AE2) angetrieben werden, wobei die Antriebseinheiten (AE1, AE2) je durch eine Steuereinheit (SE1, SE2) derart steuerbar sind, dass die Wellen (W1, W2) mit einer vorgebbaren Drehzahl (ω1, ω2) drehen, dadurch gekennzeichnet, dass die Steuereinheiten (SE1, SE2) über eine Datenleitung (DL) verbindbar sind.Gear pump, consisting of two, one shaft each (W1, W2) assigned and intermeshing gears (Z1, Z2), each with a drive unit (AE1, AE2) are driven, the drive units (AE1, AE2) each controllable in this way by a control unit (SE1, SE2) are that the waves (W1, W2) with a definable Rotate speed (ω1, ω2), characterized in that the Control units (SE1, SE2) via a data line (DL) are connectable. Zahnradpumpe nach Anspruch 1, dadurch gekennzeichnet, dass die Steuereinheiten (SE1, SE2) symmetrisch zueinander aufgebaut sind.Gear pump according to claim 1, characterized in that the control units (SE1, SE2) symmetrical to each other are built up. Zahnradpumpe nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass für jede Antriebseinheit (AE1, AE2) ein Leistungswandler (WR1, WR2) vorgesehen ist, der mit der jeweiligen Antriebseinheit (AE1, AE2) wirkverbunden ist, und dass in jeder Steuereinheit (SE1, SE2) eine Kontrolleinheit (KE1, KE2) zur Erzeugung von Steuersignalen (SS1, SS2) vorgesehen ist, die den entsprechenden Leistungswandlern (WR1, WR2) beaufschlagt sind, wobei die zwischen den Steuereinheiten (SE1, SE2) vorhandene Datenleitung (DL) auf die jeweiligen Kontrolleinheiten (KE1, KE2) der Steuereinheiten (SE1, SE2) geführt sind. Gear pump according to claim 1 or 2, characterized characterized that for each drive unit (AE1, AE2) a power converter (WR1, WR2) is provided, which with the the respective drive unit (AE1, AE2) is operatively connected, and that in each control unit (SE1, SE2) Control unit (KE1, KE2) for generating control signals (SS1, SS2) is provided, the corresponding Power converters (WR1, WR2) are applied, the existing between the control units (SE1, SE2) Data line (DL) to the respective control units (KE1, KE2) of the control units (SE1, SE2) are guided. Zahnradpumpe nach Anspruch 3, dadurch gekennzeichnet, dass die Leistungswandlerausgangssignale oder zu diesen proportionale Signale in die entsprechende Kontrolleinheit (KE1, KE2) zurückgeführt sind.Gear pump according to claim 3, characterized in that the power converter output signals or to these proportional signals in the corresponding control unit (KE1, KE2) are returned. Zahnradpumpe nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die Antriebseinheiten (AE1, AE2) vom Typ Asynchronmaschinen sind.Gear pump according to one of the preceding claims, characterized in that the drive units (AE1, AE2) are of the asynchronous machine type. Zahnradpumpe nach Anspruch 5, dadurch gekennzeichnet, dass die Leistungswandler (WR1, WR2) vom Typ Wechselrichter zur Erzeugung von Strom (I1, I2), Spannung (U1, U2) und Frequenz (F1, F2) sind.Gear pump according to claim 5, characterized in that the power converters (WR1, WR2) of the inverter type to generate current (I1, I2), voltage (U1, U2) and Frequency (F1, F2) are. Zahnradpumpe nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass für jede Welle (W1, W2) eine Drehzahlmesseinheit (DME1, DME2) zur Bestimmung der jeweiligen Wellendrehzahl (ω1, ω2) und/oder der jeweiligen Position der Wellen (W1, W2) zueinander vorgesehen ist, wobei die Drehzahlmesseinheiten (DME1, DME2) je mit der entsprechenden Kontrolleinheit (KE1, KE2) wirkverbunden sind.Gear pump according to one of the preceding claims, characterized in that for each wave (W1, W2) Speed measuring unit (DME1, DME2) for determining the respective shaft speed (ω1, ω2) and / or the respective Position of the shafts (W1, W2) is provided to each other, where the speed measuring units (DME1, DME2) each with the corresponding control unit (KE1, KE2) operatively connected are. Zahnradpumpe nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass das Leistungsverhältnis zwischen den beiden Antriebseinheiten (AE1, AE2) zwischen 0.05 und 1 einstellbar ist.Gear pump according to one of the preceding claims, characterized in that the performance ratio between the two drive units (AE1, AE2) between 0.05 and 1 is adjustable. Zahnradpumpe nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass eine Recheneinheit an die Datenleitung (DL) anschliessbar ist.Gear pump according to one of the preceding claims, characterized in that a computing unit to the Data line (DL) can be connected.
EP98115962A 1998-08-25 1998-08-25 Gear pump with multiple driven shafts Expired - Lifetime EP0886068B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE59809839T DE59809839D1 (en) 1998-08-25 1998-08-25 Gear pump with a multi-shaft drive
EP98115962A EP0886068B1 (en) 1998-08-25 1998-08-25 Gear pump with multiple driven shafts
US09/382,830 US6312225B1 (en) 1998-08-25 1999-08-25 Gear pump having a multishaft drive and method of operating same
US09/963,558 US6447256B2 (en) 1998-08-25 2001-09-27 Gear pump having a multishaft drive and method of operating same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP98115962A EP0886068B1 (en) 1998-08-25 1998-08-25 Gear pump with multiple driven shafts

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EP0886068A2 true EP0886068A2 (en) 1998-12-23
EP0886068A3 EP0886068A3 (en) 1999-03-17
EP0886068B1 EP0886068B1 (en) 2003-10-08

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EP98115962A Expired - Lifetime EP0886068B1 (en) 1998-08-25 1998-08-25 Gear pump with multiple driven shafts

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US (2) US6312225B1 (en)
EP (1) EP0886068B1 (en)
DE (1) DE59809839D1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1249608A1 (en) 2001-10-24 2002-10-16 Maag Pump Systems Textron AG Device, like an extrusion machine, comprising a direct driven gear pump

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005119066A2 (en) * 2004-06-04 2005-12-15 Entek Manufacturing Inc. Gear for use in a gear pump
DE102004036505A1 (en) * 2004-07-28 2006-03-16 Daimlerchrysler Ag powertrain
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US6312225B1 (en) 2001-11-06
EP0886068B1 (en) 2003-10-08
US20020009368A1 (en) 2002-01-24
EP0886068A3 (en) 1999-03-17
DE59809839D1 (en) 2003-11-13
US6447256B2 (en) 2002-09-10

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