EP2188534B1 - Rotor mounting - Google Patents

Rotor mounting Download PDF

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Publication number
EP2188534B1
EP2188534B1 EP08801957.5A EP08801957A EP2188534B1 EP 2188534 B1 EP2188534 B1 EP 2188534B1 EP 08801957 A EP08801957 A EP 08801957A EP 2188534 B1 EP2188534 B1 EP 2188534B1
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EP
European Patent Office
Prior art keywords
shaft
rotor
shaft end
impeller
rotor hub
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.)
Not-in-force
Application number
EP08801957.5A
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German (de)
French (fr)
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EP2188534A1 (en
Inventor
Christoph Jäger
Rolf Witzel
Heinrich Braun
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KSB SE and Co KGaA
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KSB SE and Co KGaA
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Application filed by KSB SE and Co KGaA filed Critical KSB SE and Co KGaA
Publication of EP2188534A1 publication Critical patent/EP2188534A1/en
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Publication of EP2188534B1 publication Critical patent/EP2188534B1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/18—Rotors
    • F04D29/20—Mounting rotors on shafts

Definitions

  • the invention relates to an impeller mounting at one end of a shaft, in particular a shaft end of a centrifugal pump assembly, wherein at the shaft end a mating surface and at least one contact surface are formed, wherein an impeller hub is provided at least at its end facing the shaft with a central bore with internal thread and by means of threaded connection on Shaft end is fixed, wherein the shaft has at least at its the wheel hub end facing a central bore with internal thread, wherein a trained as a separate component threaded pin in both center holes connecting, torque and force is arranged.
  • the FR 2 288 888 A2 shows an impeller attachment of a pump by means of a screw with two threaded sections and an intermediate mating surface.
  • the invention is therefore an object of the invention to provide a wheel mounting, which is less expensive to produce, easy assembly and disassembly of the wheel allows and has very good round and flat running properties.
  • the solution to the problem provides that the impeller hub is aligned only on the fitting and contact surfaces on the shaft. This leads to very good concentricity and axial runout properties.
  • the threaded pin acts as a kind of joint, whereby only the mating and contact surfaces ensure concentricity and axial runout accuracy. This also allows operation of such an impeller with very high speeds, which is advantageous for speed-controlled centrifugal pump units.
  • the power transmission or torque transmission is provided solely by the threaded pin, the concentricity of the shaft solely by the centering on the mating surface and the axial runout through the contact surfaces.
  • An embodiment of the invention provides that at the shaft end a cylindrical centering surface and an axial bearing surfaces are formed. On these surfaces is an impeller hub in the assembled state and is thereby aligned with the shaft.
  • an axial extent of the cylindrical centering surface is equal to or greater than the diameter thereof. As a result, a sufficiently large mating surface is created.
  • Another embodiment provides that the central bore of the hub and / or the central bore of the shaft end is designed as a blind hole. Thus, the thread is protected against penetration of pumped liquid.
  • an impeller mounting is provided with a conical surface arranged at one end of a shaft, wherein the shaft has a central bore with internal thread at least at its end facing the impeller hub, connecting a threaded pin designed as a separate component in both central bores, transmitting torque and force and the Impeller hub exclusively on the conical surface, which forms both mating and contact surface, is aligned with the shaft.
  • Such impeller attachment offers advantages in manufacturing due to the reduced number of surfaces to be machined.
  • the threaded pin is provided at least one end with a tool holder. As a result, this can be brought, for example, in a simple manner in its mounting position within the central bore.
  • Fig. 1 shows a section of a centrifugal pump assembly and a wheel mounting according to the prior art. For the sake of clarity, only the relevant parts for a wheel mounting are shown.
  • the shaft end 5 has a cylindrical mating surface 7 and a radial contact surface 8.
  • the impeller 1 is screwed with its impeller hub 2 on the threaded stub 6 of the shaft end 5. Due to manufacturing tolerances, this solution has the disadvantage on that the thread 4 causes during assembly of the impeller hub 2 on the shaft end 5 a tilting of the impeller hub 2 relative to the shaft.
  • the consequences are insufficient concentricity properties and / or run-flat properties of shaft and impeller 1.
  • the Fig. 2 shows an impeller attachment according to the invention.
  • An impeller 11 has an impeller hub 12 with a central bore 13 and an internal thread 14. Furthermore, a shaft end 15 is shown.
  • the shaft end 15 has a hollow shaft 16 with internal thread 17.
  • a threaded pin 18 which is screwed into the central bore 16 during assembly.
  • the tool holder 19 which may be formed, for example, as a hexagon socket, slot or key surface, it can be screwed with conventional tools in the central bore 16.
  • the impeller hub 12 is a cylindrical mating surface 20 for pre-centering. This fitting or centering surface 20 is designed such that good concentricity and during operation of an aggregate good concentricity properties are achieved during assembly.
  • the threaded pin 18 can move loosely and the fit or alignment of the impeller is done only via the designated fitting surface 20 and the contact surface 21st
  • the threaded pin 18 which is arranged to connect in both central bores 13, 16, as a separate component decoupling is achieved within the impeller mounting.
  • the threaded pin 18 fulfills the function of a torque or power transmission.
  • the alignment of the impeller hub takes place exclusively via the mating surface 20 and the contact surface 21.
  • the mating surface 20 ensures the concentricity properties and the contact surface 21 the axial runout properties of the arrangement. This leads to very good concentricity and axial runout properties.
  • the decoupled thread can no longer tilt the wheel to be fastened 11 relative to the shaft. This also allows operation of such an impeller 11 at very high speeds, which is advantageous for speed-controlled centrifugal pump units.
  • the Fig. 3 shows another invention wheel mounting with impeller 31, an impeller hub 32 and a through-drilled through the impeller central bore 33.
  • a shaft end 34 also has a central bore 36.
  • the shaft end 34 is provided with a conical surface 35.
  • the conical surface 35 simultaneously forms investment as well as mating surface and offers the additional advantage of ease of manufacture.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Description

Die Erfindung betrifft eine Laufradbefestigung an einem Ende einer Welle, insbesondere einem Wellenende eines Kreiselpumpenaggregates, wobei am Wellenende eine Passfläche und mindestens eine Anlagefläche ausgebildet sind, wobei eine Laufradnabe wenigstens an ihrem der Welle zugewandten Ende mit einer Mittelbohrung mit Innengewinde versehen ist und mittels Gewindeverschraubung am Wellenende befestigt ist, wobei die Welle wenigstens an ihrem der Laufradnabe zugewandten Ende eine Mittelbohrung mit Innengewinde aufweist, wobei ein als separates Bauteil ausgebildeter Gewindestift in beiden Mittelbohrungen verbindend, drehmoment- und kräfteübertragend angeordnet ist.The invention relates to an impeller mounting at one end of a shaft, in particular a shaft end of a centrifugal pump assembly, wherein at the shaft end a mating surface and at least one contact surface are formed, wherein an impeller hub is provided at least at its end facing the shaft with a central bore with internal thread and by means of threaded connection on Shaft end is fixed, wherein the shaft has at least at its the wheel hub end facing a central bore with internal thread, wherein a trained as a separate component threaded pin in both center holes connecting, torque and force is arranged.

Es ist bekannt, Laufräder von aus Pumpe und Motor bestehenden Kreiselpumpenaggregaten an einem mit einem Gewindestumpf ausgeführten Wellenende des Motors aufzuschrauben. Dabei weist das Wellenende eine oder mehrere zylindrische Passflächen und ein oder mehrere axiale Anlageflächen auf. Bei der Montage eines Laufrades auf ein solches Wellenende wird die Laufradnabe auf den Gewindestumpf aufgeschraubt. Bedingt durch Fertigungstoleranzen weist eine solche Lösung den Nachteil auf, dass das Gewinde bei der Montage der Laufradnabe auf das Wellenende eine Verkantung der Laufradnabe gegenüber der Welle verursacht. Die Folgen sind unzureichende Rundlaufeigenschaften und/oder Planlaufeigenschaften der zu fügenden Teile. Zusätzlich besteht die Gefahr eines Festfressens bei Gewinde und Anlageflächen, wodurch eine eventuelle Demontage der Anordnung erschwert ist.It is known to unscrew wheels of existing pump and motor centrifugal pump units on a running with a threaded stem shaft end of the engine. In this case, the shaft end has one or more cylindrical mating surfaces and one or more axial abutment surfaces. When mounting an impeller on such a shaft end, the impeller hub is screwed onto the threaded stub. Due to manufacturing tolerances, such a solution has the disadvantage that the thread causes a tilting of the impeller hub relative to the shaft during assembly of the impeller hub on the shaft end. The consequences are insufficient concentricity properties and / or run-out properties of the parts to be joined. In addition, there is a risk of seizure at thread and contact surfaces, whereby a possible disassembly of the arrangement is difficult.

Die FR 2 288 888 A2 zeigt eine Laufradbefestigung einer Pumpe mittels einer Schraube mit zwei Gewindeabschnitten und einer dazwischenliegenden Passfläche.The FR 2 288 888 A2 shows an impeller attachment of a pump by means of a screw with two threaded sections and an intermediate mating surface.

Der Erfindung liegt somit die Aufgabe zugrunde, eine Laufradbefestigung zu schaffen, die wenig aufwändig herstellbar ist, eine leichte Montage und Demontage des Laufrades ermöglicht sowie sehr gute Rund- und Planlaufeigenschaften aufweist.The invention is therefore an object of the invention to provide a wheel mounting, which is less expensive to produce, easy assembly and disassembly of the wheel allows and has very good round and flat running properties.

Die Lösung des Problems sieht vor, dass die Laufradnabe ausschließlich über die Pass- und Anlageflächen an der Welle ausgerichtet ist. Dies führt zu sehr guten Rundlauf- und Planlaufeigenschaften. In Folge des in Nabe- und Wellenende mittig angeordneten Gewindestiftes und den Toleranzen in den Gewindegängen, können beim Anziehen der Verbindung die entkoppelten Gewinde ein zu fügendes Laufrad nicht mehr gegenüber der Welle verkanten. Der Gewindestift wirkt als eine Art von Gelenk, wodurch ausschließlich die Pass- und Anlageflächen eine Rundlauf- und Planlaufgenauigkeit gewährleisten. Dies ermöglicht auch einen Betrieb eines solchen Laufrades mit sehr hohen Drehzahlen, welches vorteilhaft für drehzahlgeregelte Kreiselpumpenaggregate ist.The solution to the problem provides that the impeller hub is aligned only on the fitting and contact surfaces on the shaft. This leads to very good concentricity and axial runout properties. As a result of centrally located in hub and shaft end threaded pin and the tolerances in the threads, when tightening the connection, the decoupled thread can no longer tilt an impeller to be joined opposite the shaft. The threaded pin acts as a kind of joint, whereby only the mating and contact surfaces ensure concentricity and axial runout accuracy. This also allows operation of such an impeller with very high speeds, which is advantageous for speed-controlled centrifugal pump units.

Gleichzeitig ist ein Fressen des Gewindes oder der Anlageflächen wirksam verhindert, was auch eine leichte Demontage der Anordnung ermöglicht. Durch den zusätzlichen Freiheitsgrad des Gewindes durch den separaten Gewindestift ist die Möglichkeit geschaffen, dass sich das kräfteübertragende Verbindungsmittel in Form des Gewindestiftes den Gegebenheiten der Pass- und Anlageflächen anpasst. Somit ist die Kraftübertragung bzw. Drehmomentübertragung allein durch den Gewindestift, die Rundlaufeigenschaften der Welle allein durch die Zentrierung über die Passfläche und die Planlaufeigenschaft durch die Anlageflächen gegeben.At the same time a seizure of the thread or the contact surfaces is effectively prevented, which also allows easy disassembly of the arrangement. The additional degree of freedom of the thread through the separate threaded pin creates the possibility that the force-transmitting connecting means in the form of the threaded pin adapts to the conditions of the fitting and contact surfaces. Thus, the power transmission or torque transmission is provided solely by the threaded pin, the concentricity of the shaft solely by the centering on the mating surface and the axial runout through the contact surfaces.

Eine Ausgestaltung der Erfindung sieht vor, dass am Wellenende eine zylindrische Zentrierfläche und eine axiale Anlageflächen ausgebildet sind. An diesen Flächen liegt eine Laufradnabe in montiertem Zustand an und ist dadurch an der Welle ausgerichtet.An embodiment of the invention provides that at the shaft end a cylindrical centering surface and an axial bearing surfaces are formed. On these surfaces is an impeller hub in the assembled state and is thereby aligned with the shaft.

Dabei ist es von Vorteil, wenn eine axiale Erstreckung der zylindrischen Zentrierfläche gleich oder größer als deren Durchmesser ist. Dadurch ist eine ausreichend große Passfläche geschaffen. Während einer Montage des Kreiselpumpenaggregates ist das Laufrad über die zylindrische Zentrierfläche am Wellenende vorzentrierbar.It is advantageous if an axial extent of the cylindrical centering surface is equal to or greater than the diameter thereof. As a result, a sufficiently large mating surface is created. During assembly of the centrifugal pump assembly, the impeller is pre-centered on the cylindrical centering at the shaft end.

Eine andere Ausgestaltung sieht vor, dass die Mittelbohrung der Nabe und/oder die Mittelbohrung des Wellenendes als ein Sackloch ausgeführt ist. Damit ist das Gewinde gegen Eindringen von Förderflüssigkeit geschützt.Another embodiment provides that the central bore of the hub and / or the central bore of the shaft end is designed as a blind hole. Thus, the thread is protected against penetration of pumped liquid.

Alternativ ist eine Laufradbefestigung mit einer an einem Ende einer Welle angeordneten Kegelfläche vorgesehen, wobei die Welle wenigstens an ihrem der Laufradnabe zugewandten Ende eine Mittelbohrung mit Innengewinde aufweist, ein als separates Bauteil ausgebildeter Gewindestift in beiden Mittelbohrungen verbindend, drehmoment- und kräfteübertragend angeordnet ist und die Laufradnabe ausschließlich über die Kegelfläche, die sowohl Pass- als auch Anlagefläche bildet, an der Welle ausgerichtet ist. Eine solche Laufradbefestigung bietet aufgrund der geringeren Anzahl von zu bearbeitenden Flächen Vorteile bei der Herstellung.Alternatively, an impeller mounting is provided with a conical surface arranged at one end of a shaft, wherein the shaft has a central bore with internal thread at least at its end facing the impeller hub, connecting a threaded pin designed as a separate component in both central bores, transmitting torque and force and the Impeller hub exclusively on the conical surface, which forms both mating and contact surface, is aligned with the shaft. Such impeller attachment offers advantages in manufacturing due to the reduced number of surfaces to be machined.

Zusätzlich ist vorgesehen, dass der Gewindestift an mindestens einem Ende mit einer Werkzeugaufnahme versehen ist. Dadurch kann dieser beispielsweise auf einfache Art und Weise in seine Montageposition innerhalb der Mittelbohrung gebracht werden.In addition, it is provided that the threaded pin is provided at least one end with a tool holder. As a result, this can be brought, for example, in a simple manner in its mounting position within the central bore.

Ausführungsbeispiele der Erfindung sind in den Zeichnungen dargestellt und werden im Folgenden näher beschrieben. Es zeigen die

Fig. 1
eine Laufradbefestigung nach dem Stand der Technik und die
Fig. 2 & 3
erfindungsgemäße, entkoppelte Laufradbefestigungen.
Embodiments of the invention are illustrated in the drawings and will be described in more detail below. It show the
Fig. 1
an impeller mounting according to the prior art and the
Fig. 2 & 3
according to the invention, decoupled impeller fasteners.

Die Fig. 1 zeigt einen Ausschnitt eines Kreiselpumpenaggregats und einer Laufradbefestigung gemäß dem Stand der Technik. Der Übersichtlichkeit halber sind nur die für eine Laufradbefestigung relevanten Teile dargestellt.The Fig. 1 shows a section of a centrifugal pump assembly and a wheel mounting according to the prior art. For the sake of clarity, only the relevant parts for a wheel mounting are shown.

Gezeigt ist ein Laufrad 1 mit einer Laufradnabe 2 und einer - hier als Sackloch ausgeführten - Mittelbohrung 3 mit Innengewinde 4. Ein Wellenende 5, beispielsweise einer Welle eines Blockmotors, weist einen Gewindestumpf 6 mit Außengewinde auf. Das Wellenende 5 besitzt eine zylindrische Passfläche 7 und eine radiale Anlagefläche 8. Das Laufrad 1 ist mit seiner Laufradnabe 2 auf den Gewindestumpf 6 des Wellenendes 5 aufgeschraubt. Bedingt durch Fertigungstoleranzen weist diese Lösung den Nachteil auf, dass das Gewinde 4 bei der Montage der Laufradnabe 2 auf das Wellenende 5 eine Verkantung der Laufradnabe 2 gegenüber der Welle verursacht. Die Folgen sind unzureichende Rundlaufeigenschaften und/oder Planlaufeigenschaften von Welle und Laufrad 1. Zusätzlich besteht die Gefahr eines Festfressens bei den Gewinden und an der Anlagefläche 8, wodurch eine eventuelle Demontage der Anordnung erschwert ist.Shown is an impeller 1 with an impeller hub 2 and a - executed here as a blind hole - central bore 3 with internal thread 4. A shaft end 5, for example a shaft of a block motor, has a threaded stub 6 with external thread. The shaft end 5 has a cylindrical mating surface 7 and a radial contact surface 8. The impeller 1 is screwed with its impeller hub 2 on the threaded stub 6 of the shaft end 5. Due to manufacturing tolerances, this solution has the disadvantage on that the thread 4 causes during assembly of the impeller hub 2 on the shaft end 5 a tilting of the impeller hub 2 relative to the shaft. The consequences are insufficient concentricity properties and / or run-flat properties of shaft and impeller 1. In addition, there is a risk of seizure in the threads and on the contact surface 8, whereby a possible disassembly of the arrangement is difficult.

Die Fig. 2 zeigt eine erfindungsgemäße Laufradbefestigung. Ein Laufrad 11 weist eine Laufradnabe 12 mit einer Mittelbohrung 13 und einem Innengewinde 14 auf. Weiterhin ist ein Wellenende 15 dargestellt. Das Wellenende 15 weist eine Hohlwelle 16 mit Innengewinde 17 auf. Zur Befestigung des Laufrades 11 am Wellenende 15 dient ein Gewindestift 18, der bei der Montage in die Mittelbohrung 16 eingeschraubt wird. Durch die Werkzeugaufnahme 19, die beispielsweise als Innensechskant, Schlitz oder Schlüsselfläche ausgebildet sein kann, ist er mit üblichen Werkzeugen in die Mittelbohrung 16 einschraubbar. Bei der Montage der Laufradnabe 12 dient eine zylindrische Passfläche 20 zur Vorzentrierung. Diese Pass- oder Zentrierfläche 20 ist derart gestaltet, dass bei der Montage eine gute Vorzentrierung sowie während eines Betriebs eines Aggregates gute Rundlaufeigenschaften erreicht werden. Der Gewindestift 18 kann sich lose bewegen und die Einpassung oder Ausrichtung des Laufrades geschieht lediglich über die dafür vorgesehene Passfläche 20 bzw. die Anlagefläche 21.The Fig. 2 shows an impeller attachment according to the invention. An impeller 11 has an impeller hub 12 with a central bore 13 and an internal thread 14. Furthermore, a shaft end 15 is shown. The shaft end 15 has a hollow shaft 16 with internal thread 17. For attachment of the impeller 11 at the shaft end 15 is a threaded pin 18 which is screwed into the central bore 16 during assembly. By the tool holder 19, which may be formed, for example, as a hexagon socket, slot or key surface, it can be screwed with conventional tools in the central bore 16. When mounting the impeller hub 12 is a cylindrical mating surface 20 for pre-centering. This fitting or centering surface 20 is designed such that good concentricity and during operation of an aggregate good concentricity properties are achieved during assembly. The threaded pin 18 can move loosely and the fit or alignment of the impeller is done only via the designated fitting surface 20 and the contact surface 21st

Durch die Ausbildung des Gewindestifts 18, der in beiden Mittelbohrungen 13, 16 verbindend angeordnet ist, als separates Bauteil wird eine Entkopplung innerhalb der Laufradbefestigung erreicht. Dabei erfüllt der Gewindestift 18 die Funktion einer Drehmoment- bzw. Kraftübertragung. Die Ausrichtung der Laufradnabe erfolgt ausschließlich über die Passfläche 20 und die Anlagefläche 21. Dabei gewährleistet die Passfläche 20 die Rundlaufeigenschaften und die Anlagefläche 21 die Planlaufeigenschaften der Anordnung. Dies führt zu sehr guten Rundlauf- und Planlaufeigenschaften. In Folge des in Laufradnabe- und Wellenende mittig angeordneten Gewindestiftes 18 und den Toleranzen in den Gewindegängen, können beim Anziehen der Verbindung die entkoppelten Gewinde das zu befestigende Laufrad 11 nicht mehr gegenüber der Welle verkanten. Dies ermöglicht auch einen Betrieb eines solchen Laufrades 11 mit sehr hohen Drehzahlen, welches vorteilhaft für drehzahlgeregelte Kreiselpumpenaggregate ist.Due to the design of the threaded pin 18, which is arranged to connect in both central bores 13, 16, as a separate component decoupling is achieved within the impeller mounting. In this case, the threaded pin 18 fulfills the function of a torque or power transmission. The alignment of the impeller hub takes place exclusively via the mating surface 20 and the contact surface 21. In this case, the mating surface 20 ensures the concentricity properties and the contact surface 21 the axial runout properties of the arrangement. This leads to very good concentricity and axial runout properties. As a result of centrally located in Laufradnabe- and shaft end threaded pin 18 and the tolerances in the threads, when tightening the connection, the decoupled thread can no longer tilt the wheel to be fastened 11 relative to the shaft. This also allows operation of such an impeller 11 at very high speeds, which is advantageous for speed-controlled centrifugal pump units.

Die Fig. 3 zeigt eine andere erfindungsgemäße Laufradbefestigung mit Laufrad 31, einer Laufradnabe 32 und einer durch das Laufrad durchgebohrten Mittelbohrung 33. Ein Wellenende 34 weist ebenfalls eine Mittelbohrung 36 auf. Bei dieser Laufradbefestigung ist das Wellenende 34 mit einer Kegelfläche 35 ausgestattet. Die Kegelfläche 35 bildet gleichzeitig Anlage- als auch Passfläche aus und bietet den zusätzlichen Vorteil der einfachen Herstellung.The Fig. 3 shows another invention wheel mounting with impeller 31, an impeller hub 32 and a through-drilled through the impeller central bore 33. A shaft end 34 also has a central bore 36. In this impeller mounting the shaft end 34 is provided with a conical surface 35. The conical surface 35 simultaneously forms investment as well as mating surface and offers the additional advantage of ease of manufacture.

Claims (7)

  1. Rotor mounting at one end of a shaft, in particular a shaft end of a centrifugal pump assembly, a fitting surface and at least one bearing surface being formed at the shaft end, a rotor hub being provided, at least at its end facing the shaft, with a middle bore with internal thread and being fastened to the shaft end by means of a threaded screw connection, the shaft having, at least at its end facing the rotor hub (12), a middle bore (16) with internal thread (17), a headless pin (18) designed as a separate component being arranged connectingly and in a torque and force transmitting manner in the two middle bores (13, 16), characterized in that the rotor hub (12) is oriented on the shaft solely via the fitting (20) and bearing (21) surfaces.
  2. Rotor mounting according to Claim 1, characterized in that a cylindrical centering surface (20) and an axial bearing surface (21) are formed on the shaft end (15).
  3. Rotor mounting according to Claim 2, characterized in that an axial extent of the cylindrical centering surface (20) is equal to or larger than its diameter.
  4. Rotor mounting according to one of Claims 1 to 3, characterized in that, during a mounting of the centrifugal pump assembly, the rotor (11) can be precentered on the shaft end (15) via the cylindrical centering surface (20).
  5. Rotor mounting according to one of Claims 1 to 4, characterized in that the middle bore (13) of the rotor hub (12) and/or the middle bore (16) of the shaft end (15) are/is designed as a blind hole.
  6. Rotor mounting at one end of a shaft, in particular a shaft end of a centrifugal pump assembly, a rotor hub being provided, at least at its end facing the shaft, with a middle bore with internal thread and being fastened to the shaft end by means of a threaded screw connection, the shaft having, at least at its end facing the rotor hub (32), a middle bore (36) with internal thread, a headless pin (18) designed as a separate component being arranged connectingly and in a torque and force transmitting manner in the two middle bores (33, 36), characterized in that a bearing surface is formed as a conical surface at the shaft end and in that the rotor hub (32) is oriented on the shaft solely via the conical surface (35) which forms both a fitting and a bearing surface.
  7. Rotor mounting according to one or more of Claims 1 to 6, characterized in that the headless pin (18) is provided with a toolholding fixture (19) at at least one end.
EP08801957.5A 2007-09-18 2008-09-10 Rotor mounting Not-in-force EP2188534B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007044646A DE102007044646A1 (en) 2007-09-18 2007-09-18 wheelmounting
PCT/EP2008/007385 WO2009036915A1 (en) 2007-09-18 2008-09-10 Rotor mounting

Publications (2)

Publication Number Publication Date
EP2188534A1 EP2188534A1 (en) 2010-05-26
EP2188534B1 true EP2188534B1 (en) 2018-04-18

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP08801957.5A Not-in-force EP2188534B1 (en) 2007-09-18 2008-09-10 Rotor mounting

Country Status (7)

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US (1) US8425189B2 (en)
EP (1) EP2188534B1 (en)
JP (2) JP5548128B2 (en)
DE (1) DE102007044646A1 (en)
DK (1) DK2188534T3 (en)
ES (1) ES2674083T3 (en)
WO (1) WO2009036915A1 (en)

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JP6185778B2 (en) 2017-08-23
ES2674083T3 (en) 2018-06-27
JP2010539381A (en) 2010-12-16
DE102007044646A1 (en) 2009-03-26
US8425189B2 (en) 2013-04-23
JP2013241941A (en) 2013-12-05
EP2188534A1 (en) 2010-05-26
JP5548128B2 (en) 2014-07-16
WO2009036915A1 (en) 2009-03-26
DK2188534T3 (en) 2018-07-30
US20100189567A1 (en) 2010-07-29

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