EP2864651A1 - Device comprising at least one spherical roller bearing, with a pre-loading unit, and a method for applying a pre-load - Google Patents

Device comprising at least one spherical roller bearing, with a pre-loading unit, and a method for applying a pre-load

Info

Publication number
EP2864651A1
EP2864651A1 EP13739950.7A EP13739950A EP2864651A1 EP 2864651 A1 EP2864651 A1 EP 2864651A1 EP 13739950 A EP13739950 A EP 13739950A EP 2864651 A1 EP2864651 A1 EP 2864651A1
Authority
EP
European Patent Office
Prior art keywords
unit
force
bearing
spherical roller
roller bearing
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Withdrawn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
EP13739950.7A
Other languages
German (de)
French (fr)
Inventor
Kjell BOGVAD
Hans-Jürgen Liesegang
Christian Zang
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.)
SKF China Sales Co Ltd
SKF AB
Original Assignee
SKF China Sales Co Ltd
SKF AB
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 SKF China Sales Co Ltd, SKF AB filed Critical SKF China Sales Co Ltd
Publication of EP2864651A1 publication Critical patent/EP2864651A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C23/00—Bearings for exclusively rotary movement adjustable for aligning or positioning
    • F16C23/06—Ball or roller bearings
    • F16C23/08—Ball or roller bearings self-adjusting
    • F16C23/082—Ball or roller bearings self-adjusting by means of at least one substantially spherical surface
    • F16C23/086—Ball or roller bearings self-adjusting by means of at least one substantially spherical surface forming a track for rolling elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C25/00—Bearings for exclusively rotary movement adjustable for wear or play
    • F16C25/06—Ball or roller bearings
    • F16C25/08—Ball or roller bearings self-adjusting
    • F16C25/083—Ball or roller bearings self-adjusting with resilient means acting axially on a race ring to preload the bearing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C23/00—Bearings for exclusively rotary movement adjustable for aligning or positioning
    • F16C23/06—Ball or roller bearings
    • F16C23/08—Ball or roller bearings self-adjusting
    • F16C23/082—Ball or roller bearings self-adjusting by means of at least one substantially spherical surface
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C25/00—Bearings for exclusively rotary movement adjustable for wear or play
    • F16C25/06—Ball or roller bearings
    • F16C25/08—Ball or roller bearings self-adjusting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/58—Raceways; Race rings
    • F16C33/60—Raceways; Race rings divided or split, e.g. comprising two juxtaposed rings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
    • F16C19/34—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load
    • F16C19/38—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2300/00—Application independent of particular apparatuses
    • F16C2300/10—Application independent of particular apparatuses related to size
    • F16C2300/14—Large applications, e.g. bearings having an inner diameter exceeding 500 mm
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2360/00—Engines or pumps
    • F16C2360/31—Wind motors

Definitions

  • the invention relates to a device according to the preamble of claim 1.
  • It is a device with at least one spherical roller bearing is known, which has a split bearing ring.
  • DE 101 26 103 A1 discloses a bearing arrangement, in particular for a machine tool, with at least two roller bearings for supporting a shaft in a housing.
  • the bearings are designed to absorb axial forces and positioned in the same direction in tandem arrangement inserted into the housing.
  • Each rolling bearing is further axially biased by at least one clamping device, wherein the clamping devices of the rolling bearing are mutually coupled for mutual balancing of the rolling bearings acting on axial forces.
  • DE 43 33 196 AI discloses a spindle unit which can compensate for any displacement of the spindle by thermal expansion and which can adjust the bias on the bearings according to the speed of the spindle.
  • EP 1 705 392 B1 discloses a double-row spherical roller bearing in which a gap is provided between the two divided outer rings and a bias is applied to these split outer rings.
  • US 3,934,957 discloses a double-row spherical roller bearing with a split outer ring.
  • a spring is arranged between a housing surface and an outer ring.
  • a pair of spring members are interposed between the split outer rings as dampers.
  • the object of the invention is in particular to provide a generic device which is inexpensive to produce and durable.
  • the object is achieved by the features of claim 1, while advantageous embodiments and modifications of the invention can be taken from the dependent claims.
  • the invention is based on a device having at least one spherical roller bearing, which has at least one split bearing ring.
  • the device has at least one biasing unit, which is provided to exert a force on at least a first part of the bearing ring.
  • a “split bearing ring” is to be understood in particular as a bearing ring which has at least two separate components, which are preferably designed as rings.
  • a “preload unit” is to be understood in particular as a unit which is intended to exert a force on at least a first part of the bearing ring, wherein the unit is preferably provided to exert a force on a first ring of the bearing ring such that it, preferably along an axial direction of the spherical roller bearing, is pressed to a second ring of the bearing ring.
  • a durable design and cost-effective manufacturability of the device can be achieved.
  • it can be erricht that the parts of the split bearing ring are biased against each other, so that a bearing clearance of the spherical roller bearing is prevented in its axial direction.
  • the inhibition of the bearing clearance causes movements of a shaft which is connected to an inner ring of the spherical roller bearing in the axial direction, whereby a low wear of a gear, which is connected to the shaft is achieved.
  • the suppression of the bearing clearance causes the reduction of dynamic loads of the device.
  • a cost-effective construction is achieved in that the shaft which is connected to the inner ring is angularly movably supported by the spherical roller bearing, so that the shaft can be stored inexpensively by a three-point bearing.
  • the kinematic properties of the bearing are hardly negatively influenced by the bias unit.
  • control unit is to be understood as meaning, in particular, a unit which is provided for controlling a procedure, wherein the unit preferably has an electronic computing unit, a memory unit and an operating program stored in the memory unit.
  • the bias unit is formed as a hydro-elastic bias unit.
  • a "hydro-elastic" prestressing unit is to be understood in particular to mean a projection unit which is intended to transmit the force by means of an elastic element which can be filled with a liquid, such as in particular a hose exercise. This allows a simple and effective design can be achieved.
  • Fig. 2 shows a schematic partial section through a device according to the invention.
  • FIG. 1 shows a schematic view of a wind power plant which has a device according to the invention (FIG. 2).
  • the device supports a shaft 34 of the wind turbine, which is attached to a rotor of the wind turbine, rotatable.
  • the device comprises a spherical roller bearing 10, which has an inner ring 32 and a split bearing ring 12 which is formed as an outer ring.
  • the shaft 34 is connected to the inner ring 32.
  • the split outer ring has a first part 14 and a second part 16, which are separately formed components.
  • a first row 36 of rolling elements of the spherical roller bearing 10 contacts the inner ring 32 and the first part 14.
  • a second row 38 of rolling elements of the spherical roller bearing 10 contacts the inner ring 32 and the second part 16.
  • a support unit 40 of the wind turbine receives the weight of the device and the rotor and transmits it to the ground.
  • the device has a holding unit with individual components 42 to 50, which fix the inner ring 32 relative to the carrier unit 40. Furthermore, the holding unit acts to fix the part 16 relative to the carrier unit.
  • the holding unit is fixed relative to the carrier unit 40.
  • the part 14 is movably mounted relative to the inner ring 32.
  • a hydro-elastic biasing unit 18 exerts a force on the member 14, which is directed parallel to an axial direction 26 of the spherical roller bearing.
  • the biasing unit has a hose 24, a liquid 28 and a control unit 20. The hose abuts the first part 14 and the components 44, 46 and is arranged between the first part 14 and the component 44.
  • a subset of the liquid 28 is disposed in the tube. Another subset of the liquid 28 is arranged in the control unit 20.
  • the control unit 20 has a memory unit in which a target value of the pressure of the subset of the liquid 28, which is arranged in the hose, is stored. The control unit regulates the pressure of the subset of the liquid 28, which in the
  • Hose is arranged on the set point. As a result, the force which the hose exerts on the part 14 is set to a constant value.
  • control unit ensures that a further liquid quantity of the liquid 28 is introduced into the tube.
  • control unit has a pump (not shown). If the pressure of the subset in the tube increases due to external influences, the control unit ensures that a liquid amount of the liquid 28 is carried out of the tube.
  • the biasing unit and the control unit is designed such that, in a sudden axial load of the part 14, the bearing shows a stiff behavior, the subset of the liquid 28, which is in the hose, but can change, so that a damping of Load occurs.
  • control unit can be achieved that, despite temperature changes that have an expansion or shrinkage of the shaft result, the force remains constant, so that a distortion of the bearing is prevented. Except for the force transmitted to the part 14 by the biasing unit, the part 14 is free of axial load.
  • the device can have a control unit which can change the pressure of the subset of the fluid which is arranged in the hose.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Support Of The Bearing (AREA)
  • Mounting Of Bearings Or Others (AREA)
  • Rolling Contact Bearings (AREA)
  • Motor Or Generator Frames (AREA)

Abstract

The invention relates to a device comprising at least one spherical roller bearing, and a method. The invention relates to a device comprising at least one spherical roller bearing (10) which has at least one split bearing ring (12). According to the invention, the device comprises at least one hydro-elastic pre-loading unit (18) which is provided to exert a force, by means of a control unit, onto at least one first part (14) of said bearing ring (12).

Description

B e s c h r e i b u n g  Description
VORRICHTUNG MIT WENIGSTENS EINEM PENDELROLLENLAGER MIT VORSPANNEINHEIT UND VERFAHREN ZUM AUFBRINGEN EINER VORSPANNUNG DEVICE WITH AT LEAST ONE PENDULUM ROLL BEARING WITH PRELOAD UNIT AND METHOD FOR APPLYING A PRELOAD
Die Erfindung geht aus von einer Vorrichtung nach dem Oberbegriff des Anspruchs 1. The invention relates to a device according to the preamble of claim 1.
Es ist eine Vorrichtung mit wenigstens einem Pendelrollenlager bekannt, welches einen geteilten Lagerring aufweist. It is a device with at least one spherical roller bearing is known, which has a split bearing ring.
Ferner ist eine Vorrichtung mit zwei Kegelrollenlagern bekannt, welche eine Welle lagern. Furthermore, a device with two tapered roller bearings is known which support a shaft.
Beispielsweise ist aus der DE 101 26 103 A 1 eine Lageranordnung, insbesondere für eine Werkzeugmaschine, mit mindestens zwei Wälzlagern zum Lagern einer Welle in einem Gehäuse bekannt. Die Wälzlager sind zur Aufnahme von Axialkräften ausgelegt und gleichsinnig positioniert in Tandemanordnung in das Gehäuse eingesetzt. Jedes Wälzlager ist ferner durch mindestens eine Spanneinrichtung axial vorspannbar, wobei die Spanneinrichtungen der Wälzlager zum gegenseitigen Ausgleichen der an den Wälzlagern angreifenden Axialkräfte miteinander gekoppelt sind. Die DE 43 33 196 AI offenbart eine Spindeleinheit, welche jede Verlagerung der Spindel durch thermische Ausdehnung ausgleichen kann und welche die Vorspannung auf die Lager entsprechend der Drehzahl der Spindel einstellen kann. For example, DE 101 26 103 A1 discloses a bearing arrangement, in particular for a machine tool, with at least two roller bearings for supporting a shaft in a housing. The bearings are designed to absorb axial forces and positioned in the same direction in tandem arrangement inserted into the housing. Each rolling bearing is further axially biased by at least one clamping device, wherein the clamping devices of the rolling bearing are mutually coupled for mutual balancing of the rolling bearings acting on axial forces. DE 43 33 196 AI discloses a spindle unit which can compensate for any displacement of the spindle by thermal expansion and which can adjust the bias on the bearings according to the speed of the spindle.
Beispielsweise offenbart die EP 1 705 392 Bl ein zweireihiges Pendelrollenlager bei dem zwischen den zwei geteilten Außenringen ein Spalt vorgesehen ist und auf diese geteilten Außenringe eine Vorspannung aufgebracht wird. For example, EP 1 705 392 B1 discloses a double-row spherical roller bearing in which a gap is provided between the two divided outer rings and a bias is applied to these split outer rings.
Des Weiteren offenbart die US 3,934,957 ein zweireihiges Pendelrollenlager mit einem geteilten Außenring. Eine Feder ist zwischen einer Gehäusefläche und einem Außenring angeordnet. Ein Paar von Federelementen ist zwischen den geteilten Außenringen angeordnet als Dämpfer. Furthermore, US 3,934,957 discloses a double-row spherical roller bearing with a split outer ring. A spring is arranged between a housing surface and an outer ring. A pair of spring members are interposed between the split outer rings as dampers.
Die Aufgabe der Erfindung besteht insbesondere darin, eine gattungsgemäße Vorrichtung bereitzustellen, welche kostengünstig herstellbar und langlebig ist. Die Aufgabe wird erfindungsgemäß durch die Merkmale des Patentanspruchs 1 gelöst, während vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung den Unteransprüchen entnommen werden können. The object of the invention is in particular to provide a generic device which is inexpensive to produce and durable. The object is achieved by the features of claim 1, while advantageous embodiments and modifications of the invention can be taken from the dependent claims.
Die Erfindung geht aus von einer Vorrichtung mit wenigstens einem Pendelrollenlager, welches wenigstens einen geteilten Lagerring aufweist. The invention is based on a device having at least one spherical roller bearing, which has at least one split bearing ring.
Es wird vorgeschlagen, dass die Vorrichtung zumindest eine Vorspannungseinheit aufweist, welche dazu vorgesehen ist, eine Kraft auf wenigstens einen ersten Teil des Lagerrings auszuüben. Unter einem "geteilten Lagerring" soll insbesondere ein Lagerring verstanden werden, welcher wenigstens zwei separate Bauteile, welche vorzugsweise als Ringe ausgebildet sind, aufweist. Unter einer "Vorspannungseinheit" soll insbesondere eine Einheit verstanden werden, welche dazu vorgesehen ist, eine Kraft auf wenigstens einen ersten Teil des Lagerrings auszuüben, wobei die Einheit vorzugsweise dazu vorgesehen ist, eine Kraft auf einen ersten Ring des Lagerrings derart auszuüben, dass dieser, vorzugsweise entlang einer axialen Richtung des Pendelrollenlagers, auf einen zweiten Ring des Lagerrings zu gedrückt wird. Unter "vorgesehen" soll insbesondere speziell ausgelegt und/oder speziell ausgestattet und/oder speziell programmiert verstanden werden. Mit einer erfindungsgemäßen Ausgestaltung kann eine langlebige Ausbildung und kostengünstige Herstellbarkeit der Vorrichtung erreicht werden. Insbesondere kann erricht werden, dass die Teile des geteilten Lagerrings gegeneinander vorgespannt sind, so dass ein Lagerspiel des Pendelrollenlagers in seine axiale Richtung unterbunden wird. Insbesondere bewirkt das Unterbinden des Lagerspiels Bewegungen einer Welle, die mit einem Innenring des Pendelrollenlagers verbunden ist, in die axiale Richtung, wodurch ein geringer Verschleiß eines Getriebes, das mit der Welle verbunden ist, erreicht wird. Im Besonderen bewirkt das Unterbinden des Lagerspiels das Reduzieren von dynamischen Belastungen der Vorrichtung. Insbesondere wird eine kostengünstige Bauweise dadurch erreicht, dass die Welle, die mit dem Innenring verbunden ist, durch das Pendelrollenlager winkelbeweglich gelagert ist, so dass die Welle kostengünstig durch eine Dreipunktlagerung gelagert werden kann. Insbesondere werden die kinematischen Eigenschaften des Lagers kaum negativ durch die Vorspannungseinheit beeinflusst. It is proposed that the device has at least one biasing unit, which is provided to exert a force on at least a first part of the bearing ring. A "split bearing ring" is to be understood in particular as a bearing ring which has at least two separate components, which are preferably designed as rings. A "preload unit" is to be understood in particular as a unit which is intended to exert a force on at least a first part of the bearing ring, wherein the unit is preferably provided to exert a force on a first ring of the bearing ring such that it, preferably along an axial direction of the spherical roller bearing, is pressed to a second ring of the bearing ring. By "intended" is intended to be understood in particular specifically designed and / or specially equipped and / or specially programmed. With an embodiment according to the invention, a durable design and cost-effective manufacturability of the device can be achieved. In particular, it can be erricht that the parts of the split bearing ring are biased against each other, so that a bearing clearance of the spherical roller bearing is prevented in its axial direction. In particular, the inhibition of the bearing clearance causes movements of a shaft which is connected to an inner ring of the spherical roller bearing in the axial direction, whereby a low wear of a gear, which is connected to the shaft is achieved. In particular, the suppression of the bearing clearance causes the reduction of dynamic loads of the device. In particular, a cost-effective construction is achieved in that the shaft which is connected to the inner ring is angularly movably supported by the spherical roller bearing, so that the shaft can be stored inexpensively by a three-point bearing. In particular, the kinematic properties of the bearing are hardly negatively influenced by the bias unit.
Ferner wird vorgeschlagen, dass die Vorrichtung wenigstens eine Steuereinheit aufweist, welche dazu vorgesehen ist, die Kraft zu verändern. Unter einer "Steuereinheit " soll insbesondere eine Einheit verstanden werden, welche zu einer Steuerung eines Vorgangs vorgesehen ist, wobei die Einheit vorzugsweise eine elektronische Recheneinheit, eine Speichereinheit und ein in der Speichereinheit gespeichertes Betriebsprogramm aufweist. Hierdurch kann eine effektive Einstellung der Kraft erreicht werden. It is also proposed that the device has at least one control unit which is provided to change the force. A "control unit" is to be understood as meaning, in particular, a unit which is provided for controlling a procedure, wherein the unit preferably has an electronic computing unit, a memory unit and an operating program stored in the memory unit. As a result, an effective adjustment of the force can be achieved.
Vorzugsweise ist die Vorspannungseinheit als hydro-elastische Vorspannungseinheit ausgebildet. Unter einer "hydro-elastischen" Vorspannungseinheit soll insbesondere eine Vorsprungseinheit verstanden werden, welche dazu vorgesehen ist, die Kraft mittels eines elastischen und mit einer Flüssigkeit befüllbaren Elements, wie insbesondere einem Schlauch, auszuüben. Dadurch kann eine einfache und wirkungsvolle Bauweise erzielt werden. Preferably, the bias unit is formed as a hydro-elastic bias unit. A "hydro-elastic" prestressing unit is to be understood in particular to mean a projection unit which is intended to transmit the force by means of an elastic element which can be filled with a liquid, such as in particular a hose exercise. This allows a simple and effective design can be achieved.
Weitere Vorteile ergeben sich aus der folgenden Zeichnungsbeschreibung. In den Zeichnungen ist ein Ausführungsbeispiel der Erfindung dargestellt. Die Zeichnungen, die Beschreibung und die Ansprüche enthalten zahlreiche Merkmale in Kombination. Der Fachmann wird die Merkmale zweckmäßigerweise auch einzeln betrachten und zu sinnvollen weiteren Kombinationen zusammenfassen. Further advantages emerge from the following description of the drawing. In the drawings, an embodiment of the invention is shown. The drawings, the description and the claims contain numerous features in combination. The person skilled in the art will expediently also consider the features individually and combine them into meaningful further combinations.
Fig. 1 zeigt eine schematische Ansicht einer Windkraftanlage, 1 shows a schematic view of a wind turbine,
Fig. 2 zeigt einen schematischen Teilschnitt durch eine erfindungsgemäße Vorrichtung. Fig. 2 shows a schematic partial section through a device according to the invention.
Figur 1 zeigt eine schematische Ansicht einer Windkraftanlage, welche eine erfindungsgemäße Vorrichtung (Fig. 2) aufweist. Die Vorrichtung lagert eine Welle 34 der Windkraftanlage, die mit an einem Rotor der Windkraftanlage befestigt ist, drehbar. Hierzu umfasst die Vorrichtung ein Pendelrollenlager 10, welches einen Innenring 32 und einen geteilten Lagerring 12, der als Außenring ausgebildet ist, aufweist. Die Welle 34 ist mit dem Innenring 32 verbunden. Der geteilte Außenring weist einen ersten Teil 14 und einen zweiten Teil 16 auf, welches getrennt voneinander ausgebildete Bauteile sind. Eine erste Reihe 36 von Wälzkörpern des Pendelrollenlagers 10 berührt den Innenring 32 und den ersten Teil 14. Eine zweite Reihe 38 von Wälzkörpern des Pendelrollenlagers 10 berührt den Innenring 32 und den zweiten Teil 16. FIG. 1 shows a schematic view of a wind power plant which has a device according to the invention (FIG. 2). The device supports a shaft 34 of the wind turbine, which is attached to a rotor of the wind turbine, rotatable. For this purpose, the device comprises a spherical roller bearing 10, which has an inner ring 32 and a split bearing ring 12 which is formed as an outer ring. The shaft 34 is connected to the inner ring 32. The split outer ring has a first part 14 and a second part 16, which are separately formed components. A first row 36 of rolling elements of the spherical roller bearing 10 contacts the inner ring 32 and the first part 14. A second row 38 of rolling elements of the spherical roller bearing 10 contacts the inner ring 32 and the second part 16.
Eine Trägereinheit 40 der Windkraftanlage nimmt die Gewichtskraft der Vorrichtung und des Rotors auf und überträgt sie auf den Erdboden. Die Vorrichtung weist eine Halteeinheit mit einzelnen Bauteilen 42 bis 50 auf, welche den Innenring 32 relativ zu der Trägereinheit 40 fixieren. Ferner wirkt die Halteeinheit daran mit, den Teil 16 relativ zu der Trägereinheit zu fixieren. Die Halteeinheit ist relativ zu der Trägereinheit 40 fixiert. Der Teil 14 ist relativ zu dem Innenring 32 beweglich gelagert. Eine hydro- elastische Vorspannungseinheit 18 übt eine Kraft auf den Teil 14 aus, welche parallel zu einer axialen Richtung 26 des Pendelrollenlagers gerichtet ist. Die Vorspannungseinheit weist einen Schlauch 24, eine Flüssigkeit 28 und eine Regelungseinheit 20 auf. Der Schlauch liegt an dem ersten Teil 14 und an den Bauteilen 44,46 an und ist zwischen dem ersten Teil 14 und dem Bauteil 44 angeordnet. Eine Teilmenge der Flüssigkeit 28 ist in dem Schlauch angeordnet. Eine andere Teilmenge der Flüssigkeit 28 ist in der Regelungseinheit 20 angeordnet. Die Regelungseinheit 20 weist eine Speichereinheit auf, in welcher ein Sollwert des Drucks der Teilmenge der Flüssigkeit 28, die in dem Schlauch angeordnet ist, gespeichert ist. Die Regelungseinheit regelt den Druck der Teilmenge der Flüssigkeit 28, die in dem A support unit 40 of the wind turbine receives the weight of the device and the rotor and transmits it to the ground. The device has a holding unit with individual components 42 to 50, which fix the inner ring 32 relative to the carrier unit 40. Furthermore, the holding unit acts to fix the part 16 relative to the carrier unit. The holding unit is fixed relative to the carrier unit 40. The part 14 is movably mounted relative to the inner ring 32. A hydro-elastic biasing unit 18 exerts a force on the member 14, which is directed parallel to an axial direction 26 of the spherical roller bearing. The biasing unit has a hose 24, a liquid 28 and a control unit 20. The hose abuts the first part 14 and the components 44, 46 and is arranged between the first part 14 and the component 44. A subset of the liquid 28 is disposed in the tube. Another subset of the liquid 28 is arranged in the control unit 20. The control unit 20 has a memory unit in which a target value of the pressure of the subset of the liquid 28, which is arranged in the hose, is stored. The control unit regulates the pressure of the subset of the liquid 28, which in the
Schlauch angeordnet ist, auf dem Sollwert. Dadurch ist die Kraft, die der Schlauch auf den Teil 14 ausübt, auf einen konstanten Wert eingestellt. Hose is arranged on the set point. As a result, the force which the hose exerts on the part 14 is set to a constant value.
Falls der Druck der Teilmenge im Schlauch durch äußere Einflüsse abfällt, sorgt die Regelungseinheit dafür, dass eine weitere Flüssigkeitsmenge der Flüssigkeit 28 in den Schlauch eingeführt wird. Hierzu weist Regelungseinheit eine Pumpe (nicht dargestellt) auf. Falls der Druck der Teilmenge im Schlauch durch äußere Einflüsse ansteigt, sorgt die Regelungseinheit dafür, dass eine Flüssigkeitsmenge der Flüssigkeit 28 aus dem Schlauch ausgeführt wird. If the pressure of the subset in the tube falls due to external influences, the control unit ensures that a further liquid quantity of the liquid 28 is introduced into the tube. For this purpose, control unit has a pump (not shown). If the pressure of the subset in the tube increases due to external influences, the control unit ensures that a liquid amount of the liquid 28 is carried out of the tube.
Ferner ist die Vorspannungseinheit und die Regelungseinheit derart ausgebildet, dass bei einer plötzlichen axialen Belastung des Teils 14 das Lager zwar ein steifes Verhalten zeigt, die Teilmenge der Flüssigkeit 28, die sich in dem Schlauch befindet, sich aber ändern kann, so dass eine Dämpfung der Belastung erfolgt. Furthermore, the biasing unit and the control unit is designed such that, in a sudden axial load of the part 14, the bearing shows a stiff behavior, the subset of the liquid 28, which is in the hose, but can change, so that a damping of Load occurs.
Durch die Regelungseinheit kann erreicht werden, dass trotz Temperaturveränderungen, die ein Ausdehnen oder Schrumpfen der Welle zur Folge haben, die Kraft konstant bleibt, so dass ein Verspannen des Lagers verhindert wird. Bis auf die durch die Vorspannungseinheit auf den Teil 14 übertragene Kraft ist der Teil 14 axiallastfrei. By the control unit can be achieved that, despite temperature changes that have an expansion or shrinkage of the shaft result, the force remains constant, so that a distortion of the bearing is prevented. Except for the force transmitted to the part 14 by the biasing unit, the part 14 is free of axial load.
Alternativ zu der Regelungseinheit kann die Vorrichtung eine Steuereinheit aufwei- sen, welche den Druck der Teilmenge der Flüssigkeit, die im Schlauch angeordnet ist, verändern kann. As an alternative to the control unit, the device can have a control unit which can change the pressure of the subset of the fluid which is arranged in the hose.
Bezugszeichenliste LIST OF REFERENCE NUMBERS
10 Pendelrollenlager10 spherical roller bearings
12 Lagerring 12 bearing ring
14 Teil  14 part
16 Teil  16 part
18 Vorspannungseinheit 18 bias unit
20 Regelungseinheit20 control unit
24 Schlauch 24 hose
26 Richtung  26 direction
28 Flüssigkeit  28 liquid
30 Rotor  30 rotor
32 Innenring  32 inner ring
34 Welle  34 wave
36 Reihe  36 series
38 Reihe  38 series
40 Trägereinheit 40 carrier unit
42 Bauteil 42 component
44 Bauteil  44 component
46 Bauteil  46 component
48 Bauteil  48 component
50 Bauteil  50 component

Claims

P a t e n t a n s p r ü c h e Patent claims
1. Vorrichtung mit wenigstens einem Pendelrollenlager (10), welches wenigstens einen geteilten Lagerring (12) aufweist, 1. Device having at least one spherical roller bearing (10), which has at least one split bearing ring (12),
gekennzeichnet durch  marked by
zumindest eine Vorspannungseinheit (18), welche dazu vorgesehen ist, eine Kraft auf wenigstens einen ersten Teil (14) des Lagerrings (12) auszuüben, wobei die Vorrichtung wenigstens eine Steuereinheit aufweist, welche dazu vorgesehen ist, die Kraft zu verändern, wobei die Vorspannungseinheit (18) als hydro-elastische Vorspannungseinheit (18) ausgebildet ist.  at least one biasing unit (18) adapted to exert a force on at least a first part (14) of the bearing ring (12), the device comprising at least one control unit intended to vary the force, the biasing unit (18) is designed as a hydro-elastic bias unit (18).
2. Vorrichtung nach Anspruch 1, wobei der Lagerring (12) als Außenring ausgebildet ist. 2. Apparatus according to claim 1, wherein the bearing ring (12) is designed as an outer ring.
3. Vorrichtung nach einem der vorherigen Ansprüche, wobei die Vorrichtung wenigstens eine Regelungseinheit (20) aufweist, welche dazu vorgesehen ist, die Kraft auf einen vorbestimmten Wert zu regeln. 3. Device according to one of the preceding claims, wherein the device comprises at least one control unit (20) which is intended to regulate the force to a predetermined value.
4. Vorrichtung nach einem der vorherigen Ansprüche , wobei die hydro- elastische Vorspannungseinheit (18) einen Schlauch (24) aufweist, welcher an dem ersten Teil (14) des Lagerrings (12) anliegt und in welchen zur Beeinflussung der Kraft Flüssigkeit ein- und auspumpbar ist. 4. Device according to one of the preceding claims, wherein the hydro-elastic prestressing unit (18) has a hose (24) which rests against the first part (14) of the bearing ring (12) and in which for influencing the force of liquid on and is pumpable.
5. Vorrichtung nach Anspruch 4, wobei die Vorrichtung eine Regelungseinheit (20) aufweist, die dazu vorgesehen ist, den Druck einer Flüssigkeit (28) der Vorrichtung, welche in dem Schlauch (24) angeordnet ist, auf einen vorbestimmten Wert zu regeln. 5. Apparatus according to claim 4, wherein the apparatus comprises a control unit (20) arranged to regulate the pressure of a liquid (28) of the device, which is arranged in the hose (24) to a predetermined value.
6. Vorrichtung nach einem der vorherigen Ansprüche, wobei die Kraft parallel zu der axialen Richtung (26) des Pendelrollenlagers (10) gerichtet ist. 6. Device according to one of the preceding claims, wherein the force is directed parallel to the axial direction (26) of the spherical roller bearing (10).
7. Windkraftanlage mit einer Vorrichtung nach einem der vorherigen Ansprüche. 7. Wind turbine with a device according to one of the preceding claims.
8. Verfahren, bei welchem zum Vorspannen eine Kraft auf wenigstens ein Teil eines Lagerrings (12) ausgeübt wird, mit einer Vorrichtung nach einem der Ansprüche 1 bis 7. 8. A method in which for biasing a force is applied to at least a part of a bearing ring (12), with a device according to one of claims 1 to 7.
EP13739950.7A 2012-06-20 2013-06-19 Device comprising at least one spherical roller bearing, with a pre-loading unit, and a method for applying a pre-load Withdrawn EP2864651A1 (en)

Applications Claiming Priority (2)

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DE102012210419A DE102012210419A1 (en) 2012-06-20 2012-06-20 Device with at least one spherical roller bearing and method
PCT/EP2013/062691 WO2013189962A1 (en) 2012-06-20 2013-06-19 Device comprising at least one spherical roller bearing, with a pre-loading unit, and a method for applying a pre-load

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EP2864651A1 true EP2864651A1 (en) 2015-04-29

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US (1) US20150233420A1 (en)
EP (1) EP2864651A1 (en)
JP (1) JP2015522770A (en)
CN (1) CN104685237A (en)
DE (1) DE102012210419A1 (en)
WO (1) WO2013189962A1 (en)

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JP2015522770A (en) 2015-08-06
CN104685237A (en) 2015-06-03
DE102012210419A1 (en) 2013-12-24
US20150233420A1 (en) 2015-08-20
WO2013189962A1 (en) 2013-12-27

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