EP1617046B1 - Wellen- und Lageranordnung - Google Patents

Wellen- und Lageranordnung Download PDF

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Publication number
EP1617046B1
EP1617046B1 EP05105982A EP05105982A EP1617046B1 EP 1617046 B1 EP1617046 B1 EP 1617046B1 EP 05105982 A EP05105982 A EP 05105982A EP 05105982 A EP05105982 A EP 05105982A EP 1617046 B1 EP1617046 B1 EP 1617046B1
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EP
European Patent Office
Prior art keywords
ring
shaft
bearing
whereof
assembly according
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.)
Active
Application number
EP05105982A
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English (en)
French (fr)
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EP1617046A1 (de
Inventor
Jean-Philippe Maffre
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.)
Safran Aircraft Engines SAS
Original Assignee
SNECMA SAS
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Filing date
Publication date
Application filed by SNECMA SAS filed Critical SNECMA SAS
Publication of EP1617046A1 publication Critical patent/EP1617046A1/de
Application granted granted Critical
Publication of EP1617046B1 publication Critical patent/EP1617046B1/de
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
    • F01D25/16—Arrangement of bearings; Supporting or mounting bearings in casings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2230/00—Manufacture
    • F05D2230/60—Assembly methods
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/70—Interfitted members
    • Y10T403/7026—Longitudinally splined or fluted rod

Definitions

  • the present invention relates to an assembly comprising a shaft or a rotating shaft portion about its axis and a rolling bearing by which it is supported.
  • the present invention applies in particular to the mounting of a bearing for a turbine shaft a gas turbine engine.
  • FIG. 1 shows a partial view of a gas turbine engine 1.
  • the high pressure turbine rotor 2 is immediately downstream of the combustion chamber 3 and is rotated by the action of the gases which are derived from the blades 4 mounted on the disk 5 of the rotor 2.
  • the turbine disc 5 is integral with a pin 6, disposed downstream relative to the direction of the gas flow.
  • a bearing by which the rotating assembly is supported At the end of the pin 6 is mounted a bearing by which the rotating assembly is supported.
  • the rotor 2 is integral upstream of a drum 7 connected to the high pressure compressor, not shown, itself rotated by an upstream bearing.
  • This rotating assembly forming the high pressure body of the engine is supported by means of these two bearings either by the fixed structure of the engine in the case of a single-body engine or by another rotating assembly in the case of a double or triple body motor for independent low pressure or intermediate pressure stages.
  • the inner ring is secured to the shaft or journal by hooping. By this operation the ring is mounted with clamping on the shaft or trunnion.
  • the coupling can thus both withstand the rotational torques to which the ring is subjected during engine operation as axial forces.
  • Such an assembly is disclosed in the document FR 2 629 537.
  • the applicant has therefore set as a first objective a method of assembling a rolling bearing ring, the shaft on which it is mounted to overcome these disadvantages by providing the same mechanical characteristics as those proposed by a nut .
  • the applicant has also set as another objective the realization of a method of assembling a rolling bearing ring on a shaft, which is both easy to assemble and disassemble.
  • the invention solves this problem with an assembly according to claim 1 and comprising a rotary shaft and a rolling bearing, the bearing comprising a ring integral with the shaft and forming a raceway for the bearing members of the bearing, characterized by the that the ring is immobilized in rotation on the shaft by a coupling consisting of a plurality of teeth on the shaft cooperating with tenons integral with the ring, the tenons being housed between said teeth, and in the axial direction by a transverse rod in the form of a ring portion.
  • shaft designates a shaft, a shaft portion, a trunnion or more generally any part on which a rolling bearing is mounted.
  • the nut in the case of a bearing assembly at the end of the trunnion on the side of its free end, the nut, because of the assembly constraints, must be placed in abutment against the ring on its edge near the end free of the trunnion, can be arranged a clutch coupling on the opposite side relative to the free end.
  • the corresponding portion of the trunnion can thus be shortened.
  • the axial retaining means can be associated with the clutch coupling.
  • the coupling consists of a plurality of teeth, respectively tenons, spaced apart from each other along the circumference of the shaft.
  • the number of teeth and associated tenons, as well as the size thereof, are determined by the circumferential loads that the coupling is called to support during the operation of the engine.
  • it advantageously has the elements symmetrically around the axis of the shaft.
  • the rolling bearing can be any, ball, roller or other.
  • a bearing comprises at least two concentric rings: an inner ring and an outer ring, between which are arranged a plurality of rolling members, for example rollers, held apart from each other by a cage.
  • the rings each define a rolling track for the rolling members
  • the ring is made of an elastic material. It takes a first form in radial extension and where it constitutes said axial retention between the shaft and the ring, and a radially retracted form where it allows the axial displacement of the ring relative to the shaft.
  • the rod in the retaining position, is arranged to be in contact with both a tooth and at least one tenon.
  • the shaft comprises a cylindrical portion forming an outer radial abutment of the free end of the tenon or tenons.
  • FIG. 2 shows a pin 16 or a turbine shaft connected to the turbine rotor, not shown, according to the invention.
  • Figure 6 partially shows a representation of the arrangement of Figure 2 perspective view.
  • the trunnion comprises a flange with bores 161 by which is bolted to 161 the turbine rotor.
  • the trunnion also comprises a straight cylinder 162 for mounting an inner rolling bearing ring 18.
  • the ring 18 comprises an inner cylindrical member 181 on the cylindrical portion 162 of the trunnion.
  • the track 182 comprises an outer bearing for the rolling members, here rollers, not shown, as well as the rest of the bearing.
  • the ring is extended, along the common axis of the ring and the shaft, by tenons 17.
  • These tenons 17 are clearly visible in Figure 3 which is a partial perspective view of the ring 18
  • Each tenon has an internal groove 171, facing the axis of the ring and transversely thereto. The tenons are distributed here over the entire ring 17 with a determined spacing corresponding to the width of the teeth described below.
  • the ring 18 is abutted by the surface 172, oriented transversely to the axis, against an axial abutment 167 formed on the cylindrical portion 162.
  • the surface 172 is clearly shown in Figure 4 showing the end of the trunnion in a view in perspective, in isolation.
  • Radial teeth 164 are disposed at the periphery thereof, being spaced apart from each other with a spacing corresponding to the width of the tenons 17.
  • the tenons 17 are placed between the teeth 164, the ring being supported by the face 172 against the face 167 forming a stop.
  • the ring 18 and the trunnion 16 thus form a dog clutch coupling. By this coupling the ring is firmly immobilized in rotation, even if the tightening of the ring on the shaft is weakened.
  • the teeth are aligned transversely to the axis of the shaft and provide a transverse groove 166, radially open, the opposite side to that of the faces 165.
  • the groove 166 is screwed to grooves 171 formed on the tenons 17.
  • a ring 19, transverse to the axis is housed in the continuity of the grooves 171, and forms said axial retaining means. Indeed, being housed in all the grooves 171, its height is sufficient to engage against all the teeth 164. As seen in Figure 2, it prevents any withdrawal movement of the ring towards the right on the figure.
  • Figure 7 shows an enlarged detail of Figure 6, the rod 19 in the locking position.
  • This ring has a rectangular section here. It extends on the circumference. It forms a ring with a missing portion. It is elastic, preferably metal, and can be retracted by appropriate means to be housed in the groove 166 of the pin. When it is in this last position, it does not interfere with the axial movement of the ring. The depth of the groove 166 is sufficient to accommodate the rod and retract completely relative to the tenons of the ring.
  • the free portion of the tenons 17 is engaged in a downstream axial groove formed between the cylindrical portion 163 and the surface of the cylindrical trunnion portion.
  • the pins 17 are in external radial support against the surface of this cylindrical portion 163. Since the assembly is capable of rotating at very high speeds of rotation, the radial support provided by the element 163 reduces the deformations and stresses due to centrifugal forces exerted on the tenons. This considerably increases the durability of the parts.
  • the rod When mounting the ring 18 on the trunnion 16, the rod is first fitted by sliding it behind the teeth 164, as shown in FIG. 5; it is elastic enough to be deformed. Then, by means of a suitable tool the ring is forced to retract into the groove 166. While holding the ring in this position, the ring is slid along the cylindrical portion 162, until the faces 172 of the ring abut against the surface 167. The engagement of the tenons between the teeth forming a dog clutch coupling. Then relaxes the ring which relaxes and is housed in the grooves 171, axially locking the ring 18.
  • annular notch 20 through which one can extract the ring by means of a suitable tool. It is also observed that it is easy to introduce a tool between the teeth 164 to retract the rod 19.
  • the invention has been described as a bearing ring of a rolling bearing.
  • the invention applies equally well, mutatis mutandis, to the mounting of the outer ring of a rolling bearing on the inner surface of a shaft or a housing structure.
  • the claw coupling can be made in the teeth and hold them on the ring and the second secured to the shaft.
  • the invention is not limited to mounting a ring on a turbine shaft, it is more general scope.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rolling Contact Bearings (AREA)
  • Mounting Of Bearings Or Others (AREA)

Claims (6)

  1. Zusammenbau, welcher aufweist:
    eine drehbare Welle und ein die Welle tragendes Rollen-Lager, wobei das Lager einen mit der Welle (16) verbundenen, und für das Lager eine Roll-Bahn bildenden Laufring (18) aufweist, wobei der Laufring (18) bezüglich (einer) Drehung auf der Welle (16) mittels einer Kupplung immobilisiert ist, welche aus einer Mehrzahl von Zähnen (164) auf der Welle (16) gebildet wird, welche mit mit dem Laufring (18) verbundenen Zapfen (17) zusammenwirken, wobei die Zapfen (17) zwischen den Zähnen (164) und in Axial-Richtung von einem Transversalring (19) aufgenommen sind, dadurch gekennzeichnet, dass der Transversalring (19) in Form eines Ring-Abschnitts vorliegt.
  2. Zusammenbau gemäß Anspruch 1, wobei der Transversalring aus einem elastischen Material realisiert ist, und bei radialer Ausdehnung eine erste Form annimmt, in welcher er eine axiale Rückhaltevorrichtung bildet, und eine radial zurückgezogene Form annimmt, in welcher er das axiale Verschieben des Laufrings (18) bezüglich der Welle ermöglicht.
  3. Zusammenbau gemäß einem der Ansprüche 1 und 2, wobei die Welle (16) einen zylinderförmigen Abschnitt (163) aufweist, welcher einen radialen äußeren Anschlag des freien Endes des oder der Zapfen (17) bildet.
  4. Zusammenbau gemäß einem der Ansprüche 1 bis 3, wobei der Laufring (18) der innere Ring des Rollen-Lagers ist, und auf der Außenfläche der Welle angebracht ist.
  5. Zusammenbau gemäß einem der vorhergehenden Ansprüche, wobei die Welle (16) eine Gasturbinen-Triebwerk-Welle ist.
  6. Zusammenbau gemäß dem vorhergehenden Anspruch, wobei die Welle ein Turbinen-Drehzapfen in einem zumindest zweiteiligen Triebwerk ist.
EP05105982A 2004-07-15 2005-06-30 Wellen- und Lageranordnung Active EP1617046B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0407854A FR2873161B1 (fr) 2004-07-15 2004-07-15 Ensemble comprenant un arbre rotatif et un palier a roulement

Publications (2)

Publication Number Publication Date
EP1617046A1 EP1617046A1 (de) 2006-01-18
EP1617046B1 true EP1617046B1 (de) 2007-01-24

Family

ID=34940264

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05105982A Active EP1617046B1 (de) 2004-07-15 2005-06-30 Wellen- und Lageranordnung

Country Status (5)

Country Link
US (1) US7775723B2 (de)
EP (1) EP1617046B1 (de)
DE (1) DE602005000494T2 (de)
ES (1) ES2281056T3 (de)
FR (1) FR2873161B1 (de)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0524929D0 (en) * 2005-12-06 2006-01-18 Rolls Royce Plc Retention arrangement
FR2917783B1 (fr) * 2007-06-25 2013-04-12 Snecma Systeme de liaison d'arbre moteur avec ecrou auto-extracteur
FR2931874B1 (fr) * 2008-05-29 2010-06-25 Snecma Dispositif de blocage axial d'un palier de guidage d'arbre dans une turbomachine.
US8840375B2 (en) * 2011-03-21 2014-09-23 United Technologies Corporation Component lock for a gas turbine engine
US10323519B2 (en) * 2016-06-23 2019-06-18 United Technologies Corporation Gas turbine engine having a turbine rotor with torque transfer and balance features
US10669877B2 (en) 2017-12-21 2020-06-02 United Technologies Corporation Air seal attachment
FR3105981B1 (fr) 2020-01-08 2023-01-06 Safran Aircraft Engines Jonc d’assemblage pour turbomachine
US11480071B2 (en) * 2020-06-02 2022-10-25 Pratt & Whitney Canada Corp. Balancing ring geometry

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Publication number Priority date Publication date Assignee Title
US2439161A (en) * 1946-10-09 1948-04-06 Wright Aeronautical Corp Attaching means
US2553220A (en) * 1948-05-25 1951-05-15 Bendix Aviat Corp Quick detachable means
US2785550A (en) * 1952-07-25 1957-03-19 Rolls Royce Rotary drive-transmitting coupling arrangements
US2890900A (en) * 1955-06-27 1959-06-16 Goodall Rubber Co Hose coupling having longitudinal locking means
US2913261A (en) * 1957-07-16 1959-11-17 Perlman William Tube couplings
DE1400287A1 (de) * 1961-11-14 1968-10-24 Elektro Und Feinmechanik Aache Geteiltes Maschinenelement aus gepressten Sinterwerkstoffen
GB1057339A (en) * 1965-07-19 1967-02-01 Rolls Royce Rotatable shafting
US3616958A (en) * 1969-04-16 1971-11-02 Orson L Mitchell Separable pressure tank apparatus
US3571886A (en) * 1969-05-27 1971-03-23 Gen Electric Attachment device and cooperating tool means
US3637238A (en) * 1970-01-15 1972-01-25 Gottlieb W Grosch Drill pipe couplings
US3631735A (en) * 1970-07-02 1972-01-04 Gen Electric Gas turbine engine gearboxes
BE789470A (fr) * 1971-09-30 1973-01-15 Gen Electric Dispositif de fixation et outil pour celui-ci
US3750489A (en) * 1972-06-07 1973-08-07 Caterpillar Tractor Co Composite drive assembly
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US4687084A (en) * 1985-07-22 1987-08-18 Automotive Products Plc Clutch release apparatus for pull type clutches
FR2629537B1 (fr) * 1988-03-30 1990-11-30 Snecma Palier inter-arbres de turbomachine multi-corps muni d'un dispositif de pilotage de jeu
FR2637335B1 (fr) * 1988-09-14 1990-11-30 Snecma Accouplement d'un arbre dans un support de palier de turbomachine et procede de desaccouplage
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GB9925261D0 (en) * 1999-10-27 1999-12-29 Rolls Royce Plc Locking devices

Also Published As

Publication number Publication date
FR2873161A1 (fr) 2006-01-20
US20060291955A1 (en) 2006-12-28
FR2873161B1 (fr) 2008-10-10
DE602005000494T2 (de) 2007-10-31
DE602005000494D1 (de) 2007-03-15
US7775723B2 (en) 2010-08-17
EP1617046A1 (de) 2006-01-18
ES2281056T3 (es) 2007-09-16

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