EP1489263B1 - Liaison arbre-moyeu d'un turbocompresseur - Google Patents

Liaison arbre-moyeu d'un turbocompresseur Download PDF

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Publication number
EP1489263B1
EP1489263B1 EP03405441A EP03405441A EP1489263B1 EP 1489263 B1 EP1489263 B1 EP 1489263B1 EP 03405441 A EP03405441 A EP 03405441A EP 03405441 A EP03405441 A EP 03405441A EP 1489263 B1 EP1489263 B1 EP 1489263B1
Authority
EP
European Patent Office
Prior art keywords
shaft
thread
compressor wheel
flanks
attachment
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.)
Expired - Lifetime
Application number
EP03405441A
Other languages
German (de)
English (en)
Other versions
EP1489263A1 (fr
Inventor
Josef Bättig
Alfred Mueller
Balz Flury
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.)
Accelleron Industries AG
Original Assignee
ABB Turbo Systems AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ABB Turbo Systems AG filed Critical ABB Turbo Systems AG
Priority to EP03405441A priority Critical patent/EP1489263B1/fr
Priority to DE50306502T priority patent/DE50306502D1/de
Priority to US10/861,360 priority patent/US6918723B2/en
Publication of EP1489263A1 publication Critical patent/EP1489263A1/fr
Application granted granted Critical
Publication of EP1489263B1 publication Critical patent/EP1489263B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/02—Blade-carrying members, e.g. rotors
    • F01D5/025—Fixing blade carrying members on shafts
    • 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
    • F05D2220/00—Application
    • F05D2220/40—Application in turbochargers
    • 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
    • F05D2250/00—Geometry
    • F05D2250/20—Three-dimensional
    • F05D2250/23—Three-dimensional prismatic
    • F05D2250/232—Three-dimensional prismatic conical
    • 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
    • F05D2250/00—Geometry
    • F05D2250/20—Three-dimensional
    • F05D2250/28—Three-dimensional patterned
    • F05D2250/281—Three-dimensional patterned threaded

Definitions

  • the invention relates to the field of shaft / hub connections.
  • Turbochargers to increase the performance of reciprocating engines include an engine exhaust driven turbine and a torque transmitting shaft connected to the turbine compressor.
  • Turbochargers for smaller engine outputs advantageously have a radial compressor made of aluminum without a central bore, as known from DE 44 44 082.
  • the compressor is releasably connected for manufacturing and maintenance reasons with the turbine shaft.
  • the compressor wheel is screwed either directly or via an intermediate sleeve made of steel or bronze on a stub shaft with a conventional thread.
  • At least one threaded, cylindrical or conical centering seat provides centering of the compressor wheel with respect to the shaft.
  • the compressor wheel is braced against an axial stop on the shaft.
  • the torque transmission takes place frictionally in the thread on the pressed together in the axial direction supporting thread flanks.
  • the supporting thread flanks are as steep as possible to the shaft axis, so that the biasing force can act substantially normal to the surface of the supporting thread flanks.
  • GB 826 136 discloses a thread arrangement in an optical device.
  • US 4,304,428 discloses a threaded connection for emergency retrieval of drilling tool by means of the threaded connection.
  • GB 241 211 discloses a general screw / nut connection.
  • the invention is therefore an object of the invention to provide a compound of the type mentioned, which allows an improved torque transmission with reduced axial preload.
  • a shaft with a shaft attachment by means of a thread, in which either a bore with an internal thread is embedded in the shaft attachment or in the shaft end, and the shaft or the shaft attachment has a corresponding, can be introduced into the threaded hole pin with an external thread, and an axial stop is arranged on the shaft and on the shaft attachment, the inner and the outer thread to the axis of shaft and shaft attachment towards flat, torque transmitting flanks, which frictionally by mutual rotation of shaft and shaft attachment, the interaction of the axial stops by means of radial pressure can be connected to each other.
  • the decisive for the torque transmission radial pressure is due to the flat angle between the load-bearing, with their large surfaces frictionally superimposed flanks and the axis correspondingly larger than in conventional threaded connections. Thereby, the axial biasing force between the two parts to be joined can be reduced accordingly.
  • the flat-shaped supporting flanks allow improved centering of shaft extension and shaft.
  • the shaft attachment is shown by way of example as a cylindrical counterpart corresponding in shape and size approximately to the shaft.
  • the shaft attachment is a wheel-shaped part, such as the compressor wheel of a turbocharger.
  • the shaft has an external thread in the region of the connection point.
  • the external thread is formed on the shaft end in the form of a threaded pin 10.
  • a corresponding bore 20 is inserted, which is equipped with an internal thread.
  • shaft and shaft attachment For the axial positioning of the shaft attachment with respect to the shaft, shaft and shaft attachment have an axial stop 11 and 21.
  • the two axial stops usually have parallel surfaces produced with high precision, thus contributing significantly to the concentricity of shaft attachment and shaft. Between Axial stops can, further parts be arranged, for example, as shown in the figure, a sealing or damping disc. 3
  • Fig. 2 shows a view of a guided along the shaft axis section through the inventive compound.
  • the two axial stops 11 and 21 are pressed together when screwing the shaft attachment to the shaft, whereby the shaft attachment is biased against the shaft.
  • the shaft attachment is usually a larger, made of a relatively soft material part, the expansion of the shaft attachment can be prevented by the threaded pin in the threaded connection by pushing a hard steel bushing 4 on the shaft attachment.
  • the special, inventive design of the thread is shown enlarged in Fig. 3.
  • the thread has bearing flanks 15 and 25 as well as production-related, unstressed flanks 16 and 26.
  • the supporting flanks 15 and 25 enclose with the axis A of the shaft and the shaft attachment a very shallow angle ⁇ .
  • the flank angle ⁇ is ideally 5 ° to 15 °. The flatter this angle ⁇ , the lower the axial preload force that can be transmitted through the thread to clamp the two parts to be joined, the shaft and the shaft attachment by means of the axial stops against each other.
  • the thread according to the invention is designed to run more smoothly, preferably three-pass. This results in a given flank angle less deep thread grooves and thus lower cross-sectional weakenings.
  • a 3-thread thread due to the 3-cyclic symmetry leads to an improved centering of the shaft attachment on the shaft.
  • the turn-up angle is massively reduced.
  • the flat formed bearing flanks bring a further improvement in the centering of the shaft attachment on the shaft.
  • the flat thread according to the invention has substantially larger fillet radii 17 and 27.
  • the thread according to the invention has virtually no notch effect and is considerably more resilient with respect to dynamic torque fluctuations than a conventional thread.
  • the thread as shown in the various figures, is a conical thread
  • the introduction of force improves compared with a cylindrical version, while the screw-on paths shorten.
  • Figures 4 to 7 show detailed detailed views of the shaft and the shaft attachment.
  • the views in the axial direction show the three-start threads.
  • the three threads are arranged offset by 120 °.
  • the arrangement of the threaded pin and the bore, or the outer and the inner thread can also be reversed, so that the shaft attachment a threaded pin is arranged and the corresponding hole is recessed in the shaft end.
  • the threaded pin does not need to be designed as a stub.
  • the external thread can be arranged in a middle region of a rod-shaped shaft, wherein the bore in the shaft attachment must be correspondingly deep or continuous for the threaded extension.

Landscapes

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

Claims (4)

  1. Turbocompresseur, comprenant une roue de turbine et une roue de compresseur (2) connectée à la roue de turbine par le biais d'un arbre (1), dans lequel
    l'arbre (1) et la roue de compresseur (2) sont connectés au moyen d'un filetage,
    un alésage (20) avec un filetage interne est pratiqué soit dans la roue de compresseur (2) soit dans une extrémité de l'arbre (1) à connecter à la roue de compresseur, et l'arbre ou la roue de compresseur présente un tourillon (10) correspondant, avec un filetage externe, pouvant être introduit dans l'alésage fileté, et
    une butée axiale (11, 21) est disposée à chaque fois sur l'arbre (1) et sur la roue de compresseur (2),
    caractérisé en ce que
    le filetage interne et le filetage externe présentent des flancs (15, 25) plats transmettant le couple vers l'axe de l'arbre et de la roue de compresseur (A), qui peuvent être connectés mutuellement par engagement par frottement au moyen d'un pressage radial par rotation mutuelle de l'arbre (1) et de la roue de compresseur (2), avec coopération des butées axiales.
  2. Turbocompresseur selon la revendication 1, caractérisé en ce que le tourillon fileté (10) et l'alésage fileté (20) sont réalisés au moins en partie avec une forme conique, et en ce que le filetage est un filetage conique.
  3. Turbocompresseur selon l'une quelconque des revendications 1 ou 2, caractérisé en ce que le filetage est un filetage à plusieurs pas, notamment à trois pas.
  4. Turbocompresseur selon l'une quelconque des revendications 1 à 3, caractérisé en ce que les flancs transmettant le couple (15, 25) forment avec l'axe de l'arbre et de la roue de compresseur (A) un angle compris entre 5° et 15°.
EP03405441A 2003-06-19 2003-06-19 Liaison arbre-moyeu d'un turbocompresseur Expired - Lifetime EP1489263B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP03405441A EP1489263B1 (fr) 2003-06-19 2003-06-19 Liaison arbre-moyeu d'un turbocompresseur
DE50306502T DE50306502D1 (de) 2003-06-19 2003-06-19 Wellen-/Nabenverbindung eines Turboladers
US10/861,360 US6918723B2 (en) 2003-06-19 2004-06-07 Shaft/hub connection

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP03405441A EP1489263B1 (fr) 2003-06-19 2003-06-19 Liaison arbre-moyeu d'un turbocompresseur

Publications (2)

Publication Number Publication Date
EP1489263A1 EP1489263A1 (fr) 2004-12-22
EP1489263B1 true EP1489263B1 (fr) 2007-02-14

Family

ID=33396093

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03405441A Expired - Lifetime EP1489263B1 (fr) 2003-06-19 2003-06-19 Liaison arbre-moyeu d'un turbocompresseur

Country Status (3)

Country Link
US (1) US6918723B2 (fr)
EP (1) EP1489263B1 (fr)
DE (1) DE50306502D1 (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005030382A (ja) * 2003-06-18 2005-02-03 Komatsu Ltd ターボ機械の圧縮装置及びそのコンプレッサインペラ
US20070009340A1 (en) * 2005-07-11 2007-01-11 Van Cor Dale E Conic threaded fastener and fastener system
NL2001433C2 (nl) * 2008-04-02 2009-10-05 Bronswerk Heat Transfer Bv Conische schroefkoppeling.
DE102011051961A1 (de) * 2011-07-20 2013-01-24 Zf Lenksysteme Gmbh Vorrichtung zur Lagesicherung einer Einheit
CN203306224U (zh) 2013-05-31 2013-11-27 深圳市大疆创新科技有限公司 螺旋桨及具有该螺旋桨的飞行器
USD712242S1 (en) * 2013-06-25 2014-09-02 Yves Saint Laurent Bi-cylindrical nail
DE102013015563A1 (de) * 2013-09-20 2015-03-26 Abb Turbo Systems Ag Abgasturbolader
DE102013018005A1 (de) 2013-11-29 2015-06-03 Mtu Friedrichshafen Gmbh Wellen-Naben-Verbindung
CN103846613B (zh) * 2014-02-12 2016-06-15 中国北方发动机研究所(天津) 增压器涡轮叶轮与转轴的圆锥螺纹连接方法与连接结构
US9889509B2 (en) * 2014-05-05 2018-02-13 Kennametal Inc. Cutter heads with improved coupling
CN114375276B (zh) * 2019-10-09 2024-12-24 小鹰公司 具有前掠翼的短距起降载具
US12145753B2 (en) * 2022-08-09 2024-11-19 Pete Bitar Compact and lightweight drone delivery device called an ArcSpear electric jet drone system having an electric ducted air propulsion system and being relatively difficult to track in flight

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB241211A (en) * 1924-10-09 1927-01-10 Fr De Filetage Indesserrable D An improved self-locking nut and bolt
FR1140284A (fr) * 1955-02-08 1957-07-18 Voigtlaender Ag Filetage pour appareils optiques, notamment pour objectifs photographiques
FR2315568A1 (fr) * 1975-06-25 1977-01-21 Vape Sa Ets Dispositif de fixation a vis dans un element de construction en matiere agglomeree
US4304428A (en) * 1976-05-03 1981-12-08 Grigorian Samvel S Tapered screw joint and device for emergency recovery of boring tool from borehole with the use of said joint
US4309135A (en) * 1980-07-18 1982-01-05 Keystone Consolidated Industries, Inc. Concrete anchor
US4712955A (en) * 1985-05-14 1987-12-15 Rexnord Inc. Expandable fastener assembly
NO882384L (no) * 1988-05-31 1989-12-01 Kongsberg Offshore As Anordning ved strekkstagkoblinger.
DE4444082A1 (de) 1994-12-10 1996-06-13 Abb Management Ag Abgasturbolader für Brennkraftmaschinen

Also Published As

Publication number Publication date
EP1489263A1 (fr) 2004-12-22
US20040258467A1 (en) 2004-12-23
DE50306502D1 (de) 2007-03-29
US6918723B2 (en) 2005-07-19

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