WO2015069361A3 - Load balanced journal bearing pin - Google Patents

Load balanced journal bearing pin Download PDF

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Publication number
WO2015069361A3
WO2015069361A3 PCT/US2014/051830 US2014051830W WO2015069361A3 WO 2015069361 A3 WO2015069361 A3 WO 2015069361A3 US 2014051830 W US2014051830 W US 2014051830W WO 2015069361 A3 WO2015069361 A3 WO 2015069361A3
Authority
WO
WIPO (PCT)
Prior art keywords
gear
bearing pin
journal bearing
load balanced
intermediate gears
Prior art date
Application number
PCT/US2014/051830
Other languages
French (fr)
Other versions
WO2015069361A2 (en
Inventor
William G. Sheridan
Original Assignee
United Technologies Corporation
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 United Technologies Corporation filed Critical United Technologies Corporation
Priority to EP14860693.2A priority Critical patent/EP3036420B1/en
Publication of WO2015069361A2 publication Critical patent/WO2015069361A2/en
Publication of WO2015069361A3 publication Critical patent/WO2015069361A3/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
    • F02C7/36—Power transmission arrangements between the different shafts of the gas turbine plant, or between the gas-turbine plant and the power user
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C3/00—Gas-turbine plants characterised by the use of combustion products as the working fluid
    • F02C3/04—Gas-turbine plants characterised by the use of combustion products as the working fluid having a turbine driving a compressor
    • 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
    • F16H—GEARING
    • F16H1/00—Toothed gearings for conveying rotary motion
    • F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
    • F16H1/2809—Toothed gearings for conveying rotary motion with gears having orbital motion with means for equalising the distribution of load on the planet-wheels
    • F16H1/2836—Toothed gearings for conveying rotary motion with gears having orbital motion with means for equalising the distribution of load on the planet-wheels by allowing limited movement of the planets relative to the planet carrier or by using free floating planets
    • 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
    • F16H—GEARING
    • F16H1/00—Toothed gearings for conveying rotary motion
    • F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
    • F16H1/48—Special means compensating for misalignment of axes, e.g. for equalising distribution of load on the face width of the teeth
    • 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
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0467—Elements of gearings to be lubricated, cooled or heated
    • F16H57/0479—Gears or bearings on planet carriers
    • 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
    • F05D2220/30—Application in turbines
    • F05D2220/32—Application in turbines in gas turbines
    • 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
    • F05D2230/50—Building or constructing in particular ways
    • 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
    • F05D2240/00—Components
    • F05D2240/50—Bearings
    • 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
    • F05D2260/00—Function
    • F05D2260/40—Transmission of power
    • F05D2260/403—Transmission of power through the shape of the drive components
    • F05D2260/4031—Transmission of power through the shape of the drive components as in toothed gearing
    • F05D2260/40311—Transmission of power through the shape of the drive components as in toothed gearing of the epicyclical, planetary or differential type
    • 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
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49462—Gear making
    • Y10T29/49464—Assembling of gear into force transmitting device

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Retarders (AREA)
  • General Details Of Gearings (AREA)

Abstract

A disclosed fan drive gear system includes a sun gear rotatable about an axis of rotation, a plurality of intermediate gears rotatable about an intermediate gear rotation axis in meshing engagement with the sun gear and a ring gear circumscribing the intermediate gears. A bearing assembly supports at least one of the plurality of intermediate gears and includes a first beam extending in a first direction and a second beam extending from an end of the first beam in a second direction. The bearing surface supported on the second beam such that first and second beams are configured to maintain the bearing surface substantially parallel to the intermediate gear rotation axis during operation.
PCT/US2014/051830 2013-08-21 2014-08-20 Load balanced journal bearing pin WO2015069361A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP14860693.2A EP3036420B1 (en) 2013-08-21 2014-08-20 Load balanced journal bearing pin

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US201361868120P 2013-08-21 2013-08-21
US61/868,120 2013-08-21
US14/307,587 2014-06-18
US14/307,587 US9726083B2 (en) 2013-08-21 2014-06-18 Load balanced journal bearing pin for planetary gear

Publications (2)

Publication Number Publication Date
WO2015069361A2 WO2015069361A2 (en) 2015-05-14
WO2015069361A3 true WO2015069361A3 (en) 2015-07-02

Family

ID=53042295

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2014/051830 WO2015069361A2 (en) 2013-08-21 2014-08-20 Load balanced journal bearing pin

Country Status (3)

Country Link
US (1) US9726083B2 (en)
EP (1) EP3036420B1 (en)
WO (1) WO2015069361A2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10280843B2 (en) 2014-03-07 2019-05-07 United Technologies Corporation Geared turbofan with integral front support and carrier
DE102017110966A1 (en) * 2017-05-19 2018-11-22 Renk Aktiengesellschaft Transmission in particular for wind power generators
DE102019205345A1 (en) * 2019-04-12 2020-10-15 Rolls-Royce Deutschland Ltd & Co Kg Rolling element device with jointly tiltable raceways
IT201900018104A1 (en) * 2019-10-07 2021-04-07 Ge Avio Srl GEAR TRANSMISSION WITH FLEXIBLE PINS
US20230257128A1 (en) 2022-02-11 2023-08-17 Pratt & Whitney Canada Corp. Hybrid-Electric Aircraft Propulsion System and Method for Operating the Same

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050215389A1 (en) * 2002-01-17 2005-09-29 Toyota Jidosha Kabushiki Kaisha Planetary gearset
US20100331139A1 (en) * 2009-06-25 2010-12-30 United Technologies Corporation Epicyclic gear system with superfinished journal bearing
US20110123326A1 (en) * 2009-11-20 2011-05-26 United Technologies Corporation Bellows preload and centering spring for a fan drive gear system
US8297916B1 (en) * 2011-06-08 2012-10-30 United Technologies Corporation Flexible support structure for a geared architecture gas turbine engine
US20120272762A1 (en) * 2011-04-27 2012-11-01 Sheridan William G Fan drive gear system integrated carrier and torque frame
US20130014490A1 (en) * 2008-06-02 2013-01-17 Suciu Gabriel L Gas turbine engine with low stage count low pressure turbine
US20130051984A1 (en) * 2011-08-30 2013-02-28 United Technologies Corporation Torque frame and asymmetric journal bearing for fan drive gear system
US20130192264A1 (en) * 2012-01-31 2013-08-01 Michael E. McCune Turbine engine gearbox

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1101131A (en) 1964-02-07 1968-01-31 Nat Res Dev Improvements relating to gears
US5102379A (en) * 1991-03-25 1992-04-07 United Technologies Corporation Journal bearing arrangement
US20030008748A1 (en) 2001-06-28 2003-01-09 Gerald Fox Epicyclic gear system
US6964155B2 (en) * 2002-12-30 2005-11-15 United Technologies Corporation Turbofan engine comprising an spicyclic transmission having bearing journals
ATE332457T1 (en) 2003-01-27 2006-07-15 Timken Co PLANETARY GEAR SYSTEMS
US7104918B2 (en) * 2003-07-29 2006-09-12 Pratt & Whitney Canada Corp. Compact epicyclic gear carrier
US8192323B2 (en) 2005-08-01 2012-06-05 The Timken Company Epicyclic gear system with flexpins
GB0518026D0 (en) 2005-09-06 2005-10-12 Orbital 2 Ltd A gear
US8020665B2 (en) * 2006-11-22 2011-09-20 United Technologies Corporation Lubrication system with extended emergency operability
US20130125561A1 (en) * 2007-11-30 2013-05-23 Frederick M. Schwarz Geared turbofan with distributed accessory gearboxes
DK2283250T3 (en) 2008-04-30 2012-11-26 Timken Co Epicyclic gear system with flex pins
US8333678B2 (en) * 2009-06-26 2012-12-18 United Technologies Corporation Epicyclic gear system with load share reduction
US8777793B2 (en) 2011-04-27 2014-07-15 United Technologies Corporation Fan drive planetary gear system integrated carrier and torque frame
US8491435B2 (en) 2011-08-26 2013-07-23 General Electric Company Journal bearing for use in epicyclical gearbox and method of facilitating hydrodynamic oil flow in the journal bearing
US20130319006A1 (en) * 2012-05-31 2013-12-05 Francis Parnin Direct feed auxiliary oil system for geared turbofan engine

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050215389A1 (en) * 2002-01-17 2005-09-29 Toyota Jidosha Kabushiki Kaisha Planetary gearset
US20130014490A1 (en) * 2008-06-02 2013-01-17 Suciu Gabriel L Gas turbine engine with low stage count low pressure turbine
US20100331139A1 (en) * 2009-06-25 2010-12-30 United Technologies Corporation Epicyclic gear system with superfinished journal bearing
US20110123326A1 (en) * 2009-11-20 2011-05-26 United Technologies Corporation Bellows preload and centering spring for a fan drive gear system
US20120272762A1 (en) * 2011-04-27 2012-11-01 Sheridan William G Fan drive gear system integrated carrier and torque frame
US8297916B1 (en) * 2011-06-08 2012-10-30 United Technologies Corporation Flexible support structure for a geared architecture gas turbine engine
US20130051984A1 (en) * 2011-08-30 2013-02-28 United Technologies Corporation Torque frame and asymmetric journal bearing for fan drive gear system
US20130192264A1 (en) * 2012-01-31 2013-08-01 Michael E. McCune Turbine engine gearbox

Also Published As

Publication number Publication date
US9726083B2 (en) 2017-08-08
EP3036420A2 (en) 2016-06-29
WO2015069361A2 (en) 2015-05-14
EP3036420A4 (en) 2017-08-30
US20150285154A1 (en) 2015-10-08
EP3036420B1 (en) 2019-11-13

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