US3811577A - Enclosed gear drive mechanism for excavators - Google Patents

Enclosed gear drive mechanism for excavators Download PDF

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Publication number
US3811577A
US3811577A US00238311A US23831172A US3811577A US 3811577 A US3811577 A US 3811577A US 00238311 A US00238311 A US 00238311A US 23831172 A US23831172 A US 23831172A US 3811577 A US3811577 A US 3811577A
Authority
US
United States
Prior art keywords
ring gear
disposed
annular
central axis
tray
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
US00238311A
Other languages
English (en)
Inventor
J Yancey
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.)
Caterpillar Inc
Original Assignee
Caterpillar Tractor Co
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 Caterpillar Tractor Co filed Critical Caterpillar Tractor Co
Priority to US00238311A priority Critical patent/US3811577A/en
Priority to CA166,273A priority patent/CA971397A/en
Priority to GB1826775A priority patent/GB1417592A/en
Priority to GB1391773A priority patent/GB1417591A/en
Priority to FR7310398A priority patent/FR2177073B1/fr
Priority to JP48032821A priority patent/JPS5819826B2/ja
Priority to BE129177A priority patent/BE797234A/fr
Application granted granted Critical
Publication of US3811577A publication Critical patent/US3811577A/en
Priority to CA215,597A priority patent/CA973395A/en
Assigned to CATERPILLAR INC., A CORP. OF DE. reassignment CATERPILLAR INC., A CORP. OF DE. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: CATERPILLAR TRACTOR CO., A CORP. OF CALIF.
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/08—Superstructures; Supports for superstructures
    • E02F9/10—Supports for movable superstructures mounted on travelling or walking gears or on other superstructures
    • E02F9/12—Slewing or traversing gears
    • E02F9/121—Turntables, i.e. structure rotatable about 360°
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D55/00—Endless track vehicles
    • B62D55/06—Endless track vehicles with tracks without ground wheels
    • B62D55/062—Tracked vehicles of great dimensions adapted for moving bulky loads or gear
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/08—Superstructures; Supports for superstructures
    • E02F9/10—Supports for movable superstructures mounted on travelling or walking gears or on other superstructures
    • E02F9/12—Slewing or traversing gears
    • E02F9/121—Turntables, i.e. structure rotatable about 360°
    • E02F9/126—Lubrication systems
    • 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
    • F16H57/042—Guidance of lubricant
    • F16H57/0421—Guidance of lubricant on or within the casing, e.g. shields or baffles for collecting lubricant, tubes, pipes, grooves, channels or the like
    • F16H57/0423—Lubricant guiding means mounted or supported on the casing, e.g. shields or baffles for collecting lubricant, tubes or pipes
    • 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
    • Y10T74/00—Machine element or mechanism
    • Y10T74/19—Gearing
    • Y10T74/19991—Lubrication

Definitions

  • an object of this invention is to provide an improved enclosure for a ring and pinion gear drive mechanism.
  • Another object of this invention is to provide an enclosure for a gear drive mechanism which affords a substantially dust-free operating environment for the gears.
  • Another object of this invention is to provide an enclosure for a gear drive mechanism which affords a substantially fluid-tight lubricant compartment around the ring and pinion gears.
  • FIG. 1 is a side elevational view of a hydraulic excavator having the enclosed gear drive mechanism of this invention employed therein.
  • FIG. 2 is an-enlarged top plan view of the enclosed gear drive mechanism, taken on line II 1I in FIG. 1, with portions broken-away for illustrative convenience.
  • FIGS. 3 and 4 are sections respectively taken on lines IIII1I and lV-IV in FIG. 2.
  • FIG. 5 is a fragmentary section taken on line VV in FIG. 3.
  • an earthworking machine such as a hydraulic excavator 10
  • the upper unit includes a mounting ring 14 secured under a frame 15 whereas the undercarriage has a support ring 16 secured thereon.
  • the undercarriage may be mounted on standard, laterally spaced endless tracks.
  • 'swing bearing 13 includes an inner ring member 17 secured to underlying support ring 16 by bolts 18.
  • the inner ring member is concentrically disposed about a vertically disposed central axis X thereof (FIG. 2) and within anouter ring member 19, attached to mounting ring 14 by bolts 20.
  • the inner and outer ring members are formed with complementary raceways 21 and 22, respectively, which mount bearings means therein comprising a series of circumferentially disposed ball bearings 23 to enable relative rotary movement to occur between the ring members about common axis X (FIG. 2).
  • the inner ring member forms a reaction-type ring gear comprising a plurality of gear teeth 24 positioned to face radially inwardly towards such axis.
  • Annular lip seals 25 and 26 are secured to the inner and outer ring members, respectively, and are maintained in sliding and sealing contact with the other ring member. The seals cooperate to prevent the entrance of dust and other foreign matter into the raceways and bearings.
  • a power transmission 27, powered by a hydraulic motor 28, is mounted on the upper unit to selectively rotate the upper unit on the undercarriage.
  • the transmission terminates at a vertically disposed swing or output shaft 29 having a swing pinion 30 attached thereto (FIG. 4).
  • the swing pinion is selectively driven against relatively stationary inner ring member or reaction ring gear 17 to effect such rotation.
  • an enclosure 31 of the present invention includes a horizontally disposed annular upper wall 32 which extends radially inwardly from swing bearing 13.
  • the upper wall has a flat outer flange 33 sealingly secured between outer ring member 19 of the swing bearing and mounting ring 14 of upper unit 11.
  • a horizontally disposed annular'lower wall 34 is spaced vertically below the upper wall and has an outer flange 35 sealingly secured between inner ring member 17 of the bearing and support ring 16.
  • the lower wall extends radially inwardly from the swing bearing and has an outwardly extending inner sidewall 36 which is disposed generally vertically between the upper and lower walls and is concentric with respect to the swing bearing.
  • a standard liquid gasket compound may be pre-applied to both sides of flanges 33 and 35 prior to the assembly of the upper and lower walls to provide a leakproof seal thereat.
  • An annular sealing means such as lip seal 37, is secured to the upper edge of sidewall 36 to sealingly engage the upper wall. Seal 37, along with seal 26, fully seals an annular chamber 38 defined by wall means comprising walls 32, 34 and 36 and the toothed side of ring gear 17.
  • an aperture 39 is formed through upper wall 32 to permit swing pinion 30 to extend therethrough and into chamber 38.
  • An annular seal 40 is positioned between the lower end of a tubular housing, rotatably mounting swing shaft 29 therein, and the upper wall to form a fluid tight joint t'herebetween.
  • a substantially annular U-shaped tray 41 disposed in chamber 38 and spaced apart from the wall means forming same, includes a pair of radially spaced sidewalls 42 and 43 extending vertically upwardly from a horizontally disposed, contiguous bottom wall 14, positioned vertically below ring gear 17.
  • the upper ends of the sidewalls terminate at flanges 45 and 46, secured by welds or the like to upper wall 32.
  • the tray is interrupted circumferentially to define an opening 47 (FIG.- 2) aligned with aperture 39 formed in the upper wall, to accommodate pinion 30 therein.
  • a plurality of circumferentially spaced baffle plates- 48 are secured within the tray to extend radially between sidewalls 42 and 43 to divide the tray into a plurality of individual compartments 49.
  • the tray is concentrically arranged between the ring gear and sidewall 36.
  • Sidewall 42 has a plurality of circumferentially spaced ports 50 formed therethrough (FIGS. 3 and adjacent to ring gear 17, to communicate each compartment 49 with annular chamber 38.
  • a filler tube 51 (FIG. 3) is secured at its lower end to the upper wall and has a cap removably attached thereon for partially filling chamber 38 and compartments 49 with a lubricating oil.
  • a dip stick assembly 52 is also secured to the upper wall and has a dip stick 53 removably attached thereto and positioned to have its lower end extend into one of the compartments 49.
  • a standard drain plug 54 (FIG. 3) is removably attached to the lower wall to facilitate an oil change.
  • chamber 38 H When vehicle 10 is substantially level, chamber 38 H common level due to the disposition of communicating ports 50.
  • the chamber and compartments are preferably filled to at least cover the lower portions of ring gear 17.
  • swing pinion 30 When swing pinion 30 is rotated to cause it to walk around the ring gear, lubricating oil will splash onto the meshing gear teeth to fully and continuously lubricate the teeth during usage.
  • compartments 49 will function to maintain a fairly uniform distribution of the lubricating oil around chamber 38.
  • the compartments maintained on the high side will trap and retain substantially all of the lubricating oil, originally contained therein when the machine was level, primarily due to the disposition of ports'50 on the outboard side of the compartments.
  • only the limited amount of oil contained in the high side of chamber 38, between teeth 24 and sidewall 42, will run to the low side thereof.
  • the compartments maintained on the low side will provide sufficient volume to receive such running oil.
  • Such co-action between the high and low compartments will assure that a low oil level will be maintained at the low side of the chamber to inhibit oil leakage through lip seals 25 and 26 when the vehicle is operating on a side slope.
  • a slight leakage of oil past lip seal 26 is acceptable for purposes of lubricating ball bearings 23.
  • the present invention provides an improved enclosure and lubricating system for a gear drive mechanism.
  • the enclosure prevents the entrance of dust and grit into the enclosure to greatly minimize wear normally occasioned in conventional mechanisms of this type.
  • the enclosure contains a lubricant which may be maintained at a minimum level while yet continuously assuring adequate lubrication of all portions of the mechanism even during adverse operating conditions, such as side hill operations.
  • a construction machine comprising an upper unit having a support secured thereunder,
  • a mobile undercarriage having a reaction-type ring gear secured thereto and concentrically disposed about a vertically disposed central axis thereof
  • a power transmission mounted on said upper unit, having a vertically disposed swing shaft rotatably mounted therein and a swing pinion attached to said swing shaft and positioned thereon to mesh with said ring gear directly, and
  • an enclosure having wall means, including a lower annular wall extending radially inwardly towards said central axis in close proximity to said ring gear and said swing pinion, defining a closed and sealed annular chamber, meshing teeth of said ring gear and said swing pinion disposed in said chamber.
  • said wall means includes vertically spaced and horizontally disposed annular upper and lower walls extending radially inwardly towards said central axis from said. ring gear and a generally vertical and annular inner sidewall spaced radially inwardly from said ring gear and disposed generally vertically between said upper and lower walls.
  • the invention of claim 3 further including a substantially annular Ushaped tray disposed in said annular chamber comprising contiguous sidewalls and a bottom wall, each spaced apart from said wall means.
  • said tray further comprises a plurality of circumferentially spaced plates disposed in said tray to extend radially inwardly towards said central axis, between the sidewalls of said tray, to divide the tray into a plurality of individual compartments disposed circumferentially about said central axis.
  • bearing means rotatably mounting said outer member on said inner member for rotation about a vertically disposed central axis
  • an enclosure forming wall means including portions of said inner member, defining a sealed, annular chamber concentrically disposed with respect to said inner and outer members and adapted to retain a gear drive mechanism therein, and
  • a substantially annular U-shaped tray disposed in said annular chamber and having a plurality of circumferentially spaced and substantially vertical baffle plates disposed therein to form a plurality of individual compartments, and means forming a plurality of ports through said tray for communicating at least some of said compartments with said annular chamber.
  • said inner member comprises a ring gear having teeth formed thereon to face radially inwardly towards said central axis
  • a pinion gear attached to said outer member and meshed with the teeth of said ring gear.
  • said wall means includes vertically spaced and horizontally disposed annular upper and lower walls extending radially inwardly towards said central axis from said ring gear and a generally vertical and annular inner sidewall disposed therebetween and radially inwardly from said ring gear towards said central axis.
  • a horizontally disposed, annular enclosure completely enclosing a gear drive mechanism'and lubricating means comprising a plurality of circumferentially spaced baffle plates disposed in said enclosure to form a plurality of individual compartments therein and means communicating at least some of said compartments with said gear drive mechanism through a radially outer side of said enclosure for maintaining a substantially uniform distribution of lubricating fluid circumferentially around said enclosure when said enclosure is tilted relative to its normal horizontal disposition.
  • said gear drive mechanism comprises a horizontally disposed, annular ring gear having teeth formed thereon which face radially inwardly towards a vertically disposed central axis thereof, and a pinion gear mounted for rotation about a vertically disposed axis thereof which is parallel to said central axis and meshing with the teeth of said ring gear.
US00238311A 1972-03-27 1972-03-27 Enclosed gear drive mechanism for excavators Expired - Lifetime US3811577A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
US00238311A US3811577A (en) 1972-03-27 1972-03-27 Enclosed gear drive mechanism for excavators
CA166,273A CA971397A (en) 1972-03-27 1973-03-16 Enclosed gear drive mechanism for excavators
GB1391773A GB1417591A (en) 1972-03-27 1973-03-22 Earthworking machines
FR7310398A FR2177073B1 (fr) 1972-03-27 1973-03-22
GB1826775A GB1417592A (en) 1972-03-27 1973-03-22 Drive transmission apparatus
JP48032821A JPS5819826B2 (ja) 1972-03-27 1973-03-23 ドコウキカイ
BE129177A BE797234A (fr) 1972-03-27 1973-03-23 Mecanisme de transmission, notamment pour une machine de terrassement
CA215,597A CA973395A (en) 1972-03-27 1974-12-10 Enclosed gear drive mechanism for excavators

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00238311A US3811577A (en) 1972-03-27 1972-03-27 Enclosed gear drive mechanism for excavators

Publications (1)

Publication Number Publication Date
US3811577A true US3811577A (en) 1974-05-21

Family

ID=22897352

Family Applications (1)

Application Number Title Priority Date Filing Date
US00238311A Expired - Lifetime US3811577A (en) 1972-03-27 1972-03-27 Enclosed gear drive mechanism for excavators

Country Status (6)

Country Link
US (1) US3811577A (fr)
JP (1) JPS5819826B2 (fr)
BE (1) BE797234A (fr)
CA (1) CA971397A (fr)
FR (1) FR2177073B1 (fr)
GB (1) GB1417591A (fr)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3990539A (en) * 1970-08-05 1976-11-09 Caterpillar Tractor Co. Lubrication means for swing gear drive
US4524875A (en) * 1981-10-15 1985-06-25 Vickers P.L.C. Derrick crane
FR2615219A1 (fr) * 1987-05-15 1988-11-18 Kubota Ltd Vehicule a pelle retrocaveuse
US5040428A (en) * 1989-03-23 1991-08-20 Kabushiki Kaisha Kobe Seiko Sho Swing reduction gear assembly
US5078285A (en) * 1990-01-24 1992-01-07 Dresser Industries, Inc. Dragline modular swing drive unit
US5438912A (en) * 1994-09-21 1995-08-08 Caterpillar Inc. Hydraulic rotary actuator
US5440970A (en) * 1994-09-21 1995-08-15 Caterpillar Inc. Hydraulic rotary actuator
US6035736A (en) * 1997-11-07 2000-03-14 Caterpillar Inc. Adjustable pinion gear mounting arrangement
WO2003019004A1 (fr) * 2001-08-25 2003-03-06 Aloys Wobben Lubrification pour dispositif de reglage d'angle d'attaque sur une pale de rotor d'eolienne
US20100135607A1 (en) * 2009-09-30 2010-06-03 Peter Rogall Seal arrangement and a brush seal for a wind turbine
US20140205456A1 (en) * 2011-07-13 2014-07-24 Alstom Renovables España, S.L. Wind turbine auxiliary drive system
US10281026B2 (en) * 2016-10-28 2019-05-07 Deere & Company Lubricant retention shield
US11753796B1 (en) * 2022-11-17 2023-09-12 Deere & Company Swing drive with oil management system and work vehicle with same

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5256101A (en) * 1975-11-05 1977-05-09 Nippon Kokan Kk <Nkk> Method for reducing nitrogen oxide in combustion exhaust gas of coke f urnace
FR2467759A1 (fr) * 1979-10-18 1981-04-30 Poclain Sa Chassis porteur d'un engin mobile muni d'une tourelle rotative
BR8009089A (pt) * 1980-07-14 1982-06-01 Caterpillar Tractor Co Conjunto para enchimento de uma transmissao
CN111776966B (zh) * 2020-06-12 2021-11-23 台州博能起重机械设备有限公司 一种便于散热的电动葫芦

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2479838A (en) * 1945-12-27 1949-08-23 William M Huston Load handling equipment
US3452624A (en) * 1967-06-26 1969-07-01 Lorence Mfg Corp Drive mechanism for a slew ring assembly
US3726418A (en) * 1971-07-01 1973-04-10 Clark Equipment Co System and method for removable installation of swing circle for large crane

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2343800A (en) * 1941-10-25 1944-03-07 John D Rauch Vehicle construction
US2759374A (en) * 1954-02-01 1956-08-21 Westinghouse Air Brake Co Crawler transmission
US3424318A (en) * 1966-10-31 1969-01-28 Lorence Mfg Corp Turntable drive mechanism

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2479838A (en) * 1945-12-27 1949-08-23 William M Huston Load handling equipment
US3452624A (en) * 1967-06-26 1969-07-01 Lorence Mfg Corp Drive mechanism for a slew ring assembly
US3726418A (en) * 1971-07-01 1973-04-10 Clark Equipment Co System and method for removable installation of swing circle for large crane

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3990539A (en) * 1970-08-05 1976-11-09 Caterpillar Tractor Co. Lubrication means for swing gear drive
US4524875A (en) * 1981-10-15 1985-06-25 Vickers P.L.C. Derrick crane
FR2615219A1 (fr) * 1987-05-15 1988-11-18 Kubota Ltd Vehicule a pelle retrocaveuse
US5040428A (en) * 1989-03-23 1991-08-20 Kabushiki Kaisha Kobe Seiko Sho Swing reduction gear assembly
US5078285A (en) * 1990-01-24 1992-01-07 Dresser Industries, Inc. Dragline modular swing drive unit
AU624738B2 (en) * 1990-01-24 1992-06-18 Dresser Industries Inc. Dragline modular swing drive unit
US5438912A (en) * 1994-09-21 1995-08-08 Caterpillar Inc. Hydraulic rotary actuator
US5440970A (en) * 1994-09-21 1995-08-15 Caterpillar Inc. Hydraulic rotary actuator
US6035736A (en) * 1997-11-07 2000-03-14 Caterpillar Inc. Adjustable pinion gear mounting arrangement
WO2003019004A1 (fr) * 2001-08-25 2003-03-06 Aloys Wobben Lubrification pour dispositif de reglage d'angle d'attaque sur une pale de rotor d'eolienne
US20040240997A1 (en) * 2001-08-25 2004-12-02 Aloys Wobben Lubrication of a pitch angle adjusting device of a rotor blade of a windmill
AU2002333509B2 (en) * 2001-08-25 2005-04-21 Aloys Wobben Lubrication of a pitch angle adjusting device of a rotor blade of a windmill
US7077630B2 (en) 2001-08-25 2006-07-18 Aloys Wobben Lubrication of a pitch angle adjusting device of a rotor blade of a windmill
CN1318754C (zh) * 2001-08-25 2007-05-30 艾劳埃斯·乌本 一种驱动风力装置转子叶片旋转的装置
US20100135607A1 (en) * 2009-09-30 2010-06-03 Peter Rogall Seal arrangement and a brush seal for a wind turbine
US8043012B2 (en) 2009-09-30 2011-10-25 General Electric Company Seal arrangement and a brush seal for a wind turbine
US20140205456A1 (en) * 2011-07-13 2014-07-24 Alstom Renovables España, S.L. Wind turbine auxiliary drive system
US9523350B2 (en) * 2011-07-13 2016-12-20 Alstom Renovables España, S.L. Wind turbine auxiliary drive system
US10281026B2 (en) * 2016-10-28 2019-05-07 Deere & Company Lubricant retention shield
US11753796B1 (en) * 2022-11-17 2023-09-12 Deere & Company Swing drive with oil management system and work vehicle with same

Also Published As

Publication number Publication date
JPS498002A (fr) 1974-01-24
FR2177073A1 (fr) 1973-11-02
CA971397A (en) 1975-07-22
JPS5819826B2 (ja) 1983-04-20
GB1417591A (en) 1975-12-10
FR2177073B1 (fr) 1980-04-30
BE797234A (fr) 1973-09-24

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Legal Events

Date Code Title Description
AS Assignment

Owner name: CATERPILLAR INC., 100 N.E. ADAMS STREET, PEORIA, I

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:CATERPILLAR TRACTOR CO., A CORP. OF CALIF.;REEL/FRAME:004669/0905

Effective date: 19860515

Owner name: CATERPILLAR INC., A CORP. OF DE.,ILLINOIS

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:CATERPILLAR TRACTOR CO., A CORP. OF CALIF.;REEL/FRAME:004669/0905

Effective date: 19860515