US3857461A - Bidirectional pump system having plural lubrication circuits - Google Patents

Bidirectional pump system having plural lubrication circuits Download PDF

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Publication number
US3857461A
US3857461A US00351479A US35147973A US3857461A US 3857461 A US3857461 A US 3857461A US 00351479 A US00351479 A US 00351479A US 35147973 A US35147973 A US 35147973A US 3857461 A US3857461 A US 3857461A
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US
United States
Prior art keywords
check valve
fluid
pump
communicating
flow
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
US00351479A
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English (en)
Inventor
J Schmitt
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 US00351479A priority Critical patent/US3857461A/en
Priority to JP48102267A priority patent/JPS507971A/ja
Priority to FR7411504A priority patent/FR2225687B1/fr
Priority to GB1458374A priority patent/GB1458285A/en
Application granted granted Critical
Publication of US3857461A publication Critical patent/US3857461A/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

    • 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
    • F16N—LUBRICATING
    • F16N13/00—Lubricating-pumps
    • F16N13/22—Lubricating-pumps with distributing equipment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D55/00—Endless track vehicles
    • B62D55/08—Endless track units; Parts thereof
    • B62D55/12—Arrangement, location, or adaptation of driving sprockets
    • B62D55/125—Final drives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D55/00—Endless track vehicles
    • B62D55/08—Endless track units; Parts thereof
    • B62D55/12—Arrangement, location, or adaptation of driving sprockets
    • B62D55/125—Final drives
    • B62D55/13—Final drives readily interchangeable modular type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
    • F01M11/06—Means for keeping lubricant level constant or for accommodating movement or position of machines or engines
    • 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
    • F16N—LUBRICATING
    • F16N13/00—Lubricating-pumps
    • F16N13/20—Rotary pumps
    • 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
    • F16N—LUBRICATING
    • F16N7/00—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated
    • F16N7/38—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated with a separate pump; Central lubrication systems
    • F16N7/40—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated with a separate pump; Central lubrication systems in a closed circulation system

Definitions

  • ABSTRACT Freeh Assistant Examiner-Richard Sher Attorney, Agent, or Firm-Phillips, Moore, Weissenberger, Lempio & Strabala [57] ABSTRACT
  • a bidirectional pump circulates fluid through a common filter to two lubrication circuits individually having a sump, an inlet line to the pump, a system to be lubricated, and a return path to the sump.
  • a checktype shuttle valve causes fluid to be discharged through either of two outlet paths according to the di rection of pump rotation by way of a filter and thence to the two circuits.
  • a dual check valve is provided in place of the shuttle valve.
  • the present invention is directed to liquid pump systems.
  • the invention is directed to plural lubrication systems having bidirectional pumps.
  • the invention takes the form of a system having a bidirectional pump for pumping fluid from a pair of spaced-apart sumps and thence through a shuttle-type check valve, and a pair of circuits including lubricant systems before returning to sump.
  • the check valve serves to direct fluid to the lubricant systems in either pump flow direction.
  • a pair of spaced-apart sumps ensures self-balancing if the flow requirements of each circuit are unequal and/or one pump inlet line is not fully immersed in fluid because of the tilting of the vehicle or associated machinery. Fluid distribution is continued to both circuits from the other of the pump inlet lines, thus provides self-balancing of the fluid levels in the two circuits.
  • Flow control orifices in the circuits provide for proportional flow to each lubricant system.
  • FIG. 1 is an overall schematic diagram illustrating the features of the present invention.
  • FIG. 2 is a view of an alternate embodiment of the check valve of the system of FIG. 1.
  • FIG. 1 there is illustrated generally a dual lubrication system 10 incorporating a bidirectional, gear-type pump 12, a filter l4, and first and second horizontally spaced-apart sumps 16 and 18 at the same vertical level, respectively.
  • the pump includes a pair of intermeshing gears 20 and 22 which are driven by a reversible mechanism such as associated with a final drive of a conventional vehicle (not shown).
  • gears When these gears are driven in the clockwise and counterclockwise directions as shown by the solidand broken-line arrows, respectively, they draw fluid upwardly from the first and second sumps through a first inlet conduit 24 to a first cavity 26, and a second inlet conduit 28 into a second pump cavity 30. Fluid from the first and second cavities is drawn centrally inwardly and upwardly with rotation of the gears, as shown by the solid arrows, to a first chamber 32 and thence to a first discharge or outlet conduit 34. Conversely, if the gears 20 and 22 are respectively driven in the counterclockwise and clockwise directions shown by the broken arrows, fluid in the cavities 26 and 30 is pumped to a second chamber 36 and to a second discharge or outlet conduit 38.
  • the first and second discharge conduits 34 and 38 are disposed on opposite ends of and communicate with a shuttle-type check valve 40.
  • a filter inlet passage 42 medially communicates valve 411 with filter 14.
  • a ball 44 is urged rightwardly against a seat 46 to block flow of pressurized lubricant to the conduit 38 and allow free travel thereof to the filter inlet passage.
  • the pump is driven in reverse in the direction of the broken arrows and the second discharge line 38 is pressurized, the ball 44 is moved leftwardly against the seat 48 to block the pressurized fluid from the conduit 34.
  • fluid flows through the filter inlet passage 42, the filter 14, a filter outlet passage 50, and to a first branch conduit 52 and a second branch conduit 54.
  • the divided fiow of fluid in the branch conduits 52 and 54 is proportioned by a first flow control orifice 56 associated with a first lubrication system 58, and a second flow control orifice 60 associated with a second lubrication system 62. While fluid from the first lubrication system 58 is delivered to the first sump 16 through a schematically represented first return path or conduit 64, fluid from the second lubricant system 62 is delivered to the second sump 18 through a similar second return path or conduit 66.
  • a first lubrication circuit shown generally by the reference numeral 68 is defined by the sump 16, inlet conduit 24, pump 12, filter l4, branch conduit 52, flow control orifice 56, lubrication system 58, and return conduit 64.
  • a second lubrication circuit 70 is similarly defined by the sump l8, inlet conduit 28, pump 12, filter 14, branch conduit 54,
  • an inlet port 72 or the first inlet conduit 24 or an inlet port 74 of the second inlet conduit 28 is uncovered from the fluid contained in the sumps 16 and 18, respectively, due to disproportionate flow distribution such as may occur due to tilting of the vehicle or associated mechanism containing the subject dual lubrication circuits, the opposite inlet port 74 or 72 will still serve to distribute fluid to both the lubrication circuits 68 and 70.
  • the flow-proportioning control orifices 56 and 60 will proportionately distribute the fluid from the pump 12 and, entering one of the intake conduits 24 or 28 to both sumps 16 and 18, the system will be self-balancing.
  • a dual check valve system 76 may be alternately used in place of the shuttle-type check valve 40 in FIG. 1.
  • a first check valve 78 is opened and a second check valve 80 is closed when outlet conduit 34 is pressurized allowing flow of fluid to filter inlet passage 42, while blocking the evacuated conduit 38.
  • the second check valve 80 is opened and the first check valve 78 is closed, allowing fluid passage to the inlet passage 42 in a manner substantially similar to that of the preferred embodiment, Springs 82, 84 normally bias balls 86, 88, against seats 90, 92, respectively.
  • a bidirectional pump including a housing defining first and second chambers
  • first and second separate lubricant systems intercommunicating with said first and second sumps, respectively
  • check valve means comprising a check valve
  • said check valve means operable to direct fluid flow to said first and second lubricant systems in either flow direction of the bidirectional pump whereby fluid supply is maintained to said first and second fluid systems regardless of pump flow direction and tilting of said system which causes disproportionate flow distribution, means communicating said first and second lubricant systems with said first and second sumps, respectively, for returning fluid thereto, and,
  • flow control means intermediate said check valve means and said lubricant systems, for proportioning flow between said first and second lubricant systems.
  • check valve comprises a check valve housing having a pair of seats and a ball adapted for movement within said check valve housing and for sealing engagement with said seats.
  • check valve comprises a first check valve communicating with said first discharge conduit
  • said first check valve comprises a first ball and spring means biasing said first ball against a first seat.
  • said second check valve comprises a second ball and spring means biasing said second ball against a second seat.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • General Details Of Gearings (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
  • Details Of Reciprocating Pumps (AREA)
US00351479A 1973-04-16 1973-04-16 Bidirectional pump system having plural lubrication circuits Expired - Lifetime US3857461A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US00351479A US3857461A (en) 1973-04-16 1973-04-16 Bidirectional pump system having plural lubrication circuits
JP48102267A JPS507971A (fr) 1973-04-16 1973-09-12
FR7411504A FR2225687B1 (fr) 1973-04-16 1974-03-29
GB1458374A GB1458285A (en) 1973-04-16 1974-04-02 Bidirectional pump system having plural lubrication circuits

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00351479A US3857461A (en) 1973-04-16 1973-04-16 Bidirectional pump system having plural lubrication circuits

Publications (1)

Publication Number Publication Date
US3857461A true US3857461A (en) 1974-12-31

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ID=23381104

Family Applications (1)

Application Number Title Priority Date Filing Date
US00351479A Expired - Lifetime US3857461A (en) 1973-04-16 1973-04-16 Bidirectional pump system having plural lubrication circuits

Country Status (4)

Country Link
US (1) US3857461A (fr)
JP (1) JPS507971A (fr)
FR (1) FR2225687B1 (fr)
GB (1) GB1458285A (fr)

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3994634A (en) * 1975-10-28 1976-11-30 Rockwell International Corporation Reversible lubricant pump
US4040505A (en) * 1975-10-29 1977-08-09 Fiat-Allis Construction Machinery, Inc. Lubrication system for earth moving equipment
US4153141A (en) * 1977-06-20 1979-05-08 General Electric Company Auxiliary oil supply system
US4728260A (en) * 1986-04-30 1988-03-01 Maruko Keihouki Kabushiki Kaisha Direction-selectable sending-out pump
US6814409B2 (en) 2001-04-12 2004-11-09 A-Dec, Inc. Hydraulic drive system
US20080083572A1 (en) * 2006-10-04 2008-04-10 Toyota Jidosha Kabushiki Kaisha Wheel assembly with in-wheel motor
US20100028187A1 (en) * 2006-03-29 2010-02-04 Peter Mastalir Supplement lubricant free pneumatic motor
US20100200072A1 (en) * 2007-07-30 2010-08-12 Cooltech Applications S.A.S. Gear pump and method of delivering fluid using such a pump
US20130121854A1 (en) * 2011-11-10 2013-05-16 Gkn Walterscheid Gmbh Gearbox
US20130233107A1 (en) * 2010-09-02 2013-09-12 Kaspar Freiherr von Wilmowsky Gear Train
US20140165530A1 (en) * 2012-12-19 2014-06-19 United Technologies Corporation Bi-Directional Auxiliary Lubrication System
CN104033720A (zh) * 2014-05-14 2014-09-10 辽宁惠通润滑设备制造有限公司 智能控制润滑油泵
DE102014111133A1 (de) * 2014-08-05 2016-02-11 Robert Bosch Automotive Steering Gmbh Filterung für reversierbare Zahnradmaschine
DE102014016173A1 (de) * 2014-11-03 2016-05-04 Audi Ag Antriebseinrichtung für ein Kraftfahrzeug
US20160341124A1 (en) * 2015-05-19 2016-11-24 Rolls-Royce Corporation Lubrication system for a reconfigurable gas turbine engine
US20170152935A1 (en) * 2015-12-01 2017-06-01 The Boeing Company Reconfigurable Lubrication System for Tiltrotor Transmission
EP3215743B1 (fr) * 2014-11-03 2018-10-24 Continental Automotive GmbH Pompe à déplacement positif
DE102019210512A1 (de) * 2019-07-17 2021-01-21 Zf Friedrichshafen Ag Getriebe, insbesondere Kraftfahrzeuggetriebe
US10905973B2 (en) * 2013-02-27 2021-02-02 C.C. Jensen A/S Device for processing a liquid under vacuum pressure

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4631009A (en) * 1984-07-18 1986-12-23 Sundstrand Corporation Lubrication scavenge system
AT413203B (de) * 2002-02-26 2005-12-15 Bauer & Co Gmbh Reform Werke Anordnung von zwei oder mehreren eigenständigen getriebeeinheiten
CN101907108A (zh) * 2010-07-29 2010-12-08 南通航海机械集团有限公司 微型动力单元
CN103437997A (zh) * 2013-05-22 2013-12-11 麦特汽车服务股份有限公司 一种汽车变速箱检测清洗设备的齿轮泵降噪实现方法
JP6470613B2 (ja) * 2015-03-30 2019-02-13 株式会社Ｓｕｂａｒｕ オイルポンプ

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1000188A (en) * 1908-03-07 1911-08-08 Alfred B Morse Automatic lubricator for motor-car engines.
US1355229A (en) * 1917-01-27 1920-10-12 John D Jones Lubricating system for explosive-engines
US1595381A (en) * 1924-05-07 1926-08-10 Niels A Christensen Oil pump
US1687523A (en) * 1926-02-15 1928-10-16 Edwin G Staude Fluid-pressure pump for power-propelled vehicle-controlling means
US2778316A (en) * 1952-02-12 1957-01-22 Hiram H Haight Reversible pump with automatic valving
CA653628A (en) * 1962-12-04 Beribisky, Vladimir Gear pump or motor
US3767014A (en) * 1972-05-26 1973-10-23 Allis Chalmers Filter system for crawler tractor final drives

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA653628A (en) * 1962-12-04 Beribisky, Vladimir Gear pump or motor
US1000188A (en) * 1908-03-07 1911-08-08 Alfred B Morse Automatic lubricator for motor-car engines.
US1355229A (en) * 1917-01-27 1920-10-12 John D Jones Lubricating system for explosive-engines
US1595381A (en) * 1924-05-07 1926-08-10 Niels A Christensen Oil pump
US1687523A (en) * 1926-02-15 1928-10-16 Edwin G Staude Fluid-pressure pump for power-propelled vehicle-controlling means
US2778316A (en) * 1952-02-12 1957-01-22 Hiram H Haight Reversible pump with automatic valving
US3767014A (en) * 1972-05-26 1973-10-23 Allis Chalmers Filter system for crawler tractor final drives

Cited By (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2329462A1 (fr) * 1975-10-28 1977-05-27 Rockwell International Corp Dispositif et pompe reversible de lubrification, notamment pour vehicule a deux essieux moteurs
US3994634A (en) * 1975-10-28 1976-11-30 Rockwell International Corporation Reversible lubricant pump
US4040505A (en) * 1975-10-29 1977-08-09 Fiat-Allis Construction Machinery, Inc. Lubrication system for earth moving equipment
US4153141A (en) * 1977-06-20 1979-05-08 General Electric Company Auxiliary oil supply system
US4728260A (en) * 1986-04-30 1988-03-01 Maruko Keihouki Kabushiki Kaisha Direction-selectable sending-out pump
US6814409B2 (en) 2001-04-12 2004-11-09 A-Dec, Inc. Hydraulic drive system
US20100028187A1 (en) * 2006-03-29 2010-02-04 Peter Mastalir Supplement lubricant free pneumatic motor
US20080083572A1 (en) * 2006-10-04 2008-04-10 Toyota Jidosha Kabushiki Kaisha Wheel assembly with in-wheel motor
US8261866B2 (en) * 2006-10-04 2012-09-11 Toyota Jidosha Kabushiki Kaisha Wheel assembly with in-wheel motor
US20100200072A1 (en) * 2007-07-30 2010-08-12 Cooltech Applications S.A.S. Gear pump and method of delivering fluid using such a pump
US8348637B2 (en) * 2007-07-30 2013-01-08 Cooltech Applications S.A.S. Gear pump and method of delivering fluid using such a pump
US20130233107A1 (en) * 2010-09-02 2013-09-12 Kaspar Freiherr von Wilmowsky Gear Train
DE102011055194B4 (de) * 2011-11-10 2018-01-18 Gkn Walterscheid Gmbh Hydraulikpumpenanordnung
DE102011055194A1 (de) * 2011-11-10 2013-05-16 Gkn Walterscheid Gmbh Hydraulikpumpenanordnung
US20130121854A1 (en) * 2011-11-10 2013-05-16 Gkn Walterscheid Gmbh Gearbox
US9765643B2 (en) * 2012-12-19 2017-09-19 United Technologies Corporation Bi-directional auxiliary lubrication system
US20140165530A1 (en) * 2012-12-19 2014-06-19 United Technologies Corporation Bi-Directional Auxiliary Lubrication System
US10905973B2 (en) * 2013-02-27 2021-02-02 C.C. Jensen A/S Device for processing a liquid under vacuum pressure
CN104033720A (zh) * 2014-05-14 2014-09-10 辽宁惠通润滑设备制造有限公司 智能控制润滑油泵
DE102014111133A1 (de) * 2014-08-05 2016-02-11 Robert Bosch Automotive Steering Gmbh Filterung für reversierbare Zahnradmaschine
DE102014016173A1 (de) * 2014-11-03 2016-05-04 Audi Ag Antriebseinrichtung für ein Kraftfahrzeug
EP3215743B1 (fr) * 2014-11-03 2018-10-24 Continental Automotive GmbH Pompe à déplacement positif
US10451060B2 (en) 2014-11-03 2019-10-22 Continental Automotive Gmbh Positive displacement pump having multiple operating stages
US10480637B2 (en) 2014-11-03 2019-11-19 Audi Ag Lubrication system for a drive device of a motor vehicle
US10260420B2 (en) * 2015-05-19 2019-04-16 Rolls-Royce Corporation Lubrication system for a reconfigurable gas turbine engine
US20160341124A1 (en) * 2015-05-19 2016-11-24 Rolls-Royce Corporation Lubrication system for a reconfigurable gas turbine engine
US20170152935A1 (en) * 2015-12-01 2017-06-01 The Boeing Company Reconfigurable Lubrication System for Tiltrotor Transmission
US10655728B2 (en) * 2015-12-01 2020-05-19 The Boeing Company Reconfigurable lubrication system for tiltrotor transmission
DE102019210512A1 (de) * 2019-07-17 2021-01-21 Zf Friedrichshafen Ag Getriebe, insbesondere Kraftfahrzeuggetriebe

Also Published As

Publication number Publication date
JPS507971A (fr) 1975-01-27
GB1458285A (en) 1976-12-15
FR2225687A1 (fr) 1974-11-08
FR2225687B1 (fr) 1977-10-21

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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