GB2395769C - Cavitation prevention system of hydraulic travelling vehicle - Google Patents

Cavitation prevention system of hydraulic travelling vehicle

Info

Publication number
GB2395769C
GB2395769C GB0227637A GB0227637A GB2395769C GB 2395769 C GB2395769 C GB 2395769C GB 0227637 A GB0227637 A GB 0227637A GB 0227637 A GB0227637 A GB 0227637A GB 2395769 C GB2395769 C GB 2395769C
Authority
GB
United Kingdom
Prior art keywords
prevention system
travelling vehicle
cavitation prevention
hydraulic travelling
hydraulic
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 - Fee Related
Application number
GB0227637A
Other versions
GB0227637D0 (en
GB2395769A (en
GB2395769B (en
Inventor
Masaaki Gen Ji
Eric Jacques
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.)
Komatsu Ltd
Original Assignee
Komatsu Ltd
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 Komatsu Ltd filed Critical Komatsu Ltd
Priority to GB0227637A priority Critical patent/GB2395769C/en
Publication of GB0227637D0 publication Critical patent/GB0227637D0/en
Priority to JP2003385171A priority patent/JP4190397B2/en
Priority to DE10354193A priority patent/DE10354193B4/en
Priority to CNB2003101180520A priority patent/CN100562677C/en
Publication of GB2395769A publication Critical patent/GB2395769A/en
Application granted granted Critical
Publication of GB2395769B publication Critical patent/GB2395769B/en
Publication of GB2395769C publication Critical patent/GB2395769C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/38—Control of exclusively fluid gearing
    • F16H61/40—Control of exclusively fluid gearing hydrostatic
    • F16H61/4183—Preventing or reducing vibrations or noise, e.g. avoiding cavitations
    • 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
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/38—Control of exclusively fluid gearing
    • F16H61/40—Control of exclusively fluid gearing hydrostatic
    • F16H61/44—Control of exclusively fluid gearing hydrostatic with more than one pump or motor in operation
    • 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
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/38—Control of exclusively fluid gearing
    • F16H61/40—Control of exclusively fluid gearing hydrostatic
    • F16H61/4061—Control related to directional control valves, e.g. change-over valves, for crossing the feeding conduits
    • 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
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/38—Control of exclusively fluid gearing
    • F16H61/40—Control of exclusively fluid gearing hydrostatic
    • F16H61/42—Control of exclusively fluid gearing hydrostatic involving adjustment of a pump or motor with adjustable output or capacity
    • 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
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/38—Control of exclusively fluid gearing
    • F16H61/40—Control of exclusively fluid gearing hydrostatic
    • F16H61/44—Control of exclusively fluid gearing hydrostatic with more than one pump or motor in operation
    • F16H61/448—Control circuits for tandem pumps or motors

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Control Of Fluid Gearings (AREA)
  • Motor Power Transmission Devices (AREA)
  • Operation Control Of Excavators (AREA)
GB0227637A 2002-11-27 2002-11-27 Cavitation prevention system of hydraulic travelling vehicle Expired - Fee Related GB2395769C (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB0227637A GB2395769C (en) 2002-11-27 2002-11-27 Cavitation prevention system of hydraulic travelling vehicle
JP2003385171A JP4190397B2 (en) 2002-11-27 2003-11-14 Cavitation prevention system for hydraulic vehicles
DE10354193A DE10354193B4 (en) 2002-11-27 2003-11-20 Cavitation prevention system of a hydraulic vehicle
CNB2003101180520A CN100562677C (en) 2002-11-27 2003-11-24 Locking system is prevented in the cavitation erosion of oil pressure moving vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0227637A GB2395769C (en) 2002-11-27 2002-11-27 Cavitation prevention system of hydraulic travelling vehicle

Publications (4)

Publication Number Publication Date
GB0227637D0 GB0227637D0 (en) 2003-01-08
GB2395769A GB2395769A (en) 2004-06-02
GB2395769B GB2395769B (en) 2006-02-08
GB2395769C true GB2395769C (en) 2006-02-08

Family

ID=9948591

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0227637A Expired - Fee Related GB2395769C (en) 2002-11-27 2002-11-27 Cavitation prevention system of hydraulic travelling vehicle

Country Status (4)

Country Link
JP (1) JP4190397B2 (en)
CN (1) CN100562677C (en)
DE (1) DE10354193B4 (en)
GB (1) GB2395769C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103261534A (en) * 2010-12-14 2013-08-21 卡特彼勒公司 Closed loop drive circuit with open circuit pump assist for high speed travel

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE378533T1 (en) * 2002-12-27 2007-11-15 Hitachi Construction Machinery HYDRAULIC OPERATED VEHICLE
JP4741606B2 (en) * 2005-12-27 2011-08-03 日立建機株式会社 Pump control device for hydraulic working machine, pump control method, and construction machine
JP2011075045A (en) * 2009-09-30 2011-04-14 Hitachi Constr Mach Co Ltd Hydraulic controller for hydraulic working machine
CN104141643B (en) * 2013-05-10 2018-10-30 林德液压两合公司 Band is useful for the driving system of the hydrostatic transmissions mechanism of driving speed changer

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE792617A (en) * 1971-12-13 1973-06-12 Caterpillar Tractor Co Hydraulic circuit for an excavator.
DE4407282C2 (en) * 1994-03-04 1996-04-18 Hydromatik Gmbh Hydrostatic drive
JPH11218102A (en) * 1997-11-11 1999-08-10 Komatsu Ltd Pressurized oil supply device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103261534A (en) * 2010-12-14 2013-08-21 卡特彼勒公司 Closed loop drive circuit with open circuit pump assist for high speed travel

Also Published As

Publication number Publication date
JP2004176920A (en) 2004-06-24
CN100562677C (en) 2009-11-25
GB0227637D0 (en) 2003-01-08
JP4190397B2 (en) 2008-12-03
DE10354193A1 (en) 2004-06-17
GB2395769A (en) 2004-06-02
GB2395769B (en) 2006-02-08
DE10354193B4 (en) 2007-06-06
CN1509916A (en) 2004-07-07

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Legal Events

Date Code Title Description
COOA Change in applicant's name or ownership of the application

Owner name: KOMATSU LTD

Free format text: FORMER APPLICANT(S): KOMATSU UK LIMITED

727A Application for amendment of specification now open to opposition (sect. 27/1977)
727B Case decided by the comptroller ** specification amended (sect. 27/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20131127