ES487486A1 - Perfeccionamientos en los sistemas de control para transmi- siones hidrostaticas - Google Patents

Perfeccionamientos en los sistemas de control para transmi- siones hidrostaticas

Info

Publication number
ES487486A1
ES487486A1 ES487486A ES487486A ES487486A1 ES 487486 A1 ES487486 A1 ES 487486A1 ES 487486 A ES487486 A ES 487486A ES 487486 A ES487486 A ES 487486A ES 487486 A1 ES487486 A1 ES 487486A1
Authority
ES
Spain
Prior art keywords
condition
valve
strokers
control valve
auxiliary
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
Application number
ES487486A
Other languages
English (en)
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.)
Eaton Corp
Original Assignee
Eaton Corp
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 Eaton Corp filed Critical Eaton Corp
Publication of ES487486A1 publication Critical patent/ES487486A1/es
Expired 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
    • F16H61/46—Automatic regulation in accordance with output requirements
    • F16H61/465—Automatic regulation in accordance with output requirements for achieving a target input speed
    • 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
    • F16H61/46—Automatic regulation in accordance with output requirements

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Fluid Gearings (AREA)
  • Control Of Positive-Displacement Pumps (AREA)

Abstract

Perfeccionamientos en los sistemas de control para transmisiones hidrostáticos, y mas concretamente en los sistemas de control que pueden funcionar para controlar la pérdida de velocidad de un motor, del tipo que comprenden una bomba de desplazamiento variable (10) accionada por un motor; medios accionables por fluido (28, 30) para variar el desplazamiento de la bomba, definiendo los medios accionables por fluido (28, 30) para variar el desplazamiento de la bomba, definiendo los medios accionables por fluido una primera y una segunda cámaras de presión de fluido para variar el desplazamiento de la bomba en una primera y una segunda direcciones opuestas; una fuente (22) de fluido de control a presión para accionar los medios accionables por fluidos; medios de conducto de suministro (36) que comunican para el paso de fluido con la fuente de la fluido de control, medios de control principales (34) accionables para controlar el flujo de fluido de control desde los medios de conducto de suministro a una de las primeras y segundas cámaras de presión de fluido (38) y de los segundos medios de fluido de control desde la otra de las primeras y segundas cámaras de fluido a un depósito, caracterizados por comprender: a)medios de válvula de control auxiliar (44) que definen medios de conducto de control (98, 100, 102) accionables para comunicar fluido de control desde dicho uno de los primeros y segundos medios de conductos de fluido al citado otro de los primeros y segundos medios de conducto de fluido; b) dichos medios de válvula de control auxiliar incluyen una válvula electrohidráulica de apertura y cierre (46) dispuesta en dichos medios de conducto de control para impedir la comunicación de fluido a su través en respuesta a una señal de entrada eléctrica (48, 50) en una condición, y para permitir la comunicación de fluido a su través en respuesta a una señal de entrada eléctrica en otra condición; c) medios lógicos de control (52) accionables en respuesta a variaciones en una condición de entradas (58) para alternar dicha señal de entrada eléctrica entre dichas una y otra condiciones con un ciclo de servicio (126) determinado por la desviación de dicha condición de entrada desde una condición de funcionamiento normal (60).
ES487486A 1979-01-08 1980-01-07 Perfeccionamientos en los sistemas de control para transmi- siones hidrostaticas Expired ES487486A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/001,809 US4274257A (en) 1979-01-08 1979-01-08 Anti-stall controller

Publications (1)

Publication Number Publication Date
ES487486A1 true ES487486A1 (es) 1980-09-16

Family

ID=21697931

Family Applications (1)

Application Number Title Priority Date Filing Date
ES487486A Expired ES487486A1 (es) 1979-01-08 1980-01-07 Perfeccionamientos en los sistemas de control para transmi- siones hidrostaticas

Country Status (8)

Country Link
US (1) US4274257A (es)
EP (1) EP0022818B1 (es)
JP (1) JPS55501108A (es)
CA (1) CA1133357A (es)
DE (1) DE2965474D1 (es)
ES (1) ES487486A1 (es)
IT (1) IT1193883B (es)
WO (1) WO1980001400A1 (es)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT8083478A0 (it) * 1979-12-10 1980-12-09 Mervyn Roy Marsh Dispositivo idraulico funzionante come pompa rotativa o motore rotativo a tenuta rotante.
DK147290C (da) * 1980-11-04 1984-12-10 Smidth & Co As F L Drev for en roterende tromle
US4458581A (en) * 1981-05-04 1984-07-10 Edward D. Paley Control device for fluid energy translators
US4542802A (en) * 1982-04-02 1985-09-24 Woodward Governor Company Engine and transmission control system for combines and the like
US4494911A (en) * 1983-04-29 1985-01-22 General Signal Corporation Piston pump servo control
WO1985001326A1 (en) * 1983-09-16 1985-03-28 Sundstrand Corporation Ram air turbine hydraulic power system
US4637781A (en) * 1984-03-30 1987-01-20 Kabushiki Kaisha Komatsu Seisakusho Torque regulating system for fluid operated pump displacement control systems
CA1241214A (en) * 1984-10-30 1988-08-30 Shinya Nakamura Control system and method for controllable output type hydraulic fluid pump of automatic transmission providing decreased pump output in association with the engine starting condition
DE3517104A1 (de) * 1985-05-11 1986-11-13 Mannesmann Rexroth GmbH, 8770 Lohr Antriebssystem mit einer verstellbaren hydrostatischen maschine
US4655689A (en) * 1985-09-20 1987-04-07 General Signal Corporation Electronic control system for a variable displacement pump
CN1010794B (zh) * 1986-01-11 1990-12-12 日立建机株式会社 液压泵输入功率控制系统
DE3853344T2 (de) * 1987-11-28 1995-11-09 Hitachi Construction Machinery Sicherheitsvorrichtung für einen geschlossenen hydraulischen Kreislauf.
DE3911708C2 (de) * 1989-04-10 1996-11-14 Linde Ag Verfahren zum Betreiben einer Antriebseinheit
JPH0374581A (ja) * 1989-08-17 1991-03-29 Toyota Autom Loom Works Ltd 可変容量型油圧ポンプの駆動負荷制御装置
US5017094A (en) * 1990-03-12 1991-05-21 Eaton Corporation Solenoid valve control system for hydrostatic transmission
US5108267A (en) * 1991-06-17 1992-04-28 Eaton Corporation Dual-mode control for hydrostatic transmission
US5330394A (en) * 1991-07-09 1994-07-19 Hydro-Gear Limited Partnership Rider transaxle having improved hydrostatic transmission
DE4303243C2 (de) * 1993-02-04 1995-04-13 Linde Ag Verfahren zum Abgleich der Kennlinien von stufenlos verstellbaren Getrieben eines Fahrzeugs mit beidseitigem Fahrantrieb
US5546752A (en) * 1995-02-23 1996-08-20 Hydro-Gear Ltd. Partnership Combination valve including improved neutral valve for use in hydrostatic transmission
US5628189A (en) * 1995-02-24 1997-05-13 Hydro-Gear Limited Partnership Charge pump for axle driving apparatus including hydrostatic transmission
US6993906B1 (en) 1995-02-24 2006-02-07 Hydro-Gear Limited Partnership Hydraulic drive apparatus
US5819535A (en) 1995-02-24 1998-10-13 Hydro-Gear Limited Partnership Charge pump and auxiliary pump for hydrostatic transmissions and integrated hydrostatic transaxles
US5555727A (en) * 1995-02-24 1996-09-17 Hydro-Gear Auxiliary pumps for axle driving apparatus including hydrostatic transmission
US5933795A (en) * 1996-03-19 1999-08-03 Sauer Inc. Speed sensing device
EP0796999B1 (en) * 1996-03-19 2001-09-26 Eaton Corporation Variable displacement pump and remote control system therefor
US5996342A (en) * 1998-06-23 1999-12-07 Case Corporation Hydrostatic drive train controller
US6305419B1 (en) 2000-07-14 2001-10-23 Clark Equipment Company Variable pilot pressure control for pilot valves
JP4562885B2 (ja) * 2000-09-01 2010-10-13 愛三工業株式会社 双方向型パイロット式電磁流路開閉弁と双方向型配管
US20060198736A1 (en) * 2005-03-01 2006-09-07 Caterpillar Inc. Pump control system for variable displacement pump
US7296594B1 (en) 2005-03-22 2007-11-20 Hydro-Gear Limited Partnership Combination check valve and neutral valve assembly for use in a hydraulic component
KR100655329B1 (ko) * 2005-12-13 2006-12-08 두산인프라코어 주식회사 엔진식 지게차의 주행속도 제한장치
EP2792797B1 (en) * 2011-12-13 2017-08-09 Yanmar Co., Ltd. Working vehicle
US9527511B2 (en) * 2012-10-02 2016-12-27 Caterpillar Inc. Powertrain stall engine speed control

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2587356A (en) * 1945-07-16 1952-02-26 Skinner Chuck Company Reversible valve structure
US2891577A (en) * 1956-06-18 1959-06-23 Gen Motors Corp Control device
US2970443A (en) * 1957-12-16 1961-02-07 Blackburn & Gen Aircraft Ltd Hydraulic powered flying controls
US2976685A (en) * 1958-12-02 1961-03-28 Dowty Hydraulic Units Ltd Variable hydraulic power transmissions
US3173243A (en) * 1963-08-19 1965-03-16 Sundstrand Corp Electric override
US3247669A (en) * 1964-04-23 1966-04-26 Sundstrand Corp Hydrostatic transmission
US3463087A (en) * 1967-10-16 1969-08-26 Towmotor Corp Control response valve for hydrostatic transmission
US3540462A (en) * 1968-08-02 1970-11-17 Avco Corp Miniaturized flow control valve
US3572213A (en) * 1969-05-12 1971-03-23 Eaton Yale & Towne Hydrostatic control system
US3608431A (en) * 1969-07-14 1971-09-28 Lummus Industries Control system for the ram of vertically disposed fluid pressure cylinders
US3606755A (en) * 1970-03-16 1971-09-21 Sperry Rand Corp Power transmission
US3783611A (en) * 1972-03-22 1974-01-08 Eaton Corp Hydrostatic transmission control system
US3795109A (en) * 1972-04-28 1974-03-05 Eaton Corp Hydrostatic transmission drive system
US3886741A (en) * 1973-05-03 1975-06-03 Eaton Corp Hydrostatic transmission anti-stall system
US3924410A (en) * 1974-10-02 1975-12-09 Eaton Corp Hydrostatic transmission control system
US3914938A (en) * 1974-08-20 1975-10-28 Eaton Corp Electrical hydrostatic transmission control system
US4050247A (en) * 1976-10-07 1977-09-27 Eaton Corporation Control valve for variable displacement pump or motor
US4116002A (en) * 1977-08-22 1978-09-26 Eaton Corporation Control for a variable displacement pump or motor
US4180979A (en) * 1978-06-22 1980-01-01 Eaton Corporation Anti-stall control for electrical hydrostatic transmission control system
US4187681A (en) * 1978-08-28 1980-02-12 Bucyrus-Erie Company Hydrostatic winch

Also Published As

Publication number Publication date
US4274257A (en) 1981-06-23
IT8019040A0 (it) 1980-01-04
JPS55501108A (es) 1980-12-11
EP0022818A4 (en) 1980-10-16
EP0022818A1 (en) 1981-01-28
IT1193883B (it) 1988-08-31
DE2965474D1 (en) 1983-07-07
EP0022818B1 (en) 1983-05-18
WO1980001400A1 (en) 1980-07-10
CA1133357A (en) 1982-10-12

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