ES485248A1 - Disposicion de valvulas, que trabaja automaticamente, para el reflujo controlado de fluido de reflujo previamente ten- sado de uno o varios receptores. - Google Patents

Disposicion de valvulas, que trabaja automaticamente, para el reflujo controlado de fluido de reflujo previamente ten- sado de uno o varios receptores.

Info

Publication number
ES485248A1
ES485248A1 ES485248A ES485248A ES485248A1 ES 485248 A1 ES485248 A1 ES 485248A1 ES 485248 A ES485248 A ES 485248A ES 485248 A ES485248 A ES 485248A ES 485248 A1 ES485248 A1 ES 485248A1
Authority
ES
Spain
Prior art keywords
unloading valve
charge
fluid
reservoir
return
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
ES485248A
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.)
Deere and Co
Original Assignee
Deere and 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 Deere and Co filed Critical Deere and Co
Publication of ES485248A1 publication Critical patent/ES485248A1/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
    • F16H61/4078—Fluid exchange between hydrostatic circuits and external sources or consumers
    • F16H61/4139—Replenishing or scavenging pumps, e.g. auxiliary charge pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
    • F15B11/17—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors using two or more pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/50—Pressure control
    • F15B2211/505—Pressure control characterised by the type of pressure control means
    • F15B2211/50509—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means
    • F15B2211/50536—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means using unloading valves controlling the supply pressure by diverting fluid to the return line
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/50—Pressure control
    • F15B2211/515—Pressure control characterised by the connections of the pressure control means in the circuit
    • F15B2211/5151—Pressure control characterised by the connections of the pressure control means in the circuit being connected to a pressure source and a directional control valve
    • F15B2211/5152—Pressure control characterised by the connections of the pressure control means in the circuit being connected to a pressure source and a directional control valve being connected to multiple pressure sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/61—Secondary circuits
    • F15B2211/613—Feeding circuits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/615—Filtering means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/71—Multiple output members, e.g. multiple hydraulic motors or cylinders

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Control Of Fluid Gearings (AREA)
  • Lifting Devices For Agricultural Implements (AREA)
  • Details Of Reciprocating Pumps (AREA)

Abstract

Disposición de válvulas, que trabaja automáticamente, para el reflujo controlado de fluido de reflujo previamente tensado de uno o varios receptores conectables a elección a través de válvulas de control, en la conducción de pretensión entre una bomba de pretensión, que aspira desde un colector, y el lado de aspiración de una bomba de trabajo que alimenta a los receptores en función del consumo de fluido de la bomba de trabajo, especialmente para los circuitos hidráulicos de tractores agrícolas, con una corredera de válvula desplazable en un taladro de válvula desplazable en un taladro de válvula de un bloque de válvula contra la pretensión por un lado de un resorte, la cual corredera tiene vástagos de control y ranuras de control, con un canal de conexión que intersecta al taladro de válvula para una conducción con colector y un canal principal que intersecta al taladro de válvula para la conexión de una conducción de comunicación que conduce hacia la conducción de pretensión.
ES485248A 1978-10-23 1979-10-22 Disposicion de valvulas, que trabaja automaticamente, para el reflujo controlado de fluido de reflujo previamente ten- sado de uno o varios receptores. Expired ES485248A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/953,579 US4209984A (en) 1978-10-23 1978-10-23 Hydraulic system with unloading valve assembly

Publications (1)

Publication Number Publication Date
ES485248A1 true ES485248A1 (es) 1980-06-16

Family

ID=25494213

Family Applications (1)

Application Number Title Priority Date Filing Date
ES485248A Expired ES485248A1 (es) 1978-10-23 1979-10-22 Disposicion de valvulas, que trabaja automaticamente, para el reflujo controlado de fluido de reflujo previamente ten- sado de uno o varios receptores.

Country Status (11)

Country Link
US (1) US4209984A (es)
JP (1) JPS5557704A (es)
AR (1) AR225155A1 (es)
AU (1) AU525749B2 (es)
CA (1) CA1107174A (es)
DE (1) DE2942650C2 (es)
ES (1) ES485248A1 (es)
FR (1) FR2439893A1 (es)
GB (1) GB2035517B (es)
IT (1) IT1203252B (es)
YU (1) YU257079A (es)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5168704A (en) * 1990-08-17 1992-12-08 General Electric Company Gas turbine engine fuel and actuation pressure pumping system
JPH0854058A (ja) * 1994-08-11 1996-02-27 Kanzaki Kokyukoki Mfg Co Ltd 車軸駆動装置
US5615553A (en) * 1995-06-28 1997-04-01 Case Corporation Hydraulic circuit with load sensing feature
DE19745118B4 (de) * 1997-10-11 2006-10-12 Wabco Gmbh & Co.Ohg Druckerzeugungsanlage
US20060127254A1 (en) * 2004-10-29 2006-06-15 Travis Bakker Hydraulic hand pump

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1402770A (fr) * 1964-08-06 1965-06-11 Lucas Industries Ltd Mécanisme de commande hydraulique
US3520322A (en) * 1965-08-30 1970-07-14 Ford Motor Co Fluid pressure control system
US3973398A (en) * 1975-09-12 1976-08-10 Deere & Company Hydraulic system and automatically shiftable direction control valve therefor
US4170113A (en) * 1978-03-24 1979-10-09 Deere & Company Hydraulic system with unloading valve assembly

Also Published As

Publication number Publication date
GB2035517A (en) 1980-06-18
AU5092579A (en) 1980-05-01
DE2942650A1 (de) 1980-04-24
JPS5557704A (en) 1980-04-28
AU525749B2 (en) 1982-11-25
US4209984A (en) 1980-07-01
CA1107174A (en) 1981-08-18
IT1203252B (it) 1989-02-15
FR2439893B1 (es) 1981-10-16
IT7950633A0 (it) 1979-10-22
AR225155A1 (es) 1982-02-26
DE2942650C2 (de) 1984-09-20
FR2439893A1 (fr) 1980-05-23
YU257079A (en) 1983-10-31
GB2035517B (en) 1982-11-17

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