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IT1193521B - HYDRAULIC CIRCUIT OF A TRACTOR FOR THE CONTROL OF ACTUATORS - Google Patents

HYDRAULIC CIRCUIT OF A TRACTOR FOR THE CONTROL OF ACTUATORS

Info

Publication number
IT1193521B
IT1193521B IT20329/80A IT2032980A IT1193521B IT 1193521 B IT1193521 B IT 1193521B IT 20329/80 A IT20329/80 A IT 20329/80A IT 2032980 A IT2032980 A IT 2032980A IT 1193521 B IT1193521 B IT 1193521B
Authority
IT
Italy
Prior art keywords
tractor
actuators
control
hydraulic circuit
hydraulic
Prior art date
Application number
IT20329/80A
Other languages
Italian (it)
Other versions
IT8020329A0 (en
Inventor
John Stephen Marshall
Original Assignee
Same Spa
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 Same Spa filed Critical Same Spa
Priority to IT20329/80A priority Critical patent/IT1193521B/en
Publication of IT8020329A0 publication Critical patent/IT8020329A0/en
Priority to DE19813107146 priority patent/DE3107146A1/en
Priority to GB8106334A priority patent/GB2070693A/en
Priority to ES499979A priority patent/ES499979A0/en
Priority to FR8104093A priority patent/FR2477083A1/en
Application granted granted Critical
Publication of IT1193521B publication Critical patent/IT1193521B/en

Links

Classifications

    • 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
    • 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
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2221—Control of flow rate; Load sensing arrangements
    • E02F9/2239—Control of flow rate; Load sensing arrangements using two or more pumps with cross-assistance
    • 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
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2278—Hydraulic circuits
    • E02F9/2292—Systems with 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
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/20576—Systems with pumps with multiple 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
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/265—Control of 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
    • F15B2211/30—Directional control
    • F15B2211/305—Directional control characterised by the type of valves
    • F15B2211/30505—Non-return valves, i.e. check valves
    • 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
    • F15B2211/40—Flow control
    • F15B2211/405—Flow control characterised by the type of flow control means or valve
    • F15B2211/40515—Flow control characterised by the type of flow control means or valve with variable throttles or orifices
    • 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
    • F15B2211/40—Flow control
    • F15B2211/415—Flow control characterised by the connections of the flow control means in the circuit
    • F15B2211/41563—Flow control characterised by the connections of the flow control means in the circuit being connected to a pressure source and a 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
    • F15B2211/40—Flow control
    • F15B2211/45—Control of bleed-off flow, e.g. control of bypass flow 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
    • F15B2211/55—Pressure control for limiting a pressure up to a maximum pressure, e.g. by using a pressure relief valve

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Lifting Devices For Agricultural Implements (AREA)
IT20329/80A 1980-03-03 1980-03-03 HYDRAULIC CIRCUIT OF A TRACTOR FOR THE CONTROL OF ACTUATORS IT1193521B (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
IT20329/80A IT1193521B (en) 1980-03-03 1980-03-03 HYDRAULIC CIRCUIT OF A TRACTOR FOR THE CONTROL OF ACTUATORS
DE19813107146 DE3107146A1 (en) 1980-03-03 1981-02-26 HYDRAULIC CONTROL DEVICE FOR TRACTOR DRIVES
GB8106334A GB2070693A (en) 1980-03-03 1981-02-27 Hydraulic circuitry for a farm tractor, to control the implement actuators
ES499979A ES499979A0 (en) 1980-03-03 1981-03-02 IMPROVEMENTS IN HYDRAULIC CIRCUITS ASSOCIATED WITH TRACTORS
FR8104093A FR2477083A1 (en) 1980-03-03 1981-03-02 HYDRAULIC CIRCUIT EQUIPPING A TRACTOR FOR ACTUATING CYLINDERS

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT20329/80A IT1193521B (en) 1980-03-03 1980-03-03 HYDRAULIC CIRCUIT OF A TRACTOR FOR THE CONTROL OF ACTUATORS

Publications (2)

Publication Number Publication Date
IT8020329A0 IT8020329A0 (en) 1980-03-03
IT1193521B true IT1193521B (en) 1988-07-08

Family

ID=11165773

Family Applications (1)

Application Number Title Priority Date Filing Date
IT20329/80A IT1193521B (en) 1980-03-03 1980-03-03 HYDRAULIC CIRCUIT OF A TRACTOR FOR THE CONTROL OF ACTUATORS

Country Status (5)

Country Link
DE (1) DE3107146A1 (en)
ES (1) ES499979A0 (en)
FR (1) FR2477083A1 (en)
GB (1) GB2070693A (en)
IT (1) IT1193521B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3150248C2 (en) * 1981-12-18 1986-10-30 Xaver Fendt & Co, 8952 Marktoberdorf Hydraulic system
FI823729L (en) * 1982-11-01 1984-05-02 Valmet Oy HYDRAULIKSYSTEM FOER EN TRAKTOR ELLER LIKNANDE
EP2330304B1 (en) * 2009-11-30 2012-07-18 HAWE Hydraulik SE Hydraulic assembly

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3171247A (en) * 1962-05-24 1965-03-02 Webster Electric Co Inc Motor vehicle and hydraulic system
US3540218A (en) * 1969-05-12 1970-11-17 Gen Signal Corp Hydraulic supply system with two pumping units
US3841093A (en) * 1972-07-24 1974-10-15 Sargeant Ind Inc Noise reduction apparatus and method
DE2341892C3 (en) * 1973-08-18 1978-09-14 Eaton Gmbh, 5620 Velbert Hydraulic servo system with two pumps and several hydraulic motors
DE2445979A1 (en) * 1973-10-01 1975-04-10 Sargent Industries CONTROL DEVICE FOR SEVERAL MOTOR-DRIVEN PUMPS

Also Published As

Publication number Publication date
GB2070693A (en) 1981-09-09
DE3107146A1 (en) 1981-12-17
ES8206775A1 (en) 1982-09-01
FR2477083A1 (en) 1981-09-04
IT8020329A0 (en) 1980-03-03
ES499979A0 (en) 1982-09-01

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