ES426973A1 - Hydraulic circuit - Google Patents

Hydraulic circuit

Info

Publication number
ES426973A1
ES426973A1 ES426973A ES426973A ES426973A1 ES 426973 A1 ES426973 A1 ES 426973A1 ES 426973 A ES426973 A ES 426973A ES 426973 A ES426973 A ES 426973A ES 426973 A1 ES426973 A1 ES 426973A1
Authority
ES
Spain
Prior art keywords
constant
pumps
pressure
hand
control systems
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
ES426973A
Other languages
Spanish (es)
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.)
Poclain SA
Original Assignee
Poclain SA
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 Poclain SA filed Critical Poclain SA
Publication of ES426973A1 publication Critical patent/ES426973A1/en
Expired legal-status Critical Current

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
    • 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
    • F15B2211/30—Directional control
    • F15B2211/32—Directional control characterised by the type of actuation
    • F15B2211/327—Directional control characterised by the type of actuation electrically or electronically
    • 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
    • F15B2211/63—Electronic controllers
    • F15B2211/6303—Electronic controllers using input signals
    • F15B2211/632—Electronic controllers using input signals representing a flow rate
    • 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
    • F15B2211/665—Methods of control using electronic components
    • F15B2211/6652—Control of the pressure source, e.g. control of the swash plate angle
    • 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
    • F15B2211/665—Methods of control using electronic components
    • F15B2211/6654—Flow rate control
    • 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
    • F15B2211/76—Control of force or torque of the output member

Abstract

Regulation device, by means of power, of the distribution of a fluid under pressure in a hydraulic circuit (4) using the variable pressure type, from a fluid source consisting of a group of pumps (1, 2, 3) of constant flow driven by a motor (M) of constant power, characterized in that it consists of a system of gates (5, 6, 7) provided with a control device (5a, 6a, 7a) arranged in each one of the discharge ducts of the aforementioned pumps, and capable of selectively bringing into communication the corresponding discharge duct (1a, 2a, 3a), with said use circuit (4) and with a fluid return duct (8), by a pressure sensor (11, 12, 13) arranged in each of the aforementioned discharge ducts, between the pump and said gate system, and by a logic circuit device (14) whose inputs are connected to each of the sensors (11, 12, 13) and whose sa Solid lines are connected to each of the control systems (5a, 6a, 7a) of the gate system, capable of emitting command signals to said control systems based on the results of a comparison that establishes, on the one hand, two predetermined power values and, on the other hand, the sum of the products of each one of the signals emitted by the pressure sensors indicated by a constant signal it contains, representative of the value of the pump flow corresponding to the sensor considered. (Machine-translation by Google Translate, not legally binding)
ES426973A 1973-06-05 1974-06-04 Hydraulic circuit Expired ES426973A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7320411A FR2232692B3 (en) 1973-06-05 1973-06-05

Publications (1)

Publication Number Publication Date
ES426973A1 true ES426973A1 (en) 1976-07-16

Family

ID=9120530

Family Applications (2)

Application Number Title Priority Date Filing Date
ES426973A Expired ES426973A1 (en) 1973-06-05 1974-06-04 Hydraulic circuit
ES426974A Expired ES426974A1 (en) 1973-06-05 1974-06-04 Hydraulic circuit

Family Applications After (1)

Application Number Title Priority Date Filing Date
ES426974A Expired ES426974A1 (en) 1973-06-05 1974-06-04 Hydraulic circuit

Country Status (8)

Country Link
JP (2) JPS5022181A (en)
BE (2) BE815647A (en)
BR (2) BR7404588D0 (en)
DE (2) DE2426839A1 (en)
ES (2) ES426973A1 (en)
FR (1) FR2232692B3 (en)
GB (2) GB1461657A (en)
IT (2) IT1017630B (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3800964A1 (en) * 1988-01-15 1989-07-27 Loewe Pumpenfabrik Gmbh Pump system for operating pump installations comprising a plurality of pumps
JP2776882B2 (en) * 1989-04-27 1998-07-16 株式会社ユニシアジェックス Pump device
US5199854A (en) * 1990-08-08 1993-04-06 Nissan Motor Co., Ltd. Hydraulic supply arrangement for use with active automotive suspension or the like
US5251442A (en) * 1991-10-24 1993-10-12 Roche Engineering Corporation Fluid power regenerator
US5319932A (en) * 1993-04-28 1994-06-14 Roche Engineering Corporation Power sensing regenerator
DE19930562A1 (en) * 1999-07-02 2001-01-04 Still Gmbh Hydraulic system for an industrial truck
US8690553B2 (en) * 2008-02-04 2014-04-08 Illinois Tool Works Inc. Service pack tandem pump
DE102011015903B4 (en) 2011-04-01 2021-12-16 Robert Bosch Gmbh Pump arrangement

Also Published As

Publication number Publication date
GB1461657A (en) 1977-01-19
JPS5022181A (en) 1975-03-10
BE815648A (en) 1974-09-16
JPS5022182A (en) 1975-03-10
GB1461658A (en) 1977-01-19
BR7404587A (en) 1976-02-10
FR2232692B3 (en) 1976-07-23
BR7404587D0 (en) 1975-01-07
DE2426839A1 (en) 1975-01-09
FR2232692A1 (en) 1975-01-03
ES426974A1 (en) 1976-07-16
BR7404588D0 (en) 1975-01-07
DE2426904A1 (en) 1975-01-02
BE815647A (en) 1974-09-16
IT1012891B (en) 1977-03-10
IT1017630B (en) 1977-08-10

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