KR830008060A - 유압식 제어 시스템 - Google Patents

유압식 제어 시스템 Download PDF

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Publication number
KR830008060A
KR830008060A KR1019810005203A KR810005203A KR830008060A KR 830008060 A KR830008060 A KR 830008060A KR 1019810005203 A KR1019810005203 A KR 1019810005203A KR 810005203 A KR810005203 A KR 810005203A KR 830008060 A KR830008060 A KR 830008060A
Authority
KR
South Korea
Prior art keywords
fluid
flow
displacement
pump
signal
Prior art date
Application number
KR1019810005203A
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English (en)
Inventor
시이 웨스트뷔어 로버어트
Original Assignee
프란시스 제이 토마스
제네랄 시그날 코오포레이션
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 프란시스 제이 토마스, 제네랄 시그날 코오포레이션 filed Critical 프란시스 제이 토마스
Publication of KR830008060A publication Critical patent/KR830008060A/ko

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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
    • F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/002—Hydraulic systems to change the pump delivery
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B11/00—Automatic controllers
    • 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
    • F15B2211/2053—Type of pump
    • F15B2211/20546—Type of pump variable capacity
    • F15B2211/20553—Type of pump variable capacity with pilot circuit, e.g. for controlling a swash plate
    • 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
    • F15B2211/25—Pressure control functions
    • 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
    • F15B2211/30—Directional control
    • F15B2211/305—Directional control characterised by the type of valves
    • F15B2211/30525—Directional control valves, e.g. 4/3-directional control valve
    • 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
    • F15B2211/31—Directional control characterised by the positions of the valve element
    • F15B2211/3105—Neutral or centre positions
    • F15B2211/3111—Neutral or centre positions the pump port being closed in the centre position, e.g. so-called closed centre
    • 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
    • F15B2211/31—Directional control characterised by the positions of the valve element
    • F15B2211/3144—Directional control characterised by the positions of the valve element the positions being continuously variable, e.g. as realised by proportional 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
    • F15B2211/30—Directional control
    • F15B2211/315—Directional control characterised by the connections of the valve or valves in the circuit
    • F15B2211/3157—Directional control characterised by the connections of the valve or valves in the circuit being connected to a pressure source, an output member and a return line
    • F15B2211/31576—Directional control characterised by the connections of the valve or valves in the circuit being connected to a pressure source, an output member and a return line having a single pressure source and a single output member
    • 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
    • F15B2211/50518—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means using pressure relief 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
    • F15B2211/50—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
    • 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
    • F15B2211/635—Circuits providing pilot pressure to pilot pressure-controlled fluid circuit elements
    • F15B2211/6355—Circuits providing pilot pressure to pilot pressure-controlled fluid circuit elements having valve means

Abstract

내용 없음

Description

유압식 제어 시스템
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 발명의 유압식 제어 시스템의 제1예의 도식도.
제2도는 본 발명의 유압식 제어 시스템의 제2예의 도식도.

Claims (7)

  1. 유체 저장조 : 그 유체저장조와 통하여 있는 유체 유입구를가지고 있고 또한 유체 배출구를 가진 가변 변위 펌프; 그 펌프의 변위를 제어하기 위한 유체 압력 작동식 변위 제어 수단; 상기 펌프로부터 유체 작동장치로의 유체의 흐름을 제어하기 위해 상기 유체 배출구 및 상기 저장조와 통하여 있는 제어 밸브 수단; 신호 유체의 일정한 흐름을 발생시키기 위한 수단; 상기 신호 유체 흐름을 조절하기 위한 상기 제어밸브를 포함하는 수단; 상기 신호 유체의 압력의 변화에 응하여 상기 신호유체의 일부분을 상기 제어수단으로 흐르게 하거나 또는 상기 제어 수단을 상기 저장조와 통하도록 배치시키기 위해, 상기 조절수단의 배출구, 상기 변위 제어 수단 및 상기 저장조와 유체가 통하도록 연통하여 있는 센서 밸브 수단으로 구성된 유압식 제어 시스템.
  2. 제1항에 있어서, 상기 신호 유체흐름 발생수단이 상기 저장조에 연결된 정변위펌프를 포함하는 상기 제어시스템.
  3. 제1항에 있어서, 상기 신호 유체 흐름 발생 수단이 상기 펌프의 유체 배출구에 연결된 압력 보상식흐름 제어 밸브를 포함하는 상기 제어시스템.
  4. 상기 항들중 한 항에 있어서, 상기 센서 밸브 수단이, 상기 신호 유체의 압력이 미리 정해진 값을 초과한때 상기 변위 제어 수단과 통하도록 상기 신호 유체의 일부분을 배치시켜 펌프 변위를 감소시키도록 하는 수단과, 상기 신호유체의 압력이 상기 미리 정해진 값보다작은 때 상기 저장조와 통하도록 상기 변위제어수단을 배치시켜 펌프 변위를 증가시키도록 하는 수단을 포함하는 상기 제어시스템.
  5. 제4항에 있어서, 상기 센서 밸브 수단이, 상기 신호유체의 압력이 상기 미리 정해진 값과 동일할 때 상기 신호유체, 상기 변위 제어 수단 및 상기 저장조 사이의 유체흐름을 봉쇄하여 펌프 변위를 일정하게 유지하도록 하는 수단을 더 포함하는 상기 제어 시스템.
  6. 상기 항들중 한 항에 있어서, 상기 제어 밸브 수단이, 유체 작동장치에 연결되는 데 적합하게 된 적어도 하나의 급유구, 상기 가변 변위 펌프와 상기 급유구 사이의 유체 흐름이 봉쇄되는 중립 위치, 및 상기 가변 변위 펌프의 유체 배출구가 상기 급유구와 유체가 통하도록 배치되는 적어도 하나의 작동 위치를 가지고 있고 상기 조절 수단이 상기 신호 유체 흐름 발생 수단과 저장조 사이의 흐름을 제한하기 위한 고정오리피스를 포함하고, 상기 제어밸브가 그가 상기 중립위치와 상기 작동위치 사이에 있을 때 상기 신호 유체흐름 발생 수단과 고정오리피스 사이의 유로내 흐름을 제한하기 위한 수단을 더 가지고 있고, 그 흐름 제한 수단이, 상기 밸브가 상기 중립 위치로부터 상기 작동위치 쪽으로 이동된 때 상기 유로내 가변제한부를 제한하는 상기 제어시스템.
  7. 제6항에 있어서, 상기 조절 수단이 상기 신호 유체 밸브의 일부분을 송출하기 위해 상기 가변 오리피스와 상기 고정 오리피스 사이에 배치된 제어 포오트를 포함하는 상기 제어 시스템.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019810005203A 1981-01-16 1981-12-29 유압식 제어 시스템 KR830008060A (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/225,815 US4408453A (en) 1981-01-16 1981-01-16 Hydraulic control system
US225815 1981-01-16

Publications (1)

Publication Number Publication Date
KR830008060A true KR830008060A (ko) 1983-11-09

Family

ID=22846368

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019810005203A KR830008060A (ko) 1981-01-16 1981-12-29 유압식 제어 시스템

Country Status (7)

Country Link
US (1) US4408453A (ko)
EP (1) EP0056514A3 (ko)
JP (1) JPS57137701A (ko)
KR (1) KR830008060A (ko)
BR (1) BR8108545A (ko)
CA (1) CA1174561A (ko)
PL (1) PL234723A1 (ko)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5940002A (ja) * 1982-08-31 1984-03-05 Kayaba Ind Co Ltd 油圧制御回路
JPS5943202A (ja) * 1982-09-02 1984-03-10 Kayaba Ind Co Ltd 油圧制御回路
JPS5943203A (ja) * 1982-09-03 1984-03-10 Kayaba Ind Co Ltd 油圧制御回路
DE3925297A1 (de) * 1989-07-31 1991-02-07 Linde Ag Steuereinrichtung fuer eine verstellbare hydrostatische maschine
US5017094A (en) * 1990-03-12 1991-05-21 Eaton Corporation Solenoid valve control system for hydrostatic transmission
DE4135277C2 (de) * 1991-10-25 1994-12-22 Rexroth Mannesmann Gmbh Regeleinrichtung für eine verstellbare Hydraulikpumpe
US5237819A (en) * 1992-02-21 1993-08-24 Caterpillar Inc. Pilot control circuit with preselected actuation delays
US5873244A (en) * 1997-11-21 1999-02-23 Caterpillar Inc. Positive flow control system
US6179570B1 (en) * 1999-06-08 2001-01-30 Caterpillar Inc. Variable pump control for hydraulic fan drive
DE10209964A1 (de) * 2002-03-06 2003-09-25 Zf Lenksysteme Gmbh System zur Steuerung einer hydraulischen Verstellpumpe
JP4453411B2 (ja) * 2004-03-18 2010-04-21 コベルコ建機株式会社 作業機械の油圧制御装置
DE102011122366A1 (de) * 2011-12-23 2013-06-27 Robert Bosch Gmbh Druckregelanordnung mit Druckregelventil und hydraulischer Kreis damit
CN107420365B (zh) * 2017-06-20 2023-11-07 江苏徐工工程机械研究院有限公司 负载敏感控制阀和负载敏感控制系统

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3777492A (en) * 1971-02-17 1973-12-11 Dowty Technical Dev Ltd Hydraulic apparatus including variable delivery pumps
US3947194A (en) * 1972-02-22 1976-03-30 Putzmeister Interholding Gmbh. Apparatus for damping the pressure increase of hydrostatic drives
US3788077A (en) * 1972-07-13 1974-01-29 Borg Warner Open center control of variable pumps
US3963378A (en) * 1975-06-04 1976-06-15 Caterpillar Tractor Co. Part throttle control -- pump override
US4047590A (en) * 1975-12-05 1977-09-13 Kabushiki Kaisha Komatsu Seisakusho Hydraulic circuit for steering control in articulate vehicles
US4067193A (en) * 1976-11-22 1978-01-10 Caterpillar Tractor Co. Combined hydrostatic transmission implement system
DE2700803C2 (de) * 1977-01-11 1982-10-28 Sauer Getriebe KG, 2350 Neumünster Regelungssystem für eine Antriebseinrichtung
US4197705A (en) * 1978-05-30 1980-04-15 General Signal Corporation Hydraulic control system
DE2827810C2 (de) * 1978-06-24 1983-03-17 Zahnradfabrik Friedrichshafen Ag, 7990 Friedrichshafen Automotive Steuerung für einen hydrostatischen Fahrantrieb

Also Published As

Publication number Publication date
EP0056514A2 (en) 1982-07-28
PL234723A1 (ko) 1982-11-22
EP0056514A3 (en) 1982-08-04
CA1174561A (en) 1984-09-18
US4408453A (en) 1983-10-11
BR8108545A (pt) 1982-10-19
JPS57137701A (en) 1982-08-25

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