JPS55152901A - Hydraulic control circuit - Google Patents

Hydraulic control circuit

Info

Publication number
JPS55152901A
JPS55152901A JP5909279A JP5909279A JPS55152901A JP S55152901 A JPS55152901 A JP S55152901A JP 5909279 A JP5909279 A JP 5909279A JP 5909279 A JP5909279 A JP 5909279A JP S55152901 A JPS55152901 A JP S55152901A
Authority
JP
Japan
Prior art keywords
valves
control
throttle valve
valve
variable throttle
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.)
Pending
Application number
JP5909279A
Inventor
Hitoshi Hara
Kenichi Miyai
Original Assignee
Sumitomo Heavy Ind Ltd
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 Sumitomo Heavy Ind Ltd filed Critical Sumitomo Heavy Ind Ltd
Priority to JP5909279A priority Critical patent/JPS55152901A/en
Publication of JPS55152901A publication Critical patent/JPS55152901A/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/02Systems essentially incorporating special features for controlling the speed or actuating force of an output member
    • F15B11/04Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed
    • F15B11/042Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed by means in the feed line, i.e. "meter in"
    • F15B11/0426Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed by means in the feed line, i.e. "meter in" by controlling the number of pumps or parallel valves switched on
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/30Directional control
    • F15B2211/305Directional control characterised by the type of valves
    • F15B2211/30525Directional control valves, e.g. 4/3-directional control valve
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/40Flow control
    • F15B2211/405Flow control characterised by the type of flow control means or valve
    • F15B2211/40576Assemblies of multiple valves
    • F15B2211/40592Assemblies of multiple valves with multiple valves in parallel flow paths
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/40Flow control
    • F15B2211/42Flow control characterised by the type of actuation
    • F15B2211/426Flow control characterised by the type of actuation electrically or electronically
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/40Flow control
    • F15B2211/455Control of flow in the feed line, i.e. meter-in control
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/60Circuit components or control therefor
    • F15B2211/63Electronic controllers
    • F15B2211/6303Electronic controllers using input signals
    • F15B2211/6336Electronic controllers using input signals representing a state of the output member, e.g. position, speed or acceleration
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/70Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/705Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
    • F15B2211/7051Linear output members
    • F15B2211/7053Double-acting output members

Abstract

PURPOSE: To improve the responsibility of a hydraulic control circuit and provide stepless flow control with a compact and low-cost variable throttle valve, by combining stepped control using fixed throttle valves with stepless control using the variable throttle valve.
CONSTITUTION: Oil under control of a hydraulic pressure source 2 including a hydraulic pump is introduced in a hydraulic cylinder 1 through a reversing valve 3 which is connected with the hydraulic pressure source 2 through a group of fixed throttle valves A composed of fixed throttle valves 4W4" in parallel and reversing valves 5W5" connected in series with those fixed valves respectively. The valve group A is also connected with a variable throttle valve 6. The transfer speed of the hydraulic cylinder 1 is detected by a detector 7 and the signals are put in an operation unit 8 to control the variable throttle valve 6 in accordance with the deviation from a set value of a setting device 9. The reversing valves 5W5" are controlled according to the set value.
COPYRIGHT: (C)1980,JPO&Japio
JP5909279A 1979-05-16 1979-05-16 Hydraulic control circuit Pending JPS55152901A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5909279A JPS55152901A (en) 1979-05-16 1979-05-16 Hydraulic control circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5909279A JPS55152901A (en) 1979-05-16 1979-05-16 Hydraulic control circuit

Publications (1)

Publication Number Publication Date
JPS55152901A true JPS55152901A (en) 1980-11-28

Family

ID=13103341

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5909279A Pending JPS55152901A (en) 1979-05-16 1979-05-16 Hydraulic control circuit

Country Status (1)

Country Link
JP (1) JPS55152901A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5831500U (en) * 1981-08-26 1983-03-01
JPS5865395A (en) * 1981-10-12 1983-04-19 Hayao Kabayama Stepped type variable decompression device
JPS58102805A (en) * 1981-12-10 1983-06-18 Toshiba Mach Co Ltd Closed loop speed control circuit for oil pressure actuator
JPS5937302A (en) * 1982-08-26 1984-02-29 Ube Ind Ltd Speed control method of cylinder in hydraulic system
EP0111637A1 (en) * 1982-12-16 1984-06-27 WABCO Westinghouse Steuerungstechnik GmbH & Co. System for sensing and controlling the speed of a pistion in a cylinder
JPS608502A (en) * 1983-06-29 1985-01-17 Amada Metoretsukusu:Kk Hydraulic cylinder and cylinder control method
WO2002086327A1 (en) * 2001-04-23 2002-10-31 Matti Linjama A control system and a method for controlling an actuator and for optimizing the control by means of sets of valves coupled in parallel
JP2012528364A (en) * 2009-05-29 2012-11-12 メッツォ ペーパー インコーポレイテッド Control method of digital hydraulic pressure control device
CN105673590A (en) * 2016-03-10 2016-06-15 李阳 Pressing machine control method, oil way control system and pressing machine

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5831500U (en) * 1981-08-26 1983-03-01
JPS5865395A (en) * 1981-10-12 1983-04-19 Hayao Kabayama Stepped type variable decompression device
JPS6246756B2 (en) * 1981-10-12 1987-10-05 Hayao Kabayama
JPS58102805A (en) * 1981-12-10 1983-06-18 Toshiba Mach Co Ltd Closed loop speed control circuit for oil pressure actuator
JPS5937302A (en) * 1982-08-26 1984-02-29 Ube Ind Ltd Speed control method of cylinder in hydraulic system
JPH0241645B2 (en) * 1982-08-26 1990-09-18
EP0111637A1 (en) * 1982-12-16 1984-06-27 WABCO Westinghouse Steuerungstechnik GmbH & Co. System for sensing and controlling the speed of a pistion in a cylinder
JPS608502A (en) * 1983-06-29 1985-01-17 Amada Metoretsukusu:Kk Hydraulic cylinder and cylinder control method
WO2002086327A1 (en) * 2001-04-23 2002-10-31 Matti Linjama A control system and a method for controlling an actuator and for optimizing the control by means of sets of valves coupled in parallel
JP2012528364A (en) * 2009-05-29 2012-11-12 メッツォ ペーパー インコーポレイテッド Control method of digital hydraulic pressure control device
CN105673590A (en) * 2016-03-10 2016-06-15 李阳 Pressing machine control method, oil way control system and pressing machine

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