JPS56109903A - Speed control device in oil hydraulic circuit - Google Patents

Speed control device in oil hydraulic circuit

Info

Publication number
JPS56109903A
JPS56109903A JP995880A JP995880A JPS56109903A JP S56109903 A JPS56109903 A JP S56109903A JP 995880 A JP995880 A JP 995880A JP 995880 A JP995880 A JP 995880A JP S56109903 A JPS56109903 A JP S56109903A
Authority
JP
Japan
Prior art keywords
flow control
control valves
valves
speed control
speed
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
JP995880A
Other languages
Japanese (ja)
Inventor
Kazuo Ono
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.)
KANTO SEIKI KOGYO KK
KANTOU SEIKI KOGYO KK
Original Assignee
KANTO SEIKI KOGYO KK
KANTOU SEIKI KOGYO KK
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 KANTO SEIKI KOGYO KK, KANTOU SEIKI KOGYO KK filed Critical KANTO SEIKI KOGYO KK
Priority to JP995880A priority Critical patent/JPS56109903A/en
Publication of JPS56109903A publication Critical patent/JPS56109903A/en
Pending 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
    • F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
    • F15B11/04—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed
    • F15B11/042—Systems 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"
    • F15B11/0426—Systems 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
    • 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
    • F15B2211/20538—Type of pump constant capacity
    • 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
    • F15B2211/3138—Directional control characterised by the positions of the valve element the positions being discrete
    • 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
    • F15B2211/40—Flow control
    • F15B2211/405—Flow control characterised by the type of flow control means or valve
    • F15B2211/40507—Flow control characterised by the type of flow control means or valve with constant 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
    • F15B2211/405—Flow control characterised by the type of flow control means or valve
    • F15B2211/40553—Flow control characterised by the type of flow control means or valve with pressure compensating valves
    • F15B2211/40561—Flow control characterised by the type of flow control means or valve with pressure compensating valves the pressure compensating valve arranged upstream of the flow control 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
    • F15B2211/40—Flow control
    • F15B2211/405—Flow control characterised by the type of flow control means or valve
    • F15B2211/40576—Assemblies of multiple valves
    • F15B2211/40592—Assemblies of multiple valves with multiple valves in parallel flow paths
    • 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
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
    • F15B2211/7051—Linear output members
    • F15B2211/7053—Double-acting output members
    • 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
    • F15B2211/75—Control of speed of the output member

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

PURPOSE: To enable the speed of a hydraulic actuator to be controlled at any value in the multistages in a speed control means wherein a plurality of flow control valves connected in parallel by using pressure compensated flow control valves for said flow control valves.
CONSTITUTION: In the oil hydraulic circuit wherein the delivered oil from a hydraulic pump 11 is supplied to a hydraulic cylinder 12 via a 4-port 3-position switching valve 13, the speed control means is constituted by a plurality of the flow control valves X0WXn which are connected in parallel and solenoid operated opening and closing valves Y0Wyn which are connected in series with said flow control valve X0WXn. For said flow control valves X0WXn, are used the pressure compensated flow control valves that enclose reducing valves which are capable of sensing the upward and downward pressures at the throttle parts of the valves and always passing the constant flow. Said flow control valves X0WXn selects the desired flow rate or established value from the geometric progression which satisfies the general equation K=2n.
COPYRIGHT: (C)1981,JPO&Japio
JP995880A 1980-02-01 1980-02-01 Speed control device in oil hydraulic circuit Pending JPS56109903A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP995880A JPS56109903A (en) 1980-02-01 1980-02-01 Speed control device in oil hydraulic circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP995880A JPS56109903A (en) 1980-02-01 1980-02-01 Speed control device in oil hydraulic circuit

Publications (1)

Publication Number Publication Date
JPS56109903A true JPS56109903A (en) 1981-08-31

Family

ID=11734445

Family Applications (1)

Application Number Title Priority Date Filing Date
JP995880A Pending JPS56109903A (en) 1980-02-01 1980-02-01 Speed control device in oil hydraulic circuit

Country Status (1)

Country Link
JP (1) JPS56109903A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58165010U (en) * 1982-04-28 1983-11-02 酒井重工業株式会社 Cylinder rapid feed device for working equipment in road cutter and load stabilizer
JPS608502A (en) * 1983-06-29 1985-01-17 Amada Metoretsukusu:Kk Hydraulic cylinder and cylinder control method
JPS61181713U (en) * 1985-04-30 1986-11-13
JPS62248513A (en) * 1986-04-22 1987-10-29 Amada Co Ltd Bending device
JPH0610904A (en) * 1992-03-19 1994-01-21 Friedrich Wilh Schwing Gmbh Hydraulic type sliding controller for hydraulic operation cylinder
JP2010164086A (en) * 2009-01-13 2010-07-29 Isuzu Motors Ltd Plunger mechanism for combining multiple thrust
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
CN103629171A (en) * 2013-10-22 2014-03-12 天津优瑞纳斯液压机械有限公司 Hydraulic actuator with speed control device

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58165010U (en) * 1982-04-28 1983-11-02 酒井重工業株式会社 Cylinder rapid feed device for working equipment in road cutter and load stabilizer
JPS608502A (en) * 1983-06-29 1985-01-17 Amada Metoretsukusu:Kk Hydraulic cylinder and cylinder control method
JPS61181713U (en) * 1985-04-30 1986-11-13
JPS62248513A (en) * 1986-04-22 1987-10-29 Amada Co Ltd Bending device
JPH0610904A (en) * 1992-03-19 1994-01-21 Friedrich Wilh Schwing Gmbh Hydraulic type sliding controller for hydraulic operation cylinder
JP2010164086A (en) * 2009-01-13 2010-07-29 Isuzu Motors Ltd Plunger mechanism for combining multiple thrust
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
CN103629171A (en) * 2013-10-22 2014-03-12 天津优瑞纳斯液压机械有限公司 Hydraulic actuator with speed control device

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