JPS57146901A - Pilot operating control valve - Google Patents

Pilot operating control valve

Info

Publication number
JPS57146901A
JPS57146901A JP3102081A JP3102081A JPS57146901A JP S57146901 A JPS57146901 A JP S57146901A JP 3102081 A JP3102081 A JP 3102081A JP 3102081 A JP3102081 A JP 3102081A JP S57146901 A JPS57146901 A JP S57146901A
Authority
JP
Japan
Prior art keywords
pump
pressure
tank
valve
rear chamber
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
JP3102081A
Other languages
Japanese (ja)
Inventor
Toshiaki Tsukimoto
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.)
Shibaura Machine Co Ltd
Original Assignee
Toshiba Machine Co 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 Toshiba Machine Co Ltd filed Critical Toshiba Machine Co Ltd
Priority to JP3102081A priority Critical patent/JPS57146901A/en
Publication of JPS57146901A publication Critical patent/JPS57146901A/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
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
    • F15B13/042—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure
    • F15B13/0422—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure with manually-operated pilot valves, e.g. joysticks

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 eliminate the necessity for pilot pump and simplify circuit constitution, by acting pressure of an operating pump to a control valve through a logic valve. CONSTITUTION:When a selector valve 10 is placed to a neutral position, a rear chamber 6a is connected to a tank 4, and pressure oil from a pump 2 is discharged to the tank 4 in an unloaded state. Now the selector valve 10 is switched to a selective position 10b, then a pipe line 9 is disconnected from the tank 4, and the rear chamber 6a of a logic valve 6 is connected to a pilot motor 12b through circuits 9, 11b. Here a check valve 7 is returned from the upper to the lower position to close a bypass passage 5 communicated to the tank 4. Then pressure of the pump 2 rises, also pressure of the rear chamber 6a rises. Pressure in the rear chamber 6a acts upon the motor 12b, and a control valve 1 is switched to a working position 1c, then pressure oil from the pump 2 is fed to rotate a motor 3.
JP3102081A 1981-03-04 1981-03-04 Pilot operating control valve Pending JPS57146901A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3102081A JPS57146901A (en) 1981-03-04 1981-03-04 Pilot operating control valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3102081A JPS57146901A (en) 1981-03-04 1981-03-04 Pilot operating control valve

Publications (1)

Publication Number Publication Date
JPS57146901A true JPS57146901A (en) 1982-09-10

Family

ID=12319832

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3102081A Pending JPS57146901A (en) 1981-03-04 1981-03-04 Pilot operating control valve

Country Status (1)

Country Link
JP (1) JPS57146901A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0438604A1 (en) * 1989-08-16 1991-07-31 Kabushiki Kaisha Komatsu Seisakusho Hydraulic circuit device
JP2007205414A (en) * 2006-01-31 2007-08-16 Kayaba Ind Co Ltd Control circuit for hydraulic actuator
JP2007205415A (en) * 2006-01-31 2007-08-16 Kayaba Ind Co Ltd Control circuit for hydraulic actuator

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4836368A (en) * 1971-09-15 1973-05-29
JPS4951475A (en) * 1972-08-18 1974-05-18

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4836368A (en) * 1971-09-15 1973-05-29
JPS4951475A (en) * 1972-08-18 1974-05-18

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0438604A1 (en) * 1989-08-16 1991-07-31 Kabushiki Kaisha Komatsu Seisakusho Hydraulic circuit device
JP2007205414A (en) * 2006-01-31 2007-08-16 Kayaba Ind Co Ltd Control circuit for hydraulic actuator
JP2007205415A (en) * 2006-01-31 2007-08-16 Kayaba Ind Co Ltd Control circuit for hydraulic actuator
JP4703418B2 (en) * 2006-01-31 2011-06-15 カヤバ工業株式会社 Control circuit for hydraulic actuator

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