JPS57144302A - Hydraulic operating circuit of controlling valve - Google Patents

Hydraulic operating circuit of controlling valve

Info

Publication number
JPS57144302A
JPS57144302A JP2841581A JP2841581A JPS57144302A JP S57144302 A JPS57144302 A JP S57144302A JP 2841581 A JP2841581 A JP 2841581A JP 2841581 A JP2841581 A JP 2841581A JP S57144302 A JPS57144302 A JP S57144302A
Authority
JP
Japan
Prior art keywords
pilot
valve
valves
controlling valve
pipings
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.)
Granted
Application number
JP2841581A
Other languages
Japanese (ja)
Other versions
JPS599763B2 (en
Inventor
Yuhei Sato
Masato Namegawa
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.)
Hitachi Construction Machinery Co Ltd
Original Assignee
Hitachi Construction Machinery 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 Hitachi Construction Machinery Co Ltd filed Critical Hitachi Construction Machinery Co Ltd
Priority to JP2841581A priority Critical patent/JPS599763B2/en
Publication of JPS57144302A publication Critical patent/JPS57144302A/en
Publication of JPS599763B2 publication Critical patent/JPS599763B2/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
    • 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 efficiently perform the separating and connecting job of a pilot valve from and with the circuit by a method wherein the separating and connecting operation of said pilot valve is rendered to be possible by a single stop valve in the captioned circuit, in which a plurality of pilot valves are provided for a single controlling valve. CONSTITUTION:The pilot valve 6 can be separated from the hydraulic circuit, in which the pilot valves 5 and 6 are provided for the controlling valve 2 and switching valves 3 and 4 for selecting pilot valve are arranged between the controlling valve 2 and the pilot valves 5 and 6 respectively. Pipings 201 and 202, in which check valves 20 and 21 are equipped respectively, are respectively connected with pilot pipings 103 and 105 connecting the switching valves 3 and 4 with joints 7 and 8 which are connected with the pilot valve 6. The outlet sides of the check valves 20 and 21 of the pipings 201 and 202 are commonly connected to a drainage piping 203, in which a stop valve 22 is equipped, and the outlet side of the drainage piping 203 is connected to a return piping 122 for pressurized oil.
JP2841581A 1981-03-02 1981-03-02 Control valve operation hydraulic circuit Expired JPS599763B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2841581A JPS599763B2 (en) 1981-03-02 1981-03-02 Control valve operation hydraulic circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2841581A JPS599763B2 (en) 1981-03-02 1981-03-02 Control valve operation hydraulic circuit

Publications (2)

Publication Number Publication Date
JPS57144302A true JPS57144302A (en) 1982-09-06
JPS599763B2 JPS599763B2 (en) 1984-03-05

Family

ID=12248017

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2841581A Expired JPS599763B2 (en) 1981-03-02 1981-03-02 Control valve operation hydraulic circuit

Country Status (1)

Country Link
JP (1) JPS599763B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60179502A (en) * 1984-02-25 1985-09-13 Hitachi Constr Mach Co Ltd Operating circuit for hydraulic actuator
US5081905A (en) * 1987-02-20 1992-01-21 Hitachi Construction Machinery Co., Ltd. Hydraulic pilot operation circuit and valve for quickly discharging oil
EP1691083A2 (en) * 2005-02-09 2006-08-16 Bosch Rexroth AG Hydraulic control device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60179502A (en) * 1984-02-25 1985-09-13 Hitachi Constr Mach Co Ltd Operating circuit for hydraulic actuator
US5081905A (en) * 1987-02-20 1992-01-21 Hitachi Construction Machinery Co., Ltd. Hydraulic pilot operation circuit and valve for quickly discharging oil
EP1691083A2 (en) * 2005-02-09 2006-08-16 Bosch Rexroth AG Hydraulic control device
EP1691083A3 (en) * 2005-02-09 2007-05-02 Bosch Rexroth AG Hydraulic control device

Also Published As

Publication number Publication date
JPS599763B2 (en) 1984-03-05

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