AU1297988A - Pilot-operated hydraulic circuit and hydraulic quick exhaust valve - Google Patents

Pilot-operated hydraulic circuit and hydraulic quick exhaust valve

Info

Publication number
AU1297988A
AU1297988A AU12979/88A AU1297988A AU1297988A AU 1297988 A AU1297988 A AU 1297988A AU 12979/88 A AU12979/88 A AU 12979/88A AU 1297988 A AU1297988 A AU 1297988A AU 1297988 A AU1297988 A AU 1297988A
Authority
AU
Australia
Prior art keywords
pilot
exhaust valve
hydraulic
quick exhaust
operated
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
AU12979/88A
Other versions
AU619457B2 (en
Inventor
Kimio Katsuki
Soutarou Tanaka
Takashi Yagyu
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
Priority claimed from JP2378787U external-priority patent/JPS63132102U/ja
Priority claimed from JP1987027682U external-priority patent/JPH0433499Y2/ja
Application filed by Hitachi Construction Machinery Co Ltd filed Critical Hitachi Construction Machinery Co Ltd
Priority claimed from PCT/JP1988/000166 external-priority patent/WO1988006241A1/en
Publication of AU1297988A publication Critical patent/AU1297988A/en
Application granted granted Critical
Publication of AU619457B2 publication Critical patent/AU619457B2/en
Anticipated expiration legal-status Critical
Ceased 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
    • F15B13/0424—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 the joysticks being provided with electrical switches or sensors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/2496—Self-proportioning or correlating systems
    • Y10T137/2544—Supply and exhaust type
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/86493—Multi-way valve unit
    • Y10T137/86574—Supply and exhaust
    • Y10T137/86582—Pilot-actuated
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/86493—Multi-way valve unit
    • Y10T137/86574—Supply and exhaust
    • Y10T137/86582—Pilot-actuated
    • Y10T137/86614—Electric

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Operation Control Of Excavators (AREA)
AU12979/88A 1987-02-20 1988-02-18 Pilot-operated hydraulic circuit and hydraulic quick exhaust valve Ceased AU619457B2 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
JP62-23787 1987-02-20
JP2378787U JPS63132102U (en) 1987-02-20 1987-02-20
JP1987027682U JPH0433499Y2 (en) 1987-02-26 1987-02-26
JP62-27682 1987-02-26
PCT/JP1988/000166 WO1988006241A1 (en) 1987-02-20 1988-02-18 Pilot-operated hydraulic circuit and hydraulic quick exhaust valve

Publications (2)

Publication Number Publication Date
AU1297988A true AU1297988A (en) 1988-09-14
AU619457B2 AU619457B2 (en) 1992-01-30

Family

ID=27284390

Family Applications (1)

Application Number Title Priority Date Filing Date
AU12979/88A Ceased AU619457B2 (en) 1987-02-20 1988-02-18 Pilot-operated hydraulic circuit and hydraulic quick exhaust valve

Country Status (2)

Country Link
AU (1) AU619457B2 (en)
DE (1) DE3890121T1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108757608A (en) * 2018-08-20 2018-11-06 四川宏华石油设备有限公司 A kind of top drive hydraulic control system

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4215720A (en) * 1978-10-02 1980-08-05 General Signal Corporation Fluid control valve system
JPH0349286Y2 (en) * 1986-09-01 1991-10-22

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108757608A (en) * 2018-08-20 2018-11-06 四川宏华石油设备有限公司 A kind of top drive hydraulic control system

Also Published As

Publication number Publication date
AU619457B2 (en) 1992-01-30
DE3890121T1 (en) 1989-04-13

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Legal Events

Date Code Title Description
MK14 Patent ceased section 143(a) (annual fees not paid) or expired