EP0396760A4 - Operation valve device - Google Patents

Operation valve device

Info

Publication number
EP0396760A4
EP0396760A4 EP19890909420 EP89909420A EP0396760A4 EP 0396760 A4 EP0396760 A4 EP 0396760A4 EP 19890909420 EP19890909420 EP 19890909420 EP 89909420 A EP89909420 A EP 89909420A EP 0396760 A4 EP0396760 A4 EP 0396760A4
Authority
EP
European Patent Office
Prior art keywords
ports
oil
support shafts
valve device
operation valve
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
EP19890909420
Other versions
EP0396760B1 (en
EP0396760A1 (en
Inventor
Jun; Kawasaki Factory Of K.K. Komatsu Maruyama
Koji; Kawasaki Factory Of K.K. Komatsu Yamashita
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.)
Komatsu Ltd
Original Assignee
Komatsu 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 Komatsu Ltd filed Critical Komatsu Ltd
Publication of EP0396760A1 publication Critical patent/EP0396760A1/en
Publication of EP0396760A4 publication Critical patent/EP0396760A4/en
Application granted granted Critical
Publication of EP0396760B1 publication Critical patent/EP0396760B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Multiple-Way Valves (AREA)
  • Details Of Valves (AREA)
  • Actuator (AREA)
  • Check Valves (AREA)

Abstract

This invention relates to an operation valve device for supplying a pressure oil to an actuator such as a hydraulic cylinder and a hydraulic motor. This operation valve device includes first and second oil ports (3, 4) for causing the pressure oil supplied to an input port (2) communicating with a pump (P) to flow out selectively into pressure chambers (B1, B2) on both sides of an actuator (B) through outlet ports (6, 7), first and second communication ports (12, 13) bored concentrically and facing each other in such a manner as to allow the first and second oil ports to communicate with a tank port (10), first and second valve ports (14, 15) bored concentrically and continuously outside the first and second communication ports, respectively, a pair of support shafts (16, 16) inserted into each of these valve ports in such a manner as to face each other, vacuum prevention valves (9, 9) fitted to the tip of these support shafts so as to open and close the communication ports, respectively, and check valves (8, 8) fitted into the intermediate portion of the support shafts in the axial direction so as to prevent the outflow of the pressure oil from the first and second oil ports to the input port side, respectively. Since the vacuum prevention valves (9, 9) and the check valves are disposed on the concentric support shafts, the operation valve device of the present invention is compact in size and can reduce oil leakage.
EP89909420A 1988-08-16 1989-08-16 Operation valve device Expired - Lifetime EP0396760B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP63202747A JP2559619B2 (en) 1988-08-16 1988-08-16 Control valve device
JP202747/88 1988-08-16
PCT/JP1989/000834 WO1990002266A1 (en) 1988-08-16 1989-08-16 Operation valve device

Publications (3)

Publication Number Publication Date
EP0396760A1 EP0396760A1 (en) 1990-11-14
EP0396760A4 true EP0396760A4 (en) 1991-01-23
EP0396760B1 EP0396760B1 (en) 1994-07-20

Family

ID=16462493

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89909420A Expired - Lifetime EP0396760B1 (en) 1988-08-16 1989-08-16 Operation valve device

Country Status (5)

Country Link
EP (1) EP0396760B1 (en)
JP (1) JP2559619B2 (en)
KR (1) KR970001463B1 (en)
DE (1) DE68916946T2 (en)
WO (1) WO1990002266A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06193750A (en) * 1992-12-22 1994-07-15 Komatsu Ltd Hydraulic valve device
DE19548943B4 (en) * 1995-12-28 2005-05-04 Bosch Rexroth Ag valve assembly
CN110159605B (en) * 2019-05-31 2024-03-15 东莞市鸿诺自动化科技有限公司 Vacuum and blowing combined valve

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3216446A (en) * 1963-02-05 1965-11-09 Parker Hannifin Corp Spool valve assembly with dual check valve assembly
GB1122219A (en) * 1965-04-26 1968-07-31 Commercial Shearing Fluid flow control valves
US3460567A (en) * 1967-10-23 1969-08-12 Parker Hannifin Corp Relief-makeup check assembly for directional control valves
DE1935097A1 (en) * 1968-07-11 1970-02-19 Monsun Tison Ab Valve
US3506031A (en) * 1967-10-06 1970-04-14 Parker Hannifin Corp Relief-makeup check assembly for directional control valves
US3779133A (en) * 1972-06-21 1973-12-18 Caterpillar Tractor Co Make-up valve for hydraulic control circuit
GB2105004A (en) * 1980-08-13 1983-03-16 Commercial Shearing Control and relief valve

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5621657U (en) * 1979-07-27 1981-02-26

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3216446A (en) * 1963-02-05 1965-11-09 Parker Hannifin Corp Spool valve assembly with dual check valve assembly
GB1122219A (en) * 1965-04-26 1968-07-31 Commercial Shearing Fluid flow control valves
US3506031A (en) * 1967-10-06 1970-04-14 Parker Hannifin Corp Relief-makeup check assembly for directional control valves
US3460567A (en) * 1967-10-23 1969-08-12 Parker Hannifin Corp Relief-makeup check assembly for directional control valves
DE1935097A1 (en) * 1968-07-11 1970-02-19 Monsun Tison Ab Valve
US3779133A (en) * 1972-06-21 1973-12-18 Caterpillar Tractor Co Make-up valve for hydraulic control circuit
GB2105004A (en) * 1980-08-13 1983-03-16 Commercial Shearing Control and relief valve

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO9002266A1 *

Also Published As

Publication number Publication date
DE68916946D1 (en) 1994-08-25
WO1990002266A1 (en) 1990-03-08
JPH0251602A (en) 1990-02-21
KR970001463B1 (en) 1997-02-06
EP0396760B1 (en) 1994-07-20
KR900702240A (en) 1990-12-06
EP0396760A1 (en) 1990-11-14
JP2559619B2 (en) 1996-12-04
DE68916946T2 (en) 1995-01-05

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