JPS5594068A - Hydraulic pressure control valve - Google Patents

Hydraulic pressure control valve

Info

Publication number
JPS5594068A
JPS5594068A JP14679A JP14679A JPS5594068A JP S5594068 A JPS5594068 A JP S5594068A JP 14679 A JP14679 A JP 14679A JP 14679 A JP14679 A JP 14679A JP S5594068 A JPS5594068 A JP S5594068A
Authority
JP
Japan
Prior art keywords
oil
spool
pressurized oil
operating
pressurized
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
JP14679A
Other languages
Japanese (ja)
Other versions
JPS607146B2 (en
Inventor
Yoshizumi Nishimura
Kunihiko Yoshida
Kenichi Koshi
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 JP14679A priority Critical patent/JPS607146B2/en
Publication of JPS5594068A publication Critical patent/JPS5594068A/en
Publication of JPS607146B2 publication Critical patent/JPS607146B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Safety Valves (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

PURPOSE: To obtain a high response characteristic, by displaying a big damping effect when in a changeover of spool to the direction of operating the actuator, and rapidly making a reset when in its resetting operation in the method of free discharge of oil.
CONSTITUTION: With a hydraulic changeover valve 2 switched the position IIW I, if led the pressurized oil of a hydraulic pump 1 to an operating oil pressure pipe line 8, its pressurized oil pushes to open a poppet valve 7 and is fed to a hydraulic motor 3. A pressurized oil, passing an oil passage 11 to act on an oil chamber 10, goes into a damping room 21 through a throttling oil hole 20 of a spring receiver 19, and slides a spool 5 rightward while displaying a damping effect. If cut off a feed of pressurized oil to the operating oil pressure pipe line 8, though with the spool 5 intended to be returned by the reaction of a spring 6', a pressurized oil in a left end of the spool 5 presses the spring receiver 19, to construct a clearance between a level difference part 22 and the spring receiver 19, consequently, a rapid return can be made without being applied a damping action of the throttling oil hole 20.
COPYRIGHT: (C)1980,JPO&Japio
JP14679A 1979-01-08 1979-01-08 hydraulic control valve Expired JPS607146B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14679A JPS607146B2 (en) 1979-01-08 1979-01-08 hydraulic control valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14679A JPS607146B2 (en) 1979-01-08 1979-01-08 hydraulic control valve

Publications (2)

Publication Number Publication Date
JPS5594068A true JPS5594068A (en) 1980-07-17
JPS607146B2 JPS607146B2 (en) 1985-02-22

Family

ID=11465883

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14679A Expired JPS607146B2 (en) 1979-01-08 1979-01-08 hydraulic control valve

Country Status (1)

Country Link
JP (1) JPS607146B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6154501U (en) * 1984-09-13 1986-04-12
US5349818A (en) * 1993-08-11 1994-09-27 Teleflex (Canada) Limited Low deadband marine hydraulic steering system
US5481871A (en) * 1995-03-02 1996-01-09 Teleflex (Canada) Ltd. Hydraulic steering system with spool pressure equalization

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0724190B2 (en) * 1986-07-23 1995-03-15 日本電気株式会社 Gas discharge display

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6154501U (en) * 1984-09-13 1986-04-12
JPH0329649Y2 (en) * 1984-09-13 1991-06-24
US5349818A (en) * 1993-08-11 1994-09-27 Teleflex (Canada) Limited Low deadband marine hydraulic steering system
USRE36342E (en) * 1993-08-11 1999-10-19 Teleflex (Canada) Ltd. Low deadband marine hydraulic steering system
US5481871A (en) * 1995-03-02 1996-01-09 Teleflex (Canada) Ltd. Hydraulic steering system with spool pressure equalization

Also Published As

Publication number Publication date
JPS607146B2 (en) 1985-02-22

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