JPS5715158A - Counterbalance valve device - Google Patents

Counterbalance valve device

Info

Publication number
JPS5715158A
JPS5715158A JP9131680A JP9131680A JPS5715158A JP S5715158 A JPS5715158 A JP S5715158A JP 9131680 A JP9131680 A JP 9131680A JP 9131680 A JP9131680 A JP 9131680A JP S5715158 A JPS5715158 A JP S5715158A
Authority
JP
Japan
Prior art keywords
spool
throttle
oil
pilot passage
oil pressure
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
JP9131680A
Other languages
Japanese (ja)
Inventor
Hirokatsu Sakamoto
Norimoto Yoshida
Masao Ohashi
Shuji Sasaya
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.)
Kawasaki Heavy Industries Ltd
Original Assignee
Kawasaki Heavy Industries 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 Kawasaki Heavy Industries Ltd filed Critical Kawasaki Heavy Industries Ltd
Priority to JP9131680A priority Critical patent/JPS5715158A/en
Publication of JPS5715158A publication Critical patent/JPS5715158A/en
Pending legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To soften the impact generated at the power transmission part of a hydraulic motor by forming the throttle part for discharging the working oil having a fixed variation of oil pressure midway on the pilot passage for switching a counterbalance spool.
CONSTITUTION: Midway on the pilot passage 5 and 6 for switching a conterbalance spool 7 against springs 8 and 9, the throttle parts 22 and 23 for discharging the work oil having a fixed variation of oil pressure are formed on the downstream side from main throttle parts 20 and 21. During the spool 7 is in operation at position A, if the pressure in a line 3 varies momentarily and increases, the working oil having the variation of oil pressure is discharged into a tank 13 from the throttle part 22 of the pilot passage 5. Therefore, the spool 7 operates slowly, and throttle between lines 11 and 4 is released gently, and the impact generated at the power transmission part of a hydraulic motor 12 can be reduced.
COPYRIGHT: (C)1982,JPO&Japio
JP9131680A 1980-07-03 1980-07-03 Counterbalance valve device Pending JPS5715158A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9131680A JPS5715158A (en) 1980-07-03 1980-07-03 Counterbalance valve device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9131680A JPS5715158A (en) 1980-07-03 1980-07-03 Counterbalance valve device

Publications (1)

Publication Number Publication Date
JPS5715158A true JPS5715158A (en) 1982-01-26

Family

ID=14023051

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9131680A Pending JPS5715158A (en) 1980-07-03 1980-07-03 Counterbalance valve device

Country Status (1)

Country Link
JP (1) JPS5715158A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62100306U (en) * 1985-12-16 1987-06-26
JPH01132063A (en) * 1987-10-15 1989-05-24 Toshiba Corp Water circulation system
JPH01140564A (en) * 1987-10-15 1989-06-01 Toshiba Corp Ammonia removal device and method therefor
JPH0290472A (en) * 1987-10-15 1990-03-29 Toshiba Corp Method of removing ammonia
JPH04312203A (en) * 1991-04-05 1992-11-04 Yanagisawa Seiki Seisakusho:Kk Sub-valve for auxiliary hydraulic pressure
CN102042273A (en) * 2010-08-13 2011-05-04 长沙中联重工科技发展股份有限公司 Hydraulic control loop and method

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51137925A (en) * 1975-05-24 1976-11-29 Kawasaki Heavy Ind Ltd Counter balance valve

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51137925A (en) * 1975-05-24 1976-11-29 Kawasaki Heavy Ind Ltd Counter balance valve

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62100306U (en) * 1985-12-16 1987-06-26
JPH01132063A (en) * 1987-10-15 1989-05-24 Toshiba Corp Water circulation system
JPH01140564A (en) * 1987-10-15 1989-06-01 Toshiba Corp Ammonia removal device and method therefor
JPH0290472A (en) * 1987-10-15 1990-03-29 Toshiba Corp Method of removing ammonia
JPH04312203A (en) * 1991-04-05 1992-11-04 Yanagisawa Seiki Seisakusho:Kk Sub-valve for auxiliary hydraulic pressure
CN102042273A (en) * 2010-08-13 2011-05-04 长沙中联重工科技发展股份有限公司 Hydraulic control loop and method
WO2012019498A1 (en) * 2010-08-13 2012-02-16 长沙中联重工科技发展股份有限公司 Hydraulic control circuit and method

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