CA1120827A - Control valve for working machine - Google Patents

Control valve for working machine

Info

Publication number
CA1120827A
CA1120827A CA000307479A CA307479A CA1120827A CA 1120827 A CA1120827 A CA 1120827A CA 000307479 A CA000307479 A CA 000307479A CA 307479 A CA307479 A CA 307479A CA 1120827 A CA1120827 A CA 1120827A
Authority
CA
Canada
Prior art keywords
valve
change
passage
chamber
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.)
Expired
Application number
CA000307479A
Other languages
English (en)
French (fr)
Inventor
Hirokatsu Sakamoto
Masao Ohashi
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.)
Iseki & Co Ltd
Original Assignee
Iseki & 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 Iseki & Co Ltd filed Critical Iseki & Co Ltd
Application granted granted Critical
Publication of CA1120827A publication Critical patent/CA1120827A/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
    • F15B13/01—Locking-valves or other detent i.e. load-holding devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Lifting Devices For Agricultural Implements (AREA)
CA000307479A 1977-07-19 1978-07-17 Control valve for working machine Expired CA1120827A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP8697977A JPS5422070A (en) 1977-07-19 1977-07-19 Control valve for machine
JP52-86979 1977-07-19

Publications (1)

Publication Number Publication Date
CA1120827A true CA1120827A (en) 1982-03-30

Family

ID=13901980

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000307479A Expired CA1120827A (en) 1977-07-19 1978-07-17 Control valve for working machine

Country Status (5)

Country Link
JP (1) JPS5422070A (enExample)
CA (1) CA1120827A (enExample)
DE (1) DE2831515C2 (enExample)
FR (1) FR2398202A1 (enExample)
GB (1) GB2001516B (enExample)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5648982B2 (enExample) * 1973-10-19 1981-11-19

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3035610A (en) * 1959-09-10 1962-05-22 Oliver Corp Control valve for hydraulic actuator
JPS4825199U (enExample) * 1971-07-31 1973-03-24
DE2449599A1 (de) * 1974-10-18 1976-04-29 Bosch Gmbh Robert Wegeventil
US4088151A (en) * 1976-05-26 1978-05-09 Borg-Warner Corporation Cylinder locking apparatus

Also Published As

Publication number Publication date
DE2831515C2 (de) 1986-11-06
GB2001516A (en) 1979-02-07
GB2001516B (en) 1982-02-10
DE2831515A1 (de) 1979-02-22
FR2398202B1 (enExample) 1983-12-16
JPS6257843B2 (enExample) 1987-12-03
JPS5422070A (en) 1979-02-19
FR2398202A1 (fr) 1979-02-16

Similar Documents

Publication Publication Date Title
US9206821B2 (en) Hydraulic switching mechanism for mobile hydraulics, mobile hydraulic machine and valve unit
JPH10507133A (ja) プレスのための液圧駆動装置
US4647004A (en) Pneumatic-hydraulic actuator system
CA2013711C (en) A method and an arrangement for controlling a rock drilling apparatus
CA2486736C (en) Hydraulic control in a hydraulic system, especially for the operation of scrap cutters
JPH02102901A (ja) 空気油圧増圧式の圧力変換器の圧油充填法及びその方法を実施するための装置
US3173339A (en) Power control valve
GB1598487A (en) Control valves for fluid pumps
KR100545691B1 (ko) 유압 회로
EP0209019B1 (en) Hydraulic control system
US5832807A (en) Hydraulic control for a dividing machine tool
US5586435A (en) Hydraulic closed loop control system
CA1120826A (en) Control valve for working machine
KR20000053334A (ko) 차단장치를 가진 유공압 서보모터
US8418722B2 (en) Pressure-regulator servovalve with reduced leakage rate
US5020322A (en) Accumulator blow-back hydraulic circuit
EP2425139B1 (en) A fluid operated actuator including a bleed port
US3250185A (en) Circuit control valve instrumentality
EP0774547A1 (en) Valve apparatus for preventing fall of working machine
KR20030022120A (ko) 유압 제어 시스템
KR830000191B1 (ko) 작업기용 컨트롤 밸브
US4453453A (en) Hydraulic control device
US4470339A (en) Braking valve for hydraulic circuits
US3535876A (en) Flow transducer
RU2121438C1 (ru) Многокривошипный пресс с гидропредохранителем

Legal Events

Date Code Title Description
MKEX Expiry