JPS5663102A - Turning oil-pressure circuit for oil-pressure shovel, etc. - Google Patents

Turning oil-pressure circuit for oil-pressure shovel, etc.

Info

Publication number
JPS5663102A
JPS5663102A JP14019379A JP14019379A JPS5663102A JP S5663102 A JPS5663102 A JP S5663102A JP 14019379 A JP14019379 A JP 14019379A JP 14019379 A JP14019379 A JP 14019379A JP S5663102 A JPS5663102 A JP S5663102A
Authority
JP
Japan
Prior art keywords
pressure
oil
turning
lever
direction switching
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
JP14019379A
Other languages
Japanese (ja)
Inventor
Atsuro Akiyama
Hideaki Yoshimatsu
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.)
Kobe Steel Ltd
Original Assignee
Kobe Steel 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 Kobe Steel Ltd filed Critical Kobe Steel Ltd
Priority to JP14019379A priority Critical patent/JPS5663102A/en
Publication of JPS5663102A publication Critical patent/JPS5663102A/en
Pending 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Operation Control Of Excavators (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

PURPOSE:To permit the free control of torque by lever operation at the time of acceleration period for turning by switching a direction switching valve by means of a output from the lever and also making the set pressure of an overload relief valve variable. CONSTITUTION:The pipe line 51 and 52 of an operation valve 4 to put out a control pressure according to the slant moving angle of an operation lever 41 are connected to the pilot port 21 and 22 of a direction switching valve 2 and also to set pressure-controlling oil-pressure devices 72 and 82 for overload relief valves 7 and 8. Thus, the direction switching valve 2 can be switched and also the set pressure of the overload relief valves 7 and 8 can be varied only by operating the operation lever 41, so that driving torque at the time of turning acceleration can be freely controlled.
JP14019379A 1979-10-29 1979-10-29 Turning oil-pressure circuit for oil-pressure shovel, etc. Pending JPS5663102A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14019379A JPS5663102A (en) 1979-10-29 1979-10-29 Turning oil-pressure circuit for oil-pressure shovel, etc.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14019379A JPS5663102A (en) 1979-10-29 1979-10-29 Turning oil-pressure circuit for oil-pressure shovel, etc.

Publications (1)

Publication Number Publication Date
JPS5663102A true JPS5663102A (en) 1981-05-29

Family

ID=15263067

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14019379A Pending JPS5663102A (en) 1979-10-29 1979-10-29 Turning oil-pressure circuit for oil-pressure shovel, etc.

Country Status (1)

Country Link
JP (1) JPS5663102A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5872504U (en) * 1981-11-09 1983-05-17 川崎重工業株式会社 Fluid pressure control device
JPS6136702U (en) * 1984-08-08 1986-03-07 内田油圧機器工業株式会社 Reduction circuit device using logic valve
JPS63172002A (en) * 1987-01-09 1988-07-15 Kobe Steel Ltd Turning hydraulic circuit for construction machine
JPS6411402U (en) * 1987-07-10 1989-01-20
JPH0376061U (en) * 1989-11-24 1991-07-30
FR2678323A1 (en) * 1991-06-27 1992-12-31 Barmag Barmer Maschf HYDRAULIC CIRCUIT FOR CONTROLLING THE DIRECTION OF MOVEMENT AND SPEED OF A RECEIVER.

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5872504U (en) * 1981-11-09 1983-05-17 川崎重工業株式会社 Fluid pressure control device
JPS6136702U (en) * 1984-08-08 1986-03-07 内田油圧機器工業株式会社 Reduction circuit device using logic valve
JPH0324882Y2 (en) * 1984-08-08 1991-05-30
JPS63172002A (en) * 1987-01-09 1988-07-15 Kobe Steel Ltd Turning hydraulic circuit for construction machine
JPS6411402U (en) * 1987-07-10 1989-01-20
JPH0442562Y2 (en) * 1987-07-10 1992-10-08
JPH0376061U (en) * 1989-11-24 1991-07-30
FR2678323A1 (en) * 1991-06-27 1992-12-31 Barmag Barmer Maschf HYDRAULIC CIRCUIT FOR CONTROLLING THE DIRECTION OF MOVEMENT AND SPEED OF A RECEIVER.

Similar Documents

Publication Publication Date Title
EP0381328A3 (en) Oil hydraulic circuit for hydraulic machine such as a shovel
ES463053A1 (en) Electrohydraulic control apparatus
JPS52129874A (en) Mechanical-hydraulic reduction gear
GB1440000A (en) Hydraulic control circuit
JPS5663102A (en) Turning oil-pressure circuit for oil-pressure shovel, etc.
JPS5587865A (en) Control circuit of variable capacity pump
JPS5482574A (en) Control circuit of actuator
SE8100352L (en) MANUAL DEVICE FOR MASS MOVING MACHINES AND SIMILAR
JPS57201434A (en) Oil-pressure circuit for hydraulic shovel
JPS5628302A (en) Speed control circuit of crane or the like
JPS57173601A (en) Hydraulic circuit
JPS5647396A (en) Pitch setting signal generating method of variable pitch propeller
JPS54156985A (en) Safety device of hydraulic circuit having a plurality of actuators
JPS5680506A (en) Control circuit for actuator
JPS571802A (en) Actuator driven hydraulic circuit
JPS53136235A (en) Device for controlling steering of moving agricultural machine
JPS5490465A (en) Joining hydraulic circuit
JPS5718805A (en) Controller for pneumatic cylinder and the like
JPS579352A (en) Speed ratio controller for stepless variable transmission
JPS5614603A (en) Control circuit for actuator
AU1582983A (en) Pilot operated, flow feedback controlled hydraulic valve
JPS53140479A (en) Hydraulic pressure controller
JPS5779306A (en) Hydraulic circuit
JPS55139502A (en) Control circuit for actuator
JPS57140434A (en) Oil-pressure circuit for oil-pressure shovel