JPS5680505A - Control circuit for actuator - Google Patents

Control circuit for actuator

Info

Publication number
JPS5680505A
JPS5680505A JP15859679A JP15859679A JPS5680505A JP S5680505 A JPS5680505 A JP S5680505A JP 15859679 A JP15859679 A JP 15859679A JP 15859679 A JP15859679 A JP 15859679A JP S5680505 A JPS5680505 A JP S5680505A
Authority
JP
Japan
Prior art keywords
oil hydraulic
neutral
pressure
control
releaf
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
JP15859679A
Other languages
Japanese (ja)
Inventor
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 JP15859679A priority Critical patent/JPS5680505A/en
Publication of JPS5680505A publication Critical patent/JPS5680505A/en
Pending legal-status Critical Current

Links

Landscapes

  • Fluid-Pressure Circuits (AREA)
  • Control Of Fluid Gearings (AREA)

Abstract

PURPOSE: To permit torque control through free control of the circuit pressure at the time of acceleration and deceleration of an oil hydraulic motor for revolving an oil hydraulic crane or the like and permit ready selection and alternation of the control with the lever neutral (neutral idling, neutral braking and slight neutral braking).
CONSTITUTION: A main releaf valve 5 and overload releaf valves 6 and 7 are provided between pipes 11, 13, 41 and 42. An operational valve 3 converts the oil hydraulic pressure from an oil hydraulic pressure source 30 into a secondary side pressure varying according to the angle of a lever 31 and leads the secondary pressure to the individual releaf valves. By appropritately selecting the preset pressure control ranges of the individual releaf valves, the inner pressure in the ducts 11 and 41 can be freely controlled. Thus, it is possible to obtain torque control of the oil hydraulic motor as in a mechanical system with the oil hydraulic system. In addition, such control as neutral braking, neutral idling and slight neutral braking can be freely obtained. Thus, enhanced versatility and improved operation efficiency can be obtained.
COPYRIGHT: (C)1981,JPO&Japio
JP15859679A 1979-12-05 1979-12-05 Control circuit for actuator Pending JPS5680505A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15859679A JPS5680505A (en) 1979-12-05 1979-12-05 Control circuit for actuator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15859679A JPS5680505A (en) 1979-12-05 1979-12-05 Control circuit for actuator

Publications (1)

Publication Number Publication Date
JPS5680505A true JPS5680505A (en) 1981-07-01

Family

ID=15675132

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15859679A Pending JPS5680505A (en) 1979-12-05 1979-12-05 Control circuit for actuator

Country Status (1)

Country Link
JP (1) JPS5680505A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6030802A (en) * 1983-07-28 1985-02-16 Toshiba Mach Co Ltd Inertial mass driving hydraulic circuit
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
JPS6197601U (en) * 1984-12-03 1986-06-23

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5321379A (en) * 1976-08-11 1978-02-27 Nippon Sharyo Seizo Kk Pressure controllable hydraulic circuit
JPS5321380A (en) * 1976-08-11 1978-02-27 Nippon Sharyo Seizo Kk Pressure controllable hydraulic circuit

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5321379A (en) * 1976-08-11 1978-02-27 Nippon Sharyo Seizo Kk Pressure controllable hydraulic circuit
JPS5321380A (en) * 1976-08-11 1978-02-27 Nippon Sharyo Seizo Kk Pressure controllable hydraulic circuit

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6030802A (en) * 1983-07-28 1985-02-16 Toshiba Mach Co Ltd Inertial mass driving hydraulic circuit
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
JPS6197601U (en) * 1984-12-03 1986-06-23
JPH0332801Y2 (en) * 1984-12-03 1991-07-11

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