JPS5680506A - Control circuit for actuator - Google Patents

Control circuit for actuator

Info

Publication number
JPS5680506A
JPS5680506A JP15859779A JP15859779A JPS5680506A JP S5680506 A JPS5680506 A JP S5680506A JP 15859779 A JP15859779 A JP 15859779A JP 15859779 A JP15859779 A JP 15859779A JP S5680506 A JPS5680506 A JP S5680506A
Authority
JP
Japan
Prior art keywords
pressure
valve
oil hydraulic
releaf
directional control
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
JP15859779A
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 JP15859779A priority Critical patent/JPS5680506A/en
Publication of JPS5680506A publication Critical patent/JPS5680506A/en
Pending legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE:To permit free control of the oil hydraulic circuit pressure at the time of acceleration and deceleration and also permit idling with the lever neutral and also torque control at the time of applying brake by reverse lever operation. CONSTITUTION:A releaf valve 5 and a directional control valve 2 are provided between a discharge pipe 11 of an oil hydraulic pump 1 and a return pipe 12, and the directional control valve 2 is connected to an oil hydraulic motor 4 via pipes 41 and 42. The pressure from an oil hydraulic' pressure source 30 is controlled by an operational valve 3 which consists of a pair of variable reducing valves 6 and 7. The resultant pressure is introduced as secondary side pressure into the directional control valve 2 and a releaf valve 5. The change of the secondary side pressure thus controls the set pressure of the releaf valve 5. The pressure in the pipes 11 and 41 thus constitutes the circuit pressure corresponding to the operation angle of the lever 31, and torque control of the oil hydraulic motor 4 can be made like a mechanical system.
JP15859779A 1979-12-05 1979-12-05 Control circuit for actuator Pending JPS5680506A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15859779A JPS5680506A (en) 1979-12-05 1979-12-05 Control circuit for actuator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15859779A JPS5680506A (en) 1979-12-05 1979-12-05 Control circuit for actuator

Publications (1)

Publication Number Publication Date
JPS5680506A true JPS5680506A (en) 1981-07-01

Family

ID=15675156

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15859779A Pending JPS5680506A (en) 1979-12-05 1979-12-05 Control circuit for actuator

Country Status (1)

Country Link
JP (1) JPS5680506A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6037401A (en) * 1983-08-10 1985-02-26 Mitsubishi Heavy Ind Ltd Hydraulic circuit for inertia load
US4548036A (en) * 1981-11-19 1985-10-22 Kabushiki Kaisha Komatsu Seisakusho Hydrostatic transmission
CN103161776A (en) * 2011-12-16 2013-06-19 北汽福田汽车股份有限公司 Hydraulic system used for engineering machinery

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 (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4548036A (en) * 1981-11-19 1985-10-22 Kabushiki Kaisha Komatsu Seisakusho Hydrostatic transmission
JPS6037401A (en) * 1983-08-10 1985-02-26 Mitsubishi Heavy Ind Ltd Hydraulic circuit for inertia load
CN103161776A (en) * 2011-12-16 2013-06-19 北汽福田汽车股份有限公司 Hydraulic system used for engineering machinery
CN103161776B (en) * 2011-12-16 2015-07-29 北汽福田汽车股份有限公司 For the hydraulic system of engineering machinery

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