JPS5499881A - Fluid pressure operating device - Google Patents

Fluid pressure operating device

Info

Publication number
JPS5499881A
JPS5499881A JP614078A JP614078A JPS5499881A JP S5499881 A JPS5499881 A JP S5499881A JP 614078 A JP614078 A JP 614078A JP 614078 A JP614078 A JP 614078A JP S5499881 A JPS5499881 A JP S5499881A
Authority
JP
Japan
Prior art keywords
valve
actuator
closed
pilot pressure
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
JP614078A
Other languages
Japanese (ja)
Inventor
Yoshiharu Tada
Bunji Hoizumi
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.)
Bosch Corp
Original Assignee
Diesel Kiki 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 Diesel Kiki Co Ltd filed Critical Diesel Kiki Co Ltd
Priority to JP614078A priority Critical patent/JPS5499881A/en
Publication of JPS5499881A publication Critical patent/JPS5499881A/en
Pending legal-status Critical Current

Links

Landscapes

  • Fluid-Pressure Circuits (AREA)
  • Magnetically Actuated Valves (AREA)

Abstract

PURPOSE: To improve the responding property of control of operating speed and position of an actuator and reduce the shock at the time of starting, by controlling a change-over valve of a fluid circuit by pilot pressure based on the on-off control of solenoid valves.
CONSTITUTION: The poppet-valve-type solenoid valves 16, 30 conduct the pilot pressure from the upstream sides of valve elements 12, 25 into pilot pressure chambers 13, 26. The unload port 10 of a first valve 2 of a fluid supply system is closed by the valve element 12. The relief port 24 of a second valve 21 of a fluid return system is closed by the valve element 25. The solenoid valves 16, 30 are opened or closed by a controller to operate the valves 2, 21 to control the operating speed and position of the actuator 6. Thereby, the starting shock and travel end shock of the actuator 6 can be reduced.
COPYRIGHT: (C)1979,JPO&Japio
JP614078A 1978-01-25 1978-01-25 Fluid pressure operating device Pending JPS5499881A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP614078A JPS5499881A (en) 1978-01-25 1978-01-25 Fluid pressure operating device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP614078A JPS5499881A (en) 1978-01-25 1978-01-25 Fluid pressure operating device

Publications (1)

Publication Number Publication Date
JPS5499881A true JPS5499881A (en) 1979-08-07

Family

ID=11630197

Family Applications (1)

Application Number Title Priority Date Filing Date
JP614078A Pending JPS5499881A (en) 1978-01-25 1978-01-25 Fluid pressure operating device

Country Status (1)

Country Link
JP (1) JPS5499881A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62196648U (en) * 1986-06-02 1987-12-14

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49103086A (en) * 1973-02-08 1974-09-28
JPS5164190A (en) * 1974-11-30 1976-06-03 Toyoda Chuo Kenkyusho Kk RYUTAIAKUCHUEETANOSEIGYOHOHO OYOBI SONOSOCHI

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49103086A (en) * 1973-02-08 1974-09-28
JPS5164190A (en) * 1974-11-30 1976-06-03 Toyoda Chuo Kenkyusho Kk RYUTAIAKUCHUEETANOSEIGYOHOHO OYOBI SONOSOCHI

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62196648U (en) * 1986-06-02 1987-12-14
JPH0547570Y2 (en) * 1986-06-02 1993-12-15

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