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JPS5779306A - Hydraulic circuit - Google Patents

Hydraulic circuit

Info

Publication number
JPS5779306A
JPS5779306A JP56071369A JP7136981A JPS5779306A JP S5779306 A JPS5779306 A JP S5779306A JP 56071369 A JP56071369 A JP 56071369A JP 7136981 A JP7136981 A JP 7136981A JP S5779306 A JPS5779306 A JP S5779306A
Authority
JP
Japan
Prior art keywords
hydraulic
valves
directional control
operating
valve
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.)
Granted
Application number
JP56071369A
Other languages
Japanese (ja)
Other versions
JPS6056923B2 (en
Inventor
Shinya Okabe
Kimio Katsuki
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.)
Hitachi Construction Machinery Co Ltd
Original Assignee
Hitachi Construction Machinery 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 Hitachi Construction Machinery Co Ltd filed Critical Hitachi Construction Machinery Co Ltd
Priority to JP56071369A priority Critical patent/JPS6056923B2/en
Publication of JPS5779306A publication Critical patent/JPS5779306A/en
Publication of JPS6056923B2 publication Critical patent/JPS6056923B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Operation Control Of Excavators (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

PURPOSE: To stabilize working action when hydraulic appliances connected to a parallel hydraulic circuit in which directional control valves are coupled in parallel with hydraulic pumps are combinedly operated by hydraulic operating valves, by providing an operating signal control valve in a prescribed position.
CONSTITUTION: Pumps 1, 6 are connected to hydraulic cylinders 4, 5 and those 5, 9 through directional control valves 2, 3 and those 7, 8. The directional control valves 2, 3 and those 7, 8 are coupled in parallel with te pumps 1, 6. Pilot pressure caused by an auxiliary pump 14 is appropriately distributed by the operation of hydraulic operating valves 10W12 to appropriately regulate the directional control valves 2, 3, 7, 8. An operating signal control valve 13 made of a hydraulic changeover valve is provided to control an operating signal (a) for the hydraulic operating valve 10. The control valve 13 is normally set in a position G but is shifted to a position H by an operating signal (c) for shifting the directional control valve 12 to a position C.
COPYRIGHT: (C)1982,JPO&Japio
JP56071369A 1981-05-14 1981-05-14 hydraulic circuit Expired JPS6056923B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56071369A JPS6056923B2 (en) 1981-05-14 1981-05-14 hydraulic circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56071369A JPS6056923B2 (en) 1981-05-14 1981-05-14 hydraulic circuit

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP2709974A Division JPS539346B2 (en) 1974-03-11 1974-03-11

Publications (2)

Publication Number Publication Date
JPS5779306A true JPS5779306A (en) 1982-05-18
JPS6056923B2 JPS6056923B2 (en) 1985-12-12

Family

ID=13458511

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56071369A Expired JPS6056923B2 (en) 1981-05-14 1981-05-14 hydraulic circuit

Country Status (1)

Country Link
JP (1) JPS6056923B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008032318A (en) * 2006-07-28 2008-02-14 Paloma Ind Ltd Gas cooking stove

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0386961A (en) * 1989-08-30 1991-04-11 Aiwa Co Ltd Recording and reproducing device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3720059A (en) * 1969-10-15 1973-03-13 Linde Ag Hydraulic system and valve therefor
JPS4919281A (en) * 1972-04-17 1974-02-20

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3720059A (en) * 1969-10-15 1973-03-13 Linde Ag Hydraulic system and valve therefor
JPS4919281A (en) * 1972-04-17 1974-02-20

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008032318A (en) * 2006-07-28 2008-02-14 Paloma Ind Ltd Gas cooking stove

Also Published As

Publication number Publication date
JPS6056923B2 (en) 1985-12-12

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