JPS5779307A - Hydraulic circuit - Google Patents

Hydraulic circuit

Info

Publication number
JPS5779307A
JPS5779307A JP56071370A JP7137081A JPS5779307A JP S5779307 A JPS5779307 A JP S5779307A JP 56071370 A JP56071370 A JP 56071370A JP 7137081 A JP7137081 A JP 7137081A JP S5779307 A JPS5779307 A JP S5779307A
Authority
JP
Japan
Prior art keywords
hydraulic
operating
control valves
valves
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.)
Granted
Application number
JP56071370A
Other languages
Japanese (ja)
Other versions
JPS6056924B2 (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 JP56071370A priority Critical patent/JPS6056924B2/en
Publication of JPS5779307A publication Critical patent/JPS5779307A/en
Publication of JPS6056924B2 publication Critical patent/JPS6056924B2/en
Expired legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To stabilize 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 at least one operating signal control valve in a prescribed position.
CONSTITUTION: Pumps 1, 6 are connected to a hydraulic cylinder 4 and a hydraulic motor 5 and the hydraulic cylinder 4 and a hydraulic motor 9 through directional control valves 2, 3 and those 7, 8. The directional control valves 2, 3 and 7, 8 are coupled in parallel with the pumps 1, 6. Pilot pressure caused by an auxiliary pump 16 is appropriately distributed by hydraulic operating valves 10W12 to appropriately regulate the directional control valves 2, 3, 7, 8. Operating signal control valves 13, 14 are provided to control operating signals (c), (d) for the hydraulic operating valve 11. Operating signals (a), (b), (e), (f) are transmitted to the control valves 13, 14 through a shuttle valve 15.
COPYRIGHT: (C)1982,JPO&Japio
JP56071370A 1981-05-14 1981-05-14 hydraulic circuit Expired JPS6056924B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56071370A JPS6056924B2 (en) 1981-05-14 1981-05-14 hydraulic circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56071370A JPS6056924B2 (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
JPS5779307A true JPS5779307A (en) 1982-05-18
JPS6056924B2 JPS6056924B2 (en) 1985-12-12

Family

ID=13458540

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56071370A Expired JPS6056924B2 (en) 1981-05-14 1981-05-14 hydraulic circuit

Country Status (1)

Country Link
JP (1) JPS6056924B2 (en)

Citations (3)

* 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
JPS5417114A (en) * 1977-07-06 1979-02-08 Drythanol Ltd Dislanol composition for treating favus disease

Patent Citations (3)

* 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
JPS5417114A (en) * 1977-07-06 1979-02-08 Drythanol Ltd Dislanol composition for treating favus disease

Also Published As

Publication number Publication date
JPS6056924B2 (en) 1985-12-12

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