JPS56164205A - Hydraulic pressure circuit for hydraulic-pressure-operated apparatus - Google Patents

Hydraulic pressure circuit for hydraulic-pressure-operated apparatus

Info

Publication number
JPS56164205A
JPS56164205A JP6524080A JP6524080A JPS56164205A JP S56164205 A JPS56164205 A JP S56164205A JP 6524080 A JP6524080 A JP 6524080A JP 6524080 A JP6524080 A JP 6524080A JP S56164205 A JPS56164205 A JP S56164205A
Authority
JP
Japan
Prior art keywords
pressure
hydraulic
output port
common
port
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
JP6524080A
Other languages
Japanese (ja)
Inventor
Junichi Hosono
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 JP6524080A priority Critical patent/JPS56164205A/en
Publication of JPS56164205A publication Critical patent/JPS56164205A/en
Pending legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To decrease the number of fluid passages by a method or the like wherein one output port of each of a plurality of direction-switching valves which correspond to each other is connected with one input-output port of each of a plurality of the hydraulic-pressure-operated apparatuses by a common fluid passage.
CONSTITUTION: One output port of each of the direction-switching valves 30W32 in plural is gathered into one common port and then connected with one input-output port of each of the hydraulic-pressure-operated apparatuses 34W36 which branch from the common port and correspond to the valves through a rotary joint 33 by a common pipe line 37. Meanwhile, the other output port of each of the switching valves 30W32 is connected with the other input-output port of the corresponding apparatuses 34W36 through separate and independent pipe lines 38W40. When an operating lever 30a is pressed, pressure oil from a pressure source 20 is passed from the port on the left side of the switching valve 30 through the common port and the common pipe line 37 and makes only the apparatus 34 operate.
COPYRIGHT: (C)1981,JPO&Japio
JP6524080A 1980-05-19 1980-05-19 Hydraulic pressure circuit for hydraulic-pressure-operated apparatus Pending JPS56164205A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6524080A JPS56164205A (en) 1980-05-19 1980-05-19 Hydraulic pressure circuit for hydraulic-pressure-operated apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6524080A JPS56164205A (en) 1980-05-19 1980-05-19 Hydraulic pressure circuit for hydraulic-pressure-operated apparatus

Publications (1)

Publication Number Publication Date
JPS56164205A true JPS56164205A (en) 1981-12-17

Family

ID=13281186

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6524080A Pending JPS56164205A (en) 1980-05-19 1980-05-19 Hydraulic pressure circuit for hydraulic-pressure-operated apparatus

Country Status (1)

Country Link
JP (1) JPS56164205A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61102656U (en) * 1984-12-12 1986-06-30
WO2002095240A1 (en) * 2001-05-18 2002-11-28 Shin Caterpillar Mitsubishi Ltd. Hydraulic control circuit for attachment in construction machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61102656U (en) * 1984-12-12 1986-06-30
WO2002095240A1 (en) * 2001-05-18 2002-11-28 Shin Caterpillar Mitsubishi Ltd. Hydraulic control circuit for attachment in construction machine

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