JPS55135206A - Simultaneously operated direction control valve - Google Patents

Simultaneously operated direction control valve

Info

Publication number
JPS55135206A
JPS55135206A JP4232479A JP4232479A JPS55135206A JP S55135206 A JPS55135206 A JP S55135206A JP 4232479 A JP4232479 A JP 4232479A JP 4232479 A JP4232479 A JP 4232479A JP S55135206 A JPS55135206 A JP S55135206A
Authority
JP
Japan
Prior art keywords
direction control
feed
control valves
valves
lines
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
JP4232479A
Other languages
Japanese (ja)
Other versions
JPS5945841B2 (en
Inventor
Megumi Miyake
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.)
Nabco Ltd
Original Assignee
Nabco 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 Nabco Ltd filed Critical Nabco Ltd
Priority to JP4232479A priority Critical patent/JPS5945841B2/en
Publication of JPS55135206A publication Critical patent/JPS55135206A/en
Publication of JPS5945841B2 publication Critical patent/JPS5945841B2/en
Expired legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To effectively perform the operation of each load, by providing pilot sequence valves for controlling the pressure of fluid in feed lines of the direction control valves used for constructing simultaneously operating fluid circuits such as parallel circuits.
CONSTITUTION: To a delivery circuit 3 of a pump 1 are connected direction control valves 10W12 through a feed line 20 to control the feed-return operation of pressure oil for each of actuators 13W15. While an unload line 19 is provided in such a manner that the circuit 3 is connected to a tank 2 when each of the direction control valves is placed in neutral positions 16aW16c. Simultaneously pilot lines 24aW24c are provided in such a manner that the pressure oil is supplied to the actuators 13W15 when the direction control valves are placed in the first and second selecting positions. Further pilot sequence valves 21aW21c are interposed between the feed line 20 and bridge lines 48 linked to the feed side of each actuator when each direction control valve is placed at the first and second selecting positions.
COPYRIGHT: (C)1980,JPO&Japio
JP4232479A 1979-04-06 1979-04-06 pressure fluid control circuit Expired JPS5945841B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4232479A JPS5945841B2 (en) 1979-04-06 1979-04-06 pressure fluid control circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4232479A JPS5945841B2 (en) 1979-04-06 1979-04-06 pressure fluid control circuit

Publications (2)

Publication Number Publication Date
JPS55135206A true JPS55135206A (en) 1980-10-21
JPS5945841B2 JPS5945841B2 (en) 1984-11-09

Family

ID=12632821

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4232479A Expired JPS5945841B2 (en) 1979-04-06 1979-04-06 pressure fluid control circuit

Country Status (1)

Country Link
JP (1) JPS5945841B2 (en)

Also Published As

Publication number Publication date
JPS5945841B2 (en) 1984-11-09

Similar Documents

Publication Publication Date Title
JPS57197336A (en) Oil-pressure circuit for turning excavator
EP0381328A3 (en) Oil hydraulic circuit for hydraulic machine such as a shovel
JP2511629Y2 (en) Hydraulic circuit
JPS55135206A (en) Simultaneously operated direction control valve
JPS5614605A (en) Hydraulic driving method and system for actuator
JPS57120704A (en) Confluent composite control valve
JPS54156985A (en) Safety device of hydraulic circuit having a plurality of actuators
JPS5694007A (en) Pressure circuit for hydraulic crane
JPS5610801A (en) Double-system confluence circuit device
JPS57116914A (en) Priority control type fluid pressure circuit
JPS57144302A (en) Hydraulic operating circuit of controlling valve
GB2003100A (en) Vehicle hydraulic systems
JPS57173601A (en) Hydraulic circuit
JPS57127103A (en) Pressure fluid circuit
JPS5927525Y2 (en) hydraulic circuit
JPS5690158A (en) Slewing drive controller
JPS5652605A (en) Pressure fluid circuit
JPS5618103A (en) Pressurized fluid circuit
JPS5940562Y2 (en) Hydraulic remote control device operation priority circuit
JPS594166Y2 (en) Hydraulic system pressure control circuit
JPS57116840A (en) Operating device for civil engineering work and construction machinery
JPS56156505A (en) Fluid circuit
JPS5779306A (en) Hydraulic circuit
JPS5464701A (en) Three-pump joining circuit
JPS57102579A (en) Control circuit of concrete transporting pump