JPS5490465A - Joining hydraulic circuit - Google Patents

Joining hydraulic circuit

Info

Publication number
JPS5490465A
JPS5490465A JP15669277A JP15669277A JPS5490465A JP S5490465 A JPS5490465 A JP S5490465A JP 15669277 A JP15669277 A JP 15669277A JP 15669277 A JP15669277 A JP 15669277A JP S5490465 A JPS5490465 A JP S5490465A
Authority
JP
Japan
Prior art keywords
hydraulic
throttle
pumps
valve
switch
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
JP15669277A
Other languages
Japanese (ja)
Other versions
JPS5825161B2 (en
Inventor
Shuichi Ichiyama
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 JP52156692A priority Critical patent/JPS5825161B2/en
Publication of JPS5490465A publication Critical patent/JPS5490465A/en
Publication of JPS5825161B2 publication Critical patent/JPS5825161B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Fluid-Pressure Circuits (AREA)

Abstract

PURPOSE: To improve the throttling characteristics of a joining hydraulic circuit capable of switching a plurality of directional control valves by one operating lever by enabling to switch the valves by means of small operating force.
CONSTITUTION: In a joining hydraulic circuit incorporating, for example, two hydraulic pumps 1, 2, an actuator 3 operated by the joined hydraulic oil of the pumps 1, 2, and directional control valves 4, 5 for switching the exhausted hydraulic oil from the pumps 1, 2 to switch the valves 4, 5 by operating a manipulating lever 6, there are constructed a throttle 12 fromed between the valve 5 and the hydraulic motor 3 in the circuit 11 for coupling therebetween to introduce the hydraulic pressures at the front and rear of the throttle 12 through conducts 13, 14 into left and right pressure reciving chambers A, B of the valve 4 to thus switch the valve 4 by means of the different pressure between the front and the rear pressure at the throttle 12.
COPYRIGHT: (C)1979,JPO&Japio
JP52156692A 1977-12-27 1977-12-27 Merging hydraulic circuit Expired JPS5825161B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP52156692A JPS5825161B2 (en) 1977-12-27 1977-12-27 Merging hydraulic circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP52156692A JPS5825161B2 (en) 1977-12-27 1977-12-27 Merging hydraulic circuit

Publications (2)

Publication Number Publication Date
JPS5490465A true JPS5490465A (en) 1979-07-18
JPS5825161B2 JPS5825161B2 (en) 1983-05-26

Family

ID=15633239

Family Applications (1)

Application Number Title Priority Date Filing Date
JP52156692A Expired JPS5825161B2 (en) 1977-12-27 1977-12-27 Merging hydraulic circuit

Country Status (1)

Country Link
JP (1) JPS5825161B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55154141A (en) * 1979-05-12 1980-12-01 Bosch Gmbh Robert Device for controlling oil pressure type consuming machine
JPH0272204A (en) * 1989-03-17 1990-03-12 Komatsu Ltd Valve
JPH0276908A (en) * 1989-03-17 1990-03-16 Komatsu Ltd Pressure oil supply method
CN104265707A (en) * 2014-09-25 2015-01-07 中国重汽集团青岛重工有限公司 Duplex gear pump open type hydraulic system of concrete mixer

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53145705U (en) * 1977-04-22 1978-11-16

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53145705U (en) * 1977-04-22 1978-11-16

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55154141A (en) * 1979-05-12 1980-12-01 Bosch Gmbh Robert Device for controlling oil pressure type consuming machine
JPH0272204A (en) * 1989-03-17 1990-03-12 Komatsu Ltd Valve
JPH0276908A (en) * 1989-03-17 1990-03-16 Komatsu Ltd Pressure oil supply method
JPH0454081B2 (en) * 1989-03-17 1992-08-28 Komatsu Mfg Co Ltd
JPH0454082B2 (en) * 1989-03-17 1992-08-28 Komatsu Mfg Co Ltd
CN104265707A (en) * 2014-09-25 2015-01-07 中国重汽集团青岛重工有限公司 Duplex gear pump open type hydraulic system of concrete mixer

Also Published As

Publication number Publication date
JPS5825161B2 (en) 1983-05-26

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