JPS56127803A - Hydraulic circuit for driving single rod cyclinder - Google Patents

Hydraulic circuit for driving single rod cyclinder

Info

Publication number
JPS56127803A
JPS56127803A JP3074980A JP3074980A JPS56127803A JP S56127803 A JPS56127803 A JP S56127803A JP 3074980 A JP3074980 A JP 3074980A JP 3074980 A JP3074980 A JP 3074980A JP S56127803 A JPS56127803 A JP S56127803A
Authority
JP
Japan
Prior art keywords
arrow
hydraulic pump
load
cylinder
speed
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
JP3074980A
Other languages
Japanese (ja)
Other versions
JPS5939601B2 (en
Inventor
Yukio Aoyanagi
Eiki Izumi
Hiroshi Watanabe
Kazuo Honma
Yoshio Nakajima
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 JP3074980A priority Critical patent/JPS5939601B2/en
Publication of JPS56127803A publication Critical patent/JPS56127803A/en
Publication of JPS5939601B2 publication Critical patent/JPS5939601B2/en
Expired legal-status Critical Current

Links

Abstract

PURPOSE: To make constant the speed of the cylinder irrespective of the direction of a load by providing an auxiliary hydraulic pump interlocking with a main hydraulic pump and connecting one of the discharge port of the auxiliary hydraulic pump to the head side of a single rod cylinder.
CONSTITUTION: A double-inclined auxiliary hydraulic pump 17 is provided. This auxilary hydraulic pump 17 operates in linkage with a main hydraulic pump 1, and one of discharge ports of the auxiliary hydraulic pump 17 is connected to the head side of a single rod cylinder 2. Accordingly, the ratio between the rod side area AR and the head side area AH is set at 1:2. The driving direction is indicated by the arrow A, the direction of the load by the arrow A, and the driving direction by the arrow B and the direction of the load by the arrow A, the discharge quantity is set at Q. Then, the speed of the cylinder becomes Q/AR. When the driving direction is indicated by the arrow A, the direction of the load by the arrow B and the driving direction by the arrow B and the direction of the load by the arrow B, the speed of the cylinder becomed 2Q/AH=Q/AR. Therefore, the speed of the cylinder becomes constant irrespective of the direction of the load.
COPYRIGHT: (C)1981,JPO&Japio
JP3074980A 1980-03-11 1980-03-11 Single rod cylinder drive hydraulic circuit Expired JPS5939601B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3074980A JPS5939601B2 (en) 1980-03-11 1980-03-11 Single rod cylinder drive hydraulic circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3074980A JPS5939601B2 (en) 1980-03-11 1980-03-11 Single rod cylinder drive hydraulic circuit

Publications (2)

Publication Number Publication Date
JPS56127803A true JPS56127803A (en) 1981-10-06
JPS5939601B2 JPS5939601B2 (en) 1984-09-25

Family

ID=12312325

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3074980A Expired JPS5939601B2 (en) 1980-03-11 1980-03-11 Single rod cylinder drive hydraulic circuit

Country Status (1)

Country Link
JP (1) JPS5939601B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5934002A (en) * 1982-08-21 1984-02-24 Hitachi Constr Mach Co Ltd Hydraulic closed circuit device
JPS60136604A (en) * 1983-12-26 1985-07-20 Hitachi Constr Mach Co Ltd Drive and control hydraulic circuit of working machine
WO2015030234A1 (en) * 2013-09-02 2015-03-05 日立建機株式会社 Drive device for work machine

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62225202A (en) * 1986-03-27 1987-10-03 Ulvac Corp Centrifugal evaporator
JP5954927B2 (en) * 2010-11-15 2016-07-20 日邦興産株式会社 Hydraulic device

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5934002A (en) * 1982-08-21 1984-02-24 Hitachi Constr Mach Co Ltd Hydraulic closed circuit device
JPS60136604A (en) * 1983-12-26 1985-07-20 Hitachi Constr Mach Co Ltd Drive and control hydraulic circuit of working machine
JPH0340242B2 (en) * 1983-12-26 1991-06-18
WO2015030234A1 (en) * 2013-09-02 2015-03-05 日立建機株式会社 Drive device for work machine
JP2015048899A (en) * 2013-09-02 2015-03-16 日立建機株式会社 Apparatus for driving working machine
CN105074230A (en) * 2013-09-02 2015-11-18 日立建机株式会社 Drive device for work machine
US9783960B2 (en) 2013-09-02 2017-10-10 Hitachi Construction Machinery Co., Ltd. Driving device for work machine

Also Published As

Publication number Publication date
JPS5939601B2 (en) 1984-09-25

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