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JPS53107568A - Driving circuit for oil pressure cylinder - Google Patents

Driving circuit for oil pressure cylinder

Info

Publication number
JPS53107568A
JPS53107568A JP2144977A JP2144977A JPS53107568A JP S53107568 A JPS53107568 A JP S53107568A JP 2144977 A JP2144977 A JP 2144977A JP 2144977 A JP2144977 A JP 2144977A JP S53107568 A JPS53107568 A JP S53107568A
Authority
JP
Japan
Prior art keywords
driving circuit
oil pressure
pressure cylinder
cylinder
loads
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
JP2144977A
Other languages
Japanese (ja)
Inventor
Tadao Osuga
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.)
Sumitomo Heavy Industries Ltd
Original Assignee
Sumitomo Heavy Industries 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 Sumitomo Heavy Industries Ltd filed Critical Sumitomo Heavy Industries Ltd
Priority to JP2144977A priority Critical patent/JPS53107568A/en
Publication of JPS53107568A publication Critical patent/JPS53107568A/en
Pending legal-status Critical Current

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  • Fluid-Pressure Circuits (AREA)

Abstract

PURPOSE: To obtain a driving circuit for a cylinder in an oil pressure excavator and so on that can perform the increase and decrease of the speed of a cylinder automatically in response to the variation of loads in addition to the maintenance of excavating force.
COPYRIGHT: (C)1978,JPO&Japio
JP2144977A 1977-03-02 1977-03-02 Driving circuit for oil pressure cylinder Pending JPS53107568A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2144977A JPS53107568A (en) 1977-03-02 1977-03-02 Driving circuit for oil pressure cylinder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2144977A JPS53107568A (en) 1977-03-02 1977-03-02 Driving circuit for oil pressure cylinder

Publications (1)

Publication Number Publication Date
JPS53107568A true JPS53107568A (en) 1978-09-19

Family

ID=12055262

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2144977A Pending JPS53107568A (en) 1977-03-02 1977-03-02 Driving circuit for oil pressure cylinder

Country Status (1)

Country Link
JP (1) JPS53107568A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58102804U (en) * 1981-12-29 1983-07-13 油谷重工株式会社 speed increasing valve
WO1989012756A1 (en) * 1988-06-17 1989-12-28 Kabushiki Kaisha Kobe Seiko Sho Fluid control mechanism for power shovels
JPH05215103A (en) * 1992-02-03 1993-08-24 Takami Seiki Kk Speed-increasing hydraulic circuit
JP2010210072A (en) * 2009-03-12 2010-09-24 Sumitomo (Shi) Construction Machinery Co Ltd Hydraulic control system for working machine

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58102804U (en) * 1981-12-29 1983-07-13 油谷重工株式会社 speed increasing valve
JPH0245521Y2 (en) * 1981-12-29 1990-12-03
WO1989012756A1 (en) * 1988-06-17 1989-12-28 Kabushiki Kaisha Kobe Seiko Sho Fluid control mechanism for power shovels
US5083428A (en) * 1988-06-17 1992-01-28 Kabushiki Kaisha Kobe Seiko Sho Fluid control system for power shovel
JPH05215103A (en) * 1992-02-03 1993-08-24 Takami Seiki Kk Speed-increasing hydraulic circuit
JP2010210072A (en) * 2009-03-12 2010-09-24 Sumitomo (Shi) Construction Machinery Co Ltd Hydraulic control system for working machine

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