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JPS54107053A - Circuit for operating hydraulic winch - Google Patents

Circuit for operating hydraulic winch

Info

Publication number
JPS54107053A
JPS54107053A JP1316578A JP1316578A JPS54107053A JP S54107053 A JPS54107053 A JP S54107053A JP 1316578 A JP1316578 A JP 1316578A JP 1316578 A JP1316578 A JP 1316578A JP S54107053 A JPS54107053 A JP S54107053A
Authority
JP
Japan
Prior art keywords
valve
circuit
port
low speed
control valve
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
JP1316578A
Other languages
Japanese (ja)
Inventor
Tsuguo Iijima
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.)
Japan Steel Works Ltd
Original Assignee
Japan Steel Works 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 Japan Steel Works Ltd filed Critical Japan Steel Works Ltd
Priority to JP1316578A priority Critical patent/JPS54107053A/en
Publication of JPS54107053A publication Critical patent/JPS54107053A/en
Pending legal-status Critical Current

Links

Landscapes

  • Fluid-Pressure Circuits (AREA)

Abstract

PURPOSE: To automatically switch a high and low speed control valve to low speed side when hoisting up large load necessary for low speed hoisting operation in a hydraulic winch for reversibly rotating a winch drum by a high and low switching hydraulic motor.
CONSTITUTION: In a circuit for operating a hydraulic winch having a high and low switching hydraulic motor 2 for rotating a winch drum 1, a high and low speed control valve 3 for controlling the motor 2, a main circuit control valve 8 for reversibly rotating the motor 2, a relief valve 6, and operator valve 9, or the like, a control valve 5 is interposed in a conduit A for connecting the valve 9 to the port e of the operating circuit of the valve 3 to supply return fluid of the valve 6 to the port 5c of the operating circuit of the valve 5. The valve 5 is operated when the pressure in the port 5c is high to enable to open the conduit A to the port e to the tank 14.
COPYRIGHT: (C)1979,JPO&Japio
JP1316578A 1978-02-08 1978-02-08 Circuit for operating hydraulic winch Pending JPS54107053A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1316578A JPS54107053A (en) 1978-02-08 1978-02-08 Circuit for operating hydraulic winch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1316578A JPS54107053A (en) 1978-02-08 1978-02-08 Circuit for operating hydraulic winch

Publications (1)

Publication Number Publication Date
JPS54107053A true JPS54107053A (en) 1979-08-22

Family

ID=11825551

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1316578A Pending JPS54107053A (en) 1978-02-08 1978-02-08 Circuit for operating hydraulic winch

Country Status (1)

Country Link
JP (1) JPS54107053A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011187520A (en) * 2010-03-05 2011-09-22 Ckd Corp Solenoid driving circuit

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5238816U (en) * 1975-09-12 1977-03-18

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5238816U (en) * 1975-09-12 1977-03-18

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011187520A (en) * 2010-03-05 2011-09-22 Ckd Corp Solenoid driving circuit
CN102782779A (en) * 2010-03-05 2012-11-14 Ckd株式会社 Solenoid drive circuit
CN102782779B (en) * 2010-03-05 2014-04-09 Ckd株式会社 Solenoid drive circuit

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