JPS5551104A - Solenoid operated selector valve - Google Patents

Solenoid operated selector valve

Info

Publication number
JPS5551104A
JPS5551104A JP12037378A JP12037378A JPS5551104A JP S5551104 A JPS5551104 A JP S5551104A JP 12037378 A JP12037378 A JP 12037378A JP 12037378 A JP12037378 A JP 12037378A JP S5551104 A JPS5551104 A JP S5551104A
Authority
JP
Japan
Prior art keywords
valve
valves
tank
pump
hydraulic oil
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
JP12037378A
Other languages
Japanese (ja)
Inventor
Tadayuki Kawasaki
Yoshiaki Kagami
Bunji Hoizumi
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.)
Bosch Corp
Original Assignee
Diesel Kiki 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 Diesel Kiki Co Ltd filed Critical Diesel Kiki Co Ltd
Priority to JP12037378A priority Critical patent/JPS5551104A/en
Publication of JPS5551104A publication Critical patent/JPS5551104A/en
Pending legal-status Critical Current

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Landscapes

  • Fluid-Pressure Circuits (AREA)

Abstract

PURPOSE: To prevent rises in oil temperature by providing a spool type unloader valve, a pilot operated type poppet valve, and two two-position three-port solenoid valves for feeding and releasing pilot pressure for the unloader and poppet valves, and by circulating hydraulic oil under no load.
CONSTITUTION: With solenoid pilot valves 18 and 19 unexcited, a pilot pressure chamber 7 of an unloader valve 6 is communicated with the delivery port of a pump 3, while a pilot pressure chamber 14 of a poppet valve 11 is opened into a tank 2. Therefore, the valve 6 moves against the force of a return spring 8, and a chamber 9 in communication with the delivery port of the pump 3 communicates through a communication hole 6a with a chamber 6b opened into the tank 2. As a result, the hydraulic oil discharged from the pump 3 is returned to the tank 2 via the valve 6 and circulated under no load. The feed and release of the hydraulic oil for a load cylinder 5 are conducted by the excitation of the valves 18 and 19.
COPYRIGHT: (C)1980,JPO&Japio
JP12037378A 1978-10-02 1978-10-02 Solenoid operated selector valve Pending JPS5551104A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12037378A JPS5551104A (en) 1978-10-02 1978-10-02 Solenoid operated selector valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12037378A JPS5551104A (en) 1978-10-02 1978-10-02 Solenoid operated selector valve

Publications (1)

Publication Number Publication Date
JPS5551104A true JPS5551104A (en) 1980-04-14

Family

ID=14784590

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12037378A Pending JPS5551104A (en) 1978-10-02 1978-10-02 Solenoid operated selector valve

Country Status (1)

Country Link
JP (1) JPS5551104A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0484049A1 (en) * 1990-10-24 1992-05-06 Woodward Governor Company Flow loading unloader valve
US5125324A (en) * 1988-02-10 1992-06-30 Daia Industry Co. Ltd. Portable hydraulically operated device incorporating automatic drain valve
US5209153A (en) * 1990-02-28 1993-05-11 Daia Industry Co., Ltd. Portable hydraulically operated device incorporating automatic drain valve
JP2013064452A (en) * 2011-09-17 2013-04-11 Toyooki Kogyo Kk Diaphragm valve device
JP2014037862A (en) * 2012-08-15 2014-02-27 Kayaba Ind Co Ltd Selector valve

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5125324A (en) * 1988-02-10 1992-06-30 Daia Industry Co. Ltd. Portable hydraulically operated device incorporating automatic drain valve
US5209153A (en) * 1990-02-28 1993-05-11 Daia Industry Co., Ltd. Portable hydraulically operated device incorporating automatic drain valve
EP0484049A1 (en) * 1990-10-24 1992-05-06 Woodward Governor Company Flow loading unloader valve
JP2013064452A (en) * 2011-09-17 2013-04-11 Toyooki Kogyo Kk Diaphragm valve device
JP2014037862A (en) * 2012-08-15 2014-02-27 Kayaba Ind Co Ltd Selector valve
US9810243B2 (en) 2012-08-15 2017-11-07 Kyb Corporation Switching valve

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