JPS5551104A - Solenoid operated selector valve - Google Patents
Solenoid operated selector valveInfo
- 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
Links
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
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)
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 |
-
1978
- 1978-10-02 JP JP12037378A patent/JPS5551104A/en active Pending
Cited By (6)
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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