JPS56160406A - Hydraulic controlling valve - Google Patents
Hydraulic controlling valveInfo
- Publication number
- JPS56160406A JPS56160406A JP6451880A JP6451880A JPS56160406A JP S56160406 A JPS56160406 A JP S56160406A JP 6451880 A JP6451880 A JP 6451880A JP 6451880 A JP6451880 A JP 6451880A JP S56160406 A JPS56160406 A JP S56160406A
- Authority
- JP
- Japan
- Prior art keywords
- port
- valve
- spool
- controlling valve
- main spool
- 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
Abstract
PURPOSE: To obtain a smooth switchover between flow control and pressure control with excellent response by attaining either flow control or pressure control function with a single hydraulic controlling valve of 3 port type.
CONSTITUTION: A spring L is arranged between a main spool S and a pilot spool S', and a room R1 is installed on the opposite side, while a power feed back mechanism is formed by connecting a port B' of the pilot spool S' to the room R1 through a passage W. Further, a 3 port valve is composed of a port P, port T, port B arranged on both sides of a valve of the main spool S and throttles C3, C4 formed between the valve and the port B. Since a position of the main spool S is determined by the power feed back, the pressure or the flow of a load may be controlled by adjusting opening and closing of throttles C3, C4 with a driving current of torque motor M.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6451880A JPS56160406A (en) | 1980-05-14 | 1980-05-14 | Hydraulic controlling valve |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6451880A JPS56160406A (en) | 1980-05-14 | 1980-05-14 | Hydraulic controlling valve |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS56160406A true JPS56160406A (en) | 1981-12-10 |
Family
ID=13260506
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6451880A Pending JPS56160406A (en) | 1980-05-14 | 1980-05-14 | Hydraulic controlling valve |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56160406A (en) |
-
1980
- 1980-05-14 JP JP6451880A patent/JPS56160406A/en active Pending
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