JPS579305A - Oil pressure circuit - Google Patents
Oil pressure circuitInfo
- Publication number
- JPS579305A JPS579305A JP8273380A JP8273380A JPS579305A JP S579305 A JPS579305 A JP S579305A JP 8273380 A JP8273380 A JP 8273380A JP 8273380 A JP8273380 A JP 8273380A JP S579305 A JPS579305 A JP S579305A
- Authority
- JP
- Japan
- Prior art keywords
- actuator
- oil pressure
- throttle
- discharge port
- direction switch
- 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 the over-run of anactuator during the extension as well as permit the acceleration of the speed of the actuator by improving an oil pressure circuit with a direction switch valve whose discharge port is varied with the driving direction of the actuator.
CONSTITUTION: In an oil pressure circuit in whch a direction switch vale 3 is provided between an oil pressure source 1 and an actuator 2, a throttle 14 is provided on the downstream side of the discharge port 5 of the direction switch valve 3, and the throttle 14 and the discharge port 5 are connected by a connection pipeline 15 on an incoming port 6 the discharge port 5. And, a check valve 16 through which oil can be flowed only toward the port 6 side from the throttle 14 side is provided to the connection pipeline 15. Thus, when extending the actuator 2 by switching the direction switch valve 3 to the position A, the over-run of the actuator 2 can be prevented owing to the passing of oil on the rod side of the actuator 2 through the throttle 14 even when the load in the direction C acts on the actuator 2.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8273380A JPS579305A (en) | 1980-06-20 | 1980-06-20 | Oil pressure circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8273380A JPS579305A (en) | 1980-06-20 | 1980-06-20 | Oil pressure circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS579305A true JPS579305A (en) | 1982-01-18 |
Family
ID=13782612
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8273380A Pending JPS579305A (en) | 1980-06-20 | 1980-06-20 | Oil pressure circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS579305A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58142003A (en) * | 1982-02-15 | 1983-08-23 | Mitsubishi Heavy Ind Ltd | Driving circuit of actuator with vacuum preventive mechanism |
-
1980
- 1980-06-20 JP JP8273380A patent/JPS579305A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58142003A (en) * | 1982-02-15 | 1983-08-23 | Mitsubishi Heavy Ind Ltd | Driving circuit of actuator with vacuum preventive mechanism |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS5270235A (en) | Cylinder number controlling system in engine | |
JPS56126642A (en) | Cylinder-number controlled engine | |
JPS579305A (en) | Oil pressure circuit | |
JPS5766243A (en) | Liquid pressure circuit for construction machinery | |
JPS56131806A (en) | Oil hydraulic circuit for driving oil hydraulic cylinder | |
JPS5628302A (en) | Speed control circuit of crane or the like | |
JPS5643033A (en) | Four wheel drive with automatic transmission | |
JPS57201434A (en) | Oil-pressure circuit for hydraulic shovel | |
JPS5572445A (en) | Deceleration sensing multiple break point load response brake pressure control valve | |
JPS57157802A (en) | Surge pressure absorber circuit | |
JPS57124102A (en) | Hydraulic circuit | |
JPS57186601A (en) | Hydraulic sudden change preventing device of hydraulic driving system | |
JPS5773206A (en) | Oil pressure circuit | |
JPS56153102A (en) | Decompression circuit for cylinder | |
JPS5754704A (en) | Hydraulic circuit | |
JPS5620803A (en) | Hydraulic circuit | |
JPS57191036A (en) | Control circuit for injection process | |
JPS5410574A (en) | Washer | |
JPS5729860A (en) | Direction control valve | |
JPS5532817A (en) | Hydraulic circuit for hydraulic shovel | |
JPS56143859A (en) | Stepless hydraulic transmission device | |
JPS54121378A (en) | Hydraulic cylinder drive circuit | |
JPS57243A (en) | Independent circuit for slewing of oil-pressure shovel | |
JPS5334111A (en) | Closed compressor | |
JPS57129959A (en) | Oil hydraulic circuit driven by inertial mass |