JPS57113988A - Pressure fluid supply apparatus - Google Patents
Pressure fluid supply apparatusInfo
- Publication number
- JPS57113988A JPS57113988A JP55189006A JP18900680A JPS57113988A JP S57113988 A JPS57113988 A JP S57113988A JP 55189006 A JP55189006 A JP 55189006A JP 18900680 A JP18900680 A JP 18900680A JP S57113988 A JPS57113988 A JP S57113988A
- Authority
- JP
- Japan
- Prior art keywords
- flow rate
- pressure fluid
- load
- fluid
- supply volume
- 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.)
- Granted
Links
Landscapes
- Control Of Positive-Displacement Pumps (AREA)
- Power Steering Mechanism (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
PURPOSE: To provide a means capable of supplying the exact flow rate necessary to operate a fluid apparatus by combining skillfully a flow route change-over valve and a flow rate control valve to make a supply volume of pressure fluid as little as possible when no load is applied, and increasing gradually the controlled flow rate with increase of the load.
CONSTITUTION: By skillfully combining a flow route change-over valve 12 for operatively sensing a load applied to the side of a fluid apparatus and joining the pressure fluid flowing from a plurarity of pumps 1, 2 and a flow rate control valve 21 for sensing alteration of the load applied to the fluid apparatus and changing a back flow rate of a part of pressure fluid flowing through a supply route to be fed back to the side of a tank 3, the supply volume of pressure fluid can be made minimum when no load is applied and the controlled flow rate can be gradually increased with increase of the load so as to enable the flow rate to be sufficient and necessary for operating the fluid apparatus. Accordingly, the supply volume of pressure fluid can be controlled rationally or effectively, and power consumption is decreased to the lowest to save energy.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55189006A JPS57113988A (en) | 1980-12-29 | 1980-12-29 | Pressure fluid supply apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55189006A JPS57113988A (en) | 1980-12-29 | 1980-12-29 | Pressure fluid supply apparatus |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57113988A true JPS57113988A (en) | 1982-07-15 |
JPS639112B2 JPS639112B2 (en) | 1988-02-25 |
Family
ID=16233715
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP55189006A Granted JPS57113988A (en) | 1980-12-29 | 1980-12-29 | Pressure fluid supply apparatus |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57113988A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009191754A (en) * | 2008-02-15 | 2009-08-27 | Toyota Industries Corp | Variable displacement gear pump |
-
1980
- 1980-12-29 JP JP55189006A patent/JPS57113988A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009191754A (en) * | 2008-02-15 | 2009-08-27 | Toyota Industries Corp | Variable displacement gear pump |
Also Published As
Publication number | Publication date |
---|---|
JPS639112B2 (en) | 1988-02-25 |
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