JPS57177405A - Combined flow type flow control circuit associated with pressure compensation - Google Patents
Combined flow type flow control circuit associated with pressure compensationInfo
- Publication number
- JPS57177405A JPS57177405A JP6302281A JP6302281A JPS57177405A JP S57177405 A JPS57177405 A JP S57177405A JP 6302281 A JP6302281 A JP 6302281A JP 6302281 A JP6302281 A JP 6302281A JP S57177405 A JPS57177405 A JP S57177405A
- Authority
- JP
- Japan
- Prior art keywords
- valve
- flow control
- pump
- control circuit
- pressure compensation
- 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: In a flow control circuit for a hydraulic circuit havng a plurality of pumps, to enable the selection of the flow control pattern and the quick flow control, by combining or separating the delivery flow of each pump in accordance to the exchange operation of an exchange valve and the opening of a throttle valve.
CONSTITUTION: A throttle valve 15 is placed in the main line 13 for connecting an actuator 12 to the delivery side of variable pump 11. A load sensing valve 21, a pilot valve 22 fir controlling the pressure having similar structure and surge abosrbing valve 23 in the shape of a relief valve are provided between said valve 15 and the pump 11. Furthermore a fixed pump 71 is provided where the delivery line 72 is connected to the main line 13 at the upstream of the valve 15 while simultaneously connected to a bypass type pressure compensation valve 74. The spring chamber of said valve 74 can connect a two-way exchange electromagntic valve 77 to the downstream of a tank 80 and the throttle valve 15. The pilot line 78 between the valves 74, 77 is connected through a relief valve 87 to the tank 89.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6302281A JPS57177405A (en) | 1981-04-25 | 1981-04-25 | Combined flow type flow control circuit associated with pressure compensation |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6302281A JPS57177405A (en) | 1981-04-25 | 1981-04-25 | Combined flow type flow control circuit associated with pressure compensation |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57177405A true JPS57177405A (en) | 1982-11-01 |
Family
ID=13217274
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6302281A Pending JPS57177405A (en) | 1981-04-25 | 1981-04-25 | Combined flow type flow control circuit associated with pressure compensation |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57177405A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012154464A2 (en) * | 2011-05-10 | 2012-11-15 | Caterpillar Inc. | Pressure limiting in hydraulic systems |
-
1981
- 1981-04-25 JP JP6302281A patent/JPS57177405A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012154464A2 (en) * | 2011-05-10 | 2012-11-15 | Caterpillar Inc. | Pressure limiting in hydraulic systems |
WO2012154464A3 (en) * | 2011-05-10 | 2013-01-03 | Caterpillar Inc. | Pressure limiting in hydraulic systems |
US9003786B2 (en) | 2011-05-10 | 2015-04-14 | Caterpillar Inc. | Pressure limiting in hydraulic systems |
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