CA1085267A - Dual pump flow combining system - Google Patents
Dual pump flow combining systemInfo
- Publication number
- CA1085267A CA1085267A CA301,984A CA301984A CA1085267A CA 1085267 A CA1085267 A CA 1085267A CA 301984 A CA301984 A CA 301984A CA 1085267 A CA1085267 A CA 1085267A
- Authority
- CA
- Canada
- Prior art keywords
- pump
- valve
- motor
- port
- chamber
- 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.)
- Expired
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
- F15B11/17—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors using two or more pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
- F15B2211/2053—Type of pump
- F15B2211/20538—Type of pump constant capacity
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
- F15B2211/20576—Systems with pumps with multiple pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/30—Directional control
- F15B2211/305—Directional control characterised by the type of valves
- F15B2211/30505—Non-return valves, i.e. check valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/30—Directional control
- F15B2211/315—Directional control characterised by the connections of the valve or valves in the circuit
- F15B2211/3157—Directional control characterised by the connections of the valve or valves in the circuit being connected to a pressure source, an output member and a return line
- F15B2211/31582—Directional control characterised by the connections of the valve or valves in the circuit being connected to a pressure source, an output member and a return line having multiple pressure sources and a single output member
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/50—Pressure control
- F15B2211/505—Pressure control characterised by the type of pressure control means
- F15B2211/50509—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means
- F15B2211/50536—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means using unloading valves controlling the supply pressure by diverting fluid to the return line
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/50—Pressure control
- F15B2211/52—Pressure control characterised by the type of actuation
- F15B2211/528—Pressure control characterised by the type of actuation actuated by fluid pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/60—Circuit components or control therefor
- F15B2211/65—Methods of control of the load sensing pressure
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
- Control Of Fluid Gearings (AREA)
- Details Of Reciprocating Pumps (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US81426077A | 1977-07-11 | 1977-07-11 | |
US814,260 | 1977-07-11 |
Publications (1)
Publication Number | Publication Date |
---|---|
CA1085267A true CA1085267A (en) | 1980-09-09 |
Family
ID=25214565
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA301,984A Expired CA1085267A (en) | 1977-07-11 | 1978-04-26 | Dual pump flow combining system |
Country Status (5)
Country | Link |
---|---|
JP (1) | JPS5419071A (de) |
CA (1) | CA1085267A (de) |
DE (1) | DE2829551A1 (de) |
FR (1) | FR2397548A1 (de) |
GB (1) | GB1566385A (de) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5811236A (ja) * | 1981-07-08 | 1983-01-22 | Toshiba Mach Co Ltd | 車輌用油圧装置 |
DE3210759A1 (de) * | 1981-09-17 | 1983-10-06 | Walter Schopf | Pumpenkombination mit mengenreguliereinrichtung |
JPS6039343U (ja) * | 1983-08-22 | 1985-03-19 | 海野 治男 | 解体コンクリ−トの選別破砕装置 |
DE3608469A1 (de) * | 1986-03-14 | 1987-10-01 | Bosch Gmbh Robert | Hydraulikanlage |
DE3611973C2 (de) * | 1986-04-09 | 1994-04-14 | Rexroth Mannesmann Gmbh | Nebenschlußventil |
DE19640103C2 (de) * | 1996-09-28 | 2000-12-07 | Danfoss Fluid Power As Nordbor | Steuerventil |
CN109372814B (zh) * | 2018-12-15 | 2023-09-19 | 浙江海宏液压科技股份有限公司 | 一种合流起升负载敏感多路阀 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2728194A (en) * | 1954-03-29 | 1955-12-27 | Vickers Inc | Control circuit for hydraulic power transmission |
US4002027A (en) * | 1973-10-01 | 1977-01-11 | Tyrone Hydraulics, Inc. | Multiple pump control system |
DE2445979A1 (de) * | 1973-10-01 | 1975-04-10 | Sargent Industries | Steuereinrichtung fuer mehrere motorisch angetriebene pumpen |
-
1978
- 1978-04-13 GB GB1454778A patent/GB1566385A/en not_active Expired
- 1978-04-26 CA CA301,984A patent/CA1085267A/en not_active Expired
- 1978-06-28 FR FR7819319A patent/FR2397548A1/fr active Granted
- 1978-07-05 DE DE19782829551 patent/DE2829551A1/de not_active Withdrawn
- 1978-07-05 JP JP8107578A patent/JPS5419071A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
JPS5419071A (en) | 1979-02-13 |
DE2829551A1 (de) | 1979-01-25 |
GB1566385A (en) | 1980-04-30 |
FR2397548B1 (de) | 1984-06-29 |
FR2397548A1 (fr) | 1979-02-09 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CA1184830A (en) | Fluid system with flow compensated torque control | |
US3994133A (en) | Automatic control device for the distribution of hydraulic fluid between two hydraulic circuits | |
US5067389A (en) | Load check and pressure compensating valve | |
US3998134A (en) | Load responsive fluid control valves | |
US4122865A (en) | Load responsive fluid control valve | |
US4914913A (en) | Load responsive flow amplified control system for power steering | |
US3995532A (en) | Proportional control valve with preconditioned inlet modulating relief valve | |
US3631890A (en) | Flow extending bypass valve | |
US4141280A (en) | Dual pump flow combining system | |
US5077972A (en) | Load pressure duplicating circuit | |
US3987626A (en) | Controls for multiple variable displacement pumps | |
US3827453A (en) | Directional control valve | |
US4349319A (en) | Pressure and flow compensated control system with constant torque and viscosity sensing over-ride | |
US4065922A (en) | Load lifting and lowering control system | |
CA1085267A (en) | Dual pump flow combining system | |
US4206689A (en) | Priority system | |
US4089168A (en) | Load responsive fluid control valves | |
US4096694A (en) | Control system for a fluid drive | |
US4121501A (en) | Flow combining system for dual pumps | |
US4515181A (en) | Flow control valve assembly wth quick response | |
US4583624A (en) | Fluid system with selective differential pressure control | |
US4138929A (en) | Pressure responsive check valve | |
US4194532A (en) | Control valve with bypass means | |
US3150685A (en) | Hydraulic control with mechanically vented pump unloading means | |
US3977301A (en) | Low-effort proportional control valve |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
MKEX | Expiry |