JPS4865382A - - Google Patents
Info
- Publication number
- JPS4865382A JPS4865382A JP47124012A JP12401272A JPS4865382A JP S4865382 A JPS4865382 A JP S4865382A JP 47124012 A JP47124012 A JP 47124012A JP 12401272 A JP12401272 A JP 12401272A JP S4865382 A JPS4865382 A JP S4865382A
- Authority
- JP
- Japan
- 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
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2278—Hydraulic circuits
- E02F9/2296—Systems with a variable displacement pump
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2221—Control of flow rate; Load sensing arrangements
- E02F9/2239—Control of flow rate; Load sensing arrangements using two or more pumps with cross-assistance
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2278—Hydraulic circuits
- E02F9/2292—Systems with 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
- 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
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
- F15B13/08—Assemblies of units, each for the control of a single servomotor only
-
- 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
- F15B2211/20546—Type of pump variable capacity
- F15B2211/20553—Type of pump variable capacity with pilot circuit, e.g. for controlling a swash plate
-
- 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
- F15B2211/3056—Assemblies of multiple valves
- F15B2211/3059—Assemblies of multiple valves having multiple valves for multiple output members
- F15B2211/30595—Assemblies of multiple valves having multiple valves for multiple output members with additional valves between the groups of valves for multiple output members
-
- 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
- F15B2211/31—Directional control characterised by the positions of the valve element
- F15B2211/3105—Neutral or centre positions
- F15B2211/3116—Neutral or centre positions the pump port being open in the centre position, e.g. so-called open centre
-
- 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
- F15B2211/355—Pilot pressure control
-
- 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
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
- F15B2211/76—Control of force or torque of the output member
- F15B2211/763—Control of torque of the output member by means of a variable capacity motor, i.e. by a secondary control on the motor
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/8593—Systems
- Y10T137/87169—Supply and exhaust
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Fluid-Pressure Circuits (AREA)
- Operation Control Of Excavators (AREA)
- Multiple-Way Valves (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US20702871A | 1971-12-13 | 1971-12-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS4865382A true JPS4865382A (ja) | 1973-09-08 |
Family
ID=22768912
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP47124012A Pending JPS4865382A (ja) | 1971-12-13 | 1972-12-12 | |
JP1980035746U Pending JPS55134505U (ja) | 1971-12-13 | 1980-03-17 |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1980035746U Pending JPS55134505U (ja) | 1971-12-13 | 1980-03-17 |
Country Status (8)
Country | Link |
---|---|
US (1) | US3759292A (ja) |
JP (2) | JPS4865382A (ja) |
BE (1) | BE792618A (ja) |
CA (1) | CA976839A (ja) |
DE (1) | DE2261626C2 (ja) |
FR (1) | FR2163536B1 (ja) |
GB (1) | GB1413689A (ja) |
SE (1) | SE390199B (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5880033A (ja) * | 1981-11-02 | 1983-05-14 | Kobe Steel Ltd | 油圧シヨベルの油圧回路 |
EP0286683A1 (en) * | 1986-09-01 | 1988-10-19 | Hitachi Construction Machinery Co., Ltd. | Hydraulic pilot type direction control valve |
CN111051707A (zh) * | 2017-08-15 | 2020-04-21 | 伊顿智能动力有限公司 | 滑阀 |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4078681A (en) * | 1976-08-24 | 1978-03-14 | Caterpillar Tractor Co. | Dual pump hydraulic control system with predetermined flow crossover provision |
US4280397A (en) * | 1978-04-27 | 1981-07-28 | Joy Manufacturing Company | Hydraulic fluid control apparatus |
WO1980001940A1 (en) * | 1979-03-05 | 1980-09-18 | Mcwilliams O | Balanced spool valve |
DE3044171A1 (de) * | 1980-11-24 | 1982-06-16 | Linde Ag, 6200 Wiesbaden | Antriebssystem mit mindestens zwei teilsystemen |
JPS57120704A (en) * | 1981-01-19 | 1982-07-27 | Toshiba Mach Co Ltd | Confluent composite control valve |
JPS59186502U (ja) * | 1983-05-31 | 1984-12-11 | 株式会社小松製作所 | 方向切換弁 |
DE3415621C3 (de) * | 1983-06-13 | 1997-07-17 | Husco Int Inc | Hydraulisches Mehrwege-Steuerventil |
US6397890B1 (en) * | 1999-02-15 | 2002-06-04 | Case Corp. | Variable metering fluid control valve |
ITBO20000473A1 (it) * | 2000-07-31 | 2002-01-31 | Hydrocontrol S P A | Distributore oleodinamico , per il controllo dell' azionamento di un decespugliatore . |
JP5087047B2 (ja) * | 2009-06-18 | 2012-11-28 | 日立建機株式会社 | 油圧作業機械 |
CN102947599B (zh) * | 2010-06-22 | 2015-03-11 | 日立建机株式会社 | 作业车辆的液压控制装置 |
US10024445B2 (en) * | 2014-06-25 | 2018-07-17 | Parker-Hannifin Corporation | Reverse flow check valve in hydraulic valve with series circuit |
US9387759B2 (en) | 2014-09-22 | 2016-07-12 | Caterpillar Inc. | Flow divider free wheeling valve |
JP6643913B2 (ja) * | 2016-02-16 | 2020-02-12 | 株式会社クボタ | 油圧ブロック |
US11460053B2 (en) * | 2020-03-16 | 2022-10-04 | Parker-Hannifin Corporation | Open center control valve configured to combine fluid flow received from multiple sources |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2879612A (en) * | 1956-05-02 | 1959-03-31 | Gar Wood Ind Inc | Hydraulic drive for ditcher conveyor |
US2979908A (en) * | 1960-01-04 | 1961-04-18 | Warner Swasey Co | Hydraulic control systems |
DE1159764B (de) * | 1960-06-07 | 1963-12-19 | Fritz Spierig Fa | Hydraulische Steuereinrichtung zum Betrieb von hydraulisch betaetigten Arbeitsgeraeten |
NL125372C (ja) * | 1962-04-30 | 1900-01-01 | ||
AT246516B (de) * | 1964-07-24 | 1966-04-25 | Prerovske Strojirny Np | Hydraulische Steuerung |
GB1045030A (en) * | 1964-09-30 | 1966-10-05 | Dowty Hydraulic Units Ltd | Fluid valves |
DE1952034A1 (de) * | 1969-10-15 | 1971-04-22 | Linde Ag | Steuereinrichtung fuer eine hydraulische Anlage und Ventil hierzu |
-
0
- BE BE792618D patent/BE792618A/xx not_active IP Right Cessation
-
1971
- 1971-12-13 US US00207028A patent/US3759292A/en not_active Expired - Lifetime
-
1972
- 1972-12-06 CA CA158,167A patent/CA976839A/en not_active Expired
- 1972-12-12 SE SE7216212A patent/SE390199B/xx unknown
- 1972-12-12 JP JP47124012A patent/JPS4865382A/ja active Pending
- 1972-12-12 FR FR7244207A patent/FR2163536B1/fr not_active Expired
- 1972-12-13 DE DE2261626A patent/DE2261626C2/de not_active Expired
- 1972-12-13 GB GB5758172A patent/GB1413689A/en not_active Expired
-
1980
- 1980-03-17 JP JP1980035746U patent/JPS55134505U/ja active Pending
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5880033A (ja) * | 1981-11-02 | 1983-05-14 | Kobe Steel Ltd | 油圧シヨベルの油圧回路 |
JPS6311494B2 (ja) * | 1981-11-02 | 1988-03-14 | Kobe Steel Ltd | |
EP0286683A1 (en) * | 1986-09-01 | 1988-10-19 | Hitachi Construction Machinery Co., Ltd. | Hydraulic pilot type direction control valve |
EP0286683B1 (en) * | 1986-09-01 | 1993-12-15 | Hitachi Construction Machinery Co., Ltd. | Hydraulic pilot type direction control valve |
CN111051707A (zh) * | 2017-08-15 | 2020-04-21 | 伊顿智能动力有限公司 | 滑阀 |
CN111051707B (zh) * | 2017-08-15 | 2023-02-28 | 丹佛斯动力系统Ii技术有限公司 | 滑阀 |
Also Published As
Publication number | Publication date |
---|---|
FR2163536B1 (ja) | 1978-08-04 |
JPS55134505U (ja) | 1980-09-24 |
US3759292A (en) | 1973-09-18 |
DE2261626C2 (de) | 1985-08-29 |
GB1413689A (en) | 1975-11-12 |
FR2163536A1 (ja) | 1973-07-27 |
SE390199B (sv) | 1976-12-06 |
DE2261626A1 (de) | 1973-06-14 |
BE792618A (fr) | 1973-06-12 |
CA976839A (en) | 1975-10-28 |