JPS4944180A - - Google Patents
Info
- Publication number
- JPS4944180A JPS4944180A JP48078009A JP7800973A JPS4944180A JP S4944180 A JPS4944180 A JP S4944180A JP 48078009 A JP48078009 A JP 48078009A JP 7800973 A JP7800973 A JP 7800973A JP S4944180 A JPS4944180 A JP S4944180A
- 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.)
- Granted
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
-
- 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
- F15B13/022—Flow-dividers; Priority 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
- F15B2211/20—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
- F15B2211/2053—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
- F15B2211/30—Directional control
- F15B2211/305—Directional control characterised by the type of valves
- F15B2211/30525—Directional control valves, e.g. 4/3-directional control valve
- F15B2211/3053—In combination with a pressure compensating valve
- F15B2211/30535—In combination with a pressure compensating valve the pressure compensating valve is arranged between pressure source and directional control valve
-
- 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
- F15B2211/3111—Neutral or centre positions the pump port being closed in the centre position, e.g. so-called closed 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
- F15B2211/50—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
- F15B2211/515—Pressure control characterised by the connections of the pressure control means in the circuit
- F15B2211/5157—Pressure control characterised by the connections of the pressure control means in the circuit being connected to a pressure source and a 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
- F15B2211/60—Circuit components or control therefor
- F15B2211/605—Load sensing circuits
- F15B2211/6051—Load sensing circuits having valve means between output member and the load sensing circuit
- F15B2211/6052—Load sensing circuits having valve means between output member and the load sensing circuit using 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
- F15B2211/60—Circuit components or control therefor
- F15B2211/605—Load sensing circuits
- F15B2211/6051—Load sensing circuits having valve means between output member and the load sensing circuit
- F15B2211/6054—Load sensing circuits having valve means between output member and the load sensing circuit using shuttle 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
- F15B2211/60—Circuit components or control therefor
- F15B2211/605—Load sensing circuits
- F15B2211/6051—Load sensing circuits having valve means between output member and the load sensing circuit
- F15B2211/6055—Load sensing circuits having valve means between output member and the load sensing circuit using pressure relief 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
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
- F15B2211/71—Multiple output members, e.g. multiple hydraulic motors or cylinders
- F15B2211/7107—Multiple output members, e.g. multiple hydraulic motors or cylinders the output members being mechanically linked
-
- 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
- F15B2211/78—Control of multiple output members
- F15B2211/781—Control of multiple output members one or more output members having priority
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Operation Control Of Excavators (AREA)
- Fluid-Pressure Circuits (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US27130472A | 1972-07-13 | 1972-07-13 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS4944180A true JPS4944180A (US07655688-20100202-C00010.png) | 1974-04-25 |
| JPS5642764B2 JPS5642764B2 (US07655688-20100202-C00010.png) | 1981-10-07 |
Family
ID=23035019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7800973A Expired JPS5642764B2 (US07655688-20100202-C00010.png) | 1972-07-13 | 1973-07-12 |
Country Status (12)
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5620803A (en) * | 1979-07-27 | 1981-02-26 | Daikin Ind Ltd | Hydraulic circuit |
| JPS58181376A (ja) * | 1982-04-16 | 1983-10-24 | Hitachi Ltd | 電子カメラ用記録ヘツド |
Families Citing this family (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3942413A (en) * | 1974-08-01 | 1976-03-09 | Borg-Warner Corporation | Load limiting system |
| US4199005A (en) * | 1976-08-20 | 1980-04-22 | Tadeusz Budzich | Load responsive control valve |
| US4157736A (en) * | 1978-01-11 | 1979-06-12 | Carbert Ralph E | Overload protection apparatus for hydraulic multi-function equipment |
| US4222409A (en) * | 1978-10-06 | 1980-09-16 | Tadeusz Budzich | Load responsive fluid control valve |
| US4282898A (en) * | 1979-11-29 | 1981-08-11 | Caterpillar Tractor Co. | Flow metering valve with operator selectable boosted flow |
| WO1981001595A1 (en) * | 1979-11-29 | 1981-06-11 | J Harmon | Flow metering valve with operator selectable boosted flow |
| JPS5697023A (en) * | 1980-01-07 | 1981-08-05 | Komatsu Ltd | Semiautomatic oil pressure excavator |
| JPS57116917A (en) * | 1981-01-13 | 1982-07-21 | Toshiba Mach Co Ltd | Compound control valve with valve for attachment |
| US4437307A (en) * | 1982-03-11 | 1984-03-20 | Caterpillar Tractor Company | Priority flow control system |
| US4693272A (en) * | 1984-02-13 | 1987-09-15 | Husco International, Inc. | Post pressure compensated unitary hydraulic valve |
| DE3421502C2 (de) * | 1984-06-08 | 1986-11-20 | Mannesmann Rexroth GmbH, 8770 Lohr | Hydraulische Vorrangsteuereinrichtung für mindestens zwei Servomotoren |
| DE4241846C2 (de) * | 1992-12-11 | 1996-09-26 | Danfoss As | Hydraulisches System |
| KR100226281B1 (ko) * | 1994-09-30 | 1999-10-15 | 토니헬샴 | 가변우선장치 |
| US5615991A (en) * | 1994-09-30 | 1997-04-01 | Samsung Heavy Industries Co., Ltd. | Variable priority device for heavy construction equipment |
| KR100348128B1 (ko) * | 1994-09-30 | 2002-11-22 | 볼보 컨스트럭션 이키프먼트 홀딩 스웨덴 에이비 | 가변우선기능을갖는콘트롤밸브 |
| DE102005060124B4 (de) * | 2005-12-16 | 2011-05-05 | Jost-Werke Gmbh | Verschiebevorrichtung für eine auf einem Zugfahrzeug angeordnete Sattelkupplung |
| JP5485007B2 (ja) * | 2010-05-07 | 2014-05-07 | 日立建機株式会社 | 作業車両の油圧制御装置 |
| JP5758348B2 (ja) * | 2012-06-15 | 2015-08-05 | 住友建機株式会社 | 建設機械の油圧回路 |
| US9725882B2 (en) * | 2013-01-24 | 2017-08-08 | Volvo Construction Equipment Ab | Device and method for controlling flow rate in construction machinery |
| KR20160018548A (ko) * | 2013-06-14 | 2016-02-17 | 볼보 컨스트럭션 이큅먼트 에이비 | 건설기계용 유량 제어밸브 |
| EP2891806A1 (en) * | 2014-01-03 | 2015-07-08 | Danfoss Power Solutions Aps | A hydraulic valve arrangement |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2737196A (en) * | 1952-06-04 | 1956-03-06 | Eaton Mfg Co | Flow divider valve |
| DE1060681B (de) * | 1956-02-02 | 1959-07-02 | Hobourn Eaton Mfg Company Ltd | Selbsttaetiges Steuerventil |
| US2892311A (en) * | 1958-01-08 | 1959-06-30 | Deere & Co | Hydraulic apparatus |
| US3179120A (en) * | 1963-05-24 | 1965-04-20 | Koehring Co | Proportional flow divider |
| US3465519A (en) * | 1967-08-18 | 1969-09-09 | Webster Electric Co Inc | Hydraulic flow controlling apparatus |
| US3550505A (en) * | 1969-05-07 | 1970-12-29 | Gen Signal Corp | Hydraulic system including two work circuits |
| US3631890A (en) * | 1970-04-06 | 1972-01-04 | Borg Warner | Flow extending bypass valve |
-
1972
- 1972-07-13 US US00271304A patent/US3768372A/en not_active Expired - Lifetime
-
1973
- 1973-07-02 GB GB3132573A patent/GB1404562A/en not_active Expired
- 1973-07-03 ZA ZA00734474A patent/ZA734474B/xx unknown
- 1973-07-09 FR FR7325082A patent/FR2193157B1/fr not_active Expired
- 1973-07-09 BE BE133286A patent/BE802106A/xx not_active IP Right Cessation
- 1973-07-10 SE SE7309688A patent/SE398538B/xx unknown
- 1973-07-12 IT IT26534/73A patent/IT991257B/it active
- 1973-07-12 JP JP7800973A patent/JPS5642764B2/ja not_active Expired
- 1973-07-12 CA CA176,343A patent/CA981147A/en not_active Expired
- 1973-07-12 NL NLAANVRAGE7309724,A patent/NL175941B/xx not_active IP Right Cessation
- 1973-07-13 BR BR5241/73A patent/BR7305241D0/pt unknown
- 1973-07-13 DE DE2335704A patent/DE2335704C2/de not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5620803A (en) * | 1979-07-27 | 1981-02-26 | Daikin Ind Ltd | Hydraulic circuit |
| JPS6234961B2 (US07655688-20100202-C00010.png) * | 1979-07-27 | 1987-07-30 | Daikin Kogyo Co Ltd | |
| JPS58181376A (ja) * | 1982-04-16 | 1983-10-24 | Hitachi Ltd | 電子カメラ用記録ヘツド |
Also Published As
| Publication number | Publication date |
|---|---|
| NL7309724A (US07655688-20100202-C00010.png) | 1974-01-15 |
| FR2193157B1 (US07655688-20100202-C00010.png) | 1976-09-17 |
| US3768372A (en) | 1973-10-30 |
| GB1404562A (en) | 1975-09-03 |
| CA981147A (en) | 1976-01-06 |
| SE398538B (sv) | 1977-12-27 |
| ZA734474B (en) | 1975-01-29 |
| DE2335704C2 (de) | 1984-04-26 |
| BR7305241D0 (pt) | 1974-08-15 |
| JPS5642764B2 (US07655688-20100202-C00010.png) | 1981-10-07 |
| DE2335704A1 (de) | 1974-01-24 |
| BE802106A (fr) | 1973-11-05 |
| NL175941B (nl) | 1984-08-16 |
| AU5774773A (en) | 1975-01-09 |
| FR2193157A1 (US07655688-20100202-C00010.png) | 1974-02-15 |
| IT991257B (it) | 1975-07-30 |
