BE857111A - Installation de commande hydraulique a deux pompes, notamment, pour engins de travaux publics - Google Patents
Installation de commande hydraulique a deux pompes, notamment, pour engins de travaux publicsInfo
- Publication number
- BE857111A BE857111A BE179598A BE179598A BE857111A BE 857111 A BE857111 A BE 857111A BE 179598 A BE179598 A BE 179598A BE 179598 A BE179598 A BE 179598A BE 857111 A BE857111 A BE 857111A
- Authority
- BE
- Belgium
- Prior art keywords
- hydraulic control
- pump hydraulic
- control installation
- public works
- works equipment
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D11/00—Steering non-deflectable wheels; Steering endless tracks or the like
- B62D11/02—Steering non-deflectable wheels; Steering endless tracks or the like by differentially driving ground-engaging elements on opposite vehicle sides
- B62D11/06—Steering non-deflectable wheels; Steering endless tracks or the like by differentially driving ground-engaging elements on opposite vehicle sides by means of a single main power source
- B62D11/10—Steering non-deflectable wheels; Steering endless tracks or the like by differentially driving ground-engaging elements on opposite vehicle sides by means of a single main power source using gearings with differential power outputs on opposite sides, e.g. twin-differential or epicyclic gears
- B62D11/14—Steering non-deflectable wheels; Steering endless tracks or the like by differentially driving ground-engaging elements on opposite vehicle sides by means of a single main power source using gearings with differential power outputs on opposite sides, e.g. twin-differential or epicyclic gears differential power outputs being effected by additional power supply to one side, e.g. power originating from secondary power source
- B62D11/18—Steering non-deflectable wheels; Steering endless tracks or the like by differentially driving ground-engaging elements on opposite vehicle sides by means of a single main power source using gearings with differential power outputs on opposite sides, e.g. twin-differential or epicyclic gears differential power outputs being effected by additional power supply to one side, e.g. power originating from secondary power source the additional power supply being supplied hydraulically
-
- 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
-
- 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
-
- 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
- F15B2211/20546—Type of pump variable 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
- F15B2211/31—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
- F15B2211/32—Directional control characterised by the type of actuation
- F15B2211/329—Directional 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
- F15B2211/40—Flow control
- F15B2211/405—Flow control characterised by the type of flow control means or valve
- F15B2211/40515—Flow control characterised by the type of flow control means or valve with variable throttles or orifices
-
- 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
- F15B2211/40—Flow control
- F15B2211/415—Flow control characterised by the connections of the flow control means in the circuit
- F15B2211/41554—Flow control characterised by the connections of the flow control means in the circuit being connected to a return line and a 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
- F15B2211/40—Flow control
- F15B2211/42—Flow control characterised by the type of actuation
- F15B2211/428—Flow 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
- F15B2211/40—Flow control
- F15B2211/46—Control of flow in the return line, i.e. meter-out 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
- F15B2211/60—Circuit components or control therefor
- F15B2211/635—Circuits providing pilot pressure to pilot pressure-controlled fluid circuit elements
- F15B2211/6355—Circuits providing pilot pressure to pilot pressure-controlled fluid circuit elements having valve means
-
- 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
- F15B2211/67—Methods for controlling pilot 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
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
- F15B2211/71—Multiple output members, e.g. multiple hydraulic motors or cylinders
- F15B2211/7142—Multiple output members, e.g. multiple hydraulic motors or cylinders the output members being arranged in multiple groups
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Operation Control Of Excavators (AREA)
- Fluid-Pressure Circuits (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US05/717,426 US4078681A (en) | 1976-08-24 | 1976-08-24 | Dual pump hydraulic control system with predetermined flow crossover provision |
Publications (1)
Publication Number | Publication Date |
---|---|
BE857111A true BE857111A (fr) | 1978-01-25 |
Family
ID=24881984
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BE179598A BE857111A (fr) | 1976-08-24 | 1977-07-25 | Installation de commande hydraulique a deux pompes, notamment, pour engins de travaux publics |
Country Status (7)
Country | Link |
---|---|
US (1) | US4078681A (de) |
JP (1) | JPS5325774A (de) |
BE (1) | BE857111A (de) |
BR (1) | BR7704570A (de) |
CA (1) | CA1040511A (de) |
DE (1) | DE2736804A1 (de) |
FR (1) | FR2363016A1 (de) |
Families Citing this family (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4171054A (en) * | 1976-12-28 | 1979-10-16 | Kubota, Ltd. | Work vehicle with hydraulic circuit for swivel motor and work assembly arm motor |
US4147034A (en) * | 1978-04-19 | 1979-04-03 | Caterpillar Tractor Co. | Hydraulic system with priority control |
JPS566901A (en) * | 1979-06-27 | 1981-01-24 | Hitachi Constr Mach Co Ltd | Hydraulic circuit for construction equipment |
JPS5652447A (en) * | 1979-10-02 | 1981-05-11 | Nec Corp | Working set control system |
JPS56501459A (de) * | 1979-11-01 | 1981-10-08 | ||
US4354420A (en) * | 1979-11-01 | 1982-10-19 | Caterpillar Tractor Co. | Fluid motor control system providing speed change by combination of displacement and flow control |
JPS57120704A (en) * | 1981-01-19 | 1982-07-27 | Toshiba Mach Co Ltd | Confluent composite control valve |
JPS58500768A (ja) * | 1981-05-22 | 1983-05-12 | キヤタピラ− トラツクタ− カンパニ− | 流体制御システム |
US4454715A (en) * | 1981-05-22 | 1984-06-19 | Caterpillar Tractor Co. | Fluid control system |
JPS581671U (ja) * | 1981-06-26 | 1983-01-07 | 石川島播磨重工業株式会社 | 掘削機の油圧回路 |
JPS581670U (ja) * | 1981-06-26 | 1983-01-07 | 石川島播磨重工業株式会社 | 掘削機の油圧回路 |
JPH076530B2 (ja) * | 1986-09-27 | 1995-01-30 | 日立建機株式会社 | 油圧ショベルの油圧回路 |
KR920006520B1 (ko) * | 1988-06-17 | 1992-08-07 | 가부시끼가이샤 고오베세이꼬오쇼 | 파우어 셔블의 유체제어기구 |
US5446979A (en) * | 1992-04-20 | 1995-09-05 | Hitachi Construction Machinery Co., Ltd. | Hydraulic circuit system for civil engineering and construction machines |
US5590730A (en) * | 1994-11-04 | 1997-01-07 | Samsung Heavy Industry Co., Ltd. | Straight travelling apparatus for construction vehicles |
JPH08100806A (ja) * | 1994-11-10 | 1996-04-16 | Kayaba Ind Co Ltd | 油圧制御回路 |
JP3511425B2 (ja) * | 1995-09-18 | 2004-03-29 | 日立建機株式会社 | 油圧システム |
AU720849B2 (en) * | 1996-03-28 | 2000-06-15 | Clark Equipment Company | Multifunction valve stack |
US6018895A (en) * | 1996-03-28 | 2000-02-01 | Clark Equipment Company | Valve stack in a mini-excavator directing fluid under pressure from multiple pumps to actuable elements |
US5984436A (en) * | 1997-12-19 | 1999-11-16 | Caterpillar Inc. | Hydraulic track tensioning circuit |
US6145287A (en) * | 1998-03-05 | 2000-11-14 | Sauer Inc. | Hydrostatic circuit for harvesting machine |
US6357231B1 (en) * | 2000-05-09 | 2002-03-19 | Clark Equipment Company | Hydraulic pump circuit for mini excavators |
US20070044464A1 (en) * | 2005-08-31 | 2007-03-01 | Caterpillar Inc. and | Combiner valve control system and method |
US7559197B2 (en) | 2005-08-31 | 2009-07-14 | Caterpillar Inc. | Combiner valve control system and method |
US7412827B2 (en) * | 2005-09-30 | 2008-08-19 | Caterpillar Inc. | Multi-pump control system and method |
JP6080458B2 (ja) * | 2012-09-28 | 2017-02-15 | 株式会社アイチコーポレーション | クローラ式走行車両 |
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 (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1952034A1 (de) * | 1969-10-15 | 1971-04-22 | Linde Ag | Steuereinrichtung fuer eine hydraulische Anlage und Ventil hierzu |
FR2112594A5 (de) * | 1970-10-27 | 1972-06-23 | Orsta Hydraulik Veb K | |
DE2138986C3 (de) * | 1971-08-04 | 1978-09-07 | G.L. Rexroth Gmbh, 8770 Lohr | Steuerventileinrichtung für mehrere hydraulische Antriebe |
BE792618A (fr) * | 1971-12-13 | 1973-06-12 | Caterpillar Tractor Co | Ensemble de valves de commande hydrauliques. |
BE792617A (fr) * | 1971-12-13 | 1973-06-12 | Caterpillar Tractor Co | Circuit hydraulique pour un excavateur. |
US3922855A (en) * | 1971-12-13 | 1975-12-02 | Caterpillar Tractor Co | Hydraulic circuitry for an excavator |
US4030623A (en) * | 1971-12-13 | 1977-06-21 | Caterpillar Tractor Co. | Hydraulic circuitry for an excavator |
DE2440251A1 (de) * | 1974-08-22 | 1976-03-04 | Linde Ag | Schaltung fuer zwei kreislaeufe zur vereinigung der foerderstroeme beider pumpen |
-
1976
- 1976-08-24 US US05/717,426 patent/US4078681A/en not_active Expired - Lifetime
-
1977
- 1977-03-08 CA CA273,436A patent/CA1040511A/en not_active Expired
- 1977-06-01 FR FR7716761A patent/FR2363016A1/fr active Granted
- 1977-06-08 JP JP6777377A patent/JPS5325774A/ja active Pending
- 1977-07-12 BR BR7704570A patent/BR7704570A/pt unknown
- 1977-07-25 BE BE179598A patent/BE857111A/xx not_active IP Right Cessation
- 1977-08-16 DE DE19772736804 patent/DE2736804A1/de not_active Ceased
Also Published As
Publication number | Publication date |
---|---|
FR2363016B1 (de) | 1981-11-20 |
JPS5325774A (en) | 1978-03-09 |
BR7704570A (pt) | 1978-05-02 |
CA1040511A (en) | 1978-10-17 |
DE2736804A1 (de) | 1978-03-02 |
US4078681A (en) | 1978-03-14 |
FR2363016A1 (fr) | 1978-03-24 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
RE | Patent lapsed |
Owner name: CATERPILLAR INC. Effective date: 19870731 |