DD297942A5 - Lademaschine mit einer ersten und einer zweiten pumpe zur zufuehrung von druckoel zu mindestens einer hydraulisch angetriebenen arbeitskomponente, wie einem hydraulischen zylinder oder einem hydraulischen motor - Google Patents
Lademaschine mit einer ersten und einer zweiten pumpe zur zufuehrung von druckoel zu mindestens einer hydraulisch angetriebenen arbeitskomponente, wie einem hydraulischen zylinder oder einem hydraulischen motor Download PDFInfo
- Publication number
- DD297942A5 DD297942A5 DD90341816A DD34181690A DD297942A5 DD 297942 A5 DD297942 A5 DD 297942A5 DD 90341816 A DD90341816 A DD 90341816A DD 34181690 A DD34181690 A DD 34181690A DD 297942 A5 DD297942 A5 DD 297942A5
- Authority
- DD
- German Democratic Republic
- Prior art keywords
- pump
- pressure
- hydraulic
- differential pressure
- flow
- Prior art date
Links
- 230000007423 decrease Effects 0.000 claims description 3
- 239000003921 oil Substances 0.000 abstract 2
- 239000012530 fluid Substances 0.000 abstract 1
- 239000010720 hydraulic oil Substances 0.000 abstract 1
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000004907 flux Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F04B1/26—Control
- F04B1/30—Control of machines or pumps with rotary cylinder blocks
- F04B1/32—Control of machines or pumps with rotary cylinder blocks by varying the relative positions of a swash plate and a cylinder block
- F04B1/324—Control of machines or pumps with rotary cylinder blocks by varying the relative positions of a swash plate and a cylinder block by changing the inclination of the swash plate
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/002—Hydraulic systems to change the pump delivery
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
- Operation Control Of Excavators (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE8902253A SE466560B (sv) | 1989-06-21 | 1989-06-21 | Lastmaskin med en foersta och en andra pump foer matning av tryckolja till minst en hydrauliskt driven arbetskomponent saasom enhydraulcylinder eller hydraulmotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DD297942A5 true DD297942A5 (de) | 1992-01-30 |
Family
ID=20376356
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DD90341816A DD297942A5 (de) | 1989-06-21 | 1990-06-19 | Lademaschine mit einer ersten und einer zweiten pumpe zur zufuehrung von druckoel zu mindestens einer hydraulisch angetriebenen arbeitskomponente, wie einem hydraulischen zylinder oder einem hydraulischen motor |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US5165862A (fr) |
| EP (1) | EP0478675B2 (fr) |
| JP (1) | JP2634321B2 (fr) |
| DD (1) | DD297942A5 (fr) |
| DE (1) | DE69004961T3 (fr) |
| ES (1) | ES2046787T5 (fr) |
| SE (1) | SE466560B (fr) |
| WO (1) | WO1990015931A1 (fr) |
Families Citing this family (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5228289A (en) * | 1983-06-29 | 1993-07-20 | Peter Norton | Plural hydraulic pump system with unloading valve |
| US5513732A (en) * | 1994-08-05 | 1996-05-07 | Ford Motor Company | Regulation of hydraulic pressure in a system having multiple pressure sources |
| DE19502235A1 (de) * | 1995-01-25 | 1996-08-08 | Daimler Benz Ag | Ölversorgungssystem |
| US6374606B1 (en) | 1999-03-19 | 2002-04-23 | Caterpillar S.A.R.L. | Dual pump ejector system for articulated trucks and the like having horizontal discharge |
| US6293765B1 (en) * | 2000-05-08 | 2001-09-25 | Sauer-Danfoss Inc. | Tandem fixed displacement pump with torque control |
| US7384183B2 (en) * | 2002-09-06 | 2008-06-10 | Global Ground Support, Llc | Mobile decontamination unit |
| DE102005013458A1 (de) * | 2004-04-20 | 2005-11-10 | ACCULUBE Manufacturing GmbH - Schmiermittel und -geräte - | Vorrichtung und Verfahren zur Bereitstellung eines feinen Ölnebels |
| US8128377B2 (en) * | 2007-04-03 | 2012-03-06 | GM Global Technology Operations LLC | Split-pressure dual pump hydraulic fluid supply system for a multi-speed transmission and method |
| US20090025380A1 (en) | 2007-07-24 | 2009-01-29 | Parker Hannifin Corporation, An Ohio Corporation | Fixed/variable hybrid system |
| US8506267B2 (en) | 2007-09-10 | 2013-08-13 | Schlumberger Technology Corporation | Pump assembly |
| EP2055953B1 (fr) * | 2007-11-01 | 2018-08-15 | Danfoss Power Solutions Aps | Machine de travail pour fluides |
| EP2055942B1 (fr) * | 2007-11-01 | 2012-06-06 | Sauer-Danfoss ApS | Système hydraulique avec pompe supplémentaire |
| DE102007062030A1 (de) * | 2007-12-21 | 2009-06-25 | Robert Bosch Gmbh | Hydraulikfluidpumpe einer Fahrzeugbremsanlage mit einem Fördermittel |
| US20090191068A1 (en) * | 2008-01-29 | 2009-07-30 | Clark Equipment Company | Variable volume reservoir |
| DE102009003306A1 (de) * | 2009-01-05 | 2010-07-08 | Bühler Druckguss AG | Hydraulisches Antriebsaggregat |
| US8801407B2 (en) * | 2010-02-24 | 2014-08-12 | Harris Waste Management Group, Inc. | Hybrid electro-hydraulic power device |
| US20110225962A1 (en) * | 2010-03-22 | 2011-09-22 | Spx Corporation | Variable Speed Hydraulic Pump Apparatus and Method |
| DE102012011953B4 (de) * | 2012-06-18 | 2017-04-13 | Böhner-EH GmbH | Hydraulische Vorrichtung zur Erzeugung unterschiedlicher Fördermengen mit verschiedenen Arbeitsdrücken und Verwendung solchen Vorrichtung in einem Hydrauliksystem |
| CN104192709B (zh) * | 2014-09-22 | 2017-05-03 | 徐州重型机械有限公司 | 一种起重机及其多路阀液压系统 |
| CA3206994A1 (fr) | 2016-09-02 | 2018-03-08 | Halliburton Energy Services, Inc. | Systemes de motorisation hybride pour operations de stimulation de puits |
| NO342938B1 (en) * | 2016-10-06 | 2018-09-03 | Qinterra Tech As | Downhole tractor comprising two or more hydraulic supply lines |
| US11162482B2 (en) | 2017-04-28 | 2021-11-02 | Graco Minnesota Inc. | Portable hydraulic power unit having a pump fixed to an exterior side of a fluid supply tank |
| US12196195B2 (en) * | 2020-06-12 | 2025-01-14 | Deere & Company | Demand based hydraulic pump control system |
| US12540607B2 (en) | 2023-06-23 | 2026-02-03 | Halliburton Energy Services, Inc. | Hybrid drive and distributed power systems for well stimulation operations |
| CN121630820A (zh) * | 2024-09-10 | 2026-03-10 | 福州斯耐特液压有限公司 | 一种升降装置油路系统、升降装置、千斤顶、压机、吊机 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3526468A (en) * | 1968-11-13 | 1970-09-01 | Deere & Co | Multiple pump power on demand hydraulic system |
| US3947194A (en) * | 1972-02-22 | 1976-03-30 | Putzmeister Interholding Gmbh. | Apparatus for damping the pressure increase of hydrostatic drives |
| US3985472A (en) * | 1975-04-23 | 1976-10-12 | International Harvester Company | Combined fixed and variable displacement pump system |
| US4382485A (en) * | 1980-05-27 | 1983-05-10 | Dresser Industries, Inc. | Hydraulic logic control for variable displacement pump |
| JPS6158683A (ja) * | 1984-08-22 | 1986-03-25 | サヴイオ エ チ.ソチエタ ペル アチオ−ニ | パンテイストツキング製造装置 |
-
1989
- 1989-06-21 SE SE8902253A patent/SE466560B/sv not_active IP Right Cessation
-
1990
- 1990-06-19 JP JP2509288A patent/JP2634321B2/ja not_active Expired - Fee Related
- 1990-06-19 EP EP90910156A patent/EP0478675B2/fr not_active Expired - Lifetime
- 1990-06-19 DE DE69004961T patent/DE69004961T3/de not_active Expired - Fee Related
- 1990-06-19 ES ES90910156T patent/ES2046787T5/es not_active Expired - Lifetime
- 1990-06-19 DD DD90341816A patent/DD297942A5/de not_active IP Right Cessation
- 1990-06-19 US US07/778,944 patent/US5165862A/en not_active Expired - Lifetime
- 1990-06-19 WO PCT/SE1990/000435 patent/WO1990015931A1/fr not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| DE69004961T3 (de) | 1999-06-10 |
| JPH04505790A (ja) | 1992-10-08 |
| EP0478675B1 (fr) | 1993-12-01 |
| DE69004961T2 (de) | 1994-03-24 |
| EP0478675A1 (fr) | 1992-04-08 |
| ES2046787T5 (es) | 1999-05-16 |
| WO1990015931A1 (fr) | 1990-12-27 |
| EP0478675B2 (fr) | 1999-02-03 |
| JP2634321B2 (ja) | 1997-07-23 |
| DE69004961D1 (de) | 1994-01-13 |
| SE8902253L (sv) | 1990-12-22 |
| US5165862A (en) | 1992-11-24 |
| SE8902253D0 (sv) | 1989-06-21 |
| SE466560B (sv) | 1992-03-02 |
| ES2046787T3 (es) | 1994-02-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ENJ | Ceased due to non-payment of renewal fee |