IN171522B - - Google Patents
Info
- Publication number
- IN171522B IN171522B IN539/CAL/88A IN539CA1988A IN171522B IN 171522 B IN171522 B IN 171522B IN 539CA1988 A IN539CA1988 A IN 539CA1988A IN 171522 B IN171522 B IN 171522B
- Authority
- IN
- India
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
- F15B9/00—Servomotors with follow-up action, e.g. obtained by feed-back control, i.e. in which the position of the actuated member conforms with that of the controlling member
- F15B9/02—Servomotors with follow-up action, e.g. obtained by feed-back control, i.e. in which the position of the actuated member conforms with that of the controlling member with servomotors of the reciprocatable or oscillatable type
- F15B9/08—Servomotors with follow-up action, e.g. obtained by feed-back control, i.e. in which the position of the actuated member conforms with that of the controlling member with servomotors of the reciprocatable or oscillatable type controlled by valves affecting the fluid feed or the fluid outlet of the servomotor
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- 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
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
- F15B13/0401—Valve members; Fluid interconnections therefor
- F15B13/0405—Valve members; Fluid interconnections therefor for seat valves, i.e. poppet valves
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- 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
- E02F9/2225—Control of flow rate; Load sensing arrangements using pressure-compensating valves
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- 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
- E02F9/2232—Control of flow rate; Load sensing arrangements using one or more variable displacement pumps
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- 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
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- 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
- Y10T137/87193—Pilot-actuated
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Fluid-Pressure Circuits (AREA)
- Operation Control Of Excavators (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16270387 | 1987-06-30 | ||
JP23499287 | 1987-09-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
IN171522B true IN171522B (pl) | 1992-11-07 |
Family
ID=26488401
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IN539/CAL/88A IN171522B (pl) | 1987-06-30 | 1988-06-30 |
Country Status (7)
Country | Link |
---|---|
US (1) | US4945723A (pl) |
EP (1) | EP0297682B1 (pl) |
KR (1) | KR920007653B1 (pl) |
CN (1) | CN1011526B (pl) |
AU (1) | AU603907B2 (pl) |
DE (1) | DE3876518T2 (pl) |
IN (1) | IN171522B (pl) |
Families Citing this family (33)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IN171213B (pl) * | 1988-01-27 | 1992-08-15 | Hitachi Construction Machinery | |
KR930000302B1 (ko) * | 1988-02-24 | 1993-01-15 | 히다찌 겐끼 가부시기가이샤 | 밸브장치 |
EP0362409B1 (en) * | 1988-03-23 | 1992-07-22 | Hitachi Construction Machinery Co., Ltd. | Hydraulic driving unit |
US5186000A (en) * | 1988-05-10 | 1993-02-16 | Hitachi Construction Machinery Co., Ltd. | Hydraulic drive system for construction machines |
KR940009219B1 (ko) * | 1989-03-30 | 1994-10-01 | 히다찌 겐끼 가부시기가이샤 | 장궤식차량의 유압구동장치 |
DE69120818T2 (de) * | 1990-05-15 | 1996-12-05 | Kabushiki Kaisha Komatsu Seisakusho, Tokio/Tokyo | Hydraulisches system |
US5137254A (en) * | 1991-09-03 | 1992-08-11 | Caterpillar Inc. | Pressure compensated flow amplifying poppet valve |
US5170692A (en) * | 1991-11-04 | 1992-12-15 | Vickers, Incorporated | Hydraulic control system |
WO1993009350A1 (en) * | 1991-11-04 | 1993-05-13 | Caterpillar Inc. | Pressure compensated flow amplifying poppet valve |
AU1087997A (en) * | 1995-12-15 | 1997-07-14 | Commercial Intertech Limited | Control valves |
US6050090A (en) * | 1996-06-11 | 2000-04-18 | Kabushiki Kaisha Kobe Seiko Sho | Control apparatus for hydraulic excavator |
JP3567051B2 (ja) * | 1996-06-12 | 2004-09-15 | 新キャタピラー三菱株式会社 | 油圧アクチュエータ用の操作制御装置 |
US6293181B1 (en) | 1998-04-16 | 2001-09-25 | Caterpillar Inc. | Control system providing a float condition for a hydraulic cylinder |
US6089528A (en) * | 1998-12-18 | 2000-07-18 | Caterpillar Inc. | Poppet valve control with sealing element providing improved load drift control |
DE19904616A1 (de) | 1999-02-05 | 2000-08-10 | Mannesmann Rexroth Ag | Steueranordnung für wenigstens zwei hydraulische Verbraucher und Druckdifferenzventil dafür |
US6360538B1 (en) | 1999-07-27 | 2002-03-26 | Caterpillar Inc. | Method and an apparatus for an electro-hydraulic system on a work machine |
US6173572B1 (en) | 1999-09-23 | 2001-01-16 | Caterpillar Inc. | Method and apparatus for controlling a bypass valve of a fluid circuit |
US6918248B2 (en) * | 2001-04-17 | 2005-07-19 | Caterpillar Inc | Independent metering valve assembly for multiple hydraulic load functions |
DE10340504B4 (de) * | 2003-09-03 | 2006-08-24 | Sauer-Danfoss Aps | Ventilanordnung zur Steuerung eines Hydraulikantriebs |
KR100752115B1 (ko) * | 2004-12-30 | 2007-08-24 | 두산인프라코어 주식회사 | 굴삭기의 유압펌프 제어시스템 |
DE602006006676D1 (de) * | 2006-09-01 | 2009-06-18 | Parker Hannifin Ab | Ventilanordnung |
GB0722669D0 (en) * | 2007-11-20 | 2007-12-27 | Goodrich Control Sys Ltd | Fuel staging system |
CN101851940B (zh) * | 2010-05-12 | 2012-01-11 | 三一重机有限公司 | 挖掘机的液压控制管路 |
EP2461045B1 (de) * | 2010-12-01 | 2013-03-27 | FESTO AG & Co. KG | Ventilanordnung |
JP5849023B2 (ja) * | 2012-06-19 | 2016-01-27 | 株式会社クボタ | 作業機 |
KR101719384B1 (ko) | 2012-09-13 | 2017-03-24 | (주) 한주반도체 | 노즐유닛 |
EP2790072A1 (de) | 2013-04-11 | 2014-10-15 | Siemens Aktiengesellschaft | Hydraulikanordnung mit entkoppeltem Betrieb zweier Ventileinrichtungen |
CN105492698B (zh) * | 2013-08-22 | 2018-05-08 | 洋马株式会社 | 作业车辆 |
JP6262054B2 (ja) * | 2014-03-28 | 2018-01-17 | 株式会社クボタ | 作業機の油圧システム |
US10161112B2 (en) * | 2015-05-22 | 2018-12-25 | Philip Paull | Valve systems and method for enhanced grading control |
DE102015121719A1 (de) * | 2015-12-14 | 2017-06-14 | Abb Schweiz Ag | Ventilanordnung zur hydraulischen Ansteuerung einer Kolben-Zylinderanordnung eines Hoch- oder Mittelspannungsleistungsschalters |
JP6940447B2 (ja) * | 2018-03-28 | 2021-09-29 | 株式会社日立建機ティエラ | 建設機械の油圧駆動装置 |
CN109630491B (zh) * | 2018-12-26 | 2021-01-08 | 太原理工大学 | 一种电控补偿二通比例流量阀 |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2565242A (en) * | 1945-06-18 | 1951-08-21 | Vickers Inc | Flow-control circuit |
US3340897A (en) * | 1965-05-07 | 1967-09-12 | Ohio Brass Co | Fluid control mechanism |
JPS5032378A (pl) * | 1973-07-24 | 1975-03-29 | ||
US4383412A (en) * | 1979-10-17 | 1983-05-17 | Cross Manufacturing, Inc. | Multiple pump load sensing system |
US4362018A (en) * | 1980-06-12 | 1982-12-07 | Kobe Steel, Ltd. | Hydraulic rotation control circuit |
DE3044144A1 (de) * | 1980-11-24 | 1982-09-09 | Linde Ag, 6200 Wiesbaden | Hydrostatisches antriebssystem mit einer einstellbaren pumpe und mehreren verbrauchern |
SE439342C (sv) * | 1981-09-28 | 1996-11-18 | Bo Reiner Andersson | Ventilanordning för styrning av en linjär eller roterande hydraulmotor |
US4437385A (en) * | 1982-04-01 | 1984-03-20 | Deere & Company | Electrohydraulic valve system |
DE3321483A1 (de) * | 1983-06-14 | 1984-12-20 | Linde Ag, 6200 Wiesbaden | Hydraulische einrichtung mit einer pumpe und mindestens zwei von dieser beaufschlagten verbrauchern hydraulischer energie |
JPS60222601A (ja) * | 1984-04-20 | 1985-11-07 | Komatsu Ltd | 油圧制御装置 |
JPS60250131A (ja) * | 1984-05-25 | 1985-12-10 | Kayaba Ind Co Ltd | 油圧制御回路 |
KR910009257B1 (ko) * | 1985-09-07 | 1991-11-07 | 히다찌 겡끼 가부시기가이샤 | 유압건설기계의 제어시스템 |
CN1010794B (zh) * | 1986-01-11 | 1990-12-12 | 日立建机株式会社 | 液压泵输入功率控制系统 |
EP0235545B1 (en) * | 1986-01-25 | 1990-09-12 | Hitachi Construction Machinery Co., Ltd. | Hydraulic drive system |
JPH0349286Y2 (pl) * | 1986-09-01 | 1991-10-22 | ||
IT1195178B (it) * | 1986-09-24 | 1988-10-12 | Chs Vickers Spa | Sistema di recupero di portata per circuiti idraulici con pompe e di stributori compensati in pressione per organi di lavoro di macchine movimento terra |
US4712376A (en) * | 1986-10-22 | 1987-12-15 | Caterpillar Inc. | Proportional valve control apparatus for fluid systems |
JPH05131A (ja) * | 1991-01-09 | 1993-01-08 | Nec Corp | ユーザー個別の心電図診断解析システム |
-
1988
- 1988-06-27 AU AU18426/88A patent/AU603907B2/en not_active Ceased
- 1988-06-29 KR KR888807907A patent/KR920007653B1/ko not_active IP Right Cessation
- 1988-06-29 EP EP19880201351 patent/EP0297682B1/en not_active Expired - Lifetime
- 1988-06-29 US US07/213,179 patent/US4945723A/en not_active Expired - Lifetime
- 1988-06-29 DE DE8888201351T patent/DE3876518T2/de not_active Expired - Lifetime
- 1988-06-30 IN IN539/CAL/88A patent/IN171522B/en unknown
- 1988-06-30 CN CN88104005A patent/CN1011526B/zh not_active Expired
Also Published As
Publication number | Publication date |
---|---|
AU603907B2 (en) | 1990-11-29 |
KR890000799A (ko) | 1989-03-16 |
DE3876518D1 (de) | 1993-01-21 |
AU1842688A (en) | 1989-01-05 |
DE3876518T2 (de) | 1993-05-06 |
CN1031270A (zh) | 1989-02-22 |
KR920007653B1 (en) | 1992-09-14 |
EP0297682A3 (en) | 1989-04-12 |
EP0297682B1 (en) | 1992-12-09 |
EP0297682A2 (en) | 1989-01-04 |
US4945723A (en) | 1990-08-07 |
CN1011526B (zh) | 1991-02-06 |