JP5102656B2 - 建設機械用油圧回路 - Google Patents
建設機械用油圧回路 Download PDFInfo
- Publication number
- JP5102656B2 JP5102656B2 JP2008057134A JP2008057134A JP5102656B2 JP 5102656 B2 JP5102656 B2 JP 5102656B2 JP 2008057134 A JP2008057134 A JP 2008057134A JP 2008057134 A JP2008057134 A JP 2008057134A JP 5102656 B2 JP5102656 B2 JP 5102656B2
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- JP
- Japan
- Prior art keywords
- signal line
- switching valve
- hydraulic
- signal
- switching
- Prior art date
- 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.)
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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
- F15B11/17—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors using 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
-
- 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
-
- 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
- E02F9/2246—Control of prime movers, e.g. depending on the hydraulic load of work tools
-
- 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
- E02F9/2282—Systems using center bypass type changeover valves
-
- 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
- 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
- F15B2211/32—Directional control characterised by the type of actuation
- F15B2211/329—Directional control characterised by the type of actuation actuated by fluid pressure
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- Operation Control Of Excavators (AREA)
- Fluid-Pressure Circuits (AREA)
- Component Parts Of Construction Machinery (AREA)
Description
21 第1絞縮部
22 第2絞縮部
23 第3絞縮部
31 合流切換弁用信号ライン
32、33 作業装置用信号ライン
34 走行装置用信号ライン
35 信号ライン
41 シャトル弁
42、43 チェック弁
70 信号圧排出用ポート
P1 第1油圧ポンプ
P2 第2油圧ポンプ
P3 第3油圧ポンプ
A、B、C 作業装置用切換弁
D 走行装置用切換弁
Claims (4)
- 第1、2、3油圧ポンプと、
前記第1油圧ポンプの流路に設けられ、切換時、作業装置に供給される作動油をそれぞれ制御する複数の弁からなる第1切換弁と、
前記第2油圧ポンプの流路に設けられ、切換時、作業装置に供給される作動油をそれぞれ制御する複数の弁からなる第2切換弁と、
前記第3油圧ポンプの流路に設けられ、切換時、作業装置に供給される作動油をそれぞれ制御する複数の弁からなる第3切換弁と、
前記第1油圧ポンプと第2油圧ポンプの流路上流側にそれぞれ設けられ、切換時、左側及び右側の走行装置に供給される作動油をそれぞれ制御する弁からなる第4切換弁と、
前記第3油圧ポンプの流路下流側に設けられ、信号ラインに供給される信号圧により切り換えられる際、第3油圧ポンプの作動油を第1油圧ポンプ側の作業装置と、第2油圧ポンプ側の作業装置のうち、何れかの一つに供給する合流切換弁と、
前記合流切換弁用信号ラインに接続され、第4切換弁の切換時、信号圧力が形成される走行装置用信号ラインと、
前記合流切換弁用信号ラインに接続され、第1、2、3の切換弁のうち、何れかの一つを切り換える際に信号圧力が形成される作業装置用信号ラインと、
前記走行装置用信号ラインと合流切換弁用信号ラインに接続する信号ラインに接続される流路と、合流切換弁用信号ラインと作業装置用信号ラインに分岐接続される流路の交差点に設けられ、走行装置用信号ラインに形成の信号圧力と、作業装置用信号ラインに形成の信号圧力のうち、何れかの一つを選択するシャトル弁とを含むことを特徴とする建設機械用油圧回路。 - 前記走行装置用信号ラインに形成の信号圧力を走行昇圧用又は走行報知用信号圧として用いることができるように走行装置用信号ラインに設けられる信号圧排出用ポートを含めることを特徴とする請求項1に記載の建設機械用油圧回路。
- 前記第4切換弁の切換時、走行装置用信号ラインに信号圧力が形成されるように前記走行装置用信号ラインと合流切換弁用信号ラインに分岐接続される信号ラインに設けられるチェック弁を含めることを特徴とする請求項1に記載の建設機械用油圧回路。
- 前記第1、2切換弁のうち、何れかの一つを切り換える時、作業装置用信号ラインに信号圧力が形成されるように前記合流切換弁用信号ラインと作業装置用信号ラインに接続する流路に設けられるチェック弁を含めることを特徴とする請求項1に記載の建設機械用油圧回路。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2007-0024030 | 2007-03-12 | ||
KR1020070024030A KR100886476B1 (ko) | 2007-03-12 | 2007-03-12 | 건설기계용 유압회로 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2008224034A JP2008224034A (ja) | 2008-09-25 |
JP5102656B2 true JP5102656B2 (ja) | 2012-12-19 |
Family
ID=39535215
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2008057134A Active JP5102656B2 (ja) | 2007-03-12 | 2008-03-07 | 建設機械用油圧回路 |
Country Status (5)
Country | Link |
---|---|
US (1) | US7913490B2 (ja) |
EP (1) | EP1970571B1 (ja) |
JP (1) | JP5102656B2 (ja) |
KR (1) | KR100886476B1 (ja) |
CN (1) | CN101265712B (ja) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8607557B2 (en) * | 2009-06-22 | 2013-12-17 | Volvo Construction Equipment Holding Sweden Ab | Hydraulic control system for excavator |
EP2466017A1 (en) | 2010-12-14 | 2012-06-20 | Caterpillar, Inc. | Closed loop drive circuit with open circuit pump assist for high speed travel |
US9394924B2 (en) | 2011-02-07 | 2016-07-19 | Caterpillar Inc. | Hydrostatic system configured to be integrated in an excavator |
JP2013245787A (ja) * | 2012-05-28 | 2013-12-09 | Hitachi Constr Mach Co Ltd | 作業機械の駆動装置 |
JP6004900B2 (ja) * | 2012-11-07 | 2016-10-12 | Kyb株式会社 | パワーショベルの流体圧制御装置 |
JP6334885B2 (ja) * | 2013-10-15 | 2018-05-30 | 川崎重工業株式会社 | 油圧駆動システム |
KR102083034B1 (ko) * | 2013-12-26 | 2020-04-14 | 두산인프라코어 주식회사 | 굴삭기의 메인 컨트롤 밸브 |
CN103742615B (zh) * | 2013-12-31 | 2016-08-17 | 广船国际有限公司 | 一种重载生产线链条的自动张紧液压装置 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57184137A (en) * | 1981-05-06 | 1982-11-12 | Hitachi Constr Mach Co Ltd | Oil-pressure circuit for oil-pressure working machine |
JPH0649632Y2 (ja) | 1987-06-10 | 1994-12-14 | 油谷重工株式会社 | 油圧ショベルの油圧回路 |
WO1989012756A1 (en) * | 1988-06-17 | 1989-12-28 | Kabushiki Kaisha Kobe Seiko Sho | Fluid control mechanism for power shovels |
JP3139792B2 (ja) * | 1991-10-08 | 2001-03-05 | カヤバ工業株式会社 | 建設車両の直進走行回路 |
JP3681833B2 (ja) * | 1996-09-19 | 2005-08-10 | ヤンマー株式会社 | 掘削旋回作業機の油圧回路 |
US5940997A (en) * | 1997-09-05 | 1999-08-24 | Hitachi Construction Machinery Co., Ltd. | Hydraulic circuit system for hydraulic working machine |
JP3660501B2 (ja) * | 1998-05-28 | 2005-06-15 | 日立建機株式会社 | 建設機械のエンジン回転数制御装置 |
JP4137431B2 (ja) * | 2001-11-09 | 2008-08-20 | ナブテスコ株式会社 | 油圧回路 |
JP3992612B2 (ja) * | 2002-12-26 | 2007-10-17 | 株式会社クボタ | バックホウの油圧回路構造 |
KR100518770B1 (ko) * | 2003-02-12 | 2005-10-05 | 볼보 컨스트럭션 이키프먼트 홀딩 스웨덴 에이비 | 중장비 옵션장치용 유압시스템 |
KR100946137B1 (ko) * | 2004-12-15 | 2010-03-10 | 현대중공업 주식회사 | 콘트롤 밸브의 신호라인 제어시스템 |
KR100800080B1 (ko) * | 2006-08-11 | 2008-02-01 | 볼보 컨스트럭션 이키프먼트 홀딩 스웨덴 에이비 | 건설기계의 유압회로 |
-
2007
- 2007-03-12 KR KR1020070024030A patent/KR100886476B1/ko active IP Right Grant
-
2008
- 2008-03-07 US US12/075,038 patent/US7913490B2/en active Active
- 2008-03-07 JP JP2008057134A patent/JP5102656B2/ja active Active
- 2008-03-11 EP EP08004459.7A patent/EP1970571B1/en active Active
- 2008-03-12 CN CN2008100827659A patent/CN101265712B/zh active Active
Also Published As
Publication number | Publication date |
---|---|
EP1970571B1 (en) | 2013-11-06 |
EP1970571A2 (en) | 2008-09-17 |
CN101265712B (zh) | 2012-12-05 |
KR20080083451A (ko) | 2008-09-18 |
US20080223027A1 (en) | 2008-09-18 |
CN101265712A (zh) | 2008-09-17 |
US7913490B2 (en) | 2011-03-29 |
EP1970571A3 (en) | 2012-04-11 |
KR100886476B1 (ko) | 2009-03-05 |
JP2008224034A (ja) | 2008-09-25 |
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