JP4139352B2 - 油圧制御装置 - Google Patents
油圧制御装置 Download PDFInfo
- Publication number
- JP4139352B2 JP4139352B2 JP2004148967A JP2004148967A JP4139352B2 JP 4139352 B2 JP4139352 B2 JP 4139352B2 JP 2004148967 A JP2004148967 A JP 2004148967A JP 2004148967 A JP2004148967 A JP 2004148967A JP 4139352 B2 JP4139352 B2 JP 4139352B2
- Authority
- JP
- Japan
- Prior art keywords
- pump
- flow path
- circuit system
- switching valve
- pressure
- 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.)
- Expired - Fee Related
Links
Images
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
- F15B11/161—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors with sensing of servomotor demand or load
- F15B11/167—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors with sensing of servomotor demand or load using pilot pressure to sense the demand
-
- 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
- E02F9/2282—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
- 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
- F15B2211/20576—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
- F15B2211/31—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
- F15B2211/31—Directional control characterised by the positions of the valve element
- F15B2211/3122—Special positions other than the pump port being connected to working ports or the working ports being connected to the return line
- F15B2211/3127—Floating position connecting the working ports and 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
- F15B2211/30—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
- F15B2211/30—Directional control
- F15B2211/35—Directional control combined with flow control
- F15B2211/353—Flow control by regulating means in 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
- F15B2211/70—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
-
- 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)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Fluid-Pressure Circuits (AREA)
- Operation Control Of Excavators (AREA)
Description
P1〜P3 第1〜3ポンプ
5 第2中立流路
6 第2パラレル流路
8 第3中立流路
16 予備用切換弁
40 下流路
41 合流流路
42 開放制御弁
Claims (1)
- 複数のポンプと、それぞれポンプにオープンセンタータイプの切換弁が接続された回路系統とを備え、これら回路系統のうち第1グループ、第2グループの回路系統の下流路を合流させる合流流路に予備用切換弁を設け、複数のポンプからの圧油を予備用切換弁のアクチュエータに供給可能な油圧制御装置において、
前記合流流路の上流にて第2グループの回路系統の下流路に、該下流路を、第1グループの回路系統のポンプの吐出圧と第2グループの回路系統のポンプの吐出圧に応じてタンクに通じる排出流路に開放する開放制御弁を設け、前記開放制御弁は、第1グループの回路系統のポンプの吐出圧が第2グループの回路系統のポンプの吐出圧よりも設定圧以上高いときは、第2グループの回路系統の下流路を前記排出流路に開放し、その設定圧以内のときは第2グループの回路系統の下流路を前記合流流路に開通することを特徴とする油圧制御装置。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004148967A JP4139352B2 (ja) | 2004-05-19 | 2004-05-19 | 油圧制御装置 |
DE200560003980 DE602005003980T2 (de) | 2004-05-19 | 2005-05-18 | Hydraulisches Steuergerät |
EP20050010782 EP1598561B1 (en) | 2004-05-19 | 2005-05-18 | Hydraulic control apparatus |
CNB2005100727619A CN100516555C (zh) | 2004-05-19 | 2005-05-19 | 液压控制装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004148967A JP4139352B2 (ja) | 2004-05-19 | 2004-05-19 | 油圧制御装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2005331011A JP2005331011A (ja) | 2005-12-02 |
JP4139352B2 true JP4139352B2 (ja) | 2008-08-27 |
Family
ID=34936654
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2004148967A Expired - Fee Related JP4139352B2 (ja) | 2004-05-19 | 2004-05-19 | 油圧制御装置 |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1598561B1 (ja) |
JP (1) | JP4139352B2 (ja) |
CN (1) | CN100516555C (ja) |
DE (1) | DE602005003980T2 (ja) |
Families Citing this family (33)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7481052B2 (en) | 2006-04-17 | 2009-01-27 | Clark Equipment Company | Fluid circuit with multiple flows from a series valve |
KR100906228B1 (ko) * | 2007-03-30 | 2009-07-07 | 볼보 컨스트럭션 이키프먼트 홀딩 스웨덴 에이비 | 건설중장비용 유압회로 |
CN101929177A (zh) * | 2008-07-02 | 2010-12-29 | 沃尔沃建造设备控股(瑞典)有限公司 | 用于挖掘机的液压控制系统 |
JP5188444B2 (ja) * | 2009-04-23 | 2013-04-24 | カヤバ工業株式会社 | 作業機の液圧駆動装置 |
JP6015157B2 (ja) | 2011-07-01 | 2016-10-26 | コベルコ建機株式会社 | 建設機械 |
US8944103B2 (en) | 2011-08-31 | 2015-02-03 | Caterpillar Inc. | Meterless hydraulic system having displacement control valve |
US8966892B2 (en) | 2011-08-31 | 2015-03-03 | Caterpillar Inc. | Meterless hydraulic system having restricted primary makeup |
US8863509B2 (en) | 2011-08-31 | 2014-10-21 | Caterpillar Inc. | Meterless hydraulic system having load-holding bypass |
US8966891B2 (en) | 2011-09-30 | 2015-03-03 | Caterpillar Inc. | Meterless hydraulic system having pump protection |
US9057389B2 (en) | 2011-09-30 | 2015-06-16 | Caterpillar Inc. | Meterless hydraulic system having multi-actuator circuit |
US9051714B2 (en) | 2011-09-30 | 2015-06-09 | Caterpillar Inc. | Meterless hydraulic system having multi-actuator circuit |
US9151018B2 (en) | 2011-09-30 | 2015-10-06 | Caterpillar Inc. | Closed-loop hydraulic system having energy recovery |
US9068578B2 (en) | 2011-10-21 | 2015-06-30 | Caterpillar Inc. | Hydraulic system having flow combining capabilities |
US8984873B2 (en) | 2011-10-21 | 2015-03-24 | Caterpillar Inc. | Meterless hydraulic system having flow sharing and combining functionality |
US8978374B2 (en) | 2011-10-21 | 2015-03-17 | Caterpillar Inc. | Meterless hydraulic system having flow sharing and combining functionality |
US8943819B2 (en) | 2011-10-21 | 2015-02-03 | Caterpillar Inc. | Hydraulic system |
US8893490B2 (en) | 2011-10-21 | 2014-11-25 | Caterpillar Inc. | Hydraulic system |
US8919114B2 (en) | 2011-10-21 | 2014-12-30 | Caterpillar Inc. | Closed-loop hydraulic system having priority-based sharing |
US8973358B2 (en) | 2011-10-21 | 2015-03-10 | Caterpillar Inc. | Closed-loop hydraulic system having force modulation |
US9080310B2 (en) | 2011-10-21 | 2015-07-14 | Caterpillar Inc. | Closed-loop hydraulic system having regeneration configuration |
US8910474B2 (en) | 2011-10-21 | 2014-12-16 | Caterpillar Inc. | Hydraulic system |
US8978373B2 (en) | 2011-10-21 | 2015-03-17 | Caterpillar Inc. | Meterless hydraulic system having flow sharing and combining functionality |
JP5901378B2 (ja) * | 2012-03-23 | 2016-04-06 | Kyb株式会社 | 走行制御バルブ |
US9279236B2 (en) | 2012-06-04 | 2016-03-08 | Caterpillar Inc. | Electro-hydraulic system for recovering and reusing potential energy |
US9290912B2 (en) | 2012-10-31 | 2016-03-22 | Caterpillar Inc. | Energy recovery system having integrated boom/swing circuits |
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 |
JP6012021B2 (ja) * | 2012-11-07 | 2016-10-25 | Kyb株式会社 | パワーショベルの流体圧制御装置 |
US9290911B2 (en) | 2013-02-19 | 2016-03-22 | Caterpillar Inc. | Energy recovery system for hydraulic machine |
JP6196499B2 (ja) * | 2013-08-20 | 2017-09-13 | ナブテスコ株式会社 | 建設機械の多連方向切換弁 |
JP6231949B2 (ja) * | 2014-06-23 | 2017-11-15 | 株式会社日立建機ティエラ | 建設機械の油圧駆動装置 |
JP6555709B2 (ja) * | 2015-04-17 | 2019-08-07 | キャタピラー エス エー アール エル | 流体圧回路および作業機械 |
JP6898834B2 (ja) * | 2017-11-15 | 2021-07-07 | Kyb−Ys株式会社 | 流体圧制御装置 |
CN111197603B (zh) * | 2020-03-05 | 2021-11-30 | 三一汽车起重机械有限公司 | 分合流控制模块、双主泵供油系统、液压系统及工程机械 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03260401A (ja) * | 1990-03-09 | 1991-11-20 | Hitachi Constr Mach Co Ltd | 土木・建設機械の油圧駆動装置 |
EP0470802B1 (en) * | 1990-08-06 | 1997-06-18 | Texas Instruments Incorporated | Event qualified test methods and circuitry |
JP4548959B2 (ja) * | 2001-03-19 | 2010-09-22 | カヤバ工業株式会社 | 油圧制御装置 |
JP4137431B2 (ja) * | 2001-11-09 | 2008-08-20 | ナブテスコ株式会社 | 油圧回路 |
-
2004
- 2004-05-19 JP JP2004148967A patent/JP4139352B2/ja not_active Expired - Fee Related
-
2005
- 2005-05-18 DE DE200560003980 patent/DE602005003980T2/de active Active
- 2005-05-18 EP EP20050010782 patent/EP1598561B1/en not_active Ceased
- 2005-05-19 CN CNB2005100727619A patent/CN100516555C/zh not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP1598561A3 (en) | 2005-12-14 |
DE602005003980T2 (de) | 2008-04-30 |
CN1699761A (zh) | 2005-11-23 |
EP1598561A2 (en) | 2005-11-23 |
EP1598561B1 (en) | 2007-12-26 |
DE602005003980D1 (de) | 2008-02-07 |
CN100516555C (zh) | 2009-07-22 |
JP2005331011A (ja) | 2005-12-02 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP4139352B2 (ja) | 油圧制御装置 | |
JP5564215B2 (ja) | 建設機械用油圧システム | |
JP4137431B2 (ja) | 油圧回路 | |
JP2009150553A (ja) | 油圧駆動制御装置 | |
JP2007192344A (ja) | 作業機械の油圧制御装置 | |
JP2014009794A (ja) | 建設機械の油圧回路及びその制御装置 | |
JP6004900B2 (ja) | パワーショベルの流体圧制御装置 | |
JP2007120004A (ja) | 作業機械の油圧制御装置 | |
WO2012017622A1 (ja) | 油圧回路を有する建設機械 | |
JP4106011B2 (ja) | 油圧回路及びその合流弁 | |
KR20110072719A (ko) | 건설기계의 급선회 방지용 유압시스템 | |
JP4223421B2 (ja) | 建設機械の油圧回路 | |
JP4768002B2 (ja) | 建設機械の油圧回路 | |
KR20070069876A (ko) | 굴삭기의 복합동작 제어용 유압제어시스템 | |
JP4819510B2 (ja) | 作業機械の油圧制御装置 | |
JP5429099B2 (ja) | 建設機械の油圧回路 | |
JP6012021B2 (ja) | パワーショベルの流体圧制御装置 | |
JP5429098B2 (ja) | 建設機械の油圧回路 | |
JP4260850B2 (ja) | 油圧回路 | |
JP3898167B2 (ja) | 建設機械の油圧回路 | |
JP4118893B2 (ja) | 油圧回路 | |
JP5934669B2 (ja) | 建設機械の油圧駆動装置 | |
JP5996416B2 (ja) | 建設機械の油圧回路 | |
JP2010101448A (ja) | 作業機械の油圧制御装置 | |
KR20150075624A (ko) | 굴삭기의 메인 컨트롤 밸브 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20061127 |
|
A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20080118 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20080122 |
|
A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20080321 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20080520 |
|
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20080606 |
|
R151 | Written notification of patent or utility model registration |
Ref document number: 4139352 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R151 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110613 Year of fee payment: 3 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110613 Year of fee payment: 3 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120613 Year of fee payment: 4 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120613 Year of fee payment: 4 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130613 Year of fee payment: 5 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130613 Year of fee payment: 5 |
|
S533 | Written request for registration of change of name |
Free format text: JAPANESE INTERMEDIATE CODE: R313533 |
|
R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
LAPS | Cancellation because of no payment of annual fees |