JP6555709B2 - 流体圧回路および作業機械 - Google Patents
流体圧回路および作業機械 Download PDFInfo
- Publication number
- JP6555709B2 JP6555709B2 JP2015084715A JP2015084715A JP6555709B2 JP 6555709 B2 JP6555709 B2 JP 6555709B2 JP 2015084715 A JP2015084715 A JP 2015084715A JP 2015084715 A JP2015084715 A JP 2015084715A JP 6555709 B2 JP6555709 B2 JP 6555709B2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- fluid pressure
- pump
- pressure
- fluid
- 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
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Classifications
-
- 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
- E02F9/2221—Control of flow rate; Load sensing arrangements
- E02F9/2225—Control of flow rate; Load sensing arrangements using pressure-compensating 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
- E02F9/2296—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
- F15B2211/20507—Type of prime mover
- F15B2211/20523—Internal combustion engine
-
- 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
- F15B2211/30525—Directional control valves, e.g. 4/3-directional control valve
- F15B2211/3053—In combination with a pressure compensating valve
- F15B2211/30535—In combination with a pressure compensating valve the pressure compensating valve is arranged between pressure source and 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
- F15B2211/30—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
- F15B2211/50—Pressure control
- F15B2211/505—Pressure control characterised by the type of pressure control means
- F15B2211/50509—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means
- F15B2211/50536—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means using unloading valves controlling the supply pressure by diverting fluid to 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
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
- F15B2211/71—Multiple output members, e.g. multiple hydraulic motors or cylinders
- F15B2211/7135—Combinations of output members of different types, e.g. single-acting cylinders with rotary motors
-
- 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)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- Fluid-Pressure Circuits (AREA)
- Operation Control Of Excavators (AREA)
Description
CV1 第1の制御弁であるブーム用制御弁
CV2 第2の制御弁であるバケット用制御弁
CV3 第3の制御弁であるスティック用制御弁
CV4 第4の制御弁である旋回用制御弁
P1 第1のポンプ
P2 第2のポンプ
P3 第3のポンプ
11 作業機械としての油圧ショベル
12 機体
13 作業装置
14 下部走行体
16 上部旋回体
16m 第4の流体圧アクチュエータである旋回モータとしての旋回用油圧モータ
21 ブーム
21c 第1の流体圧アクチュエータであるブームシリンダ
22 スティック
22c 第3の流体圧アクチュエータであるスティックシリンダ
23 バケット
23c 第2の流体圧アクチュエータであるバケットシリンダ
29 切替弁
Claims (2)
- 第1乃至第4の流体圧アクチュエータと、
第1および第2の流体圧アクチュエータのそれぞれに作動流体を供給する第1のポンプと、
第3の流体圧アクチュエータに作動流体を供給する第2のポンプと、
第4の流体圧アクチュエータに作動流体を供給する第3のポンプと、
第1乃至第4の流体圧アクチュエータにそれぞれ供給される作動流体を少なくとも方向制御する第1乃至第4の制御弁と、
第2の制御弁の上流側に設けられ、第2の制御弁の第1乃至第3のポンプから第2の流体圧アクチュエータへの開口の前後差圧を一定に保つ圧力補償弁と、
第1乃至第4の制御弁の少なくともいずれかの操作量に応じて切替えられ、第3のポンプから吐出される作動流体を、第2乃至第4の流体圧アクチュエータのいずれかに選択的に供給するように方向制御する切替弁とを具備し、
切替弁は、第2の流体圧アクチュエータに供給する作動流体を、第2の制御弁と圧力補償弁との間に合流させる
ことを特徴とする流体圧回路。 - 機体と、
機体に搭載された作業装置と、
これら機体および作業装置に設けられた請求項1記載の流体圧回路とを具備し、
機体は、
下部走行体と、
この下部走行体に軸支され第4の流体圧アクチュエータである旋回モータにより旋回される上部旋回体とを備え、
作業装置は、
上部旋回体に軸連結されて第1の流体圧アクチュエータであるブームシリンダにより回動されるブームと、
ブームの先端に軸連結されて第3の流体圧アクチュエータであるスティックシリンダにより回動されるスティックと、
スティックの先端に軸連結されて第2の流体圧アクチュエータであるバケットシリンダにより回動されるバケットとを備えた
ことを特徴とする作業機械。
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2015084715A JP6555709B2 (ja) | 2015-04-17 | 2015-04-17 | 流体圧回路および作業機械 |
CN201680022022.5A CN107532408B (zh) | 2015-04-17 | 2016-04-13 | 液压回路和作业机械 |
EP16715596.9A EP3283696B1 (en) | 2015-04-17 | 2016-04-13 | Hydraulic circuit and working machine |
KR1020177031843A KR20170138460A (ko) | 2015-04-17 | 2016-04-13 | 유압 회로 및 작업 기계 |
US15/566,622 US20180127949A1 (en) | 2015-04-17 | 2016-04-13 | Hydraulic circuit and working machine |
PCT/EP2016/058148 WO2016166178A1 (en) | 2015-04-17 | 2016-04-13 | Hydraulic circuit and working machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2015084715A JP6555709B2 (ja) | 2015-04-17 | 2015-04-17 | 流体圧回路および作業機械 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2016205450A JP2016205450A (ja) | 2016-12-08 |
JP6555709B2 true JP6555709B2 (ja) | 2019-08-07 |
Family
ID=55702017
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2015084715A Expired - Fee Related JP6555709B2 (ja) | 2015-04-17 | 2015-04-17 | 流体圧回路および作業機械 |
Country Status (6)
Country | Link |
---|---|
US (1) | US20180127949A1 (ja) |
EP (1) | EP3283696B1 (ja) |
JP (1) | JP6555709B2 (ja) |
KR (1) | KR20170138460A (ja) |
CN (1) | CN107532408B (ja) |
WO (1) | WO2016166178A1 (ja) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6694260B2 (ja) * | 2015-10-16 | 2020-05-13 | ナブテスコ株式会社 | 油圧駆動装置 |
JP6763326B2 (ja) * | 2017-03-14 | 2020-09-30 | コベルコ建機株式会社 | 油圧回路 |
CN107191441A (zh) * | 2017-07-27 | 2017-09-22 | 徐州重型机械有限公司 | 液压***、液压***的控制方法以及工程机械 |
CN111480011B (zh) * | 2017-12-15 | 2023-03-24 | 沃尔沃建筑设备公司 | 液压机械 |
JP7202278B2 (ja) * | 2019-11-07 | 2023-01-11 | 日立建機株式会社 | 建設機械 |
JP7373406B2 (ja) * | 2020-01-08 | 2023-11-02 | ナブテスコ株式会社 | 油圧回路および建設機械 |
KR20210109334A (ko) * | 2020-02-27 | 2021-09-06 | 두산인프라코어 주식회사 | 건설 기계 |
US20230175234A1 (en) * | 2020-05-01 | 2023-06-08 | Cummins Inc. | Distributed pump architecture for multifunctional machines |
JP2022096795A (ja) * | 2020-12-18 | 2022-06-30 | 川崎重工業株式会社 | 弁ユニットおよび弁装置 |
CN113294397B (zh) * | 2021-04-13 | 2024-02-09 | 中铁工程装备集团有限公司 | 一种管片吊机及盾构机 |
DE112022003630T5 (de) * | 2021-08-26 | 2024-06-27 | Caterpillar Sarl | Hydraulisches steuersystem in baggerartiger baumaschine |
JP2023084301A (ja) * | 2021-12-07 | 2023-06-19 | キャタピラー エス エー アール エル | 作業機械における油圧制御システム |
JP2023087884A (ja) * | 2021-12-14 | 2023-06-26 | キャタピラー エス エー アール エル | 作業機械における油圧制御システム |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5621044U (ja) * | 1979-07-20 | 1981-02-24 | ||
JP3434394B2 (ja) * | 1995-07-11 | 2003-08-04 | 日立建機株式会社 | 建設機械の制御回路 |
JP3607529B2 (ja) | 1999-05-24 | 2005-01-05 | 日立建機株式会社 | 建設機械の油圧制御装置 |
JP2001056001A (ja) * | 1999-08-17 | 2001-02-27 | Yanmar Diesel Engine Co Ltd | 掘削旋回作業機の油圧回路 |
JP4139352B2 (ja) * | 2004-05-19 | 2008-08-27 | カヤバ工業株式会社 | 油圧制御装置 |
JP4425805B2 (ja) | 2005-01-19 | 2010-03-03 | ナブテスコ株式会社 | 油圧回路 |
JP5042471B2 (ja) * | 2005-06-30 | 2012-10-03 | コベルコ建機株式会社 | 建設機械の油圧制御装置 |
CN101490425B (zh) * | 2006-05-15 | 2013-01-30 | 株式会社小松制作所 | 液压行驶车辆 |
JP4871781B2 (ja) * | 2007-04-25 | 2012-02-08 | 日立建機株式会社 | 建設機械の3ポンプ油圧回路システム及び油圧ショベルの3ポンプ油圧回路システム |
JP5528276B2 (ja) | 2010-09-21 | 2014-06-25 | 株式会社クボタ | 作業機の油圧システム |
JP5572586B2 (ja) * | 2011-05-19 | 2014-08-13 | 日立建機株式会社 | 作業機械の油圧駆動装置 |
CN103857850A (zh) * | 2011-10-07 | 2014-06-11 | 沃尔沃建造设备有限公司 | 用于施工机械的优先控制*** |
EP2876306B1 (en) * | 2012-07-19 | 2018-11-07 | Volvo Construction Equipment AB | Flow control valve for construction machinery |
JP6006666B2 (ja) * | 2013-03-28 | 2016-10-12 | 株式会社神戸製鋼所 | 油圧ショベル |
WO2014192458A1 (ja) * | 2013-05-30 | 2014-12-04 | 日立建機株式会社 | 建設機械の油圧駆動装置 |
US20150192149A1 (en) * | 2014-01-03 | 2015-07-09 | Caterpillar Inc. | Apparatus and method for hydraulic systems |
JP2016205451A (ja) * | 2015-04-17 | 2016-12-08 | 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 |
-
2015
- 2015-04-17 JP JP2015084715A patent/JP6555709B2/ja not_active Expired - Fee Related
-
2016
- 2016-04-13 WO PCT/EP2016/058148 patent/WO2016166178A1/en active Application Filing
- 2016-04-13 US US15/566,622 patent/US20180127949A1/en not_active Abandoned
- 2016-04-13 EP EP16715596.9A patent/EP3283696B1/en active Active
- 2016-04-13 CN CN201680022022.5A patent/CN107532408B/zh not_active Expired - Fee Related
- 2016-04-13 KR KR1020177031843A patent/KR20170138460A/ko unknown
Also Published As
Publication number | Publication date |
---|---|
US20180127949A1 (en) | 2018-05-10 |
CN107532408A (zh) | 2018-01-02 |
KR20170138460A (ko) | 2017-12-15 |
EP3283696A1 (en) | 2018-02-21 |
CN107532408B (zh) | 2018-10-09 |
JP2016205450A (ja) | 2016-12-08 |
EP3283696B1 (en) | 2019-05-15 |
WO2016166178A1 (en) | 2016-10-20 |
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