JP6718370B2 - 液圧システム - Google Patents
液圧システム Download PDFInfo
- Publication number
- JP6718370B2 JP6718370B2 JP2016249463A JP2016249463A JP6718370B2 JP 6718370 B2 JP6718370 B2 JP 6718370B2 JP 2016249463 A JP2016249463 A JP 2016249463A JP 2016249463 A JP2016249463 A JP 2016249463A JP 6718370 B2 JP6718370 B2 JP 6718370B2
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- Prior art keywords
- cylinder
- valve
- line
- regeneration
- side supply
- 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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- 230000008929 regeneration Effects 0.000 claims description 74
- 238000011069 regeneration method Methods 0.000 claims description 74
- 239000012530 fluid Substances 0.000 claims description 27
- 230000007935 neutral effect Effects 0.000 description 8
- 230000006870 function Effects 0.000 description 4
- 238000004904 shortening Methods 0.000 description 4
- 230000004044 response Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008602 contraction Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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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
- F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
- F15B11/024—Systems essentially incorporating special features for controlling the speed or actuating force of an output member by means of differential connection of the servomotor lines, e.g. regenerative circuits
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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
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/14—Energy-recuperation means
-
- 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
-
- 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
- E02F9/2217—Hydraulic or pneumatic drives with energy recovery arrangements, e.g. using accumulators, flywheels
-
- 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
- E02F9/2285—Pilot-operated systems
-
- 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
- F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
- F15B11/028—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the actuating force
-
- 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
-
- 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
- F15B2211/30565—Assemblies of multiple valves having multiple valves for a single output member, e.g. for creating higher valve function by use of multiple valves like two 2/2-valves replacing a 5/3-valve
- F15B2211/3058—Assemblies of multiple valves having multiple valves for a single output member, e.g. for creating higher valve function by use of multiple valves like two 2/2-valves replacing a 5/3-valve having additional valves for interconnecting the fluid chambers of a double-acting actuator, e.g. for regeneration mode or for floating mode
-
- 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
- F15B2211/315—Directional control characterised by the connections of the valve or valves in the circuit
- F15B2211/31552—Directional control characterised by the connections of the valve or valves in the circuit being connected to an output member and a return line
- F15B2211/31558—Directional control characterised by the connections of the valve or valves in the circuit being connected to an output member and a return line having a single output member
-
- 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
- F15B2211/327—Directional control characterised by the type of actuation electrically or electronically
-
- 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
- F15B2211/60—Circuit components or control therefor
- F15B2211/63—Electronic controllers
- F15B2211/6303—Electronic controllers using input signals
- F15B2211/6306—Electronic controllers using input signals representing a pressure
- F15B2211/6309—Electronic controllers using input signals representing a pressure the pressure being a pressure source supply 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
- F15B2211/60—Circuit components or control therefor
- F15B2211/63—Electronic controllers
- F15B2211/6303—Electronic controllers using input signals
- F15B2211/6306—Electronic controllers using input signals representing a pressure
- F15B2211/6313—Electronic controllers using input signals representing a pressure the pressure being a load 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
- F15B2211/60—Circuit components or control therefor
- F15B2211/63—Electronic controllers
- F15B2211/6303—Electronic controllers using input signals
- F15B2211/6336—Electronic controllers using input signals representing a state of the output member, e.g. position, speed or acceleration
-
- 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
- F15B2211/60—Circuit components or control therefor
- F15B2211/63—Electronic controllers
- F15B2211/6303—Electronic controllers using input signals
- F15B2211/6346—Electronic controllers using input signals representing a state of input means, e.g. joystick position
-
- 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
- F15B2211/60—Circuit components or control therefor
- F15B2211/665—Methods of control using electronic components
-
- 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
- F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
- F15B2211/7051—Linear output members
- F15B2211/7053—Double-acting output members
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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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/80—Other types of control related to particular problems or conditions
- F15B2211/88—Control measures for saving energy
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Fluid-Pressure Circuits (AREA)
- Operation Control Of Excavators (AREA)
Description
本発明は上述した実施形態に限定されるものではなく、本発明の要旨を逸脱しない範囲で種々の変形が可能である。
2 ポンプ
21 ポンプライン
22 タンクライン
3 制御弁
41 ヘッド側供給ライン
42 ロッド側供給ライン
5 シリンダ
7 再生ライン
71 再生弁
8 逃しライン
81 逃し弁
Claims (3)
- ポンプラインによりポンプと接続されるとともに、タンクラインによりタンクと接続された制御弁と、
ロッド側供給ラインおよびヘッド側供給ラインにより前記制御弁と接続されたシリンダと、
前記ロッド側供給ラインを前記ヘッド側供給ラインと接続する再生ラインと、
前記再生ラインに設けられた、前記シリンダの伸長時に開かれ、前記シリンダの短縮時に閉じられる再生弁と、
前記再生弁と前記ヘッド側供給ラインとの間で前記再生ラインに設けられた、前記シリンダの伸長時には前記再生弁から前記ヘッド側供給ラインへ向かう作動液の流れは許容するが前記ヘッド側供給ラインから前記再生弁へ向かう作動液の流れは禁止する第1状態に切り換わり、前記シリンダの短縮時には前記ヘッド側供給ラインから前記再生弁へ向かう作動液の流れを許容する第2状態に切り換わる切換弁と、
前記再生弁と前記切換弁との間で前記再生ラインから分岐して前記タンクへつながる逃しラインと、
前記逃しラインに設けられた、前記シリンダの伸長時に閉じられ、前記シリンダの短縮時に開かれる逃し弁と、
を備える、液圧システム。 - 前記液圧システムは、油圧ショベルに組み込まれるものであり、
前記シリンダは、アームシリンダであり、当該アームシリンダの伸長によってアームをキャビンに近づけるアーム引きが行われる、請求項1に記載の液圧システム。 - 前記逃し弁は、前記シリンダの伸長時であっても、前記ポンプの吐出圧力が第1閾値よりも高い場合または前記シリンダのヘッド室の圧力が第2閾値よりも高い場合には、開かれる、請求項1または2に記載の液圧システム。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2016249463A JP6718370B2 (ja) | 2016-12-22 | 2016-12-22 | 液圧システム |
US16/473,174 US10844886B2 (en) | 2016-12-22 | 2017-12-18 | Hydraulic system |
PCT/JP2017/045346 WO2018117028A1 (ja) | 2016-12-22 | 2017-12-18 | 液圧システム |
CN201780076332.XA CN110023632B (zh) | 2016-12-22 | 2017-12-18 | 液压系统 |
GB1908267.6A GB2571483B (en) | 2016-12-22 | 2017-12-18 | Hydraulic system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2016249463A JP6718370B2 (ja) | 2016-12-22 | 2016-12-22 | 液圧システム |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2018105334A JP2018105334A (ja) | 2018-07-05 |
JP6718370B2 true JP6718370B2 (ja) | 2020-07-08 |
Family
ID=62626327
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2016249463A Active JP6718370B2 (ja) | 2016-12-22 | 2016-12-22 | 液圧システム |
Country Status (5)
Country | Link |
---|---|
US (1) | US10844886B2 (ja) |
JP (1) | JP6718370B2 (ja) |
CN (1) | CN110023632B (ja) |
GB (1) | GB2571483B (ja) |
WO (1) | WO2018117028A1 (ja) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP7152968B2 (ja) * | 2019-02-28 | 2022-10-13 | 川崎重工業株式会社 | 油圧ショベル駆動システム |
JP7178493B2 (ja) * | 2019-09-26 | 2022-11-25 | ジアンスー ホンリー ハイドローリック テクノロジー カンパニー リミテッド | 回生制御油圧システム |
JP7382792B2 (ja) * | 2019-10-31 | 2023-11-17 | 川崎重工業株式会社 | 再生装置、それを備える液圧駆動システム、及びその制御装置 |
US11739502B2 (en) * | 2020-03-30 | 2023-08-29 | Hitachi Construction Machinery Co., Ltd. | Work machine |
JP7389765B2 (ja) | 2021-01-18 | 2023-11-30 | フクビ化学工業株式会社 | 反射防止基板 |
JP2022123323A (ja) | 2021-02-12 | 2022-08-24 | 川崎重工業株式会社 | 油圧ショベル駆動システム |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3458434B2 (ja) * | 1993-12-28 | 2003-10-20 | コベルコ建機株式会社 | 作業機械の油圧装置 |
JP3661145B2 (ja) * | 2001-08-09 | 2005-06-15 | 新キャタピラー三菱株式会社 | 伸縮アーム付作業機の油圧回路 |
JP2006336846A (ja) * | 2005-06-06 | 2006-12-14 | Shin Caterpillar Mitsubishi Ltd | 流体圧回路 |
US20090288408A1 (en) | 2005-06-06 | 2009-11-26 | Shin Caterpillar Mitsubishi Ltd. | Hydraulic circuit, energy recovery device, and hydraulic circuit for work machine |
JP5919820B2 (ja) * | 2011-12-28 | 2016-05-18 | コベルコ建機株式会社 | 建設機械の油圧シリンダ回路 |
CN105221504B (zh) * | 2014-06-23 | 2019-06-04 | 胡斯可国际股份有限公司 | 再生失活(regeneration deactivation)阀和方法 |
US10344784B2 (en) * | 2015-05-11 | 2019-07-09 | Caterpillar Inc. | Hydraulic system having regeneration and hybrid start |
-
2016
- 2016-12-22 JP JP2016249463A patent/JP6718370B2/ja active Active
-
2017
- 2017-12-18 CN CN201780076332.XA patent/CN110023632B/zh active Active
- 2017-12-18 GB GB1908267.6A patent/GB2571483B/en active Active
- 2017-12-18 US US16/473,174 patent/US10844886B2/en active Active
- 2017-12-18 WO PCT/JP2017/045346 patent/WO2018117028A1/ja active Application Filing
Also Published As
Publication number | Publication date |
---|---|
CN110023632B (zh) | 2020-06-16 |
CN110023632A (zh) | 2019-07-16 |
US20190323527A1 (en) | 2019-10-24 |
JP2018105334A (ja) | 2018-07-05 |
GB2571483A (en) | 2019-08-28 |
WO2018117028A1 (ja) | 2018-06-28 |
GB2571483B (en) | 2022-04-20 |
GB201908267D0 (en) | 2019-07-24 |
US10844886B2 (en) | 2020-11-24 |
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