JP6936687B2 - 作業車両 - Google Patents
作業車両 Download PDFInfo
- Publication number
- JP6936687B2 JP6936687B2 JP2017194799A JP2017194799A JP6936687B2 JP 6936687 B2 JP6936687 B2 JP 6936687B2 JP 2017194799 A JP2017194799 A JP 2017194799A JP 2017194799 A JP2017194799 A JP 2017194799A JP 6936687 B2 JP6936687 B2 JP 6936687B2
- Authority
- JP
- Japan
- Prior art keywords
- traveling
- hydraulic
- actuator
- speed
- valve
- 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
-
- 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
-
- 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
- E02F9/2242—Control of flow rate; Load sensing arrangements using two or more pumps with cross-assistance including an electronic controller
-
- 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
- E02F9/2264—Arrangements or adaptations of elements for hydraulic drives
- E02F9/2267—Valves or distributors
-
- 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
-
- 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
-
- 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
- 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
- F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
-
- 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
- F15B2211/20553—Type of pump variable capacity with pilot circuit, e.g. for controlling a swash plate
-
- 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
-
- 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
- F15B2211/355—Pilot pressure 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
- F15B2211/60—Circuit components or control therefor
- F15B2211/605—Load sensing circuits
-
- 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)
- Operation Control Of Excavators (AREA)
- Fluid-Pressure Circuits (AREA)
- Non-Deflectable Wheels, Steering Of Trailers, Or Other Steering (AREA)
Description
21L クローラ走行装置(第1走行部)
21R クローラ走行装置(第2走行部)
22L 油圧モータ(第1走行モータ)
22R 油圧モータ(第2走行モータ)
32 旋回モータ(第2アクチュエータの一例)
34a 油圧ポンプ(第1油圧ポンプ)
34b 油圧ポンプ(第2油圧ポンプ)
36L 走行操作レバー(第1操作部材)
36R 走行操作レバー(第2操作部材)
50a 第1油圧回路
50b 第2油圧回路
70 合流弁(切換弁)
86 第1作業機(第1アクチュエータの一例)
87 第2作業機(第1アクチュエータの一例)
88 第3作業機(第2アクチュエータの一例)
89 第4作業機(第2アクチュエータの一例)
Claims (2)
- 第1走行部と、
前記第1走行部を駆動する第1走行モータと、
第1アクチュエータと、
第1油圧ポンプと、
前記第1油圧ポンプから前記第1走行モータ及び前記第1アクチュエータに作動油を導く第1油圧回路と、
前記第1走行部の走行速度を指示する第1操作部材と、
前記第1走行部と左右方向で反対側に配置される第2走行部と、
前記第2走行部を駆動する第2走行モータと、
第2アクチュエータと、
第2油圧ポンプと、
前記第2油圧ポンプから前記第2走行モータ及び前記第2アクチュエータに作動油を導く第2油圧回路と、
前記第2走行部の走行速度を指示する第2操作部材と、
前記第1油圧回路と前記第2油圧回路との間を接続する第1状態、及び、前記第1油圧回路と前記第2油圧回路との間を遮断する第2状態の間で切換可能な切換弁と、
を備え、
前記第1操作部材で指示される前記第1走行部の走行速度に対応する指示信号の値を第1指示値とし、前記第2操作部材で指示される前記第2走行部の走行速度に対応する指示信号の値を第2指示値としたときに、前記切換弁は、前記第1指示値及び前記第2指示値が何れも閾値以上である場合は、前記第1状態となり、それ以外の場合は、前記第2状態となり、
前記第1操作部材及び前記第2操作部材が共に同一進行方向に向けて最大の走行速度を指示した場合、前記切換弁は前記第1状態となり、前記第1走行モータ、前記第1アクチュエータ、前記第2走行モータ及び前記第2アクチュエータのそれぞれに対して、ロードセンシング制御が行われることを特徴とする作業車両。 - 請求項1に記載の作業車両であって、
前記切換弁は、前記指示信号の値に応じて変化する切換信号に基づいて、前記第1状態及び前記第2状態の間で切り換えられることを特徴とする作業車両。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2017194799A JP6936687B2 (ja) | 2017-10-05 | 2017-10-05 | 作業車両 |
PCT/JP2018/032788 WO2019069612A1 (ja) | 2017-10-05 | 2018-09-04 | 作業車両 |
EP18864823.2A EP3693614B1 (en) | 2017-10-05 | 2018-09-04 | Work vehicle |
AU2018344665A AU2018344665A1 (en) | 2017-10-05 | 2018-09-04 | Work vehicle |
KR1020207005440A KR102667937B1 (ko) | 2017-10-05 | 2018-09-04 | 작업 차량 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2017194799A JP6936687B2 (ja) | 2017-10-05 | 2017-10-05 | 作業車両 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2019066018A JP2019066018A (ja) | 2019-04-25 |
JP6936687B2 true JP6936687B2 (ja) | 2021-09-22 |
Family
ID=65994544
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2017194799A Active JP6936687B2 (ja) | 2017-10-05 | 2017-10-05 | 作業車両 |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP3693614B1 (ja) |
JP (1) | JP6936687B2 (ja) |
KR (1) | KR102667937B1 (ja) |
AU (1) | AU2018344665A1 (ja) |
WO (1) | WO2019069612A1 (ja) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP7431006B2 (ja) * | 2019-09-27 | 2024-02-14 | ナブテスコ株式会社 | 油圧制御回路 |
Family Cites Families (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2697473B2 (ja) * | 1992-03-31 | 1998-01-14 | 油谷重工株式会社 | 建設機械の合流装置 |
JPH11303808A (ja) * | 1998-02-20 | 1999-11-02 | Komatsu Ltd | 油圧駆動式作業車両の油圧システム |
US6526747B2 (en) * | 2000-01-25 | 2003-03-04 | Hitachi Construction Machinery Co., Ltd. | Hydraulic driving device |
JP3614121B2 (ja) * | 2001-08-22 | 2005-01-26 | コベルコ建機株式会社 | 建設機械の油圧装置 |
JP3931712B2 (ja) * | 2002-03-22 | 2007-06-20 | コベルコ建機株式会社 | 作業機械の走行制御装置 |
JP2004027706A (ja) * | 2002-06-27 | 2004-01-29 | Hitachi Constr Mach Co Ltd | 建設機械の油圧回路装置 |
JP3917068B2 (ja) * | 2002-12-18 | 2007-05-23 | カヤバ工業株式会社 | 液圧駆動装置 |
JP2005299376A (ja) * | 2004-03-18 | 2005-10-27 | Kobelco Contstruction Machinery Ltd | 油圧ショベルの油圧制御回路 |
JP2006082767A (ja) * | 2004-09-17 | 2006-03-30 | Hitachi Constr Mach Co Ltd | 走行式建設機械の油圧駆動装置 |
JP2006306200A (ja) * | 2005-04-27 | 2006-11-09 | Shin Caterpillar Mitsubishi Ltd | 作業機械における走行駆動装置 |
JP2006329248A (ja) * | 2005-05-24 | 2006-12-07 | Kobelco Contstruction Machinery Ltd | 作業機械の油圧供給装置 |
JP2006329341A (ja) | 2005-05-26 | 2006-12-07 | Kobelco Contstruction Machinery Ltd | 作業機械の油圧制御装置 |
JP4949345B2 (ja) * | 2008-09-25 | 2012-06-06 | 住友建機株式会社 | 油圧ポンプ制御装置 |
JP5297136B2 (ja) * | 2008-10-02 | 2013-09-25 | 株式会社アイチコーポレーション | 高所作業車 |
JP5419572B2 (ja) * | 2009-07-10 | 2014-02-19 | カヤバ工業株式会社 | ハイブリッド建設機械の制御装置 |
JP2011196436A (ja) | 2010-03-18 | 2011-10-06 | Yanmar Co Ltd | 作業車両の油圧回路 |
JP5406087B2 (ja) * | 2010-03-18 | 2014-02-05 | ヤンマー株式会社 | 作業車両の油圧回路 |
JP5369030B2 (ja) * | 2010-03-18 | 2013-12-18 | ヤンマー株式会社 | 作業車両の油圧回路 |
JP2012021311A (ja) * | 2010-07-14 | 2012-02-02 | Hitachi Constr Mach Co Ltd | 建設機械の油圧駆動装置 |
CN103597218B (zh) * | 2011-06-09 | 2016-04-06 | 沃尔沃建造设备有限公司 | 用于工程机械的液压系统 |
CN105008724B (zh) * | 2013-05-30 | 2017-03-08 | 日立建机株式会社 | 工程机械的液压驱动装置 |
JP6282523B2 (ja) * | 2014-05-09 | 2018-02-21 | 住友重機械工業株式会社 | 作業機械 |
JP6242312B2 (ja) * | 2014-09-02 | 2017-12-06 | 株式会社日立建機ティエラ | 建設機械の油圧システム |
-
2017
- 2017-10-05 JP JP2017194799A patent/JP6936687B2/ja active Active
-
2018
- 2018-09-04 WO PCT/JP2018/032788 patent/WO2019069612A1/ja unknown
- 2018-09-04 AU AU2018344665A patent/AU2018344665A1/en not_active Abandoned
- 2018-09-04 KR KR1020207005440A patent/KR102667937B1/ko active IP Right Grant
- 2018-09-04 EP EP18864823.2A patent/EP3693614B1/en active Active
Also Published As
Publication number | Publication date |
---|---|
KR20200061332A (ko) | 2020-06-02 |
KR102667937B1 (ko) | 2024-05-21 |
EP3693614A4 (en) | 2021-08-11 |
WO2019069612A1 (ja) | 2019-04-11 |
EP3693614A1 (en) | 2020-08-12 |
EP3693614B1 (en) | 2023-11-01 |
AU2018344665A1 (en) | 2020-04-23 |
JP2019066018A (ja) | 2019-04-25 |
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