KR101741702B1 - 플로팅 기능이 구비된 건설기계 - Google Patents
플로팅 기능이 구비된 건설기계 Download PDFInfo
- Publication number
- KR101741702B1 KR101741702B1 KR1020157015833A KR20157015833A KR101741702B1 KR 101741702 B1 KR101741702 B1 KR 101741702B1 KR 1020157015833 A KR1020157015833 A KR 1020157015833A KR 20157015833 A KR20157015833 A KR 20157015833A KR 101741702 B1 KR101741702 B1 KR 101741702B1
- Authority
- KR
- South Korea
- Prior art keywords
- dozer
- floating
- cylinder
- flow path
- check valve
- Prior art date
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/76—Graders, bulldozers, or the like with scraper plates or ploughshare-like elements; Levelling scarifying devices
- E02F3/80—Component parts
- E02F3/84—Drives or control devices therefor, e.g. hydraulic drive systems
- E02F3/844—Drives or control devices therefor, e.g. hydraulic drive systems for positioning the blade, e.g. hydraulically
-
- 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
- E02F9/2203—Arrangements for controlling the attitude of actuators, e.g. speed, floating function
-
- 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
- E02F9/2292—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
- F15B11/003—Systems with load-holding valves
-
- 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
- F15B2211/30505—Non-return valves, i.e. check valves
- F15B2211/3051—Cross-check valves
-
- 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
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
- F15B2211/77—Control of direction of movement of the output member
- F15B2211/7741—Control of direction of movement of the output member with floating mode, e.g. using a direct connection between both lines of a double-acting cylinder
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Operation Control Of Excavators (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/KR2012/011178 WO2014098284A1 (fr) | 2012-12-20 | 2012-12-20 | Engin de chantier à fonction flottante |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20150092168A KR20150092168A (ko) | 2015-08-12 |
KR101741702B1 true KR101741702B1 (ko) | 2017-05-30 |
Family
ID=50978579
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020157015833A KR101741702B1 (ko) | 2012-12-20 | 2012-12-20 | 플로팅 기능이 구비된 건설기계 |
Country Status (5)
Country | Link |
---|---|
US (1) | US20150315768A1 (fr) |
EP (1) | EP2937472A4 (fr) |
KR (1) | KR101741702B1 (fr) |
AU (1) | AU2012397386B2 (fr) |
WO (1) | WO2014098284A1 (fr) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE112013006501T5 (de) * | 2013-01-24 | 2016-03-31 | Volvo Construction Equipment Ab | Vorrichtung und Verfahren zum Steuern einer Flussrate bei Baumaschinen |
KR101977113B1 (ko) * | 2015-06-02 | 2019-08-28 | 두산인프라코어 주식회사 | 건설기계의 유압 시스템 |
US10641388B2 (en) | 2015-12-07 | 2020-05-05 | Kubota Corporation | Hydraulic system of work machine and work machine |
KR102491222B1 (ko) * | 2015-12-11 | 2023-01-25 | 주식회사 대동 | 작업차용 작업기 승강 및 플로팅 구현을 위한 유압회로 |
CN110158682B (zh) * | 2019-05-06 | 2021-07-02 | 广西柳工机械股份有限公司 | 平地机工作装置液压*** |
CN113323071B (zh) * | 2021-05-14 | 2023-02-24 | 安徽铜冠机械股份有限公司 | 地下铲运机铲斗浮动控制单元 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040221714A1 (en) * | 2003-02-21 | 2004-11-11 | Marcus Bitter | Hydraulic control circuit for a hydraulic lifting cylinder |
JP2008121893A (ja) * | 2006-11-14 | 2008-05-29 | Husco Internatl Inc | 油圧システムのためのエネルギー回収及び再利用技術 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4166506A (en) * | 1975-06-30 | 1979-09-04 | Kabushiki Kaisha Komatsu Seisakusho | Controlling apparatus for bulldozer blade |
US4282798A (en) * | 1979-10-22 | 1981-08-11 | Ex-Cell-O Corporation | Control valve unit for hydraulic linear actuator |
US4359931A (en) * | 1981-01-19 | 1982-11-23 | The Warner & Swasey Company | Regenerative and anticavitation hydraulic system for an excavator |
JP3478931B2 (ja) * | 1996-09-20 | 2003-12-15 | 新キャタピラー三菱株式会社 | 油圧回路 |
US6092454A (en) * | 1998-07-23 | 2000-07-25 | Caterpillar Inc. | Controlled float circuit for an actuator |
JP2002088796A (ja) * | 2000-09-19 | 2002-03-27 | Kobelco Contstruction Machinery Ltd | ドーザ装置 |
US6892535B2 (en) * | 2002-06-14 | 2005-05-17 | Volvo Construction Equipment Holding Sweden Ab | Hydraulic circuit for boom cylinder combination having float function |
KR100849500B1 (ko) * | 2006-11-29 | 2008-07-31 | 볼보 컨스트럭션 이키프먼트 홀딩 스웨덴 에이비 | 플로팅 기능이 구비된 더블 체크밸브 |
KR101500744B1 (ko) * | 2008-11-19 | 2015-03-09 | 두산인프라코어 주식회사 | 건설기계의 붐 실린더 제어회로 |
-
2012
- 2012-12-20 KR KR1020157015833A patent/KR101741702B1/ko active IP Right Grant
- 2012-12-20 US US14/652,012 patent/US20150315768A1/en not_active Abandoned
- 2012-12-20 EP EP12890478.6A patent/EP2937472A4/fr not_active Withdrawn
- 2012-12-20 AU AU2012397386A patent/AU2012397386B2/en not_active Ceased
- 2012-12-20 WO PCT/KR2012/011178 patent/WO2014098284A1/fr active Application Filing
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040221714A1 (en) * | 2003-02-21 | 2004-11-11 | Marcus Bitter | Hydraulic control circuit for a hydraulic lifting cylinder |
JP2008121893A (ja) * | 2006-11-14 | 2008-05-29 | Husco Internatl Inc | 油圧システムのためのエネルギー回収及び再利用技術 |
Also Published As
Publication number | Publication date |
---|---|
EP2937472A1 (fr) | 2015-10-28 |
KR20150092168A (ko) | 2015-08-12 |
US20150315768A1 (en) | 2015-11-05 |
WO2014098284A1 (fr) | 2014-06-26 |
AU2012397386A1 (en) | 2015-07-09 |
AU2012397386B2 (en) | 2016-05-19 |
EP2937472A4 (fr) | 2016-09-07 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
A201 | Request for examination | ||
E902 | Notification of reason for refusal | ||
E701 | Decision to grant or registration of patent right | ||
GRNT | Written decision to grant |