EP2937472A4 - Baumaschine mit schwimmfunktion - Google Patents
Baumaschine mit schwimmfunktionInfo
- Publication number
- EP2937472A4 EP2937472A4 EP12890478.6A EP12890478A EP2937472A4 EP 2937472 A4 EP2937472 A4 EP 2937472A4 EP 12890478 A EP12890478 A EP 12890478A EP 2937472 A4 EP2937472 A4 EP 2937472A4
- Authority
- EP
- European Patent Office
- Prior art keywords
- construction machine
- floating function
- floating
- function
- construction
- 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.)
- Withdrawn
Links
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 (ko) | 2012-12-20 | 2012-12-20 | 플로팅 기능이 구비된 건설기계 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2937472A1 EP2937472A1 (de) | 2015-10-28 |
EP2937472A4 true EP2937472A4 (de) | 2016-09-07 |
Family
ID=50978579
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12890478.6A Withdrawn EP2937472A4 (de) | 2012-12-20 | 2012-12-20 | Baumaschine mit schwimmfunktion |
Country Status (5)
Country | Link |
---|---|
US (1) | US20150315768A1 (de) |
EP (1) | EP2937472A4 (de) |
KR (1) | KR101741702B1 (de) |
AU (1) | AU2012397386B2 (de) |
WO (1) | WO2014098284A1 (de) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101741703B1 (ko) * | 2013-01-24 | 2017-05-30 | 볼보 컨스트럭션 이큅먼트 에이비 | 건설기계의 유량 제어장치 및 제어방법 |
EP3305995B1 (de) | 2015-06-02 | 2020-12-16 | Doosan Infracore Co., Ltd. | Hydraulisches system einer baumaschine |
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系统 |
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 (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0831181A1 (de) * | 1996-09-20 | 1998-03-25 | Shin Caterpillar Mitsubishi Ltd. | Hydraulischer Kreislauf |
US6092454A (en) * | 1998-07-23 | 2000-07-25 | Caterpillar Inc. | Controlled float circuit for an actuator |
US20040221714A1 (en) * | 2003-02-21 | 2004-11-11 | Marcus Bitter | Hydraulic control circuit for a hydraulic lifting cylinder |
CN101220823A (zh) * | 2006-11-14 | 2008-07-16 | 胡斯可国际股份有限公司 | 用于液压系统的能量回收与再利用技术 |
EP2378009A2 (de) * | 2008-11-19 | 2011-10-19 | Doosan Infracore Co., Ltd. | Auslegerzylindersteuerkreis f?r eine baumaschine |
Family Cites Families (6)
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 |
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 |
-
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/de not_active Withdrawn
- 2012-12-20 WO PCT/KR2012/011178 patent/WO2014098284A1/ko active Application Filing
- 2012-12-20 AU AU2012397386A patent/AU2012397386B2/en not_active Ceased
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0831181A1 (de) * | 1996-09-20 | 1998-03-25 | Shin Caterpillar Mitsubishi Ltd. | Hydraulischer Kreislauf |
US6092454A (en) * | 1998-07-23 | 2000-07-25 | Caterpillar Inc. | Controlled float circuit for an actuator |
US20040221714A1 (en) * | 2003-02-21 | 2004-11-11 | Marcus Bitter | Hydraulic control circuit for a hydraulic lifting cylinder |
CN101220823A (zh) * | 2006-11-14 | 2008-07-16 | 胡斯可国际股份有限公司 | 用于液压系统的能量回收与再利用技术 |
EP2378009A2 (de) * | 2008-11-19 | 2011-10-19 | Doosan Infracore Co., Ltd. | Auslegerzylindersteuerkreis f?r eine baumaschine |
Non-Patent Citations (1)
Title |
---|
See also references of WO2014098284A1 * |
Also Published As
Publication number | Publication date |
---|---|
KR20150092168A (ko) | 2015-08-12 |
WO2014098284A1 (ko) | 2014-06-26 |
US20150315768A1 (en) | 2015-11-05 |
AU2012397386B2 (en) | 2016-05-19 |
KR101741702B1 (ko) | 2017-05-30 |
EP2937472A1 (de) | 2015-10-28 |
AU2012397386A1 (en) | 2015-07-09 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20150609 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
AX | Request for extension of the european patent |
Extension state: BA ME |
|
DAX | Request for extension of the european patent (deleted) | ||
A4 | Supplementary search report drawn up and despatched |
Effective date: 20160804 |
|
RIC1 | Information provided on ipc code assigned before grant |
Ipc: F15B 11/00 20060101ALI20160729BHEP Ipc: E02F 9/22 20060101AFI20160729BHEP Ipc: E02F 3/84 20060101ALI20160729BHEP |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
INTG | Intention to grant announced |
Effective date: 20180314 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20180703 |