EP2479349B1 - Hydraulic control apparatus for work machine - Google Patents

Hydraulic control apparatus for work machine Download PDF

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Publication number
EP2479349B1
EP2479349B1 EP12152038.1A EP12152038A EP2479349B1 EP 2479349 B1 EP2479349 B1 EP 2479349B1 EP 12152038 A EP12152038 A EP 12152038A EP 2479349 B1 EP2479349 B1 EP 2479349B1
Authority
EP
European Patent Office
Prior art keywords
front attachment
work machine
coupler
hydraulic
coupled
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.)
Active
Application number
EP12152038.1A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2479349A1 (en
Inventor
Hiroshi Tsumura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Construction Machinery Co Ltd
Original Assignee
Hitachi Construction Machinery Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hitachi Construction Machinery Co Ltd filed Critical Hitachi Construction Machinery Co Ltd
Publication of EP2479349A1 publication Critical patent/EP2479349A1/en
Application granted granted Critical
Publication of EP2479349B1 publication Critical patent/EP2479349B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • E02F3/96—Dredgers; Soil-shifting machines mechanically-driven with arrangements for alternate or simultaneous use of different digging elements
    • E02F3/963—Arrangements on backhoes for alternate use of different tools
    • 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
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/36—Component parts
    • E02F3/3604—Devices to connect tools to arms, booms or the like
    • E02F3/3609—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat
    • E02F3/3654—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat with energy coupler, e.g. coupler for hydraulic or electric lines, to provide energy to drive(s) mounted on the tool
    • 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
    • E02F9/2264—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
    • E02F9/2264—Arrangements or adaptations of elements for hydraulic drives
    • E02F9/2275—Hoses and supports therefor and protection therefor
    • 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
    • E02F9/2285—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

Definitions

  • US 2003/0233773 A1 describes a construction machine with a rapid-action coupling having features of reliably preventing the technical and safety-relevant risks during the automatic attachment.
  • a transponder arranged on the tool side is used for identifying the type and the size of the tool.
  • the construction machine cannot detect which tool is attached to the construction machine (or on-board computer) precisely just when the tool is attached. Therefore some errors may occur when the tool is attached to the construction machine. For example, if the transponder is destroyed during the construction machine operation by sands, soil or rocks, or if the transponder is stained by dirt, the on-board computer may misidentify the tool.
  • the front attachment 6 is elevatably mounted.
  • the front attachment 6 includes a boom 7, an arm 8 and an attachment 9.
  • the boom 7 has a base end side coupled to the rotary body 2.
  • the arm 8 is coupled to an opposite end side of the base end side of the boom 7.
  • the attachment 9, such as a bucket used for the excavation or the like, is mounted on the tip of the arm 8.
  • the boom 7, the arm 8, and the bucket respectively include a boom cylinder 10, an arm cylinder 11, and a bucket cylinder 12, which are hydraulic pressure actuators.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Operation Control Of Excavators (AREA)
  • Component Parts Of Construction Machinery (AREA)
  • Fluid-Pressure Circuits (AREA)
EP12152038.1A 2011-01-25 2012-01-23 Hydraulic control apparatus for work machine Active EP2479349B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2011012690A JP5631762B2 (ja) 2011-01-25 2011-01-25 作業機のフロント仕様判別装置

Publications (2)

Publication Number Publication Date
EP2479349A1 EP2479349A1 (en) 2012-07-25
EP2479349B1 true EP2479349B1 (en) 2018-04-11

Family

ID=45524351

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12152038.1A Active EP2479349B1 (en) 2011-01-25 2012-01-23 Hydraulic control apparatus for work machine

Country Status (2)

Country Link
EP (1) EP2479349B1 (ja)
JP (1) JP5631762B2 (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2619089A (en) * 2022-05-27 2023-11-29 Caterpillar Sarl Work machine system with machine power unit and interchangeable modular units

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6132557B2 (ja) * 2013-01-15 2017-05-24 株式会社技研製作所 杭圧入装置
JP5617945B2 (ja) * 2013-02-26 2014-11-05 コベルコクレーン株式会社 油圧回路および建設機械
JP6484021B2 (ja) * 2014-12-12 2019-03-13 日立建機株式会社 作業機械
CN112292492B (zh) * 2018-06-27 2022-06-03 沃尔沃建筑设备公司 用于对运土设备中的工具的快速联接进行安全管理的方法和***

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0535185Y2 (ja) * 1987-06-11 1993-09-07
JPH0449336A (ja) * 1990-06-18 1992-02-18 Kobe Steel Ltd 作業機の圧力制御装置
US5957213A (en) * 1996-05-30 1999-09-28 Clark Equipment Company Intelligent attachment to a power tool
DE20209518U1 (de) * 2002-06-19 2003-10-30 Liebherr-Hydraulikbagger GmbH, 88457 Kirchdorf Baumaschine mit Schnellkupplung
JP4458083B2 (ja) * 2006-11-27 2010-04-28 コベルコ建機株式会社 油圧作業機械のリリーフ圧切換装置
JP2009133441A (ja) * 2007-11-30 2009-06-18 Caterpillar Japan Ltd 油圧シリンダ制御装置及び油圧シリンダ制御方法
JP2010001613A (ja) * 2008-06-18 2010-01-07 Hitachi Constr Mach Co Ltd 解体作業機の安全監視装置
JP5203131B2 (ja) * 2008-10-21 2013-06-05 日立建機株式会社 建設機械の油圧回路
JP4931955B2 (ja) * 2009-04-06 2012-05-16 日立建機株式会社 油圧ショベルの油圧回路装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2619089A (en) * 2022-05-27 2023-11-29 Caterpillar Sarl Work machine system with machine power unit and interchangeable modular units

Also Published As

Publication number Publication date
EP2479349A1 (en) 2012-07-25
JP5631762B2 (ja) 2014-11-26
JP2012154383A (ja) 2012-08-16

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