EP3995632A4 - Construction machinery - Google Patents

Construction machinery Download PDF

Info

Publication number
EP3995632A4
EP3995632A4 EP20870184.7A EP20870184A EP3995632A4 EP 3995632 A4 EP3995632 A4 EP 3995632A4 EP 20870184 A EP20870184 A EP 20870184A EP 3995632 A4 EP3995632 A4 EP 3995632A4
Authority
EP
European Patent Office
Prior art keywords
construction machinery
machinery
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.)
Pending
Application number
EP20870184.7A
Other languages
German (de)
French (fr)
Other versions
EP3995632A1 (en
Inventor
Takeshi Ishii
Kiwamu Takahashi
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 Tierra Co Ltd
Original Assignee
Hitachi Construction Machinery Tierra 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 Tierra Co Ltd filed Critical Hitachi Construction Machinery Tierra Co Ltd
Publication of EP3995632A1 publication Critical patent/EP3995632A1/en
Publication of EP3995632A4 publication Critical patent/EP3995632A4/en
Pending legal-status Critical Current

Links

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
    • E02F9/2278—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
    • 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
    • E02F9/2058—Electric or electro-mechanical or mechanical control devices of vehicle sub-units
    • E02F9/2062—Control of propulsion units
    • E02F9/207—Control of propulsion units of the type electric propulsion units, e.g. electric motors or generators
    • 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
    • E02F9/2232—Control of flow rate; Load sensing arrangements using one or more variable displacement pumps
    • E02F9/2235—Control of flow rate; Load sensing arrangements using one or more variable displacement pumps 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
    • E02F9/2246—Control of prime movers, e.g. depending on the hydraulic load of work tools
    • 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
    • E02F9/2271—Actuators and supports therefor and protection therefor
    • 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
    • E02F3/42—Drives for dippers, buckets, dipper-arms or bucket-arms
    • E02F3/43—Control of dipper or bucket position; Control of sequence of drive operations
    • E02F3/435—Control of dipper or bucket position; Control of sequence of drive operations for dipper-arms, backhoes or the like

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Operation Control Of Excavators (AREA)
  • Fluid-Pressure Circuits (AREA)
EP20870184.7A 2019-09-25 2020-06-12 Construction machinery Pending EP3995632A4 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2019174713A JP7110164B2 (en) 2019-09-25 2019-09-25 construction machinery
PCT/JP2020/023172 WO2021059617A1 (en) 2019-09-25 2020-06-12 Construction machinery

Publications (2)

Publication Number Publication Date
EP3995632A1 EP3995632A1 (en) 2022-05-11
EP3995632A4 true EP3995632A4 (en) 2023-07-12

Family

ID=75157240

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20870184.7A Pending EP3995632A4 (en) 2019-09-25 2020-06-12 Construction machinery

Country Status (5)

Country Link
US (1) US20220282457A1 (en)
EP (1) EP3995632A4 (en)
JP (1) JP7110164B2 (en)
CN (1) CN114207224B (en)
WO (1) WO2021059617A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022120368A1 (en) * 2022-08-11 2024-02-22 Wacker Neuson Linz Gmbh Hydraulic work vehicle with a vehicle frame and a work tool

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130325235A1 (en) * 2011-04-19 2013-12-05 Hitachi Construction Machinery Co., Ltd. Electromotive drive device for construction machine
EP3184700A1 (en) * 2015-12-25 2017-06-28 Hitachi Construction Machinery Co., Ltd. Hydraulic control system for construction machine

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1306606A (en) * 1999-05-28 2001-08-01 日立建机株式会社 Pump capacity control device and valve device
JP4990860B2 (en) 2008-09-09 2012-08-01 日立建機株式会社 Engine control system for work equipment
WO2015125683A1 (en) * 2014-02-24 2015-08-27 住友建機株式会社 Shovel and shovel control method
JP6509899B2 (en) * 2014-11-10 2019-05-08 住友建機株式会社 Work machine
JP2016108762A (en) 2014-12-03 2016-06-20 日立建機株式会社 Hybrid construction machine
KR101945436B1 (en) * 2016-03-11 2019-02-07 히다치 겡키 가부시키 가이샤 Construction Machinery
JP6524019B2 (en) 2016-05-18 2019-06-05 日立建機株式会社 Construction machinery
JP6549543B2 (en) * 2016-09-29 2019-07-24 日立建機株式会社 Hydraulic drive of work machine
EP4056766B1 (en) * 2016-12-06 2024-04-10 Sumitomo (S.H.I.) Construction Machinery Co., Ltd. Construction machine
JP6605519B2 (en) * 2017-02-03 2019-11-13 日立建機株式会社 Construction machinery
JP6683640B2 (en) * 2017-02-20 2020-04-22 日立建機株式会社 Construction machinery
JP6769936B2 (en) 2017-08-31 2020-10-14 日立建機株式会社 Hybrid work machine

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130325235A1 (en) * 2011-04-19 2013-12-05 Hitachi Construction Machinery Co., Ltd. Electromotive drive device for construction machine
EP3184700A1 (en) * 2015-12-25 2017-06-28 Hitachi Construction Machinery Co., Ltd. Hydraulic control system for construction machine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2021059617A1 *

Also Published As

Publication number Publication date
JP2021050546A (en) 2021-04-01
WO2021059617A1 (en) 2021-04-01
US20220282457A1 (en) 2022-09-08
JP7110164B2 (en) 2022-08-01
CN114207224B (en) 2022-12-16
CN114207224A (en) 2022-03-18
EP3995632A1 (en) 2022-05-11

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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

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
A4 Supplementary search report drawn up and despatched

Effective date: 20230614

RIC1 Information provided on ipc code assigned before grant

Ipc: E02F 9/22 20060101ALI20230607BHEP

Ipc: E02F 9/20 20060101AFI20230607BHEP