JP6999336B2 - 油圧回路 - Google Patents

油圧回路 Download PDF

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Publication number
JP6999336B2
JP6999336B2 JP2017176015A JP2017176015A JP6999336B2 JP 6999336 B2 JP6999336 B2 JP 6999336B2 JP 2017176015 A JP2017176015 A JP 2017176015A JP 2017176015 A JP2017176015 A JP 2017176015A JP 6999336 B2 JP6999336 B2 JP 6999336B2
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JP
Japan
Prior art keywords
hydraulic
passage
side chamber
oil
boom
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
JP2017176015A
Other languages
English (en)
Japanese (ja)
Other versions
JP2019052664A (ja
Inventor
仁 岩崎
啓介 後藤
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.)
Nabtesco Corp
Original Assignee
Nabtesco Corp
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 Nabtesco Corp filed Critical Nabtesco Corp
Priority to JP2017176015A priority Critical patent/JP6999336B2/ja
Priority to KR1020180091168A priority patent/KR102542812B1/ko
Priority to CN201811055879.4A priority patent/CN109487838B/zh
Publication of JP2019052664A publication Critical patent/JP2019052664A/ja
Application granted granted Critical
Publication of JP6999336B2 publication Critical patent/JP6999336B2/ja
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
    • E02F3/28—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
    • 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
    • E02F3/422—Drive systems for bucket-arms, front-end loaders, dumpers or the like
    • 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
    • E02F3/431—Control of dipper or bucket position; Control of sequence of drive operations for bucket-arms, front-end loaders, dumpers or the like
    • 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
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2264—Arrangements or adaptations of elements for hydraulic 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
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2264—Arrangements or adaptations of elements for hydraulic drives
    • E02F9/2267—Valves or distributors
JP2017176015A 2017-09-13 2017-09-13 油圧回路 Active JP6999336B2 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2017176015A JP6999336B2 (ja) 2017-09-13 2017-09-13 油圧回路
KR1020180091168A KR102542812B1 (ko) 2017-09-13 2018-08-06 유압 회로
CN201811055879.4A CN109487838B (zh) 2017-09-13 2018-09-11 液压回路

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2017176015A JP6999336B2 (ja) 2017-09-13 2017-09-13 油圧回路

Publications (2)

Publication Number Publication Date
JP2019052664A JP2019052664A (ja) 2019-04-04
JP6999336B2 true JP6999336B2 (ja) 2022-01-18

Family

ID=65689507

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2017176015A Active JP6999336B2 (ja) 2017-09-13 2017-09-13 油圧回路

Country Status (3)

Country Link
JP (1) JP6999336B2 (zh)
KR (1) KR102542812B1 (zh)
CN (1) CN109487838B (zh)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109914519B (zh) * 2019-04-22 2021-05-04 江苏师范大学 一种基于四口液压变压器的重力势能回收与再利用节能装置
JP7362412B2 (ja) * 2019-10-18 2023-10-17 ナブテスコ株式会社 制御回路及び建設機械

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005221026A (ja) 2004-02-06 2005-08-18 Hitachi Constr Mach Co Ltd 油圧作業機の油圧回路
JP2010242796A (ja) 2009-04-01 2010-10-28 Sumitomo (Shi) Construction Machinery Co Ltd 建設機械用油圧制御回路
JP2017067137A (ja) 2015-09-29 2017-04-06 ナブテスコ株式会社 方向切換弁及び油圧システム

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR0131980Y1 (ko) * 1995-10-20 1998-12-15 김정국 중장비의 2단 릴리프 유압회로 장치
JPH1089317A (ja) 1996-09-18 1998-04-07 Sumitomo Constr Mach Co Ltd 油圧ショベルのブーム下げ再生回路
KR200257578Y1 (ko) * 1996-12-27 2002-04-22 양재신 굴삭기의붐작동용유량제어장치
JP3450702B2 (ja) 1998-02-26 2003-09-29 新キャタピラー三菱株式会社 ブームを備えた作業機械の油圧回路
JP2007333017A (ja) 2006-06-13 2007-12-27 Sumitomo (Shi) Construction Machinery Manufacturing Co Ltd 建設機械の省エネ装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005221026A (ja) 2004-02-06 2005-08-18 Hitachi Constr Mach Co Ltd 油圧作業機の油圧回路
JP2010242796A (ja) 2009-04-01 2010-10-28 Sumitomo (Shi) Construction Machinery Co Ltd 建設機械用油圧制御回路
JP2017067137A (ja) 2015-09-29 2017-04-06 ナブテスコ株式会社 方向切換弁及び油圧システム

Also Published As

Publication number Publication date
JP2019052664A (ja) 2019-04-04
KR20190030160A (ko) 2019-03-21
KR102542812B1 (ko) 2023-06-14
CN109487838B (zh) 2022-07-01
CN109487838A (zh) 2019-03-19

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