KR102542812B1 - 유압 회로 - Google Patents

유압 회로 Download PDF

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Publication number
KR102542812B1
KR102542812B1 KR1020180091168A KR20180091168A KR102542812B1 KR 102542812 B1 KR102542812 B1 KR 102542812B1 KR 1020180091168 A KR1020180091168 A KR 1020180091168A KR 20180091168 A KR20180091168 A KR 20180091168A KR 102542812 B1 KR102542812 B1 KR 102542812B1
Authority
KR
South Korea
Prior art keywords
hydraulic
passage
side chamber
pressure
boom
Prior art date
Application number
KR1020180091168A
Other languages
English (en)
Korean (ko)
Other versions
KR20190030160A (ko
Inventor
히토시 이와사키
게이스케 고토
Original Assignee
나부테스코 가부시키가이샤
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 나부테스코 가부시키가이샤 filed Critical 나부테스코 가부시키가이샤
Publication of KR20190030160A publication Critical patent/KR20190030160A/ko
Application granted granted Critical
Publication of KR102542812B1 publication Critical patent/KR102542812B1/ko

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    • 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
    • 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
    • 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
    • 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
    • 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
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
    • F15B13/0401—Valve members; Fluid interconnections therefor
    • 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
    • F15B2211/30525—Directional control valves, e.g. 4/3-directional control valve
KR1020180091168A 2017-09-13 2018-08-06 유압 회로 KR102542812B1 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2017176015A JP6999336B2 (ja) 2017-09-13 2017-09-13 油圧回路
JPJP-P-2017-176015 2017-09-13

Publications (2)

Publication Number Publication Date
KR20190030160A KR20190030160A (ko) 2019-03-21
KR102542812B1 true KR102542812B1 (ko) 2023-06-14

Family

ID=65689507

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020180091168A KR102542812B1 (ko) 2017-09-13 2018-08-06 유압 회로

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
CN109487838B (zh) 2022-07-01
CN109487838A (zh) 2019-03-19
JP6999336B2 (ja) 2022-01-18

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