JP6601835B2 - 流体圧回路および作業機械 - Google Patents
流体圧回路および作業機械 Download PDFInfo
- Publication number
- JP6601835B2 JP6601835B2 JP2015086580A JP2015086580A JP6601835B2 JP 6601835 B2 JP6601835 B2 JP 6601835B2 JP 2015086580 A JP2015086580 A JP 2015086580A JP 2015086580 A JP2015086580 A JP 2015086580A JP 6601835 B2 JP6601835 B2 JP 6601835B2
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- JP
- Japan
- Prior art keywords
- valve
- fluid pressure
- boom
- accumulator
- pressure
- 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.)
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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
- E02F3/425—Drive systems for dipper-arms, backhoes 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
- E02F9/2217—Hydraulic or pneumatic drives with energy recovery arrangements, e.g. using accumulators, flywheels
-
- 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
-
- 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
- E02F9/2228—Control of flow rate; Load sensing arrangements using pressure-compensating valves 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
- E02F9/2264—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
- 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
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- 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
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/202—Externally-operated valves mounted in or on the actuator
-
- 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
- E02F3/30—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 with a dipper-arm pivoted on a cantilever beam, i.e. boom
- E02F3/32—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 with a dipper-arm pivoted on a cantilever beam, i.e. boom working downwardly and towards the machine, e.g. with backhoes
-
- 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
Description
B 再生回路
CR 検出部の機能を有する車載コントローラ
HE 作業機械としての油圧ショベル
1 機体
6 作業装置
7c1,7c2 流体圧シリンダとしてのブームシリンダ
12,13 ポンプとしてのメインポンプ
21 タンク
26 メインバルブであるブーム用制御弁
46 アキュムレータである第1のアキュムレータ
61 第1のバルブとしての制御弁
62 第2のバルブとしてのメイン制御弁
63 第3のバルブとしてのブリードオフ弁
Claims (4)
- 操作体の操作に応じてポンプから加圧供給された作動流体により同一動作を同時作動することで作業装置を上下動する複数の流体圧シリンダと、
作動流体により蓄圧されるアキュムレータと、
一の流体圧シリンダのヘッド側とアキュムレータとの連通量を操作体の操作量に応じて変化させる第1のバルブを備え、この第1のバルブを介して一の流体圧シリンダのヘッド側から押し出された作動流体をアキュムレータに蓄圧させる蓄圧回路と、
少なくともいずれかの流体圧シリンダの軸力が所定以上であるときに複数の流体圧シリンダのロッド側間およびヘッド側間をそれぞれ連通し、流体圧シリンダの軸力が所定未満で蓄圧回路によりアキュムレータに蓄圧させるときに複数の流体圧シリンダのヘッド側間の連通を遮断するとともに複数の流体圧シリンダのうち他の流体圧シリンダのヘッド側と一および他の流体圧シリンダのそれぞれのロッド側とを連通する第2のバルブと、
少なくともいずれかの流体圧シリンダの軸力が所定以上であるときに第1のバルブとタンクとを連通して作動流体をタンクに戻す第3のバルブと、
この第3のバルブにより第1のバルブとタンクとを連通した状態でポンプから加圧供給された作動流体を複数の流体圧シリンダのロッド側に供給するメインバルブと
を具備したことを特徴とする流体圧回路。 - 少なくともいずれかの流体圧シリンダのヘッド圧とロッド圧との差により流体圧シリンダの軸力を検出する検出部
を具備したことを特徴とする請求項1記載の流体圧回路。 - 第2のバルブを備え、この第2のバルブを介して、他の流体圧シリンダのヘッド側から押し出された作動流体を一および他の流体圧シリンダに再生する再生回路を具備した
ことを特徴とする請求項1または2記載の流体圧回路。 - 機体と、
機体に搭載された作業装置と、
作業装置を上下動する複数の流体圧シリンダに対して設けられた請求項1乃至3いずれか記載の流体圧回路と
を具備したことを特徴とする作業機械。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2015086580A JP6601835B2 (ja) | 2015-04-21 | 2015-04-21 | 流体圧回路および作業機械 |
PCT/EP2016/058680 WO2016169939A1 (en) | 2015-04-21 | 2016-04-20 | Hydraulic circuit and working machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2015086580A JP6601835B2 (ja) | 2015-04-21 | 2015-04-21 | 流体圧回路および作業機械 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2016205495A JP2016205495A (ja) | 2016-12-08 |
JP6601835B2 true JP6601835B2 (ja) | 2019-11-06 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2015086580A Active JP6601835B2 (ja) | 2015-04-21 | 2015-04-21 | 流体圧回路および作業機械 |
Country Status (2)
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JP (1) | JP6601835B2 (ja) |
WO (1) | WO2016169939A1 (ja) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6493916B2 (ja) * | 2015-04-21 | 2019-04-03 | キャタピラー エス エー アール エル | 流体圧回路および作業機械 |
JP6580618B2 (ja) * | 2017-03-21 | 2019-09-25 | 日立建機株式会社 | 建設機械 |
CN107939752B (zh) * | 2017-10-10 | 2019-11-26 | 三一重机有限公司 | 制动节能液压系统及挖掘机 |
JP7082011B2 (ja) | 2018-08-23 | 2022-06-07 | 株式会社神戸製鋼所 | 掘削作業機械の油圧駆動装置 |
JP7096105B2 (ja) * | 2018-08-23 | 2022-07-05 | 株式会社神戸製鋼所 | 掘削作業機械の油圧駆動装置 |
JP7182579B2 (ja) * | 2020-03-27 | 2022-12-02 | 日立建機株式会社 | 作業機械 |
KR20220154496A (ko) * | 2021-05-13 | 2022-11-22 | 볼보 컨스트럭션 이큅먼트 에이비 | 유압기계 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007170485A (ja) * | 2005-12-20 | 2007-07-05 | Shin Caterpillar Mitsubishi Ltd | エネルギ回収・再生装置 |
JP4702894B2 (ja) * | 2006-10-20 | 2011-06-15 | キャタピラー エス エー アール エル | 油圧ショベルにおける油圧制御システム |
US7823379B2 (en) * | 2006-11-14 | 2010-11-02 | Husco International, Inc. | Energy recovery and reuse methods for a hydraulic system |
JP5257807B2 (ja) * | 2006-11-14 | 2013-08-07 | フスコ インターナショナル インコーポレイテッド | 油圧システムのためのエネルギー回収及び再利用技術 |
JP5626712B2 (ja) * | 2007-04-23 | 2014-11-19 | フスコ インターナショナル インコーポレイテッドHusco International, Inc. | 油圧システムのためのエネルギー回収及び再利用技術 |
US7634911B2 (en) * | 2007-06-29 | 2009-12-22 | Caterpillar Inc. | Energy recovery system |
US20090025379A1 (en) * | 2007-07-24 | 2009-01-29 | Parker-Hannifin Corporation | System for recovering energy from a hydraulic lift |
JP2009275775A (ja) * | 2008-05-13 | 2009-11-26 | Caterpillar Japan Ltd | 流体圧シリンダ制御回路 |
JP2010060057A (ja) * | 2008-09-04 | 2010-03-18 | Caterpillar Japan Ltd | 作業機械における油圧制御システム |
JP6090781B2 (ja) * | 2013-01-28 | 2017-03-08 | キャタピラー エス エー アール エル | エンジンアシスト装置および作業機械 |
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2015
- 2015-04-21 JP JP2015086580A patent/JP6601835B2/ja active Active
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2016
- 2016-04-20 WO PCT/EP2016/058680 patent/WO2016169939A1/en active Application Filing
Also Published As
Publication number | Publication date |
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JP2016205495A (ja) | 2016-12-08 |
WO2016169939A1 (en) | 2016-10-27 |
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