JPS622805U - - Google Patents

Info

Publication number
JPS622805U
JPS622805U JP1985094039U JP9403985U JPS622805U JP S622805 U JPS622805 U JP S622805U JP 1985094039 U JP1985094039 U JP 1985094039U JP 9403985 U JP9403985 U JP 9403985U JP S622805 U JPS622805 U JP S622805U
Authority
JP
Japan
Prior art keywords
hydraulic actuators
actuator
types
valve
selection valve
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
JP1985094039U
Other languages
English (en)
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 filed Critical
Priority to JP1985094039U priority Critical patent/JPS622805U/ja
Priority to US06/868,066 priority patent/US4736673A/en
Priority to CA000511324A priority patent/CA1263069A/en
Priority to AU58892/86A priority patent/AU561324B2/en
Priority to DE8686401335T priority patent/DE3660508D1/de
Priority to EP86401335A priority patent/EP0206934B1/en
Publication of JPS622805U publication Critical patent/JPS622805U/ja
Pending legal-status Critical Current

Links

Classifications

    • 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
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
    • F15B11/024—Systems essentially incorporating special features for controlling the speed or actuating force of an output member by means of differential connection of the servomotor lines, e.g. regenerative circuits
    • 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
    • E02F9/2264—Arrangements or adaptations of elements for hydraulic drives
    • E02F9/2267—Valves or distributors
    • 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
    • F15B2211/30505—Non-return valves, i.e. check valves
    • 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
    • F15B2211/30505—Non-return valves, i.e. check valves
    • F15B2211/3051—Cross-check valves
    • 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
    • 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
    • F15B2211/3056—Assemblies of multiple valves
    • F15B2211/30565—Assemblies of multiple valves having multiple valves for a single output member, e.g. for creating higher valve function by use of multiple valves like two 2/2-valves replacing a 5/3-valve
    • F15B2211/3058—Assemblies of multiple valves having multiple valves for a single output member, e.g. for creating higher valve function by use of multiple valves like two 2/2-valves replacing a 5/3-valve having additional valves for interconnecting the fluid chambers of a double-acting actuator, e.g. for regeneration mode or for floating mode
    • 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
    • F15B2211/31—Directional control characterised by the positions of the valve element
    • F15B2211/3105—Neutral or centre positions
    • F15B2211/3116—Neutral or centre positions the pump port being open in the centre position, e.g. so-called open centre
    • 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
    • F15B2211/31—Directional control characterised by the positions of the valve element
    • F15B2211/3122—Special positions other than the pump port being connected to working ports or the working ports being connected to the return line
    • F15B2211/3133—Regenerative position connecting the working ports or connecting the working ports to the pump, e.g. for high-speed approach stroke
    • 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
    • F15B2211/315—Directional control characterised by the connections of the valve or valves in the circuit
    • F15B2211/3157—Directional control characterised by the connections of the valve or valves in the circuit being connected to a pressure source, an output member and a return line
    • F15B2211/31588—Directional control characterised by the connections of the valve or valves in the circuit being connected to a pressure source, an output member and a return line having a single pressure source and multiple output members
    • 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
    • F15B2211/32—Directional control characterised by the type of actuation
    • F15B2211/327—Directional control characterised by the type of actuation electrically or electronically
    • 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
    • F15B2211/50—Pressure control
    • F15B2211/505—Pressure control characterised by the type of pressure control means
    • F15B2211/50509—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means
    • F15B2211/50518—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means using pressure relief valves
    • 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
    • F15B2211/50—Pressure control
    • F15B2211/515—Pressure control characterised by the connections of the pressure control means in the circuit
    • F15B2211/5153—Pressure control characterised by the connections of the pressure control means in the circuit being connected to an output member and a directional control valve
    • 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
    • F15B2211/50—Pressure control
    • F15B2211/52—Pressure control characterised by the type of actuation
    • F15B2211/528—Pressure control characterised by the type of actuation actuated by fluid pressure
    • 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
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/71—Multiple output members, e.g. multiple hydraulic motors or cylinders
    • 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
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/75—Control of speed of the output member
    • 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
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/78—Control of multiple output members

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Operation Control Of Excavators (AREA)
  • Lifting Devices For Agricultural Implements (AREA)
  • Fluid-Pressure Circuits (AREA)

Description

【図面の簡単な説明】
第１図は本考案に係る第１の実施例を示す油圧
回路図、第２図及び第３図はそれぞれ第１図のア
クチエータ選択弁を具体化して示す断面図、第４
図は本考案に係る第２の実施例を示す油圧回路図
、第５図及び第６図はそれぞれ本考案を利用する
ことができる農用トラクタ及びクレーンの概要側
面図、第７図は従来技術に係る油圧回路図、第８
図は従来技術に係るシリンダ増速装置の油圧回路
図である。 ６・７……油圧アクチエータ、７ａ……ボトム
側油室、７ｂ……ヘツド側油室、９……油圧ポン
プ、１６……方向切換弁、１７……アクチエータ
選択弁、２０……弁体、２９……絞り、Ａ・Ｃ…
…選択位置、Ｂ……高速伸長位置、Ｐ１……圧力
ポート、Ｐ２……戻りポート、Ｙ１……シリンダ
側ボトムポート、Ｙ２……シリンダ側ヘツドポー
ト。

Claims (1)

  1. 【実用新案登録請求の範囲】 １ 油圧ポンプ９に方向切換弁１６とアクチエー
    タ選択弁１７とを直列に介して複数種の油圧アク
    チエータ６・７を選択的に連通し、複数種の油圧
    アクチエータ６・７のうちから油圧作動させよう
    とする油圧アクチエータ６・７をアクチエータ選
    択弁１７により選択し、この選択された油圧アク
    チエータ６・７を方向切換弁１６により作動させ
    るように構成し、複数種の油圧アクチエータ６・
    ７のうちの少なくとも特定の一種に油圧シリンダ
    を用いて構成した複数種の油圧アクチエータの選
    択操作装置において、 アクチエータ選択弁１７の弁体２０に複数種の
    各油圧アクチエータ６・７に対応する各アクチエ
    ータ選択位置Ａ・Ｃのほかに、前記特定の油圧シ
    リンダ７の高速伸長位置Ｂを設け、この高速伸長
    位置Ｂは、アクチエータ選択弁１７の圧力ポート
    Ｐ１を特定の油圧シリンダ７のボトム側油室７ａ
    に連通するとともに、そのヘツド側油室７ｂをも
    ボトム側油室７ａに連通するように構成したこと
    を特徴とする複数種の油圧アクチエータの撰択操
    作装置。 ２ 高速伸長位置Ｂはアクチエータ選択弁１７の
    戻りポートＰ２をブロツクするように構成した実
    用新案登録請求の範囲第１項に記載した複数種の
    油圧アクチエータの選択操作装置。 ３ 高速伸長位置Ｂはヘツド側油室７ｂをアクチ
    エータ選択弁１７の戻りポートＰ２に絞り２９を
    介して連通するように構成した実用新案登録請求
    の範囲第１項に記載した複数種の油圧アクチエー
    タの選択操作装置。
JP1985094039U 1985-06-20 1985-06-20 Pending JPS622805U (ja)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP1985094039U JPS622805U (ja) 1985-06-20 1985-06-20
US06/868,066 US4736673A (en) 1985-06-20 1986-05-29 Selective control device for plural kinds of oil-hydraulic actuators
CA000511324A CA1263069A (en) 1985-06-20 1986-06-11 Selective control device for plural kinds of oil- hydraulic actuators
AU58892/86A AU561324B2 (en) 1985-06-20 1986-06-16 Fluid actuator control system
DE8686401335T DE3660508D1 (en) 1985-06-20 1986-06-18 A selective control device for plural kinds of oil-hydraulic actuators.
EP86401335A EP0206934B1 (en) 1985-06-20 1986-06-18 A selective control device for plural kinds of oil-hydraulic actuators.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1985094039U JPS622805U (ja) 1985-06-20 1985-06-20

Publications (1)

Publication Number Publication Date
JPS622805U true JPS622805U (ja) 1987-01-09

Family

ID=14099425

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1985094039U Pending JPS622805U (ja) 1985-06-20 1985-06-20

Country Status (6)

Country Link
US (1) US4736673A (ja)
EP (1) EP0206934B1 (ja)
JP (1) JPS622805U (ja)
AU (1) AU561324B2 (ja)
CA (1) CA1263069A (ja)
DE (1) DE3660508D1 (ja)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0247252U (ja) * 1988-09-26 1990-03-30
WO1990007651A1 (en) * 1988-12-27 1990-07-12 Kabushiki Kaisha Komatsu Seisakusho Hydraulic controller
JPH0328501A (ja) * 1989-06-26 1991-02-06 Komatsu Ltd 作業機シリンダの制御弁装置
JPH0367505U (ja) * 1989-11-02 1991-07-02
JP2010210072A (ja) * 2009-03-12 2010-09-24 Sumitomo (Shi) Construction Machinery Co Ltd 作業機械の油圧制御システム
JP2019173866A (ja) * 2018-03-28 2019-10-10 株式会社クボタ 作業機の油圧システム

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US5727342A (en) * 1996-04-18 1998-03-17 Wain-Roy, Inc. Hydraulic latch pin assembly for coupling a tool to a construction equipment
DE19735482B4 (de) * 1997-08-16 2006-08-10 Bosch Rexroth Aktiengesellschaft Hydraulisches System mit einem Differentialzylinder und einem Eilgangventil
DE19744327C1 (de) * 1997-10-08 1998-10-22 Walterscheid Gmbh Gkn Vorrichtung zur Stabilisierung der Unterlenker eines Traktors
US5907991A (en) * 1997-12-22 1999-06-01 Caterpillar Inc. Quick drop valve control
US6431785B1 (en) 2000-06-05 2002-08-13 Wec Co. Direct pin quick coupler
US6431050B1 (en) 2000-06-26 2002-08-13 Caterpillar Inc. Apparatus for multiplexing a plurality of hydraulic cylinders
JP4454131B2 (ja) * 2000-09-26 2010-04-21 日立建機株式会社 建設機械の油圧再生装置及び建設機械
US6520593B2 (en) 2001-03-13 2003-02-18 Caterpillar Inc Hydraulic positioning system
FR2868794B1 (fr) * 2004-04-13 2006-07-07 Etude Et D Innovation Dans Le Systeme de commande de la synchronisation des mouvements des deux parties d'un outil porte par un chargeur
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
KR101500744B1 (ko) * 2008-11-19 2015-03-09 두산인프라코어 주식회사 건설기계의 붐 실린더 제어회로
CN101748766B (zh) * 2009-12-17 2011-11-09 三一重机有限公司 一种挖掘机执行机构的压力控制方法及其控制回路
US9163644B2 (en) * 2010-07-28 2015-10-20 Illinois Tool Works Inc. Hydraulic tool control with electronically adjustable flow
US20120117959A1 (en) * 2010-11-17 2012-05-17 Illinois Tool Works Inc. Remote Control Circuit for a Hydraulically Operated Device
KR101877988B1 (ko) * 2011-12-28 2018-07-12 두산인프라코어 주식회사 건설기계의 붐 실린더 제어회로
DE102012001562A1 (de) * 2012-01-27 2013-08-01 Robert Bosch Gmbh Ventilanordnung für eine mobile Arbeitsmaschine
CN102628284B (zh) * 2012-04-27 2014-04-23 山河智能装备股份有限公司 一种挖掘机油路控制装置
KR101250718B1 (ko) 2012-12-14 2013-04-03 안성공업주식회사 프론트로더 유압장치
EP3181763A1 (en) * 2015-12-15 2017-06-21 Caterpillar Global Mining LLC Hydraulic clam actuator valve block
ITUB20160750A1 (it) * 2016-02-15 2017-08-15 Atlantic Fluid Tech S R L Valvola deviatrice di flusso pilotata
US10405440B2 (en) 2017-04-10 2019-09-03 Romello Burdoucci System and method for interactive protection of a mobile electronic device
CN112096675B (zh) * 2019-09-26 2022-10-04 上海圣克赛斯液压股份有限公司 拦焦机液压控制系统
JP7530311B2 (ja) * 2021-02-12 2024-08-07 川崎重工業株式会社 油圧ショベル駆動システム

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JPS5635806A (en) * 1979-09-01 1981-04-08 Sanyo Kiki Kk Compound oil pressure circuit
US4723476A (en) * 1982-02-22 1988-02-09 The Cessna Aircraft Company Regenerative valve
JPS5934721U (ja) * 1982-08-26 1984-03-03 竹内工業株式会社 口紅等の収納容器
DE3245288A1 (de) * 1982-12-03 1984-06-14 O & K Orenstein & Koppel Ag, 1000 Berlin Verfahren zur einsparung von energie beim stellen eines ausruestungszylinders an einem hydraulikbagger durch eine hydraulikschaltung
US4610193A (en) * 1983-10-26 1986-09-09 Deere & Company Load control system
US4487106A (en) * 1983-11-04 1984-12-11 Towmotor Corporation Fluid operated system
JPS60154454U (ja) * 1984-03-26 1985-10-15 三陽機器株式会社 農用トラクタに付設した作業機の油圧駆動装置

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JPS59233030A (ja) * 1983-06-17 1984-12-27 Sumitomo Heavy Ind Ltd 油圧シヨベルのシリンダ再生回路

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0247252U (ja) * 1988-09-26 1990-03-30
WO1990007651A1 (en) * 1988-12-27 1990-07-12 Kabushiki Kaisha Komatsu Seisakusho Hydraulic controller
JPH0328501A (ja) * 1989-06-26 1991-02-06 Komatsu Ltd 作業機シリンダの制御弁装置
JPH0367505U (ja) * 1989-11-02 1991-07-02
JP2010210072A (ja) * 2009-03-12 2010-09-24 Sumitomo (Shi) Construction Machinery Co Ltd 作業機械の油圧制御システム
JP2019173866A (ja) * 2018-03-28 2019-10-10 株式会社クボタ 作業機の油圧システム

Also Published As

Publication number Publication date
EP0206934B1 (en) 1988-08-10
US4736673A (en) 1988-04-12
CA1263069A (en) 1989-11-21
AU5889286A (en) 1987-01-29
EP0206934A1 (en) 1986-12-30
DE3660508D1 (en) 1988-09-15
AU561324B2 (en) 1987-05-07

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