DE69013556D1 - Hydraulischer Kreislauf für ein Heckbaggerarbeitsgerät. - Google Patents

Hydraulischer Kreislauf für ein Heckbaggerarbeitsgerät.

Info

Publication number
DE69013556D1
DE69013556D1 DE69013556T DE69013556T DE69013556D1 DE 69013556 D1 DE69013556 D1 DE 69013556D1 DE 69013556 T DE69013556 T DE 69013556T DE 69013556 T DE69013556 T DE 69013556T DE 69013556 D1 DE69013556 D1 DE 69013556D1
Authority
DE
Germany
Prior art keywords
hydraulic circuit
backhoe tool
backhoe
tool
hydraulic
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.)
Expired - Fee Related
Application number
DE69013556T
Other languages
English (en)
Other versions
DE69013556T2 (de
Inventor
Kazuyoshi Arii
Masaru Kumatani
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.)
Kubota Corp
Original Assignee
Kubota 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 Kubota Corp filed Critical Kubota Corp
Application granted granted Critical
Publication of DE69013556D1 publication Critical patent/DE69013556D1/de
Publication of DE69013556T2 publication Critical patent/DE69013556T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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
    • E02F3/43—Control of dipper or bucket position; Control of sequence of drive operations
    • 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
    • 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
    • E02F9/2221—Control of flow rate; Load sensing arrangements
    • E02F9/2239—Control of flow rate; Load sensing arrangements using two or more pumps with cross-assistance
DE69013556T 1989-04-18 1990-03-09 Hydraulischer Kreislauf für ein Heckbaggerarbeitsgerät. Expired - Fee Related DE69013556T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1099072A JPH0751796B2 (ja) 1989-04-18 1989-04-18 バックホウの油圧回路

Publications (2)

Publication Number Publication Date
DE69013556D1 true DE69013556D1 (de) 1994-12-01
DE69013556T2 DE69013556T2 (de) 1995-03-02

Family

ID=14237686

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69013556T Expired - Fee Related DE69013556T2 (de) 1989-04-18 1990-03-09 Hydraulischer Kreislauf für ein Heckbaggerarbeitsgerät.

Country Status (5)

Country Link
US (1) US5136846A (de)
EP (1) EP0393342B1 (de)
JP (1) JPH0751796B2 (de)
KR (1) KR940008634B1 (de)
DE (1) DE69013556T2 (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9425273D0 (en) * 1994-12-14 1995-02-08 Trinova Ltd Hydraulic control system
JP3681833B2 (ja) * 1996-09-19 2005-08-10 ヤンマー株式会社 掘削旋回作業機の油圧回路
US6408676B1 (en) 1999-03-31 2002-06-25 Caterpillar Inc. Method and apparatus for determining the status of a relief valve
US6430850B1 (en) * 2000-07-25 2002-08-13 Deere & Company Seat switch activated pump
JP3992612B2 (ja) * 2002-12-26 2007-10-17 株式会社クボタ バックホウの油圧回路構造
US7047735B2 (en) * 2004-07-30 2006-05-23 Deere & Company Increasing hydraulic flow to tractor attachments
US8051651B2 (en) * 2007-08-30 2011-11-08 Coneqtec Corp. Hydraulic flow control system
US8001751B2 (en) * 2007-09-14 2011-08-23 Cnh America Llc Method for gradually relieving pressure in a hydraulic system utilizing reverse fluid flow through a pump of the system
CN112969869B (zh) * 2018-11-01 2022-08-05 Ｋｙｂ株式会社 工作流体供给装置

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2003740C3 (de) * 1970-01-28 1981-05-07 Robert Bosch Gmbh, 7000 Stuttgart Hydraulikanlage mit wenigstens zwei Pumpen
US3922855A (en) * 1971-12-13 1975-12-02 Caterpillar Tractor Co Hydraulic circuitry for an excavator
US3910044A (en) * 1973-08-24 1975-10-07 Case Co J I Hydraulic summating system
FR2250908B3 (de) * 1973-11-14 1977-08-12 Massey Ferguson Services Nv
US4024797A (en) * 1975-10-28 1977-05-24 Caterpillar Tractor Co. Spring centered balanced resolver valve
JPS5831485B2 (ja) * 1978-08-23 1983-07-06 株式会社神戸製鋼所 合流ポンプ方式の油圧回路におけるアンロ−ド機構
JPS5965607A (ja) * 1982-10-06 1984-04-13 Hitachi Constr Mach Co Ltd 油圧駆動装置
DE3245728A1 (de) * 1982-12-10 1984-06-14 Gewerkschaft Eisenhütte Westfalia, 4670 Lünen Gleichlaufsteuerung, insbesondere fuer die hauptstationszylinder einer rohrvorpresseinrichtung
JPS6231166A (ja) * 1985-08-01 1987-02-10 Res Dev Corp Of Japan ゲ−ト埋込形半導体素子
EP0235545B1 (de) * 1986-01-25 1990-09-12 Hitachi Construction Machinery Co., Ltd. Hydraulisches Antriebssystem
JPH078601Y2 (ja) * 1987-11-10 1995-03-01 株式会社クボタ バックホウの油圧回路
US4986075A (en) * 1988-07-26 1991-01-22 Kubota, Ltd. Hydraulic circuit for backhoe

Also Published As

Publication number Publication date
EP0393342A3 (de) 1991-06-12
EP0393342A2 (de) 1990-10-24
EP0393342B1 (de) 1994-10-26
KR940008634B1 (ko) 1994-09-24
KR900016555A (ko) 1990-11-13
JPH02279830A (ja) 1990-11-15
DE69013556T2 (de) 1995-03-02
US5136846A (en) 1992-08-11
JPH0751796B2 (ja) 1995-06-05

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee