EP0955415A4 - Pelle hydraulique - Google Patents

Pelle hydraulique

Info

Publication number
EP0955415A4
EP0955415A4 EP98945533A EP98945533A EP0955415A4 EP 0955415 A4 EP0955415 A4 EP 0955415A4 EP 98945533 A EP98945533 A EP 98945533A EP 98945533 A EP98945533 A EP 98945533A EP 0955415 A4 EP0955415 A4 EP 0955415A4
Authority
EP
European Patent Office
Prior art keywords
working machine
hydraulic shovel
boom
earth
excavation
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.)
Withdrawn
Application number
EP98945533A
Other languages
German (de)
English (en)
Other versions
EP0955415A1 (fr
Inventor
Tooru Kobayashi
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.)
Hitachi Construction Machinery Co Ltd
Original Assignee
Hitachi Construction Machinery Co Ltd
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 Hitachi Construction Machinery Co Ltd filed Critical Hitachi Construction Machinery Co Ltd
Publication of EP0955415A1 publication Critical patent/EP0955415A1/fr
Publication of EP0955415A4 publication Critical patent/EP0955415A4/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • E02F9/2025—Particular purposes of control systems not otherwise provided for
    • E02F9/2033—Limiting the movement of frames or implements, e.g. to avoid collision between implements and the cabin
    • 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
    • E02F9/2278—Hydraulic circuits
    • E02F9/2285—Pilot-operated systems

Abstract

L'invention concerne une pelle hydraulique capable d'améliorer une capacité mécanique, caractérisant une machine à travailler (4) par rapport à une profondeur de terrassement, jusqu'à une limite à laquelle la même capacité est pleinement opérationnelle lorsque l'opération de terrassement est réalisée par la même machine à travailler (4), sur ladite pelle hydraulique équipée d'une lame de terrassement (3). La pelle hydraulique comprend un organe de commande (40) conçu pour fournir un signal de commande augmentant progressivement un certain étranglement dans une électrovanne à réduction proportionnelle (17), alors qu'une première flèche (5) est proche d'une zone dangereuse déterminée par le passage d'un angle d'inclinaison de ladite flèche (5) entre un niveau limite et un niveau situé à l'intérieur d'une plage préétablie, au cours des travaux de terrassement effectués par la machine à travailler (4) équipée d'un corps roulant (1) qui fait face à une direction avant. Cet organe de commande a aussi une fonction anti-entrave permettant d'éviter que la première fléche (5) ne s'abaisse excessivement et n'entrave la lame de terrassement (3). La pelle hydraulique comprend en outre un corps mobile (2) qui pivote sensiblement à 180°. Enfin, un interrupteur permutateur (37) est actionné lorsqu'une opération de terrassement est exigée à une profondeur plus importante, une fois le terrassement effectué par la machine à travailler (4) jusqu'à un point proche de la profondeur de terrassement maximum Hd1, invalidant ainsi la fonction anti-entrave et permettant la poursuite des opérations de terrassement jusqu'à une profondeur de terrassement maximum Hd2.
EP98945533A 1997-10-01 1998-09-30 Pelle hydraulique Withdrawn EP0955415A4 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP26872197 1997-10-01
JP26872197 1997-10-01
PCT/JP1998/004402 WO1999016980A1 (fr) 1997-10-01 1998-09-30 Pelle hydraulique

Publications (2)

Publication Number Publication Date
EP0955415A1 EP0955415A1 (fr) 1999-11-10
EP0955415A4 true EP0955415A4 (fr) 2001-01-17

Family

ID=17462431

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98945533A Withdrawn EP0955415A4 (fr) 1997-10-01 1998-09-30 Pelle hydraulique

Country Status (5)

Country Link
EP (1) EP0955415A4 (fr)
JP (1) JP3681409B2 (fr)
AU (1) AU735431B2 (fr)
NZ (1) NZ336119A (fr)
WO (1) WO1999016980A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2917591B1 (fr) 2012-11-07 2018-10-17 Parker Hannifin Corporation Commande régulière d'actionneur hydraulique
EP3974585B1 (fr) * 2020-03-24 2024-01-17 Hitachi Construction Machinery Tierra Co., Ltd. Engin de chantier

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09242110A (ja) * 1996-03-12 1997-09-16 Hitachi Constr Mach Co Ltd 油圧式建設機械の干渉防止装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5819827B2 (ja) * 1975-03-03 1983-04-20 株式会社クボタ ハイドソウチフセツノ ゼンセンカイガタバツクホ−
JP3246794B2 (ja) * 1993-04-30 2002-01-15 日立建機株式会社 作業機の制御装置
JP2793950B2 (ja) * 1993-10-12 1998-09-03 日立建機株式会社 作業機の運転室干渉防止装置

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09242110A (ja) * 1996-03-12 1997-09-16 Hitachi Constr Mach Co Ltd 油圧式建設機械の干渉防止装置

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1998, no. 01 30 January 1998 (1998-01-30) *
See also references of WO9916980A1 *

Also Published As

Publication number Publication date
NZ336119A (en) 2000-10-27
AU9280098A (en) 1999-04-23
WO1999016980A1 (fr) 1999-04-08
AU735431B2 (en) 2001-07-05
JP3681409B2 (ja) 2005-08-10
EP0955415A1 (fr) 1999-11-10

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