EP0735200A1 - Pelle avec un bras à déplacement latéral - Google Patents

Pelle avec un bras à déplacement latéral Download PDF

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Publication number
EP0735200A1
EP0735200A1 EP96301964A EP96301964A EP0735200A1 EP 0735200 A1 EP0735200 A1 EP 0735200A1 EP 96301964 A EP96301964 A EP 96301964A EP 96301964 A EP96301964 A EP 96301964A EP 0735200 A1 EP0735200 A1 EP 0735200A1
Authority
EP
European Patent Office
Prior art keywords
boom
arm
pivot
excavator
cylinder arrangement
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Withdrawn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
EP96301964A
Other languages
German (de)
English (en)
Inventor
Toshihiko Mikami
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.)
HANIX EUROPE Ltd
Original Assignee
HANIX EUROPE 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 HANIX EUROPE Ltd filed Critical HANIX EUROPE Ltd
Publication of EP0735200A1 publication Critical patent/EP0735200A1/fr
Withdrawn legal-status Critical Current

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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
    • E02F3/30—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
    • E02F3/307—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 the boom and the dipper-arm being connected so as to permit relative movement in more than one plane

Definitions

  • the present invention relates to an excavator and to a digging member for an excavator.
  • the invention has particular, but not exclusive reference to vehicles commonly referred to as mini-excavators and to digging members therefor.
  • the mini-excavator 10 comprises a platform 11 mounted on a pair of tracks 12,13.
  • the platform 11 is rotatable through 360°.
  • a driver's cabin is located on the platform 11.
  • a digging member 14 is provided at the front of the platform 11.
  • the digging member 14 comprises a first boom 15, the base of which is connected to the platform 11 via a horizontal pivot.
  • a hydraulic piston and cylinder arrangement 16 is pivotally connected at its ends to the upper part of the first boom 15 and the platform 11 respectively.
  • the free end of the upper part of the first boom 15 is connected via a vertical pivot 17 to a second boom 18.
  • the second end of the second boom 18 is connected to a third boom 19 by a vertical pivot 20.
  • This second end of the second boom 18 and the first boom 15 are connected by pivot joints to a hydraulic piston and cylinder arrangement 21.
  • a further link 22 is pivotally connected at its ends to the first 15 and third booms 19 respectively in order to restrict sideways movement of the third boom 19 as a safety precaution. It is noted that the third boom 19 extends rearwardly of the pivotal connection 20 with the second boom 18.
  • An arm 23 extends forwardly of the third boom 19.
  • the arm 23 is connected to the front of the third boom 19 by a horizontal pivot 24 such that the arm 23 may swing downwardly.
  • the arm 23 is also pivotally connected to the rear of the third boom 19 by a hydraulic piston and cylinder arrangement 25.
  • This piston and cylinder arrangement 25 is stored in a recess in the third boom 19.
  • a shovel 26 is pivotally connected to the free end of the arm 23.
  • the shovel 26 is also connected to the arm 23 by a hydraulic piston and cylinder arrangement 27.
  • the present invention has been made from a consideration of this problem.
  • an excavator having a digging member, the digging member comprising:-
  • an excavator digging member comprising:-
  • the structure eliminates the need for an extension of the third boom to the rear of the pivotal connection between the second boom and body so as to accommodate a piston cylinder arrangement.
  • the excavator can work satisfactorily in more confined spaces.
  • a small portion of the third body will be located to the rear of the second pivot in order for the pivot joint to securely mate with the third body.
  • the length of this portion will generally be less than a tenth of the length of the second boom.
  • the means for moving the arm comprises a pressure fluid operable piston and cylinder arrangement.
  • Such arrangements are generally hydraulic or pneumatic.
  • the ends of the piston and cylinder arrangement are connected to the arm and the third body.
  • the point of connection of the piston and cylinder arrangement with the third body is provided to the front of the second pivot.
  • the piston and cylinder arrangement is stored in a recess in the arm.
  • a mini-excavator 40 comprises a platform 41 mounted on a pair of tracks 42,43.
  • the platform 41 is rotatable through 360°.
  • a driver's cabin is located on the platform 41.
  • a digging member 40 is provided at the front of the platform 41.
  • the digging member 44 comprises a first boom 45 which is connected at its base to the platform 41 via a horizontal pivot.
  • a hydraulic piston and cylinder arrangement 46 is pivotally connected at its ends to the upper part of the first boom 45 and the platform 41 respectively.
  • the free end of the upper part of the first boom 45 is connected via a vertical pivot 47 to a second boom 48.
  • the second end of the second boom 48 is connected to a third body 49 by a vertical pivot 50.
  • This second end of the second boom 48 and the first boom 45 are connected by pivot joints to a hydraulic piston and cylinder arrangement 51.
  • a further link 52 is optionally provided between the first boom 45 and third body 49 respectively in order to restrict lateral movement of the third body 49.
  • An arm 53 extends forwardly of the third body 49.
  • the arm 53 is connected to the front of the third body 49 by a horizontal pivot 54 such that the arm 53 may swing downwardly.
  • a hydraulic piston and cylinder arrangement 55 is pivotally connected at its ends to the arm 53 and the front of the third body 49. This piston and cylinder arrangement 55 is stored in a recess in the arm 53. It is noted that both points of attachment of this piston and cylinder arrangement are located in front of the pivotal attachment 50 between the second boom and third body. It is also noted that the third body does not extend to a substantial extent to the rear of the pivot 50 between the second boom 48 and body 49.
  • a shovel 56 is pivotally connected to the free end of the arm 53. The shovel 56 is also connected to the arm 53 by a hydraulic piston and cylinder arrangement 57.
  • lateral movement of the arm 53 is achieved by displacing the arm 53 relative to the first boom 45.
  • the rear of the third body 49 does not extend rearwardly of the pivotal connection between the second boom 48 and the third body 49.
  • the machine may operate in smaller working spaces than known excavators.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Component Parts Of Construction Machinery (AREA)
EP96301964A 1995-03-24 1996-03-21 Pelle avec un bras à déplacement latéral Withdrawn EP0735200A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9506078 1995-03-24
GBGB9506078.6A GB9506078D0 (en) 1995-03-24 1995-03-24 Excavator

Publications (1)

Publication Number Publication Date
EP0735200A1 true EP0735200A1 (fr) 1996-10-02

Family

ID=10771858

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96301964A Withdrawn EP0735200A1 (fr) 1995-03-24 1996-03-21 Pelle avec un bras à déplacement latéral

Country Status (2)

Country Link
EP (1) EP0735200A1 (fr)
GB (1) GB9506078D0 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1146174A1 (fr) * 1998-08-31 2001-10-17 Yanmar Diesel Engine Co. Ltd. Machine de terrassement a tres petit pivotement

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4110991A1 (de) * 1990-04-11 1991-10-17 Kubota Kk Loeffelbagger
WO1993019252A1 (fr) * 1992-03-20 1993-09-30 Comet-Itr S.P.A. Machine de travail equipee d'un bras articule, deplaçable lateralement, dote a son extremite des dispositifs de travail respectifs

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4110991A1 (de) * 1990-04-11 1991-10-17 Kubota Kk Loeffelbagger
WO1993019252A1 (fr) * 1992-03-20 1993-09-30 Comet-Itr S.P.A. Machine de travail equipee d'un bras articule, deplaçable lateralement, dote a son extremite des dispositifs de travail respectifs

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1146174A1 (fr) * 1998-08-31 2001-10-17 Yanmar Diesel Engine Co. Ltd. Machine de terrassement a tres petit pivotement
EP1146174A4 (fr) * 1998-08-31 2003-01-02 Yanmar Diesel Engine Co Machine de terrassement a tres petit pivotement

Also Published As

Publication number Publication date
GB9506078D0 (en) 1995-05-10

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Effective date: 19970403