EP2039837A1 - Châssis porteur d'une excavatrice. - Google Patents

Châssis porteur d'une excavatrice. Download PDF

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Publication number
EP2039837A1
EP2039837A1 EP07425583A EP07425583A EP2039837A1 EP 2039837 A1 EP2039837 A1 EP 2039837A1 EP 07425583 A EP07425583 A EP 07425583A EP 07425583 A EP07425583 A EP 07425583A EP 2039837 A1 EP2039837 A1 EP 2039837A1
Authority
EP
European Patent Office
Prior art keywords
frame
excavator
outlet
cavities
cavity
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.)
Granted
Application number
EP07425583A
Other languages
German (de)
English (en)
Other versions
EP2039837B1 (fr
Inventor
Gabriele Villa
Massimo Pinto
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.)
New Holland Kobelco Construction Machinery SpA
Original Assignee
New Holland Kobelco Construction Machinery SpA
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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=38961777&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP2039837(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by New Holland Kobelco Construction Machinery SpA filed Critical New Holland Kobelco Construction Machinery SpA
Priority to AT07425583T priority Critical patent/ATE489508T1/de
Priority to EP07425583A priority patent/EP2039837B1/fr
Priority to DE602007010780T priority patent/DE602007010780D1/de
Publication of EP2039837A1 publication Critical patent/EP2039837A1/fr
Application granted granted Critical
Publication of EP2039837B1 publication Critical patent/EP2039837B1/fr
Active legal-status Critical Current
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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
    • E02F9/02—Travelling-gear, e.g. associated with slewing gears
    • 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
    • E02F9/18—Counterweights

Definitions

  • the present invention relates to an excavator bottom frame.
  • an excavator comprises three main parts : a bottom frame, or undercarriage, which moves over the ground on wheels or tracks; a top frame having an operator cab and connected to the bottom frame by a pivot to rotate about a vertical axis; and a front digging or lifting device, e.g. an arm and bucket, fitted to the top frame and operated from the operator cab.
  • a bottom frame or undercarriage, which moves over the ground on wheels or tracks
  • a top frame having an operator cab and connected to the bottom frame by a pivot to rotate about a vertical axis
  • a front digging or lifting device e.g. an arm and bucket
  • the top frame is normally designed to support a counterweight in such a position as to ensure stability of the excavator when digging and/or lifting, and which is normally bolted removably to the top frame.
  • excavators have increasingly heavy counterweights which, for support, call for stronger counterweight-top frame attachments, a stronger or bigger pivot, reinforcing the structure of the top frame, etc.., all of which are relatively expensive and increase the end cost of the excavator.
  • a mass is needed that can be added to a main counterweight to enhance stability of the excavator, and can be removed when not required.
  • One solution to the above drawbacks is to provide a counterweight on the bottom frame in addition to or instead of the counterweight on the top frame.
  • Patent Application DE10014933 describes a removable counterweight housed in a recess on the outside of a platform on the bottom frame, and which can be lifted out of the recess when the excavator travels along highway and the load on the axle of the excavator exceeds the maximum allowable.
  • a bottom frame of an excavator comprising:
  • Said cavity is preferably filled at least partly with granular aggregate.
  • said cavity has an outlet for unloading said material
  • the bottom frame comprises movable closing means for opening/closing said outlet.
  • Number 1 in Figure 1 indicates an excavator (shown schematically) comprising an undercarriage or bottom frame 2 which runs over the ground on tracks 3; a top frame 4 having an operator cab 5 and connected to bottom frame 2 by a pivot 6 to rotate about a vertical axis 7; and an arm 8 which is fitted on the end with a digging or lifting member, is fitted to frame 4, and is operated from operator cab 5.
  • an excavator shown schematically
  • an excavator shown schematically
  • an undercarriage or bottom frame 2 which runs over the ground on tracks 3
  • a top frame 4 having an operator cab 5 and connected to bottom frame 2 by a pivot 6 to rotate about a vertical axis 7
  • an arm 8 which is fitted on the end with a digging or lifting member, is fitted to frame 4, and is operated from operator cab 5.
  • frame 2 comprises structural members defined by two lateral longitudinal members 10 and by intermediate members 11.
  • Longitudinal members 10 are parallel to a horizontal longitudinal axis 12 coincident with the travelling direction of excavator 1, and are fitted on the ends with known fastening devices 13, not described in detail, for connection of tracks 3.
  • Members 11 connect longitudinal members 10 to each other, are located about pivot 6, and are enclosed by a substantially horizontal top plate 15 and bottom plate 16.
  • Members 11 and plates 15, 16 define a number of cavities 20, which can be filled with granular aggregate, in particular, sand, which serves as a removable inner counterweight for excavator 1, in addition to an existing counterweight (not shown) on frame 4.
  • Cavities 20 are four in number, are symmetrical with respect to axis 12, and define symmetrical volumes. More specifically, cavities 20 are arranged in diametrically opposite pairs with respect to axis 7.
  • Cavities 20 have respective inlets 21 formed in plate 15 to insert the granular material; and respective outlets 22 formed in plate 16, and in particular in two lateral portions 23 adjacent to longitudinal members 10.
  • Inlet 21 and outlet 22 of each cavity 20 are offset vertically, and are closed by plugs defined by respective flanged disks or bodies 25, 26 fixed to respective plates 15, 16 by bolts or screws (not shown) screwed about the circular edges of inlet 21 and outlet 22.
  • frame 2 is loaded directly with granular aggregate fed into cavities 20 through inlets 21, with outlets 22 closed. Once the cavities are filled, inlets 21 are also closed.
  • outlets 22 are opened to unload the granular material from cavities 20.
  • the solution proposed therefore provides for applying additional weight without altering and/or reinforcing pivot 6 and/or frame 4, by virtue of the additional weight being applied to frame 2, as opposed to frame 4.
  • the proposed solution is also extremely cheap by requiring no additional and/or specially designed component parts, such as supporting platforms, by which to fit the additional counterweight to frame 2, and by actually employing fillable volumes already available inside the bottom frames of excavators.
  • frame 2 may have attachments for wheel axles, as opposed to tracks.
  • Cavities 20 may also be filled with liquid (as opposed to sand), e.g. with a mixture of water and additives to prevent rusting of frame 2. In which case, sealing must be ensured, e.g. by means of seals, between outlets 22 and the plugs defined by disks 26.
EP07425583A 2007-09-21 2007-09-21 Châssis porteur d'une excavatrice. Active EP2039837B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AT07425583T ATE489508T1 (de) 2007-09-21 2007-09-21 Tragrahmen eines baggers
EP07425583A EP2039837B1 (fr) 2007-09-21 2007-09-21 Châssis porteur d'une excavatrice.
DE602007010780T DE602007010780D1 (de) 2007-09-21 2007-09-21 Tragrahmen eines Baggers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP07425583A EP2039837B1 (fr) 2007-09-21 2007-09-21 Châssis porteur d'une excavatrice.

Publications (2)

Publication Number Publication Date
EP2039837A1 true EP2039837A1 (fr) 2009-03-25
EP2039837B1 EP2039837B1 (fr) 2010-11-24

Family

ID=38961777

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07425583A Active EP2039837B1 (fr) 2007-09-21 2007-09-21 Châssis porteur d'une excavatrice.

Country Status (3)

Country Link
EP (1) EP2039837B1 (fr)
AT (1) ATE489508T1 (fr)
DE (1) DE602007010780D1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011022744A3 (fr) * 2009-08-31 2012-05-10 Sandvik Mining And Construction G.M.B.H. Haveuse ou machine de creusement à attaque partielle

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4231699A (en) * 1979-01-24 1980-11-04 Dresser Industries, Inc. Lower and crawler frame construction for crawler propelled machines
US5154013A (en) * 1991-08-19 1992-10-13 Harnischfeger Corporation Lifting stool for a support tub of a dragline excavating machine
JPH11200420A (ja) * 1998-01-19 1999-07-27 Sumitomo Constr Mach Co Ltd 建設機械のカウンタウエイト
DE10014933A1 (de) 2000-03-20 2001-10-04 Mannesmann Ag Kranfahrzeug
US20030150138A1 (en) 2001-05-31 2003-08-14 Eiji Akahane Construction machine
EP1550600A1 (fr) * 2002-10-09 2005-07-06 Hitachi Construction Machinery Co., Ltd. Armature de guidage pour machine de construction
JP2005220569A (ja) * 2004-02-04 2005-08-18 Kobelco Contstruction Machinery Ltd カウンタウエイト及びカウンタウエイトの製造方法
JP2005264431A (ja) * 2004-03-16 2005-09-29 Kobelco Contstruction Machinery Ltd 作業機械用カウンターウエイトの製造方法、カウンターウエイト及び作業機械

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4231699A (en) * 1979-01-24 1980-11-04 Dresser Industries, Inc. Lower and crawler frame construction for crawler propelled machines
US5154013A (en) * 1991-08-19 1992-10-13 Harnischfeger Corporation Lifting stool for a support tub of a dragline excavating machine
JPH11200420A (ja) * 1998-01-19 1999-07-27 Sumitomo Constr Mach Co Ltd 建設機械のカウンタウエイト
DE10014933A1 (de) 2000-03-20 2001-10-04 Mannesmann Ag Kranfahrzeug
US20030150138A1 (en) 2001-05-31 2003-08-14 Eiji Akahane Construction machine
EP1550600A1 (fr) * 2002-10-09 2005-07-06 Hitachi Construction Machinery Co., Ltd. Armature de guidage pour machine de construction
JP2005220569A (ja) * 2004-02-04 2005-08-18 Kobelco Contstruction Machinery Ltd カウンタウエイト及びカウンタウエイトの製造方法
JP2005264431A (ja) * 2004-03-16 2005-09-29 Kobelco Contstruction Machinery Ltd 作業機械用カウンターウエイトの製造方法、カウンターウエイト及び作業機械

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011022744A3 (fr) * 2009-08-31 2012-05-10 Sandvik Mining And Construction G.M.B.H. Haveuse ou machine de creusement à attaque partielle

Also Published As

Publication number Publication date
ATE489508T1 (de) 2010-12-15
DE602007010780D1 (de) 2011-01-05
EP2039837B1 (fr) 2010-11-24

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