EP2039837B1 - Châssis porteur d'une excavatrice. - Google Patents
Châssis porteur d'une excavatrice. Download PDFInfo
- Publication number
- EP2039837B1 EP2039837B1 EP07425583A EP07425583A EP2039837B1 EP 2039837 B1 EP2039837 B1 EP 2039837B1 EP 07425583 A EP07425583 A EP 07425583A EP 07425583 A EP07425583 A EP 07425583A EP 2039837 B1 EP2039837 B1 EP 2039837B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- frame
- outlet
- excavator
- cavity
- cavities
- 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.)
- Active
Links
- 239000000463 material Substances 0.000 claims abstract description 4
- 239000007788 liquid Substances 0.000 claims description 3
- 239000004576 sand Substances 0.000 description 3
- 239000008187 granular material Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
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.
- US 2003/150138 discloses an excavator with an under carriage having a hollow frame. Inside this hollow frame there is a fuel tank formed as one with said hollow frame and compartmentalized.
- a bottom frame according to claim 1 is provided.
- Said cavity is preferably filled at least partly with granular aggregate or a liquid.
- 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.
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Component Parts Of Construction Machinery (AREA)
- Forklifts And Lifting Vehicles (AREA)
- Earth Drilling (AREA)
Claims (7)
- Châssis inférieur (2) d' une pelleteuse, comprenant :- plusieurs éléments structuraux (10, 11), dont au moins une partie définit une cavité (20), ladite cavité comportant une entrée (21) et- des moyens de fixation (13) pour les roues ou les chenilles, ladite cavité (20) étant appropriée pour recevoir un matériau de contrepoids et ledit matériau de contrepoids étant introduit dans ladite cavité (20) par ladite entrée (21), caractérisé en ce que ladite cavité (20) comprend en plus une sortie (22) et est déchargée par ladite sortie (22), et en ce que ladite sortie (22) comprend un dispositif de fermeture amovible (26) pour ouvrir/fermer ladite sortie (22).
- Châssis selon la revendication 1, caractérisé en ce que ladite cavité (20) est remplie au moins en partie d' un agrégat granulaire ou d' un liquide.
- Châssis selon la revendication 1 or 2, caractérisé en ce que ladite entrée (21) et ladite sortie (22) sont obturées par des bouchons amovibles (25, 26).
- Châssis selon l'une quelconque des revendications précédentes, caractérisé en ce que ladite entrée (21) et ladite sortie (22) sont façonnées dans des parois respectives sensiblement horizontales (15, 16).
- Châssis selon la revendication 4, caractérisé en ce que ladite entrée (21) et ladite sortie (22) sont désaxées verticalement.
- Châssis selon l'une quelconque des revendications précédentes, caractérisé en ce qu' il comprend un certain nombre de dites cavités (20), les dites cavités étant situées symétriquement et définissant des volumes symétriques par rapport à un axe longitudinal horizontal (12) coïncidant avec un sens de déplacement de la dite pelleteuse (1).
- Châssis selon l'une quelconque des revendications précédentes, caractérisé en ce qu' il comprend un certain nombre de dites cavités (20), et une articulation (6) destinée à supporter et à faire tourner un châssis supérieur (4) de ladite pelleteuse (1), lesdites cavités (20) étant diamétralement opposées autour de ladite articulation (6).
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE602007010780T DE602007010780D1 (de) | 2007-09-21 | 2007-09-21 | Tragrahmen eines Baggers |
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. |
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 EP2039837A1 (fr) | 2009-03-25 |
EP2039837B1 true 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) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT508733B1 (de) * | 2009-08-31 | 2011-09-15 | Sandvik Mining & Constr Oy | Teilschnittschräm- bzw. vortriebsmaschine |
Family Cites Families (8)
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 |
JP3829071B2 (ja) | 2001-05-31 | 2006-10-04 | 新キャタピラー三菱株式会社 | 建設機械 |
KR100621479B1 (ko) * | 2002-10-09 | 2006-09-13 | 히다치 겡키 가부시키 가이샤 | 건설 기계의 트랙 프레임 |
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 |
-
2007
- 2007-09-21 EP EP07425583A patent/EP2039837B1/fr active Active
- 2007-09-21 DE DE602007010780T patent/DE602007010780D1/de active Active
- 2007-09-21 AT AT07425583T patent/ATE489508T1/de not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
EP2039837A1 (fr) | 2009-03-25 |
DE602007010780D1 (de) | 2011-01-05 |
ATE489508T1 (de) | 2010-12-15 |
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