EP1231327B1 - Fräswerkzeug zum Schneiden von hartem Boden und von klebrigem Boden - Google Patents

Fräswerkzeug zum Schneiden von hartem Boden und von klebrigem Boden Download PDF

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Publication number
EP1231327B1
EP1231327B1 EP02290094A EP02290094A EP1231327B1 EP 1231327 B1 EP1231327 B1 EP 1231327B1 EP 02290094 A EP02290094 A EP 02290094A EP 02290094 A EP02290094 A EP 02290094A EP 1231327 B1 EP1231327 B1 EP 1231327B1
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EP
European Patent Office
Prior art keywords
rim
motor
milling
shaft
milling tool
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 - Lifetime
Application number
EP02290094A
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English (en)
French (fr)
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EP1231327A1 (de
Inventor
Philippe Chagnot
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.)
Compagnie du Sol SARL
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Compagnie du Sol SARL
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Publication date
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Publication of EP1231327A1 publication Critical patent/EP1231327A1/de
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    • 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
    • E02F3/18—Dredgers; Soil-shifting machines mechanically-driven with digging wheels turning round an axis, e.g. bucket-type wheels
    • E02F3/22—Component parts
    • 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
    • E02F3/18—Dredgers; Soil-shifting machines mechanically-driven with digging wheels turning round an axis, e.g. bucket-type wheels
    • E02F3/20—Dredgers; Soil-shifting machines mechanically-driven with digging wheels turning round an axis, e.g. bucket-type wheels with tools that only loosen the material, i.e. mill-type wheels
    • E02F3/205—Dredgers; Soil-shifting machines mechanically-driven with digging wheels turning round an axis, e.g. bucket-type wheels with tools that only loosen the material, i.e. mill-type wheels with a pair of digging wheels, e.g. slotting machines

Definitions

  • the present invention relates to a milling tool for cutting hard terrain and sticky terrain.
  • milling tools known as strawberries For the production of trenches in the soil in the form of walls, milling tools known as strawberries are known. They comprise a body suspended at the end of lifting means, this body being provided at its lower end with two wheels driven by hydraulic motors and provided with teeth distributed on two drums with horizontal axes. These teeth have the role of destructuring or cutting the ground to bring it back to small pieces that can be conveyed by suction using a pipe whose cutter is equipped and which is connected to a suction pump .
  • Such a milling or excavating tool is described in particular in the patent European 262,050 in the name of the plaintiff.
  • the cutter is equipped with two wheels that turn in opposite directions, each wheel having two drums.
  • the wheels, as indicated, are rotated by a hydraulic motor or by two hydraulic motors positioned in the central hub of each wheel and arranged at the lower end of the body of the tool.
  • the drums are usually constituted by a ferrule which is mechanically connected to the rotating part of the motor as described in the patent. DE-91-19539249 .
  • the teeth are welded on this ferrule.
  • the tooth is often raised by welding the active part on a sheet whose role is to increase its height.
  • the arrangement of the strawberry teeth may vary.
  • FIG. 1A and 1B Appended a first embodiment of the known milling tool is shown in simplified form.
  • the lower part 10 of the body of the milling tool on which is mounted the hydraulic motor 12, the motor itself driving the drums 16, 18, shaped ferrule, on which are mounted the milling members or referenced peaks 20.
  • the pipe 22 for suction cuttings resulting from the action of the milling members are arranged on each drum in a helix E1. This configuration is favorable in the case where the ground is hard because in their rotation, the milling members 20 sweep the entire width of the trench to achieve.
  • FIG. 2A and 2B there is shown another known embodiment of the milling tool which differs from that described above only by the arrangement of the milling members 20.
  • the milling members are mounted on the drums 16 and 18 according to circles C1, C2 and C3 for each of the drums.
  • This arrangement of the milling members or picks 20 is favorable in the case of soft and sticky grounds since it is possible, as shown in the figures, to provide between the milling members 20 plates such as 21 interposed between the milling member rings 20 and performing a scraper function to extract the sticky material which tends to be fixed on the periphery of the drums and between the milling members 20.
  • the sticky material collected by the scrapers 21 is taken up by the pipe suction 22.
  • the spike 30 comprises a base 32 for mounting on the drum and an active portion 34 equipped with a carbide chip 36.
  • Such a milling spike lends itself well to excavation in relatively sticky terrain since it has slender form, sticky soils having less tendency to stick to the peak milling.
  • these peaks are poorly adapted to excavations in hard terrain because of their relatively limited strength.
  • milling peaks such as the peak 40 represented on the figure 3 .
  • These peaks comprise a substantially cylindrical mounting base 42 and an active portion 44 which is substantially conical.
  • the end of the active portion 44 also ends with a carbide pellet 46.
  • the "blocking" of the sticky ground results in particular from the fact that the milling peaks such as the peaks 40 represented on the figure 3 are mounted on drums which consist of a solid ferrule which surrounds the hydraulic motors and which thus promotes the accumulation of sticky materials around the drums in the form of ferrules between the milling peaks thus significantly reducing the efficiency of the latter.
  • An object of the present invention is therefore to provide a milling tool of the type mentioned above which is suitable both for working in hard ground and working in a sticky ground.
  • the accumulation of sticky ground in the case of work in soil of this nature is avoided or limited because the milling members are mounted on rims which have a length according to the axis of the drive motors reduced with respect to the length of the ferrules constituting the drums in the known milling tools and, secondly, because these rims are mechanically connected by support members or fasteners that spare between the rims and themselves spaces avoiding the accumulation of sticky materials as did the full drums.
  • FIG. 5B there is shown a hydraulic motor 50 fixed on a plate 52 integral with the body of the milling tool.
  • This hydraulic motor has an axis X, X 'and its outer casing has a diameter D3.
  • the output of the motor 50 is constituted by a rotary plate 54 about the axis X, X '.
  • the drum consisting of a ferrule and used for fixing the milling members, used in the known tools, is replaced by the structure which will be described now.
  • the milling members are fixed on a rim 56 which, in this embodiment, has the shape of an ellipse inclined with respect to the axis X, X 'of the engine.
  • This rim has an outer rim 56a of diameter D1 and an inner edge 56b of diameter D2. The difference between diameters D1 and D2 is defined so that the rim has the necessary mechanical strength.
  • the rim 56 has a thickness e in the direction of the axis X, X 'which is less than the length L of the hydraulic motor 50. This thickness e is at most equal to 1/4 th of the length of motor 50.
  • the outer edge 56a is preferably constituted by a succession of faces inclined 58 for fixing the drill members 40, to give them a favorable orientation.
  • the rotation device of the milling members 40 also comprises a fixing hub 60 which is screwed onto the output plate 54 of the hydraulic motor.
  • the hub 60 is connected to the rim 56 by support members in the form of bent arms such as 62 extending in radial directions with respect to the axis XX '. In the example more particularly described, four arms 62 are provided, but this number could be different.
  • the arms 62 have different dimensions to adapt to the fact that the rim 56 has the shape of an ellipse E'1 inclined relative to the axis X, X 'while the hub 60 is orthogonal to this axis X, X '.
  • milling members or peaks 40 are fixed on a rim 56 of reduced thickness e , this thickness being of course adapted to the mechanical strength that this rim must develop.
  • this thickness e is much less than the length L of the hydraulic motor and is therefore much less than the length of the drum carrying the milling members in the solutions of the prior art. It is understood that, even if the material excavated soil is sticky, it will not be retained by the outer edge 56a of the rim and may flow to the engine where it will be taken by the scraper 66 and directed to the tubing suction 22.
  • milling members 40 which are particularly well suited to work in a hard ground.
  • the milling tool according to the invention is therefore well suited both to work in a sticky ground, since the accumulation of sticky material on the milling cutter is avoided and to work in hard ground, since it allows the use of milling members 40 adapted to such a terrain.
  • it also allows the attachment of the milling members on the rim according to an ellipse which thus allows the milling members to cover the entire width of the trench to be produced, while allowing the installation of a scraper between the engine and the rim.
  • FIG. 6A and 6B On the Figures 6A and 6B the whole of the lower part of the milling tool is shown. It includes four strawberries of the type shown on the Figures 5A and 5B . On each side of the plate 52, there are two cutters F1, F2 and F3, F4, each cutter being equipped with a scraper fixed on the plate 52.
  • FIGS. 7A to 7C show three other possible forms of rim and thus three other possible configurations of the bodies or milling spikes.
  • FIG. 7C is schematized by a single line the fastening seals of the milling members on the rim.
  • the rim is constituted by two parts 70 and 72, each rim portion having the shape of an ellipse.
  • the ellipses are parallel to each other and inclined relative to the axis XX 'of the motor which drives them in rotation.
  • the rim portion 70 is connected to the hub 60 by the arms 62, the rim portion 72 being connected to the rim portion 70 by extensions of the arms 62 parallel to the axis XX 'and not shown in the figure.
  • the embodiment of the Figure 7B is different from that of the Figure 7A in that the rim portions 70 'and 72', which are ellipses, are inclined and are symmetrical with respect to a plane orthogonal to the axis XX 'of the motor. As in the embodiment of the Figure 7A the two rim parts 70 'and 72' are interconnected by extensions of the arms 62.
  • the rim 74 is in one piece which has the shape of a helical portion of axis XX '.
  • the rim 74 is mechanically connected to the hub 60 by arms 62, whose dimensions are adapted to the point of the helix 74 where they are connected.

Claims (10)

  1. Fräswerkzeug zum Schneiden von harten Böden und klebrigen Böden, das beinhaltet:
    - einen Körper (10),
    - wenigstens einen Motor (50), der mit dem unteren Ende des Körpers (10) verbunden ist, der eine horizontale Abtriebswelle und ein im wesentlichen zylindrisches Gehäuse mit dem Durchmesser D3 aufweist,
    - eine Vielzahl von Fräselementen (40), die auf einer zylindrischen Fläche angeordnet sind, die als Achse die Antriebswelle des Motors (58) hat; und
    - Mittel zum mechanischen Verbinden zur Übertragung der Rotationsbewegung der Motorwelle auf die Fräselemente (40), umfassend
    - eine Felge (56), die einen äußeren Rand (56a), der auf einem Zylinder mit dem Durchmesser D1 angeordnet ist, auf dem die Fräselemente (40) befestigt sind, einen inneren Rand (56b), der auf einem Zylinder mit dem Durchmesser D2, der deutlich größer ist als der Durchmesser D3 des Motors, angeordnet ist und eine Dicke e, in Richtung der Motorwelle aufweist, die wesentlich kleiner ist als die Länge L des Motors (50),
    - ein Verbindungselement (54, 60), das auf dem Ende der Motorwelle befestigt ist; das Werkzeug ist dadurch gekennzeichnet, dass die Mittel zur mechanischen Verbindung außerdem beinhalten:
    - wenigstens zwei Trägerelemente (62) zum mechanischen Verbinden der Felge (56) mit dem Verbindungselement (54, 60), derart, dass die Felge (56) den Motor (50) umgibt und dass sie bezüglich des Verbindungselements (54, 60) in Richtung der Welle verschoben ist, wodurch ein ringförmiger Raum (64) zwischen der Felge (56) und dem Motor (50) gebildet ist und Vertiefungen (68) zwischen der Felge (56), dem Verbindungselement (54, 60) und den Trägerelementen (62) ausgespart sind, um dem von den Fräselementen (40) abgeschnittenen, klebrigen Material einen Durchgang zu lassen.
  2. Fräswerkzeug nach Anspruch 1, dadurch gekennzeichnet, dass es eine Mehrzahl von Motoren aufweist, wobei jeder Motor mit einer Mehrzahl von Fräselementen und mit Mitteln zur mechanischen Verbindung verbunden ist.
  3. Fräswerkzeug nach einem der Ansprüche 1 und 2, dadurch gekennzeichnet, dass es außerdem wenigstens ein Abschabelement aufweist, das verbunden ist mit dem Körper des Werkzeugs, der zwischen dem Motor und der Felge, die mit diesem verbunden ist, angeordnet ist.
  4. Fräswerkzeug nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass für jede Felge der äußere und innere Rand Ellipsen sind, die in derselben Ebene angeordnet sind, die bezüglich der Motorwelle, mit der sie verbunden ist, geneigt ist.
  5. Fräswerkzeug nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass jede Felge aus zwei Abschnitten besteht, die jeweils einen äußeren Rand, der auf einem Zylinder mit dem Durchmesser D1 angeordnet ist, und einen inneren Rand, der auf einem Zylinder mit dem Durchmesser D2 angeordnet ist, aufweisen; wobei der innere und äußere Rand desselben Felgenabschnitts Ellipsen sind, die in derselben Ebene, die bezüglich der Motorwelle geneigt ist, angeordnet sind.
  6. Fräswerkzeug nach Anspruch 5, dadurch gekennzeichnet, dass die Ebenen, in denen sich die Ränder der beiden Felgenabschnitte befinden, parallel zueinander sind.
  7. Fräswerkzeug nach Anspruch 5, dadurch gekennzeichnet, dass die Ebenen, in denen sich die Ränder der beiden Felgenabschnitte befinden, symmetrisch bezüglich einer orthogonal zur Motorwelle verlaufenden Ebene sind.
  8. Fräswerkzeug nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Ränder der Felge die Form von schraubenlinienförmigen Abschnitten haben.
  9. Fräswerkzeug nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass jedes Fräselement eine im Wesentlichen zylindrische Form aufweist, deren erstes spitz zulaufendes Ende mit einer Schneidescheibe ausgestattet ist, und deren anderes Ende zu seiner Befestigung auf dem äußeren Rand der Felge dient.
  10. Fräswerkzeug nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass es eine Vielzahl von Trägerelementen aufweist, wobei jedes Trägerelement im Wesentlichen die Form eines gebogenen Arms aufweist, der sich in einer radialen Richtung bezüglich der Motorwelle erstreckt.
EP02290094A 2001-01-23 2002-01-15 Fräswerkzeug zum Schneiden von hartem Boden und von klebrigem Boden Expired - Lifetime EP1231327B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0100854A FR2819834B1 (fr) 2001-01-23 2001-01-23 Outil de fraisage pour la coupe de terrains durs et de terrains collants
FR0100854 2001-01-23

Publications (2)

Publication Number Publication Date
EP1231327A1 EP1231327A1 (de) 2002-08-14
EP1231327B1 true EP1231327B1 (de) 2008-03-26

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP02290094A Expired - Lifetime EP1231327B1 (de) 2001-01-23 2002-01-15 Fräswerkzeug zum Schneiden von hartem Boden und von klebrigem Boden

Country Status (8)

Country Link
EP (1) EP1231327B1 (de)
JP (1) JP4087607B2 (de)
AT (1) ATE390523T1 (de)
DE (1) DE60225740T2 (de)
ES (1) ES2304420T3 (de)
FR (1) FR2819834B1 (de)
HK (1) HK1050228B (de)
PT (1) PT1231327E (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2849662B1 (fr) 2003-01-08 2005-11-04 Cie Du Sol Tambour pour fraise utilisable notamment pour la realisation de tranchees verticales dans des sols durs ou tres durs
FR2856088B1 (fr) 2003-06-11 2005-09-09 Cie Du Sol Outil de fraisage pour la realisation de tranchees, permettant un changement rapide de la tete de coupe
FR2904339B1 (fr) * 2006-07-28 2011-03-04 Cie Du Sol Tete de coupe pour une machine d'excavation
FR2904338B1 (fr) * 2006-07-28 2011-03-04 Cie Du Sol Tete de coupe pour machine d'excavation
FR2914331B1 (fr) * 2007-03-28 2009-07-03 Cie Du Sol Soc Civ Ile Tete de coupe pour une machine de decoupe du sol a fraises rotatives
DE502007003525D1 (de) * 2007-08-23 2010-06-02 Bauer Maschinen Gmbh Fräsvorrichtung zur Bodenbearbeitung

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2752142A (en) * 1951-09-25 1956-06-26 Joy Mfg Co Disintegrating head mechanism for a mining apparatus
US3279856A (en) * 1963-11-18 1966-10-18 Westinghouse Air Brake Co Core breaker for ripper type miner
ES420924A1 (es) * 1972-12-14 1976-04-01 Hydrosol Dispositivo de perforacion.
FR2641807B1 (fr) * 1989-01-13 1991-04-05 Soletanche Dispositif de fixation des tambours de fraisage sur un appareil destine a creuser des tranchees dans le sol
DE3926976C2 (de) * 1989-08-16 1995-02-02 Hochtief Ag Hoch Tiefbauten Vorrichtung zum Einbringen eines im wesentlichen vertikalen Bodenschlitzes
JPH0396516A (ja) * 1989-09-07 1991-04-22 Taisei Corp 可変幅掘削機及び拡幅掘削法
JPH0718309B2 (ja) * 1991-09-13 1995-03-01 社団法人日本建設機械化協会 地盤掘削用チェーンカッタの潤滑性付与方法
IT1267930B1 (it) * 1994-10-21 1997-02-18 Casagrande Spa Fresa con supporto a bussola

Also Published As

Publication number Publication date
HK1050228A1 (en) 2003-06-13
EP1231327A1 (de) 2002-08-14
FR2819834B1 (fr) 2003-04-04
FR2819834A1 (fr) 2002-07-26
DE60225740T2 (de) 2009-04-16
PT1231327E (pt) 2008-07-01
JP4087607B2 (ja) 2008-05-21
ES2304420T3 (es) 2008-10-16
ATE390523T1 (de) 2008-04-15
DE60225740D1 (de) 2008-05-08
JP2002256588A (ja) 2002-09-11
HK1050228B (zh) 2008-07-11

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