EP0253726B1 - Vorrichtung zum Ausheben von Gräben mit Fräsern - Google Patents

Vorrichtung zum Ausheben von Gräben mit Fräsern Download PDF

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Publication number
EP0253726B1
EP0253726B1 EP87401642A EP87401642A EP0253726B1 EP 0253726 B1 EP0253726 B1 EP 0253726B1 EP 87401642 A EP87401642 A EP 87401642A EP 87401642 A EP87401642 A EP 87401642A EP 0253726 B1 EP0253726 B1 EP 0253726B1
Authority
EP
European Patent Office
Prior art keywords
drums
machine
core
fact
tools
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
EP87401642A
Other languages
English (en)
French (fr)
Other versions
EP0253726A1 (de
Inventor
Karl Bollinger
Gerardus Evers
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.)
Soletanche SA
Original Assignee
Soletanche SA
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 Soletanche SA filed Critical Soletanche SA
Priority to AT87401642T priority Critical patent/ATE55792T1/de
Publication of EP0253726A1 publication Critical patent/EP0253726A1/de
Application granted granted Critical
Publication of EP0253726B1 publication Critical patent/EP0253726B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • E02F3/18—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 machines which make it possible to dig trenches in the ground at great depths, using cylindrical cutters which are arranged at the bottom of the machine and which are driven in rotation to disintegrate the ground.
  • These machines of known type in particular in document DE-A 2 362 425, generally comprise two identical milling cutters rotating in opposite directions, each consisting of two half-drums supported by a flat core arranged vertically.
  • the cutters can be driven by hydraulic or electric motors located along their axes. They can also be done by mechanical devices such as shafts with gearboxes or chains, using motors which are located above the cutters in the body of the machine.
  • the core must be able to withstand considerable efforts, because it is necessary to apply a significant torque to the strawberries in order to be able to disintegrate soils made up of rocks and there is, moreover, at the strawberries very significant vibrations which are affect the soul.
  • the core must be as strong a piece as possible. It is most often made of cast steel with high mechanical characteristics.
  • This step which is thus brought to support a part of the weight of the machine normally breaks by buckling and this all the more easily as the core has a thinner thickness.
  • the present invention provides a particularly simple and effective solution to this problem.
  • the present invention relates to a machine for digging trenches of great depth, with vertical walls in the ground using cutters, of the type in which two half-drums carrying milling tools are supported by a flat core disposed vertically , characterized in that the axes of the two half-drums are slightly inclined downward away from the plane of the core.
  • the axes of the half-drums can be inclined, for example from 1 to 10 degrees relative to the horizontal.
  • the tools which are located on the half-drums in the vicinity of the core can work on the lower part of the machine, in the immediate vicinity of one another, eliminating the step or by leaving only a step whose thickness is sufficiently small so that its rupture under the action of the lower part of the core does not raise any difficulties.
  • the tools arranged at the external periphery of the half-drums are offset towards the outside so that, when these tools are in the lower part of the half-drums, they break up the ground over a width which corresponds substantially to the width occupied at their upper part by the two half-drums.
  • the ends of the milling tools arranged on each half-drum are located on a truncated cone whose generatrices have the same inclination as that of the axes of the half-drums, so that the vertices of these tools are located on a substantially horizontal line when they are at the bottom of the drums.
  • the core can be produced with a vertical trapezoidal section which makes it possible to give it the mechanical solidity which is necessary for the transmission of very large forces to the half-drums.
  • the two half-drums can be driven using a motor whose casing is made integral with the core and which is provided with a hollow grooved axis inside which engages a splined shaft which rotates each of the half-drums, for example also by means of splines.
  • FIG. 1 There is diagrammatically shown in FIG. 1 the lower part of the body 1 of the machine as well as the two drums 2 which are constituted by half-drums secured on either side of the flat webs 3.
  • the outline of the tools 4 placed on the drums 2 has also been represented schematically by dashed lines.
  • the drums 2 rotate in opposite directions, as indicated by the arrows, so as to bring between them the debris torn from the ground which are eliminated by the suction nozzle 5 of a pump not shown.
  • Figure 2 shows a section along II-II of an embodiment of the invention, the core 3 which has a trapezoidal section and which is therefore much thicker at its upper part than its lower part.
  • the core 3 is provided with the plate 6 which allows it to be securely fastened to the lower part of the body of the machine.
  • the half-drums 2a and 2b which are rotated about the axes 7 which are inclined downward from the core relative to the horizontal line 8 perpendicular to the median plane of the core .
  • the axes of the half-drums are inclined from 1 to 10 degrees, the diameter of the cutter being, for example, from 120 to 160 cm.
  • the half-drums 2a and 2b are provided at their periphery with conventional tools 4, 4a and 4b.
  • the tools 4b which are located on the external periphery of the half-drums 2a and 2b, are offset towards the outside up to a vertical line 9, so as to be at their lower part substantially in line with the external edges of the upper part of the half-drums 2a.
  • the tools 4, 4a and 4b dig in the lower part of the machine a trench which corresponds to the maximum width of the drum which, taking into account the inclination of the axes 7, corresponds to that of the upper part half-drums 2a and 2b.
  • the inclination towards one another of the tools 4a of the two half-drums makes it possible to practically eliminate the formation of a step at the lower part of the core 3 which nevertheless retains a significant thickness at its part. greater than the vicinity of the plate 6 by which it is subject to the body of the machine 1.
  • the tools 4, 4a and 4b are substantially aligned in a horizontal line so as to ensure a regular size of the trench.
  • the half-drums 2 9 and 2b can be rotated in any way.
  • They can for example be driven using two hydraulic motors powered by pipes arranged in the thickness of the core, motors which are coaxial with the half-drums.
  • a single motor with a horizontal axis, arranged symmetrically with respect to the core 3 and the axis of which can be connected to the inclined axes of the two half-drums by articulated devices of any type.
  • a motor comprising a hollow grooved axis which is connected by one or two grooved shafts to the two half-drums, the play existing at the level of the grooves making it possible to ensure angular catching up between the axes half-drums and that of the engine.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Soil Working Implements (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Crushing And Grinding (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
  • Bulkheads Adapted To Foundation Construction (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Mechanical Treatment Of Semiconductor (AREA)
  • Photoreceptors In Electrophotography (AREA)

Claims (8)

1. Gerät zum Ausheben von tiefen Gräben mit senkrechten Seitenwänden, umfassend mindestens eine Fräse aus zwei Halbtrommeln (2a, 2b), die an ihrem Umfang jeweils Werkzeuge (4, 4a, 4b) aufweisen und an einem zwischen sich angeordneten senkrechten Steg (3) gelagert sind, dadurch gekennzeichnet, daß die Achsen (7) der beiden Halbtrommeln (2a, 2b) von der Ebene des Steges (3) weg leicht nach unten geneigt sind.
2. Gerät nach Anspruch 1, dadurch gekennzeichnet, daß die Achsen (7) der Halbtrommeln um etwa 1 bis 10° geneigt sind.
3. Gerät nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die in der Nähe des Steges (3) an den Halbtrommeln (2a, 2b) liegenden Werkzeuge (4a) unmittelbar nebeneinander arbeiten, wenn sie sich im unteren Bereich des Gerätes befinden.
4. Gerät nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, daß die am Außenumfang der Halbtrommein (2a, 2b) angebrachten Werkzeuge (4b) derart nach außen verlagert sind, daß sie dann, wenn sie sich im unteren Bereich des Geräts befinden, den Boden in einer Breite fräsen, die im wesentlichen der im oberen Bereich von den Halbtrommeln eingenommenen Breite entspricht.
5. Gerät nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, daß die Enden der an jeder Halbtrommel (2a, 2b) angebrachten Fräswerkzeuge (4, 4a, 4b) auf einem Kegelstumpf liegen, dessen Erzeugende dieselbe Neigung hat wie die Achsen (7) der Halbtrommeln, so daß die Spitzen dieser Werkzeuge in einer im wesentlichen horizontalen Ebene liegen, wenn sie sich im unteren Bereich der Trommeln befinden.
6. Gerät nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, daß der Steg einen trapezförmigen senkrechten Querschnitt hat.
7. Gerät nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, daß die beiden Halbtrommeln von einem mit dem Steg fest verbundenen Motor angetrieben werden, der mit einer horizontalen gerillten Hohlwelle versehen ist, wobei in das Innere der Hohlwelle eine Keilwelle eingreift, die jede der Halbtrommeln in Drehung mitnimmt, und wobei der Winkelabstand zwischen der Achse des Motors und der der Halbtrommeln durch das zwischen den Rillen bestehende Spiel ausgeglichen ist.
8. Gerät nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, daß der Steg (3) zwei Paar Halbtrommeln trägt, deren Achsen im wesentlichen auf derselben Höhe liegen und die gegensinnig angetrieben sind.
EP87401642A 1986-07-15 1987-07-10 Vorrichtung zum Ausheben von Gräben mit Fräsern Expired - Lifetime EP0253726B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87401642T ATE55792T1 (de) 1986-07-15 1987-07-10 Vorrichtung zum ausheben von graeben mit fraesern.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8610287A FR2601708B1 (fr) 1986-07-15 1986-07-15 Engin pour creuser des tranchees dans le sol a l'aide de fraises
FR8610287 1986-07-15

Publications (2)

Publication Number Publication Date
EP0253726A1 EP0253726A1 (de) 1988-01-20
EP0253726B1 true EP0253726B1 (de) 1990-08-22

Family

ID=9337436

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87401642A Expired - Lifetime EP0253726B1 (de) 1986-07-15 1987-07-10 Vorrichtung zum Ausheben von Gräben mit Fräsern

Country Status (8)

Country Link
EP (1) EP0253726B1 (de)
JP (1) JPS6322929A (de)
AT (1) ATE55792T1 (de)
CY (1) CY1698A (de)
DE (2) DE253726T1 (de)
FR (1) FR2601708B1 (de)
HK (1) HK76593A (de)
SG (1) SG18793G (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3715977A1 (de) * 1987-05-13 1988-12-01 Bauer Spezialtiefbau Raeumvorrichtung
FR2752857B1 (fr) * 1996-08-28 1998-12-04 Sol Comp Du Appareil pour creuser dans le sol des tranchees de grande profondeur
DE19754399C2 (de) * 1997-12-09 2002-04-25 Juergen Posch Vorrichtung zur Bearbeitung einer länglichen Vertiefung im Erdreich
DE29808307U1 (de) 1998-05-11 1998-08-20 Möbius, Andreas, Prof. Dr.rer.nat., 41472 Neuss Vorrichtung zum gerichteten Einblasen von Luft, anderen Gasen oder Dämpfen unter gleichzeitiger Flüssigkeitsumwälzung
EP1350893B1 (de) * 2002-04-05 2005-09-28 Spie Fondations Fräsrad und Schlitzwandfräse umfassend mindestens zwei Fräsräder
FR3071535B1 (fr) 2017-09-25 2019-09-27 Soletanche Freyssinet Machine de forage pour la realisation d'une tranchee non rectiligne
EP3556942B1 (de) * 2018-04-18 2020-04-29 BAUER Maschinen GmbH Schlitzwandfräse und verfahren zum erstellen eines frässchlitzes im boden

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE960392C (de) * 1954-02-27 1957-03-21 Erwin Baas Vorrichtung zur Herstellung neuer bzw. zum Reinigen bestehender Graeben
FR1429215A (fr) * 1965-04-09 1966-02-18 Socomec Sa Machine à creuser des tranchées, à lames tournantes s'enfonçant dans le terrain, particulièrement pour l'agriculture
DE1634262B1 (de) * 1966-04-09 1970-09-24 Bade & Co Gmbh Fraeswerkzeug zum Herstellen von Schlitzen fuer Schlitzwaende
US3510970A (en) * 1967-03-02 1970-05-12 Pavel Mikhailovich Mikhailov Excavator with inclined bucket wheels attached to a working unit which is horizontally maintained
ES420924A1 (es) * 1972-12-14 1976-04-01 Hydrosol Dispositivo de perforacion.
JPS586931U (ja) * 1981-07-04 1983-01-17 株式会社ボッシュオートモーティブ　システム 大気圧補正装置付の内燃機関用遠心力調速機のアネコンレバ−

Also Published As

Publication number Publication date
ATE55792T1 (de) 1990-09-15
CY1698A (en) 1994-01-14
FR2601708B1 (fr) 1989-10-27
JPS6322929A (ja) 1988-01-30
FR2601708A1 (fr) 1988-01-22
SG18793G (en) 1993-04-16
EP0253726A1 (de) 1988-01-20
HK76593A (en) 1993-08-06
DE253726T1 (de) 1988-09-01
DE3764423D1 (de) 1990-09-27

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