EP2417304B1 - Bodenaushubmaschine als fräse mit beweglichem wagen - Google Patents

Bodenaushubmaschine als fräse mit beweglichem wagen Download PDF

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Publication number
EP2417304B1
EP2417304B1 EP10723203.5A EP10723203A EP2417304B1 EP 2417304 B1 EP2417304 B1 EP 2417304B1 EP 10723203 A EP10723203 A EP 10723203A EP 2417304 B1 EP2417304 B1 EP 2417304B1
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EP
European Patent Office
Prior art keywords
bar
excavation machine
soil
cutter type
cutting 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.)
Active
Application number
EP10723203.5A
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English (en)
French (fr)
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EP2417304A1 (de
Inventor
Philippe Chagnot
Laurent Pivert
Régis Bernasinski
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 Freyssinet SA
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Soletanche Freyssinet SA
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Application filed by Soletanche Freyssinet SA filed Critical Soletanche Freyssinet SA
Publication of EP2417304A1 publication Critical patent/EP2417304A1/de
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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
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00—Excavations; Bordering of excavations; Making embankments
    • E02D17/13—Foundation slots or slits; Implements for making these slots or slits

Definitions

  • the present invention relates to the technical field of straw-type soil excavating machines for producing rectangular panels.
  • These machines are used for excavating trenches in the ground, especially for the purpose of producing molded walls consisting of a plurality of rectangular panels.
  • the invention therefore does not relate to machines having mixing tools for performing soil-mixing operations.
  • the frame 12 comprises a frame 12 suspended at the end of lifting means 14, this frame being provided at its lower end 12a with two wheels 16 driven in rotation by hydraulic motors.
  • the wheels 16 comprise drums with horizontal axes provided with cutting teeth 18 distributed on their peripheries.
  • teeth 18 have the role of excavating the ground 20 to transform it into small pieces, debris, which can then be transported by suction using a pipe 22 connected to a suction pump 24 placed at the inside the chassis 12.
  • the chassis descends vertically, driven by its own weight, while remaining suspended from the lifting means.
  • the frame must also have transverse dimensions close to those of the forming trench to be guided longitudinally by the latter during the excavation operation.
  • the chassis is a very bulky and very heavy because it weighs several tens of tons. This piece is therefore expensive and inconvenient to transport. However, it is necessary because its mass is a ballast that generates a bearing force on the cutting teeth.
  • Such a machine is also described in EP 0 553 378 . It has a variable length bar which requires a mounting complex power supply lines of the engines. In addition, it has a particularly bulky chassis.
  • An object of the invention is to provide a compact milling type excavating machine and overcoming the aforementioned drawbacks.
  • This bar is in the form of a beam that can be full or hollow.
  • the length of the bar is very large compared to its two other dimensions.
  • the bar is preferably made up of several portions of bar that is put end to end before the use of the machine.
  • the bar therefore has a much smaller footprint than the chassis of the prior art, thanks to which it is easy to disassemble and transport the constituent elements of the excavating machine. Nevertheless, when using the machine according to the invention, the length of the longitudinal bar is fixed, that is to say that you do not add or remove bar portions to change its length.
  • the bar having a substantially lower mass than the chassis of the prior art, does not have a mass sufficient to exert the bearing force on the milling tools.
  • the thrust force on the milling tools is essentially achieved by moving the carriage along the mast.
  • the force exerted by the carriage on the bar advantageously replaces the weight of the chassis of the prior art.
  • the carriage can slide along the mast being moved by otherwise known driving members, for example by means of a cable connected to a drive motor disposed on the carrier vehicle.
  • Another advantage of the invention is that it is possible to precisely modulate the thrust force exerted on the bar by the carriage.
  • the excavating machine comprises at least one discharge pipe connected to the pumping means, this discharge pipe for the evacuation of excavated debris.
  • the discharge pipe comprises a first portion connecting the pumping means to the upper end of the bar, a second portion connecting the upper end of the bar to a connection box fixed to the mast, and a third portion connected to the connection box, thanks to which it is possible to do without a winder.
  • the carrier vehicle that is to say the vehicle carrying the means for suspending the frame
  • the carrier vehicle is generally equipped with a winder dedicated to the winding of the discharge pipe. It is therefore understood that another advantage of the invention is to be able to use a conventional carrier vehicle that is usually found on the market, which reduces the cost of the machine and its use.
  • the discharge pipe is housed at least partly inside the bar.
  • the hydraulic hydraulic supply lines of the pumping means are also housed at least partly inside the bar.
  • the pumping means comprise two pumps disposed on either side of the bar, above the milling tools, these pumps being preferentially but not necessarily removable.
  • the thickness of each of the milling tools is between 400 and 600 mm.
  • Such a thickness is generally considered to be a small thickness.
  • the transverse size of the milling tools is substantially greater than the width of the bar .
  • the invention also relates to a method of excavating a wall in a soil using a milling type excavation machine according to the invention, in which process, during the excavation of the wall, the carriage exerts a descending vertical pushing force on the bar.
  • This thrust force the intensity of which is preferably between 15 and 50 tons, makes it possible, as already stated, to exert a sufficient bearing force on the milling tools, and thus to do without a ballast as the chassis of the prior art.
  • the invention relates to the use of the excavating machine according to the invention, in order to form a molded wall, known per se, in a soil.
  • the excavating machine 100 first comprises a carrier 102, preferably a tracked vehicle, for its movement.
  • the excavation machine further comprises a mast 104 having a longitudinal direction D1 which extends here in a substantially vertical direction.
  • this mast may be slightly inclined relative to a vertical direction.
  • the mast 104 is fixed to the carrier 102 by holding means 106 which furthermore make it possible to modify the inclination of the mast, for example in order to adapt the excavation to the soil structure.
  • This pole has a lower end 104a and upper end 104b, the lower end 104b is disposed a few meters above the ground surface S.
  • the excavating machine 100 further comprises a longitudinal bar 108, having the structure of a beam of fixed length, which extends in a longitudinal direction D2, between a lower end 108a and an upper end 108b.
  • the bar 108 carries at its lower end 108a two rotary milling tools 110, 112. These two tools extend along two parallel axes A1 , A2 and distinct. As we see on the figure 2 , These two axes A1, A2 are perpendicular to the longitudinal direction D2 of the rod 108 and also orthogonal to the trench that is desired. In this example, the two axes A1 A2 are contained in the same plane which is substantially parallel to the surface of the ground S. In addition, the longitudinal direction D2 of the bar 108 is substantially parallel to the longitudinal direction D1 of the mast 104.
  • each milling tool 110, 112 comprises two coaxial cylindrical drums 110a, 110b, 112a, 112b which extend symmetrically on either side of the lower end 108a of the bar 108, and which have outer peripheral surfaces of where radially extending cutting teeth (not shown here).
  • each of the milling tools is of the order of 500 mm, whereby the invention makes it possible in particular to make trenches of small thickness.
  • the milling tools 110, 112 are rotated by two hydraulic motors 150 which are housed inside the drums 110a, 110b, 112a, 112b, these motors being fixed to the lower end 108a of the bar. 108 by means of support plates 113.
  • motors 150 which are housed inside the drums 110a, 110b, 112a, 112b, these motors being fixed to the lower end 108a of the bar. 108 by means of support plates 113.
  • FIG. EP 0 262 050 it will be possible to use the motorization technology disclosed in FIG. EP 0 262 050 .
  • drums of each of the milling tools are symmetrical with respect to a plane of symmetry orthogonal to the axes of rotation of the milling tools.
  • the axes of rotation A1 and A2 are fixed relative to each other so that the excavated trench has a rectangular geometry.
  • the bar 108 is moved in the longitudinal direction D1 of the mast 104.
  • the excavating machine 100 further includes a carriage 114 which is slidably mounted along the mast, as its longitudinal direction D1. Displacement means (not shown here) make it possible to move the carriage 114 along the mast 104 towards one or the other of its ends.
  • This carriage 114 is fixed to the bar 108 by holding means 116 disposed on the carriage which may optionally be uncoupled from the bar during maintenance or dismantling of the machine.
  • the holding means 116 are secured to the bar 108.
  • the lower end 104a of the mast comprises translation guide means 118 of the bar 108.
  • these guide means grip the bar so that the latter is free to slide through said guide means.
  • FIG 3 There is illustrated the excavating machine 100 according to the invention during an excavating operation.
  • the milling tools 110, 112 being rotated, the carriage 114 is moved towards the lower end 104a of the mast 104 while exerting a downward thrust force F on the bar 108, and thus on the cutting teeth.
  • the intensity of this thrust force F is of the order of 30 tons, so as to excavate the ground S.
  • the excavating machine 100 further comprises pumping means 120 disposed at the lower end 108a of the bar 108, these pumping means being intended to suck the soil debris excavated by the milling tools 110, 112.
  • These pumping means 120 comprise in this case two pumps 122,124, preferably centrifugal type with hydraulic drive, which are arranged on either side of the lower end 108a of the bar 108, above the milling tools 110,112, between two planes orthogonal to the A1 axes , A2 milling tools and passing through the axial ends of the milling tools.
  • two pumps 122,124 preferably centrifugal type with hydraulic drive, which are arranged on either side of the lower end 108a of the bar 108, above the milling tools 110,112, between two planes orthogonal to the A1 axes , A2 milling tools and passing through the axial ends of the milling tools.
  • These pumps are here housed in two boxes 126,128 whose thickness, considered in a direction parallel to the axes of the milling tools, is less than the thickness of each of the milling tools, as a result of which, the pumps 122,124, and especially their caissons, do not interfere with the milling tools during the excavation operation.
  • Each of the pumps 122, 124 is provided with a suction nozzle 130 through which soil debris enters.
  • the pumps 122,124 are connected to the lower end 132a of a discharge pipe 132.
  • the discharge pipe 132 is essentially housed inside the bar 108 whose interior is hollow. More specifically, the discharge pipe has a first portion 132 ' extending in the longitudinal direction D2 of the bar between its lower end 108a and its upper end 108b, the discharge pipe 132 coming out of the bar 108 by its upper end. 108b.
  • the pipe is then connected to a connection box (not represented here) by a second pipe portion 132 " , this connection box being fixed to the mast 104.
  • the third pipe portion 132"' is fixed to the connection box and ends with an outlet mouth that leads to a storage location and / or debris treatment.
  • hydraulic motors 150 for driving the rotary milling tools, as well as the hydraulically actuated pumps 122, 124 are supplied with hydraulic energy by hydraulic lines 160 which extend in the bar alongside the (or) 132.
  • hydraulic lines 160 follow essentially the same path as the discharge line 132.
  • the hydraulic lines are connected to a hydraulic source disposed on or near the carrier 102.
  • hydraulic channels for feeding the two hydraulic motors arranged in the pairs of drums 110a, 110b, 112a, 112b are preferentially formed inside the support plates 113, like the device of EP 0 262 050 .

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Paleontology (AREA)
  • Mechanical Engineering (AREA)
  • Earth Drilling (AREA)

Claims (13)

  1. Bodenaushubmaschine vom Typ Fräse (100) zum Herstellen von rechteckigen Platten, dadurch gekennzeichnet, dass sie umfasst:
    - einen Mast (104) mit einer Längsrichtung (D1),
    - einen Längsbalken (108) mit fester Länge, der ein unteres Ende (108a) aufweist, das mit zwei Fräswerkzeugen (110, 112) mit parallelen und voneinander unabhängigen Achsen (A1, A2) ausgestattet ist, wobei die Achsen zueinander fest sind und die beiden rotierenden Fräswerkzeuge sich auf beiden Seiten des unteren Endes des Balkens erstrecken,
    - hydraulische Motormittel (150) zum Antreiben der rotierenden Fräswerkzeuge (110, 112), wobei die hydraulischen Motormittel durch hydraulische Rohrleitungen versorgt werden, die zumindest teilweise innerhalb des Längsbalkens (108) untergebracht sind,
    - einen Schlitten (114), der in der Längsrichtung (D1) des Mastes gleitet, wobei der Schlitten dazu bestimmt ist, auf den Balken in der Längsrichtung des Mastes eine nach unten gerichtete Druckkraft (F) auszuüben, und
    - Pumpmittel (122, 124), die am unteren Ende des Balkens angeordnet und dazu bestimmt sind, die von den Fräswerkzeugen ausgehobenen Erdmassen aufzusaugen.
  2. Bodenaushubmaschine vom Typ Fräse (100) gemäß Anspruch 1, dadurch gekennzeichnet, dass sie ferner mindestens eine mit den Pumpmitteln verbundene Auslassleitung (132) umfasst.
  3. Bodenaushubmaschine vom Typ Fräse (100) gemäß Anspruch 2, dadurch gekennzeichnet, dass die mindestens eine Auslassleitung (132) einen ersten Abschnitt (132'), der die Pumpmittel mit dem oberen Ende des Balkens verbindet, einen zweiten Abschnitt (132"), der das obere Ende des Balkens mit einem am Mast befestigten Verbindungsgehäuse verbindet, und einen dritten Abschnitt (132'"), der mit dem Verbindungsgehäuse (136) verbunden ist, umfasst.
  4. Bodenaushubmaschine vom Typ Fräse (100) gemäß Anspruch 2 oder 3, dadurch gekennzeichnet, dass die Auslassleitung (132) zumindest teilweise in dem Balken (108) untergebracht ist.
  5. Bodenaushubmaschine vom Typ Fräse (100) gemäß einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Pumpmittel zwei Pumpen (122, 124) umfassen, die auf beiden Seiten des unteren Endes des Balkens oberhalb der Fräswerkzeuge angeordnet sind.
  6. Bodenaushubmaschine vom Typ Fräse (100) gemäß einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Dicke jedes der Fräswerkzeuge (110, 112), in einer Richtung parallel zu ihren Achsen gesehen, zwischen 400 und 600 mm liegt.
  7. Bodenaushubmaschine vom Typ Fräse (100) gemäß einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass, in einer Richtung orthogonal zur Längsrichtung des Balkens und zu einer zu den Achsen der Fräswerkzeuge parallelen Richtung gesehen, der Platzbedarf der Fräswerkzeuge (122, 124) wesentlich größer ist als die Breite des Balkens.
  8. Bodenaushubmaschine vom Typ Fräse (100) gemäß einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass die Pumpmittel (122, 124) demontierbar sind.
  9. Bodenaushubmaschine vom Typ Fräse (100) gemäß einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass das untere Ende (104a) des Mastes Führungsmittel in Translationsrichtung (118) des Balkens (108) aufweist.
  10. Bodenaushubmaschine vom Typ Fräse (100) gemäß einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass die Fräswerkzeuge (110, 112) Drehtrommeln (110a, 110b, 112a, 112b) umfassen, in denen die hydraulischen Motormittel (150) untergebracht sind.
  11. Verfahren zum Ausheben einer Wand in einem Boden (S) unter Verwendung einer Aushubmaschine vom Typ Fräse (100) gemäß einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, dass der Schlitten (114) während des Aushubs der Wand eine nach unten wirkende Druckkraft (F) auf den Balken (108) ausübt.
  12. Bodenaushubverfahren gemäß Anspruch 11, wobei die Intensität der Druckkraft (F) zwischen 15 und 50 Tonnen liegt.
  13. Verwendung der Aushubmaschine (100) gemäß einem der Ansprüche 1 bis 10 zur Bildung einer rechteckigen Platte in einem Boden.
EP10723203.5A 2009-04-10 2010-04-06 Bodenaushubmaschine als fräse mit beweglichem wagen Active EP2417304B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0952407A FR2944299B1 (fr) 2009-04-10 2009-04-10 Machine d'excavation de sol du type fraise munie d'un chariot mobile
PCT/FR2010/050652 WO2010116081A1 (fr) 2009-04-10 2010-04-06 Machine d'excavation de sol du type fraise munie d'un chariot mobile.

Publications (2)

Publication Number Publication Date
EP2417304A1 EP2417304A1 (de) 2012-02-15
EP2417304B1 true EP2417304B1 (de) 2018-06-06

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FR (1) FR2944299B1 (de)
WO (1) WO2010116081A1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017112418A1 (de) * 2017-06-06 2018-12-06 Liebherr-Werk Nenzing Gmbh Arbeitsmaschine mit einem Anbaugerät, insbesondere einer Schlitzwandfräse, sowie Anbaugerät, insbesondere Schlitzwandfräse

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1634262B1 (de) 1966-04-09 1970-09-24 Bade & Co Gmbh Fraeswerkzeug zum Herstellen von Schlitzen fuer Schlitzwaende
US3848685A (en) 1971-12-31 1974-11-19 Takenaka Komuten Co Mud removing system by means of an excavator and an apparatus therefor
EP0262050A1 (de) 1986-09-26 1988-03-30 SOLETANCHE Société Anonyme dite: Fräsvorrichtung für Erdbewegungsmaschine zum Ausheben von Gräben im Boden
EP0553378A1 (de) 1992-01-30 1993-08-04 Hochtief Aktiengesellschaft Vorm. Gebr. Helfmann Vorrichtung zum Einbringen eines Bodenschlitzes im Zuge der Herstellung einer Dicht- oder Stützwand
JPH08302670A (ja) 1995-05-01 1996-11-19 Takenaka Komuten Co Ltd 大深度対応の地盤改良工法及び水平カッター式地盤改良装置
US20040037652A1 (en) 2002-08-21 2004-02-26 Ludwig Schmidmaier Boring appliance
US20040234345A1 (en) 2003-02-27 2004-11-25 Maximilian Arzberger Method for making a trench wall in the ground, trench wall cutter and trench wall cutting device
EP1626127A1 (de) 2004-08-10 2006-02-15 BAUER Maschinen GmbH Fräsvorrichtung und Verfahren zum Erstellen eines Fräslochs
EP1630297A1 (de) 2004-08-20 2006-03-01 BAUER Maschinen GmbH Verfahren zum Herstellen einer Schlitzwand im Boden und einer Schlitzwandfräsvorrichtung
EP1746213A1 (de) 2005-07-21 2007-01-24 Compagnie du Sol Vorrichtung zur Herstellung einer Schlitzwand aus einer Mischung von Boden und Bindemittel

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1580398B1 (de) * 2004-03-23 2012-01-18 BAUER Maschinen GmbH Verfahren und Vorrichtung zum Tiefbau
DE502004004815D1 (de) * 2004-09-01 2007-10-11 Bauer Maschinen Gmbh Schlitzwand im Boden und Verfahren zu deren Herstellung

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1634262B1 (de) 1966-04-09 1970-09-24 Bade & Co Gmbh Fraeswerkzeug zum Herstellen von Schlitzen fuer Schlitzwaende
US3848685A (en) 1971-12-31 1974-11-19 Takenaka Komuten Co Mud removing system by means of an excavator and an apparatus therefor
EP0262050A1 (de) 1986-09-26 1988-03-30 SOLETANCHE Société Anonyme dite: Fräsvorrichtung für Erdbewegungsmaschine zum Ausheben von Gräben im Boden
EP0553378A1 (de) 1992-01-30 1993-08-04 Hochtief Aktiengesellschaft Vorm. Gebr. Helfmann Vorrichtung zum Einbringen eines Bodenschlitzes im Zuge der Herstellung einer Dicht- oder Stützwand
JPH08302670A (ja) 1995-05-01 1996-11-19 Takenaka Komuten Co Ltd 大深度対応の地盤改良工法及び水平カッター式地盤改良装置
US20040037652A1 (en) 2002-08-21 2004-02-26 Ludwig Schmidmaier Boring appliance
US20040234345A1 (en) 2003-02-27 2004-11-25 Maximilian Arzberger Method for making a trench wall in the ground, trench wall cutter and trench wall cutting device
EP1626127A1 (de) 2004-08-10 2006-02-15 BAUER Maschinen GmbH Fräsvorrichtung und Verfahren zum Erstellen eines Fräslochs
EP1630297A1 (de) 2004-08-20 2006-03-01 BAUER Maschinen GmbH Verfahren zum Herstellen einer Schlitzwand im Boden und einer Schlitzwandfräsvorrichtung
EP1746213A1 (de) 2005-07-21 2007-01-24 Compagnie du Sol Vorrichtung zur Herstellung einer Schlitzwand aus einer Mischung von Boden und Bindemittel

Also Published As

Publication number Publication date
FR2944299A1 (fr) 2010-10-15
WO2010116081A1 (fr) 2010-10-14
EP2417304A1 (de) 2012-02-15
FR2944299B1 (fr) 2016-08-26

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