EP2417304A1 - Machine d'excavation de sol du type fraise munie d'un chariot mobile - Google Patents
Machine d'excavation de sol du type fraise munie d'un chariot mobileInfo
- Publication number
- EP2417304A1 EP2417304A1 EP10723203A EP10723203A EP2417304A1 EP 2417304 A1 EP2417304 A1 EP 2417304A1 EP 10723203 A EP10723203 A EP 10723203A EP 10723203 A EP10723203 A EP 10723203A EP 2417304 A1 EP2417304 A1 EP 2417304A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- bar
- milling tools
- milling
- mast
- excavating machine
- 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
Links
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.
- FIG 1 there is shown a milling type milling machine 10, as known today. It 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. These 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 trench in formation in order to be guided longitudinally by the latter during the excavation operation.
- the frame is therefore a very bulky and very heavy piece since it weighs several tens of tons. This piece is therefore expensive and inconvenient to transport.
- it is necessary because its mass constitutes a ballast which makes it possible to generate a bearing force on the cooper teeth.
- Such a machine is also described in EP 0 553 378. It comprises a bar of variable length which requires assembly. 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.
- the invention achieves its goal by the fact that it comprises;
- a longitudinal bar of fixed length which has a lower end provided with two milling tools of parallel and distinct axes, said axes being fixed with respect to each other, the two rotary milling tools extending from each other; and else from the bottom end of the bar,
- Hydraulic motor means for driving the rotary milling tools, said hydraulic motor means being fed by hydraulic lines which are housed at least partly inside the longitudinal bar,
- 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 using 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 attached 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.
- 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 preferably 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.
- 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.
- FIG. 1 shows a milling type of excavation machine of the prior art
- FIG. 2 represents a milling type excavation machine according to the present invention
- FIG. 3 illustrates the excavation method implemented by the machine of FIG. 2; and FIG. 4 is a detailed view of the lower end of the bar of the machine of FIG. 2, this lower end carrying milling tools as well as pumping means.
- FIGS. 2 to 4 a preferred embodiment of a milling machine 100 of the milling cutter type for producing rectangular panels according to the present invention will be described.
- 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.
- 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 axes Al, A2 parallel and distinct.
- these two axes A1, A2 are perpendicular to the longitudinal direction D2 of the bar 108 and also orthogonal to the trench that is desired to achieve.
- the two axes A1, A2 are contained in the same plane which is substantially parallel to the surface of the ground S.
- 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.
- 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 excavating machine 100 also comprises a carriage 114 which is slidably mounted along the mast in 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 excavation 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 be able 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 axes A1, 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.
- the milling tools 110, 112 between two planes orthogonal to the axes A1, 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 which leads to a storage location and / or debris treatment.
- the hydraulic motors 150 intended to drive the rotary milling tools, as well as the hydraulically actuated pumps 122, 124 are supplied with hydraulic power by hydraulic lines 160 which extend in the bar alongside the (or) 132.
- the 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 1103, 110b, 112a, 112b are preferentially formed inside the support plates 113, like the device of EP 0 262 050.
Landscapes
- 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)
Abstract
Description
Claims
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 true EP2417304A1 (fr) | 2012-02-15 |
| EP2417304B1 EP2417304B1 (fr) | 2018-06-06 |
Family
ID=41313931
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP10723203.5A Active EP2417304B1 (fr) | 2009-04-10 | 2010-04-06 | Machine d'excavation de sol du type fraise munie d'un chariot mobile |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP2417304B1 (fr) |
| FR (1) | FR2944299B1 (fr) |
| WO (1) | WO2010116081A1 (fr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102017112418B4 (de) * | 2017-06-06 | 2025-03-20 | Liebherr-Werk Nenzing Gmbh | Arbeitsmaschine mit einem Anbaugerät, insbesondere einer Schlitzwandfräse, sowie Anbaugerät, insbesondere Schlitzwandfräse |
Family Cites Families (12)
| 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 |
| DE2256054C2 (de) | 1971-12-31 | 1984-08-16 | Takenaka Komuten Co. Ltd., Osaka | Abraum-Saugbaggereinrichtung mit wenigstens einem Saugschlauch zum Abführen des Abraumschlammes |
| FR2604460B1 (fr) | 1986-09-26 | 1991-05-10 | Soletanche | Dispositif pour engin destine a creuser des tranchees dans le sol par fraisage |
| EP0553378B1 (fr) * | 1992-01-30 | 1996-01-03 | Hochtief Aktiengesellschaft Vorm. Gebr. Helfmann | Dispositif pour former une tranchée dans le sol pendant la construction d'un mur de soutien ou d'étanchéité |
| JP3704666B2 (ja) | 1995-05-01 | 2005-10-12 | 株式会社竹中工務店 | 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 |
| DE10238193B4 (de) * | 2002-08-21 | 2004-08-19 | Bauer Spezialtiefbau Gmbh | Bohrvorrichtung |
| DE10308538C5 (de) * | 2003-02-27 | 2014-11-06 | Bauer Maschinen Gmbh | Verfahren zum Herstellen einer Schlitzwand im Boden, Schlitzwandfräse und Schlitzwandfräsvorrichtung |
| EP1580398B1 (fr) * | 2004-03-23 | 2012-01-18 | BAUER Maschinen GmbH | Appareil et méthode pour constructions souterraines |
| DE502004005270D1 (de) * | 2004-08-10 | 2007-11-29 | Bauer Maschinen Gmbh | Fräsvorrichtung und Verfahren zum Erstellen eines Fräslochs |
| EP1630297A1 (fr) * | 2004-08-20 | 2006-03-01 | BAUER Maschinen GmbH | Procedée et appareil d'excavation à benne preneuse |
| EP1632609B1 (fr) * | 2004-09-01 | 2007-08-29 | BAUER Maschinen GmbH | Procédée de faire un rideau souterrain |
| FR2888859B1 (fr) * | 2005-07-21 | 2007-10-19 | Cie Du Sol Soc Civ Ile | Installation de realisation de paroi enterree par melange du sol avec un liant et procede de correction de trajectoire de la tete de forage d'une telle installation |
-
2009
- 2009-04-10 FR FR0952407A patent/FR2944299B1/fr active Active
-
2010
- 2010-04-06 EP EP10723203.5A patent/EP2417304B1/fr active Active
- 2010-04-06 WO PCT/FR2010/050652 patent/WO2010116081A1/fr not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2010116081A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2944299B1 (fr) | 2016-08-26 |
| EP2417304B1 (fr) | 2018-06-06 |
| FR2944299A1 (fr) | 2010-10-15 |
| WO2010116081A1 (fr) | 2010-10-14 |
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