EP2295648A1 - Baumaschine mit mindestens einem mit deflektor bedeckten Rad - Google Patents

Baumaschine mit mindestens einem mit deflektor bedeckten Rad Download PDF

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Publication number
EP2295648A1
EP2295648A1 EP10176443A EP10176443A EP2295648A1 EP 2295648 A1 EP2295648 A1 EP 2295648A1 EP 10176443 A EP10176443 A EP 10176443A EP 10176443 A EP10176443 A EP 10176443A EP 2295648 A1 EP2295648 A1 EP 2295648A1
Authority
EP
European Patent Office
Prior art keywords
excavating machine
drums
deflector
assemblies
cutting
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
Application number
EP10176443A
Other languages
English (en)
French (fr)
Other versions
EP2295648B1 (de
Inventor
Jean-Pierre Hamelin
Daniel Perpezat
Serge Borel
Philippe Chagnot
Hedi Sellami
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
Original Assignee
Soletanche Freyssinet 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.)
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Publication date
Application filed by Soletanche Freyssinet SA filed Critical Soletanche Freyssinet SA
Publication of EP2295648A1 publication Critical patent/EP2295648A1/de
Application granted granted Critical
Publication of EP2295648B1 publication Critical patent/EP2295648B1/de
Active 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
    • 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
    • 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

Definitions

  • the subject of the present invention is the field of excavating and ground cutting machines with rotary milling cutters making it possible in particular to produce molded walls in the ground.
  • the wall has a certain depth and it must be performed with great precision, it is most often used milling machines of the cutter type in which the cutting head is equipped with two rotary assemblies equipped with tools for cutting. 'excavation. These tools, under the effect of the vertical thrust, disintegrate the ground or the rock, which produces large quantities of cuttings.
  • the trench is kept filled with drilling fluid. Drill cuttings in the drilling fluid are then pumped out of the trench.
  • FIG. 1 there is shown an excavation assembly 9, similar to that described in FR 2 806 111 which comprises a carrier 10 provided with an arrow 12.
  • a carrier 10 provided with an arrow 12.
  • This machine 20 comprises a vertical frame 22 at the lower end of which is mounted a cutting head 24.
  • the cutting head is essentially constituted by two rotary cutting assemblies 26 and 28 with horizontal axes of rotation, XX 'parallel to each other.
  • each rotary cutting assembly is constituted by two mills or drums mounted symmetrically on the frame.
  • the excavation machine also comprises, to allow the removal of cuttings, a suction mouth 30 disposed at the lower end of the frame between the two rotary cutting assemblies 26 and 28, a suction pipe 32 connecting the mouth of the suction 30 to a suction device 34, for example a pump, and a duct 36 which makes it possible to suck up the drilling fluid containing the cuttings with a view to evacuating it to a recovery installation.
  • a suction device 34 for example a pump
  • duct 36 which makes it possible to suck up the drilling fluid containing the cuttings with a view to evacuating it to a recovery installation.
  • another Conduit is also intended to fill the trench with the drilling fluid.
  • the cylindrical drums rotate inside a mud volume formed at the bottom of two half-cylinders created by the cut made by the excavation tools mounted on the drums, this volume s' extending essentially to the lower edge of the frame.
  • An object of the invention is to provide an excavating machine having an improved excavation efficiency.
  • the invention therefore relates to an excavating machine according to claim 1.
  • this deflector eliminates the stagnation zones at the top of the mud volume extending around the drums.
  • the flow of the drilling liquid is guided around the rotating cutting assemblies, which makes it possible to remove more cuttings insofar as the drilling fluid is forced to circulate between the drilling tools. cut and the ground.
  • the drilling liquid is prevented from flowing immediately into the suction mouth before it has been able to carry a sufficient quantity of cuttings.
  • the cuttings are therefore more quickly evacuated and, consequently, do not tend to sediment.
  • the deflector according to the invention makes it possible to substantially improve the discharge efficiency of the cuttings, as a result of which, the excavation efficiency of the machine is also substantially improved.
  • the deflector is mounted above the suction mouth.
  • the dimensions of the frame, considered in a horizontal plane, are smaller than the horizontal dimensions of the rotary cutting assemblies.
  • the transverse dimensions of the deflector are slightly smaller than the transverse dimensions of the rotary cutting assemblies.
  • Such a conformation of the deflector further improves the guidance of the drilling liquid to the outside of the drums.
  • the deflector has at least one curved portion which extends tangentially with respect to the drums of one of the rotating assemblies.
  • the drums bear cutting teeth and the curved portion is advantageously disposed slightly above the radial end of the cutting teeth.
  • the shape of the deflector is advantageously chosen so that the latter matches the cylindrical shape of the drums.
  • the angular extent of the curved portion, towards the outside of the rotary cutting assemblies is between 30 and 80 °, preferably between 30 ° and 60 °, this angular extent being considered between two intersecting planes containing axis of rotation of the associated rotational assembly, one of the two planes being vertical, or at least parallel to the longitudinal direction of the frame.
  • the curved portion also extends to an inner zone between the two rotating cutting assemblies, preferably while covering the suction mouth.
  • the cutting head comprises a support plate carrying the rotating assemblies, and the deflector is fixed to this plate, preferably dismountably.
  • the deflector is therefore a separate element of the support plate.
  • the rotating assemblies of the machine are advantageously counter-rotating, preferably so as to bring up the cuttings between the two rotary assemblies towards the suction mouth.
  • the deflector may consist of one or more parts.
  • a chassis also means a kelly-type bar at the lower end of which the rotary cutting assemblies are mounted.
  • the means for moving the excavating machine in a vertical direction comprise an arrow fixed to a carrier, the excavating machine being suspended vertically at the end of said boom.
  • the means for moving the excavating machine in a vertical direction comprise a mast (preferably vertical) fixed to a carrier, the frame being constituted by a bar (kelly) at the lower end of which is fixed the excavating machine, said means further comprising a carriage slidably mounted along the mast while being intended to be fixed to said bar.
  • the movement of the carriage causes the displacement of the excavating machine.
  • the bar constituting the frame has a length, a width and a vertical height chosen so that the length (considered in a horizontal plane) is much smaller than the longitudinal span of the cutting assemblies.
  • the drilling fluid is forced to circulate between the cutting tools and the ground before being sucked by the suction mouth, which improves the thrust of the cuttings and the performance of the excavation.
  • the drilling fluid is a drilling mud.
  • This machine 100 comprises a frame 22 whose length, considered in a horizontal plane, is referenced Lc on the figure 3 .
  • the longitudinal span E1 of the cutting assemblies which substantially corresponds to the length of the trench, is strictly greater than the length Lc of the chassis. Therefore, the excavating machine according to the invention is intended to excavate a trench whose length is greater than that of the frame.
  • the excavating machine 100 is different from that of the figure 2 in that it further comprises a deflector 200 mounted at the lower end 22a of the frame 22 covering, in this case, the drums 26a, 26b, 28a, 28b of the cutting head.
  • the deflector is disposed below the frame.
  • the cutting head comprises a support plate 40 fixed below the frame 22, preferably by an articulated device 42.
  • This support plate 40 carries the rotating assemblies 26,28 and the mouth of intake 30. Further, the support plate 40 is situated below the chassis.
  • the deflector 200 is fixed to this support plate 40 so as to form a skirt projecting laterally around the entire periphery of the support plate 40 so as to cover the drums 26a, 26b, 28a, 28b.
  • the deflector has a length L and a width I which are slightly smaller than the transverse dimensions of the cutting head, that is to say that the width I of the deflector 200 is slightly less than the axial length (E2) (c ie the transverse span) of the rotating assemblies 26,28 and that the length L of the deflector is smaller than the longitudinal span E1 of the rotary assemblies, it being understood that these dimensions are considered in a plane orthogonal to the direction longitudinal P frame 22, or in a plane parallel to a plane containing the axes of rotation of rotary cutting assemblies 26,28. It will further be understood that the length and the width of the cutting head E1, E2 substantially correspond to the transverse dimensions Tx, Ty of the trench T.
  • baffle can be adapted to each size of drums.
  • the deflector 200 also has several curved portions 210 which extend tangentially with respect to the drums 26a, 26b, 28a, 28b. In addition these curved portions are arranged slightly above cutting teeth 31 which project radially at the periphery of the drums. As we see on the figure 3 the angular extent ⁇ of these outwardly curved portions of the rotary cutting assemblies is, in this example, 45 °. For each rotary assembly, this angular extent is considered between two planes Q1, Q2 containing the axis of rotation X of said rotary assembly, one of the two planes, here the plane Q1, being orthogonal to the support plate 40.
  • the curved portions 210 also extend towards an inner zone, between the two rotary cutting assemblies 26, 28, while covering the suction mouth 30.
  • the trench T fills the part of the trench already formed of a drilling fluid, in this case a drilling mud which allows in particular to evacuate the cuttings out of the trench.
  • a drilling fluid in this case a drilling mud which allows in particular to evacuate the cuttings out of the trench.
  • This drilling mud also makes it possible to prevent the part of the trench already excavated from collapsing while maintaining a hydrostatic pressure on the walls of the trench T.
  • the trench is kept filled by the drilling mud throughout the excavation operation, said sludge being sucked by the suction mouth 30 to be discharged through the pipe 36.
  • the flow drilling mud flowing from the top to the bottom of the trench T is illustrated by the arrows F, while the flow of drilled drilling mud is illustrated by the arrows G.
  • the flow of downward drilling mud F is deflected to be brought tangentially at the drums 26a, 26b on the one hand, and 28a, 28b on the other hand.
  • Arrows F1 and F2 represent secondary flows of drilling mud deflected by the baffle which then flow around the drums of each of the two rotating assemblies 26,28. It should be noted that the flows F1 and F2 of drilling mud are in the same direction as the direction of rotation of each of the rotary cutting assemblies.
  • the deflector makes it possible to force the drilling mud to circulate between the cutting teeth 31 and the ground, and this before reaching the suction mouth 30. Indeed, the latter being disposed below the deflector 200, the drilling mud can not reach it before having circulated around the drums.
  • the length E1 (considered in a horizontal plane) of rotary cutting assemblies is about 2800 mm, while the width or thickness (also considered in FIG. a horizontal plane) E2 of the rotary cutting assemblies is between 500 and 2000 mm.
  • the deflector meanwhile has dimensions L, 1 in a horizontal plane chosen so that its lateral edges are slightly set back from the horizontal dimensions of rotary cutting assemblies.
  • the shrinkage may be of the order of 20 mm so that the length L of the deflector will be equal to about 2760 mm.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Paleontology (AREA)
  • Earth Drilling (AREA)
  • Shovels (AREA)
EP10176443.9A 2009-09-15 2010-09-13 Baumaschine mit mindestens einem mit Deflektor bedeckten Rad Active EP2295648B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0956334A FR2950086B1 (fr) 2009-09-15 2009-09-15 Machine d'excavation comportant au moins un tambour couvert par un deflecteur

Publications (2)

Publication Number Publication Date
EP2295648A1 true EP2295648A1 (de) 2011-03-16
EP2295648B1 EP2295648B1 (de) 2020-04-22

Family

ID=41664572

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10176443.9A Active EP2295648B1 (de) 2009-09-15 2010-09-13 Baumaschine mit mindestens einem mit Deflektor bedeckten Rad

Country Status (2)

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EP (1) EP2295648B1 (de)
FR (1) FR2950086B1 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITTO20110961A1 (it) * 2011-10-24 2013-04-25 Soilmec Spa Sistema per la evacuazione di fanghi di scavo.
GB2492910B (en) * 2010-05-10 2016-02-17 Mitsubishi Heavy Ind Ltd Underwater miner cutter head, underwater miner, and underwater mining system
CN108495966A (zh) * 2015-09-10 2018-09-04 索列丹斯-弗莱西奈公司 钻孔机
CN108824523A (zh) * 2018-07-25 2018-11-16 上海工程机械厂有限公司 一种链锯式切割箱
US10724199B2 (en) 2015-10-06 2020-07-28 Soletanche Freyssinet Wharf constituted by arched walls and plane ties
EP4086390A1 (de) * 2021-05-06 2022-11-09 BAUER Maschinen GmbH Schlitzwandfräse und verfahren zum fräsen eines frässchlitzes im boden

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2073675A5 (de) * 1969-12-13 1971-10-01 Takenaka Komuten Co
JPH07216934A (ja) * 1994-02-04 1995-08-15 Ohbayashi Corp ロータリ式掘削機
JPH07310322A (ja) * 1994-05-18 1995-11-28 Kajima Corp 切羽限定式地中連続壁掘削機
FR2806111A1 (fr) 2000-03-13 2001-09-14 Cie Du Sol Appareil de forage en terrain dur

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4919129B1 (de) * 1968-11-11 1974-05-15
DD113159A3 (de) * 1970-11-06 1975-05-20
FR2883893B1 (fr) * 2005-03-31 2007-06-22 Cie Du Sol Soc Civ Ile Bouche d'aspiration pour machine d'excavation de tranchee

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2073675A5 (de) * 1969-12-13 1971-10-01 Takenaka Komuten Co
JPH07216934A (ja) * 1994-02-04 1995-08-15 Ohbayashi Corp ロータリ式掘削機
JPH07310322A (ja) * 1994-05-18 1995-11-28 Kajima Corp 切羽限定式地中連続壁掘削機
FR2806111A1 (fr) 2000-03-13 2001-09-14 Cie Du Sol Appareil de forage en terrain dur

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2492910B (en) * 2010-05-10 2016-02-17 Mitsubishi Heavy Ind Ltd Underwater miner cutter head, underwater miner, and underwater mining system
ITTO20110961A1 (it) * 2011-10-24 2013-04-25 Soilmec Spa Sistema per la evacuazione di fanghi di scavo.
EP2586962A1 (de) * 2011-10-24 2013-05-01 Soilmec S.p.A. Schlammaushub-Abführsystem für eine Maschine zur Herstellung von Schlitzwänden
CN108495966A (zh) * 2015-09-10 2018-09-04 索列丹斯-弗莱西奈公司 钻孔机
CN108495966B (zh) * 2015-09-10 2021-09-21 索列丹斯-弗莱西奈公司 钻孔机
US10724199B2 (en) 2015-10-06 2020-07-28 Soletanche Freyssinet Wharf constituted by arched walls and plane ties
CN108824523A (zh) * 2018-07-25 2018-11-16 上海工程机械厂有限公司 一种链锯式切割箱
CN108824523B (zh) * 2018-07-25 2023-10-20 上海工程机械厂有限公司 一种链锯式切割箱
EP4086390A1 (de) * 2021-05-06 2022-11-09 BAUER Maschinen GmbH Schlitzwandfräse und verfahren zum fräsen eines frässchlitzes im boden
WO2022233672A1 (de) * 2021-05-06 2022-11-10 Bauer Maschinen Gmbh Schlitzwandfräse und verfahren zum fräsen eines frässchlitzes im boden

Also Published As

Publication number Publication date
EP2295648B1 (de) 2020-04-22
FR2950086A1 (fr) 2011-03-18
FR2950086B1 (fr) 2021-05-14

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