EP1882781B1 - Tête de coupe pour une machine d'excavation - Google Patents

Tête de coupe pour une machine d'excavation Download PDF

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Publication number
EP1882781B1
EP1882781B1 EP07112940.7A EP07112940A EP1882781B1 EP 1882781 B1 EP1882781 B1 EP 1882781B1 EP 07112940 A EP07112940 A EP 07112940A EP 1882781 B1 EP1882781 B1 EP 1882781B1
Authority
EP
European Patent Office
Prior art keywords
hydraulic motors
fastener plate
cutter head
cutter
motor
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
EP07112940.7A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1882781A1 (fr
Inventor
Philippe Chagnot
Jean-Claude Riglet
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.)
Filing date
Publication date
Application filed by Soletanche Freyssinet SA filed Critical Soletanche Freyssinet SA
Publication of EP1882781A1 publication Critical patent/EP1882781A1/fr
Application granted granted Critical
Publication of EP1882781B1 publication Critical patent/EP1882781B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • 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
    • 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
    • E02F3/24—Digging wheels; Digging elements of wheels; Drives for wheels
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S37/00—Excavating
    • Y10S37/902—Hydraulic motors

Definitions

  • the present invention relates to a cutting head for an excavating machine usually referred to as a milling cutter.
  • Cutting-type excavating machines are most often used to make trenches of relatively large depth, up to 100 meters, in the soil, and of relatively small width relative to said depth, the width typically being between 500 mm. and 1500 mm.
  • One of the interests of these machines is to allow the realization of such trenches of significant depth that meet stringent verticality criteria.
  • the entire trench is obtained by successive digging of juxtaposed panels.
  • the cutters are constituted by a relatively large frame which provides mechanical guidance of the excavating machine as the trench is made. At the lower end of the frame is fixed a cutting head.
  • the cutting head is usually constituted by two milling motors usually carrying each a pair of drums on which are mounted the milling tools. Each pair of drums rotates about a common axis, the two axes of the mill motors being parallel and horizontal in use.
  • the milling drums are rotated from hydraulic motors.
  • the hydraulic motor is placed on the frame above the cutting head. It transmits power through a shaft of small diameter substantially vertical which passes through the thickness of the plate forming the bearing of the milling motor.
  • the vertical shaft attacks a pair of bevel gears that return motion in the horizontal axis.
  • An epicyclic reduction system reduces the rotation speed and multiplies the torque to effectively drive the mill drums.
  • the first two types of excavating machine have the major disadvantage of having hydraulic motors above the cutting head and thus to present a more complex and more expensive assembly of these engines. In particular, it is impossible to make rapid exchanges of the cutting head.
  • An object of the present invention is to provide a cutting head for a milling type excavating machine which offers better performance in terms of torque and / or speed than prior machines in an available volume determined by the diameter of the drums of the milling machine.
  • milling cutter equipped with milling tools which is in general of the order of 1.4 m and the thickness of the cutting head, which, in the particular case of the invention, is preferably between 600 mm and 1500 mm.
  • this fixing plate can be given a reduced thickness. Indeed, only the pipes are formed in the plate and they are straight.
  • the connecting lines to the hydraulic motors are arranged in the central part of the mounting structure, ie where there is room.
  • the assembly constituted by the fixing plate and the mounting structure of the hydraulic motors is sufficiently rigid to take the bending strain-strain.
  • the cutting head comprises a control system for varying the displacement of the hydraulic motors which is controlled by the fluid conveyed in one of said pipes.
  • the pipes made in the central part of the mounting structure of the cutting head for supplying said hydraulic motors are made in such a way that the axial thrust produced by the feed liquid on the faces of the rotors of the engines is substantially balanced.
  • the milling drums are mounted on the two assembly assemblies by means of bearings interposed between the drums or more precisely their rims and the outer face of the assemblies. For the reasons explained above, the bearings do not have to resume bending efforts.
  • FIG. 1A and 1B the whole of the strawberry-type excavating machine has been represented in a simplified manner.
  • This machine is constituted by a frame 12 of relatively large length and of substantially rectangular horizontal section.
  • the upper end 12a of the chassis is equipped with pulleys 14 on which passes a muffle levitation of the mill 12.
  • On the lower end 12b of the frame 12 are attached two identical milling motors 16 and 18 forming the cutting head.
  • Each cutter motor 16 or 18 is essentially constituted by a fixing plate 20 on which are mounted two milling drums 22 and 24 symmetrical with respect to the median plane of the milling plate.
  • the invention relates to the rotational drive of the milling drums 22, 24 of the milling motors 16 and 18.
  • the suction nozzle 17 for the cut soil debris and the suction pump 19 thereof have also been included.
  • the mill motor 16 comprises a mounting structure 26 which is integral with the fixing plate 20 and engaged in an opening, preferably circular 28, of axis XX '.
  • the mounting structure 26 comprises a central portion 30 which is preferably substantially symmetrical with respect to the median plane of the fixing plate 20 and two mounting assemblies 32 and 34 extending symmetrically preferably on either side of the part This central portion is engaged in the orifice 28 of the plate 20.
  • the assemblies 32 and 34 are constituted by cylindrical shells 36 and 38 which thus define two mounting cavities substantially cylindrical 40 and 42 which are open to the outside. Inside the cavities 40 and 42 which are preferably but not necessarily identical, are mounted the hydraulic motors 44 and 46.
  • Each hydraulic motor comprises a stator 44a, 46a and a rotor 44b and 46b.
  • Each rotor 44b and 46b is mounted on a common shaft 50 whose geometric axis coincides with the axis XX '.
  • the middle portion 50a of the shaft 50 passes through the central portion 30 of the mounting structure by a bore suitably made.
  • the ends 50b and 50c of the shaft 50 are made integral with driving parts or rims 52 and 54.
  • On these rims 52 and 54 are mounted the milling drums 22 and 24.
  • the rims 52 and 54 are guided and supported by rotation by bearings 56 and 58 which are themselves mounted on the outer face 36a, 38a of ferrules 36 and 38 forming the mounting assemblies of the hydraulic motors.
  • the function of the bearings 56 and 58 is essentially the recovery of the forces applied by the milling drums during milling operations.
  • Pipes such as 70 are drilled in the thickness of the Fixing plate 20. These ducts 72 are made in the central portion 30 of the mounting structure. However, the central portion may have a much greater thickness than the plate. The thickness of the central portion may typically be of the order of 400 mm. One of their end is connected to supply or discharge lines arranged on the frame of the milling cutter and their other lower end is connected to pipes shown schematically by 72 on the figure 2 . Since these pipes are straight, it is possible to give the plate 20 a reduced thickness while retaining the necessary mechanical strength. This thickness can be limited to 60 mm. This is very important because below this plate, strawberry drums can not directly dig the ground.
  • each supply line 70 which respectively correspond to the high pressure supply of the hydraulic motors, the low pressure oil return of the hydraulic motors, the drainage internal leakage of the hydraulic motors, to an oil line transmitting a balancing pressure on the seals of the mill motor to prevent penetration of the drilling mud within the mill motors themselves and a pipe transmitting a hydraulic pressure driving a displacement engine displacement device of the hydraulic motors in the case where the mill motor is equipped with such a device.
  • each hydraulic motor can have two different displacements to adapt to the cutting conditions.
  • the displacement change is controlled by a hydraulic system mounted in the central portion 30 of the mounting structure.
  • Balancing systems are well known in themselves. It is not necessary to describe them. It suffices to remember that according to the invention, the feed pipe of the balancing system is formed in the fixing plate 20.
  • Pipes such as 72 are made in the central portion 30 of the mounting structure. These pipes are preferably symmetrical for feeding or recovering liquids in the same way for the two hydraulic motors 44 and 46.
  • the ducts 70 and the ducts 72 are shown in greater detail.
  • the five supply ducts 70a to 70e are shown in the thickness of the fixing plate 20.
  • the pipes 70a to 70e are lined by coating the inner wall with a layer 78 having a high degree of sealing and also a high mechanical strength. This lining 76 of the pipes 70a to 70e makes it possible to ensure the tightness and the integrity of the circulation of the pressurized liquids while allowing, in addition to the linear character of the pipes 70, as already explained, the the fixing plate 20 has a relatively small thickness e, for example of the order of 60 mm.
  • this plate has a relatively small thickness since this thickness defines an area in which the straw drums 22 and 24 are inactive. Only the presence of this fixing plate 20 creates a redan between the zones effectively cut by the mill drums 22 and 24. This redan is sometimes very difficult to break when the geological layer has a high hardness.
  • the lower ends of the pipes 70a to 70e are connected to the pipes 72a to 72e which extend symmetrically in the central portion 26 of the mounting structure.
  • the ends of these pipes are connected to the windows of communication with the rotating parts of the hydraulic motors.
  • the lines 72a to 72e which serve for the high-pressure supply and the low-pressure output of the hydraulic motors 44 and 46 are located at the same distance from the axis XX 'of the central portion 26.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Physics & Mathematics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Earth Drilling (AREA)
  • Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
  • Component Parts Of Construction Machinery (AREA)
EP07112940.7A 2006-07-28 2007-07-23 Tête de coupe pour une machine d'excavation Active EP1882781B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0653169A FR2904338B1 (fr) 2006-07-28 2006-07-28 Tete de coupe pour machine d'excavation

Publications (2)

Publication Number Publication Date
EP1882781A1 EP1882781A1 (fr) 2008-01-30
EP1882781B1 true EP1882781B1 (fr) 2018-03-21

Family

ID=37734372

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07112940.7A Active EP1882781B1 (fr) 2006-07-28 2007-07-23 Tête de coupe pour une machine d'excavation

Country Status (6)

Country Link
US (1) US7765723B2 (ja)
EP (1) EP1882781B1 (ja)
JP (1) JP5379359B2 (ja)
KR (1) KR101429556B1 (ja)
CA (1) CA2594299C (ja)
FR (1) FR2904338B1 (ja)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2899608B1 (fr) * 2006-04-06 2010-04-16 Cie Du Sol Outillage de forage
IT1400429B1 (it) * 2009-12-15 2013-05-31 Soilmec Spa Utensile per diaframmi sottili.
CN103276759B (zh) * 2013-06-29 2015-01-21 芜湖县新芜科技企业孵化器有限公司 双电机成槽机
RU2728629C2 (ru) * 2015-01-15 2020-07-30 Мекканика Бреганцезе С.П.А. Ин Бреве Мб С.П.А. Гидравлическое устройство для экскаваторов и строительных машин в целом
FR3071535B1 (fr) * 2017-09-25 2019-09-27 Soletanche Freyssinet Machine de forage pour la realisation d'une tranchee non rectiligne
CN108360595A (zh) * 2018-03-26 2018-08-03 无锡康斯坦特动力科技有限公司 一种防打断的建筑工地用切槽机
DE102019101305A1 (de) 2019-01-18 2020-07-23 Liebherr-Werk Nenzing Gmbh Modulare Schlitzwandfräse
CN112942463B (zh) * 2021-01-28 2023-01-17 江苏徐工工程机械研究院有限公司 铣轮的驱动总成和铣槽机
CN113153163A (zh) * 2021-04-07 2021-07-23 四川省交通建设集团股份有限公司 矩形桩孔成孔钻头及其成孔方法
EP4074898B1 (de) * 2021-04-12 2023-11-22 BAUER Maschinen GmbH Schlitzwandfräse und verfahren zum ändern einer fräsbreite einer schlitzwandfräse

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004190387A (ja) * 2002-12-12 2004-07-08 Mitsui Miike Mach Co Ltd ツインヘッダ

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DE2037317A1 (de) * 1970-07-28 1972-02-10 Salzgitter Maschinen AG, 3327 Salz gitter Bad Schrämwerkzeug fur eine Vortriebs oder Gewinnungsmaschine
DE2211280C2 (de) * 1972-03-09 1981-05-21 Salzgitter Maschinen Und Anlagen Ag, 3320 Salzgitter Schrämwerkzeug für eine bergmännische Vortriebs- oder Gewinnungsmaschine
FR2251736B1 (ja) * 1973-11-21 1977-06-10 Poclain Sa
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Also Published As

Publication number Publication date
KR20080011126A (ko) 2008-01-31
US7765723B2 (en) 2010-08-03
KR101429556B1 (ko) 2014-08-12
FR2904338B1 (fr) 2011-03-04
JP2008031836A (ja) 2008-02-14
FR2904338A1 (fr) 2008-02-01
EP1882781A1 (fr) 2008-01-30
JP5379359B2 (ja) 2013-12-25
CA2594299A1 (en) 2008-01-28
US20080022563A1 (en) 2008-01-31
CA2594299C (en) 2015-11-24

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