EP1975323B1 - Schneidkopf für eine Bodenschneidemaschine mit rotierenden Fräsen - Google Patents

Schneidkopf für eine Bodenschneidemaschine mit rotierenden Fräsen Download PDF

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Publication number
EP1975323B1
EP1975323B1 EP08152589A EP08152589A EP1975323B1 EP 1975323 B1 EP1975323 B1 EP 1975323B1 EP 08152589 A EP08152589 A EP 08152589A EP 08152589 A EP08152589 A EP 08152589A EP 1975323 B1 EP1975323 B1 EP 1975323B1
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EP
European Patent Office
Prior art keywords
cutter
hydraulic motors
motor
hydraulic
cutter head
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
EP08152589A
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English (en)
French (fr)
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EP1975323A1 (de
Inventor
Philippe Chagnot
Laurent Pivert
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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Publication of EP1975323A1 publication Critical patent/EP1975323A1/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
    • 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
    • E02F3/241—Digging wheels; Digging elements of wheels; Drives for wheels digging wheels
    • 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
    • E02F3/246—Digging wheels; Digging elements of wheels; Drives for wheels drives
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C25/00—Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam
    • E21C25/06—Machines slitting solely by one or more cutting rods or cutting drums which rotate, move through the seam, and may or may not reciprocate

Definitions

  • the present invention relates to a cutting head for a ground milling machine with rotary milling cutters.
  • a first type of such a machine is used to make in the ground trenches of relatively large depth, up to 100 meters, and 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.
  • these cutting machines are constituted by a frame of relatively large height 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.
  • These machines are in themselves well known and it is therefore sufficient to indicate that 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 motors are placed at the lower part of the frame of the machine above the cutting head and the power is transmitted to the milling drum by a transmission chain.
  • a second type of such a machine is used for the production of walls molded in the soil obtained by cutting in the soil of a trench having the shape of the wall to be used and by mixing in situ. soil cut with a hydraulic binder. This technique of making molded walls is known as "soil mixing".
  • the diaphragm wall generally has a smaller depth than the trenches mentioned above.
  • the frame of the machine has dimensions much smaller.
  • the cutting head of these soil mixing machines is also usually constituted by two milling motors each carrying a pair of milling drums.
  • 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 and third embodiments of soil cutting 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.
  • the elements of the transmission kinematic chain of the first and third embodiments introduce significant losses of efficiency of the order of 15% which is exempt from the solution described in the European patent of Soletanche company.
  • each cutter motor drives two cutter drums, it is important that the different conditions of rotation resistance of the drums due to the inhomogeneity of the grounds encountered by the machine do not induce any damaging effect on the mechanical strength of the drills. strawberry motors.
  • An object of the present invention is to provide a cutting head for a rotary milling cutter which offers better performance in terms of torque and / or speed than prior machines and which improves the mechanical strength of the motor (s). of strawberry.
  • each transmission assembly comprises a disk-shaped structure whose center is integral with an end of said common shaft and whose periphery is integral with one end of a milling drum.
  • the securing means in rotation comprise clamping screws to ensure friction between a face of said disk-shaped structure and a face of the rotor frame.
  • the securing means further comprise pins engaged in holes in the faces of the disk-shaped structure and the rotor housing.
  • FIG. 1A and 1B the assembly of a soil cutting machine has been represented in a simplified manner so as to make a deep trench.
  • 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 essentially consists of a fixing plate 20 on which are mounted two milling drums 22 and 24 symmetrical with respect to the median plane of the fixing plate 20.
  • the invention relates to the rotary drive of 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 cutting head which will be defined in the following description could be part of a "soil mixing" machine.
  • the upper frame of the machine would be lighter and much smaller than the one shown on the Figures 1A and 1B .
  • the suction nozzle 17 would be removed and that it would be replaced by one or more injection nozzles in the cut soil of the hydraulic binder.
  • one of the essential characteristics of the invention consists in the fact that a direct mechanical connection is made in rotation between the rotor of the two hydraulic motors and the mechanical transmission assembly between the common shaft of the two motors and the drums of strawberry.
  • the mill motor 16 comprises a mounting structure 26 which is integral with the fixing plate 20 and engaged in a circular opening 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
  • the mounting assemblies 32 and 34 are constituted by cylindrical shells 36 and 38 which thus define two substantially cylindrical mounting cavities 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 surrounds a common shaft 50 whose geometric axis coincides with the axis XX 'which is also that of the rotors of the hydraulic motors.
  • 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 the transmission assemblies or rims 52 and 54. This attachment can be preferably carried out by splines 55.
  • 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 radial and axial forces applied by the milling drums during milling operations.
  • mechanical systems such as 60 and 62 provide a direct rotational connection respectively between the rotors 44b and 46b of the hydraulic motors 44 and 46 and on the other hand covers 64 and 66 constituting part of rims 52 and 54 which connect the ends of the shaft 50 to the milling drums 22 and 24.
  • the milling drums are integral in rotation with the motor rotors by the mechanical systems 60 and 62.
  • An embodiment of these systems mechanics will be described in connection with the figure 4 .
  • the shaft 50 simply connects the strawberry drums together.
  • Pipes such as 70 are drilled in the thickness of the fixing plate 20. One end thereof is connected to supply or discharge lines disposed on the frame of the cutter and their other lower end is connected to pipelines represented schematically by 72 on the figure 2 .
  • supply lines 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.
  • 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 lines 70 and the pipes 72 have been shown in greater detail.
  • the five supply lines 70a to 70e have been shown in the thickness of the fixing plate 20.
  • 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.
  • each cover 64 is constituted by two pieces bolted together 64a, 64b.
  • these mechanical systems 60 and 62 are constituted by an alternation of pins 80 and screws 82 regularly arranged around the axis XX 'of the hydraulic motors.
  • the purpose of the screws 80 is to ensure a high friction between the end face 45 of the rotor 44b and the internal face 63 of the cover 64, so as to lock the rotor and the rim 52 in rotation.
  • the purpose of the pins 80 is to complete, if necessary, the securing carried out by the screws 82. They are housed in blind holes formed in the face 45 of the rotor of each hydraulic motor and in blind holes made in the internal face 63 of the rim cover.

Claims (6)

  1. Schneidkopf für eine Bodenschneidmaschine, umfassend mindestens einen Fräsenmotor (16), wobei jeder Fräsenmotor aufweist:
    - zwei Hydraulikmotoren (44, 46), die jeweils einen Stator (44a, 46a) und einen Rotor (44b, 46b) aufweisen und eine gemeinsame Achse (XX') haben,
    - eine einzige Welle (50), die sich entlang der gemeinsamen Achse erstreckt und zwei Enden hat,
    - zwei Fräsentrommeln (22, 24), die drehbar montiert sind, und
    - zwei Übertragungseinheiten (52, 54, 64, 66), um jedes Ende (50b, 50c) der gemeinsamen Welle mit einer der Fräsentrommeln kinematisch zu verbinden, wobei der Schneidkopf dadurch gekennzeichnet ist, daß er ferner aufweist:
    - mechanische Mittel (60, 62), um den Rotor (44b, 46b) jedes Hydraulikmotors mit der Übertragungseinheit, die der Fräsentrommel (22, 24) entspricht, die dem Hydraulikmotor am nächsten liegt, drehfest zu verbinden.
  2. Schneidkopf nach Anspruch 1, dadurch gekennzeichnet, daß jede Übertragungseinheit aufweist:
    eine Struktur in Scheibenform (64, 66), deren Mitte fest mit einem Ende (50b, 50c) der gemeinsamen Welle (50) verbunden ist und deren Umfang fest mit einem Ende einer Fräsentrommel (22, 24) verbunden ist.
  3. Schneidkopf nach Anspruch 2, dadurch gekennzeichnet, daß die Mittel zum drehfesten Verbinden Spannschrauben (82) aufweisen, um eine Reibung zwischen einer Fläche der Struktur in Scheibenform und einer Fläche des Rahmens des Rotors sicherzustellen.
  4. Schneidkopf nach einem der Ansprüche 2 und 3, dadurch gekennzeichnet, daß die Mittel zum festen Verbinden ferner Stifte (8) aufweisen, die in Löcher eingefügt sind, die in den Flächen der Struktur in Scheibenform (64, 66) des Rahmens des Rotors eingerichtet sind.
  5. Schneidkopf nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß jeder Fräsenmotor ferner aufweist:
    - eine Befestigungsplatte (20),
    - eine Montagestruktur (26), die mit der Befestigungsplatte fest verbunden ist, die einen zentralen Teil (30) und zwei Montagebaugruppen (33, 34) aufweist, die zu beiden Seiten der Mittenebene der Befestigungsplatte angeordnet sind, wobei jeder Hydraulikmotor (44, 46) in einer der Montagebaugruppen (32, 34) montiert ist,
    - mehrere Leitungen (72), die in der Stärke der Befestigungsplatte (20) für die Zirkulation der Flüssigkeit, die von den Hydraulikmotoren verwendet wird, eingerichtet sind, und
    - mehrere Kanalisationen (72), die in dem zentralen Teil (30) der Montagestruktur (26) eingerichtet sind, wobei die Kanalisationen einerseits an die Leitungen und andererseits an die Hydraulikmotoren angeschlossen sind, um jeden der Motoren (44, 46) an jede der Leitungen anzuschließen.
  6. Schneidkopf nach Anspruch 5, dadurch gekennzeichnet, daß die zwei Hydraulikmotoren (44, 46) im wesentlichen identisch sind und daß sie in bezug zu der Mittenebene (A, A') der Befestigungsplatte (20) im wesentlichen symmetrisch sind.
EP08152589A 2007-03-28 2008-03-11 Schneidkopf für eine Bodenschneidemaschine mit rotierenden Fräsen Active EP1975323B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0754098A FR2914331B1 (fr) 2007-03-28 2007-03-28 Tete de coupe pour une machine de decoupe du sol a fraises rotatives

Publications (2)

Publication Number Publication Date
EP1975323A1 EP1975323A1 (de) 2008-10-01
EP1975323B1 true EP1975323B1 (de) 2010-07-28

Family

ID=38621815

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08152589A Active EP1975323B1 (de) 2007-03-28 2008-03-11 Schneidkopf für eine Bodenschneidemaschine mit rotierenden Fräsen

Country Status (10)

Country Link
US (1) US8128178B2 (de)
EP (1) EP1975323B1 (de)
JP (1) JP5204519B2 (de)
KR (1) KR101540950B1 (de)
AT (1) ATE475750T1 (de)
CA (2) CA2624844C (de)
DE (1) DE602008001912D1 (de)
ES (1) ES2349901T3 (de)
FR (1) FR2914331B1 (de)
HK (1) HK1120845A1 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102305066B (zh) * 2011-08-26 2013-12-25 三一重型装备有限公司 一种采煤机及其截割滚筒装置
KR102524477B1 (ko) * 2015-01-15 2023-04-24 메카니카 브레간제세 에스.피.에이. 인 브리브 엠비 에스.피.에이. 굴착기 및 일반 건설 장비용 유압 장치
DE202019102438U1 (de) * 2019-02-21 2020-05-25 Liebherr-Components Biberach Gmbh Fräsanordnung für eine Schlitzwandfräse
CN109915132A (zh) * 2019-03-29 2019-06-21 中国铁建重工集团有限公司 截割装置及掘进设备

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4047763A (en) * 1976-04-27 1977-09-13 Joy Manufacturing Comapny Mining machine with cutter drum having internal drive motors
DE3424999C2 (de) * 1984-07-06 1994-01-13 Bauer Spezialtiefbau Schlitzwandfräse
FR2604460B1 (fr) * 1986-09-26 1991-05-10 Soletanche Dispositif pour engin destine a creuser des tranchees dans le sol par fraisage
FR2618172B1 (fr) * 1987-07-16 1989-11-17 Soletanche Engin de fraisage pour creuser des tranchees dans le sol.
FR2641807B1 (fr) * 1989-01-13 1991-04-05 Soletanche Dispositif de fixation des tambours de fraisage sur un appareil destine a creuser des tranchees dans le sol
IT1240873B (it) * 1990-03-16 1993-12-17 Casagrande Spa Dispositivo di scavo con fressa rotante ad asse orizzontale
IT1267931B1 (it) * 1994-10-21 1997-02-18 Casagrande Spa Fresa con supporto a cuscinetto
IT1267930B1 (it) * 1994-10-21 1997-02-18 Casagrande Spa Fresa con supporto a bussola
US6270163B1 (en) * 1998-09-14 2001-08-07 Holmes Limestone Co. Mining machine with moveable cutting assembly and method of using the same
AUPP764598A0 (en) * 1998-12-11 1999-01-14 R N Cribb Pty Limited Rotary drum cutting head
FR2819834B1 (fr) * 2001-01-23 2003-04-04 Cie Du Sol Outil de fraisage pour la coupe de terrains durs et de terrains collants
ITBO20010632A1 (it) * 2001-10-16 2003-04-16 Simex Engineering S R L Fresatrice oleodinamica per macchine escavatrici
JP2004190387A (ja) * 2002-12-12 2004-07-08 Mitsui Miike Mach Co Ltd ツインヘッダ
FR2862336B1 (fr) * 2003-11-18 2006-03-17 Cie Du Sol Machine de forage a outils rotatifs

Also Published As

Publication number Publication date
FR2914331B1 (fr) 2009-07-03
KR20080088507A (ko) 2008-10-02
CA2624844A1 (en) 2008-09-28
JP2008240511A (ja) 2008-10-09
JP5204519B2 (ja) 2013-06-05
EP1975323A1 (de) 2008-10-01
HK1120845A1 (en) 2009-04-09
KR101540950B1 (ko) 2015-07-31
US8128178B2 (en) 2012-03-06
FR2914331A1 (fr) 2008-10-03
ATE475750T1 (de) 2010-08-15
ES2349901T3 (es) 2011-01-12
CA2624844C (en) 2015-09-08
US20080296959A1 (en) 2008-12-04
CA2627632A1 (en) 2008-09-28
DE602008001912D1 (de) 2010-09-09

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