EP4074898B1 - Excavatrice à fraises et procédé de changement de la largeur de la fraise - Google Patents

Excavatrice à fraises et procédé de changement de la largeur de la fraise Download PDF

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Publication number
EP4074898B1
EP4074898B1 EP21167909.7A EP21167909A EP4074898B1 EP 4074898 B1 EP4074898 B1 EP 4074898B1 EP 21167909 A EP21167909 A EP 21167909A EP 4074898 B1 EP4074898 B1 EP 4074898B1
Authority
EP
European Patent Office
Prior art keywords
cutting wheel
diaphragm wall
module
cutting
wheel drive
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
EP21167909.7A
Other languages
German (de)
English (en)
Other versions
EP4074898C0 (fr
EP4074898A1 (fr
Inventor
Ludwig Andreas Huber
Leonhard Weixler
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.)
Bauer Maschinen GmbH
Original Assignee
Bauer Maschinen GmbH
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 Bauer Maschinen GmbH filed Critical Bauer Maschinen GmbH
Priority to EP21167909.7A priority Critical patent/EP4074898B1/fr
Priority to KR1020237034675A priority patent/KR20230164081A/ko
Priority to CN202280028151.0A priority patent/CN117377801A/zh
Priority to PCT/EP2022/058563 priority patent/WO2022218719A1/fr
Publication of EP4074898A1 publication Critical patent/EP4074898A1/fr
Application granted granted Critical
Publication of EP4074898C0 publication Critical patent/EP4074898C0/fr
Publication of EP4074898B1 publication Critical patent/EP4074898B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • E02F3/20—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
    • E02F3/246—Digging wheels; Digging elements of wheels; Drives for wheels drives

Definitions

  • the invention relates to the further development of a trench wall cutter with at least one bearing plate, a central drive shaft, which is arranged in the bearing plate, at least two cutting wheel drives, each of which is arranged on one side of the bearing plate, and at least two cutting wheels, each of which is mounted on a cutting wheel drive and of these can be driven to rotate.
  • the invention further relates to a method for changing a milling width of a trench wall cutter, wherein existing first milling wheels with a first milling wheel width are changed and replaced by second milling wheels with a second milling wheel width, which is different from the first milling wheel width, according to the preamble of claim 14.
  • a generic trench wall cutter with a bearing plate and a cutting wheel drive with a cutting wheel arranged on the side is, for example, from EP 1 666 671 B1 known.
  • the milling wheel drive is designed as a gear. Via a central drive shaft in the end shield, a drive torque is transmitted from a drive motor mounted on the milling frame to transversely directed drive shafts, which distribute the drive torque between the two milling wheel drives.
  • the milling wheel drives are usually designed as reduction gears.
  • the milling wheel drives protrude into a hollow hub area of the drum-shaped milling wheels, which are mounted on the milling wheel drives via a pivot bearing arrangement.
  • the milling wheels are designed in such a way that they reach up to the end shield for effective milling.
  • the axial length of the milling wheels determines the width of the milling slot.
  • the width of the milling slot is therefore twice the length of the milling wheels plus the width of the end shield.
  • Diaphragm wall milling machines are used to create diaphragm walls or sealing walls in the ground, whereby the milling slot formed in the ground is filled with a hardening concrete or sealant.
  • a typical slot width is around 1 meter, although diaphragm wall widths of up to 2 meters and more may also have to be created depending on the respective requirements.
  • the document EP1882781 A1 describes a trench wall cutter with at least one bearing plate, at least two hydraulic motors as cutting wheel drives, which are each arranged on one side of the bearing plate, and with at least two cutting wheels, which are each mounted on a cutting wheel drive and can be driven in rotation by this, the hydraulic motors each being a detachable one Milling wheel drive module can be viewed.
  • the document JPH02104817A discloses a trench wall cutter with at least one bearing plate, at least two cutting wheel drives, each of which is arranged on one side of the bearing plate, and with at least two cutting wheels, each of which is mounted on a cutting wheel drive and can be driven in rotation by it.
  • the document US6626500B1 discloses a trench wall cutter with at least one end shield and a hydraulic motor as a cutting wheel drive.
  • Another generic trench wall cutter comes from the EP 1 637 794 B1
  • the invention is based on the object of specifying a trench wall cutter and a method with which different slot widths can be produced particularly efficiently.
  • the trench wall cutter according to the invention is such that the cutting wheel drives are each designed as a detachable cutting wheel drive module and that an adapter module is arranged between the end shield and each cutting wheel drive module, which is detachable and exchangeable to adapt to different cutting wheel widths.
  • a basic idea of the invention is to construct the trench wall cutter in a modular manner with regard to the cutting wheel drive and its holder.
  • slot wall width When the slot wall width is changed, not only the milling wheels with a changed slot width are replaced. Rather, it is provided according to the invention to also change and adapt the position of the milling wheel drive when the milling width of a milling wheel is changed.
  • each milling wheel drive is designed as a milling wheel drive module, which can be easily assembled and dismantled as a unit.
  • a milling wheel drive module in the sense of the invention can be a drive motor flanged to the end shield with or without a gear or just a gear that is driven via a drive shaft in the end shield.
  • an adapter module is arranged between the bearing plate and the milling wheel drive module, which can be easily changed and adapted when replacing milling wheels with a changed milling width.
  • the adapter module can each have a correspondingly adapted axial width, so that the existing milling wheel drive module is preferably further loaded centrally, i.e. the point of application of the forces caused by the milling wheels act approximately centrally on the milling wheel drive and a corresponding pivot bearing arrangement. In this way, undesirable transverse forces and tilting moments on the milling wheel drive can be largely avoided, so that maintenance costs are reduced and a long service life of the motor and/or the gearbox is further ensured.
  • the same milling wheel drive modules can be used for different milling widths with essentially the same favorable load.
  • the design of the milling wheel drive modules and the pivot bearing arrangements can be designed the same for both sides of the end shield, so that only a few components must be kept available for a large number of trench wall cutters with different slot widths. If necessary, the milling wheel drive modules can also be changed and/or changed in a simple manner.
  • the milling wheel drive module has a sleeve-shaped housing on which a drum-shaped milling wheel is rotatably mounted via a pivot bearing arrangement.
  • the pivot bearing arrangement preferably has rolling bearings, which are preferably positioned in an O-arrangement on the outer circumference of the sleeve-shaped housing. With this arrangement, long bearing lives can be achieved.
  • the rotary bearing can be arranged on an outside or on an inside of a housing wall.
  • an axial center of the pivot bearing arrangement is aligned with an axial center of the milling wheels.
  • the position of the milling wheels on the milling wheel drives can be selected so that the inner edge of the milling wheels must reach up to the end shield for effective milling. As the milling wheel width increases, one center of the milling wheel shifts further outwards.
  • the milling wheel drive module can track the center displacement. The enlargement of the adapter module can correspond to approximately half the length of the milling wheel extension. Unfavorable transverse and tilting forces on the gear arrangement are thus avoided, since the operating forces during milling can be introduced into the bearing arrangement as symmetrically as possible.
  • a damping element for damping torque shocks can be arranged between the output shaft and the milling wheel.
  • the adapter module is designed in a ring shape with a central passage for a shaft to pass through.
  • the adapter module can be solid.
  • the adapter module can be easily detachably connected via screw connections on the one hand to the milling wheel drive module and on the other hand to the end shield.
  • a further expedient embodiment of the invention is that the adapter module is box-shaped with an inner cavity. Especially at By setting larger slot widths, a relatively light construction can be achieved. At the same time, the formation of a closed internal cavity ensures that no excessive additional need for gear oil is caused by the attachment of the adapter module.
  • the adapter module is preferably made of a steel material and is in particular welded, although light metal materials can also be used.
  • the box-shaped adapter module has two side plates, an axially circumferential peripheral wall and a sleeve for forming a central passage.
  • a hollow adapter module with an inner closed cavity can be produced in a simple manner.
  • the adapter module has at least one additional passage channel for an oil passage.
  • An oil channel is preferably arranged in a lower region of the adapter module and/or in an upper region. This means that oil can be reliably drained and filled via the end shield in the connected milling wheel gear modules.
  • the milling wheel drive modules have a gear that can be driven via a central drive shaft in the end shield.
  • the housing of the milling wheel drive modules there is an arrangement of toothed elements, which in particular form a reduction gear.
  • the milling wheel drive module has a drive motor with or without a gearbox arranged on the end shield.
  • the milling wheel drive module can in particular be designed as a direct drive for directly driving the milling wheel attached to it.
  • the type of drive for this drive is basically any, with an electric motor in particular is compact and also easy to assemble.
  • the direct drive can be provided with or without a gear stage, in particular a reduction gear.
  • the milling drive module has an input shaft on the side of the end shield and an axially opposite output shaft, which is releasably connected to the associated milling wheel.
  • the milling wheel drive module thus has a defined input element and a defined output element for torque transmission.
  • An input shaft or an output shaft in the sense of the invention can also be understood as a ring gear or a gear without a pronounced elongated extension.
  • the input shaft and/or the output shaft preferably have an easily detachable, torque-transmitting connection, such as an axial keyway connection. This allows for easy assembly and disassembly of the milling wheel drive module.
  • an exchangeable adapter shaft is detachably arranged between the central drive shaft and the respective milling wheel drive module.
  • the length of the detachable adapter shaft depends on the width of the adapter module.
  • the adapter shaft allows continued good torque transmission from the central drive shaft in the end shield to the input shaft of the milling wheel drive module.
  • a bevel gear stage can be arranged in the end shield at the lower end of the central drive shaft, with which the torque is transmitted from the essentially vertically directed central drive shaft to the essentially horizontally directed distribution shafts.
  • a further advantageous embodiment of the invention is that it has a milling frame, on the underside of which at least one bearing plate with the milling wheel drive modules is arranged.
  • a milling frame on the underside of which at least one bearing plate with the milling wheel drive modules is arranged.
  • two end shields lying next to each other are arranged on the underside of the milling frame. In this way, two pairs of milling wheels can be arranged compactly at the lower end of the milling frame.
  • a drive it is expedient for a drive to be mounted on the milling frame, through which the central drive shaft can be driven in rotation.
  • a central drive shaft can also be provided, especially if several end shields are attached to the milling frame.
  • a hydraulic motor in particular is provided as a drive for high torque.
  • a trench wall cutter 10 has a cutter frame 12, with only a lower part of the cutter frame 12 being shown in the figure.
  • One or preferably two plate-shaped bearing plates 14 are attached to the underside of the milling frame 12, on each side of which a milling wheel 20 with outer milling teeth 24 is rotatably mounted.
  • a drive shaft 16 is schematically indicated with its drive axle, which is driven in rotation by a drive motor, not shown, on the milling frame 12.
  • the drive shaft 16 extends within an interior of the hollow bearing plate 14.
  • a bevel gear (not shown) the drive torque is transferred from the drive shaft 16, which is essentially vertically directed during operation, approximately at right angles to the two laterally directed adapter shafts 70 to drive the milling wheels 20 distributed.
  • the adapter shafts 70 simultaneously represent an input for a gear 31 of a milling wheel drive module 30.
  • a drum-like milling wheel drive module 30 is detachably attached to each side of the bearing plate 14, on which a milling wheel 20 is rotatably mounted via a rotary bearing arrangement 40 with roller bearings 42.
  • each milling wheel drive module 30 has a drum-shaped housing 32, on the inside of which a ring gear 33 is formed.
  • a planet carrier 36 is rotatably mounted about an axis of rotation 21 of the milling wheels 20 via the pivot bearing arrangement 40.
  • planet gears 34 are rotatably mounted on the planet carrier 36, which on the one hand mesh with a central drive pinion on the adapter shaft 70 and on the other hand with the annular ring gear 33 with internal teeth, so that the planet carrier 36 can be set in rotation as a reduction stage about the axis of rotation 21.
  • a cylindrical base body 22 of the cutting wheel 20 is attached in a rotationally fixed manner via an annular elastic damping element 28.
  • the rotary drive arrangement 40 is located approximately in an axial center plane, which is directed perpendicular to the axis of rotation 21 and centrally to the axial width of each cutting wheel 20.
  • the associated milling wheel 20 is therefore attached to the planet carrier 36.
  • annular adapter module 50 When mounting a milling wheel 20 with a different axial wheel width, an annular adapter module 50 can be changed, which is arranged between the bearing plate 14 and the respective milling wheel drive module 30.
  • each adapter module 50 is formed from a first side plate 52, which is detachably flanged to the associated side of the end shield 14, and a second side plate 54, the two side plates 52, 54 having an annular outer peripheral wall 56 and a central sleeve 58 to form a center passage 60 for the adapter shaft 70 are preferably formed by welding.
  • a central annular cavity 62 is formed in the adapter module 50, whereby a relatively light structure and a small oil absorption volume in the central passage 60 are achieved.
  • the milling wheel drive module 30 is preferably releasably attached to the second side plate 54 via screw connections.
  • An interior of the end shield 14 and an interior of the housing 32 are filled with oil and are in fluid communication with one another via the central passage 60 and additional through channels 64 in or along the peripheral wall 56 of the respective adapter module 50.
  • the common transmission space formed in this way is at least partially filled with transmission oil.
  • the existing milling wheel 20 is removed and the respective milling wheel drive module 30 and the associated adapter module 50 are detached from the end shield 40.
  • a suitable, larger adapter module 50 is then inserted and the existing milling wheel drive module 30 is fastened again together with the adapter module 50 to the end shield 14.
  • the modified cutting wheel 20 can then be mounted on the cutting wheel drive module 30. In this way, a center arrangement between the pivot bearing arrangement 40 of the cutting wheel drive module 30 and the cutting wheel 20 can continue to exist, whereby favorable loading conditions are always achieved.
  • a corresponding smaller adapter module 50 with a smaller axial length can be mounted on the end shield 14 or it can be omitted entirely.
  • an adapter shaft 70 with an adjusted axial length is installed between the drive shaft 16 and the milling wheel drive module 30.

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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)
  • Milling Processes (AREA)
  • General Details Of Gearings (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)

Claims (16)

  1. Excavatrice à fraises avec
    - au moins un flasque (14),
    - au moins deux entraînements de roue de fraisage, lesquels sont disposés respectivement sur un côté du flasque (14), et
    - au moins deux roues de fraisage (20), lesquelles sont montées respectivement sur un entraînement de roue de fraisage et peuvent être entraînées en rotation par celui-ci, dans laquelle
    - les entraînements de roue de fraisage sont réalisés respectivement en tant que module d'entraînement de roue de fraisage (30) détachable et dans laquelle
    - un module adaptateur (50), lequel est détachable et changeable pour l'adaptation à différentes largeurs de roue de fraisage, est disposé entre le flasque (14) et chaque module d'entraînement de roue de fraisage (30).
  2. Excavatrice à fraises selon la revendication 1,
    caractérisée en ce
    que le module d'entraînement de roue de fraisage (30) présente un carter (32) en forme de manchon, sur lequel une roue de fraisage (20) en forme de tambour est montée en rotation par l'intermédiaire d'un ensemble de palier rotatif (40).
  3. Excavatrice à fraises selon la revendication 1 ou 2,
    caractérisée en ce
    qu'un centre axial de l'ensemble de palier rotatif (40) est orienté sur un centre axial de la roue de fraisage (20).
  4. Excavatrice à fraises selon l'une quelconque des revendications 1 à 3,
    caractérisée en ce
    que le module adaptateur (50) est réalisé de manière annulaire avec un passage central (60) pour une traversée d'arbre.
  5. Excavatrice à fraises selon l'une quelconque des revendications 1 à 4,
    caractérisée en ce
    que le module adaptateur (50) est réalisé en forme de caisse avec une cavité intérieure (62).
  6. Excavatrice à fraises selon la revendication 4 ou 5,
    caractérisée en ce
    que le module adaptateur (50) en forme de caisse ou annulaire présente deux plaques latérales (52, 54), une paroi périphérique (56) s'étendant axialement et un manchon (58) pour former un passage central (60).
  7. Excavatrice à fraises selon l'une quelconque des revendications 1 à 6,
    caractérisée en ce
    que le module adaptateur (50) présente au moins un canal de passage (64) additionnel pour une traversée d'huile.
  8. Excavatrice à fraises selon l'une quelconque des revendications 1 à 7,
    caractérisée en ce
    que les modules d'entraînement de roue de fraisage (30) présentent une transmission (31), laquelle peuvent être entraînés par l'intermédiaire d'un arbre d'entraînement central (16) dans le flasque (14).
  9. Excavatrice à fraises selon l'une quelconque des revendications 1 à 7,
    caractérisée en ce
    que le module d'entraînement de roue de fraisage (30) présente un moteur d'entraînement disposé sur le flasque (14) avec ou sans transmission.
  10. Excavatrice à fraises selon l'une quelconque des revendications 1 à 9,
    caractérisée en ce
    que le module d'entraînement de roue de fraisage (30) présente une entrée vers le côté du flasque (14) et une sortie opposée axialement, laquelle est reliée de manière détachable à la roue de fraisage (20) associée.
  11. Excavatrice à fraises selon la revendication 8 à 10,
    caractérisée en ce
    qu'un arbre adaptateur (70) changeable est disposé de manière détachable entre l'arbre d'entraînement central (16) et le module d'entraînement de roue de fraisage (30) respectif.
  12. Excavatrice à fraises selon l'une quelconque des revendications 1 à 11,
    caractérisée en ce
    que celle-ci présente un cadre de fraise (12), sur le côté inférieur duquel au moins un flasque (14) est disposé avec les modules d'entraînement de roue de fraisage (30).
  13. Excavatrice à fraises selon la revendication 12,
    caractérisée en ce
    qu'un entraînement, par lequel l'arbre d'entraînement central (16) peut être entraîné en rotation, est monté sur le cadre de fraise (12).
  14. Procédé pour modifier une largeur de fraise d'une excavatrice à fraises (10), dans lequel les premières roues de fraisage (20) existantes avec une première largeur de roue de fraisage sont changées et remplacées par des deuxièmes roues de fraisage (20) avec une deuxième largeur de roue de fraisage, laquelle est différente de la première largeur de roue de fraisage,
    caractérisé en ce
    qu'une excavatrice à fraises (10) selon l'une quelconque des revendications 1 à 13 est utilisée, et
    que lors du changement des roues de fraisage (20) les modules d'entraînement de roue de fraisage (30) sont détachés et un module adaptateur (50) adéquat est ajouté à chaque côté du flasque (14) conjointement avec le module d'entraînement de roue de fraisage (30).
  15. Procédé selon la revendication 14,
    caractérisé en ce
    qu'une largeur axiale du module adaptateur (50) est choisie de sorte qu'un centre axial des deuxièmes roues de fraisage (20) ajoutées se trouve sensiblement dans la position dans laquelle un centre axial des premières roues de fraisage (20) changées s'est trouvé.
  16. Procédé selon la revendication 14 ou 15,
    caractérisé en ce
    que le centre axial de la roue de fraisage (20) respective se trouve sensiblement dans un plan central d'un ensemble de palier rotatif (40), avec lequel la roue de fraisage (20) est montée en rotation sur le module d'entraînement de roue de fraisage (30).
EP21167909.7A 2021-04-12 2021-04-12 Excavatrice à fraises et procédé de changement de la largeur de la fraise Active EP4074898B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP21167909.7A EP4074898B1 (fr) 2021-04-12 2021-04-12 Excavatrice à fraises et procédé de changement de la largeur de la fraise
KR1020237034675A KR20230164081A (ko) 2021-04-12 2022-03-31 다이어프램 벽 커터 및 다이어프램 벽 커터의 절단 폭 변경 방법
CN202280028151.0A CN117377801A (zh) 2021-04-12 2022-03-31 开槽墙铣削机和用于改变开槽墙铣削机的铣削宽度的方法
PCT/EP2022/058563 WO2022218719A1 (fr) 2021-04-12 2022-03-31 Dispositif de coupe de paroi moulée et procédé de modification d'une largeur de coupe d'un dispositif de coupe de paroi moulée

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP21167909.7A EP4074898B1 (fr) 2021-04-12 2021-04-12 Excavatrice à fraises et procédé de changement de la largeur de la fraise

Publications (3)

Publication Number Publication Date
EP4074898A1 EP4074898A1 (fr) 2022-10-19
EP4074898C0 EP4074898C0 (fr) 2023-11-22
EP4074898B1 true EP4074898B1 (fr) 2023-11-22

Family

ID=75477973

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21167909.7A Active EP4074898B1 (fr) 2021-04-12 2021-04-12 Excavatrice à fraises et procédé de changement de la largeur de la fraise

Country Status (4)

Country Link
EP (1) EP4074898B1 (fr)
KR (1) KR20230164081A (fr)
CN (1) CN117377801A (fr)
WO (1) WO2022218719A1 (fr)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02104817A (ja) * 1988-10-12 1990-04-17 Toukiyouwan Oudan Doro Kk 溝孔掘削機
AUPP764598A0 (en) * 1998-12-11 1999-01-14 R N Cribb Pty Limited Rotary drum cutting head
EP1637794B1 (fr) 2004-09-16 2015-11-11 BAUER Maschinen GmbH Fraise pour parois moulées
EP1666671B1 (fr) 2004-12-03 2015-11-04 BAUER Maschinen GmbH Fraise pour paroi moulée
FR2904338B1 (fr) * 2006-07-28 2011-03-04 Cie Du Sol Tete de coupe pour machine d'excavation

Also Published As

Publication number Publication date
WO2022218719A1 (fr) 2022-10-20
KR20230164081A (ko) 2023-12-01
EP4074898C0 (fr) 2023-11-22
EP4074898A1 (fr) 2022-10-19
CN117377801A (zh) 2024-01-09

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