EP4239130A1 - Fraise à parois moulées et procédé de réalisation d'une tranchée dans le sol - Google Patents

Fraise à parois moulées et procédé de réalisation d'une tranchée dans le sol Download PDF

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Publication number
EP4239130A1
EP4239130A1 EP22159510.1A EP22159510A EP4239130A1 EP 4239130 A1 EP4239130 A1 EP 4239130A1 EP 22159510 A EP22159510 A EP 22159510A EP 4239130 A1 EP4239130 A1 EP 4239130A1
Authority
EP
European Patent Office
Prior art keywords
housing
plate
trench wall
clearing
cutting wheel
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.)
Pending
Application number
EP22159510.1A
Other languages
German (de)
English (en)
Inventor
Christian Herrmann
Sebastian Soier
Thomas VOHS
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 EP22159510.1A priority Critical patent/EP4239130A1/fr
Priority to PCT/EP2023/053162 priority patent/WO2023165796A1/fr
Publication of EP4239130A1 publication Critical patent/EP4239130A1/fr
Pending 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
    • 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
    • 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
    • E02F3/248—Cleaning the wheels or emptying the digging elements mounted on the wheels, e.g. in combination with spoil removing equipment

Definitions

  • the invention relates to a trench wall cutter with a box-shaped housing, on the top of which a lifting device can be attached, at least one cutting wheel, which is arranged on an underside of the housing and can be driven in rotation to remove soil material, with cutting teeth being arranged in at least one circumferential row along the outer circumference of the cutting wheel which is adjoined by at least one axial free space, and at least one clearing plate which is arranged so as to be relatively fixed to the housing and engages in the at least one circumferential free space on the cutting wheel for clearing soil material, according to the preamble of claim 1.
  • the invention further relates to a method for creating a milled slot in the ground according to the preamble of claim 14.
  • a generic trench cutter is, for example, from EP 1452645 A1 out. Rows of cutting teeth are arranged along the circumference of the paired cutting wheels. Axial free spaces remain between the rows of milling teeth, into which so-called clearing plates engage.
  • the clearing plates are arranged on the underside of the box-shaped housing and are used to strip off cohesive soil material adhering to the cutting teeth, which can impair the cutting performance, and thus to keep the cutting teeth free of cohesive soil material.
  • the milled-off soil material remains in the soil and can be processed in situ with a supplied, settable suspension to form a so-called soil mortar.
  • the soil mortar can form a diaphragm wall segment in the prepared trench. From such Diaphragm wall segments can be used to create a sealing wall or an enclosing wall, for example to enclose an excavation pit.
  • the box-shaped housing with the drive unit is designed smaller in its outer peripheral dimensions than the milled trench formed in the generic trench cutter. This creates a free space on the housing through which the milled soil material, which is mixed by the milling wheels with the supplied hardening suspension to form the soil mortar, has the opportunity to flow past the housing into an upper region of the milling trench.
  • the cutter wheels are driven in particular in opposite directions, so that the two pairs of cutter wheels each rotate inwards and thus convey soil material into a central region below the cutter housing.
  • the settable suspension can also be supplied in this area in order to bring about a good mixing effect for forming the floor mortar.
  • the invention is based on the object of specifying a trench wall cutter and a method for creating a cut trench, with which a particularly efficient operation when creating a cut trench is made possible.
  • the trench wall cutter according to the invention is characterized in that the at least one clearing plate is attached to a plate holder at a distance from the housing, with a passage being formed between the at least one clearing plate and the housing, through which the ground material milled off during operation can be guided upwards.
  • a basic idea of the invention is not to arrange the clearing plates directly on the underside of the box-shaped housing, but at a distance from the box-shaped housing on plate holders.
  • the plate holders are arranged and designed in such a way that the at least one clearing plate is arranged at a distance from the housing, through which a passage for the milled soil material is formed.
  • ground material that has been milled off can be guided past the clearing plates, optionally with suspension supplied, and thus flow upwards in a simplified manner.
  • the hard rock material does not have to be forced through the meshing arrangement between the cutting teeth and the clearing plates.
  • the actual clearing effect of the clearing plates is retained when soil material sticks to it.
  • the passage can have a size of a few centimeters up to approx. 40% of a cutting wheel diameter in the horizontal longitudinal direction and a size of up to the wheel width of a cutting wheel in the horizontal width direction.
  • a preferred embodiment of the invention consists in that at least two circumferential rows of cutting teeth are arranged on the at least one cutting wheel, which are spaced apart axially from one another by a circumferential free space, in which a clearing plate engages.
  • more than two circumferential rows, in particular four or five circumferential rows, each with a corresponding axial spacing from the adjacent row of teeth, can also be arranged on the cutting wheel.
  • the clearing plates fixed relative to the housing are inserted into the circumferential free spaces in rotation with the cutting wheel driven cutting teeth.
  • the broaching plates can lightly contact, ie scratch, the passing milling teeth and tooth holders, or they can be spaced a small axial distance away, for example a few millimeters.
  • the at least one cutting wheel is mounted on a plate-shaped bearing plate on the underside of the housing and that the at least one clearing plate is attached to the bearing plate with the plate holder.
  • a drive device for driving the cutting wheels can be provided in the bearing plate.
  • the plate holder can be a simple support arm on which the clearing plates are attached.
  • the support arm can be arranged transversely to the center plane of the bearing plate.
  • an L-shaped or T-shaped plate holder can also be attached to a side edge of the end shield or to the housing.
  • each cutting wheel of a pair of cutting wheels is arranged on a common, central bearing plate on either side.
  • the plate holders are arranged on the respective outer side, so that the clearing plates can engage in the circumferential free spaces between the cutting teeth, directed obliquely from the outside inwards.
  • each pair of cutting wheels is mounted on one side of the bearing plate and that each cutting wheel is assigned at least one clearing plate, which is attached to the bearing plate via a plate holder.
  • a plurality of clearing plates for each cutting wheel can also be provided on each plate holder, corresponding to the number of free spaces or gaps between the peripheral rows of the cutting teeth.
  • each cutting wheel is assigned a passage which is delimited by the housing, the bearing plate and the assigned at least one clearing plate with the plate holder.
  • a supply device for supplying a liquid, in particular a hardenable suspension, such as a cement suspension can be pumped from above ground to the trench wall cutter in the cut trench using a suitable pumping device.
  • the feed device is particularly expedient for the feed device to be arranged between two pairs of milling wheels and/or in at least one of the plate holders.
  • the feed device can be arranged in a basically known manner between the two pairs of milling wheels in a central area on the underside of the box-shaped housing.
  • the feed device can also be arranged on the at least one plate holder.
  • the plate holder is at least partially hollow with a feed channel.
  • the feed channel ends in one or more outlet nozzles for the liquid to flow out in the area of the clearing plates.
  • the arrangement of the clearing plates according to the invention can be used on different types of trench cutters via plate holders.
  • an outer circumference of the housing is smaller than a milling cross section of the milling wheels. This forms one or more areas along the housing which form a passage area or passage between the housing and the surrounding bottom wall. This allows milled soil material and in particular soil mortar produced by supplying a settable liquid to flow from the area of the milling wheels past the housing of the milling frame upwards into a section of the milled trench above the housing of the trench wall cutter.
  • the trench cutter according to the invention can be driven in any suitable manner.
  • a drive device in particular a hydraulic motor or an electric motor, for driving the cutting wheels is arranged in the housing.
  • One or more central drive motors can be provided in the housing.
  • a torque transmission can in principle known This can be done via a drive shaft running downwards in the end shield and a corresponding gear in the end shield or on the cutting wheels.
  • the at least one cutting wheel can have a hub in which a hub motor is arranged.
  • the hub motor can also be a hydraulic motor or preferably an electric motor.
  • the box-shaped housing can be used to house other components, or it can be reduced in size accordingly.
  • a fundamentally frame-like construction of the housing is also possible.
  • a further preferred embodiment of the invention consists in the at least one clearing plate and/or the plate holder being detachably fastened and a connecting device being provided on the underside of the housing with which at least one clearing plate can be fastened directly to the housing.
  • a particularly flexible arrangement of the clearing plates can be achieved.
  • the clearing plates arranged on the outside of the plate holder can be partially or completely removed if required.
  • clearing plates can be attached directly to the underside of the housing in a basically known manner.
  • screw connections or other easily detachable types of connection are possible as the connection device.
  • the invention also includes a trench wall milling device with a carrier device on which the trench wall milling cutter according to the invention is arranged so that it can move vertically with a lifting device.
  • the carrier device can in particular be designed to be mobile with an undercarriage, in particular a crawler chassis, and an upper carriage rotatably mounted thereon.
  • a mast or a cantilever arm can be provided on the superstructure.
  • a cable suspension or a rigid guide rod, which is adjustably guided along the mast, can be used as a lifting device.
  • the method according to the invention for creating a milled trench in the ground is characterized in that a trench wall cutter according to the invention or a trench wall milling device according to the invention is used. There can be one previously described trench wall cutter or a previously described trench wall milling device are used. In this way, the advantages described above can be achieved when carrying out the method.
  • a preferred variant of the method according to the invention is that the at least one cutting wheel is driven in rotation in a rotary device, in which ground material that has been milled off is guided by the at least one clearing plate through the passage between the housing and the clearing plate.
  • a rotary device in which ground material that has been milled off is guided by the at least one clearing plate through the passage between the housing and the clearing plate.
  • a trench wall milling device 10 according to the invention with a carrier device 12 is in figure 1 shown.
  • the carrier device 12 can have an undercarriage 14 designed as a crawler chassis, on which an upper carriage 16 can be rotatably mounted.
  • a substantially vertical mast 18 can be adjustably mounted on the superstructure 18 via a linkage mechanism 17 with actuating cylinders.
  • a guide rod 22 can extend along the mast 18 as part of a lifting device 20 extend.
  • a trench wall cutter 30 according to the invention is attached to the lower end of the guide rod 22 and is described in more detail below.
  • the guide rod 22 can be moved vertically along the mast 18 as part of the lifting device 20 via movable carriages 24 that can be connected to the guide rod 22 via clamping cylinders.
  • the trench wall cutter 30 shown has two pairs of cutting wheels 40 which are arranged parallel to one another with horizontally arranged axes of rotation. On the outer circumference of the cutting wheels 40 indicated cutting teeth 44 are attached in a basically known manner.
  • the construction of a possible trench wall cutter 30 according to the invention is exemplified in connection with Figures 2 to 4 explained in more detail.
  • the trench wall cutter 30 is shown in a highly schematic manner, with cutting teeth in particular not being shown in detail for reasons of clarity, but ring-shaped paths 45 or circumferential rows along which the cutting teeth of a circumferential row on the circumference of a cutting wheel 40 move when the drive rotates.
  • the cutting teeth can be arranged on plate-shaped cutting tooth holders, also not shown, and can thus be connected to a cylindrical hub 42 of the cutting wheel 40 .
  • a hub motor for rotating the cutting wheel 40 can be arranged inside the hub 42 .
  • the tracks 45 or circumferential rows of cutting teeth on each cutting wheel 40 are axially spaced from one another leaving a circumferential clearance 46 therebetween.
  • three orbits 45 or circumferential rows are provided on each cutting wheel 40 with two circumferential clearances 46 in between.
  • a clearing plate 50 can engage in each of these circumferential free spaces 46 and can reach close to the outer circumference of the central hub 42 .
  • the clearing plates 50 are attached to a plate holder 60 on their outside radially outside of the tracks 45 of the cutting teeth and are stationary relative to the rotating cutting wheel 40 .
  • a plate holder 60 can be provided for each cutting wheel 40 .
  • Each pair of cutting wheels 40 can be mounted on a plate-shaped bearing plate 34 lying between the cutting wheels 40, which is on an underside in each case of a box-shaped housing 32 is attached.
  • the respective plate holders 60 for the clearing plates 50 can also be attached to the bearing plate 34 for each pair of cutting wheels 40 .
  • the plate holders 60 have a holding shaft 62 flanged to the bearing plate 34 .
  • a holding block 64 can be fastened to the holding shaft 62, to which the clearing plates 50 for each cutting wheel 50 can be detachably fastened, preferably via screw connections.
  • the plate holders 60 which preferably extend essentially parallel to the axes of rotation of the cutting wheels 40, are arranged at a distance from the box-shaped housing 32 of the trench wall cutter 30 in such a way that a free space or passage 70 is formed between the respective plate holder 60 and the housing 32. how about out figure 3 can be seen.
  • a first feed device 56 for feeding a settable suspension into the area between the cutting wheels 40 can be provided centrally between the two plate-shaped end shields 34 on the underside of the housing 32 .
  • one or more feed devices can be provided in tubular holding shafts 62 .
  • the cutting wheels 40 can be driven in rotation via a drive device, not shown in detail, which in the exemplary embodiment shown can be in particular hub motors in the hubs 42 of the cutting wheels 40, so that they each turn inwards. This is shown in the figure 5 indicated with arrows indicating the direction of rotation.
  • the outer edges of the clearing plates 50 can be designed correspondingly inclined inwards, so that an upward flow of the milled soil material and suspension through the passage 70 between the plate holder 60 and the housing 32 is supported. In this way, especially when milling rocky or stony soil layers, larger rocks can also be efficiently removed from the area of the milling wheels 40 and up past the housing 32, thereby reducing the risk of damage to the clearing plates 50 and milling teeth.
EP22159510.1A 2022-03-01 2022-03-01 Fraise à parois moulées et procédé de réalisation d'une tranchée dans le sol Pending EP4239130A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP22159510.1A EP4239130A1 (fr) 2022-03-01 2022-03-01 Fraise à parois moulées et procédé de réalisation d'une tranchée dans le sol
PCT/EP2023/053162 WO2023165796A1 (fr) 2022-03-01 2023-02-09 Dispositif de coupe de paroi de diaphragme et procédé de production d'une tranchée dans le sol

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP22159510.1A EP4239130A1 (fr) 2022-03-01 2022-03-01 Fraise à parois moulées et procédé de réalisation d'une tranchée dans le sol

Publications (1)

Publication Number Publication Date
EP4239130A1 true EP4239130A1 (fr) 2023-09-06

Family

ID=80623598

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22159510.1A Pending EP4239130A1 (fr) 2022-03-01 2022-03-01 Fraise à parois moulées et procédé de réalisation d'une tranchée dans le sol

Country Status (2)

Country Link
EP (1) EP4239130A1 (fr)
WO (1) WO2023165796A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1452645A1 (fr) 2003-02-27 2004-09-01 BAUER Maschinen GmbH Procédé pour creuser des tranchées dans le sol et fraiseuse à rideau souterrain
EP3296468A1 (fr) * 2016-09-15 2018-03-21 BAUER Maschinen GmbH Procédé et fraiseuse à rideau souterrain pour réaliser une tranchée dans le sol
EP3543408A1 (fr) * 2018-03-21 2019-09-25 BAUER Spezialtiefbau GmbH Engin de fraisage pour creuser des tranchées dans le sol et procédé de creusage des tranchées dans le sol

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1452645A1 (fr) 2003-02-27 2004-09-01 BAUER Maschinen GmbH Procédé pour creuser des tranchées dans le sol et fraiseuse à rideau souterrain
EP3296468A1 (fr) * 2016-09-15 2018-03-21 BAUER Maschinen GmbH Procédé et fraiseuse à rideau souterrain pour réaliser une tranchée dans le sol
EP3543408A1 (fr) * 2018-03-21 2019-09-25 BAUER Spezialtiefbau GmbH Engin de fraisage pour creuser des tranchées dans le sol et procédé de creusage des tranchées dans le sol

Also Published As

Publication number Publication date
WO2023165796A1 (fr) 2023-09-07

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