EP4311882B1 - Fraise pour parois moulées et procédé de formation d'une fente fraisée dans le sol - Google Patents

Fraise pour parois moulées et procédé de formation d'une fente fraisée dans le sol Download PDF

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Publication number
EP4311882B1
EP4311882B1 EP22187410.0A EP22187410A EP4311882B1 EP 4311882 B1 EP4311882 B1 EP 4311882B1 EP 22187410 A EP22187410 A EP 22187410A EP 4311882 B1 EP4311882 B1 EP 4311882B1
Authority
EP
European Patent Office
Prior art keywords
cutter
trench
conveyor box
bearing shield
tooth
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
EP22187410.0A
Other languages
German (de)
English (en)
Other versions
EP4311882A1 (fr
Inventor
Kristina HEINDL
Johannes Herb
Sebastian Soier
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 EP22187410.0A priority Critical patent/EP4311882B1/fr
Priority to US18/355,205 priority patent/US20240035252A1/en
Publication of EP4311882A1 publication Critical patent/EP4311882A1/fr
Application granted granted Critical
Publication of EP4311882B1 publication Critical patent/EP4311882B1/fr
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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
    • E02F5/00—Dredgers or soil-shifting machines for special purposes
    • E02F5/02—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches
    • E02F5/08—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches with digging wheels turning round an axis
    • 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
    • E02F3/245—Digging wheels; Digging elements of wheels; Drives for wheels with digging elements mounted movable relative to the wheel
    • 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
    • E02F3/88—Dredgers; Soil-shifting machines mechanically-driven with arrangements acting by a sucking or forcing effect, e.g. suction dredgers
    • E02F3/90—Component parts, e.g. arrangement or adaptation of pumps
    • E02F3/92—Digging elements, e.g. suction heads
    • E02F3/9212—Mechanical digging means, e.g. suction wheels, i.e. wheel with a suction inlet attached behind the wheel
    • E02F3/9225—Mechanical digging means, e.g. suction wheels, i.e. wheel with a suction inlet attached behind the wheel with rotating cutting elements
    • E02F3/9231—Suction wheels with axis of rotation parallel to longitudinal axis of the suction pipe
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F5/00—Dredgers or soil-shifting machines for special purposes
    • E02F5/02—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches
    • E02F5/14—Component parts for trench excavators, e.g. indicating devices travelling gear chassis, supports, skids
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/28—Small metalwork for digging elements, e.g. teeth scraper bits
    • E02F9/2808—Teeth
    • E02F9/2858—Teeth characterised by shape
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/28—Small metalwork for digging elements, e.g. teeth scraper bits
    • E02F9/2866—Small metalwork for digging elements, e.g. teeth scraper bits for rotating digging elements

Definitions

  • the invention relates to a trench wall cutter with a cutter frame, at least one rotary-driven cutter wheel, which is provided with cutter teeth on its circumference, at least one bearing plate, which is arranged on the underside of the cutter frame and is designed to support the at least one cutter wheel, at least one conveyor box, which has at least one opening for conveying removed soil material and/or for supplying suspension and is arranged in the region of the at least one bearing plate, wherein the at least one cutter wheel has at least one folding tooth on its side facing the bearing plate, which can be adjusted between an unfolded position in which the folding tooth removes soil material below the bearing plate, and a folded-in position for passing by the bearing plate, according to the preamble of claim 1.
  • the invention further relates to a method for forming a milling slot in the ground according to the preamble of claim 13.
  • trench wall cutters originate from the EP 1 548 192 B1 or the EP 0 291 027 B1
  • the problem with trench wall cutters with cutting wheels arranged on the side of a bearing plate is that soil areas directly below and next to the bearing plate cannot be easily removed by the cutting wheels.
  • so-called folding teeth are arranged on the side of the cutting wheels that borders the bearing plate.
  • the folding teeth can be folded out into an area next to and below the bearing plate, for example by means of a cam control, in order to to work on an area of soil underneath, while as the milling wheel continues to rotate the folding teeth are folded in again so that the bearing plate is not damaged by the milling teeth.
  • trench wall cutters to arrange a so-called suction box in the area of the bearing plate, preferably between two adjacent bearing plates. Milled soil material together with the surrounding suspension can be sucked in via the suction box directly in the area of the cutter wheels and transported upwards out of the cutter slot.
  • the removed soil material can alternatively remain in the milling slot, whereby suspension can be fed into the area of the milling wheels via a feed device.
  • a so-called soil mortar can be created in situ in the milling slot using the removed soil material and a fed-in cement suspension.
  • the soil mortar can remain in the slot and harden to form a so-called trench wall.
  • the suction box or a corresponding feed device which are collectively referred to below as the conveyor box, should be arranged as close as possible to the milling wheels for good functionality. On the one hand, this allows for reliable suction of removed soil material or reliable, effective injection of suspension into the area of the milling wheels. On the other hand, the milling teeth can run close to the conveyor box with the at least one opening, so that the at least one opening on the conveyor box is kept clear by the milling teeth and the risk of clogging by removed soil material is reduced.
  • the folding teeth cannot protrude radially further than the fixed milling teeth on the adjacent circumference of the milling wheel when passing the conveyor box. This limits the length of the folding tooth.
  • the folding tooth on the milling wheel must be arranged and designed in such a way that it protrudes at a relatively flat angle towards the bearing plate in order to remove the soil material below the milling shield. This is unfavorable in terms of the load on the folding tooth.
  • such a position with a flat angle means that a relatively strong web of material remains on the ground below the milling blade.
  • the web of material can also extend along the side over the entire depth of the milling slot. This represents an impairment and weakening of the diaphragm wall element created in the ground.
  • the invention is based on the object of specifying a trench cutter and a method with which a particularly efficient creation of a trench in the ground is possible.
  • the trench wall cutter according to the invention is characterized in that a conveyor side facing the cutting wheel is provided on the conveyor box with at least one opening, past which the cutting teeth and the at least one folding tooth run past with little or no clearance, with a recess being formed on the conveyor side for the at least one folding tooth to run past.
  • the invention is based on the finding that an improvement in the creation of a milling slot is achieved by having the folding tooth protrude at the steepest possible angle relative to a center plane of the bearing plate or a direction of advance. The smaller this angle is in relation to a center plane of the bearing plate, the smaller the remaining material web on the ground beneath the milling plate.
  • the angle of attack of the folding tooth in the unfolded position can become smaller the longer the folding tooth is.
  • the length of the folding tooth is limited by the need to pass an adjacent conveyor box.
  • the conveyor box for the passage of the fixed milling teeth on the one hand and the at least one folding tooth on the other hand is not designed in the same way. Rather, a recess is formed on the conveyor box for the passage of the at least one folding tooth opposite the adjacent areas of the conveyor box which are intended for the passage of the fixed milling teeth.
  • This recess makes it possible to provide a longer folding tooth so that it can remove the soil material below the milling shield at a steeper angle and at the same time reliably move past the conveyor box.
  • the fixed milling teeth and also the at least one folding tooth can move past the conveyor box at a small distance or even with slight contact of the teeth with the conveyor box so that the teeth can help to keep the at least one opening on the conveyor box clear.
  • a preferred embodiment of the invention consists in that the at least one folding tooth protrudes radially relative to fixed milling teeth when it passes the conveyor side of the conveyor box.
  • the folding tooth protrudes radially relative to the adjacent or even all fixed milling teeth.
  • the extent of the radial protrusion corresponds to the depth of the recess on the conveyor side of the conveyor box.
  • it can pass the conveyor box in a folded-in position, an unfolded position or an intermediate position.
  • the bearing plate is plate-shaped and that a cutting wheel is mounted on each side of the bearing plate to form a pair of cutting wheels. This allows a substantially symmetrical load to be achieved on the bearing plate. This is advantageous for the service life of the trench wall cutter.
  • a particularly efficient trench wall cutter is achieved according to a further development of the invention by arranging two bearing plates, each with a pair of cutter wheels, on the underside of the cutter frame. With such an arrangement of A total of four milling wheels, which are arranged in pairs, can be used to create slots with an approximately rectangular cross-section in the ground.
  • the at least one milling box is arranged centrally between two bearing plates.
  • the conveyor box which can be designed as a suction box and/or as a feed device, can thus be arranged in a central position to the total of four milling wheels. This allows efficient removal of milled soil material or efficient supply of suspension when the conveyor box is used, for example, for a CSM TM process for producing a soil mortar in situ in the milling slot.
  • the conveyor box is connected to a suction pump for removing removed soil material via a suction line. Removed soil material in the area of the milling wheels can thus be sucked in via the conveyor box and conveyed upwards out of the milling slot.
  • the suction pump can preferably be arranged directly on the milling frame and/or on the ground surface.
  • the trench wall cutter can thus be manufactured in particular for a two-stage process for creating a milling slot in the ground, wherein in a first stage the slot is created using a supporting liquid, which is then replaced in a second stage by a hardenable mass.
  • the milled soil material can be processed on the ground surface in a processing plant and then at least partially returned to the milling slot to form the hardenable mass.
  • the conveyor box is connected via a feed line to a feed device for feeding a suspension.
  • the feed device can inject suspension into the area of the milling wheels, in particular under pressure.
  • a suspension can be fed in order to process removed soil material directly in situ in the milling slot to form a soil mortar.
  • the soil mortar can then remain in the soil to form a diaphragm wall.
  • the feed device can have an injection pump.
  • the conveyor box can only have a rudimentary box shape. wherein one or more openings can be designed as a nozzle opening for a targeted injection of the suspension under pressure.
  • the conveyor box can have almost any shape.
  • the conveyor box when used to suck away milled soil material, according to one embodiment of the invention it is preferred that the conveyor box has a wedge-shaped, downward-facing section with wedge surfaces which form the conveyor side on both sides with at least one opening each.
  • the conveyor box can thus have a downward-facing wedge structure, with at least one opening, preferably for sucking away soil material, being formed on each of the two wedge surfaces angled towards each other.
  • the openings thus face the respective milling wheels and can ensure that the removed soil material is effectively conveyed away or that a suspension is injected specifically into the area of the milling wheels.
  • the conveying side it is particularly expedient that several openings are provided on the conveying side.
  • several openings can be provided on each wedge surface in particular. This allows for particularly efficient conveying and feeding.
  • a particularly robust design of the trench wall cutter is achieved according to one embodiment in that at least one wear plate is arranged on the conveyor side and in that the wear plate has a reduced thickness in the area of the recess or is omitted in this area to form the recess.
  • the wear plate can be attached to the conveyor box in a substantially detachable manner, in particular by means of separable weld seams.
  • the recess can be achieved in a particularly simple manner in that the wear plate is omitted for the folding tooth to pass the conveyor box along the path.
  • the wear plate can be thinned in this area or a thinner wear plate can be used.
  • a further advantageous embodiment of the invention is that when a pair of cutting wheels is arranged on a bearing plate, a common recess is formed on the conveyor side of the conveyor box for the folding teeth of the two cutting wheels.
  • a central conveyor box can thus be provided on the trench wall cutter. be provided, with a continuous recess being provided approximately in a central area of the conveyor box on each conveyor side. This continuous recess can be used both by the folding tooth on one side of the bearing plate and by the opposite folding tooth on the other side of the bearing plate.
  • the trench wall cutter can basically be newly constructed or an existing trench wall cutter can be converted according to the invention. If a corresponding recess is provided on a conveyor box, the folding tooth can then be made correspondingly longer. According to one embodiment of the invention, it is particularly advantageous that the at least one folding tooth in its unfolded position has an angle of less than or equal to 45° with respect to a center plane of the bearing plate.
  • the arrangement according to the invention allows the folding tooth to be extended, thus achieving improved removal of soil material directly beneath the bearing plate.
  • the steeper or smaller the angle of the folding tooth is in its unfolded position the better the soil removal is.
  • the length of the folding tooth must always be designed in such a way that the folding tooth in its unfolded position reaches at least to a central plane of the bearing plate, so that an area of soil underneath can be reliably processed from both sides of a pair of cutting wheels.
  • the invention also includes a method for forming a milled slot in the ground, wherein the method is characterized in that at least one of the previously described trench wall cutters according to the invention is used.
  • the previously described advantages when creating a milled slot in the ground can be achieved.
  • the method can also be used in particular for forming a trench wall, wherein a hardenable mass is introduced or formed within the milled slot formed to create the trench wall.
  • FIGS. 1 and 2 show a schematic representation of a trench wall cutter 10 according to the invention with a cutter frame 12, which is only indicated very schematically, on the underside of which two bearing plates 14 are arranged next to one another.
  • a cutting wheel 30 can be rotatably mounted on each side of each plate-shaped bearing plate 14.
  • the cutting wheels 30 are driven in rotation to remove soil material via a drive device (not shown), which can each comprise a hub motor within the cutting wheels 30 or a drive motor on the cutter frame 12 with a gear arrangement in the bearing plate 14.
  • Fixed cutting teeth (not shown) are arranged on the outer circumference of the cutting wheels 30 in a basically known manner.
  • a conveyor box 20, preferably directed parallel to the axes of the milling wheels 30, can be arranged on the underside of the milling frame 12 between the two bearing plates 14.
  • the conveyor box 20 has a base body 22 with a downwardly directed wedge-shaped section 23.
  • a conveyor side 24 with openings 28 can be arranged on the wedge surfaces of the wedge-shaped section 23.
  • the conveyor box 20 can be designed as a suction box, which can be connected to a suction pump (not shown) on the milling frame 12. Through the openings 28, removed soil material with surrounding liquid is sucked into the openings 28 and transported upwards through the milling frame 12.
  • a recess 26 is formed on the conveyor sides 24 of the conveyor box 20 for folding teeth 40 to pass by the cutting wheels 30.
  • the recess 26 is formed by applying a wear plate 25 to the remaining areas of the conveyor side 24, which is omitted in the area of the recess 26.
  • the folding teeth 40 on the milling wheels 30 are designed such that they protrude into the area of the recess 26 on the conveyor box 20.
  • the folding teeth 40 can be designed with such a length that they run past the conveyor box 20 at the base of the recess 26 at a small distance, which is preferably less than the thickness of the wear plate 25, or in particular they lightly contact and scratch it.
  • the openings 28 in the area of the recess 26 can be kept free from clogging, for example by rock material, by the folding teeth 40.
  • the conveyor teeth on the milling wheels 30 (not shown) can be designed with a corresponding fixed length so that they run past the protruding wear plates 25 at a corresponding small distance or even lightly contact and scratch them.
  • FIG. 4 the folding tooth 40, which can be accommodated in a tooth holder 42 which is pivotably mounted on the cutting wheel 30 about a pivot axis 32, is shown in a folded-in position in which the folding tooth 40 is aligned and spaced from the bearing plate 14. In this folded-in position, the folding tooth 40 can easily contact the bottom of the recess 26 on the conveyor box 20 when the cutting wheels 30 rotate in order to keep the opening 28 free in the area of the recess 26.
  • the folding tooth 40 can be formed with a greater length.
  • a folding tooth designed according to the invention is shown in its unfolded position on the cutting wheel 30, wherein the folding tooth 40 below the bearing plate 14 soil material and forms an angle a with respect to a central plane 16 of the bearing plate 14.
  • a material web 7 remains below the bearing plate 14 at the milling base 5 of the base 3. This also extends over the milling cross-section into the side wall of the milling slot.
  • the folding tooth 40 should be in its unfolded position according to Figure 5 at least up to the center plane 16 of the bearing plate 14, since the opposite bottom area is covered by the folding tooth 40 of the opposite cutting wheel 30, which is in Figure 5 is not shown, is removed.
  • FIG. 6 This is clearly shown in comparison to the schematic representation of a conventional trench cutter according to Figure 6 .
  • the representation according to Figure 6 basically corresponds to the representation of Figure 5 , although a conventional folding tooth 40 is shorter.
  • the material web 7 remaining on the milling base 5 is correspondingly larger and more solid in a conventional trench wall cutter.

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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)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Bulkheads Adapted To Foundation Construction (AREA)

Claims (13)

  1. Fraise pour parois moulées avec
    - un cadre de fraisage (12),
    - au moins une roue de fraisage (30) pouvant être entraînée en rotation qui présente au niveau de sa périphérie extérieure des dents de fraise pour l'enlèvement de matériau de sol,
    - au moins un flasque (14) qui est agencé au niveau du côté inférieur du cadre de fraisage (12) et est réalisé pour le logement de l'au moins une roue de fraisage (30),
    - au moins une caisse de transport (20) qui présente au moins une ouverture (28) pour l'évacuation de matériau de sol enlevé et/ou pour l'amenée d'une suspension et est agencée dans la zone de l'au moins un flasque (14),
    - dans laquelle l'au moins une roue de fraisage (30) présente au niveau de son côté tourné vers le flasque (14) au moins une dent escamotable (40) qui peut être déplacée entre une position dépliée, dans laquelle la dent escamotable (40) enlève du matériau de sol en dessous du flasque (14), et une position repliée pour le passage devant le flasque (14),
    caractérisée en ce que
    un côté de transport (24) tourné vers la roue de fraisage (30) est prévu avec l'au moins une ouverture (28) au niveau de la caisse de transport (20), devant lequel les dents de fraise et l'au moins une dent escamotable (40) passent sans espacement ou à faible distance, dans laquelle une cavité (26) est réalisée au niveau du côté de transport (24) par rapport aux zones contiguës, pour le passage sur le devant de l'au moins une dent escamotable (40).
  2. Fraise pour parois moulées selon la revendication 1,
    caractérisée en ce que
    l'au moins une dent escamotable (40) dépasse lors d'un passage devant le côté de transport (24) de la caisse de transport (20) radialement par rapport aux dents de fraises fixes.
  3. Fraise pour parois moulées selon la revendication 1 ou 2,
    caractérisée en ce que
    le flasque (14) est réalisé en forme de plaque et
    une roue de fraisage (30) est logée au niveau de chaque côté du flasque (14) pour la formation d'une paire de roues de fraisage.
  4. Fraise pour parois moulées selon la revendication 3,
    caractérisée en ce que
    deux flasques (14) sont agencés au niveau du côté inférieur du cadre de fraisage (12) avec chaque fois une paire de roues de fraisage (40).
  5. Fraise pour parois moulées selon l'une quelconque des revendications 1 à 4,
    caractérisée en ce que
    l'au moins une caisse de transport (20) est agencée au milieu entre deux flasques (14).
  6. Fraise pour parois moulées selon l'une quelconque des revendications 1 à 5,
    caractérisée en ce que
    la caisse de transport (20) est reliée, par le biais d'une conduite d'aspiration, à une pompe d'aspiration pour l'évacuation de matériau de sol enlevé.
  7. Fraise pour parois moulées selon l'une quelconque des revendications 1 à 6,
    caractérisée en ce que
    la caisse de transport (20) est reliée par le biais d'une conduite d'amenée à un dispositif d'amenée pour l'amenée d'une suspension.
  8. Fraise pour parois moulées selon l'une quelconque des revendications 1 à 7,
    caractérisée en ce que
    la caisse de transport (20) présente une section (23) en forme de coin, dirigée vers le bas avec des surfaces de coin qui forment des deux côtés le côté de transport (24) avec respectivement au moins une ouverture (28).
  9. Fraise pour parois moulées selon l'une quelconque des revendications 1 à 8, caractérisée en ce que
    plusieurs ouvertures (28) sont prévues au niveau du côté de transport (24).
  10. Fraise pour parois moulées selon l'une quelconque des revendications 1 à 9, caractérisée en ce que
    au moins une plaque d'usure (25) est agencée au niveau du côté de transport (24) et pour la formation de la cavité (26), la plaque d'usure (25) présente dans la zone de la cavité (26) une réduction d'épaisseur ou est omise dans cette zone.
  11. Fraise pour parois moulées selon l'une quelconque des revendications 1 à 10, caractérisée en ce que
    pour la configuration avec une paire de roues de fraisage (30) au niveau d'un flasque (14), une cavité commune (26) est réalisée au niveau du côté de transport (24) de la caisse de transport (20) pour les dents escamotables (40) des deux roues de fraisage (30).
  12. Fraise pour parois moulées selon l'une quelconque des revendications 1 à 11, caractérisée en ce que
    l'au moins une dent escamotable (40) présente, dans sa position dépliée, un angle inférieur ou égal à 45° par rapport à un plan médian du flasque (14).
  13. Procédé de formation de paroi moulée dans le sol (3),
    caractérisée en ce que
    une fraise pour parois moulées (10) est utilisée selon l'une quelconque des revendications 1 à 12.
EP22187410.0A 2022-07-28 2022-07-28 Fraise pour parois moulées et procédé de formation d'une fente fraisée dans le sol Active EP4311882B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP22187410.0A EP4311882B1 (fr) 2022-07-28 2022-07-28 Fraise pour parois moulées et procédé de formation d'une fente fraisée dans le sol
US18/355,205 US20240035252A1 (en) 2022-07-28 2023-07-19 Trench cutter and method for forming a cut trench in the ground

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP22187410.0A EP4311882B1 (fr) 2022-07-28 2022-07-28 Fraise pour parois moulées et procédé de formation d'une fente fraisée dans le sol

Publications (2)

Publication Number Publication Date
EP4311882A1 EP4311882A1 (fr) 2024-01-31
EP4311882B1 true EP4311882B1 (fr) 2024-08-28

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Application Number Title Priority Date Filing Date
EP22187410.0A Active EP4311882B1 (fr) 2022-07-28 2022-07-28 Fraise pour parois moulées et procédé de formation d'une fente fraisée dans le sol

Country Status (2)

Country Link
US (1) US20240035252A1 (fr)
EP (1) EP4311882B1 (fr)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3715977A1 (de) 1987-05-13 1988-12-01 Bauer Spezialtiefbau Raeumvorrichtung
DE10360910B3 (de) * 2003-12-23 2005-09-15 Bauer Maschinen Gmbh Klappzahn
ES2342847T3 (es) * 2007-08-23 2010-07-15 Bauer Maschinen Gmbh Dispositivo de fresa para la mecanizacion del suelo.
DE102019135781A1 (de) * 2019-12-23 2021-06-24 Marcus Burg Klappzahn für ein Fräsrad

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US20240035252A1 (en) 2024-02-01
EP4311882A1 (fr) 2024-01-31

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