EP3556942B1 - Foreuse pour faire une mur de diaphragma et procedé pour faire une mur de diaphragma - Google Patents

Foreuse pour faire une mur de diaphragma et procedé pour faire une mur de diaphragma Download PDF

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Publication number
EP3556942B1
EP3556942B1 EP18167973.9A EP18167973A EP3556942B1 EP 3556942 B1 EP3556942 B1 EP 3556942B1 EP 18167973 A EP18167973 A EP 18167973A EP 3556942 B1 EP3556942 B1 EP 3556942B1
Authority
EP
European Patent Office
Prior art keywords
flushing
cutting
milling
discharge
trench
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.)
Not-in-force
Application number
EP18167973.9A
Other languages
German (de)
English (en)
Other versions
EP3556942A1 (fr
Inventor
Dieter Stetter
Sebastian Christoph BAUER
Leonhard Weixler
Ulli Wiedenmann
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 EP18167973.9A priority Critical patent/EP3556942B1/fr
Priority to US16/383,708 priority patent/US11286637B2/en
Priority to JP2019078628A priority patent/JP6725722B2/ja
Priority to KR1020190045178A priority patent/KR102311859B1/ko
Priority to CN201910312717.2A priority patent/CN110387918B/zh
Publication of EP3556942A1 publication Critical patent/EP3556942A1/fr
Application granted granted Critical
Publication of EP3556942B1 publication Critical patent/EP3556942B1/fr
Not-in-force 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
    • E02F3/22—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
    • 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
    • E02F3/08—Dredgers; Soil-shifting machines mechanically-driven with digging elements on an endless chain
    • E02F3/10—Dredgers; Soil-shifting machines mechanically-driven with digging elements on an endless chain with tools that only loosen the material, i.e. with cutter-type chains
    • 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
    • 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

Definitions

  • the invention relates to a trench wall cutter for creating a milling slot in the ground with a milling frame, at least one pair of milling wheels which are rotatably mounted and driven on the milling frame, each milling wheel having a plurality of milling teeth along its outer circumference, and a discharge device with at least one discharge pump for discharging a milling fluid from the milling slot in the area of the milling wheels, according to the preamble of claim 1.
  • the invention relates to a method for creating a milling slot in the ground with such a trench cutter, the milling wheels being driven in rotation in a milling operation and the trench cutter being sunk into the ground and ground material being milled, the milling slot being created in the ground, in accordance with the preamble of Claim 11.
  • trench wall cutters are used to create so-called trench walls or sealing walls, which are required for securing or sealing construction pits, for example.
  • a first milling slot is created, which is filled with a hardenable mass. This mass cures to form a diaphragm wall segment.
  • a diaphragm wall of the desired size can be created.
  • From the EP 1 452 645 A1 shows a trench cutter to create a trench wall in the floor.
  • a feed device opens between the two pairs of milling wheels, by means of which a settable liquid can be introduced into the milling slot in the area between the milling wheels.
  • the supplied settable liquid is mixed by the rotary movement of the milling wheels with the milled soil material to form a hardenable mass, which then harden to form the diaphragm wall segment can.
  • the milled soil material is mixed directly in situ in the milling slot to form the hardenable mass.
  • FIG DE 41 41 629 A1 forth Another method for producing a diaphragm wall segment in the floor is shown in FIG DE 41 41 629 A1 forth.
  • a discharge device is provided between the cutter wheels, by means of which the milled soil material is sucked off immediately afterwards with the supporting liquid in the cutter slot.
  • the suctioned-off suspension can be stripped of soil material in a separating device and returned to an upper area of the milling slot.
  • the suspension can be prepared in such a way that it constitutes a hardenable mass which hardens in the milling slot to form the slot wall segment.
  • the invention has for its object to provide a trench wall cutter and a method for creating a milling slot in the ground, with which a milling slot can be produced particularly efficiently.
  • the trench wall cutter according to the invention is characterized in that a switchover device is provided, which is designed to switch the discharge device into a rinsing mode, in which a liquid flow generated by at least one discharge pump of the discharge device is generated on at least one milling wheel for flushing the milling wheel.
  • a basic idea of the invention is to use the discharge device for removing the milling fluid, i.e. the milled soil material with the surrounding supporting fluid, at least partially for generating a fluid flow which is directed towards one, preferably all milling wheels in order to rinse them free of adhering soil material .
  • a switchover device is provided with which the discharge device can be switched over to a rinsing operation.
  • a preferred embodiment of the invention consists in that at least one discharge pump is designed as an adjustable pump, which can be adjusted from a milling operation, in which the discharge pump sucks milling liquid from the cutting wheels, into the flushing operation, in which the discharge pump reverses liquid to the Promotes milling wheels.
  • the adjustable pump is also referred to as a so-called swivel pump, which can reverse the direction of delivery.
  • the switchover device is essentially an electrical or electronic control device for changing the pump setting. This embodiment is structurally particularly simple.
  • the discharge device has a discharge line which extends from the at least one discharge pump extends above, and that the switching device comprises a control valve on the discharge line, with the control valve opening a suction opening on the discharge line.
  • the control valve first ensures that the discharge line is blocked at the top and that material that has already been conveyed upwards is not conveyed back downwards from the discharge line.
  • the discharge line is used primarily to pump up the milled soil material together with the supporting liquid as a suspension, in particular over days, whereby the milling liquid can be filtered and processed and then returned to the slot.
  • an intake opening is formed above the discharge pump with the control valve.
  • milling fluid in the slot which is not or only barely mixed with milled soil material, can be sucked in and conveyed to the milling wheels by the switched-over discharge pump. In this way, the pump is protected.
  • a suction element of the discharge device is arranged in the middle between the two milling wheels, and that liquid flows out of the suction element in the direction of the milling wheels in the flushing mode.
  • the milling wheels are preferably rotatably mounted about a common axis of rotation.
  • the axis of rotation is in particular arranged horizontally in milling operation.
  • the axes of rotation of the two pairs are arranged in parallel or in the same axis.
  • the discharge device is arranged in the middle between the two milling wheels, so that the milling fluid can be removed in the middle and then fed in the middle in the rinsing mode.
  • a further preferred embodiment variant of the invention consists in that a flush line arrangement with at least one flush outlet is provided for flushing the at least one milling wheel.
  • a special flushing line arrangement with at least one flushing outlet is therefore provided in addition to or instead of the existing discharge line.
  • At least one rinsing outlet preferably a plurality of rinsing outlets, are preferably provided on all milling wheels. In this way, there is no need or no central inflow when flushing via the switched-over suction element. Rather, a flush line arrangement with a specific number of flush outlets can be provided in a targeted manner.
  • the switchover device comprises a switchover valve which connects a discharge line of the discharge device to the flushing line arrangement in the flushing operation.
  • the discharge pump can maintain its normal conveying direction of the milling operation.
  • the changeover valve Through the changeover valve, the upward flow in the discharge device can be deflected into the flushing line arrangement, which then directs the liquid flow downward.
  • a particularly good rinsing performance is achieved according to a development of the invention in that at least one second pump is provided which in the rinsing mode conveys liquid via the rinsing line arrangement to the at least one milling wheel.
  • the at least one second pump or a plurality of pumps can be used to generate a particularly intensive rinsing flow, with which particularly reliably adhering soil material is rinsed free of the milling wheels.
  • a particularly advantageous embodiment variant is achieved in that the second pump is connected to the discharge line and in the milling operation conveys up milling fluid and that in the flushing operation the second pump is connected to the flushing line arrangement via an adjustment valve of the switching device.
  • the second pump can support the removal of milled soil material upwards through the discharge line.
  • the second pump can be used specifically for flushing, this being achieved by means of a corresponding adjustable or swiveling pump or solely by means of an adjustment valve.
  • a particularly good flushing is also achieved according to a development of the invention in that a plurality of flushing outlets are provided, which are arranged in a fan shape in the region of the at least one milling wheel.
  • milling wheels are used in which the milling teeth are arranged in axially offset annular rows of milling teeth on the outer circumference of a milling wheel. Annular spaces are formed between the annular rows of milling teeth, into which the nozzle-like rinsing outlets are directed.
  • the rinsing outlets can have one or more nozzle openings, so that targeted nozzle jets on the milling teeth and in particular the gaps can be directed between the rows of milling teeth.
  • a large number of flushing outlets can be provided in a fan-like manner in accordance with the number of annular spaces.
  • the flushing outlets can be fixed.
  • the at least one rinsing outlet is designed as an adjustable nozzle.
  • a ball nozzle can be provided, which can be clamped in a set position by means of a corresponding union nut.
  • the method according to the invention is characterized in that, in a flushing operation, the trench wall cutter is raised and the cutting wheels are spaced apart from a cutting base of the floor and that in the raised position of the cutting wheels a flow of liquid is generated in the direction of the cutting wheels for flushing.
  • the method can in particular be carried out with the trench wall cutter according to the invention described above. The advantages described above can be achieved.
  • the cutter is raised to interrupt the milling operation and thereby spaced from the milling base. This means that the milling operation is interrupted. Subsequently, in the rinsing mode, in particular in the case of milling wheels rotating further, the liquid flow in the direction of the milling wheels can be generated, as a result of which the milling wheels are rinsed free of adhering soil material.
  • a rope or a rod is attached to an upper end of the trench cutter, with which the trench cutter is suspended on a carrier device and adjusted vertically. This enables an efficient lifting movement of the trench cutter.
  • an injection pressure and / or an injection quantity of the liquid to be flushed out of the cutting wheels by means of a control device in the flushing operation.
  • the flushing can be effected in particular with an increased pressure which is between 2 bar and 40 bar. In principle, higher pressures can also be set depending on the soil material to be milled. By adjusting the injection pressure and / or the injection quantity, the milling wheels can be cleaned in the most efficient manner.
  • the result of the flushing can be determined and checked by means of the control device by determining the change in the drive power required for the milling wheels.
  • the control device can also transmit free drive power of the cutting wheels to the at least one pump in the flushing mode.
  • the Fig. 1 shows an overall view of a trench cutter 10 according to the invention with a box-like milling frame 12, at the lower end of which two pairs of milling wheels 14 are arranged.
  • the milling wheels 14 are rotating via a not shown Drive motor can be driven to rotate around horizontal axes of rotation that are parallel to one another.
  • detachable milling teeth 16 are arranged in a known manner via plate-shaped holders, with which soil material present in the slot base can be milled off during milling operation.
  • the milling slot is filled with a support liquid, which in Fig. 1 is not shown.
  • the milled soil material is sucked off together with the surrounding supporting liquid as milling liquid via a suction element 24 of a discharge device 20 arranged centrally between the milling wheels 14.
  • the suction element 24 is connected via a lower discharge line 26a to a discharge pump 22 of the discharge device 20 arranged on the frame.
  • the discharge pump 22 generates the suction pressure for sucking in the milling fluid.
  • the sucked-in milling fluid is then removed further upward from the milling slot via the discharge pump 22 via an upper discharge line 26c.
  • the milling fluid can be prepared for days in a corresponding system, in particular de-milled from soil material.
  • the processed milling fluid can then be returned to the slot as a supporting fluid.
  • a holding device 18 is arranged at the upper end of the milling frame 20.
  • the trench wall cutter 10 can be attached to a rope or a guide rod of a carrier device (not shown in any more detail) and in particular can thereby be moved vertically.
  • Diaphragm wall milling machine 10 shown has, for example, a box-shaped milling frame 12 which is provided with lateral guide elements. This allows the trench cutter 10 to guide itself in the slot. Alternatively, the milling frame 12 can also be compact and essentially without guide elements for contact guidance. The guide then takes place via a guide rod attached to the holding device 18 from outside the milling slot via the carrier device.
  • the trench wall cutter 10 is a switching device 40 is provided, with which, in the exemplary embodiment shown, the trench wall cutter 10 can be switched from a milling operation to a flushing operation for flushing out the milling wheels 14.
  • the switching device 40 has a control valve 42 between a central discharge line 26b and the upper discharge line 26c of the discharge device 20.
  • the upper discharge line 26c located above the control valve 42 is shut off by the control valve 42 and at the same time a suction opening 44 on the control valve 42 is opened.
  • the suction opening 44 is preferably located above the discharge pump 22 in an upper region of the milling frame 12 spaced apart from the milling wheels 14.
  • the discharge pump 22 is designed as an adjustable pump, also called a swiveling pump. Simultaneously with the actuation of the control valve 42, the discharge pump 22 is changed in its delivery direction.
  • the discharge pump 22 is switched from a milling operation, in which the discharge pump 22 conveys milling liquid from the cutting wheels 14, as shown in FIG Fig. 2 is shown with arrows in a flushing operation according to Fig. 3 switched.
  • milling liquid is sucked in via the central suction element 24 with openings 25 and pumped upward via the discharge line 26.
  • the suction opening 44 is closed by the control valve 42.
  • the converted discharge pump 22 When switching to the rinsing mode according to Fig. 3 is removed by the converted discharge pump 22 through the opened suction opening 44 milling fluid from an upper region of the milling slot and conveyed via the middle discharge line 26b and the lower discharge line 26a to the cutting wheels 14.
  • the liquid exits at an adjustable pressure and an adjustable delivery rate through the openings 25 of the suction element 24 in both directions to the cutting wheels 14.
  • the setting can be made via a control device in the carrier device.
  • the trench wall cutter 10 is raised, so that the cutting wheels 14 are spaced apart from the existing slot base. If the cutting wheels 14 continue to rotate, which in particular rotate in opposite directions, so that the cutting teeth 16 move towards the suction element 24 from below, the liquid flowing out becomes adherent Soil material loosened on the outside of the cutting wheels 14.
  • the control device can be used to switch back to the milling operation, in which case the milling machine is then lowered again onto the slot base for milling off further soil material.
  • FIG. 4 A second embodiment of a trench cutter 10 according to the invention is shown. It shows Fig. 4 the trench cutter 10 in milling operation, in which the trench cutter 10 functions according to the previously described first embodiment. Soil material removed by the milling wheels 14 is sucked off by the discharge device 20 with the discharge pump 22 via the suction element 24 and conveyed upwards.
  • the delivery direction of the discharge pump 22 remains in the rinsing mode, which in FIG Fig. 5 is shown schematically, unchanged.
  • the switching device 40 has a switching valve 48.
  • the changeover valve 48 blocks the upper discharge line 26c of the discharge device 20 and connects the middle discharge line 26b to a flushing line arrangement 60.
  • the flushing line arrangement 60 has one or more flushing lines 62, which lead downward from the changeover valve 48 to the cutting wheels 14.
  • the rinsing lines 62 end in nozzle-like rinsing outlets 64, with which the milling fluid conveyed by the discharge pump 22 is directed back to the milling wheels 14 in the region of the milling teeth 16 for loosening adhering soil material.
  • a simple drainage pump 22 can continue to be used.
  • FIG Fig. 6 A third embodiment of a trench wall cutter 10 according to the invention is shown in FIG Fig. 6 shown in a flushing operation.
  • the trench cutter 10 functions in accordance with Fig. 6 like the two variants described above. Soil material removed from the cutting wheels 14 is sucked in together with the surrounding liquid via the suction element 24 by a discharge pump 22 of a discharge device 20 and discharged upward via a lower discharge line 26a via an upper discharge line 26c.
  • the discharge pump 22 In the flushing mode according to Fig. 6 the discharge pump 22 according to the first embodiment according to the Figures 1 to 3 changed in their direction of funding.
  • the discharge pump 22 is thus also designed as an adjustable or swiveling pump.
  • liquid is now flushed out of an upper region of the slot or out of the processing system itself via the discharge pump 22 and the suction element 24 in the direction of the cutting wheels 14 via the discharge line 26.
  • a second pump 30 is provided on the milling frame 12 in the third embodiment of a trench cutter 10 according to the invention.
  • this second pump 30 can additionally convey liquid in the direction of the cutting wheels 14 via a flushing line arrangement 60 with a plurality of flushing lines 62 and flushing outlets 64 and free-flowing soil material can flow out.
  • a flushing line arrangement 60 with a plurality of flushing lines 62 and flushing outlets 64 and free-flowing soil material can flow out.
  • FIGS Figures 7 and 8th A fourth embodiment of a trench cutter 10 according to the invention is shown in FIGS Figures 7 and 8th shown.
  • the trench cutter 10 is located according to FIG Fig. 7 in the milling operation, in which, similarly to the previously described embodiments, ground material milled off by the cutting wheels 14 together with liquid is sucked in via the suction element 24 by a discharge pump 22 of a discharge device 20 and upwards via a lower, middle and upper discharge line 26a, b, c is promoted.
  • a second pump 30 is connected between the middle discharge line 26b and the upper discharge line 26c via a lower additional line 28a and an adjustment valve 52 of a switching device 40 according to the invention.
  • the sucked-in milling liquid can thus be discharged not only via the discharge pump 22, but also via the second pump 30, which pumps the sucked-in milling liquid upwards via the upper additional line 28b.
  • the upper discharge line 26c is blocked by the adjusting valve 52 in the milling operation.
  • the additional line 28 can be connected to a flushing line arrangement 60 with flushing lines 62. In milling operation according to Fig. 7 however, there is no line connection between the additional line 28 and the flush line arrangement 60.
  • the adjusting valve 52 When switching to a flushing operation according to Fig. 8 the adjusting valve 52 connects the additional line 28 of the second pump 30 to the flushing line arrangement 60.
  • the switching device 40 changes the second pump 30, which is designed as an adjustable pump, in its delivery direction.
  • the second pump 30 can conduct liquid via the additional line 28 from top to bottom into the flush line arrangement 60, which leads to the cutting wheels 14.
  • Appropriate flushing outlets 64 at the ends of the flushing lines 62 can be used to specifically flow onto an outside of the milling wheels 14 for flushing away adhering soil material.
  • the adjustment of the adjustment valve 52 releases the line connection between the middle discharge line 26b from the discharge pump 22 to the additional line 28.
  • the adjustment valve 52 connects in the position for the flushing operation according to FIG Fig. 8 the lower discharge line 26a and the middle discharge line 26b with the upper discharge line 26c, so that the discharge pump 22 continues to draw in milling fluid from the area of the preferably rotating milling wheels 14.
  • the discharge pump 22 continues to draw in milling fluid from the area of the preferably rotating milling wheels 14.
  • detached soil material can be sucked in by the cutting wheels 14 directly through the suction element 24 and conveyed upward via the discharge line 26.
  • the milling wheels 14 can also be cleaned and rinsed free during the milling operation.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Paleontology (AREA)
  • Road Repair (AREA)
  • Earth Drilling (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Claims (13)

  1. Fraise pour parois moulées servant à pratiquer une entaille de fraisage dans le sol comportant :
    - un cadre de fraise (12),
    - au moins une paire de roues de fraisage (14), lesquelles sont montées de manière à pouvoir tourner au niveau d'une extrémité inférieure du cadre de fraise (12) et sont entraînées, dans laquelle chaque roue de fraisage (14) présente le long de sa périphérie extérieure une pluralité de dents de fraisage (16), et
    - un dispositif d'évacuation (20) avec au moins une pompe d'évacuation (22) servant à évacuer un liquide de fraisage hors de l'entaille de fraisage dans la zone des roues de fraisage (14),
    caractérisée en ce que
    un dispositif de commutation (40) est prévu, lequel est réalisé pour commuter le dispositif d'évacuation (20) dans un mode de rinçage, dans lequel un flux de liquide produit par au moins une pompe d'évacuation (22) du dispositif d'évacuation (20) est produit sur au moins une roue de fraisage (14) pour rincer la roue de fraisage (14).
  2. Fraise pour parois moulées selon la revendication 1,
    caractérisée en ce que
    au moins une pompe d'évacuation (22) est réalisée en tant que pompe ajustable, laquelle peut être ajustée depuis un mode de fraisage, dans lequel la pompe d'évacuation (22) évacue par aspiration du liquide de fraisage des roues de fraisage (14), dans le mode de rinçage, dans lequel la pompe d'évacuation (22) refoule dans en sens inverse du liquide vers les roues de fraisage (14).
  3. Fraise pour parois moulées selon la revendication 2,
    caractérisée en ce que
    le dispositif d'évacuation (20) présente un conduit d'évacuation (26), lequel s'étend vers le haut depuis l'au moins une pompe d'évacuation (22), et
    en ce que le dispositif de commutation (40) comprend une soupape de réglage (42) au niveau du conduit d'évacuation (26), une ouverture d'aspiration (44) étant ouverte au niveau du conduit d'évacuation (26) avec la soupape de réglage (42).
  4. Fraise pour parois moulées selon l'une des revendications 1 à 3,
    caractérisée en ce que
    deux paires de roues de fraisage (14) sont prévues,
    en ce qu'un élément d'aspiration (24) du dispositif d'évacuation (20) est disposé dans un milieu entre les deux roues de fraisage (14), et
    en ce que dans le mode de rinçage, du liquide circule hors de l'élément d'aspiration (24) en direction des roues de fraisage.
  5. Fraise pour parois moulées selon l'une des revendications 1 à 4,
    caractérisée en ce que
    un ensemble de conduits de rinçage (60) est prévu avec au moins une sortie de rinçage (64) servant à rincer l'au moins une roue de fraisage (14).
  6. Fraise pour parois moulées selon la revendication 5,
    caractérisée en ce que
    le dispositif de commutation (40) comprend une soupape de commutation (48), laquelle relie dans le mode de rinçage un conduit d'évacuation (26) du dispositif d'évacuation (20) à l'ensemble de conduits d'évacuation (60).
  7. Fraise pour parois moulées selon la revendication 5 ou 6,
    caractérisée en ce que
    au moins une deuxième pompe (30) est prévue, laquelle refoule dans un mode de rinçage du liquide vers l'au moins une roue de fraisage (14) en passant par l'ensemble de conduits de rinçage (60).
  8. Fraise pour parois moulées selon la revendication 7,
    caractérisée en ce que
    la deuxième pompe (30) est raccordée au conduit d'évacuation (26) et évacue par un refoulement vers le haut dans le mode de fraisage du liquide de fraisage, et
    en ce que dans le mode de rinçage, la deuxième pompe (30) est reliée à l'ensemble de conduits de rinçage (60) par l'intermédiaire d'une soupape d'ajustement (52) du dispositif de commutation (40).
  9. Fraise pour parois moulées selon l'une des revendications 5 à 8,
    caractérisée en ce que
    plusieurs sorties de rinçage (64) sont prévues, lesquelles sont disposées sous la forme d'un éventail dans la zone de l'au moins une roue de fraisage (14).
  10. Fraise pour parois moulées selon la revendication 5 ou 9,
    caractérisée en ce que
    l'au moins une sortie de rinçage (64) est réalisée en tant qu'une buse pouvant être ajustée.
  11. Procédé pour fraiser une entaille de fraisage dans le sol, en particulier avec une fraise pour parois moulées (10) selon l'une des revendications 1 à 10,
    dans lequel dans un mode de fraisage, les roues de fraisage (14) sont entraînées en rotation et la fraise pour parois moulées (10) est insérée dans le sol et du matériau de sol est retiré par fraisage,
    dans lequel l'entaille de fraisage est pratiquée dans le sol,
    caractérisé en ce que
    dans un mode de rinçage, la fraise pour parois moulées (10) est relevée et les roues de fraisage (14) sont tenues à distance d'une base de fraisage du sol, et
    en ce que dans la position relevée des roues de fraisage (14), un flux de liquide est produit en direction des roues de fraisage (14) aux fins du rinçage.
  12. Procédé selon la revendication 11,
    caractérisé en ce que
    un câble ou une tige est installé(e) au niveau d'une extrémité supérieure de la fraise pour parois moulées (10), avec lequel ou laquelle la fraise pour parois moulées (10) est suspendue au niveau d'un appareil porteur et est ajustée verticalement.
  13. Procédé selon la revendication 11 ou 12,
    caractérisé en ce que
    une pression d'injection et/ou une quantité d'injection du liquide sont réglées aux fins du rinçage des roues de fraisage (14) au moyen d'un dispositif de commande.
EP18167973.9A 2018-04-18 2018-04-18 Foreuse pour faire une mur de diaphragma et procedé pour faire une mur de diaphragma Not-in-force EP3556942B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP18167973.9A EP3556942B1 (fr) 2018-04-18 2018-04-18 Foreuse pour faire une mur de diaphragma et procedé pour faire une mur de diaphragma
US16/383,708 US11286637B2 (en) 2018-04-18 2019-04-15 Trench cutter and method for producing a cut trench in the soil
JP2019078628A JP6725722B2 (ja) 2018-04-18 2019-04-17 土壌に掘削トレンチを形成するためのトレンチ・カッター及び方法
KR1020190045178A KR102311859B1 (ko) 2018-04-18 2019-04-18 토양에 컷 트렌치를 생성하기 위한 트렌치 커터와 방법
CN201910312717.2A CN110387918B (zh) 2018-04-18 2019-04-18 用于在土壤中产生切割沟槽的沟槽切割器和方法

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EP18167973.9A EP3556942B1 (fr) 2018-04-18 2018-04-18 Foreuse pour faire une mur de diaphragma et procedé pour faire une mur de diaphragma

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EP3556942B1 true EP3556942B1 (fr) 2020-04-29

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EP4286593A1 (fr) 2022-05-30 2023-12-06 BAUER Spezialtiefbau GmbH Dispositif d'excavation et procede de creation d'un trou

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EP4086390A1 (fr) 2021-05-06 2022-11-09 BAUER Maschinen GmbH Engin de creusement et procédé de creuser une fente dans le sol
WO2022233672A1 (fr) 2021-05-06 2022-11-10 Bauer Maschinen Gmbh Dispositif de coupe de paroi moulée et procédé de découpe d'une fente dans le sol
EP4286593A1 (fr) 2022-05-30 2023-12-06 BAUER Spezialtiefbau GmbH Dispositif d'excavation et procede de creation d'un trou
WO2023232393A1 (fr) 2022-05-30 2023-12-07 Bauer Spezialtiefbau Gmbh Machine de génie civil et procédé de formation d'un trou

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CN110387918A (zh) 2019-10-29
JP2019190268A (ja) 2019-10-31
EP3556942A1 (fr) 2019-10-23
US20190323200A1 (en) 2019-10-24
CN110387918B (zh) 2022-03-11
KR102311859B1 (ko) 2021-10-12
JP6725722B2 (ja) 2020-07-22
KR20190121706A (ko) 2019-10-28
US11286637B2 (en) 2022-03-29

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