EP3919684A1 - Excavateur et procédé de création d'une fente dans le sol - Google Patents

Excavateur et procédé de création d'une fente dans le sol Download PDF

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Publication number
EP3919684A1
EP3919684A1 EP20178379.2A EP20178379A EP3919684A1 EP 3919684 A1 EP3919684 A1 EP 3919684A1 EP 20178379 A EP20178379 A EP 20178379A EP 3919684 A1 EP3919684 A1 EP 3919684A1
Authority
EP
European Patent Office
Prior art keywords
rod
mast
holding device
lifting
civil engineering
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.)
Granted
Application number
EP20178379.2A
Other languages
German (de)
English (en)
Other versions
EP3919684C0 (fr
EP3919684B1 (fr
Inventor
Christian STENGL
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 EP20178379.2A priority Critical patent/EP3919684B1/fr
Priority to US17/338,242 priority patent/US11466420B2/en
Priority to CN202110624326.1A priority patent/CN113756384B/zh
Publication of EP3919684A1 publication Critical patent/EP3919684A1/fr
Application granted granted Critical
Publication of EP3919684C0 publication Critical patent/EP3919684C0/fr
Publication of EP3919684B1 publication Critical patent/EP3919684B1/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
    • 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
    • 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
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D13/00—Accessories for placing or removing piles or bulkheads, e.g. noise attenuating chambers
    • E02D13/04—Guide devices; Guide frames
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00—Foundations as substructures
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/18—Bulkheads or similar walls made solely of concrete in situ
    • E02D5/187—Bulkheads or similar walls made solely of concrete in situ the bulkheads or walls being made continuously, e.g. excavating and constructing bulkheads or walls in the same process, without joints
    • 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
    • E02F3/188—Dredgers; Soil-shifting machines mechanically-driven with digging wheels turning round an axis, e.g. bucket-type wheels with the axis being horizontal and transverse to the direction of travel
    • 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
    • E02D2250/00—Production methods
    • E02D2250/0023—Cast, i.e. in situ or in a mold or other formwork
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2300/00—Materials
    • E02D2300/0004—Synthetics
    • E02D2300/0018—Cement used as binder
    • E02D2300/002—Concrete
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
    • E02D7/02—Placing by driving
    • E02D7/06—Power-driven drivers
    • E02D7/14—Components for drivers inasmuch as not specially for a specific driver construction
    • E02D7/16—Scaffolds or supports for drivers

Definitions

  • the invention relates to a civil engineering machine with a substantially vertical mast, a trench wall device mounted displaceably in the longitudinal direction of the mast for creating a slot in the ground, and a rod-shaped holding device, at the lower end of which the trench wall device is attached and with which the trench wall device can be linearly displaced along the mast is, according to the preamble of claim 1.
  • the invention further relates to a method for creating a slot in the ground with such a civil engineering machine according to the preamble of claim 11.
  • trench wall units with scaffold-like guide frames with guide plates which are suspended from a rope.
  • a trench wall device With the guide frame, such a trench wall device can guide itself in the slot formed. Because of the rope suspension, very large slot depths can easily be achieved.
  • trench wall devices with a scaffold-like guide frame with guide plates are relatively large and therefore very expensive to manufacture, maintain and transport.
  • a slot depth in such a civil engineering machine is limited to the length of the rod-shaped holding device, which in turn depends on the length of the mast of the civil engineering machine.
  • the holding device can be extended by adding additional rod elements. However, this increases the total weight of the suspended load, which has to be applied by the lifting device of the civil engineering machine when it is withdrawn from the ground. If the trench wall device gets caught in the trench during pulling, which is more likely to occur with increasing trench depth, the maximum power and tensile force of the civil engineering machine can be exceeded.
  • the tensile force required for a possible recovery of a tilted diaphragm wall device can be significantly greater than the tensile force of the carrier device necessary to create the diaphragm wall. Therefore, a carrier device is often chosen that is oversized for the actual construction of the diaphragm wall. This carrier device is more expensive and heavier than one which is sufficiently dimensioned for the pure slit wall construction and, in addition to the pure device costs in terms of acquisition and operation, also causes increased logistics outlay. There is therefore a need for a solution which makes it possible to use a more economical carrier device and still be able to recover the diaphragm wall device in the event that it tilts.
  • the invention is based on the object of specifying a civil engineering machine and a method for creating a slot in the ground with a diaphragm wall device, with which slots can also be produced economically with greater depths with a more compact structural size of the civil engineering machine.
  • the civil engineering machine according to the invention is characterized in that on the mast an upper, first clamping slide with a first clamping device for releasable Tensioning of the rod-shaped holding device and a lower second tensioning slide with a second tensioning device for releasable tensioning of the rod-shaped holding device are movably mounted and the first tensioning slide and the second tensioning slide can be moved relative to one another and that the lower, second tensioning slide is provided with a connecting device for attaching an additional lifting device , which is arranged on the floor and with which a force can be applied to the second carriage in the longitudinal direction.
  • a first aspect of the invention is to provide two clamping carriages with clamping devices for actuating and moving the rod-shaped holding device, by means of which the rod-shaped holding device can preferably be gripped alternately.
  • a releasable force-fit and / or form-fit connection can be established by the clamping devices.
  • At least one of the clamping devices can clamp the holding device at any point.
  • the maximum length of a possible step corresponds approximately to the length of the mast. This arrangement and procedure preferably make it possible to use rod elements that are significantly longer than the mast.
  • the lower, second clamping slide is provided with a connecting device for attaching an additional lifting device, which is arranged on the floor and with which a force can be applied to the second slide in the longitudinal direction.
  • an additional lifting device can be attached quickly and easily to the second clamping slide.
  • the lifting device can use the second tensioning slide an additional lifting force can be applied to the rod-shaped holding device in the longitudinal direction of the mast.
  • a total tensile force of the civil engineering machine can be increased considerably. Since the lifting device can be supported directly on the ground, this has no negative effect on the load on the mast or the tilt resistance of the civil engineering machine. Rather, the latter can even be increased by a resulting counterforce.
  • a preferred embodiment of the invention consists in that the first tensioning device and the second tensioning device can be actuated independently of one another by a control device for alternately tensioning the rod-shaped holding device.
  • the rod-shaped holding device can be clamped simultaneously by both clamping devices and displaced by moving the at least two clamping carriages at the same time.
  • the upper first clamping slide can be released from the rod-shaped holding device and moved back up again, while the rod-shaped holding device is still tensioned and held by the passive lower second clamping slide.
  • the tensioning device of the second tensioning slide can be released.
  • the second clamping slide can remain in the lower position and the further advance step can be carried out solely by moving the upper first clamping slide downwards.
  • the trench wall device can be pulled out of the slot step-by-step with the first clamping slide.
  • the trench wall device is designed as a trench wall cutter or as a trench wall gripper.
  • a trench wall cutter at least one cutting wheel pair is provided, which are driven to rotate about an axis of rotation directed transversely or orthogonally to the longitudinal or sinking direction.
  • two pairs of cutting wheels arranged parallel to one another are provided next to one another on the trench wall cutter.
  • two grab shovels are mounted on the lower frame of the diaphragm wall device.
  • a frame of the trench wall device is preferably designed without a guide frame with plate-shaped guide elements for resting on the walls of the trench.
  • the rod-shaped holding device is preferably designed as a guide rod through which the trench wall device can be guided from outside the trench.
  • a milling cutter can be designed as a so-called CSM® milling cutter, which is guided from outside the slot.
  • the holding device can in principle be a single, continuous guide rod. According to a further development of the invention, it is particularly preferred that the holding device is longer than the mast or is formed with a plurality of rod elements. These rod elements are detachably connected to one another and can be put together step by step, especially when sinking. When pulling the trench wall device, the individual rod elements can be released again step by step.
  • the rod elements preferably have a length which corresponds approximately to the length of the mast of the civil engineering machine.
  • the holding device can also be a single rod which extends beyond the length of the mast.
  • the rod-shaped holding device is tubular.
  • Data and energy lines can be laid inside the pipe interior, for example for supplying hydraulic fluid and / or electrical power.
  • one or more conveying lines can be provided for supplying and / or removing suspension to the trench wall device.
  • the trench wall device can be provided for an in-situ method, with a hardenable mass being produced together with the milled soil material in situ by supplying a hardenable suspension to the rotating milling wheels.
  • the trench wall device can be guided linearly along the mast by the holding device.
  • At least the upper, first clamping slide is driven so as to be movable along the mast.
  • the carriage is guided along the mast on a linear guide so that it can be moved.
  • a double-acting hydraulic cylinder or a Winch assembly can be provided on the mast.
  • only the upper, first clamping slide is driven to be linearly displaceable, while the lower, second clamping slide is mounted only displaceably on the mast without its own linear drive.
  • both clamping slides can also be provided with their own linear drive on the mast.
  • three or more clamping slides can be provided on the mast.
  • the connecting device can be designed in any suitable manner which enables a desired transmission of force. Contact surfaces, spherical caps, screw connections or the like can be provided.
  • An advantageous embodiment of the invention is that the connecting device has at least one connecting eyelet directed transversely to the longitudinal direction, a locking bolt being insertable through a fastening eye of the lifting cylinder and the at least one connecting eyelet for the releasable connection between a lifting cylinder of the lifting device and the second clamping slide.
  • connection eyes For each fastening eye on a lifting cylinder of the lifting device, two laterally arranged connection eyes are preferably arranged so that a good power transmission can take place from the lifting device to the second clamping slide.
  • the lifting force of the lifting device can be applied in particular when the trench wall device is pulled, the lifting force being directed upwards in the longitudinal direction of the mast.
  • a downward lifting force can also be applied, for example if an additional feed force should be required when an obstacle is encountered.
  • the lifting device can also be anchored to the floor.
  • the invention further comprises a lifting device, in particular for the civil engineering machine according to the invention described above, the lifting device being characterized in that it has a lower attachment frame for placing on the ground and at least one lifting cylinder which is attached to the attachment frame on the one hand and with a connecting element on the other to connect is provided with a clamping slide.
  • the lifting device can be detachably attached in a simple manner to the second clamping slide of the civil engineering machine described above.
  • the lifting device according to the invention thus represents an independent component which does not necessarily have to be assigned to a single civil engineering machine. Rather, the lifting device can be kept available as a standby component at a construction site with several civil engineering machines with a diaphragm wall device, so that the lifting device is only attached to a specific civil engineering machine for a limited time when required.
  • a diaphragm wall device gets stuck in a slot filled with a settable suspension, for example because the diaphragm wall device has got stuck in the slot or there has been a power failure or a reduction in the power of the existing pulling device on a civil engineering machine.
  • the trench wall device can be safely and reliably pulled out of the trench in such a case. In this way it can be prevented that an expensive trench wall device is concreted in a trench when the suspension mass sets and is thus lost or can only be freed again with considerable effort.
  • two or more lifting cylinders are arranged, which are preferably designed as hydraulic cylinders.
  • the lifting cylinders are in particular evenly distributed over the attachment frame, so that lifting forces that are as symmetrical as possible can be transmitted to an attached clamping slide.
  • the use of hydraulic cylinders enables particularly large forces to be generated.
  • a lifting step can be repeated as often as desired by releasing the second clamping device and resetting the second clamping slide by means of the at least one lifting cylinder.
  • the attachment frame is annular or partially annular with a central passage for a rod-shaped holding device.
  • the stacking frame can thus be arranged like a bridge over a slot, which is usually provided with concrete guide walls at the upper edge.
  • the method according to the invention for creating a trench in the ground with a civil engineering machine is characterized in that the trench wall device is sunk into the ground with the removal of soil material by means of the rod-shaped holding device, the slot being created so that the rod-shaped holding device along the Mastes is moved that the lower second clamping slide is releasably connected to an additional lifting device, which is placed on the ground, and that the second clamping slide is clamped by means of the second clamping device on the holding device and a lifting force on the holding device and the additional lifting device Trench wall device is applied.
  • the method can in particular be carried out with the civil engineering machine according to the invention described above or with the lifting device according to the invention described above.
  • a preferred variant of the method consists in that at least one further rod element is attached to the rod-shaped holding device during the sinking for the purpose of extending it.
  • the additional lifting device can be provided and used.
  • inexpensive, simple civil engineering machines can also be used for large slot depths, which can be equipped and retrofitted with the additional lifting device if necessary.
  • the slot for forming a slot wall segment in the ground with a hardenable Mass is filled.
  • a large number of individual slots can be formed next to one another, so that, overall, after the compound has been filled and hardened, a slot wall can be created in the ground.
  • the diaphragm wall can be created as a cut-off wall to prevent the ingress of groundwater or as a retaining wall to secure the excavation.
  • the curable mass can be filled in while the slot is being created or, in a so-called two-phase process, only after the slot has been created.
  • the hardenable mass is formed in situ during the milling in the slot.
  • the additional lifting device can be used to apply an additional lifting or feed force from the lifting device to the rod-shaped holding device and thus to the trench wall device during the sinking.
  • the lifting force is applied by the lifting device when the diaphragm wall device is pulled out of the ground. This can be done according to plan, for example with a considerably lengthened and therefore considerably heavier rod-shaped holding device or only when necessary, for example if the diaphragm wall device is stuck in the slot unplanned and the tensile force available on the civil engineering machine is no longer sufficient on its own.
  • a civil engineering machine 10 comprises a carrier device 12 with a crawler undercarriage 14 on which a superstructure 16 is rotatably mounted.
  • a mast 20, which is essentially vertical during operation, is pivotably articulated to the upper carriage 16 of the carrier device 12 via an adjusting mechanism 18 with adjusting cylinders.
  • an upper, first clamping slide 30 and a lower, second clamping slide 40 are mounted displaceably in a longitudinal direction of the mast 20.
  • a rod-shaped holding device 60 is held and guided parallel to the mast 20 via the first clamping slide 30 and the second clamping slide 40.
  • an additional lifting device 50 with lifting cylinders 54 is arranged, which will be used below in connection with the Figures 4 and 5 will be explained in more detail.
  • a trench wall device 70 designed as a trench wall cutter is attached to a lower end of the rod-shaped holding device 60. Via the holding device 60, the trench wall device 70 can be sunk essentially vertically in a soil, forming a slot.
  • Power and data connections are established between the carrier device 12 and the trench wall device 70 via lines 62, which are connected on the one hand to the carrier device 12 via the mast 20 and on the other hand to a connection section 66 at the upper end of the rod-shaped holding device 60.
  • the lines 62 run from the connection section 66 at the upper end of the holding device 60 via an inner cavity of the tubular holding device 60 to the trench wall device 70.
  • the lines 62 are arranged along the mast 20 and the holding device 60 in the manner of a cable drag.
  • a connecting section 64 is arranged, which can be used to lift the holding device 60 by means of a crane and is also designed for the connection of further rod elements for the axial extension of the holding device 60.
  • a mast head 24 with an additional lifting device 26 is provided at the upper end of the mast 20 at the upper end of the mast 20 at the upper end of the mast 20, a mast head 24 with an additional lifting device 26 is provided.
  • the upper first clamping slide 30 is driven to be displaceable or displaceable in the vertical direction or longitudinal direction of the mast 20.
  • a pulley 28 is provided in the area of the mast head 24 for a drive cable (not shown) which, on the one hand, has an in Fig. 1
  • the winch 29 shown on the mast 20 and on the other hand, after being deflected by the deflection roller 28, is connected to a first slide base body 32 of the first tensioning slide 30.
  • a tensile force can be applied to the first tensioning slide 30 via this first drive cable in order to pull the tensioning slide 30 upwards in the longitudinal direction.
  • a further deflection roller (not shown) of the drive device is also provided at the lower end of the mast 20, with a further drive cable being guided by the winch 29 over the lower end of the mast 20 to the first tensioning slide 30, so that a tensile force is created in this way can be applied down to the first clamping slide 30.
  • first clamping slide 30 two lateral, opposite clamping cylinders 36 for forming a first clamping device 34 are arranged on the first slide base body 32.
  • a non-positive connection to the rod-shaped holding device 60 can be established by the first tensioning device 34, so that the holding device 60 can be moved up or down in the longitudinal direction via the first tensioning slide 30 along the mast 20. It is alternatively or additionally possible here to establish a positive connection, e.g. B. by locking elements actuated by the clamping cylinder 36 engaging in corresponding receptacles on the holding device 60.
  • the holding device 60 can have several receptacles in different positions.
  • the second clamping slide 40 is designed similarly to the first clamping slide 30 and has a second slide base body 42 which can be displaced along the linear mast guide 22 on the mast 20. While the first clamping slide 30 is actively driven in the illustrated embodiment, the second clamping slide 40 is not driven displaceably via a drive device which is fixedly provided on the carrier device 12 or the mast 20.
  • the second tensioning slide 40 thus represents a basically passively displaceable element which can optionally be locked on the mast 20.
  • Two lateral tensioning cylinders 46 are also arranged opposite one another on the second slide base body 42 in order to form a second tensioning device 44 for frictional tensioning of the rod-shaped holding device 60.
  • a form-fitting clamping connection is possible as an alternative or in addition.
  • the passive second tensioning slide 40 can serve as a so-called fall-through protection when the diaphragm wall device 70 is pulled by means of the holding device 60.
  • the first tensioning slide 30 is moved downwards along the mast 20 in order to be positively connected to the rod-shaped holding device 60 in a lower position. With such a downward movement of the first tensioning slide 30, the rod-shaped holding device 60 can be tensioned and held by the lower, second tensioning slide 40.
  • the non-positive connection between the holding device 60 and the lower, second tensioning slide 40 can be released.
  • the first clamping slide 30 with the holding device 60 clamped to it can now be moved upwards in order to pull the trench wall device 70 out of a slot 7 in the floor 5.
  • the second tensioning device 44 of the second tensioning slide 40 can then be activated again in order to enable the first tensioning slide 30 to be released and the first tensioning slide 30 to be moved back down to pull the trench wall device 70 further.
  • an additional lifting device 50 can be attached to the lower end of the mast 20 and the lower second clamping slide 40 according to the invention.
  • the lifting device 50 has a C-shaped or U-shaped attachment frame 52 with a central passage 53 for the rod-shaped holding device 60.
  • the attachment frame 52 is placed on the floor 5.
  • the attachment frame 52 has a length which enables it to bridge the width of the slot 7 formed and to rest on the floor 5 on both sides of the slot 7 formed, as illustrated in FIG Fig. 5 is shown.
  • An open side of the attachment frame 52 can be placed laterally against the lower end of the mast 20 via contact elements 55, without the attachment frame 52 necessarily having to be firmly connected to the mast 20.
  • a support foot 21 for supporting the mast 20 on the floor 5 can be provided in a basically known manner.
  • a connecting device 48 is formed on a lower region of the second tensioning slide 40, which in the illustrated embodiment is formed by horizontally directed connecting eyelets 49.
  • Two lifting cylinders 54 each with a fastening eye 56, can be fastened to the respective connection eyes 59 of the connection device 48 via transversely directed locking bolts 58.
  • a lower end of the lifting cylinder 54 is articulated in each case on the attachment frame 52 of the lifting device 50.
  • the lifting cylinders 54 can then be extended when the second clamping slide 60 is non-positively connected to the rod-shaped holding device 60 via the second clamping device 44. In this way, the second clamping slide 40, which is mounted displaceably on the mast 20, can be pressed upwards together with the holding device 60.
  • the lifting cylinders 54 are preferably aligned centrally to the slot 7 in the base 5 and parallel to the longitudinal direction of the mast 20, so that practically no transverse force is exerted on the carrier device 12.
  • the lifting process can be repeated step by step.
  • an additional downward feed force can also be applied to the rod-shaped holding device 60 and the trench wall device 70 via the lifting device 50, if necessary.
  • the lifting device is z. B. anchored in the ground by means of ground anchors (not shown) in order to prevent the attachment frame from lifting off when the additional feed force is applied. If there is no need for an additional lifting force, the lifting device 50 can be dismantled again by releasing the connecting device 48 and removed from the civil engineering machine 10.
  • the trench wall device 70 is designed as a trench wall milling machine with a device frame 72 and milling wheels 74 arranged thereon.
  • the trench wall cutter shown is designed for a so-called CSM® process, the circumferential dimensions of the device frame 72 being smaller than a milling cross section.
  • the device frame 72 is thus spaced from the walls of the slot 7 in the floor 5.
  • suspension can be introduced into the slot 7 via a feed line 23 from the civil engineering machine 10 via a hose line (not shown in detail) and mixed with the excavated soil material directly in situ in the slot 7 by the milling wheels 74.
  • This mixture produced in this way can represent a so-called floor mortar which hardens in the slot 7 to form a diaphragm wall segment.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Paleontology (AREA)
  • Mechanical Engineering (AREA)
  • Earth Drilling (AREA)
  • Bulkheads Adapted To Foundation Construction (AREA)
  • Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
EP20178379.2A 2020-06-04 2020-06-04 Excavateur et procédé de création d'une fente dans le sol Active EP3919684B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP20178379.2A EP3919684B1 (fr) 2020-06-04 2020-06-04 Excavateur et procédé de création d'une fente dans le sol
US17/338,242 US11466420B2 (en) 2020-06-04 2021-06-03 Foundation engineering machine and method for producing a trench in the ground
CN202110624326.1A CN113756384B (zh) 2020-06-04 2021-06-04 地下工程机和用于在地面中创建缝隙的方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20178379.2A EP3919684B1 (fr) 2020-06-04 2020-06-04 Excavateur et procédé de création d'une fente dans le sol

Publications (3)

Publication Number Publication Date
EP3919684A1 true EP3919684A1 (fr) 2021-12-08
EP3919684C0 EP3919684C0 (fr) 2024-08-07
EP3919684B1 EP3919684B1 (fr) 2024-08-07

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EP20178379.2A Active EP3919684B1 (fr) 2020-06-04 2020-06-04 Excavateur et procédé de création d'une fente dans le sol

Country Status (3)

Country Link
US (1) US11466420B2 (fr)
EP (1) EP3919684B1 (fr)
CN (1) CN113756384B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4389984A1 (fr) * 2022-12-21 2024-06-26 RTG Rammtechnik GmbH Agencement de mât pour un engin de chantier et procédé associé

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202019100319U1 (de) * 2019-01-21 2020-04-22 Liebherr-Werk Nenzing Gmbh Schlitzwandfräse

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1452645B1 (fr) 2003-02-27 2007-09-12 BAUER Maschinen GmbH Procédé pour creuser des tranchées dans le sol et fraiseuse à rideau souterrain
FR2899608A1 (fr) * 2006-04-06 2007-10-12 Cie Du Sol Soc Civ Ile Outillage de forage
EP2204500A1 (fr) * 2008-12-30 2010-07-07 Soletanche Freyssinet Machine d'excavation à kelly pivotable
EP3530812A1 (fr) * 2018-02-26 2019-08-28 Liebherr-Werk Nenzing GmbH Équipement pour travaux de forage et / ou de fondation

Family Cites Families (9)

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US20210381191A1 (en) 2021-12-09
US11466420B2 (en) 2022-10-11
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CN113756384B (zh) 2022-12-13
EP3919684B1 (fr) 2024-08-07

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