EP3683361A1 - Machine modulaire pour forer une tranche - Google Patents

Machine modulaire pour forer une tranche Download PDF

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Publication number
EP3683361A1
EP3683361A1 EP20150513.8A EP20150513A EP3683361A1 EP 3683361 A1 EP3683361 A1 EP 3683361A1 EP 20150513 A EP20150513 A EP 20150513A EP 3683361 A1 EP3683361 A1 EP 3683361A1
Authority
EP
European Patent Office
Prior art keywords
frame part
trench wall
wall cutter
cutter
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.)
Granted
Application number
EP20150513.8A
Other languages
German (de)
English (en)
Other versions
EP3683361B1 (fr
Inventor
Johannes Rhomberg
Florian Gabriel
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.)
Liebherr Werk Nenzing GmbH
Original Assignee
Liebherr Werk Nenzing 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 Liebherr Werk Nenzing GmbH filed Critical Liebherr Werk Nenzing GmbH
Publication of EP3683361A1 publication Critical patent/EP3683361A1/fr
Application granted granted Critical
Publication of EP3683361B1 publication Critical patent/EP3683361B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00—Excavations; Bordering of excavations; Making embankments
    • E02D17/13—Foundation slots or slits; Implements for making these slots or slits
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/18—Dredgers; Soil-shifting machines mechanically-driven with digging wheels turning round an axis, e.g. bucket-type wheels
    • E02F3/22—Component parts
    • E02F3/24—Digging wheels; Digging elements of wheels; Drives for wheels
    • E02F3/241—Digging wheels; Digging elements of wheels; Drives for wheels digging wheels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/18—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes
    • B66C23/36—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes mounted on road or rail vehicles; Manually-movable jib-cranes for use in workshops; Floating cranes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/62—Constructional features or details
    • 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
    • E02F3/46—Dredgers; Soil-shifting machines mechanically-driven with reciprocating digging or scraping elements moved by cables or hoisting ropes ; Drives or control devices therefor
    • E02F3/52—Cableway excavators
    • 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
    • E02F3/46—Dredgers; Soil-shifting machines mechanically-driven with reciprocating digging or scraping elements moved by cables or hoisting ropes ; Drives or control devices therefor
    • E02F3/58—Component parts
    • 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
    • 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
    • E02F5/04—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches with digging screws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C2700/00—Cranes
    • B66C2700/03—Cranes with arms or jibs; Multiple cranes
    • 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
    • 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
    • E02F9/08—Superstructures; Supports for superstructures
    • E02F9/0808—Improving mounting or assembling, e.g. frame elements, disposition of all the components on the superstructures

Definitions

  • the present invention relates to a trench wall cutter for producing a bottom slot, which can be connected to a carrier device, with a frame and at least one milling tool arranged on the frame for comminuting soil material.
  • the invention further relates to a carrier device, in particular a duty cycle crawler crane, with a trench wall cutter according to the invention.
  • Trench wall cutters are used to create floor slits for the construction of trench walls and exist in various designs and sizes. Trench wall cutters are usually mounted on mobile carrier devices such as mobile cranes or cable excavators. Each area of application has special requirements. These requirements can concern, for example, size restrictions of the trench cutter and of the carrier device due to limited working space. For this reason, so-called compact trench cutters are typically used in environments with limited working space, which have a lower height and are often also mounted on smaller carrier devices.
  • a compact trench cutter includes all the basic functions and components of a conventional trench cutter with a smaller overall geometry.
  • the height of the compact trench wall cutter is significantly lower in order to allow insertion into the bottom slot at a lower working height of the overall system.
  • a disadvantage of such compact trench wall cutters is a reduced stability in the bottom slot, which is why they are normally only used when a standard trench wall cutter cannot be used.
  • diaphragm wall cutters and carrier devices of different sizes are required. Different diaphragm wall cutters and possibly even different carrier devices must therefore be used for different requirements, in particular with regard to the maximum permissible working height. It should be noted that each trench cutter is a very costly purchase.
  • the object of the present invention is to provide a trench cutter which enables use under different working conditions with different requirements with regard to the working height.
  • the trench wall cutter which can be connected to a carrier device and has the features of claim 1.
  • the trench wall cutter comprises a frame and at least one milling tool arranged on the frame for comminuting soil material.
  • the frame in this case comprises an upper, a middle and a lower frame part which can be detachably connected to one another, the upper and the lower frame part being releasably connectable to one another both directly and via the middle frame part which can be arranged or mounted in between.
  • the present invention makes it possible to cover at least two different areas of application with only one modular trench wall cutter. This will be a conversion process from a longer standard trench cutter with a central frame part to a shorter compact trench cutter without a central frame part accomplished.
  • the modularity is based on dividing the frame of the trench cutter into three parts, which are compatible with one another and releasably connectable to one another.
  • the modular construction of the diaphragm wall cutter according to the invention with an optionally installable middle frame part means that the diaphragm wall cutter can be adapted to the respective requirements. This means that there is no longer any need to use separate trench wall cutters with different overall heights or lengths for the respective work assignments, which brings an enormous cost advantage.
  • a standard trench wall cutter construction with built-in middle frame part can be used, since the longer design has better properties with regard to stability within the base slot. If space is limited, the middle frame part can be removed, resulting in a shorter compact trench wall cutter. In this case, only subordinate components such as e.g. Hose lines, etc. running in the middle frame part can be adapted, which represents a comparatively low outlay.
  • the at least one milling tool is arranged on the lower frame part, preferably at least one drive unit being provided, by means of which the at least one milling tool can be driven, and which is also arranged on the lower frame part.
  • the milling tool is, in particular, a milling wheel, wherein a plurality of milling wheels are preferably provided which are arranged next to one another and can be rotated in opposite directions.
  • the upper frame part comprises an electronic control unit and / or that the lower frame part has a suction opening and a feed pump connected therewith for conveying excavation generated by the at least one milling tool, or with an excavation introduced into the bottom slot Suspension mixed excavation, includes.
  • the trench wall cutter can be operated both with and without a built-in central frame part.
  • the components of the trench cutter which are elementary for the milling function, can be accommodated in the lower part of the frame, e.g. the drives for the milling tools, a feed pump, etc. Further functions or components of the trench cutter, such as a control, can be accommodated in the upper frame part.
  • the middle frame part does not contain any components that are absolutely necessary for the operation of the trench wall cutter according to the invention, but merely represents a transition part that extends the total length of the trench wall cutter. Only the frame itself and possibly through lines connecting the upper and lower frame part are provided here.
  • the trench wall cutter comprises at least one passage line running between the upper and lower frame part.
  • the through line can be, for example, a conveying hose for conveying excavation generated by the at least one milling tool, a supply line for guiding e.g. Hydraulic oil, a suspension solution or concrete to the lower frame part, or an electrical cable.
  • a delivery hose for example a delivery hose, a supply line and an electrical line.
  • the at least one through line comprises three separate parts, each of which is arranged on the lower, middle and upper frame part and can be releasably connected to one another by means of compatible connections.
  • the middle frame part you can likewise the one or more feed-through lines are separated, so that the feed-through line parts in the area of the upper and lower frame part can be coupled together again by means of the compatible connections and are ready for the operation of the compact trench wall cutter.
  • the parts of the through lines, which are assigned to the middle frame part, are therefore removed or installed with this.
  • the upper and lower frame parts are separated from one another, as are the corresponding parts of the one or more through lines.
  • the parts of the through lines are connected to each other by means of the compatible connections.
  • An extension or shortening of the trench wall cutter is accompanied by a corresponding extension or shortening of the at least one through line.
  • the compatible connections are adapted to the respective existing types of feed-through lines (e.g. delivery hose, supply line or electrical cable) and can therefore represent electrical, hydraulic or other suitable connections or couplings.
  • two interchangeable through lines with different lengths are provided, the shorter through line being releasably connectable to the trench cutter with the middle frame part removed and the longer through line to the trench cutter with the middle frame part installed.
  • the entire at least one through line is exchanged during a conversion.
  • a correspondingly dimensioned shorter through line is used and in the case of a structure with built-in middle frame part (standard trench wall cutter) installed a correspondingly longer through line.
  • corresponding connections must also be provided on the components connected to the corresponding through lines (e.g. feed pump, control, hydraulic motor, etc.) for releasable connection to the through lines so that they can be easily removed or installed.
  • Corresponding connections for connecting the through lines with lines of the carrier device must also be present.
  • the trench wall cutter according to the invention can have more than just two different lengths (in particular when using more than one removable middle frame part), there must of course be a corresponding number of through lines with different lengths.
  • the frame parts have connecting means for producing a releasable connection, the connecting means of the lower and the upper frame part being compatible both with one another and with the connecting means of the middle frame part.
  • the connecting means comprise both mechanical connecting elements for producing a mechanically releasable connection of the frame parts and connections for releasably coupling the parts of the through line, the connecting means preferably being designed as a quick coupling for simultaneously connecting the frame parts and the parts of the through line are.
  • the mechanical and other (e.g. hydraulic, electrical, etc.) connections do not have to be separated separately or be made, but the connection is quick and easy via a multi-coupling, which also forms the mechanical connection.
  • the present invention further relates to a carrier device with a trench cutter according to the invention.
  • the carrier device is, in particular, a mobile crane or cable excavator. Obviously, the same advantages and properties result as for the trench wall cutter according to the invention, which is why a repetitive description is omitted here.
  • the trench wall cutter 10 comprises a frame which comprises three individual frame parts, namely an upper 12, a middle 14 and a lower 16 frame part.
  • a plurality of milling tools 18 designed as milling wheels, by means of which the bottom slot is created.
  • the soil material of the subsoil is crushed by the rotation of the cutting wheels 18.
  • the drive units of the milling wheels 18 (not shown), which are supplied via corresponding supply lines which run from the upper 12 to the lower 16 frame part.
  • the lower frame part 16 can further comprise a suction opening (not shown), to which a feed pump (not shown), for example a centrifugal pump, is connected.
  • a conveyor hose (not shown) is in turn connected to this, via which the ground material sucked in by the pump from the suction opening (possibly together with a suspension introduced into the bottom slot via a supply line) is conveyed out of the bottom slot.
  • hydraulic lines and / or electrical cables can run along the trench wall cutter 10. These aforementioned cables, hoses and lines (as well as other lines not explicitly listed here) are collectively referred to here as through line (s). These through lines run along the trench cutter between the upper 12 and lower 16 frame part, that is (if installed) also over the middle frame part 14.
  • the upper frame part 12 further components such as a controller may be provided. Furthermore, the upper frame part 12 can have a connection point for mounting the trench wall cutter 10 on a carrier device. There may also be connection points for connecting the through lines to corresponding lines of the carrier device (e.g. for the energy supply or the removal of the comminuted soil material).
  • the trench wall cutter 10 is of modular construction, the individual frame parts 12, 14, 16 being able to be connected to one another in a compatible manner.
  • the upper and lower frame parts 12, 16 can be connected to one another via the middle frame part 14 in order to form a longer standard trench wall cutter 10 ( Figure 1 ).
  • the middle frame part 14 can, however, also be removed, so that the upper and lower frame parts 12, 16 are connected directly to one another to form a shorter compact trench cutter 10.
  • This structure is in the Figure 2 shown.
  • the frame parts 12, 14, 16 have correspondingly compatible connections (not shown) for this purpose, which permit conversion by inserting or removing the middle frame part 14.
  • the three frame parts 12, 14, 16 of the trench cutter 10 can thus either together as a longer standard trench cutter (see Figure 1 ) or without the middle frame part 14 as a shorter compact trench wall cutter (see Figure 2 ) to be assembled.
  • the components are compatible, which is why the existing frame parts 12, 14, 16 are suitable for both variants. Only subordinate components such as feed-through lines have to be individually adapted or replaced.
  • the modularity thus enables the option to set two sizes of the trench wall cutter 10 by means of a conversion or conversion process.
  • the through lines running between the upper and lower frame parts 12, 16 must also be converted or exchanged. This can e.g. in that different through lines with different lengths are provided, which are used in the corresponding construction variants of the trench cutter 10 (i.e. shorter through lines for a shorter compact trench cutter construction).
  • corresponding connections can be provided for the different through lines, so that, for example, when the middle frame part 14 is removed, the corresponding through lines are also removed and the connections of the through lines of the upper and lower ones Frame parts 12, 16 are connected directly to one another in order to close the respective lines or circuits.
  • the middle frame part 14 does not include any components which are absolutely necessary for the operation of the trench wall cutter 10. Thus, this can be operated properly with or without the middle frame part 14.
  • the latter only represents a transition part for adjusting the length of the trench wall cutter 10 according to the invention and, moreover, has no further function essential for the milling operation.
  • middle frame parts 14 which can be arranged between the upper 12 and lower 16 frame parts can be provided, so that there is a greater possibility of combination and greater flexibility with regard to the adjustable total length of the trench wall cutter 10.
  • the middle frame parts 14 can all be constructed identically or they can have different lengths in order to be able to set the total length of the trench wall cutter 10 more precisely.
  • the previously described properties and advantages of the trench wall cutter 10 also apply to an embodiment with a plurality of (identical or different) central frame parts 14.
  • FIG. 3 and 4 a carrier device designed as a cable excavator with a trench cutter 10 according to the invention is shown by way of example in a side view.
  • the Figure 3 shows a complete construction of the trench cutter 10 with built-in middle frame part 14. This longer construction represents a standard trench cutter 10 with optimal stability properties, as is usually used when there is sufficient space.
  • the Figure 4 shows a construction in which the middle frame part 14 has been removed in order to obtain a shorter compact trench wall cutter 14. This can be used, for example, in confined spaces.
  • the same carrier device and the same components of the trench cutter 10 can be used for this.
  • a contractor wants to get into the trench cutter business. Due to the high variance of incoming orders, a single standard trench cutter is not sufficient to cover all areas of application. Since the budget is limited, the purchase of two different trench cutters is not an option. In addition, he does not want to buy a second trench cutter that could only be used for special areas of application.
  • the modular trench cutter 10 can be converted from the longer standard version to the shorter compact version and thus cover different areas of application.
  • the modular trench cutter 10 is also compatible as a compact version with "smaller" carrier devices. For further purchases, this can in turn bring advantages due to the high compatibility of the modular trench wall cutter 10.

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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)
  • Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
EP20150513.8A 2019-01-18 2020-01-07 Machine modulaire pour forer une tranche Active EP3683361B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102019101305.4A DE102019101305A1 (de) 2019-01-18 2019-01-18 Modulare Schlitzwandfräse

Publications (2)

Publication Number Publication Date
EP3683361A1 true EP3683361A1 (fr) 2020-07-22
EP3683361B1 EP3683361B1 (fr) 2023-03-01

Family

ID=69143466

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20150513.8A Active EP3683361B1 (fr) 2019-01-18 2020-01-07 Machine modulaire pour forer une tranche

Country Status (4)

Country Link
US (1) US11619023B2 (fr)
EP (1) EP3683361B1 (fr)
CN (1) CN111501784A (fr)
DE (1) DE102019101305A1 (fr)

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CN112095700A (zh) * 2020-09-18 2020-12-18 江苏科弘岩土工程有限公司 一种具有摆刀单元的双轮铣槽机铣头装置
EP4053342A1 (fr) * 2021-03-01 2022-09-07 BAUER Maschinen GmbH Dispositif de fraisage pour parois moulées et procédé de fraisage d'une fente fraisée dans le sol
DE102024107099A1 (de) * 2024-03-13 2025-09-18 Liebherr-Werk Nenzing Gmbh Bodenbearbeitungsgerät, insbesondere Schlitzwandfräse

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DE102021114945A1 (de) 2021-06-10 2022-12-15 Liebherr-Werk Nenzing Gmbh Schlitzwandfräse

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Publication number Priority date Publication date Assignee Title
JPH026746U (fr) 1988-06-29 1990-01-17
DE3911624A1 (de) 1989-04-09 1990-10-11 Delmag Maschinenfabrik Schlitzwandfraese
JPH07238550A (ja) 1994-02-28 1995-09-12 Nisshin Shoji Kk 連続掘削機
US20080022563A1 (en) 2006-07-28 2008-01-31 Philippe Chagnot Cutter head for an excavator machine
EP2251491A1 (fr) * 2009-05-15 2010-11-17 BAUER Maschinen GmbH Dispositif de fraisage et procédé de dépôt de matériau de sol
WO2017042496A1 (fr) 2015-09-10 2017-03-16 Soletanche Freyssinet Machine de forage
EP3401444A1 (fr) * 2017-05-11 2018-11-14 BAUER Maschinen GmbH Dispositif d'excavation de tranchée et procédé de fabrication de tranchées dans le sol

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Publication number Priority date Publication date Assignee Title
CN112095700A (zh) * 2020-09-18 2020-12-18 江苏科弘岩土工程有限公司 一种具有摆刀单元的双轮铣槽机铣头装置
EP4053342A1 (fr) * 2021-03-01 2022-09-07 BAUER Maschinen GmbH Dispositif de fraisage pour parois moulées et procédé de fraisage d'une fente fraisée dans le sol
WO2022184429A1 (fr) * 2021-03-01 2022-09-09 Bauer Maschinen Gmbh Appareil de découpe de paroi moulée et procédé de découpe d'une tranchée dans le sol
DE102024107099A1 (de) * 2024-03-13 2025-09-18 Liebherr-Werk Nenzing Gmbh Bodenbearbeitungsgerät, insbesondere Schlitzwandfräse
EP4640951A1 (fr) 2024-03-13 2025-10-29 Liebherr-Werk Nenzing GmbH Appareil de travail du sol, en particulier outillage pour faire une fouille de fondation

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US11619023B2 (en) 2023-04-04
US20200232183A1 (en) 2020-07-23
CN111501784A (zh) 2020-08-07
DE102019101305A1 (de) 2020-07-23
EP3683361B1 (fr) 2023-03-01

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