WO2022218719A1 - Slurry wall cutter and method for changing a cutting width of a slurry wall cutter - Google Patents
Slurry wall cutter and method for changing a cutting width of a slurry wall cutter Download PDFInfo
- Publication number
- WO2022218719A1 WO2022218719A1 PCT/EP2022/058563 EP2022058563W WO2022218719A1 WO 2022218719 A1 WO2022218719 A1 WO 2022218719A1 EP 2022058563 W EP2022058563 W EP 2022058563W WO 2022218719 A1 WO2022218719 A1 WO 2022218719A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cutting wheel
- cutting
- wheel drive
- module
- wall cutter
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 7
- 239000002002 slurry Substances 0.000 title abstract 3
- 238000003801 milling Methods 0.000 claims description 34
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 239000003921 oil Substances 0.000 description 8
- 230000004323 axial length Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000013016 damping Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000012208 gear oil Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000036346 tooth eruption Effects 0.000 description 1
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
- E02F3/20—Dredgers; Soil-shifting machines mechanically-driven with digging wheels turning round an axis, e.g. bucket-type wheels with tools that only loosen the material, i.e. mill-type wheels
- E02F3/205—Dredgers; Soil-shifting machines mechanically-driven with digging wheels turning round an axis, e.g. bucket-type wheels with tools that only loosen the material, i.e. mill-type wheels with a pair of digging wheels, e.g. slotting machines
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/18—Dredgers; Soil-shifting machines mechanically-driven with digging wheels turning round an axis, e.g. bucket-type wheels
- E02F3/22—Component parts
- E02F3/24—Digging wheels; Digging elements of wheels; Drives for wheels
- E02F3/246—Digging wheels; Digging elements of wheels; Drives for wheels drives
Definitions
- the invention relates to a trench wall cutter with at least one bearing plate, a central drive shaft, which is arranged in the bearing plate, at least two cutting wheel drives, which are each arranged on one side of the bearing plate, and at least two cutting wheels, which are each mounted on a cutting wheel drive and are rotated by it are drivable, according to the preamble of claim 1.
- the invention also relates to a method for changing a cutting width of a trench cutter, wherein existing first cutting wheels with a first cutting wheel width are changed and replaced by second cutting wheels with a second cutting wheel width, which is different from the first cutting wheel width, according to the preamble of claim 14.
- a generic trench cutter with an end shield and a cutter wheel drive with cutter wheel arranged on it since Lich is known, for example, from EP 1 666671 B1.
- the cutting wheel drive is designed as a gear.
- a drive torque is transmitted from a drive motor mounted on the milling frame to transverse drive shafts via a central drive shaft in the end shield, which split the drive torque between the two cutting wheel drives.
- the milling wheel drives are usually designed as reduction gears.
- shield as cutting wheel drives hub motors directly to the bearing, which drive the respective cutting wheel directly or via an associated gear.
- the cutting wheel drives protrude into a hollow hub area of the drum-shaped cutting wheels, which are mounted on the cutting wheel drives via a rotary bearing arrangement.
- the milling wheels are designed in such a way that they reach up to the end shield for effective milling.
- the axial length of the milling wheels determines the width of the milling slot.
- the width of the milling slot results from twice the length of the milling wheels plus the width of the end shield.
- Diaphragm wall cutters are used to create diaphragm walls or cut-off walls in the ground, with the cut trench formed in the ground being filled with a hardening concrete or sealing compound.
- a typical slot width is about 1 meter, although depending on the respective requirements, slot wall widths of up to 2 meters and more must be created.
- the invention is based on the task of specifying a trench wall cutter and a method with which different trench widths can be produced particularly efficiently.
- the object is achieved on the one hand by a trench cutter having the features of claim 1 and on the other by a method having the features of claim 14 .
- Preferred embodiments of the invention are specified in the respective dependent claims.
- the trench wall cutter according to the invention is characterized in that the cutting wheel drives are each designed as a detachable cutting wheel drive module and that an adapter module is arranged between the bearing plate and each cutting wheel drive module, which can be detached and exchanged to adapt to different cutting wheel widths.
- a basic idea of the invention is to construct the trench wall cutter in modular form with regard to the milling wheel drive and its holder. If the diaphragm wall width is changed, not only the cutting wheels with a changed diaphragm width are exchanged. Rather, it is provided according to the invention, when changing the cutting width of a cutting wheel, the position of the cutting wheel drive is also changed and adjusted. This is achieved according to the invention on the one hand in that each cutting wheel drive is designed as a cutting wheel drive module which can be easily assembled and disassembled as a unit.
- a cutting wheel drive module within the meaning of the inventions can be a drive motor flanged to the bearing plate with or without a gear or just a gear which is driven via a drive shaft in the bearing plate.
- an adapter module is arranged between the bearing plate and the cutting wheel drive module, which can easily be changed and adjusted accordingly when cutting wheels with a different cutting width are exchanged.
- the adapter module can each have a correspondingly adapted axial width, so that the existing milling wheel drive module is preferably further loaded centrally, ie the point of application of the forces caused by the milling wheels act approximately centrally on the milling wheel drive and a corresponding pivot bearing arrangement. In this way, undesired transverse forces and tilting moments on the cutting wheel drive can be largely avoided, so that maintenance costs are reduced and a long service life of the motor and/or the gear is ensured.
- the same milling wheel drive modules can thus be used for different milling widths with essentially the same favorable load.
- the formation of the cutting wheel drive modules and the rotary bearing arrangements can be the same for both sides of the bearing plate, so that only a few components are required for a large number of trench wall cutters with different trench widths. If necessary, the milling wheel drive modules can also be exchanged and/or changed in a simple manner.
- a preferred embodiment of the invention consists in that the cutting wheel drive module has a sleeve-shaped housing on which a drum-shaped cutting wheel is rotatably mounted via a rotary bearing arrangement.
- the rotary bearing arrangement preferably has roller bearings, which are preferably positioned in an O arrangement on the outer circumference of the sleeve-shaped housing. With this arrangement, the bearings can have a long service life.
- the rotary bearing can be arranged on an outside or on an inside of a housing wall.
- an axial center of the rotary bearing arrangement is aligned with an axial center of the cutting wheels.
- the position of the cutting wheels on the cutting wheel drives can be selected in such a way that the cutting wheels have to reach the end shield with their inner edge for effective cutting. With an increase in the width of the cutting wheel, a center of the cutting wheel is thus shifted further outwards.
- the cutting wheel drive module can track the shift in center.
- the enlargement of the adapter module can correspond to about half the length of the cutting wheel extension. Unfavorable lateral and tilting forces on the gear arrangement are avoided in this way, since the operating forces can be introduced as symmetrically as possible into the bearing arrangement during milling.
- a damping element for damping torque shocks can be arranged between the output shaft and the cutting wheel.
- the adapter module is ring-shaped with a central passage for a shaft to pass through.
- the adapter module can be solid.
- the adapter module can be easily detached via screw connections on the one hand with the cutting wheel drive module and on the other hand with the bearing plate.
- a further expedient embodiment of the invention is that the adapter module is box-shaped with an inner cavity.
- the adapter module is preferably constructed from a steel material and in particular welded, but light metal materials can also be used.
- a particularly preferred embodiment is that the box-shaped adapter module has two side plates, an axially circumferential peripheral wall and a sleeve for forming a central passage.
- a hollow adapter module with an inner closed cavity can thus be manufactured in a simple manner, in particular by welding.
- the adapter module has at least one additional through-channel for oil to pass through. This means that oil does not have to pass solely through the center passage of the adapter module between the bearing plate and the cutting wheel drive module, particularly if this has a gear.
- An oil channel is preferably arranged in a lower area of the adapter module and/or in an upper area.
- the cutting wheel drive modules have a gear which can be driven via a central drive shaft in the end shield.
- a reduction gear In the housing of the cutting wheel drive module there is an arrangement of toothed elements, through which in particular a reduction gear is formed.
- the milling wheel drive module has a drive motor arranged on the bearing plate, with or without a gear.
- the cutting wheel drive module can in particular be designed as a direct drive for directly driving the cutting wheel attached to it.
- the drive on this drive is basically arbitrary, with an electric motor in particular is compact and easy to assemble.
- the direct drive can be gear stage with or without Ge, in particular a reduction gear.
- the milling drive module it is advantageous for the milling drive module to have an input shaft on the side of the end shield and an axially opposite output shaft, which is detachably connected to the associated milling wheel.
- the cutting wheel drive module thus has a defined input element and a defined output element for torque transmission.
- An input shaft or an output shaft within the meaning of the invention can also be understood to mean a ring gear or a gear wheel without a pronounced longitudinal extension.
- the input shaft and/or the output shaft preferably have an easily detachable, torque-transmitting connection, such as an axial spline connection. This allows easy assembly and disassembly of the milling wheel drive module.
- an exchangeable adapter shaft is detachably arranged between the central drive shaft and the respective cutting wheel drive module.
- the length of the detachable adapter shaft is dependent on the width of the adapter module.
- a good torque transmission can continue to be achieved from the central drive shaft in the end shield to the input shaft of the cutting wheel drive module.
- a bevel gear stage can be arranged in the bearing plate at the lower end of the central drive shaft, with which the torque is transmitted from the substantially vertically directed central drive shaft to the substantially horizontally directed distribution shafts.
- a further advantageous embodiment of the invention lies in the fact that it has a milling frame, on the underside of which at least one bearing plate with the milling wheel drive modules is arranged.
- a milling frame on the underside of which at least one bearing plate with the milling wheel drive modules is arranged.
- two side-by-side end shields are arranged on the underside of the milling machine frame.
- two pairs of cutter wheels can be arranged compactly at the lower end of the cutter frame.
- a hydraulic motor is provided as a drive for a high torque.
- a trench wall cutter 10 has a cutter frame 12, only a lower part of the cutter frame 12 being shown in the figure.
- a drive shaft 16 is indicated schematically with its drive axle, which is driven in rotation by a drive motor, not shown, on the milling cutter frame 12 .
- the drive shaft 16 extends within an interior space of the hollow bearing plate 14.
- the drive torque from the drive shaft 16, which is directed essentially vertically during operation, is transmitted approximately at right angles to the two laterally directed adapter shafts 70 via a bevel gear (not shown).
- Drive the cutting wheels 20 distributed.
- the adapter shafts 70 also represent an input for a gear 31 of a milling wheel drive module 30.
- a drum-like milling wheel drive module 30 is detachably attached to each side of the bearing plate 14, on each of which a milling wheel 20 is rotatably mounted via a pivot bearing arrangement 40 with roller bearings 42.
- each cutting wheel drive module 30 has a drum-shaped housing 32, on the inside of which a ring gear 33 is formed.
- a planetary carrier 36 is rotatably mounted about an axis of rotation 21 of the cutting wheels 20 via the pivot bearing arrangement 40 .
- a plurality of planet gears 34 are rotatably mounted on the planet carrier 36, which on the one hand mesh with a central drive pinion on the adapter shaft 70 and on the other hand with the ring gear 33 with internal teeth, so that the tarpaulin carrier 36 can be rotated as a reduction stage about the axis of rotation 21 in rotation.
- a cylindrical base body 22 of the cutting wheel 20 is attached in a rotationally fixed manner to an outer side of the planetary carrier 36 via an annular elastic damping element 28 .
- the rotary drive arrangement 40 is located approximately in an axial center plane which is perpendicular to the axis of rotation 21 and centered on the axial width of each cutting wheel 20 .
- the associated cutting wheel 20 is thus attached to the planetary carrier 36 .
- annular adapter module 50 When mounting a cutting wheel 20 with a different axial wheel width, an annular adapter module 50 can be changed, which is arranged between the bearing plate 14 and the respective cutting wheel drive module 30 .
- each adapter module 50 is formed from a first side plate 52, which is detachably flanged to the associated side of the bearing plate 14, and a second side plate 54, the two side plates 52, 54 having an annular outer peripheral wall 56 and a central Sleeve 58 for forming a central passage 60 for the adapter shaft 70 are preferably formed by welding.
- a central annular cavity 62 is thereby formed in the adapter module 50, as a result of which a relatively light construction and a small oil holding volume in the central passage 60 are achieved.
- the cutting wheel drive module 30 is preferably releasably attached via screw connections.
- An interior of the end shield 14 and an interior of the housing 32 are filled with oil and are in fluid communication with one another via the central passage 60 and additional through-channels 64 in or along the peripheral wall 56 of the respective adapter module 50 .
- the common gear space formed in this way is at least partially filled with gear oil.
- the existing cutting wheel 20 is removed along with the respective cutting wheel drive module 30 and the associated adapter module 50 are detached from the end shield 40.
- a suitable, larger adapter module 50 is then used and the existing milling wheel drive module 30 is attached again to the bearing plate 14 together with the adapter module 50 .
- the modified cutting wheel 20 can then be mounted on the cutting wheel drive module 30 . In this way, a central arrangement between the rotary bearing arrangement 40 of the cutting wheel drive module 30 and the cutting wheel 20 can continue to exist, which means that favorable load conditions are always achieved.
- a corresponding smaller adapter module 50 with a smaller axial length can be mounted on the bearing plate 14 or this can be omitted entirely.
- an adapter shaft 70 with an adjusted axial length is installed between the drive shaft 16 and the cutting wheel drive module 30 .
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020237034675A KR20230164081A (en) | 2021-04-12 | 2022-03-31 | Diaphragm wall cutter and how to change the cutting width of the diaphragm wall cutter |
CN202280028151.0A CN117377801A (en) | 2021-04-12 | 2022-03-31 | Slotted wall milling machine and method for changing milling width of slotted wall milling machine |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP21167909.7 | 2021-04-12 | ||
EP21167909.7A EP4074898B1 (en) | 2021-04-12 | 2021-04-12 | Foundation slot cutter and method for changing the cutting width of the cutter |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022218719A1 true WO2022218719A1 (en) | 2022-10-20 |
Family
ID=75477973
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2022/058563 WO2022218719A1 (en) | 2021-04-12 | 2022-03-31 | Slurry wall cutter and method for changing a cutting width of a slurry wall cutter |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP4074898B1 (en) |
KR (1) | KR20230164081A (en) |
CN (1) | CN117377801A (en) |
WO (1) | WO2022218719A1 (en) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02104817A (en) * | 1988-10-12 | 1990-04-17 | Toukiyouwan Oudan Doro Kk | Groove slot excavator |
US6626500B1 (en) * | 1998-12-11 | 2003-09-30 | Rn Cribb Pty Limited | Rotary drum cutting head |
EP1882781A1 (en) * | 2006-07-28 | 2008-01-30 | Compagnie du Sol | Cutting head for a digging machine |
EP1666671B1 (en) | 2004-12-03 | 2015-11-04 | BAUER Maschinen GmbH | Milling device for trench walls |
EP1637794B1 (en) | 2004-09-16 | 2015-11-11 | BAUER Maschinen GmbH | Milling device for trench walls |
-
2021
- 2021-04-12 EP EP21167909.7A patent/EP4074898B1/en active Active
-
2022
- 2022-03-31 KR KR1020237034675A patent/KR20230164081A/en unknown
- 2022-03-31 WO PCT/EP2022/058563 patent/WO2022218719A1/en active Application Filing
- 2022-03-31 CN CN202280028151.0A patent/CN117377801A/en active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02104817A (en) * | 1988-10-12 | 1990-04-17 | Toukiyouwan Oudan Doro Kk | Groove slot excavator |
US6626500B1 (en) * | 1998-12-11 | 2003-09-30 | Rn Cribb Pty Limited | Rotary drum cutting head |
EP1637794B1 (en) | 2004-09-16 | 2015-11-11 | BAUER Maschinen GmbH | Milling device for trench walls |
EP1666671B1 (en) | 2004-12-03 | 2015-11-04 | BAUER Maschinen GmbH | Milling device for trench walls |
EP1882781A1 (en) * | 2006-07-28 | 2008-01-30 | Compagnie du Sol | Cutting head for a digging machine |
Also Published As
Publication number | Publication date |
---|---|
CN117377801A (en) | 2024-01-09 |
EP4074898A1 (en) | 2022-10-19 |
EP4074898C0 (en) | 2023-11-22 |
EP4074898B1 (en) | 2023-11-22 |
KR20230164081A (en) | 2023-12-01 |
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