EP1640509B2 - Method of making a sloted wall in ground and device therefor - Google Patents

Method of making a sloted wall in ground and device therefor Download PDF

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Publication number
EP1640509B2
EP1640509B2 EP04019987.9A EP04019987A EP1640509B2 EP 1640509 B2 EP1640509 B2 EP 1640509B2 EP 04019987 A EP04019987 A EP 04019987A EP 1640509 B2 EP1640509 B2 EP 1640509B2
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EP
European Patent Office
Prior art keywords
frame
cutting
mixing
milling
mixing wheels
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.)
Expired - Fee Related
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EP04019987.9A
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German (de)
French (fr)
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EP1640509B1 (en
EP1640509A1 (en
Inventor
Erwin Emil Dipl.-Ing. Dipl.-Wirtsch.-Ing. Stölzer
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BAUER Maschinen GmbH
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BAUER Maschinen GmbH
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    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00Excavations; Bordering of excavations; Making embankments
    • E02D17/13Foundation slots or slits; Implements for making these slots or slits
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02FDREDGING; SOIL-SHIFTING
    • E02F3/00Dredgers; Soil-shifting machines
    • E02F3/04Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/18Dredgers; Soil-shifting machines mechanically-driven with digging wheels turning round an axis, e.g. bucket-type wheels
    • E02F3/20Dredgers; 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
    • E02F3/205Dredgers; 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

Description

  • The invention relates to a device for creating a slot wall in the ground. The invention further relates to a method for creating a slot wall in the ground.
  • A method for producing a slot wall in the bottom is from DE 195 30 827 C2 known. In this so-called two-phase process, a milling slot is excavated in a first phase and the excavated soil excavation of the milling slot is conveyed to above ground. The resulting milling slot is filled with a support suspension and thereby supported. In a second phase after the sinking of the milling slot, a hardening suspension is introduced into the slot while displacing the support suspension.
  • At one of the DE 41 41 629 C2 known one-phase process, the slot is supported from the beginning by a hardening suspension, which is prepared by mixing excavated soil material with a settable liquid over-days.
  • To carry out these known methods can from the DE 34 24 999 C2 known trench wall milling application find. These known trench wall cutters have a trimming frame as well as at this bottom, ie bottom-mounted, rotating drivable cutting wheels, which serve for clearing of soil material on the slot bottom. The cleared soil material is supplied by the cutting wheels attached to the milling frame suction and transported to the surface.
  • From the German patent application with the file number 103 08 538 For example, another method of making a trench wall is known. In this so-called "mixed-in-place" process, the hardening suspension is not produced outside the slot but directly in the slot itself. For this purpose, ground material removed by the cutting wheels is, as it were, mixed with the settable liquid "in situ" by the effect of the cutting wheels in the milling slot, thereby producing a hardening liquid-soil mixture. In this method, the mixed with the curable liquid, cleared soil material is at least partially left in the milling slot, where it can harden to form the slot wall. This eliminates the need to elaborate the entire cleared soil material by pumping equipment consuming to overground.
  • An apparatus for creating a slot wall according to the preamble of claim 1 is apparent EP-A-0811724 out.
  • The object of the invention is to provide a device and a method with which slot walls of particularly high quality can be created.
  • This object is achieved by a device having the features of claim 1 and a method having the features of claim 12. Preferred embodiments are given in the respective dependent claims.
  • The invention is on the one hand in a device for creating a trench wall in the ground, with a frame, at least one arranged below the frame, lower milling / mixing wheel, at least one further, arranged at the top of the frame, upper milling / mixing wheel, wherein the frame in an intermediate region between the upper milling / mixing wheel and the lower milling / mixing wheel of smaller cross-section relative to the milling cross-section of the at least one lower milling / mixing wheel is formed.
  • A first basic idea of the invention can be seen therein, both below, i. on the bottom side, to provide milling / mixing wheels on the milling frame as well as on top of the milling frame. The at least one lower milling / mixing wheel is preferably projecting in the direction of advance and the at least one upper milling / mixing wheel protrudes in the direction opposite to the direction of advance on the frame. Due to the mutual arrangement of milling / mixing wheels on the frame, a particularly good comminution and mixing of milled ground material is made possible. In particular, in the case of an "in situ" suspension preparation in the slot with the device according to the invention, a particularly high suspension homogeneity can be achieved and consequently a particularly high diaphragm wall quality can be obtained. In addition, a particularly high milling progress can be achieved by a combined milling action of the upper and lower milling / mixing wheels.
  • Another basic idea of the invention can be seen in forming the frame at least partially with a cross section which is smaller than the milling cross section of the at least one lower milling / mixing wheel. As a result, a mixing and transport area is created in the slot between the upper and lower milling / mixing wheels, through which a material exchange between the upper and lower milling / mixing wheels is made possible. Since a flow can be generated in this mixing and transport area both from the upper and from the lower milling / mixing wheel, a particularly effective material mixing takes place in this area, whereby the suspension homogeneity is further increased. For a particularly good material exchange, the frame in the intermediate region is preferably also of smaller cross-section relative to the milling cross-section of the at least one upper milling / mixing wheel.
  • The device according to the invention can also be referred to as a milling cutter, in particular as a trench wall cutter. The milling / mixing wheels can circumferentially have cutting teeth, roller chisels or other tillage tools for removing pending soil material. However, at least some of the milling / mixing wheels can in principle be designed without such tillage tools, in which case the mixing effect of these wheels in the foreground stands. To further improve the mixing effect, at least some of the milling / mixing wheels can be provided with additional mixing elements, for example with mixing paddles. In principle, it is possible for the at least one lower milling / mixing wheel and the at least one upper milling / mixing wheel to be of identical construction, wherein the wheels may also be designed to be mirror-symmetrical to one another for opposite rotational operation. However, it is particularly preferred that only the lower milling / mixing wheel has peripherally tillage tools and / or that the at least one upper milling / mixing wheel has additional mixing elements.
  • In principle, the cross-sectionally smaller intermediate region of the frame can be formed, for example, by a step in the frame. However, it is particularly preferred that the frame is formed waisted between the upper milling / mixing wheel and the lower milling / mixing wheel. This may in particular be understood to mean that the cross-section of the frame continuously tapers in the direction of advance in at least one spatial direction, starting from the upper milling / mixing wheel, and widens continuously again in front of the lower milling / mixing wheel. In the context of the invention, a cross-section can in particular be understood as a section perpendicular to the direction of advance of the milling cutter.
  • The milling cross section of the at least one lower milling / mixing wheel is suitably configured at least approximately rectangular. It is particularly preferred that the cross-sectional width of the frame in the intermediate region is three quarters or less, in particular half or less, the Fräsquerschnittsbreite the at least one lower milling / mixing wheel and / or that the cross-sectional length of the frame in the intermediate region three quarters or less, in particular half or less, the Fräsquerschnittslänge the at least one lower milling / mixing wheel. As a result, a mixing and transport area is created around the intermediate area, in which a particularly effective mixing of the suspension can take place. The width and length specifications may in particular be related to an at least approximately rectangular milling cross section, wherein the frame itself, in particular in the intermediate region, does not necessarily have to be formed with a rectangular cross section. In the case of a non-rectangular frame, the cross-sectional width and length may be understood to mean the cross-sectional dimensions of the frame parallel to the sides of the approximately rectangular cross-section. If several lower milling / mixing wheels are present, the total milling cross section of all these wheels can be understood by the milling cross section of the at least one lower milling / mixing wheel. Analog can be understood by the milling cross section of the at least one upper milling / mixing wheel of the total milling cross section of all upper milling / mixing wheels. Advantageously, the milling cross section of the at least one upper milling / mixing wheel is also at least approximately rectangular and in particular at least approximately identical to the milling cross section of the at least one lower milling / mixing wheel.
  • A particularly suitable and structurally particularly simple device for receiving the forces occurring during milling operation is characterized in that the frame and / or the milling / mixing wheels mirror-symmetrical, in particular to a plane perpendicular to the advancing direction mirror plane and / or to a mirror plane extending in the advancing direction , are formed. The direction of advancement can be understood as the direction in which the mill according to the invention moves in the slot position, i. the direction in which the mill is sunk.
  • A further preferred embodiment of the invention is that two lower milling / mixing wheels and two upper milling / mixing wheels are provided in particular axially parallel, and that the frame in particular X-like with a middle frame part and four thereon preferably obliquely arranged to the advancing direction Frässchilden on where the milling / mixing wheels are mounted, is formed. According to this embodiment, the frame is designed like a cross, with at least one milling / mixing wheel, in each case a pair of wheels, being mounted at each end of the four legs of the cross. The legs of the cross are preferably formed by the milling blades.
  • It is also particularly advantageous that the milling / mixing wheels are designed as pairs of wheels with two individual wheels, which are in particular arranged coaxially on both sides of a milling blade of the frame. The individual milling / mixing wheels can also have more than two individual wheels. In principle, any number of milling / mixing wheels can be provided according to the invention.
  • The device according to the invention is particularly suitable for a "mixed-in-place" slotted wall method in which the suspension hardening to the slot wall is not produced outside the slitting slot, but directly in the slitting slot itself by action of the milling / mixing wheels of abraded soil material and a settable liquid becomes. In particular, in this context, it is particularly advantageous that a liquid supply means for supplying a settable liquid is provided in the slot on the underside of the frame, in particular between two adjacent lower milling / mixing wheels. The arrangement of the liquid supply between the two milling / mixing wheels allows a particularly uniform mixing of the liquid with the soil material on both milling / mixing wheels. In principle, however, the liquid supply device can also be formed separately from the frame and / or the milling cutter.
  • Another advantageous aspect of the invention is that at least at the lower milling / mixing wheel cutting teeth are provided for clearing pending soil material, and that on the frame Clearing plates are provided, which protrude to clear the cutting teeth of cleared soil material between adjacent cutting teeth. During operation of the milling / mixing wheels, the cutting teeth are guided past the clearing plates, wherein soil adhering to the cutting teeth is scraped off by the clearing plates. This allows a particularly good milling progress. The Räumplatten can be provided in particular for clearing trained as folding teeth milling teeth, which are arranged for processing of soil material below the milling blade pivotally mounted on the milling / mixing wheels.
  • For directional control of the device when sinking can be inventively provided that preferably hydraulically actuated control stamp are provided on the frame, which are extendable to rest on the inner walls of the slot transverse to the advancing direction, in particular approximately parallel to the axes of rotation of the milling / mixing wheels. By extending this tax stamp to the inner walls of the slot, the frame can be pressed off the walls and its position, in particular its inclination in the slot, be changed, whereby the further Abteufrichtung is changed. Preferably, the control stamp on round, in particular approximately circular or oval support surfaces, which may also be convex. In particular, the tax stamps may be mushroom-shaped. The tax stamps are suitably arranged on stamp holders, which in turn are in turn arranged on the frame and in particular protrude laterally from this. At these stamp holders drives, in particular hydraulic cylinders, can be provided for extending and retracting the control stamp. In principle, the control stamps can be extendable in any direction on the frame, it being preferred that the control stamps can be extended approximately parallel to the axes of rotation of the milling / mixing wheels. The tax stamps are preferably arranged on the middle frame part in the intermediate region.
  • Advantageously, two tax stamps are provided on each tax stamp holder, which form a tax stamp pair. The two tax stamps of a pair of tax stamps are advantageously arranged coaxially and / or extendable on opposite sides of the frame from the frame. It is particularly preferred that on both sides of the frame in each case two pairs of tax stamps are arranged one above the other. Advantageously, two pairs of tax stamps are positioned at the same height on the frame.
  • For lowering and pulling the device is preferred that a rope and / or a telescopic drill pipe is provided, on which the frame is suspended at its upper side. The telescopic drill pipe can be designed in particular as a Kelly bar. Advantageously, a headband is provided on the rope or on the drill pipe to which the frame is mounted.
  • A particularly versatile device according to the invention is characterized in that the milling cross-section of the at least one upper milling / mixing wheel and / or the at least one lower milling / mixing wheel is variable. For this purpose, for example, an adjusting device may be provided, with which the axial spacing of the upper milling / mixing wheels and / or the lower milling / mixing wheels is adjustable. Alternatively or additionally, with the adjusting device and the cutting radius of the respective milling / mixing wheels can be changed.
  • If several, in particular two, lower milling / mixing wheels are provided, these are suitably arranged side by side, i. their axes of rotation are, in particular with respect to the downwardly pointing direction of advance, at the same height. Likewise, provided that a plurality of upper milling / mixing wheels are provided, these are also preferably arranged next to one another.
  • A further aspect of the invention can be seen in a method for creating a trench wall in the ground, in which a trench cutter with a frame, two bottom of the frame next to each other, lower milling / mixing wheels and two on top of the frame arranged side by side, upper milling / Milling wheels is provided, the Fräs- / mixing wheels are rotated by means of a rotary drive, and the trench wall cutter drilled in the ground and pulled back after reaching a final depth, with both the upper upper milling / mixing wheels and the two lower milling / Mixing wheels are driven in opposite directions by means of the rotary drive.
  • The inventive method can be carried out in particular by means of the device according to the invention, wherein the advantages described in this context can be achieved.
  • A basic idea of the method according to the invention can be seen in the fact that a trench wall cutter with at least two lower milling / mixing wheels and at least two upper milling / mixing wheels is provided, the two lower milling / mixing wheels having opposite directions of rotation and also the two upper milling wheels. / Mixing wheels are driven in opposite directions of rotation. By this opposite operation of both the upper and the lower milling / mixing wheels bleeding of the trench wall cutter can be largely prevented, which geometrically very well defined cutting slots can be made. At the same time there is a particularly efficient removal of processed at the bottom of the slot soil material. Finally, a particularly good mixing of the processed soil material with a settable liquid to form a curable suspension, especially if the settable liquid fed centrally between the two lower milling / mixing wheels and / or between the two upper milling / mixing wheels in the milling slot becomes. According to the invention of opposing operation of the milling / mixing wheels basically be provided both when sinking and when pulling the trench wall cutter. The milling / mixing wheels can also be shut down when pulling the trench wall cutter. For a particularly good mixing of the suspension, it is advantageous that the milling / mixing wheels are driven to rotate while pulling, the direction of rotation of the milling / mixing wheels can also be changed in principle alternately.
  • The efficiency of Materialabtransportes in the milling slot can be improved by the fact that when the trench wall cutter at the bottom of the slot excavated soil material is carried away by the rotation of the lower milling / mixing wheels of the milling center. This embodiment is particularly advantageous when the processed soil material is not sucked out of the milling slot, but remains for "in situ" mixing with a settable liquid in the milling slot. According to this embodiment, the lower milling / mixing wheel arranged clockwise in the operating state of the miller in the front view is operated in the clockwise direction and the lower milling / mixing wheel arranged in the operating state of the miller to the right in the counterclockwise direction. The processed soil material is preferably conveyed into the mixing and transport area, which is formed around the frame in its intermediate area. This ensures a particularly effective mixing of the soil material with the settable liquid. At the same time supports the tangential movement of the lower milling / mixing wheels on the inner walls of the Frässchlitzes the Abteufbewegung the trench wall cutter in the advancing direction.
  • In principle, it is possible to operate the upper milling / mixing wheels in any direction of rotation compared to the milling / mixing wheels underneath. For example, it may be provided that the milling / mixing wheels superposed on the frame are each rotated in opposite directions, i. that the two arranged on the left frame milling / mixing wheels are rotated with different directions of rotation, as well as the two right on the frame arranged milling / mixing wheels. However, it is particularly preferred that the milling and mixing wheels lying one on top of the frame are driven in the same direction. In this case, a particularly good material removal is guaranteed.
  • In principle, it is also possible to select the direction of rotation of the milling / mixing wheels when pulling the trench wall cutter equal to the direction of rotation when sinking. However, it is particularly preferred that the direction of rotation of at least the lower milling / mixing wheels for pulling the trench wall cutter is reversed. Suitably, the direction of rotation of the upper milling / mixing wheels for pulling the trench wall cutter is reversed. The resulting change in the flow profile on the trench wall cutter can further improve suspension mixing.
  • With regard to the direction of rotation of the milling / mixing wheels, it is advantageous that the milling / mixing wheels perform due to their rotational movement on the inner walls of the slot a tangential movement, which is directed opposite to the current axial movement of the trench wall cutter. In this way, the rotational movement of the milling / mixing wheels supports the axial Abteuf- and pulling movement of the trench wall cutter and axial drive means for sinking and pulling the trench wall cutter can be dimensioned correspondingly less expensive.
  • The invention will be explained in more detail with reference to preferred embodiments, which are illustrated in the figures. In the figures show schematically:
  • Fig. 1
    a front view of an apparatus according to the invention for creating a slot in the ground;
    Fig. 2
    a side view of the device Fig. 1 ;
    Fig. 3
    a front view of another milling cutter according to the invention for explaining the direction of rotation of the milling / mixing wheels when sinking the miller;
    Fig. 4
    a front view of the router off Fig. 3 to explain the direction of rotation of the milling / mixing wheels when pulling the cutter; and
    Fig. 5
    a side view of a construction equipment with a device according to the invention.
  • Equivalent elements are identified in all figures with the same reference numerals.
  • An inventive device for creating a slot wall in the ground, which can also be referred to as a trench wall cutter 1, is in the Fig. 1 and 2 shown. The trench wall cutter 1 has a supporting frame 10, at the lower, ie bottom end two lower milling / mixing wheels 21, 22 are rotatably mounted at the same height. On its upper side, two upper milling / mixing wheels 31, 32 are likewise rotatably mounted at the same height on the frame 10.
  • The milling / mixing wheels 21, 22, 31, 32 are all formed as pairs of wheels with two individual wheels, which are both coaxial on either side of a milling blade 24, 25, 34, 35 are mounted. This is in Fig. 2 shown on the example of the upper milling / mixing wheel 32, the two individual wheels 37, 38 are arranged on both sides of the milling blade 35. Further, this is in Fig. 2 shown by the example of the lower milling / mixing wheel 22, the two individual wheels 27, 28 are rotatably mounted on both sides of the milling blade 25. The remaining milling / mixing wheels 21, 31 are formed in a similar manner as pairs of wheels.
  • The frame 10 has a central center Frame middle part 15 on. This frame middle part 15 is in the form of a straight prism with a hexagonal base. At its two upper, adjacent lateral surfaces are on the central frame part 15, the two Frässchilde 34, 35 of the upper milling / mixing wheels 31, 32 out. At its two lower, adjacent lateral surfaces are on the central frame part 15, the two Frässchilde 24, 25 of the two lower milling / mixing wheels 21, 22 out. The milling blades 24, 25, 34, 35, which can be regarded as elements of the frame 10, extend at an angle, ie not parallel to the advancing direction 80, which represents the removal direction of the trench wall cutter 1. The milling blades 24, 25, 34, 35 together with the frame center part 15 a cross-like or X-like structure, wherein the cross legs of the Frässchilden 24, 25, 34, 35 are formed. The cross arms formed by the milling blades 24, 25, 34, 35 are not arranged at right angles to each other. Rather, the included by the Frässchilden 24, 25 angle as well as the included by the Frässchilden 34, 35 angle is less than 90 °.
  • On the circumference of the milling / mixing wheels 21, 22, 31, 32 fixed cutting teeth 42 are arranged with a cutting edge for releasing pending soil material. Their respective milling blade 24, 25, 34, 35 adjacent to the milling / mixing wheels 21, 22, 31, 32 next to it as folding teeth 43 formed cutting teeth. These folding teeth 43 are pivotable by means of a pivot drive in a peripheral region of the respective Frässchildes 24, 25, 34, 35. In particular, by this folding teeth 43 below the milling blades 24, 25 befindliches soil material can be processed.
  • By operating the lower milling / mixing wheels 21, 22 below the trench wall 1 befindliches soil material is processed in an approximately rectangular milling cross-section. This milling cross-section has a Fräsquerschnittsbreite BF and a Fräsquerschnittslänge LF, wherein the width here on the Drehachsrichtung the lower milling / mixing wheels 21, 22 is related. The axes of rotation of the lower milling / mixing wheels 21, 22 and the axes of rotation of the upper milling / mixing wheels 31, 32 are arranged parallel to each other. The center distance of the axes of rotation of the two lower milling / mixing wheels 21, 22 corresponds to the center distance of the axes of rotation of the two upper milling / mixing wheels 31, 32. The upper milling / mixing 31 is based on the downward drive direction 80 above the lower milling - / mixing wheel 21 arranged and the upper milling / mixing wheel 32 above the lower milling / mixing wheel 22. In this case, all milling / mixing wheels 21, 22, 31, 32 have the same wheel diameter. Due to this geometric arrangement and design of the milling / mixing wheels 21, 22, 31, 32, the milling cross section of the upper milling / mixing wheels 31, 32 corresponds to the milling cross section of the lower milling / mixing wheels 21, 22nd
  • In an intermediate region 12, which is provided on the frame central part 15, the frame 10 is formed with a taper, at which this cross section smaller in relation to the milling cross section of both the lower milling / mixing wheels 21, 22 and the upper milling / mixing wheels 31, 32nd is. As a result, a mixing and / or transport region 54 is formed at the intermediate region 12 between the inner walls 4, 4 'of the slot and the frame 10, in which a thorough mixing of processed soil material with a settable liquid can take place. For supplying the settable liquid into the milling slot, a liquid supply device 50 designed as a nozzle is provided in the milling center 7, between the two lower milling / mixing wheels 21, 22.
  • As in Fig. 1 can be seen, the frame 10 is formed to form the tapered intermediate portion 12 in its cross-sectional length LR, starting from the Frässchilden 24, 25, 34, 35, waisted. As Fig. 2 it can be seen, the cross-sectional width BR of the frame 10 over its height, however, is substantially constant. In the intermediate region 12 on the middle frame part 15, the cross-sectional width BR of the frame 10 is about 0.45 times the Fräsquerschnittsbreite BF and the cross-sectional length LR of the frame 10 is about 0.45 times the Fräsquerschnittslänge LF.
  • The frame 10 with its Frässchilden 24, 25, 34, 35 and the milling / mixing wheels 21, 22, 31, 32 is formed in three mirror-symmetrical, with a first mirror plane 75 is arranged perpendicular to the drive direction 80 and two further, mutually perpendicular mirror planes 71, 72 extend parallel to the drive direction 80.
  • At the Frässchilden 24, 25, 34, 35 are clearing plates 46, 46 'are provided, which project between adjacent cutting teeth 42 and / or folding teeth 43. For this purpose, the clearing plates 46, 46 'approximately radially to the milling / mixing wheels 21, 22, 31, 32 are arranged. Upon rotation of the milling / mixing wheels 21, 22, 31, 32, the cutting teeth 42 and / or the folding teeth 43 move past the clearing plates 46, 46 ', thereby abrading the cutting teeth 42 and / or the folding teeth 43 adhering soil material and The teeth are thus freed from the soil. To drive the milling / mixing wheels 21, 22, 31, 32, not shown in the figures, hydraulic drive motors are provided in the interior of the frame center part 15 of the frame 10.
  • On the side of the middle frame 15 of the frame 10 control stamp 60, 60 'are provided for directional control of the trench wall cutter 1 approximately parallel to the axes of rotation of the milling / mixing wheels 21, 22, 31, 32 and perpendicular to the drive direction 80 in an abutment position against the inner walls. 4 'of the slot extendable and retractable. The control stamps 60, 60 'are mushroom-shaped and have head-side convexly curved and in the front view circular support surfaces 62 for abutment against the inner walls 4' of the slot.
  • How out Fig. 2 it can be seen, the control stamp 60, 60 'coaxially in pairs on both sides of the Frame 10 is arranged, wherein one of the two control stamp 60 each tax stamp pair in the front view of Fig. 1 the front of the frame 10 and the other tax stamp 60 'is arranged behind the frame 10. How out Fig. 1 Furthermore, it can be seen, a total of four pairs of tax stamps are provided on the frame 10, of which two are mounted at the same height with respect to the downward drive direction 80 in the front view on the left and right of the middle frame 15. The two control stamps 60, 60 'of each pair of tax stamps are mounted in a common stamp holder 64 which surrounds the tax stamps 60, 60' in the manner of a sleeve. In the punch holder 64 are not shown in the figures, drives for extending and retracting the control stamp 60, 60 'are provided.
  • To hang the trench wall cutter 1 at one in the Fig. 1 and 2 not shown rope or a Kelly bar a headband 17 is provided, which is mounted on the top of the trench wall cutter 1 on the Frässchilden 24, 25.
  • The direction of rotation of the milling / mixing wheels 21, 22, 31, 32 of a trench wall cutter 1 according to the invention in carrying out a method according to the invention is in the 3 and 4 shown. Fig. 3 shows the state while sinking and Fig. 4 the state when pulling the trench wall cutter 1. The corresponding axial movement of the trench wall cutter 1 is indicated by the arrows R.
  • How out Fig. 3 it can be seen, the lower milling / mixing wheels 21, 22 are rotated when drilling the tiller so that abraded soil material and introduced into the milling slot, settable liquid from the milling center 7 is conveyed away to the inner walls 4 of the slot. For this purpose, the milling / mixing wheel 21 arranged on the left is rotated in the clockwise direction and the milling / mixing wheel 22 arranged on the right is rotated in the counterclockwise direction. The above the lower milling / mixing wheels 21, 22 arranged upper milling / mixing wheels 31, 32 are operated in the same direction as the respective underlying milling / mixing wheels 21, 22, ie the upper left milling / mixing 31 in the clockwise direction , the right upper milling / mixing wheel 32 arranged counterclockwise.
  • At the in Fig. 4 shown pulling the trench wall cutter 1, the direction of rotation of all milling / mixing wheels 21, 22, 31, 32 is reversed.
  • The direction of rotation of the milling / mixing wheels 21, 22, 31, 32 is chosen so that these wheels move tangentially at their point of contact with the inner walls 4 'of the slot due to their rotational movement of the axial movement R of the mill.
  • Fig. 5 shows a construction device 100 on which a trench wall cutter 1 according to the invention is arranged. The construction equipment has an undercarriage 102 configured as a caterpillar drive and a superstructure 101 rotatably mounted thereon. At the Oberwa conditions 101, a mast 110 is pivotally articulated about a horizontally extending axis. For pivoting the mast 110, a hydraulic actuating cylinder 112 is provided, which is directed on the one hand on the upper carriage 101 and on the other hand on a sleeve 114, which surrounds the mast 110 at least in sections.
  • To hang the trench wall cutter 1, a cable 90 is provided, which can be actuated by a winch 95 arranged on the superstructure 101. The expiring from the winch 95 rope 90 is guided over several pulleys 94, 94 ', 94' 'around the mast 110. From the uppermost guide pulley 94, the cable extends to a rope bottle 92 to which the trench wall cutter 1 is suspended. The rope 90 is reeved in the rope bottle 92 zweisträngig.
  • In addition to the cable 90, hydraulic and fluid lines 120 for supplying the trench wall cutter 1 with hydraulic fluid and settable liquid are also provided on the construction equipment. These hydraulic and fluid lines 120 are windable by means of a superstructure 101 arranged winch device 125. From there, they run over a likewise arranged on the mast 110 guide roller 124 to the trench wall 1.

Claims (15)

  1. Device for making a trench wall in the soil comprising
    - a frame (10),
    - at least two lower cutting/mixing wheels (21, 22) arranged at the bottom of the frame (10),
    - at least two further, upper cutting/mixing wheels (31, 32) arranged at the top of the frame (10),
    - the frame (10) is designed in an intermediate portion (12) between the upper cutting/mixing wheels (31, 32) and the lower cutting/mixing wheels (21, 22) with a smaller cross section with respect to the cutting cross section of the at least two lower cutting/mixing wheels (21, 22),
    characterized in that
    - the frame (10) is designed in X-shaped manner having a frame center part (15) and four cutting shields (24, 25, 34, 35) arranged thereon obliquely to an advance direction (80), on which the cutting/mixing wheels (21, 22, 31, 32) are supported, and
    - for driving the cutting/mixing wheels (21, 22, 31, 32) hydraulic drive motors are provided in the inside of the frame center part (15).
  2. Device according to claim 1,
    characterized in that
    the frame (10) located between the upper cutting/mixing wheels (31, 32) and the lower cutting/mixing wheels (21, 22) is designed in a waisted manner.
  3. Device according to any one of claims 1 or 2,
    characterized in that
    - in the intermediate portion (12) the cross sectional width (BR) of the frame (10) amounts to three fourths or less, in particular half or less of the cutting cross sectional width (BF) of the lower cutting/mixing wheels (21, 22), and/or
    - in the intermediate portion (12) the cross sectional length (LR) of the frame (10) amounts to three fourths or less, in particular half or less of the cutting cross sectional length (LF) of the lower cutting/mixing wheels (21, 22).
  4. Device according to any one of claims 1 to 3,
    characterized in that
    the frame (10) and/or the cutting/mixing wheels (21, 22, 31, 32) are designed mirror symmetrically, in particular with respect to a mirror plane (75) extending perpendicularly to the advance direction (80) and/or to a mirror plane (71, 72) extending in the advance direction (80).
  5. Device according to any one of claims 1 to 4,
    charaterized in that
    - the two lower cutting/mixing wheels (21, 22) and the two upper cutting/mixing wheels (31, 32) are provided paraxially.
  6. Device according to any one of claims 1 to 5,
    characterized in that
    at the bottom of the frame (10), in particular between two adjacent lower cutting/mixing wheels (21, 22), a liquid supply device (50) is provided for supplying a settable liquid to the trench.
  7. Device according to any one of claims 1 to 6,
    characterized in that
    - at least on the lower cutting/mixing wheels (21, 22) cutting teeth (42, 43) are provided for stripping out-cropping soil material, and
    - on the frame (10) scraper plates (46, 46') are provided which project between adjacent cutting teeth (42, 43) in order to free the cutting teeth (42, 43) from stripped soil material.
  8. Device according to any one of claims 1 to 7,
    characterized in that
    on the frame (10) preferably hydraulically operable control props (60, 60') are provided, which can be extended transversely to the advance direction (80), in particular approximately parallel to the rotational axes of the cutting/mixing wheels (21, 22, 31, 32), in order to abut against the inner walls (4, 4') of the trench.
  9. Device according to claim 8,
    characterized in that
    two pairs of control props are each arranged on top of each other on both sides of the frame (10).
  10. Device according to any one of claims 1 to 9,
    characterized in that
    a rope (90) and/or a telescopic drill rod is provided on which the frame (10) is suspended by its upper side.
  11. Device according to any one of claims 1 to 10,
    characterized in that
    the cutting cross section of the upper cutting/mixing wheels (31, 32) and/or of the lower cutting/mixing wheels (21, 22) can be changed.
  12. Method for making a trench wall in the soil, by means of a device according to any one of claims 1 to 11, wherein
    - a trench wall cutter (1) is provided having a frame (10), two lower cutting/mixing wheels (21, 22) arranged next to each other at the bottom of the frame (10) and two upper cutting/mixing wheels (31, 32) arranged next to each other at the top of the frame (10),
    - the cutting/mixing wheels (21, 22, 31, 32) are set into rotation by means of a rotary drive, and
    - the trench wall cutter (1) is sunk into the soil and retracted upon reaching a final depth,
    - with both the two upper cutting/mixing wheels (31, 32) and the two lower cutting/mixing wheels (21, 22) being each driven in opposite directions by the rotary drive.
  13. Method according to claim 12,
    characterized in that
    during the sinking of the trench wall cutter (1) soil material stripped at the bottom of the trench is removed from the cutter center (7) through the rotation of the lower cutting/mixing wheels (21, 22).
  14. Method according to any one of claims 12 or 13,
    characterized in that
    cutting/mixing wheels (21, 31; 22, 32) lying on top of each other on the frame (10) are driven in an opposite direction or in the same direction.
  15. Method according to any one of claims 12 to 14,
    characterized in that
    the sense of rotation of at least the lower cutting/mixing wheels (21, 22) is reversed for the retraction of the trench wall cutter (1).
EP04019987.9A 2004-08-23 2004-08-23 Method of making a sloted wall in ground and device therefor Expired - Fee Related EP1640509B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP04019987.9A EP1640509B2 (en) 2004-08-23 2004-08-23 Method of making a sloted wall in ground and device therefor

Applications Claiming Priority (9)

Application Number Priority Date Filing Date Title
DE200450005279 DE502004005279D1 (en) 2004-08-23 2004-08-23 Apparatus and method for creating a diaphragm wall in the ground
EP04019987.9A EP1640509B2 (en) 2004-08-23 2004-08-23 Method of making a sloted wall in ground and device therefor
CA 2513826 CA2513826C (en) 2004-08-23 2005-07-26 Device and method for making a trench wall in the soil
US11/189,848 US7363733B2 (en) 2004-08-23 2005-07-27 Device and method for making a trench wall in the soil
SG200504679A SG120233A1 (en) 2004-08-23 2005-07-28 Device and method for making a trench wall in the soil
RU2005125079/03A RU2304197C2 (en) 2004-08-23 2005-08-08 Device and method for barrier wall erection in ground
JP2005235603A JP4109687B2 (en) 2004-08-23 2005-08-16 Apparatus and method for providing groove walls in soil
KR20050076604A KR100738896B1 (en) 2004-08-23 2005-08-22 Device and Method for making a Trench Wall in the Soil
CN 200510096632 CN100434599C (en) 2004-08-23 2005-08-23 Method of making a sloted wall in ground and device therefor

Publications (3)

Publication Number Publication Date
EP1640509A1 EP1640509A1 (en) 2006-03-29
EP1640509B1 EP1640509B1 (en) 2007-10-17
EP1640509B2 true EP1640509B2 (en) 2014-03-05

Family

ID=34926270

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04019987.9A Expired - Fee Related EP1640509B2 (en) 2004-08-23 2004-08-23 Method of making a sloted wall in ground and device therefor

Country Status (9)

Country Link
US (1) US7363733B2 (en)
EP (1) EP1640509B2 (en)
JP (1) JP4109687B2 (en)
KR (1) KR100738896B1 (en)
CN (1) CN100434599C (en)
CA (1) CA2513826C (en)
DE (1) DE502004005279D1 (en)
RU (1) RU2304197C2 (en)
SG (1) SG120233A1 (en)

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Also Published As

Publication number Publication date
CN100434599C (en) 2008-11-19
RU2304197C2 (en) 2007-08-10
CN1739328A (en) 2006-03-01
JP4109687B2 (en) 2008-07-02
US7363733B2 (en) 2008-04-29
KR100738896B1 (en) 2007-07-12
EP1640509B1 (en) 2007-10-17
CA2513826C (en) 2009-05-12
DE502004005279D1 (en) 2007-11-29
US20060037218A1 (en) 2006-02-23
KR20060053194A (en) 2006-05-19
EP1640509A1 (en) 2006-03-29
RU2005125079A (en) 2007-02-20
CA2513826A1 (en) 2006-02-23
JP2006057446A (en) 2006-03-02
SG120233A1 (en) 2006-03-28

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