EP0849403B1 - Cutting wheel apparatus for excavating trenches - Google Patents

Cutting wheel apparatus for excavating trenches Download PDF

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Publication number
EP0849403B1
EP0849403B1 EP97119286A EP97119286A EP0849403B1 EP 0849403 B1 EP0849403 B1 EP 0849403B1 EP 97119286 A EP97119286 A EP 97119286A EP 97119286 A EP97119286 A EP 97119286A EP 0849403 B1 EP0849403 B1 EP 0849403B1
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EP
European Patent Office
Prior art keywords
cutting wheel
roller
axis
cutting
rotation
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 - Lifetime
Application number
EP97119286A
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German (de)
French (fr)
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EP0849403A1 (en
Inventor
Erwin Dipl.-Ing. Stötzer
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Bauer Spezialtiefbau GmbH
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Bauer Spezialtiefbau GmbH
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Publication of EP0849403A1 publication Critical patent/EP0849403A1/en
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    • 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
    • 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

Definitions

  • the invention relates to a trench cutter according to the Preamble of claim 1.
  • Trench wall cutters are used to manufacture trench walls for building pit securing, sealing and foundations.
  • the invention has the object of providing a trench cutter with cylindrical Abtragwerkmaschineen whose bearings have a particularly long service life.
  • the roller axis is substantially radial is directed to the axis of rotation of the cutting wheel, and that a Shell surface of the roller on one facing away from the gear shield Face of the milling wheel opposite this in Protrudes in the direction of the axis of rotation of the milling wheel.
  • the roller can basically have a smooth surface be formed, so to a desired compression the side wall of the sunk slot leads.
  • a preferred one Embodiment is that the roller with removal devices, such as cutting teeth, is provided.
  • the roller is also used as a removal tool Ground breaking trained. There can be a slot with it well-defined walls.
  • the removal tools are roller chisels.
  • the removal tools are frustoconical are.
  • the respective Axis of rotation of the cylindrical removal tool from an axially parallel position to the axis of rotation of the milling wheel be, so that continue through the removal tools with the cutter wheel rotating, a cutter wheel cutting surface is formed that runs parallel to the axis of rotation of the milling wheel.
  • Another embodiment according to the invention exists in that a total of four rollers are provided on a milling wheel are over the milling wheel at predetermined angular intervals are distributed. By the arrangement of several rollers reduces the load on the individual roller. Preferably the rolls are uniform Angular distance or alternately at an angle of 60 ° and 120 ° offset from each other.
  • a total of four milling wheels are provided, two of which are on one side of the shield are arranged.
  • FIG. 1 In the schematic view of Figure 1 is an inventive Trench wall cutter 10 with one of two shield walls 12, 13 constructed transmission shield 11 shown.
  • the Gear shield 11 is not in the usual way on one shown milling frame attached.
  • On both sides of the Gear shields 11 are each a milling wheel 20a and 20b arranged, which by a conventional drive device an essentially horizontally directed axis of rotation 21 are driven in rotation.
  • inner roller bits 22 and outer roller chisel 23 provided as removal tools.
  • the inner roller chisel 22 and the outer roller chisel 23 have truncated cone-shaped roller bodies on the outer surface Removal devices 28 are attached.
  • the inner roller chisels 22 and the outer roller chisel 23 by means of a star arranged brackets on the circumference of the milling wheels 20a, 20b rotatably held.
  • the axes 24 of the inner roller chisel 22 and the axes 25 of the outer roller chisel 23 are substantially axially parallel to the axis of rotation 21 of the Milling wheel 20a, 20b, depending on the taper angle frustoconical roller body of the inner roller chisel 22 or outer roller chisel 23 a certain angle is provided.
  • the angle adjustment is included chosen so that the roller chisel when the cutter wheel 20a, 20b is rotating 22, 23 a ground-contacting cutting wheel cutting surface form, which are essentially axially parallel to the axis of rotation 21 of the milling wheel 20a, 20b.
  • the touch surfaces the enveloping surfaces of the outer roller bits 23 and Envelope surface of the slot 41 are substantially parallel to each other and parallel to the axis of rotation 21 of the milling wheels 20a, 20b arranged.
  • roller axes 27 are essentially radial to the axis of rotation 21 of the milling wheel 20a, 20b and parallel to the shield walls 12, 13 of the gear shield 11 directed.
  • the rollers 26 are star-shaped on the corresponding Milling wheel hub arranged brackets attached so that a The lateral surface of the roller 26 continues in the horizontal direction protrudes from the gear shield 11 as the peripheral surface the outer roller chisel 23. So while the outer roller chisel 23 first a slot at a predetermined Milling width with a side wall 43, this is by the Rollers 26 provided with a widening 44. The broadening 44 depends on how far the rollers 26 face each other protrude the outer roller bits 23. In the shown Embodiment are the rollers 26 themselves with removal devices, such as milling teeth, which are only indicated schematically.
  • rollers 26 on each milling wheel 20a, 20b the lateral forces provided.
  • the total of four rollers 26 are alternately at an angular distance of 60 ° and 120 ° distributed over the circumference of the milling wheel 20a, 20b.
  • This arrangement is for both opposite milling wheels 20a, 20b the same, with the opposite cutting wheels 20a, 20b arranged on the axis of rotation 21 rotated relative to one another are so a particularly good support of the To ensure trench wall cutter 10 in the sunk slot 41.
  • only two cutter wheels 20a, 20b are shown are, the described embodiment of the invention a total of four milling wheels, the two opposite one another are arranged side by side.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Paleontology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Road Repair (AREA)
  • Earth Drilling (AREA)
  • Knives (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Dicing (AREA)
  • Shovels (AREA)

Abstract

The invention relates to a trench wall cutter with a cutting frame and a gear shield attached thereto. There is at least one cutting wheel positioned to turn on the opposite shield sides, and on it roller-shaped excavation tools distributed over the periphery are pivotally mounted. When the cutting wheel is rotating the tools form a cutting wheel cutting surface which runs essentially axially parallel to the axis of rotation of the cutting wheel. To accommodate horizontal forces, at least one additional roller is pivotally mounted on each cutting wheel, the axis of the additional roller being directed substantially radially with respect to the axis of rotation of the cutting wheel. One jacket surface of the roller on the radial face side of the cutting wheel away from the gear shield projects in the direction of the axis of rotation of the-cutting wheel.

Description

Die Erfindung betrifft eine Schlitzwandfräse gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a trench cutter according to the Preamble of claim 1.

Schlitzwandfräsen dienen zur Herstellung von Schlitzwänden für Baugrubensicherungen, Abdichtungen und Gründungen.Trench wall cutters are used to manufacture trench walls for building pit securing, sealing and foundations.

Aus der DE-A-39 33 168 ist eine Schlitzwandfräse mit einem Fräsrahmen und einem daran angebrachten Getriebeschild bekannt. An den gegenüberliegenden Schildseiten ist jeweils mindestens ein Fräsrad drehbar angeordnet, an welchem über den Umfang verteilt walzenförmige Abtragwerkzeuge drehbar gelagert sind. Diese bilden bei rotierendem Fräsrad eine Fräsradschneidfläche, die im wesentlichen achsparallel zur Drehachse des Fräsrades verläuft.From DE-A-39 33 168 is a trench cutter with a Milling frame and a gear plate attached to it known. Is on the opposite sides of the shield at least one milling wheel arranged rotatably, on which the circumference is distributed rotatable removal tools are stored. These form one when the cutter wheel is rotating Milling wheel cutting surface, which is essentially axially parallel to The axis of rotation of the milling wheel runs.

Mit einer derartigen Schlitzwandfräse ist auch bei hoher Gesteinsfestigkeit ein guter Bohrfortschritt und ein guter Freischnitt der Fräsräder erreichbar. Beim Fräsen in einem abgeteuften Schlitz treten große Kräfte auf, die zum sogenannten "Springen" der gesamten Schlitzwandfräse in dem Schlitz führen können. Hierbei werden die Fräsräder mit sehr hohen seitlichen Kräften beaufschlagt, die durch die seitlichen, walzenförmigen Abtragwerkzeuge auf die Fräsräder übertragen werden müssen. Bei diesem Vorgang entsteht erheblicher Verschleiß an den Radiallagern der walzenförmigen Abtragwerkzeuge. With such a trench cutter, even at high Rock strength a good drilling progress and a good one Free cutting of the cutting wheels accessible. When milling in one sunk slot, large forces occur, the so-called "Jumping" of the entire trench cutter in the Can lead slot. Here, the milling wheels with very high lateral forces caused by the lateral, roller-shaped removal tools on the milling wheels must be transferred. In this process arises considerable wear on the radial bearings of the roller-shaped Removal tools.

Der Erfindung liegt die Aufgabe zugrunde, eine Schlitzwandfräse mit walzenförmigen Abtragwerkzeugen bereitzustellen, deren Lager eine besonders hohe Lebensdauer erreichen.The invention has the object of providing a trench cutter with cylindrical Abtragwerkzeugen whose bearings have a particularly long service life.

Ausgehend von einer gattungsgemäßen Schlitzwandfräse wird die Aufgabe durch die kennzeichnenden Merkmale des Anspruchs 1 gelöst.Starting from a generic trench cutter the task through the characteristic features of the Claim 1 solved.

Bei der erfindungsgemäßen Schlitzwandfräse ist vorgesehen, daß zusätzlich an jedem Fräsrad mindestens eine Walze drehbar gelagert ist, deren Walzenachse im wesentlichen radial zur Drehachse des Fräsrades gerichtet ist, und daß eine Mantelfläche der Walze an einer von dem Getriebeschild abgewandten Stirnseite des Fräsrades gegenüber dieser in Richtung der Drehachse des Fräsrades vorsteht.In the trench cutter according to the invention, that additionally at least one roller can be rotated on each milling wheel is mounted, the roller axis is substantially radial is directed to the axis of rotation of the cutting wheel, and that a Shell surface of the roller on one facing away from the gear shield Face of the milling wheel opposite this in Protrudes in the direction of the axis of rotation of the milling wheel.

Durch die Anordnung dieser zusätzlichen Walzen erfolgt eine seitliche Führung und Abstützung der Schlitzwandfräse in dem abgeteuften Schlitz. Beim "Springen" der Schlitzwandfräse werden die auftretenden seitlichen Kräfte von diesen Walzen aufgenommen. Die walzenförmigen Abtragwerkzeuge werden folglich von den seitlichen Kräften entlastet, so daß kaum noch Axialkräfte auf die Radiallager der Abtragwerkzeuge einwirken. Durch die Reduktion der für Radiallager besonders belastenden Axialkräfte wird eine erhebliche Verringerung des Verschleißes dieser Lager erreicht. Dies hat eine Verminderung des Wartungsaufwandes und eine Erhöhung der Betriebsdauer der Schlitzwandfräse zur Folge.The arrangement of these additional rollers results in a lateral guidance and support of the trench cutter in the sunk slot. When "jumping" the trench cutter the lateral forces that arise from these Rolls added. The roller-shaped removal tools are therefore relieved of the lateral forces, so that there are hardly any axial forces on the radial bearings of the removal tools act. By reducing the for radial bearings particularly stressful axial forces becomes a considerable one Reduction in wear of these bearings achieved. This has a reduction in maintenance and one Increase the operating time of the trench cutter.

Die Walze kann grundsätzlich mit einer glatten Mantelfläche ausgebildet sein, die so zu einer erwünschten Verdichtung der Seitenwand des abgeteuften Schlitzes führt. Eine bevorzugte Ausführungsform besteht jedoch darin, daß die Walze mit Abtrageinrichtungen, wie Schneidzähnen, versehen ist. Die Walze ist dabei ebenfalls als ein Abtragwerkzeug zum Brechen des Bodens ausgebildet. Es kann so ein Schlitz mit genau definierten Wänden abgeteuft werden.The roller can basically have a smooth surface be formed, so to a desired compression the side wall of the sunk slot leads. A preferred one Embodiment, however, is that the roller with removal devices, such as cutting teeth, is provided. The roller is also used as a removal tool Ground breaking trained. There can be a slot with it well-defined walls.

Ein besonders guter Bohrfortschritt wird dadurch erreicht, daß die Abtragwerkzeuge Rollenmeißel sind.Particularly good drilling progress is achieved that the removal tools are roller chisels.

Gemäß einer weiteren Ausführungsform der Erfindung ist es vorteilhaft, daß die Abtragwerkzeuge kegelstumpfförmig ausgebildet sind. Entsprechend dem Kegelwinkel kann die jeweilige Drehachse des walzenförmigen Abtragwerkzeuges von einer achsparallelen Lage zur Drehachse des Fräsrades angewinkelt werden, so daß durch die Abtragwerkzeuge weiterhin bei rotierendem Fräsrad eine Fräsradschneidfläche gebildet wird, die achsparallel zur Drehachse des Fräsrades verläuft. Bei angewinkelter Drehachse der walzenförmigen Abtragwerkzeuge können deren Radiallager in gewissem Umfang seitlichen Kräften besser standhalten. Seitlich reicht die Walze mindestens so weit weg vom Getriebeschild wie die seitlich äußeren Abtragwerkzeuge.According to a further embodiment of the invention it is advantageous that the removal tools are frustoconical are. Depending on the cone angle, the respective Axis of rotation of the cylindrical removal tool from an axially parallel position to the axis of rotation of the milling wheel be, so that continue through the removal tools with the cutter wheel rotating, a cutter wheel cutting surface is formed that runs parallel to the axis of rotation of the milling wheel. With angled axis of rotation of the roller-shaped removal tools can their radial bearings to some extent better withstand lateral forces. That is enough on the side Roll at least as far from the gear shield as that lateral removal tools.

Eine weitere erfindungsgemäße Ausführungsform besteht darin, daß insgesamt vier Walzen an einem Fräsrad vorgesehen sind, die über das Fräsrad in vorgegebenen Winkelabständen verteilt angeordnet sind. Durch die Anordnung mehrerer Walzen wird die Belastung der einzelnen Walze reduziert. Vorzugsweise sind die Walzen in einem gleichmäßigen Winkelabstand oder wechselweise in einem Winkel von 60° und 120° zueinander versetzt.Another embodiment according to the invention exists in that a total of four rollers are provided on a milling wheel are over the milling wheel at predetermined angular intervals are distributed. By the arrangement of several rollers reduces the load on the individual roller. Preferably the rolls are uniform Angular distance or alternately at an angle of 60 ° and 120 ° offset from each other.

Für eine besonders gute Kraftverteilung bei guter Bohrleistung ist es vorteilhaft, daß insgesamt vier Fräsräder vorgesehen sind, von denen jeweils zwei auf einer Schildseite angeordnet sind. For particularly good power distribution with good drilling performance it is advantageous that a total of four milling wheels are provided, two of which are on one side of the shield are arranged.

Die Erfindung wird weiter anhand eines Ausführungsbeispieles erläutert, welches in der Zeichnung dargestellt ist. In dieser zeigen:

Fig. 1
eine ausschnittweise Seitenansicht einer erfindungsgemäßen Schlitzwandfräse in einem abgeteuften Schlitz; und
Fig. 2
eine Vorderansicht des in Figur 1 gezeigten Teils einer erfindungsgemäßen Schlitzwandfräse.
The invention is further explained using an exemplary embodiment which is illustrated in the drawing. In this show:
Fig. 1
a partial side view of a trench cutter according to the invention in a sunk slot; and
Fig. 2
a front view of the part shown in Figure 1 of a trench cutter according to the invention.

In der schematischen Ansicht von Figur 1 ist eine erfindungsgemäße Schlitzwandfräse 10 mit einem aus zwei Schildwänden 12, 13 aufgebauten Getriebeschild 11 gezeigt. Das Getriebeschild 11 ist in üblicher Weise an einem nicht dargestellten Fräsrahmen befestigt. Zu beiden Seiten des Getriebeschildes 11 sind je ein Fräsrad 20a und 20b angeordnet, welche durch eine übliche Antriebseinrichtung um eine im wesentlichen horizontal gerichtete Drehachse 21 rotierend angetrieben sind.In the schematic view of Figure 1 is an inventive Trench wall cutter 10 with one of two shield walls 12, 13 constructed transmission shield 11 shown. The Gear shield 11 is not in the usual way on one shown milling frame attached. On both sides of the Gear shields 11 are each a milling wheel 20a and 20b arranged, which by a conventional drive device an essentially horizontally directed axis of rotation 21 are driven in rotation.

Zum Abtragen eines Bodens 40 beim Abteufen eines Schlitzes 41 sind an jedem Fräsrad 20a, 20b innere Rollenmeißel 22 und äußere Rollenmeißel 23 als Abtragwerkzeuge vorgesehen. Die inneren Rollenmeißel 22 und die äußeren Rollenmeißel 23 weisen kegelstumpfförmige Rollenkörper auf, an deren Mantelfläche Abtrageinrichtungen 28 angebracht sind.For removing a floor 40 when sinking a slot 41 are on each cutter wheel 20a, 20b inner roller bits 22 and outer roller chisel 23 provided as removal tools. The inner roller chisel 22 and the outer roller chisel 23 have truncated cone-shaped roller bodies on the outer surface Removal devices 28 are attached.

Wie aus Figur 2 ersichtlich ist, sind die inneren Rollenmeißel 22 und die äußeren Rollenmeißel 23 mittels sternförmig angeordneten Halterungen am Umfang der Fräsräder 20a, 20b drehbar gehalten. Die Achsen 24 der inneren Rollenmeißel 22 und die Achsen 25 der äußeren Rollenmeißel 23 sind im wesentlichen achsparallel zur Drehachse 21 des Fräsrades 20a, 20b, wobei abhängig vom Kegelwinkel der kegelstumpfförmigen Rollenkörper der inneren Rollenmeissel 22 bzw. äußeren Rollenmeißel 23 eine gewisse Winkelanstellung vorgesehen ist. Die Winkelanstellung ist dabei so gewählt, daß bei rotierendem Fräsrad 20a, 20b die Rollenmeißel 22, 23 eine bodenkontaktierende Fräsradschneidfläche bilden, die im wesentlichen achsparallel zur Drehachse 21 des Fräsrades 20a, 20b verläuft. Die Berührungsflächen der Hüllflächen der äußeren Rollenmeißel 23 und der Hüllfläche des Schlitzes 41 sind im wesentlichen parallel zueinander und parallel zur Drehachse 21 der Fräsräder 20a, 20b angeordnet.As can be seen from Figure 2, the inner roller chisels 22 and the outer roller chisel 23 by means of a star arranged brackets on the circumference of the milling wheels 20a, 20b rotatably held. The axes 24 of the inner roller chisel 22 and the axes 25 of the outer roller chisel 23 are substantially axially parallel to the axis of rotation 21 of the Milling wheel 20a, 20b, depending on the taper angle frustoconical roller body of the inner roller chisel 22 or outer roller chisel 23 a certain angle is provided. The angle adjustment is included chosen so that the roller chisel when the cutter wheel 20a, 20b is rotating 22, 23 a ground-contacting cutting wheel cutting surface form, which are essentially axially parallel to the axis of rotation 21 of the milling wheel 20a, 20b. The touch surfaces the enveloping surfaces of the outer roller bits 23 and Envelope surface of the slot 41 are substantially parallel to each other and parallel to the axis of rotation 21 of the milling wheels 20a, 20b arranged.

Um eine Belastung der Radiallager der Rollenmeißel 22, 23 durch horizontal gerichtete Kräfte, welche beim sognenannten "Springen" der Schlitzwandfräse in dem abgeteuften Schlitz 41 auftreten können, weitgehend zu vermeiden, sind an jedem Fräsrad 20a, 20b an deren äußeren Stirnseiten 29 Walzen 26 gelagert. Deren Walzenachsen 27 sind im wesentlichen radial zur Drehachse 21 des Fräsrades 20a, 20b und parallel zu den Schildwänden 12, 13 des Getriebeschildes 11 gerichtet.In order to load the radial bearings of the roller chisels 22, 23 by horizontally directed forces, which in the so-called "Jumping" of the trench cutter in the sunk Slit 41 can occur, are to be largely avoided on each milling wheel 20a, 20b on the outer end faces 29 thereof Rollers 26 stored. Their roller axes 27 are essentially radial to the axis of rotation 21 of the milling wheel 20a, 20b and parallel to the shield walls 12, 13 of the gear shield 11 directed.

Die Walzen 26 sind über entsprechende sternförmig an der Fräsradnabe angeordnete Halterungen so angebracht, daß eine Mantelfläche der Walze 26 in horizontaler Richtung weiter vom Getriebeschild 11 weg vorsteht als die Umfangsfläche der äußeren Rollenmeißel 23. Während also die äußeren Rollenmeißel 23 zunächst einen Schlitz bei einer vorgegebenen Breite mit einer Seitenwand 43 fräsen, wird diese durch die Walzen 26 mit einer Verbreiterung 44 versehen. Die Verbreiterung 44 ist davon abhängig, wie weit die Walzen 26 gegenüber den äußeren Rollenmeißeln 23 vorstehen. Bei der gezeigten Ausführungsform sind die Walzen 26 selbst mit Abtrageinrichtungen, wie beispielsweise Fräszähnen, versehen, die lediglich schematisch angedeutet sind. The rollers 26 are star-shaped on the corresponding Milling wheel hub arranged brackets attached so that a The lateral surface of the roller 26 continues in the horizontal direction protrudes from the gear shield 11 as the peripheral surface the outer roller chisel 23. So while the outer roller chisel 23 first a slot at a predetermined Milling width with a side wall 43, this is by the Rollers 26 provided with a widening 44. The broadening 44 depends on how far the rollers 26 face each other protrude the outer roller bits 23. In the shown Embodiment are the rollers 26 themselves with removal devices, such as milling teeth, which are only indicated schematically.

An jedem Fräsrad 20a, 20b sind vier Walzen 26 zur Aufnahme der seitlichen Kräfte vorgesehen. Die insgesamt vier Walzen 26 sind abwechselnd in einem Winkelabstand von 60° und 120° über den Umfang des Fräsrades 20a, 20b verteilt. Diese Anordnung ist bei beiden gegenüberliegenden Fräsrädern 20a, 20b gleich, wobei die gegenüberliegenden Fräsräder 20a, 20b auf der Drehachse 21 zueinander verdreht angeordnet sind, um so eine besonders gute Abstützung der Schlitzwandfräse 10 in dem abgeteuften Schlitz 41 zu gewährleisten. Obwohl nur zwei Fräsräder 20a, 20b dargestellt sind, weist die beschriebene erfindungsgemäße Ausführungsform insgesamt vier Fräsräder auf, die paarweise gegenüberliegend nebeneinander angeordnet sind.There are four rollers 26 on each milling wheel 20a, 20b the lateral forces provided. The total of four rollers 26 are alternately at an angular distance of 60 ° and 120 ° distributed over the circumference of the milling wheel 20a, 20b. This arrangement is for both opposite milling wheels 20a, 20b the same, with the opposite cutting wheels 20a, 20b arranged on the axis of rotation 21 rotated relative to one another are so a particularly good support of the To ensure trench wall cutter 10 in the sunk slot 41. Although only two cutter wheels 20a, 20b are shown are, the described embodiment of the invention a total of four milling wheels, the two opposite one another are arranged side by side.

Durch die Anordnung der zusätzlichen Walzen 26, deren Berührungsflächen der Hüllflächen mit der Hüllfläche des Schlitzes 41 im wesentlichen parallel zur Seitenwand 43 des Schlitzes 41 verlaufen, wird eine vorteilhafte Kraftaufteilung an den Fräsrädern 20a, 20b erreicht. So werden die horizontalen Kräfte durch die Walzen 26 aufgenommen, während die vertikalen Kräfte vorallem durch die äußeren Rollenmeißel 23 aufgefangen werden.By arranging the additional rollers 26, the Contact surfaces of the enveloping surfaces with the enveloping surface of the Slot 41 substantially parallel to the side wall 43 of the Slit 41 run, an advantageous distribution of forces reached on the cutting wheels 20a, 20b. So the horizontal ones Forces absorbed by the rollers 26 while the vertical forces mainly through the outer roller chisels 23 can be caught.

Claims (6)

  1. A trench wall cutter comprising:
    a cutting frame and
    a gear shield (11) attached thereto;
    at least one cutting wheel (20a, 20b) rotatably positioned on opposing sides (12, 13) of the gear shield,
    about a periphery of the cutting wheel pivotally mounted roller-shaped excavation tools (22, 23) are distributed,
    which form a cutting wheel cutting surface when the cutting wheel (20a, 20B) rotates which extends substantially axially parallel to an axis of rotation (21) of the cutting wheel (20a, 20b),
    characterized in that
    at least one additional roller (26) is pivotally mounted on each of the cutting wheels (20a, 20b) an axis (27) of the roller extending substantially radially with respect to an axis of rotation (21) of the cutting wheel (20a, 20b); and
    a jacket surface of the roller (26) on one face side (29) of the cutting wheel (20a, 20b) away from the gear shield (11) projects outwardly relative to the face in the direction of the axis of rotation (21) of the cutting wheel (20a, 20b) .
  2. A trench wall cutter according to claim 1,
    characterized in that
    the roller (26) is provided with excavation means.
  3. A trench wall cutter according to claim 1 or 2,
    characterized in that
    the excavation tools (22, 23) are roller bits.
  4. A trench wall cutter according to one of the claims 1 to 3,
    characterized in that,
    the excavation tools (22, 23) are in the form of truncated cones.
  5. A trench wall cutter according to one of the claims 1 to 4,
    characterized in that,
    there are a total of four rollers (26) on a cutting wheel (20a, 20b), which are distributed at predetermined angular distances about the periphery of the cutting wheel (20a, 20b).
  6. A trench wall cutter according to one of the claims 1 to 5,
    characterized in that,
    there are a total of four rollers (20a, 20b), with two additional rollers being located on one shield side (12, 13).
EP97119286A 1996-12-18 1997-11-04 Cutting wheel apparatus for excavating trenches Expired - Lifetime EP0849403B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19652835 1996-12-18
DE19652835A DE19652835C1 (en) 1996-12-18 1996-12-18 Subterranean cutter dredger

Publications (2)

Publication Number Publication Date
EP0849403A1 EP0849403A1 (en) 1998-06-24
EP0849403B1 true EP0849403B1 (en) 2000-09-13

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Application Number Title Priority Date Filing Date
EP97119286A Expired - Lifetime EP0849403B1 (en) 1996-12-18 1997-11-04 Cutting wheel apparatus for excavating trenches

Country Status (13)

Country Link
US (1) US5924222A (en)
EP (1) EP0849403B1 (en)
JP (1) JP2971425B2 (en)
KR (2) KR19980064285A (en)
CN (1) CN1070972C (en)
AT (1) ATE196336T1 (en)
DE (2) DE19652835C1 (en)
HK (1) HK1010899A1 (en)
ID (1) ID19690A (en)
MY (1) MY120217A (en)
SG (1) SG77616A1 (en)
TW (1) TW384334B (en)
ZA (1) ZA9710949B (en)

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DE10308538C5 (en) * 2003-02-27 2014-11-06 Bauer Maschinen Gmbh Method of making a trench wall in the ground, trench wall cutter and trench wall cutter
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Also Published As

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CN1185508A (en) 1998-06-24
HK1010899A1 (en) 1999-07-02
JPH10183681A (en) 1998-07-14
ID19690A (en) 1998-07-30
ZA9710949B (en) 1998-06-15
KR100248603B1 (en) 2000-03-15
CN1070972C (en) 2001-09-12
EP0849403A1 (en) 1998-06-24
DE59702343D1 (en) 2000-10-19
US5924222A (en) 1999-07-20
SG77616A1 (en) 2001-01-16
DE19652835C1 (en) 1998-03-26
MY120217A (en) 2005-09-30
TW384334B (en) 2000-03-11
ATE196336T1 (en) 2000-09-15
JP2971425B2 (en) 1999-11-08
KR19980064285A (en) 1998-10-07

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