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EP1548192A1 - Tiltable tooth. - Google Patents

Tiltable tooth. Download PDF

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Publication number
EP1548192A1
EP1548192A1 EP20040028688 EP04028688A EP1548192A1 EP 1548192 A1 EP1548192 A1 EP 1548192A1 EP 20040028688 EP20040028688 EP 20040028688 EP 04028688 A EP04028688 A EP 04028688A EP 1548192 A1 EP1548192 A1 EP 1548192A1
Authority
EP
European Patent Office
Prior art keywords
tooth
folding
pivot bearing
folding tooth
control arm
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP20040028688
Other languages
German (de)
French (fr)
Other versions
EP1548192B1 (en
Inventor
Maximilian Arzberger
Ignaz Seitle
Ludwig Andreas Huber
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bauer Maschinen GmbH
Original Assignee
Bauer Maschinen GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bauer Maschinen GmbH filed Critical Bauer Maschinen GmbH
Priority to PL04028688T priority Critical patent/PL1548192T3/en
Publication of EP1548192A1 publication Critical patent/EP1548192A1/en
Application granted granted Critical
Publication of EP1548192B1 publication Critical patent/EP1548192B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F5/00—Dredgers or soil-shifting machines for special purposes
    • 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
    • E02F5/00—Dredgers or soil-shifting machines for special purposes
    • E02F5/02—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches
    • E02F5/08—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches with digging wheels turning round an axis
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/28—Small metalwork for digging elements, e.g. teeth scraper bits
    • E02F9/2866—Small metalwork for digging elements, e.g. teeth scraper bits for rotating digging elements
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/909—Cutter assemblage or cutter element therefor [e.g., chain saw chain]

Definitions

  • the invention relates to a folding tooth for a cutting wheel with a Swivel bearing, for pivotal holding on a pivot pin on a cutter hub, away from the pivot bearing extending milling tooth holder and one from the pivot bearing essentially opposite to the direction of the Fräsierehalters away extending control arm.
  • folding teeth are known from EP 0 291 027 B1, which also goes back to the applicant.
  • EP 0 291 027 B1 proposed, the adjacent to the bearing plate cutting teeth to store hinged on the cutting wheels.
  • the folding teeth can be in an area below of the milling blade are unfolded to underlying ground area while at a further rotation of the Milling wheel, the folding teeth are folded back, so that The bearing plate is not damaged by the cutting teeth.
  • the folding teeth are by their necessary Tilting exposed to quite considerable forces and loads, especially if harder ground or rocky ground must be edited.
  • the known folding teeth are thus exposed to a very strong wear and can also suffer early damage, which one soon Make replacement necessary.
  • An exchange of the folding teeth leads not only to relatively long and therefore costly downtime the investment-intensive trench cutter, but the folding teeth are because of their necessary pivotal mounting and the required wear resistance relatively expensive.
  • the invention has for its object to provide a folding tooth, which has a simplified manufacturability improved durability.
  • a folding tooth according to the invention is characterized that the pivot bearing, the Fräs leopardhalter and the control arm are formed as a one-piece carrier.
  • the folding tooth can be made by casting or forging, wherein however, a preferred production by flame cutting is given from a sheet metal. Compared to the design as a welded construction results in the one-piece design of the pivot bearing and the individual arms of the folding tooth one improved strength while reducing the Production costs.
  • a preferred embodiment of the invention is in that a receptacle is formed on the milling tooth holder, in which hardened cutting teeth are releasably secured.
  • the integral supports can be the ground breaking cutting teeth made of a specially hardened material.
  • to Connection with the carrier can be conventional non-positive and positive Connecting means and joining methods are used.
  • the Milling belt holder between the pivot bearing and the receptacle for the cutting teeth is formed a taper.
  • Such Rejuvenation allows improved elasticity of the above Milling tooth holder, allowing bending loads in the tapered Job can be recorded and thereby the Swing bearing is relieved.
  • this rejuvenation can also an even better pivoting of the folding tooth on the milling blade allow.
  • the pivot bearing as a single bearing eye be formed by flame cutting or drilling in the carrier has been introduced.
  • the pivot bearing at least two spaced apart Has bearing walls, each with one another Coaxially arranged bearing eye are provided.
  • the warehouse walls can be made by inserting a groove in the one piece Carriers are produced.
  • the bearing eyes can also be made by flame cutting or drilling.
  • a stop element is arranged in the region of the control arm. This serves to make contact with the control arm with the Fräsradnabe on which the folding tooth is mounted. By this stop, the maximum Ausklappwinkel to the end shield limited.
  • the stop element may consist of a highly wear-resistant material, as the folding teeth through the pending soil in operation a considerable pressure on exercise the stopper.
  • a wear plate releasably and replaceably supported.
  • the wear plate serves as a cam follower for contacting of the folding tooth with the control bar on the milling blade, through which Time and extent of the deflection of the folding tooth dependent be predetermined by the rotational position of the cutting wheel.
  • This wear plate functionally exposed to a significant sliding friction.
  • the wear plate therefore preferably has lubricating Metal alloys on which about bronze or brass can contain.
  • the wear plate can be made separately become, whereby the manufacturing costs of the folding tooth reduce overall. With appropriate wear can the wear plate exchanged quickly and inexpensively while the wearer of the folding tooth continues to work on the cutting wheel remains attached.
  • the Wear plate is bolted to the control arm.
  • a Screw is particularly inexpensive to produce and can be easily detached and fastened again.
  • a groove guide between control arm and wear plate is provided.
  • a guide such as a dovetail guide allows a fast and exact arrangement the wear plate on the folding tooth. This allows maintenance times and maintenance costs are further reduced.
  • a Material savings on the wear plate is according to the invention achieved in that the wear plate formed kidney-shaped is.
  • the wear plate on their Side regions is formed chamfered.
  • This bevel which may be straight or curved, allowed a gentle interaction with the control bar, so that the Folded tooth can be folded in and out largely without jerking can. This also has a positive effect on the lifetime of the person Folding tooth off.
  • the folding tooth according to the invention can basically be used on a wide variety of different types Milling wheels are used.
  • a preferred application however, is the use of a trench cutter, as in special foundation engineering for the creation of supporting and sealing walls is used.
  • FIG. 1 the arrangement and the function of an inventive Folding tooth 10 on a bearing plate 5 a Trench wall cutter shown.
  • a bearing plate 5 At the end plate 5 are to two sides each rotatably mounted two cutting wheels, which made For reasons of clarity are not shown.
  • pivot pin 18th At the end of the bearing plate 5 facing side of the cutting wheels are pivot pin 18th arranged on which a folding tooth 10 in a known manner is pivotally mounted.
  • the pivoting movement of the folding tooth 10 is replaced by a fixed to the bearing plate 5 control bar. 7 along which the folding tooth 10 slides along.
  • the operating position is shown in which the Folding tooth 10 is unfolded, leaving the bottom material underneath of the bearing plate 5 can be processed.
  • the structure and the function of the folding tooth 10 are associated with Figs. 2 to 4 explained in more detail.
  • the folding tooth 10 has an integral base body 11, in which a pivot bearing 12 for receiving the at the Fräsradnabe attached pivot pin is provided.
  • a pivot bearing 12 for receiving the at the Fräsradnabe attached pivot pin is provided.
  • the pivot bearing 12 are, as can be seen from Fig. 4, two formed by a groove 15 separate bearing walls 14, in which each bearing eye 16 is drilled out.
  • the two bearing eyes 16 are aligned coaxially with each other, so that the Pivot bolt 18, optionally introduced with a sliding sleeve and so the folding tooth 10 can be pivotally mounted.
  • a so-called Fräs leopardhalter 20 is formed, in which two receptacles 22 introduced for the cutting teeth are.
  • a taper 26th formed so that a total hourglass-like shape on Basic body 11 is given.
  • control arm 30 From the storage area 12 away extends approximately opposite for milling tooth holder 20 a so-called control arm 30, which also integrally formed on the base body 11. At the free end of the control arm 30 is an approximately kidney-shaped wear plate 34 detachable and replaceable by means of screw 36 attached. The wear plate 34 will be below described in more detail in connection with FIG. 5.
  • FIG. 5 shows the kidney-shaped Front surface 38 of the wear plate 34, being laterally on connect a chamfer 40 bevels 42.
  • the bevels 42 serve for a smooth, smooth gliding the Wear plate 34 along the control bar 7 on the bearing plate 5th
  • a guide groove 44 indicated On the side facing away from the front panel 38 back is schematic a guide groove 44 indicated, which for easy and accurately posting the wear plate 34 to the folding tooth 10 serves. Furthermore, at the back are in an upper area two schematically indicated threaded bores 46 are provided, which for screw mounting the wear plate 34 on Base body 11 serve. In the area of the threaded bore 46 are for wear protection and to ensure a sufficient Strength material heaps 48 provided.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Pivots And Pivotal Connections (AREA)
  • Hinges (AREA)
  • Gears, Cams (AREA)
  • Vehicle Step Arrangements And Article Storage (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Rear-View Mirror Devices That Are Mounted On The Exterior Of The Vehicle (AREA)
  • Steering-Linkage Mechanisms And Four-Wheel Steering (AREA)
  • Milling Processes (AREA)
  • Component Parts Of Construction Machinery (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)

Abstract

The tooth (10) includes a pivot bearing (12) which pivotally supports a pivot pin on a cutting wheel hub. A cutting tooth support (20) and a steering arm (30) extend from the pivot bearing, to opposite directions. The pivot bearing, the cutting tooth support, and the steering arm are designed as a one-piece support. Independent claims are also included for the following: (A) a cutting wheel; and (B) a trench cutter.

Description

Die Erfindung betrifft einen Klappzahn für ein Fräsrad mit einem Schwenklager, zum schwenkbaren Halten an einem Schwenkbolzen an einer Fräsradnabe, einem sich vom Schwenklager weg erstreckenden Fräszahnhalter und einem sich vom Schwenklager im Wesentlichen entgegengesetzt zur Richtung des Fräszahnhalters weg erstreckenden Steuerarm.The invention relates to a folding tooth for a cutting wheel with a Swivel bearing, for pivotal holding on a pivot pin on a cutter hub, away from the pivot bearing extending milling tooth holder and one from the pivot bearing essentially opposite to the direction of the Fräszahnhalters away extending control arm.

Derartige Klappzähne sind aus der EP 0 291 027 B1 bekannt, welche ebenfalls auf die Anmelderin zurückgeht. Bei Schlitzwandfräsen mit seitlich an einem Lagerschild angeordneten Fräsrädern besteht das Problem, dass Bodenbereich unmittelbar unterhalb des Lagerschildes nicht unmittelbar von den Fräsrädern abgearbeitet werden kann. Daher wird in der EP 0 291 027 B1 vorgeschlagen, die an das Lagerschild angrenzenden Fräszähne an den Fräsrädern klappbar zu lagern. Durch eine Art Nockensteuerung können die Klappzähne in einen Bereich unterhalb des Frässchildes ausgeklappt werden, um darunterliegenden Bodenbereich abzuarbeiten, während bei einer Weiterdrehung des Fräsrades die Klappzähne wieder eingeklappt werden, so dass das Lagerschild nicht von den Fräszähnen beschädigt wird.Such folding teeth are known from EP 0 291 027 B1, Which also goes back to the applicant. For trench wall milling arranged laterally on a bearing plate Milling wheels is the problem that ground area immediately below the end shield not directly from the cutting wheels can be processed. Therefore, in EP 0 291 027 B1 proposed, the adjacent to the bearing plate cutting teeth to store hinged on the cutting wheels. By a kind of cam control The folding teeth can be in an area below of the milling blade are unfolded to underlying ground area while at a further rotation of the Milling wheel, the folding teeth are folded back, so that The bearing plate is not damaged by the cutting teeth.

Funktionsbedingt sind die Klappzähne durch ihre notwendige Schrägstellung ganz erheblichen Kräften und Belastungen ausgesetzt, insbesondere wenn härterer Boden oder felsiger Untergrund bearbeitet werden müssen. Die bekannten Klappzähne sind somit einem sehr starken Verschleiß ausgesetzt und können zudem frühzeitige Beschädigungen erleiden, welche einen baldigen Austausch notwendig machen. Ein Austausch der Klappzähne führt nicht nur zu relativ langen und damit kostenaufwändigen Ausfallzeiten der investitionsintensiven Schlitzwandfräse, sondern die Klappzähne sind wegen ihrer notwendigen Schwenklagerung und der geforderten Verschleißbeständigkeit relativ teuer.Functionally, the folding teeth are by their necessary Tilting exposed to quite considerable forces and loads, especially if harder ground or rocky ground must be edited. The known folding teeth are thus exposed to a very strong wear and can also suffer early damage, which one soon Make replacement necessary. An exchange of the folding teeth leads not only to relatively long and therefore costly downtime the investment-intensive trench cutter, but the folding teeth are because of their necessary pivotal mounting and the required wear resistance relatively expensive.

Der Erfindung liegt die Aufgabe zugrunde, einen Klappzahn anzugeben, welcher bei einer vereinfachten Herstellbarkeit eine verbesserte Haltbarkeit besitzt.The invention has for its object to provide a folding tooth, which has a simplified manufacturability improved durability.

Die Aufgabe wird erfindungsgemäß durch die unabhängigen Ansprüche gelöst, wobei bevorzugte Ausführungsformen in den abhängigen Ansprüchen angegeben sind.The object is achieved by the independent claims solved, wherein preferred embodiments in the dependent Claims are given.

Ein erfindungsgemäßer Klappzahn ist dadurch gekennzeichnet, dass das Schwenklager, der Fräszahnhalter und der Steuerarm als einstückiger Träger ausgebildet sind. Der Klappzahn kann dabei durch Gießen oder Schmieden hergestellt werden, wobei jedoch eine bevorzugte Herstellung durch ein Brennschneiden aus einem Blech gegeben ist. Gegenüber der Ausgestaltung als eine Schweißkonstruktion ergibt die einstückige Ausgestaltung des Schwenklagers und der einzelnen Arme des Klappzahnes eine verbesserte Festigkeit bei gleichzeitiger Verminderung der Herstellungskosten.A folding tooth according to the invention is characterized that the pivot bearing, the Fräszahnhalter and the control arm are formed as a one-piece carrier. The folding tooth can be made by casting or forging, wherein however, a preferred production by flame cutting is given from a sheet metal. Compared to the design as a welded construction results in the one-piece design of the pivot bearing and the individual arms of the folding tooth one improved strength while reducing the Production costs.

Eine bevorzugte Ausführungsform der_Erfindung besteht darin, dass an dem Fräszahnhalter eine Aufnahme ausgebildet ist, in welcher gehärtete Fräszähne lösbar befestigt sind. In den einstückigen Träger können die den Boden brechenden Fräszähne aus einem speziell gehärteten Material eingesetzt werden. Zur Verbindung mit dem Träger können herkömmliche kraft- und formschlüssige Verbindungsmittel und Fügeverfahren verwendet werden.A preferred embodiment of the invention is in that a receptacle is formed on the milling tooth holder, in which hardened cutting teeth are releasably secured. In the integral supports can be the ground breaking cutting teeth made of a specially hardened material. to Connection with the carrier can be conventional non-positive and positive Connecting means and joining methods are used.

Gemäß der Erfindung ist es weiterhin vorteilhaft, dass am Fräsbandhalter zwischen dem Schwenklager und der Aufnahme für die Fräszähne eine Verjüngung ausgebildet ist. Eine solche Verjüngung erlaubt eine verbesserte Elastizität des vorstehenden Fräszahnhalters, so dass Biegebelastungen in der verjüngten Stelle aufgenommen werden können und hierdurch das Schwenklager entlastet wird. Zudem kann diese Verjüngung auch ein noch besseres Heranschwenken des Klappzahnes an das Frässchild erlauben.According to the invention, it is furthermore advantageous that the Milling belt holder between the pivot bearing and the receptacle for the cutting teeth is formed a taper. Such Rejuvenation allows improved elasticity of the above Milling tooth holder, allowing bending loads in the tapered Job can be recorded and thereby the Swing bearing is relieved. In addition, this rejuvenation can also an even better pivoting of the folding tooth on the milling blade allow.

Grundsätzlich kann das Schwenklager als ein einziges Lagerauge ausgebildet sein, welches durch Brennschneiden oder Bohren in den Träger eingebracht worden ist. Zur verbesserten Elastizität des Schwenklagers ist es jedoch erfindungsgemäß vorgesehen, dass das Schwenklager mindestens zwei zueinander beabstandete Lagerwände aufweist, welche jeweils mit einem zueinander koaxial angeordneten Lagerauge versehen sind. Die Lagerwände können durch Einbringen einer Nut in den einstückigen Träger hergestellt werden. Die Lageraugen können ebenfalls durch Brennschneiden oder Bohren gefertigt werden.Basically, the pivot bearing as a single bearing eye be formed by flame cutting or drilling in the carrier has been introduced. For improved elasticity the pivot bearing, it is provided according to the invention, that the pivot bearing at least two spaced apart Has bearing walls, each with one another Coaxially arranged bearing eye are provided. The warehouse walls can be made by inserting a groove in the one piece Carriers are produced. The bearing eyes can also be made by flame cutting or drilling.

Eine weitere bevorzugte Ausführungsform der Erfindung besteht darin, dass im Bereich des Steuerarms ein Anschlagelement angeordnet ist. Dieses dient zur Kontaktierung des Steuerarms mit der Fräsradnabe, an welchem der Klappzahn gelagert ist. Durch diesen Anschlag wird der maximale Ausklappwinkel zum Lagerschild hin begrenzt. Das Anschlagelement kann aus einem hoch verschleißfesten Material sein, da die Klappzähne durch den anstehenden Boden im Betrieb einen erheblichen Druck auf das Anschlagelement ausüben.Another preferred embodiment of the invention is in that arranged in the region of the control arm, a stop element is. This serves to make contact with the control arm with the Fräsradnabe on which the folding tooth is mounted. By this stop, the maximum Ausklappwinkel to the end shield limited. The stop element may consist of a highly wear-resistant material, as the folding teeth through the pending soil in operation a considerable pressure on exercise the stopper.

-Eine weitere Lösung der eingangs genannten Aufgabe besteht nach der Erfindung darin, dass an dem Steuerarm eine Verschleißplatte lösbar und auswechselbar gehaltert ist. Die Verschleißplatte dient als Nockenfolgeelement zur Kontaktierung des Klappzahnes mit der Steuerleiste am Frässchild, durch welche Zeitpunkt und Umfang der Auslenkung des Klappzahnes abhängig von der Drehstellung des Fräsrades vorgegeben werden. Anders als das vorgenannte Anschlagelement ist diese Verschleißplatte funktionsbedingt einer erheblichen Gleitreibung ausgesetzt. Die Verschleißplatte weist daher vorzugsweise schmierende Metalllegierungen auf, welche etwa Bronze oder Messing enthalten können. Die Verschleißplatte kann separat hergestellt werden, wodurch sich die Herstellungskosten des Klappzahnes insgesamt reduzieren. Bei entsprechender Abnutzung kann die Verschleißplatte schnell und kostengünstig ausgetauscht werden, während der Träger des Klappzahnes weiterhin am Fräsrad befestigt bleibt.-A further solution to the problem mentioned is according to the invention in that on the control arm a wear plate releasably and replaceably supported. The wear plate serves as a cam follower for contacting of the folding tooth with the control bar on the milling blade, through which Time and extent of the deflection of the folding tooth dependent be predetermined by the rotational position of the cutting wheel. Different as the aforementioned stopper is this wear plate functionally exposed to a significant sliding friction. The wear plate therefore preferably has lubricating Metal alloys on which about bronze or brass can contain. The wear plate can be made separately become, whereby the manufacturing costs of the folding tooth reduce overall. With appropriate wear can the wear plate exchanged quickly and inexpensively while the wearer of the folding tooth continues to work on the cutting wheel remains attached.

Gemäß der Erfindung ist es aber besonders bevorzugt, dass die Verschleißplatte mit dem Steuerarm verschraubt ist. Eine Schraubverbindung ist besonders kostengünstig herstellbar und lässt sich leicht lösen und wieder befestigen.According to the invention, however, it is particularly preferred that the Wear plate is bolted to the control arm. A Screw is particularly inexpensive to produce and can be easily detached and fastened again.

In einer weiteren Ausgestaltung der Erfindung ist es vorteilhaft, dass eine Nutführung zwischen Steuerarm und Verschleißplatte vorgesehen ist. Eine solche Führung, etwa eine Schwalbenschwanzführung erlaubt ein schnelles und exaktes Anordnen der Verschleißplatte auf dem Klappzahn. Hierdurch können Wartungszeiten und Wartungskosten weiter vermindert werden. Eine Materialersparnis an der Verschleißplatte wird erfindungsgemäß dadurch erreicht, dass die Verschleißplatte nierenförmig ausgeformt ist.In a further embodiment of the invention, it is advantageous that a groove guide between control arm and wear plate is provided. Such a guide, such as a dovetail guide allows a fast and exact arrangement the wear plate on the folding tooth. This allows maintenance times and maintenance costs are further reduced. A Material savings on the wear plate is according to the invention achieved in that the wear plate formed kidney-shaped is.

· Dabei ist es erfindungsgemäß, dass die Verschleißplatte an ihren Seitenbereichen abgeschrägt ausgebildet ist. Diese Abschrägung, welche gerade oder bogenförmig sein kann, erlaubt ein sanftes Zusammenspiel mit der Steuerleiste, so dass der Klappzahn weitgehend ruckfrei ein- und ausgeklappt werden kann. Auch dies wirkt sich positiv auf die Lebenszeit des Klappzahnes aus.It is according to the invention that the wear plate on their Side regions is formed chamfered. This bevel, which may be straight or curved, allowed a gentle interaction with the control bar, so that the Folded tooth can be folded in and out largely without jerking can. This also has a positive effect on the lifetime of the person Folding tooth off.

Der erfindungsgemäße Klappzahn kann grundsätzlich an verschiedensten Fräsrädern zum Einsatz kommen. Eine bevorzugte Anwendung stellt jedoch der Einsatz bei einer Schlitzwandfräse dar, wie sie im Spezialtiefbau zum Erstellen von Stütz- und Dichtwänden eingesetzt wird. The folding tooth according to the invention can basically be used on a wide variety of different types Milling wheels are used. A preferred application however, is the use of a trench cutter, as in special foundation engineering for the creation of supporting and sealing walls is used.

Die Erfindung wird weiter anhand eines bevorzugten Ausführungsbeispieles erläutert, welches schematisch in den beigefügten Zeichnungen dargestellt ist. In den Zeichnungen zeigen:

Fig.1
eine schematische, teilgeschnittene Ansicht eines erfindungsgemäßen Klappzahnes an einem Lagerschild;
Fig. 2
eine Draufsicht auf einen erfindungsgemäßen Klappzahn;
Fig. 3
eine Seitenansicht des Klappzahns von Fig. 2;
Fig. 4
eine Teilquerschnittsansicht des Klappzahns gemäß dem Schnitt A-A von Fig. 2; und
Fig. 5
eine perspektivische Ansicht einer Verschleißplatte für einen erfindungsgemäßen Klappzahn.
The invention will be further explained by means of a preferred embodiment, which is shown schematically in the accompanying drawings. In the drawings show:
Fig.1
a schematic, partially sectioned view of a folding tooth according to the invention on a bearing plate;
Fig. 2
a plan view of a folding tooth according to the invention;
Fig. 3
a side view of the folding tooth of Fig. 2;
Fig. 4
a partial cross-sectional view of the folding tooth according to the section AA of Fig. 2; and
Fig. 5
a perspective view of a wear plate for a folding tooth according to the invention.

Gemäß Fig. 1 ist die Anordnung und die Funktion eines erfindungsgemäßen Klappzahnes 10 an einem Lagerschild 5 einer Schlitzwandfräse dargestellt. An dem Lagerschild 5 sind zu beiden Seiten je zwei Fräsräder drehbar gelagert, welche aus Übersichtsgründen nicht dargestellt sind. An der dem Lagerschild 5 zugewandten Seite der Fräsräder sind Schwenkbolzen 18 angeordnet, an welchen ein Klappzahn 10 in bekannter Weise schwenkbar gelagert ist. Die Schwenkbewegung des Klappzahns 10 wird durch eine am Lagerschild 5 befestigte Steuerleiste 7 vorgegeben, entlang welcher der Klappzahn 10 entlang gleitet. In Fig. 1 ist die Betriebsstellung gezeigt, in welcher der Klappzahn 10 ausgeklappt ist, so dass das Bodenmaterial unterhalb des Lagerschildes 5 abgearbeitet werden kann. Der Aufbau und die Funktion des Klappzahnes 10 werden im Zusammenhang mit den Fig. 2 bis 4 näher erläutert.According to Fig. 1, the arrangement and the function of an inventive Folding tooth 10 on a bearing plate 5 a Trench wall cutter shown. At the end plate 5 are to two sides each rotatably mounted two cutting wheels, which made For reasons of clarity are not shown. At the end of the bearing plate 5 facing side of the cutting wheels are pivot pin 18th arranged on which a folding tooth 10 in a known manner is pivotally mounted. The pivoting movement of the folding tooth 10 is replaced by a fixed to the bearing plate 5 control bar. 7 along which the folding tooth 10 slides along. In Fig. 1, the operating position is shown in which the Folding tooth 10 is unfolded, leaving the bottom material underneath of the bearing plate 5 can be processed. The structure and the function of the folding tooth 10 are associated with Figs. 2 to 4 explained in more detail.

Der Klappzahn 10 weist einen einstückigen Grundkörper 11 auf, in welchem ein Schwenklager 12 zur Aufnahme des an der Fräsradnabe befestigten Schwenkbolzen vorgesehen ist. Zur Bildung des Schwenklagers 12 sind, wie aus Fig. 4 zu ersehen ist, zwei durch eine Nut 15 getrennte Lagerwände 14 ausgebildet, in welchen jeweils ein Lagerauge 16 ausgebohrt ist. Die beiden Lageraugen 16 sind koaxial zueinander ausgerichtet, so dass der Schwenkbolzen 18, gegebenenfalls mit einer Gleithülse eingeführt und so der Klappzahn 10 schwenkbar gelagert werden kann. Zur Aufnahme nur schematisch angedeuteter Fräszähne 24 ist am Grundkörper 11 ein sogenannter Fräszahnhalter 20 ausgebildet, in welchen zwei Aufnahmen 22 für die Fräszähne eingebracht sind. Zur Verbesserung der Elastizität sowie zum besseren Ausschwenken des Klappzahnes 10 ist zwischen dem Schwenklager 12 und dem Fräszahnhalter 20 am Grundkörper 11 eine Verjüngung 26 ausgebildet, so dass eine insgesamt sanduhrähnliche Form am Grundkörper 11 gegeben ist.The folding tooth 10 has an integral base body 11, in which a pivot bearing 12 for receiving the at the Fräsradnabe attached pivot pin is provided. For education of the pivot bearing 12 are, as can be seen from Fig. 4, two formed by a groove 15 separate bearing walls 14, in which each bearing eye 16 is drilled out. The two bearing eyes 16 are aligned coaxially with each other, so that the Pivot bolt 18, optionally introduced with a sliding sleeve and so the folding tooth 10 can be pivotally mounted. For receiving only schematically indicated cutting teeth 24 is on Base body 11 a so-called Fräszahnhalter 20 is formed, in which two receptacles 22 introduced for the cutting teeth are. To improve the elasticity and to better swing out of the folding tooth 10 is between the pivot bearing 12th and the milling tooth holder 20 on the main body 11, a taper 26th formed so that a total hourglass-like shape on Basic body 11 is given.

Vom Lagerbereich 12 weg erstreckt sich etwa entgegengesetzt zum Fräszahnhalter 20 ein sogenannter Steuerarm 30, welcher ebenfalls einstückig am Grundkörper 11 ausgebildet ist. Am freien Ende des Steuerarms 30 ist eine etwa nierenförmige Verschleißplatte 34 mittels Schraubverbindung 36 lösbar und auswechselbar befestigt. Die Verschleißplatte 34 wird nachfolgend näher im Zusammenhang mit Fig. 5 beschrieben.From the storage area 12 away extends approximately opposite for milling tooth holder 20 a so-called control arm 30, which also integrally formed on the base body 11. At the free end of the control arm 30 is an approximately kidney-shaped wear plate 34 detachable and replaceable by means of screw 36 attached. The wear plate 34 will be below described in more detail in connection with FIG. 5.

Die vergrößerte Darstellung von Fig. 5 zeigt die nierenförmige Frontfläche 38 der Verschleißplatte 34, wobei sich seitlich an einem Mittelstück 40 Abschrägungen 42 anschließen. Die Abschrägungen 42 dienen zu einem sanften, ruckfreien Gleiten der Verschleißplatte 34 entlang der Steuerleiste 7 am Lagerschild 5.The enlarged view of FIG. 5 shows the kidney-shaped Front surface 38 of the wear plate 34, being laterally on connect a chamfer 40 bevels 42. The bevels 42 serve for a smooth, smooth gliding the Wear plate 34 along the control bar 7 on the bearing plate 5th

Auf der von der Frontplatte 38 abgewandten Rückseite ist schematisch eine Führungsnut 44 angedeutet, welche zum einfachen und genauen Postieren der Verschleißplatte 34 am Klappzahn 10 dient. Weiterhin sind an der Rückseite in einem oberen Bereich zwei schematisch angedeutete Gewindebohrungen 46 vorgesehen, welche zur Schraubbefestigung der Verschleißplatte 34 am Grundkörper 11 dienen. Im Bereich der Gewindebohrung 46 sind zum Verschleißschutz und zur Sicherstellung einer ausreichenden Festigkeit Materialaufhäufungen 48 vorgesehen.On the side facing away from the front panel 38 back is schematic a guide groove 44 indicated, which for easy and accurately posting the wear plate 34 to the folding tooth 10 serves. Furthermore, at the back are in an upper area two schematically indicated threaded bores 46 are provided, which for screw mounting the wear plate 34 on Base body 11 serve. In the area of the threaded bore 46 are for wear protection and to ensure a sufficient Strength material heaps 48 provided.

Claims (12)

Klappzahn für ein Fräsrad mit einem Schwenklager (12) zum schwenkbaren Halten an einem Schwenkbolzen (18) an einer Fräsradnabe, einem sich vom Schwenklager (12) weg erstreckenden Fräszahnhalter (20) und einem sich vom Schwenklager (12) im Wesentlichen entgegengesetzt zur Richtung des Fräszahnhalters (20) weg erstreckenden Steuerarms (30), dadurch gekennzeichnet, dass das Schwenklager (12), der Fräszahnhalter (20) und der Steuerarm (30) als ein einstückiger Träger ausgebildet sind.Folding tooth for a cutting wheel with a pivot bearing (12) for pivotally supporting on a pivot pin (18) on a cutting wheel hub, a milling tooth holder (20) extending from the pivot bearing (12) and a control arm (30) extending away from the pivot bearing (12) substantially opposite to the direction of the milling tooth holder (20), characterized in that the pivot bearing (12), the Fräszahnhalter (20) and the control arm (30) are formed as a one-piece carrier. Klappzahn nach Anspruch 1,
dadurch gekennzeichnet, dass an dem Fräszahnhalter (20) eine Aufnahme (22) ausgebildet ist, in welcher gehärtete Fräszähne (24) lösbar befestigt sind.Folding tooth according to claim 1,
characterized in that on the Fräszahnhalter (20) has a receptacle (22) is formed, in which hardened cutting teeth (24) are releasably secured. Klappzahn nach Anspruch 1 oder 2,
dadurch gekennzeichnet, dass am Fräszahnhalter (20) zwischen dem Schwenklager (12) und einer Aufnahme (22) für die Fräszähne (24) eine Verjüngung (26) ausgebildet ist.Folding tooth according to claim 1 or 2,
characterized in that the milling tooth holder (20) between the pivot bearing (12) and a receptacle (22) for the cutting teeth (24) has a taper (26) is formed. Klappzahn nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet, dass das Schwenklager (12) mindestens zwei zueinander beabstandete Lagerwände (14) aufweist, welche mit einem zueinander koaxialen Lagerauge (16) versehen sind.Folding tooth according to one of claims 1 to 3,
characterized in that the pivot bearing (12) has at least two mutually spaced bearing walls (14) which are provided with a mutually coaxial bearing eye (16). Klappzahn nach einem der Ansprüche 1 bis 4,
dadurch gekennzeichnet, dass im Bereich des Steuerarms (30) ein Anschlagelement (32) angeordnet ist.Folding tooth according to one of claims 1 to 4,
characterized in that in the region of the control arm (30) a stop element (32) is arranged. Klappzahn für ein Fräsrad mit einem Schwenklager (12) zum schwenkbaren Halten an einem Schwenkbolzen (18) an einer Fräsradnabe, einem sich vom Schwenklager (12) weg erstreckenden Fräszahnhalter (20) und eine sich vom Schwenklager (12) im Wesentlichen entgegengesetzt zur Richtung des Fräszahnhalters (20) weg erstreckenden Steuerarm (30), insbesondere nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass an dem Steuerarm (30) eine Verschleißplatte (34) lösbar und auswechselbar gehaltert ist. Folding tooth for a cutting wheel with a pivot bearing (12) for pivotally supporting on a pivot pin (18) on a cutting wheel hub, a milling tooth holder (20) extending from the pivot bearing (12) and a control arm (30) extending away from the pivot bearing (12) substantially opposite to the direction of the milling tooth holder (20), in particular according to one of claims 1 to 5, characterized, that on the control arm (30) a wear plate (34) is releasably and replaceably supported. Klappzahn nach Anspruch 6,
dadurch gekennzeichnet, dass die Verschleißplatte (34) mit dem Steuerarm (30) verschraubt ist.Folding tooth according to claim 6,
characterized in that the wear plate (34) is screwed to the control arm (30). Klappzahn nach Anspruch 6 oder 7,
dadurch gekennzeichnet, dass eine Nutführung zwischen dem Steuerarm (30) und der Verschleißplatte (34) vorgesehen ist.Folding tooth according to claim 6 or 7,
characterized in that a groove guide between the control arm (30) and the wear plate (34) is provided. Klappzahn nach einem der Ansprüche 6 bis 8,
dadurch gekennzeichnet, dass die Verschleißplatte (34) nierenförmig ausgeformt ist.Folding tooth according to one of claims 6 to 8,
characterized in that the wear plate (34) is kidney-shaped. Klappzahn nach einem der Ansprüche 6 bis 9,
dadurch gekennzeichnet, dass die Verschleißplatte (34) an ihren Seitenbereichen abgeschrägt ausgebildet ist.Folding tooth according to one of claims 6 to 9,
characterized in that the wear plate (34) is chamfered at its side regions. Fräsrad,
dadurch gekennzeichnet, dass zumindest ein Klappzahn (10) nach einem der Ansprüche 1 bis 10 vorgesehen ist.cutting wheel,
characterized in that at least one folding tooth (10) is provided according to one of claims 1 to 10. Schlitzwandfräse,
dadurch gekennzeichnet, dass mindestens ein Fräsrad nach Anspruch 11 angeordnet ist.Trench cutter,
characterized in that at least one cutting wheel is arranged according to claim 11.
EP20040028688 2003-12-23 2004-12-03 Tiltable tooth. Expired - Lifetime EP1548192B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL04028688T PL1548192T3 (en) 2003-12-23 2004-12-03 Tiltable tooth.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2003160910 DE10360910B3 (en) 2003-12-23 2003-12-23 hinged tooth
DE10360910 2003-12-23

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EP1548192A1 true EP1548192A1 (en) 2005-06-29
EP1548192B1 EP1548192B1 (en) 2008-07-09

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ID=34530376

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US (1) US7278228B2 (en)
EP (1) EP1548192B1 (en)
JP (1) JP4046725B2 (en)
KR (1) KR100660398B1 (en)
CN (1) CN100385079C (en)
AT (1) ATE400707T1 (en)
CA (1) CA2489825C (en)
DE (2) DE10360910B3 (en)
ES (1) ES2308092T3 (en)
PL (1) PL1548192T3 (en)
RU (1) RU2292425C2 (en)
SG (1) SG113022A1 (en)

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EP4311882A1 (en) * 2022-07-28 2024-01-31 BAUER Maschinen GmbH Slurry wall cutter and method for creating a milled slot in the ground
EP4375422A1 (en) * 2022-11-24 2024-05-29 Liebherr-Werk Nenzing GmbH Slotted wall milling cutter

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IT1400429B1 (en) 2009-12-15 2013-05-31 Soilmec Spa TOOL FOR THIN DIAPHRAGMENTS.
EP2378002B1 (en) * 2010-04-16 2013-07-17 BAUER Maschinen GmbH Machining device for producing vertical slits in the ground
CN105723032A (en) 2013-08-27 2016-06-29 包尔特殊基础工程有限公司 Earth-working tool and method for earth-working
CN105625439B (en) * 2014-10-28 2018-09-04 徐工集团工程机械股份有限公司 The milling wheel and slotter of tooth are swung with radial type
CN110158693B (en) * 2019-05-23 2024-03-01 江苏徐工工程机械研究院有限公司 Milling cutter tooth assembly and double-wheel milling wheel
DE102019135781A1 (en) * 2019-12-23 2021-06-24 Marcus Burg Folding tooth for a milling wheel
EP4311881B1 (en) 2022-07-27 2025-04-02 BAUER Maschinen GmbH Cutting wheel for a trench wall cutter and method for the conversion of a cutting wheel
DE102022131341A1 (en) * 2022-11-28 2024-05-29 Liebherr-Werk Nenzing Gmbh Diaphragm wall cutter

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EP4375422A1 (en) * 2022-11-24 2024-05-29 Liebherr-Werk Nenzing GmbH Slotted wall milling cutter

Also Published As

Publication number Publication date
HK1080525A1 (en) 2006-04-28
US20050132620A1 (en) 2005-06-23
JP2005180173A (en) 2005-07-07
RU2004136900A (en) 2006-05-27
JP4046725B2 (en) 2008-02-13
CA2489825A1 (en) 2005-06-23
EP1548192B1 (en) 2008-07-09
ATE400707T1 (en) 2008-07-15
US7278228B2 (en) 2007-10-09
SG113022A1 (en) 2005-07-28
CA2489825C (en) 2008-07-15
KR20050065316A (en) 2005-06-29
DE10360910B3 (en) 2005-09-15
CN100385079C (en) 2008-04-30
PL1548192T3 (en) 2008-12-31
DE502004007544D1 (en) 2008-08-21
RU2292425C2 (en) 2007-01-27
ES2308092T3 (en) 2008-12-01
CN1641116A (en) 2005-07-20
KR100660398B1 (en) 2006-12-26

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