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EP1548192B1 - Tiltable tooth. - Google Patents

Tiltable tooth. Download PDF

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Publication number
EP1548192B1
EP1548192B1 EP20040028688 EP04028688A EP1548192B1 EP 1548192 B1 EP1548192 B1 EP 1548192B1 EP 20040028688 EP20040028688 EP 20040028688 EP 04028688 A EP04028688 A EP 04028688A EP 1548192 B1 EP1548192 B1 EP 1548192B1
Authority
EP
European Patent Office
Prior art keywords
cutting
tooth
pivot bearing
hinged
steering 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.)
Expired - Lifetime
Application number
EP20040028688
Other languages
German (de)
French (fr)
Other versions
EP1548192A1 (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 pivot bearing, for pivotally holding on a pivot pin on a Fräsradnabe, extending away from the pivot bearing Fräszahnhalter and extending from the pivot bearing substantially opposite to the direction of the Fräszahnhalters away control arm.
  • folding teeth are from the EP 0 291 027 B1 known, which also goes back to the applicant.
  • the EP 0 291 027 B1 proposed to store hingedly adjacent to the bearing plate cutting teeth on the cutting wheels.
  • the folding teeth can be folded into an area below the milling blade to work off underlying ground area, while in a further rotation of the cutting wheel, the folding teeth are folded back so that the bearing plate is not damaged by the cutting teeth.
  • folding teeth for cutting wheels are in the publications EP 1 350 893 A1 and FR 2 805 552 A1 described.
  • the folding of the folding tooth is carried out in each case by a piston arranged on the cutting wheel.
  • DE 39 26 976 A1 discloses a device for introducing a substantially vertical bottom slot in the course of producing a sealing and supporting wall with a pivotable Räumtechnik. This is designed as a two-armed pivot lever having a cutting tool at the outer end.
  • the folding teeth are exposed by their necessary inclination quite significant forces and loads, especially when harder ground or rocky ground must be edited.
  • the known folding teeth are thus exposed to very heavy wear and can also suffer premature damage, which make an early replacement necessary.
  • An exchange of the folding teeth leads Not only relatively long and therefore costly downtime of the investment-intensive trench wall cutter, but the folding teeth are relatively expensive because of their necessary pivot bearing and the required wear resistance.
  • 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 according to claim 1 is characterized in that the pivot bearing, the Fräs leopardhalter and the control arm are formed as a one-piece carrier.
  • the folding tooth can be produced by casting or forging, but a preferred production is given by a flame cutting of a sheet. Compared to the design as a welded construction, the one-piece design of the pivot bearing and the individual arms of the folding tooth provides improved strength while reducing manufacturing costs.
  • a preferred embodiment der_Erfindung is that on the Fräszahnhalter a receptacle is formed in which hardened cutting teeth are releasably secured.
  • the ground breaking cutting teeth made of a specially hardened material can be used.
  • connection to the carrier conventional non-positive and positive connection means and joining methods can be used.
  • a taper is formed on the milling strip holder between the pivot bearing and the receptacle for the cutting teeth.
  • a taper allows improved elasticity of the above Milling tooth holder, so that bending stresses can be absorbed in the tapered position and thus the pivot bearing is relieved.
  • this taper can also allow even better pivoting of the folding tooth on the milling blade.
  • the pivot bearing may be formed as a single bearing eye, which has been introduced by flame cutting or drilling in the carrier.
  • the pivot bearing has at least two mutually spaced bearing walls, which are each provided with a mutually coaxially arranged bearing eye.
  • the bearing walls can be made by inserting a groove in the integral carrier.
  • the bearing eyes can also be manufactured by flame cutting or drilling.
  • a further preferred embodiment of the invention consists in that a stop element is arranged in the region of the control arm. This serves for contacting the control arm with the Fräsradnabe on which the folding tooth is mounted. This stop limits the maximum fold-out angle to the end plate.
  • the stop element may be made of a highly wear-resistant material, since the folding teeth exert considerable pressure on the stop element by the pending floor during operation.
  • a further solution according to claim 6 of the aforementioned object consists according to the invention in that on the control arm a wear plate is detachably and removably supported.
  • the wear plate serves as a cam follower element for contacting the folding tooth with the control bar on the milling blade, by which time and scope of the deflection of the folding tooth are determined depending on the rotational position of the cutting wheel. Unlike the abovementioned stop element, this wear plate is exposed to a significant sliding friction due to the function.
  • the wear plate therefore preferably comprises lubricating metal alloys, such as bronze or brass can contain.
  • the wear plate can be made separately, thereby reducing the total cost of manufacturing of the folding tooth. With appropriate wear, the wear plate can be replaced quickly and inexpensively, while the support of the folding tooth remains attached to the cutting wheel.
  • the wear plate is bolted to the control arm.
  • a screw is particularly inexpensive to produce and can be easily solved and re-attached.
  • a groove guide between the control arm and wear plate is provided.
  • a guide such as a dovetail guide allows a quick and accurate placement of the wear plate on the folding tooth. As a result, maintenance times and maintenance costs can be further reduced.
  • a material savings on the wear plate is inventively achieved in that the wear plate is formed kidney-shaped.
  • the wear plate is bevelled at its side regions.
  • This bevel which may be straight or arcuate, allows a smooth interaction with the control bar, so that the folding tooth can be folded and unfolded largely smoothly. This also has a positive effect on the lifetime of the folding tooth.
  • the folding tooth invention can basically be used on a variety of cutting wheels.
  • a preferred application is the use in a trench wall cutter, as used in special civil engineering for creating support and sealing walls.
  • Fig. 1 the arrangement and the function of a folding tooth 10 according to the invention is shown on a bearing plate 5 of a trench wall cutter.
  • two milling wheels are rotatably mounted on both sides, which are not shown for reasons of clarity.
  • pivot pin 18 are arranged, on which a folding tooth 10 is pivotally mounted in a known manner.
  • the pivoting movement of the folding tooth 10 is determined by a fixed to the bearing plate 5 control bar 7, along which the folding tooth 10 slides along.
  • Fig. 1 the operating position is shown, in which the folding tooth 10 is unfolded, so that the soil material below the bearing plate 5 can be processed.
  • the structure and function of the folding tooth 10 are in connection with the Fig. 2 to 4 explained in more detail.
  • the folding tooth 10 has an integral base body 11 in which a pivot bearing 12 is provided for receiving the pivot pin attached to the Fräsradnabe.
  • a pivot bearing 12 is provided for receiving the pivot pin attached to the Fräsradnabe.
  • the pivot bearing 12 are as out Fig. 4 it can be seen, two formed by a groove 15 separate bearing walls 14, in each of which a bearing eye 16 is bored.
  • the two bearing lugs 16 are aligned coaxially with each other, so that the pivot pin 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 on the base body 11, in which two receptacles 22 are introduced for the cutting teeth.
  • a taper 26 is formed between the pivot bearing 12 and the Fräs leopardhalter 20 on the base body 11, so that a total hourglass-like shape is given to the base body 11.
  • control arm 30 From the storage area 12 away extends approximately opposite to the Fräs leopardhalter 20 a so-called control arm 30, which is 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 releasably secured by means of screw 36 and replaceable. The wear plate 34 will be described in more detail below Fig. 5 described.
  • Fig. 5 shows the kidney-shaped front surface 38 of the wear plate 34, wherein laterally at a middle piece 40 chamfers 42 connect.
  • the chamfers 42 serve for a smooth, jerk-free sliding of the wear plate 34 along the control bar 7 on the bearing plate. 5
  • a guide groove 44 is schematically indicated, which serves for easy and accurate posting of the wear plate 34 on the folding tooth 10.
  • two schematically indicated threaded bores 46 are provided on the rear side in an upper region, which serve for screw fastening the wear plate 34 to the base body 11.
  • material heaps 48 are provided for wear protection and to ensure sufficient strength.

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)
  • Component Parts Of Construction Machinery (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Steering-Linkage Mechanisms And Four-Wheel Steering (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
  • Milling Processes (AREA)
  • Rear-View Mirror Devices That Are Mounted On The Exterior Of The Vehicle (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 pivot bearing, for pivotally holding on a pivot pin on a Fräsradnabe, extending away from the pivot bearing Fräszahnhalter and extending from the pivot bearing substantially opposite to the direction of the Fräszahnhalters away 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 from the EP 0 291 027 B1 known, which also goes back to the applicant. In trench wall milling with cutting wheels arranged laterally on a bearing plate, there is the problem that the bottom region immediately below the end shield can not be processed directly by the cutting wheels. Therefore, in the EP 0 291 027 B1 proposed to store hingedly adjacent to the bearing plate cutting teeth on the cutting wheels. By a kind of cam control, the folding teeth can be folded into an area below the milling blade to work off underlying ground area, while in a further rotation of the cutting wheel, the folding teeth are folded back so that the bearing plate is not damaged by the cutting teeth.

Weitere Klappzähne für Fräsräder sind in den Druckschriften EP 1 350 893 A1 und FR 2 805 552 A1 beschrieben. Die Einklappung des klappbaren Zahns erfolgt dabei jeweils durch einen am Fräsrad angeordneten Kolben.Further folding teeth for cutting wheels are in the publications EP 1 350 893 A1 and FR 2 805 552 A1 described. The folding of the folding tooth is carried out in each case by a piston arranged on the cutting wheel.

In der DE 39 26 976 A1 ist eine Vorrichtung zum Einbringen eines im Wesentlichen vertikalen Bodenschlitzes im Zuge der Herstellung einer Dicht- und Stützwand mit einem schwenkbaren Räumzahn offenbart. Dieser ist als ein zweiarmiger Schwenkhebel ausgeführt, der am äußeren Ende ein Schneidwerkzeug aufweist.In the DE 39 26 976 A1 discloses a device for introducing a substantially vertical bottom slot in the course of producing a sealing and supporting wall with a pivotable Räumzahn. This is designed as a two-armed pivot lever having a cutting tool at the outer end.

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 exposed by their necessary inclination quite significant forces and loads, especially when harder ground or rocky ground must be edited. The known folding teeth are thus exposed to very heavy wear and can also suffer premature damage, which make an early replacement necessary. An exchange of the folding teeth leads Not only relatively long and therefore costly downtime of the investment-intensive trench wall cutter, but the folding teeth are relatively expensive because of their necessary pivot bearing and the required wear resistance.

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, wherein preferred embodiments are specified in the dependent claims.

Ein nach Anspruch 1 erfindungsgemäßer Klappzahn ist dadurch gekennzeichnet, dass das Schwenklager, der Fräszahnhalter und der Steuerarm als einstückiger Träger ausgebildet sind.A folding tooth according to the invention according to claim 1 is characterized in that the pivot bearing, the Fräszahnhalter and the control arm are formed as a one-piece carrier.

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.The folding tooth can be produced by casting or forging, but a preferred production is given by a flame cutting of a sheet. Compared to the design as a welded construction, the one-piece design of the pivot bearing and the individual arms of the folding tooth provides improved strength while reducing manufacturing 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 der_Erfindung is that on the Fräszahnhalter a receptacle is formed in which hardened cutting teeth are releasably secured. In the one-piece carrier, the ground breaking cutting teeth made of a specially hardened material can be used. For connection to the carrier conventional non-positive and positive connection means and joining methods can be 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 a taper is formed on the milling strip holder between the pivot bearing and the receptacle for the cutting teeth. Such a taper allows improved elasticity of the above Milling tooth holder, so that bending stresses can be absorbed in the tapered position and thus the pivot bearing is relieved. In addition, this taper can also allow even better pivoting of the folding tooth on the milling blade.

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.In principle, the pivot bearing may be formed as a single bearing eye, which has been introduced by flame cutting or drilling in the carrier. For improved elasticity of the pivot bearing, it is inventively provided that the pivot bearing has at least two mutually spaced bearing walls, which are each provided with a mutually coaxially arranged bearing eye. The bearing walls can be made by inserting a groove in the integral carrier. The bearing eyes can also be manufactured 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.A further preferred embodiment of the invention consists in that a stop element is arranged in the region of the control arm. This serves for contacting the control arm with the Fräsradnabe on which the folding tooth is mounted. This stop limits the maximum fold-out angle to the end plate. The stop element may be made of a highly wear-resistant material, since the folding teeth exert considerable pressure on the stop element by the pending floor during operation.

Eine nach Anspruch 6 weitere Lösung der eingangs genannten Aufgabe besteht nach der Erfindung darin, dass an dem Steuerarm eine Verschleißplatte lösbar und auswechselbar gehaltert ist.A further solution according to claim 6 of the aforementioned object consists according to the invention in that on the control arm a wear plate is detachably and removably supported.

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.The wear plate serves as a cam follower element for contacting the folding tooth with the control bar on the milling blade, by which time and scope of the deflection of the folding tooth are determined depending on the rotational position of the cutting wheel. Unlike the abovementioned stop element, this wear plate is exposed to a significant sliding friction due to the function. The wear plate therefore preferably comprises lubricating metal alloys, such as bronze or brass can contain. The wear plate can be made separately, thereby reducing the total cost of manufacturing of the folding tooth. With appropriate wear, the wear plate can be replaced quickly and inexpensively, while the support of the folding tooth remains attached to the cutting wheel.

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 solved and re-attached.

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 the control arm and wear plate is provided. Such a guide, such as a dovetail guide allows a quick and accurate placement of the wear plate on the folding tooth. As a result, maintenance times and maintenance costs can be further reduced. A material savings on the wear plate is inventively achieved in that the wear plate is formed kidney-shaped.

· 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 is bevelled at its side regions. This bevel, which may be straight or arcuate, allows a smooth interaction with the control bar, so that the folding tooth can be folded and unfolded largely smoothly. This also has a positive effect on the lifetime of the folding tooth.

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 invention can basically be used on a variety of cutting wheels. A preferred application, however, is the use in a trench wall cutter, as used in special civil engineering for creating support and sealing walls.

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 a folding tooth 10 according to the invention is shown on a bearing plate 5 of a trench wall cutter. On the bearing plate 5 two milling wheels are rotatably mounted on both sides, which are not shown for reasons of clarity. On the bearing plate 5 facing side of the cutting wheels pivot pin 18 are arranged, on which a folding tooth 10 is pivotally mounted in a known manner. The pivoting movement of the folding tooth 10 is determined 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, so that the soil material below the bearing plate 5 can be processed. The structure and function of the folding tooth 10 are in connection with the Fig. 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 is provided for receiving the pivot pin attached to the Fräsradnabe. To form the pivot bearing 12 are as out Fig. 4 it can be seen, two formed by a groove 15 separate bearing walls 14, in each of which a bearing eye 16 is bored. The two bearing lugs 16 are aligned coaxially with each other, so that the pivot pin 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, a so-called Fräszahnhalter 20 is formed on the base body 11, in which two receptacles 22 are introduced for the cutting teeth. To improve the elasticity and to better swing out the folding tooth 10, a taper 26 is formed between the pivot bearing 12 and the Fräszahnhalter 20 on the base body 11, so that a total hourglass-like shape is given to the base body 11.

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 to the Fräszahnhalter 20 a so-called control arm 30, which is 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 releasably secured by means of screw 36 and replaceable. The wear plate 34 will be described in more detail below Fig. 5 described.

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, wherein laterally at a middle piece 40 chamfers 42 connect. The chamfers 42 serve for a smooth, jerk-free sliding of the wear plate 34 along the control bar 7 on the bearing plate. 5

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 a guide groove 44 is schematically indicated, which serves for easy and accurate posting of the wear plate 34 on the folding tooth 10. Furthermore, two schematically indicated threaded bores 46 are provided on the rear side in an upper region, which serve for screw fastening the wear plate 34 to the base body 11. In the region of the threaded bore 46, material heaps 48 are provided for wear protection and to ensure sufficient strength.

Claims (12)

  1. Hinged tooth for a cutting wheel comprising
    - a pivot bearing (12) for pivotally supporting on a pivot pin (18) located on a cutting wheel hub,
    - a cutting tooth support (20) extending away from the pivot bearing (12) and
    - a steering arm (30) extending away from the pivot bearing (12) substantially in a direction opposite to that of the cutting tooth support (20),
    characterized in that
    the pivot bearing (12), the cutting tooth support (20) and the steering arm (30) are designed as a one-piece support.
  2. Hinged tooth according to claim 1,
    characterized in that
    a receiving portion (22) is designed on the cutting tooth support (20), in which hardened cutting teeth (24) detachably mounted.
  3. Hinged tooth according to claim 1 or 2,
    characterized in that
    a tapering (26) is designed on the cutting tooth support (20) between the pivot bearing (12) and a receiving portion (22) for the cutting teeth (24).
  4. Hinged tooth according to any one of claims 1 to 3,
    characterized in that
    the pivot bearing (12) includes at least two mutually spaced bear bearing walls (14) which are provided with a mutually coaxial bearing eye (16).
  5. Hinged tooth according to any one of claims 1 to 4,
    characterized in that
    a stop member (32) is arranged in the portion of the steering arm (30).
  6. Hinged tooth for a cutting wheel comprising
    - a pivot bearing (12) for pivotally supporting on a pivot pin (18) located on a cutting wheel hub,
    - a cutting tooth support (20) extending away from the pivot bearing (12) and
    - a steering arm (30) extending away from the pivot bearing (12) substantially in a direction opposite to that of the cutting tooth support (20), in particular to any one of claims 1 to 5,
    characterized in that
    a wearing plate (34) is detachably and exchangeably supported on the steering arm (30).
  7. Hinged tooth according to claim 6,
    characterized in that
    the wearing plate (34) is screwed onto the steering arm (30).
  8. Hinged tooth according to claim 6 or 7,
    characterized in that
    a guide groove is provided between the steering arm (30) and the wearing plate (34).
  9. Hinged tooth according to any one of claims 6 to 8,
    characterized in that
    the wearing plate (34) is designed in a kidney-shaped manner.
  10. Hinged tooth according to any one of claims 6 to 9,
    characterized in that
    the wearing plate (34) is designed at its side portions in a beveled manner.
  11. A cutting wheel,
    characterized in that
    at least one hinged tooth (10) is provided according to any one of claims 1 to 10.
  12. A 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
DE10360910 2003-12-23
DE2003160910 DE10360910B3 (en) 2003-12-23 2003-12-23 hinged tooth

Publications (2)

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

Family

ID=34530376

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20040028688 Expired - Lifetime EP1548192B1 (en) 2003-12-23 2004-12-03 Tiltable tooth.

Country Status (12)

Country Link
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)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019135781A1 (en) * 2019-12-23 2021-06-24 Marcus Burg Folding tooth for a milling wheel
EP4311881A1 (en) 2022-07-27 2024-01-31 BAUER Maschinen GmbH Cutting wheel for a trench wall cutter and method for the conversion of a cutting wheel
EP4311882A1 (en) 2022-07-28 2024-01-31 BAUER Maschinen GmbH Slurry wall cutter and method for creating a milled slot in the ground

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US9790742B2 (en) 2013-08-27 2017-10-17 Bauer Spezialtiefbau Gmbh Drilling apparatus and method for drilling
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
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DE102022131341A1 (en) * 2022-11-28 2024-05-29 Liebherr-Werk Nenzing Gmbh Diaphragm wall cutter

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019135781A1 (en) * 2019-12-23 2021-06-24 Marcus Burg Folding tooth for a milling wheel
EP4311881A1 (en) 2022-07-27 2024-01-31 BAUER Maschinen GmbH Cutting wheel for a trench wall cutter and method for the conversion of a cutting wheel
WO2024022816A1 (en) 2022-07-27 2024-02-01 Bauer Maschinen Gmbh Milling wheel for a diaphragm wall cutter, and method for modifying a milling wheel
EP4311882A1 (en) 2022-07-28 2024-01-31 BAUER Maschinen GmbH Slurry wall cutter and method for creating a milled slot in the ground

Also Published As

Publication number Publication date
DE10360910B3 (en) 2005-09-15
CN100385079C (en) 2008-04-30
RU2292425C2 (en) 2007-01-27
JP2005180173A (en) 2005-07-07
ES2308092T3 (en) 2008-12-01
PL1548192T3 (en) 2008-12-31
SG113022A1 (en) 2005-07-28
KR100660398B1 (en) 2006-12-26
CA2489825C (en) 2008-07-15
HK1080525A1 (en) 2006-04-28
US20050132620A1 (en) 2005-06-23
CA2489825A1 (en) 2005-06-23
RU2004136900A (en) 2006-05-27
ATE400707T1 (en) 2008-07-15
CN1641116A (en) 2005-07-20
DE502004007544D1 (en) 2008-08-21
JP4046725B2 (en) 2008-02-13
EP1548192A1 (en) 2005-06-29
KR20050065316A (en) 2005-06-29
US7278228B2 (en) 2007-10-09

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