EP3023154B1 - Device for reversibly fixing a cutting tooth - Google Patents

Device for reversibly fixing a cutting tooth Download PDF

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Publication number
EP3023154B1
EP3023154B1 EP15195666.1A EP15195666A EP3023154B1 EP 3023154 B1 EP3023154 B1 EP 3023154B1 EP 15195666 A EP15195666 A EP 15195666A EP 3023154 B1 EP3023154 B1 EP 3023154B1
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EP
European Patent Office
Prior art keywords
tooth
cutting
seat
bore
prismatic
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EP15195666.1A
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German (de)
French (fr)
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EP3023154A3 (en
EP3023154A2 (en
Inventor
Volker Haas
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HAAS Holzzerkleinerungs- und Fordertechnik GmbH
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HAAS Holzzerkleinerungs- und Fordertechnik GmbH
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Priority to PL15195666T priority Critical patent/PL3023154T3/en
Publication of EP3023154A2 publication Critical patent/EP3023154A2/en
Publication of EP3023154A3 publication Critical patent/EP3023154A3/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
    • B02C18/16—Details
    • B02C18/18—Knives; Mountings thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
    • B02C18/14—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within horizontal containers
    • B02C18/145—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within horizontal containers with knives spaced axially and circumferentially on the periphery of a cylindrical rotor unit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C4/00—Crushing or disintegrating by roller mills
    • B02C4/02—Crushing or disintegrating by roller mills with two or more rollers
    • B02C4/08—Crushing or disintegrating by roller mills with two or more rollers with co-operating corrugated or toothed crushing-rollers

Definitions

  • An apparatus for a crushing device having a cutting shaft on which a plurality of cutting teeth is detachably mounted, a gear carrier disposed on the cutting shaft having a through hole provided stopper and provided for receiving the conical through hole provided with the cutting tooth, and with a through the Receiving bore protruding screw for clamping attachment of the cutting tooth in the tooth carrier by means of a provided with a central bore clamping bolt having a cooperating with the cone of the through hole counter cone, which can be tensioned on the guided through the central bore screw.
  • the invention also relates to a cutting shaft having a plurality of devices disposed about its circumference.
  • Such a device is for example from the DE 20 2009 005493 U1 known.
  • a device which has a tooth carrier on which a knife body and a knife (cutting tooth) are positively connected to each other.
  • the knife body has prismatically designed knife support surfaces which interact with congruent, ie corresponding surfaces on the knife, so that the knife is centered on the knife body when tightening the screw connection. A secure clamping of the knife on the knife body is only possible as far as the contact surfaces are exactly worked.
  • the tooth carriers are fixedly mounted on the cutting shaft, for example, welded to this.
  • the cutting shaft is used in a device for crushing waste products of various materials.
  • a device for crushing waste products of various materials is known from the DE 91 13 277 U1 or the DE 203 01 354 U1 .
  • the cutting teeth which break the crushed material, such as green waste, branches, old wood, pallets, logs, Kappab position, biomass, etc. rather than cutting very large forces.
  • the cutting teeth are subject to a correspondingly high level of wear and must be replaced in case of damage and / or wear.
  • the faster the change of cutting teeth the lower the downtime of the crushing device. Since the cutting teeth cooperate with housing-fixed counter blades or, if two cutting shafts are arranged parallel to each other, the cutting teeth of both shafts mesh with each other, they must be as possible clearance and permanently fixed in their seat.
  • the invention is therefore based on the object to improve a generic device so that a change of the cutting teeth can be done quickly and each cutting tooth can be braced without play in his seat. It is a further object of the invention to provide a cutting shaft having a plurality of devices disposed about its circumference.
  • the tooth carrier is provided with a second prismatic seat.
  • the second prismatic seat is arranged on the opposite side of the tooth carrier with respect to the circumferential direction.
  • two tooth carriers can then be arranged parallel to one another offset from one another on the cutting shaft in such a way that the first prismatic seat in the first tooth carrier lies opposite the second prismatic seat in the second tooth carrier.
  • the foot on the cutting tooth is then provided with respect to its vertical axis with a symmetrical prism and the leadership when clamping in the axial direction of the cutting shaft takes place in both seats.
  • the conical through hole in the cutting tooth and the counter-cone of the clamping bolt are preferably formed congruent. But it is also possible to use a bush between the clamping bolt and the cutting tooth whose outer contour to the through hole and the inner contour of the counter cone are congruent.
  • the use of a bushing has the advantage that as a result of the force acting on the cutting tooth high breaking forces occurring wear on the jack can be "collected" so that it can be eliminated by replacing the socket, which of course reduces maintenance costs.
  • clamping plates can preferably be arranged between the seat (s) in the tooth carrier and the foot of the cutting tooth. Any wear is then created by suitable choice of material on the clamping plates, which can also be replaced quickly and inexpensively.
  • FIG. 1 shows two circumferentially driven cutting shafts 100 having a plurality of distributed over its circumference arranged cutting teeth 10, which are each screwed in a tooth carrier 20.
  • the toothed carrier 20 are fixedly arranged in the axial direction A of the cutting shaft 100, for example, welded and spaced parallel to each other in the circumferential direction of the toothed shaft 100, such as FIG. 3 shows.
  • the tooth carriers 20 consist of a cuboid base body, on which a stop 23 projecting in the circumferential direction and a guide plate 26 triangular in cross-section are mounted.
  • Two prismatic seats 21, 24 are formed on opposite side edges of the base body, which are formed by two surfaces 21 ', 21 ", 24", 24 "which run at an angle to one another.
  • the stopper 23 is provided with a receiving bore 22.
  • the cutting tooth 10 has a head portion 13, a foot 12, and a through hole 11 formed conically at one end and formed cylindrically at the other end thereof.
  • the foot 12 is mirror-symmetrical to its vertical axis H. formed prismatic, wherein the prism by each two angularly extending surfaces 16 ', 16 ", 17', 17" is formed.
  • the foot 12 is congruent with the seats 21, 24, that is, the surfaces 21 ', 21 "and 17', 17” and 24 ', 24 "and 16', 16” correspond to each other, that is, they are congruent with each other.
  • a groove 14 (see FIG. 7) is introduced transversely to the line of symmetry H (in the axial direction A) into the head 13, into which the blade guard 15 can be inserted and fastened in the head 13, preferably being welded in (cf. FIG. 3 ).
  • a clamping bolt 30 is provided, which is provided at one end with a counter-cone 31 and has a central bore 32.
  • the counter-cone 31 opposite end 33 is cylindrical.
  • the tooth 10 is inserted into the prismatic seats 21, 24, the clamping bolt 30 inserted into the conical through hole 11, inserted through the receiving bore 22 in the stop 23 and the screw 50 inserted into the central bore 32 and then bolted to the nut 51, whereby the clamping bolt 30 dips into the conical bore 11 in the axial direction A and the counter-cone 31 pulls the tooth 10 in the axial direction against the stop 23 via the conical bore 11 and fixed in the seats 21, 24.
  • an internal thread provided in the region of the end can also be provided in the central bore 32.
  • a sleeve 40 may be used, which consists of a less hard material than the stopper 23 and the clamping bolt 30.
  • clamping plates 60 may be used, which are also made of a softer material than the tooth 10 and the tooth carrier 20 and serve to absorb wear.

Description

Einrichtung für eine Zerkleinerungsvorrichtung mit einer Schneidwelle auf der eine Mehrzahl von Schneidzähnen lösbar befestigt ist, einem auf der Schneidwelle angeordneten Zahnträger, der einen mit einer Durchgangsbohrung versehenen Anschlag aufweist und zur Aufnahme des mit einer konischen Durchgangsbohrung versehenen Schneidzahnes vorgesehen ist, und mit einer durch die Aufnahmebohrung hindurchragenden Schraube zur klemmenden Befestigung des Schneidzahnes im Zahnträger mittels eines mit einer zentralen Bohrung versehenen Spannbolzens, der eine mit dem Konus der Durchgangsbohrung zusammenwirkenden Gegenkonus aufweist, wobei über die durch die zentrale Bohrung hindurchgeführte Schraube spannbar ist. Die Erfindung betrifft außerdem eine Schneidwelle mit mehreren über ihren Umfang angeordneten Einrichtungen.An apparatus for a crushing device having a cutting shaft on which a plurality of cutting teeth is detachably mounted, a gear carrier disposed on the cutting shaft having a through hole provided stopper and provided for receiving the conical through hole provided with the cutting tooth, and with a through the Receiving bore protruding screw for clamping attachment of the cutting tooth in the tooth carrier by means of a provided with a central bore clamping bolt having a cooperating with the cone of the through hole counter cone, which can be tensioned on the guided through the central bore screw. The invention also relates to a cutting shaft having a plurality of devices disposed about its circumference.

Eine solche Einrichtung ist beispielsweise aus der DE 20 2009 005493 U1 bekannt.Such a device is for example from the DE 20 2009 005493 U1 known.

Aus der DE 20 2005 010 337 U1 ist eine Einrichtung bekannt, die über einen Zahnträger verfügt, auf dem ein Messerkörper und ein Messer (Schneidzahn) formschlüssig miteinander verbindbar sind. Der Messerkörper weist hierzu prismatisch ausgebildete Messerstützflächen auf, die mit kongruenten, also korrespondierenden Flächen am Messer zusammenwirken, sodass das Messer beim Festziehen der Verschraubung am Messerkörper zentriert wird. Ein sicheres Verspannen des Messers am Messerkörper ist nur soweit möglich, wie die Anlageflächen exakt gearbeitet sind.From the DE 20 2005 010 337 U1 a device is known which has a tooth carrier on which a knife body and a knife (cutting tooth) are positively connected to each other. For this purpose, the knife body has prismatically designed knife support surfaces which interact with congruent, ie corresponding surfaces on the knife, so that the knife is centered on the knife body when tightening the screw connection. A secure clamping of the knife on the knife body is only possible as far as the contact surfaces are exactly worked.

Die Zahnträger sind fest auf der Schneidwelle befestigt, beispielsweise mit dieser verschweißt. Die Schneidwelle findet in einer Vorrichtung zum Zerkleinern von Abfallprodukten aus verschiedenen Materialien Verwendung. Eine solche Vorrichtung ist beispielsweise bekannt aus der DE 91 13 277 U1 oder der DE 203 01 354 U1 . Auf die Schneidzähne, die das Zerkleinerungsgut, wie Grünschnitt, Astwerk, Altholz, Paletten, Rundholz, Kappabfälle, Biomasse usw. eher brechen als schneiden wirken sehr große Kräfte. Je nachdem, welches Abfallgut zerkleinert wird, unterliegen die Schneidzähne einem entsprechend hohem Verschleiß und müssen bei Beschädigung und/oder Abnutzung ausgetauscht werden. Je schneller der Wechsel der Schneidzähne erfolgt, umso geringer sind die Stillstandzeiten der Zerkleinerungsvorrichtung. Da die Schneidzähne mit gehäusefesten Gegenmessern zusammenwirken oder, wenn zwei Schneidwellen parallel nebeneinander angeordnet sind, die Schneidzähne beider Wellen miteinander kämmen, müssen diese möglichst spielfrei und dauerhaft fest in ihrem Sitz angeordnet sein.The tooth carriers are fixedly mounted on the cutting shaft, for example, welded to this. The cutting shaft is used in a device for crushing waste products of various materials. Such a device For example, is known from the DE 91 13 277 U1 or the DE 203 01 354 U1 , On the cutting teeth, which break the crushed material, such as green waste, branches, old wood, pallets, logs, Kappabfälle, biomass, etc. rather than cutting very large forces. Depending on which waste material is crushed, the cutting teeth are subject to a correspondingly high level of wear and must be replaced in case of damage and / or wear. The faster the change of cutting teeth, the lower the downtime of the crushing device. Since the cutting teeth cooperate with housing-fixed counter blades or, if two cutting shafts are arranged parallel to each other, the cutting teeth of both shafts mesh with each other, they must be as possible clearance and permanently fixed in their seat.

Der Erfindung liegt deshalb die Aufgabe zugrunde, eine gattungsgemäße Einrichtung so zu verbessern, dass ein Wechsel der Schneidzähne schnell erfolgen und jeder Schneidzahn spielfrei in seinem Sitz verspannt werden kann. Der Erfindung liegt ferner die Aufgabe zugrunde, eine Schneidwelle mit mehreren über ihren Umfang angeordneten Einrichtungen bereitzustellen.The invention is therefore based on the object to improve a generic device so that a change of the cutting teeth can be done quickly and each cutting tooth can be braced without play in his seat. It is a further object of the invention to provide a cutting shaft having a plurality of devices disposed about its circumference.

Zur Problemlösung zeichnet sich eine gattungsgemäße Einrichtung durch folgende Merkmale aus:

  1. a) in dem Zahnträger ist mindestens ein erster prismatisch ausgestalteter Sitz vorgesehen,
  2. b) am Schneidzahn ist ein mit dem Sitz zusammenwirkender Fuß ausgebildet,
  3. c) beim Spannen des Schneidzahnes wird der Fuß in den prismatischen Sitz des Zahnträgers und gegen den Anschlag verspannt.
To solve the problem, a generic device is characterized by the following features:
  1. a) in the tooth carrier at least a first prismatic ausgestalteter seat is provided,
  2. b) a foot cooperating with the seat is formed on the cutting tooth,
  3. c) when tensioning the cutting tooth, the foot is clamped in the prismatic seat of the tooth carrier and against the stop.

Durch Konus und Gegenkonus wird der Schneidzahn in axialer Richtung fest auf den Anschlag im Zahnträger gespannt, durch die prismatische Ausgestaltung des Sitzes erfolgt eine führungs- und spielfreie Anlage in Umfangsrichtung der Schneidwelle.By cone and counter-cone of the cutting tooth is clamped in the axial direction firmly on the stop in the tooth carrier, by the prismatic configuration of the seat is a management and play-free system in the circumferential direction of the cutting shaft.

Beim Wechseln des Schneidzahnes kann durch den Konus/Gegenkonus außerdem auch etwa entstandenes Spiel in Folge von Verschleiß ausgeglichen werden.When changing the cutting tooth can also be compensated by the cone / counter-cone as well as resulting game due to wear.

Vorzugsweise ist der Zahnträger mit einem zweiten prismatischen Sitz versehen. Der zweite prismatische Sitz ist bezogen auf die Umfangsrichtung auf der gegenüberliegenden Seite des Zahnträgers angeordnet. Dadurch können dann auf der Schneidwelle zwei Zahnträger parallel nebeneinander jeweils zueinander versetzt so angeordnet werden, dass der erste prismatische Sitz im ersten Zahnträger dem zweiten prismatischen Sitz im zweiten Zahnträger gegenüberliegt. Der Fuß am Schneidzahn ist dann gegenüber seiner Hochachse mit einem symmetrischen Prisma versehen und die Führung beim Verspannen in Axialrichtung der Schneidwelle erfolgt in beiden Sitzen.Preferably, the tooth carrier is provided with a second prismatic seat. The second prismatic seat is arranged on the opposite side of the tooth carrier with respect to the circumferential direction. As a result, two tooth carriers can then be arranged parallel to one another offset from one another on the cutting shaft in such a way that the first prismatic seat in the first tooth carrier lies opposite the second prismatic seat in the second tooth carrier. The foot on the cutting tooth is then provided with respect to its vertical axis with a symmetrical prism and the leadership when clamping in the axial direction of the cutting shaft takes place in both seats.

Die konische Durchgangsbohrung im Schneidzahn und der Gegenkonus des Spannbolzens sind vorzugsweise kongruent ausgebildet. Möglich ist es aber auch, zwischen dem Spannbolzen und dem Schneidzahn eine Buchse einzusetzen, deren Außenkontur zur Durchgangsbohrung und deren Innenkontur zum Gegenkonus kongruent sind. Der Einsatz einer Buchse hat den Vorteil, dass in Folge der auf den Schneidzahn einwirkenden hohen Brecherkräfte auftretender Verschleiß über die Buchse "aufgefangen" werden kann, sodass dieser durch einen Austausch der Buchse eliminiert werden kann, was die Instandhaltungskosten natürlich reduziert.The conical through hole in the cutting tooth and the counter-cone of the clamping bolt are preferably formed congruent. But it is also possible to use a bush between the clamping bolt and the cutting tooth whose outer contour to the through hole and the inner contour of the counter cone are congruent. The use of a bushing has the advantage that as a result of the force acting on the cutting tooth high breaking forces occurring wear on the jack can be "collected" so that it can be eliminated by replacing the socket, which of course reduces maintenance costs.

Aus demselben Grund können vorzugsweise zwischen dem bzw. den Sitzen in dem Zahnträger und dem Fuß des Schneidzahnes Spannbleche angeordnet sein. Etwaiger Verschleiß entsteht dann durch geeignete Materialauswahl an den Spannblechen, die ebenfalls schnell und kostengünstig ausgetauscht werden können.For the same reason, clamping plates can preferably be arranged between the seat (s) in the tooth carrier and the foot of the cutting tooth. Any wear is then created by suitable choice of material on the clamping plates, which can also be replaced quickly and inexpensively.

Mit Hilfe einer Zeichnung soll ein Ausführungsbeispiel der Erfindung nachfolgend näher beschrieben werden.With the aid of a drawing, an embodiment of the invention will be described in more detail below.

Es zeigen:

Figur 1 -
die perspektivische Ansicht zweier umlaufender Schneidwellen;
Figur 2 -
eine vergrößerte Einzelheit gemäß Sichtpfeil II aus Figur 1;
Figur 3 -
eine Einzelheit aus Figur 1 in einer Explosionsdarstellung;
Figur 4 -
die Draufsicht auf den Zahnträger;
Figur 5 -
den Spannbolzen in perspektivischer Darstellung;
Figur 6 -
den Spannbolzen im Längsschnitt;
Figur 7 -
den Schneidzahn in perspektivischer Darstellung.
Show it:
FIG. 1 -
the perspective view of two rotating cutting shafts;
FIG. 2 -
an enlarged detail according to viewing arrow II FIG. 1 ;
FIG. 3 -
a detail FIG. 1 in an exploded view;
FIG. 4 -
the top view of the tooth carrier;
FIG. 5 -
the clamping bolt in perspective view;
FIG. 6 -
the clamping bolt in longitudinal section;
FIG. 7 -
the cutting tooth in perspective view.

Figur 1 zeigt zwei umlaufend angetriebene Schneidwellen 100 mit einer Mehrzahl über ihren Umfang verteilt angeordneter Schneidzähne 10, die jeweils in einem Zahnträger 20 festgeschraubt sind. Die Zahnträger 20 sind in Axialrichtung A der Schneidwelle 100 auf dieser fest angeordnet, beispielsweise verschweißt und in Umfangsrichtung der Zahnwelle 100 zueinander parallel beabstandet, wie Figur 3 zeigt. Die Zahnträger 20 bestehen aus einem quaderförmigen Grundkörper, an dem ein in Umfangsrichtung hervorstehender Anschlag 23 und ein im Querschnitt dreieckiges Leitblech 26 angebracht sind. An gegenüberliegenden Seitenkanten des Grundkörpers sind zwei prismatische Sitze 21, 24 ausgebildet, die durch zwei winklig zueinander verlaufende Flächen 21', 21"; 24', 24" ausgebildet sind. Der Anschlag 23 ist mit einer Aufnahmebohrung 22 versehen. FIG. 1 shows two circumferentially driven cutting shafts 100 having a plurality of distributed over its circumference arranged cutting teeth 10, which are each screwed in a tooth carrier 20. The toothed carrier 20 are fixedly arranged in the axial direction A of the cutting shaft 100, for example, welded and spaced parallel to each other in the circumferential direction of the toothed shaft 100, such as FIG. 3 shows. The tooth carriers 20 consist of a cuboid base body, on which a stop 23 projecting in the circumferential direction and a guide plate 26 triangular in cross-section are mounted. Two prismatic seats 21, 24 are formed on opposite side edges of the base body, which are formed by two surfaces 21 ', 21 ", 24", 24 "which run at an angle to one another. The stopper 23 is provided with a receiving bore 22.

Der Schneidzahn 10 weist einen Kopfbereich 13, einen Fuß 12 und eine an ihrem einen Ende konisch ausgebildete und an ihrem anderen Ende zylindrisch ausgebildete Durchgangsbohrung 11 auf. Der Fuß 12 ist zu seiner Hochachse H spiegelsymmetrisch prismatisch ausgebildet, wobei das Prisma durch je zwei winklig verlaufende Flächen 16', 16"; 17', 17" gebildet wird. Der Fuß 12 ist zu den Sitzen 21, 24 kongruent, das heißt die Flächen 21', 21" und 17', 17" bzw. 24', 24" und 16', 16" korrespondieren miteinander, d.h. sie sind zueinander kongruent. Im Kopf 13 ist quer zur Symmetrielinie H (in Axialrichtung A) eine Nut 14 eingebracht (vgl. Figur 7), in die der Schneidenschutz 15 eingesetzt und im Kopf 13 befestigt werden kann, vorzugsweise eingeschweißt wird (vgl. Figur 3).The cutting tooth 10 has a head portion 13, a foot 12, and a through hole 11 formed conically at one end and formed cylindrically at the other end thereof. The foot 12 is mirror-symmetrical to its vertical axis H. formed prismatic, wherein the prism by each two angularly extending surfaces 16 ', 16 ", 17', 17" is formed. The foot 12 is congruent with the seats 21, 24, that is, the surfaces 21 ', 21 "and 17', 17" and 24 ', 24 "and 16', 16" correspond to each other, that is, they are congruent with each other. A groove 14 (see FIG. 7) is introduced transversely to the line of symmetry H (in the axial direction A) into the head 13, into which the blade guard 15 can be inserted and fastened in the head 13, preferably being welded in (cf. FIG. 3 ).

Zur Befestigung des Zahnes 10 in dem Zahnträger 20 ist ein Spannbolzen 30 vorgesehen, der an einem Ende mit einem Gegenkonus 31 versehen ist und eine zentrale Bohrung 32 aufweist. Das dem Gegenkonus 31 gegenüberliegende Ende 33 ist zylindrisch ausgebildet. Zum Verspannen des Zahnes 10 im Zahnträger 20 wird der Zahn 10 in die prismatischen Sitze 21, 24 eingesetzt, der Spannbolzen 30 in die konische Durchgangsbohrung 11 eingeschoben, durch die Aufnahmebohrung 22 im Anschlag 23 hindurchgesteckt und die Schraube 50 in die zentrale Bohrung 32 eingeführt und anschließend mit der Mutter 51 verschraubt, wodurch der Spannbolzen 30 in Axialrichtung A in die konische Bohrung 11 eintaucht und der Gegenkonus 31 über die konische Bohrung 11 den Zahn 10 in Axialrichtung gegen den Anschlag 23 zieht und in den Sitzen 21, 24 fixiert. Anstelle einer Mutter 51 kann auch ein im Bereich des Endes vorgesehenes Innengewinde in der zentralen Bohrung 32 vorgesehen werden.For fixing the tooth 10 in the tooth carrier 20, a clamping bolt 30 is provided, which is provided at one end with a counter-cone 31 and has a central bore 32. The counter-cone 31 opposite end 33 is cylindrical. To clamp the tooth 10 in the tooth carrier 20, the tooth 10 is inserted into the prismatic seats 21, 24, the clamping bolt 30 inserted into the conical through hole 11, inserted through the receiving bore 22 in the stop 23 and the screw 50 inserted into the central bore 32 and then bolted to the nut 51, whereby the clamping bolt 30 dips into the conical bore 11 in the axial direction A and the counter-cone 31 pulls the tooth 10 in the axial direction against the stop 23 via the conical bore 11 and fixed in the seats 21, 24. Instead of a nut 51, an internal thread provided in the region of the end can also be provided in the central bore 32.

In die Aufnahmebohrung 22 des Anschlags 23 kann eine Buchse 40 eingesetzt sein, die aus einem weniger harten Material besteht als der Anschlag 23 und der Spannbolzen 30. Zwischen dem Fuß 12 des Zahnes 10 und den Flächen 21', 21"; 24', 24" in den Sitzen 21, 24 können Spannbleche 60 eingesetzt sein, die ebenfalls aus einem weicheren Material als der Zahn 10 und der Zahnträger 20 ausgebildet sind und dazu dienen, Verschleiß aufzufangen. Bezugszeichenliste 10 Zahn 100 Schneidwelle 11 Durchgangsbohrung A Axialrichtung 12 Fuß H Hochachse/Symmetrielinie 13 Kopf 14 Nut DF-Re/rog/ne 15 Schneidenschutz 16' Fläche 16" Fläche 17' Fläche 17" Fläche 20 Zahnträger 21 Sitz 21' Fläche 21" Fläche 22 Aufnahmebohrung 23 Anschlag 24 Sitz 24' Fläche 24" Fläche 26 Leitblech 30 Spannbolzen 31 Gegenkonus 33 Ende 32 zentrale Bohrung 40 Buchse 50 Schraube 51 Mutter 60 Blech In the receiving bore 22 of the stopper 23, a sleeve 40 may be used, which consists of a less hard material than the stopper 23 and the clamping bolt 30. Between the foot 12 of the tooth 10 and the surfaces 21 ', 21 ", 24', 24 "in the seats 21, 24 clamping plates 60 may be used, which are also made of a softer material than the tooth 10 and the tooth carrier 20 and serve to absorb wear. <B> LIST OF REFERENCES </ b> 10 tooth 100 bladeshaft 11 Through Hole A axially 12 foot H Vertical axis / symmetry line 13 head 14 groove DF-Re / rog / ne 15 cut protection 16 ' area 16 " area 17 ' area 17 " area 20 tooth carrier 21 Seat 21 ' area 21 " area 22 location hole 23 attack 24 Seat 24 ' area 24 " area 26 baffle 30 clamping bolt 31 counter-cone 33 The End 32 central hole 40 Rifle 50 screw 51 mother 60 sheet

Claims (10)

  1. Device for a comminuting apparatus, with a cutting shaft (100) on which a plurality of cutting teeth (10) are releasably fastened, a tooth support (20) which is arranged on the cutting shaft (100), has a stop (23) provided with a receiving bore (22) and is provided for receiving the cutting tooth (10), which is provided with a conical passage bore (11), and with a screw (50) projecting through the receiving bore (22), for the clamping fastening of the cutting tooth (10) in the tooth support (20) by means of a clamping bolt (30) which is provided with a central bore (32) and has a mating cone (31) interacting with the cone of the passage bore (11), wherein the clamping bolt (30) can be clamped in the passage bore (11) of the cutting tooth (10) via the screw (50) which is guided through the central bore (32), characterized by the following features:
    a) at least one first prismatically configured seat (21) is provided in the tooth support (20),
    b) on the cutting tooth (10) a root (12) is formed, the root interacting with the seat (21),
    c) during clamping of the cutting tooth (10), the root (12) is braced in the prismatic seat (21) of the tooth support (20) and against the stop (23).
  2. Device according to Claim 1, characterized in that the tooth support (20) has a second prismatic seat (24).
  3. Device according to Claim 1, characterized in that the conical passage bore (11) in the cutting tooth (10) and the mating cone (31) of the clamping bolt (30) are formed congruently.
  4. Device according to Claim 1, characterized in that a bushing is inserted between the clamping bolt (30) and the cutting tooth (10).
  5. Device according to Claim 4, characterized in that the outer circumference of the bushing with respect to the passage bore (11) and the inner circumference of the bushing with respect to the mating cone (31) are congruent
  6. Device according to one of the preceding claims, characterized in that clamping plates (60) are arranged between the seat (21, 24) in the tooth support (20) and the root (12) of the cutting tooth (10).
  7. Device according to one of the preceding claims, characterized in that a bushing (40) is inserted in the receiving bore (22) of the stop (23).
  8. Cutting shaft with a plurality of devices arranged distributed over the circumference thereof, according to one of the preceding claims.
  9. Cutting shaft according to Claim 8, characterized in that each tooth support (20) has two prismatic seats (21, 24) and in each case two tooth supports (20) are arranged offset with respect to each other in such a manner that the first prismatic seat (21) of the first tooth support (20) lies opposite the second prismatic seat (24) of the second tooth support (20).
  10. Cutting shaft according to Claim 9, characterized in that the root (12) of the cutting tooth (10) is braced in the two prismatic seats (21, 24).
EP15195666.1A 2014-11-20 2015-11-20 Device for reversibly fixing a cutting tooth Active EP3023154B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL15195666T PL3023154T3 (en) 2014-11-20 2015-11-20 Device for reversibly fixing a cutting tooth

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102014017074.8A DE102014017074B3 (en) 2014-11-20 2014-11-20 Device for releasably securing a cutting tooth

Publications (3)

Publication Number Publication Date
EP3023154A2 EP3023154A2 (en) 2016-05-25
EP3023154A3 EP3023154A3 (en) 2016-06-15
EP3023154B1 true EP3023154B1 (en) 2017-07-19

Family

ID=54695584

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15195666.1A Active EP3023154B1 (en) 2014-11-20 2015-11-20 Device for reversibly fixing a cutting tooth

Country Status (3)

Country Link
EP (1) EP3023154B1 (en)
DE (2) DE102014017074B3 (en)
PL (1) PL3023154T3 (en)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9113277U1 (en) 1991-10-25 1992-01-30 Haas, Volker, 5439 Stockum-Pueschen, De
DE9213309U1 (en) * 1992-10-03 1992-11-26 Westfalia Becorit Industrietechnik Gmbh, 4670 Luenen, De
AT6258U1 (en) * 2002-05-08 2003-07-25 Unterwurzacher Patentverwertun DEVICE FOR SHREDDING MATERIAL
DE20301354U1 (en) 2003-01-29 2004-06-09 Komptech Farwick Ges.M.B.H. comminution device
DE202005010337U1 (en) * 2004-09-16 2006-02-02 Doppstadt, Johann Cutter carrier for milling device, has cutter arranged at sprocket body in form-fit manner, and cutter retainer, into which one part of cutter is applicable, where retainer is formed as recess
DE202009005493U1 (en) * 2009-04-09 2009-06-18 Pr-Technik Gmbh Crushing knife and crushing device with such
DE202010014030U1 (en) * 2010-10-08 2012-01-09 Doppstadt Familienholding Gmbh Mallets with a cutting insert and a base body

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
PL3023154T3 (en) 2017-12-29
DE202015009410U1 (en) 2017-06-30
DE102014017074B3 (en) 2016-03-31
EP3023154A3 (en) 2016-06-15
EP3023154A2 (en) 2016-05-25

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