EP3323572B1 - Device for chipping wood - Google Patents

Device for chipping wood Download PDF

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Publication number
EP3323572B1
EP3323572B1 EP17450013.2A EP17450013A EP3323572B1 EP 3323572 B1 EP3323572 B1 EP 3323572B1 EP 17450013 A EP17450013 A EP 17450013A EP 3323572 B1 EP3323572 B1 EP 3323572B1
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EP
European Patent Office
Prior art keywords
rotor
spacers
fixed
knife
discs
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.)
Active
Application number
EP17450013.2A
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German (de)
French (fr)
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EP3323572A1 (en
Inventor
Rudolf Eschlböck
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.)
Eschlbock - Maschinenbau GmbH
Original Assignee
Eschlbock - Maschinenbau 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 Eschlbock - Maschinenbau GmbH filed Critical Eschlbock - Maschinenbau GmbH
Priority to SI201730210T priority Critical patent/SI3323572T1/en
Priority to PL17450013T priority patent/PL3323572T3/en
Publication of EP3323572A1 publication Critical patent/EP3323572A1/en
Application granted granted Critical
Publication of EP3323572B1 publication Critical patent/EP3323572B1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27L—REMOVING BARK OR VESTIGES OF BRANCHES; SPLITTING WOOD; MANUFACTURE OF VENEER, WOODEN STICKS, WOOD SHAVINGS, WOOD FIBRES OR WOOD POWDER
    • B27L11/00—Manufacture of wood shavings, chips, powder, or the like; Tools therefor
    • B27L11/02—Manufacture of wood shavings, chips, powder, or the like; Tools therefor of wood shavings or the like
    • 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
    • B02C18/144—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within horizontal containers with axially elongated knives
    • 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
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27G—ACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS; SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS
    • B27G13/00—Cutter blocks; Other rotary cutting tools
    • B27G13/005—Tools composed of two or more rotating discs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27G—ACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS; SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS
    • B27G13/00—Cutter blocks; Other rotary cutting tools
    • B27G13/08—Cutter blocks; Other rotary cutting tools in the shape of disc-like members; Wood-milling cutters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27L—REMOVING BARK OR VESTIGES OF BRANCHES; SPLITTING WOOD; MANUFACTURE OF VENEER, WOODEN STICKS, WOOD SHAVINGS, WOOD FIBRES OR WOOD POWDER
    • B27L11/00—Manufacture of wood shavings, chips, powder, or the like; Tools therefor
    • B27L11/005—Tools therefor

Definitions

  • the present invention relates to a device for cutting wood comprising a plurality of rotor disks arranged on a rotor axis of a rotor, at least one knife carrier with a knife releasably attached to each rotor disk being provided and the rotor disks on the rotor axis with intermediate storage of spacers spaced apart and attached to each other.
  • a device for cutting wood comprising a plurality of rotor disks arranged on a rotor axis of a rotor, at least one knife carrier with a knife releasably attached to each rotor disk being provided and the rotor disks on the rotor axis with intermediate storage of spacers spaced apart and attached to each other.
  • Such a device is from the DE 20 2014 009 164 U1 known
  • Such devices for cutting wood are usually essentially drum-shaped cutting devices arranged in a housing, which are arranged on an axis, which axis is in turn driven by a motor to a uniform rotation.
  • the logs or branches or other wooden parts to be shredded with such a device are fed to the device for machining via a feed device, in particular a feed device, and the knives arranged on this device on a knife carrier come into engagement with the wood material to be shredded, as a result of which the wood closes Chips or nicks are chopped or crushed, which chips are in turn discharged from the device by means of a blower.
  • Such cutting devices have been known for a long time and have already been implemented in the most varied of embodiments or with the most varied of crushing devices. So describes the EP 1 413 410 A. a device for machining wood, in which a plurality of rotor disks are arranged on a rotor axis and the knife carriers are screwed to these rotor disks in such a way that the knives are inserted in grooves between the rotor disks. With such a device, it is almost impossible to replace the knives in the event of wear or damage, or should wooden components become wedged in the knife drum or damage a part of the drum, replace or replace individual parts of the drum without long downtimes of the device in To have to buy.
  • a shredding device for wood has become known in which two diametrically opposed knife carriers are arranged on two disks arranged on a hub, which knife carriers are additionally fixed to both disks or rotor disks and define the distance between the two disks.
  • a cutting head for wood chopping machines which is essentially cylindrical.
  • Such a cutting head is formed from disk-shaped segments, which are essentially in an axially aligned Are held. On these disc-shaped segments are in scope Knife holder or knife fixed, which should come into engagement with the shredded material.
  • Knife holder or knife fixed, which should come into engagement with the shredded material.
  • EP 1362639 A1 a device for comminuting material with a comminuting rotor, which has turntables arranged in a rotationally fixed manner on a drive shaft, which have pointed cutting teeth, the cutting teeth being arranged in circumferential recesses of the carrier disks.
  • Such a device is intended to achieve interlocking cutting marks during the cutting of wood, which is to be achieved by keeping the distance between two successive carrier disks as small as possible.
  • the present invention now aims to provide a device for machining wood, with which it is possible to minimize downtimes as a result of damage or relocation of the device as far as possible and which also has a simple structure in which all Parts of the device are easily accessible and replaceable for maintenance personnel.
  • the device according to the invention is essentially characterized in that in each case a releasably fixed spacer is provided between two rotor disks releasably fixed on the rotor axis, that each spacer is arranged as a substantially tubular element with in its two end regions over a tube diameter extending fastening flanges and that at least the rotor disks are fixed to the rotor axis by means of clamping elements.
  • each spacer is designed as an essentially tubular element with fastening flanges arranged in its two end regions and extending over a tube diameter makes it possible to connect the individual rotor disks via the spacers and thus to form a defined structured device for machining.
  • the spacers as essentially tubular elements the rotor axis is tightly enclosed, so that the penetration of wood chips, branches and the like into the interior between the rotor axis and the spacer or the interior between the rotor axis and rotor disks is reliably prevented, so that accidental damage and contamination of the rotor axis by wooden parts Security is neglected.
  • the rotor disks can be releasably attached to the axis of rotation, which is both immovable and unsolvable in the case of the loads occurring during operation, without the need to fix individual elements of the device for machining on the Axis, with means penetrating the axis, for example, which would mean weakening them, would be required. Since all the elements are detachably connected to one another, the device for cutting and replacing damaged or worn parts can be easily disassembled without, for example, welding seams having to be cut open or new elements having to be welded in. By loosening screws and nuts or tightening them, for example, all elements of the machining device can be removed, serviced, replaced and reinstalled.
  • the device is designed such that both the rotor disks and the spacers are fixed on the rotor axis by means of clamping elements, a further safeguard against displacement or rotation of the elements fixed on a rotor axis, namely the Rotor disks and the spacer guaranteed.
  • the spacers at a defined distance from the rotor axis, so that even if indentation of spacer elements, for example due to a penetrating stem, impairment of the axis of rotation and in particular grinding of parts of the device on the axis of rotation also occur Security is neglected.
  • the device is designed such that each spacer is fixed to the rotor axis in an end region by means of clamping elements.
  • each spacer is formed with increased material thickness in at least one of its end regions, it is ensured that a sufficiently stable counter bearing is provided for the clamping elements provided in this region.
  • the spacer element can be designed in such a way that the area of increased material thickness on the adjacent rotor disk is fixed by wedging or clamping and screwing is not required in this area.
  • the device for machining is designed so that the clamping elements are selected from clamping sets or friction bushes, conventional conventional clamping elements can be used to fix both the spacer elements and the rotor disks on the axis of rotation, so that the technical outlay for producing the device for machining can be optimized and, moreover, a stable and less susceptible to failure solution can be provided.
  • the device In order to reliably prevent any ingress of contaminants, in particular wood chips or branches, in the area of the outermost rotor disks, the device is developed in such a way that each rotor disk arranged at the end on the rotor axis by means of a detachably attached to the rotor disk and the rotor axis essentially without Game-encompassing cover plate is provided.
  • the fact that the cover disks are arranged around the rotor axis essentially without play ensures that the entry of dust, moisture and the like into the interior between the rotor axis of rotation and the spacer is also reliably prevented, as a result of which the service life of the device can be increased. Furthermore, when individual elements are exchanged, it is ensured that, for example, screws cannot be loosened due to contamination or that clamping elements cannot be loosened.
  • each rotor disk is provided with two knife carriers which are releasably attached to it at a distance of 180 °.
  • a plurality of knife carriers can also be fixed to each rotor disk, it always having to be ensured that the knife carriers are arranged uniformly spaced from one another on the circumference of the rotor disks.
  • the device is designed such that at least two rotor disks are fixed on the rotor axis and that the knife carriers on adjacent rotor disks are offset from one another.
  • the procedure is preferably such that the knife carriers of adjacent rotor disks attached to the rotor disks are always arranged offset from one another and that as many knife carriers as possible are arranged over the length of the device for machining in order to be as possible as possible To be able to provide efficient and rapid cutting of wood to be shredded or branches or trunks.
  • each rotor disk has a recess, in particular a sack-shaped recess, in its area leading to the knife holder.
  • a sack-shaped recess which leads to the knife carrier, ensures that the chips formed are transported away safely and quickly, so that laying or an undesired accumulation of chips in the area of the knives is reliably prevented.
  • the device is designed such that all the elements forming the device for machining are detachable, in particular screwed together and / or clamped together, a device for machining is created in which all elements, including Knives, knife carriers, spacer elements, rotor disks as well as cover elements are releasably connected to one another, in particular are screwed together, which makes extremely simple replacement of individual worn or damaged elements possible is guaranteed.
  • individual rotor disks can additionally be attached to the rotor axis or individual rotor disks and spacers can be removed from the rotor axis if the device has to be adapted or adapted in accordance with existing requirements. All of this work is accomplished in the device according to the invention without welding, cutting or the like having to be carried out, only by loosening detachable connections, such as screws, clamping jaws and the like.
  • the device for machining with spacers, which are arranged in the immediate vicinity of the rotor axis and the individual, clearly spaced rotor disks, it is ensured that an easily constructed device is made available, from which essentially all elements are easily accessible and are therefore easy to replace or maintain. Furthermore, the risk of jamming of wood in the device is significantly reduced by such a construction. Such a device makes it possible to significantly reduce the downtimes when cutting wood, in particular tree trunks or large branches.
  • FIG. 1 Show in these Fig. 1 a section through a device for cutting wood according to the invention and Fig. 2 a partial perspective view through the device of Fig. 1 ,
  • Fig. 1 is a section through the knife drum 1 of a device for cutting wood, in particular tree trunks and / or branches shown and in Fig. 2 a perspective view of the same section is shown.
  • a plurality of rotor disks 3 are detachably fixed on a rotor axis 2.
  • the rotor disks 3 are fixed here by means of clamping elements 4, which are formed from clamping jaws in the embodiment shown.
  • clamping elements 4 which are formed from clamping jaws in the embodiment shown.
  • a spacer 5 is fixed between each two rotor disks 3.
  • the spacers 5 are in this case designed as essentially tubular elements which are provided with fastening flanges 6 at their end regions facing the rotor disks 3 in order to achieve a releasable fixing, in the present case one To enable screwing by means of screws 7 and nuts 8, between the rotor disks 3 and the spacers 5.
  • the fastening flanges 6 are designed in such a way that they clearly protrude beyond the tube diameter of the spacers 5 in order to enable a secure fixing and in particular an arrangement of a sufficient number of fastening elements (7, 8).
  • they are also fixed on at least one end region by clamping elements 4 on the rotor axis 2.
  • the spacers in this end region 9 are formed with a greater material thickness.
  • a cover disk 10 is provided on each terminal rotor disk 3 in order in particular to prevent contaminants from penetrating into the intermediate space between the rotor axis 2 and the spacers 5.
  • the cover disk 10 is designed such that it encompasses the rotor axis 2 essentially without play and is secured to the adjacent rotor disk 3 by means of releasable fixing elements, such as screws 7 and nuts 8.
  • the rotor disks 3 have a significantly larger radial extension in comparison to the spacers 5 and each rotor disk 3 has at least one sack-like recess 12 in the region of its outer circumference 11.
  • the sack-like recess 12 is arranged such that it leads a knife carrier 13 in the direction of rotation of the device.
  • the knife carriers, as well as knives 14 releasably attached to them, and wear disks 15 arranged to protect knives 14 and knife carriers 13 are designed in a manner known per se, these elements of the device also being detachably attached to the rotor disks 3, in particular by means of screws 7 and nuts 8 are set.
  • two knife carriers 13 are releasably attached to each rotor disk 3, the knife carriers being offset by 180 ° in the presence of two knife carriers 13 on a rotor disk. If more than two knife carriers 13 are provided on a rotor disk, these are to be arranged evenly spaced around the circumference 11 of the rotor disk 3. In order, in particular, to prevent an uneven load on the device during operation, the knife carriers 13 of adjacent rotor disks are further offset from one another, preferably arranged so that they are arranged as evenly as possible over the entire circumference 11 of all rotor disks 3.
  • each element can be easily serviced and repaired and, moreover, the device can, if necessary, be added by adding further spacers 5 and rotor disks 3 or removal of these elements can be adapted to existing operating requirements.

Description

Die vorliegende Erfindung bezieht sich auf eine Vorrichtung zum Zerspanen von Holz umfassend eine Mehrzahl von auf einer Rotorachse eines Rotors angeordneten Rotorscheiben, wobei an jeder Rotorscheibe wenigstens ein Messerträger mit einem lösbar daran festgelegten Messer vorgesehen ist und wobei die Rotorscheiben auf der Rotorachse unter Zwischenlagerung von Abstandhaltern in Abstand voneinander angeordnet und aneinander befestigt sind. Eine solche Vorrichtung ist aus der DE 20 2014 009 164 U1 bekanntThe present invention relates to a device for cutting wood comprising a plurality of rotor disks arranged on a rotor axis of a rotor, at least one knife carrier with a knife releasably attached to each rotor disk being provided and the rotor disks on the rotor axis with intermediate storage of spacers spaced apart and attached to each other. Such a device is from the DE 20 2014 009 164 U1 known

Derartige Vorrichtungen zum Zerspanen von Holz sind üblicherweise im wesentlichen trommelförmige, in einem Gehäuse angeordnete Schneideinrichtungen, welche auf einer Achse angeordnet sind, welche Achse wiederum über einen Motor zu einer gleichmäßigen Rotation angetrieben ist. Die mit einer derartigen Vorrichtung zu zerkleinernden Stämme bzw. Äste oder sonstigen Holzteile werden über eine Zufuhreinrichtung, insbesondere eine Vorschubeinrichtung der Vorrichtung zum Zerspanen zugeführt und die auf dieser Vorrichtung an einem Messerträger angeordneten Messer gelangen mit dem zu zerkleinernden Holzmaterial im Eingriff, wodurch das Holz zu Spänen oder Scharten zerhackt bzw. zerkleinert wird, welche Späne wiederum mittels eines Gebläses aus der Vorrichtung ausgetragen werden.Such devices for cutting wood are usually essentially drum-shaped cutting devices arranged in a housing, which are arranged on an axis, which axis is in turn driven by a motor to a uniform rotation. The logs or branches or other wooden parts to be shredded with such a device are fed to the device for machining via a feed device, in particular a feed device, and the knives arranged on this device on a knife carrier come into engagement with the wood material to be shredded, as a result of which the wood closes Chips or nicks are chopped or crushed, which chips are in turn discharged from the device by means of a blower.

Derartige Zerspanungseinrichtungen sind seit langer Zeit bekannt und sind in den unterschiedlichsten Ausführungsformen bzw. mit den unterschiedlichsten Zerkleinerungseinrichtungen bereits verwirklicht worden. So beschreibt die EP 1 413 410 A eine Vorrichtung zum Zerspanen von Holz, in welcher auf einer Rotorachse eine Mehrzahl von Rotorscheiben angeordnet sind und die Messerträger mit diesen Rotorscheiben derart verschraubt sind, dass die Messer in Nuten zwischen den Rotorscheiben eingesetzt sind. Bei einer derartigen Vorrichtung ist es nahezu unmöglich, die Messer bei einem Verschleiß oder nach einer Beschädigung auszutauschen oder aber, sollten sich in der Messertrommel Holzbestandteile verkeilen oder einen Teil der Trommel beschädigen, Einzelteile der Trommel zu ersetzen bzw. auszutauschen ohne lange Stillstandzeiten der Vorrichtung in Kauf nehmen zu müssen.Such cutting devices have been known for a long time and have already been implemented in the most varied of embodiments or with the most varied of crushing devices. So describes the EP 1 413 410 A. a device for machining wood, in which a plurality of rotor disks are arranged on a rotor axis and the knife carriers are screwed to these rotor disks in such a way that the knives are inserted in grooves between the rotor disks. With such a device, it is almost impossible to replace the knives in the event of wear or damage, or should wooden components become wedged in the knife drum or damage a part of the drum, replace or replace individual parts of the drum without long downtimes of the device in To have to buy.

Aus der FR 974 153 ist eine Zerkleinerungsvorrichtung für Holz bekannt geworden, bei welcher an zwei auf einer Nabe angeordneten Scheiben zwei einander diametral gegenüberliegende Messerträger angeordnet sind, welche Messerträger zusätzlich an beiden Scheiben bzw. Rotorscheiben festgelegt sind und den Abstand der beiden Scheiben voneinander definieren.From the FR 974 153 A shredding device for wood has become known in which two diametrically opposed knife carriers are arranged on two disks arranged on a hub, which knife carriers are additionally fixed to both disks or rotor disks and define the distance between the two disks.

Aus der DE 196 00 806 A1 ist ein Schneidkopf für Holzhackmaschinen bekannt geworden, welcher im Wesentlichen zylindrisch ausgebildet ist. Ein derartiger Schneidkopf ist aus scheibenförmigen Segmenten gebildet, die im Wesentlichen in einer axial ausgerichteten Position gehalten sind. Auf diesen scheibenförmigen Segmenten sind im Umfang Messerhalter bzw. Messer festgelegt, welche mit dem zerkleinerten Material in Eingriff gelangen sollen. Bei der Ausbildung der DE 196 00 806 A1 wird insbesondere darauf abgezielt, einen möglichst kompakten, so geringe bzw. kleine Spalten wie möglich, aufweisenden zylindrischen Körper zur Verfügung zu stellen, um ein Verlegen bzw. Beschädigen des Inneren des Schneidkopfes hintanhalten zu können.From the DE 196 00 806 A1 a cutting head for wood chopping machines has become known, which is essentially cylindrical. Such a cutting head is formed from disk-shaped segments, which are essentially in an axially aligned Are held. On these disc-shaped segments are in scope Knife holder or knife fixed, which should come into engagement with the shredded material. When training the DE 196 00 806 A1 In particular, the aim is to provide a cylindrical body which is as compact as possible and has as small or small gaps as possible in order to prevent the interior of the cutting head from being moved or damaged.

Schließlich beschreibt die EP 1362639 A1 eine Vorrichtung zum Zerkleinern von Material mit einem Zerkleinerungsrotor, der an einer Antriebswelle drehfest angeordnete Drehscheiben aufweist, die spitz hochstehende Schneidzähne aufweisen, wobei die Schneidzähne in Umfangsausnehmungen der Trägerscheiben angeordnet sind. Mit einer derartigen Vorrichtung sollen ineinander greifende Schneidspuren während des Zerspanens von Holz erzielt werden, was dadurch erreicht werden soll, dass der Abstand zweier aufeinanderfolgender Trägerscheiben so gering wie möglich gehalten wird.Finally describes the EP 1362639 A1 a device for comminuting material with a comminuting rotor, which has turntables arranged in a rotationally fixed manner on a drive shaft, which have pointed cutting teeth, the cutting teeth being arranged in circumferential recesses of the carrier disks. Such a device is intended to achieve interlocking cutting marks during the cutting of wood, which is to be achieved by keeping the distance between two successive carrier disks as small as possible.

Die vorliegende Erfindung zielt nun darauf ab, eine Vorrichtung zum Zerspanen von Holz zur Verfügung zu stellen, mit welcher es gelingt, Stillstandzeiten in Folge von Beschädigungen bzw. Verlegen der Vorrichtung soweit als möglich zu minimieren und welche überdies einen einfachen Aufbau aufweist, bei welchem sämtliche Teile der Vorrichtung für Wartungspersonal einfach zugänglich und austauschbar angeordnet sind.The present invention now aims to provide a device for machining wood, with which it is possible to minimize downtimes as a result of damage or relocation of the device as far as possible and which also has a simple structure in which all Parts of the device are easily accessible and replaceable for maintenance personnel.

Zur Lösung dieser Aufgabe ist die erfindungsgemäße Vorrichtung im Wesentlichen dadurch gekennzeichnet, dass jeweils ein lösbar festgelegter Abstandhalter zwischen zwei lösbar an der Rotorachse festgelegten Rotorscheiben vorgesehen ist, dass jeder Abstandhalter als ein im Wesentlichen rohrförmiges Element mit in seinen beiden Endbereichen angeordneten, sich über einen Rohrdurchmesser erstreckenden Befestigungsflanschen ausgebildet ist und dass wenigstens die Rotorscheiben mittels Klemmelementen an der Rotorachse festgelegt sind. Indem jeweils ein lösbar festgelegter Abstandhalter zwischen zwei lösbar an der Rotorachse festgelegten Rotorscheiben vorgesehen ist, wird gewährleistet, dass die Einzelteile, welche den Grundkörper der Vorrichtung zum Zerspanen von Holz ausbilden, leicht voneinander getrennt werden können und jeder Einzelteil im Bedarfsfall ausgetauscht bzw. gewartet oder ersetzt werden kann. Dadurch, dass jeder Abstandhalter als ein im Wesentlichen rohrförmiges Element mit in seinen beiden Endbereichen angeordneten, sich über einen Rohrdurchmesser erstreckenden Befestigungsflanschen ausgebildet ist, gelingt es, die einzelnen Rotorscheiben über die Abstandhalter zu verbinden und so eine definiert strukturierte Vorrichtung zum Zerspanen auszubilden. Weiterhin, indem die Abstandhalter als im Wesentlichen rohrförmige Elemente ausgebildet sind, wird die Rotorachse dicht umschlossen, so dass das Eindringen von Holzspänen, Ästen und dergleichen in den Innenraum zwischen Rotorachse und Abstandhalter bzw. den Innenraum zwischen Rotorachse und Rotorscheiben mit Sicherheit hintangehalten wird, so dass ein unbeabsichtigtes Beschädigen und Verunreinigen der Rotorachse durch Holzteile mit Sicherheit hintangehalten ist. Indem weiterhin wenigstens die Rotorscheiben mittels Klemmelementen an der Rotorachse festgelegt sind, gelingt eine lösbare Festlegung der Rotorscheiben an der Drehachse, welche sowohl unverschiebbar als auch bei den im Betrieb auftretenden Belastungen unlösbar ist, ohne dass ein Festlegen von einzelnen Elementen der Vorrichtung zum Zerspanen an der Achse, mit beispielsweise die Achse durchdringenden Mitteln, was eine Schwächung derselben bedeuten würde, erforderlich wäre. Indem weiterhin sämtliche Elemente lösbar miteinander verbunden sind, gelingt ein einfaches Zerlegen der Vorrichtung zum Zerspanen und Austauschen von beispielsweise beschädigten oder abgenutzten Teilen, ohne dass beispielweise Schweißnähte aufgeschnitten werden müssen oder neue Elemente eingeschweißt werden müssen. Durch Lösen von beispielsweise Schrauben und Muttern bzw. Anziehen derselben können sämtliche Elemente der Vorrichtung zum Zerspanen ausgebaut, gewartet, ausgetauscht und wieder eingebaut werden.To achieve this object, the device according to the invention is essentially characterized in that in each case a releasably fixed spacer is provided between two rotor disks releasably fixed on the rotor axis, that each spacer is arranged as a substantially tubular element with in its two end regions over a tube diameter extending fastening flanges and that at least the rotor disks are fixed to the rotor axis by means of clamping elements. By providing a releasably fixed spacer between two releasably fixed rotor disks on the rotor axis, it is ensured that the individual parts which form the base body of the device for machining wood can be easily separated from one another and each individual part can be exchanged or serviced if necessary or can be replaced. The fact that each spacer is designed as an essentially tubular element with fastening flanges arranged in its two end regions and extending over a tube diameter makes it possible to connect the individual rotor disks via the spacers and thus to form a defined structured device for machining. Furthermore, by designing the spacers as essentially tubular elements the rotor axis is tightly enclosed, so that the penetration of wood chips, branches and the like into the interior between the rotor axis and the spacer or the interior between the rotor axis and rotor disks is reliably prevented, so that accidental damage and contamination of the rotor axis by wooden parts Security is neglected. By further fixing at least the rotor disks to the rotor axis by means of clamping elements, the rotor disks can be releasably attached to the axis of rotation, which is both immovable and unsolvable in the case of the loads occurring during operation, without the need to fix individual elements of the device for machining on the Axis, with means penetrating the axis, for example, which would mean weakening them, would be required. Since all the elements are detachably connected to one another, the device for cutting and replacing damaged or worn parts can be easily disassembled without, for example, welding seams having to be cut open or new elements having to be welded in. By loosening screws and nuts or tightening them, for example, all elements of the machining device can be removed, serviced, replaced and reinstalled.

Indem, wie dies einer Weiterbildung der Erfindung entspricht, die Vorrichtung so ausgebildet ist, dass sowohl die Rotorscheiben als auch die Abstandhalter mittels Klemmelementen an der Rotorachse festgelegt sind, wird eine weitere Sicherung gegen Verschieben bzw. Verdrehen der auf einer Rotorachse festgelegten Elemente, nämlich der Rotorscheiben sowie der Abstandhalter, gewährleistet. Schließlich gelingt es mit einer derartigen Ausbildung die Abstandhalter in einem definierten Abstand von der Rotorachse zu halten, so dass selbst bei einem Eindellen von Abstandhalterelementen, beispielsweise durch einen eindringenden Stamm, eine Beeinträchtigung der Drehachse und insbesondere ein Schleifen von Teilen der Vorrichtung auf der Drehachse mit Sicherheit hintangehalten ist.By, as this corresponds to a development of the invention, the device is designed such that both the rotor disks and the spacers are fixed on the rotor axis by means of clamping elements, a further safeguard against displacement or rotation of the elements fixed on a rotor axis, namely the Rotor disks and the spacer guaranteed. Finally, with such a design it is possible to keep the spacers at a defined distance from the rotor axis, so that even if indentation of spacer elements, for example due to a penetrating stem, impairment of the axis of rotation and in particular grinding of parts of the device on the axis of rotation also occur Security is neglected.

Gemäß einer Weiterbildung der Erfindung ist die Vorrichtung so ausgebildet, dass jeder Abstandhalter in einem Endbereich mittels Klemmelementen an der Rotorachse festgelegt ist. Indem jeder Abstandhalter in einem seiner Endbereiche mittels Klemmelementen an der Rotorachse festgelegt ist, gelingt es, eine kostengünstige und effiziente Ausbildung der Vorrichtung zum Zerspanen zur Verfügung zu stellen, welche gleichzeitig einen definierten Abstand der Abstandhalter zur Rotorachse sicherstellt. Durch ein einseitiges Festlegen des Abstandhalters an der Rotordrehachse mit Klemmelementen wird überdies eine ausreichende Abstützung der Abstandhalter erreicht, so dass ein unnötiger, apparativer und arbeitsmäßiger Aufwand vermieden werden kann.According to a development of the invention, the device is designed such that each spacer is fixed to the rotor axis in an end region by means of clamping elements. By fixing each spacer in one of its end regions to the rotor axis by means of clamping elements, it is possible to provide a cost-effective and efficient design of the device for machining, which at the same time ensures a defined distance between the spacers and the rotor axis. By one-sided fixing of the spacer on the rotor axis of rotation with clamping elements is also a sufficient support for the spacers is achieved, so that unnecessary, equipment-related and labor-intensive work can be avoided.

Indem die Vorrichtung so ausgebildet ist, wie dies einer Weiterbildung der Erfindung entspricht, dass jeder Abstandhalter in wenigstens einem seiner Endbereichen mit vergrößerter Materialstärke ausgebildet ist, wird gewährleistet, dass ein ausreichend stabiles Gegenlager für die in diesem Bereich vorgesehenen Klemmelemente zur Verfügung gestellt wird. Schließlich kann mit einer derartigen Ausbildung beispielsweise das Abstandhalterelement so ausgebildet sein, dass der Bereich vergrößerter Materialstärke an der benachbarten Rotorscheibe durch Verkeilen oder Klemmen festgelegt ist und in diesem Bereich eine Verschraubung nicht erforderlich ist.By designing the device in such a way that it corresponds to a development of the invention that each spacer is formed with increased material thickness in at least one of its end regions, it is ensured that a sufficiently stable counter bearing is provided for the clamping elements provided in this region. Finally, with such a configuration, for example, the spacer element can be designed in such a way that the area of increased material thickness on the adjacent rotor disk is fixed by wedging or clamping and screwing is not required in this area.

Indem, wie es einer Weiterbildung der Vorrichtung zur Zerspanen entspricht, die Vorrichtung so ausgebildet ist, dass die Klemmelemente aus Spannsätzen oder Reibbuchsen gewählt sind, können übliche herkömmliche Klemmelemente zur Festlegung von sowohl den Abstandhalterelementen als auch der Rotorscheiben an der Drehachse eingesetzt werden, so dass der technische Aufwand zur Herstellung der Vorrichtung zum Zerspanen optimiert werden kann und überdies eine stabile und wenig störanfällige Lösung zur Verfügung gestellt werden kann.Since, according to a further development of the device for machining, the device is designed so that the clamping elements are selected from clamping sets or friction bushes, conventional conventional clamping elements can be used to fix both the spacer elements and the rotor disks on the axis of rotation, so that the technical outlay for producing the device for machining can be optimized and, moreover, a stable and less susceptible to failure solution can be provided.

Um auch jegliches Eindringen von Verunreinigungen, insbesondere Holzspänen oder Ästen, im Bereich der äußersten angeordneten Rotorscheiben, mit Sicherheit hintanzuhalten, ist die Vorrichtung derart weitergebildet, dass jede endständig auf der Rotorachse angeordnete Rotorscheibe mittels einer lösbar an der Rotorscheibe festgelegten und die Rotorachse im Wesentlichen ohne Spiel umgreifenden Abdeckscheibe versehen ist. Indem die Abdeckscheiben im Wesentlichen ohne Spiel die Rotorachse umgreifend angeordnet sind, wird sichergestellt, dass auch das Eintreten von Staub, Feuchtigkeit und dergleichen in den Innenraum zwischen Rotordrehachse und Abstandhalter mit Sicherheit hintangehalten wird, wodurch die Standzeit der Vorrichtung erhöht werden kann. Weiterhin ist bei Austausch von einzelnen Elementen sichergestellt, dass nicht aufgrund von Verschmutzungen beispielsweise Schrauben nicht gelöst werden können oder Klemmelemente nicht gelockert werden können.In order to reliably prevent any ingress of contaminants, in particular wood chips or branches, in the area of the outermost rotor disks, the device is developed in such a way that each rotor disk arranged at the end on the rotor axis by means of a detachably attached to the rotor disk and the rotor axis essentially without Game-encompassing cover plate is provided. The fact that the cover disks are arranged around the rotor axis essentially without play ensures that the entry of dust, moisture and the like into the interior between the rotor axis of rotation and the spacer is also reliably prevented, as a result of which the service life of the device can be increased. Furthermore, when individual elements are exchanged, it is ensured that, for example, screws cannot be loosened due to contamination or that clamping elements cannot be loosened.

Um eine gleichmäßige Drehung und insbesondere eine einseitige Belastung der Rotorscheiben und somit einen vorzeitigen Verschleiß der gesamten Vorrichtung mit Sicherheit hintanzuhalten, ist, wie dies an sich bekannt ist, die Vorrichtung dahingehend weitergebildet, dass jede Rotorscheibe mit zwei im Abstand von 180° daran lösbar festgelegten Messerträgern versehen ist. Es erübrigt sich, in diesem Zusammenhang festzuhalten, dass auch eine Mehrzahl von Messerträgern an jeder Rotorscheibe festgelegt sein kann, wobei immer sichergestellt werden muss, dass die Messerträger gleichmäßig voneinander beabstandet am Umfang der Rotorscheiben angeordnet sind.In order to reliably prevent even rotation and in particular one-sided loading of the rotor disks and thus premature wear of the entire device, the device is, as is known per se, further developed in such a way that that each rotor disk is provided with two knife carriers which are releasably attached to it at a distance of 180 °. In this context, it is unnecessary to state that a plurality of knife carriers can also be fixed to each rotor disk, it always having to be ensured that the knife carriers are arranged uniformly spaced from one another on the circumference of the rotor disks.

Gemäß einer Weiterbildung der Erfindung ist die Vorrichtung so ausgebildet, dass wenigstens zwei Rotorscheiben auf der Rotorachse festgelegt sind und dass die Messerträger an benachbarten Rotorscheiben versetzt zueinander angeordnet sind. Indem wenigstens zwei Rotorscheiben auf der Rotorachse festgelegt sind und die Messerträger der benachbarten Rotorscheiben versetzt zueinander angeordnet sind, wird sichergestellt, dass im Betrieb, d.h. bei drehender Achse, eine ungleiche Belastung derselben durch ein einseitiges Anordnen von Messerträgen mit Sicherheit hintangehalten ist. Bei Vorsehen von einer Mehrzahl von Rotorscheiben wird vorzugsweise so vorgegangen, dass die an den Rotorscheiben festgelegten Messerträger benachbarter Rotorscheiben immer versetzt zueinander angeordnet sind und dass über die Länge der Vorrichtung zum Zerspanen möglichst viele Messerträger über den Umfang der Rotorscheiben verteilt angeordnet sind, um ein möglichst effizientes und rasches Zerspanen von zu zerkleinerndem Holz bzw. Ästen oder Stämmen zur Verfügung stellen zu können.According to a development of the invention, the device is designed such that at least two rotor disks are fixed on the rotor axis and that the knife carriers on adjacent rotor disks are offset from one another. By fixing at least two rotor disks on the rotor axis and arranging the knife carriers of the adjacent rotor disks offset from one another, it is ensured that during operation, i.e. when the axis is rotating, an unequal loading of the same is surely prevented by arranging knife yields on one side. If a plurality of rotor disks are provided, the procedure is preferably such that the knife carriers of adjacent rotor disks attached to the rotor disks are always arranged offset from one another and that as many knife carriers as possible are arranged over the length of the device for machining in order to be as possible as possible To be able to provide efficient and rapid cutting of wood to be shredded or branches or trunks.

Um ein Verlegen, insbesondere ein unerwünschtes Ansammeln von Spänen im Bereich der Messer mit Sicherheit hintanzuhalten, sind die Rotorscheiben im Wesentlichen dahingehend weitergebildet, dass jede Rotorscheibe in ihrem dem Messerträger vorlaufendem Bereich eine Ausnehmung, insbesondere eine sackförmige Ausnehmung, aufweist. Durch das Vorsehen einer sackförmigen Ausnehmung, welche dem Messerträger vorläuft, wird ein sicherer und rascher Abtransport von gebildeten Spänen gewährleiset, so dass ein Verlegen bzw. eine unerwünschte Ansammlung von Spänen im Bereich der Messer mit Sicherheit hintangehalten ist.In order to reliably prevent laying, in particular undesired accumulation of chips in the area of the knives, the rotor disks are essentially developed in such a way that each rotor disk has a recess, in particular a sack-shaped recess, in its area leading to the knife holder. The provision of a sack-shaped recess, which leads to the knife carrier, ensures that the chips formed are transported away safely and quickly, so that laying or an undesired accumulation of chips in the area of the knives is reliably prevented.

Indem, wie dies einer Weiterbildung der Erfindung entspricht, die Vorrichtung so ausgebildet ist, dass sämtliche die Vorrichtung zum Zerspanen ausbildenden Elemente lösbar, insbesondere miteinander verschraubt und/oder miteinander verklemmt festgelegt sind, wird eine Vorrichtung zum Zerspanen geschaffen, bei welcher sämtliche Elemente, inklusive Messer, Messerträger, Abstandhalterelemente, Rotorscheiben ebenso wie Abdeckelemente miteinander lösbar verbunden sind, insbesondere verschraubt sind, wodurch ein extrem einfaches Austauschen von einzelnen verschlissenen bzw. beschädigten Elementen gewährleistet ist. Darüber hinaus können im Bedarfsfall beispielsweise einzelne Rotorscheiben zusätzlich auf die Rotorachse aufgesteckt werden bzw. auch einzelne Rotorscheiben sowie Abstandhalter von der Rotorachse entfernt werden, wenn entsprechend bestehender Erfordernisse die Vorrichtung adaptiert bzw. angepasst werden muss. Alle diese Arbeiten gelingen bei der Vorrichtung gemäß der Erfindung ohne dass Schweißarbeiten, Schneidarbeiten oder dergleichen vorgenommen werden müssen, lediglich durch Lösen von lösbaren Verbindungen, wie Schrauben, Klemmbacken und dergleichen.By, as this corresponds to a further development of the invention, the device is designed such that all the elements forming the device for machining are detachable, in particular screwed together and / or clamped together, a device for machining is created in which all elements, including Knives, knife carriers, spacer elements, rotor disks as well as cover elements are releasably connected to one another, in particular are screwed together, which makes extremely simple replacement of individual worn or damaged elements possible is guaranteed. In addition, if necessary, for example, individual rotor disks can additionally be attached to the rotor axis or individual rotor disks and spacers can be removed from the rotor axis if the device has to be adapted or adapted in accordance with existing requirements. All of this work is accomplished in the device according to the invention without welding, cutting or the like having to be carried out, only by loosening detachable connections, such as screws, clamping jaws and the like.

Schließlich ist durch die Ausbildung der Vorrichtung zum Zerspanen mit Abstandhaltern, welche in unmittelbarer Nachbarschaft zur Rotorachse angeordnet sind sowie den einzelnen, deutlich voneinander beabstandeten Rotorscheiben sichergestellt, dass eine leicht bauende Vorrichtung zur Verfügung gestellt wird, von welcher im Wesentlichen sämtliche Elemente leicht zugängig sind und somit leicht austauschbar bzw. wartbar sind. Weiterhin wird durch eine derartige Bauweise die Gefahr eines Verklemmens von Holz in der Vorrichtung deutlich herabgesetzt. Durch eine derartige Vorrichtung gelingt es, die Stillstandzeiten beim Zerspanen von Holz, insbesondere Baumstämmen oder großen Ästen, deutlich herabzusetzen.Finally, by designing the device for machining with spacers, which are arranged in the immediate vicinity of the rotor axis and the individual, clearly spaced rotor disks, it is ensured that an easily constructed device is made available, from which essentially all elements are easily accessible and are therefore easy to replace or maintain. Furthermore, the risk of jamming of wood in the device is significantly reduced by such a construction. Such a device makes it possible to significantly reduce the downtimes when cutting wood, in particular tree trunks or large branches.

Die Erfindung wird nachfolgend anhand von in der Zeichnung dargestellten Ausführungsbeispielen näher erläutert.The invention is explained in more detail below with reference to exemplary embodiments shown in the drawing.

In diesen zeigen Fig. 1 einen Schnitt durch eine Vorrichtung zum Zerspanen von Holz gemäß der Erfindung und Fig. 2 eine perspektivische Teilansicht durch die Vorrichtung von Fig. 1.Show in these Fig. 1 a section through a device for cutting wood according to the invention and Fig. 2 a partial perspective view through the device of Fig. 1 ,

In Fig. 1 ist ein Schnitt durch die Messertrommel 1 einer Vorrichtung zum Zerspanen von Holz, insbesondere von Baumstämmen und/oder Ästen gezeigt und in Fig. 2 ist eine perspektivische Ansicht desselben Schnittes dargestellt. Hierbei ist auf einer Rotorachse 2 eine Mehrzahl von Rotorscheiben 3 lösbar festgelegt. Die Festlegung der Rotorscheiben 3 erfolgt hierbei mittels Klemmelementen 4, die in der gezeigten Ausführungsform aus Spannbacken gebildet sind. Um die Rotorscheiben 3 in ihrer auf der Rotorachse 2 festgelegten Position zu halten und insbesondere ein Verschieben derselben entlang der Rotorachse 2 hintanzuhalten, ist zwischen zwei Rotorscheiben 3 jeweils ein Abstandhalter 5 festgelegt. Die Abstandhalter 5 sind hierbei als im Wesentlichen rohrförmige Elemente ausgebildet, die an ihren zu den Rotorscheiben 3 gewandten Endbereichen mit Befestigungsflanschen 6 versehen sind, um eine lösbare Festlegung, im vorliegenden Fall eine Verschraubung mittels Schrauben 7 und Muttern 8, zwischen den Rotorscheiben 3 und den Abstandhaltern 5 zu ermöglichen. Die Befestigungsflansche 6 sind hierbei so ausgebildet, dass sie den Rohrdurchmesser der Abstandhalter 5 deutlich überragen, um eine sichere Festlegung und insbesondere eine Anordnung einer ausreichenden Anzahl von Befestigungselementen (7, 8) zu ermöglichen. Um auch die Abstandhalter 5 an der Rotorachse 2 gegen ein Verschieben zu sichern, sind diese an wenigstens einem Endbereich ebenfalls durch Klemmelemente 4 an der Rotorachse 2 festgelegt. Um ein Verziehen oder eine sonstige Beschädigung der Abstandhalter 5 im Bereich der Festlegung der Klemmelemente 4 hintanzuhalten, sind die Abstandhalter in diesem Endbereich 9 mit einer größeren Materialstärke ausgebildet.In Fig. 1 is a section through the knife drum 1 of a device for cutting wood, in particular tree trunks and / or branches shown and in Fig. 2 a perspective view of the same section is shown. Here, a plurality of rotor disks 3 are detachably fixed on a rotor axis 2. The rotor disks 3 are fixed here by means of clamping elements 4, which are formed from clamping jaws in the embodiment shown. In order to keep the rotor disks 3 in their position fixed on the rotor axis 2 and in particular to keep them from being displaced along the rotor axis 2, a spacer 5 is fixed between each two rotor disks 3. The spacers 5 are in this case designed as essentially tubular elements which are provided with fastening flanges 6 at their end regions facing the rotor disks 3 in order to achieve a releasable fixing, in the present case one To enable screwing by means of screws 7 and nuts 8, between the rotor disks 3 and the spacers 5. The fastening flanges 6 are designed in such a way that they clearly protrude beyond the tube diameter of the spacers 5 in order to enable a secure fixing and in particular an arrangement of a sufficient number of fastening elements (7, 8). In order to also secure the spacers 5 on the rotor axis 2 against displacement, they are also fixed on at least one end region by clamping elements 4 on the rotor axis 2. In order to prevent warping or other damage to the spacers 5 in the area of the fixing of the clamping elements 4, the spacers in this end region 9 are formed with a greater material thickness.

Um insbesondere ein Eindringen von Verunreinigungen in den Zwischenraum zwischen der Rotorachse 2 und den Abstandhaltern 5 hintanzuhalten, ist an jeder endständigen Rotorscheibe 3 eine Abdeckscheibe 10 vorgesehen. Die Abdeckscheibe 10 ist hierbei so ausgebildet, dass sie die Rotorachse 2 im Wesentlichen ohne Spiel umgreift und mittels lösbarer Festlegungselemente, wie Schrauben 7 und Muttern 8, an der benachbarten Rotorscheibe 3 festgelegt ist.A cover disk 10 is provided on each terminal rotor disk 3 in order in particular to prevent contaminants from penetrating into the intermediate space between the rotor axis 2 and the spacers 5. The cover disk 10 is designed such that it encompasses the rotor axis 2 essentially without play and is secured to the adjacent rotor disk 3 by means of releasable fixing elements, such as screws 7 and nuts 8.

Die Rotorscheiben 3 weisen im Vergleich zu den Abstandhaltern 5 eine deutlich größere radiale Erstreckung auf und jede Rotorscheibe 3 weist im Bereich ihres Außenumfangs 11 wenigstens eine sackartige Ausnehmung 12 ausgebildet. Die sackartige Ausnehmung 12 ist hierbei so angeordnet, dass sie einem Messerträger 13 in Drehrichtung der Vorrichtung vorläuft. Die Messerträger, ebenso wie daran lösbar festgelegte Messer 14 sowie zum Schutz von Messern 14 und Messerträger 13 angeordnete Verschleißscheiben 15 sind hierbei in an sich bekannter Weise ausgebildet, wobei auch diese Elemente der Vorrichtung lösbar an den Rotorscheiben 3, insbesondere mittels Schrauben 7 und Muttern 8 festgelegt sind. Vorzugsweise sind an jeder Rotorscheibe 3 zwei Messerträger 13 lösbar festgelegt, wobei die Messerträger bei Vorhandensein von zwei Messerträgern 13 an einer Rotorscheibe um 180° versetzt sind. Bei Vorsehen von mehr als zwei Messerträgern 13 an einer Rotorscheibe sind diese gleichmäßig um den Umfang 11 der Rotorscheibe 3 beabstandet anzuordnen. Um insbesondere eine ungleichmäßige Belastung der Vorrichtung im Betrieb hintanzuhalten sind weiterhin die Messerträger 13 benachbarter Rotorscheiben zueinander versetzt, vorzugsweise so versetzt angeordnet, dass sie möglichst über den gesamten Umfang 11 sämtlicher Rotorscheiben 3 gleichmäßig verteilt angeordnet sind.The rotor disks 3 have a significantly larger radial extension in comparison to the spacers 5 and each rotor disk 3 has at least one sack-like recess 12 in the region of its outer circumference 11. The sack-like recess 12 is arranged such that it leads a knife carrier 13 in the direction of rotation of the device. The knife carriers, as well as knives 14 releasably attached to them, and wear disks 15 arranged to protect knives 14 and knife carriers 13 are designed in a manner known per se, these elements of the device also being detachably attached to the rotor disks 3, in particular by means of screws 7 and nuts 8 are set. Preferably, two knife carriers 13 are releasably attached to each rotor disk 3, the knife carriers being offset by 180 ° in the presence of two knife carriers 13 on a rotor disk. If more than two knife carriers 13 are provided on a rotor disk, these are to be arranged evenly spaced around the circumference 11 of the rotor disk 3. In order, in particular, to prevent an uneven load on the device during operation, the knife carriers 13 of adjacent rotor disks are further offset from one another, preferably arranged so that they are arranged as evenly as possible over the entire circumference 11 of all rotor disks 3.

Schließlich kann aufgrund der Tatsache, dass sämtliche die Messertrommel 1 der Vorrichtung zum Zerspanen von Holz ausbildenden Elemente lösbar, insbesondere miteinander verschraubt oder verklemmt, aneinander festgelegt sind jedes Element leicht gewartet und repariert werden und überdies kann bei die Vorrichtung bei Bedarf durch Hinzufügen von weiteren Abstandhaltern 5 und Rotorscheiben 3 oder Wegnehmen dieser Elemente an vorliegende Betriebserfordernisse angepasst werden.Finally, due to the fact that all the elements forming the knife drum 1 of the device for machining wood can be detached, in particular screwed or clamped to one another, each element can be easily serviced and repaired and, moreover, the device can, if necessary, be added by adding further spacers 5 and rotor disks 3 or removal of these elements can be adapted to existing operating requirements.

Claims (10)

  1. A device for chipping wood, comprising a plurality of rotor discs (3) disposed on a rotor axle (2) of a rotor, wherein at least one knife holder (13) with a knife (14) detachably fixed thereto is provided on each of the rotor discs (3), and wherein the rotor discs (3) are disposed on the rotor axle (2) in a spaced-apart relationship via interposed spacers (5) and are fastened to one another, characterized in that a detachably fixed spacer (5) is each provided between two rotor discs (3) detachably fixed to the rotor axle (2), that each of the spacers (5) is designed as a substantially tube-shaped element comprising fastening flanges (6) disposed in its two end regions and extending over a tube diameter, and that at least the rotor discs (3) are fixed to the rotor axle (2) by clamping elements (4).
  2. A device according to claim 1, characterized in that both the rotor discs (3) and the spacers (5) are fixed to the rotor axle (2) by clamping elements (4).
  3. A device according to claim 2, characterized in that each of the spacers (5) in an end region is fixed to the rotor axle (2) by clamping elements (4).
  4. A device according to claim 1, 2 or 3, characterized in that each of the spacers (5) is designed with an increased material thickness (9) in at least one of its end regions.
  5. A device according to any one of claims 1 to 4, characterized in that the clamping elements (4) are selected from clamping sets or friction bushes.
  6. A device according to any one of claims 1 to 5, characterized in that each of the rotor discs (3) terminally disposed on the rotor axle (2) is provided with a cover disc (10) detachably fixed to the rotor disc (3) and embracing the rotor axle (2) substantially without play.
  7. A device according to any one of claims 1 to 6, characterized in that each of the rotor discs (3) is provided with two knife holders (13) detachably fixed thereto at a distance of 180°.
  8. A device according to any one of claims 1 to 7, characterized in that at least two rotor discs (3) are fixed to the rotor axle (2), and that the knife holders (13) are disposed on adjacent rotor discs (3) in a relatively offset manner.
  9. A device according to any one of claims 1 to 8, characterized in that each of the rotor discs (3) comprises a recess (12), in particular a pocket-like recess (12), in its region preceding a knife holder (13).
  10. A device according to any one of claims 1 to 9, characterized in that all elements forming the device for chipping are detachably fixed to each other, in particular screwed to each other and/or clamped to each other.
EP17450013.2A 2016-11-18 2017-11-15 Device for chipping wood Active EP3323572B1 (en)

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SI201730210T SI3323572T1 (en) 2016-11-18 2017-11-15 Device for chipping wood
PL17450013T PL3323572T3 (en) 2016-11-18 2017-11-15 Device for chipping wood

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ATGM278/2016U AT15563U1 (en) 2016-11-18 2016-11-18 Device for cutting wood

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ES (1) ES2781950T3 (en)
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CN114082494A (en) * 2021-11-25 2022-02-25 重庆隆鑫通航发动机制造有限公司 Cutting device for branch crusher and branch crusher

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DE2618254A1 (en) * 1976-04-27 1977-11-10 Jenz Masch & Fahrzeug Hans Wood and paper refuse cutting drum - has discs mounted along shaft, each with projecting cutter blades
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DE102006012117A1 (en) * 2006-03-14 2007-09-20 Ahwi Maschinenbau Gmbh Crushing rotor for the production of wood chips
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AT508095B1 (en) * 2009-03-27 2011-01-15 Eschlboeck Maschb Gmbh DEVICE FOR CRIMPING WOOD
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PL3323572T3 (en) 2020-07-13
AT15563U1 (en) 2018-01-15
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SI3323572T1 (en) 2020-06-30
DK3323572T3 (en) 2020-04-06
ES2781950T3 (en) 2020-09-09

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