EP1149631B1 - Tool mounting for a rotary cutter - Google Patents

Tool mounting for a rotary cutter Download PDF

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Publication number
EP1149631B1
EP1149631B1 EP01110259A EP01110259A EP1149631B1 EP 1149631 B1 EP1149631 B1 EP 1149631B1 EP 01110259 A EP01110259 A EP 01110259A EP 01110259 A EP01110259 A EP 01110259A EP 1149631 B1 EP1149631 B1 EP 1149631B1
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EP
European Patent Office
Prior art keywords
tools
tool
clamping screw
region
shaft
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
EP01110259A
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German (de)
French (fr)
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EP1149631A1 (en
Inventor
Rudolf Dipl.-Ing. Pretzler
Josef Ing. Heissenberger
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.)
Komptech GmbH
Original Assignee
Komptech GmbH
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Filing date
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Application filed by Komptech GmbH filed Critical Komptech GmbH
Publication of EP1149631A1 publication Critical patent/EP1149631A1/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
    • B02C19/00—Other disintegrating devices or methods
    • B02C19/22—Crushing mills with screw-shaped crushing means
    • 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

Definitions

  • the invention relates to a tool attachment of a milling drum according to the preamble of claim 1.
  • the universal mixing shredders For processing and processing of biogenic material, it is known to use universal mixing shredder.
  • the universal mixing shredders have a plurality of milling drums which serve for comminution and mixing of the biogenic material with these wear bottoms, which are at least partially surrounded.
  • the biogenic material consists of biowaste, for example kitchen and garden waste, to which green waste can be mixed to the desired extent by means of the universal mixing shredder.
  • the milling rollers used for comminution and mixing have helically extending with the rotatably driven shaft undetachably connected tools, with which in turn wear tools are releasably connected again.
  • the wearing tools are screwed to the side of the bracket with several screws, see eg FR 2 356 613 A .
  • the fastening screws for the wearing tools must be provided in large numbers and in solid construction. Due to the high number and the unfavorable position of these mounting screws, the tool change is very time consuming.
  • the object of the invention is therefore to improve a tool attachment for a generic milling drum such that the tool change of more frequently changing wear tools is time-saving and easy.
  • a slot-shaped recess may be provided with an edge region having at least one bevel such that the bevel of the edge region of this recess forms a support surface forming parallel to the bearing surface of the clamping screw.
  • the clamping screw can rest flat, with a large contact surface is created.
  • the wear tool can be securely pressed into the conically converging pocket-shaped recess, so that the wear tool is clamped free of play in the recess.
  • the tools which are permanently connected to the shaft can have, in the region of each pocket-shaped recess, a receiving area for the clamping screw which projects out from the surface.
  • a receiving area for the clamping screw which projects out from the surface.
  • only a portion of the receiving area can be provided with a thread corresponding to the clamping screw, so that a large free clamping length is created for the clamping screw.
  • a large free span length for the clamping screw and the large bearing surface of the clamping screw on the support surface, which is formed in the edge region of the slot provided in the wear tool prevents unwanted loosening of the tool during operation. Due to the protruding receiving area, which is easily accessible from the outside, the wear tool can be changed easily and quickly by means of an air or electric screwdriver.
  • Fig. 1 is a milling drum 10 of a Mischzerkleinerers shown.
  • the milling drum consists of a drivable shaft 12, on which helically extending tools 14 are welded.
  • the tools 14 are wear tools 16th releasably secured again.
  • the helically extending tools 14 consist of radially protruding from the shaft 12 sheets 18 which are arranged offset from one another such that the helical shape results.
  • FIGS. 5 and 6 show the wear tools 16. These are flat and symmetrical, so that they can be used on both sides.
  • the wear tools essentially have a working area 20 and a holding area 22.
  • the working area 20 has the shape known in the case of wear tools with beveled flanks in the head area and in the side areas.
  • the holding region 22 is tapered conically, as can be seen from the illustration according to FIG FIG. 5 results. This shape corresponds to a pocket-shaped recess 24 conically converging in the direction of the drivable shaft in the tool 14 which is permanently connected to the shaft (see FIGS FIGS. 2 to 4 ).
  • the projecting receiving portion 26 is designed such that the clamping screw 28 is screwed obliquely to the shaft 12 in the receiving area 26.
  • Fig. 3 is shown in more detail that the clamping screw 28 is supported with a corresponding screwing into a slot area 30 in the wear tool 16 on a support surface 32 over a large area. Due to the symmetrical structure of the wear tool 16, this support surface 32 is provided from both sides in the slot area 30. Thus, the wear tool can be used in any position and clamped with the clamping screw 28.
  • the receiving portion 26 for the clamping screw becomes clear, easily accessible from the outside, so that the clamping screw 28 can be tightened or loosened by means of an air or electric screwdriver in a simple manner. Only part of the reception area 26 is provided with a screwdriver corresponding thread 33, so that the clamping screw itself has a large free span length 34.
  • the wear tool is clamped over its wedge-shaped holding portion 22 in the corresponding wedge-shaped receiving pocket 24. Due to the large support surface 32 and the large free clamping length 34 of the clamping screw 28 loosening of the tool is prevented.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Milling Processes (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Crushing And Pulverization Processes (AREA)
  • Food-Manufacturing Devices (AREA)

Abstract

Milling machine (10) comprises tools (14) welded to a rotating shaft (12) with grinding tools (16) attached to the tools. Conically running recesses are formed in the tools into which the grinding tools are inserted. Each grinding tool is tensioned in the recess.

Description

Die Erfindung betrifft eine Werkzeugbefestigung einer Fräswalze nach dem Oberbegriff des Anspruchs 1.The invention relates to a tool attachment of a milling drum according to the preamble of claim 1.

Zur Bearbeitung und Aufbereitung von biogenem Material ist es bekannt, Universalmischzerkleinerer einzusetzen. Die Universalmischzerkleinerer weisen in der Regel mehrere Fräswalzen auf, die mit diesen zumindest teilweise umgebenen Verschleißböden zur Zerkleinerung und Vermischung des biogenen Materials dienen. Das biogene Material besteht aus Bioabfall, beispielsweise Küchen- und Gartenabfällen, denen mittels des Universalmischzerkleinerers Grünabfälle in gewünschtem Umfang zumischbar sind. Die zur Zerkleinerung und Mischung dienenden Fräswalzen weisen wendelförmig verlaufende mit der drehbar antreibbaren Welle unlösbar verbundene Werkzeuge auf, mit welchen wiederum Verschleißwerkzeuge wieder lösbar verbunden sind. Die Verschleißwerkzeuge sind mit mehreren Schrauben an den entsprechenden Halterungen seitlich angeschraubt siehe z.B. FR 2 356 613 A . Bei den in den Universalmischzerkleinerer auftretenden extrem hohen Belastungen müssen die Befestigungsschrauben für die Verschleißwerkzeuge in großer Anzahl und in massiver Ausführung vorgesehen werden. Durch die hohe Anzahl und die ungünstige Lage dieser Befestigungsschrauben gestaltet sich der Werkzeugwechsel sehr zeitintensiv.For processing and processing of biogenic material, it is known to use universal mixing shredder. As a rule, the universal mixing shredders have a plurality of milling drums which serve for comminution and mixing of the biogenic material with these wear bottoms, which are at least partially surrounded. The biogenic material consists of biowaste, for example kitchen and garden waste, to which green waste can be mixed to the desired extent by means of the universal mixing shredder. The milling rollers used for comminution and mixing have helically extending with the rotatably driven shaft undetachably connected tools, with which in turn wear tools are releasably connected again. The wearing tools are screwed to the side of the bracket with several screws, see eg FR 2 356 613 A , With the extremely high loads occurring in the universal mixing shredder, the fastening screws for the wearing tools must be provided in large numbers and in solid construction. Due to the high number and the unfavorable position of these mounting screws, the tool change is very time consuming.

Aufgabe der Erfindung ist es daher, eine Werkzeugbefestigung für eine gattungsgemäße Fräswalze derart zu verbessern, daß der Werkzeugwechsel der häufiger zu wechselnden Verschleißwerkzeuge zeitsparend und einfach ermöglicht wird.The object of the invention is therefore to improve a tool attachment for a generic milling drum such that the tool change of more frequently changing wear tools is time-saving and easy.

Ausgehend von einer Werkzeugbefestigung gemäß dem Oberbegriff des Anspruchs 1 wird diese Aufgabe durch die Kombination mit den Merkmalen des kennzeichnenden Teils des Anspruchs 1 gelöst. Demnach weisen die unlösbar mit der Welle verbundenen Werkzeuge in Richtung zur antreibbaren Welle konisch zusammenlaufende taschenförmige Ausnehmungen auf, in die jeweils ein entsprechend geformter Bereich des Verschleißwerkzeuges einsetzbar ist, wobei das jeweilige Verschleißwerkzeug durch eine schräg zur antreibbaren Welle hin gerichtete Spannschraube in der taschenförmigen Ausnehmung spielfrei verspannbar ist. Gemäß der Erfindung wird zunächst für jedes Verschleißwerkzeug nur eine Spannschraube vorgesehen, die aufgrund ihrer Anordnung sehr gut zugänglich ist. Dadurch kann durch Anziehen bzw. Lösen einer einzigen Spannschraube das Verschleißwerkzeug sicher befestigt bzw. zum Herausnehmen freigegeben werden.Starting from a tool attachment according to the preamble of claim 1, this object is achieved by the combination with the features of the characterizing part of claim 1. Accordingly, the tools permanently connected to the shaft in the direction of the driven shaft on conically converging pocket-shaped recesses, in each of which a correspondingly shaped portion of the wear tool is used, the respective wear tool by a diagonally to the driven shaft directed clamping screw in the pocket-shaped recess play is clamped. According to the invention, only one clamping screw is initially provided for each wearing tool, which is very easily accessible due to their arrangement. As a result, by tightening or loosening a single clamping screw, the wear tool can be securely fastened or released for removal.

Bevorzugte Ausgestaltungen der Erfindung ergeben sich aus den sich an den Hauptanspruch anschließenden Unteransprüchen.Preferred embodiments of the invention will become apparent from the subsequent claims to the main claim.

Demnach kann in dem Verschleißwerkzeug eine schlitzförmige Ausnehmung mit einem zumindestens eine Schräge aufweisenden Randbereich derart vorgesehen sein, daß die Schräge des Randbereichs dieser Ausnehmung eine parallel zur Auflagefläche der Spannschraube bildende Abstützfläche bildet. Hierdurch kann die Spannschraube eben aufliegen, wobei eine große Auflagefläche geschaffen wird. Hierdurch kann durch Festziehen der Spannschraube das Verschleißwerkzeug sicher in die konisch zusammenlaufende taschenförmige Ausnehmung gedrückt werden, so daß das Verschleißwerkzeug spielfrei in der Ausnehmung verspannt ist.Accordingly, in the wear tool, a slot-shaped recess may be provided with an edge region having at least one bevel such that the bevel of the edge region of this recess forms a support surface forming parallel to the bearing surface of the clamping screw. As a result, the clamping screw can rest flat, with a large contact surface is created. As a result, by tightening the clamping screw, the wear tool can be securely pressed into the conically converging pocket-shaped recess, so that the wear tool is clamped free of play in the recess.

Zur Aufnahme der Spannschraube können die unlösbar mit der Welle verbundenen Werkzeuge im Bereich jeder taschenförmigen Ausnehmung einen von der Oberfläche herausspringenden Aufnahmebereich für die Spannschraube aufweisen. Hier kann nur ein Teil des Aufnahmebereichs mit einem der Spannschraube entsprechenden Gewinde versehen sein, so daß eine große freie Spannlänge für die Spannschraube geschaffen wird. Gerade das Vorsehen einer großen freien Spannlänge für die Spannschraube sowie die große Auflagefläche der Spannschraube auf der Abstützfläche, die im Randbereich des im Verschleißwerkzeug vorgesehenen Schlitzes gebildet ist, verhindert ein unerwünschtes Lockern des Werkzeuges während des Betriebes. Aufgrund des herausspringenden Aufnahmebereichs, der von außen gut zugänglich ist, kann das Verschleißwerkzeug mittels eines Luft- bzw. Elektroschraubers einfach und schnell gewechselt werden.To accommodate the clamping screw, the tools which are permanently connected to the shaft can have, in the region of each pocket-shaped recess, a receiving area for the clamping screw which projects out from the surface. Here, only a portion of the receiving area can be provided with a thread corresponding to the clamping screw, so that a large free clamping length is created for the clamping screw. Especially the provision of a large free span length for the clamping screw and the large bearing surface of the clamping screw on the support surface, which is formed in the edge region of the slot provided in the wear tool, prevents unwanted loosening of the tool during operation. Due to the protruding receiving area, which is easily accessible from the outside, the wear tool can be changed easily and quickly by means of an air or electric screwdriver.

Weitere Einzelheiten und Vorteile der Erfindung ergeben sich aus einem in der Zeichnung dargestellten Ausführungsbeispiel. Es zeigen:

  • Fig. 1: eine Fräswalze gemäß einer erfindungsgemäßen Ausführungsform,
  • Fig. 2 bis
  • Fig. 4: verschiedene Ansichten (teilweise geschnitten) eines Details der auf den Fräswalzen aufsitzenden Werkzeuge,
  • Fig. 5: eine Draufsicht auf ein Verschleißwerkzeug, das mit der Werkzeugbefestigung gemäß dem Ausführungsbeispiel festlegbar ist und
  • Fig. 6: eine Seitenansicht (teilweise geschnitten) des Verschleißwerkzeuges nach Fig. 5.
Further details and advantages of the invention will become apparent from an embodiment shown in the drawing. Show it:
  • Fig. 1 a milling drum according to an embodiment of the invention,
  • Fig. 2 to
  • Fig. 4 Fig. 5: various views (partly in section) of a detail of the tools seated on the milling rollers,
  • Fig. 5 : A plan view of a wear tool, which is fixable with the tool attachment according to the embodiment and
  • Fig. 6 a side view (partially cut) of the wear tool after Fig. 5 ,

In Fig. 1 ist eine Fräswalze 10 eines Mischzerkleinerers dargestellt. Die Fräswalze besteht aus einer antreibbaren Welle 12, auf der wendelförmig verlaufende Werkzeuge 14 angeschweißt sind. In den Werkzeugen 14 sind Verschleißwerkzeuge 16 wieder lösbar befestigt. Die wendelförmig verlaufenden Werkzeuge 14 bestehen aus strahlenförmig von der Welle 12 abstehenden Blechen 18, die derart versetzt zueinander angeordnet sind, daß sich die Wendelform ergibt.In Fig. 1 is a milling drum 10 of a Mischzerkleinerers shown. The milling drum consists of a drivable shaft 12, on which helically extending tools 14 are welded. In the tools 14 are wear tools 16th releasably secured again. The helically extending tools 14 consist of radially protruding from the shaft 12 sheets 18 which are arranged offset from one another such that the helical shape results.

Die Figuren 5 und 6 zeigen die Verschleißwerkzeuge 16. Diese sind flach und symmetrisch ausgeführt, so daß sie beidseitig eingesetzt werden können. Die Verschleißwerkzeuge weisen im wesentlichen einen Arbeitsbereich 20 und einen Haltebereich 22 auf. Der Arbeitsbereich 20 weist die bei den Verschleißwerkzeugen bekannte Form mit angeschrägten Flanken im Kopfbereich und in den Seitenbereichen auf. Der Haltebereich 22 ist konisch verjüngt ausgebildet, wie sich dies aus der Darstellung gemäß der Figur 5 ergibt. Diese Formgebung entspricht einer in Richtung zur antreibbaren Welle konisch zusammenlaufenden taschenförmigen Ausnehmung 24 in dem unlösbar mit der Welle verbundenden Werkzeug 14 (vgl. die Figuren 2 bis 4). Zwischen zwei strahlenförmig von der Welle abstehenden Platten 18 des fest mit der Welle verbundenen Werkzeuges 14 ist ein aus der Oberfläche herausspringender Aufnahmebereich 26 zur Aufnahme einer Spannschraube 28 vorgesehen. Der vorspringende Aufnahmebereich 26 ist derart ausgeführt, daß die Spannschraube 28 schräg zur Welle 12 in den Aufnahmebereich 26 einschraubbar ist.The FIGS. 5 and 6 show the wear tools 16. These are flat and symmetrical, so that they can be used on both sides. The wear tools essentially have a working area 20 and a holding area 22. The working area 20 has the shape known in the case of wear tools with beveled flanks in the head area and in the side areas. The holding region 22 is tapered conically, as can be seen from the illustration according to FIG FIG. 5 results. This shape corresponds to a pocket-shaped recess 24 conically converging in the direction of the drivable shaft in the tool 14 which is permanently connected to the shaft (see FIGS FIGS. 2 to 4 ). Between two radially projecting from the shaft plates 18 of the fixedly connected to the shaft tool 14 a projecting out of the surface receiving portion 26 for receiving a clamping screw 28 is provided. The projecting receiving portion 26 is designed such that the clamping screw 28 is screwed obliquely to the shaft 12 in the receiving area 26.

In Fig. 3 ist näher dargestellt, daß die Spannschraube 28 bei entsprechendem Einschrauben sich in einen Schlitzbereich 30 im Verschleißwerkzeug 16 an einer Auflagefläche 32 großflächig abstützt. Aufgrund des symmetrischen Aufbaus des Verschleißwerkzeuges 16 ist diese Abstützfläche 32 von beiden Seiten her im Schlitzbereich 30 vorgesehen. Somit kann das Verschleißwerkzeug in beliebiger Stellung eingesetzt und mit der Spannschraube 28 verspannt werden.In Fig. 3 is shown in more detail that the clamping screw 28 is supported with a corresponding screwing into a slot area 30 in the wear tool 16 on a support surface 32 over a large area. Due to the symmetrical structure of the wear tool 16, this support surface 32 is provided from both sides in the slot area 30. Thus, the wear tool can be used in any position and clamped with the clamping screw 28.

Der Aufnahmebereich 26 für die Spannschraube ist, wie aus den Figuren 2 und 4 und der Zusammenstellungsfigur 1 deutlich wird, von außen leicht zugänglich, so daß die Spannschraube 28 mittels eines Luft- bzw. Elektroschraubers in einfacher Weise festgezogen bzw. gelöst werden kann. Nur ein Teil des Aufnahmebereichs 26 ist mit einem der Spannschrauber entsprechenden Gewinde 33 versehen, so daß die Spannschraube selbst eine große freie Spannlänge 34 aufweist.The receiving portion 26 for the clamping screw, as shown in FIGS. 2 and 4 and the compilation figure 1 becomes clear, easily accessible from the outside, so that the clamping screw 28 can be tightened or loosened by means of an air or electric screwdriver in a simple manner. Only part of the reception area 26 is provided with a screwdriver corresponding thread 33, so that the clamping screw itself has a large free span length 34.

Mittels der Spannschraube wird das Verschleißwerkzeug über seinen keilförmigen Haltebereich 22 in der entsprechend keilförmig gebildeten Aufnahmetasche 24 verspannt. Aufgrund der großen Auflagefläche 32 und der großen freien Spannlänge 34 der Spannschraube 28 wird ein Lockern des Werkzeuges verhindert.By means of the clamping screw the wear tool is clamped over its wedge-shaped holding portion 22 in the corresponding wedge-shaped receiving pocket 24. Due to the large support surface 32 and the large free clamping length 34 of the clamping screw 28 loosening of the tool is prevented.

Claims (3)

  1. A tool mounting for a rotary cutter, in particular for a waste management machine, comprising tools which preferably extend in a helical manner on a rotatably drivable shaft and are non-releasably connected thereto and abrasion tools again releasably received in said tools for the again releasable mounting of the abrasion tools,
    characterised by
    pocket-shape cut-outs in the tools non-releasably connected to the shaft which converge conically in the direction toward the drivable shaft and into which a correspondingly shaped region of the abrasion tool can be inserted, with the respective abrasion tool being able to be braced without play in the pocket-shaped cut-out by a clamping bolt obliquely directed toward the drivable shaft.
  2. A tool mounting in accordance with claim 1, characterised in that a slot-shaped cut-out comprising a marginal region having at least one slant is provided in the abrasion tool such that the slant of the marginal region of this cut-out forms a support surface parallel to the support surface of the clamping screw.
  3. A tool mounting in accordance with either of claims 1 or 2 characterised in that the tools non-releasably connected to the shaft have a reception region for the clamping screw in the region of each pocket-shaped cut-out, said reception region projecting out from the surface, with only a part of the reception region being provided with a thread corresponding to the clamping screw such that a large free clamping length is provided for the clamping screw.
EP01110259A 2000-04-28 2001-04-25 Tool mounting for a rotary cutter Expired - Lifetime EP1149631B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE20007764U DE20007764U1 (en) 2000-04-28 2000-04-28 Tool attachment for a milling drum
DE20007764U 2000-04-28

Publications (2)

Publication Number Publication Date
EP1149631A1 EP1149631A1 (en) 2001-10-31
EP1149631B1 true EP1149631B1 (en) 2008-10-29

Family

ID=7940855

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01110259A Expired - Lifetime EP1149631B1 (en) 2000-04-28 2001-04-25 Tool mounting for a rotary cutter

Country Status (5)

Country Link
EP (1) EP1149631B1 (en)
AT (1) ATE412467T1 (en)
DE (2) DE20007764U1 (en)
DK (1) DK1149631T3 (en)
ES (1) ES2312381T3 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20007764U1 (en) * 2000-04-28 2000-10-12 Heissenberger & Pretzler Gmbh Tool attachment for a milling drum

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2630103C3 (en) * 1976-07-03 1980-09-25 Trenkle Gmbh, 7730 Villingen Machine for moving compost heaps
DE19615662A1 (en) * 1996-04-19 1997-10-23 Heissenberger & Pretzler Gmbh Device for processing bio waste
EP0976442A3 (en) * 1998-07-31 2002-06-05 F. Zettl GmbH & Co. Mixing device
DE20007764U1 (en) * 2000-04-28 2000-10-12 Heissenberger & Pretzler Gmbh Tool attachment for a milling drum

Also Published As

Publication number Publication date
DE20007764U1 (en) 2000-10-12
DE50114444D1 (en) 2008-12-11
ES2312381T3 (en) 2009-03-01
EP1149631A1 (en) 2001-10-31
DK1149631T3 (en) 2009-01-05
ATE412467T1 (en) 2008-11-15

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