EP1550365B1 - Shredder for the comminution of organic material - Google Patents

Shredder for the comminution of organic material Download PDF

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Publication number
EP1550365B1
EP1550365B1 EP04029937A EP04029937A EP1550365B1 EP 1550365 B1 EP1550365 B1 EP 1550365B1 EP 04029937 A EP04029937 A EP 04029937A EP 04029937 A EP04029937 A EP 04029937A EP 1550365 B1 EP1550365 B1 EP 1550365B1
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EP
European Patent Office
Prior art keywords
shredder
accordance
extension
housing
feeding funnel
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EP04029937A
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German (de)
French (fr)
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EP1550365A1 (en
Inventor
Georg Duregger
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Viking GmbH
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Viking GmbH
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Publication of EP1550365A1 publication Critical patent/EP1550365A1/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
    • B02C18/08—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within vertical containers
    • B02C18/083—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within vertical containers with a disc rotor having generally radially extending slots or openings bordered with cutting 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
    • B02C18/16—Details
    • B02C18/22—Feed or discharge means
    • B02C18/2225—Feed means
    • B02C18/2291—Feed chute arrangements

Definitions

  • the invention relates to a shredder for comminuting organic material, in particular garden shredder for branches, scrub or the like., According to the preamble of claim 1.
  • Such shredders have a rotating cutter disc which carries at least one chopper knife. An approximately radially extending blade of the chopper blade cooperates with a stop fixed to the housing in order to comminute material introduced into the knife chamber.
  • the material to be shredded such as small branches, scrub, larger branches and the like, is fed via a hopper to the knife chamber. Forces acting on the hopper must be safely derived in the basic housing of the chopper, on the other hand, must be removed to eliminate interference in the knife chamber or for maintenance of the blade of the hopper together with the lid easily.
  • a shredder is known whose hopper is fixed on a lid of the knife chamber. Threaded bolts of the knife chamber pass through fastening tabs of the cover, which is fixed by means of wing nuts screwed onto the threaded bolts on the knife chamber. To open the knife chamber, the nuts must first be loosened and the lid lifted off, which is complicated and cumbersome.
  • the invention has the object of developing a shredder of the generic type such that the hopper on the one hand securely held on the base housing and on the other hand is still easily disassembled.
  • the knife chamber has at least one finger-like to paw-shaped, outer extension, which engages in an associated receptacle of the housing wall of the hopper and determines the single funnel form-fitting manner on the knife chamber.
  • This simple design is mechanically highly resilient, since the forces to be derived in each case act on the edges of the recess transversely to the longitudinal direction of the extension on this and therefore a force transmission takes place substantially in the wall plane of the lid and the hopper.
  • a power transmission to the extension of the knife chamber is not provided;
  • the hopper is fixed to the housing in its closed position with a closure device secured, whereby a fixing in the longitudinal direction of the extensions is achieved.
  • the closure device is released and the hopper advantageously pivoted about a transverse to the extension of the knife chamber pivot axis, so that - as soon as the lid is pivoted far enough high - the lid with the hopper in can be easily withdrawn from the extension, so that the hopper is separated with the lid from the main body of the chopper.
  • the knife chamber is freely accessible for maintenance or repair work.
  • the closure device is at a distance from the pivot axis, wherein the extension is preferably arranged on one side of the knife chamber and the closure device on the other, approximately diametrically opposite side of the knife chamber.
  • each extension has a substantially flat underside facing away from the hopper, and is provided with a preferably part-cylindrical rounded end face, which merges into a flat top of the extension.
  • the cylinder axis of the part-cylindrical curve of the end face is preferably parallel to the pivot axis of the hopper.
  • the receptacle in the housing wall of the hopper or its lid is formed as an outwardly open engagement opening, wherein the rounded end face of an extension comes to rest as a partial area in the outer surface of the hopper and there forms a partial surface of the outer surface.
  • the in Fig. 1 shown chopper 1 consists essentially of a base housing 2 with a blade chamber 3 therein ( Fig. 4 ).
  • the knife housing 3 provided in the base housing 2 is closed by a cover 4, which at the same time forms a partial housing 5 of an ejection 6 (FIG. Fig. 1 ) forms for the shredded material.
  • the ejection 6 is limited by a lower housing part 7 of the base housing 2 and the partial housing 5 of the lid 4, which covers the lower housing part 7.
  • the housing cover 4 is part of a filling funnel 8, through which the cutter chamber 3 chopped material is supplied. This can be organic material such as small branches, scrub, larger branches and the like.
  • the hopper 8 has in the embodiment shown a slightly oval shape ( Fig. 1, 2 ); It may be appropriate to form the hopper 8 round or in other circular geometry.
  • the height H of the hopper 8 shown in the embodiment is to be selected according to the conditions of use.
  • the drive for the knife blade 10 rotating in the knife chamber 3 is provided next to the knife chamber 3, wherein the drive motor, which is preferably designed as an electric motor, is to be operated via switches arranged in a control panel 9.
  • the control panel 9 is provided at a suitable location on the base housing 2.
  • the knife disk 10 rotating in the knife chamber 3 in the direction of rotation 11 has several knives 12, 13 and 14, the knives 13 arranged on the outer circumference being aligned in the direction of rotation 11 of the knife disk 10, while the chopping knives 12 have cutting edges 15 extending approximately in the radial direction, which cooperate with a housing-fixed stop 16.
  • a razor blade 14 rotates.
  • a stop 17 is assigned to the rotating outer cutter 13.
  • Fig. 4 shows, the housing 23 of the knife chamber 3 an outer, approximately radial extension 20th on, which is paw-like or hook-like and engages in a receptacle 30 of the housing wall 39 of the hopper 8.
  • a further extension 21 and 22 is provided on both sides next to the central, approximately radial projection 20, which engages in corresponding receptacles 31 and 32 of the hopper 8.
  • the extensions 20, 21 and 22 are at a distance a side by side and have approximately the same orientation.
  • the corresponding recesses 30, 31 and 32 are at a suitable distance A next to each other.
  • Fig. 3 the embodiment of both the extension 20 and the corresponding receptacle 30 on the hopper 8 is shown.
  • the extension 20 has approximately parallel to the plane of the cutting disc 10 extending opposite sides, both the side facing away from the hopper bottom 24 and the individual hopper facing top 25 are formed flat.
  • the front end face 26 is designed rounded from the bottom 24 to the top 25, wherein the rounding is preferably provided part-cylindrical.
  • the top 25 of the extension 20 is - shorter in the longitudinal direction - than the bottom 24. In this case, the end face 26 forms with the bottom 24 a leading, forward edge 37. All extensions 20, 21 and 22 are - like the receptacles 30, 31 and 32 - formed substantially the same.
  • the receptacles 30, 31 and 32 in the hopper 8 are preferably formed in the housing cover 4, which forms the knife chamber 3 facing the end 18 of the hopper 8.
  • the receptacles 30, 31 and 32 lie in the region of the housing cover 4 near the lower edge 19 of the hopper 8 in a row with distance A next to each other and are expediently designed as outwardly open engagement openings.
  • the end face 26 of an extension lies here - like the Fig. 1 and 3
  • the end faces 26 of the extensions 20, 21 and 22 are thus visible from the outside and give the positive connection of the hopper to the base housing 2 an overall aesthetic embossing.
  • the protruding up to the outer surface 27 of the lid 4 projections 20, 21 and 22 acting on the hopper 8 forces directly into the housing 23 of the knife chamber, whereby a stable, resistant connection of the hopper 8 is ensured to the knife chamber. Since the introduction of force takes place exclusively transversely to the extension, the load lies in the plane of the housing wall 33 of the cover 4 or of the filling funnel 8.
  • the knives 16 and 17 associated with the knives of the cutting disc 10 are formed on an insert 33, which forms the lower part of the hopper 8 and is inserted into this hopper 8 and forms with it a structural unit.
  • the outwardly open engagement openings 30, 31 and 32 have - as the extensions 20, 21, 23 - approximately square to rectangular shape.
  • the extensions are approximately in register in the engagement holes.
  • the hopper 8 remote edge 34 of the receiving opening 30 is designed as a system stage 36, the extends parallel to the bottom 24 of the extension 20 and has a measured in the direction of the extension 20 length 1, which corresponds approximately to the measured in the same direction half length of the bottom 24.
  • the housing cover 4 has a closure device 40, which can be designed as a screw plug with a gag or in another suitable manner.
  • the closure device 40 is - relative to the axis of rotation 38 of the cutter disk 10 - the extensions 20, 21 and 22 approximately diametrically opposite on the other side of the blade chamber 3 ( Fig. 1 ) and is fixed to the housing there, in particular fixed to the housing 23 of the knife chamber 3.
  • the closure device 40 is at a distance v to a pivot axis 29 about which the closure lid 4 can be pivoted to the hopper 8.
  • the respective undersides 24 of the extensions 20, 21 and 22 lift off from the abutment steps 36, so that the housing cover 4 with the hopper 8 of the extensions 20, 21 and 22 is released to be removed.
  • the rounding of the end face 26 is provided such that the cylinder axis of the part-cylindrical surface is parallel to or approximately congruent with the pivot axis 29.
  • the engagement openings 30, 31 and 32 of the housing wall 39 must be threaded onto the extensions 20, 21 and 22.
  • the lid 4 is guided such that the investment levels 36 of the engagement openings 30, 31 and 32 are attached to the edges 37, at the junction of the respective lower flat side 24 of the extension 20, 21 and 22nd and its rounded end face 26 is formed.
  • the lid 4 can be pivoted with the hopper 8 opposite to the direction of arrow 28, which due to the guidance of the upper edge 35 on the End faces 26 of the extensions 20, 21 and 22, an exact insertion of the projections into the engagement openings 30, 31 and 32 results, whereby a solid, positive fit is given.
  • closing the closure device 40 by screwing, by a quick release or the like. Sitting the lid 4 fixed to the housing 2 fixed to the housing, so that all forces acting on the hopper 8 or the lid 4 forces safely into the base housing 2 and the housing 23 of the knife chamber 3 are derived.
  • the invention is particularly intended for a shredder in which the knife chamber 3 is formed of a metallic material and the housing 2 as well as the lid 4 with the hopper 8 of a lighter material such as plastic or the like.
  • the positive fixing of the lid 4 with the hopper 8 via the engaging openings in the lid finger-engaging projections ensures a stable, resistant connection between the existing metal housing 23 of the blade chamber 3 on the one hand and the existing plastic hopper 8 and the cover 4 on the other.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Pulverization Processes (AREA)
  • Harvester Elements (AREA)

Abstract

The knife chamber has a tongue-shaped extension (20-22) which engages with a corresponding cavity (30-32) in the feed hopper wall (39) in order to create a form-fit connection between the chamber and hopper (8). The knife chamber in the shredder casing (2) houses a rotary disc (10) on which at least one blade extending in a radial direction is mounted. The blade cooperates with a fixed stop on the casing. Material is added to the chamber via a feed hopper.

Description

Die Erfindung betrifft einen Häcksler zum Zerkleinern von organischem Material, insbesondere Gartenhäcksler für Astwerk, Gestrüpp oder dgl., nach dem Oberbegriff des Anspruchs 1.The invention relates to a shredder for comminuting organic material, in particular garden shredder for branches, scrub or the like., According to the preamble of claim 1.

Derartige Häcksler weisen eine rotierende Messerscheibe auf, die mindestens ein Häckselmesser trägt. Eine sich etwa in Radialrichtung erstreckende Schneide des Häckselmessers wirkt mit einem gehäusefesten Anschlag zusammen, um in die Messerkammer eingeführtes Material zu zerkleinern. Dabei wird das zu zerkleinernde Material wie kleine Äste, Gestrüpp, größere Äste und ähnliches über einen Einfülltrichter der Messerkammer zugeführt. Auf den Einfülltrichter wirkende Kräfte müssen dabei sicher in das Grundgehäuse des Häckslers abgeleitet werden, andererseits muß zum Beseitigen von Störungen in der Messerkammer oder auch zur Wartung der Messerscheibe der Einfülltrichter mitsamt Deckel einfach abgenommen werden können.Such shredders have a rotating cutter disc which carries at least one chopper knife. An approximately radially extending blade of the chopper blade cooperates with a stop fixed to the housing in order to comminute material introduced into the knife chamber. The material to be shredded, such as small branches, scrub, larger branches and the like, is fed via a hopper to the knife chamber. Forces acting on the hopper must be safely derived in the basic housing of the chopper, on the other hand, must be removed to eliminate interference in the knife chamber or for maintenance of the blade of the hopper together with the lid easily.

Aus der WO 81/01527 ist ein Häcksler bekannt, dessen Einfülltrichter auf einem Deckel der Messerkammer festgelegt ist. Gewindebolzen der Messerkammer durchgreifen Befestigungslaschen des Deckels, der mittels auf die Gewindebolzen aufgeschraubten Flügelmuttern an der Messerkammer festgelegt ist. Zum Öffnen der Messerkammer müssen zunächst die Muttern gelöst und der Deckel abgehoben werden, was aufwendig und umständlich ist.From the WO 81/01527 a shredder is known whose hopper is fixed on a lid of the knife chamber. Threaded bolts of the knife chamber pass through fastening tabs of the cover, which is fixed by means of wing nuts screwed onto the threaded bolts on the knife chamber. To open the knife chamber, the nuts must first be loosened and the lid lifted off, which is complicated and cumbersome.

Der Erfindung liegt die Aufgabe zugrunde, einen Häcksler der gattungsgemäßen Art derart weiterzubilden, daß der Einfülltrichter einerseits sicher am Grundgehäuse gehalten ist und andererseits dennoch leicht demontierbar ist.The invention has the object of developing a shredder of the generic type such that the hopper on the one hand securely held on the base housing and on the other hand is still easily disassembled.

Die Aufgabe wird erfindungsgemäß nach den kennzeichnenden Merkmalen des Anspruchs 1 gelöst.The object is achieved according to the characterizing features of claim 1.

Die Messerkammer weist zumindest einen fingerartigen bis tatzenförmigen, äußeren Fortsatz auf, der in eine zugeordnete Aufnahme der Gehäusewand des Einfülltrichters eingreift und den Einzeltrichter formschlüssig an der Messerkammer festlegt. Diese einfache Gestaltung ist mechanisch hoch belastbar, da die abzuleitenden Kräfte jeweils über die Ränder der Ausnehmung quer zur Längsrichtung des Fortsatzes auf diesen einwirken und daher eine Kraftübertragung im wesentlichen in der Wandebene des Deckels bzw. des Einfülltrichters erfolgt. In Längsrichtung des Fortsatzes ist eine Kraftübertragung auf den Fortsatz der Messerkammer nicht vorgesehen; hierzu wird der Einfülltrichter in seiner Verschlußstellung mit einer Verschlußeinrichtung gehäusefest gesichert, wodurch ein Festlegen in Längsrichtung der Fortsätze erzielt ist.The knife chamber has at least one finger-like to paw-shaped, outer extension, which engages in an associated receptacle of the housing wall of the hopper and determines the single funnel form-fitting manner on the knife chamber. This simple design is mechanically highly resilient, since the forces to be derived in each case act on the edges of the recess transversely to the longitudinal direction of the extension on this and therefore a force transmission takes place substantially in the wall plane of the lid and the hopper. In the longitudinal direction of the extension, a power transmission to the extension of the knife chamber is not provided; For this purpose, the hopper is fixed to the housing in its closed position with a closure device secured, whereby a fixing in the longitudinal direction of the extensions is achieved.

Zum Öffnen der Messerkammer, also zur Abnahme des Einfülltrichters mit Deckel, wird die Verschlußeinrichtung gelöst und der Einfülltrichter vorteilhaft um eine quer zum Fortsatz der Messerkammer liegende Schwenkachse aufgeschwenkt, so daß - sobald der Deckel weit genug hoch geschwenkt ist - der Deckel mit dem Einfülltrichter in einfacher Weise von dem Fortsatz abgezogen werden kann, so daß der Einfülltrichter mit dem Deckel vom Grundgehäuse des Häckslers getrennt ist. Die Messerkammer ist für Wartungs- oder Reparaturarbeiten frei zugänglich.To open the knife chamber, so to remove the hopper with lid, the closure device is released and the hopper advantageously pivoted about a transverse to the extension of the knife chamber pivot axis, so that - as soon as the lid is pivoted far enough high - the lid with the hopper in can be easily withdrawn from the extension, so that the hopper is separated with the lid from the main body of the chopper. The knife chamber is freely accessible for maintenance or repair work.

Vorteilhaft liegt die Verschlußeinrichtung dabei mit Abstand zur Verschwenkachse, wobei der Fortsatz bevorzugt auf einer Seite der Messerkammer und die Verschlußeinrichtung auf der anderen, etwa diametral gegenüberliegenden Seite der Messerkammer angeordnet ist.Advantageously, the closure device is at a distance from the pivot axis, wherein the extension is preferably arranged on one side of the knife chamber and the closure device on the other, approximately diametrically opposite side of the knife chamber.

In vorteilhafter Weise sind an der Messerkammer mehrere mit seitlichem Abstand nebeneinanderliegende Fortsätze vorgesehen, um eine gleichmäßige Krafteinleitung von dem Einfülltrichter in die Fortsätze zu gewährleisten. Dabei weist jeder Fortsatz eine im wesentlichen flache Unterseite auf, die vom Einfülltrichter abgewandt liegt, und ist mit einer vorzugsweise teilzylindrisch gerundeten Stirnseite versehen, die in eine flache Oberseite des Fortsatzes übergeht. Die Zylinderachse der teilzylindrischen Rundung der Stirnseite liegt bevorzugt parallel zur Verschwenkachse des Einfüllrichters.Advantageously, a plurality of side-by-side extensions are provided on the knife chamber to ensure a uniform introduction of force from the hopper into the extensions. In this case, each extension has a substantially flat underside facing away from the hopper, and is provided with a preferably part-cylindrical rounded end face, which merges into a flat top of the extension. The cylinder axis of the part-cylindrical curve of the end face is preferably parallel to the pivot axis of the hopper.

In besonderer Ausgestaltung der Erfindung ist die Aufnahme in der Gehäusewand des Einfülltrichters bzw. dessen Deckels als nach außen offene Eingriffsöffnung ausgebildet, wobei die gerundete Stirnseite eines Fortsatzes als Teilfläche in der Außenfläche des Einfülltrichters zu liegen kommt und dort eine Teilfläche der Außenfläche bildet.In a particular embodiment of the invention, the receptacle in the housing wall of the hopper or its lid is formed as an outwardly open engagement opening, wherein the rounded end face of an extension comes to rest as a partial area in the outer surface of the hopper and there forms a partial surface of the outer surface.

Um ein einfaches Auffädeln des Deckels auf die Fortsätze zu gewährleisten, ist vorgesehen, den dem Einfülltrichter abgewandten Rand der Eingriffsöffnung als Anlagestufe auszubilden, der der flachen Unterseite des Fortsatzes zugeordnet ist.In order to ensure a simple threading of the lid on the extensions, is provided facing away from the hopper Form edge of the engagement opening as an investment level, which is associated with the flat bottom of the extension.

Weitere Merkmale der Erfindung ergeben sich aus den weiteren Ansprüchen, der Beschreibung und der Zeichnung, in der ein nachfolgend im Einzelnen beschriebenes Ausführungsbeispiel der Erfindung dargestellt ist. Es zeigen:

Fig. 1
in perspektivischer Darstellung das Gehäuse eines Häckslers,
Fig. 2
eine Ansicht auf den Einfülltrichter von hinten,
Fig. 3
einen Schnitt durch den Einfülltrichter nach der Linie III-III in Fig. 2 mit eingezeichnetem äußeren Fortsatz der Messerkammer,
Fig. 4
in perspektivischer Teilansicht eine geöffnete Messerkammer.
Further features of the invention will become apparent from the other claims, the description and the drawing, in which an embodiment of the invention described in detail below is shown. Show it:
Fig. 1
in a perspective view the housing of a chopper,
Fig. 2
a view of the hopper from behind,
Fig. 3
a section through the hopper along the line III-III in Fig. 2 with marked outer extension of the knife chamber,
Fig. 4
in perspective partial view of an open knife chamber.

Der in Fig. 1 gezeigte Häcksler 1 besteht im wesentlichen aus einem Grundgehäuse 2 mit einer darin vorgesehenen Messerkammer 3 (Fig. 4). Die im Grundgehäuse 2 vorgesehene Messerkammer 3 ist durch einen Deckel 4 verschlossen, der zugleich ein Teilgehäuse 5 eines Auswurfs 6 (Fig. 1) für das Häckselgut bildet. Der Auswurf 6 ist begrenzt durch ein Gehäuseunterteil 7 des Grundgehäuses 2 und das Teilgehäuse 5 des Deckels 4, welches das Gehäuseunterteil 7 abdeckt. Der Gehäusedeckel 4 ist Teil eines Einfülltrichters 8, durch den der Messerkammer 3 Häckselgut zugeführt wird. Dies kann organisches Material wie kleine Äste, Gestrüpp, größere Äste und ähnliches sein. Der Einfülltrichter 8 hat im gezeigten Ausführungsbeispiel eine leicht ovale Form (Fig. 1, 2); es kann zweckmäßig sein, den Einfülltrichter 8 rund oder in anderer kreisförmiger Geometrie auszubilden. Die im Ausführungsbeispiel gezeigte Höhe H des Einfülltrichters 8 ist den Einsatzbedingungen entsprechend zu wählen.The in Fig. 1 shown chopper 1 consists essentially of a base housing 2 with a blade chamber 3 therein ( Fig. 4 ). The knife housing 3 provided in the base housing 2 is closed by a cover 4, which at the same time forms a partial housing 5 of an ejection 6 (FIG. Fig. 1 ) forms for the shredded material. The ejection 6 is limited by a lower housing part 7 of the base housing 2 and the partial housing 5 of the lid 4, which covers the lower housing part 7. The housing cover 4 is part of a filling funnel 8, through which the cutter chamber 3 chopped material is supplied. This can be organic material such as small branches, scrub, larger branches and the like. The hopper 8 has in the embodiment shown a slightly oval shape ( Fig. 1, 2 ); It may be appropriate to form the hopper 8 round or in other circular geometry. The height H of the hopper 8 shown in the embodiment is to be selected according to the conditions of use.

Im Grundgehäuse 2 ist neben der Messerkammer 3 der Antrieb für die in der Messerkammer 3 rotierende Messerscheibe 10 vorgesehen, wobei der vorzugsweise als Elektromotor ausgeführte Antriebsmotor über in einem Bedienfeld 9 angeordnete Schalter zu bedienen ist. Das Bedienfeld 9 ist an geeigneter Stelle am Grundgehäuse 2 vorgesehen.In the base housing 2, the drive for the knife blade 10 rotating in the knife chamber 3 is provided next to the knife chamber 3, wherein the drive motor, which is preferably designed as an electric motor, is to be operated via switches arranged in a control panel 9. The control panel 9 is provided at a suitable location on the base housing 2.

Die in der Messerkammer 3 in Drehrichtung 11 rotierende Messerscheibe 10 weist mehrere Messer 12, 13 und 14 auf, wobei die am Außenumfang angeordneten Messer 13 in Drehrichtung 11 der Messerscheibe 10 ausgerichtet liegen, während die Häckselmesser 12 etwa in Radialrichtung sich erstreckende Schneiden 15 aufweisen, die mit einem gehäusefesten Anschlag 16 zusammenwirken. Im Zentrum der Messerscheibe 10 rotiert ein Reißmesser 14. Neben dem Anschlag 16 für die Häckselmesser 12 ist dem rotierenden Außenmesser 13 ein Anschlag 17 zugeordnet.The knife disk 10 rotating in the knife chamber 3 in the direction of rotation 11 has several knives 12, 13 and 14, the knives 13 arranged on the outer circumference being aligned in the direction of rotation 11 of the knife disk 10, while the chopping knives 12 have cutting edges 15 extending approximately in the radial direction, which cooperate with a housing-fixed stop 16. In the center of the cutter disk 10, a razor blade 14 rotates. In addition to the stop 16 for the chopper blade 12, a stop 17 is assigned to the rotating outer cutter 13.

Wie insbesondere Fig. 4 zeigt, weist das Gehäuse 23 der Messerkammer 3 einen äußeren, etwa radialen Fortsatz 20 auf, der tatzenartig bzw. hakenartig ausgebildet ist und in eine Aufnahme 30 der Gehäusewand 39 des Einfülltrichters 8 eingreift. Im Ausführungsbeispiel ist auf beiden Seiten neben dem mittigen, etwa radialen Fortsatz 20 je ein weiterer Fortsatz 21 und 22 vorgesehen, der in entsprechende Aufnahmen 31 und 32 des Einfülltrichters 8 eingreift. Die Fortsätze 20, 21 und 22 liegen mit Abstand a nebeneinander und haben etwa gleiche Ausrichtung. Die entsprechenden Ausnehmungen 30, 31 und 32 liegen mit angepaßtem Abstand A nebeneinander. In Fig. 3 ist die Ausgestaltung sowohl des Fortsatzes 20 als auch der entsprechenden Aufnahme 30 am Einfülltrichter 8 dargestellt. Der Fortsatz 20 hat etwa parallel zur Ebene der Messerscheibe 10 verlaufende gegenüberliegende Seiten, wobei sowohl die dem Einfülltrichter abgewandte Unterseite 24 als auch die dem Einzeltrichter zugewandte Oberseite 25 flach ausgebildet sind. Die vordere Stirnseite 26 ist von der Unterseite 24 zur Oberseite 25 gerundet gestaltet, wobei die Rundung vorzugsweise teilzylindrisch vorgesehen ist. Die Oberseite 25 des Fortsatzes 20 ist - in dessen Längsrichtung - kürzer ausgebildet als die Unterseite 24. Dabei bildet die Stirnseite 26 mit der Unterseite 24 eine führende, vorn liegende Kante 37. Alle Fortsätze 20, 21 und 22 sind - wie die Aufnahmen 30, 31 und 32 - im wesentlichen gleich ausgebildet.In particular Fig. 4 shows, the housing 23 of the knife chamber 3 an outer, approximately radial extension 20th on, which is paw-like or hook-like and engages in a receptacle 30 of the housing wall 39 of the hopper 8. In the exemplary embodiment, a further extension 21 and 22 is provided on both sides next to the central, approximately radial projection 20, which engages in corresponding receptacles 31 and 32 of the hopper 8. The extensions 20, 21 and 22 are at a distance a side by side and have approximately the same orientation. The corresponding recesses 30, 31 and 32 are at a suitable distance A next to each other. In Fig. 3 the embodiment of both the extension 20 and the corresponding receptacle 30 on the hopper 8 is shown. The extension 20 has approximately parallel to the plane of the cutting disc 10 extending opposite sides, both the side facing away from the hopper bottom 24 and the individual hopper facing top 25 are formed flat. The front end face 26 is designed rounded from the bottom 24 to the top 25, wherein the rounding is preferably provided part-cylindrical. The top 25 of the extension 20 is - shorter in the longitudinal direction - than the bottom 24. In this case, the end face 26 forms with the bottom 24 a leading, forward edge 37. All extensions 20, 21 and 22 are - like the receptacles 30, 31 and 32 - formed substantially the same.

Die Aufnahmen 30, 31 und 32 im Einfülltrichter 8 sind bevorzugt in dessen Gehäusedeckel 4 ausgebildet, der das der Messerkammer 3 zugewandte Ende 18 des Einfülltrichters 8 bildet. Die Aufnahmen 30, 31 und 32 liegen dabei im Bereich des Gehäusedeckels 4 nahe des unteren Randes 19 des Einfülltrichters 8 in einer Reihe mit Abstand A nebeneinander und sind zweckmäßig als nach außen offene Eingriffsöffnungen ausgebildet. Die Stirnseite 26 eines Fortsatzes liegt dabei - wie die Fig. 1 und 3 zeigen - als Teilfläche in der Außenfläche 27 des Gehäusedeckels 4. Die Stirnseiten 26 der Fortsätze 20, 21 und 22 sind somit von außen sichtbar und geben der formschlüssigen Anbindung des Einfülltrichters an das Grundgehäuse 2 eine ästhetische Gesamtprägung. Technisch leiten die bis zur Außenfläche 27 des Deckels 4 ragenden Fortsätze 20, 21 und 22 auf den Einfülltrichter 8 wirkende Kräfte direkt in das Gehäuse 23 der Messerkammer ein, wodurch eine stabile, widerstandsfähige Anbindung des Einfülltrichters 8 an die Messerkammer gewährleistet ist. Da die Krafteinleitung ausschließlich quer zum Fortsatz erfolgt, liegt die Belastung in der Ebene der Gehäusewand 33 des Deckels 4 bzw. des Einfülltrichters 8.The receptacles 30, 31 and 32 in the hopper 8 are preferably formed in the housing cover 4, which forms the knife chamber 3 facing the end 18 of the hopper 8. The receptacles 30, 31 and 32 lie in the region of the housing cover 4 near the lower edge 19 of the hopper 8 in a row with distance A next to each other and are expediently designed as outwardly open engagement openings. The end face 26 of an extension lies here - like the Fig. 1 and 3 The end faces 26 of the extensions 20, 21 and 22 are thus visible from the outside and give the positive connection of the hopper to the base housing 2 an overall aesthetic embossing. Technically, the protruding up to the outer surface 27 of the lid 4 projections 20, 21 and 22 acting on the hopper 8 forces directly into the housing 23 of the knife chamber, whereby a stable, resistant connection of the hopper 8 is ensured to the knife chamber. Since the introduction of force takes place exclusively transversely to the extension, the load lies in the plane of the housing wall 33 of the cover 4 or of the filling funnel 8.

Zweckmäßig sind die den Messern der Messerscheibe 10 zugeordneten Anschläge 16 und 17 an einem Einsatz 33 ausgebildet, der den unteren Teil des Einfülltrichters 8 bildet bzw. in diesen Einfülltrichter 8 eingeschoben ist und mit ihm eine Baueinheit bildet.Suitably, the knives 16 and 17 associated with the knives of the cutting disc 10 are formed on an insert 33, which forms the lower part of the hopper 8 and is inserted into this hopper 8 and forms with it a structural unit.

Die nach außen offenen Eingriffsöffnungen 30, 31 und 32 haben - wie die Fortsätze 20, 21, 23 - etwa quadratische bis rechteckförmige Gestalt. Die Fortsätze liegen etwa paßgenau in den Eingriffsöffnungen.The outwardly open engagement openings 30, 31 and 32 have - as the extensions 20, 21, 23 - approximately square to rectangular shape. The extensions are approximately in register in the engagement holes.

Der dem Einfülltrichter 8 entfernt liegende Rand 34 der Aufnahmeöffnung 30 ist als Anlagenstufe 36 gestaltet, die sich parallel zur Unterseite 24 des Fortsatzes 20 erstreckt und eine in Richtung des Fortsatzes 20 gemessene Länge 1 hat, die etwa der in gleicher Richtung gemessenen halben Länge der Unterseite 24 entspricht.The hopper 8 remote edge 34 of the receiving opening 30 is designed as a system stage 36, the extends parallel to the bottom 24 of the extension 20 and has a measured in the direction of the extension 20 length 1, which corresponds approximately to the measured in the same direction half length of the bottom 24.

In der in Fig. 1 gezeigten Verschlußstellung des Gehäusedeckels 4 mit dem Einfülltrichter 8 auf dem Grundgehäuse 2 greifen die drei Fortsätze 20, 21 und 22 etwa fingerartig in die zugeordneten durchgehenden Eingriffsöffnungen 30, 31 und 32 der Gehäusewand 39 des Einfülltrichters 8 bzw. dessen angeformtem Deckel 4 ein. Die Unterseiten 24 der fingerartigen, äußeren Fortsätze 20, 21 und 22 des Gehäuses 23 der Messerkammer 3 liegen flächig auf den jeweiligen Anlagestufen 36 auf, während der dem Einfülltrichter 8 naheliegende jeweilige obere Rand 35 der Eingriffsöffnungen 30, 31 und 32 auf der jeweiligen gerundeten Stirnseite 26 aufliegen. Dadurch ist eine sichere, formschlüssige Fixierung des Einfülltrichters 8 mit dem Gehäusedeckel 4 auf dem Gehäuse 23 der Messerkammer 3 gewährleistet.In the in Fig. 1 shown closure position of the housing cover 4 with the hopper 8 on the base housing 2 engage the three extensions 20, 21 and 22 approximately finger-like in the associated through engagement openings 30, 31 and 32 of the housing wall 39 of the hopper 8 and the molded lid 4 a. The undersides 24 of the finger-like, outer extensions 20, 21 and 22 of the housing 23 of the knife chamber 3 lie flat on the respective investment stages 36, while the hopper 8 near respective upper edge 35 of the engagement openings 30, 31 and 32 on the respective rounded end face 26 rest. As a result, a secure, positive fixation of the hopper 8 with the housing cover 4 on the housing 23 of the knife chamber 3 is ensured.

Der Gehäusedeckel 4 weist eine Verschlußeinrichtung 40 auf, die als Verschlußschraube mit einem Knebel oder in anderer geeigneter Weise ausgestaltet sein kann. Die Verschlußeinrichtung 40 liegt - bezogen auf die Rotationsachse 38 der Messerscheibe 10 - den Fortsätzen 20, 21 und 22 etwa diametral auf der anderen Seite der Messerkammer 3 gegenüber (Fig. 1) und ist dort gehäusefest festgelegt, insbesondere am Gehäuse 23 der Messerkammer 3 fixiert. Die Verschlußeinrichtung 40 liegt dabei mit einem Abstand v zu einer Verschwenkachse 29, um die der Verschlußdeckel 4 mit dem Einfülltrichter 8 verschwenkt werden kann.The housing cover 4 has a closure device 40, which can be designed as a screw plug with a gag or in another suitable manner. The closure device 40 is - relative to the axis of rotation 38 of the cutter disk 10 - the extensions 20, 21 and 22 approximately diametrically opposite on the other side of the blade chamber 3 ( Fig. 1 ) and is fixed to the housing there, in particular fixed to the housing 23 of the knife chamber 3. The closure device 40 is at a distance v to a pivot axis 29 about which the closure lid 4 can be pivoted to the hopper 8.

Ausgehend von einer Verschlußstellung des Deckels 4, wie er in den Fig. 1 und 3 gezeigt ist, wird die Verschlußeinrichtung 40 gelöst und der Deckel 4 mit dem Einfülltrichter 8 in Pfeilrichtung 28 um die Verschwenkachse 29 verschwenkt, die quer zu den Fortsätzen 20, 21 und 22 liegt. Bei dieser in Pfeilrichtung 28 ausgeführten Verschwenkbewegung (Öffnungsbewegung) gleitet der obere Rand 35 der Eingriffsöffnungen 30, 31 und 32 auf den gerundeten Stirnseiten 26 der Fortsätze 20, 21 und 22 nach unten, wodurch sich eine Schwenkbewegung um die gedachte Verschwenkachse 29 ergibt, die etwas unterhalb der Fortsätze 20, 21 und 22 liegt (Fig. 1, 3). Bei dieser Schwenkbewegung heben die jeweiligen Unterseiten 24 der Fortsätze 20, 21 und 22 von den Anlagestufen 36 ab, so daß der Gehäusedeckel 4 mit dem Einfülltrichter 8 von den Fortsätzen 20, 21 und 22 freikommt, um abgenommen zu werden. Bevorzugt ist die Rundung der Stirnseite 26 derart vorgesehen, daß die Zylinderachse der teilzylindrischen Fläche parallel zur oder etwa deckungsgleich mit der Verschwenkachse 29 liegt.Starting from a closed position of the lid 4, as in the Fig. 1 and 3 is shown, the closure device 40 is released and the lid 4 is pivoted with the hopper 8 in the direction of arrow 28 about the pivot axis 29, which is transverse to the extensions 20, 21 and 22. In this executed in the direction of arrow 28 pivoting movement (opening movement) slides the upper edge 35 of the engaging holes 30, 31 and 32 on the rounded end faces 26 of the extensions 20, 21 and 22 down, resulting in a pivotal movement about the imaginary pivot axis 29, the something below the extensions 20, 21 and 22 lies ( Fig. 1 . 3 ). During this pivoting movement, the respective undersides 24 of the extensions 20, 21 and 22 lift off from the abutment steps 36, so that the housing cover 4 with the hopper 8 of the extensions 20, 21 and 22 is released to be removed. Preferably, the rounding of the end face 26 is provided such that the cylinder axis of the part-cylindrical surface is parallel to or approximately congruent with the pivot axis 29.

Zum Aufsetzen des Verschlußdeckels 4 mit dem Einfülltrichter 8 müssen die Eingriffsöffnungen 30, 31 und 32 der Gehäusewand 39 auf die Fortsätze 20, 21 und 22 aufgefädelt werden. Hierzu wird der Deckel 4 derart geführt, daß die Anlagestufen 36 der Eingriffsöffnungen 30, 31 und 32 an die Kanten 37 angesetzt werden, die an der Stoßstelle der jeweils unteren Flachseite 24 des Fortsatzes 20, 21 und 22 und dessen gerundeter Stirnseite 26 gebildetet ist. Sobald die Anlagestufen 36 der Eingriffsöffnungen 30, 31 und 32 an den Kanten 37 der Fortsätze 20, 21 und 22 aufliegen, kann der Deckel 4 mit dem Einfülltrichter 8 entgegen der Pfeilrichtung 28 verschwenkt werden, wobei sich aufgrund der Führung der oberen Kante 35 auf den Stirnseiten 26 der Fortsätze 20, 21 und 22 ein paßgenaues Einschieben der Fortsätze in die Eingriffsöffnungen 30, 31 und 32 ergibt, wodurch ein fester, formschlüssiger Halt gegeben ist. Nach Schließen der Verschlußeinrichtung 40 durch Festschrauben, durch einen Schnellverschluß oder dgl. sitzt der Deckel 4 auf dem Grundgehäuse 2 gehäusefest fest, so daß alle auf den Einfülltrichter 8 oder den Deckel 4 wirkenden Kräfte sicher in das Grundgehäuse 2 bzw. das Gehäuse 23 der Messerkammer 3 abgeleitet werden.For placing the closure lid 4 with the hopper 8, the engagement openings 30, 31 and 32 of the housing wall 39 must be threaded onto the extensions 20, 21 and 22. For this purpose, the lid 4 is guided such that the investment levels 36 of the engagement openings 30, 31 and 32 are attached to the edges 37, at the junction of the respective lower flat side 24 of the extension 20, 21 and 22nd and its rounded end face 26 is formed. Once the investment levels 36 of the engagement holes 30, 31 and 32 rest on the edges 37 of the extensions 20, 21 and 22, the lid 4 can be pivoted with the hopper 8 opposite to the direction of arrow 28, which due to the guidance of the upper edge 35 on the End faces 26 of the extensions 20, 21 and 22, an exact insertion of the projections into the engagement openings 30, 31 and 32 results, whereby a solid, positive fit is given. After closing the closure device 40 by screwing, by a quick release or the like. Sitting the lid 4 fixed to the housing 2 fixed to the housing, so that all forces acting on the hopper 8 or the lid 4 forces safely into the base housing 2 and the housing 23 of the knife chamber 3 are derived.

Die Erfindung ist insbesondere für einen Häcksler vorgesehen, bei dem die Messerkammer 3 aus einem metallischen Material und das Gehäuse 2 ebenso wie der Deckel 4 mit dem Einfülltrichter 8 aus einem leichteren Material wie Kunststoff oder dgl. gebildet ist. Die formschlüssige Festlegung des Deckels 4 mit dem Einfülltrichter 8 über die in Eingriffsöffnungen des Deckels fingerartig eingreifende Fortsätze gewährleistet eine stabile, widerstandsfähige Verbindung zwischen dem aus Metall bestehenden Gehäuse 23 der Messerkammer 3 einerseits und dem aus Kunststoff bestehenden Einfülltrichter 8 bzw. dem Deckel 4 andererseits.The invention is particularly intended for a shredder in which the knife chamber 3 is formed of a metallic material and the housing 2 as well as the lid 4 with the hopper 8 of a lighter material such as plastic or the like. The positive fixing of the lid 4 with the hopper 8 via the engaging openings in the lid finger-engaging projections ensures a stable, resistant connection between the existing metal housing 23 of the blade chamber 3 on the one hand and the existing plastic hopper 8 and the cover 4 on the other.

Claims (12)

  1. A shredder for the comminution of organic material, in particular a garden shredder for branches, brushwood, etc., consisting of a blade chamber (3) with a rotating cutting disc (10) to which is affixed at least one shredder blade (12) with approximately radially extending cutting edges (15) which co-operate with a stop (16) fixed to the housing in order to comminute the material, and with a feeding funnel (8) for feeding the material into the blade chamber (3),
    characterised in that
    the blade chamber (3) has an outer finger-like extension (20, 21, 22) which engages in a receiver (30, 31, 32) in the housing wall (39) of the feeding funnel (8) and fixes the feeding funnel (8) to the blade chamber (3) in a positive connection at right angles to the length of the extension (20, 21, 22), in its locked position the feeding funnel (8) being secured to the housing by a locking device (40) and thus fixed in relation to the length of the extension (20, 21, 22) and it being possible to pivot the feeding funnel (8) from the locked position into an open position about an axis of pivoting (29) located at right angles to the extension (20, 21, 22) once the locking device (40) has been released.
  2. A shredder in accordance with claim 1,
    characterised in that
    the locking device (40) is located a certain distance (v) from the axis of pivoting (29).
  3. A shredder in accordance with claim 1 or 2,
    characterised in that
    the extension (20, 21, 22) is provided on one side of the blade chamber (3) and the locking device (40) is provided on the other, approximately diametrically opposite side of the blade chamber (3).
  4. A shredder in accordance with one of claims 1 to 3,
    characterised in that
    the blade chamber (3) has a plurality of extensions (20, 21, 22) positioned adjacent to one another laterally in a row a certain distance (a) apart.
  5. A shredder in accordance with one of claims 1 to 4,
    characterised in that
    one extension (20, 21, 22) has an essentially flat underside (24) which faces away from the feeding funnel (8) and has a preferably partially cylindrically rounded front face (26).
  6. A shredder in accordance with claim 5,
    characterised in that
    the cylinder axis of the partially cylindrically rounded front face (26) lies approximately parallel to the axis of pivoting (29).
  7. A shredder in accordance with one of claims 1 to 6,
    characterised in that
    the receiver (30, 31, 32) takes the form of an engaging opening in the housing wall (39) which is open to the outside.
  8. A shredder in accordance with claim 7,
    characterised in that
    the front face (26) of one extension (20, 21, 22) takes the form of part of the external face (27) of the housing wall (39) of the feeding funnel (8).
  9. A shredder in accordance with claim 7 or 8,
    characterised in that
    the edge (34) of the engaging opening (30, 31, 32) facing away from the feeding funnel (8) has a bearing step (36) for the flat underside (24) of the extension (20, 21, 22).
  10. A shredder in accordance with one of claims 1 to 9,
    characterised in that
    the end (18) of the feeding funnel (8) facing the blade chamber (3) is designed as a housing cover (4) which closes the blade chamber (3) and preferably forms part of a housing (5) for the ejector opening (6).
  11. A shredder in accordance with claim 10,
    characterised in that
    the through engaging openings (30, 31, 32) are provided in the area of the housing cover (4), preferably near the lower edge (19) of the feeding funnel (8).
  12. A shredder in accordance with one of claims 1 to 11,
    characterised in that
    the feeding funnel (8) with the cover (4) is made of a first material, preferably plastic, and the blade chamber (3) is made of a second material, preferably metal.
EP04029937A 2003-12-24 2004-12-17 Shredder for the comminution of organic material Active EP1550365B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE20320045U 2003-12-24
DE20320045U DE20320045U1 (en) 2003-12-24 2003-12-24 Chopper for shredding organic material, especially garden choppers

Publications (2)

Publication Number Publication Date
EP1550365A1 EP1550365A1 (en) 2005-07-06
EP1550365B1 true EP1550365B1 (en) 2008-09-10

Family

ID=31984907

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04029937A Active EP1550365B1 (en) 2003-12-24 2004-12-17 Shredder for the comminution of organic material

Country Status (4)

Country Link
EP (1) EP1550365B1 (en)
AT (1) ATE407553T1 (en)
DE (2) DE20320045U1 (en)
ES (1) ES2314332T3 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7431231B1 (en) 2006-12-06 2008-10-07 Tong Myong Saiki Portable shredding device

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3593930A (en) * 1970-09-11 1971-07-20 Red Cross Mfg Corp The Shredder
GB2079625A (en) * 1979-12-04 1982-01-27 Rover Mowers Pty Ltd Electric shredder
DE4328687A1 (en) * 1993-08-26 1995-03-02 Udo Adam Gmbh Maschinenfabrik Shredder operating by the rotary-shears principle
FR2749193B3 (en) * 1996-06-03 1998-07-31 Deboffles Regis Pierre Arthur AGRICULTURAL PRODUCTS GRINDING MACHINE

Also Published As

Publication number Publication date
ATE407553T1 (en) 2008-09-15
EP1550365A1 (en) 2005-07-06
ES2314332T3 (en) 2009-03-16
DE502004008019D1 (en) 2008-10-23
DE20320045U1 (en) 2004-03-04

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