EP1749577A1 - Device for disintegrating materials - Google Patents

Device for disintegrating materials Download PDF

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Publication number
EP1749577A1
EP1749577A1 EP06015965A EP06015965A EP1749577A1 EP 1749577 A1 EP1749577 A1 EP 1749577A1 EP 06015965 A EP06015965 A EP 06015965A EP 06015965 A EP06015965 A EP 06015965A EP 1749577 A1 EP1749577 A1 EP 1749577A1
Authority
EP
European Patent Office
Prior art keywords
ring
shaft
rotor
clamping
disc springs
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.)
Withdrawn
Application number
EP06015965A
Other languages
German (de)
French (fr)
Inventor
Gerhard Gerg
Andreas Rest
Rupert Schnöll
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.)
Unterwurzacher Patentverwertungsgesellschaft Mbh
Original Assignee
Unterwurzacher Patentverwertungsgesellschaft Mbh
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 Unterwurzacher Patentverwertungsgesellschaft Mbh filed Critical Unterwurzacher Patentverwertungsgesellschaft Mbh
Publication of EP1749577A1 publication Critical patent/EP1749577A1/en
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • B02C18/146—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within horizontal containers with a rotor comprising a plurality of axially contiguous disc-like segments each having at least one radially extending cutting element
    • 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
    • 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
    • B02C18/182—Disc-shaped knives

Definitions

  • the invention relates to a device for comminuting material, comprising at least one comminution rotor, which has arranged on a driven shaft cutting discs, which are axially pressed against each other by a clamping device, wherein the clamping device has a supported on the driven shaft ring, provided on the plurality of clamping elements are.
  • Shredding rotors constructed from cutting discs require axial preload to prevent contaminants from entering between the cutting discs.
  • This can, for example, according to the US 5,360,283 be achieved by a ring of screws, which are arranged in the ring and press against a lens of the crushing rotor. Since a slight deflection of the shaft can not be prevented by the cutting forces occurring during operation despite the bias, penetrating aggressive substances lead by corrosion to a lowering of the bias voltage and penetrating impurities to increase, with progressive corrosion creates additional space for impurities. Both cases lead to premature damage of the crushing rotors.
  • the ring is axially supported by a tensioning device on the shaft or circumferential grooves of the shaft.
  • the invention has therefore set itself the task of avoiding these disadvantages and achieves this by the fact that the clamping elements in the axial direction against the crushing rotor oppressive, elastic contact heads are assigned.
  • the elastic preload achievable thereby at least substantially compensates for the lengthening or shortening of the cutting tool, and the preload in the comminution rotor therefore remains substantially longer and almost constant, as a result of which the periods between maintenance operations are substantially increased.
  • the elastic bearing heads are preferably arranged on the same side of the rotor as the clamping elements, but may also be provided at the second end of the rotor, for example on a second support ring and press against the rotor.
  • the number of clamping elements need not be equal to the number of contact heads, although the same number preferred is provided to bias each clamping element individually. As a result, a different compensation over the circumference of the comminution rotor can be achieved.
  • each contact head is achieved by a package of disc springs, which is provided at the end of a bolt arranged in the ring.
  • the ring is held against rotation on the shaft. This can be achieved for example by the fact that the shaft has a thread in the region of the ring, and the ring is screwed onto the shaft and held in rotation by means of a lock nut.
  • an additional locking ring which has grooves in the shaft and the ring and / or the lock nut engaging projections.
  • the non-rotatable support of the ring on the shaft can be achieved in that the shaft is tapered in the region of the ring and forms an annular shoulder, and the ring is rotatably held by a ring of axially parallel screws on the annular shoulder.
  • the screw heads are preferably covered by a cover or the like.
  • a comminution device has a cutting unit with four comminution rotors 2, which each comprise a number of cutting disks 4 arranged on a shaft 3.
  • the crushing rotors 2 are mounted in bearings 6 of the frame 1 and are driven by motors 5.
  • a clamping device 11 is provided which has a plurality of individually and independently prestressable clamping elements 13.
  • the clamping device 11 comprises a screwed onto the shaft end ring 12, which is rotatably held, for example by a securing ring 10 and a lock nut 9.
  • the ring 12 has a ring of threaded holes, in each of which a bolt 14 is screwed, which in turn is secured in its position by a locknut 17.
  • a flange 18 and a groove are provided, into which a locking ring 16 is inserted.
  • a package of, for example, six disc springs 15 is arranged, which form a pressing against a cover plate 8 of the crushing rotor 2 contact head of the bolt 14, as can be seen in particular from Fig. 4.
  • the clamping elements 13 are individually mounted with a medium elastic bias from which then the disc springs 15 can largely compensate for any change in the axial length and the bias of the crushing rotor 2.
  • the shaft 3 has a region 19 of reduced diameter, so that an axial stop is formed in the form of an annular shoulder.
  • the ring 12 is mounted on the area 19 and has a second ring of holes, which are aligned with threaded holes in the annular shoulder.
  • a lock nut 9 and a locking ring 10 may be provided which cover the heads of the screws 20 in this embodiment, but are not required for the fixation of the ring 12.

Abstract

The device for the breaking down of material has at least one grinding rotor (2) which has cutting discs (4) installed on a driven shaft (3) and axially pressed together by a tensioning device (11). The tensioning device has a ring supported on the driven rotor and provided with several tensioning elements which have elastic contact heads pressing in the axial direction against the grinding rotor. A contact head is provided for each tensioning element and comprises a packet of disc springs.

Description

Die Erfindung betrifft eine Vorrichtung zum Zerkleinern von Material, mit mindestens einem Zerkleinerungsrotor, der auf einer angetriebenen Welle angeordnete Schneidscheiben aufweist, die durch eine Spanneinrichtung axial gegeneinander gepresst werden, wobei die Spanneinrichtung einen auf der angetriebenen Welle abgestützten Ring aufweist, an dem mehrere Spannelemente vorgesehen sind.The invention relates to a device for comminuting material, comprising at least one comminution rotor, which has arranged on a driven shaft cutting discs, which are axially pressed against each other by a clamping device, wherein the clamping device has a supported on the driven shaft ring, provided on the plurality of clamping elements are.

Aus Schneidscheiben aufgebaute Zerkleinerungsrotoren bedürfen einer axialen Vorspannung, durch die verhindert werden soll, dass Verunreinigungen zwischen die Schneidscheiben eindringen können. Diese kann beispielsweise entsprechend der US 5,360,283 durch einen Kranz von Stellschrauben erreicht werden, die im Ring angeordnet sind und gegen eine Abschlussscheibe des Zerkleinerungsrotors drücken. Da eine geringfügige Durchbiegung der Welle durch die im Betrieb auftretenden Schnittkräfte trotz der Vorspannung nicht verhindert werden kann, führen eindringende aggressive Stoffe durch Korrosion zu einer Erniedrigung der Vorspannung und eindringende Verunreinigungen zu deren Erhöhung, wobei fortschreitende Korrosion zusätzlichen Raum für Verunreinigungen schafft. Beide Fälle führen zu frühzeitigen Beschädigungen der Zerkleinerungsrotoren. Der Ring wird durch eine Spannvorrichtung an der Welle bzw. an Umfangsnuten der Welle axial abgestützt.Shredding rotors constructed from cutting discs require axial preload to prevent contaminants from entering between the cutting discs. This can, for example, according to the US 5,360,283 be achieved by a ring of screws, which are arranged in the ring and press against a lens of the crushing rotor. Since a slight deflection of the shaft can not be prevented by the cutting forces occurring during operation despite the bias, penetrating aggressive substances lead by corrosion to a lowering of the bias voltage and penetrating impurities to increase, with progressive corrosion creates additional space for impurities. Both cases lead to premature damage of the crushing rotors. The ring is axially supported by a tensioning device on the shaft or circumferential grooves of the shaft.

Die Erfindung hat es sich daher zur Aufgabe gestellt, diese Nachteile zu vermeiden und erreicht dies dadurch, dass den Spannelementen in axialer Richtung gegen den Zerkleinerungsrotor drückende, elastische Anlageköpfe zugeordnet sind.The invention has therefore set itself the task of avoiding these disadvantages and achieves this by the fact that the clamping elements in the axial direction against the crushing rotor oppressive, elastic contact heads are assigned.

Die dadurch erzielbare elastische Vorspannung gleicht die Verlängerung oder Verkürzung des Schneidwerkzeuges zumindest weitgehend aus und die Vorspannung im Zerkleinerungsrotor bleibt daher wesentlich länger erhalten und beinahe konstant, wodurch die Zeiträume zwischen Wartungsarbeiten wesentlich vergrößert werden.The elastic preload achievable thereby at least substantially compensates for the lengthening or shortening of the cutting tool, and the preload in the comminution rotor therefore remains substantially longer and almost constant, as a result of which the periods between maintenance operations are substantially increased.

Die elastischen Anlageköpfe sind bevorzugt an derselben Seite des Rotors wie die Spannelemente angeordnet, können aber auch am zweiten Ende des Rotors, beispielsweise an einem zweiten Stützring vorgesehen sein und gegen den Rotor drücken. Insbesondere in diesem Fall muss die Anzahl der Spannelemente nicht gleich der Anzahl der Anlageköpfe sein, wenngleich auch dieselbe Anzahl bevorzugt vorgesehen ist, um jedes Spannelement einzeln vorspannen zu können. Dadurch kann auch ein unterschiedlicher Ausgleich über den Umfang des Zerkleinerungsrotors erzielt werden.The elastic bearing heads are preferably arranged on the same side of the rotor as the clamping elements, but may also be provided at the second end of the rotor, for example on a second support ring and press against the rotor. In particular, in this case, the number of clamping elements need not be equal to the number of contact heads, although the same number preferred is provided to bias each clamping element individually. As a result, a different compensation over the circumference of the comminution rotor can be achieved.

In besonders einfacher Weise wird die Elastizität jedes Anlagekopfes dabei durch ein Paket an Tellerfedern erreicht, das am Ende eines im Ring angeordneten Bolzens vorgesehen ist.In a particularly simple manner, the elasticity of each contact head is achieved by a package of disc springs, which is provided at the end of a bolt arranged in the ring.

Selbstverständlich sind auch andere Federelemente denkbar, beispielsweise Schraubenfedern od. dgl.Of course, other spring elements are conceivable, for example, coil springs od. Like.

In einer weiteren bevorzugten Ausführung ist vorgesehen, dass der Ring an der Welle drehfest gehalten ist. Dies kann beispielsweise dadurch erreicht werden, dass die Welle im Bereich des Ringes ein Gewinde aufweist, und der Ring auf die Welle aufgeschraubt und mittels einer Kontermutter drehfest gehalten ist.In a further preferred embodiment, it is provided that the ring is held against rotation on the shaft. This can be achieved for example by the fact that the shaft has a thread in the region of the ring, and the ring is screwed onto the shaft and held in rotation by means of a lock nut.

Zwischen der Kontermutter und dem Ring kann noch ein zusätzlicher Sicherungsring angeordnet werden, der in Nuten der Welle und des Ringes und/oder der Kontermutter eingreifende Vorsprünge aufweist.Between the lock nut and the ring can still be arranged an additional locking ring which has grooves in the shaft and the ring and / or the lock nut engaging projections.

In einer weiteren Ausführung kann der drehfeste Halt des Ringes an der Welle dadurch erreicht werden, dass die Welle im Bereich des Ringes verjüngt ist und eine Ringschulter bildet, und der Ring durch einen Kranz von achsparallelen Schrauben an der Ringschulter drehfest gehalten ist. Die Schraubenköpfe sind bevorzugt durch eine Abdeckung oder dergleichen abgedeckt.In another embodiment, the non-rotatable support of the ring on the shaft can be achieved in that the shaft is tapered in the region of the ring and forms an annular shoulder, and the ring is rotatably held by a ring of axially parallel screws on the annular shoulder. The screw heads are preferably covered by a cover or the like.

Nachstehend wird nun die Erfindung anhand der Figuren der beiliegenden Zeichnung näher beschrieben. Darin zeigt:

Fig.
1 eine schematische Ansicht einer mehrachslgen Zerkleinerungsvorrichtung, wobei am Ende jeder Welle eine Spanneinrichtung vorgesehen ist,
Fig. 2
Bestandteile der Spanneinrichtung in Explosionsdarstellung,
Fig. 3
einen Axialschnitt durch das Ende der Welle mit der Spanneinrichtung,
Fig. 4
vergrößert ein Detail aus Fig. 3, und
Fig. 5
einen Axialschnitt durch das Ende der Welle einer zweiten Ausführung.
The invention will now be described in more detail with reference to the figures of the accompanying drawings. It shows:
FIG.
1 is a schematic view of a multi-axial crushing device, wherein a tensioning device is provided at the end of each shaft,
Fig. 2
Components of the clamping device in exploded view,
Fig. 3
an axial section through the end of the shaft with the clamping device,
Fig. 4
enlarges a detail of Fig. 3, and
Fig. 5
an axial section through the end of the shaft of a second embodiment.

Eine Zerkleinerungsvorrichtung gemäß Fig. 1 weist ein Schneidwerk mit vier Zerkleinerungsrotoren 2 auf, die jeweils eine Anzahl von auf einer Welle 3 angeordneten Schneidscheiben 4 umfassen. Die Zerkleinerungsrotoren 2 sind in Lagern 6 des Gestells 1 gelagert und werden von Motoren 5 angetrieben. Zumindest am in der Zeichnung sichtbaren Ende jeder Welle 3 ist eine Spanneinrichtung 11 vorgesehen, die mehrere einzeln und unabhängig voneinander vorspannbare Spannelemente 13 aufweist.A comminution device according to FIG. 1 has a cutting unit with four comminution rotors 2, which each comprise a number of cutting disks 4 arranged on a shaft 3. The crushing rotors 2 are mounted in bearings 6 of the frame 1 and are driven by motors 5. At least on the end visible in the drawing of each shaft 3, a clamping device 11 is provided which has a plurality of individually and independently prestressable clamping elements 13.

Wie aus Fig. 3 ersichtlich ist, in der das Ende des Zerkleinerungsrotors durch strichlierte Linien angedeutet ist, umfasst die Spanneinrichtung 11 einen auf das Wellenende aufgeschraubten Ring 12, der beispielsweise durch einen Sicherungsring 10 und eine Kontermutter 9 drehfest gehalten ist. Der Ring 12 weist einen Kranz von Gewindebohrungen auf, in die jeweils ein Bolzen 14 eingeschraubt ist, der in seiner Position wiederum durch eine Gegenmutter 17 gesichert ist. Am rotorseitigen, aus dem Ring 12 vorstehenden Bereich des Bolzens 14 sind ein Flansch 18 und eine Nut vorgesehen, in die ein Sicherungsring 16 eingesetzt ist. Zwischen dem Flansch 18 und dem Sicherungsring 16 ist ein Paket von beispielsweise sechs Tellerfedern 15 angeordnet, die einen gegen eine Abschlussscheibe 8 des Zerkleinerungsrotors 2 drückenden Anlagekopf des Bolzens 14 bilden, wie vor allem aus Fig. 4 ersichtlich ist.As can be seen from Fig. 3, in which the end of the crushing rotor is indicated by dashed lines, the clamping device 11 comprises a screwed onto the shaft end ring 12, which is rotatably held, for example by a securing ring 10 and a lock nut 9. The ring 12 has a ring of threaded holes, in each of which a bolt 14 is screwed, which in turn is secured in its position by a locknut 17. On the rotor side, from the ring 12 projecting portion of the bolt 14, a flange 18 and a groove are provided, into which a locking ring 16 is inserted. Between the flange 18 and the locking ring 16, a package of, for example, six disc springs 15 is arranged, which form a pressing against a cover plate 8 of the crushing rotor 2 contact head of the bolt 14, as can be seen in particular from Fig. 4.

Bei der Erstmontage der Zerkleinerungsvorrichtung werden die Spannelemente 13 einzeln mit einer mittleren elastischen Vorspannung montiert, aus der dann die Tellerfedern 15 jede Änderung der axialen Länge und der Vorspannung des Zerkleinerungsrotors 2 weitgehend ausgleichen können.In the initial assembly of the crushing device, the clamping elements 13 are individually mounted with a medium elastic bias from which then the disc springs 15 can largely compensate for any change in the axial length and the bias of the crushing rotor 2.

In der in Fig. 5 gezeigten Ausführung weist die Welle 3 einen Bereich 19 mit verringertem Durchmesser auf, sodass ein axialer Anschlag in Form einer Ringschulter gebildet ist. Der Ring 12 ist auf den Bereich 19 aufgesteckt und weist einen zweiten Kranz von Bohrungen auf, die mit Gewindebohrungen in der Ringschulter fluchten. Die verdrehfeste Fixierung des Ringes 12 auf der Welle 3 erfolgt mittels Schrauben 20, die achsparallel angeordnet werden. Auch hier können eine Kontermutter 9 und ein Sicherungsring 10 vorgesehen sein, die in dieser Ausführung die Köpfe der Schrauben 20 abdecken, aber nicht für die Fixierung des Ringes 12 benötigt werden.In the embodiment shown in Fig. 5, the shaft 3 has a region 19 of reduced diameter, so that an axial stop is formed in the form of an annular shoulder. The ring 12 is mounted on the area 19 and has a second ring of holes, which are aligned with threaded holes in the annular shoulder. The rotationally fixed fixing of the ring 12 on the shaft 3 by means of screws 20 which are arranged axially parallel. Again, a lock nut 9 and a locking ring 10 may be provided which cover the heads of the screws 20 in this embodiment, but are not required for the fixation of the ring 12.

Claims (8)

Vorrichtung zum Zerkleinern von Material, mit mindestens einem Zerkleinerungsrotor (2), der auf einer angetriebenen Welle (3) angeordnete Schneidscheiben (4) aufweist, die durch eine Spanneinrichtung (11) axial gegeneinander gepresst werden, wobei die Spanneinrichtung (11) einen auf der angetriebenen Welle (3) abgestützten Ring (12) aufweist, an dem mehrere Spannelemente (13) vorgesehen sind, dadurch gekennzeichnet, dass den Spannelementen (13) in axialer Richtung gegen den Zerkleinerungsrotor (2) drückende, elastische Anlageköpfe zugeordnet sind.Apparatus for comminuting material, comprising at least one comminution rotor (2) having cutting disks (4) arranged on a driven shaft (3), which are axially pressed against one another by a clamping device (11), wherein the clamping device (11) has one on the driven shaft (3) supported ring (12) on which a plurality of clamping elements (13) are provided, characterized in that the clamping elements (13) in the axial direction against the crushing rotor (2) pressing, elastic contact heads are assigned. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass jedem Spannelement (13) ein Anfagekopf zugeordnet ist.Apparatus according to claim 1, characterized in that each clamping element (13) is associated with an Anfagekopf. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Anlagekopf ein Paket von Tellerfedern (15) umfasst.Apparatus according to claim 1 or 2, characterized in that the contact head comprises a package of disc springs (15). Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass jedes Spannelement (13) einen Schraubbolzen (14) aufweist, auf dem die Tellerfedern (15) aufgefädelt sind.Apparatus according to claim 3, characterized in that each clamping element (13) has a screw bolt (14) on which the disc springs (15) are threaded. Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass der Ring (12) an der Welle (3) drehfest gehalten ist.Device according to one of claims 1 to 4, characterized in that the ring (12) is held against rotation on the shaft (3). Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, dass die Welle (3) im Bereich des Ringes (12) ein Gewinde aufweist, und der Ring (12) auf die Welle (3) aufgeschraubt und mittels einer Kontermutter (9) drehfest gehalten ist.Apparatus according to claim 5, characterized in that the shaft (3) in the region of the ring (12) has a thread, and the ring (12) screwed onto the shaft (3) and by means of a lock nut (9) is held against rotation. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass zwischen dem Ring (12) und der Kontermutter (9) ein Sicherungsring (10) angeordnet ist.Apparatus according to claim 1, characterized in that between the ring (12) and the lock nut (9) a locking ring (10) is arranged. Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, dass die Welle (3) im Bereich des Ringes (12) verjüngt ist und eine Ringschulter bildet, und der Ring (12) durch einen Kranz von achsparallelen Schrauben (20) an der Ringschulter drehfest gehalten ist.Apparatus according to claim 5, characterized in that the shaft (3) is tapered in the region of the ring (12) and forms an annular shoulder, and the ring (12) by a ring of axially parallel screws (20) is rotatably held on the annular shoulder.
EP06015965A 2005-08-02 2006-08-01 Device for disintegrating materials Withdrawn EP1749577A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200520012137 DE202005012137U1 (en) 2005-08-02 2005-08-02 Device for breaking down of material has tensioning device with ring supported on driven rotor and provided with several tensioning elements which have elastic contact heads pressing in axial direction against grinding rotor

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EP1749577A1 true EP1749577A1 (en) 2007-02-07

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20210033140A1 (en) * 2019-08-02 2021-02-04 Ssi Shredding Systems, Inc. Locking system for industrial machine and method for operating the same

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202005012137U1 (en) * 2005-08-02 2005-10-13 Unterwurzacher Patentverwertungsgesellschaft M.B.H. Device for breaking down of material has tensioning device with ring supported on driven rotor and provided with several tensioning elements which have elastic contact heads pressing in axial direction against grinding rotor

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4136989A (en) * 1977-05-18 1979-01-30 Bianco Romolo P Expandable annular cam-type locking device for a shaft
US4316678A (en) * 1979-10-05 1982-02-23 The United States Of America As Represented By The Secretary Of The Army Means for securing two elements against relative axial movement
US5360283A (en) 1992-09-24 1994-11-01 Shredding Systems, Inc. Preload-clampnut device
DE202005012137U1 (en) * 2005-08-02 2005-10-13 Unterwurzacher Patentverwertungsgesellschaft M.B.H. Device for breaking down of material has tensioning device with ring supported on driven rotor and provided with several tensioning elements which have elastic contact heads pressing in axial direction against grinding rotor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4136989A (en) * 1977-05-18 1979-01-30 Bianco Romolo P Expandable annular cam-type locking device for a shaft
US4316678A (en) * 1979-10-05 1982-02-23 The United States Of America As Represented By The Secretary Of The Army Means for securing two elements against relative axial movement
US5360283A (en) 1992-09-24 1994-11-01 Shredding Systems, Inc. Preload-clampnut device
DE202005012137U1 (en) * 2005-08-02 2005-10-13 Unterwurzacher Patentverwertungsgesellschaft M.B.H. Device for breaking down of material has tensioning device with ring supported on driven rotor and provided with several tensioning elements which have elastic contact heads pressing in axial direction against grinding rotor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20210033140A1 (en) * 2019-08-02 2021-02-04 Ssi Shredding Systems, Inc. Locking system for industrial machine and method for operating the same
US11708849B2 (en) * 2019-08-02 2023-07-25 Ssi Shredding Systems, Inc. Locking system for industrial machine and method for operating the same

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