EP2624959B1 - Hammer with a divided hammer tip - Google Patents

Hammer with a divided hammer tip Download PDF

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Publication number
EP2624959B1
EP2624959B1 EP11779576.5A EP11779576A EP2624959B1 EP 2624959 B1 EP2624959 B1 EP 2624959B1 EP 11779576 A EP11779576 A EP 11779576A EP 2624959 B1 EP2624959 B1 EP 2624959B1
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EP
European Patent Office
Prior art keywords
lower body
blade
mallet
cutting
support
Prior art date
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Active
Application number
EP11779576.5A
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German (de)
French (fr)
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EP2624959A2 (en
Inventor
Johann Doppstadt
Horst Berger
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Doppstadt Familienholding GmbH
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Doppstadt Familienholding GmbH
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Publication of EP2624959A2 publication Critical patent/EP2624959A2/en
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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
    • B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
    • B02C13/26—Details
    • B02C13/28—Shape or construction of beater elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
    • B02C18/16—Details
    • B02C18/18—Knives; Mountings thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
    • B02C13/26—Details
    • B02C13/28—Shape or construction of beater elements
    • B02C13/2804—Shape or construction of beater elements the beater elements being rigidly connected to the rotor

Definitions

  • the invention relates to a flail for crushing devices with a rotor or at least one shaft, on or on which the flail is fastened.
  • Crushing devices which are equipped with at least one mallet, which are arranged on a rotor or on a rotating shaft in the comminution device and which cooperate for comminuting the material to be comminuted with a counter-blade arranged in the device.
  • the problem with the maintenance of equipped with flail shredders is usually that the blades or the blade carrier wear very quickly and thereby at least the blades or the blade carrier must be changed at regular intervals. The change of the blades is a time-consuming affair, which leads to prolonged downtime of the crushing device.
  • Schlegel the Applicant are known, which are characterized in that a lower body and a cutting head form-locking cooperate with each other to form a flail.
  • this Schlegel still has the disadvantage that the material content of the cutting head or cutting body is much too high compared to the total material content of the beater. This results in that the preparation of the flails of the prior art, of course, is significantly more complex and in particular cause the spare parts for the Schlegel overall still too high costs.
  • the DE 20 2006 019 687 U1 shows a flail assembly for comminuting materials, wherein the flail has a base body to which a tooth-shaped impact and / or cutting element is detachably arranged.
  • a hardened cutting insert is provided on the cutting edge of the tooth-shaped striking and / or cutting element.
  • the DE 20 2007 013 269 U1 shows a flail, which consists of a lower body and a cutting head, wherein in the lower body arranged in the interior of the lower body recess is provided, in which at least one provided on the cutting insert connection lug engages positively.
  • the DE 20 2005 009 859 U1 shows a knife carrier for crushing devices, which consists of a fixable on a crushing roller or the like tooth body and at least one knife, the knife is positively arranged on the tooth body arrangeable.
  • the invention is based on the aforementioned prior art and proposes a hammer for crushing devices with a rotor or at least one shaft, on or to which the flail is fastened, consisting of one with a through hole provided lower body, wherein the through hole is provided for connection of the bracket with the rotor or the shaft, and at least one cutting body, wherein the at least one cutting body with the lower body is detachably / firmly connected, and the Schlegel is characterized in that the cutting body of at least two parts is formed. Due to the two-part design of the cutting body, it is now possible to keep the proportion of material of the wearing part significantly lower than was previously known in the prior art. Compared to the previous solutions, of course, the overall maintenance is significantly cheaper.
  • the cutting body can be aligned universally to different cutting tasks.
  • the effect of wear on the flail as a whole so that the material content of the wear is significantly reduced by the two-part design of the cutting body. It is therefore provided that the wear is always aligned only on the first, cutting part of the cutting body and the cutting body or the knife is then replaced when it is worn. This makes it possible that one may only have to replace the part of the cutting body, which actually exerts the cutting action. If this is worn, it can be changed. The material used for the knife of the cutting body is thus much lower overall.
  • the invention proposes that the cutting body is formed from at least one knife and at least one support element.
  • This has the advantage that the knife only needs to be kept as a wear part and this can, as already mentioned, done in a variety of forms for a variety of crushing tasks.
  • the support element will not be affected by the wear in most cases. Should this be the case, at least the lower body is spared from the wear, so that even then there is still a lower material usage than in the prior art.
  • Schlegel is such that only the projecting beyond the lower body part of the blade is to be processed in order to minimize the wear. Of course, this can be monitored accordingly in a further development.
  • the knife and the support member are provided as usual with through holes and connected to a present in the lower body through-hole by means of a through-bolt, for example.
  • the through holes are arranged corresponding to each other.
  • the lower body extends on its side facing the cutting body at a defined distance up to a circle defined by the knife tip of the knife and a circle of the lower body, around a support area for the knife to build.
  • This support region is already arranged clearly below the circle of the blade tip in comparison to the solutions of the prior art and is thus already protected against premature wear.
  • By providing a support element of the support area can still be easily extended or increased in the direction of the circle. This makes it possible to derive the forces occurring during the crushing work on the lower body or on the lower body.
  • the cutting body comprises at least one intermediate piece as a supporting element, which supports the knife towards the supporting area.
  • a recess arranged in the interior of the lower body is provided in the lower body, in which at least one connection projection provided on the intermediate piece engages in a form-fitting manner.
  • connection approach cooperates positively with a provided on the lower body nose.
  • This nose has already proven itself, especially in the prior art, as they are extremely favorable manner transmits the forces and thus prevents early wear of the lower body also.
  • the invention further proposes that the cutting body or the intermediate piece is supported in its entire width on or on the lower body. This also serves the better distribution of forces.
  • Another aspect of the invention is characterized in that the intermediate piece is at least partially formed in the lower body, in particular with the connecting lug used. This is achieved overall that the elements that produce the positive connection between the cutting body or intermediate piece and the lower body are protected during the machining process and occurring forces are transmitted securely.
  • connection approach is form-fitting, self-centering, in particularSERverriegelnd or self-locking inserted into the recess. That is, the connection insert engages positively in the recess of the lower body. It has proven useful if the recess, seen laterally in section, has the shape of a J.
  • connection approach and the recess have a mutually corresponding shape and in particular hooked, self-holding trained.
  • This serves, in particular, for the connection of the cutting body and the lower body, optionally with the inclusion of the intermediate piece, to form a positive and self-centering connection, which in particular is subject to low wear.
  • the recess is provided in the cutting direction seen in front part of the lower body.
  • the recess in the lower body is designed so that it is enclosed on four sides and in particular has lateral guide webs. This results in that the important part of the positive connection is enclosed in the recess, as it were, and is completely enclosed and protected over its entire area.
  • At least two support surfaces which are preferably angled wedge-shaped or conical, are located on the support element. Conically trained is to be understood as tapered expiring. These at least two support surfaces cooperate with counter support surfaces correspondingly provided on the lower body. It is not just a support but a simultaneous centering.
  • the support element in turn has on the side facing the blade knife support surfaces that receive the knife for the intended use, support and center.
  • each case for a bore in the knife, the intermediate piece and in the support region which are provided in the installed state corresponding to one another and which serve to receive a connecting means, such as a screw, in order to join said flail elements with one another connect.
  • a connecting means such as a screw
  • the knife is designed as an exchange knife having two cutting tips.
  • the change-over blade can be rotated once again by 180 ° during a maintenance work, so that it is again a corresponding one has sharp cutting tip. Only when the wear of both cutting tips then the knife is worn in total.
  • hardened areas, armorings, welds, hard metal supports or the like are provided on the knife on the edges and / or sides pointing in the cutting direction. This does not exclude that the entire knife is made of hard metal.
  • the knife is characterized by different tip shapes or cutting shapes.
  • the invention is in no way limited in this respect to the conventional knives or flail tips on flails known in the prior art.
  • the blade is wedge-shaped and / or V-shaped in the direction of the cutting tips. It has proven to be useful if, according to a development of the invention, the knife preferably has two Zentriererhöhungen. Furthermore, it is provided that wedge-shaped or V-shaped areas are provided on the knife, which cooperate in the installed state with the support member supporting, centering and / or clamping. All this serves for the safe installation of the knife and in particular a low wear.
  • the invention further proposes that at least one opening is provided on the lower body, which is preferably provided on the side facing away from the cutting direction of the lower body and which extends at least to the through hole.
  • This opening serves to receive a lubricant, such as a grease nipple, through which grease can pass into the through-bore.
  • the flail invention will usually be equipped in the through hole with a bush, which of course also has to be lubricated due to the mobility. For this reason, such a through hole is required.
  • the lower body and / or the cutting body are at least partially obtained as forged / stamped parts.
  • the invention also includes a solution in which the knife is integrally formed and corresponds in width to the width of the cutting body.
  • the invention also claims a shredding device, in particular a hacker with at least one flail, as has been previously described in a variety of embodiments.
  • the Fig. 1a and 1b show a flail according to the invention in a side view and in a three-dimensional image.
  • the flail 1 consists in the embodiment shown of a lower body 2, which has a through hole A for connecting the flail 1 with the rotor or the shaft.
  • the cutting body 3 consists of the knife 31 and at least one support element 32.
  • the knife 31, support member 32 and lower body 2 are releasably fixedly connected by means of a preferably designed as a machine screw screw 100.
  • the screw 100 is secured with a nut 101.
  • the holes in the blade 31, the support member 32 and the lower body 2 are designed so that they are formed corresponding to each other in the installed position, so that the screw 100 is easily inserted.
  • the blade 31 has a blade tip 310.
  • the blade tip 310 defines a flight circle d.
  • a support region 22 is provided, which is in the installed position or in the position shown in the upper region of the lower body 2.
  • a circle e of the lower body is defined, which is indicated by the upper edge of the lower body 2 and the support portion 22.
  • a defined distance between the knife circle d and the circle of the lower body e now determines the excavation height that can be reached at maximum without damaging the lower body 2.
  • the circle e is located at the upper bend of the intermediate piece 32. This ensures that the intermediate piece 32 is also not removed and damaged during normal use.
  • connection projection 5 provided on the intermediate piece 32 engages in a form-fitting manner.
  • connection lug 5 cooperates positively with a provided on the lower body 2 nose 21.
  • an opening 200 is shown, which serves for example for receiving a grease nipple. This lubricant can get into the through hole A, possibly to lubricate a bushing arranged there, which is then also pierced.
  • Fig. 1c and 1d show a support member 32 according to the invention in different views. It can be clearly seen that the connecting lug 5 is provided indented, so that it is in an in Fig. 1 only indicated recess 4 engages. The recess 4 is enclosed on four sides and has lateral guide webs 6, which form the boundary of the recess 4. In the prior art, it was so that the connection lug 5 was located directly on the knife and thus the knife had of course a much more massive design. This led in particular to high losses of material during intended use and the necessary replacement of the blades. By the invention, it is now only necessary to replace the blades 31; Support member and lower body 2 can be used several times. Well visible also that in the Fig.
  • corresponding blade support surfaces 321 to 325 are provided on the side facing the knife in the intended installation state. Furthermore, support surfaces 331 and 332 are shown extending V-shaped outwardly extending.
  • the design of the support element 32 according to the invention makes it possible to produce a self-centering connection between the support element and the lower body 2.
  • the reference numeral 324 denotes an angled surface on which the knife 31 is also supported.
  • Knife tip 310 is designated on the knife, and wedge-shaped blade counter-support surfaces 311, 312 and 313, which are formed counter to the cutting direction, are shown.

Description

Die Erfindung betrifft einen Schlegel für Zerkleinerungsvorrichtungen mit einem Rotor beziehungsweise mindestens einer Welle, auf beziehungsweise an welchen der Schlegel befestigbar ist.The invention relates to a flail for crushing devices with a rotor or at least one shaft, on or on which the flail is fastened.

Zerkleinerungsvorrichtungen, die mit wenigstens einem Schlegel ausgestattet sind, die an einem Rotor beziehungsweise an einer rotierenden Welle in der Zerkleinerungsvorrichtung angeordnet sind und die zum Zerkleinern des zu zerkleinernden Gutes mit einer in der Vorrichtung angeordneten Gegenschneide zusammenwirken, sind bekannt. Das Problem bei der Wartung von mit Schlegeln ausgestatteten Zerkleinerungsvorrichtungen liegt in der Regel darin, dass die Messer beziehungsweise die Messerträger sehr schnell verschleißen und dadurch zumindest die Messer oder aber die Messerträger in regelmäßigen Abständen gewechselt werden müssen. Das Wechseln der Messer ist dabei eine zeitaufwendige Angelegenheit, die zu verlängerten Stillstandszeiten der Zerkleinerungsvorrichtung führt.Crushing devices, which are equipped with at least one mallet, which are arranged on a rotor or on a rotating shaft in the comminution device and which cooperate for comminuting the material to be comminuted with a counter-blade arranged in the device, are known. The problem with the maintenance of equipped with flail shredders is usually that the blades or the blade carrier wear very quickly and thereby at least the blades or the blade carrier must be changed at regular intervals. The change of the blades is a time-consuming affair, which leads to prolonged downtime of the crushing device.

Im Stand der Technik sind insbesondere Schlegel der Anmelderin bekannt, die sich dadurch auszeichnen, dass ein Unterkörper und ein Schneidkopf formschlüssig miteinander zusammenwirken, um einen Schlegel zu bilden. Dieser Schlegel hat allerdings noch den Nachteil, dass der Materialanteil des Schneidkopfes beziehungsweise Schneidkörpers gegenüber dem Gesamtmaterialanteil des Schlegels viel zu hoch ist. Dadurch ergibt es sich, dass die Herstellung der Schlegel nach dem Stand der Technik natürlich deutlich aufwendiger ist und insbesondere auch die Ersatzteile für den Schlegel insgesamt noch zu hohe Kosten verursachen.In the prior art, in particular Schlegel the Applicant are known, which are characterized in that a lower body and a cutting head form-locking cooperate with each other to form a flail. However, this Schlegel still has the disadvantage that the material content of the cutting head or cutting body is much too high compared to the total material content of the beater. This results in that the preparation of the flails of the prior art, of course, is significantly more complex and in particular cause the spare parts for the Schlegel overall still too high costs.

Die DE 20 2006 019 687 U1 zeigt eine Schlegelanordnung zum Zerkleinern von Materialien, wobei der Schlegel einen Grundkörper aufweist, an den lösbar ein zahnförmiges Schlag- und/oder Schneidelement angeordnet ist. Ein gehärteter Schneideinsatz ist an der Schneidkante des zahnförmigen Schlag- und/oder Schneidelements vorgesehen.The DE 20 2006 019 687 U1 shows a flail assembly for comminuting materials, wherein the flail has a base body to which a tooth-shaped impact and / or cutting element is detachably arranged. A hardened cutting insert is provided on the cutting edge of the tooth-shaped striking and / or cutting element.

Die DE 20 2007 013 269 U1 zeigt einen Schlegel, der aus einem Unterkörper und einem Schneidkopf besteht, wobei in dem Unterkörper eine im Inneren des Unterkörpers angeordnete Ausnehmung vorgesehen ist, in die wenigstens ein an dem Schneideinsatz vorgesehener Verbindungsansatz formschlüssig eingreift. Die DE 20 2005 009 859 U1 zeigt einen Messerträger für Zerkleinerungsvorrichtungen, der aus einem auf einer Zerkleinerungswalze oder dergleichen befestigbaren Zahnkörper und aus wenigstens einem Messer besteht, wobei das Messer formschlüssig an dem Zahnkörper anordnenbar ist.The DE 20 2007 013 269 U1 shows a flail, which consists of a lower body and a cutting head, wherein in the lower body arranged in the interior of the lower body recess is provided, in which at least one provided on the cutting insert connection lug engages positively. The DE 20 2005 009 859 U1 shows a knife carrier for crushing devices, which consists of a fixable on a crushing roller or the like tooth body and at least one knife, the knife is positively arranged on the tooth body arrangeable.

Ausgehend von diesem Stand der Technik ist es Aufgabe der Erfindung, einen Schlegel für Zerkleinerungsvorrichtung vorzuschlagen, der die im Stand der Technik bekannten Nachteile nicht mehr aufweist und die Kosten für die Herstellung und Instandhaltung der Zerkleinerungsvorrichtung zu reduzieren.Based on this prior art, it is an object of the invention to provide a hammer for crushing device, which no longer has the disadvantages known in the prior art and to reduce the cost of manufacturing and maintenance of the crushing device.

Die vorgenannte Aufgabe wird erfindungsgemäß durch die Merkmale des Anspruchs 1 gelöst.The aforementioned object is achieved by the features of claim 1.

Die Erfindung geht von dem vorher genannten Stand der Technik aus und schlägt einen Schlegel für Zerkleinerungsvorrichtungen mit einem Rotor beziehungsweise mindestens einer Welle, auf beziehungsweise an welcher der Schlegel befestigbar ist, vor, bestehend aus einem mit einer Durchgangsbohrung versehenen Unterkörper, wobei die Durchgangsbohrung zur Verbindung des Schlegels mit dem Rotor beziehungsweise der Welle vorgesehen ist, und wenigstens einem Schneidkörper, wobei der wenigstens eine Schneidkörper mit dem Unterkörper lösbar/fest verbindbar ist, und der Schlegel sich dadurch auszeichnet, dass der Schneidkörper aus wenigstens zwei Teilen gebildet ist. Durch die zweiteilige Ausgestaltung des Schneidkörpers gelingt es jetzt, den Materialanteil des Verschleißteils deutlich geringer zu halten als dies im Stand der Technik bisher bekannt war. Gegenüber den vorhergehenden Lösungen wird dadurch natürlich die Wartung insgesamt deutlich günstiger. Des weiteren bleiben die im Stand der Technik durch die Vorgängerlösung erhaltenen Vorzüge bestehen, wonach der Schneidkörper universell auf unterschiedliche Schneidaufgaben ausgerichtet werden kann. Auch hier ist natürlich die Auswirkung des Verschleißes auf den Schlegel insgesamt so, dass der Materialanteil am Verschleiß durch die zweiteilige Ausgestaltung des Schneidkörpers deutlich verringert wird. Es ist demnach vorgesehen, dass der Verschleiß immer nur auf den ersten, schneidenden Teil des Schneidkörpers ausgerichtet wird und der Schneidkörper beziehungsweise das Messer dann ausgewechselt wird, wenn es verschlissen ist. Dadurch ist es gegeben, dass man gegebenenfalls nur noch den Teil des Schneidkörpers auszuwechseln hat, der tatsächlich die Schneidwirkung ausübt. Ist dieser verschlissen, kann er gewechselt werden. Der Materialeinsatz für das Messer des Schneidkörpers ist damit insgesamt wesentlich geringer.The invention is based on the aforementioned prior art and proposes a hammer for crushing devices with a rotor or at least one shaft, on or to which the flail is fastened, consisting of one with a through hole provided lower body, wherein the through hole is provided for connection of the bracket with the rotor or the shaft, and at least one cutting body, wherein the at least one cutting body with the lower body is detachably / firmly connected, and the Schlegel is characterized in that the cutting body of at least two parts is formed. Due to the two-part design of the cutting body, it is now possible to keep the proportion of material of the wearing part significantly lower than was previously known in the prior art. Compared to the previous solutions, of course, the overall maintenance is significantly cheaper. Furthermore, the advantages obtained in the prior art by the previous solution remain, according to which the cutting body can be aligned universally to different cutting tasks. Again, of course, the effect of wear on the flail as a whole so that the material content of the wear is significantly reduced by the two-part design of the cutting body. It is therefore provided that the wear is always aligned only on the first, cutting part of the cutting body and the cutting body or the knife is then replaced when it is worn. This makes it possible that one may only have to replace the part of the cutting body, which actually exerts the cutting action. If this is worn, it can be changed. The material used for the knife of the cutting body is thus much lower overall.

Die Erfindung schlägt vor, dass der Schneidkörper aus wenigstens einem Messer und wenigstens einem Stützelement gebildet ist. Dies hat den Vorteil, dass das Messer nur noch als Verschleißteil vorgehalten werden muss und dies kann, wie bereits erwähnt, in unterschiedlichsten Formen für die unterschiedlichsten Zerkleinerungsaufgaben geschehen. Das Stützelement wird von dem Verschleiß in den meisten Fällen nicht betroffen sein. Sollte dies doch einmal der Fall sein, bleibt zumindest der Unterkörper von dem Verschleiß verschont, so dass auch dann immer noch ein geringerer Materialeinsatz vorhanden ist als im Stand der Technik. Allerdings ist die Ausgestaltung des erfindungsgemäßen Schlegels so, dass immer nur der über den Unterkörper hervorstehende Teil des Messers abgearbeitet werden soll, um den Verschleiß möglichst gering zu halten. Dies kann in einer Weiterbildung natürlich entsprechend überwacht werden. Das Messer und das Stützelement werden wie üblich mit Durchgangsbohrungen versehen und mit einer in dem Unterkörper vorhandenen Durchgangsbohrung mittels einer Durchgangsschraube beispielsweise verbunden. Die Durchgangsbohrungen sind dabei korrespondierend zu einander angeordnet.The invention proposes that the cutting body is formed from at least one knife and at least one support element. This has the advantage that the knife only needs to be kept as a wear part and this can, as already mentioned, done in a variety of forms for a variety of crushing tasks. The support element will not be affected by the wear in most cases. Should this be the case, at least the lower body is spared from the wear, so that even then there is still a lower material usage than in the prior art. However, the design of the invention Schlegel is such that only the projecting beyond the lower body part of the blade is to be processed in order to minimize the wear. Of course, this can be monitored accordingly in a further development. The knife and the support member are provided as usual with through holes and connected to a present in the lower body through-hole by means of a through-bolt, for example. The through holes are arranged corresponding to each other.

Erfindungsgemäß wurde gefunden, dass es von Vorteil ist, wenn sich der Unterkörper an seiner zum Schneidkörper weisenden Seite im definierten Abstand bis zu einem Flugkreis, der durch die Messerspitze des Messers und einen Flugkreis des Unterkörpers definiert ist, erstreckt, um einen Stützbereich für das Messer zu bilden. Dieser Stützbereich ist schon deutlich unterhalb des Flugkreises der Messerspitze im Vergleich zu den Lösungen des Standes der Technik angeordnet und ist dadurch bereits vor einem frühzeitigen Verschleiß geschützt. Durch das Vorsehen eines Stützelementes kann der Stützbereich noch leicht verlängert werden beziehungsweise in Richtung des Flugkreises vergrößert werden. Dadurch gelingt es, die auftretenden Kräfte bei der Zerkleinerungsarbeit auf den Unterkörper beziehungsweise über den Unterkörper abzuleiten.According to the invention, it has been found that it is advantageous if the lower body extends on its side facing the cutting body at a defined distance up to a circle defined by the knife tip of the knife and a circle of the lower body, around a support area for the knife to build. This support region is already arranged clearly below the circle of the blade tip in comparison to the solutions of the prior art and is thus already protected against premature wear. By providing a support element of the support area can still be easily extended or increased in the direction of the circle. This makes it possible to derive the forces occurring during the crushing work on the lower body or on the lower body.

Erfindungsgemäß ist vorgesehen, wenn der Schneidkörper wenigstens ein Zwischenstück als Stützelement umfasst, welches das Messer zum Stützbereich hin abstützt. Es handelt sich hierbei um eine vorteilhafte Ausgestaltung in Form eines Zwischenstückes als Stützelement.According to the invention, it is provided that the cutting body comprises at least one intermediate piece as a supporting element, which supports the knife towards the supporting area. This is an advantageous embodiment in the form of an intermediate piece as a support element.

Entsprechend einer vorteilhaften Weiterbildung der Erfindung ist in dem Unterkörper eine im Inneren des Unterkörpers angeordnete Ausnehmung vorgesehen, in die wenigstens ein an dem Zwischenstück vorgesehener Verbindungsansatz formschlüssig eingreift. Dies führt dazu, dass die Elemente des Unterkörpers, die den Formschluss herstellen, komplett vor Verschleiß geschützt sind. Sie befinden sich sozusagen im Inneren des Unterkörpers und können dadurch von dem zu zerkleinernden Material nicht beschädigt beziehungsweise abgearbeitet werden.According to an advantageous development of the invention, a recess arranged in the interior of the lower body is provided in the lower body, in which at least one connection projection provided on the intermediate piece engages in a form-fitting manner. As a result, the elements of the lower body, which produce positive locking, are completely protected against wear. They are, so to speak, inside the lower body and thus can not be damaged or processed by the material to be shredded.

Als Vorteil hat es sich dabei herausgestellt, wenn der Verbindungsansatz mit einer an dem Unterkörper vorgesehen Nase formschlüssig zusammenwirkt. Diese Nase hat sich insbesondere im Stand der Technik schon bewährt, da sie in äußerst günstiger Weise die auftretenden Kräfte überträgt und so einem frühen Verschleiß des Unterkörpers auch vorbeugt.As an advantage, it has been found, when the connection approach cooperates positively with a provided on the lower body nose. This nose has already proven itself, especially in the prior art, as they are extremely favorable manner transmits the forces and thus prevents early wear of the lower body also.

Die Erfindung schlägt weiterhin vor, dass der Schneidkörper beziehungsweise das Zwischenstück sich in seiner gesamten Breite auf beziehungsweise an dem Unterkörper abstützt. Dies dient ebenfalls der besseren Kräfteverteilung.The invention further proposes that the cutting body or the intermediate piece is supported in its entire width on or on the lower body. This also serves the better distribution of forces.

Ein weiterer Aspekt der Erfindung ist dadurch angegeben, dass das Zwischenstück in den Unterkörper zumindest teilweise, insbesondere mit dem Verbindungsansatz einsetzbar ausgebildet ist. Damit wird insgesamt erreicht, dass die Elemente, die den Formschluss zwischen dem Schneidkörper beziehungsweise Zwischenstück und dem Unterkörper herstellen, beim Bearbeitungsvorgang geschützt sind und auftretende Kräfte sicher übertragen werden.Another aspect of the invention is characterized in that the intermediate piece is at least partially formed in the lower body, in particular with the connecting lug used. This is achieved overall that the elements that produce the positive connection between the cutting body or intermediate piece and the lower body are protected during the machining process and occurring forces are transmitted securely.

Gemäß einer vorteilhaften Weiterbildung der Erfindung ist der Verbindungsansatz formschlüssig, selbstzentrierend, insbesondere selbstverriegelnd beziehungsweise selbstsichernd in die Ausnehmung einsetzbar. Das heißt, der Verbindungseinsatz greift formschlüssig in die Ausnehmung des Unterkörpers ein. Dabei hat es sich bewährt, wenn die Ausnehmung, seitlich im Schnitt gesehen, die Form eines J aufweist.According to an advantageous embodiment of the invention, the connection approach is form-fitting, self-centering, in particular selbstverriegelnd or self-locking inserted into the recess. That is, the connection insert engages positively in the recess of the lower body. It has proven useful if the recess, seen laterally in section, has the shape of a J.

Dabei ist es selbstverständlich gegeben, dass der Verbindungsansatz und die Ausnehmung eine zueinander korrespondierende Form aufweisen und insbesondere verhakend, sich selbst haltend ausgebildet sind. Dies dient insbesondere dazu, dass die Verbindung von Schneidkörper und Unterkörper gegebenenfalls unter Einbeziehung des Zwischenstückes eine formschlüssige und selbstzentrierende Verbindung eingehen, die insbesondere einem geringen Verschleiß unterliegt. Dabei ist klar, dass die Ausnehmung im in Schneidrichtung gesehen vorderen Teil des Unterkörpers vorgesehen ist.It is of course given that the connection approach and the recess have a mutually corresponding shape and in particular hooked, self-holding trained. This serves, in particular, for the connection of the cutting body and the lower body, optionally with the inclusion of the intermediate piece, to form a positive and self-centering connection, which in particular is subject to low wear. It is clear that the recess is provided in the cutting direction seen in front part of the lower body.

Die Ausnehmung im Unterkörper ist dabei so gestaltet, dass diese vierseitig umschlossen ist und insbesondere seitliche Führungsstege aufweist. Dadurch ergibt es sich, dass der wichtige Teil der formschlüssigen Verbindung sozusagen in der Ausnehmung eingeschlossen ist und total vollflächig umschlossen und geschützt ist.The recess in the lower body is designed so that it is enclosed on four sides and in particular has lateral guide webs. This results in that the important part of the positive connection is enclosed in the recess, as it were, and is completely enclosed and protected over its entire area.

Um die Kräfte aus dem Schneidkörper über das Zwischenstück in den Unterkörper günstig einzutragen ist es nach der Erfindung vorgesehen, dass sich wenigstens zwei Abstützflächen, die bevorzugt keilförmig abgewinkelt oder konisch ausgebildet sind, an dem Stützelement befinden. Konisch ausgebildet ist dabei als konisch auslaufend zu verstehen. Diese wenigstens zwei Abstützflächen wirken mit an dem Unterkörper korrespondierend vorgesehenen Gegenstützflächen zusammen. Dabei erfolgt nicht nur ein Abstützen sondern ein gleichzeitiges Zentrieren. Das Stützelement hat wiederum an der dem Messer zugewandten Seite Messerstützflächen, die das Messer für den bestimmungsgemäßen Einsatz aufnehmen, stützen und zentrieren. Diese wirken selbstverständlich auch mit an dem Messer vorgesehenen Messer-Gegenstützflächen zusammen, so dass hier eine Einheit insgesamt entsteht, nämlich aus dem Schneidkörper und dem Unterkörper, wobei zu beachten ist, dass der Schneidkörper aus wenigstens zwei Teilen, nämlich dem Messer und dem wenigstens einen Stützelement ausgebildet ist. Selbstverständlich schließt diese Ausgestaltung nicht aus, dass gegebenenfalls noch ein weiteres Zwischenstück vorgesehen sein kann. Dies kann beispielsweise für feinere Zerkleinerungsarbeiten von Vorteil sein, wenn der Messerverschleiß nicht so hoch ist.In order to enter the forces from the cutting body via the intermediate piece in the lower body low, it is provided according to the invention that at least two support surfaces, which are preferably angled wedge-shaped or conical, are located on the support element. Conically trained is to be understood as tapered expiring. These at least two support surfaces cooperate with counter support surfaces correspondingly provided on the lower body. It is not just a support but a simultaneous centering. The support element in turn has on the side facing the blade knife support surfaces that receive the knife for the intended use, support and center. Of course, these also cooperate with knife counter-support surfaces provided on the knife, so that a total unit arises here, namely from the cutting body and the lower body, wherein it should be noted that the cutting body consists of at least two parts, namely the knife and the at least one Support element is formed. Of course, this embodiment does not exclude that, if appropriate, another intermediate piece may be provided. This can be advantageous, for example, for finer size reduction work, when the blade wear is not so high.

Erfindungsgemäß ist vorgesehen, dass in dem Messer, dem Zwischenstück und in dem Stützbereich jeweils eine Bohrung vorgesehen ist, die im Einbauzustand korrespondierend zu einander vorgesehen sind und die der Aufnahme eines Verbindungsmittels, wie zum Beispiel einer Schraube, dienen, um die genannten Schlegelelemente miteinander zu verbinden. Durch die Schraube wird dabei im Zusammenwirken mit einer entsprechenden Mutter der Schlegel als Einheit hergestellt, in dem der Schneidkörper mit dem Zwischenstück an dem Unterkörper befestigt wird.According to the invention, provision is made in each case for a bore in the knife, the intermediate piece and in the support region, which are provided in the installed state corresponding to one another and which serve to receive a connecting means, such as a screw, in order to join said flail elements with one another connect. By the screw is made in cooperation with a corresponding mother of the flail as a unit in which the cutting body is attached to the intermediate piece to the lower body.

Von besonderem Vorteil ist es dabei, wenn das Messer als Wechselmesser ausgebildet ist, das zwei Schneidspitzen aufweist. Dadurch ergibt es sich, dass man beim Verschleiß der ersten Spitze das Wechselmesser während einer Wartungsarbeit noch einmal um 180° drehen kann, so dass es dann wieder eine entsprechend scharfe Schneidspitze aufweist. Erst beim Verschleiß beider Schneidspitzen ist dann das Messer insgesamt verschlissen.It is particularly advantageous if the knife is designed as an exchange knife having two cutting tips. As a result, it can be seen that during wear of the first tip, the change-over blade can be rotated once again by 180 ° during a maintenance work, so that it is again a corresponding one has sharp cutting tip. Only when the wear of both cutting tips then the knife is worn in total.

Um den Verschleiß möglichst gering zu halten, sind gemäß einer vorteilhaften Weiterbildung der Erfindung an dem Messer an den in Schneidrichtung weisenden Kanten und/oder Seiten gehärtete Bereiche, Aufpanzerungen, Aufschweißungen, Hartmetallauflagen oder dergleichen vorgesehen. Dies schließt nicht aus, dass das gesamte Messer aus Hartmetall gebildet ist.In order to keep the wear as low as possible, according to an advantageous development of the invention, hardened areas, armorings, welds, hard metal supports or the like are provided on the knife on the edges and / or sides pointing in the cutting direction. This does not exclude that the entire knife is made of hard metal.

Auch nach der jetzt vorliegenden Erfindung ist es möglich, dass das Messer durch unterschiedliche Spitzenformen beziehungsweise Schneidenformen gekennzeichnet ist. Hierbei ist eine ganze Reihe von unterschiedlichen Ausgestaltungsmöglichkeiten gegeben. Die Erfindung ist hier in keinster Weise gegenüber den im Stand der Technik bekannten üblichen Messern für Schlegel beziehungsweise Schlegelspitzen an Schlegeln eingeschränkt.Even after the present invention, it is possible that the knife is characterized by different tip shapes or cutting shapes. Here is a whole series of different design options. The invention is in no way limited in this respect to the conventional knives or flail tips on flails known in the prior art.

Von Vorteil ist es auch, wenn das Messer in Richtung der Schneidspitzen keilförmig und/oder V-förmig ausgebildet ist. Dabei hat es sich bewährt, wenn gemäß einer Weiterbildung der Erfindung das Messer bevorzugt zwei Zentriererhöhungen aufweist. Des weiteren ist es vorgesehen, dass an dem Messer keilförmige beziehungsweise V-förmige Bereiche vorgesehen sind, die im Einbauzustand mit dem Stützelement abstützend, zentrierend und/oder klemmend zusammenwirken. Dies alles dient dem sicheren Einbau des Messers und insbesondere einem geringen Verschleiß.It is also advantageous if the blade is wedge-shaped and / or V-shaped in the direction of the cutting tips. It has proven to be useful if, according to a development of the invention, the knife preferably has two Zentriererhöhungen. Furthermore, it is provided that wedge-shaped or V-shaped areas are provided on the knife, which cooperate in the installed state with the support member supporting, centering and / or clamping. All this serves for the safe installation of the knife and in particular a low wear.

Die Erfindung schlägt des weiteren vor, dass an dem Unterkörper wenigstens eine Öffnung vorgesehen ist, die bevorzugt auf der der Schneidrichtung abgewandten Seite des Unterkörpers vorgesehen ist und die sich zumindest bis zur Durchgangsbohrung erstreckt. Diese Öffnung dient der Aufnahme eines Schmiermittels, wie zum Beispiel eines Fettnippels, durch den Fett in die Durchgangsbohrung gelangen kann. Der erfindungsgemäße Schlegel wird in der Regel in der Durchgangsbohrung mit einer Buchse ausgestattet sein, die natürlich aufgrund der Bewegbarkeit auch geschmiert werden muss. Aus diesem Grund ist eine solche Durchgangsbohrung erforderlich.The invention further proposes that at least one opening is provided on the lower body, which is preferably provided on the side facing away from the cutting direction of the lower body and which extends at least to the through hole. This opening serves to receive a lubricant, such as a grease nipple, through which grease can pass into the through-bore. The flail invention will usually be equipped in the through hole with a bush, which of course also has to be lubricated due to the mobility. For this reason, such a through hole is required.

Der Unterkörper und/oder der Schneidkörper sind zumindest teilweise als Schmiede-/Stanzteile erhalten. Die Erfindung umfasst selbstverständlich auch eine Lösung, bei der das Messer einteilig ausgebildet und in der Breite der Breite des Schneidkörpers entspricht.The lower body and / or the cutting body are at least partially obtained as forged / stamped parts. Of course, the invention also includes a solution in which the knife is integrally formed and corresponds in width to the width of the cutting body.

Die Erfindung beansprucht selbstverständlich auch eine Zerkleinerungsvorrichtung, insbesondere einem Hacker mit wenigstens einem Schlegel, wie er vorher in den verschiedensten Ausgestaltungen beschrieben worden ist.Of course, the invention also claims a shredding device, in particular a hacker with at least one flail, as has been previously described in a variety of embodiments.

Die Erfindung wird nachfolgend anhand von Ausführungsbeispielen weiter beschrieben. Es zeigen:

Fig. 1a und 1b:
Schlegel nach der Erfindung in Seitenansicht und als dreidimensionale Abbildung,
Fig. 1c und 1d:
Stützelement nach der Erfindung in verschiedenen Ansichten,
Fig. 1e:
Messer nach der Erfindung in einer Variante.
The invention will be further described by means of embodiments. Show it:
1a and 1b:
Flail according to the invention in side view and as a three-dimensional image,
FIGS. 1c and 1d:
Support element according to the invention in different views,
Fig. 1e:
Knife according to the invention in a variant.

Die Fig. 1a und 1b zeigen einen Schlegel nach der Erfindung in einer Seitenansicht und in einer dreidimensionalen Abbildung. Der Schlegel 1 besteht in der gezeigten Ausführungsform aus einem Unterkörper 2, der eine Durchgangsbohrung A zur Verbindung des Schlegels 1 mit dem Rotor beziehungsweise der Welle aufweist. Der Schneidkörper 3 besteht aus dem Messer 31 und wenigstens einem Stützelement 32. Wie ersichtlich, sind Messer 31, Stützelement 32 und Unterkörper 2 lösbar fest mittels einer vorzugsweise als Maschinenschraube ausgebildeten Schraube 100 verbunden. Die Schraube 100 ist mit einer Mutter 101 gesichert. Die Bohrungen im Messer 31, im Stützelement 32 und im Unterkörper 2 sind dabei so ausgestaltet, dass sie in der Einbaustellung zueinander korrespondierend ausgebildet sind, so dass die Schraube 100 problemlos einführbar ist.The Fig. 1a and 1b show a flail according to the invention in a side view and in a three-dimensional image. The flail 1 consists in the embodiment shown of a lower body 2, which has a through hole A for connecting the flail 1 with the rotor or the shaft. The cutting body 3 consists of the knife 31 and at least one support element 32. As can be seen, the knife 31, support member 32 and lower body 2 are releasably fixedly connected by means of a preferably designed as a machine screw screw 100. The screw 100 is secured with a nut 101. The holes in the blade 31, the support member 32 and the lower body 2 are designed so that they are formed corresponding to each other in the installed position, so that the screw 100 is easily inserted.

In der gewählten Ausführungsform besitzt das Messer 31 eine Messerspitze 310. Durch die Messerspitze 310 wird ein Flugkreis d definiert. An dem Unterkörper 2 ist ein Stützbereich 22 vorgesehen, der sich in Einbaustellung beziehungsweise in der gezeigten Stellung im oberen Bereich des Unterkörpers 2 befindet. Hier wird ein Flugkreis e des Unterkörpers definiert, der durch die obere Kante des Unterkörpers 2 beziehungsweise des Stützbereichs 22 angegeben ist. Ein definierter Abstand zwischen dem Messer-Flugkreis d und dem Flugkreis des Unterkörpers e bestimmt nun die Abtraghöhe, die maximal erreichbar ist, ohne den Unterkörper 2 zu beschädigen. Günstigerweise wird es allerdings vorgesehen, dass sich der Flugkreis e an der oberen Abwinklung des Zwischenstücks 32 befindet. Dadurch wird erreicht, dass das Zwischenstück 32 beim bestimmungsgemäßen Einsatz ebenfalls nicht abgetragen und beschädigt wird.In the chosen embodiment, the blade 31 has a blade tip 310. The blade tip 310 defines a flight circle d. On the lower body 2, a support region 22 is provided, which is in the installed position or in the position shown in the upper region of the lower body 2. Here, a circle e of the lower body is defined, which is indicated by the upper edge of the lower body 2 and the support portion 22. A defined distance between the knife circle d and the circle of the lower body e now determines the excavation height that can be reached at maximum without damaging the lower body 2. Conveniently, however, it is provided that the circle e is located at the upper bend of the intermediate piece 32. This ensures that the intermediate piece 32 is also not removed and damaged during normal use.

In dem Unterkörper 2 ist eine im Inneren des Unterkörpers angeordnete Ausnehmung 4 vorgesehen, in die wenigstens ein an dem Zwischenstück 32 vorgesehener Verbindungsansatz 5 formschlüssig eingreift. Dabei wirkt der Verbindungsansatz 5 mit einer an dem Unterkörper 2 vorgesehenen Nase 21 formschlüssig zusammen. Auf der der Schneidrichtung abgewandten Seite des Unterkörpers 2 ist eine Öffnung 200 gezeigt, die beispielsweise zur Aufnahme eines Schmiernippels dient. Dadurch kann Schmierstoff in die Durchgangsbohrung A gelangen, um gegebenenfalls eine dort angeordnete Buchse, die dann ebenfalls mit durchbohrt wird, zu schmieren.In the lower body 2, a recess 4 arranged in the interior of the lower body is provided, in which at least one connection projection 5 provided on the intermediate piece 32 engages in a form-fitting manner. In this case, the connection lug 5 cooperates positively with a provided on the lower body 2 nose 21. On the side facing away from the cutting direction of the lower body 2, an opening 200 is shown, which serves for example for receiving a grease nipple. This lubricant can get into the through hole A, possibly to lubricate a bushing arranged there, which is then also pierced.

Die Fig. 1c und 1d zeigen ein Stützelement 32 nach der Erfindung in verschiedenen Ansichten. Dabei ist gut erkennbar, dass der Verbindungsansatz 5 eingerückt vorgesehen ist, so dass er in eine in Fig. 1 nur angedeutete Ausnehmung 4 eingreift. Die Ausnehmung 4 ist dabei vierseitig umschlossen und besitzt seitliche Führungsstege 6, die die Begrenzung der Ausnehmung 4 bilden. Im Stand der Technik war es so, dass der Verbindungsansatz 5 sich am Messer direkt befand und dadurch das Messer selbstverständlich eine wesentlich massivere Ausgestaltung hatte. Dies führte insbesondere zu hohen Materialverlusten beim bestimmungsgemäßen Einsatz und beim notwendigen Austausch der Messer. Durch die Erfindung ist es jetzt nur noch notwendig, die Messer 31 auszutauschen; Stützelement und Unterkörper 2 können mehrmals verwendet werden. Gut ersichtlich ist auch, dass in den Fig. 1c und 1d entsprechende Messerstützflächen 321 bis 325 auf der dem Messer im bestimmungsgemäßen Einbauzustand zugewandten Seite vorgesehen sind. Des weiteren sind Abstützflächen 331 und 332 gezeigt, die sich V-förmig nach außen verlaufend erstrecken. Durch die Ausgestaltung des Stützelementes 32 nach der Erfindung gelingt es, eine selbstzentrierende Verbindung zwischen dem Stützelement und dem Unterkörper 2 herzustellen. Mit dem Bezugszeichen 324 ist eine abgewinkelte Fläche bezeichnet, an der sich das Messer 31 ebenfalls abstützt.The Fig. 1c and 1d show a support member 32 according to the invention in different views. It can be clearly seen that the connecting lug 5 is provided indented, so that it is in an in Fig. 1 only indicated recess 4 engages. The recess 4 is enclosed on four sides and has lateral guide webs 6, which form the boundary of the recess 4. In the prior art, it was so that the connection lug 5 was located directly on the knife and thus the knife had of course a much more massive design. This led in particular to high losses of material during intended use and the necessary replacement of the blades. By the invention, it is now only necessary to replace the blades 31; Support member and lower body 2 can be used several times. Well visible also that in the Fig. 1c and 1d corresponding blade support surfaces 321 to 325 are provided on the side facing the knife in the intended installation state. Furthermore, support surfaces 331 and 332 are shown extending V-shaped outwardly extending. The design of the support element 32 according to the invention makes it possible to produce a self-centering connection between the support element and the lower body 2. The reference numeral 324 denotes an angled surface on which the knife 31 is also supported.

Die Fig. 1e zeigt nun eine Ausführungsform eines Messers 31 nach der Erfindung. Dieses Messer 31 ist Bestandteil des Schneidkörpers 3, der schematisch mit einem Pfeil angedeutet ist. An dem Messer ist die Messerspitze 310 bezeichnet, des weiteren sind keilförmig sich entgegen der Schneidrichtung ausgebildete Messer-Gegenstützflächen 311, 312 und 313 gezeigt.The Fig. 1e now shows an embodiment of a knife 31 according to the invention. This knife 31 is part of the cutting body 3, which is schematically indicated by an arrow. Knife tip 310 is designated on the knife, and wedge-shaped blade counter-support surfaces 311, 312 and 313, which are formed counter to the cutting direction, are shown.

Die Erfindung wurde zuvor anhand von Ausführungsbeispieles beschrieben. Die jetzt und mit der Anmeldung später eingereichten Ansprüche sind Versuche zur Formulierung ohne Präjudiz für die Erzielung eines weitergehenden Schutzes.The invention has been described above with reference to exemplary embodiments. The claims now filed later and with the application are attempts to formulate without prejudice to the attainment of further protection.

Die in den abhängigen Ansprüchen angeführten Rückbeziehungen weisen auf die weitere Ausbildung des Gegenstandes des Hauptanspruches durch die Merkmale des jeweiligen Unteranspruches hin. Jedoch sind diese nicht als ein Verzicht auf die Erzielung eines selbständigen, gegenständlichen Schutzes für die Merkmale der rückbezogenen Unteransprüche zu verstehen.The references cited in the dependent claims indicate the further development of the subject matter of the main claim by the features of the respective subclaim. However, these are not to be understood as a waiver of obtaining independent, objective protection for the features of the dependent claims.

Merkmale, die bislang nur in der Beschreibung offenbart wurden, können im Laufe des Verfahrens als von erfindungswesentlicher Bedeutung, zum Beispiel zur Abgrenzung vom Stand der Technik beansprucht werden.Features that have hitherto been disclosed only in the description may be claimed in the course of the method as of essential importance to the invention, for example to distinguish from the prior art.

Claims (14)

  1. A mallet for comminuting devices, comprising a rotor and/or at least one shaft, on and/or to which the mallet (1) can be attached, consisting of a lower body (2) provided with a through-bore (A), wherein the through-bore (A) is provided to connect the mallet (1) to the rotor and/or the shaft, and at least one cutting body (3), wherein the at least one cutting body (3) can be detachably/rigidly connected to the lower body (2), wherein the cutting body (3) is formed of at least two parts,
    characterised in that
    the cutting body (3) is formed of at least one blade (31) and at least one support element (32), in that the cutting body (3) comprises at least one intermediate piece as a support element (32), which braces the blade (31) towards a support region (22), and in that a bore is provided in each of the blade (31), the intermediate piece (32) and the support region (22), which are provided corresponding to each other in the installed state and which are used to accommodate a connection means, such as a screw (100) for example, in order to connect the mentioned mallet elements to one another.
  2. The mallet according to claim 1, characterised in that the lower body (2) is defined at the side thereof facing the cutting body (3) at a defined distance, which is defined by a blade circle of rotation (d), which is defined by the blade tip (310) of the blade (31), and a circle of rotation (e) of the lower body in order to form a support region (22) for the blade.
  3. The mallet according to claim 1 or 2, characterised in that in the lower body (2) a recess (4) which is arranged inside the lower body (2) is provided and in which at least one connecting lug (5) provided on the intermediate piece (32) engages in a form-fitting manner.
  4. The mallet according to claim 3, characterised in that the connecting lug (5) interacts in a form-fitting manner with a nose (21) provided on the lower body (2).
  5. The mallet according to any of the preceding claims, characterised in that the cutting body (3) or the intermediate piece (32) is supported over the entire width thereof on or against the lower body (2).
  6. The mallet according to claim 3 or 4, characterised in that the intermediate piece (32) is designed in such a way that same can be at least partially inserted into the lower body (2), in particular with the connecting lug (5).
  7. The mallet according to claim 3, 4 or 6, characterised in that the connecting lug (5) engages in the recess (4) in a form-fitting, self-centring, in particular self-locking and/or self-securing manner.
  8. The mallet according to one or claims 3 to 7, characterised in that the recess (4) has a J-shape when viewed laterally in cross section.
  9. The mallet according to one of claims 3 to 8, characterised in that the connecting lug (5) and the recess (4) have a mutually corresponding shape and are designed in a self-holding manner, in particular in a hooking manner.
  10. The mallet according to one of claims 3 to 9, characterised in that the recess (4) is provided in the front part of the lower body (2) viewed in the cutting direction.
  11. The mallet according to one or claims 3 to 10, characterised in that the recess (4) is enclosed on four sides, and in particular comprises lateral guide webs (6).
  12. The mallet according to one of the preceding claims, characterised in that the support element (32) comprises at least two support surfaces (331, 332), which are preferably angled in a wedge-like manner or are conically tapered and which support and centre the intermediate piece (32) in interaction with the corresponding counter-support surfaces (210, 211) provided on the lower body (2).
  13. The mallet according to one of the preceding claims, characterised in that blade support surfaces (321, 322, 323, 324, 325) are provided on the support element (32) on the side facing the blade (31), which receive support and centre the blade (31) for the intended use.
  14. The mallet according to claim 13, characterised in that blade counter-support surfaces (311, 312, 313) are formed on the blade (31), which interact with the blade support surfaces (321, 322, 323, 324, 325).
EP11779576.5A 2010-10-08 2011-10-05 Hammer with a divided hammer tip Active EP2624959B1 (en)

Applications Claiming Priority (2)

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DE202010014029U DE202010014029U1 (en) 2010-10-08 2010-10-08 Mallets with split flail tip
PCT/EP2011/004963 WO2012045447A2 (en) 2010-10-08 2011-10-05 Hammer with a divided hammer tip

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EP2624959A2 EP2624959A2 (en) 2013-08-14
EP2624959B1 true EP2624959B1 (en) 2019-09-04

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US (1) US10118178B2 (en)
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CA (1) CA2818886C (en)
DE (1) DE202010014029U1 (en)
WO (1) WO2012045447A2 (en)

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DE202010014029U1 (en) 2012-01-09
WO2012045447A3 (en) 2012-06-28
EP2624959A2 (en) 2013-08-14
CA2818886C (en) 2017-09-26
WO2012045447A2 (en) 2012-04-12
US20130277476A1 (en) 2013-10-24
US10118178B2 (en) 2018-11-06
CA2818886A1 (en) 2012-04-12

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