Rip tooth assembly of a shredding apparatus

Abstract

The present invention relates to a ripper tooth arrangement (1) of a comminution device (2) for comminution of feed material (3), in particular for use in wood recycling, provided for attachment to a rotor (5) having a plurality of rotor sections (4), in which a bearing axis (7) running at least substantially parallel to the rotor rotation axis (6) of the rotor (5) is provided in each rotor section (4). According to the invention, at least one ripper tooth (8) is provided which can be mounted at least indirectly on the bearing axis (7) of a rotor section (4).

Description

[0001] The present invention relates to a ripper tooth arrangement of a comminution device for comminution of feed material, in particular for use in wood recycling, wherein the comminution device is provided for attachment to a rotor having a plurality of rotor sections. Furthermore, the present invention relates to a rotor of a comminution device and to the comminution device having a rotor and a ripper tooth arrangement arranged on the rotor.

[0002] The present invention relates to the technical field of comminution devices for comminution of feed material. In particular, the feed material is / are wood or wood particles, wood components, branches, or the like. The comminution device comprises a driven rotor that is rotatably mounted in the comminution device. Due to the appropriate design of the rotor or the comminution tools arranged on the rotor, comminution of the feed material, such as the comminution of logs, can be achieved in the prior art.

[0003] For example, it is known in the prior art to arrange freely swinging flails in a rotor section. The flails are ultimately designed as comminution tools.

[0004] In a first rotor shape, it is known that four rotor sections of at least substantially identical design are provided, with a plurality of flails arranged in each rotor section. Thus, the flails can be arranged one behind the other in the direction of the rotor's rotational axis. Consequently, a row of flails can be formed in one rotor section. In particular, only one row of flails is provided in one rotor section, with the flails in a row being arranged one behind the other in the direction of the rotor's rotational axis, but not adjacent to one another in the circumferential direction of the rotor.

[0005] The aforementioned rotor shape is particularly advantageous for shredding waste wood or for use in waste wood processing. The flails reduce the susceptibility to failure during shredding, as the flails' free-swinging arrangement allows them to deflect high forces. This is particularly advantageous when shredding waste wood that may contain contaminants such as metal profiles, metal components, etc., which the flails can then deflect. This rotor design is also referred to as a "flail drum."

[0006] Another rotor design allows for the use of ripper teeth in addition to the rows of flails. This rotor design requires a different rotor construction, as the freely swinging flails are arranged in two rotor sections, and the ripper teeth are arranged on the walls of the rotor in two further rotor sections, particularly between the two rows of freely swinging flails. The use of ripper teeth enables advantageous shredding of logs. The ripper teeth can have a smaller effective radius than the free flails, thus producing coarser and more structured material. This is advantageous for shrubby material and logs.

[0007] In the current state of the art, both rotor types—the flail drum and the rotor with ripper teeth—are typically available in a single operation. For example, if material with a higher proportion of contaminants, such as metal components, etc., is to be processed, the flail drum is used. For example, if logs or shrubby material are to be shredded, the rotor can be exchanged to ensure optimal adaptation to different feed materials.

[0008] A disadvantage is that different rotor shapes must be kept on hand for different shredding tasks or different feed materials, which also requires a lot of storage space. Replacing the rotor is also relatively complex and requires the use of appropriate lifting equipment, so this laborious replacement is generally avoided.

[0009] The object of the present invention is to avoid the aforementioned disadvantages of the prior art or at least to substantially reduce them.

[0010] The above-mentioned object is at least essentially achieved by a ripper tooth arrangement of a comminution device for comminution of feed material, in particular for use in wood recycling and / or for waste wood processing, with the features of claim 1.

[0011] Waste wood processing is a particularly important form of processing in wood recycling. Furthermore, the ripper tooth arrangement according to the invention can also be used to treat logs. Thus, in addition to shredding logs, the ripper tooth arrangement also enables efficient shredding of waste wood, especially those containing contaminants or impurities.

[0012] The ripper tooth arrangement according to the invention is intended for attachment to a rotor having a plurality of rotor sections. In the rotor, a bearing axis extending at least substantially parallel to the rotor rotation axis is provided in each rotor section. According to the invention, at least one ripper tooth is provided that can be mounted at least indirectly on the bearing axis of a rotor section.

[0013] The invention provides the advantage that the ripper tooth can be mounted at least indirectly on the bearing axis of a rotor section. This bearing axis can thus be used, as needed, to support a freely oscillating flail or a ripper tooth. Rippers that can be mounted on bearing axis of a rotor section are unknown in practice. The invention now offers the particularly advantageous possibility of using either freely oscillating flails or ripper teeth in a rotor section, as needed. Accordingly, different rotors no longer need to be kept on hand for different feed materials. According to the invention, a "standard rotor" from the prior art, which can be used to support freely oscillating flails, can now also be used to support ripper teeth, if needed. The bearing axis of a rotor section is also used to support the ripper tooth.The ripper tooth no longer has to be mounted on a wall in the wall section as is the case in practice, but the mounting is achieved by arranging it on the bearing axis, which can then absorb the forces acting on the ripper tooth.

[0014] In this way, a rotor that only has pivoting flails can be converted by dismantling flails in a rotor section and installing at least one ripper tooth assembly. In particular, it is no longer necessary to keep different rotors on hand for different feed materials. By installing ripper tooth assemblies, the rotor can also be used to shred logs. If the rotor is to process waste wood, for example, the ripper tooth assemblies can be removed and the flails reinstalled on the bearing axle. The storage capacity for keeping an additional rotor in stock can thus be reduced. Ripper tooth assemblies and flails only need to be kept on hand for the provision of different rotors.

[0015] The ripper tooth arrangement according to the invention now makes it possible to replace the flails as needed and thus to adapt the rotor to different shredding tasks relatively easily.

[0016] In particular, the ripper tooth can be arranged on the bearing axis in such a way that it can be connected to the rotor in a rotationally fixed manner. As the rotor rotates, the ripper tooth also rotates. However, the ripper tooth is not pivotably mounted relative to the bearing axis, as can, in particular, the flails. The ripper tooth can thus be firmly connected to the rotor and / or the bearing axis of a rotor section.

[0017] Each rotor section preferably has a single bearing axis that can extend along the length of the rotor. Accordingly, it can preferably result that a bearing axis can extend over the length of the rotor, wherein the length of the rotor can in particular be at least substantially parallel to the rotor rotation axis. Consequently, each rotor section can have a single bearing axis, wherein a bearing axis can be provided and / or designed to support a plurality of ripper tooth arrangements. In particular, a plurality of rippers can be mounted on a bearing axis. The rotor sections of a rotor can in particular extend over at least 60° of the circumference of the rotor, viewed in cross-section. In particular, each rotor section takes up at least substantially a quarter of the cross-section of the rotor, so that in particular viewed in cross-section the rotor section extends over at least substantially 90° of the circumference of the rotor.Accordingly, four rotor sections, each with a bearing axle, are provided. However, the number of rotor sections can also vary, especially if a larger number of ripper tooth arrangements or flails is to be provided as needed. It goes without saying that not every rotor section needs to have a ripper tooth arrangement or flail. "Free" rotor sections can also be provided depending on different shredding tasks.

[0018] Another advantage is that if the ripper tooth wears, it can be replaced relatively easily without having to replace the entire rotor. This is achieved by mounting the ripper tooth on the bearing axle. The ripper tooth is detachably connected to the bearing axle, allowing it to be assembled and disassembled—either for replacement with a flail or for renewing the ripper tooth.

[0019] Overall, the invention therefore provides the possibility of easily adapting the rotor of a comminution device to different comminution tasks and thus achieves in particular the best possible output of the comminuted feed material depending on the desired comminution.

[0020] In a particularly preferred embodiment, at least one clamping device of the ripper tooth arrangement is provided for at least indirectly clamping the ripper tooth in and / or on the rotor section. The clamping device can particularly preferably be provided for the rotationally fixed arrangement of the ripper tooth on the bearing axis of the rotor section or for the rotationally fixed arrangement of the ripper tooth on the rotor section.

[0021] According to the invention, the clamping device provides a simple way of detachably connecting the ripper tooth arrangement in or on the rotor section, wherein the ripper tooth arrangement can be assembled or disassembled as required by tightening and loosening the clamping device. The clamping device also makes it possible to adapt the ripper tooth arrangement to slightly different rotor sections, in which the clamping device is, in particular, at least substantially individually adjustable. This can be provided in particular to compensate for manufacturing tolerances. For example, the clamping device can interact with the ripper tooth for clamping. The clamping device can be arranged directly on the ripper tooth, but this does not have to be the case. In any case, the clamping device interacts with the ripper tooth for clamping. Furthermore, the clamping force does not have to act directly on the ripper tooth.In particular, the clamping device prevents the ripper tooth from rotating relative to the bearing axis during use of the shredding device. The clamping device particularly preferably enables a rotationally fixed arrangement on the bearing axis of the rotor section.

[0022] Furthermore, in a further preferred embodiment of the inventive concept, the ripper tooth is connected and / or connectable to a connecting means of the ripper tooth arrangement, which is connected and / or connectable to the bearing axis. The connecting means can in particular be designed in a bow-like manner. Thus, the ripper tooth can be indirectly connected to the rotor, wherein the connecting means can be provided between the ripper tooth and the rotor section. The forces acting on the ripper tooth in use can thus be transmitted to the respective rotor section via the connecting means. The ripper tooth can be formed integrally with the connecting means.

[0023] Alternatively or additionally, it is also possible for the ripper tooth to be connected and / or connectable to the connecting means in a force-fitting and / or form-fitting manner. Particularly preferably, a detachable connection is provided between the ripper tooth and the connecting means, so that, in particular, the ripper tooth is arranged on the connecting means in a replaceable manner. Such an arrangement enables, in particular, the replacement of the ripper tooth in the event of wear, particularly preferably without having to loosen the connecting means or the fastening of the connecting means to the rotor section.

[0024] In particular, the connecting means can be clamped in the rotor section via the clamping means and thus lead to the clamping of the ripper tooth.

[0025] Furthermore, the connecting means can preferably have a through-opening for the bearing spindle. The bearing spindle is preferably arranged in the through-opening at least substantially free of play. In this context, the term "at least substantially free of play" is to be understood to mean that the connecting means can still be clamped in the rotor section, particularly in the circumferential direction. Thus, in particular, the clamping means can be arranged at a first end of the connecting means. The end of the connecting means opposite the first end can also be clamped. Two clamping means can also be arranged on the connecting means.Furthermore, a play-free arrangement of the bearing axis in the through-hole is to be understood as meaning that the outer diameter of the bearing axis is smaller than the inner diameter of the through-hole, whereby the through-hole can be adapted, in particular, to the outer shape of the bearing axis. However, the bearing axis can be arranged in the through-hole in such a way that, if necessary, a displacement or movement of the connecting element along the bearing axis is still possible for replacing the ripper tooth arrangement.

[0026] Furthermore, at least two ripper teeth are particularly preferably arranged on the connecting means. The ripper teeth can be arranged, in particular, on opposite side surfaces of the connecting means. The ripper teeth can be arranged parallel to one another or offset from one another, in particular offset one behind the other with respect to the direction of rotation of the rotor.

[0027] An offset arrangement of the ripper teeth enables, in particular, a loosening of the shredded material and a corresponding re-gripping via the offset ripper tooth of the shredded material that may not have been shredded by the other ripper tooth.

[0028] However, a parallel arrangement of the ripper teeth also offers the advantage that the material to be shredded can be shredded simultaneously by both ripper teeth, in particular, thereby increasing the force exerted on the feed material for shredding. Both a parallel and a staggered arrangement of the ripper teeth can be realized, in particular, according to the invention.

[0029] In particular, the connecting means is designed in such a way that the ripper teeth can be arranged both parallel and offset to one another on the same connecting means, wherein, preferably, a change from the offset to the parallel arrangement and vice versa can also be made by an exchangeable arrangement of the ripper teeth.

[0030] The ripper teeth can, in particular, have an at least substantially sickle-like configuration in the upper end region, which may include the cutting edge. Furthermore, the orientation of these sickle-like sections can point at least substantially in the same direction, even in the offset arrangement. Thus, the ripper teeth can be concave in the upper end region in the direction of rotation of the rotor.

[0031] In a further preferred embodiment, the connecting means is designed such that the rotor section is at least substantially spanned by the connecting means in the circumferential direction. The rotor section can have, in particular, a limiting section, in particular in the form of a tube or a wall, at each of its end regions. The connecting means can then extend between the two limiting sections. In particular, the connecting means is also clamped to these limiting sections via the clamping means or is arranged at least substantially directly on the limiting sections. The connecting means can project beyond the limiting sections in some regions, in particular. Furthermore, a wall section can be arranged on each of the limiting sections to separate the rotor sections, wherein the wall section can preferably extend as far as a shaft of the rotor.The shaft is in particular rotatably mounted and is intended to drive the rotor.

[0032] As explained above, it is particularly preferred that the clamping means be arranged on the connecting means. The clamping means can be arranged on at least one end region of the connecting means. A further clamping means can be arranged on the end region of the connecting means opposite the end region, but this is not required. The end region of the connecting means opposite the end region can, in particular, directly abut the boundary section of the rotor section and be clamped relative to or on the boundary section.

[0033] Furthermore, in another preferred embodiment, the connecting means is designed such that it has a plurality of fastening openings for arranging at least one screw connection for fastening the ripper tooth. In particular, multiple screw connections can also be provided for fastening a ripper tooth. The multiple screw connections also allow the rippers to be arranged at different positions along the connecting means, so that, particularly preferably, the distance between the rippers can also be optionally varied.

[0034] In particular, the number of mounting holes exceeds the number of screw connections for the ripper tooth or teeth.

[0035] In a further preferred embodiment, although a screw connection can be arranged in each fastening opening, this screw connection can then also connect the ripper tooth arranged on the opposite side surface to the connecting means. Preferably, at least two screw connections are provided for each ripper tooth. Particularly preferably, the ripper tooth can be mounted in different positions on the connecting means. This is made possible by the fact that the number of fastening openings on one side surface exceeds the number required for attaching the ripper tooth to the connecting means via screw connections. This ensures that the ripper teeth can be arranged either offset or parallel on the connecting means.

[0036] As previously explained, the ripper tooth can particularly preferably be connected to the connecting means using multiple screw connections. A screw connection of a ripper tooth can also be designed to fasten a ripper tooth arranged on an opposite side surface of the connecting means.

[0037] If the screw connections are, in particular, at least substantially identical in design, spacer plates can be provided that can bridge the gap of a missing ripper tooth. Thus, a screw connection can be designed to pass through the connecting means and through two ripper teeth. However, if the screw connection is only guided through the connecting means and one ripper tooth, the spacer plate can be arranged on the side surface opposite the side surface on which the ripper tooth is arranged, so that the screw connection is then guided through the connecting means, one ripper tooth, and the spacer plate. Accordingly, there is no need to provide screw connections of different lengths.

[0038] It is understood that in particular the spacer plate also has at least one through-opening for the screw connection.

[0039] The fastening of two ripper teeth via a screw connection enables in particular a fixed arrangement of the ripper teeth on the connecting means and also reduces the number of screw connections, since one screw connection can be used to fasten two ripper teeth at the same time.

[0040] In a particularly preferred embodiment, the clamping device comprises a wedge to be clamped. The wedge can be designed to clamp the connecting device between two boundary sections of the rotor section. The wedge can then be adjusted or adjusted, particularly during assembly and disassembly, so that an optimal clamping position for the connecting device and, consequently, for the ripper tooth can be ensured.

[0041] Furthermore, the clamping means can have an adjusting element for adjusting the wedge relative to the connecting means. The adjusting element can, in particular, effect an adjustment of the wedge, in particular at a boundary section of the rotor section. The adjusting element can be fixedly arranged on the connecting means and / or connected to the wedge. The adjusting element thus enables adjustable clamping of the ripper tooth arrangement in the rotor section and, particularly preferably, a simple release of the clamping of the connecting means on or in the rotor section.

[0042] Particularly preferably, a threaded opening can be provided at and / or in the end region of the connecting means, wherein the adjusting element has an adjusting screw for interacting with the threaded opening. Through the interaction between the adjusting screw and the threaded opening of the connecting means, the wedge can then be adjusted, thus initiating a tension when arranged at the boundary sections of the rotor section. This tension can then be released again if necessary by loosening the adjusting screw in the threaded opening. In particular, the wedge can be arranged on the adjusting screw.

[0043] The ripper tooth preferably has a fastening section for attachment to the connecting means and a cutting section with at least one cutting edge, preferably having at least one cutting edge. The cutting section can protrude from the fastening section and / or the connecting means if required. A protruding arrangement of the cutting section ensures that the material to be shredded first strikes the cutting section, and the cutting section leads to the shredding of the feed material.

[0044] In a further preferred embodiment, the cutting section can be provided with a hardfacing at least in some areas. The hardfacing is, in particular, a welded overlay on the cutting section to increase wear resistance. Thus, the ripper tooth with a hardfacing can be used longer, since the ripper tooth in particular is subject to high material stresses during use.

[0045] The connecting element can have a beveled support surface at its end opposite the clamping element. A further clamping element can (but does not have to) be arranged on this support surface. The support surface can be positioned tangentially against a boundary section of the rotor section, thus enabling clamping.

[0046] Identical or different ripper teeth can be provided on a connecting element. The ripper teeth are designed, in particular, depending on the respective comminution task or the feed material to be comminuted. It can also be advantageous if at least two different ripper teeth are arranged on a connecting element. Thus, at least substantially identical or different ripper tooth arrangements can also be provided in a rotor section—each depending on the feed material to be comminuted.

[0047] The ripper tooth arrangement can be changed, in particular, by adjusting the ripper teeth on the connecting element, without the need for different components. This is ensured by the screw connection between the ripper tooth and the connecting element according to the invention.

[0048] Furthermore, the present invention also relates to a rotor for a comminution device for comminution of feed material. The comminution device is used in particular in wood recycling and / or waste wood processing. The rotor comprises a plurality of rotor sections, wherein a bearing axis extending at least substantially parallel to the rotor rotation axis of the rotor is provided in each rotor section. At least one ripper tooth arrangement according to one of the preceding embodiments is arranged on at least one bearing axis.

[0049] The bearing axis preferably extends at least substantially over the length of the rotor and can thus serve to support multiple ripper tooth arrangements. The length of the rotor, in particular, runs at least substantially parallel to the rotor rotation axis.

[0050] It is understood that with regard to preferred embodiments and further with regard to advantages of the rotor, reference may be made to the aforementioned statements regarding the ripper tooth arrangement, which also apply equally to the rotor according to the invention without the need for further explicit explanation. Furthermore, the statements regarding the rotor can also be applied to the ripper tooth arrangement according to the invention, in particular without the need for further explicit explanation.

[0051] In particular, a plurality of ripper tooth arrangements can be used in a rotor section. In particular, between 2 and 50, more preferably between 3 and 20, and especially between 4 and 15, ripper tooth arrangements are used in a rotor section.

[0052] Furthermore, as explained above, the rotor has a plurality of rotor sections. In particular, at least essentially four rotor sections are provided, which particularly preferably extend at least essentially over an equal portion in the circumferential direction of the rotor. Thus, viewed in cross-section, each rotor section can occupy at least essentially a quarter of the rotor. However, more or fewer than four rotor sections can also be provided.

[0053] It is understood that a bearing axis can be provided in each rotor section according to the invention. This bearing axis can optionally serve to support freely oscillating flails or ripper tooth arrangements according to the invention. Accordingly, a rotor can particularly preferably be provided which has only ripper tooth arrangements or at least one ripper tooth arrangement combined with at least one flail. The flails and the ripper tooth arrangements can be used in one rotor section or in separate rotor sections. It is particularly preferred that only flails or ripper tooth arrangements are used in each rotor section, but that the rotor has several rotor sections which comprise either flails or ripper tooth arrangements. A mixed arrangement is also possible.

[0054] Particularly preferably, two rotor sections have ripper tooth arrangements and two further rotor sections have freely swinging flails. These rotor sections can then be arranged alternately with one another, so that a rotor can be provided which has two rotor sections with ripper tooth arrangements clamped thereto and two further rotor sections in which freely swinging flails are arranged on the respective bearing axis. The rotor sections comprising the flails can be arranged alternately with the rotor sections with the clamped ripper tooth arrangements. This results in a rotor structure in the following manner: rotor section with flails - rotor section with ripper tooth arrangements - rotor section with flails - rotor section with ripper tooth arrangements.

[0055] According to the invention, it is furthermore possible to ensure simple assembly and disassembly of both the flails and the ripper tooth arrangements to be clamped in and / or on the rotor section.

[0056] The rotor sections can be separated from each other by boundary sections. These boundary sections can comprise a tube or similar element, particularly in the upper end area. A wall can then also be connected to the tube. This wall can, but does not have to, be continuous.

[0057] It is understood that a plurality of pivotably mounted flails are mounted on a further bearing axis, in particular with at least one ripper tooth arrangement being arranged in each of the two first rotor sections, and the pivotably mounted flails being arranged in two further rotor sections. As explained above, the first and further rotor sections can then be arranged alternately with one another, in particular to produce an optimal comminution result.

[0058] Furthermore, a rotor section can contain a plurality of segments arranged one behind the other in the direction of the rotor rotation axis, which segments can also be referred to as chambers. The segments can be separated from one another by partition wall sections extending in the radial direction of the rotor. In particular, at least one ripper tooth arrangement and / or at least one pivotable flail can then be arranged in at least one chamber.

[0059] Particularly preferably, only one ripper tooth arrangement or only one flail is arranged in each individual chamber. In particular, the ripper tooth arrangement is not mounted with or on the partition wall sections or clamped to them, but rather the ripper tooth arrangement is arranged on the boundary sections to which the partition wall sections are also connected.

[0060] The flail is also preferably not mounted on the partition wall section, but in particular in the free space of the respective segment or chamber, wherein the chambers are separated from one another via the partition wall sections, so that only one freely swinging flail is arranged in each chamber.

[0061] Furthermore, the present invention relates to a comminution device for comminution of feed material. The comminution device is used in particular in wood recycling and / or for waste wood processing. The comminution device further comprises a rotatably mounted rotor according to one of the aforementioned embodiments.

[0062] It is understood that with regard to the comminution device, reference may be made to the aforementioned explanations regarding the rotor and / or the ripper tooth arrangement, which also apply equally to the comminution device according to the invention. To avoid further unnecessary explanations, a repeat of these explanations will be omitted.

[0063] Furthermore, it is expressly pointed out that all the intervals mentioned above and below include all intermediate intervals and individual values ​​contained therein and that these intermediate intervals and individual values ​​are to be regarded as essential to the invention, even if these intermediate intervals or individual values ​​are not specifically specified in detail.

[0064] Further features, advantages and possible applications of the present invention will become apparent from the following description of exemplary embodiments with reference to the drawing and the drawing itself. All described and / or illustrated features, individually or in any combination, form the subject matter of the present invention, regardless of their summary in the claims or their reference back to them.

[0065] It shows: Fig. 1 is a schematic perspective view of a rotor known from the prior art with flails arranged on bearing axes, Fig. 2 is a schematic perspective view of a rotor known from the prior art with ripper tooth arrangements and flails mounted on bearing axes, Fig. 3 is a schematic perspective view of a rotor according to the invention, Fig. 4 is a schematic front view of the rotor shown in Fig. 3 illustrated rotor according to the invention, Fig. 5 a schematic sectional view of the Fig. 3 illustrated rotor according to the invention, Fig. 6 a schematic sectional view of a comminution device according to the invention, Fig. 7 a schematic perspective view of a ripper tooth arrangement according to the invention, Fig. 8 a schematic perspective view of a ripper tooth according to the invention, Fig. 9 a schematic perspective view of a connecting means according to the invention and Fig. 10 a schematic perspective view of the mounting of ripper tooth arrangements according to the invention.

[0066] The Fig. 1 and 2 show rotors 5 as they are known in practice. These rotors 5 are used for comminution devices 2.

[0067] For example, the Fig. 1 a rotor 5 with a plurality of flails 24, each arranged in a chamber or segment 25. The flails 24 are mounted freely swinging on a bearing axis 7. In the Fig. 1 In the embodiment shown, 4 bearing axes 7 are provided in each rotor section 4. In the Fig. 1 In the embodiment shown, the rotor sections 4 are separated from one another via limiting sections 31, wherein the limiting sections 31 can have a tube or the like as an upper limit.

[0068] To form the multiple chambers or segments 25, they are separated from one another by partition wall sections 26. The partition wall sections 26 can extend in the radial direction of the rotor 5.

[0069] The flails 24 can be used in particular for shredding waste wood. For this purpose, the flails 24 can cooperate with counter-shredding tools or teeth 28 and / or a baffle plate 29, which Fig. 1 not shown in detail. In practice, the Schlegel 24 is used more for processing waste wood than for shredding logs.

[0070] If logs are to be treated, it is known in practice to use a rotor 5, as used in the Fig. 2 shown. The Fig. 2 The rotor 5 shown has, in addition to flails 24, a plurality of ripper tooth arrangements 1. As a comparison of the Fig. 1 and 2 As is clear from the figure, different rotor shapes must be available for arranging the ripper tooth arrangements 1 on the rotor 5. This is due to the mounting of the ripper tooth arrangements 1 known from the prior art. In this context, Fig. 2 that the flails 24 are mounted in one rotor section 4 and the ripper tooth arrangements 1 are mounted in another rotor section 4. The ripper tooth arrangements 1 are mounted via a force-locking connection with the partition wall sections 26, which must have corresponding through-openings and sufficient stability for this purpose.

[0071] According to the invention, it is now provided that a ripper tooth arrangement 1, as shown in Fig. 7 shown schematically, mounted on a rotor 5 used only for Schlegel 24 from the prior art, which Fig. 3 schematically shows. It is not a complex adaptation of the Fig. 1 The rotor 5 shown is necessary for arranging the ripper tooth arrangements 1 according to the invention. Rather, only the flails 24 in at least one rotor section 4 need to be removed and the ripper tooth arrangements 1 according to the invention arranged there.

[0072] Consequently, the Fig. 3 the use and fastening of a ripper tooth arrangement 1 according to the invention to a rotor 5 rotatably mounted in the comminution device 2. The rotor 5 has a plurality of rotor sections 4, wherein in each rotor section 4 a bearing axis 7 is provided that runs at least substantially parallel to the rotor rotation axis 6 of the rotor 5. The ripper tooth arrangement 1 has at least one ripper tooth 8 that can be mounted at least indirectly on the bearing axis 7 of a rotor section 4.

[0073] In further embodiments, the bearing axis 7 can also be arranged obliquely to the rotor rotation axis 6, in particular enclosing an angle of a maximum of 20°, in particular a maximum of 10°, with the rotor rotation axis 6. According to the invention, this is also understood as an at least substantially parallel arrangement. Ultimately, an at least substantially parallel arrangement is understood to mean a completely parallel arrangement of the axes 6, 7, but also an oblique arrangement of the axes 6, 7 relative to one another up to an angle of, in particular, 10°.

[0074] The rotor 5 with the ripper tooth arrangements 1 is used in a shredding device 2 for shredding feed material 3, in particular for use in wood recycling and / or waste wood processing. A schematic sectional view of a shredding device 2 is shown in Fig. 6 shown.

[0075] Fig. 6 shows that for comminution on the rotor 5, flails 24 and ripper tooth arrangements 1 with ripper teeth 8 are provided.

[0076] The rotor 5, which can also be referred to as a drum, is driven, preferably rotationally driven. Accordingly, the rotor 5 is mounted, in particular, rotatably in the comminution device 2.

[0077] For comminution of the feed material 3, an impact plate 29 can be provided to interact with the flails 24 and the ripper tooth arrangements.

[0078] For fastening to the respective bearing point of the rotor 5, namely to the bearing axis 7, the flail 24, but also the ripper tooth arrangement 1, has a bearing bore in order to connect the flail 24 or the ripper tooth arrangement 1 to the bearing axis 7.

[0079] The comminution device 2 further has teeth 28 projecting from the impact plate 29. The comminution of the material 3 to be crushed ultimately takes place between the pivotable flails 24 or the ripper teeth 8 of the ripper tooth arrangements 1 and the teeth 28 of the impact plate 29.

[0080] Unlike the one in Fig. 2 In the rotor 5 shown, the ripper tooth arrangements 1 are no longer mounted on the partition walls 26, but on the bearing axis 7. A corresponding adaptation of the individual chambers / segments 25 specifically for the ripper tooth arrangements 1 can therefore be avoided.

[0081] Particularly preferably, limiting sections 31 are provided to separate the rotor sections 4, which may, for example, comprise a tube or the like. In addition to the bearing axis 7, these limiting sections 31 can also be used to support the ripper tooth arrangements 1, in particular by supporting the ripper tooth arrangements 1 on the limiting sections 31 and / or clamping them to them.

[0082] The ripper tooth 8 protrudes in particular over the other components of the ripper tooth arrangement 1, such as the Fig. 4 schematically in a front or front view.

[0083] The Fig. 4 further shows that the ripper tooth 8 is offset radially behind the tip of the flail 24, so that when the rotor 5 rotates, the material first strikes the flail tip and only then the ripper tooth 8. The offset is to be understood in relation to the envelope curves of the outermost point of the ripper tooth 8 and the flail 24 generated when the rotor 5 rotates. This can enable reduced wear of the ripper teeth 8. The flails 24, on the other hand, can avoid high process forces as needed due to their freely swinging arrangement.

[0084] In particular, the ripper tooth arrangement 1 is clamped in or on the rotor section 4. For at least indirectly clamping the ripper tooth 8 in and / or on the rotor section 4 and in particular for the rotationally fixed arrangement of the ripper tooth 8 on the bearing axis 7 of the rotor section 4, at least one clamping means 9 of the ripper tooth arrangement 1 can be provided. The clamping means 9 is in Fig. 7 shown in more detail. For bracing the ripper tooth arrangement 1, Fig. 7 In the illustrated embodiment, only one clamping device 9 is provided.

[0085] In further embodiments, however, several clamping means 9 can also be provided for a ripper tooth arrangement 1.

[0086] In the rotor section 4 itself, either only one or several ripper tooth arrangements 1 can be used, such as the Fig. 3 In particular, a ripper tooth arrangement 1 is arranged in each segment 25. In further embodiments, free segments 25 can also be provided without flails 24 or without ripper tooth arrangements 1.

[0087] Likewise, in the Fig. 3 In the exemplary embodiment shown, it is provided that either flails 24 or ripper tooth arrangements 1 are arranged in a rotor section 4. In further embodiments not shown in more detail, ripper tooth arrangements 1 can also be arranged in a rotor section 4 in addition to flails 24. The design of the rotor 5 is carried out in particular on the basis of the material 3 to be shredded. Thus, it is also possible for both flails 24 and ripper tooth arrangements 1 to be arranged on a bearing axis 7, in particular one flail 24, one ripper tooth arrangement 1, etc., one after the other.

[0088] For fastening the ripper tooth 8 to the bearing axis 7, a connecting means 10 can be provided, which Fig. 10 The connecting means 10 is connected or connectable to the bearing axis 7. The Fig. 10 The connecting means 10 shown is designed in the form of a bow. Fig. 7 shows that the ripper tooth 8 is connected and / or connectable to the connecting means 10 in a force-fitting manner, or in other embodiments not shown in detail in a form-fitting manner.

[0089] In particular, the connecting means 10 is supported on the bearing axis 7, wherein the connecting means 10 can have a through-opening 11 for passing the bearing axis 7, which through-opening is in the Fig. 7 und 9 To insert the bearing axle 7, Fig. 7 a sleeve 32 arranged in the through-opening 11 is shown, which in the case of Fig. 9 is not present in the embodiment provided. The sleeve 32 can optimize the passage of the bearing axis 7 and also the support on the bearing axis 7.

[0090] In the through opening 11, the bearing axis 7 is mounted at least substantially free of play.

[0091] Not shown in detail is that in a further preferred embodiment, the ripper tooth 8 is formed integrally with the connecting means 10. Several ripper teeth 8 can also be connected to the connecting means 10.

[0092] The Fig. 7 further shows that at least two ripper teeth 8 can be arranged on the connecting means 10, in particular on opposite side surfaces 12, 13 of the connecting means 10. If necessary, more than two ripper teeth 8 can be arranged on the connecting means 10. In the Fig. 7 In the embodiment shown, the fangs 8 are at least partially directly adjacent to the side surfaces 12, 13 of the connecting means 10.

[0093] The ripper teeth 8 can be arranged in different positions and / or different sides on the connecting means 10. The Fig. 7 shows that the rippers on the connecting means 10 are arranged offset from one another, and therefore in particular are not arranged parallel to one another on the side surfaces 12, 13. A parallel arrangement of the rippers 8, as is known for a ripper arrangement 1 in Fig. 2 is also possible with the ripper tooth arrangement 1 according to the invention, but is not shown in more detail.

[0094] The offset of the ripper teeth 8 of a ripper tooth arrangement 1 can relate to the direction of rotation of the rotor 5. Furthermore, the offset of the ripper teeth 8 is particularly adjustable or variable.

[0095] Preferably, the fangs 8 can be connected to the connecting means 10 in different positions. The connecting means 10 can be designed accordingly for this purpose.

[0096] Fig. 5 shows a sectional view of the Fig. 3 The connecting means 10 is designed such that the rotor section 4 is at least substantially spanned in the circumferential direction by the connecting means 10. The connecting section 10 connects in the Fig. 5 illustrated embodiment, the limiting sections 31 of the rotor section 4 with each other. The limiting section 31 can in particular, as shown in Fig. 10 shown, a tube 33 for arranging the connecting means 10 and a wall 35 adjoining the tube 33, which can extend to an inner shaft 35 of the rotor 5. The shaft 35 can be rotatably mounted.

[0097] Fig. 7 shows that the clamping means 9 is arranged on the connecting means 10. In addition, Fig. 7 further shown that the clamping means 9 is arranged on at least one end region 14 of the connecting means 10. The other end region 36 of the connecting means 10 can be arranged without clamping means 31 on the rotor section 4, preferably on the limiting section 31, in particular the tube 33, as the Fig. 5 shows.

[0098] Furthermore, Fig. 7 that at the other end region 36 of the connecting means 10, where no clamping means 9 is arranged, an opening 37 is provided for the external engagement of a tool. Using a suitable tool, the ripper tooth arrangement 1 can be disassembled via the opening 37 when the clamping means 9 is loosened.

[0099] In addition to this opening 37 for external tools, the connecting means 10 can have a plurality of fastening openings 15 for arranging at least one screw connection 16 for fastening the ripper tooth 8. The screw connections 16 inserted into the fastening openings 15 are in Fig. 7 The ripper tooth 8 can also have fastening openings 38 for the passage of the screw connections 16, which Fig. 8 shows in detail.

[0100] The number of fastening openings 15 of the connecting means 10 can exceed the number of screw connections 16 for the ripper tooth 8 or the ripper teeth 8 or the number of fastening openings 38 of a ripper tooth 8. However, several ripper teeth 8 can also be connected via a screw connection 16, which Fig. 7 shows. If screw connections 16 of the same type are used for fastening both one ripper tooth 8 and several ripper teeth 8, spacer plates 30 can be provided, as shown in Fig. 3 schematically shows. The spacer plate 30 can in particular be arranged on the opposite side surface 12 or 13, on which the ripper tooth 8 is not arranged.

[0101] Fig. 7 shows that the ripper tooth 8 is connected to the connecting means 10 by means of a plurality of screw connections 16, in particular wherein at least one screw connection 16 of a ripper tooth 8 is also designed for fastening a ripper tooth 8 arranged on the opposite side surface 12, 13 of the connecting means 10, as has been explained above.

[0102] Furthermore, the Fig. 7 that the clamping means 9 has a wedge 17 to be clamped. The clamping means 9 can further have an adjusting element 18 for adjusting the wedge 17 relative to the connecting means 10. The adjusting element 18 can be fixedly, but in particular movably, arranged on the connecting means 10 and connected to the wedge 17.

[0103] For the movement of the adjusting element 18 relative to the connecting means 10, a screw connection can be provided, according to which a threaded opening 19 is provided at the end region 14 of the connecting means 10, which serves to cooperate with a corresponding thread of the adjusting element 18. The threaded opening 19 is in Fig. 9 shown.

[0104] To cooperate with the threaded opening 19, the adjusting element 18 can have an adjusting screw 20. The wedge 17 can in turn be arranged on the adjusting screw 20, which Fig. 7 Accordingly, the wedge 17 can be adjusted by adjusting the adjusting screw 20 in the threaded opening 19, or its height position relative to the connecting means 10 or its distance from the connecting means 10 can be changed.

[0105] Fig. 8 shows that the ripper tooth 8 has a fastening section 21 for fastening to the connecting means 10 and a cutting section 22 with at least one cutting edge 23, in particular a cutting edge. Fastening openings 38 for passing the screw connections 16 through can be provided in the fastening section 21. The cutting section 22 protrudes from the fastening section 22 or from the connecting means 10 in the assembled state, which Fig. 7 shows.

[0106] Fig. 8 further shows that a hardfacing 39 is provided at least in some areas on the cutting section 22. The hardfacing 39 increases wear resistance and can, in particular, be designed as a welded overlay.

[0107] In addition, Fig. 7 that the connecting means 10 has a bevelled support surface 27 at its end opposite the clamping means 9 or at the other end region 36. The support surface 37 can serve for the arrangement and for clamping with a limiting section 31, wherein this is Fig. 5 is presented in more detail. The Fig. 5 shows that the support surface 27 is arranged tangentially to the limiting section 31 and thus serves in particular as an abutment for the clamping achieved with the clamping device 9.

[0108] Furthermore, the present invention relates to a rotor 5 of a comminution device 2 for comminution of feed material 3, in particular for use in wood recycling, with a plurality of rotor sections 4. The rotor 5 is shown in detail in Fig. 3 shown for one embodiment.

[0109] With regard to preferred embodiments of the comminution device 2, reference may be made to the above statements, which apply equally to the comminution device 2 and the rotor 5 itself.

[0110] Fig. 3 shows that in each rotor section 4, a bearing axis 7 is provided, extending at least substantially parallel to the rotor rotation axis 6 of the rotor 5, wherein at least one ripper tooth arrangement 1 according to one of the previously discussed embodiments is arranged on at least one bearing axis 7. The bearing axis 7 extends in particular over the length of the rotor 5, wherein the length of the rotor 5 extends in particular at least substantially parallel to the rotation axis or rotor rotation axis 6.

[0111] The Fig. 10 shows particularly clearly the arrangement of the ripper tooth arrangements 1 on the limiting sections 31 and the bearing axis 7. To illustrate the bearing, the (front) end plate 40 of the rotor 5 has been omitted.

[0112] Fig. 10 further shows that a plurality of pivotably mounted flails 24 are mounted on at least one further bearing axis 7. Thus, rotor sections 4 with ripper tooth arrangements 1 and further rotor sections 4 with flails 24 can be provided.

[0113] In particular, at least one ripper tooth arrangement 1 is arranged in each of the two first rotor sections 4 and the pivotably mounted flails 24 are arranged in two further rotor sections 4. In the Fig. 10 It is also shown that the first and the further rotor sections 4 are arranged alternately to one another.

[0114] As explained previously, the Fig. 6 in a sectional view of a comminution device 2 for comminution of feed material 3, in particular for use in wood recycling, with a rotatably mounted rotor 5 according to one of the aforementioned embodiments.

[0115] With regard to the comments on comminution device 2, reference may be made to the previous submission, which applies equally to comminution device 2. Bezugszeichenliste:

[0116] 1 Ripper tooth arrangement 2 Shredding device 3 Feed material 4 Rotor section 5 Rotor 6 Rotor rotation axis 7 Bearing axis 8 Ripper tooth 9 Clamping device 10 Connecting device 11 Through opening of 10 12 Side surface of 10 13 Side surface of 10 14 End area of ​​10 15 Fastening opening of 10 16 Screw connection 17 Wedge of 9 18 Adjusting element of 9 19 Threaded opening of 10 20 Adjusting screw of 20 21 Fastening section of 8 22 Cutting section of 8 23 Cutting edge of 22 24 Flail 25 Segment 26 Partition section 27 Support surface of 10 28 Teeth 29 Impact plate 30 Spacer plate 31 Limiting section 32 Sleeve 33Pipe 34Wall 35Shaft 36Other end area of ​​10 37Opening 38Mounting opening of 8 39Armouring 40End plate

Claims

1. Ripper tooth arrangement (1) of a comminution device (2) for comminution of feed material (3), in particular for use in wood recycling, provided for attachment to a rotor (5) having a plurality of rotor sections (4), in which a bearing axis (7) extending at least substantially parallel to the rotor rotation axis (6) of the rotor (5) is provided in each rotor section (4), characterized by that at least one ripper tooth (8) which can be mounted at least indirectly on the bearing axis (7) of a rotor section (4) is provided.

2. Ripper arrangement according to claim 1, characterized in that at least one clamping means (9) of the ripper tooth arrangement (1) is provided for at least indirectly clamping the ripper tooth (8) in and / or on the rotor section (4) and in particular for the rotationally fixed arrangement of the ripper tooth (8) on the bearing axis (7) of the rotor section (4).

3. Fang arrangement according to claim 1 or 2, characterized in thatthe ripper tooth (8) is connected and / or connectable to a connecting means (10) of the ripper tooth arrangement (1) which is connected and / or connectable to the bearing axis (7), in particular in a bow-like manner, in particular wherein the ripper tooth (8) is formed in one piece with the connecting means (10) and / or is connected and / or connectable to the connecting means (10) in a force-fitting and / or form-fitting manner and / or in particular wherein the connecting means (10) has a through-opening (11) for the bearing axis (7) and / or in particular wherein the bearing axis (7) can be arranged in the through-opening (11) at least substantially free of play.

4. Fang arrangement according to one of the preceding claims, characterized in that at least two ripper teeth (8) can be arranged on the connecting means (10), in particular on opposite side surfaces (12, 13) of the connecting means (10).

5. Ripper arrangement according to one of the preceding claims, characterized in thatthe connecting means (10) is designed such that the rotor section (4) is at least substantially spanned by the connecting means (10) in the circumferential direction.

6. Ripper arrangement according to one of the preceding claims, characterized in that the clamping means (9) is arranged on the connecting means (10), in particular wherein the clamping means (9) is arranged on at least one end region (14) of the connecting means (10).

7. Ripper arrangement according to one of the preceding claims, characterized in that the connecting means (10) has a plurality of fastening openings (15) for arranging at least one screw connection (16) for fastening the ripper tooth (8), in particular wherein the number of fastening openings (15) exceeds the number of screw connections (16) for the ripper tooth (8) or the ripper teeth (8) and / or in particular wherein the ripper tooth (8) can be mounted in different positions on the connecting means (10).

8. Ripper arrangement according to one of the preceding claims, characterized in that the ripper tooth (8) is connected to the connecting means (10) by means of a plurality of screw connections (16), in particular wherein at least one screw connection (16) of a ripper tooth (8) is also designed for fastening a ripper tooth (8) arranged on the opposite side surface (12, 13) of the connecting means (10).

9. Fang arrangement according to one of the preceding claims, characterized in that the clamping means (9) has a wedge (17) to be clamped.

10. Ripper arrangement according to one of the preceding claims, characterized in thatthe clamping means (9) has an adjusting element (18) for adjusting the wedge (17) relative to the connecting means (10), in particular wherein the adjusting element (18) is fixedly arranged on the connecting means (10) and is connected to the wedge (17), and / or that a threaded opening (19) is provided at the end region (14) of the connecting means (10), wherein, preferably, the adjusting element (18) has an adjusting screw (20) for interacting with the threaded opening (19), in particular wherein the wedge (17) is arranged on the adjusting screw (20).

11. Fang arrangement according to one of the preceding claims, characterized in thatthe ripper tooth (8) has a fastening section (21) for fastening to the connecting means (10) and a cutting section (22) with at least one cutting edge (23), in particular a cutting edge, in particular wherein the cutting section (22) protrudes from the fastening section (22) and / or from the connecting means (10) and / or in particular wherein an armouring (39) is provided at least in some areas on the cutting section (22).

12. Ripper arrangement according to one of the preceding claims, characterized in that the connecting means (10) has a bevelled support surface (27) at its end opposite the clamping means (9).

13. Rotor (5) of a comminution device (2) for comminution of feed material (3), in particular for use in wood recycling, with a plurality of rotor sections (4), wherein in each rotor section (4) a bearing axis (7) extending at least substantially parallel to the rotor rotation axis (6) of the rotor (5) is provided, wherein at least one ripper tooth arrangement (1) according to one of claims 1 to 12 is arranged on at least one bearing axis (7), preferably extending over the length of the rotor (5).

14. Rotor according to claim 13, characterized in that a plurality of pivotably mounted flails (24) are mounted on at least one further bearing axis (7), in particular wherein at least one ripper tooth arrangement (1) is arranged in each of two first rotor sections (4) and the pivotably mounted flails (24) are arranged in two further rotor sections (4), wherein, preferably, the first and the further rotor sections (4) are arranged alternately with one another.

15. Shredding device (2) for shredding feed material (3), in particular for use in wood recycling, with a rotatably mounted rotor (5) according to claim 13 or 14.

Images