Rotary device

Abstract

Rotary device (1) in particular intended for use as a shredding roller (2) for a shredding device (3), as a deflecting drum (7) for a conveyor belt (8), as a milling roller (4) for a milling device and / or as a transfer roller (5) for a transfer unit (6), with a roller body (9) designed as a hollow body and rotatable about an axis of rotation and a drive shaft device (11) at least indirectly connected to the roller body (9) for transmitting a rotary motion to the roller body (9), wherein the drive shaft assembly (11) comprises a first shaft section (12) and a second shaft section (13), wherein the first and the second shaft sections (12, 13) are at least partially arranged in the roller body (9) and preferably each project from the end face of the roller body (9), wherein at least one transmission device (14) arranged in the roller body (9) and frictionally connected to the roller body (9) is assigned to each of the first and the second shaft sections (12, 13) for transmitting the rotary motion from the respective shaft section (12, 13) to the roller body (9), wherein the transmission devices (14) with the shaft sections (12, 13) assigned to them each form a friction drive for the roller body (9), wherein the transmission device (14) comprises an elastic damping element (16) and a connecting element (17) firmly connected to the damping element (16), wherein the connecting element (17) is rotationally fixed to the respective shaft section (12, 13) and wherein the damping element (16) is designed as a hollow body that can be filled with a medium.

Description

[0001] The present invention relates to a rotary device comprising a roller body designed as a hollow body and rotatable about an axis of rotation, and a drive shaft assembly at least indirectly connected to the roller body for transmitting a rotary motion to the roller body. In this context, it may be provided that the drive shaft assembly is connected to a drive motor. The rotary device can be used, in particular, as a shredding roller for a shredding device, as a deflection drum for a conveyor belt, as a milling roller for a milling device, and / or as a transfer roller for a preferably mobile transfer unit.

[0002] Rotary devices of the aforementioned type are used for various purposes. In such rotary devices, it is provided that a rotary movement of the roller body can be effected by transmitting the torque or rotary motion from the drive shaft assembly or the drive shaft itself. According to the invention, the rotary device comprises both the drive shaft assembly and the roller body. In the prior art, the drive shaft assembly has a drive shaft that is non-rotatably connected to the roller body.

[0003] During operation, the roller body, and consequently the rotating mechanism, is subjected to high stresses. To prevent machine damage, it is sometimes implemented in practice that the roller body can perform an elastic flexion movement to counteract high process forces. In the prior art, this elastic mounting is implemented such that the drive shaft, together with the drive motor, is elastically mounted. Such an elastic mounting of the drive unit is disclosed, for example, in DE 10 2017 001 813 B3. DE 10 2017 001 813 B3 relates to a comminution device with a comminution roller driven by a drive unit, wherein the drive unit is elastically mounted. This elastic mounting is designed such that the comminution roller and the drive unit are connected as a common assembly with at least one damping device, which is elastically mounted in or on the frame.

[0004] In connection with the elastic mounting of the entire drive unit, it has been observed that the drive motor is subject to vibrations. Depending on the specific application, this can lead to damage to the drive motor. Furthermore, ensuring proper elastic mounting of the entire drive unit requires significant technical effort. Overall, this type of mounting results in an increased susceptibility to damage to the drive motor.

[0005] Alternatively, it is also known in the prior art to design the entire rotary device structure to be so robust and stable that even the highest process forces can be absorbed. However, this variant involves comparatively high material costs and effort, as a particularly stable and structurally over-dimensioned material is required, which is also suitable for the long-term use of the rotary device.

[0006] However, in practice, an elastic deflection of the crushing roller is preferable to a robust design of the entire device, so that DE 10 2017 001 813 B3 already offers significant advantages over a merely robust design of the entire machine, as also shown by DE 10 2017 001 813 B1 itself.

[0007] DE 20 2016 100 128 U1 relates to a rotary device with a roller body designed as a hollow body and rotatable about a rotary axis and a drive shaft device connected at least indirectly to the roller body for transmitting a rotary motion to the roller body.

[0008] The present invention aims to avoid or at least substantially reduce the aforementioned disadvantages. In particular, the rotary device of the aforementioned type, which can perform an elastic evasive movement, is to be improved, preferably based on DE 10 2017 001 813 B3.

[0009] The aforementioned problem is solved by a rotary device according to claim 1.

[0010] In a rotary device of the type mentioned above, the invention provides that the drive shaft assembly comprises a first shaft section and a second shaft section. The first shaft section and the second shaft section are at least partially arranged in the roller body and preferably each project from the end face of the roller body. At least one shaft section preferably projects from the end face of the roller body.

[0011] Furthermore, it is provided that at least one transmission device arranged in the roller body and frictionally connected to the roller body is assigned to the first and second shaft sections for the transmission of the rotary motion from the respective shaft section to the roller body, wherein the transmission devices with the shaft sections assigned to them each form a friction drive for the roller body.

[0012] According to the invention, it can be provided that the transmission devices are arranged, in particular at least in the end region of the roller body.

[0013] The transmission device allows the rotary motion to be transferred from the shaft sections to the rotary device, or in particular to the roller body.

[0014] According to the invention, it is particularly possible to ensure the transmission of the rotary motion to the roller body by means of a friction drive, wherein the rotary motion is transmitted from the shaft sections to the transmission devices connected to the shaft sections via friction to the roller body. In particular, the transmission devices are connected to the roller body neither by positive locking nor by material locking, but in particular only by friction locking.

[0015] The friction drive allows, for example, the drive shaft assembly to continue rotating (without causing the drive motor to slip) even if the roller body has become stuck, jammed, or blocked. In such cases, the friction drive prevents any further rotational movement from being transmitted to the stationary roller body. Because the roller body and the transmission components are preferably not positively engaged, serious machine damage can be avoided if the transmission components slip. This also prevents the roller body from being rotated or driven further, even under high loads. Ultimately, the transmission of the roller body's rotational movement can then be interrupted.

[0016] Preferably, the transmission devices enable elastic mounting of the roller body. In particular, the transmission devices can be designed to be elastic, at least in certain areas, so that, preferably, evasive movements of the roller body can be carried out in the event of overload. In this way, the invention also provides the possibility of counteracting machine damage.

[0017] In particular, machine damage can even be avoided, which would otherwise be caused, for example, by the roller becoming jammed. Jamming or wedging of the roller can occur in practice due to various incidents. For example, if the rotating device is used as a shredding roller, material to be shredded can become lodged between shredding tools arranged on the roller and counter-shredding tools, preventing the shredding roller from rotating. This would constitute an overload situation.Depending on the force required to release this wedging, the friction drive according to the invention can, if necessary, be designed such that no further comminution of the wedged material is attempted, but rather the frictional connection to the drive of the roller body is ultimately interrupted, and the transmission devices in the roller body rotate, but without transmitting the rotary motion to the roller body. According to the invention, this ensures that, for example, the machine can be switched off and operating personnel can manually release the material being comminuted and / or reverse the direction of rotation of the roller.If the transmission devices are designed to be elastic, even a slight deflection of the roller body can cause the material, for example wedged in place, to fall through the space between the shredding tool and the counter-shredding tools, provided that the rotary device is used as a shredding roller.

[0018] However, the interrupted transmission of the rotary motion, due to the inventive design of the frictional connection or the frictional drive, also proves advantageous for other rollers, for example, a transfer roller, a milling roller, and / or a deflection drum. All rollers or drums (a drum is also considered a roller within the meaning of the present invention) have in common that they are subjected to high stresses during use. In such cases, it can be advantageous that the rotary motion of the roller body is stopped under particularly high stresses that would otherwise lead to damage to the drive mechanism or the drive motor.According to the invention, to stop this rotary motion, it is no longer necessary to completely switch off the machine - although this can also be done - but rather, through the friction drive for torque transmission, an interruption of the transmission of the rotary motion can be achieved in the case of particularly high process forces.

[0019] The transmission of rotary motion according to the invention is, on the one hand, comparatively simple to implement, and on the other hand, also offers particular technical advantages. For example, elastic mounting of the drive motor or the drive shaft assembly can be avoided, thereby reliably preventing machine damage to the drive motor due to vibrations or the like. Furthermore, a complexly constructed elastic mounting of the drive shaft or the drive motor can be eliminated.

[0020] Preferably, the friction drive provided by the transmission devices can also be arranged entirely inside the roller body. This has the advantage that this drive is no longer located in the "dirty area." In a rotary device, the dirty area is the area that comes into contact with the material being treated or processed. In this context, it is understood that, according to the invention, the friction drive is to be understood as the drive of the roller body via the transmission device(s). Even if the transmission devices—and thus, according to the present invention, the friction drive—can be arranged entirely inside the roller body, the drive can still be located within the roller body.The drive motor for the friction drive can also be arranged outside the roller body, in particular on at least one shaft section of the drive shaft assembly. The drive shaft assembly therefore does not have to be located entirely inside the roller body, but it can be. Similarly, a drive motor can be located inside the roller body, but it does not have to be.

[0021] In the case of a shredding roller, this would be, for example, the outer surface of the shredding roller, which faces directly into the shredding chamber and thus also into the material being shredded. In the case of a transfer roller, this would be the area that comes into contact with the bulk material being transferred. According to the invention, contact between the drive and unwanted dirt particles can therefore be avoided, in particular, by protecting the roller body and by arranging the transmission devices internally within the hollow space of the roller body.

[0022] According to the invention, the transmission device comprises an elastic damping element and a connecting element rigidly connected to the damping element. The connecting element is rotationally fixed to the respective shaft section. The elastic damping element ensures elastic damping of the roller body during operation of the rotary device, thereby enabling, in particular, a compensatory movement in the event of an overload. The damping element is preferably annular and / or flexible. A wheel tire, preferably a truck tire, is particularly preferred as the damping element. The connecting element can be designed, in particular, as a wheel, preferably as a wheel consisting of a wheel disc or rim, a wheel flange, and a rim. Preferably, the damping element is rotationally fixed to the connecting element.Accordingly, the rotational movement of the shaft section, which can be caused, for example, by a drive motor, can be transmitted to the roller body by friction through the rotationally fixed connection between the respective shaft section and the transmission device assigned to the shaft section - and thus also through the connecting means and the damping means.

[0023] The elasticity or stiffness of the damping material is then determined in particular by a suitable choice of material, which can in any case include a flexible plastic, rubber, latex or mixtures thereof.

[0024] Preferably, the elastic damping element can be used to dampen the roller body. Therefore, an elastic mounting of the drive shaft or the entire drive assembly can be omitted. According to the invention, the components of the drive shaft assembly can be protected from wear, since the friction drive preferably significantly reduces the wear of these components, as they are not exposed to the high process forces in the event of an overload. In the event of an overload, the roller body preferably comes to a standstill, while the transmission device (and the entire drive shaft assembly) continues to rotate.

[0025] Ultimately, the frictional connection can be influenced by the design of the damping element, for example the width of the damping element and / or the surface finish of the damping element.

[0026] The aforementioned design of the transmission device according to the invention can thus reinforce the advantages described above in a special way, in particular improving the long-term, low-wear use of the entire rotary device.

[0027] According to the invention, the damping element is designed as a hollow body that can be filled with a medium, preferably air. In this context, it can be provided, for example, that the damping element has at least substantially the shape and / or design of a wheel tread. Other designs and shapes of the damping element are also conceivable. The hollow body design offers the particular advantage that the damping element can be inserted into the roller body, especially in its uninflated state, and then filled with the medium. This allows, in particular, the coefficient of friction between the outside of the damping element and the inside of the roller body to be influenced, thereby affecting the friction drive.Furthermore, according to the invention, it is possible to arrange the transmission device inside the roller body, whereby the transmission device can ensure a friction drive. This arrangement is particularly simple because the damping medium can only be filled with the appropriate medium at the point of use. In principle, however, a solid body could also be used as the damping medium in other embodiments.

[0028] Alternatively, the medium can also be a liquid, such as water or oil, in which case the liquid can be pressurized and fed into the cavity of the damping material. In particular, the stiffness of the damping material and the coefficient of friction between the damping material and the inner wall of the roller body can be adjusted according to the pressure of the medium.

[0029] Preferably, the transmission device is designed such that movement of the roller body in the axial direction and / or in the radial direction of the axis of rotation is possible. Ultimately, the aforementioned design ensures that the roller body can deflect in all three directions as needed, thus enabling damping in all directions. Particularly preferred is at least movement of the roller body in the radial direction of the axis of rotation.

[0030] Preferably, the roller body can deflect axially and / or radially around the axis of rotation by at least 0.5 mm, preferably at least 1 mm, more preferably between 0.5 and 10 mm, and / or at least 2 cm, preferably at least 3 cm. Such deflection is particularly effective in overload situations. Overload occurs when high process forces act on the roller body and these forces must be deflected. This allows high overload peaks on the roller body to be avoided, or at least significantly reduced.

[0031] The roller's potential evasive movement ultimately allows for relative movement between the problematic material being shredded or bulk material and the roller itself in the event of an overload, thus preventing high overload peaks. This evasive movement, among other things, prevents damage or even destruction of the drive motor. The entire system in which the rotary device is used can therefore be operated significantly longer and more efficiently.

[0032] According to the invention, it is particularly provided that the transmission devices with the respective shaft sections are effective or arranged at least in the end-face regions of the roller body. This design is understood in particular as a double-sided damped mounting of the roller body. However, in further embodiments, the transmission device need not be adjacent to the end face of the roller body, but can also be spaced apart from it, so that the transmission device can be used, in particular alternatively or additionally, in and / or near the central region of the roller body. This allows the roller body to readily perform the necessary evasive movements to avoid overload peaks and to protect the roller body.

[0033] In a further preferred embodiment, the drive shaft assembly is designed in multiple parts. In this embodiment, the first and second shaft sections can be designed as separate sections or assemblies. Thus, in particular, a gap can exist between the facing end faces of the shaft sections when the shaft is inserted into the roller body.

[0034] In principle, it would also be preferable for the wave sections to be directly adjacent to or colliding with each other.

[0035] The two sections of the shaft sections can be handled independently of each other and preferably also driven independently of each other, but preferably synchronously with each other.

[0036] At least one shaft section is assigned to a drive motor.

[0037] In an alternative, equally preferred embodiment, the drive shaft assembly is designed as a continuous and / or one-piece drive shaft. This drive shaft then comprises shaft sections. For example, it may be provided that each shaft section is formed by half of the drive shaft. However, the separation of the shaft sections need not occur in the middle of the continuous drive shaft, but can also have other ratios of the lengths of the shaft sections to each other, such as 70% to 30% or 60% to 40%, or the like.

[0038] In the case of a continuous drive shaft, it is provided that at least one shaft section can be driven by a drive motor.

[0039] The advantage of designing the drive shaft assembly as a continuous drive shaft is that it prevents a situation where, in the event of an overload, the transmission devices arranged on one shaft section no longer provide frictional engagement for torque transmission to the roller body, while the transmission of rotary motion continues to occur on the other shaft section via the transmission device(s) located there. This would lead to undesirable stress on the roller body.

[0040] Both the first and second shaft sections are at least partially enclosed by the connecting element of the transmission device and / or at least partially located inside the connecting element. Thus, the connecting element can surround the shaft section at least partially – specifically, in that section of the shaft section which is located inside the roller body. This section is hereinafter also referred to as the inner section of the shaft section.

[0041] In particular, at least two transmission devices can be assigned to each of the first and / or second wave sections. This leads, in particular, to improved bearing support and a reduction in stress on the other transmission devices.

[0042] Preferably, as explained above, at least one drive motor is assigned to at least one shaft section. In particular, each shaft section can be assigned one drive motor. If a plurality of drive motors are used, for example by assigning one drive motor to each shaft section, then these are preferably operable synchronously with each other and / or are synchronized with each other. Thus, a uniform drive of the rotary device can be ensured.

[0043] In the case of a continuous or one-piece drive shaft, preferably only one shaft section is assigned a drive motor. However, even in this embodiment, it is possible to assign a drive motor to both shaft sections, so that the drive motors can operate the shaft sections synchronously, in particular.

[0044] Furthermore, a number of motors offer the advantage that lower-powered drive motors can be used, which are readily available on the market at low cost.

[0045] The shaft section—and thus both the first and second shaft sections—particularly preferably has a bearing section designed to support the respective shaft section. This bearing section is preferably guided or mounted within the drive motor. It is understood that the bearing section of the shaft section need not be elastically mounted within the drive motor. The elastic mounting of the rotary device is achieved, in particular, by means of the elastic damping element. A connecting section of the shaft section preferably adjoins the bearing section, which may be located outside the roller body. This connecting section, like the bearing section, may project from the end face of the roller body and may be located on the outside of the roller body (i.e., not inside the roller body).This connecting section can thus preferably bridge the gap between the end face of the roller body and the drive motor. An inner section of the respective shaft section, located inside the roller body, is then connected to this connecting section. The transmission devices, which are also provided inside the roller body, are preferably arranged on this inner section. Thus, each shaft section (both the first and the second shaft section) can have a configuration of the following type: Storage section – connection section – inner section exhibiting [the following characteristics]. In this context, it is understood that the bearing section can be arranged on or in a drive or drive motor. However, the drive motor is not part of the respective shaft section, and therefore has not been specifically considered in the aforementioned design.

[0046] In a further embodiment, in particular, only one shaft section has a connecting section and a bearing section in addition to the inner section. The other shaft section then preferably has a bearing section and a connecting section in addition to the inner section. In this embodiment, therefore, in particular, only one shaft section projects from the roller body.

[0047] This configuration can also result when the drive shaft assembly is designed as a continuous or one-piece drive shaft. In this case, the inner sections of the shaft segments are preferably facing each other and, in particular, connected to one another and / or transition directly into one another. In this embodiment, it may be provided that a bearing section of a shaft segment is not located within a drive motor, since, in particular, only one drive motor is used. This bearing section (not located within a drive motor) is then also rotatably mounted; however, this mounting need not be elastically designed.

[0048] Preferably, a measuring device is provided for measuring the pressure of the damping medium. This measuring device can be associated with the rotary device or be a component of the rotary device. Furthermore, the measuring device is preferably coupled to a control device, which can also be associated with the rotary device or be a component of the rotary device. The control device, in turn, is coupled to a filling device for filling the damping medium with the medium and / or emptying it. Thus, the measuring device can measure the pressure of the medium, in particular water, air, and / or oil. Based on the measured pressure, the stiffness of the damping medium can then be adjusted by filling the damping medium with the filling device. The corresponding control and / or regulation is performed, in particular, by the control device.Corresponding specifications for the pressure of the medium, and thus for the stiffness of the damping material, can preferably be stored in the control unit. This allows for control and / or regulation of the pressure of the medium within the damping material. This control and / or regulation can preferably also occur during operation of the rotary device. For example, in the event of a high load peak, the pressure can be increased or decreased for a short period. Multiple changes between the aforementioned pressure states are also possible to eliminate malfunctions.

[0049] In particular, filling and / or emptying the medium is advantageous for commissioning the rotary device. For example, the damping material can be introduced into the roller body with low stiffness and / or in an empty state. The damping material can then be filled with the medium via the filling device. The measuring device ensures that the amount of medium already present in the damping material can be determined. This prevents the damping material from bursting or similar problems due to overfilling. Furthermore, optimal adjustment of the damping material's stiffness is preferably ensured.

[0050] In particular, the filling device is connected to all damping elements. Thus, all damping elements can be supplied with the medium from a single filling device, preferably from a common filling line. It is understood that the filling device can be permanently connected to the damping elements. This is advantageous when pressure increase or decrease is used to control the operating sequence in the event of malfunctions. However, it can also be provided that the filling device can be connected to the damping element as needed and decoupled or removed during operation of the rotary device. Both embodiments are possible according to the invention. Connecting the filling device to all damping elements has the advantage that the damping elements are adjusted together and are therefore, in particular, also matched to each other with regard to their stiffness.This enables optimal damping behavior of the roller body during use.

[0051] In another preferred embodiment, the roller body is designed as a hollow cylinder. The hollow cylinder has, in particular, open end faces. The shell of the hollow cylinder can, in particular, have a wall thickness that is at least substantially constant.

[0052] Preferably, the roller body is formed in one piece. However, in other embodiments, the roller body can also be composed of several components.

[0053] In particular, the stiffness of the damping element can be adjusted, preferably also during operation of the rotary device. Preferably, the stiffness of the damping element is adjusted by filling it with the medium. This filling can be controlled, in particular, by the control unit – specifically, depending on the pressure measured by the measuring device in the respective damping element. Preferably, the measuring device is configured to measure the pressure in all damping elements. In another embodiment, however, it is also possible to measure the pressure of at least one damping element.

[0054] Adjusting the stiffness of the damping element offers the advantage that the frictional engagement between the damping element and the inside of the roller body can be adapted and / or optimized depending on different operating conditions. For example, the maximum deflection of the roller body can be specified. If a softer or less stiff damping element is used, the permissible deflection of the roller body increases. Conversely, if a particularly stiff damping element is used, the maximum deflection is reduced. Accordingly, the deflection can be adjusted depending on the operating condition. For example, it can be stipulated that when the rotary device is used as a shredding roller, the maximum deflection is limited to the free gap or...The gap between the (shredding) tools arranged on the roller body and the counter-shredding tools interacting with them can be adjusted. However, if the rotary device is used, for example, as a transfer roller, such a gap does not need to be maintained. With a transfer roller, the available damping can therefore be greater, so that less rigid damping elements are required. Ultimately, the damping behavior of the rotary device, and especially of the roller body, can be adapted to different operating conditions.

[0055] In a further preferred embodiment, the roller body has a wall thickness of at least 10 mm, preferably at least 15 mm, and in particular between 15 and 100 mm. Wall thicknesses of the aforementioned type enable a stable design of the roller body. The roller body is made of, and / or consists of, a metal.

[0056] Furthermore, the roller body can have an outer diameter of at least 300 mm, preferably at least 500 mm, and more preferably between 500 and 2,000 mm. Depending on the inner diameter resulting from the outer diameter and the wall thickness, the outer diameter of the damping element can also be selected. Finally, the damping element, with its peripheral outer surface, abuts the inner surface of the roller body, in particular, to ultimately enable frictional engagement of the roller body.

[0057] As previously explained, it is preferably provided that the roller body is open at its end face. In this context, it can be particularly advantageous if at least one end wall is provided, preferably covering one end face of the roller body. In particular, two end walls are provided for the two open end faces of the roller body. Alternatively or additionally, it can also be provided that the respective shaft section is guided through the end wall and / or that the end wall is connected to the drive unit in a rotationally fixed, positive-locking, and / or friction-locking manner. In this case, the end wall is not part of the roller body. The end wall can define the boundary between the connecting section and the inner section of the respective shaft section. Furthermore, the end wall can also protect the interior of the roller body from contamination or the like.This ensures, in particular, that no contamination impairs the operation of the transmission equipment and / or the frictional connection between the damping medium and the inside of the roller body.

[0058] The roller body can have an at least substantially smooth surface on its outer side, facing away from the drive shaft assembly. A smooth surface of the roller body is particularly suitable for using the rotary device as a conveyor roller on the conveyor belt. The conveyor belt can then be placed around the outer surface of the roller body. Alternatively or additionally, the rotary device according to the invention can also be used as a bottom belt roller, guide roller, and / or support roller of a conveyor belt in other preferred embodiments.

[0059] Alternatively or additionally, it may be provided that a plurality of tools, in particular transfer tools, milling tools and / or crushing tools, are arranged on the outside of the roller body, i.e. facing away from the drive shaft device.

[0060] To achieve a high frictional force between the damping element and the inner surface of the roller body facing the damping element, a preferred embodiment of the invention provides that the damping element on its (peripheral) outer surface and / or the roller body on its inner surface facing the damping element have a surface structure and / or a coating with an increased coefficient of friction. An increased coefficient of friction is understood to mean a coefficient of friction greater than 0.4. Material pairings of the damping element and the inner surface of the roller body in the area of ​​the damping element are particularly preferred, where the coefficients of friction are greater than 0.5 and especially greater than 0.6.

[0061] Furthermore, the present invention relates to the use of a rotary device according to one of the preceding embodiments as a shredding roller for a shredding device, as a deflection drum, lower belt roller, guide roller and / or support roller for a conveyor belt, as a milling roller for a milling device and / or as a transfer roller for a transfer unit.

[0062] In this context, it is understood that, with regard to preferred embodiments and advantages of the use according to the invention, reference may also be made to the aforementioned embodiments of the rotary device. The explanations given therein apply equally to the use according to the invention, without the need for further explicit mention. Furthermore, the following explanations relating to the use according to the invention also apply equally to the rotary device according to the invention.

[0063] According to the invention, it has been shown that the rotary device offers significant advantages, particularly in the aforementioned applications. For example, if the rotary device is used as a shredding roller, it allows for deflection or elastic damping of the roller body without requiring damping or elastic mounting of the drive shaft assembly and / or the drive motor. When using the shredding roller, the maximum deflection in the radial and / or axial direction of the roller body's axis of rotation can be limited, preferably to a maximum of 1 cm, and more preferably between 1 mm and 50 mm. The maximum permissible deflection in at least one direction can be determined, in particular, depending on the shredding gap.the gap dimension is specified, which results between the shredding tools, which can be arranged on the outside of the rotary device, and the counter-shredding tools, which can be arranged, for example, on a comb or counter-comb of the shredding device and which can cooperate with the shredding tools to shred the feed material.

[0064] Furthermore, it is expressly pointed out that all the aforementioned and subsequent intervals 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.

[0065] Further features, advantages, and 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 features described and / or illustrated, individually or in any combination, constitute the subject matter of the present invention, irrespective of their compilation in the claims or their cross-reference.

[0066] It shows: Fig. 1 a schematic side view of a rotary device according to the invention, Fig. 2 a schematic perspective representation of the in Fig. 1 shown rotary device, Fig. 3 a schematic side view of the front face of the in Fig. 1 shown rotary device, Fig. 4 a schematic perspective representation of a further embodiment of a rotary device according to the invention, Fig. 5 a schematic perspective representation of the in Fig. 1 shown rotary device with a partial section, Fig. 6 a schematic perspective sectional view of the in Fig. 1 shown rotary device, Fig. 7 a schematic sectional view of the in Fig. 1 shown rotary device, Fig. 8 a schematic perspective representation of a drive shaft assembly according to the invention, Fig. 9 a schematic side view of another embodiment of a rotary device according to the invention, Fig. 10 a schematic sectional view of a further embodiment of a rotary device according to the invention, Fig. 11 a schematic sectional view of a further embodiment of a rotary device according to the invention, Fig. 12 a schematic perspective representation of the in Fig. 1 shown rotary device with a drive motor arranged on a shaft section, Fig. 13 a schematic perspective representation of the in Fig. 1 shown rotary device with two drive motors each arranged on a shaft section, Fig. 14 a schematic top view of a shredding device, Fig. 15 a schematic side view of a converter, Fig. 16 a schematic perspective representation of the use of a rotary device according to the invention as a milling drum and Fig. 17 a schematic perspective representation of the use of a rotary device according to the invention as a deflection drum for a conveyor belt.

[0067] Fig. Figure 1 shows a rotary device 1 designed as a shredding roller 2. Fig. Figure 14 illustrates that the rotary device 1 is made of Fig. 1 can be used as a shredding roller 2 of a shredding device 3.

[0068] The Fig. Figure 16 shows that the rotary device 1 can also be used as a milling drum 4 of a milling device.

[0069] Furthermore, the Fig. 15, that the rotary device 1 can also be used as a transfer roller 5 of a mobile transfer unit 6.

[0070] The Fig. Figure 17, however, shows the use of a rotary device 1 as a deflection drum 7 for a conveyor belt 8.

[0071] The in Fig. The rotary device 1 shown has a roller body 9.

[0072] The Fig. Figures 5 to 7 show different cross-sectional views of the in Fig. 1. Rotating device shown. 1. Thus, in the schematic perspective representation of the Fig. 5. A part of the rotary device 1 has been cut out in order to understand the construction of the rotary device 1. The Fig. Figure 6, however, shows a sectional view along the longitudinal axis of the rotary device 1 in a schematic perspective view. Fig. 7 shows the one in Fig. Section 6 shown in a schematic side view.

[0073] From the Fig. Figures 5 to 6 show that the roller body 9 is designed as a hollow body. Furthermore, the roller body is rotatable about an axis of rotation. The roller body 9 can be driven via a drive shaft assembly 11. The drive shaft assembly 11 is designed to transmit a rotary motion to the roller body 9. Therefore, the drive shaft assembly 11 interacts with the roller body 9, at least indirectly.

[0074] In Fig. Figure 1 shows that the drive shaft assembly 11 has a first shaft section 12 and a second shaft section 13. Fig. Figures 5 to 7 illustrate that the first and second shaft sections 12, 13 are at least partially arranged within the roller body 9 and project from it. In an embodiment not shown in detail, it may also be provided that only one shaft section 12, 13 projects from the roller body 9 and the other shaft section 12, 13 is arranged at least substantially completely inside the roller body 9.

[0075] Each of the first and second wave sections 12, 13 is assigned at least one transmission device 14, as shown by the Fig. Figure 7 shows the transmission device 14, which is arranged in the roller body 9 and frictionally connected to it. In its mounted state, the transmission device 14 can at least substantially abut and / or border the inner wall 15 of the roller body 9, or interact with it to establish the frictional connection. The transmission device 14 serves to transmit the rotary motion from the respective shaft sections 12, 13 to the roller body 9. The transmission devices 14 are part of the rotary device 1. The transmission devices 14, together with their respective associated shaft sections 12, 13, each provide a frictional drive for the roller body 9.

[0076] In the illustrated and preferred example, it is provided that neither a material-bonded nor a positive-locking connection between the transmission device 14 and the roller body 9 is required to drive the rotary device 1 or the roller body 9. In particular, the transmission of the rotary motion from the first and second shaft sections 12, 13 to the roller body 9 is effected solely via the frictional connection.

[0077] The Fig. Figure 8 shows a drive shaft assembly 11 with transmission devices 14 arranged on the respective shaft sections 12, 13. Furthermore, the Fig. 8, that the transmission device 14 comprises an elastic damping element 16 and a connecting element 17 rigidly connected to the damping element 16. In particular, the damping element 16 is rotationally fixed or torsionally rigidly connected to the connecting element 17. In the Fig. In the preferred embodiment shown in Figure 7, the damping element 16 is designed as an annular or flexible damping element 16, namely in particular as a tire, preferably as a car tire and / or as a truck tire. The connecting element 17, on the other hand, can in particular be designed as a wheel. Fig. Figure 6 schematically shows that the connecting element 17 is designed as a wheel and comprises a wheel disc 18, a rim 19, and a wheel flange 30. The wheel flange 30 serves for direct attachment to the respective shaft sections 12 and 13. The damping element 16 is arranged on the rim 19, which forms the outer ring of the wheel and is connected to the wheel flange 30 by the wheel disc 18 or the wheel rim 18.

[0078] The connecting element 17 is rotationally fixed to the respective shaft section 12, 13. In particular, a section of the shaft section 12, 13 is at least substantially completely enclosed by the connecting element 17, as can be seen from Fig. 6 becomes apparent.

[0079] The damping medium 16 can be designed as a hollow body that can be filled with a medium. In particular, the damping medium 16 can be inserted into the roller body 9 in an uninflated or unfilled state, which is not shown in detail. Air or a liquid can be provided as the filling medium for the damping medium 16.

[0080] It is not shown in detail that the transmission device 14 is designed such that movement of the roller body 9 in the axial direction and / or in the radial direction of the axis of rotation is possible. Preferably, movement in the radial direction of at least 2 cm, more preferably at least 3 cm, and / or at least 1 mm, more preferably between 2 and 10 mm, is permitted. The permissible deflection movement can be predetermined depending on the stiffness of the damping element 16 and is particularly tailored to the respective application. For example, when the rotary device 1 is used as a shredding roller 2, the damping movement of the roller body 9 can be limited, in particular, to the gap between the shredding tools 20 and the counter-shredding tools 21. However, such a limitation is not required, for example, when the rotary device 1 is used as a transfer roller 5.

[0081] The in Fig. The drive shaft assembly 11 shown in Figure 5 is designed such that it has a one-piece drive shaft. The first and second shaft sections 12 and 13 form a common drive shaft, which is preferably continuous and one-piece. Thus, the shaft sections 12 and 13 can transition directly into one another. As shown in Figure 5, the drive shaft assembly 11 is designed such that it has a one-piece drive shaft. Fig. 7 provided that the lengths 22, 23 of the first and second shaft sections 12, 13 running in the direction of the axis of rotation may be different. In the Fig. In the embodiment shown in Figure 7, it is provided that the length of the first shaft section 12, namely the length 22, exceeds the length 23 of the second shaft section 13.

[0082] In Fig. Figure 11 shows another preferred embodiment. In the embodiment shown in Fig. In the embodiment shown in Figure 11, the drive shaft assembly 11 is designed in multiple parts, with the first and second shaft sections 12, 13 being designed as separate sections. In particular, the shaft sections 12, 13 can be separated in the configuration shown in Figure 11. Fig. The embodiment shown in Figure 11 can be handled independently of one another, but preferably synchronously. In a multi-part design, a gap may be provided between the first and second shaft sections 12, 13, as shown in Figure 11. Fig. 11 shown, or that these at least essentially touch directly against each other.

[0083] Furthermore, it shows Fig. 11, that in the first and second wave sections 12, 13 at least two transmission devices 12 are assigned. Fig. Figure 6 shows that only one shaft section, in the illustrated embodiment the first shaft section 12, is assigned two transmission devices 14.

[0084] At the in Fig. In the embodiment shown in Figure 7, the first shaft section 12 is arranged such that two transmission devices 14 are assigned to it, whereas the second shaft section 13 is oriented such that, in particular, only one transmission device 14 can be assigned to it. Thus, in addition to the different lengths 22, 23, a different number of transmission devices can also be provided for the different shaft sections 12, 13.

[0085] In Fig. Figure 10 shows that a shaft section 12, 13 can be formed from different sections. For example, the shaft section 12, 13 has a bearing section 24, which is arranged outside the roller body 9. This bearing section 24 can serve for coupling with a drive motor 25, as shown in the Fig. 12 and Fig. Figure 13 shows that a connecting section 26 adjoins the bearing section 24. The connecting section 26 also projects from the roller body 9 and is located outside of the roller body 9. An inner section 27, located inside the roller body, can then be connected to the connecting section 26. The transmission devices 14 can then be arranged on or attached to this inner section 27, as shown in Figure 13. Fig. As can be seen in Figure 10. It is understood that if the shaft section 12, 13 does not project beyond the roller body 9, the shaft section 12, 13 also does not have a bearing section 24 or a connecting section 26. However, in all illustrated and preferred embodiments, each shaft section 12, 13 is composed of a bearing section 24, a connecting section 26, and an inner section 27.

[0086] In Fig. Figure 12 provides that only one bearing section 24 is inserted into or mounted in a drive motor 25. The other bearing section 24 can then be supplied to a differently configured bearing arrangement. Thus, the bearing section 24 does not necessarily have to be mounted in a drive motor 25, but can also be arranged on other components.

[0087] In Fig. Figure 12 shows that at least one drive motor 25 is assigned to a shaft section 12.

[0088] Fig. Figure 13 shows that each shaft section 12, 13 is assigned a drive motor 25, in particular wherein these drive motors 25 can be operated synchronously with each other.

[0089] At the in Fig. In the embodiment shown in Figure 12, it is particularly provided that the drive shaft assembly 11 is designed as a continuous drive shaft, so that the drive of the first shaft section 12 also drives and rotates the second shaft section 13. The bearing section 24 of the respective shaft sections 12 and 13 can be mounted in the drive motor 25, in particular by non-elastic means. The elastic mounting of the roller body 9 is achieved in particular via the transmission devices 14 and not via the mounting in or on the drive motor 25.

[0090] It is not shown in detail that a measuring device for measuring the pressure of the damping medium 16 is provided, which is coupled to a control device (also not shown in detail), wherein the control device in turn may be coupled to a filling device (also not shown in detail) for filling and / or emptying the damping medium 16. In particular, the filling device is connected to all damping media 16. Thus, in particular, all damping media 16 can be filled with the medium together via the filling device, in particular via one or more filling lines of the filling device. Preferably, the control device can be used to fill or empty the damping medium 16 with the medium both for commissioning the rotary device and during operation of the rotary device 1. At a minimum, however, the filling device is particularly suitable for activation or deactivation.designed for adjusting the stiffness of the damping element 16 for commissioning the rotary device 1.

[0091] The in Fig. The roller body 9 shown in Figure 6 is preferably designed as a hollow cylinder with open end faces.

[0092] It is not shown in detail that the end faces of the roller body 9 may be closed with an end wall. This end wall can then protect the interior of the roller body 9 from contamination or the like. The end wall may be connected to the roller body 9, but this is not required.

[0093] As explained above, the stiffness of the damping element 16 can be adjusted, preferably via the control device, particularly also during the operation of the rotary device 1.

[0094] It is not shown in detail that the roller body 9 has a wall thickness of at least 10 mm, in particular between 15 and 100 mm.

[0095] It is also not specified in detail that the roller body 9 has an (outer) diameter of at least 300 mm, preferably between 500 and 2,000 mm.

[0096] In Fig. Figure 9 shows that the roller body 9 has an at least substantially smooth surface on its outer side, facing away from the drive shaft assembly 11. Such a design is particularly suitable when the rotary device 1 is used as a deflection drum 7, as shown in Fig. 17 is shown, since the conveyor belt 8 can then be arranged on the surface of the roller body 9.

[0097] In the Fig. However, Figures 15 to 16 show that tools, in particular conversion tools 28, comminution tools 20 or milling tools 29, can be arranged on the outside of the roller body.

[0098] It is not shown in detail that the damping element 16 on its outside and / or the roller body 9 on its inside or inner wall 15 facing the damping element 16 has a surface structure and / or a coating with increased coefficients of friction, preferably greater than 0.4, in particular greater than 0.6.

[0099] As explained previously, the Fig. 14 the use of a rotary device 1 according to one of the aforementioned embodiments as a shredding roller 2 for a shredding device 3. The Fig. Figure 15, however, shows the use of a rotary device 1 as a turning roller 5 of a mobile turner 6, in particular for turning compost heaps.

[0100] In Fig. Figure 16 schematically illustrates the use of the rotary device 1 as a milling drum 4. This assembly can then be attached to a milling device, which is not shown in detail. The in Fig. The milling drum 4 shown in Figure 16 is designed in particular as a so-called “road milling drum”.

[0101] The Fig. Figure 17 shows the use of the rotary device 1 as a deflection drum 7 for a conveyor belt 8. In principle, the rotary device 1 could also be used as a transport or support roller for the conveyor belt 8 in addition to being a deflection drum, but this is not shown in detail.

[0102] It is also not shown that the rotary device 1 can be used as a bottom belt roller, guide roller and / or support roller for a conveyor belt 8. Reference symbol list: 1 Rotary device 2 shredding rollers 3. Shredding device 4 milling roller 5 Transfer roller 6 converters 7 Deflection drum 8 Conveyor belt 9 roller bodies 11 Drive shaft assembly 12 first wave section 13 second wave section 14 Transmission device 15 inner wall of 9 16 damping agents 17 Fasteners 18 wheel disc 19-inch rim 20 shredding tools 21 counter-shredding tools 22 Length of 12 23 Length of 13 24 storage section 25 Drive motor 26 Connection section 27 inner section 28 conversion tools 29 milling tools 30 wheel flange

Claims

[1] Rotary device (1) in particular intended for use as a shredding roller (2) for a shredding device (3), as a deflecting drum (7) for a conveyor belt (8), as a milling roller (4) for a milling device and / or as a transfer roller (5) for a transfer unit (6), with a roller body (9) designed as a hollow body and rotatable about an axis of rotation and a drive shaft device (11) at least indirectly connected to the roller body (9) for transmitting a rotary motion to the roller body (9), wherein the drive shaft assembly (11) comprises a first shaft section (12) and a second shaft section (13), wherein the first and the second shaft sections (12, 13) are at least partially arranged in the roller body (9) and preferably each project from the end face of the roller body (9), wherein at least one transmission device (14) arranged in the roller body (9) and frictionally connected to the roller body (9) is assigned to each of the first and the second shaft sections (12, 13) for transmitting the rotary motion from the respective shaft section (12, 13) to the roller body (9), wherein the transmission devices (14) with the shaft sections (12, 13) assigned to them each form a friction drive for the roller body (9), wherein the transmission device (14) comprises an elastic damping element (16) and a connecting element (17) firmly connected to the damping element (16), wherein the connecting element (17) is rotationally fixed to the respective shaft section (12, 13) and wherein the damping element (16) is designed as a hollow body that can be filled with a medium. [2] Rotary device according to claim 1, characterized by , that the transmission device (14) has an annular and / or flexible damping element (16). [3] Rotating device according to claim 1 or 2, characterized by , that the transmission device (14) is designed such that movement of the roller body (9) in the axial direction and / or in the radial direction of the axis of rotation is possible, preferably by at least 0.5 mm, more preferably by at least 1 mm, more preferably between 0.5 and 10 mm, and / or at least 2 cm, more preferably by at least 3 cm. [4] Rotating device according to one of the preceding claims, characterized by , that the drive shaft assembly (11) is designed in multiple parts and the first and second shaft sections (12, 13) are designed as separate sections or that the drive shaft assembly (11) is designed as a continuous and / or one-piece drive shaft. [5] Rotating device according to any of the preceding claims, characterized by , that at least two transmission devices (14) are assigned to each of the first and second wave sections (12, 13). [6] Rotating device according to one of the preceding claims, characterized by, that at least one drive motor (25) is assigned to at least one shaft section (12, 13), in particular wherein each shaft section (12, 13) is assigned a drive motor (25) and / or in particular wherein, in the case of a continuous or one-piece drive shaft, only one shaft section (12, 13) is assigned a drive motor (25) and / or in particular wherein, in the case of a plurality of drive motors (25), these can be operated synchronously with each other. [7] Rotating device according to one of the preceding claims, characterized by , that a measuring device for measuring the pressure of the medium of the damping agent (16) is provided, which is coupled to a control device and that the control device is coupled to a filling device for filling and / or emptying the damping agent (16). [8] Rotating device according to one of the preceding claims, characterized by , that the filling device is connected to all damping means (16). [9] Rotating device according to any of the preceding claims, characterized by , that the roller body (9) is designed as a hollow cylinder. [10] Rotating device according to one of the preceding claims, characterized by , that the stiffness of the damping element (16) is adjustable, especially also during the operation of the rotary device (1). [11] Rotating device according to one of the preceding claims, characterized by , that the roller body (9) has a wall thickness of at least 10 mm, preferably at least 15 mm, in particular between 15 and 100 mm. [12] Rotating device according to one of the preceding claims, characterized by , that the roller body (9) has an outer diameter of at least 300 mm, preferably of at least 500 mm, more preferably between 500 and 2000 mm. [13] Rotating device according to one of the preceding claims, characterized by , that the roller body (9) is designed to be open at the end face. [14] Rotating device according to one of the preceding claims, characterized by , that the roller body (9) has an at least substantially smooth surface on the outside, facing away from the drive shaft assembly (11) and / or that a plurality of tools, in particular transfer tools (28), comminution tools (20) and / or milling tools (29), are arranged on the outside of the roller body (9), facing away from the drive shaft assembly (11). [15] Rotating device according to one of the preceding claims, characterized by that the damping means (16) on its outside and / or the roller body (9) on its inside (15) facing the damping means (16) has a surface structure and / or a coating with an increased coefficient of friction, preferably greater than 0.4, more preferably greater than 0.5 and particularly greater than 0.

6. [16] Use of a rotary device (1) according to any of the preceding claims as a shredding roller (2) for a shredding device (3), as a deflecting drum (7) for a conveyor belt (8), as a milling roller (4) for a milling device and / or as a transfer roller (5) for a transfer unit (6).

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