EP4137234B1 - Crushing device with feed roller - Google Patents

Description

The invention relates to a shredding arrangement for shredding material to be shredded such as household waste, industrial waste, plastic, wood, paper and / or biomass, comprising a machine frame on which a shredding device is arranged, and a feed device with at least one feed roller that can be driven for rotation by means of an assigned drive device for feeding the material to be shredded to the shredding device.

Such comminution arrangements are well known in the field and can have a design adapted to the material to be comminuted. The drive device, which drives the feed roller to rotate and thus to feed material to be shredded to the shredder, is conventionally flanged to an axial end face of the feed roller. Depending on the embodiment, the drive device of one or more such feed rollers can comprise, for example, an electric motor or a hydraulic motor. A generic shredding device, here for shredding plate-shaped shredded material, is for example in the published patent application DE102016107525A1 described.

A major disadvantage of such conventional shredding arrangements with a drive device arranged on the front side of the respective feed roller, the overall width of the shredding arrangement increases in the area of the feed, which prevents a compact structure. Depending on the embodiment, such drive components, which are generally arranged on the outside of the machine frame, can represent an additional safety risk, which often requires appropriate protective measures, possibly of a constructive nature, which can increase both the manufacturing effort and the installation and maintenance effort of such a conventional shredding arrangement.

In this respect, the present invention is based on the object of modifying a conventional shredding arrangement in such a way that the described disadvantages caused by the drive of the feed roller are at least partially eliminated.

The invention solves this problem with a comminution arrangement comprising the features of claim 1. The comminution arrangement according to the invention for comminuting material to be comminuted has a comminution device which is arranged, in particular mounted, on a machine frame, and a feed device with at least one, by means of a associated drive device for rotating drivable feed roller for feeding the material to be shredded to the shredding device. The shredding arrangement according to the invention is characterized in that the feed roller is designed to accommodate the associated drive device, the drive device is arranged within the feed roller and has an electric motor, a gear device and an elastic coupling.

The invention is based on the idea of developing a conventional shredding arrangement in that the drive device of the at least one feed roller of the feed device is designed in such a way that it can be arranged within the at least one feed roller, which allows a compact design while at the same time reducing any possible safety risks can be caused by a drive device that is otherwise attached to the outside of the drive roller. The arrangement of the drive device, comprising electric motor, gear and elastic coupling, can in particular be designed in such a way that the mentioned components of the drive device or the drive device itself are arranged completely within the feed roller, so that this also results in greater flexibility in a possible encapsulation of the Feeding device results from the elimination of further bushings such as for drive shafts, drive chains, hydraulic distributors or hydraulic couplings when using hydraulic drives.

The comminution arrangement according to the invention can provide improved design options in order to avoid the escape of dirt such as dust generated during the comminution process into the surroundings of the comminution arrangement. In addition, the drive device arranged within the feed roller can be protected against external influences. In addition, by providing an elastic coupling in the drive train for the feed roller, compensation for axial and/or radial imbalances as well as compensation for manufacturing tolerances within the drive device or the drive train of the feed roller can be provided. Furthermore, shocks and/or torque peaks that occur during operation of the comminution arrangement according to the invention can, for example, be reduced by the use of at least an elastic intermediate member or several elastic intermediate members, which bring a component arranged on the clutch input side and a component arranged on the clutch output side into operative connection, are mitigated or intercepted, so that special, possibly shock-sensitive, drive components can be used within the drive device of the feed roller, for example a complex gear such as a Planetary gear transmission, which can result in a particularly compact design of the drive device of the feed roller.

The comminution arrangement according to the invention can be designed for different designs of comminution devices. This comminution device can, for example, have a comminution rotor which is rotatably mounted on the machine frame about its rotor axis and has at least one or a plurality of comminution tools on its circumference for comminution of the material to be comminuted. For example, it can be provided that a large number of comminution tools are attached to the rotor next to one another in the longitudinal axis of the rotor, and possibly at a distance from one another in the longitudinal direction of the rotor. In the case of a so-called chipper, for example for shredding building trunks, the shredding rotor can, for example, only have a single tool. It is also possible for the shredding device according to the invention to have fixed knives or knife strips, which cooperate with the at least one shredding tool arranged on the rotating shredding rotor to shred the material to be shredded. In addition, a comminution device according to the invention can also have a plurality of comminution rotors, which can, for example, be arranged parallel to one another with respect to their axis of rotation, with the comminution tools adjacent to one another arranged shredding rotors work together to shred the material to be shredded. The exact design of the shredding tool(s) can be specifically adapted to the material to be shredded.

Further features and developments of the comminution arrangement according to the invention are specified in the general description, the figures, the descriptions of the figures and the subclaims.

According to the invention, it can be provided that the at least one feed roller has a hollow cylinder-like roller base body which accommodates the associated drive device, the interpretation of the term hollow cylinder-like being to be understood broadly and the roller base body does not always have to be designed rotationally symmetrical, but can deviate from pure cylindrical symmetry. In this respect, this roller base body can in particular be designed to be rotationally symmetrical, but is not limited to this.

In particular, the roller base body can have features on its inner lateral surface, for example design of bearing surfaces on which bearing elements are supported or other designs, for example at least one welded-on element to provide an operative connection with the gear in order to drive the roller base body to rotate.

It can be provided that the roller base body has a structure on its outer surface in order to improve an active connection between the feed roller and the material to be shredded when feeding the material to be shredded to the shredding device, for example in the form of radial projections such as teeth with which the feed roller is located Claws into the material to be shredded to feed the material to be shredded in the direction of the shredding device during the rotational movement of the feed roller. These engagement teeth can, for example, be arranged on the outer surface of a sleeve, which can be fastened with its inner surface to the outer surface of the roller base body. In this respect, the feed roller can also comprise a plurality of radially successive sleeve elements, one of which can be the roller base body in order to provide the described functionalities of the feed roller both on its outer surface and on its inner surface. It is also possible for several elements having the specified teeth, for example strip elements, to be attached to the outer surface of the roller base body, for example by screwing or welding, in order to structure the surface of the feed roller in order to improve the interaction between the material to be shredded and the feed roller.

Depending on the embodiment, the invention can be designed with different elastic couplings, for example with a claw coupling, a plate coupling, an articulated disk coupling, a spring coupling, an elastic bolt coupling, a tire coupling, an elastic disk coupling, etc., which have the advantage of compensating axial and / or radial imbalances as well as manufacturing tolerances within the drive device or the drive train. By using at least one or more elastic intermediate members, which bring a component arranged on the clutch side into operative connection and a component arranged on the clutch output side, these elastic couplings can mitigate shocks and/or torque peaks that occur during operation. Depending on the embodiment, compression or expansion can occur or displacements within the drive train caused by torsion in these elastic intermediate members are compensated for.

Particularly advantageously, a torsionally elastic coupling can be provided in the manner in which elastic rubber elements are fastened between two radial flanges, which transmit an operating torque from a drive-side flange to an output-side flange of the coupling, in particular in an axially pluggable design, in which components of the elastic coupling , for example, the two flanges are arranged axially pluggable to provide easier assembly/disassembly of the coupling or essentially the entire drive device arranged in the feed roller.

To facilitate the assembly/disassembly of the drive device within the at least one feed roller of the feed device of the comminution arrangement according to the invention, it can be provided that the motor shaft of the electric motor is connected to the input side of the transmission device, wherein the output side of the transmission device can be connected to the input side of the elastic coupling described and the clutch is connected on the output side to the at least one feed roller of the feed device that is to be rotated or is connected to it.

In one embodiment of the invention it can also be provided that the motor shaft of the electric motor is connected to the input side of the elastic coupling, which in turn is connected on the output side to the input side of the transmission, the output side of the transmission being coupled to the feed roller or the hollow cylinder of the feed roller is to transmit torque to the feed roller.

Different gear devices can be used to design the comminution arrangement according to the invention. Compact gears such as high-ratio special gears, e.g. B. a shaft gear or a cycle gear to design the shredding arrangement according to the invention. The use of a planetary gear has proven to be particularly expedient, in which a number of constellations are possible according to the invention. For example, it can be provided that the motor shaft of the electric motor is connected to the input side of the planetary gear, while the output side of the gear device can be formed in one embodiment by the ring gear of the planetary gear, and the drive side of the gear device can be formed by a sun gear of the planetary gear, which can be coupled to the motor shaft as indicated. In this embodiment it can be provided that the web (planet carrier) is fixed. However, it is also within the scope of the invention, when using such an epicyclic gearbox (planetary gearbox), to provide for the ring gear to be held firmly with the housing of the gearbox, while the sun gear is connected to the motor shaft of the electric motor and the planet carrier as the output side of the gearbox is connected to the input side of the elastic Coupling is connected. As the person skilled in the art will recognize, depending on the embodiment, the transmission can be configured in such a way that the highest possible torque is provided, particularly when the roller starts up.

In a particularly advantageous embodiment of the shredding arrangement according to the invention, the elastic coupling can have a first ring or disk element on the output side, in particular in the form of a flange element, which is fastened in particular rigidly to an inner surface of the cylindrical roller base body, for example by means of a material connection designed by welding, and is designed as a driver, wherein the elastic coupling can have a second ring or disk element on the input side, in particular in the form of a flange , and the latter can be arranged on the output side of the transmission device. Preferably, it can be provided that the first and second ring or disk elements are in operative connection for force and/or torque transmission by means of at least one elastic coupling element. It can be provided that the at least one elastic coupling element can be attached to one of the two ring or disk elements and extends with a free end, in particular approximately perpendicular to the axis of the ring or disk element, into an associated opening of the other of the two ring elements. or disk elements to provide a circumferential positive connection between the first and the second ring or disk element. Preferably, the elastic coupling can have a plurality of such elastic coupling elements, which can, for example, be cylindrical. These coupling elements can be made from an elastomeric material, in particular as a vulcanizate made from a natural and/or a silicone rubber.

The attachment of the first ring or disc element of the elastic coupling to the inside of the roller base body can also be realized, for example, by providing appropriately arranged receiving points for rigid fastening or for rigidly receiving the first ring or disc element, so that this can be held at the receiving point during assembly, for example can be screwed using screw bolts.

In order to provide a compact design of the drive device and thus to simplify a design in which it is arranged in particular completely inside the hollow cylindrical roller base body, it can expediently be provided that the gear device extends axially in sections through the first ring element or disk element of the elastic coupling, which is designed as a driving element extends through. In a particularly expedient embodiment, it can also be provided that in the installed position the transmission device extends axially at least in sections through both the first and second ring elements of the elastic coupling, in order to achieve a particularly compact design with the advantages described.

In order to support the moving section of the at least one feed roller relative to a fixed section of the roller, it can expediently be provided that a bearing support device is arranged in the area of longitudinal end sections of the roller base body, which extends axially into the roller base body, on which the roller base body is arranged on its inside via a respective bearing device is supported such as a plain bearing device, such that the roller base body is arranged to carry out a rotary movement relative to the bearing support devices. It can expediently be provided that the bearing device provides an axial play between the moving roller base body and the bearing support devices, while a bearing that is essentially free of play and enables the described rotational movement of the roller base body to the bearing support devices can preferably be provided in the radial direction. When designing a respective plain bearing, one can expediently use one Relatively moving parts separating lubricant film or solid lubricants can be provided in the mutually moving parts to avoid lubricant escaping from the respective storage device, whereby maintenance intervals of the drive device of the feed device of the comminution arrangement according to the invention can be extended. It can expediently be provided that a radial bearing, in particular designed as a plain bearing, is provided on both of the bearing support devices, with an axial bearing preferably being additionally or integrally arranged on one of the two bearing support devices between the fixed bearing support devices and the roller base body moving thereto in order to absorb the operating forces and to provide the desired rotational movement of the bearing base body to the fixed bearing support devices.

Preferably, it can be provided that at least one of the two bearing support devices, in particular both bearing support devices, is each designed as a bearing ring which carries the respective bearing device to support the rotating roller base body relative to the respective bearing support device. In a particularly expedient embodiment of the comminution arrangement according to the invention, one of the bearing support devices can additionally be set up and designed to carry an assembly comprising the electric motor, the gear device, and a gear-side ring or disk element of the elastic coupling. It can be provided that the assembly can be connected to this associated bearing support device by a detachable connection, for example a bolt connection, such that the assembly can be removed as a unit from the roller base body by releasing the connection to the associated bearing support device, which allows assembly. and/or maintenance work can be made significantly easier. This applies in particular to an elastic coupling, which, as stated above, can be designed in such a way that coupling components assigned to one another are designed to be axially pluggable. Preferably, it can be provided that the assembly is axially connected, for example screwed, to the associated bearing support device in the area of the transmission device. Due to the specified coupling of the motor with the bearing support device, this can be designed as a torque support for the drive device.

In order to dissipate waste heat from the drive device, in particular from the electric motor and/or the transmission device, it can expediently be provided that a fan device is arranged and designed to move a cooling fluid, in particular air, axially through the roller base body with the drive device accommodated therein. Preferably, it can be provided that an air inlet is arranged on one end face of the roller base body and an air outlet is arranged on the other end face of the roller base body, and the fan device is designed and arranged and arranged in an electrically controllable manner, a predetermined air throughput, in particular depending on an actual value of the motor power , to be generated by the roller base body in the axial direction. It can expediently be provided that air guide slots are provided inside the roller base body, for example on ring or disk elements of the elastic coupling and / or the bearing support devices, in order to guide the cooling fluid into the areas of the waste heat-generating aggregates within the roller base body and thus the from the Dissipate waste heat generated by the drive device.

In addition, the fan device can have at least one or several filter elements e.g. B. in the form of fine-mesh grids or suspended matter filters in the area of the at least one air inlet and / or in the area of the at least one air outlet in order to prevent contamination of the drive device by particle-containing outside air and the escape of particles from the drive device, which e.g. B. can occur in the event of a defect or abrasion within the drive device, into the operating space of the shredding arrangement.

The described arrangement of the drive device within a roller base body of the feed roller in the shredding arrangement according to the invention is particularly suitable in those shredding arrangements in which the feed device has a rocker which is pivotally arranged on the machine frame and on which the at least one feed roller is rotatably arranged, since in the lateral edge regions of such Swing arm, the arrangement of a drive device assigned to the feed roller can be omitted. For example, it can be provided that the feed device has at least one further, usually several further, feed rollers in addition to the feed rocker, on which a feed roller is rotatably mounted. These further feed rollers can, for example, provide a lower section in the feed area in the manner of feed rollers lying below, on which the material to be shredded rests, while the feed roller of the rocker, as an upper feed roller, loads on the material to be shredded by the weight of the rocker, such that the material to be shredded between the or .The lower feed rollers and the at least one upper feed roller are arranged and transported in the feed direction. In addition to the at least one upper feed roller mounted on the rocker, at least one of the lower feed rollers can also be driven to rotate to move the material to be shredded in the feed direction.

In this respect, in the shredding arrangement according to the invention, depending on the embodiment, the bearing support devices can be fastened in a rotationally fixed manner to the machine frame or in a rotationally fixed manner to a rocker or feed rocker of the feed device described above, this rocker being relative to the machine frame in order to adapt a feed or feed gap to the material to be shredded about a pivot axis can be arranged movably, and wherein this gap can be formed between the upper feed roller mounted on the rocker and the at least one lower feed roller (s).

In such embodiments, in which the feed device has such a rocker, it can be provided that the pivot axis of the rocker, the axis of rotation of the upper feed roller mounted on the rocker and / or the axis of rotation of the lower feed roller (s) are parallel to each other, in particular approximately perpendicular to the Feed device and are arranged approximately parallel to a shredding rotor axis.

This arrangement with a feed rocker in the feed area of the shredding arrangement according to the invention makes it possible to design side plates of the machine frame in the area of the rocker in such a way that side plate sections running parallel to the feed direction are arranged, which prevent the escape of (partially) shredded material and/or material to be shredded in this area essentially prevent the shredding room. The rocker can be arranged to be pivotable in the transverse direction between these side plate sections and immersed between them in such a way that in an operating position of the rocker, the axis of rotation of the feed roller mounted on the rocker is below the upper edge of the side plates lies. Due to the design described, an escape of material to be shredded or partially shredded material can be significantly reduced or avoided during operation of the comminution arrangement according to the invention compared to conventional comminution arrangements which have a rocker in the feed area, since in order to provide the pivoting movement of the rocker in the arrangement according to the invention In the associated side plate sections, no recess or slot running approximately perpendicular to the feed direction has to be provided as in the conventional shredding arrangements, so that connecting sections for external flange mounting of drive units of the feed roller, e.g. B. can be arranged in the form of drive chains, drive clutches.

In order to precisely control the movement of the at least one feed roller, it can expediently be provided that the electric motor is fed by a frequency converter to provide an alternating supply voltage with a predetermined amplitude and frequency for setting a predetermined rotational speed and / or rotational acceleration of the feed roller. In order to brake the at least one feed roller, particularly in generator operating situations, it can expediently be provided that the frequency converter has a braking resistor in a DC intermediate circuit, which can be switched on at intervals in the intermediate circuit by means of an electrical switch in the manner of a chopper in order to reduce energy and thus braking the feed roller. In particular, in order to provide high starting torques, it can expediently be provided that the electric motor is designed as a servo motor. As explained above, the shredding device of the shredding arrangement according to the invention can have a shredding rotor driven by a further drive device include, which has at least one comminution tool, in particular a plurality of comminution tools, on its circumference, wherein the comminution arrangement can have a control device which controls the drive device of the comminution rotor, which can be designed, for example, as a hydraulic drive or electric drive, and the drive device of the feed roller in a coordinated manner Feeding and shredding the material to be shredded.

Character description

Figur 1

eine erfindungsgemäß gestaltete Zerkleinerungsanordnung in einer perspektivischen Teilansicht,

Figur 2

die erfindungsgemäße Zerkleinerungsanordnung der Figur 1 in einer Seitenansicht unter Weglassung von Komponenten zur Darstellung der Einzugsmimik,

Figur 3

eine Querschnittsdarstellung in einem Längsschnitt einer Einzugswalze der Zerkleinerungsanordnung der Figur 1,

Figur 4

eine isometrische Ansicht der in Figur 3 dargestellten Einzugswalze der Zerkleinerungsanordnung der Figur 1, jedoch in vertikaler Richtung gespiegelt, und

Figur 5

eine weitere isometrische Ansicht der in Figur 3 und 4 dargestellten Einzugswalze der Zerkleinerungsanordnung der Figur 1

zeigt.The invention is explained below with reference to the accompanying figures by describing an embodiment and modifications, where

Figure 1

a shredding arrangement designed according to the invention in a partial perspective view,

Figure 2

the comminution arrangement according to the invention Figure 1 in a side view, omitting components to show the drawing facial expressions,

Figure 3

a cross-sectional view in a longitudinal section of a feed roller of the shredding arrangement Figure 1 ,

Figure 4

an isometric view of the in Figure 3 shown feed roller of the shredding arrangement Figure 1 , but mirrored in the vertical direction, and

Figure 5

another isometric view of the in Figures 3 and 4 shown feed roller of the shredding arrangement the Figure 1

shows.

A respective comminution arrangement designed according to the invention can be designed to be specifically adapted to the material to be comminuted. A shredding arrangement according to the invention is described below, which can be designed and set up to shred elongated objects with varying diameters such as tree trunks. Figure 1 shows a detail view of such a shredding arrangement 1 in a side view, with components partially removed to make them visible. The shredding arrangement 1 shown comprises a shredding device 2 with a shredding rotor 20, the rotor axis of which is shown in the illustration Figure 1 is perpendicular to the drawing plane. The shredding rotor 20 here has a plurality of shredding tools 22 arranged on its circumference, of which are shown in the illustration Figure 1 only a single tool is visible. To supply the material to be shredded, the shredding arrangement 1 comprises a feed device 3, with a feed belt device 30, which is driven via a belt drive 31. The feed belt device 30 transfers the material to be shredded in the feed direction Z, here perpendicular to the axis of the shredding rotor, to a feed roller arrangement with a plurality of lower feed rollers 32a, b, c, which have a common drive motor 33 and an upper feed roller 100, which is mounted on a feed rocker 40 , which itself has a pivot axis S, which here runs parallel to the axis of the shredding rotor 20 and also parallel to the axis of rotation E of the upper feed roller.

The pull-in rocker 40 has a rocker housing 41, which in the transverse direction, ie perpendicular to the feed direction Z and parallel to the rotor axis, has a dimension that it lies within the transversely spaced side plates 24 of the shredding device, so that the rocker is loaded by its own weight in the drawing Figure 1 moves downward into the shredding space of the shredding device 2 defined by the side plates 24a, b until it rests against the material to be shredded.

The lower feed rollers 32a, b, c can therefore form a feed gap that is automatically adapted to the thickness of the material to be shredded with the feed roller 100 of the rocker arm 100. Since the drive of the feed roller 100 mounted on the rocker housing 41 of the feed rocker 40 is arranged within the roller body in a manner to be described, the illustrated design of the shredding arrangement 1 according to the invention allows operating situations in which the axis of rotation E of the upper feed roller 100 is below the upper edge 25a, b the side plates 24a, b of the shredding device 2 lies. This design is based in particular on the Figure 2 in which an operating situation is shown in which the feed rocker 40 dips into the shredding space laterally limited by the side plates 24a, b, making it possible for the axis of rotation E of the upper feed roller 100 to be below the upper edge 25a, b of the side plates 24a , b of the machine frame is moved.

Like in particular from the Figures 1 , 2 As can be seen, the arrangement of the drive device of the upper feed roller 100 within a roller base body, explained in more detail below, makes it possible that no drive units are connected laterally to the upper feed roller, which would otherwise make it necessary to have a vertical one Slot to provide a vertical recess in the side plate sections 24a, b of the machine frame 23 so that the feed rocker 40 can sufficiently immerse itself in the shredding space.

During operation of the shredding arrangement 1 according to the invention, the tree trunks are transported by means of the feed belt device 30 into the area of the feed rollers 33a, b, c and 100, first moved by the first lower feed roller 33c in the feed direction 3 in the direction of the shredding rotor 20, then by the lower feed roller 33b and the upper feed roller 100 mounted in the rocker 40 and transported further towards the shredding rotor 20. The feed rocker 40 can be freely pivoted about its axis of rotation S, so that the rocker rests with its weight on the material to be shredded and thus automatically adjusts to a changing trunk diameter, so that the tree trunk is fed to the shredding rotor in the feed direction Z in a defined manner, regardless of its diameter can be.

Figure 3 shows a possible embodiment of the feed roller 100 of the shredding arrangement 1 designed according to the invention Figures 1 , 2 in a longitudinal section along the axis of rotation E of the feed roller. The feed roller 100 can have a here rotationally symmetrical roller base body 101, on which a circumferentially extending plurality of engagement strips 120 attached to its outer surface, each comprising a plurality of spaced-apart and radially extending projections in the manner of teeth, are arranged. Depending on the embodiment, the engagement strips 120 can be applied to the outer surface of the roller base body 101 in a cohesive or form-fitting manner. In another embodiment can also be provided be to arrange the teeth directly on the outer surface of the roller base body, for example by screwing or integrally molding onto the roller base body.

At the front end sections 113, 114 of the roller base body 101, the feed roller 100 each has a bearing support device in the form of a respective bearing ring 105a, b, which carry a respective bearing 106a, b to support the roller base body 101. Depending on the embodiment, the bearings 106a, b be designed as a radial plain bearing, while at least one of the bearing devices can also include an axial bearing to provide a predetermined axial play between the bearing rings and the roller base body.

How out Figure 3 As can be seen, in the described embodiment, the left bearing ring 105a shown protrudes only slightly into the interior of the roller base body 101, while the right bearing ring 105b extends into the roller base body 101 over at least half of the axial extent and can be designed to be an assembly, comprising an electric motor 110, an adjoining transmission device 118 and an input element in the form of an adapter ring 119 of a coupling device 117. Since the specified assembly is screwed to the second bearing ring via a circumferential connecting flange in the area of the transmission device, the bearing ring 105b on the right in the figure can at the same time be designed as a torque arm. For this purpose, the bearing ring 105 has a radial flange 130 on its axial end face facing the gear device 118, to which the specified assembly is fixed via fastening bolts 131, which are screwed into an associated thread on the outer housing of the gear device 118. The radial flange 130 can have a sleeve-shaped middle section 119 with the front section to design the in the Figure 1 Right-hand bearing ring 105b can be connected, in particular by means of welding.

In the described embodiment, the transmission device 118 may comprise a planetary gear, in which the sun gear is driven by the motor shaft of the electric motor 110 and in which a ring gear flange 140 represents the transmission output. The ring gear can be connected via the ring gear flange 140 to an adapter ring 109 as an input part of the coupling device 117 by means of bolts 141. The coupling device 117 can also have a further ring element 108, which can be fastened as a driver ring to transmit torque, in particular in a material or form-fitting manner, on the inside of the roller base body 101 and thus represents the output side of the coupling device 117.

For the torque-transmitting coupling of the adapter ring 109 and the driving ring 108 of the coupling device 117, a plurality of circumferentially spaced elastic, here for example cylindrical coupling elements, extending in the direction of the axis E of the feed roller 100, can be provided, which are on one of the two rings 108, 109 attached and each extend through an assigned axially extending opening on the other ring. Like in particular Figure 4 As can be seen, in the described embodiment it can be provided that the elastomeric coupling elements 122 are fastened to the adapter ring 109 by means of a bolt connection, with the coupling elements 122 extending in the axial direction in the associated bushings on the driver ring 108 being in the assembled state of the coupling torque-transmitting active connection between the two ring elements 108, 109 of the coupling device 117 protrude. In the described embodiment, a large number of such coupling elements 122 can be attached to the adapter ring 109 at a circumferential distance, which in the installed position each extend into an assigned passage of the driver ring 108. The gear device 117 can extend at least in sections both through the driving ring 108 and through the adapter ring 109, which provides a compact design of the drive device of the upper feed roller of the comminution arrangement designed according to the invention or simplifies the integration of the entire drive device within the roller base body.

The two end face sections 113, 114 of the feed roller 100 are each closed by an associated cylinder cover 115a, b, which are screwed to the respective bearing ring 105a, b. These cylinder covers 115a, b can have a fan opening to provide the intended air cooling of the drive device, with one of the two cylinder covers 115a, b having an air inlet 111 and the other of the cylinder covers having an air outlet 112 to provide an axial air flow inside the roller base body 101 of the feed roller 100 It can be provided that both the driver ring 108, the adapter ring and the bearing rings 105a, b include air passages 121, so that an air flow generated outside the feed roller 100 can be guided from the air inlet 111 to the air outlet 112. Through the respective positioning, size and shape of the air inlet, the air outlet and the air passages, the air flow can be guided specifically to components of the drive device to be cooled, for example to the gear device 180 and the electric motor 110, for at least partial purposes Absorption of the respective waste heat from the components of the drive device.

The supply and removal of the cooling medium is for another embodiment Figure 2 indicated, which shows the respective air supply hose 42a and the air discharge hose 42b. Air supply or air removal is not passed through the cylinder covers 115a, b in a direction perpendicular to the axis E, but rather approximately perpendicular to it, in order to avoid a component arrangement in the lateral direction.

To assemble the feed roller 100, the gear device 118 can be connected to the ring gear flange 140 with the adapter ring 109 and the coupling elements 122 attached thereto by means of the fastening bolts 141, see the Figures 3 - 5 . Furthermore, the sliding ring 105b can be connected to the front section, comprising the bearing device 106b, in particular in the form of sliding bearing elements, to the middle part 119 and the radial flange 130 and subsequently the radial flange can be screwed to the gear 118 by means of the bolts 131. After the motor flange has been flanged to the gearbox, this structural unit can be inserted axially as a whole into the roller base body 101, such that the coupling elements 122, after a circumferential alignment with the driver ring 108, engage in a respective assigned passage of the driver ring to provide an active connection between the electric motor 110 and the roller base body 101. The bearing ring 105b can then be attached to the rocker housing 41, so that the roller body 101 is rotatably mounted to the rocker housing 41. The described design of the upper feed roller of the shredding arrangement according to the invention enables simple assembly in that the entire drive device, excluding the driver ring 108, is initially located outside of the Roller base body can be assembled, the feed roller can then be completed by simply axially inserting this assembly into the roller base body, which facilitates both the accessibility of individual components of the drive device of the upper feed roller and, in principle, their assembly and / or maintenance.

In the described embodiment, the attachment of the individual drive components is essentially realized by bolt screws, but these can also be implemented by any other form of connection, preferably in the form of releasable connections, in order to facilitate installation and maintenance, in particular the replacement of defective components.

Reference symbol list

1

Shredding arrangement

2

shredding device

3

Feeding device

20

shredding rotor

22

shredding tool

23

Machine frame

24a,b

Page sheet

25a,b

upper edge

30

Feed conveyor device

31

Belt drive

32a,b,c

Lower feed roller

33

Lower feed roller drive motor

40

Retractable swing arm, swing arm

41

Swingarm housing

42a

Air supply connection

42b

Air exhaust port

100

feed roller

101

roller base body

102

inside

105a, b

Bearing support device, bearing ring

106a, b

Storage facility

107

Drive device

108

First ring or disk element, driver ring

109

Second ring or disk element, adapter ring

110

Electric motor

111

Air intake

112

Air outlet

113

Front end section

114

Front end section

115

Cylinder cover

117

Coupling device, coupling

118

Transmission device

119

Middle section

120

Intervention bar

121

Air passage

122

Coupling element, coupling element

130

Radial flange

131

Fastening bolts

140

ring gear flange

141

Fastening bolts

E

Axis of rotation of the upper feed roller

S

Pivot axis

Z

Feeding device

Claims (14)

1. Crushing device (1) for crushing material to be crushed, such as domestic waste, industrial waste, plastic, wood, paper and/or biomass, comprising a crushing means (2), which is arranged on a machine frame (23), and a feed device (3) having at least one feed roller (100), which can be driven to rotate by means of an associated drive device, for feeding the material to be crashed to the crushing means, characterized in that the feed roller is designed to receive the associated drive device (107) and the drive device () has an electric motor (110), a transmission device (118) and a flexible coupling (117).
2. Crushing device (1) according to claim 1, characterized in that the feed roller (100) comprises a hollow cylindrical roller base body (101) accommodating the drive device (107).
3. Crushing device (1) according to claim 1 or 2, characterized in that the flexible coupling (117) is designed as an axially plug-in coupling and is connected on the input side to an output side of the transmission device (118).
4. Crushing device (1) according to claim 2 or 3, characterized in that the flexible coupling (117) has a first ring or disc element (108) on the output side, which is fastened to an inner side of the roller base body (101), wherein the flexible coupling (117) has a second ring or disc element (109) on the input side, and wherein the first (108) and second ring or disc element (109) are operatively connected by means of at least one flexible coupling element (122) for power and torque transmission.
5. Crushing device (1) according to claim 4, characterized in that said transmission device (118) extends axially in sections through said first and second ring elements (108, 109) of said flexible coupling (117).
6. Crushing device (1) according to any one of claims 2 to 5, characterized in that a bearing support device (105a, b) extending axially into the roller base body (101) is respectively arranged in the region of longitudinal end sections of the roller base body, on which bearing support device (105a, b) the roller base body (101) is supported on its inner side (102) via a respective bearing device (106a, b), such as a sliding bearing device.
7. Crushing device (1) according to claim 6, characterized in that the bearing support devices (105a, b) are fastened in a rotationally fixed manner to the machine frame (23) or in a rotationally fixed manner to a rocker (40) of the feed device (3), which is arranged movably about a pivot axis (S) relative to the machine frame (23) for adapting an intake or feed gap to the material to be crushed.
8. Crushing device (1) according to any one of claims 6 or 7, characterized in that at least one of the bearing support devices is designed as a bearing ring (105a, b) which carries the associated bearing device (106a, b), in particular a bearing bush such as a plain bearing bush, for supporting the roller base body (101) with respect to the bearing support device (105a, b).
9. Crushing device (1) according to any one of claims 6 to 8, characterized in that one of the bearing support devices (105a, b) is adapted and formed to support an assembly comprising the motor (110), the transmission device (117), and a transmission-side ring or disc element (109) of the flexible coupling (117).
10. Crushing device (1) according to any one of claims 2 to 9, characterized in that a fan device is provided for dissipating waste heat of the drive device (107), in particular of the electric motor (110) and/or of the transmission device (118).
11. Crushing device (1) according to claim 10,
    characterized in that an air inlet (111) is arranged at one end face of the roller base body (113) and an air outlet (112) is arranged at the other end face of the roller base body (114), and the fan device is constructed and arranged to generate a predetermined air flow rate, in particular in dependence on an actual value of the engine power, through the roller base body (101) in the axial direction.
12. Crushing device (1) according to any one of claims 7 to 11, characterized in that side plates (24a, b) extending parallel to the feed direction are fastened to the machine frame (23) in the region of the rocker (40), the rocker (40) being arranged pivotably in the transverse direction between the side plates (24a, b) in such a way that, in an operating position of the rocker (108), the axis of rotation of the feed roller (E) lies below an upper edge (25a, b) of the side plates (24a, b).
13. Crushing device (1) according to any one of claims 1 to 12, characterized in that the electric motor (110) is supplied by a frequency converter for providing a supply AC voltage with predetermined amplitude and frequency for setting a predetermined rotational speed and/or rotational acceleration of the feed roller (100).
14. Crushing device (1) according to any one of claims 1 to 13, characterized in that the crushing means (2) comprises a crushing rotor (20) which is driven by a further drive device and has on its circumference at least one crushing tool (22), in particular a plurality of crushing tools (2), the crushing device having a control device which controls the drive device of the crushing rotor (20) and the drive device of the feed roller (100) for feeding and crushing the material to be crushed in a coordinated manner.

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