Material processing device, in particular crushing system

Abstract

The invention relates to a material processing device, in particular a crushing plant, (10) for crushing mineral material, with an internal combustion engine, (41) which can be mechanically coupled to a crushing unit (40) via a drive train (90) in order to drive the latter, wherein the drive train (90) has a motor coupling (91) by means of which the internal combustion engine (41) can be selectively coupled to or disconnected from the drive train (90) for the transmission of drive power, wherein the drive train (90) has a crushing unit coupling (93) by means of which the crushing unit (41) can be selectively coupled to or disconnected from the drive train (90), and wherein the drive train has a motor generator (92) with a motor rotor (92.6) and a motor stator (92.8) which in a first operating mode provides mechanical work to drive the crushing unit (40) and which in a second operating mode is driven by the internal combustion engine (41) to generate electrical current. In order to achieve a performance-optimized and compact integration of the motor-generator (92) in such a material processing device, the invention provides that the motor rotor (92.6) of the motor-generator (92) has a motor-generator shaft (92.1), that the motor-generator shaft (92.1) is rotationally fixed to the output side of the motor coupling (91), and that the motor-generator shaft (92.1) is rotationally fixed to the input side of the crushing unit coupling (93).

Description

[0001] The invention relates to a material processing device, in particular a crushing plant, for crushing mineral material, with an internal combustion engine which can be mechanically coupled to a crushing unit via a drive train in order to drive the latter, wherein the drive train has a motor coupling by means of which the internal combustion engine can be selectively coupled to or disconnected from the drive train for the transmission of drive power, wherein the drive train has a crushing unit coupling by means of which the crushing unit can be selectively coupled to or disconnected from the drive train, and wherein the drive train has a motor generator with a motor rotor and a motor stator which, in a first operating mode (motor operation), provides mechanical work for driving the crushing unit and which, in a second operating mode (generator operation), is driven by the internal combustion engine.to generate electricity.

[0002] Material processing equipment within the meaning of the invention can be crushing plants, in particular rotary impact crushers, cone crushers or jaw crushers.

[0003] From EP 3 804 859, a material processing device is known that can be used for crushing mineral material. This material processing device has an internal combustion engine that drives a gearbox via a freewheel clutch. A further clutch is provided at one output of the gearbox. Downstream of this further clutch, a crushing unit is driven via a belt drive. The gearbox has two output shafts. Each of these output shafts drives a motor-generator. When the internal combustion engine provides drive power during operation, this power is supplied to the crushing unit via the drive train, which includes the freewheel clutch, the gearbox, and the clutch. A portion of the drive power of the internal combustion engine is fed into the motor-generators as mechanical work via the output shafts of the gearbox.The motor-generators produce alternating current (AC), which is converted into direct current (DC) by converters. The DC from the converters is then combined in a bus line and fed to another converter. This further converter converts the DC back into AC and feeds it into a main circuit of the material processing equipment. Various motors are connected to this main circuit, thus supplying them with electrical energy. In a second operating mode, electrical energy is fed into the main circuit and supplied to the motor-generators via the previously described wiring system. These motor-generators generate mechanical power from the supplied current, which can be transmitted to the gearbox via the drive shafts.In this operating state, the combustion engine is switched off, allowing the mechanical work provided by the motor-generators to be transferred to the crushing unit via the drivetrain. The freewheel clutch prevents the combustion engine from being dragged along in this operating state.

[0004] The object of the invention is to provide a material processing device of the type mentioned above, which enables effective power transmission to the crushing unit in a compact design.

[0005] This task is solved by the motor rotor of the motor generator having a motor-generator shaft, by the motor-generator shaft being rotationally fixed to the output side of the motor coupling, and by the motor-generator shaft being rotationally fixed to the input side of the crushing unit coupling.

[0006] According to the invention, the motor-generator can now be installed in a space-saving manner in the area between the engine coupling and the crushing unit coupling. In the second operating mode, the motor-generator shaft transmits the mechanical work supplied to it by the combustion engine, preferably directly, to the crushing unit, resulting in direct power transmission with low power losses. In the first operating mode, the electrically supplied power is transmitted directly from the motor-generator to the crushing unit coupling via the motor-generator shaft. Here, too, significantly lower power losses are achieved compared to the known design.

[0007] According to one variant of the invention, the drive train can be designed to be particularly compact if the motor-generator shaft is designed as a shaft passing through the motor-generator, which is connected at one end to the motor coupling and at the other end to the crushing unit coupling.

[0008] The motor-generator can be integrated into the drive train in a particularly space-saving manner with minimal construction effort if, according to a possible embodiment of the invention, the motor rotor is provided for in a rotationally fixed manner to the motor-generator shaft. For this purpose, for example, the motor rotor can be provided with a hub that is rotationally fixed to the motor-generator shaft.

[0009] In an alternative design of the motor-generator, the motor rotor can be rotatably coupled to the motor-generator shaft, preferably by means of a gearbox. Since the motor rotor is no longer rigidly connected to the motor-generator shaft, a speed reduction can be implemented between the motor rotor and the motor-generator shaft. This allows the motor-generator to be designed appropriately for a given internal combustion engine so that it optimally fulfills its assigned tasks.

[0010] The design of the gearbox is easily achieved if it is provided that the motor-generator shaft has teeth or is assigned teeth that mesh with at least one gear, and that the gear or gears mesh directly or via at least one further gear with the teeth of the motor rotor.

[0011] One possible embodiment of the invention is such that the motor-generator has an internal rotor. This allows for a high power density and thus high torque in a small installation space, which supports the compact design desired according to the invention.

[0012] According to the invention, it can further be provided that the motor rotor has a rotor winding and the motor stator has a stator winding, and that the number of windings of the rotor winding and the stator winding are identical.

[0013] The material processing device according to the invention can be designed such that in the first operating mode, in which the motor generator provides mechanical work to drive the crushing unit, the motor clutch is opened in such a way that the combustion engine is disconnected from the drive train and the crushing unit clutch is closed, for torque transmission from the motor-generator shaft to the crushing unit, and that the motor generator is supplied with electrical energy via an external voltage supply or an accumulator.

[0014] Furthermore, it may be provided that in the second operating mode, in which the motor generator is driven by the internal combustion engine to generate electrical current, the motor clutch is closed, for torque transmission from the internal combustion engine to the motor rotor and the crushing unit clutch is in the disengaged state, and that the motor stator is connected to a primary network of the material processing equipment, such that alternating current generated by the motor generator is fed into the primary network in the second operating mode and supplied to consumers, in particular one or more electric motors connected to the primary network and / or one or more hydraulic pumps.

[0015] Furthermore, it can be provided that in the third operating mode, in which the motor-generator is driven by the combustion engine to generate electricity, the motor clutch is closed, enabling torque transmission from the combustion engine to the motor rotor, and the crusher clutch is engaged. The motor stator is connected to a primary network of the material processing equipment, such that alternating current generated by the motor-generator is fed into the primary network in the second operating mode and supplied to consumers, in particular one or more electric motors and / or one or more hydraulic pumps connected to the primary network. Because the crusher clutch is also closed, in this mode both the crusher unit is driven by the combustion engine and the plant is supplied with electrical power via the motor-generator.

[0016] The material processing equipment can be a mobile plant, with chassis provided on both sides of the material processing equipment in the direction of travel, and in the second operating mode, electricity generated by the motor generator is supplied to the drive motors of the chassis to enable the material processing equipment to travel.

[0017] In another embodiment of the invention, driving operation can also be achieved when the drive motors are not supplied with electrical energy via the external power supply. In this case, driving operation can be accomplished by activating the combustion engine, which feeds current into the primary network via the motor-generator. This current is then supplied to the drive motors to power the vehicle. It is also possible that the crushing unit is simultaneously driven by the combustion engine during driving operation. Of course, it is also possible for the crushing unit coupling to be open, enabling driving operation only while the crushing unit is disconnected.

[0018] According to the invention, driving operation can also be achieved when the combustion engine is not active. In this case, it can be provided, for example, that the drive motors of the chassis are electrically connected to the primary network and this network to an external power supply in a further operating mode. The drive motors can be designed as direct electric (electric motor drives the drive transmission) or electro-hydraulic (electric motor drives a hydraulic pump).

[0019] The invention will be explained in more detail below with reference to exemplary embodiments illustrated in the drawings. The drawings show: Figure 1 shows a schematic side view of a crushing plant, Figure 2 shows a schematic block diagram of a part of the crushing plant according to Figure 1 in a first operating mode, Figure 3 the representation according to Figure 2 in a second operating mode and, Figure 4 in schematic representation a drive train of the crushing plant according to the Figure 1-3

[0020] Figure 1 Figure 1 shows a processing plant in the form of a crushing plant 10. The crushing plant 10 is designed as a mobile crushing plant and therefore has chassis 15. However, it is also conceivable that the crushing plant 10 is a stationary crushing plant.

[0021] The crushing plant 10 has a chassis 11 which supports the machine components or at least some of the machine components. At its rear end, the chassis 11 has a boom 12. A material feed area is formed in the area of ​​the boom 12.

[0022] The material feed area includes a feed hopper 20 and a material feed device 16.

[0023] The feed hopper 20 can be formed, at least partially, by hopper walls 21 extending in the direction of the longitudinal extent of the crushing plant 10 and a rear wall 22 extending transversely to the longitudinal extent. The feed hopper 20 leads to the material feed device 16.

[0024] The material feed device 16 can, as shown in the present embodiment, have a conveying trough that can be driven by a vibratory drive. Material to be crushed can be fed into the crushing plant 10 via the feed hopper 20, for example by means of a wheel loader, and fed onto the conveying trough.

[0025] From the conveying trough, the material to be shredded enters the area of ​​a screening unit 30. This screening unit 30 can also be referred to as a pre-screening arrangement. At least one screen deck 30.1, 30.2 is arranged in the area of ​​the screening unit 30. In the present embodiment, two screen decks 30.1, 30.2 are used.

[0026] At the upper screen deck 30.1, a partial fraction is screened out of the material to be crushed. This partial fraction already has a sufficient particle size that no longer needs to be crushed in the crushing plant 10. Therefore, this screened partial fraction can be routed in a bypass channel 31 past a crushing unit 40.

[0027] If a second screen deck 30.2 is used in the screening unit 30, a further fine particle fraction can be screened from the sub-fraction that accumulates below the screen deck 30.1. This fine particle fraction is conveyed below the screen deck 30.2 to a side discharge conveyor 32. From the side discharge conveyor 32, the fine particle fraction is discharged and conveyed to a stockpile 70.2 located to the side of the machine.

[0028] How Figure 1As illustrated, the screening unit 30 can be a vibrating screen with a screen drive 33. The screen drive 33 sets the screen deck 30.1 and / or the screen deck 30.2 into vibratory motion. Due to the inclined arrangement of the screen decks 30.1, 30.2, and in conjunction with the vibratory motion, material is transported on the screen decks 30.1, 30.2 towards the crushing unit 40 or the bypass channel 31.

[0029] The material to be crushed, coming from the screen deck 30.1, is fed to the crushing unit 40, as shown here. Figure 1 This can be seen.

[0030] The crushing unit 40 can, for example, be designed as a rotary impact crushing unit. However, it can also be a different crushing unit, such as a jaw crushing unit of a jaw crusher, a cone crusher unit of a cone crusher, or a roller crusher unit of a roller crusher.

[0031] The crushing unit 40 has a crushing rotor 42 which is driven by an internal combustion engine 41. In Figure 1 The rotation axis of the refractive rotor 42 runs horizontally in the direction of the image depth.

[0032] The crushing rotor 42 can, for example, be equipped with impact bars 43 on its outer circumference. Opposite the crushing rotor 42, wall elements, preferably in the form of impact wings 44, can be arranged.

[0033] With the crushing rotor 42 rotating, the material to be crushed is thrown outwards by the impact bars 43. This material then strikes the impact arms 44 and is crushed due to the high kinetic energy. If the material to be crushed has a sufficient particle size to allow the material particles to pass through the gap between the impact arms 44 and the radially outer ends of the impact bars 43, the crushed material leaves the crushing unit 40 via the crusher outlet 45.

[0034] It is conceivable that in the area of ​​the crusher outlet 45, the crushed material coming from the crushing unit 40 is combined with the material coming from the bypass channel 31 and conveyed onto a belt conveyor 13. The belt conveyor 13 can then transport the material out of the working area of ​​the crushing unit 40.

[0035] As the drawings show, the belt conveyor 13 can have an endlessly circulating conveyor belt with a loaded side 13.3 and an unloaded side 13.4. The loaded side 13.3 serves to collect and transport the crushed material that falls from the crusher outlet 45 of the crushing unit 40. At the belt ends, the conveyor belt can be deflected between the loaded side 13.3 and the unloaded side 13.4 by means of deflection rollers 13.1, 13.2. In the area between the deflection rollers 13.1, 13.2, guides, in particular support rollers, can be provided to change the conveying direction of the conveyor belt, to give the conveyor belt a specific shape, and / or to support the conveyor belt.

[0036] The belt conveyor 13 has a belt drive by means of which the belt conveyor 13 can be driven. The belt drive can preferably be arranged at the discharge end 13.5 or in the area of ​​the discharge end 13.5 of the belt conveyor 13.

[0037] The belt conveyor 13 can be connected to a control unit via a control line, for example by means of the belt drive.

[0038] One or more additional belt conveyors 60 and / or a return conveyor 80 may be used, which in principle have the same design as the belt conveyor 13. In this respect, reference can be made to the above explanations.

[0039] In the area between the feed end and the discharge end 13.5, a magnet 14 can be arranged above the load section 13.3. The magnet 14 can be used to lift iron parts from the crushed material and move them out of the conveying area of ​​the belt conveyor 13.

[0040] In the transport direction downstream of the belt conveyor 13, a secondary screening device 50 can be arranged. The secondary screening device 50 has a screen housing 51 in which at least one screen deck 52 is housed. Below the screen deck 52, a lower housing section 53 is formed, which serves as a collection chamber for the material screened out at the screen deck 52.

[0041] The lower part of the housing creates a spatial connection to another belt conveyor 60 via an opening. Here, the second belt conveyor 60 forms its feed area 61, whereby the screened material is directed in the feed area 61 onto the load side of the second belt conveyor 60. The second belt conveyor 60 conveys the screened material to its discharge end 62. From there, the screened material reaches a stockpile 70.1.

[0042] The material not screened at the screen deck 52 of the secondary screen 50 is conveyed from the screen deck 52 onto a conveyor belt 54. The conveyor belt 54 can also be designed as a belt conveyor, so reference can be made to the explanations given above regarding the belt conveyor 13. The conveyance direction of the conveyor belt 54 is in Figure 1 in the direction of the image depth.

[0043] At its discharge end, the conveyor belt 54 transfers the unscreened material, also known as oversize, to the feed area 81 of the return conveyor 80. The return conveyor 80, which can be designed as a belt conveyor, conveys the oversize towards the feed hopper 20. At its discharge end 82, the return conveyor 80 transfers the oversize back into the material flow, preferably into the material feed area. The oversize can then be fed back to the crushing unit 40 and crushed there to the desired particle size.

[0044] Figure 2 Figure 1 shows a schematic representation of the internal combustion engine 41, which drives a drive train 90 via a drive shaft 41.1. The drive train 90 leads to a belt drive by means of which the crushing unit 40 can be driven. The belt drive can be of conventional design and has two deflection pulleys 47, 49 around which an endlessly circulating belt 48 is guided.

[0045] The drive train 90 comprises a motor coupling 91, a motor generator 92 and a crushing unit coupling 93.

[0046] The motor coupling 91 is rotationally fixed to the drive shaft 41.1 of the internal combustion engine 41 on its input side. The output side of the motor coupling 91 is connected to the motor generator 92 and coupled to it on the input side.

[0047] The crushing unit coupling can be rotationally fixed to the input side of the motor generator 92. The output side of the crushing unit coupling 93 is connected directly or indirectly (indirectly, as in the present example by means of the belt drive) to the crushing unit 40.

[0048] The motor generator 92 is connected to an electrical connection 94. This electrical connection 94 allows current generated by the motor generator 92 to be discharged or current to be supplied to the motor generator 92 when it is to be operated as an electric motor.

[0049] The electrical connection 94 can be coupled to a converter 95. The converter 95, in turn, is connected to a primary network 96 of the crushing plant 10.

[0050] The converter 95 is designed to convert the current supplied to it by the motor-generator 92 into a form suitable for the primary network 96. It is also conceivable that the converter 95 is designed to convert the current provided by the primary network 96 into a suitable form to supply the motor-generator 92 with power.

[0051] Electrical loads of the material processing equipment are connected to the primary network 96. These electrical loads can include, for example, one or more electric motors, such as direct electric motors 99 for the hydraulic system 97 / 98, driving the material feed unit 16 (e.g., the vibratory drive), the screening unit (e.g., the screen drive), the belt drives of the belt conveyors, the secondary screening device 50, and / or another machine (not shown). It is also conceivable that the electric drive motors of the chassis 15 are connected to the primary network 96. Additionally or alternatively, the magnet 15 or other electrical loads may also be connected.

[0052] Figure 2Figure 100 also illustrates that an external power supply can be connected to the primary network 96. The external power supply 100 can be a battery or the public power grid.

[0053] Figure 2 Figure 1 illustrates a first operating mode of the material processing equipment. In this operating mode, the internal combustion engine 41 is activated and generates mechanical work at its drive shaft 41.1. The engine clutch 91 and the crusher clutch 93 are engaged. In this way, the internal combustion engine 41 can transmit the mechanical work it generates to the drive shaft 46. Via the belt drive, the mechanical work is transmitted to the crusher 40, enabling the crusher 40 to perform crushing work as intended.

[0054] Simultaneously, the motor-generator 92 can also be driven by the internal combustion engine 41. The motor-generator 92 then generates electricity, which is supplied to the converter 95 via the electrical connection 94. The converter 95 converts the supplied electricity into a suitable form and feeds it into the primary network 96. In the primary network 96, the electricity is then made available to one or more of the aforementioned electrical consumers.

[0055] Figure 3This shows another operating mode. As this illustration shows, current is fed into the primary network 96 via the external power supply 100. This current can be supplied to one or more of the electrical consumers mentioned above via the primary network 96. Additionally, the current supplied by the external power supply can also be fed to the converter 95. The converter 95 converts the current into a suitable form to supply it to the motor-generator 92. The motor-generator 92 generates mechanical drive power from the current supplied to it. This mechanical drive power is transmitted to the crusher coupling 93, which is in the engaged state. In this way, the mechanical work can be supplied via the output shaft 46 to the belt drive and thus to the crusher 40, enabling it to operate as intended.

[0056] In the second operating mode, the motor clutch 91 may be open. This prevents the combustion engine 41, which is deactivated in the second operating state, from being dragged along.

[0057] Figure 3 This illustrates that driving is also possible in a third operating mode. For this purpose, electrical current is supplied to the drive motors of the bogies 15 via the external power supply 100. The electrical connection from the primary network 96 to the motor-generator 92 can be interrupted in this state by means of a switch. However, it is also conceivable that crushing operation is carried out during driving. In this state, the electrical connection from the primary network 96 to the motor-generator 92 is switched on, so that it generates mechanical drive power and, with the crusher unit clutch 93 closed, this power is transferred to the crusher unit 40.

[0058] Figure 2This illustrates that driving is also possible during the first operating mode. In this case, the electrical energy generated by the motor-generator 92 is supplied to the drive motors of the bogies 15. However, if crushing operation is not desired during driving, the crusher unit coupling 93 can be opened, thus decoupling the crusher unit 40 from the drive train 90.

[0059] Figure 4This illustrates a possible configuration of the motor-generator 92. As this illustration shows, the motor-generator 92 has a housing 110. The motor-generator shaft 92.1 is rotatably mounted within this housing 110. A circumferential toothing 92.2 is connected to the motor-generator shaft 92.1, or the motor-generator shaft 92.1 has such circumferential toothing 92.2. At least one gear 92.3 meshes with this toothing 92.2. The gear 92.3 is also rotatably mounted in the housing 110, for example by means of a bearing shaft 92.4, which is supported on its opposite sides. It can now be provided that at least one further gear meshes with each of the gears 92.3. This at least one further gear or gear 92.3 meshes with a toothing 92.5 of a motor rotor 92.6 of the motor generator 92. For this purpose, the motor rotor 92.6 can, for example, be designed as a hollow shaft.

[0060] Thus, the toothing 92.2, the one or more gears 92.3 and optionally the other gears form a reduction gear with which the speed between the motor-generator shaft 92.1 and the motor rotor 92.6 can be translated.

[0061] How Figure 4 To further illustrate, the motor rotor 92.6 may be provided with a rotor winding 92.7. This rotor winding 92.7 is opposite a motor stator 92.8, which is fixedly mounted to the housing. The motor stator 92.8 has a motor stator winding 92.9, which is electrically connected to the connection 94.

[0062] Instead of the one in Figure 4 In the illustrated setup, it is also possible that no speed reduction takes place between the motor-generator shaft 92.1 and the motor rotor 92.6. For this purpose, the motor-generator shaft 92.1 may be connected to the motor-generator 92.6 in a rotationally fixed manner, for example via a hub.

[0063] Figure 4 This illustrates that the motor-generator shaft 92.1 can be connected, preferably directly, to the output side of the motor coupling 91 and also, preferably directly, to the input side of the crushing unit coupling 93. Thus, the motor-generator shaft 92.1 can be a shaft that passes through the motor-generator 92.

[0064] When the motor-generator 92 is operated as an electric motor, current is supplied to the motor stator 92.8 via the connection 94. This induces a magnetic field, which causes the motor rotor 92.6 to rotate. This rotational movement is either transmitted indirectly to the motor-generator shaft 92.1 via the gear(s) 92.3 and the teeth 92.2, or the rotation is transmitted directly to the motor-generator shaft 92.1. When the motor coupling 91 is open, the motor-generator 92, operating as an electric motor, can then drive the belt drive and thus the crushing unit 40 via the closed crusher coupling 93 and the drive shaft 46.

[0065] If the motor-generator 92 is to be operated in generator mode, the internal combustion engine 41 is activated and the motor clutch 91 is closed. This causes the internal combustion engine 41 to drive the motor-generator shaft 92.1 and set the motor rotor 92.6 into rotation. Due to the electromagnetic field acting between the motor rotor 92.6 and the motor-generator 92.8, the current generated in the motor stator 92.8 is conducted via the connection 94. In this operating state, either the crusher clutch 93 can be open, or it is also conceivable that the crusher 40 is operated with the crusher clutch closed.

Claims

1. A material processing device, in particular a crusher (10) for crushing mineral material, having an internal combustion engine (41) which can be mechanically coupled to a crusher unit (40) via a drive train (90) to drive the latter, the drive train (90) having a motor coupling (91) by means of which the internal combustion engine (41) can be selectively coupled to the drive train (90) for transferring drive power or uncoupled therefrom, wherein the drive train (90) comprises a crusher unit coupling (93) by means of which the crusher unit (41) can be selectively coupled to or uncoupled from the drive train (90), wherein the drive train comprises a motor generator (92) comprising a motor rotor (92.6) and a motor stator (92.8), which, in a first mode of operation (motor operation) provides mechanical work for driving the crusher unit (40) and which, in a second mode of operation (generator operation), is driven by the internal combustion engine (41) to generate electrical power, characterized in that the motor rotor (92.6) of the motor generator (92) comprises a motor generator shaft (92.1), in that the motor generator shaft (92.1) is coupled to the output end of the motor coupling (91) in a rotationally fixed manner, and in that the motor generator shaft (92.1) is coupled to the input end of the crusher unit coupling (93) in a rotationally fixed manner.

2. The material processing device according to claim 1, characterized in that the motor generator shaft (92.1) designed as a shaft passing through the motor generator (92), one end of which is connected to the motor coupling (91) and at the other end of which is connected to the crusher unit coupling (93).

3. The material processing device according to claim 1 or 2, characterized in that the motor rotor (92.6) is coupled to the motor generator shaft (92.1) in a rotationally fixed manner.

4. The material processing device according to claim 1 or 2, characterized in that the motor rotor (92.6) is rotatably coupled to the motor generator shaft (92.1), preferably by means of a transmission.

5. The material processing device according to claim 4, characterized in that the motor generator shaft (92.1) has or is assigned a toothing (92.2), in that at least one gear (92.3) meshes with the toothing (92.2), and in that a toothing (92.5) of the motor rotor (92.5) meshes directly with the gear (92.3) or with the interposition of at least one further gear.

6. The material processing device according to any of claims 1 to 5, characterized in that the motor rotor (92.6) of the motor generator (92) is designed in the form of an internal rotor.

7. The material processing device according to any of claims 1 to 6, characterized in that the motor rotor (92.6) comprises a rotor winding (92.7) and the motor stator (92.8) comprises a stator winding (92.9), and in that the number of windings of the rotor winding (92.7) and the stator winding (92.9) are identical.

8. The material processing device according to any of claims 1 to 7, characterized in that in the first operating mode, in which the motor generator (92) provides mechanical work for driving the crusher unit (40), the motor coupling (91) is opened in such a way that the internal combustion engine (41) is disconnected from the drive train (90) and the crusher unit coupling (93) is closed, for torque transmission from the motor generator shaft (92.1) to the crusher unit (40), and in that the motor generator (92) is supplied with electrical energy via an external voltage supply or an accumulator.

9. The material processing device according to any of claims 1 to 8, characterized in that in the second operating mode, in which the motor generator (92) is driven by the internal combustion engine (41) to generate electric power, the motor coupling (91) is closed for torque transfer from the internal combustion engine (41) to the motor rotor (92.6) and the crusher unit coupling (93) is in the disengaged state, and in that the motor stator (92.8) is connected to a primary grid (96) of the material processing device such that alternating current generated by the motor generator (92) is fed into the primary grid (96) in the second operating mode and is supplied to loads, in particular to one or more electric motors (97, 99) connected to the primary grid (96).

10. The material processing device according to any of claims 1 to 9, characterized in that in a third mode of operation, in which the motor generator (92) is driven by the internal combustion engine (41) to generate electric power, the motor coupling (91) is closed for torque transfer from the internal combustion engine (41) to the motor rotor (92.6) and the crusher unit coupling (93) is in the engaged state, and in that the motor stator (92.8) is connected to a primary grid (96) of the material processing device such that alternating current generated by the motor generator (92) is fed into the primary grid (96) in the second operating mode and is supplied to loads, in particular to one or more electric motors (97, 99) connected to the primary grid (96).

11. The material processing device according to any of claims 1 to 10, characterized in that undercarriages (15) are provided on both sides of the material processing device extending in the direction of travel, in that in the second mode of operation, power generated by the motor generator (92) is supplied to traction motors of the undercarriages (15) to enable driving mode of the material processing device.

12. The material processing device according to any of the preceding claims, characterized in that the traction motors of the undercarriages (15) in a third operating mode are electrically connected to the primary grid (96) and the latter is connected to an external power supply (100).

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