Material processing apparatus, in particular a crusher

Abstract

The invention relates to a material processing device having an internal combustion engine, which can be mechanically coupled via a drive train to a crusher unit for driving the crusher unit, the drive train having a motor coupling, by means of which the internal combustion engine can be selectively coupled to the drive train for transmitting drive power or decoupled therefrom, the drive train comprising a crusher unit coupling, by means of which the crusher unit can be selectively coupled to the drive train or decoupled therefrom, the drive train comprising a motor generator, which comprises a motor rotor and a motor stator, the motor generator providing mechanical work for driving the crusher unit in a first operating mode and being driven by the internal combustion engine for generating electrical power in a second operating mode. According to the invention it is provided that the motor rotor of the motor generator comprises a motor generator shaft, which is coupled in a rotationally fixed manner to an output of the motor coupling and in a rotationally fixed manner to an input of the crusher unit coupling.

Description

Technical Field

[0001] This invention relates to a material handling apparatus for crushing mineral materials, particularly a crusher, comprising an internal combustion engine mechanically coupled to a crusher unit via a drive system to drive the crusher unit. The drive system has a motor coupler through which the internal combustion engine can be selectively coupled to the drive system to transmit drive power or decoupled from the drive system. The drive system includes a crusher unit coupler through which the crusher unit can be selectively coupled to or decoupled from the drive system. The drive system includes a motor generator comprising a motor rotor and a motor stator. In a first operating mode (motor operation), the motor generator provides mechanical work for driving the crusher unit, while in a second operating mode (generator operation), it is driven by the internal combustion engine to generate electrical power. Background Technology

[0002] The material handling apparatus according to the invention can be a crusher, particularly a rotary impact crusher, a cone crusher, or a jaw crusher.

[0003] A material handling apparatus is known from EP 3804859, which can be used to crush mineral materials. This material handling apparatus has an internal combustion engine that drives a transmission via a flywheel clutch. Another coupler is disposed at the output of the transmission. Downstream of this other coupler, a belt drive is used to drive a crushing unit. The transmission has two output shafts. Each of these output shafts drives a motor generator. If the internal combustion engine provides drive power during operation, it is made available to the crushing unit via a drive system comprising a flywheel clutch, transmission, and coupler. A portion of the drive power of the internal combustion engine is transmitted as mechanical work to the motor generator via the output shaft of the transmission. The motor generator generates alternating current, which is converted to direct current in a converter. The direct current from the converter is then combined in a bus line and fed to another converter. The other converter converts the direct current back to alternating current and feeds it to the main power circuit of the material handling apparatus. Various motors are connected to the main circuit, and electrical energy can be supplied to the main circuit in this manner. In a second operating mode, electrical energy is fed into the main circuit and supplied to the motor generator via the previously described wiring system. These motor generators produce mechanical power from the supplied current, which can be fed to the transmission via the drive shaft. In this operating state, the internal combustion engine is shut off, allowing the mechanical work provided by the motor generators to be transmitted to the crushing unit via the drive system. The flywheel clutch prevents the internal combustion engine from being dragged in this operating state. Summary of the Invention

[0004] The present invention solves the problem of providing a material handling device of the type mentioned above, which achieves efficient power transfer to the crushing unit in a compact design.

[0005] The solution to this problem is that the motor rotor of the motor generator includes a motor generator shaft, which is rotatably and fixedly coupled to the output end of the motor coupler, and the motor generator shaft is rotatably and fixedly coupled to the input end of the crusher unit coupler.

[0006] According to the present invention, the motor generator can now be installed in the construction area between the motor coupler and the crusher unit coupler to save space. In the second operating mode, the mechanical work supplied to it by the motor generator shaft is transmitted (preferably directly) to the crusher unit, resulting in direct power transmission with low power loss. In the first operating state, the power supplied by electricity is transmitted directly from the motor generator to the crusher unit coupler via the motor generator shaft. Here, there is also a significantly lower power loss compared to the standard design.

[0007] According to a variation of the invention, if the motor-generator shaft is designed to pass through the motor-generator shaft, with one end connected to the motor coupler and the other end connected to the crusher unit coupler, the drive system can be manufactured to be particularly compact.

[0008] According to a possible design variation of the invention, if the motor rotor is specified to be rotatably fixedly connected to the motor-generator shaft, the motor-generator can be integrated into the drive system in a particularly space-saving manner with minimal construction work. For this purpose, for example, the motor rotor can be specified to have a hub that is rotatably fixedly connected to the motor-generator shaft.

[0009] In alternative designs for motor-generators, it can be specified that the motor rotor is rotatably coupled to the motor-generator shaft, preferably via a transmission. Because the motor rotor is no longer rigidly connected to the motor-generator shaft, the speed between the motor rotor and the motor-generator shaft can be reduced. This makes it feasible to design the motor-generator appropriately for a given internal combustion engine to accomplish the specified task in the best possible way.

[0010] If the motor generator shaft is specified to have or be assigned teeth, at least one gear meshes with the teeth, and the teeth of the motor rotor directly mesh with one or more gears or are inserted into at least one additional gear, then the transmission design works well in a simple manner.

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

[0012] According to the present invention, the motor rotor may also include a rotor winding, the motor stator may include a stator winding, and the rotor winding and the stator winding may have the same number of windings.

[0013] The material handling apparatus according to the invention can be designed such that, in a first operating mode, a motor generator provides mechanical work for driving a crushing unit, a motor coupler is opened to disconnect the internal combustion engine from the drive system, and a crushing unit coupler is closed for torque transmission from the motor generator shaft to the crushing unit, and the motor generator is supplied with electrical energy via an external voltage source or accumulator.

[0014] Furthermore, in the second operating mode where the motor generator is driven by an internal combustion engine to generate electrical power, it can be specified that the motor coupler is closed to transmit torque from the internal combustion engine to the motor rotor, and the crusher unit coupler is in a disengaged state, and the motor stator is connected to the main power grid of the material handling device, such that the alternating current generated by the motor generator is fed into the main power grid and supplied to the load in the second operating mode, particularly to one or more electric motors connected to the main power grid and / or connected to one or more hydraulic pumps.

[0015] Furthermore, in the third operating mode where the motor generator is driven by the internal combustion engine to generate electrical power, the motor coupler can be specified to be closed to transmit torque from the internal combustion engine to the motor rotor. The crusher unit coupler is engaged, and the motor stator is connected to the main power grid of the material handling unit. This allows the alternating current generated by the motor generator in the second operating mode to be fed into the main power grid and supplied to the load, particularly to one or more electric motors connected to the main power grid and / or connected to one or more hydraulic pumps. Because the crusher coupler is also closed, in this mode, the crusher unit is driven by the internal combustion engine, and the equipment is also supplied with electrical power via the motor generator.

[0016] The material handling device can be a mobile device, wherein the base frame is arranged on both sides of the material handling device extending in the direction of travel, and wherein in a second operating mode, power generated by a motor generator is supplied to the traction motor of the base frame to realize the driving mode of the material handling device.

[0017] In another embodiment of the invention, a drive mode can be implemented when the traction motor is not powered by an external power source. The drive mode can then be achieved by starting the internal combustion engine and feeding power to the main grid via a motor generator, allowing the traction motor to obtain power for the drive mode. Specifically, the internal combustion engine can drive the crusher unit in drive mode. However, it is also possible, of course, for the crusher unit coupler to be open, making drive-only mode possible, and the crusher unit decoupled.

[0018] According to the present invention, a driving mode can also be implemented when the internal combustion engine is not operating. In this case, for example, it can be specified that the traction motor of the chassis is electrically connected to the main power grid in another operating mode, and the main power grid is connected to an external power source. The traction motor can be directly electric (electric motor drives traction gear) or electro-hydraulic (electric motor drives hydraulic pump). Attached Figure Description

[0019] The invention will now be explained in more detail with reference to the exemplary embodiments shown in the accompanying drawings.

[0020] Figure 1 A schematic side view of the crusher is shown;

[0021] Figure 2 The first operating mode is shown. Figure 1 A schematic block diagram of a part of a crusher;

[0022] Figure 3 The second operating mode is shown. Figure 2 The representation of;

[0023] Figure 4 It shows Figures 1 to 3 A schematic diagram of the drive system of the crusher. Detailed Implementation

[0024] Figure 1 A processing device in the form of a crusher 10 is shown. The crusher 10 is designed as a mobile crusher and therefore has a base frame 15. However, it is also conceivable that the crusher 10 is a stationary crusher.

[0025] The crusher 10 has a chassis 11 that supports machine parts or at least a portion of machine parts. The chassis 11 has a cantilever 12 at its rear end. A material feed area is formed in the area of ​​the cantilever 12.

[0026] The material feeding area includes a feeding hopper 20 and a material feeding device 16.

[0027] The feed hopper 20 may be formed at least partially by a hopper wall 21 and a rear wall 22, the hopper wall 21 extending in the longitudinal direction of the crusher 10 and the rear wall 22 extending transversely to the longitudinal direction. The feed hopper 20 leads to the material feeding device 16.

[0028] As shown in this exemplary embodiment, the material feeding device 16 may have a conveyor chute, which can be driven by a vibration driver. The feed hopper 20 can be used, for example, to feed the material to be crushed into the crusher 10 and onto the conveyor chute using a wheel loader.

[0029] The material to be crushed enters the area of ​​the screen unit 30 from the conveyor chute. This screen unit 30 can also be referred to as a pre-screening arrangement. At least one screen plate 30.1, 30.2 is disposed in the area of ​​the screen unit 30. In this exemplary embodiment, two screen plates 30.1, 30.2 are used.

[0030] A portion of the material to be crushed is screened out at the upper screen plate 30.1. This portion of the material already has a sufficient particle size to no longer require further crushing in the crusher 10. In this respect, this screened portion of the material can be guided through the bypass channel 31 through the crusher unit 40.

[0031] If a second screen plate 30.2 is used in the screen unit 30, additional fine particle fractions can be screened from the fractions accumulated below the screen plate 30.1. These fine particle fractions are then conveyed to a side-discharge conveyor 32 below the screen plate 30.2. The fine particle fractions are transferred from the side-discharge conveyor 32 and conveyed to a rock pile 70.2 located on the side of the machine.

[0032] like Figure 1 As shown, the screen unit 30 can be a vibrating screen with a screen drive 33. The screen drive 33 causes the screen plate 30.1 and / or screen plate 30.2 to vibrate. Due to the inclined arrangement of the screen plates 30.1 and 30.2 and in combination with the vibration motion, the material on the screen plates 30.1 and 30.2 is conveyed toward the crusher unit 40 or toward the bypass channel 31.

[0033] The material to be crushed, guided and conveyed from the screen plate 30.1, is then conveyed to the crusher unit 40, such as... Figure 1 As shown in the image.

[0034] The crusher unit 40 can be designed as a rotary impact crusher unit. However, it can also be another type of crusher unit, such as a jaw crusher unit of a jaw crusher, a cone crusher unit of a cone crusher, or a roll crusher unit of a roll crusher.

[0035] The crusher unit 40 has a crushing rotor 42 driven by an internal combustion engine 41. Figure 1 In the image, the axis of rotation of the crushing rotor 42 is horizontal in the direction of image depth.

[0036] For example, the outer periphery of the crushing rotor 42 may be equipped with an impact rod 43. Opposite to the crushing rotor 42, a wall element may be provided, preferably in the form of an impact rocker arm 44.

[0037] When the crushing rotor 42 rotates, the impact rod 43 throws the material to be crushed outward. The material then impacts the impact rocker arm 44 and is crushed due to high kinetic energy. When the material to be crushed has a sufficient particle size to allow the particles to pass through the gap between the radially outer ends of the impact rocker arm 44 and the impact rod 43, the crushed material exits the crushing unit 40 through the crusher outlet 45.

[0038] It is conceivable that in the area of ​​the crusher outlet 45, the crushed material guided and conveyed from the crusher unit 40 is combined with the material guided and conveyed from the bypass channel 31 and transferred to the belt conveyor 13. The belt conveyor 13 can be used to transport the material out of the working area of ​​the crusher unit 40.

[0039] As shown in the figure, the belt conveyor 13 may include an annular circulating conveyor belt having a slack side 13.3 and a tight side 13.4. The slack side 13.3 is used to capture and transport crushed material falling from the crusher outlet 45 of the crusher unit 40. At the belt ends, deflector rollers 13.1, 13.2 may be used to deflect the conveyor belt from the slack side 13.3 to the tight side 13.4 and vice versa. Guides (particularly support rollers) may be provided in the area between the deflector rollers 13.1, 13.2 to change the conveying direction of the conveyor belt in order to shape and / or transport the belt in a certain way.

[0040] The belt conveyor 13 has a belt driver that can be used to drive the belt conveyor 13. The belt driver may preferably be located at or in the area of ​​the discharge end 13.5 of the belt conveyor 13.

[0041] The belt conveyor 13 can be connected to a control device, for example, via a belt drive and control lines.

[0042] One or more additional belt conveyors 60 and / or return conveyors 80 may be used, which in principle have the same design as belt conveyor 13. In this regard, reference can be made to the above description.

[0043] Magnet 14 can be positioned above the relaxation side 13.3 in the area between the feed end and the discharge end 13.5. Magnet 14 can be used to lift the iron portion of the crushed material and remove it from the conveying area of ​​the belt conveyor 13.

[0044] A re-screening device 50 may be installed downstream of the belt conveyor 13. The crushing unit 50 has a screen shell 51 in which at least one screen plate 52 is installed. A shell base 53 is formed below the screen plate 52, which serves as a collection space suitable for the material screened at the screen plate 52.

[0045] An opening in the lower housing portion forms a spatial connection with another belt conveyor 60. Here, the other belt conveyor 60 forms its feed area 61, in which the screened material in the feed area 61 is guided to the slack side of the other belt conveyor 60. The other belt conveyor 60 conveys the screened material toward its discharge end 62. From there, the screened material is transferred to the rock pile 70.1.

[0046] Material not screened at screen plate 52 of the re-screening device 50 is conveyed from screen plate 52 to branch belt 54. Branch belt 54 can also be designed as a belt conveyor, i.e., refer to the explanation given above regarding belt conveyor 13. Figure 1 In the image, the conveying direction of the branch belt 54 extends in the direction of image depth.

[0047] At its discharge end, branch belt 54 conveys unscreened material (also known as oversized material) to the feed area 81 of return conveyor 80. Return conveyor 80 (which may be a belt conveyor) conveys the oversized material toward feed hopper 20. At its discharge end 82, return conveyor 80 conveys the oversized material back into the material flow, particularly preferably to the material feed area. Thus, the oversized material can be returned to crushing unit 40 and crushed into the desired particle size.

[0048] Figure 2 A schematic diagram of an internal combustion engine 41 is shown, which drives a drive system 90 via a drive shaft 41.1. The drive system 90 leads to a belt drive, which can be used to drive the crusher unit 40. The belt drive can be of a conventional design and has two deflecting pulleys 47, 49, around which an annular circulating belt 48 is guided.

[0049] The drive system 90 includes a motor coupler 91, a motor generator 92, and a crusher unit coupler 93.

[0050] At its input, the motor coupler 91 is rotatably fixed to the drive shaft 41.1 of the internal combustion engine 41. The output of the motor coupler 91 is connected to the motor generator 92 and coupled thereto at its input.

[0051] At the output of the motor generator 92, the crusher unit coupler 93 can be rotatably coupled to the input. The output of the crusher unit coupler 93 is directly or indirectly (indirectly, as in this example, via a driver) connected to the crusher unit 40.

[0052] The motor generator 92 is connected to the electrical connector 94. The electrical connector 94 can be used to dissipate the current generated by the motor generator 92, or, if the motor generator 92 is operating as an electric motor, current can be supplied to the motor generator 92.

[0053] Electrical connector 94 can be coupled to converter 95. Converter 95 is in turn connected to the main power grid 96 of crushing equipment 10.

[0054] The converter 95 is designed to convert the current supplied here by the motor generator 92 into a form suitable for the main power grid 96. It is conceivable that the converter 95 is also adapted to convert the power supplied by the main power grid 96 into a form suitable for supplying power to the motor generator 92.

[0055] The electrical loads of the material handling unit are connected to the main power grid 96. For example, one or more electric motors (e.g., for hydraulic systems 97 / 98) or direct electric motors 99 can be connected to drive the material feeding device 16 (e.g., a vibration driver), screen unit (e.g., a screen driver), belt drive of a belt conveyor, rescreening device 50, and / or another working machine (not shown), which are electrical loads. It is also conceivable that the electric traction motor of the base frame 15 is connected to the main power grid 96. Additionally or alternatively, it may be specified to connect magnet 15 or other electrical loads.

[0056] Figure 2 It is also shown that an external power source 100 can be coupled to the main power grid 96. The external power source 100 can be a battery or the public power grid.

[0057] Figure 2 The first operating mode of the material handling device is shown. In this operating mode, the internal combustion engine 41 is started and generates mechanical work at its drive shaft 41.1. The motor coupler 91 and the crusher coupler 93 are closed. In this way, the internal combustion engine 41 can transmit the mechanical work it generates to the drive shaft 46. The mechanical work is transmitted via a belt drive to the crusher unit 40 to perform the crushing work as intended.

[0058] Simultaneously, the internal combustion engine 41 can also drive the motor generator 92. In this way, the motor generator 92 generates current, which is guided to the converter 95 via the electrical connector 94. The converter 95 converts the supplied current into a suitable form and guides it to the main power grid 96. In the main power grid 96, the electricity is then made available to one or more of the electrical loads mentioned above.

[0059] Figure 3 Another operating mode is illustrated. As shown, power is supplied to the main grid 96 via an external power source 100. This power can be supplied via the main grid 96 to one or more of the electrical loads mentioned above. Additionally, the current supplied by the external power source can also be supplied to a converter 95. The converter 95 converts the current into a suitable form for use by the motor generator 92. The motor generator 92 generates mechanical drive power via the supplied current. This mechanical drive power is transmitted to the crusher unit coupler 93, which is in the engaged state. In this way, mechanical work can be provided to the belt drive via the output shaft 46, and thus to the crusher 40, enabling the crusher 40 to perform its intended operation.

[0060] Specifically, in the second operating mode, the motor coupler 91 can be open. This prevents the internal combustion engine 41, which is inactive in the second operating state, from being driven.

[0061] Figure 3 The third operating mode also demonstrates the possibility of a drive mode. For this purpose, current is supplied to the traction motor of the chassis 15 via an external power supply 100. In this state, the electrical connection from the main power grid 96 to the motor generator 92 can be interrupted using a switch. However, it is also conceivable to perform crushing in drive mode. In this state, an electrical connection is established from the main power grid 96 to the motor generator 92, causing the motor generator 92 to generate mechanical drive power. This mechanical drive power is transferred to the crusher unit 40 when the crusher unit coupler 93 is closed.

[0062] Figure 2 It is shown that a drive mode is also possible in the first operating mode. In this case, the electrical power generated by the motor generator 92 is supplied to the traction motor of the underframe 15. However, if the crushing operation is not required in the drive mode, the crushing unit coupler 93 can be opened, thereby disconnecting the crushing unit 40 from the drive system 90.

[0063] Figure 4A possible design for a motor generator 92 is shown. As shown, the motor generator 92 has a housing 110. The motor generator 92.1 is rotatably mounted within this housing 110. A circumferential toothed portion 92.2 is connected to the motor generator shaft 92.1, or the motor generator shaft 92.1 has such a circumferential toothed portion 92.2. At least one gear 92.3 meshes with this toothed portion 92.2. The gear 92.3 is also rotatably mounted within the housing 110, for example, via a bearing shaft 92.4 mounted at its opposite end. It can now be specified that at least one additional gear meshes with gear 92.3. This at least one additional gear or gear 92.3 meshes with a set of teeth 92.5 of the motor rotor 92.6 of the motor generator 92. For this purpose, the motor rotor 92.6 can be designed as, for example, a hollow shaft.

[0064] Therefore, the tooth 92.2, one or more gears 92.3, and optionally other gears form a gear reducer that can be used to reduce the speed between the motor generator shaft 92.1 and the motor rotor 92.6.

[0065] like Figure 4 As further illustrated, a motor rotor 92.6 may be specified to carry a rotor winding 92.7. This rotor winding 92.7 faces a motor stator 92.8, which is attached to a housing. The motor stator 92.8 includes a motor stator winding 92.9 electrically connected to a connector 94.

[0066] replace Figure 4 The setup shown also prevents speed reduction / increase between the motor-generator shaft 92.1 and the motor rotor 92.6. For this purpose, the motor-generator shaft 92.1 can be configured to be rotatably fixed to the motor-generator 92.6, for example, via a hub.

[0067] Figure 4 It is shown that the motor-generator shaft 92.1 can be (preferably directly) connected to the output of the motor coupler 91, and also (preferably directly) connected to the input of the crusher unit coupler 93. Therefore, the motor-generator shaft 92.1 can be a shaft passing through the motor-generator 92.

[0068] When the motor generator 92 operates as an electric motor, current is supplied to the motor stator 92.8 via connector 94. This creates a magnetic field that causes the motor rotor 92.6 to rotate. This rotational motion is transmitted indirectly to the motor generator shaft 92.1 via gear 92.3 and teeth 92.2, or directly to the motor generator shaft 92.1. When the motor coupler 91 is open, the motor generator 92, operating as an electric motor, can then drive the belt drive and thus the crusher unit 40 via the closed crusher unit coupler 93 and drive shaft 46.

[0069] If the motor-generator 92 operates in generator mode, the internal combustion engine 41 is started and the motor coupler 91 is closed. This causes the motor-generator shaft 92.1 to be driven by the internal combustion engine 41 and the motor rotor 92.6 to be set to rotational motion. Due to the effective electromagnetic field between the motor rotor 92.6 and the motor-generator 92.8, the current generated in the motor stator 92.8 is transmitted via the connector 94. In this operating state, the crusher unit coupler 93 can be open, or it is also conceivable that the crusher unit 40 operates when the crusher unit coupler is closed.

Claims

1. A material handling apparatus comprising an internal combustion engine (41) mechanically coupled to a crushing unit (40) via a drive system (90) to drive the crushing unit (40), the drive system (90) having a motor coupler (91) through which the internal combustion engine (41) can be selectively coupled to the drive system (90) to transmit drive power or discoupled from the drive system (90), wherein the drive system (90) includes a crushing unit coupler (93) through which the crushing unit (40) can transmit drive power or discouple from the drive system (90), wherein the drive system (90) includes a crushing unit coupler (93) through which the crushing unit (40) can transmit drive power. The coupling (93) is selectively coupled to or decoupled from the drive system (90), wherein the drive system includes a motor generator (92), the motor generator (92) including a motor rotor (92.6) and a motor stator (92.8), the motor generator (92) providing mechanical work for driving the crusher unit (40) in a first operating mode, and being driven by the internal combustion engine (41) to generate electrical power in a second operating mode, wherein the first operating mode is a motor operating mode and the second operating mode is a generator operating mode. Its features are, The motor rotor (92.6) of the motor generator (92) includes a motor generator shaft (92.1), which is rotatably and fixedly coupled to the output end of the motor coupler (91) and the input end of the crusher unit coupler (93).

2. The material handling apparatus according to claim 1, characterized in that, The motor generator shaft (92.1) is designed to pass through the motor generator (92), with one end of the motor generator shaft (92.1) connected to the motor coupler (91) and the other end of the motor generator shaft (92.1) connected to the crusher unit coupler (93).

3. The material handling apparatus 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 handling apparatus according to claim 1 or 2, characterized in that, The motor rotor (92.6) is rotatably coupled to the motor generator shaft (92.1).

5. The material handling apparatus according to claim 4, characterized in that, The motor generator shaft (92.1) has or is assigned teeth (92.2), at least one gear (92.3) meshes with the teeth (92.2), and the teeth (92.5) of the motor rotor (92.6) mesh directly with the gear (92.3) or mesh with the gear (92.3) by inserting at least one additional gear.

6. The material handling apparatus according to claim 1 or 2, characterized in that, The motor generator (92) has a motor rotor (92.6) designed as an internal rotor.

7. The material handling apparatus according to claim 1 or 2, characterized in that, The motor rotor (92.6) includes a rotor winding (92.7), and the motor stator (92.8) includes a stator winding (92.9), and the rotor winding (92.7) and the stator winding (92.9) have the same number of windings.

8. The material handling apparatus according to claim 1 or 2, 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 coupler (91) is opened to disconnect the internal combustion engine (41) from the drive system (90) and the crusher unit coupler (93) is closed to transmit torque from the motor generator shaft (92.1) to the crusher unit (40), and the motor generator (92) is supplied with electrical energy via an external power source or an energy storage device.

9. The material handling apparatus according to claim 1 or 2, characterized in that, In the second operating mode, where the motor generator (92) is driven by the internal combustion engine (41) to generate electrical power, the motor coupler (91) is closed to transmit torque from the internal combustion engine (41) to the motor rotor (92.6), and the crusher unit coupler (93) is disengaged, and the motor stator (92.8) is connected to the main power grid (96) of the material handling unit, such that the alternating current generated by the motor generator (92) is fed into the main power grid (96) and supplied to the load in the second operating mode.

10. The material handling apparatus according to claim 1 or 2, characterized in that, In the third operating mode, the motor generator (92) is driven by the internal combustion engine (41) to generate electrical power, the motor coupler (91) is closed to transmit torque from the internal combustion engine (41) to the motor rotor (92.6) and the crusher unit coupler (93) is engaged, the motor stator (92.8) is connected to the main power grid (96) of the material handling unit, so that the alternating current generated by the motor generator (92) is fed into the main power grid (96) and supplied to the load in the second operating mode.

11. The material handling apparatus according to claim 1 or 2, characterized in that, The base frame (15) is set on both sides of the material handling device that extends along the direction of travel. In the second operating mode, the power generated by the motor generator (92) is supplied to the traction motor of the base frame (15) to realize the travel operation of the material handling device.

12. The material handling apparatus according to claim 1 or 2, characterized in that, The traction motor of the base frame (15) is electrically connected to the main power grid (96) in the third operating mode, and the main power grid (96) is connected to an external power source (100).

13. The material handling apparatus according to claim 1, characterized in that, The material handling device is a crusher (10) used for crushing mineral materials.

14. The material handling apparatus according to claim 4, characterized in that, The motor rotor (92.6) is rotatably coupled to the motor generator shaft (92.1) via a transmission device.

15. The material handling apparatus according to claim 9, characterized in that, Alternating current generated by the motor generator (92) is supplied to one or more electric motors (97, 99) connected to the main power grid (96).

16. The material handling apparatus according to claim 10, characterized in that, Alternating current generated by the motor generator (92) is supplied to one or more electric motors (97, 99) connected to the main power grid (96).

Images