Drive for mobile material processing plant

Abstract

The invention relates to a drive for a mobile material processing plant, in particular for a rock crusher, having an internal combustion engine and an electric motor, which can be selectively coupled to or separated from a mechanical drive train on the drive side of the drive train by means of an internal combustion engine clutch and by means of an electric motor clutch, the drive train has an output side with at least one output by means of which at least one mechanical assembly, in particular a crusher, is driven. In order to be able to design a drive which is compact in design and can work reliably during operation with low component cost, the transfer case is provided with a main shaft, so that the internal combustion engine can be selectively coupled to or separated from the main shaft by means of an internal combustion engine clutch and the electric motor can be selectively coupled to or separated from the main shaft by means of an electric motor clutch. A plurality of driven parts are coupled to the main shaft, and a plurality of mechanical units, in particular at least a crusher, can be driven by the driven parts.

Description

Technical Field

[0001] The present invention relates to a drive for a mobile material processing device, in particular for a rock crusher, the drive comprising an internal combustion engine and an electric motor, wherein the internal combustion engine can be selectively coupled to or decoupled from a mechanical drive train on the drive side of the drive train by means of an internal combustion engine clutch and the electric motor can be selectively coupled to or decoupled from a mechanical drive train by means of an electric motor clutch, wherein the drive train has a driven side comprising at least one driven part, wherein at least one mechanical unit, in particular a crusher, is driven by means of one or more driven parts. Background Art

[0002] In the material processing plants according to the invention, an electric motor and an internal combustion engine are preferably used to alternately drive a mechanical assembly, in particular a crusher.

[0003] With a switchable clutch (internal combustion engine clutch or electric motor clutch) connected in between, the internal combustion engine drives the mechanical drive train in internal combustion engine operation and the electric motor drives the mechanical drive train in electric motor operation. These switching clutches can operate according to all common clutch methods. Claw, friction or form-locking connection methods, clutches according to the Fortinger principle ( -Prinzip) or hydraulic power transmission or a combination of said methods.

[0004] At least one hydraulic pump is preferably also driven via the mechanical drive train, and the hydraulic pump drives one or more mechanical units.

[0005] More preferably, the mechanical drive train can drive, for example, a crusher, a ventilator, a generator, a travel drive, and / or a hydraulic drive, in particular a hydraulic motor, or a hydraulic cylinder. A hydraulic motor can also drive larger loads, such as drives for conveyor belts, troughs, and the like. For a highly efficient drive, the mechanical drive train also drives at least one generator at the output (preferably as an alternative to or in addition to at least one hydraulic pump), which provides electrical energy for powerful auxiliary loads such as electric motors, conveyor belts, troughs, screens, pump drives, and the like. Using electric drives for auxiliary loads instead of hydraulic drives significantly increases mechanical efficiency.

[0006] US 11,480,100 B2 discloses a material processing device having a drive train for driving a crusher. In the drive train, an internal combustion engine can be selectively coupled to a transmission of the drive train via a freewheel clutch or an electric motor. Summary of the Invention

[0007] The object of the present invention is to provide a drive for a material processing plant of the type mentioned at the outset, with which a drive train which is compact and operates reliably during operation can be designed with a low outlay on components.

[0008] This object is achieved in that the transfer case is provided with a main shaft, so that the internal combustion engine can be selectively coupled to or decoupled from the main shaft by means of an internal combustion engine clutch and the electric motor can be selectively coupled to or decoupled from the main shaft by means of an electric motor clutch, and a plurality of driven parts are coupled to the main shaft, by means of which a plurality of mechanical units, in particular at least a crusher, can be driven.

[0009] The internal combustion engine and electric motor can thus transmit their drive power to the main shaft. This allows the driven part of the mechanical assembly to be coupled and to draw the required mechanical drive energy. This integrated main shaft thus enables a conceivably simple and compact transfer case design. This also requires fewer moving transmission components, thus reducing the transfer case's susceptibility to wear. Furthermore, this type of transfer case is ideally suited for the high loads required here, as the main shaft, as a heavily loaded component, can be designed to be correspondingly robust. The dimensions of the driven part can be optimized to drive the corresponding mechanical assembly.

[0010] According to a preferred embodiment of the invention, at least one driven part has a clutch, and the clutch can be used to selectively couple or decouple the at least one mechanical unit to the main shaft. Thus, the mechanical unit can be coupled to the main shaft only when required. If the mechanical unit is not required, it can be decoupled and thus the drive is not loaded.

[0011] In order to be able to operate the mechanical units coupled to the outputs individually in a respectively suitable operating range, it can be provided that at least one output has a speed converter, by means of which the speed of the main shaft can be accelerated or decelerated to a speed of the output that differs from the main shaft speed.

[0012] In this case, a particularly preferred design of the present invention may be that the speed conversion device of the driven part has a continuously circulating belt drive, the belt drive is reversed around two reversing rollers with different diameters to preset an acceleration ratio or a reduction ratio, and the mechanical unit driven by the belt drive is preferably a crusher.

[0013] According to a possible variant of the present invention, the speed conversion device can be a transmission or include a transmission, wherein the mechanical unit driven by the main shaft via the transmission is preferably a drive for the chassis, a hydraulic pump, a ventilator, or a generator. The transmission can be designed specifically for the mechanical unit to ensure reliable load transmission. Preferably, at least one transmission of the output is at least partially integrated into the transfer case. This creates a component that can be operated in one piece and is designed to be user-friendly both for installation and maintenance.

[0014] A preferred embodiment of the present invention can be designed in which one of the output components drives a hydraulic pump, and the hydraulic pump is coupled to at least one clutch, in particular a travel drive clutch, via a hydraulic line, so that the clutch can be switched between a closed position and an open position by means of the hydraulic pressure generated by the hydraulic pump. In this document, a "closed clutch" refers to an operating position in which the clutch is engaged, i.e., a coupling exists between the main shaft and the coupled mechanical unit. When the clutch is disengaged, the clutch is disengaged. Thus, there is no coupling between the main shaft and the coupled mechanical unit. Preferably, the hydraulic pump is coupled to the main shaft in both internal combustion engine operation and electric motor operation. In this case, hydraulic pressure can be generated in both operating states to couple or decouple the coupled mechanical unit. Thus, for example, the coupled travel drive and chassis can be constantly activated.

[0015] The material processing apparatus according to the present invention can be designed so that at least two clutches are operatively connected to one another, allowing them to be opened and / or closed together. This embodiment is suitable for reducing component costs when using two mechanical units on the output side, which are to be activated or deactivated during internal combustion engine operation and electric motor operation. The clutches can be designed for the respective coupled mechanical units based on their specific drive loads. Naturally, it is also possible to couple at least two mechanical units to a single clutch, in which case the clutch must be designed accordingly for the requirements of both mechanical units.

[0016] Another embodiment of the present invention provides for the internal combustion engine and / or the electric motor to be coupled to the spindle via a speed matching device. Preferably, the speed matching device is used to change the speed of the electric motor and / or the internal combustion engine toward the spindle, so that the spindle operates at the same speed, or at the same speed with a fluctuation range of ±10%, in both internal combustion engine and electric motor operation. The speed matching device ensures that the spindle operates at the same or approximately the same speed in both operating states, regardless of the selected drive mode (internal combustion engine operation or electric motor operation). More preferably, only the electric motor or only the internal combustion engine is coupled to the spindle via the speed matching device, which reduces efficiency and component costs.

[0017] In this case, it is particularly preferably provided that the electric motor is coupled to the drive train with the interposition of an electric motor accelerator, wherein it is preferably provided that the electric motor accelerator reduces the rotational speed to a lower value in the direction of the drive train.

[0018] For further energy optimization, provision can be made for the generator to be driven by the output during internal combustion engine operation, such that the generator supplies power to at least one electrical load, in particular an electric motor, during internal combustion engine operation, the generator is disconnected from the main shaft by at least one generator clutch during electric motor operation, and the at least one electrical load, in particular the electric motor, is supplied with power by the power supply during electric motor operation. This is based on the recognition that the electrical loads can be optimally supplied with power via an external primary power grid, to which the electric motor is connected during electric motor operation.

[0019] Conceivable variations of the present invention may include an electric motor clutch and / or an internal combustion engine clutch being operatively connected to at least one clutch on the output part, such that both clutches are open or closed together, or one clutch is open while the other is closed. Thus, when changing between internal combustion engine and electric motor operating states, the mechanical units coupled to the output part can be simultaneously activated or deactivated, depending on whether the mechanical units are required or not in the respective operating states. For example, when transitioning from internal combustion engine to electric motor operation, the electric motor clutch can be closed and a previously coupled generator and / or a previously coupled fan for cooling the internal combustion engine on the output side can be simultaneously disconnected. This measure significantly reduces wiring complexity.

[0020] The aforementioned operative connection between the two clutches can be realized in a simple manner by combining the two clutches to form a mechanical switching clutch.

[0021] In order to improve operational reliability and avoid erroneous operation, it can be provided that the internal combustion engine clutch and the electric motor clutch are effectively connected to each other by means of a switching device, so that in the internal combustion engine operating state, the switching device couples the internal combustion engine to the drive train by means of the internal combustion engine clutch and decouples the electric motor from the drive train, and in the electric motor operating state, the switching device decouples the internal combustion engine from the drive train and couples the electric motor to the drive train by means of the electric motor clutch.

[0022] For example, the switching device can be designed so that, in the event of a fault in the electric motor, it automatically closes the internal combustion engine clutch and thereby couples the internal combustion engine to the drivetrain. In other words, a default switching position can be preset via the switching device so that, if a fault occurs in one operating state, the system switches to another. This eliminates user errors and significantly simplifies the process for switching operating modes. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be described in detail below based on the embodiments shown in the accompanying drawings.

[0024] Figure 1 A schematic diagram shows a side view of a material processing plant 1 with a crusher 10, and

[0025] Figure 2 A schematic block diagram of a material processing apparatus is shown. DETAILED DESCRIPTION

[0026] Figure 1 The material processing plant 1 is shown in the form of a crushing plant with a material processing unit in the form of a crusher 10. The material processing plant 1 is designed as a mobile material processing plant 1 and therefore has a chassis 1.5. However, it is also conceivable that the material processing plant 1 is a stationary material processing plant 1.

[0027] The material processing device 1 has a chassis 1.1, which carries the machine components or at least a part of the machine components. The chassis 1.1 can preferably have a suspension 1.2 at its rear end. The material input area is formed in the area of ​​the suspension 1.2.

[0028] The material input area may include a delivery hopper 2 and a material input device 9 .

[0029] The delivery funnel 2 can be formed at least partially by a funnel wall 2 . 1 extending in the direction of the longitudinal extension of the material processing plant 1 and a rear wall 2 . 2 extending transversely thereto. The delivery funnel 2 leads to a material conveying device 9 .

[0030] As shown in the present embodiment, the material feed device 9 comprises a conveying trough which can be driven by an oscillating drive. Via the delivery hopper 2 , material to be comminuted can be filled into the material processing plant 1 and delivered to the conveying trough, for example by means of a wheel loader.

[0031] The material to be crushed arrives from the conveyor trough in the area of ​​the screening unit 3. The screening unit 3 can also be called a pre-screening assembly. At least one screening plate 3.1, 3.2 is arranged in the area of ​​the screening unit 3. In this embodiment, two screening plates 3.1, 3.2 are used.

[0032] At the upper screening deck 3.1, a portion of the material to be crushed is screened out. This portion already has a sufficient particle size and does not need to be crushed again in the material processing device 1. In this regard, the screened portion can be guided through the crusher 10 in the bypass channel 3.5.

[0033] When a second screening deck 3.2 is used in the screening unit 3, a further fine fraction can be screened from the fraction that falls below the screening deck 3.1. The fine fraction can be guided below the screening deck 3.2 to a side discharge conveyor 3.4. The fine fraction is guided away by the side discharge conveyor 3.4 and conveyed to a stockpile 7.2 arranged on the side of the machine.

[0034] like Figure 1As shown, screening unit 3 can be an oscillating screener with a screening drive 3.3. Screen drive 3.3 causes screening deck 3.1 and / or screening deck 3.2 to oscillate. Due to the inclined arrangement of screening decks 3.1, 3.2 and the combination of the oscillating motion, the material is transported over screening decks 3.1, 3.2 toward crusher 10 or bypass channel 3.5.

[0035] The material to be crushed from the screening plate 3.1 is directed to the crusher 10, such as Figure 1 The ground can be seen in it.

[0036] The crusher 10 can be configured as a rotary impact crusher or a jaw crusher, for example. Figure 1 In the case of a rotary impact crusher, the rotary impact crusher has, for example, an impact rotor 11 which is driven by an internal combustion engine 12. Figure 1 The rotation axis 17 of the middle impact rotor 11 extends horizontally in the direction of the depth of the drawing. The impact rotor 11 is installed in the crushing space 16.1.

[0037] If a jaw crusher is used, two crusher jaws face each other and enclose a converging crushing shaft between them, which leads to a crushing gap. At least one of the crusher jaws can be driven by an internal combustion engine 12 to crush the crushed material filled in the converging crushing gap.

[0038] The impact rotor 11 can be equipped, for example, with impact bars 11.2 on its outer circumference. Wall elements, preferably in the form of impact wings 20, can be arranged opposite the impact rotor 11. As the impact rotor 11 rotates, the material to be comminuted is flung outward by the impact bars 11.2. Here, the material strikes the impact wings 20 and is comminuted due to the high kinetic energy. If the material to be comminuted has a sufficient particle size to allow the particles to pass through the crushing gap 15 between the impact wings 20 and the radially outer ends of the impact bars 11.2, the crushed material leaves the crusher 10 via a crusher outlet 16.

[0039] It is conceivable that in the area of ​​the crusher outlet 16, the comminuted material from the crusher 10 is collected with the material from the bypass channel 3.5 and brought to the belt conveyor 1.3. The belt conveyor 1.3 can be used to guide the material out of the working area of ​​the crusher 10.

[0040] As shown in the accompanying drawings, the belt conveyor 1.3 can comprise a continuously circulating conveyor belt having a tensioned side 1.6 and a slack side 1.7. The tensioned side 1.6 serves to collect and transport the crushed material, which falls from the crusher outlet 16 of the crusher 10. The conveyor belt can be deflected at the belt ends between the tensioned side 1.6 and the slack side 1.7 by means of deflection rollers 1.4. Guides, in particular support rollers, can be provided in the area between the deflection rollers 1.4 to change the conveying direction of the conveyor belt, thereby providing a specific shape and / or supporting the conveyor belt.

[0041] The belt conveyor 1.3 has a belt drive, by means of which the belt conveyor 1.3 can be driven. The belt drive can preferably be arranged at the discharge end 1.9 or in the region of the discharge end 1.9 of the belt conveyor 1.3.

[0042] The belt conveyor 1.3 can be connected to a control device, for example, by means of a belt drive via a control line.

[0043] One or more further belt conveyors 6 and / or return conveyors 8 can be used, which are in principle of the same construction as the belt conveyor 1.3. In this respect, reference is made to the above-described embodiments.

[0044] In the area between the delivery end and the discharge end 1.9, a magnet 1.8, in particular an electromagnet, can be arranged above the tensioning edge 1.6. With the help of the magnet 1.8, iron parts can be removed from the crushed material and moved out of the conveying area of ​​the belt conveyor 1.3.

[0045] A fine screening device 5 can be arranged downstream of the belt conveyor 1.3 in the transport direction. The fine screening device 5 comprises a screening housing 5.1 in which at least one screening plate 5.2 is mounted. A housing lower portion 5.3 is formed below the screening plate 5.2 and serves as a collection space for the material screened out by the screening plate 5.2.

[0046] The housing lower part 5.3 provides a spatial connection to a further belt conveyor 6 via an opening. The further belt conveyor 6 forms its delivery area 6.1, wherein the sieved material is guided in the delivery area 6.1 to the tensioning edge of the further belt conveyor 6. The further belt conveyor 6 conveys the sieved material toward its discharge end 6.2. From there, the sieved material reaches a stockpile 7.1.

[0047] The material not screened out of the screening plate 5.2 of the fine screening device 5 is transported from the screening plate 5.2 to the branch belt 5.4. The branch belt 5.4 can also be constructed as a belt conveyor, so reference is made to the embodiment described above regarding the belt conveyor 1.3. Figure 1 In the drawing, the transport direction of the branch belt 5.4 extends in the direction of the depth of the drawing.

[0048] At its discharge end, the feeder belt 5.4 transfers the unscreened material, also known as oversized particles, to the delivery area 8.1 of the return conveyor 8. The return conveyor 8, which can be designed as a belt conveyor, transports the oversized particles toward the delivery hopper 2. At its discharge end 8.2, the return conveyor 8 transfers the oversized particles into the material flow, particularly into the material inlet area. The oversized particles can then be fed back to the crusher 10 and crushed there to the desired particle size.

[0049] Figure 2 Shown according to Figure 1 Schematic block diagram of a material processing device 1. As shown in the schematic diagram, the material processing device 1 has an internal combustion engine 12. The internal combustion engine 12 can be selectively coupled to a drive train 14 or decoupled from the drive train by means of an internal combustion engine clutch 13.

[0050] Furthermore, the material processing machine 1 also has an electric motor 19. The electric motor 19 can be selectively coupled to or decoupled from the drive train 14 via an electric motor clutch 19.2. The internal combustion engine clutch 13 and the electric motor clutch 19.2 are designed as shiftable clutches, for example, shiftable dog clutches. These clutches are preferably hydraulically actuated to adjust them between a closed position and an open position.

[0051] The electric motor 19 can be releasably coupled to the external power source SV directly or indirectly via an internal power source 41 of the material processing apparatus 1 .

[0052] The internal combustion engine clutch 13 and the electric motor clutch 19 . 2 can be coupled to a shifting device 40 , so that the internal combustion engine clutch and the electric motor clutch are operatively connected to one another.

[0053] Preferably, the switching device 40 includes a hydraulic system including a pressure generator 18. The hydraulic fluid in the hydraulic system can be pressurized by means of the pressure generator 18. The pressure generator 18 can be, for example, a hydraulic pump, which is supplied with current via an internal power supply 41. The internal power supply 41 can be the onboard electrical system of the material processing system 1.

[0054] The pressure generator 18 is coupled to the internal combustion engine clutch 13 and the electric motor clutch 19.2 via hydraulic lines 42, 43, as shown in FIG. Figure 2 This is shown by the dashed line. Here, the two clutches 13 and 19.2 are hydraulically connected in parallel. However, it is also conceivable that the two clutches 13 and 19.2 are connected in series. For example, a switching valve can be placed upstream of the clutches 13 and 19.2 to achieve the series connection. Thus, the internal combustion engine clutch 13 and the electric motor clutch 19.2 can be connected simultaneously using the pressure generator 18.

[0055] The internal combustion engine clutch 13 may be a clutch which couples the internal combustion engine 12 to the drive train 14 in a first switching state (clutch closed position) and decouples the internal combustion engine from the drive train 14 in a second switching state (clutch open position).

[0056] Preferably, when a switching pressure generated by the pressure generator 18 is present in the hydraulic line 42, the internal combustion engine clutch 13 is brought into the second switching state (internal combustion engine disengaged). If the pressure in the hydraulic line 42 drops below the switching pressure, the internal combustion engine clutch 13 automatically switches to the first switching state. For this purpose, it can be provided, for example, that the internal combustion engine clutch 13 is a spring-preloaded clutch that overcomes the spring preload when transitioning from the first switching state to the second switching state. Preferably, when the device is not connected to an external power source (e.g., a coast power supply), the internal combustion engine clutch 13 automatically switches to the first switching state, so that the internal combustion engine is coupled to the mechanical drive train in "burner mode." Switching to electric mode is therefore only possible when a coast power connection is present.

[0057] The electric motor clutch 19 . 2 can be a clutch which couples the electric motor to the drive train 14 in a first switching state and decouples the electric motor from the drive train 14 in a second switching state.

[0058] Preferably, when a switching pressure generated by the pressure generator 18 is present in the hydraulic line 43, the electric motor clutch 19.2 is brought into the first switching state (electric motor coupled). If the pressure in the hydraulic line 42 drops below the switching pressure, the electric motor clutch 19 automatically switches to the second switching state (electric motor disengaged). For this purpose, it can be provided, for example, that the electric motor clutch 19 is a spring-preloaded clutch that overcomes the preload of the spring when transitioning from the second switching state to the first switching state.

[0059] The aforementioned switching pressure thus forms a switching signal, by means of which the electric motor clutch 19 . 1 and / or the internal combustion engine clutch 13 can be adjusted between their two switching states.

[0060] Figure 2 It is also shown that the electric motor 19 can be indirectly coupled to the drive train 14 via a speed matching device 19.1. Additionally or alternatively, it can also be provided that the internal combustion engine 12 is also coupled via Figure 2 The speed matching device (not shown) is indirectly coupled to the drive train 14. The output speed of the internal combustion engine 12 or the electric motor 19 can be increased or decreased by means of one or more speed matching devices 19.1. Preferably, the speeds of the internal combustion engine and the electric motor are equal after their acceleration or deceleration.

[0061] Figure 2It is also shown that the drive train 14 may have a transfer case 30 including a main shaft 31. The internal combustion engine 12 and the electric motor 19 are coupled to the main shaft 31, as shown.

[0062] On the output side, the main shaft 31 is coupled to at least one mechanical unit for mechanically driving the mechanical unit. For example, the crusher 10, at least one drive 33.2 of the chassis 1.5, at least one hydraulic pump 34.2, at least one fan 35.2 for cooling the internal combustion engine 12, and / or at least one generator 36.2 are conceivable as mechanical units.

[0063] The at least one mechanical unit can be coupled, for example, directly to the main shaft 31. Alternatively or additionally, it is also conceivable that the at least one mechanical unit is coupled indirectly to the main shaft 31 via an intermediate clutch and / or a speed accelerator or speed reducer.

[0064] Figure 2 It is shown that the crusher 10 is preferably coupled to the main shaft 31 via a switchable crusher clutch 32. The crusher clutch 32 enables the crushing unit 10 to be selectively coupled to the main shaft 31 or decoupled therefrom.

[0065] It is also conceivable that the crushing unit 10 is coupled to the main shaft 31 with an intermediate speed accelerator or speed reducer. In this case, for example, a continuously circulating belt drive can be used, which is guided around two deflection rollers arranged at a distance from one another. The deflection rollers have different diameters in order to predetermine the acceleration or reduction ratio.

[0066] Figure 2 It is also shown that the travel drive 33.2 is indirectly coupled to the main shaft 31 with the interposition of the travel drive clutch 33.1 and the travel drive accelerator 33. Alternatively or additionally, provision can also be made for the hydraulic pump 34.2 to be indirectly coupled to the main shaft 32 with the interposition of the hydraulic pump clutch 34.1 and the hydraulic pump accelerator 34. It is conceivable that a rigid connection between the hydraulic pump 34.2 and the main shaft 31 could be provided instead of the hydraulic clutch 34.1. This is recommended when the hydraulic pump 34.2 is to be used in both internal combustion engine and electric motor operation.

[0067] Figure 2 It is also shown that the fan 35 . 2 is indirectly coupled to the main shaft 31 via the fan clutch 35 . 1 and the generator 36 . 2 via the generator clutch 36 . 1 and / or via a fan accelerator or a generator accelerator.

[0068] from Figure 2As can be seen in FIG, the electric motor clutch 19.2 and the generator clutch 36.1 are coupled to each other (coupling 39). Coupling 39 can preferably be a mechanical coupling 39 or a hydraulic coupling 39. In particular, the electric motor clutch 19.2 and the generator clutch 36.1 can be combined into a switching clutch by means of coupling 39.

[0069] When the electric motor clutch 19 . 2 is closed and the electric motor 19 is coupled to the main shaft 31 , the coupling 39 opens the generator clutch 36 . 1 and decouples the generator 36 . 2 from the main shaft 31 .

[0070] If the electric motor clutch 19 . 2 is switched so that the electric motor 19 . 2 is decoupled from the main shaft 31 , the clutch 39 causes the generator clutch 36 . 1 to close and the generator 36 . 2 to be coupled to the main shaft 31 .

[0071] Additionally or alternatively, such a coupling 39 can also be provided between the electric motor coupling 19 . 2 and the fan clutch 35 . 1 or another clutch on the output of the main shaft 31 .

[0072] It is also conceivable that the coupling 39 may also be present indirectly. Figure 2 . Here, the fan clutch 35.1 and the generator clutch 36.1 are shown to be mechanically coupled to each other via a coupling 37, so that both clutches 35.1, 36.1 are opened or closed together. Of course, it is also conceivable to use only one clutch 35.1, 36.1 instead of two clutches 35.1 or 36.1 to couple the fan 35.2 and the generator 36.2 to or decouple them from the main shaft 32.

[0073] It is preferably provided that when a switching signal is applied, such as a switching pressure in the hydraulic system (hydraulic lines 42, 43), the electric motor clutch 19.2 is closed to provide a connection between the electric motor 19 and the main shaft 31. The coupling 39 then preferably opens (or closes) another clutch, in particular the generator clutch 36.1 and / or the ventilator clutch 35.1. If the switching signal is no longer present or the switching signal is changed (hydraulic pressure changes), the electric motor clutch 19.2 is switched to the open state and the electric motor 19 is separated from the main shaft 31. Then, the other clutch, in particular the generator clutch 36.1 and / or the ventilator clutch 35.1, is switched via the coupling 39. As Figure 2 As shown, the two clutches 36.1, 35.1 are now closed and the generator 36.2 and the fan 35.2 are coupled to the main shaft 31. In other words, the generator 36.2 and / or the fan 35.2 are coupled in when the electric motor 19 is decoupled from the drive train.

[0074] When the electric motor 19 is decoupled, the internal combustion engine 12 is coupled and the device is in the internal combustion engine operating state.

[0075] In the present exemplary embodiment, the pressure generator 18 is indirectly coupled to the external power source SV via the internal power source 41 .

[0076] However, it is conceivable and preferred to couple the pressure generator 18 to an external power source SV, to which the electric motor 19 is also connected. This ensures that the transition to the electric motor operating state is possible only when the connection to the external power source SV is established. If the connection to the external power source SV is not established, the system preferably automatically returns to the internal combustion engine operating state.

[0077] The following is based on Figure 2 The function of the material processing device 1 is described in detail. If the internal combustion engine 12 is coupled to the main shaft 31 via the internal combustion engine clutch 13 (internal combustion engine clutch 13 is closed), the electric motor 19 is disconnected from the main shaft 31 and the electric motor clutch 19.2 is open. The material processing device 1 is in the internal combustion engine operating state.

[0078] In the internal combustion engine operating state, the internal combustion engine 12 can drive at least part of the driven components via the main shaft 31 to provide mechanical drive power to the mechanical assembly, thereby driving the internal combustion engine 12, the crusher 10, the hydraulic pump 34.2, the fan 35.2 and the generator 36.2.

[0079] If the material processing device 1 moves in driving mode, the driving drive 33.2 is activated. For this purpose, the driving drive can close the clutch 33.1. The internal combustion engine 12 then drives the driving drive 33.2.

[0080] like Figure 2 As shown, preferably the travel drive clutch 33.1 can be a hydraulic clutch. At this moment, the travel drive clutch 33.1 can be supplied with hydraulic fluid via a hydraulic line 38 by a hydraulic pump 34.2 to switch it between its open and its closed clutch positions.

[0081] Once the material processing device 1 has been moved into the desired position, the travel drive clutch 33 . 1 is opened again and the travel drive 33 . 2 is disconnected from the spindle 31 .

[0082] During the operation of the internal combustion engine, when the generator clutch 36 . 1 is closed, the generator 36 . 2 generates current to supply electrical components or mechanical units of the material processing system 1 .

[0083] For example, one or more electric motors can be powered by a generator 36.2. These electric motors can be, for example, motors that drive at least one belt conveyor 1.3, a screening drive 3.3, a side discharge belt 3.4, a fine screening device 5, a feeder belt 5.4, a further belt conveyor 6, a return conveyor 8, and / or a material feed 9. It is also conceivable that the magnet 1.8 is designed as an electromagnet and powered by the generator 36.2.

[0084] For this purpose, the hydraulic pump 34.2 can also be used to supply hydraulic fluid to hydraulic components of the material processing plant 1. For example, provision can be made to supply hydraulic fluid to at least one hydraulic motor and / or at least one hydraulic valve by means of the hydraulic pump 34.2.

[0085] If the switch is now made from internal combustion engine operation to electric motor operation, internal combustion engine 12 is decoupled from main shaft 31 by means of internal combustion engine clutch 13. Electric motor 19 is coupled to main shaft 31 by means of electric motor clutch 19.2. For this purpose, it can be provided, for example (as described above), that a hydraulic pressure is built up in hydraulic lines 42 and 43 using pressure generator 18 as a switching signal. The hydraulic pressure causes internal combustion engine clutch 13 and electric motor clutch 19.2 to be adjusted.

[0086] Therefore, now only the electric motor 19 is coupled to the spindle 31 on the drive side. The electric motor 19 now drives the at least one mechanical unit mentioned above via the spindle, wherein the drive takes place in the same manner as in the operating state of the internal combustion engine.

[0087] Therefore, only the differences in the operating states of the electric motor will be discussed below, and the remaining parts may refer to the aforementioned embodiments.

[0088] For example, the coupling of the generator 36.2 and / or the fan 35.2 to the main shaft 31 can now be eliminated due to the coupling 39 between the electric motor clutch 19.2 and the generator clutch 36.1 and / or the fan clutch 35.1. In fact, these components are not required during electric motor operation and do not need to be coupled together. In other words, it is provided that at least some of the mechanical components that are powered by the generator 36.2 during internal combustion engine operation are now powered by the external power supply SV, which also supplies power to the electric motor 19.

[0089] The fan 35 . 2 for cooling the internal combustion engine 12 is likewise not required in the electric motor operating state and can therefore be separated from the main shaft 31 .

[0090] The pressure generator 18 that switches the internal combustion engine clutch 13 and the electric motor clutch 19.2 can be implemented as a combination pump. Here, the combination pump can have a second pump stage that is integrated into the cooling circuit. The cooling circuit can be used to supply coolant to the cooling circuit of the electric motor 19. This provides cooling for the electric motor 19 during electric motor operation. Of course, it is also conceivable to separate these two functions. Thus, two separate pump units can be used: a first pump unit (pressure generator 18) for supplying the clutches 13 and 19.2, and a second pump unit for the cooling circuit.

[0091] As mentioned above, the internal combustion engine clutch 13 and the electric motor clutch 19.2 are preferably designed as dog clutches. Due to their function, the clutches 13, 19.2 can only be switched when stationary.

[0092] In this unfavorable position, the internal combustion engine clutch 13 and / or the electric motor clutch 19.2 cannot be engaged. Therefore, in order to engage the internal combustion engine clutch 13, provision can be made to rotate the motor shaft of the internal combustion engine 12 a certain distance in the internal combustion engine operating state by means of the starter of the internal combustion engine 12 until the internal combustion engine clutch 13 engages. Alternatively or additionally, provision can also be made to rotate the output shaft of the electric motor 19 in the electric motor operating state in order to engage the electric motor clutch 19.2.

Claims

1. A drive for a mobile material processing device (1), comprising an internal combustion engine (12) and an electric motor (19), wherein: The internal combustion engine (12) can be selectively coupled to or decoupled from a mechanical transmission (14) on the drive side of the transmission by means of an internal combustion engine clutch (13) and the electric motor (19) can be selectively coupled to or decoupled from the mechanical transmission (14) by means of an electric motor clutch (19.2), wherein the transmission (14) has a driven side including at least one driven part, wherein at least one mechanical unit is driven by means of one or more driven parts, and characterized in that the transfer case (30) is provided with a main shaft (31), so that the internal combustion engine (12) can be selectively coupled to or decoupled from the main shaft (31) by means of the internal combustion engine clutch (13) and the electric motor (19) can be selectively coupled to or decoupled from the main shaft (31) by means of the electric motor clutch (19.2), and a plurality of driven parts are coupled to the main shaft (31), by means of which a plurality of mechanical units can be driven.

2. The driver according to claim 1, wherein: At least one output part has a clutch, and by means of the clutch the at least one mechanical unit can be selectively coupled to the main shaft (31) or decoupled therefrom.

3. The driver according to claim 1 or 2, characterized in that: At least one output has a rotational speed converter, by means of which the rotational speed of the main shaft (31) can be accelerated or decelerated to an output rotational speed that is different from the rotational speed of the main shaft (31).

4. The driver according to claim 3, characterized in that The speed conversion device of the driven part has a continuously circulating belt drive which is deflected around two deflection rollers with different diameters to preset an acceleration or reduction ratio, and the mechanical unit driven by the belt drive is preferably a crusher.

5. The driver according to claim 3, characterized in that The speed conversion device is a transmission or has a transmission.

6. The driver according to claim 1 or 2, characterized in that: One of the driven parts drives a hydraulic pump (34.2) and the hydraulic pump (34.2) is coupled to at least one clutch via a hydraulic line (38), so that the clutch can be switched between a closed position and an open position by means of the hydraulic pressure generated by the hydraulic pump (34.2).

7. The driver according to claim 2, characterized in that At least two clutches are operatively connected to one another such that they are jointly opened and / or closed.

8. The driver according to claim 1 or 2, characterized in that: The internal combustion engine (12) and / or the electric motor (19) is coupled to the main shaft (31) by means of a speed matching device (19.2).

9. The driver according to claim 8, characterized in that The electric motor (19) is coupled to the drive train (14) with an interposed electric motor accelerator (19.1).

10. The driver according to claim 1 or 2, characterized in that: In the internal combustion engine operating state, a generator (36.2) is driven by means of a driven part, so that the generator (36.2) supplies power to at least one electric load in the internal combustion engine operating state, and in the electric motor operating state, the generator (36.2) is separated from the main shaft (31) by means of at least one generator clutch (36.1), and the at least one electric load is supplied with power via a power supply (SV) in the electric motor operating state.

11. The driver according to claim 1 or 2, characterized in that: The electric motor clutch (19.2) and / or the internal combustion engine clutch (13) are effectively connected to at least one clutch on the driven part, so that the two clutches are jointly opened or jointly closed, or one clutch is opened and the other clutch is closed.

12. The driver according to claim 11, characterized in that The electric motor clutch (19.2) or the internal combustion engine clutch (13) forms a switching clutch with the at least one clutch.

13. The driver according to claim 11, characterized in that The electric motor clutch (19.2) and the generator clutch (36.1) and / or the electric motor clutch (19.2) and the fan (35.2) are operatively connected to one another.

14. The driver according to claim 1 or 2, characterized in that: The internal combustion engine clutch (13) and the electric motor clutch (19.2) are effectively connected to each other by means of a switching device (40), so that the switching device (40) couples the internal combustion engine (12) to the drive train (14) by means of the internal combustion engine clutch (13) in the internal combustion engine operating state and decouples the electric motor (12) from the drive train (14), and the switching device (40) decouples the internal combustion engine (12) from the drive train (14) in the electric motor operating state and couples the electric motor (19) to the drive train (14) by means of the electric motor clutch (19.2).

15. The driver according to claim 1 or 2, characterized in that: In the internal combustion engine operating state, the motor shaft of the internal combustion engine (12) is rotated a certain distance by means of the starter of the internal combustion engine (12) until the internal combustion engine clutch (13) is engaged, and / or in the electric motor operating state, the driven shaft of the electric motor (19) is rotated so that the electric motor clutch (19.2) can be engaged.

16. The driver according to claim 1 or 2, characterized in that: The internal combustion engine clutch (13) and / or the electric motor clutch (19.2) are spring-preloaded clutches which overcome the preload of the spring when changing from a first switching state to a second switching state.

17. The driver according to claim 1, wherein: The mobile material processing equipment is a rock crusher.

18. The driver according to claim 1, wherein: The crusher (10) is driven by means of one or more driven parts.

19. The driver according to claim 1, wherein A plurality of outputs are coupled to the main shaft (31), by means of which at least the crusher (10) can be driven.

20. The driver according to claim 5, characterized in that The mechanical unit driven by the main shaft (31) via the transmission is a travel drive (33.2) for the travel gear (1.5) or a hydraulic pump (34.2) or a fan (35.2) or a generator (36.2).

21. The driver according to claim 6, characterized in that The hydraulic pump (34.2) is coupled to the travel drive clutch (33.1) via a hydraulic line (38).

22. The driver according to claim 8, wherein The speed matching device (19.1) changes the speed of the electric motor (19) and / or the internal combustion engine (12) in the direction of the main shaft (31), so that the main shaft (31) runs at the same speed or at the same speed with a fluctuation range of ±10% in the internal combustion engine operating state and in the electric motor operating state.

23. The driver according to claim 8, wherein The speed matching device (19.1) changes the speed of the electric motor (19) and / or the internal combustion engine (12) in the direction of the main shaft (31), so that the main shaft (31) runs at the same speed or at the same speed with a fluctuation range of ±5% in the internal combustion engine operating state and in the electric motor operating state.

24. The driver according to claim 9, characterized in that The electric motor accelerator (19.1) reduces the rotational speed to a lower value in the direction of the drive train (14).

25. The driver according to claim 10, wherein: At least one electric load is an electric motor (36.3, 36.4).

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