• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A drive arrangement for an agricultural implement comprises a drive motor (32) and an electronic control unit (70) to instruct the actuator (76) to open the drive train if a measured torque transmitted by the drive train exceeds a threshold value, which is from a maximum of the overload clutch (112) transmittable torque depends. The control unit (70) is configured to automatically detect the maximum torque that can be transmitted by the overload clutch (112) based on a sensor-detected difference between the input and output speeds of the overload clutch (112) and the measured torque transmitted by the drive train.
    公开号:BE1027694B1
    申请号:E20200099
    申请日:2020-09-04
    公开日:2021-08-20
    发明作者:Matthias Stein；Stefan Bohrer
    申请人:Deere & Co；
    IPC主号:
    专利说明:

    The invention relates to a drive arrangement for an agricultural implement, comprising: a drive motor, a drive train inserted between the drive motor and one or more driven elements of the implement, a drive train inserted into the drive train, A device that can be switched off by means of a power-operated actuator, a mechanical overload clutch inserted into the drive train, and an electronic control unit that is connected to the power-operated actuator and configured to instruct the actuator to open the drive train if a measured torque transmitted by the drive train reaches a threshold value exceeds that depends on a maximum torque that can be transmitted by the overload clutch, as well as a combination of a carrier vehicle with a drive motor and e A working device with such a drive arrangement that can be detachably attached to it.
    State of the art Agricultural machines in many cases comprise drivable implements that interact with the crop or the soil and must be protected against overload in order to prevent overloading (e.g.
    Clogging of a header or impact of a tillage implement against a stone) to avoid damage to the implement or the drive train.
    As an overload protection device, mechanical overload clutches are usually used, which are inserted into the drive train of the working device, for example as a ratchet clutch (see Sect.
    DE 36 35 163 A1) or friction clutch (s.
    DE 31 51 486 C1) can be executed.
    The cam clutches have the disadvantage that when they are opened in the event of an overload, relatively large torque peaks occur, which put additional stress on the drive train and can reduce its service life.
    When using a friction disc clutch, these torque peaks do not occur.
    However, heat is generated during slipping, which can quickly damage the clutch.
    It was also proposed that the tractor or carrier vehicles, which move an agricultural implement over a field and comprise a drive motor which is connected to a PTO output for connecting the drive train of the implement via a separable PTO clutch, with a sensor for detecting the torque at the PTO output that is connected to a control unit that switches off the PTO clutch when a threshold value is exceeded in order to prevent damage to the PTO drive (see p.
    DE 101 45 588 A1), whereby the current torque can be detected on the basis of the speed differences at the input and output of an overload clutch (DE 39 06 050 C2). In such arrangements, the switch-off torque can also depend on the implement (DE 29 10 365 A1) and its operating state (DE 34 34 825 A1). Here, the overload clutch is accordingly on board the carrier vehicle, while the device is not provided with its own overload clutch, which has the disadvantage that the device can be damaged if the disconnection on the carrier vehicle side should not work.
    Instead of a switchable PTO shaft clutch, a hydrostatic transmission can also be used, which is switched off if a predetermined torque is exceeded, which is recorded using the pressure in the hydrostatic transmission and compared with a maximum value that is determined for a header to be driven using an input device or one assigned to the implement Memory can be defined (EP 3 348 135 Al). Here, too, the device is not provided with its own overload clutch, so that the disadvantages listed in the previous paragraph exist. In addition, inertia in the hydraulic system, the signal evaluation and the actuators require a certain amount of time to switch off the drive. In the event of an abrupt overload (e.g. due to a large foreign body in the intake of the header), the delay between the occurrence of the overload and the drive actually switched off can also lead to damage to drive elements.
    It has also been proposed (EP 2 151 156 A2) to combine a mechanical overload clutch in the drive train of a baler with a power take-off shaft clutch of a tractor in order to prevent the baler from clogging up the power take-off shaft clutch when the signal from a sensor for detecting the torque exceeds a first threshold value in the drive train, which is smaller than the cut-off torque of the overload clutch. A control unit then causes the PTO clutch to close again, but now with an increased cut-off torque that is greater than the cut-off torque of the overload clutch. A blockage can thus be eliminated with a higher torque than in normal working operation, which can also be greater than the cut-off torque of the overload clutch. The first threshold value can be entered as an absolute value or percentage of the disconnection torque of the overload clutch by the operator via an operator interface of the tractor or can be read out together with the disconnection torque of the overload clutch from a storage device of the baler. It is assumed here that the switch-off torque of the overload clutch is fixed and does not change over time. Through a (at least possible in the case of clearing the blockage)
    Slipping of the clutch, however, leads to wear on the friction elements of the overload clutch, which leads to a reduction in the release torque. The point can be reached at which the release torque is reduced to such an extent that it falls below the first threshold value and torque is only limited by the mechanical overload clutch, with the disadvantages mentioned at the beginning of the resulting wear. The object of the invention is to provide a drive arrangement for an agricultural implement as well as a combination of a carrier vehicle with a drive motor and an implement with such a drive arrangement that can be detachably attached to it, in which the above-mentioned disadvantages are not or only partially to a reduced extent are to be expected. Solution According to the invention, this object is achieved by the teaching of patent claims 1 and 8, the further patent claims citing features that further develop the solution in an advantageous manner.
    A drive arrangement for an agricultural implement comprises a drive motor, a drive train inserted between the drive motor and one or more driven elements of the implement, a device inserted into the drive train that can be switched off by means of an externally powered actuator, a mechanical device inserted into the drive train Overload clutch, which is designed in particular as a friction clutch, and an electronic control unit, which is connected to the power-operated actuator and configured to instruct the actuator to open the drive train if a measured torque transmitted by the drive train exceeds a threshold value that is limited by a maximum of the torque that can be transmitted depends on the overload clutch. The control unit is configured to automatically detect the maximum torque that can be transmitted by the overload clutch on the basis of a sensor-detected difference between the input and output speeds of the overload clutch and the measured torque transmitted by the drive train.
    In other words, the drive arrangement comprises a drive motor, which can be designed as a combustion or electric motor, and one or more devices via a drive train in which a device that can be switched off by means of an actuator and a mechanical overload clutch are inserted one behind the other (ie in series) in any order Drives elements of an implement. During operation, a control unit automatically detects the maximum torque that can be transmitted by the mechanical overload clutch by measuring the current torque and the speeds at the input and output of the overload clutch by sensors and the control unit when a speed difference occurs for the first time at the input and output The output of the overload clutch assumes that the overload clutch has responded and recognizes the torque present in this case as the maximum torque and then uses the latter as the basis for controlling the actuator for the purpose of switching off the disconnectable device in order to separate the drive train to protect the overload clutch and the driven element, if the torque transmitted by the drive train is above a value (which may be a fraction or percentage of less than 100% of the maximum torque, e.g. 90% of it) which depends on the maximum torque.
    In this way, the drive train is protected both mechanically (by the mechanical overload clutch) and electronically (by the control unit and the device that can be switched off by means of the actuator), with the switch-off torque of the device that can be switched off being automatically adapted to the state of wear of the mechanical overload clutch. The above-mentioned disadvantages are thus avoided or are only present to a lesser extent.
    The control unit can be configured to store data relating to the recorded maximum torque that can be transmitted by the overload clutch in a storage device that is physically associated with the implement or a carrier vehicle coupled to the drive motor, and in subsequent operation (also after the drive motor has been switched off and restarted) Drive arrangement, ie possibly even after days, weeks or years) to be read out from the storage device and to be taken into account when controlling the actuator.
    The disengageable device can comprise a hydrostatic transmission with an adjustable hydraulic pump and a hydraulic motor and the actuator can be set up to adjust the hydraulic pump, as disclosed in detail in EP 3 348 135 A1, the disclosure of which is incorporated into the present documents by reference . In another embodiment, the device that can be switched off is a mechanical power take-off shaft clutch that can be switched off, as is described in EP 2 151 156 A2, the disclosure of which is also incorporated into the present documents by reference.
    The control unit can be connected to a sensor set up to generate signals correlated with the drive torque of the hydraulic motor, which signals represent the torque transmitted by the drive train, and the control unit can be operated based on the signals of the sensor and the data with regard to the detected maximum of the overload clutch to command the actuator to adjust the hydraulic pump in the sense of switching off the drive of the hydraulic motor in the event that the maximum torque transmitted by the drive train is exceeded. The sensor can be set up to detect a hydraulic operating parameter of the hydraulic drive train, in particular the pressure applied to the hydraulic motor. However, the torque can also be detected by any other sensor (see EP 2 151 156 A2).
    The control unit can be configured to display the detected maximum torque that can be transmitted by the overload clutch on an operator interface and / or, if it is below a predetermined value, to display corresponding information on the operator interface. If necessary, the operator can ensure that a worn overload clutch is replaced in good time. The carrier vehicle equipped with the drive motor can be a self-propelled harvesting machine, while the implement can be a harvesting header. In another embodiment, the carrier vehicle is an agricultural tractor and the work implement is a soil cultivation implement, for example a rotary harrow. Exemplary embodiment An exemplary embodiment of the invention is explained with the aid of the figures. 1: a schematic side view of a self-propelled harvesting machine in the form of a forage harvester, the harvester is working. Harvester and header
    In FIG. 1, a harvesting machine 10 in the form of a self-propelled forage harvester is shown in a schematic side view.
    The harvesting machine 10 is built on a frame 12 which is carried by front driven wheels 14 and steerable rear wheels 16.
    The harvesting machine 10 is operated from a driver's cab 18 from which a harvesting header 20 in the form of a pick-up can be viewed.
    By means of a pickup 104 of the header 20 picked up crop, z. B.
    Grass or the like is fed via a transverse auger 110 of the header 20 to a feed conveyor 22 with feed rollers, which are arranged inside a feed housing 24 on the front side of the forage harvester 10 and a chopping device 26 in the form of a chopping drum, which is arranged below the driver's cab 18 chops and gives it up to a conveyor device 28.
    The crop leaves the harvesting machine 10 to a transport vehicle driving alongside via an ejection spout 30 which is rotatable about an approximately vertical axis and whose inclination is adjustable of Figure 1 runs to the right.
    A hold-down 106 of the header 20 is adjustable in height by means of an actuator 102 in order to be able to position the hold-down 106 in a position adjacent to the pick-up drum 104 of the header 20 during harvesting and in a raised position when reversing.
    The hold-down device 106 could also be designed as a roller hold-down device known per se.
    Drive arrangement FIG. 2 shows a top view of the drive arrangement of the harvesting machine 10. In the rear region of the harvesting machine 10 there is an internal combustion engine serving as a drive motor 32, in particular in the form of a diesel engine, which is connected to longitudinal members and / or cross members of the frame 12.
    The internal combustion engine 32 extends in the forward direction of the harvesting machine 10 to approximately the rear end of the frame 12 and includes a crankshaft 34 that extends forwardly out of the housing of the internal combustion engine 32. The crankshaft 34 drives an output shaft 36 extending horizontally and forwardly.
    The output shaft 36 is connected at its front end to an angular gear 38, which is composed of a first bevel gear 40, which is connected to the longitudinal shaft 36 via a coupling 42, and a second bevel gear 44, which meshes with the first bevel gear 40. The axis of rotation of the second bevel gear 44 extends horizontally and transversely to the forward direction. The second bevel gear 44 is connected to a shaft 46 which drives a pulley 48. The belt pulley 48 is looped around by a drive belt 50 which also loops around a belt pulley 52 for driving the conveying device 28 and a belt pulley 54 for driving the chopping device 26. The angular gear 38, the shaft 46, the belt pulleys 48 and 54 and the drive belt 50 form a drive train which connects the output shaft 36 with the chopping device 26.
    Between the clutch 42 and the housing of the internal combustion engine 32, the longitudinal shaft 36 additionally carries a gear wheel 56 which is toothed on the circumference and which meshes with a further gear wheel 58 which, via a shaft 60, drives a pump unit 62 which is used to supply the hydraulic motors to drive the wheels 14 , 16, a hydraulic motor 78 serving via a gear 64 to drive the intake conveyor 22 and other hydraulically driven components of the harvesting machine 10 are used. Details of a possible drive for the hydraulic motor 78, the pump of which could also be driven by the shaft 46, can be found in DE 10 2013 214 986 A1 and the prior art cited there. The advance speed of the harvesting machine 10 can be controlled by an actuator 100 which can, for example, influence the position of a swivel plate of the pump and / or the motor in the hydrostatic drive system of the wheels 14 and possibly 16.
    In the embodiment shown, the shaft 46 is permanently in drive connection with a hydraulic pump 66 with adjustable displacement and flow direction. The hydraulic pump 66 is connected in a closed circuit to conduct hydraulic fluid with a hydraulic motor 68, which has a fixed absorption volume and serves to drive the driven elements of the header 20, which could also be a header for maize harvest or the production of whole plant silage. The hydraulic motor 68 comprises an output shaft 118 which is coupled to the driven elements of the harvesting header 20 via a mechanical overload clutch 112 arranged on board the harvesting header 20, which in the example shown are the transverse screw conveyor 110 and the pick-up drum 104. The speeds on the input and output sides of the overload clutch 112 are monitored by assigned speed sensors 114 and 116. The overload clutch 112 is designed in particular as a friction disk clutch known per se. The speed sensors do not have to interact directly with the drive and output side of the overload clutch 112, but can be arranged at any point on the drive train downstream of the hydraulic motor 68 or the overload clutch 112, with any existing sensors within the drive train - e.g. in existing reduction gears or the like - can be used and / or known gear ratios can be used.
    An outlet 82 of the hydraulic pump 66 and an inlet 86 of the hydraulic motor 68 are directly connected through a first pressure line 84, i. H. connected to one another without the interposition of further valves or the like. An inlet 80 of the hydraulic pump 66 and an outlet 72 of the hydraulic motor 68 are direct through a second pressure line 84 ″, i. H. connected to one another without the interposition of valves or the like. The hydraulic motor 68 can be located on board the harvesting machine 10 and mechanically coupled to the driven elements of the harvesting header via a coupling arrangement (see DE 10 2010 028 605 A1) or it is located directly on the harvesting header 20 and is Embodiment separable) lines 84, 84 ° connected to the harvesting machine 10.
    A control unit 70 controls an actuator 76 which influences the flow rate and flow direction of the hydraulic pump 66. In addition, the control unit 70 has an actuator 94 that opens and closes the clutch 42, an operator input device 98 with an integrated display unit arranged in the driver's cab 18, the actuator 100 influencing the forward speed of the harvesting machine 10, the actuator 102 of the hold-down device 106 and a sensor 110 connected to detect the position of a driving lever 108. In the example shown, the drive train of the driven elements 110, 104 of the header 20 (serving as an example of an implement) includes the hydraulic pump 66 and the hydraulic motor 68 (which are inserted into the drive train and can be switched off by means of the external force-operated actuator 76) as well as the Mechanical overload clutch 112 connected in series with the disconnectable device.
    Operation of the harvesting machine The operator input device 98 enables the operator to select a (road) driving mode in which the clutch 42 is open and neither the chopping device 26 nor the intake conveyor 22 is driven, since the further hydraulic motor 78 is then not driven either. The hydraulic pump 66 and thus the driven elements of the harvesting header 20 are also at a standstill because of the disengaged clutch 42. The wheels 14 and possibly (in the case of all-wheel drive) also 16 are driven via their hydraulic motors and the pump assembly 62. Furthermore, the operator input device 98 enables the operator to select a first operating mode (harvesting operation) in which the clutch 42 is closed and the chopping device 26 and the conveyor device 28 are driven via the drive belt 50. The shaft 46 then also drives the hydraulic pump 66, which acts on the hydraulic motor 68 via the first line 84 with pressurized hydraulic fluid, which in turn drives the harvesting header 20. The intake conveyor 22 is then driven by the pump assembly 62 via the further hydraulic motor 78. The actuator 76 is controlled by the control unit 70 in such a way that a desired retraction speed of the driven elements 104, 110 of the harvesting header 20 results, which can be entered by the operator input device 98 or is automatically specified by the control based on measured values from sensors, the properties of the harvested crop, such as moisture or compressibility, or is defined by data stored in a storage device 90 of the header 20 or depends on the advance speed V and / or the cutting length (see WO 02/056672 A1 and EP 1 609 351 A1) or fixed is given. The storage device 90 can be connected to the control unit 70 via a bus system or can communicate wirelessly with the control unit 70 via any protocol.
    In the first operating mode, the hydraulic fluid flows from the outlet 82 of the hydraulic pump 66 through the line 84 to the inlet of the hydraulic motor 68 and from its outlet 72 through the line 84 'to the inlet 80 of the hydraulic pump. The terms inlet and outlet therefore relate to the direction of flow of the hydraulic fluid during harvesting, which is also represented by the arrow in FIG. The control unit 70 is connected to a pressure sensor 88, which measures the pressure in the line 84, and a pressure sensor 88 * for measuring the pressure in the line 84 °.
    In the first operating mode (harvesting mode), the control unit 70 proceeds according to the flow chart in FIG. Accordingly, a header 20 with a mechanical overload clutch 112 is connected to the harvesting machine 10 and data relating to the release torque of the overload clutch 112 are stored in the storage device 90 of the header 20, that is, the maximum torque that can be transmitted by the overload clutch 112 that is not required to switch off the overload clutch 112 leads (step 302). In the case of a brand-new header 20, these data can be preset at the factory, and are used during operation (cf.
    below) but adjusted if necessary. In addition, the harvesting machine 10 is equipped (step 304) with a hydraulic drive (pump 66 and motor 68) of the harvesting header 20 and (step 306) the harvesting header 20 is attached to the harvesting machine 10.
    During operation, the control unit 70 takes the data stored there with regard to the maximum torque (step 308) from the memory device 90 and from a memory of the control unit 70 drive parameters of the harvesting machine 10 (step 310) in order to determine pressure limits dp and dp ‘in step 312. The maximum torque of the overload clutch 112 (step 308) is converted into a pressure difference dp in the lines 84 and 84 ‘, which is determined on the basis of the drive parameters of the harvesting machine 10 (step 310) (more details in EP 3 348 135 A1). To switch off the overload of the drive arrangement, a pressure limit dp ‘below dp is set, which can also take into account tolerances of the overload clutch 112 in order to avoid triggering the overload clutch 112 during normal harvesting operation. For example, the pressure limit dp can be 90% of dp.
    During operation of the harvesting machine 10 (step 314), the difference in the pressures in the lines 84 and 84 'is then determined in step 316, based on the signals from the sensors 88 and 88. If the difference in step 318 is not greater than the pressure limit dp', Step 316 follows again, and otherwise step 320, in which the control unit 70 commands the actuator 76 to switch off the drive of the harvesting header 20.
    Parallel to steps 316 and 318, in step 322 the speed difference at the input and output of overload clutch 112 is determined by means of speed sensors 114 and 116 by control unit 70, and as long as there is no recognizable speed difference in step 324, step 322 follows again the step 326 takes place, in which a new differential pressure dp ″ is determined. This new differential pressure dp ‘is that pressure at which the overload clutch 112 (at the time of a detected speed difference) started to disconnect the drive train. Step 326 is followed by the shutdown of the drive in step 320 and, at the same time, steps 312 and 328. In the latter, a new torque is determined (analogously to step 312) at which the overload clutch 112 has triggered and is stored in the memory device 90. In further operation, the new differential pressure dp '' is used as dp (or the differential pressure dp is adjusted in the direction of dp ° ', for example with a certain inertia in order not to take incorrect measurements, noise or the like into account too much) in order to im In step 312, again to establish a new pressure limit dp ', analogously to step 312. The switch-off pressure of the actuator 76 is accordingly determined automatically based on a measurement of the switch-off torque of the overload clutch 112.
    In step 320, a warning can be output to the operator via the display unit of the operator input device 98 in order to inform the operator that the harvesting header 20 has been switched off. In addition, the control device 70 can instruct the actuator 100 to stop the harvesting machine 10 and a further actuator can be instructed to bring the hydraulic motor 78 to a standstill. The further actuator can adjust a swash plate of the pump assigned to the hydraulic motor 78 in the pump assembly 62 and / or of the hydraulic motor 78 (cf. 10 2013 214 986 A1). In the event that the sensors 88, 88 ‘detect that the torque of the overload clutch 112 has been exceeded, the drive of the harvesting header 20 and the intake conveyor 22 can accordingly be stopped and the harvesting machine 10 stopped. The procedure described in EP 3 348 135 A1 for reversing the harvesting header 20 and / or for controlling the speed of the harvesting machine 10 during harvesting can also be used.
    By knowing dp ‘‘, which is assigned to the actual release torque of the overload clutch 112, it is possible to recognize when the overload clutch 112 is so worn that it has to be replaced. For this purpose, a further threshold dp ‘‘ (or an associated torque) can be stored in the control unit 70 and / or in the memory unit 90. As soon as dp ‘‘ is no longer greater than dp ‘‘ ‘, a message is given to the driver via the display unit of the operator input device 98 that the overload clutch 112 is worn and needs to be replaced. It is also possible to have the ratio (dp '- dp' ') / (dp' - dp '' ”) - which corresponds to the current degree of wear of the overload clutch 112 - visible to the driver via the display unit of the operator input device 98 before this threshold is reached close. Since it can happen that a harvesting machine 10 can be operated with different harvesting attachments 20 of the same type (and the same harvesting header 20 with different harvesting machines 20), it is expedient that at least the value dp or its associated triggering moment is stored on the storage device 90 of the harvesting header 20 is deposited and, after attachment of the harvesting header 20 to the harvesting machine 10, is transmitted to the control unit 70 of the harvesting machine 10, as explained above. In situations in which dp is updated by dp ‘(or the associated maximum torque, steps 328 and 302), the value stored in the storage unit 90 of the header 20 will also be adapted. As an alternative or in addition, it would be conceivable to store the maximum torque of the overload clutch 112 in a memory of the control unit 70 of the harvesting machine 10, together with a unique identification of the associated header 20, e.g. the serial number, or wirelessly for the control unit 70, e.g.
    available via an internet connection and a cloud.
    In the embodiment shown, the header 20 is a pick-up. It could also be replaced by a harvesting header for maize (cf. for example EP 0 760 200 A1) or a cutting mechanism of a combine harvester. The harvesting machine 10 described here as an example for a carrier vehicle could also be a
    Be a combine harvester or a cotton picker or a sugar cane harvester or a mower, i.e. the crop does not necessarily have to be conveyed from the header 20 into the harvesting machine 10.
    The carrier vehicle could also be designed as an agricultural tractor, while the implement could be any device connected to it for harvesting or soil cultivation or any other purpose.
    权利要求:
    Claims (9)
    [1]
    1. A drive arrangement for an agricultural implement, comprising: a drive motor (32), a drive train inserted between the drive motor (32) and one or more driven elements (104, 110) of the implement, a drive train inserted into the drive train and operated by an external force actuator ( 76) disengageable device, a mechanical overload clutch (112) inserted into the drive train, and an electronic control unit (70) which is connected to the power-operated actuator (76) and is configured to instruct the actuator (76) to open the drive train, if a measured torque transmitted by the drive train exceeds a threshold value that depends on a maximum torque that can be transmitted by the overload clutch (112), characterized in that the control unit (70) is configured to automatically use the maximum torque that can be transmitted by the overload clutch (112) a sensed difference of the on - and the output speeds of the overload clutch (112) and the measured torque transmitted by the drive train.
    [2]
    2. Drive arrangement according to claim 1, wherein the control unit (70) is configured to store data relating to the recorded maximum torque that can be transmitted by the overload clutch in a storage device (90) which is physically associated with the implement or a carrier vehicle coupled to the drive motor, and to be read out from the storage device (90) in the subsequent operation and to be taken into account in the control of the actuator (76).
    [3]
    3. Drive arrangement according to claim 1 or 2, wherein the disconnectable device comprises a hydrostatic transmission with an adjustable hydraulic pump (66) and a hydraulic motor (68) and the actuator (76) is set up to adjust the hydraulic pump (66).
    [4]
    4. Drive arrangement according to claim 3, wherein the control unit (70) is connected to a sensor (88, 88 ') set up to generate signals correlated with the drive torque of the hydraulic motor (68), which signals represent the torque transmitted by the drive train, and the Control unit (70) can be operated based on the signals of the sensor (88, 88 ") and the data with regard to the recorded maximum torque that can be transmitted by the overload clutch (112) in the event that the maximum torque transmitted by the drive train is exceeded, the actuator (76) to command to adjust the hydraulic pump (66) in the sense of switching off the drive of the hydraulic motor (68).
    [5]
    5. Drive arrangement according to claim 4, wherein the sensor (88, 88 °) is set up to detect a hydraulic operating parameter of the hydraulic drive train, in particular the pressure applied to the hydraulic motor (68).
    [6]
    6. Drive arrangement according to one of the preceding claims, wherein the control unit (70) is configured to display the detected maximum torque that can be transmitted by the overload clutch (112) on a display device of an operator input device (98) and / or if it is below a predetermined value, a to display corresponding information on the display device.
    [7]
    7. Drive arrangement according to one of the preceding claims, wherein the overload clutch (112) is a friction clutch.
    [8]
    8. Combination of a carrier vehicle with a drive motor and a working device that can be detachably attached to it, as well as a drive arrangement according to one of claims 1 to 7.
    [9]
    9. Combination according to claim 8, wherein the carrier vehicle is a self-propelled harvesting machine (10) and the implement is a harvesting header (20).
    类似技术:
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    同族专利:
    公开号 | 公开日
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    引用文献:
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    法律状态:
    2021-09-30| FG| Patent granted|Effective date: 20210820 |
    优先权:
    申请号 | 申请日 | 专利标题
    DE102019217298.9A|DE102019217298A1|2019-11-08|2019-11-08|Drive arrangement for an agricultural implement with mechanical overload clutch and automatic adjustment of the switch-off torque|
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