Rhizomatic crop separation equipment and rhizomatic crop harvester

Abstract

The invention relates to a root crop separating device (4), in particular for a potato digger (3), having a feed belt (10) for feeding harvest, the feed belt having a deflection axis (20) running at least substantially parallel to a horizontal ground; having at least one roller (24) arranged above the feed belt; and a discharge belt (12) for discharging the harvest; wherein a plurality of rollers (24) are arranged above the feed belt (10), which rollers are arranged next to one another as viewed in the feed direction and are designed as separating rollers, the axes of rotation of which rollers are at an angle to the belt plane of the feed belt, which belt plane is formed in particular by a deflection axis. By such an arrangement, harvest can be effectively separated into rhizomatic crops and blends.

Description

Technical Field

[0001] The present invention relates to a root crop separating device according to the preamble of claim 1 and a root crop harvester, in particular a potato digger. Background Art

[0002] Current root crop separating devices, for example, have a separating device that transfers the harvested product located on the input belt to the discharge belt through a circulating and rotating finger belt, during which unwanted admixtures in the form of, for example, stones are to be separated. Under difficult operating conditions, the shape and size of soil clods may be similar to those of potatoes, and in this case, it is difficult to filter them out.

[0003] Under difficult operating conditions, especially when the soil is wet and thick, a roller separating device is first used. With the help of this roller separating device, although a part of the unwanted admixtures can be separated from the harvested product, the harvested product stream cannot be sorted for subsequent processing. In this regard, for a sorting process that should utilize the width of the conveyor belt as much as possible downstream, a sorting device based on a circulating and rotating finger belt must be used. However, due to its structural form, even this sorting device only distributes the harvested product over a small part of the area of the discharge belt. Summary of the Invention

[0004] The object of the present invention is to further develop a root crop separating device so that it can separate the harvested product into root crops and admixtures as effectively as possible.

[0005] This object is achieved by the subject matter of claim 1 and the subject matter of claim 14. Advantageous designs of the present invention are derived from the dependent claims and the following description.

[0006] A root crop separating device, especially for a potato digger, includes an input belt in the form of a rake belt in particular, through which the harvested product containing root crops and unwanted admixtures is fed during operation. The feeding is along the direction of rollers arranged above the input belt of the root crop separating device. The input belt is provided with a steering axis that extends at least substantially parallel to the horizontal ground, and the input belt can be steered through this steering axis. The root crop separating device further has an output belt in the form of a rake belt in particular, which is arranged for discharging the harvested product. The root crop separating device according to the present invention is characterized in that a plurality of rollers arranged side by side in the feeding direction and configured as separating rollers are arranged above the input belt, and the rotational axes of these rollers form an angle with the belt plane of the input belt, which belt plane is formed by the steering axis in particular.

[0007] In the operation of a root crop separating device, unwanted admixtures are separated by a large number of gaps existing between the individual rollers. The plurality of rollers arranged side by side at an angle to each other above the feed belt and their gaps, which are also at an angle relative to the belt plane, result in a greater dynamics during the separation process compared to the rollers in the prior art, since the gaps formed by the rollers and between the moving parts (feed belt and separating rollers) are constructed in a more grid-like (gitterartiger) manner than gaps extending only parallel to the conveying plane. Furthermore, on both sides of the gaps extending vertically between the respective separating rollers, there are provided surfaces that rotate in particular in opposite directions, and these gaps act on the harvested material at a greater height, which also improves the separation performance.

[0008] Furthermore, when the separating rollers rotate in the corresponding directions, the separating rollers convey the harvested material in the running direction towards the discharge belt during operation, so that in addition to improving the separation performance, the unseparated harvested material can also be conveyed better further. During operation, the surface of the separating roller facing the oncoming harvested material preferably moves in the direction of the discharge belt, so that the oncoming harvested material can be conveyed better further.

[0009] The separating rollers are above the feed belt but not far from it, so that the root crops between the feed belt and the separating rollers are not conveyed away through them. The size of the gap formed between the feed belt and the separating rollers is such that unwanted admixtures in the form of, for example, soil still partly pass through them and are discharged between the conveyor belt and the lower, i.e., the roller end face facing the conveyor belt, while any harvested material in the form of root crops is reliably guided further in the direction of the discharge belt. In particular, the distance between the roller end face and the surface of the conveyor belt is not greater than 3 cm. Here, the flat envelope of the conveyor belt in the working surface (Arbeitstrum) is regarded as the surface of the conveyor belt. This can also be regarded as the conveying plane.

[0010] In particular, the feed belt and the discharge belt can be arranged directly side by side with each other, so that the separating rollers arranged side by side transversely or at an angle to each other relative to the feed direction in a top view can quickly convey the harvested material further to the discharge belt.

[0011] According to an advantageous refinement of the invention, at least one, in particular a plurality of, rollers designed as distribution rollers are arranged above the discharge belt, these rollers being arranged side by side when viewed in the discharge direction, wherein the rotational axis of at least one distribution roller is at an angle with respect to another belt plane, which is formed in particular by the turning axis of the discharge belt. In the case of a plurality of rollers designed as distribution rollers and arranged above the discharge belt and whose rotational axes are at an angle with respect to the belt plane, these rollers are arranged side by side when viewed in the discharge direction such that the rotational axes of the distribution rollers do not coincide, in particular. Preferably, the distribution rollers are the same rollers as those used as separation rollers, where the surfaces can be different, but do not have to be different.

[0012] Even rollers designed as distribution rollers can provide very good distribution on the discharge belt. This is particularly true for narrow conveyor belts with a width between 800 and 1000 mm.

[0013] The diameter of the separation or distribution rollers is in particular in the range between 100 and 200 mm.

[0014] It goes without saying that the rollers arranged above the feed belt and the discharge belt are designed to act on the harvested product when it is conveyed on these belts.

[0015] The turning axis is the turning axis of the upper loaded surface (Lasttrum) or the force-bearing surface of the respective conveyor belt. Between these turning axes, the harvested product is conveyed by the respective belt. In particular, the rotational axis of the respective roller is at an angle between 45° and 90° with respect to the respective belt plane of the feed belt or the discharge belt. Advantageously, the rotational axis of the roller is oriented at an angle with respect to the belt plane corresponding to the conveying plane formed by the conveyor belt. At the same turning radius, it is parallel to the belt plane formed by the turning axes of the respective belt. In particular, the separation rollers and the distribution rollers are oriented identically with respect to the belt plane.

[0016] At least one distribution roller distributes the harvested product conveyed by the separation roller in the direction of the discharge belt as evenly as possible over the entire width of the discharge belt in order to utilize the width of the discharge belt for subsequent sorting or further separation. If there are a plurality of distribution rollers, the spacing between these distribution rollers is greater than the spacing between the separation rollers such that root crops pass between the distribution rollers and are further conveyed on the discharge belt. The spacing between the last separation roller above the feed belt and the first distribution roller above the discharge belt can also be greater than the spacing between the individual separation rollers.

[0017] For the purposes of the present invention, those rollers which are arranged close to one another above the feed belt such that the desired harvest cannot pass between the rollers are referred to as separating rollers. The distribution rollers are those rollers which are located in particular above the discharge belt and which selectively allow the individual desired parts of the harvest in the form of root crops to pass through and which are mainly used for distributing transversely over the width of the conveyor belt.

[0018] Depending on the arrangement of the feed belt and the discharge belt relative to one another, it is advantageous to arrange rollers above the respective feed belt and discharge belt. In particular, the rollers are arranged in a row at an angle, namely at an angle between 45° and 90° relative to the conveying direction of the respective belt.

[0019] If the root crop separating device is installed in a root crop harvester or a harvest conveying device located on horizontal ground, the axis of rotation is parallel to the ground.

[0020] According to a further advantageous design of the invention, the root crop separating device has a sensor assembly including a control unit for detecting the harvest to be conveyed on the discharge belt and a separating device arranged at the end side of the discharge belt, which separating device, viewed in the discharge direction, includes a plurality of separating elements arranged side by side and individually controllable by the control unit. When the separating elements are actuated, they are configured to impart an impulse to the harvest moving away from the discharge belt during operation, in particular falling. The sensor assembly is configured to identify the admixtures to be sorted conveyed on the discharge belt. Taking into account its position and the speed of the discharge belt, suitable separating elements are then actuated and the admixtures are knocked out of the harvest stream onto an admixture belt, while the desired harvest can fall onto another conveyor belt. Due to the parts of the harvest distributed over the width of the discharge belt, such a device in combination with the distribution rollers and the separating rollers can achieve very good and very high precision, since the harvest stream is distributed as wide as possible over the discharge belt and reaches the area of action of the separating device. For this purpose, up to twenty (including twenty) distribution rollers are provided, which are distributed over the width of the discharge belt. The width of the discharge belt is at most 2500 mm, and if necessary even at most 2800 mm.

[0021] In particular, the harvest flow is recorded optically and evaluated in the control unit based on the image data recorded by the camera. The latter includes the necessary EDV devices, such as a processor, a working memory and a read-only memory and the necessary interfaces.

[0022] Advantageously, the separating rollers arranged above the feed belt are equidistant from one another in order to correspondingly process the incoming harvest evenly across the entire width of the feed belt. The distance from one another is understood here as the distance between the envelopes of the rollers in operation. If the separating rollers relate to surfaces with intermeshing profile parts, the distance is negative according to the above definition. This is possible, although it is advantageous to use rollers whose outer envelopes are spaced apart from one another by at least 0.5 to 1 cm, preferably up to 3 cm, when rotating. Even under difficult conditions, this spacing can produce good separation results.

[0023] The rotational direction of the rollers is designed such that, on one side of the incoming material flow, the rotational direction points in the direction of the discharge belt.

[0024] Preferably, the spacing between at least two adjacent distribution rollers above the discharge belt is different. In particular, this spacing increases as the distribution rollers move away from the feed belt, so that initially smaller root crops and then gradually larger root crops or admixtures are allowed to pass through the gaps and are correspondingly positioned on the discharge belt. This also makes it easier to separate by size thereafter.

[0025] When using a sensor assembly as described below, in particular, the spacing of the distribution rollers above the discharge belt and, if necessary, additionally above the feed belt can be designed to be automatically adjustable. This spacing can here be adjusted, for example, by means of at least one associated adjusting device, such as an adjusting cylinder of a holding device, according to the object size, i.e., in particular the size of the potatoes. The object size is determined optically, for example, by image evaluation in an associated computer unit. Alternatively or additionally, the rotational speed of the rollers driven by the drive device and / or their height on the respective belt can also be automatically adjusted in particular.

[0026] When using the separating device with a sensor assembly and a control unit described above, it is particularly advantageous that, when viewed in the discharge direction, the width of the separating element can also increase as the spacing increases, so that the effect of the separating element and its effect on the output impulse of the gradually increasing admixtures or root crops can be improved.

[0027] According to an improvement of the invention, the rotational axes of at least some of the rollers are preferably oriented at right angles to the respective belt plane of the feed belt and / or the discharge belt, so that when using at least approximately cylindrical rollers, good positioning of the rollers relative to the surfaces of the input belt and the output belt can be achieved by means of the associated holding device.

[0028] According to another preferred design of the present invention, the rotational axes of the rollers above the input belt are arranged in a straight line in a top view, so as to achieve a uniform further conveyance in the direction of the discharge belt. Alternatively or additionally, in a top view, the rotational axes of the rollers above the discharge belt are also arranged in a straight line, so as to easily achieve a uniform distribution there.

[0029] Preferably, the rotational axes of the rollers above the feed belt and the discharge belt are arranged in a line, which is particularly advantageous for fastening the rollers in the associated holding device and allows for a uniform treatment of the harvested material flow. This is particularly the case for the use of (parallel extending) steering axes of the (feed belt and the discharge belt), which enables a conveyance in the same direction and the corresponding conveyor belts to be arranged side by side. The harvested material flow is hereby directly transferred from the feed belt to the discharge belt arranged closely adjacent to the feed belt. Accordingly, the working surfaces of the conveyor belts and the resulting conveyance planes are preferably arranged at the same height.

[0030] According to another preferred design of the present invention, the root crop separating device has at least one drive device for the rollers, in particular wherein the drive device is designed such that during the operation of the rollers, the rotational directions and / or rotational speeds of at least a part of the distribution rollers and the separating rollers are different. In order to achieve different rotational directions of the separating rollers and the distribution rollers, the drive device can be provided with two drives rotating in different directions, in particular for example hydraulic drives. Alternatively, the drive device can have a transmission device for changing the rotational direction. The drive device is preferably arranged for driving the rollers individually and is thus independent of the drives of the feed belt and the discharge belt, more precisely the speeds of the drives. Thereby, the separation and distribution of the harvested material can be adjusted particularly well.

[0031] When using a drive unit for the separating rollers and another drive unit for the distribution rollers (for example in the form of a hydraulic motor or an electric motor respectively), a drive train is particularly formed at the upper end of the roller body.

[0032] Preferably, except for the first and the last rollers of each group of distribution rollers or separating rollers, each roller is respectively provided with two gears, through which the drive torque is introduced on the one hand and the drive torque is led out on the other hand. For this purpose, these gears are coupled to each other by a chain, for example, and are respectively deflected by a tensioning wheel. This can also be a pulley and a belt, through which the tensioning roller can be tensioned. If the spacing between the individual distribution rollers and / or separating rollers is variable according to an improvement of the present invention, the possible drive belt can be appropriately tensioned hereby by a correspondingly movable tensioning roller of a unit consisting of two rollers.

[0033] Advantageously, the roller is supported at its upper end in at least one holding device, in particular at least a part of the roller being configured to enable height adjustment and / or inclination adjustment by means of the holding device. Thus, the holding and supporting of the roller in the area of the harvested product can be dispensed with. This is advantageously corresponding for implementation in the machine and thus correspondingly for the sorting or separating process. For example, height adjustment and / or inclination adjustment of the corresponding roller device can be achieved by arranging the roller device in a pivot bearing or by arranging the pivot bearing in a corresponding frame. The adjustment can be supported motorically by means of an electric or hydraulic adjustment device.

[0034] In particular, the holding device comprises a frame in which all the rollers of the root crop separating device are supported. Here, this can be, for example, sheet parts arranged one above the other, which accommodate the supports of the respective rollers between themselves.

[0035] In order to be able to adjust the spacing of the distribution roller and / or the separating roller, the holding device can have a shearing mechanism, wherein the holding device can additionally pivot about an axis which is in particular perpendicular to the belt plane above the conveyor belt. By changing the spacing while keeping the number of rollers the same, if the holding device can pivot, these rollers can extend side by side at different angles on the respective belt.

[0036] The object initially set is also achieved by a root crop harvester having a root crop separating device described above or below. The root crop harvester has the corresponding advantages of the root crop separating device described above or below. Description of the Drawings

[0037] Further advantages and details of the invention result from the following description of the drawings. The drawings schematically show:

[0038] Figure 1 The subject matter according to the invention is shown in a side view,

[0039] Figure 2 A schematic view of another subject matter according to the invention is shown in a top view,

[0040] Figure 3 Another subject matter according to the invention is shown in a top view,

[0041] Figure 4 Shown in a view along the feed direction according to Figure 1 the subject matter of,

[0042] Figure 5 A part of the subject matter according to the invention is shown in a perspective view,

[0043] Figure 6shows a part of the subject matter according to Figure 5 of the subject matter,

[0044] Figure 7 shows another subject matter according to the present invention in a perspective view,

[0045] Figure 8 shows the subject matter according to Figure 7 in a top view. Detailed Description

[0046] The respective technical features of the embodiments described below can also be combined with the features of the previously described embodiments and any one of the independent claims and the possible additional claims to form the subject matter according to the present invention. Elements that perform at least partially the same function in terms of function are labeled with the same reference numerals if meaningful.

[0047] The harvester 2 according to the present invention is currently configured as a potato digger to be towed on a field 3 that extends horizontally at present. The potato digger has a root crop separating device 4 according to the present invention. Starting from this root crop separating device, the root crops are conveyed by a sorting belt 6 to a hopper 8 ( Figure 1 ). Generally, the root crop separating device 4 can be positioned at different locations in the root crop harvester 2. However, it is particularly advantageous to use the root crop separating device as the last separating device before transferring the root crops to a sorting table or sorting belt 6.

[0048] The root crop separating device 4 has a feed belt 10 configured as a rake belt and a discharge belt 12 configured as a rake belt. The discharge belt 12 configured as a rake belt has a discharge direction 14 that extends parallel to or corresponds to the feed direction 16 ( Figure 2 ). The feed belt 10 and the discharge belt 12 are directly juxtaposed with each other such that the harvest flow indicated by a plurality of dashed arrows 18 can be transferred from the feed belt 10 to the discharge belt 12.

[0049] The feed belt 10 and the discharge belt 12 run around turning axes 20 and 22 respectively. Each of the turning axes 20 and 22 of the conveyor belts forms at least one belt plane for each conveyor belt, and the belt plane extends parallel to the surfaces 21 and 23 of the corresponding conveyor belt (see Figure 4 ). Above the plane formed by the turning axis 20, currently six rollers 24 configured as separating rollers and having a rotational axis 25 are provided, by means of which admixtures are separated from the harvest flow 18 while deflecting another harvest flow 18 of the discharge belt 12.

[0050] Above the discharge belt 12, a plurality of distribution rollers 26 are arranged side by side with respect to one another in the discharge direction 14. Their axes of rotation 27 are likewise perpendicular to the plane formed by the axis of rotation 22 of the discharge belt. The harvest stream 18 is distributed over the entire width of the discharge belt 12 by the distribution rollers 26 arranged at intervals with respect to one another. Accordingly, convenient sorting can be carried out, for example, on the picking belt 6.

[0051] According to an improved embodiment of the invention, a sensor assembly 28 is provided for the discharge belt 16, the data of which is evaluated by a control unit 30 and by means of which a plurality of separating elements 32 of a separating device 34 can be controlled. Viewed in the discharge direction 14, they are arranged side by side with respect to one another and thus occupy the entire width of the discharge belt 16. They are configured to impart a change of direction impulse to the harvest moving away from the discharge belt, in particular falling, during operation. For this purpose, they can, for example, be transferred as pressured fingers from a retracted rest position to a contact position intervening in the flight path of the harvest. According to Figure 2 the embodiments of and according to Figure 3 the embodiments of the rollers 24 and 26 are provided during operation with a direction of rotation opposite to the clockwise direction (in a top view) and thus continue to guide the harvest reaching their area further to the right in the Figure 4 illustrations shown. The axis of rotation 25 of the separating roller 24 and the axis of rotation 27 of the distribution roller 26 are perpendicular to the conveying plane, i.e., the surfaces 21 and 23.

[0052] The spacing between the distribution rollers 26 also increases towards the right side of the figure, such that in the illustrations shown, the harvest increasing in size is distributed from left to right on the discharge belt ( Figure 4 ). The axes of rotation of the separating rollers 24 and the axes of rotation of the distribution rollers 26 lie on a line 38, such that all the separating rollers and distribution rollers can be conveniently held in a common holding device.

[0053] According to another preferred design of the invention, it is provided with a drive device which includes two drive elements 40 in the form of hydraulic motors. The separating rollers 24 and the distribution rollers 26 are each driven by one drive element 40. For this purpose, a drive train is formed starting from the drive shaft of the respective hydraulic motor, which drive train connects the respectively adjacent rollers to one another. In addition, each roller pair is provided with a tensioning roller by means of which a respective tensioning belt 42 can be tensioned ( Figure 5 ).

[0054] All rollers are held in a common holding device. The holding device has two supports 46 extending transversely with respect to the conveying direction 16, which supports extend over the entire width of the feed belt 10 and the discharge belt 12 in front of or behind the rollers when viewed in the travel direction. Between these two supports 46, a holding plate 48 is arranged, which is firmly connected to the supports 46 and serves as a support for the upper part of the shaft 50 of the respective roller. The support 52 can be, for example, a spherical bearing ( Figure 6 ).

[0055] The shaft 50 has two gears 54 at its upper end, through which the incoming torque is received on the one hand and the outgoing torque is transmitted on the other hand. In order to better fasten the holding device in the frame of the root crop harvester 2, a rod 56 is also provided, by means of which the holding device can be held in the frame of the harvester 2. For example, adjusting devices can be arranged at the holding rod 56, by means of which the inclination adjustment and / or height adjustment of the rollers can be achieved.

[0056] The rollers themselves can be configured as finger rollers, lip rollers and / or segment rollers, and different surfaces can also be selected in order to perform the corresponding main functions (the separating roller 24 for the separating function and the guiding function, the distributing roller 26 for the distributing function). For example, in a simple embodiment, the surfaces of all rollers can be the same and are provided with undercut tabs 58 connected in a flexible manner, by means of which the harvested product in the form of root crops can be gently handled on the one hand and the remaining seedlings can be drawn into the gap between the separating rollers on the other hand. The diameter of the rollers is particularly in the range between 120 mm and 130 mm.

[0057] In Figure 7 and Figure 8 the embodiment of, Figure 5 the holding device shown in is arranged above the two conveyor belts 10 and 12. The two conveyor belts 10 and 12 are configured to rise with respect to the horizontally extending land 3 and thus form an angle. Correspondingly, the rotational axes 25 and 27 of the separating roller 24 and the distributing roller 26 are also at an angle with respect to the land 3, but at the same time at an angle with respect to the belt plane or at an angle between 45° and 90° and not parallel to the belt plane. In the present case, the belt plane corresponds to the conveying plane and is formed by the surfaces 21 and 23. At the same time, the rotational axes 25 and 27 of the rollers are also at an angle between 45° and 90° with respect to the belt plane formed by the respective turning axes 20 and 22. The cleaning effect is enhanced by the rising conveyor belts 10 and 12, because the harvested product can accumulate at the rollers and can thus be separated at the height of the slots or spaces existing between the rollers.

Claims

1. Root crop separating device, in particular for a potato harvester, the root crop separating device having: A feed belt (10) for feeding harvested material, wherein, The feed belt (10) has a turning axis (20) extending at least substantially parallel to the horizontal ground. At least one roller arranged above the feed belt (10). And a discharge belt (12) for discharging the harvested product. It is characterized in that above the feed belt (10), a plurality of rollers are arranged side by side when observed in the feed direction (16) and are configured as separating rollers (24), and the rotation axes (25) of the rollers are angled with respect to the belt plane of the feed belt (10), and the belt plane is particularly formed by the turning axis (20).

2. The root and tuber crop separation device according to claim 1, characterized in that, Above the discharge belt (12), at least one, in particular a plurality of, rollers configured as distribution rollers (26) are arranged side by side when observed in the discharge direction (14), wherein the rotation axis (27) of at least one of the distribution rollers (26) is angled with respect to another belt plane of the discharge belt, and the another belt plane is particularly formed by the turning axis (22) of the discharge belt (12).

3. The root and tuber crop separating device according to any one of the preceding claims, characterized in that, The root crop separating device has a sensor assembly (28) including a control unit (30) for detecting the harvested product to be conveyed on the discharge belt (12) and a separating device (34) arranged at the end side of the discharge belt (12). When observed in the discharge direction (14), the separating device includes a plurality of separating elements (32) arranged side by side and capable of being individually controlled by the control unit (30). When the separating elements are controlled, they are configured to provide an impulse for changing the direction of the harvested product moving away from the discharge belt (12) during operation.

4. The root and tuber crop separating device according to any one of the preceding claims, characterized in that, The spacing between the separating rollers arranged above the feed belt is equal.

5. The root and tuber crop separation device according to any one of the preceding claims, characterized in that, The spacing between at least two adjacent distribution rollers (26) is different.

6. The root and tuber crop separating device according to claim 5, characterized in that, The spacing between respectively adjacent distribution rollers (26) increases as it is farther away from the feed belt (10).

7. The root crop separating device according to claim 6 and including the root crop separating device of claim 3, characterized in that, When observed in the discharge direction (14), the width of the separating element (32) increases as the spacing from the feed element (10) increases.

8. The root and tuber crop separating device according to any one of the preceding claims, characterized in that, The rotation axes (25, 27) of at least a part of the rollers are oriented at a right angle with respect to the belt plane.

9. The root and tuber crop separating device according to any one of the preceding claims, characterized in that, In a top view, the rotation axes (25) of the rollers above the feed belt (10) are arranged along a straight line (38), and / or in a top view, the rotation axes (27) of the rollers above the discharge belt (12) are arranged along a straight line (38).

10. The root and tuber crop separation device according to claim 9, characterized in that, The rotation axes (25, 27) of the rollers on the feed belt (10) and the discharge belt (12) are arranged along a line (38).

11. The root crop separating device according to any one of the preceding claims, characterized in that, The turning axis (20) of the feed belt (10) and the turning axis (22) of the discharge belt (12) extend in parallel.

12. The root and tuber crop separation device according to any one of the preceding claims, characterized in that, At least one drive device for the rollers is provided, in particular where the drive device is designed such that during the operation of the rollers, the rotation directions and / or rotation speeds of at least a part of the distribution rollers (24) and the separating rollers (26) are different.

13. The root and tuber crop separation device according to any one of the foregoing claims, characterized in that, The roller is supported at its upper end in at least one holding device, in particular at least a part of the roller being configured to be height-adjustable and / or tilt-adjustable by means of the holding device.

14. Root crop harvester, especially potato digger, characterized in that, The root crop harvester has a root crop separating device according to any one of the preceding claims.

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