Pick-up attachment for a harvesting machine

Abstract

The invention relates to a pick-up attachment for a harvesting machine.

Description

[0001] Pick-up attachment for a harvester

[0002] The invention relates to a pick-up attachment for a harvesting machine, preferably for a forage harvester, in particular for a self-propelled forage harvester, comprising a pickup rotor with pickup tools for picking up crop from the ground, wherein the pickup rotor is connected to at least one guide element resting on the ground, which guides the pickup rotor and guides it to the ground.

[0003] Forage harvesters are harvesting machines used for harvesting and gathering crops, cutting crops into short, parallel lengths, and conveying the chopped material into containers or separate vehicles. Typical crops include grasses, stalk-like crops such as alfalfa or field grass, pulses, mixtures, and / or row-cropped crops such as corn or millet. The chopped material can either be fed directly to livestock as fodder or stored for silage or drying to be later fed to livestock as fodder. The forage harvester can harvest the crop directly by cutting across its entire width or from single or multiple rows, or by gathering it from the swath. Forage harvesters can be tractor-mounted, tractor-trailed, or self-propelled.

[0004] A harvesting header is a usually removable device for picking up the crop into the forage harvester. A pick-up header is specifically a device for picking up previously cut crop. The crop can be laid in rows or swaths.

[0005] When harvesting these crops, maintaining high crop and thus feed quality is extremely important. Harvest cleanliness has a significant impact on the silage process and, when the harvest or silage is used as feed, on animal health, life expectancy, and thus also on milk production and meat yield.

[0006] Furthermore, the wear and tear of the harvesting machines that process the crop, such as the chopping blades of forage harvesters, is significantly reduced if the crop can be collected with as little contamination as possible.

[0007] An optimally adjusted raking height is crucial for a gentle and clean collection of the crop.

[0008] The raking height is understood to be the distance between the raking point and the ground, whereby the raking point is located at the point where the envelope curve of the collecting tools, in particular the collecting tines or raking tines, of the collecting rotor has the smallest distance to the ground.

[0009] The raking height should always be set so that the crop can be completely picked up from the ground, i.e., without loss, and fed to the harvester, especially the forage harvester. It is important that the picking tools, especially the picking tines, of the picking rotor do not penetrate the soil or turf, thereby introducing contaminants into the crop and thus into the forage.

[0010] If the raking height is set too high, the harvesting tools, especially the tines, will no longer completely collect the crop from the ground. Crops remain on the field, reducing the yield and inhibiting further growth of crops, such as grass.

[0011] If the raking height is set too low, the pick-up tools, especially the pick-up tines, will dig into the soil, especially the turf. This results in increased crop and forage contamination, damage to the soil, especially the turf, and increased wear on the harvesting header and harvesting machine, especially forage harvesters, leading to breakage of the pick-up tools, especially the pick-up tines, the pick-up rotor, or further damage to the pick-up header and / or harvesting machine.

[0012] Adjusting and maintaining the raking height is therefore a very important factor for increasing crop or forage quality and for reducing damage to the field, the soil or turf, the pick-up attachment and / or the harvester.

[0013] The raking height must therefore be checked regularly and adjusted based on changing conditions, such as soil contour, cutting height, crop condition, etc.

[0014] Conventional pick-up attachments are guided to the ground by guide elements, namely feeler wheels or feeler skids. Such guide elements are arranged outside the pickup rotor. In some cases, a third guide element, namely a guide wheel or a guide skid, is also arranged centrally behind the pickup rotor.

[0015] With these pick-up attachments, the raking height is adjusted decentrally by adjusting the height of the outer guide elements, in particular the outer feeler wheels. Decentralized means that each guide element, for example each feeler wheel, is moved manually via a hole pattern or clamping rails and thus adjusted and fixed in height, or adjusted in height using a threaded spindle. To do this, the harvester driver usually has to leave the operator's stand or cab, get off the harvester and manually adjust the height of each guide element and thus the raking height on each guide element. In addition, the driver or operator adjusting the height mustThe operator must ensure that the adjustments to the guide elements, particularly the two outer feeler wheels, and particularly the guide elements located to the left and right of the pickup rotor of the pick-up attachment, are made evenly, so that all pickup tools, especially the pickup tines, are at the same distance from the ground. It is also common practice on pick-up attachments for forage harvesters to have the guide elements located to the side of the pickup rotor height adjustable via hydraulic cylinders. Each guide element has its own hydraulic cylinder for this purpose. To set the same raking height, the hydraulic cylinders must be synchronized.

[0016] In pick-up attachments for belt rakes, guidance is provided by skids located below the cross conveyor element of the pick-up attachment, which are separately mechanically adjustable. Another known guidance method is via feeler wheels or chassis located below the cross conveyor of the pick-up attachment, which are separately mechanically adjustable. Another known guidance method is via wheels located behind the cross conveyor element of the pick-up attachment, which are mechanically or hydraulically adjustable.

[0017] In the case of pick-up attachments for balers and loader wagons, guidance is provided by feeler wheels or feeler skids which are arranged to the side of the pick-up attachment, whereby the basic position of the feeler wheels or feeler skids can be adjusted separately mechanically.

[0018] Harvesting capacity is a key factor for high forage quality, particularly in grass silage. After mowing, the meadows and fields must be cleared within a short time frame so that, for example, the green fodder can be ensiled with an optimal dry matter content. This puts the harvester driver under extreme time pressure throughout the harvesting chain. There is hardly any time to check the machine settings every time a plot or area is changed and, if necessary, to adjust them to the changing and current conditions, such as soil contour, cutting height, crop quality, etc., especially if the necessary settings have to be made decentrally and therefore manually outside the driver's cab.In addition, especially during grass harvesting, the areas to be harvested are frequently changed due to the high impact, so regular checking and adjustment of the raking height is very important for forage quality.

[0019] In summary, this means that the optimal raking height adjustment is a key factor for gentle and clean crop collection, significantly impacting forage quality and thus milk and meat yields, as well as animal welfare. Furthermore, reducing dirt ingress into the crop reduces wear and damage to parts of the pick-up attachment and the harvester.

[0020] Therefore, the raking height should be checked and adjusted every time you change plots or areas.

[0021] Current solutions for adjusting the raking height on conventional pick-up attachments require a high level of attention from the harvester driver. The disadvantage is that the driver has to leave the cab to adjust the raking height and manually adjust the corresponding guide elements on both sides of the pick-up attachment. This is time-consuming. In addition, frequent and therefore equally time-consuming checks of the raking height are necessary to ensure that all pickup tools, in particular the pickup tines, of the pickup rotor are at the same optimal distance from the ground. If the pickup or raking result is not satisfactory after the adjustment has been made and the harvest has been completed for a certain distance, time-consuming readjustment may be necessary. This time is often not available because plots or areas are changed very frequently and time pressure is high, particularly with grass silage.This inevitably leads to the rake height not being checked or adjusted, or not being checked or adjusted often enough.

[0022] Based on this prior art, the object of the invention is to provide an improved pick-up attachment which, in particular, overcomes the aforementioned disadvantages and, in particular, improves the adjustment and maintenance of the raking height.

[0023] This object is achieved in a pick-up attachment by the features of claim 1. Further developments and advantageous embodiments of the invention emerge from the subclaims.

[0024] The pick-up attachment according to the invention for a harvesting machine, preferably for a forage harvester, in particular a self-propelled forage harvester, comprises a pickup rotor with pickup tools for picking up crop from the ground, wherein the pickup rotor is connected to at least one guide element resting on the ground, which guides the pickup rotor and guides it to the ground.

[0025] The pick-up attachment according to the invention for a harvesting machine, preferably for a forage harvester, in particular a self-propelled forage harvester, comprises a pickup rotor with pickup tools, in particular pickup tines, which can also be referred to as raking tines, for picking up crop from the ground, wherein the pickup rotor is connected to at least one guide element resting on the ground, preferably a sliding plate, which guides the pickup rotor and guides it to the ground. According to the invention, in order to adjust the raking height, the pick-up attachment can be tilted towards and away from the ground about an axis of rotation running transversely to the direction of travel by a predeterminable angle in such a way that the support point of at least one guide element shifts during tilting, whereby the position of at least one area of ​​the pickup rotor and thus the distance of at least one pickup tool or tool located in this area changes.whose reference point to the ground changes.

[0026] The support point of the guide element is the point at which the guide element comes into contact with the ground.

[0027] The raking point is located at the point where the envelope curve of the collecting tools, in particular the collecting tines or raking tines, of the collecting rotor has the smallest distance to the ground.

[0028] The raking height is the distance between the raking point and the ground.

[0029] The pick-up attachment with intake rotor is driven by the harvesting machine, in particular by the forage harvester, in a push-pull motion. The pick-up attachment is therefore not pulled by the harvesting machine, in particular by the forage harvester, but pushed. For the inventive tilting of the pick-up attachment and thus adjustment of the raking height, the rotation axis is preferably positioned close to the ground. By tilting the pick-up attachment around the rotation axis, the raking height can be easily changed and thus adapted to changing or currently encountered conditions, such as soil contour, cutting height, nature of the crop, etc. This allows an optimal raking height to be set at any time during harvesting, ensuring gentle and clean harvesting of the crop, which then has a positive effect on forage quality and thus on milk and meat yields as well as animal welfare.Another advantage is that less dirt is introduced into the crop and wear and damage to parts of the pick-up attachment and the harvester are reduced.

[0030] The guide elements which guide the receiving rotor, guide it to the ground and have contact with the ground are preferably guide plates or sliding plates or the like.

[0031] Preferably, the tilting of the pick-up attachment, i.e. the angle adjustment of the pick-up attachment to the harvester, and thus the adjustment of the raking height, can be carried out centrally, i.e. in one step or from one location, in particular from the driver's position or cab. Compared to the state of the art, such central operation simplifies the setting of the desired raking height, shortens the adjustment time and improves handling, so that the raking height can be adjusted quickly, reliably and conveniently and adapted to changing or currently encountered conditions, both when changing plots or areas and within a field. This ensures consistently high forage quality while simultaneously ensuring gentle and clean collection of the harvested material.

[0032] It can be advantageous if an adapter frame is provided which, on the one hand, is connected to the machine frame of the pick-up attachment via the rotation axis and, on the other hand, has at least one attachment point for receiving the pick-up attachment by the harvesting machine, wherein the machine frame of the pick-up attachment can be tilted relative to the adapter frame and thus to the harvesting machine connectable to the adapter frame. The adapter frame is a frame that is attached to the machine frame of the pick-up attachment. The pick-up attachment is received and carried by the harvesting machine via this adapter or attachment frame. The harvesting machine can therefore also be referred to as a carrier vehicle.

[0033] It may be advantageous if the rotation axis is aligned horizontally to the ground level in a neutral position of the pick-up attachment.

[0034] It can be advantageous if the rotation axis is positioned at the level of the pick-up attachment's transfer floor. This prevents unwanted relative movements or changes in the transfer geometry between the pick-up attachment and the harvesting vehicle.

[0035] It may be advantageous if at least one, preferably several actuators, in particular hydraulic cylinders, linear motors and / or threaded spindles, are provided above and at a distance from the axis of rotation, i.e. on the side of the axis of rotation facing away from the ground, which actuators are arranged transversely to the direction of travel and spaced apart from one another, which couple the adapter frame to the machine frame of the pick-up attachment.

[0036] By changing the length of the actuators, the pick-up attachment is tilted around the axis of rotation relative to the adapter frame and thus to the harvester. The resulting change in angle interacts with the guide elements of the pick-up attachment, thereby changing the raking height. Depending on the specified change in length of the actuators, different tilt angles can be set, whereby the change in length of the actuators causes a change in the raking height. It can be advantageous if the predeterminable tilt angle of the pick-up attachment or its machine frame relative to the adapter frame and thus relative to the harvester can be initiated, adjusted and / or regulated, preferably automatically, by means of at least one actuator, from a central location, preferably from the driver's cab or the driver's cab of the harvester.

[0037] It may be advantageous if the at least one guide element, which is preferably a guide plate or sliding plate, is arranged at a distance from the receiving rotor in front of or preferably behind the center point or the center axis of the receiving rotor, as seen in the direction of travel.

[0038] The pick-up attachment is guided to the ground via the guide elements. The guide elements, preferably guide plates or sliding plates, are therefore located at a distance in the direction of travel of the pick-up attachment in front of or preferably behind the center point of the pickup rotor. In the latter variant in particular, a lever relationship arises between the support point of the guide elements and the raking point of the pickup tools, in particular the pickup tines or raking tines, of the pickup rotor. The support point of the guide elements is - as already described - the point at which the guide elements come into contact with the ground. The raking point is at the point where the envelope curve of the pickup tools, in particular the pickup tines or raking tines, of the pickup rotor is at the closest distance to the ground.Due to the previously described change in the angle of the machine frame of the pick-up attachment relative to the harvesting machine, which in this case can also be referred to as the carrier vehicle of the pick-up attachment, the pick-up attachment rolls towards the ground via its guide elements. Due to the aforementioned lever ratio, a change in the height of the raking point is caused. Thus, the change in length of the actuators in interaction with the underlying pivot point of the machine frame of the pick-up attachment creates a change in the angle of the pick-up attachment relative to the adapter frame or harvesting machine. This change in angle is used to achieve a change in the height of the raking point relative to the ground, the so-called raking height change, via the lever ratio resulting from the spacing between the support point of the guide elements and the raking point of the picking tools, in particular the picking tines.

[0039] It may be advantageous if the at least one actuator for adjusting the rake height can be changed or moved electrically, hydraulically and / or mechanically in length.

[0040] It may be advantageous if the at least one actuator is electrically and / or hydraulically controllable and / or adjustable, preferably centrally from the driver's cab or driver's cab of the harvesting machine.

[0041] For some applications, it may be advantageous if at least one actuator can be adjusted mechanically, either directly or indirectly, in a decentralized manner, preferably via a threaded spindle. Such adjustability is cost-effective.

[0042] It can be advantageous to arrange several spaced-apart guide elements behind the pick-up rotor and perpendicular to the direction of travel. This allows for further optimization of the uniform adjustment of the raking height of the pick-up tools, especially the pick-up tines, perpendicular to the direction of travel.

[0043] It can be advantageous if the pickup rotor is composed of several segments, at least partially connected by hinges, to adapt to the soil contours. Preferably, it is flexible across the entire working width. This allows for even adjustment of the raking height of the pickup tools, especially the pickup tines, to be further optimized for varying soil contours across the direction of travel.

[0044] The fact that the pickup rotor of the pick-up attachment is made up of several segments that are at least partially connected to one another by hinges means that the pickup rotor is also flexible across the direction of travel, which means that it can adapt better to the ground contour. This makes it possible for the pickup rotor to at least partially adapt to the contour of the depression when driving over a depression or, conversely, to the contour of the elevation when driving over a rise. The pickup rotor essentially sags downwards at the relevant point or, conversely, arches upwards at the relevant point. Because the pickup rotor adapts to the contour of the terrain, the pickup rotor and thus the pickup tools, in particular the raking tines, in conjunction with the previously described raking height adjustment, can be guided at an optimal distance from the turf for picking up the crop.This prevents crop losses, as the crop is reliably collected even in dips in the terrain. It also prevents the pickup tools, especially the pickup tines, from aggressively combing through the turf. Since this protects the turf and prevents dirt such as sand or soil from being picked up, contamination of the crop and thus the forage is avoided, and forage quality is increased. The flexibility of the pickup rotor thus ensures high crop and therefore forage quality with minimal crop losses. Furthermore, increased wear on both the pick-up attachment and the harvester is avoided.

[0045] As already explained, it can be advantageous to provide several guide elements distributed across the working width of the pick-up attachment, which guide the pickup rotor and / or guide it to the ground. Preferably, no guide elements are provided that are arranged laterally next to the pickup rotor.

[0046] It may be advantageous if at least one sensor is provided which detects a parameter relevant for the raking height adjustment, for example the raking accuracy or the crop contamination, and converts it into an electrical signal which, after defining appropriate boundary conditions, can be used to control or regulate, in particular, the actuators, whereby the raking height can be controlled or regulated automatically and permanently.

[0047] It can be advantageous if the boundary conditions can be prioritized differently in order to define different control or regulation characteristics.

[0048] It may be advantageous to provide at least one detector, in particular at least one sensor bar, that detects the raking height and converts it into an electrical signal that can be used to control or regulate the actuators, whereby the raking height can be automatically maintained at a constant, predefined value or controlled or regulated to a variable value. This allows the raking height to be kept constant even with changes in the ground contour, such as depressions or hills.

[0049] It may be advantageous if the at least one detector, in particular the at least one sensing bracket, detects the raking height at the level of the raking point.

[0050] It can be advantageous to have a display, preferably mechanical, on the frame of the pick-up attachment to indicate the current raking height. It can be advantageous if the current raking height can be determined or queried via sensors on the frame, a touch bar, or in the actuators, and can be displayed on a terminal in the driver's cab of the harvester.

[0051] It may be advantageous if at least one memory element is provided in which data on the rake height are stored, which can be called up via quick access, in particular hotkey, or the like, and can be accessed automatically or semi-automatically.

[0052] It can be advantageous if the raking height data refers to upper and / or lower limits. This allows the range of the raking height setting to be limited under certain conditions, for example, to prevent increased dirt ingress into the crop and thus into the forage, or to prevent damage to the pick-up attachment or the harvester.

[0053] After all of this, the following advantages of the invention over the prior art are given:

[0054] • Easy adjustment of the rake height

[0055] • Reduction of the adjustment time of the rake height

[0056] • Increase in the setting accuracy of the rake height

[0057] • Improved handling for adjusting the rake height

[0058] • Relief for the driver

[0059] • Higher crop and therefore feed quality, especially less dirt ingress into the crop and thus into the feed

[0060] • Less wear on the pick-up attachment and the harvester, in particular a lower risk of tine breakage

[0061] • Reduced harvest losses when collecting the crop from the ground due to increased raking quality. Further features of the invention emerge from the claims, the figures, and the description of the figures. All features and combinations of features mentioned above in the description, as well as the features and combinations of features mentioned below in the description of the figures and / or shown alone in the figures, can be used not only in the respective specified combination, but also in other combinations or even on their own.

[0062] The invention will now be explained in more detail using preferred embodiments and with reference to the accompanying drawings. They show:

[0063] Fig. 1 is a schematic perspective view of a pick-up attachment according to the invention with an adapter frame,

[0064] Fig. 2 is a schematic side view of the pick-up attachment according to the invention as shown in Fig. 1,

[0065] Fig. 3 is a schematic side view of a) a pick-up attachment according to the invention with the raking height set to the maximum position and b) a detail from Fig. 3 a),

[0066] Fig. 4 is a schematic side view a) of the pick-up attachment according to the invention as shown in Fig. 3 with the raking height set to the middle position and b) of a detail from Fig. 4 a) and

[0067] Fig. 5 is a schematic side view of a) the pick-up attachment according to the invention shown in Fig. 3 with the raking height set to the center position, and b) a detail from Fig. 5 a). Where the same reference numerals are used in Figs. 1 to 5, they also designate the same parts or areas.

[0068] Fig. 1 and Fig. 2 show schematically, in perspective view and in side view, a pick-up attachment 10 according to the invention for a harvesting machine (not shown here), in particular for a self-propelled forage harvester. The pick-up attachment 10 comprises a pickup rotor 12 with pickup tools 14, which in this case are designed as raking tines, for picking up crop from the ground 16. The pickup rotor 12 is connected to four guide elements 18 resting on the ground 16, which in this case are designed as sliding plates. The guide elements 18 guide the pickup rotor 12 and guide it to the ground 16. The ground 16 typically forms the turf.

[0069] According to the invention, the pick-up attachment 10 can be tilted towards and away from the ground 16 by a predeterminable angle about a rotation axis 20 running transversely to the direction of travel FR in order to adjust the raking height, in such a way that the support point 22 of at least one guide element 18 shifts during tilting, whereby the position of at least one region of the pickup rotor 12 and thus the distance of the raking point 24 from the ground 16 changes. For this purpose, an adapter frame 26 is provided which, on the one hand, is connected to the machine frame 28 of the pick-up attachment 10 via the rotation axis 20 and, on the other hand, has at least one receiving point for receiving the pick-up attachment 10 by the harvesting machine, wherein the machine frame 28 of the pick-up attachment 10 can be tilted relative to the adapter frame 26 and thus to the harvesting machine connectable to the adapter frame 26.

[0070] In a neutral position of the pick-up attachment 10, the rotation axis 20 is aligned horizontally to the plane of the ground 16 and is arranged at the level of the transfer floor 30 of the pick-up attachment 10. Above and spaced from the rotation axis 20, i.e., on the side of the rotation axis 20 facing away from the ground 16, two actuators 32 are arranged transversely to the direction of travel and spaced apart from one another. In this case, these actuators 32 are designed as hydraulic cylinders. In Figures 3-5, the aforementioned actuators 32 are simplified and thus shown as lines for the sake of clarity. The actuators 32 couple the adapter frame 26 to the machine frame 28 of the pick-up attachment 10.

[0071] The tilt angle of the pick-up attachment 10 or its machine frame 28 relative to the adapter frame 26 and thus relative to the harvesting machine is adjustable by means of actuators 32. For this purpose, each actuator 32, in this case hydraulic, can be adjusted in length. This is done from a central location, preferably from the driver's cab of the harvesting machine, with the actuators 32 being electrically and / or hydraulically controlled or regulated.

[0072] The four guide elements 18 are arranged at a distance from the receiving rotor 12, as seen in the direction of travel FR, behind the center point 34 or the center axis of the receiving rotor 12. This creates a lever relationship between the support point 22 of the guide elements 18 and the rake point 24 of the receiving tools 14 of the receiving rotor 12.

[0073] The support point 22 of the guide elements 18 is the point at which the guide elements 18 come into contact with the ground 16. The raking point 24 is located at the point where the envelope curve 36 of the pickup tools 14 of the pickup rotor 12 is at the shortest distance from the ground 16. Due to the change in the angle of the pick-up attachment 10 or the machine frame 28 of the pick-up attachment 10 to the adapter frame 26 and thus to the harvesting machine (not shown here), the pick-up attachment 10 rolls over its guide elements 18 to the ground 16. Due to the aforementioned leverage, a change in the height of the raking point 24 is effected. Thus, the increasing length change of the actuators 32 shown in Figs. 3 a), 4 a) to 5 a) in conjunction with the underlying pivot point 20 of the machine frame 28 of the pick-up attachment 10 produces an angle change of the pick-up attachment 10 relative to the adapter frame 26 or the harvesting machine.The increasing angle change shown in Figs. 3 a), 4 a) to 5 a) is used to obtain a change in the height of the rake point 24 relative to the ground 16, the so-called rake height change, via the lever ratio resulting from the spacing 38 between the support point 22 of the guide elements 18 and the rake point 24 of the receiving tool 4. Figs. 3 b), 4 b) and 5 b) show the resulting distance 38 between the support point 22 of the guide elements 18 and the rake point 24 of the receiving tool 4 and the associated change in the height of the rake point 24 relative to the ground 16 in more detail.

[0074] List of reference numbers

[0075] 10 Pick-up attachment

[0076] 12 Pick-up rotor

[0077] 14 Recording tool

[0078] 16 Floor

[0079] 18 Guide element

[0080] 20 axis of rotation

[0081] 22 support point

[0082] 24 billing points

[0083] 26 adapter frames

[0084] 28 machine frames

[0085] 30 transfer floor

[0086] 32 Actuator

[0087] 34 Center

[0088] 36 Envelope

[0089] 38 distance

[0090] FR direction of travel

Claims

Patent claims 1. Pick-up attachment (10) for a harvesting machine, preferably for a forage harvester, comprising a pickup rotor (12) with pickup tools (14) for picking up crop from the ground (16), wherein the pickup rotor (12) is connected to at least one guide element (18) resting on the ground (16), which guides the pickup rotor (12) and directs it towards the ground (16), characterized in that the pick-up attachment (10) can be tilted about a pivot axis (20) extending transversely to the direction of travel (FR) by a predefinable angle towards and away from the ground (16) to adjust the raking height, such that the support point (22) of at least one guide element (18) shifts during tilting, thereby changing the position of at least one area of ​​the pickup rotor (12) and thus the distance of at least one pickup tool (14) located in this area or the raking point (24) to the ground (16). The ground (16) changes.

2. Pick-up attachment (10) according to claim 1, characterized in that an adapter frame (26) is provided which is connected on the one hand to the machine frame (28) of the pick-up attachment (10) via the axis of rotation (20) and on the other hand has at least one receiving point for receiving the pick-up attachment (10) by the harvesting machine, wherein the machine frame (28) of the pick-up attachment (10) is tiltable relative to the adapter frame (26) and thus to the harvesting machine that can be connected to the adapter frame (26).

3. Pick-up attachment (10) according to claim 1 or 2, characterized in that the axis of rotation (20) is aligned horizontally to the plane of the ground (16) in a neutral position of the pick-up attachment (10).

4. Pick-up attachment (10) according to one of the preceding claims, characterized in that the axis of rotation (20) is arranged at the level of the transfer floor (30) of the pick-up attachment (10).

5. Pick-up attachment (10) according to one of the preceding claims, characterized in that at least one, preferably several actuators (32), in particular hydraulic cylinders, linear motors and / or threaded spindles, arranged transversely to the direction of travel and spaced apart from each other, are provided above and spaced apart from the axis of rotation (20), i.e. on the side of the axis of rotation (20) facing away from the ground (16), which couple the adapter frame (26) with the machine frame (28) of the pick-up attachment (10).

6. Pick-up attachment (10) according to one of the preceding claims, characterized in that the predefinable tilting angle of the pick-up attachment (10) or its machine frame (28) relative to the adapter frame (26) and thus relative to the harvesting machine is preferably adjustable from a central location, preferably from the driver's seat of the harvesting machine, by means of at least one actuator (32).

7. Pick-up attachment (10) according to one of the preceding claims, characterized in that at least one guide element (18) is arranged spaced apart from the receiving rotor (12) in the direction of travel (FR) in front of or preferably behind the center point (34) or the central axis of the receiving rotor (12).

8. Pick-up attachment (10) according to one of the preceding claims, characterized in that the at least one actuator (32) is electrically, hydraulically and / or mechanically variable in length.

9. Pick-up attachment (10) according to one of the preceding claims, characterized in that the at least one actuator (32) is electrically and / or hydraulically controllable and / or adjustable.

10. Pick-up attachment (10) according to one of the preceding claims, characterized in that the at least one actuator (32) is decentrally adjustable directly or indirectly mechanically, preferably by means of a threaded spindle.

11. Pick-up attachment (10) according to one of the preceding claims, characterized in that several spaced-apart guide elements (18) are arranged behind the pickup rotor (12) and transversely to the direction of travel (FR).

12. Pick-up attachment (10) according to one of the preceding claims, characterized in that the pickup rotor (12) is composed of several segments that are at least partially articulated to adapt to the contours of the ground (16) and is preferably flexible over the entire working width.

13. Pick-up attachment (10) according to one of the preceding claims, characterized in that at least one sensor is provided which detects a parameter relevant for the raking height setting, for example the raking accuracy or crop contamination, and converts it into an electrical signal which, after definition of appropriate boundary conditions, can be used to control or regulate the actuators (32), whereby the raking height can be controlled or regulated automatically and permanently.

14. Pick-up attachment (10) according to one of the preceding claims, characterized in that the boundary conditions can be prioritized differently in order to define different control or regulation characteristics.

15. Pick-up attachment (10) according to one of the preceding claims, characterized in that at least one detector, in particular at least one sensing bar, is provided which detects the height and converts it into an electrical signal which can be used to control or regulate the actuators (32), whereby the height is automatically kept at a constant predetermined value or can be controlled or regulated to a variable value.

16. Pick-up attachment (10) according to one of the preceding claims, characterized in that the at least one detector, in particular the at least one sensing bar, detects the pitch height at the pitch point.

17. Pick-up attachment (10) according to one of the preceding claims, characterized in that a preferably mechanical display is arranged on the machine frame (28) of the pick-up attachment (10) which indicates the current rake height.

18. Pick-up attachment (10) according to one of the preceding claims, characterized in that the current raking height can be determined or queried via sensors on the machine frame (28), via tactile bars or in the actuators (32) and can be displayed on a terminal in the driver's cab of the harvesting machine.

19. Pick-up attachment (10) according to one of the preceding claims, characterized in that at least one storage element is provided in which data on the elevation are stored, which can be retrieved by quick access, in particular hotkey, or the like, and can be approached automatically or semi-automatically.

20. Pick-up attachment (10) according to one of the preceding claims, characterized in that data relating to the height of the load relate to upper and / or lower limit values.

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