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 sorghum. 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 full width, 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 harvested crop or silage is used as feed, on animal health, animal life expectancy, and thus also on milk yield and meat yield. Furthermore, wear on the harvesting machinery that processes the crop, such as the chopping blades of forage harvesters, is significantly reduced if the harvested crop can be collected with as little contamination as possible.

[0006] The decisive factor for a gentle and clean collection of the harvested material is an optimal adjustment of the raking height or the distance of the collection tools, in particular the collection tines or raking tines, to the ground, in particular the arable soil, or to the turf.

[0007] The raking height is understood to be the distance between the raking point and the ground or turf, 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 or turf.

[0008] The raking height or the distance of the collecting tools from the ground should always be adjusted so that the crop can be collected completely, i.e., without loss, from the ground and fed to the harvester, especially the forage harvester. It is important that the collecting tools, especially the collecting tines of the collecting rotor, do not penetrate the soil or turf, thereby introducing contaminants into the crop and thus into the forage.

[0009] If the raking height is set too high or the distance between the collecting tools and the ground is too great, the collecting tools, especially the tines, will no longer completely collect the crop from the ground. Crops remain on the ground and thus in the field, reducing the yield and inhibiting further growth of crops, such as grass.

[0010] If the raking height is set too low or the distance between the pick-up tools and the ground is too small, the pick-up tools, especially the pick-up tines, will dig into the soil or the turf. This results in increased crop and forage contamination, damage to the soil, especially the turf, and increased wear on the pick-up attachment and the harvesting machine, especially the forage harvester. This can lead to breakage of the pick-up tools, especially the pick-up tines, the pick-up rotor, or other damage to the pick-up attachment and / or the harvesting machine.

[0011] Adjusting and maintaining the raking height and the distance of the collecting tools from the ground or turf is therefore a very important factor for improving crop and forage quality, as well as for reducing damage to the field, the soil or turf, the pick-up attachment, and / or the harvester. Adjusting and maintaining the raking height and the distance of the collecting tools from the ground or turf is particularly important for pick-up attachments that have a large working width oriented transversely to the direction of travel.

[0012] In addition to the option provided on the forage harvester and the pick-up attachment to adjust the height guide of the pick-up attachment in order to adjust the raking height uniformly across the entire working width, the raking height should also be adjustable within the working width, i.e. transversely to the direction of travel, to changes in the soil contour or to an uneven turf.

[0013] Known pick-up attachments for forage harvesters comprise a rigid, roller-like pickup rotor with pickup tools for picking up crop from the ground. The rigid, roller-like pickup rotor is guided to and over the ground by guide elements, namely feeler wheels or feeler skids. Such guide elements are arranged outside the pickup rotor, i.e., outside the effective working width. The roller-like pickup rotor forms a rigid, cylindrical body that extends between the two guide elements. This type of pick-up attachment design, or such a rigid, roller-like pickup rotor, has the disadvantage in hilly terrain—i.e., uneven terrain that has different heights, depths, irregularities, or shapes across the width of the pickup rotor—that the raking height cannot be adjusted to the uneven ground contour within the working width of the pick-up attachment.On the one hand, this has the disadvantage that crops or harvested material are not collected in depressions in the terrain because the collecting tools, in particular the raking tines, of the rigid collecting rotor do not reach the soil or the turf, which leads to crop losses. On the other hand, it is disadvantageous that on elevations the collecting tools, in particular the raking tines, of the rigid collecting rotor aggressively comb through the soil or the turf, which leads to massive crop and therefore forage contamination and thus to a reduction in crop and therefore forage quality, damage to the turf and increased machine wear on both the pick-up attachment and the harvesting machine, in particular the forage harvester, as a lot of dirt, especially sand and soil, is picked up. The aforementioned adverse effects are all the more pronounced the larger the working width of the pick-up attachment.

[0014] Higher feed speeds also increase these disadvantages, since the option provided on the harvesting machine, especially on the forage harvester, for height control of the pick-up attachment works too slowly above a certain forward speed and thus can no longer reliably guide the pick-up attachment to the ground.

[0015] Based on this prior art, the invention is based on the object of improving a pick-up attachment.

[0016] This object is achieved with a pick-up attachment having the features of claim 1. Further developments and advantageous embodiments of the invention emerge from the subclaims.

[0017] The pick-up attachment according to the invention for a harvesting machine, preferably for a forage harvester, particularly preferably for a self-propelled forage harvester, comprises a pickup rotor with pickup tools for picking up crop from the ground, at least one guide element resting on the ground, which guides the pickup rotor and guides it to the ground, and a machine frame connected to the pickup rotor, wherein the pickup rotor is composed of several at least partially articulated segments for adapting to the contours of the ground, and wherein at least one guide system is provided for the movable connection of the pickup rotor, in particular a segment of the pickup rotor, to the machine frame of the pick-up attachment.The fact that the pickup rotor of the pick-up attachment is composed of several segments, some of which are at least partially articulated, makes the pickup rotor flexible, allowing it to adapt to the ground contours. This makes it possible for the pickup rotor to at least partially adapt to the contours of the depression when driving over a depression, or conversely to the contours of the elevation when driving over a rise. The pickup rotor either sags downwards at the relevant point, or conversely, arches upwards at the relevant point. The flexible design of the pickup rotor of the pick-up attachment makes it possible to increase the working width of the pick-up attachment and thus improve the collection capacity. Pick-up attachments designed in this way are particularly suitable for larger working widths in hilly terrain.Because the pickup rotor adapts to the contours of the terrain, the pickup rotor and therefore the pickup tools, especially the raking tines, can be guided at an optimal distance from the turf to collect 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 raking tines, from aggressively combing through the turf. As this protects the turf and does not pick up dirt such as sand or soil, contamination of the crop and therefore the forage is avoided, and the crop and therefore the forage quality is increased. The flexibility of the pickup rotor therefore ensures high forage quality with low harvest losses. It also prevents increased machine wear on both the pick-up attachment and the harvesting machine, especially the forage harvester.Even an increase in the working speed of the harvester, in particular the forage harvester, and thus of the pick-up attachment is possible thanks to the flexible pickup rotor, increasing the pickup capacity. The pickup rotor is preferably flexible across the entire working width. This can be ensured by numerous articulated segments. The flexibility of the pickup rotor across the entire working width enables optimal crop pickup, even when the pick-up attachment is simultaneously guided over at least one depression and / or at least one elevation in the hilly terrain. This ensures overall high forage quality with low harvest losses. Preferably, several guide elements are provided distributed across the working width of the pick-up attachment, which guide the pickup rotor and / or guide it to the ground.Guide elements arranged laterally next to the collecting rotor are preferably not provided. It may be advantageous if the guide elements, preferably sliding plates, are arranged below and / or directly behind the collecting rotor and / or within its effective working width. This allows the collecting rotor to adapt to the contours of the terrain across its entire working width.

[0018] By providing at least one guide system for the movable or flexible connection of the pickup rotor, in particular of a segment of the pickup rotor, to the machine frame of the pick-up attachment, an additional relative movement, for example a type of vertical up and down movement, is permitted between the pickup rotor and the machine frame of the pick-up attachment, so that the ground adaptation of the pick-up attachment is significantly improved. This inventive combination of a flexible pickup rotor and the at least one guide system for the movable orThe flexible connection of the pickup rotor, particularly a segment of the pickup rotor, to the machine frame of the pick-up attachment is particularly advantageous in very hilly terrain and at high feed speeds, since the known systems on harvesters, especially on forage harvesters, for adjusting the height of the pick-up attachment, which are designed as ground pressure controls, reach their limits at high feed speeds. In this case, the flexible pickup rotor adapts directly and reactively to the soil undulation.

[0019] The guide system according to the invention is designed such that it absorbs thrust and pressure forces in or against the direction of travel of the pick-up attachment, which can be introduced into the guide system by the guide elements, in particular sliding plates, or by the pick-up rotor.

[0020] Furthermore, the guide system according to the invention is designed to transfer horizontal torques resulting from the contact of the pickup rotor or the guide elements, in particular the sliding plates, with the crop or the ground, as well as vertical torques resulting from transverse forces from the guide elements, in particular the sliding plates, during cornering of the pick-up attachment, to the machine frame. At the same time, the guide system ensures a degree of freedom within which the pickup rotor or at least one segment of the pickup rotor can swing up and down, thus enabling the desired movement or flexibility between the pickup rotor and the machine frame.

[0021] The use of a guide system for the movable or flexible connection of the pickup rotor and the machine frame has the advantage of requiring relatively little installation space within the pick-up attachment for harvesting machines such as forage harvesters, loader wagons, or balers. A guide system thus enables a compact design of the pick-up attachment and ensures that other functions of the pick-up attachment, such as the folding mechanism for folding the machine frame of the pick-up attachment to a specified transport width or for unfolding the machine frame of the pick-up attachment to a specified working width, are not compromised.

[0022] It can be advantageous if the guide system has a first guide means, preferably a guide slot or a guide rail, which is fixedly connected to the machine frame, and a second guide means, preferably a guide carriage, guide carriage or the like, which is fixedly connected to the receiving rotor, in particular to a segment of the receiving rotor, wherein the first and the second guide means are connected to one another and can be moved relative to one another along a guide or track, in particular up and down, i.e. away from the ground and towards the ground.

[0023] It can be advantageous if the guidance system is a linear guidance system.

[0024] It may be advantageous to provide several guide systems spaced apart across the working width of the receiving rotor. It may be advantageous if the number of guide systems corresponds to the number of guide elements, preferably provided within the working width of the receiving rotor. For some applications, the number of guide systems may also be fewer than the number of guide elements, preferably provided within the working width of the receiving rotor.

[0025] It can be advantageous if each guide system is centrally assigned to a guide element, in particular a sliding plate.

[0026] It may be advantageous if the guide system is designed as a sliding guide with at least one sliding bearing element or as a rolling guide with at least one rolling bearing element.

[0027] It may be advantageous if the rolling guide is a profiled link or profiled rail guide in which rolling elements, in particular balls or rollers, roll between the first guide means and the second guide means on a guide or raceway, or if the rolling guide is a track roller guide in which roller-bearing mounted track rollers roll between the first guide means and the second guide means on a guide or raceway.

[0028] It can be advantageous if one or more rollers, preferably four rollers, are arranged on the guide carriage, of which an upper and a lower roller are supported in a left and a right guide or track of the guide link, viewed in or against the direction of travel of the pick-up attachment.

[0029] Such a geometric arrangement of the rollers or plain and / or rolling bearing elements ensures particularly stable load transfer as well as smooth running and process reliability when guiding the receiving rotor. It can be advantageous if the vertical and / or horizontal spacing of the rollers in the guide system is as large as technically possible.

[0030] Such a geometric arrangement of the rollers or the plain and / or rolling bearing elements ensures particularly stable load introduction as well as high running smoothness and process reliability when guiding the receiving rotor.

[0031] It can be advantageous if the distance between the lower rollers and the support point of the guide element, in particular a sliding plate, is chosen to be as small as technically possible in the vertical direction.

[0032] The support point of the guide element, in particular the sliding plate, is the point at which the guide element, in particular the sliding plate, comes into contact with the ground.

[0033] Such a geometric arrangement of the rollers or the plain and / or rolling bearing elements ensures particularly stable load introduction as well as high running smoothness and process reliability when guiding the receiving rotor.

[0034] It may be advantageous if the guide system, preferably the guide slot and / or the guide carriage, has one or more stops for limiting the movement between the guide means, wherein preferably at least one upper and at least one lower stop limit the guide or track.

[0035] The stops engage stop surfaces provided on the machine frame and / or at least one guide device. This determines the upper and lower end positions of the flexible receiving rotor or the guide system connected to it.

[0036] Segment of the receiving rotor. It may be advantageous if the stops are interchangeable, have different designs and / or are adjustable in different ways, preferably attachable, in particular screwable, at different positions of the guide systems.

[0037] This allows the end positions of the flexible pick-up rotor or segment of the pick-up rotor connected to the guide system to be individually defined on each guide system, i.e. in particular the distance for a complete up and down movement can be individually defined and limited differently on each guide system via the working width of the pick-up rotor.

[0038] It may be advantageous if the stops are designed as stop dampers or stop buffers and / or as fixed stops or as a combination of damping and fixed stops.

[0039] It may be advantageous if the stops or end positions of the guide systems arranged further towards the centre of the pick-up attachment are selected and arranged in such a way that the movement between the guide means is more limited than between the guide means of the guide systems arranged further out.

[0040] This allows a uniform and homogeneous deflection of the flexible receiving rotor to be set, which in turn has a significant influence on the longevity of the rotor shaft.

[0041] It may be advantageous if each linear guide system is adjustable so that its guideway or track is arranged vertically and / or in a different direction or at a different angle to the ground.

[0042] Depending on the arrangement, the performance of ground tracking can be advantageously modified. For example, if one or more guidance systems are arranged so that the segments of the flexible pickup rotor can deflect upwards and backwards simultaneously, i.e., against the direction of travel, the self-locking and ground pressure of the guidance elements, particularly the sliding plates, are advantageously reduced. It can be advantageous if a central guidance element, particularly a central guide slot, particularly a continuous pressure plate or contact surface, is fixed or integrated into the machine frame in a fixed position and preferably in one piece.

[0043] Guide means that are advantageously fixed to the receiving rotor or to predetermined segments of the receiving rotor can be supported thereon and can interact with it to create a movable or flexible connection between the receiving rotor and the machine frame, preferably in such a way that the load introductions and degrees of freedom described above are created.

[0044] After all of this, the following advantages of the invention over the prior art are given:

[0045] • Better ground adaptation, especially with larger working widths and forward speeds of the pick-up attachment

[0046] • higher crop and therefore feed quality, as less dirt gets into the crop and thus into the feed

[0047] • less wear on the pick-up attachment and the subsequent harvesting machine

[0048] • Reduction of the risk of breakage of the holding tools, especially the rake tines

[0049] • Reduced harvest losses during harvesting by increasing raking quality

[0050] • Compact design of the pick-up attachment for use on harvesting machines such as forage harvesters, loader wagons or presses

[0051] • Low-wear design of the movable or flexible connection between the pickup rotor and the machine frame of the pick-up attachment through the use of roller bearings, plain bearings and / or roller bearing mounted rollers

[0052] • Optimally adjustable deflection and flexibility of the pick-up rotor due to the individual adjustability of the stops • Economical and cost-saving design of the movable or flexible connection between the pick-up rotor and the machine frame of the pick-up attachment as a linear guide system

[0053] 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.

[0054] The invention will now be explained in more detail using preferred embodiments and with reference to the accompanying drawings. They show:

[0055] Fig. 1 is a schematic perspective front view of a foldable pick-up attachment according to the invention of ,

[0056] Fig. 2 is a schematic perspective rear view of the pick-up attachment according to the invention as shown in Fig. 1,

[0057] Fig. 3 is a schematic side view of the pick-up attachment according to the invention as shown in Fig. 1,

[0058] Fig. 4 is a schematic perspective rear view of a section of the pick-up attachment according to the invention as shown in Fig. 2,

[0059] Fig. 5 is a schematic perspective rear view of a section of the pick-up attachment according to the invention as shown in Fig. 4,

[0060] Fig. 6 is a schematic rear view of the section according to Fig. 5 and Fig. 7 is a schematic side view of a section of the pick-up attachment according to the invention according to Fig. 3.

[0061] If the same reference numbers are used in Figs. 1 to 7, they also designate the same parts or areas.

[0062] Figs. 1 and 2 each show a perspective view of a foldable pick-up attachment 10, one from the front, i.e., opposite the direction of travel FR, and the other from the rear, i.e., in the direction of travel FR. The direction of travel FR, or the forward direction of travel of the pick-up attachment 10, is shown in Fig. 1 and Fig. 3 with an arrow. Fig. 3 schematically shows a side view of the foldable pick-up attachment 10 according to Fig. 1.

[0063] The foldable pick-up attachment 10 for a self-propelled forage harvester (not shown here) comprises a machine frame 20 which carries two machine halves which can be folded apart and together via a folding mechanism.

[0064] Each machine half 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. Each pickup rotor 12 is connected to three guide elements 18 resting on the ground or subsoil, which in this case are designed as sliding plates. The guide elements 18 are arranged, as shown in Fig. 2, directly behind the pickup rotor 12 and within the effective working width of the pickup rotor 12. The guide elements 18 guide the pickup rotor 12 and guide it to the ground 16. The ground 16 usually forms the turf. Furthermore, each machine half has a cross conveyor auger 40 that gathers the picked-up crop and transfers it to the forage harvester as a crop mat.Furthermore, each machine half comprises so-called hold-down devices 42, preferably in the form of rollers, which determine the direction of the crop flow when the crop is conveyed upwards with great acceleration due to the rotating pickup tools 14. The pickup rotor 12 is composed of several segments 22 that are at least partially articulated to adapt to the contours of the ground 16. Individual segments 22 are shown as examples in Figs. 1 and 5. The at least partially articulated segments 22 can be of different or equal widths.

[0065] According to the invention, as clearly shown in Fig. 2, four guide systems 24 are provided for the movable connection of the pickup rotor 12, in particular a segment 22 of the pickup rotor 12, to the machine frame 20 of the pick-up attachment 10. The position of the guide system is indicated in Figs. 2-5 by a border 24. Naturally, the border is not a component of the pick-up attachment 10.

[0066] Each guide system 24 has a guide slot 26 fixedly connected to the machine frame 20 and a guide carriage 28 fixedly connected to the receiving rotor 12, in particular to a segment 22 of the receiving rotor 12. The guide slot 26 and the guide carriage 28 are connected and movable relative to one another along two parallel and spaced-apart guideways or tracks 38, in particular movable up and down, i.e., away from and toward the floor 16.

[0067] The guide system 24 is a linear guide system.

[0068] Each guide system 24 is centrally assigned to a guide element 18, namely a sliding plate.

[0069] The guide system 24 provided here is designed as a roller guide, namely as a profiled guide or, more specifically, as a roller guide, in which roller-bearing rollers 30, as part of the guide carriage 28, roll on the aforementioned guideways or tracks 38 of the guide guide 26. For this purpose, exactly four rollers 30a, 30b, 30c, 30d are arranged on the guide carriage 28, of which an upper and a lower roller are supported in a left and a right guideway or track 38 of the guide guide 26, viewed in or against the direction of travel FR of the pick-up attachment 10. This can be clearly seen in Figs. 5 and 6.

[0070] The guide system 24, in this case the guide carriage 28, has stops 34, 36 for limiting the movement between the guide slot 26 and the guide carriage 28, with preferably at least two upper stops 34 and one lower stop 36 limiting the guide or track 38. The stop surfaces are located on the machine frame 20 and on the guide slot 26. The stops 32, 34 are advantageously designed as stop buffers.

[0071] In the present case, each linear guide system 24, as clearly shown in Fig. 7, is adjusted so that its guideway or track 38 is arranged perpendicular to the floor 16. Different directions or angles can be individually adjusted on each guide system 24 depending on the desired effect.

[0072] List of reference numbers

[0073] 10 Pick-up attachment

[0074] 12 Pick-up rotor

[0075] 14 Recording tool

[0076] 16 Floor

[0077] 18 Guide element

[0078] 20 machine frames

[0079] 22 segments

[0080] 24 guidance system

[0081] 26 Guide scenery

[0082] 28 guide carriages

[0083] 30 roller

[0084] 30a roller (bottom right)

[0085] 30b Roller (top right)

[0086] 30c roller (bottom left)

[0087] 30d roller (top left)

[0088] 32 support point

[0089] 34 Stop (top)

[0090] 36 Stop (bottom)

[0091] 38 Management / Career

[0092] 40 cross conveyor screw

[0093] 42 hold-down clamps

[0094] FR direction of travel

Claims

patent claims 1. Pick-up attachment (10) for a harvesting machine, preferably for a forage harvester, particularly preferably for a self-propelled forage harvester, comprising a pickup rotor (12) with pickup tools (14) for picking up crop from the ground (16), at least one guide element (18) resting on the ground (16) which guides the pickup rotor (12) and directs it to the ground (16), and a machine frame (20) which is connected to the pickup rotor (12), characterized in that the pickup rotor (12) is composed of several segments (22) which are at least partially articulated to adapt to the contours of the ground (16), and that at least one guide system (24) is provided for movably connecting the pickup rotor (12), in particular a segment (22) of the pickup rotor (12), to the machine frame (20) of the pick-up attachment (10).

2. Pick-up attachment (10) according to claim 1, characterized in that the guide system (24) comprises a first guide means, preferably a guide track (26) or a guide rail, which is fixedly connected to the machine frame (20), and a second guide means, preferably a guide carriage (28), guide carriage or the like, which is fixedly connected to the receiving rotor (12), in particular to a segment (22) of the receiving rotor (12), wherein the first and the second guide means are connected to each other and are movable relative to each other along a guide or track (38), in particular up and down, i.e. away from and towards the ground (16).

3. Pick-up attachment device (10) according to claim 1 or 2, characterized in that the guide system (24) is a linear guide system.

4. Pick-up attachment (10) according to claim 1 or 2, characterized in that several guide systems (24) spaced apart from each other over the working width of the pickup rotor (12) are provided.

5. Pick-up attachment (10) according to at least one of the preceding claims, characterized in that the number of guide systems (24) corresponds to the number of guide elements (18) preferably provided within the working width of the pickup rotor (12).

6. Pick-up attachment (10) according to at least one of the preceding claims, characterized in that each guide system (24) is centrally assigned to a guide element (18), in particular a sliding plate.

7. Pick-up attachment device (10) according to at least one of the preceding claims, characterized in that the guide system (24) is designed as a sliding guide with at least one sliding bearing element or as a rolling guide with at least one rolling bearing element.

8. Pick-up attachment device (10) according to at least one of the preceding claims, characterized in that the rolling guide is a profile cam or profile rail guide in which rolling elements, in particular balls or rollers, roll between the first guide means and the second guide means on a guide or raceway (38), or that the rolling guide is a roller guide in which roller-bearing rollers roll between the first guide means and the second guide means on a guide or raceway (38).

9. Pick-up attachment (10) according to at least one of the preceding claims, characterized in that one or more rollers (30), preferably four rollers (30a, 30b, 30c, 30d), are arranged on the guide carriage (28), of which one upper and one lower roller, viewed in or against the direction of travel (FR) of the pick-up attachment (10), are supported in a left and a right guide or track (38) of the guide carriage (26).

10. Pick-up attachment (10) according to at least one of the preceding claims, characterized in that the distance between the rollers (30) is vertically and / or horizontal direction in the guidance system (24) is chosen to be as large as technically possible.

11. Pick-up attachment (10) according to at least one of the preceding claims, characterized in that the distance of the lower rollers (30c, 30d) to the support point (32) of the guide element (18), in particular a sliding plate, is selected to be as small as technically possible in the vertical direction.

12. Pick-up attachment device (10) according to at least one of the preceding claims, characterized in that the guide system (24), preferably the guide track (26) and / or the guide carriage (28), has one or more stops (34, 36) for limiting the movement between the guide means, wherein preferably at least one upper stop (34) and at least one lower stop (36) limit the guide or raceway (38).

13. Pick-up attachment (10) according to at least one of the preceding claims, characterized in that the stops (32, 34) are interchangeable, differently designed and / or differently adjustable, preferably attachable at different positions of the guide systems (24), in particular screwable.

14. Pick-up attachment (10) according to at least one of the preceding claims, characterized in that the stops (32, 34) are designed as stop dampers or stop buffers and / or as fixed stops or as a combination of damping and fixed stops.

15. Pick-up attachment device (10) according to at least one of the preceding claims, characterized in that the stops (32, 34) of the guide systems (24) arranged further towards the center of the pick-up attachment device (10) are selected and arranged such that the movement between the guide means is more restricted than between the guide means of the guide systems (24) arranged further outwards.

16. Pick-up attachment (10) according to at least one of the preceding claims, characterized in that each linear guide system (24) is adjustable such that its guide track or raceway (38) is arranged perpendicular or in a direction or at an angle to the ground (16) that deviates from it.

17. Pick-up attachment device (10) according to at least one of the preceding claims, characterized in that a central guide cam, in particular a continuous pressure plate or contact surface, is fixedly, preferably integrally, attached to or integrated on the machine frame (20).

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