Pick-up device for a harvesting machine

Abstract

The invention relates to a pick-up device (10) for a harvesting machine (100) or a hay-making machine, wherein the pick-up device is provided in order, during working use, to pick up harvested crop, in particular stalk and leaf material, from the ground and to transport same further. With said pick-up device (10), the harvested crop is initially grasped by the pick-up tines (13) attached to a feed drum (11) and raised from the ground. During further rotation of the feed drum (11), the harvested crop is stripped off by way of strippers (19) and then transported further. In unfavourable conditions, in particular in the case of harvested crop with long stalks, harvested crop may wrap around the feed drum (11) or become stuck on protrusions, for example in the open U rails. This may lead to malfunctions and / or damage to the components. In order to strip off the harvested crop more completely and therefore better from the strippers (19), it is proposed that the pick-up tines (13) comprise a pivot bearing (38) with a tine rotational axis (20) such that the pick-up tines (13) are rotatably mounted on the feed drum (11) and, during rotation of the feed drum (11) about the feed drum rotational axis (12), are at least temporarily supported on a guide element (30).

Description

[0001] Mounting device for a harvesting machine

[0002] Description

[0003] The invention relates to a receiving device for a harvesting machine, wherein the receiving device is intended to pick up harvested material, preferably hay and leaf material, from the ground during operation and to transport it further.

[0004] The harvesting machine can be, for example, a loader wagon, a baler, a forage harvester or a haymaking machine.

[0005] Such pickup devices are also referred to as "pickups." Known pickup devices comprise a drivable conveyor drum with pickup tines arranged on or at the conveyor drum, and a stripping device that strips the crop picked up from the ground by the pickup tines. The crop stripped by the pickup drum is usually transported or further processed, for example, by downstream units.

[0006] DE 10 2016 009 007 A1 discloses a picking-up device for picking up crops, comprising a rotating, drivable spiked rotor with picking-up tines. The spiked rotor comprises an outer and an inner drum, the two drums being arranged eccentrically to one another. The picking-up tines are fastened to the inner drum. The outer drum has a drum shell with openings through which the picking tines pass. Both drums can be driven, the drive preferably being synchronized by a spur gear. When both drums rotate, the tines mounted on the inner drum are pushed out through the holes provided in the outer drum and then retracted again. The disadvantage of this is that the tines rub against the circumferential contour of said holes each time they are pushed out and retracted.Since both the tines and the drum are made of metal, resulting in metal-on-metal friction, this results in significant wear. This is especially true because the tines are actively pressed against the peripheral contours of the holes by the crop being conveyed. To facilitate the replacement of worn or broken tines, the outer drum is divided into several segments, which must first be disassembled to replace one or more tines. This results in considerable assembly effort.

[0007] In addition, the desired spring function of the tines provided for in DE 102016009 007 A1 is impaired due to the system. Firstly, the spring leg of a tine can only spring in the area where it protrudes from the outer drum. Secondly, the force transmitted from the crop to a spring leg is only partially transferred to the tine's coil spring coil located inside the outer drum.

[0008] Another disadvantage is that the inner drum, on which the tines are attached, generally has a smaller diameter than the outer drum, so that a limited number of rows of conveyor tines can be attached to the drum shell by the circumference of the drum.

[0009] DE 197 40 589 A1 discloses a pick-up device comprising a drum and a comb-like scraper. The drum is formed from open U-profiles connected by sheet metal casings. The pick-up tines are designed as double leg springs and made of spring steel. The spiral winding section is housed in the U-profiles, so that only the legs (sections 32) protrude beyond the drum edge.

[0010] With this pickup device, crop that cannot be cleanly removed by the scrapers is drawn between the scrapers into an area below the scrapers. Under unfavorable conditions, especially with long-stemmed crops, such crops can wrap around the drum or become stuck on protrusions, for example, in open U-shaped rails. This can lead to malfunctions and / or damage to components.

[0011] The object of the invention is to eliminate the disadvantages described and to propose a receiving device in which the crop is stripped more completely and thus better by the strippers.

[0012] This object is achieved by a receiving device having the features of claim 1.

[0013] The recording device includes:

[0014] - a drivable conveyor drum with a conveyor drum rotation axis and with a conveyor drum shell which has an outer radius,

[0015] - Pick-up tines arranged on the conveyor drum, comprising a tine base and a leg with a tine end protruding from the tine base,

[0016] - a scraper device with scrapers arranged on it.

[0017] The conveyor tines are attached to or on the conveyor drum. In contrast to the embodiment known as prior art according to DE 10 2016 009 007 A1, which comprises an inner drum and an outer drum and in which the pickup tines are arranged on the inner drum, a significantly larger surface area is available when the pickup tines are attached to the outer conveyor drum. Compared to the embodiment according to DE 10 2016 009 007 A1 with pickup tines attached to the inner drum, a larger number of conveyor tines can be attached one behind the other in the direction of rotation of the drum. The larger number of conveyor tines, or rows of conveyor tines, arranged one behind the other, evens out and thus improves the pickup of crop. In addition, the load exerted by the crop on the individual conveyor tines is reduced depending on the number of rows of conveyor tines.

[0018] The scrapers of the scraper system can be designed to wrap around the conveyor drum in a U-shape and have an outer contour with an outer radius. Alternatively, the scrapers can be stub-shaped and only encompass a portion of the conveyor drum. Regardless of whether the scrapers wrap around the conveyor drum or are simply stub-shaped, the conveyor tines dip between the scrapers when the conveyor drum rotates, so that the crop is scraped off by the conveyor tines.

[0019] In the pickup device known from DE 102016 009 007 A1, however, the crop is stripped off in two steps. First, the conveyor tines are drawn into the interior of the conveyor drum through openings provided in the drum. The crop remains on the drum's outer surface and, as the drum continues to rotate, is stripped off the drum by a single stripping element arranged transversely to the drum.

[0020] The conveyor drum can have a round or polygonal contour. The polygonal contour can be a regular polygon, with all sides of equal length and all interior angles of equal size. However, it can also be an essentially regular polygon. An essentially regular polygon is understood to be a polygon in which the surfaces between two adjacent edges are not formed by a single surface, but by two surfaces arranged at an interior angle of 170° to 180° to each other. This can provide advantages when attaching the pick-up tines.

[0021] A particular advantage of a polygonal drum is that it can be manufactured from a flat starting material, especially a flat steel sheet, and any holes and cutouts can be easily and precisely machined into the drum using appropriate processing machines. Unlike with round rolling, the subsequent edging process does not cause distortion in the holes and cutouts.

[0022] During operation, crops lying on the ground are picked up by the picking up tines of the rotating conveyor drum and form a crop stream which is gripped underneath by the stripping device. As the conveyor drum continues to rotate, the crop stream reaches an upper area where it is stripped from the conveyor drum by the aforementioned stripping device and then fed to downstream working units. In the picking up device known as prior art from DE 19740 589 A1, this stripping is achieved by a special contour of the strippers there. The picking up tines themselves are uncontrolled and describe a circular path around the conveyor drum's axis of rotation as the conveyor drum rotates. In the picking up device according to the invention, however, the picking up tines comprise a pivot bearing with a tine rotation axis and are rotatably mounted on the conveyor drum.When the conveyor drum rotates around its axis of rotation, the conveyor tines are supported at least temporarily on a guide element. The guide element is preferably arranged within the conveyor drum.

[0023] Preferably, the pivot bearing is a bearing mounted in a front area of ​​the tine base, as seen in the direction of rotation DR, which enables the receiving tines to swing around the tine rotation axis.

[0024] During operation, the crop picked up by the tines exerts a force F on the limbs of the tines. This force F causes the tine to rotate around the tine's axis of rotation and presses a contact area of ​​the tine foot located at the rear of the tine foot against the guide element.

[0025] As the conveyor drum continues to rotate, the contact area of ​​the tine foot continues to rest on the guide element. As a result, a tine end provided on the receiving tine describes an at least partially controlled orbit around the conveyor drum's axis of rotation: Whenever, or wherever, a force F acts on the receiving tine and the contact area of ​​the tine foot is pressed against the guide element, the orbit is controlled. In contrast, the orbit is uncontrolled whenever, or wherever, no force F acts on the receiving tine. In this uncontrolled area, the receiving tine can oscillate around the tine's axis of rotation with little resistance.

[0026] Put simply, the conveyor tine attached to the conveyor drum swings and penetrates into the conveyor drum through a recess provided in the conveyor drum. Preferably, the conveyor tine, in particular its tine base, has an outer contour that is adapted to the opening contour of said recess. This ensures that the opening provided in the conveyor drum remains closed even when the conveyor tine swings, preventing crop material from entering the interior of the drum.

[0027] The interaction of pivot bearing and guide element can also be described as

[0028] Tine control can be referred to as a tine control. The particular advantage of this type of tine control is that it significantly facilitates the stripping of the crop from the receiving tines in the transition area to the areas downstream of the conveyor drum. Put simply, low-resistance stripping depends not - or at least not only - on the contour of the scrapers, but also on the orbit of the tine ends defined by the tine control: In the stripping area, the receiving tines, which pivot in the opposite direction to the direction of rotation of the drum, rest against the drum shell in the direction of the drum shell and thus glide out of the crop stream with little resistance.Since this eliminates or at least reduces the torque acting on the crop flow around the conveyor drum's rotation axis, the crop flow is pushed toward the downstream units, and less or no crop is pulled by the rotating tines between the scrapers and thus out of the crop flow. Crop pulled out of the crop flow either leads to crop loss because it falls to the ground as the conveyor drum continues to rotate, or it wraps around the drum, increasing power requirements and / or causing malfunctions.

[0029] In a preferred embodiment, the conveyor drum shell comprises recesses through which the pick-up tine can be pivoted at least partially into an interior region of the conveyor drum. The tine rotation axis can preferably be arranged in the region of said recess. For example, it can be aligned with the drum shell or positioned within a range of plus or minus 10 mm outside or inside the drum shell. Even when the pick-up tines are partially pivoted into the conveyor drum, the pick-up tines rest against the drum shell towards the drum shell and slide out of the crop stream with little resistance.

[0030] A particular advantage of the pickup tines that partially pivot into the interior of the conveyor drum is that, with otherwise identical kinematic proportions of pickup tines, tine orbit, and guide element, a larger diameter can be selected for the conveyor drum than with a conveyor drum in which the pickup tines and pivot bearings are arranged completely outside the conveyor drum casing. A larger diameter of the conveyor drum reduces the risk that the crop will not be stripped off by the scrapers as desired, but will instead wrap around the conveyor drum. The guide element is preferably a guide drum with a cylindrical, elliptical, or polygonal outer contour. The guide drum ensures robust use and secure guidance of the pickup tines and the contact areas of the tine feet provided in the foot area of ​​the pickup tines.The guide element can be fixed to the receiving device or its frame. The receiving tines arranged on the rotating receiving drum then rub against each other in the contact area between the receiving tines and the fixed guide element. As an alternative to a fixed guide element, the guide element can also be provided for passive movement, similar to the drum with the attached receiving tines, or for it to be actively moved.

[0031] Such a design is particularly easy to implement and advantageous in terms of wear reduction if the aforementioned guide drum is provided as the guide element. The guide drum can, for example, comprise a pivot bearing and thus be passively movable. In this case, the guide drum is set in rotation by the receiving tines supported on its casing surface. Simply put, the receiving tines mounted on the conveyor drum and rotating with it drive the guide drum or cause it to rotate.

[0032] As an alternative to a passively rotating guide drum, an active rotary drive, such as a hydraulic motor, can also be provided for the guide drum. An active rotary drive allows the speeds of the pick-up drum and guide drum to be synchronized, reducing frictional resistance in the contact area between the pick-up tines and the guide drum.

[0033] Since the orbit of the tine ends depends on the outer contour provided on the guide element, it is possible to influence the force F acting on the pickup tines from the crop flow by designing the outer contour. This force F should preferably be large where the crop is lifted from the ground in order to lift the crop safely and completely from the ground. In contrast, the force F should be small where the crop, or rather the crop flow, is transferred to the downstream units so that no crop is drawn between the scrapers into the interior of the conveyor drum. It is therefore particularly advantageous if an outer contour is provided for the guide element that achieves both objectives. To improve this effect, an elliptical or polygonal outer contour of the guide element can be provided instead of a cylindrical outer contour.

[0034] In a preferred embodiment, the guide drum has a central axis that is not identical to the rotational axis provided on the conveyor drum, but is offset, preferably parallel to it. The guide drum and conveyor drum are thus arranged eccentrically to each other. The eccentric offset of the rotational axes makes tine control easy to implement with a cylindrical guide drum design.

[0035] The guide drum can be rotatably mounted and preferably comprise a passive drive. A passive drive can be achieved by the pick-up tines contacting the guide drum casing causing the guide drum, which is preferably mounted on a smooth running surface, to rotate and bring it to approximately the same speed as the conveyor drum.

[0036] As an alternative to a passive drive, an active drive, for example an electric or hydraulic motor or a chain drive, can also be provided.

[0037] As an alternative to a rotatably mounted guide element or a rotatably mounted guide drum, a guide element fixed in a predefined position can also be provided. In such a case, the contact area of ​​the receiving tine provided on the tine base thus sweeps over the guide element when the conveyor drum rotates. To reduce the frictional resistance between the guide element and the receiving tine, the guide element and / or the receiving tine can be coated. This reduces the power required to drive the conveyor drum and reduces wear on the contacting components.

[0038] In a preferred embodiment, the pick-up tine can comprise at least one rotatably mounted roller or ball, which rests on the guide element as the conveyor drum rotates. Since the frictional resistance is generally lower with rolling friction than with sliding friction, the power required to drive the conveyor drum and the wear on the contacting components are reduced.

[0039] In a preferred embodiment, the pick-up tines are held by a removable fastening element that can be fixed to the conveyor drum, with the pivot bearing of the pick-up tines preferably being integrated into the fastening element. The removable fastening element allows for easy replacement of damaged or worn pick-up tines. Furthermore, by attaching the pick-up tines to the outer casing, access to the fastening elements is unproblematic, and the replacement of individual tines does not require the disassembly of other parts.

[0040] Preferably, the fastening elements, which can be retaining plates, for example, are attached to the conveyor drum with a locking and / or screw connection in such a way that the pick-up tines can be removed without disassembling other components, such as the scrapers. In particular, the aforementioned locking and / or screw connections can be accessed in the spaces provided between the scrapers. In principle, the proposed tine fastening is universally applicable for round and square drums.

[0041] The fastening elements by means of which the receiving tines are coupled to the conveyor drum preferably comprise a partial area with a U-shaped contour, wherein the inner dimension of the U-shaped contour is adapted to an outer dimension provided on the receiving tine. A partial area of ​​the receiving tine, preferably a partial area of ​​the tine base, is thus positively enclosed by the U-shaped contour of the fastening element in the assembled state. This securely holds the receiving tine on the drum and reduces the risk of the receiving tine bending sideways or breaking off when a force acting transversely to the direction of rotation of the conveyor drum occurs.

[0042] The pick-up tines are preferably made of a flexible material, such as a flexible plastic or spring steel. The plastic can be an elastomeric, synthetic plastic, such as polyurethane (PUR) or silicone rubber. These plastics, specially selected for the pick-up tines, are characterized by excellent sliding properties and not only absorb the force exerted by the crop on the pick-up tines, but also facilitate the stripping of the crop from the pick-up tines.

[0043] In a further embodiment, the pick-up tine can comprise a tine base made of a different, preferably less elastic or harder, material than the leg of the pick-up tine. This different elasticity ensures that the tine base is held rigidly and thus securely on the conveyor drum, while at the same time allowing the tine leg to deform when peak loads occur, preventing it from breaking or overstretching.

[0044] In a further embodiment, the conveyor drum and / or the receiving tine can comprise a damping element which, when the receiving tine oscillates about the tine rotation axis in the direction of the conveyor drum shell, brakes, cushions or dampens a stop of the contact area of ​​the tine foot on the contact area of ​​the guide element.

[0045] As described above, the pickup tine is mounted on a pendulum. During operation, the force exerted on the pickup tine by the crop flow creates a torque that presses the contact area provided on the tine base against the guide element, which can be in the form of a guide drum, for example. Once the crop has been stripped off the pickup tines, the torque is removed and the pickup tine, which has been tensioned by the torque, suddenly relaxes. It then swings around the tine rotation axis with little resistance and, upon further rotation of the conveyor drum or the next time it comes into contact with the crop, is pressed against the guide drum by a force that then acts again on the pickup tine. Because this movement sequence takes place very quickly, the tine base contact area can hit the guide element suddenly and cause increased noise.By equipping either the tine foot or the area of ​​the guide element in which the tine foot suddenly contacts the guide element with a damping element, the aforementioned shocks can be cushioned and the noise reduced.

[0046] The object of the invention is further achieved by a receiving device according to one of claims 1 to 12.

[0047] Further measures improving the invention are presented in more detail below with the description of preferred embodiments of the invention with reference to the figures.

[0048] The figures show:

[0049] Fig. 1 shows a harvesting machine with a receiving device in the embodiment of a loading wagon;

[0050] Fig. 2 shows the receiving device of the harvesting machine according to Fig. 1 in a perspective view; Fig. 3 shows the receiving device according to Fig. 2 in a side view in the form of a sectional view;

[0051] Fig. 4 shows a pick-up tine including the components intended for fastening the pick-up tine;

[0052] Fig. 5 shows a receiving tine inserted into a fastening element;

[0053] Fig. 6 shows an alternative embodiment of a pick-up tine with a roller inserted into the tine base;

[0054] Fig. 7 shows a receiving device with the receiving tines according to Fig. 6 in a side view in the form of a sectional representation.

[0055] Identical or similar elements may be provided with identical or similar reference numerals in the following figures. Furthermore, the figures of the drawing, their description and the claims contain numerous features in combination. A person skilled in the art will appreciate that these features can also be considered individually or combined to form further combinations not described in detail here. The invention expressly also extends to embodiments that are not defined by feature combinations from explicit references to the claims, whereby the disclosed features of the invention can be combined with one another in any way, as long as this is technically reasonable. The exemplary embodiments illustrated in the figures are therefore merely descriptive and are not intended to limit the invention in any way.

[0056] The terms “upper”, “top”, “lower”, “left” or “right” used below refer to the arrangement of a harvesting machine shown in the drawing in accordance with Figure 1.

[0057] Fig. 1 shows a harvesting machine 100 with a pickup device using the exemplary embodiment of a loader wagon. The loader wagon shown in the exemplary embodiment comprises a pickup device 10 with a roller-shaped conveyor drum 11 and pickup tines 13 attached thereto. During operation, the pickup device 10 is supported on feeler wheels 14. The conveyor drum 11 is rotatably mounted on a drive shaft 53. The conveyor drum 11 and the pickup tines 13 attached thereto rotate in a direction of rotation DR during operation. The drive shaft 53 and conveyor drum 11 thus have a rotation axis 12. The loader wagon also comprises a conveyor rotor 16, cutting unit 17, a chassis, and a loading space arranged above the chassis. Furthermore, reference numeral 15 represents a feed roller known per se, which is part of a continuous flow system that supports the transport of the crop. The continuous flow system is also called a CFS charging unit.

[0058] Fig. 2 shows the pickup device 10 of the harvesting machine 100 according to Fig. 1 in a perspective view. The conveyor drum 11 comprises a conveyor drum shell 21, which is made from a sheet metal blank and has an outer radius R1. A plurality of pickup tines 13 are attached to the conveyor drum 11 and project beyond the outer radius R1 of the conveyor drum 11. The pickup tines 13 are shown here as an example. In the illustrated embodiment, they are individual tines, which essentially comprise a tine base 36 and legs 23 protruding therefrom. The pickup tines 13 are coupled to the conveyor drum 11 by fastening elements 27 and a pivot bearing 38.

[0059] In the illustrated embodiment, the pick-up tines 13 are arranged in tine groups 54 of three to five pick-up tines 13 next to each other on the conveyor drum 11. The group-wise and radially offset arrangement equalizes the drive required for the rotation of the conveyor drum 11. When the conveyor drum 11 rotates, the pick-up tines 13 lift crops from the ground during operation and convey them to the downstream units.

[0060] Instead of the pick-up tines 13 shown here, other, preferably elastic, tine segments can also be used. The crop picked up by the pick-up tines 13 during harvesting is conveyed to the conveyor rotor 16 with the assistance of the feed roller 15, cut by the cutting unit 17, and finally reaches a loading space provided on the loader wagon.

[0061] In the illustrated embodiment, the receiving device 10 further comprises a stripping device 18 with a plurality of strippers 19. The strippers 19 have an outer contour 22, are decoupled from the conveyor drum 11, do not rotate, and wrap around the conveyor drum 11 in a U-shape. In their front region, viewed in a direction of travel FR, the U-shaped strippers 19 form a semicircle with a radius R3 defined by the outer contour 22. As an alternative to the strippers illustrated in the exemplary embodiment, other strippers, for example stubby ones that do not completely wrap around the conveyor drum 11, could also be provided.

[0062] Between each two adjacent scrapers 19 there are gaps 55 through which the picking tines 13, or their legs 23, are guided. In the illustrated embodiment, the gaps 55 have a width B which is adapted in the form of a clearance fit to a width provided on the leg 23. Crop (not shown) picked up from the ground by the picking tines 13 is deposited on the scrapers 19 in the form of a conveyor stream. As the conveyor drum 11 continues to rotate, it is lifted in the front area of ​​the picking device 10 and scraped off by the picking tines in the rear, upper area of ​​the picking device 10. Scraping takes place when the picking tines 13 dip between the scrapers 19 in the upper, rear area of ​​the picking device 10 as the drum rotates.

[0063] Fig. 3 shows the receiving device according to Fig. 2 in a side view in the form of a sectional illustration. In the illustrated embodiment, the conveyor drum 11 is made from a folded sheet metal blank. This creates flat sections on the surface of the drum shell 21, to which the receiving tines 13 can be easily attached. In the illustrated embodiment, the receiving tines 13 are attached to the drum 11 by means of the fastening elements 27, with the pivot bearing 38 being integrated into the fastening elements 27. The pivot bearing 38 has a tine rotation axis 20 about which the receiving tines 13 can pivot.

[0064] If a force F caused by the crop flow acts on the pickup tines 13, this results in a torque about the rotation axis 20. The torque pivots the pickup tine 13 about the tine rotation axis 20 until a contact area 25 provided in a rear area 48 on the tine base 36 can bear against a guide element 30 provided in the interior area 51 of the conveyor drum 11, more precisely: against a contact area 24 provided on the guide element 30. In order to reduce the resulting friction, the two contact areas 24, 25 in the illustrated embodiment have a friction-reducing coating 26.

[0065] In the illustrated embodiment, a guide drum 31 is provided as the guide element 30. This guide drum 31 can be rotatably mounted, but in the present embodiment, unlike the conveyor drum 11, it is fixed. In the present embodiment, the guide drum 31 has a central axis 32, which is arranged at a distance 33 from the conveyor drum's rotational axis 12.

[0066] The pickup tines 13 have tine ends 49 which, when the conveyor drum 11 rotates, describe an orbit 50 around the conveyor drum rotation axis 12. Due to the eccentric arrangement of the conveyor drum rotation axis 12 and the guide drum central axis 32 and due to the guidance of the pickup tine 13 by means of the guide drum 31, the pickup tine performs a pendulum movement around the tine rotation axis 20 during one rotation of the conveyor drum 11. Due to this pendulum movement, an angle of attack ß applied to the pickup tine 13 relative to the conveyor drum 11 changes: In the area in which the pickup tines 13 grasp and convey the crop, the angle of attack ß is preferably approximately 90°. In the upper area of ​​the pickup device 10, the angle ß reduces to an acute angle, so that the conveying behavior of the pickup tine 13 is no longer as aggressive.Due to the acute angle ß, the pickup tine 13 initially has a trailing characteristic before it is finally pulled out of the crop flow largely perpendicular to it and submerges between the scrapers 19.

[0067] Fig. 4 shows an exploded view of a receiving tine 13, including the components provided for fastening the receiving tine 13. In the illustrated embodiment, the fastening element 27 has a partial area 28 with a U-shaped contour 29. The receiving tine 13 has a width 35 in a front area 47 of its tine base 13, which is adapted to a width 34 of the U-shaped contour 29 of the fastening element 27. In the assembled state (see Fig. 5), the fastening element 27 positively engages a partial area 52 arranged in the front area 47 of the tine base 36, forming a clearance fit. The clearance fit enables the aforementioned pendulum movement of the receiving tine 13 about the tine rotation axis 20.The pivot bearing 38 provided in this respect is formed in the illustrated embodiment by inserting a cylindrical pin 59 through bores 37 and 58 of the tine base 36 and the fastening element 27, which bores coincide with one another in the assembled state (cf. Fig. 5).

[0068] As Fig. 4 further shows, the fastening element 27 is mounted in a removable manner by means of a screw 39, which is associated with a washer 41, and a nut 40 pressed into a recess 42 of the conveyor drum shell 21. When the receiving tines 13 are mounted, the head of the screw 39 is accessible through the gaps 55 of the scrapers 19 without disassembling the scrapers 19. Replacing an individual receiving tine 13 is thus very simple.

[0069] 4 and 5 also illustrate the manner in which the pendulum movement of the receiving tine 13 about the tine rotation axis 20 takes place. In the illustrated embodiment, the conveyor drum casing 21 comprises recesses 42 for receiving the nuts 40 and recesses 43 into which a part of the U-shaped region 29 of the fastening element 27 projects in the assembled state. The U-shaped region 29 projects approximately so deeply into the inner region 51 of the conveyor drum 11 that the tine rotation axis 20 is located at the level of the conveyor drum casing 21. The rear part of the opening 43, viewed in the direction of rotation DR, is adapted in the form of a clearance fit to an outer contour formed by the rear region 47 of the tine base 36. As a result, an oscillation of the receiving tine 13 in the region of the opening 43 and partially through this into the interior 51 is made possible.

[0070] As already explained above, when the force F is applied, the receiving tine 13 swings into the interior 51 until the contact area provided on the tine base 25 strikes the guide drum 31 provided in the interior of the conveyor drum 11 (see Fig. 4 and Fig. 7). The receiving tine 13 preferably has a tine outer contour 60 that is adapted to an opening contour 61 provided with regard to the recess 43. The tine outer contour 60 and the opening contour 61 can be stepped. This makes it possible to keep the recess 43 closed by the receiving tine 13 swinging in or out of the recess 43, even with a stepped design of the receiving tine 13, in particular the tine base 36.

[0071] Fig. 6 shows an alternative embodiment of a receiving tine 13' with a roller 45 inserted into the rear region 48 of the tine base 36. The roller is rotatably mounted on a pin 57 inserted into the tine base 36 and largely fills a free space in the tine base 36, but projects beyond the tine base 36. Analogous to the sliding contact region 25 of a receiving tine 13 according to the embodiment of Fig. 5 described further above, an outer circumferential surface of the pivot bearing 56 present on the roller 45 contacts the guide drum 31 in the mounted state and when a force F is applied, so that the tine ends 49 of the receiving tines 13' describe an orbit 50 analogous to the tine ends 49 of the receiving tines 13 when the conveyor drum 11 rotates. However, the roller 45 does not slide along the contact area 24 of the guide drum 31, but rolls on this contact area 24. Fig.Figure 7 shows a pick-up device 10 with the pick-up tines 13' according to Figure 6 in a side view in the form of a sectional illustration. It can be seen that the rollers 45 are guided by the guide drum 31 and roll along it as the conveyor drum 11 rotates.

[0072] In order to ensure a uniform and largely recoil-free sliding of the tine foot 13 or the roller 45 of the tine foot 13' on the guide drum, damping and / or spring elements (not shown) can be provided on the receiving tine 13, 13' or on the guide drum 31.

[0073] List of reference symbols

[0074] 10 Mounting device

[0075] 11 Conveyor drum

[0076] 12 Conveyor drum rotation axis

[0077] 13 tines

[0078] 13' Pick-up tines (2nd embodiment)

[0079] 14 feeler wheel

[0080] 15 Feed roller

[0081] 16 conveyor rotor

[0082] 17 Cutting unit

[0083] 18 Scraper device

[0084] 19 scrapers

[0085] 20 tine rotation axis

[0086] 21 Conveyor drum shell

[0087] 22 outer contour (of 19)

[0088] 23 legs (of 13)

[0089] 24 contact area (out of 30)

[0090] 25 contact area (of 36)

[0091] 26 Coating

[0092] 27 Fastening element

[0093] 28 sub-areas (of 27)

[0094] 29 U-shaped contour (on 27)

[0095] 30 guide element

[0096] 31 Guide drum

[0097] 32 central axis (of 31)

[0098] 33 distance (from 32 to 12)

[0099] 34 internal dimensions (of 29)

[0100] 35 external dimensions (of 13)

[0101] 36 prong foot

[0102] 37 holes (in 36)

[0103] 38 Pivot bearing

[0104] 39 Screw

[0105] 40 mother

[0106] 41 Disc 42 Recess (for 40)

[0107] 43 recess (for 13)

[0108] 44 Pivot bearing

[0109] 45 roll

[0110] 46 rotation axis (of 45)

[0111] 47 front area (of 36)

[0112] 48 rear area (of 36)

[0113] 49 prong ends (of 13)

[0114] 50 orbit

[0115] 51 interior (of 11)

[0116] 52 sub-areas (of 36)

[0117] 53 Drive shaft

[0118] 54 tine group

[0119] 55 gap

[0120] 56 pivot bearings (of 45)

[0121] 57 pen

[0122] 58 holes (in 27)

[0123] 59 cylindrical pin

[0124] 60 tine outer contour

[0125] 61 opening contours (of 43)

[0126] 100 harvester

[0127] B Width (of 55)

[0128] DR direction of rotation (of 11)

[0129] F Force

[0130] FR Direction of travel (out of 100)

[0131] R1 outer radius (of 11)

[0132] R2 outer radius (of 30)

[0133] R3 Outer radius (of 19)

[0134] *****

Claims

Patent claims 1. A receiving device (10) for a harvesting machine (100), such as a loading wagon, a baler, a forage harvester or a haymaking machine, wherein the receiving device (10) is intended to receive harvested material, preferably stalks and leaves, from the ground during operation, comprising: - a drivable conveyor drum (11) with a rotational axis (12) and with a conveyor drum shell (21) which has an outer radius (R1), - receiving tines (13) arranged on the conveyor drum (11), which comprise a tine base (36) and a leg (23) protruding from the tine base (36) with a tine end (49), - a stripping device (18) with strippers (19) arranged thereon, characterized in that the receiving tines (13) comprise a rotary bearing (38) with a tine rotation axis (20) and are rotatably mounted on the conveyor drum (11) and are supported at least temporarily on a guide element (30) when the conveyor drum (11) rotates about the conveyor drum rotation axis (12).

2. Pick-up device (10) on a harvesting machine (100) according to claim 1, characterized in that the conveyor drum casing (21) comprises recesses (43) through which the pick-up tines (13) can be pivoted at least partially into an inner region (51) of the conveyor drum (11).

3. Pick-up device (10) on a harvesting machine (100) according to claim 1 or 2, characterized in that the guide element (30) is a guide drum (31) with a cylindrical, elliptical or polygonal outer contour.

4. Pick-up device (10) on a harvesting machine (100) according to claim 3, characterized in that the guide drum (31) has a central axis (32) and the central axis (32) of the guide drum (31) is arranged offset by a distance (33), preferably offset parallel, to the conveyor drum rotation axis (12) of the conveyor drum (11).

5. Pick-up device (10) on a harvesting machine (100) according to one of claims 1 to 4, characterized in that the guide drum (31) is rotatably mounted and comprises a preferably passive drive which is formed by the contacting of the pick-up tines (13, 13') with the conveyor drum casing (21).

6. Pick-up device (10) on a harvesting machine (100) according to one of claims 1 to 5, characterized in that the guide element (30) has a contact area (24) and the pick-up tine (13) has a contact area (25) and the contact area (24) and / or the contact area (25) is provided with a coating (26) reducing the frictional resistance between the guide element (30) and the pick-up tine (13).

7. Pick-up device (10) on a harvesting machine (100) according to one of claims 1 to 6, characterized in that the pick-up tine (13) comprises at least one rotatably mounted roller (45) or ball, which is supported on the guide element (30) when the conveyor drum (11) rotates.

8. Pick-up device (10) on a harvesting machine (100) according to one of claims 1 to 7, characterized in that the pick-up tine (13) is held by a fastening element (27) which can be removed and fixed to the conveyor drum (11), wherein the pivot bearing (38) is preferably integrated into the fastening element (27).

9. Pick-up device (10) on a harvesting machine (100) according to claim 8, characterized in that the fastening element (27) has a partial area (28) with an I-shaped contour (29), the inner dimension (34) of which is adapted to an outer dimension (35) provided on the pick-up tine (13), so that a partial area (52) of the pick-up tine (13) can be inserted into the U-shaped contour (29) of the fastening element (27).

10. Pick-up device (10) on a harvesting machine (100) according to one of claims 1 to 9, characterized in that the pick-up tine (13) is made of a flexible material, preferably of a plastic.

11. Pick-up device (10) on a harvesting machine (100) according to one of claims 1 to 10, characterized in that the pick-up tine (13) has a tine base (36) and the tine foot (36) is made of a different, preferably less elastic or harder, material than the leg (23) of the receiving tine (13).

12. Receiving device (10) on a harvesting machine (100) according to one of the claims 1 to 11, characterized in that the receiving tine (13) comprises a tine outer contour (60) which is adapted to an opening contour (61) of a recess (43) provided in the conveyor drum casing (21), so that the tine outer contour (60) of the receiving tine (13) closes the recess (43) even when the receiving tine (13) oscillates about the tine rotation axis (20) and prevents crop material from penetrating into the interior of the conveyor drum (11).

13. Pick-up device (10) on a harvesting machine (100) according to one of claims 1 to 12, characterized in that the conveyor drum (11) and / or the pick-up tine (13) comprises a damping element which, when the pick-up tine (13) swings around the tine rotation axis (20) in the direction of the conveyor drum casing (21), brakes, cushions or dampens a stop of the contact area (25) of the tine foot (36) on the contact area (24) of the guide element (30).

14. Harvesting machine (100) comprising a receiving device (10) according to one of claims 1 to 13. *****

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