Agricultural implement

Abstract

Agricultural implement for mounting on a tractor, with working units (4) which can be driven by means of a mechanical drive train (12) from a tractor power take-off shaft, wherein said mechanical drive train (12) comprises a distribution gearbox (6) with at least two output shafts (9) extending to different sides, to which cardan shafts (11) can be connected for driving at least two working units (4), wherein the distribution gearbox (6), viewed in the direction of travel, is arranged behind said at least two working units, characterized in that the output shafts (9), each arranged horizontally and at an acute angle, are inclined at an angle Φ in the range of 30° to 60° to a vertical longitudinal median plane of the implement, wherein the output shafts (9) and an input shaft (7) together form a W-shaped arrangement.where the input wave (7) extends approximately midway between the output waves (9) in the V-shaped space spanned by the output waves (9).

Description

[0001] The present invention relates to an agricultural implement for mounting on a tractor, with working units that can be driven by a mechanical drive train from a tractor power take-off (PTO) shaft, wherein said drive train comprises a distribution gearbox with at least two output shafts extending to opposite sides, to which cardan shafts can be connected for driving at least two working units. Such an implement can, in particular, be a haymaking machine in the form of a rake.

[0002] The working units of such attachments can advantageously be raised or lowered between a lowered working position and a raised headland and / or transport position, whereby laterally projecting working units can preferably be folded upwards around a horizontal axis or folded backwards or forwards around an upright axis in order to achieve a smaller machine width in the transport position.

[0003] With such swiveling or foldable implements, the drive shafts that connect the implements to the transfer case, or at least form part of the drive links between the transfer case and the implements, must compensate for or enable the swiveling movement of the implements relative to the transfer case without having to be removed. This requires, on the one hand, compensating for the corresponding angular misalignment that occurs due to the swiveling movement of the implement, which, for example, is not entirely straightforward with a swiveling movement of at least approximately 90° and sometimes necessitates expensive wide-angle joints on the drive shafts.Secondly, any change in distance between the output shafts of the transfer case and the connecting shaft stubs on the working units must also be compensated for by the driveshaft, since the pivot axes for the pivoting movement of the working units do not regularly pass directly through the output shafts of the transfer case or the aforementioned connecting shaft stubs of the working units.

[0004] The aforementioned problem of length compensation via the drive shafts extending from the transfer case becomes even more pronounced when the working units are arranged or mounted in a sliding manner, as is known, for example, in rotary rakes where the rotary rakes are mounted on telescopic or longitudinally sliding cross-frame sections to control the swath placement. Similarly, mowers can also be shifted laterally to the track, for example, to ensure sufficient overlap between the front and rear mower units when cornering.

[0005] To compensate for relatively large changes in distance with relatively short drive shafts, it has been proposed to use multi-telescoping drive shafts, which comprise several telescopically sliding shaft sections. However, such multi-telescoping drive shafts are expensive and only have limited robustness.

[0006] An agricultural implement in the form of a haymaking machine with a distribution gearbox from which transverse drive shafts extend is known from document DE 195 35 304 A1.

[0007] Document EP 29 23 541 A1 also proposes the use of a special transfer case with staggered gear arms, allowing the drive shafts leading to the working units to be arranged diagonally and thus lengthened. The drive shaft of the left working unit extends to the right side of the transmission to a right-hand output shaft, while the drive shaft of the right working unit extends to the left side of the transmission and a left-hand output shaft. This lengthening of the drive shafts allows them to better compensate for the length and angular misalignment when the working units are swung upwards into the transport position, even if they are only simply telescopic. However, due to its staggered gear arms, the transfer case requires a relatively large installation space.Furthermore, collision problems can arise between the drive shafts and a central machine frame if the transfer case is to be driven below the central machine frame and the working units are swung upwards into the transport position.

[0008] Furthermore, the document DE 197 16 379 C1 shows a rotary rake with four rotary rotors driven by the tractor's power take-off shaft via a mechanical drive train. A central distribution gearbox is located on the central machine frame, positioned between the two front and two rear rotary rotors when viewed in the direction of travel.

[0009] Furthermore, the document JP 2013-165655 A shows a rotary rake with two rotary rotors driven by the tractor's PTO shaft. The distribution gearbox is located at the front end of the machine frame, with a forward-facing input shaft connected to the tractor's PTO shaft and two rearward-facing output shafts connected to the rotary rotors.

[0010] The present invention is based on the objective of creating an improved agricultural implement of the type mentioned above, which avoids disadvantages of the prior art and advantageously develops the latter further. In particular, a simple, compact distribution gearbox and drive shaft arrangement should enable a high degree of adjustability of the working units without collisions of the drive shafts with frame components.

[0011] According to the invention, the aforementioned problem is solved by an agricultural implement according to claim 1. Preferred embodiments of the invention are the subject of the dependent claims.

[0012] It is therefore proposed to position and align the output shafts of the transfer case in such a way that the connecting drive shafts have sufficient length and do not experience excessively large bending angles at the joints when the working units are moved. The arrangement of the transfer case and its output shafts is such that the drive shafts leading to the working units no longer extend parallel to, directly alongside, the support arms that carry the working units and may be telescopic or sliding, but instead run at an acute angle to these support arms. This results in smaller bending angles when the support arms pivot and reduces the corresponding changes in drive shaft length when the support arms are telescoping or longitudinally moved.

[0013] According to the invention, the output shafts of the transfer case are each arranged horizontally and inclined at an acute angle of approximately 30° to 60° to the vertical longitudinal center plane of the implement. Unlike in the prior art, the output shafts of the transfer case no longer extend perpendicular to the direction of travel and / or perpendicular to the transmission input shaft, but are inclined at an acute angle to these.

[0014] The transfer case features a W-shaped arrangement of the two output shafts and the transmission input shaft. The input shaft extends approximately centrally within the V-shaped area spanned by the two output shafts, which are arranged at an acute angle.

[0015] In this process, at least the two output waves can extend in a common plane, and in a further embodiment of the invention, the input wave can also be arranged, at least approximately, in the plane in which the two output waves lie. Alternatively, a parallel offset of the input wave to the plane of the output waves and / or a certain, in particular slightly acute, inclination or tilting of the input wave relative to the plane spanned by the output waves is also possible.

[0016] The acute-angled arrangement of the output shafts can be particularly advantageous when the transfer case is offset relative to the two implements to be connected, and the transfer case can be positioned either in front of or behind the implements when viewed in the direction of travel. This offset, combined with the acute-angled arrangement of the output shafts, allows the drive shafts running from the transfer case to the respective implements to better compensate for movements of the support arms on which the implements are mounted. Specifically, pivoting movements and / or lateral adjustments of the support arms can be compensated for with smaller articulation angles at the drive shaft joints.In addition, compared to a drive shaft arrangement parallel to, the drive shafts have an increased length directly at the respective support arms, which allows for a greater length adjustment even with only simple telescoping of the drive shaft.

[0017] It is advantageous to position the transfer case, viewed in the direction of travel, on the side facing away from the tractor. If the implement is mounted at the rear of the tractor, the transfer case is therefore located behind the implements, to which the drive shafts lead from the transfer case. The drive train extends from the tractor's PTO point, past the implements, to the transfer case, which is located behind the implements, and then from the output shafts of the transfer case, essentially against the direction of travel, back to the implements. The drive shafts exhibit the aforementioned spread relative to the longitudinal center plane when the implements are in their lowered working position.

[0018] If a front-mounted attachment is planned, the gearbox arrangement can be reversed, i.e., placed in front of the working units when viewed in the direction of travel.

[0019] The output shafts of the transfer case can, in principle, assume various orientations. For example, the output shafts can be arranged symmetrically to the input shaft and / or to the longitudinal center plane of the transmission, and in particular, be oriented towards the respective working unit, so that, depending on the arrangement of the working units relative to the transfer case, different angular positions of the output shafts relative to each other can result.

[0020] In particular, the output shafts of the transfer case can each be arranged at an angle of approximately 40° to 50° or approximately 45° to an upright longitudinal center plane of the transfer case and / or the attachment and extend – roughly speaking – to the respective working unit.

[0021] The arrangement of the output shafts of the transfer case need not necessarily be symmetrical to the transmission input shaft. In an advantageous embodiment of the invention, it can be provided that only one of the output shafts is in rolling engagement with the transmission input shaft and / or is directly driven by said input shaft. The other output shaft can be in rolling engagement with the first output shaft and / or be driven by this first output shaft. For example, it can be provided that the output shaft in rolling engagement with the input shaft extends beyond the vertical longitudinal center plane of the transfer case and that its end section extends beyond this plane is in rolling engagement with the other output shaft. In principle, however, various arrangements and engagement configurations are possible.

[0022] In particular, the aforementioned output waves can extend in a horizontal plane. Regardless of this, the input wave can also extend in a horizontal plane.

[0023] In an advantageous embodiment of the invention, the transfer case with its output shafts is offset in height relative to the working units and their input shafts, to which the drive shafts are connected, when the machine is in its working position. This means that the transfer case with its output shafts is not at the same height as the working units with their input shafts when the working units are in their lowered working position. In particular, the transfer case can be positioned higher than the working units with their input shafts when the latter are in their lowered working position.

[0024] If the output shafts of the transfer case are aligned in a horizontal plane, or at least lying down, as described above, the drive shafts connecting the transfer case to the working units will have a slight bend angle at the joints provided at the transfer case-side end of the drive shafts when the working units are in the lowered working position.

[0025] Advantageously, the drive shaft stubs of the working units can also be arranged in a horizontal plane, or at least lying down, at least when the working units are in the lowered working position. Given the aforementioned height difference to the transfer case, this also results in a slight, acute angle of articulation at the joints provided at the working-unit-side end of the drive shafts.

[0026] Advantageously, such a height offset, in particular the higher arrangement of the transfer case, can achieve a smaller articulation angle at the joints of the drive shafts when pivoting the working units or lifting working units into the headland position and / or transport position, since these, so to speak, move beyond the height-equal position to the transfer case and the previously described articulation angles in the working position are reversed.

[0027] The height difference between the transfer case and the working unit in the working position can fundamentally vary. In a further development of the invention, said height difference can be approximately 10% to 50% or 10% to 25% of the length of a driveshaft that connects the transfer case to the respective working unit, wherein the said height difference exists in the lowered working position of the working units.

[0028] The transfer case can, in principle, be located or mounted in various positions, for example, on the top side of a central frame member. However, it is advantageous to locate or mount the transfer case on the underside of a central frame member, which extends longitudinally along the implement and supports the laterally projecting support arms from which the working units are suspended. By positioning the transfer case on the underside of the central frame member, the drive train coming from the tractor's power take-off (PTO), and in particular its driveshaft, can run beneath the frame member and be easily routed to the tractor's PTO. Furthermore, there is no risk of collision for the aforementioned drive train coming from the tractor's PTO when the support arms carrying the working units are folded upwards into the transport position.Furthermore, this results in an overall lower center of gravity.

[0029] To achieve the aforementioned height difference between the working units and the transfer case despite their placement on the underside of the frame beam, the frame beam can extend upwards from the section where the support arms of the working units are hinged to the transmission mounting section where the transfer case is attached, and / or have a slope that inclines upwards when resting on a horizontal surface. In particular, the frame beam can extend upwards or slope upwards at the rear, or in the section adjoining the working units in the direction of travel.

[0030] In a further development of the invention, the distribution gearbox can advantageously be arranged approximately centrally between the two working units of the attachment, whereby, viewed in the direction of travel, the explained offset between the position of the working units and the position of the distribution gearbox can be provided.

[0031] In addition to the two aforementioned drive shafts extending to different sides, the transfer case may also include at least one further additional output shaft, for example to drive another working unit in addition to the two lateral working units, which may be arranged offset in the direction of travel.

[0032] According to an exemplary, advantageous embodiment of the invention, the transfer case can comprise a transmission input shaft pointing approximately in the direction of travel, as well as the aforementioned at least two output shafts, which can extend at an acute angle to the direction of travel. A further, third output shaft can also be oriented in the direction of travel and extend towards the side of the transfer case opposite the input shaft.

[0033] In an advantageous embodiment of the invention, the drive shafts extending from the output shafts can each be designed with only a single telescopic extension. Due to the greater length of the drive shafts resulting from the offset arrangement of the transmission output shafts, sufficient length compensation can be achieved even with only a single telescopic extension. At the same time, such a drive shaft possesses high robustness while being easy to manufacture. The drive shafts can be designed with single joints, i.e., without wide-angle joints.

[0034] The aforementioned transmission and / or drive shaft arrangement can, in an advantageous embodiment of the invention, be used in various agricultural implements, with particular advantages arising from its use on a haymaking machine, which can be configured as a rake or a tedder. Alternatively, the distribution gearbox can also be used on a mower with laterally projecting mowing units.

[0035] The aforementioned gearbox or drive shaft arrangement is particularly advantageous when the working units of the attachment are slidably suspended on support arms and / or are arranged to be foldable from a working position into a headland or transport position.

[0036] The invention is explained in more detail below with reference to a preferred embodiment and the accompanying drawings. The drawings show: Fig. 1: A schematic, partial perspective view of an agricultural implement in the form of a swather with rotary units arranged laterally on the right and left, which can be driven via cardan shafts from a central distribution gearbox and are shown in an upward-swiveled transport position, Fig. 2: a schematic representation of the transfer case made of Fig. 1, which shows the W-shaped arrangement of the transmission input shaft and the transversely exiting, acutely inclined output shafts of the transfer case, Fig. 3: A partial side view of the attachment and its distribution gearbox from the preceding figures, viewed horizontally perpendicular to the direction of travel, showing the vertically offset arrangement of the gearbox output shafts relative to the input shafts on the working unit when the working unit is in its lowered working position, and Fig. 4: A top view of the attachment and its distribution gearbox from the preceding figures, viewed vertically from the ground, showing the rearward arrangement of the distribution gearbox in the direction of travel and the offset of the output shafts of the distribution gearbox to the input shaft of the working unit.

[0037] Without this Fig. As shown in Figure 1, the implement 1 can include a mounting device for attachment to a tractor not shown, wherein the said mounting device can, for example, include a mounting frame which can be attached to the tractor by means of a top and bottom link arrangement or three-point linkage known per se.

[0038] The aforementioned attachment device is connected to a frame section 3, to which several working units 4 can be articulated or suspended. For example, support arms 5 can extend from the aforementioned central frame section 3, each with a working unit 4 attached to it. These support arms 5 can, in particular, project laterally transversely from the frame section 3 to support a left and a right working unit 4, for example, each in the form of a rotary gyroscope.

[0039] The aforementioned support arms 5 can be pivoted upwards about horizontal pivot axes to remove the working units 4 from the in Fig. The lowered working position shown in Figure 1 can be pivoted upwards into a raised headland position and / or into a substantially upright transport position. Alternatively or additionally, the aforementioned support arms 5 can be folded backwards around upright pivot axes, for example to create impact protection and / or to allow the working units to be folded backwards into a transport position.

[0040] How Fig. As shown in Figure 1, the implement can be designed as a semi-mounted unit, in which the aforementioned central frame section 3 is supported on the ground by a chassis, although a tractor-mounted arrangement is also possible. The chassis can be positioned in front of or behind the working units when viewed in the direction of travel, and can also be located between several working units, particularly if the implement 1 comprises two staggered groups of raking rotors that can serve different tracks, for example, to rake crops together in a cascade fashion.

[0041] The attachment 1 can therefore be designed in particular as a four-rotor rake, whose rotary rotors are arranged in two pairs staggered one behind the other and can be articulated to the frame part 3 by a support arm 5 projecting to the right and left.

[0042] A distribution gearbox 6 can be, for example, mounted in a fixed position on the central frame part 3 or on a frame part connected thereto, which can advantageously be arranged in a central position in the direction of travel behind the two rear working units 4.

[0043] In other words, the drive train, coming from the tractor's power take-off shaft, can extend rearward beyond the rear working units 4 in order to run from the transfer case provided there back forward to the laterally projecting working units, as shown in this Fig. Figure 3 shows that if the implement has more than the pair of working units shown in the figures, in particular in the form of two rotary heads arranged further forward, the said drive train can include a further distribution gearbox that branches the drive movement of the power take-off shaft and the associated drive train to the front working units.

[0044] The aforementioned distribution gearbox 6 advantageously comprises an input shaft 7 projecting towards the tractor, which extends horizontally, or approximately lying down, forwards, cf. Fig. 1. The aforementioned input shaft 7 can be connected directly or, if necessary, via additional gear stages to a power take-off shaft of the tractor in order to tap into the rotary drive movement of the tractor.

[0045] In order to drive the working units 4, the distribution gearbox 6 comprises two output shafts 9 extending transversely to the input shaft 7, one of which faces one working unit and the other the other working unit. As the Fig. As shown in Figure 2, the laterally extending output shafts 9 are arranged at least approximately symmetrically, but are not aligned with each other. In particular, the aforementioned output shafts 9 can each extend horizontally at an acute angle Φ to an upright longitudinal median plane that passes through the input shaft 7. The said angle Φ can be, in particular, approximately 30° to 60° or 40° to 50° or, more specifically, approximately 45°, such that the aforementioned output shafts 9 extend obliquely forward towards the working units 4 located further forward, cf. Fig. 2 and Fig. 4.

[0046] The aforementioned output waves 9 can extend approximately horizontally and / or span a common plane in which the input wave 7 can also extend.

[0047] Overall, the transfer case 6 with its output shafts 9 and its input shaft 7 has a W-shaped configuration, cf. Fig. 2, in which the output waves and the input wave extend in the same direction, namely forwards, with the output waves 9 spreading out at an acute angle as described above. The input wave 7 can, in particular, extend approximately midway between the two output waves 9 in the V-space spanned by the output waves 9.

[0048] How Fig. As shown in Figure 2, only one of the output shafts 9 can be in rolling engagement with the input shaft 7, for example via a bevel gear stage, while the other output shaft 9 is not directly in rolling engagement with the input shaft 7, but rather with the first-mentioned output shaft 9. For this purpose, the first-mentioned output shaft 9, which is in engagement with the input shaft 7, can extend beyond the longitudinal center plane to the side of the other output shaft 9, cf. Fig. 2.

[0049] How Fig. As shown in Figure 4, the input shaft stubs 17 on the working units 4 can also be arranged horizontally, inclined at an acute angle to the longitudinal center plane, wherein the aforementioned input shaft stubs can also be inclined at an angle of approximately 40° to 50° or, in particular, approximately 45° to the vertical longitudinal center plane. Fig. Figure 4 shows that the input shaft stubs 17 of the working units point approximately obliquely to the rear towards the distribution gearbox when the working units 4 are in the lowered working position.

[0050] The input shaft stubs 17 of the working units 4 and the output shafts 9 of the distribution gearbox 6 are advantageously not aligned with each other, but are arranged approximately parallel to each other, albeit offset, so that the end joints of the drive shafts 11 are slightly bent in opposite directions to each other when the working unit 4 is in the lowered working position.

[0051] Such a counter-rotating bend in the drive shaft joints can advantageously be shown in a top view of the machine in a viewing direction perpendicular to the ground, as shown here. Fig. Figure 4 shows. Alternatively or additionally, such a counter-rotating bend in the drive shaft joints can also be present in a side view of the attachment, in a horizontal direction perpendicular to the direction of travel, as shown here. Fig. 3 shows.

[0052] The distribution gearbox 6 can be offset vertically relative to the working unit 4 and its input shaft stub 17, in particular it can be positioned somewhat higher when the working unit 4 is in the working position. The vertical offset h, see below. Fig. 3, can be in the range of 10% to 50% of the length of the drive shaft 11.

[0053] Independently of the above, the transfer case 6 can, in an advantageous embodiment of the invention, be arranged in a substructure of the aforementioned central frame part 3, and in particular be mounted thereon. To achieve the aforementioned height offset h, the frame part 3 can extend upwards from the pivot points of the support arms to the rearwards, or extend obliquely upwards, as shown. Fig. Figure 3 shows when the machine is viewed in its intended orientation relative to a horizontal piece of flooring.

[0054] How Fig. As shown in Figure 1, a left working unit 4 can be connected to the left output shaft 9 of the transfer case 6 via a driveshaft 11, and a right working unit 4 can be connected to the right output shaft 9 of the transfer case 6 via a corresponding driveshaft 11, so that the two driveshafts 11 extend to each other in an approximately V-arrangement, at least when the working units 6 are in the working position, cf. Fig. 4.

[0055] The output shafts 9 can advantageously have the aforementioned height offset h to the input shaft 17 of the respective working unit 4, cf. for example Fig. 3 and Fig. 4.

[0056] How a comparison of Fig. 1 and Fig.As shown in Figure 3, the arrangement of the distribution gearbox 6 can be such that the distribution gearbox is located above the input shaft stub 17 of the working unit 4 in the working position, while the working unit 4 or its input shaft stub 17 extends significantly above the distribution gearbox 6 in the raised transport position.

[0057] Due to the aforementioned inclined position of the input shaft stubs 17, these extend diagonally downwards and backwards in the raised transport position, in which the working units are essentially upright and / or tilted at approximately 90° relative to the working position, so that they point approximately towards the transfer case 6. This results in relatively small articulation angles at the drive shaft joints in both the lowered working position and the raised transport position.

[0058] Advantageously, the pivot axis around which the support arms can pivot the working units 4 upwards can be aligned approximately parallel to the direction of travel when lying down. This allows the aforementioned input shaft stubs 17 on the working units 4 to be moved from the horizontal, inward-pointing position in the working position to the aforementioned downward-pointing orientation, approximately parallel to the upright longitudinal center plane of the machine, in the raised transport position.

Claims

[1] Agricultural implement for mounting on a tractor, with working units (4) which can be driven by means of a mechanical drive train (12) from a tractor power take-off shaft, wherein said mechanical drive train (12) comprises a distribution gearbox (6) with at least two output shafts (9) extending to different sides, to which cardan shafts (11) can be connected for driving at least two working units (4), wherein the distribution gearbox (6), viewed in the direction of travel, is arranged behind said at least two working units, characterized by, that the output shafts (9), each arranged horizontally and at an acute angle, are inclined at an angle Φ in the range of 30° to 60° to a longitudinal median plane of the attachment, wherein the output shafts (9) and an input shaft (7) together form a W-shaped arrangement, in which the input shaft (7) extends approximately centrally between the output shafts (9) in the V-shaped space spanned by the output shafts (9). [2] Agricultural implement according to the preceding claim, wherein the output shafts (9) are arranged inclined at an angle Φ of 40° to 50° or about 45° to the upright longitudinal median plane. [3] Agricultural implement according to one of the preceding claims, wherein the output shafts (9) and one / the input shaft (7) are arranged in a common, in particular approximately horizontal, plane. [4] Agricultural implement according to one of the preceding claims, wherein a first of the said output shafts (9) is in rolling engagement with the input shaft (7) and the other output shaft (9) is in rolling engagement with the said first output shaft (9), wherein the first output shaft (9) extends beyond the longitudinal axis of the input shaft (7) to the side of the other output shaft (9). [5] Agricultural implement according to one of the preceding claims, wherein the distribution gearbox (6), viewed in the direction of travel, is offset relative to the working units (4) and is arranged at a different height relative to the working units (4) in their working position such that the drive shafts (11) connecting the distribution gearbox (6) to the working units (4) in their working position spread out in a V-shape and extend downwards, wherein the V-shaped spreading angle between the two drive shafts (11) in the lowered working position of the working units (4) is preferably in the range of 2 times 20° to 2 times 60° or 2 times 30° to 2 times 45°. [6] Agricultural implement according to one of the preceding claims, wherein the distance of the distribution gearbox (6) from the pivot points of the support arms (5) carrying the working units (4) on a central frame section (3) is approximately 20% to 80% or 30% to 60% of the distance of the working units (4) from said central frame section (3). [7] Agricultural implement according to one of the preceding claims, wherein the distribution gearbox (6) is arranged by a height offset (h) above input shaft stubs (17) of the working units (4) when the working units (4) are lowered into the working position, wherein said height offset (h) is in the range of 10% to 50% of the length of the cardan shafts (11) that connect the distribution gearbox (6) to the working units (4). [8] Agricultural implement according to one of the preceding claims, wherein the distribution gearbox (6) is arranged on the underside of a central frame part (3) to which the working units (4) are articulated via support arms. [9] Agricultural implement according to the preceding claim, wherein the central frame part (3) has a course inclined obliquely upwards from the pivot points of the support arms to the distribution gearbox (6). [10] Agricultural implement according to one of the preceding claims, wherein the input shaft stubs (17) of the working units (4) are arranged lying in their lowered working position and inclined at an acute angle to an upright longitudinal median plane of the working implement and pointing towards the distribution gearbox (6), wherein said input shaft stubs (17) are arranged parallel to or skew away from the output shafts (9) of the distribution gearbox (6), such that end joints on the cardan shafts (11) connecting the distribution gearbox (6) to the working unit are bent in opposite directions to each other when the working units (4) are in the lowered working position. [11] Agricultural implement according to one of the preceding claims, wherein the drive shafts (11) are connected to the output shafts (9) in a V-arrangement relative to each other when viewed in the direction of travel and / or in the direction of an input shaft (7) of the transfer case (6). [12] Agricultural implement according to one of the preceding claims, wherein the working units (4) are movably mounted between a lowered working position and a raised transport and / or headland position, in particular are arranged in a foldable manner, in particular about a horizontal folding axis pointing approximately in the direction of travel. [13] Agricultural implement according to one of the preceding claims, wherein the working units (4) are displaceable transversely to the direction of travel and / or are displaceably mounted in positions spaced at different distances from a central frame part. [14] Agricultural implement according to one of the preceding claims, wherein the drive shafts (11) are each designed to be simply telescopic. [15] Agricultural implement according to one of the preceding claims, wherein the implement is designed as a haymaking machine, in particular a tedder or rake and the working units (4) comprise rotary rakes. [16] Agricultural implement according to one of the preceding claims, wherein the implement is designed as a mower and the working units (4) comprise mower units.

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