Three-point hitched agricultural attachment device

Abstract

The invention relates to an agricultural attachment device of the three-point linkage type, in particular for land treatment and / or harvesting preparation, having a front longitudinal side, a rear longitudinal side, two end sides which are shorter than the longitudinal sides, and a transport device for transport operation, wherein the transport device has a three-point receiver in one of the end sides, which has one upper and two lower receiving mechanisms.

Description

TECHNICAL FIELD

[0001] The invention relates to a dreipunktgetragenes agricultural attachment device, which is configured, inter alia, for land treatment and / or harvesting preparation. BACKGROUND

[0002] Such an attachment device, which is configured, for example, as a seedling killer or as a cultivator, has a front longitudinal side, a rear longitudinal side and two end sides, which are shorter than the longitudinal sides, and is provided with a transport device for a transport operation. Generally, the transport device of the devices known on the market comprises a drawbar and support wheels. The support wheels are used for supporting the device on the ground during field operation and have to be converted for the transport operation of the attachment device on public roads, since the attachment device has a width of more than 3 m in the field operation, seen in the direction of travel of the tractor, so that it is not allowed to drive on the road with the attachment device positioned in the field operation. Therefore, in order to drive on the road, the attachment device known from the prior art is turned so that the longitudinal sides of the attachment device are oriented parallel to the direction of travel in the transport operation, the end sides extend transversely to the direction of travel and the support wheels are arranged at the rear end sides, away from the tractor. Then, the attachment device is pulled by the drawbar of the tractor. SUMMARY

[0003] It is therefore an object of the invention to provide a dreipunktgetragenes agricultural attachment device with an improved, simply maneuverable transport device.

[0004] This object is achieved by an agricultural attachment device according to the invention. Advantageous design options of the invention can be gathered from the following description.

[0005] The attachment device according to the invention is characterized in that the transport device has a dreipunktaufnahme in one of the end sides, which dreipunktaufnahme has one upper and two lower receiving mechanisms. The dreipunktaufnahme is a receiving device, the upper and lower receiving mechanisms of which can be held in the upper and lower links of a dreipunkt-Kraftheber. Therefore, in order to arrange the attachment device for a transport operation, the conversion of the support wheels and the drawbar can be dispensed with. In particular in the transport operation, the attachment device is carried only by the dreipunkt-Kraftheber of the associated tractor, so that the support by means of the support wheels can be dispensed with. Preferably, in order to arrange the upper and / or lower receiving mechanisms, one or more existing frame parts of the attachment device can be used in order to fix the dreipunktaufnahme at the attachment device. This simplifies the retrofitting of already marketed attachment devices and the integration of the solution according to the invention in the new production of the attachment device according to the invention.

[0006] Another advantageous design of the invention is characterized in that, in addition to the first three-point receiving portion arranged on one of the longitudinal sides, the attachment also has a three-point receiving portion as another three-point receiving portion, through which the attachment is held by the three-point suspension of the tractor during field operation, or the three-point receiving portion is constructed as a detachably fixed and, in particular, interchangeable three-point receiving portion, which can be fixed on one of the longitudinal sides for field operation and on one of the end sides for transport operation, wherein the attachment is held by the three-point suspension of the tractor during field operation through the detachably fixed three-point receiving portion.

[0007] The construction of the invention, with a single detachably secured three-point receiving part, minimizes the weight of the attachment according to the invention. However, this necessitates the detachable transport of the three-point receiving part to the end or longitudinal side in the field, where it is then secured. For example, after disassembling the three-point receiving part securing mechanism that holds the three-point receiving part at other attachments, the three-point receiving part can remain secured to the tractor's three-point suspension during this process. A typical securing mechanism is, for example, a bolt with a safety pin that secures the detachably secured three-point receiving part to the interlocking portions of other attachments. With the three-point receiving part released, the tractor moves to another securing location on the end or longitudinal side, where the three-point receiving part is again secured by a corresponding securing mechanism. At least a portion of the transport device is used for field operation.

[0008] Alternatively, in the attachment device according to the invention having two three-point receiving parts, the loosening and fixing of the three-point receiving part on the other attachment device can be eliminated. The corresponding three-point receiving part is connected to the tractor in the usual manner.

[0009] If a first three-point receiving portion and / or another three-point receiving portion are explicitly mentioned, the embodiments described below relate to variations of the invention having two three-point receiving portions. Otherwise, both variations are included, provided they are technically meaningful.

[0010] One or two three-point receiving units are secured to frame components, preferably identical frame components, particularly those configured as longitudinal side supports, especially during field operation and transport, enabling the use of stable attachment equipment within the frame components. Securement to identical frame components facilitates the design of the three-point receiving units. The frame of the attachment equipment particularly includes one or more longitudinal side supports, which can be connected to each other via other, preferably diagonal brace-type frame components and / or the enclosure of the work implement.

[0011] The attachment device according to the application has a (horizontal) extension in the direction of the longitudinal sides of at most 9 m. Preferably, this is at most 6 m. The horizontal extension of the end sides perpendicular to the longitudinal extension of the longitudinal sides is at most 3 m, preferably at most 2.5 m. It is understood that the extension of the longitudinal sides is the straight extension of the attachment device along the longer side in a top view, independently of the contour of the attachment device, and that the extension of the end sides thus corresponds to the extension of the attachment device transverse to the straight extension mentioned, again independently of the contour of the attachment device. In general, therefore, in a top view of the attachment device, a rectangle encloses the attachment device, wherein any foldable or erectable parts of the attachment device are arranged in a position set for a transport operation, irrespective of whether the opposite end side or longitudinal side has a different length.

[0012] Advantageously, the three-point receiver is held at the at least one frame part of the attachment device by means of the at least one diagonal brace by means of the upper receiving means, and in particular at the at least one longitudinal side support of the attachment device. The three-point receiver can thus be simply added, without having to integrate additional frame parts into the frame of the attachment device in addition to the three-point receiver and its support. The load-bearing frame of the attachment device can remain unchanged. The upper receiving means of the three-point receiver can in particular be supported on the front longitudinal side support of the attachment device by means of one diagonal brace and on the rear longitudinal side support of the attachment device by means of another diagonal brace, at the frame already present. When the attachment device is viewed in its in-service operating state in the direction of travel of the tractor, the diagonal braces preferably extend in the direction of the middle of the attachment device. Preferably, in the variant with two three-point receivers, when the diagonal brace in the region of the upper receiving means of the three-point receiver fixed at the end side is fixed at the frame part, in particular the longitudinal side support, between the two lower receiving means of the three-point receiver present in the longitudinal side at least in the in-service operation, a particularly stable structure is obtained. In the variant with a diagonal brace at the front longitudinal side and at the rear longitudinal side, respectively, this applies analogously to the second diagonal brace and its arrangement and fixation at the other longitudinal side.

[0013] Alternatively or additionally, the upper receiving means can be supported at an upper longitudinal support of the attachment device. This applies in particular to variants in which the attachment device already has an upper frame support as standard, which is oriented transversely to the direction of travel in the driving operation and extends through at least a portion of the width of the attachment device. Alternatively or additionally, it can be a matter of a fastening at an upper frame part. The frame support, more precisely the upper frame part, can likewise give rise to a connection to a three-point receiving part arranged on the longitudinal sides, so that the overall structure is likewise sufficiently stable for the transport operation in which the entire weight of the attachment device is carried by the tractor. The upper longitudinal support is understood to mean that it is arranged above the longitudinal side supports on the sides and, in a view looking towards the end side, between the two longitudinal side supports irrespective of their height. The longitudinal side supports together form a frame of the device and run in the direction of the longitudinal sides of the attachment device, for example inside or outside a housing. The longitudinal side supports can likewise together form a housing or a shroud.

[0014] According to a further advantageous configuration of the application, the attachment device can alternatively or additionally be provided with a further three-point receiving part, which is directly supported at a shroud of at least one of the work implements. By way of example, a work implement is a cutting tool, which comprises a knife, a fixing means therefor and a drive means. Such a work implement is to be partially mounted in a stable shroud in order to achieve a safe on-site operation.

[0015] Advantageously, the three-point receiving part is arranged on the end side of the transmission assembly facing away from the end side, so that any drive train is not affected by the arrangement of the three-point receiving part.

[0016] According to a further advantageous configuration of the application, the three-point receiving part frame of the further three-point receiving part is configured without horizontal struts. For example, in the case of a three-point receiving part configured triangularly with receiving means arranged in the corners of the triangle, the lower strut forming the base of the triangle can be omitted. The function of the lower strut can be achieved by the shroud, for example. In this case, the three-point receiving part frame comprises only inclined struts which extend upwards obliquely with respect to the upper receiving means.

[0017] Advantageously, the further three-point receiver can be arranged eccentrically with respect to the end side and the center of gravity of the attachment device, so that any parts of the attachment device that are still to be unloaded in the driving operation can be taken into account. The arrangement eccentric with respect to the center of gravity of the attachment device is in particular an arrangement in which, in a view looking towards the end side, the center of gravity of the attachment device is not on a perpendicular to the ground running centrally through the upper receiving means. Here, the aim is for the width of the attachment device to be distributed as evenly as possible behind the tractor in the direction of travel of the tractor in the transport operation, so that the attachment device together with all parts is carried as centrally as possible behind the tractor. The eccentric arrangement can be achieved by the further three-point receiver being arranged correspondingly moved with respect to the center of gravity. Alternatively, however, the arrangement can also be achieved by the further three-point receiver having additional upper receiving means and lower receiving means, so that the further three-point receiver has the upper receiving means (two) and the corresponding additional lower receiving means arranged side by side in the view, which are used for coupling with the three-point linkage of the tractor.

[0018] In order to protect the end side provided with the further three-point receiver in the field operation, the attachment device can be provided with a frame which can in particular be folded into a protective position, which is integrated into the three-point receiver.

[0019] Furthermore, in order to achieve a greater ground clearance in the driving operation, it is advantageous for the lower receiving means of the further three-point receiver to be arranged lower than the adjacent attachment device frame, wherein the relevant attachment device frame is for example one or more longitudinal side supports.

[0020] The advantages described above and below are particularly advantageous for an attachment device designed as a seedling killer, a cultivator or a mulcher. BRIEF DESCRIPTION OF DRAWINGS

[0021] Further advantageous design options of the application can be gathered from the following description of the drawings. Amongst others:

[0022] Figure 1 The object according to the application is shown schematically in a view from the front,

[0023] Figure 2 The object according to the application is shown schematically in a view from the front, Figure 1

[0024] Figure 3 The object according to the application is shown schematically in a view from the front, Figure 2

[0025] Figure 4 The object according to the application is shown schematically in a view from the front, Figure 1

[0026] ​​​Figure 5 Another object according to the application is shown schematically in perspective view. DETAILED DESCRIPTION

[0027] The individual technical features of the embodiments explained below can be combined with the features explained above to produce an improvement according to the application. Features that serve the same purpose are assigned the same reference numerals, as far as is reasonable.

[0028] The three-point carrying agricultural attachment 2 according to the application is lifted behind the tractor 3 in the transport operation by the three-point linkage 5 Figure 1 ). The attachment 2 comprises a front longitudinal side 4, which is present in the field operation, and a rear longitudinal side 6, at which a support wheel 7 is arranged in the corner region towards the end side 8. A first three-point receiver 10 comprising struts 31 is fixed at the front longitudinal side 4, by which the attachment 2 is carried in the field operation Figure 2 ). For the transport operation, the attachment 2 according to the application comprises a further three-point receiver 12, which is fixed at the end side 8 of the attachment 2 and forms a transport device of the attachment 2. The further three-point receiver enables simple retrofitting of existing devices, which is achieved by screwing it at a frame part configured as a longitudinal side bracket 18.

[0029] The further three-point receiver 12 comprises a lower receiving mechanism 14 and an upper receiving mechanism 16, by which the attachment 2 is carried in the transport operation by the three-point linkage 5. The further three-point receiver 12 is correspondingly supported at the front longitudinal side bracket and the rear longitudinal side bracket 18 by two diagonal struts 20. A rest 9 is arranged on the side opposite the support wheel 7, by means of which the attachment 2 can be rested on the ground 11 Figure 1 and Figure 3 ). For this, the attachment 2 can be parked after the field operation in a position in which decoupling from the first three-point receiver 10 and coupling to the further three-point receiver 12 can be achieved simply.

[0030] During the field operation, the diagonal struts 20 extend from the upper receiving mechanism 16 to approximately the middle of the attachment, viewed in the direction of travel F, so that a secure and stable fixing in the transport operation is achieved without having to reinforce the frame of the attachment 2 significantly. Viewed along or against the direction of travel (in the field operation and independently of the height), the diagonal struts 20 fixed at the front longitudinal side bracket 18 at the front longitudinal side 4 are fixed between the two lower receiving mechanisms, so that any forces occurring at the fixing can be guided better into the first three-point receiver 10, which additionally reinforces the frame of the attachment 2 Figure 4 .

[0031] For simpler assembly and retrofitting, a further three-point receiving part 12 is arranged at the end side 8 of the transmission assembly 26 facing away from the end side.

[0032] Likewise, the further three-point receiving part 12 is not provided with a lower horizontal brace and is therefore configured without a horizontal brace. In the horizontal direction, support is achieved by means of a housing part 27 extending along the end side in a planar manner, which is part of a housing of the work tool not further shown. In order to lift the attachment device 2 simply during a transport operation, the lower receiving means 14 is fixed slightly below the longitudinal side support 18 at the latter.

[0033] Instead of the embodiment of the application according to Figures 1 to 3 the embodiment according to Figure 5 cancels the diagonal brace 20 and has the upper receiving means 16 supported by the upper longitudinal side support 22. This results in a centrally arranged housing reinforcement 28, which likewise supports the upper receiving means 16 of the first three-point receiving part 10 as part of the frame of the attachment device.

[0034] The two further three-point receiving parts 12 of the attachment device according to the application shown are provided with a frame without a horizontal brace, which has two frame braces 30 running parallel to the planar extension of the housing part 27 in addition to the upper receiving means 16 and the lower receiving means 14. The frame braces can additionally be fixed at the housing part 27.

Claims

1. An agricultural attachment device (2) having a front longitudinal side (4), a rear longitudinal side (6), two end sides (8) which are shorter than the longitudinal sides, and having a transport device for a transport operation, characterized in that the transport device having a second three-point receiver (12) in one of the end sides (8) with one upper receiving means (16) and two lower receiving means (14), wherein the attachment device has, in addition to a first three-point receiver (10) arranged in one of the longitudinal sides, by which the attachment device (2) is held in the field operation by a three-point linkage (5) of a tractor (3), a second three-point receiver (12) as a further three-point receiver, or the second three-point receiver (12) is configured as a detachably securable and exchangeable three-point receiver, which can be arranged in one of the longitudinal sides for the field operation and secured in one of the end sides (8) for the transport operation, wherein the attachment device (2) is held in the field operation by a three-point linkage (5) of a tractor (3) by the detachably securable three-point receiver.

2. The attachment device of claim 1, wherein, One or both three-point receivers are secured in the frame parts in the field operation and in the transport operation.

3. The attachment device of claim 2, wherein, One or both three-point receivers are secured in the frame parts configured as longitudinal side brackets (18) in the field operation and in the transport operation.

4. The attachment of claim 2, wherein, One or both three-point receivers are secured in the same frame parts configured as longitudinal side brackets (18) in the field operation and in the transport operation.

5. The attachment of claim 2, wherein, The second three-point receiver (12) is held at at least one frame part of the attachment device (2) by means of at least one diagonal brace (20) by the upper receiving means (16).

6. The attachment device of claim 5, wherein, The diagonal brace (20) is secured at the frame part between the two lower receiving means (14) of the first three-point receiver (10) of a longitudinal side.

7. Attachment according to any of the preceding claims 1 to 6, characterized in that The upper receiving means (16) are supported at an upper longitudinal bracket (22) of the attachment device (2).

8. Attachment according to any of the preceding claims 1 to 6, characterized in that The second three-point receiver (12) is directly supported at a housing of at least one work implement.

9. Attachment according to any of the preceding claims 1 to 6, characterized in that The second three-point receiver (12) is arranged at an end side (8) of a drive assembly (26) facing away from an end side.

10. Attachment according to any of the preceding claims 1 to 6, characterized in that The three-point receiver frame of the second three-point receiver (12) is configured without horizontal braces.

11. Attachment according to any of the preceding claims 1 to 6, characterized in that The second three-point receiver (12) is arranged eccentrically with respect to the end side (8) and with respect to the attachment device center of gravity.

12. Attachment according to any of the preceding claims 1 to 6, characterized in that Configured as a seedling killer, a cultivator or a surface loosener.

13. Attachment according to any of the preceding claims 1 to 6, characterized in that The attachment device (2) is used for land treatment and / or harvest preparation. The attachment device (2) is used for land treatment and / or harvest preparation.

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