Agricultural mowing machine

Abstract

The invention relates to an agricultural mowing machine comprising a work vehicle; a mounting system (10); and a mowing device, which is mounted to the front of the work vehicle and is movable transversely to a working direction of the work vehicle by means of the mounting system (10). The mounting system (10) comprises the following: a profile element arrangement (12) whose longitudinal direction extends transversely to the working direction and in which profile elements (13, 15) are interlocked such that the mowing device can be moved transversely to different working positions by means of relative displacement of the interlocked profile elements (13, 15) to one another; a mounting device (11) on the work vehicle side, which is formed and configured on at least one side with respect to the longitudinal direction of the profile element arrangement (12) to mount the mounting system (10) to the front of the work vehicle;a mower-side fastening device, which is arranged and configured on a side opposite the longitudinal direction of the profile element arrangement (12) to hold the mower on the fastening system (10); and an actuator device, which is operable to displace the nested profile elements (13, 15) relative to each other in order to adjust the different working positions of the mower.

Description

[0001] The invention relates to an agricultural mowing machine. background

[0002] Agricultural mowers are used to cut green plants, especially grass. Mowers can be formed from an agricultural vehicle that carries one or more mowing attachments. It is known to attach mowing attachments to the front and / or rear of such vehicles, for example, a tractor, in order to adapt the agricultural vehicle for different mowing tasks. The mowing attachment(s) can be mounted to the agricultural implement in such a way that they can be moved laterally to different working positions relative to the direction of travel of the implement. Such lateral adjustability of the mowing attachments supports an optimized mowing process. Summary

[0003] The object of the invention is to provide an agricultural mowing machine in which a front-mounted mowing device is securely attached to a work vehicle and can be flexibly moved into different working positions relative to the work vehicle.

[0004] The problem is solved by an agricultural mowing machine according to independent claim 1. Embodiments are the subject of dependent subclaims.

[0005] According to one aspect, an agricultural mowing machine is created with a work vehicle, a mounting system, and a mowing device, which is attached to the front of the work vehicle by means of the mounting system and can be moved transversely to the working direction of the work vehicle. The mounting system comprises the following: a profile element arrangement whose longitudinal direction extends transversely to the working direction and in which profile elements are interlocked, such that the mowing device can be moved transversely to the working direction into different working positions by means of relative displacement of the interlocked profile elements to one another; a mounting device on the work vehicle side, which is formed and configured on at least one side with respect to the longitudinal direction of the profile element arrangement to attach the mounting system to the front of the work vehicle;a mower-side fastening device, which is arranged and configured on a side opposite the longitudinal direction of the profile element arrangement, to hold the mower to the fastening system; and an actuator device, which is associated with and operable by the profile element arrangement, to move the nested profile elements relative to each other in order to adjust the different working positions of the mower.

[0006] The proposed mounting system enables a mechanically stable and reliable attachment of the mower unit to the front of the agricultural vehicle. Using the profile element arrangement and the associated actuator, the mower unit can be moved across the front of the vehicle into different working positions relative to the vehicle's direction of travel or operation. This allows for lateral movement of the mower unit on one or both sides. This enables flexible adjustments during mowing to accommodate varying requirements regarding the mowing area. The interlocking profile elements ensure a mechanically stable position of the mower unit in the different working positions.The relative displacement of the interlocking profile elements also supports the movement of the mowing device into different working positions with minimal effort.

[0007] The agricultural mower may further be provided with the following: in the profile element arrangement, a first profile element is inserted into a second profile element; the actuator is operable to move the second profile element along the first profile element; and the mower-side mounting device is arranged on the second profile element and can be moved together with it to adjust the different working positions of the mower. In this embodiment, the second profile element forms an outer profile element into which the first profile element is inserted, thus forming an inner profile element. The first profile element is inserted into an inner cavity of the second profile element. The first profile element itself can also be designed as a hollow profile element.Alternatively, the second profile element can be inserted into an inner cavity of the first profile element.

[0008] If the second profile element is displaced or moved along the first profile element by means of the actuator device, the first profile element can remain in a rest position, so that the relative displacement is carried out solely due to the movement or displacement of the second profile element.

[0009] By shifting the second profile element along the longitudinal direction of the first profile element, the mower-side mounting device is moved or shifted relative to the vehicle-side mounting device, so that the mower is shifted relative to and in a direction transverse to the working or travel direction of the vehicle. This results in a lateral movement with respect to the travel or working direction. During operation, the mower can thus be shifted into different working positions along the direction transverse to the travel or working direction.

[0010] The interlocking profile elements can overlap in the longitudinal direction of the profile element arrangement by an overlap length, and the overlap length can be the same in at least one first and one second of the different working positions, the second working position being different from the first. The overlap length can, for example, be formed between the first and the second profile element. In one embodiment, the overlap length essentially corresponds to the total length of the second (outer) profile element.

[0011] The first and second working positions can, for example, refer to opposing end positions or end positions of the second profile element with respect to its displacement along the first profile element.

[0012] The overlap length can remain constant at least during the relative displacement between the first and second working positions. In this embodiment, the overlap length is not only constant in the first and second working positions, but also throughout the displacement movement between them. This allows for the maintenance of the largest possible overlap length, which enhances the mechanical stability of the fastening system.

[0013] For example, the second profile element can assume one or more further working positions along the first profile element between the two end positions, in which the overlap length can optionally also be the same (as in the end positions).

[0014] The interlocking profile elements can each have a polygonal cross-sectional shape. In one embodiment, a hexagonal cross-sectional shape can be provided, which proves advantageous for the mechanical stabilization of the profile element arrangement. In this or other embodiments, lateral profile walls can be arranged parallel to each other and in a horizontal or vertical direction.

[0015] The interlocking profile elements can have the same or different cross-sectional shapes. If they have the same cross-sectional shapes, the profile elements can be positively interlocked and movable relative to each other.

[0016] The interlocking profile elements can slide against each other during relative displacement. In one embodiment, the second profile element slides or glides along the first profile element during displacement. Sliding or sliding elements can be arranged in the area of ​​opposing profile surfaces of the interlocking profile elements, which facilitate good mechanical displacement of the profile elements relative to each other. For example, the sliding or sliding elements can be formed with plates made of a plastic material.

[0017] The vehicle-side mounting device can be formed or arranged on the first profile element. In this embodiment, the first profile element is connected to the vehicle-side mounting device.

[0018] The end sections of the first profile element can project onto opposite sides of the second profile element. In this embodiment, the first profile element can extend continuously or intermittently through the second profile element. It can be provided that the end sections of the first profile element project onto opposite sides of the second profile element, at least in a central position relative to the first profile element. Starting from this central position, the second profile element can be displaced along the first profile element in both directions relative to the central position.

[0019] The vehicle-side mounting device can be connected to the end sections of the first profile element. For example, the end sections of the first profile element can be permanently connected to the vehicle-side mounting device, particularly at the ends, for example by means of a welded connection.

[0020] The vehicle-side mounting device can be detachably connected to a front-mounted three-point hitch on the vehicle. The vehicle-side mounting device can provide one central and two outer mounting points for connection to the three-point hitch on the vehicle, with the two outer mounting points located on opposite sides of the central mounting point. The central mounting point can be positioned above the two outer mounting points.

[0021] In one embodiment, the central fastening point is arranged at the level of the nested profile elements or adjacent to them. The two outer fastening points can then be located below the nested profile elements.

[0022] Frame sections of the vehicle-side mounting device, on which the two outer mounting points are formed, can be connected to the end sections of the first profile element. With the aid of these frame sections, the two outer mounting points can be offset inwards along the longitudinal direction of the profile element assembly relative to the end sections of the first profile element.

[0023] The mower-side mounting device can have at least one of the following features for the detachable attachment of the mower: an A-frame mounting device and a mower-side three-point mounting. The A-frame mounting device and / or the mower-side three-point mounting can be arranged on the front of the profile element assembly, for example by means of a welded connection. In one embodiment, the A-frame mounting device is arranged on the front of the second profile element, for example, centrally with respect to the second profile element.

[0024] The actuator assembly can be housed in an internal cavity of the profile element assembly. The actuator assembly can be designed with an electric, pneumatic, and / or hydraulic actuator. For example, an electric, pneumatic, and / or hydraulic cylinder can be provided to effect the relative displacement of the nested profile elements, for example, due to a change in the cylinder's length.

[0025] At least one additional mowing device may be arranged at the rear of the work vehicle. The mowing device arranged at the front of the work vehicle covers a first mowing area, and the at least one additional mowing device arranged at the rear of the work vehicle covers a second mowing area, perpendicular to the direction of work or travel.

[0026] The work vehicle can be equipped with additional mowing devices on both opposite sides at the rear, extending or supplementing the mowing area covered by the front mowing device on both sides in a direction transverse to the working direction of the work vehicle. The lateral adjustability of the front mowing device allows for an overlapping (optimized partial overlap) or non-overlapping configuration of the mowing areas of the front and rear mowing devices, at least at the edges of their respective mowing areas.

[0027] The work vehicle could be, for example, a tractor.

[0028] In one embodiment, the fastening device on the work vehicle side can be formed on only one side with respect to the longitudinal direction of the profile element arrangement, while the fastening device on the mower side is arranged on the opposite side with respect to the longitudinal direction of the profile element arrangement. Description of exemplary implementations

[0029] Further examples of implementation are explained below with reference to figures in a drawing. These figures show: Fig. 1 a schematic perspective representation of an agricultural mowing machine with a front mowing device and rear mowing devices; Fig. 2 a schematic perspective representation of a fastening system for attaching a mowing device to the front of an agricultural work vehicle with a view to a work vehicle-side fastening device; Fig. 3 a schematic perspective representation of the fastening system made of Fig. 2 with regard to a mower-side fastening device; Fig. 4 a schematic representation of the fastening system made of Fig. 2 from the front with the mower-side mounting device in a first working position and Fig. 5 a schematic representation of the fastening system made of Fig. 2 from the front with the mower-side fastening device in a second working position, which is laterally displaced compared to the first working position.

[0030] Fig. Figure 1 shows a schematic perspective view of an agricultural mowing machine 1, in which a front-mounted mowing device 3 and rear-mounted mowing devices 4, 5 are arranged on a tractor 2. The mowing devices 3, 4, 5 are each configured to mow crops, in particular grass. Such mowing devices are known as such in various embodiments. In order to create non-overlapping working mowing areas for the front-mounted mowing device 3 and the rear-mounted mowing devices 4, 5 in a direction transverse to a working or travel direction A, the front-mounted mowing device 3, in particular, can be moved into different working positions in a direction transverse to the working direction A.

[0031] Fig. Figure 2 shows a schematic perspective view of a fastening system 10 with which the front-mounted mowing device 3 is attached to the front of the agricultural work vehicle designed as a tractor 2. The fastening system 10 is shown with a view of a mounting device 11 on the work vehicle side.

[0032] The fastening system 10 has a profile element arrangement 12 with a first profile element 13, which is inserted into a cavity 14 of a second profile element 15. An actuator device (e.g., Fig. 4), which in the illustrated embodiment is formed with an actuator arranged within the profile element arrangement 12, the first profile element 13 can be moved laterally along the longitudinal direction of the second profile element 14 on the second profile element 15 transversely to the working or driving direction of the work vehicle 2 into various working positions. Fig. 4 and Fig. Figure 5 shows two different working positions in which the second profile element 15 is in the longitudinal direction of the first profile element 13 relative to it and thus relative to the tractor 2 (see Figure 5). Fig. 1) has been moved into different positions.

[0033] In the fastening system 10, the vehicle-side fastening device 11 is formed on the first profile element 13. The vehicle-side fastening device 11 has lateral frame sections 16, 17, which extend from opposite end sections 18, 19 of the first profile element 13 and are, for example, welded to them. Outer fastening points 20, 21 are formed on the frame sections 16, 17, which, in the example shown, are offset inwards in the longitudinal direction of the profile element arrangement 12 with respect to the opposite end sections 18, 19.

[0034] A central attachment point 22 is formed on the rear of the second profile element 15 in the direction of travel or work, so that the work vehicle-side attachment device 11 is set up for connection with a three-point mounting on the front of the work vehicle 2.

[0035] With regard to the longitudinal direction of the profile element arrangement 12, according to Fig. 3 On the opposite side, a mower-side mounting device 23 is provided, which in the illustrated embodiment is designed with an A-frame mounting device 24 (with an A-shape) that is designed for the detachable mounting of the front-side mower device 3. The A-frame mounting device 24 is arranged on the second profile element 15 and is thus displaceable together with it in the longitudinal direction of the profile element arrangement 12 relative to the second profile element 15.

[0036] In the example shown, the first and second profile elements 13, 15 each have a hexagonal cross-sectional profile, with the respective profile side surfaces 13a, 15a being arranged upright and opposite each other.

[0037] In the illustrated embodiment, the first profile element 13 extends continuously through the second profile element 15, so that the overlap length between the first and the second profile element 13, 15 remains constant when the second profile element 15 is moved on and along the first profile element 13 in a direction transverse to the working direction, both during the moving movement and in the different moving positions.

[0038] Fig. 4 and Fig. Figure 5 shows the second profile element 15 in opposite end positions (working positions) relative to the first profile element 13. This shifts the mower-side mounting device 23 into different working positions and thus the front-side mower device 3 to be mounted thereon (see Figure 5). Fig. 1) To laterally displace the second profile element 15, an actuator 25 is activated, which is located in Fig. 4 shown schematically and in the embodiment is taken up within the profile element arrangement 12.

[0039] An overlap length, i.e. a length in the longitudinal direction of the profile element arrangement 12, in which the first and the second profile elements 13, 15 overlap each other, is in the two in the Fig. 4 and Fig. The 5 working positions shown are the same, in the example shown also during the relocation of the second profile element 15 between the two working positions.

[0040] The features disclosed in the foregoing description, the claims and the drawing can be important for the realization of the various embodiments, both individually and in any combination.

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