DE202020100869U1 - Mower arrangement - Google Patents

Abstract

Mower arrangement for attachment to a carrier vehicle, which has an attachment (3), on which at least one strut (5) is arranged, which connects to a frame (6), and which has three cutter bars (4.1, 4.2, 4.3), characterized in that only one frame (6) is provided, on which the front cutter bar (4.1) is attached and on which the two lateral cutter bars (4.2, 4.3) are also flanged.

Description

The invention relates to a mower arrangement for attachment to a carrier vehicle, which has an attachment, on which at least one strut is arranged, which connects to a frame, and which has three cutter bars.

The basic structure of mower arrangements or mower combinations for mowing an area is known. These can be provided either as attachments for attachment to an agricultural carrier vehicle or as part of a self-propelled agricultural harvesting machine.

Mower arrangements of the type considered here have three mower units. Variants are known in which one of the mower units is designed as a front mower and the remaining two mower units are formed by side mowers. The lateral mowers are either mounted on the rear of the agricultural carrier vehicle via at least one mounting frame or are combined to form a mower arrangement via a common structure.

The mower type is in particular a double-knife mower. Such mowers include a knife back for an upper knife and a knife back for a lower knife, to which a plurality of double knife cutting elements are attached. The upper and lower knives are driven to oscillate back and forth.

The mower arrangement of the type considered here is one in which all three mower units are mounted on the front of the agricultural carrier vehicle (so-called butterfly arrangement). Such a mower arrangement is for example from the DE 10 2015 014 274 A1 known.

In the known mower arrangement, a frame-like mounting frame is provided on the lifting mechanism of the carrier vehicle with the interposition of an attachment part. The mounting frame has a frame base which extends at right angles to the longitudinal axis of the vehicle. On the frame base, on the one hand, bearing arms extending in the longitudinal direction of the vehicle are arranged, at the ends facing away from the vehicle a frame is provided for fastening the middle mower. On the other hand, trusses are arranged on both sides of the frame base, each of which serves to fasten the lateral mowers.

The known mower arrangement fulfills the tasks placed on it. However, it is disadvantageous that the provision of the bearing arms extending in the longitudinal direction of the vehicle means that the middle mower is positioned very far in front of the vehicle. On the one hand, this has the disadvantage that the center of gravity of the entire mower arrangement shifts relatively far in front of the vehicle, which has an unfavorable effect on the center of gravity of the vehicle with the mower arrangement attached. In addition, due to the bearing arms, the distance between the side mowers and the center mower in the longitudinal direction of the vehicle is quite large. This means that there must be a large overlap between the side mowers and the center mower transversely to the longitudinal direction of the vehicle in order to avoid that no grass remains when cornering. Due to the large overlap, the working width of the mower arrangement is reduced.

Against this background, it is an object of the present invention to provide a mower arrangement which, on the one hand, has a center of gravity close to the carrier vehicle and, on the other hand, requires a slight overlap of the side mowers with the middle mower. According to the invention, this object is achieved with the features of claim 1.

With the invention, a mower arrangement is created which, due to the arrangement of all mowers on the same frame, enables a center of gravity close to the carrier vehicle. In addition, the distance between the lateral mowers with the central mower in the longitudinal direction of the vehicle is small, which is why only a slight overlap of the lateral with the central mower is required to ensure that no grass remains when cornering.

The frame advantageously has supporting elements, on each of which a kinematics is arranged. The kinematics form a collision safety device that, in the event of an overload, on the side cutter bars, which allows the booms with the cutter bars to swing backwards against the direction of travel. Such an overload can occur, for example, when a cutter bar hits an obstacle. In this way, the risk of damage to the side mowers is significantly reduced.

In a development of the invention, the frame can be moved to the attachment. In this way, the cutter bars can be avoided in the event of uneven ground. The frame can therefore perform a relative movement to the vehicle together with the cutter bars during mowing.

In another development of the invention, the frame is pivotally arranged on the struts. This creates a collision safety device which, in the event of an overload on the central cutter bar, For example, when hitting an obstacle, the frame with all cutter bars can be swung back against the direction of travel.

• 1 a) die Ansicht eines landwirtschaftlichen Trägerfahrzeugs mit einer Mähwerksanordnung im Frontanbau;
• 1 b) die rückseitige Ansicht der in 1 a) dargestellten Anordnung;
• 1 c) die Draufsicht auf die in 1 a) dargestellte Anordnung;
• 2 die vergrößerte abschnittsweise Darstellung der in 1 c) dargestellten Draufsicht;
• 3 die perspektivische abschnittsweise Darstellung der erfindungsgemäßen Mähwerksanordnung;
• 4 die vergrößerte Seitenansicht der Darstellung aus 3;
• 5 die perspektivische Darstellung der in 4 gezeigten Anordnung;
• 6 a) die Ansicht der erfindungsgemäßen Mähwerksanordnung mit teilweise hochgeklappten seitlichen Mähwerken;
• 6 b) die Draufsicht auf die in 6 a) dargestellte Anordnung;
• 7 a) die Ansicht der erfindungsgemäßen Mähwerksanordnung mit vollständig hochgeklappten seitlichen Mähwerken;
• 7 b) die Draufsicht auf die in 7 a) dargestellte Anordnung;
• 8 a) die Draufsicht auf die Schwenklagerung des rechten seitlichen Mähwerks;
• 8 b) die perspektivische Darstellung der in 8 a) gezeigten Schwenklagerung;
• 9 die vergrößerte abschnittsweise Ansicht des in 1 dargestellten landwirtschaftlichen Trägerfahrzeugs mit Mähwerksanordnung;
• 10 die perspektivische Darstellung des in 9 gezeigten Trägerfahrzeugs;
• 11 die in 9 dargestellte Anordnung mit nach hinten weggeschwenkten Mähbalken;
• 12 die perspektivische Darstellung der in 11 gezeigten Anordnung.

Other developments and refinements of the invention are specified in the remaining subclaims. An embodiment of the invention is shown in the drawings and is described in detail below. Show it:

• 1 a) the view of an agricultural carrier vehicle with a mower arrangement in the front attachment;
• 1 b) the back view of the in 1 a) illustrated arrangement;
• 1 c) the top view of the in 1 a) arrangement shown;
• 2nd the enlarged sectional representation of the in 1 c) illustrated top view;
• 3rd the perspective section of the mower arrangement according to the invention;
• 4th the enlarged side view of the representation 3rd ;
• 5 the perspective view of the in 4th shown arrangement;
• 6 a) the view of the mower arrangement according to the invention with the side mowers partially folded up;
• 6 b) the top view of the in 6 a) arrangement shown;
• 7 a) the view of the mower arrangement according to the invention with the side mowers completely folded up;
• 7 b) the top view of the in 7 a) arrangement shown;
• 8 a) the top view of the pivot bearing of the right side mower;
• 8 b) the perspective view of the in 8 a) shown pivot bearing;
• 9 the enlarged sectional view of the in 1 shown agricultural carrier vehicle with mower arrangement;
• 10th the perspective view of the in 9 carrier vehicle shown;
• 11 in the 9 illustrated arrangement with cutter bars pivoted backwards;
• 12 the perspective view of the in 11 shown arrangement.

The mower arrangement selected as an exemplary embodiment is via a support structure 2nd on an agricultural carrier vehicle 1 assembled. The supporting structure 2nd is designed in a known manner in the form of a three-point attachment as a hoist. The mower arrangement is attached using an attachment 3rd , on the - in the exemplary embodiment - a PTO shaft connection (not shown) for driving the mower arrangement via the PTO shaft of the carrier vehicle 1 is provided. In a modification of the exemplary embodiment, the drive can also be, for example, via the hydraulics of the carrier vehicle 1 respectively. On the attachment 3rd are two hydraulic cylinders 3.1 articulated.

The mower arrangement selected as an exemplary embodiment has three mower units in the form of three cutter bars 4.1 , 4.2 and 4.3 on, all in the direction of travel F in front of the carrier vehicle 1 are positioned (so-called butterfly arrangement). The cutter bar 4.1 forms the front cutter bar in the middle; the cutter bars 4.2 and 4.3 form the side cutter bars. The side cutter bars 4.2 and 4.3 can be swiveled up. All cutter bars 4.1 , 4.2 and 4.3 have on their (bottom) side facing the floor - not shown - skids.

On the attachment 3rd is a V-shaped strut 5 arranged that connect to a frame 6 manufactures. The strut 5 is under the influence of the two hydraulic cylinders 3.1 . With the help of the hydraulic cylinders 3.1 can the frame 6 be lifted with all attachments. The frame 6 is therefore an attachment 3rd movable and swiveling on the strut 5 arranged. In addition, are on the attachment 3rd spaced from the strut on the side facing the floor 5 two support arms 7 arranged, also with the frame 6 stay in contact. The strut 5 and the support arms 7 are articulated on the attachment 3rd and the frame 6 arranged.

The frame 6 has a support element at each of its two ends 8th on, which is aligned vertically in the embodiment. At the end of the support elements facing the floor 8th is a sliding shoe 9 educated. On the slide shoes 9 are swath facilities 20th arranged, the crop to be targeted to the in the direction of travel behind the support elements 8th Guide the positioned components of the cutting unit past. On the frame 6 is between the support elements 8th the front cutter bar 4.1 assembled. The frame 6 is through the connection of striving 5 and support arms 7 vertically movable.

On the support elements 8th is a kinematics 10th arranged to attach the side cutter bar 4.2 and 4.3 on the frame 6 serve. The cutter bars 4.2 and 4.3 are articulated on the frame 6 flanged. It is on the side cutter bars 4.2 and 4.3 each boom 11 provided that about the kinematics 10th with the frame 6 are connected. The kinematics 10th is formed by struts on the front frame 6 are struck. About the kinematics 10th are the outriggers 11 movable on the frame 6 arranged. The kinematics form a collision safety device that is used in the event of an overload on the cutter bars 4.2 and 4.3 , which can occur, for example, when hitting an obstacle, the boom 11 with the cutter bars 4.2 and 4.3 to be able to swing backwards against the direction of travel F in order to reduce the risk of damage (cf. 11 , 12 ).

The outriggers 11 are each at their end facing the ground with a drive shoe 12 Mistake. In the drive shoes 12 is the drive for the side cutter bars 4.2 and 4.3 assembled. In the exemplary embodiment, this is a hydraulic drive. Also in the drive shoes 12 the articulated arrangement of the side mowers 4.2 and 4.3 realized. The articulated arrangement allows the side cutter bars to move 4.2 and 4.3 in order to be able to avoid unevenness in the ground that occurs on one of the mowers, for example.

Furthermore is in the drive shoes 12 the mechanism for swinging up the side mowers 4.2 and 4.3 arranged. The cutter bars 4.2 and 4.3 are with the drive shoes 12 screwed.

The drive shoes 12 have holes in the bearing bushes 14 are used (cf. 8th ). In the assembled state is in the bearing bushes 14 a bolt 15 guided, the pivot axis S for swinging up the side cutter bar 4.2 and 4.3 forms. The pivoting movement is effected by a hydraulically operated device. During the mowing operation, this hydraulic device is brought into a floating position, so that the cutter bars dodge 4.2 and 4.3 is not hindered in the event of uneven floors.

The hydraulically operated devices each comprise a hydraulic cylinder 16 , each on his the cutter bar 4.2 and 4.3 facing ends on a one handlebar 17th penetrating bolt is attached. The driver 17th is articulated on the drive shoe 12 attached. The driver 17th is therefore between the drive shoe 12 and the hydraulic cylinder 16 arranged. An actuation of the hydraulic cylinder 16 consequently causes the cutter bars to pivot 4.2 and 4.3 around the bolt 15 formed swivel axis S. With the help of the handlebar 17th is through the cylinder 16 a large swivel angle of the cutting unit can be realized. In addition, the handlebar allows 17th a free movement of the cutting unit independent of the floating position.

As in 8th can be seen, the swivel axis S is not perpendicular to the longitudinal center line of the cutter bars 4.2 and 4.3 ; the pivot axis S thus runs at a 90 ° to the longitudinal center line of the cutter bars 4.2 and 4.3 different angles. It is therefore not in the direction of travel or in the longitudinal direction of the carrier vehicle 1 aligned, but at an angle to it. In the exemplary embodiment, the angle is approximately 5 °. Other angles are of course also possible.

The angled orientation causes the free ends of the cutter bars 4.2 and 4.3 experience a shift in or against the direction of travel F when swiveling, as in the 6 b) and 7 b) can be seen. In their in 7 The cutter bar shown are the end position or transport position 4.2 and 4.3 arranged cross-wise (see 7 a) ). The cutter bars are in this end position 4.2 and 4.3 with their (upper) sides facing away from the ground on the outriggers in the operating position 11 on. The cantilevers are used for gentle support 11 therefore in the exemplary embodiment with damping elements 19th Mistake.

The cutter bars 4.1 , 4.2 and 4.3 are all on the frame as described above 6 attached; in the case of the side cutter bars 4.2 and 4.3 about the outrigger 11 . Hence the side cutter bars 4.2 and 4.3 in the operating position always at the same height as the cutter bar 4.1 . Because the frame 6 All cutter bars can be moved vertically via the hoist 4.1 , 4.2 and 4.3 from an operating position in which the cutter bar 4.1 , 4.2 and 4.3 with the skids resting on their underside lying on the ground, they are moved into a higher operating position spaced from the ground, for example to leave long-stemmed grass.

The full attachment of the cutter bars 4.1 , 4.2 and 4.3 on just one frame 6 offers various advantages: On the one hand, this means that there is a small distance from the carrier vehicle 1 caused, which has a favorable effect on the center of gravity. On the other hand, this design results in a short distance between the cutter bars. Because the side cutter bar 4.2 and 4.3 behind the cutter bar 4.1 there is only a slight overlap of the cutter bars 4.1 and 4.2 as well as the cutter bar 4.1 and 4.3 needed. This ensures that no grass remains even when cornering. The smaller the distance between the cutter bars, the smaller the necessary overlap, which is why the very small distance according to the construction according to the invention proves to be very advantageous. In addition, the complete attachment of all parts to the frame gives way 6 in the event of a collision of the front cutter bar 4.1 with an obstacle the whole frame 6 with all cutter bars 4.1 , 4.2 and 4.3 backwards / upwards like this in the 11 and 12 can be seen. If only the front cutter bar would move backwards, there would be a sufficient distance between the front cutter bar 4.1 and the side cutter bar 4.2 and 4.3 required.

QUOTES INCLUDE IN THE DESCRIPTION

This list of documents listed by the applicant has been generated automatically and is only included for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent literature cited

• DE 102015014274 A1 [0005]

Claims (9)

Mower arrangement for attachment to a carrier vehicle, which has an attachment (3), on which at least one strut (5) is arranged, which connects to a frame (6), and which has three cutter bars (4.1, 4.2, 4.3), characterized in that only one frame (6) is provided, on which the front cutter bar (4.1) is attached and on which the two lateral cutter bars (4.2, 4.3) are also flanged. Mower arrangement according to Claim 1 , characterized in that the cutter bars (4.2, 4.3) are flanged to the frame (6) in an articulated manner. Mower arrangement according to Claim 1 or 2nd , characterized in that the frame (6) has support elements (8), on each of which a kinematics (10) is arranged. Mower arrangement according to one of the preceding claims, characterized in that the frame (6) is movable to the attachment (3). Mower arrangement according to one of the preceding claims, characterized in that the frame (6) is arranged pivotably on the struts (5). Mower arrangement according to one of the preceding claims, characterized in that arms (11) are provided, each of which is provided with a drive shoe (12) at its end facing the ground. Mower arrangement according to Claim 6 , characterized in that in each case hydraulic cylinders (16) are provided on the arms (11). Mower arrangement according to one of the preceding claims, characterized in that a link (17) is arranged between the drive shoe (12) and the hydraulic cylinder (16). Mower arrangement according to one of the preceding claims, characterized in that the arms (11) are arranged movably on the frame (6).

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