DE102021102772A1 - Mower arrangement - Google Patents

Abstract

The invention relates to a mower arrangement for mounting on a carrier vehicle with a frame (6) on which at least two cutter bars (4.2, 4.3) are arranged pivotably about a pivot axis (S) from an essentially horizontal working position into a transport position. The cutter bars (4.2, 4.3) are arranged crossed to one another in their transport position.

Description

The invention relates to a mower arrangement for attachment to a carrier vehicle with a frame on which at least two cutter bars are arranged such that they can be pivoted about a pivot axis from an essentially horizontal working position into a transport position

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 lateral 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 comprise 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 blades 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 DE 10 2015 014 274 A1 famous.

To drive the carrier vehicle with attached mowers in the aforementioned arrangement in public traffic, the laterally arranged mowers must be swiveled up. For this purpose, the mowers are swiveled into an approximately vertical position. After swiveling up, the mowers are secured in order to prevent them from falling back into the horizontal position in the event of a failure of the mechanics or hydraulics.

Due to the essentially vertical arrangement of the mowers in front of the driver's cab when driving, the driver's view is considerably restricted, especially when cornering and turning. In addition, the vertically positioned mowers entail a considerable increase in the risk of injury, especially in the event of a collision with pedestrians or cyclists, because they protrude relatively far outside the vehicle. In addition, due to the required securing after swiveling up, the ease of use is reduced.

Against this background, it is the object of the present invention to provide a mower arrangement which, on the one hand, results in less restriction of the field of vision in the highly pivoted state and, on the other hand, reduces the risk of injury in the event of an accident. According to the invention, this object is achieved with the features of claim 1.

With the invention, a mower arrangement is created which, when swiveled up, represents less obstruction to the view of the vehicle driver. Due to the crossed arrangement, the field of vision is significantly less restricted, especially when cornering and turning, because there are no laterally protruding obstacles. In addition, the side mowing units are positioned above the vehicle when they are swiveled up, so that the risk of a collision with the mowing units in the event of an accident is significantly reduced.

Preferably, outriggers are provided on the cutter bars, on which the cutter bars rest in their transport position. As a result of this configuration, there is no need for an additional securing device after pivoting up. This is caused by the fact that the cutter bars pivot from the horizontal working position beyond the vertical arrangement known from the prior art in the transport position in the direction of the vehicle. As a result, the center of gravity of the cutter bars is shifted in the direction of the vehicle, which is why the cutter bars are secured in the transport position by their own weight against falling back into the working position without additional safety measures.

• 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 rear view of the in 1 a) illustrated arrangement;
• 1 c) the top view of the in 1 a) illustrated arrangement;
• 2 the enlarged section view of the in 1 c) illustrated plan view;
• 3 the perspective sectional illustration of the mower arrangement according to the invention;
• 4th the enlarged side view of the illustration 3 ;
• 5 the perspective view of the in 4th arrangement shown;
• 6 a) the view of the mower arrangement according to the invention with partially folded up lateral mowers;
• 6 b) the top view of the in 6 a) illustrated arrangement;
• 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) illustrated arrangement;
• 8 a) the top view of the pivot bearing of the right side mower;
• 8 b) the perspective view of the in 8 a) pivot bearing shown;
• 9 the enlarged sectional view of the in 1 illustrated agricultural carrier vehicle with mower arrangement;
• 10 the perspective view of the in 9 carrier vehicle shown;
• 11 in the 9 The arrangement shown with the cutter bar pivoted to the rear;
• 12th the perspective view of the in 11 arrangement shown.

The mower arrangement chosen as an exemplary embodiment is via a support structure 2 on an agricultural carrier vehicle 1 assembled. The supporting structure 2 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 3 on which, in the exemplary embodiment, a power take-off shaft connection (not shown) for driving the mower arrangement via the power take-off shaft of the carrier vehicle 1 is provided. In a modification of the exemplary embodiment, the drive can, for example, also be via the hydraulics of the carrier vehicle 1 respectively. On the attachment 3 are two hydraulic cylinders 3.1 hinged.

The mower arrangement chosen 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 (lower) side facing the ground - not shown - skids.

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

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

On the supporting elements 8th each is a kinematic 10 arranged for attaching the side cutter bar 4.2 and 4.3 on the frame 6th serve. The cutter bars 4.2 and 4.3 are articulated on the frame 6th flanged. They are on the side cutter bars 4.2 and 4.3 each boom 11 provided via the kinematics 10 with the frame 6th are connected. The kinematics 10 is formed by struts attached to the front frame 6th are posted. About the kinematics 10 are the booms 11 movable on the frame 6th arranged. The kinematics form a collision protection, which is used in the event of an overload on the cutter bar 4.2 and 4.3 which can occur, for example, when an obstacle is encountered, the boom 11 with the cutter bar 4.2 and 4.3 to be able to swivel backwards against the direction of travel F in order to reduce the risk of damage (cf. 11 , 12th ).

The boom 11 are each with a drive shoe at their end facing the floor 12th Mistake. In the drive shoes 12th is the drive for the side cutter bars 4.2 and 4.3 assembled. In the exemplary embodiment, this is a hydraulic drive. In addition, is in the drive shoes 12th 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 bumps in the ground that occur on one of the mowers, for example.

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

The drive shoes 12th have holes in the bearing bushes 14th are used (cf. 8th ). When assembled, it is in the bearing bushes 14th a bolt 15th out of the swivel axis S for swiveling up the side cutter bar 4.2 and 4.3 forms. The pivoting movement is effected by a hydraulically operated device in each case. During the mowing operation, this hydraulic device is brought into a floating position, so that the cutter bar dodges 4.2 and 4.3 is not hindered in the case of uneven floors.

The hydraulically operated devices each include a hydraulic cylinder 16 each at its the cutter bar 4.2 and 4.3 facing ends on a handlebar 17th penetrating bolt is attached. The driver 17th is articulated on the drive shoe 12th attached. The driver 17th is consequently between the drive shoe 12th 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 to the one from the bolt 15th formed pivot axis S. With the help of the handlebar 17th is through the cylinder 16 a large swivel angle of the cutting unit can be achieved. 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 pivot axis S does not run at right angles to the longitudinal center line of the cutter bar 4.2 and 4.3 ; the pivot axis S consequently runs at 90 ° to the longitudinal center line of the cutter bar 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 this. 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 when pivoting up a shift in or against the direction of travel F, as in the 6 b) and 7 b) can be seen. In their in 7th The illustrated end position or transport position are the cutter bars 4.2 and 4.3 arranged crossed to each other (cf. 7 a) ). The cutter bars are in this end position 4.2 and 4.3 with their (upper) sides facing away from the ground in the operating position on the booms 11 on. The outriggers are for gentle support 11 in the exemplary embodiment therefore with damping elements 19th Mistake.

The cutter bars 4.1 , 4.2 and 4.3 are all on the frame as described above 6th attached; in the case of the side cutter bars 4.2 and 4.3 about the boom 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 6th can be moved vertically via the lifting mechanism, all cutter bars can 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 arranged on their underside resting on the ground, they can be moved into a higher operating position at a distance from the ground, in order, for example, to allow long-stalked grass to stand.

The complete attachment of the cutter bar 4.1 , 4.2 and 4.3 on just one frame 6th offers various advantages: On the one hand, there is a short distance to the carrier vehicle 1 caused, which has a positive effect on the center of gravity. On the other hand, this design results in a short distance between the cutter bars. Since 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, all parts are completely attached to the frame 6th in the event of a collision with the front cutter bar 4.1 with an obstacle the entire frame 6th with all cutter bars 4.1 , 4.2 and 4.3 backwards / upwards like this in the 11 and 12th can be seen. If only the front cutter bar were to move backwards, there would be a sufficiently large distance between the front cutter bar 4.1 and the side cutter bar 4.2 and 4.3 necessary.

QUOTES INCLUDED IN THE DESCRIPTION

This list of the documents listed by the applicant was generated automatically and is included solely 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 (6)

Mower arrangement for attachment to a carrier vehicle with a frame (6), on which at least two cutter bars (4.2, 4.3) are arranged pivotably about a pivot axis (S) from an essentially horizontal working position into a transport position, characterized in that the cutter bars (4.2 , 4.3) are arranged crossed to one another in their transport position. Mower arrangement according to Claim 1 , characterized in that the pivot axis S extends at an angle different from 90 ° to the longitudinal center line of the cutter bars (4.2, 4.3). Mower arrangement according to Claim 2 , characterized in that the angle is 85 ° or 95 ° to the longitudinal center line of the cutter bar (4.2, 4.3). Mower arrangement according to one of the preceding claims, characterized in that outriggers (11) are provided on the cutter bars (4.2, 4.3) on which the cutter bars (4.2, 4.3) rest in their transport position. Mower arrangement according to Claim 4 , characterized in that the arms (11) are provided with damping elements (19). Mower arrangement according to one of the preceding claims, characterized in that a link (17) is arranged between a drive shoe (12) and a hydraulic cylinder (16).

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