MOWER

Description

[0001] The invention relates to a mower (see US10117379) according to the preamble of claim 1. DE 1 945 760 U discloses a cutter bar for a mowing machine. The cutter bar has several mowing elements positioned side by side in a row, the mowing elements comprising cutting discs. The cutting discs of immediately adjacent mowing elements overlap in a projection, with the cutting discs of immediately adjacent mowing elements being arranged in different planes. Thus, in a working position of the mower, first cutting discs of first mowing elements are arranged in a first, lower plane and second cutting discs of second mowing elements are arranged in a second, upper plane. Furthermore, a housing with a gear bar is shown, wherein sprockets extend in the gear bar of the housing, forming a transmission for driving the cutting discs. In the working position of the mower, the gear bar is arranged below the cutting discs.

[0002] During mowing, clippings can accumulate between the cutting discs and the gearbox bar, leading to blockages.

[0003] There is a need for a mower that reduces the risk of cut crop material accumulating between the mower discs and the gearbox bar, which can lead to blockages.

[0004] EP 3 942 919 A1 discloses an attachment for an agricultural harvesting machine for harvesting maize or grain. The attachment has cutting devices and rotating conveying devices. Each conveying device has conveying elements arranged above the cutting devices for transporting cut crop material.

[0005] EP 3 143 865 B1 discloses a further mower according to the prior art, the mower of which, however, does not have knife discs, but knife carriers with knives mounted on the knife carrier.

[0006] Based on this, the present invention aims to create a novel mower. This objective is achieved by a mower according to claim 1.

[0007] According to the invention, at least one first clearing element with a first length is arranged between each first cutter disc and the gearbox, and at least one second clearing element with a second length differing from the first is arranged between each second cutter disc and the gearbox. With the mower according to the invention, the risk of unintentionally cut material or harvested crop accumulating between the gearbox and the cutter discs can be reduced. This also reduces the risk of blockages in the mower. A clean and reliable crop flow is ensured.

[0008] Preferably, the length of the first clearing element is greater than the length of the second clearing element. This advantageously reduces the risk of crop or harvested material accumulating between the cutter discs and the gearbox.

[0009] Preferably, the cutting tips of each first cutter disc lie on a respective first circular path, and the cutting tips of each second cutter disc lie on a respective second circular path, wherein the first and second circular paths of immediately adjacent mowing elements overlap in projection, with one end of each first clearing element extending to the respective first circular path, and with one end of each second clearing element ending at a radial distance from the respective second circular path. This advantageously reduces the risk of unintentionally cut material or harvested crop accumulating between the gearbox and the cutter discs.

[0010] According to a first alternative, the second length of the respective second clearing element is dimensioned such that the end of the respective second clearing element ends at a distance from the respective first circular path of a respective immediately adjacent first knife disc.

[0011] According to a second alternative, the second length of the respective second clearing element is dimensioned such that the end of the respective second clearing element extends beyond the respective first circular path of a respective immediately adjacent first knife disc.

[0012] In the first alternative, and in the second alternative, the first and second clearing elements can be offset from each other by preferably 30° to 90° to provide a phase shift. Both alternatives reduce the risk of cut crop material or mowed material accumulating between the gearbox bar and the cutter discs.

[0013] Preferably, the first clearing elements have a first thickness and the second clearing elements have a second thickness, the second thickness being greater than the first. This also serves to further reduce the risk of crop or cut material accumulating between the gear bar and the cutter discs.

[0014] Preferably, each mowing element has, in addition to the respective cutting disc, a cutting flange against which the cutting disc is supported, with the respective clearing element being attached at least to the respective cutting flange. The respective clearing element may also be attached to the respective cutting disc. Preferably, the first, longer clearing elements are additionally attached to the cutting discs. This reduces the risk of damage to the respective clearing elements during mowing.

[0015] Preferably, the respective first clearing element and / or the respective second clearing element has a stepped, bent, or curved contour on its side facing the gearbox, adapted to the gearbox. This makes it possible to optimally clear the area between the gearbox and the cutter discs of cut material or harvested crop via the clearing elements, thus reducing the risk of crop material accumulating between the cutter bar and the cutter discs and causing blockages.

[0016] Preferred embodiments of the invention are described in the dependent claims and the following description. Exemplary embodiments of the invention are explained in more detail with reference to the drawing, without being limited thereto. The drawing shows: Fig. 1a a front view of a mower according to the invention; Fig. 1b a detail of the Fig. 1a Fig. 2a a view from below of the mower unit of the Fig. 1 without gearbox, namely on first and second mowing elements and first and second clearing elements, Fig. 2 leg detail of the Fig. 2a ; Fig. 3a a perspective view from below an alternative first mowing element and alternative first clearing elements, Fig. 3 leg detail of the Fig. 3a , Fig. 4a a perspective view from below another alternative first mowing element and alternative first clearing elements, Fig. 4 a detail of the Fig. 4a Fig. 5 a partial view from below of an alternative mower, namely of the first and second mowing elements and the first and second clearing elements, Fig. 6 a detail of the Fig. 5 in side view.

[0017] Fig. 1a Figure 1 shows a front view of a mower unit 1 of an agricultural harvesting machine. The mower unit 1 has several mowing elements 2a, 2b, which are positioned side by side in a row to form a cutter bar 3.

[0018] Each mowing element 2a, 2b has a cutting disc 4a, 4b. Fig. 2a shows a view from below of the cutting discs 4a, 4b of the mowing elements 2a, 2b.

[0019] The cutter discs 4a, 4b of immediately adjacent mowing units 2a, 2b are arranged alternately in different planes. Thus, in the working position of the mower 1, the first cutter discs 4a of the first mowing unit 2a are arranged in a first, lower plane and the second cutter discs 4b of the second mowing unit 2b are arranged in a second, upper plane.

[0020] The cutting discs 4a, 4b of the immediately adjacent mowing elements 2a, 2b overlap, either when viewed from above or below. This overlap of the cutting discs 4a, 4b of immediately adjacent mowing elements 2a, 2b can, in particular, Fig. 2a , 2b can be taken.

[0021] Each cutter disc 4a, 4b of each mower unit 2a, 2b is supported on a so-called cutter flange 5 of the respective mower unit 2a, 2b.

[0022] How Fig. 2a , 2bAs can be removed, the knife discs 2a, 2b have a circular outer contour, with the cutting tips 6a, 6b of each knife disc 4a, 4b lying on a respective circular path. Thus, the cutting tips 6a of each first knife disc 4a lie on a first circular path in the first, lower level, and the cutting tips 6b of the second knife discs 4b lie on a second circular path in the second, upper level.

[0023] The first circular path and the second circular path of immediately adjacent mowing elements 2a, 2b, and thus immediately adjacent cutting discs 4a, 4b, overlap in the projection, either from above or below. However, because the cutting discs 4a, 4b of immediately adjacent mowing elements 2a, 2b are arranged in different planes and at a distance from each other, the cutting discs 4a, 4b can rotate freely.

[0024] The mower unit 1 also has a housing 7, which includes a so-called gearbox 8. In the working position of the mower unit 1, the gearbox 8 is located below the mowing elements 2a, 2b and thus below the cutting discs 4a, 4b thereof. A gearbox is at least partially arranged in the gearbox 8, which serves to drive the cutting discs 4a, 4b from a drive 9 of the mower unit 1.

[0025] The drive 9 is designed according to Fig. 1a together with a deflecting element 10, arranged on a first side of the mower 1 or the cutter bar 3. On the opposite side of the mower 1 or cutter bar 3, only the deflecting element 10 is present.

[0026] As explained above, in the working position of the mower 1, the gearbox 8 is located below the mowing units 2a, 2b and therefore below the cutter discs 4a, 4b. In the working position of the mower, the first cutter discs 4a of the first mowing units 2a are located in a first, lower plane, and the second cutter discs 4b of the second mowing units 2b are located in a second, upper plane, each above the gearbox 8. The gearbox 8 is thus located below these two planes of the first and second cutter discs 4a, 4b.

[0027] Between each first cutting disc 4a of a respective first mowing element 2a and the gear bar 8, at least one respective first clearing element 11a is arranged. In the exemplary embodiment of the Fig. 1a , 1b , 2a , 2bBetween each first cutter disc 4a and the gear beam 8, two first clearing elements 11a are arranged. Each first clearing element 11a has a first length. The first length extends radially along the respective first cutter disc 4a.

[0028] A second clearing element 11b is arranged between each second cutter disc 2b of the respective second mowing unit 2b and the gear bar 8. In the exemplary embodiment of the Fig. 1a , 1b , 2a , 2b Between the second cutter disc 4b of each second mowing unit 2b and the cutter bar 8, two second clearing elements 11b are arranged. Each second clearing element 11b has a second length that differs from the first length of the first clearing elements 11a. This second length extends radially along the respective second cutter disc 4b.

[0029] According to Fig. 2a , 2bThe first lengths of the first clearing elements 11a are greater than the second lengths of the second clearing elements 11b. These lengths define the extension of the clearing elements 11a, 11b in the radial direction of the mowing elements 2a, 2b and in the radial direction of the cutter discs 4a, 4b, respectively.

[0030] Then, if, as shown in the exemplary embodiment, two clearing elements 11a, 11b are arranged between the respective cutter discs 4a, 4b and the cutter bar 8, these clearing elements 11a and 11b are diametrically opposed to each other. This prevents an imbalance. If only one clearing element is present between the respective cutter disc 4a, 4b and the respective cutter bar 8, a counterweight is preferably installed on the respective cutter disc 4a, 4b to prevent an imbalance.

[0031] In the exemplary embodiment of the Fig. 2a , 2bOne end of each first clearing element 11a extends to the respective first circular path on which the cutting tips 6a of the respective first knife disc 4a are located. The radially outer ends of each second clearing element 11b terminate at a radial distance from the respective second circular path on which the cutting tips 6b of the respective second knife disc 4b are positioned.

[0032] In the exemplary embodiment of the Fig. 2a , 2b The length of the respective second clearing element 11b is dimensioned such that the end of the respective second clearing element 11b ends at a distance from the respective first circular path of a respective immediately adjacent first knife disc 4a, on which the cutting tips 6a of the respective immediately adjacent first knife disc 4a are arranged.

[0033] In contrast, they Fig. 5, 6 An alternative embodiment of a mower 1, in which the second length of the respective second clearing element 11b is dimensioned such that the end of the respective second clearing element 11b extends beyond the respective first circular path of a respective immediately adjacent first cutter disc 4a of an immediately adjacent mower 2a, in which, therefore, the radial extension of a respective second clearing element 11b intersects the first circular path of a respective immediately adjacent first cutter disc 4a. It is then provided that the first clearing elements 11a and the second clearing elements 11b of the immediately adjacent cutter discs 4a, 4b are offset from each other circumferentially in order to provide a phase shift between the first and second clearing elements 11a, 11b such that they cannot touch each other during rotation in operation.

[0034] In particular, the first clearing elements 11a and the second clearing elements 11b of the immediately adjacent knife discs 4a, 4b are offset from each other by an angle of 30° to 90° in the circumferential direction.

[0035] According to Fig. 6 Each second clearing element 11a has a recess 12 into which the immediately adjacent cutting disc 4a of an immediately adjacent mowing element 2a extends. Each second clearing element 11a therefore has a first, upper section, which is radially spaced from the immediately adjacent cutting disc 4a of the immediately adjacent first mowing element 2a, and a second, lower section, which overlaps the immediately adjacent cutting disc 4a of the immediately adjacent mowing element 2a in projection and projects into a free space 13 between the cutting disc 4a of the immediately adjacent mowing element 2a and in the gear bar 8.

[0036] The first clearing elements 11a have a first thickness, and the second clearing elements 11b have a second thickness, the second thickness being greater than the first. The thickness of the clearing elements depends in particular on the distance of the respective cutter discs 4a, 4b of the respective mowing element 2a, 2b from the gearbox 8. If more than one clearing element 11a, 11b acts in conjunction with a cutter disc 4a, 4b, the respective clearing elements 11a, 11b can have different thicknesses.

[0037] The respective clearing elements 11a, 11b are attached in the area of ​​the respective mowing element 2a, 2b at least to the respective blade flange 5, in particular by screwing. This allows, in particular, Fig. 2b It can be deduced that each of the clearing elements 11a, 11b is attached via screws 14 to the respective knife flange 5 of the respective mowing element 2a, 2b, on which the respective knife disc 4a, 4b of the respective mowing element 2a, 2b is supported.

[0038] Fig. 3a, 3b Figure 1 shows an alternative embodiment of a first mowing element 2a with a first cutting disc 4a and three first clearing elements 11a. The three clearing elements 11a are evenly distributed around the circumference of the cutting disc 4a, and the clearing elements 11a are in turn attached to the respective cutting flange 5 by means of screws 14.

[0039] In Fig. 3a, 3b The first clearing elements 11a shown there are further attached to the cutter disc 4a by means that a projection 16 of each first clearing element 11a engages a projection 15 on the respective first cutter disc 4a of the respective first mowing element 2a, so that the first clearing element 11a is positively locked to the cutter disc 4a. According to Fig. 3a Each of the first clearing elements 11a shown there is attached on the one hand to the knife flange 5 via the screws 4a, and furthermore there is a positive fit between a projection 16 of each first clearing element 11a and a corresponding projection 15 of the knife disc 4a.

[0040] Fig. 4a, 4b Figure 1 shows further alternatives of the first mowing element 2a with a first cutting disc 4a and, in this case, two first clearing elements 11a, which are diametrically opposed to each other and are attached to the cutting flange 5 of the screws 14 via screws 14. Fig. 4a, 4b The first clearing elements 11a are attached to the first cutter disc 4a via further screws 17, which provides a corresponding screw point 18 for this purpose.

[0041] The clearing elements 11a, 11b have a contour adapted to the gear beam 8 on their side facing the gear beam 8. This contour can be stepped, convex, or curved to optimally cover the area to be cleared between the respective cutter disc 4a, 4b and the gear beam 8. This contour can be stepped, convex, or curved, depending on the corresponding contouring of the gear beam 8 on its side facing the cutter discs 4a, 4b. Reference symbol list

[0042] 1 Mower unit 2a Mower element 2b Mower element 3 Cutter bar 4a Blade disc 4b Blade disc 5 Blade flange 6a Cutting tip 6b Cutting tips 7 Housing 8 Gear bar 9 Drive 10 Deflection element 11a Clearing element 11b Clearing element 12 Recess 13 Clearance 14 Screw 15 Projection 16 Projection 17 Screw 18 Mounting point

Claims

1. Mower (1) of an agricultural harvester, comprising a plurality of mowing members (2a, 2b), which are positioned next to one another in a row to form a cutter bar (3), wherein each mowing member (2a, 2b) has a cutter disc (4a, 4b), wherein the cutter discs (4a, 4b) of directly adjacent mowing members (2a, 2b) are arranged alternately in different planes, namely, in the working position of the mower (1), first cutter discs (4a) of first mowing members (2a) are arranged in a first, lower plane and second cutter discs (4b) of second mowing members (2b) are arranged in a second, upper plane, wherein the cutter discs (4a, 4b) of directly adjacent mowing members (2a, 2b) overlap in one projection, comprising a housing (7) having a transmission bar (8), wherein a transmission, which serves to drive the cutter discs (4a, 4b), is at least partially arranged in the transmission bar (8), wherein the transmission bar (8) is arranged below the cutter discs (4a, 4b) in the working position of the mower, characterized in that at least one first clearing member (lla) with a first length is arranged between each first cutter disc (4a) and the transmission bar (8a) and at least one second clearing member (11b) with a second length differing from the first length is arranged between each second cutter disc (4b) and the transmission bar (8).

2. Mower according to Claim 1, characterized in that the first length of the first clearing members (11a) is greater than the second length of the second clearing members (11b).

3. Mower according to Claim 1 or 2, characterized in that cutting tips (6a) of each first cutter disc (4a) lie on a respective first circular path, cutting tips (4b) of each second cutter disc (4b) lie on a respective second circular path, the first circular path and the second circular path of directly adjacent mowing members (2a, 2b) overlap in the projection, one end of the respective first clearing member (lla) extends to the respective first circular path, one end of the respective second clearing member (11b) ends at a radial distance from the respective second circular path.

4. Mower according to Claim 3, characterized in that the second length of the respective second clearing member (11b) is dimensioned such that the end of the respective second clearing member (11b) ends at a distance from the respective first circular path of a respective directly adjacent first cutter disc (4a).

5. Mower according to Claim 3, characterized in that the second length of the respective second clearing member (11b) is dimensioned such that the end of the respective second clearing member (11b) extends beyond the respective first circular path of a respective directly adjacent first cutter disc (4a).

6. Mower according to one of Claims 1 to 5, characterized in that the first clearing members (11a) and the second clearing members (11b) are offset from one another by preferably 30° to 90° to provide a phase offset between the first clearing members (11a) and the second clearing members (11b) .

7. Mower according to one of Claims 1 to 6, characterized in that the first clearing members (11a) have a first thickness and the second clearing members (11b) have a second thickness, wherein the second thickness is greater than the first thickness.

8. Mower according to one of Claims 1 to 7, characterized in that each mowing member (2a, 2b) has a cutter flange (5) in addition to the respective cutter disc (4a, 4b), on which the respective cutter disc (4a, 4b) is supported, the respective clearing member (11a, 11b) is attached at least to the respective cutter flange (5).

9. Mower according to Claim 8, characterized in that the respective clearing member (11a, 11b) is additionally attached to the respective cutter disc (4a, 4b).

10. Mower according to one of Claims 1 to 9, characterized in that the respective first clearing member (11a) and / or the respective second clearing member (11b) has a stepped or curved or bent contour adapted to the transmission bar (8) on its side facing the transmission bar (8).