Corn header for a forage harvester and forage harvester with such a corn header

Abstract

Corn header (2) for a forage harvester (1) for harvesting stalk product, comprising several harvesting and feeding units (10) which have harvesting and feeding elements (11) rotating about a vertical or nearly vertical axis (22) for cutting product, in the working position of the corn header (2), viewed transversely to the direction of harvest, being arranged, laterally next to central harvesting and feeding units (10a), first lateral harvesting and feeding units (10b), laterally next to first lateral harvesting and feeding units (10b), second lateral harvesting and feeding units (10c) and, laterally next to second lateral harvesting and feeding units (10b), third lateral harvesting and feeding units (10c),the harvesting and feeding units (10) being pivotable relative to each other about horizontal or nearly horizontal pivot axes (16) for the transfer of the corn spout (2) between the working position and a transport position, such that each of the first lateral harvesting and feeding units (10b) is pivotable about a first pivot axis (16a) relative to the respective adjacent central harvesting and feeding unit (10), that each of the second lateral harvesting and feeding units (10c) is pivotable about a second pivot axis (16b) relative to the respective adjacent first lateral harvesting and feeding unit (10b), and that each of the third lateral harvesting and feeding units (10c) is pivotable about a third pivot axis (16c) relative to the second harvesting unit and respective adjacent lateral supply (10b),a pivot angle (α1) around the first pivot axes (16a) being 164° plus or minus 4°, a pivot angle (α2) around the second pivot axes (16b) being 180° plus or minus 4°, and a pivot angle (α3) around the third pivot axes (16c) being 184° plus or minus 4°. Figure for the abbreviation: Fig 6,

Description

Title of the invention: Corn header for a forage harvester and forage harvester with such a corn header

[0001] The invention relates to a corn header for a forage harvester. Furthermore, the invention relates to a forage harvester with such a corn header.

[0002] Among harvesting machines, a distinction is generally made between those in which the product is threshed and those in which the product is chopped. Therefore, when the product to be harvested is a type of cereal such as wheat, barley, oats, or rapeseed, harvesting machines designed as combine harvesters are generally used. Conversely, when the product is maize, miscanthus, or sorghum, the harvesting machines generally used are forage harvesters.

[0003] A harvesting machine configured as a combine harvester, in which a crop to be harvested is threshed, comprises a front-mounted tool with several harvesting elements that harvest the crop by cutting it in a scissor-like manner. Conversely, a harvesting machine configured as a forage harvester comprises a front-mounted tool configured as a corn header with several rotating harvesting elements. The present invention relates to a corn header of a harvesting machine configured as a forage harvester, in which the crop to be harvested is chopped and, consequently, not threshed.

[0004] Document DE 10 2004 022 534 Al discloses a harvesting machine configured as a forage harvester for harvesting stalk crops such as maize or the like. The harvesting machine includes a maize header, the maize header comprising several reaping and feeding units with rotating, drum-shaped reaping and feeding elements that rotate substantially about a vertical axis of rotation to cut the crop in a substantially horizontal direction.

[0005] In document DE 10 2004 022 534 A1, the corn header harvesting and feeding units are pivotable relative to each other in order to transfer the corn header between a working position and a transport position. Thus, in the working position, all the harvesting and feeding units viewed transversely to the direction of travel, respectively to the harvesting direction, are arranged side by side. In the transport position, the harvesting and feeding units are arranged one above the other on several planes.

[0006] Document 10 2014013 141 Al also discloses another harvesting machine configured as a forage harvester for harvesting stalk crops such as corn or the like. In this harvesting machine, portions of a front-mounted tool are pivotable, respectively foldable around pivot axes when transferring it from the working position to the transport position, so that the portions of the front tool are arranged in four layers extending one above the other.

[0007] There is a need for corn headers with increasingly larger working widths. Thus, there is a need for corn headers with a working width of up to 10.5 m or even up to 12 m. Such corn headers must also be transferable into a transport position that allows road transport of the header while coupled to the forage harvester.

[0008] Thus, in the transport position, the horizontal transport width of a corn header for road transport should not exceed approximately 3.3 m. Similarly, the stacking height of the corn header in the transport position should not be too great so that, during road transport, a driver still has a sufficiently wide field of vision on the road. With corn headers whose working width increases, it is difficult to achieve such a transport position. There is a need for a corn header that, even if it has a large working width of up to, for example, 12 m, can be transferred into a transport position that allows for unrestricted road transport.

[0009] Based on this observation, the present invention aims to provide a new type of corn header for a forage harvester, as well as a forage harvester with such a corn header. This aim is achieved by means of a corn header for a forage harvester.

[0010] The corn header comprises several harvesting and feeding units, each of which includes several harvesting and feeding elements rotating around a vertical or nearly vertical axis, driveable in rotation, in the form of drums or chains for cutting the product on a field to be worked in a substantially horizontal direction. In the working position of the corn header, viewed transversely to the direction of harvesting, are arranged, laterally next to the central harvesting and feeding units, the first lateral harvesting and feeding units, laterally next to the first lateral harvesting and feeding units, the second lateral harvesting and feeding units, and laterally next to the second lateral harvesting and feeding units, the third lateral harvesting and feeding units.The harvesting and feeding units are pivotable relative to each other around horizontal or nearly horizontal pivot axes for the transfer of the corn header between the working position and a transport position, such that each of the first lateral harvesting and feeding units is pivotable around a first pivot axis relative to the respective adjacent central harvesting and feeding unit, and that each of the second lateral harvesting and feeding units is. pivotable around a second pivot axis relative to the first adjacent harvesting and side-feeding unit, and each of the third adjacent harvesting and side-feeding units pivotable around a third pivot axis relative to the second adjacent harvesting and side-feeding unit. When transferring the corn header between the working and transport positions, the pivot angle around the first pivot axes is 164° ± 4°, the pivot angle around the second pivot axes is 180° ± 4°, and the pivot angle around the third pivot axes is 184° ± 4°. Such a corn header can be transferred into a transport position allowing for unrestricted road transport, even if it has a large working width, for example, up to 12 m.

[0011] Preferably, the pivot angle around the first pivot axes is preferably 164 plus or minus 2, preferably 164 plus or minus 1, and / or the pivot angle around the second pivot axes is 180 plus or minus 2, preferably 180 plus or minus 1, and / or the pivot angle (a3) ​​around the third pivot axes (16c) is 184 plus or minus 2, preferably 184 plus or minus 1. Such a corn spout can also be transferred into a transport position allowing unrestricted road transport.

[0012] Preferably, in the working position of the corn header, viewed transversely to the direction of harvesting, a horizontal distance between the axis of rotation of each of the central harvesting and feeding units and the first respective pivot axis is 695 plus or minus 25 mm, in particular 695 plus or minus 15 mm, and a horizontal distance between the axis of rotation of each of the first lateral harvesting and feeding units and the second respective pivot axis is 745 plus or minus 25 mm, in particular 745 plus or minus 15 mm, and a horizontal distance between the axis of rotation of each of the second lateral harvesting and feeding units and the third respective pivot axis is 640 plus or minus 25 mm, in particular 640 plus or minus 15 mm. Such a corn spout can also be transferred into a transport position allowing for unrestricted road transport.

[0013] Preferably, behind the harvesting and feeding units, viewed in the harvesting direction, are arranged feeding drums rotating about a vertical or nearly vertical axis, as well as turning drums, so that, in the working position of the corn header, viewed in the harvesting direction, behind the two central harvesting and feeding units is respectively arranged a feeding drum, and behind a delivery zone between each of the central harvesting and feeding units (10a) and the first lateral harvesting and feeding unit arranged laterally directly next to them is respectively arranged a first turning drum, and behind a delivery zone Between each of the first two lateral harvesting and feeding units and the second lateral harvesting and feeding unit positioned laterally next to them, a second turning drum is located for transferring the corn header between the working and transport positions. Each of the first two lateral harvesting and feeding units is pivotable in conjunction with one of the first turning drums relative to its respective adjacent central harvesting and feeding unit, and each of the second two lateral harvesting and feeding units is pivotable in conjunction with one of the second turning drums relative to its respective adjacent first harvesting and feeding unit. Such a corn header can be transferred into a transport position allowing for unrestricted road transport, even if it has a large working width, for example, up to 12 meters.

[0014] Preferably, a taper angle of a frustoconical wrap of the respective first turning drum is adapted to the first pivot angle of the respective first harvesting and side-feeding unit, so that, in the transport position of the corn spout, a laterally outside side or a laterally outside edge of the frustoconical wrap extends parallel or almost parallel to a straight line or plane extending in the vertical direction, which limits an permissible transport width of the corn spout on one side.The taper angle of a frustoconical wrap of the respective second turning drum is adapted to the second pivot angle of the respective second harvesting and side-feeding unit, so that, in the transport position of the corn header, an inner side or inner edge of the frustoconical wrap extends parallel or nearly parallel to a central line or plane that extends centrally between the two lines or planes defining the permissible transport width of the corn header. Such a corn header can also be transferred into a transport position allowing unrestricted road transport.

[0015] Preferably, each of the first two turning drums is a scraper element comprising several scraper tabs and pivotable with the respective first turning drum relative to the adjacent central harvesting and infeed unit. Preferably, in the transport position of the corn header, a path on which edges of the respective scraper element are located opposite scraper edges of the scraper tabs does not intersect a respective straight line or plane laterally defining a transport width and extending in the vertical direction. In particular, the respective path extends, in the transport position of the corn header, parallel or nearly parallel to the respective straight lines or planes extending in the vertical direction.

[0016] Preferred improvements of the invention will become apparent upon reading the subclaims and the description below. Examples of embodiments of the invention will be shown in more detail, without limitation, with reference to the drawings. These show:

[0017] [Fig-1] a side view of a forage harvester with a corn header;

[0018] [Fig.2] a schematic view of subgroups of a corn spout according to the invention in the transport position of the latter, in a view taken opposite to a direction of travel, or respectively to a direction of harvesting of the forage harvester;

[0019] [Fig.3] a schematic view of subgroups of a corn spout according to the invention in the transport position of the latter, in a view taken in the direction of travel, respectively in the direction of harvesting of the forage harvester;

[0020] [Fig.4] a perspective top view of subgroups of the maize beak according to the invention in its working position;

[0021] [Fig.5] detail V of [Fig.4];

[0022] [Fig.6] detail VI of [Fig.3].

[0023] Fig. 1 shows a harvesting machine configured as a forage harvester 1. The forage harvester 1 includes a front tool 2 which is coupled to a carrier vehicle 3 and is moved by the carrier vehicle 3 for harvesting work in the direction of travel which corresponds to the harvest direction F. In the case of the front tool 2, it is a "corn header" for cutting and picking up stalk products such as, for example, corn, miscanthus or sorghum.

[0024] The product cut using the front tool 2 is moved inside the front tool by means of the front tool 2 and reprocessed by a chopping system 4 of the forage harvester 1. The chopping system 4 includes a rotating chopping drum 5 and a drum panel 6 arranged below the chopping drum 5.

[0025] Downstream of the chopping system 4 of the forage harvester 1, a conditioning unit 7 is preferably arranged, and downstream of the conditioning unit 7, a distributor-accelerator 8 is arranged. The conditioning unit 7 is also referred to as a grain cracker. The distributor-accelerator 8 serves in particular to impart kinetic energy to the product in order to convey it at a sufficient transport speed through an ejector elbow 9.

[0026] The front tool 2 of the forage harvester 1, shaped like a corn header, has several harvesting and feeding units 10, each harvesting and feeding unit 10 comprising several harvesting and feeding elements 11 rotating about a vertical or nearly vertical axis of rotation 22, driven in rotation and in the form of drums. This rotation of the feeding units 10 about a respective vertical or nearly vertical axis of rotation 22 takes place in the working position of the corn header 2. A nearly vertical axis extends substantially in the vertical direction and can be inclined by relative to the vertical direction, for example, at a maximum of 5° or 10°. The rotating harvesting and feeding elements 11 of the corn spout 2 serve to separate the product in a substantially horizontal direction. The harvesting and feeding elements 11 of the corn spout 2 are equipped with conveying elements. It should be specified at this stage that the rotating harvesting and feeding elements 11 of the harvesting and feeding units 10 of the corn spout 2 can be configured as chain-shaped harvesting and feeding elements 11.

[0027] Downstream, viewed in the harvesting direction F, of the central harvesting and feeding units 10a of the corn header 2, which can rotate respectively around an axis of rotation 22a, are positioned feeding drums 12 that convey the product towards a feeding system 13 of the forage harvester 1. The feeding drums 12 are arranged, viewed in the harvesting direction F, behind the central harvesting and feeding units 10 and can rotate around a vertical or nearly vertical axis. A nearly vertical axis extends substantially in the vertical direction and can be inclined or placed at an angle to the vertical direction, for example, by a maximum of 5° or 10°.

[0028] In the working position of the corn spout 2, a first side harvesting and feeding unit 10b is arranged laterally next to a respective central harvesting and feeding unit 10a, which rotates about an axis of rotation 22b, as can be best seen in [Fig. 4]. In a storage area between each first side harvesting and feeding unit 10b and the central harvesting and feeding unit 10a, a first turning drum 14 is arranged, which rotates about a vertical or nearly vertical axis. A nearly vertical axis extends substantially in the vertical direction and can be inclined or placed at an angle to the vertical direction, for example, by a maximum of 5° or 10°.

[0029] In the working position, a second harvesting and side-feeding unit 10c, which rotates about an axis of rotation 22c, is externally attached to the first harvesting and side-feeding unit 10b. A second turning drum 15 is located in a storage area between the second harvesting and side-feeding unit 10c and the adjacent first harvesting and side-feeding unit 10b. The second turning drum 15 can rotate about a vertical or nearly vertical axis. A nearly vertical axis extends substantially in the vertical direction and can be inclined or angled relative to the vertical direction, for example, by a maximum of 5° or 10°.

[0030] A third harvesting and side-feeding unit 10d, which rotates about an axis of rotation 22d, is then attached externally to the respective second harvesting and side-feeding unit 10c. In the delivery zone between the second reaping and side feeding unit 10c and the third reaping and side feeding unit lOd no turning drum is provided due to the direction of rotation of the reaping and feeding devices, which is visualized on [Fig.4] by arrows R.

[0031] It can be seen in [Fig. 4] that the third harvesting and lateral feeding unit 10d rotates around the axis of rotation 22c in the opposite direction to the adjacent second harvesting and lateral feeding unit 10c. The second harvesting and lateral feeding unit 10c rotates around the axes of rotation 22b, 22a in the same direction as the first adjacent harvesting and lateral feeding unit 10b and the adjacent central harvesting and feeding unit 10a.

[0032] The harvesting and feeding units 10 of the corn spout 2 are movable from the working position of [Fig.4] to the transport position of [Fig.2], 3. On [Fig.2], 3 and 5 are schematically shown axes 16 around which the harvesting and feeding units 10 are movable relative to each other, namely pivotable, respectively foldable, during the movement between the working position and the transport position and vice versa during the movement between the transport position and the working position.

[0033] Figs. 3 and 4 thus show that the first respective side harvesting and feeding unit 10b is foldable, preferably pivotable relative to the respective adjacent and fixed central harvesting and feeding unit 10a around an axis 16a extending in a horizontal or approximately horizontal direction.

[0034] The second respective side harvesting and feeding unit 10c is pivotable, respectively foldable relative to the first respective side harvesting and feeding unit 10b around a horizontal or approximately horizontal axis 16b.

[0035] In addition, the third respective harvesting and side-feeding unit lOd is also pivotable, respectively foldable relative to the second respectively adjacent harvesting and side-feeding unit 10c around a pivot axis 16c extending horizontally or approximately.

[0036] An approximately horizontal axis 16 extends substantially in the horizontal direction and can be inclined or placed at an angle, for example to a maximum of 5° or 10°, with respect to the horizontal direction.

[0037] During the transfer of the corn spout 2 between the working position and the transport position, a pivot angle a1 around the first pivot axes 16a of the corn spout 2 is 164° plus or minus 4°, and a pivot angle a2 around the second pivot axes 16b of the corn spout 2 is 180° plus or minus 4°, and a pivot angle a3 around the third pivot axes 16c of the corn spout 2 is 184° plus or minus 4°.

[0038] Preferably, during the transfer of the corn spout 2 between the working position and the transport position, a pivot angle al around the first pivot axes 16a is 164° plus or minus 2°, and / or a pivot angle a2 around the second pivot axes 16b is 180° plus or minus 2°, and / or a pivot angle a3 around the third pivot axes 16c is 184° plus or minus 2°.

[0039] Particularly preferably, during the transfer of the corn beak 2 between the working position and the transport position, a pivot angle al around the first pivot axes 16a is 164° plus or minus 1°, and / or a pivot angle a2 around the second pivot axes 16b is 180° plus or minus 1°, and / or a pivot angle a3 around the third pivot axes 16c is 184° plus or minus 1°.

[0040] In the working position of the corn header 2, viewed transversely to the direction of harvest, a horizontal distance xa2 between the axis of rotation 22a of each of the central harvesting and feeding units 10a and the first respective pivot axis 16a is 695 plus or minus 25 mm, and a horizontal distance xb2 between the axis of rotation 22b of each of the first lateral harvesting and feeding units 10b and the second respective pivot axis 16b is 745 plus or minus 25 mm, and a horizontal distance xc2 between the axis of rotation 22c of each of the second lateral harvesting and feeding units 10c and the third respective pivot axis 16c is 640 plus or minus 25 mm.

[0041] Preferably, in the working position of the corn spout 2, the horizontal distance xa2 between the axis of rotation 22a of each of the central harvesting and feeding units 10b and the first respective pivot axis 16a is 695 plus or minus 15 mm, and / or the horizontal distance xb2 between the axis of rotation 22b of each of the first lateral harvesting and feeding units 10b and the second respective pivot axis 16b is 745 plus or minus 15 mm, and / or the horizontal distance xc2 between the axis of rotation 22b of each of the second lateral harvesting and feeding units 10c and the third respective pivot axis 16c is 640 plus or minus 15 mm.

[0042] Particularly and preferably, in the working position of the corn spout 2, the horizontal distance xa2 between the axis of rotation 22a of each of the central harvesting and feeding units 10b and the respective first pivot axis 16a is 695 ± 5 mm, and / or the horizontal distance xb2 between the axis of rotation 22b of each of the first lateral harvesting and feeding units 10b and the respective second pivot axis 16b is 745 ± 5 mm, and / or the horizontal distance xc2 between the axis of rotation 22b of each of the second units of harvesting and lateral feed 10c and the third respective pivot axis 16c is 640 plus or minus 5 mm.

[0043] In the working position of the corn header 2, viewed transversely to the harvesting direction, the first pivot axes 10a are located above the harvesting and feeding units 10 and a vertical spacing za of these with the top of the harvesting elements of the central harvesting and feeding units 10a is 325 plus or minus 25 mm.

[0044] The second pivot axes 16b are located below the harvesting and feeding units 10 and a vertical spacing zb of these with a top of the harvesting elements of the first lateral harvesting and feeding units 10 is 185 plus or minus 25 mm.

[0045] The third pivot axes 16c are located above the harvesting and feeding units 10 and a vertical spacing zc of these with a top of the harvesting elements of the second lateral harvesting and feeding units 10b is 350 plus or minus 25 mm.

[0046] Preferably, in the working position of the corn spout 2, the vertical distance za of the first pivot axes 16a with the top of the harvesting elements of the central harvesting and feeding units 10a is 325 plus or minus 15 mm, and / or the vertical distance zb of the second pivot axes 16b with the top of the harvesting elements of the first lateral harvesting and feeding units 10a is 185 plus or minus 15 mm, and / or the vertical distance zc of the third pivot axes (16c) with a top of the harvesting elements of the second lateral harvesting and feeding units 10b is 350 plus or minus 15 mm.

[0047] Particularly preferably, in the working position of the corn beak 2, the vertical distance za of the first pivot axes 16a with the top of the harvesting elements of the central harvesting and feeding units 10a is 325 plus or minus 5 mm, and / or the vertical distance zb of the second pivot axes 16b with the top of the harvesting elements of the first lateral harvesting and feeding units 10a is 185 plus or minus 5 mm, and / or the vertical distance zc of the third pivot axes 16c with a top of the harvesting elements of the second lateral harvesting and feeding units 10b is 350 plus or minus 5 mm.

[0048] In the working position of the corn header 2, viewed transversely to the harvesting direction, a horizontal distance xbl between the axis of rotation 22b of the first harvesting and respective side-feeding unit 10b and the first respective pivot axis 16a is 805 plus or minus 25 mm, and a horizontal distance xcl between the axis of rotation 22c of the second harvesting and respective side-feeding units 10c and the second respective pivot axis 16b is 755 plus or minus 25 mm, and a horizontal distance xdl between the axis of rotation 22d of each of the respective third lateral harvesting and feeding units lOd and the respective third pivot axis 16c is 860 plus or minus 25 mm.

[0049] Preferably, in the working position of the corn spout 2, the horizontal distance xbl between the axis of rotation 22b of the second respective harvesting and side-feeding unit 10b and the first respective pivot axis 16a is 805 plus or minus 15 mm, and the horizontal distance xcl between the axis of rotation 22c of the second respective harvesting and side-feeding units 10c and the second respective pivot axis 16b is 755 plus or minus 15 mm, and the horizontal distance xdl between the axis of rotation 22d of each of the third respective harvesting and side-feeding units lOd and the third respective pivot axis 16c is 860 plus or minus 15 mm.

[0050] Particularly preferably, in the working position of the corn beak 2, the horizontal distance xbl between the axis of rotation 22b of the second respective harvesting and side-feeding unit 10b and the first respective pivot axis 16a is 805 plus or minus 5 mm, and the horizontal distance xcl between the axis of rotation 22c of the second respective harvesting and side-feeding units 10c and the second respective pivot axis 16b is 755 plus or minus 5 mm, and the horizontal distance xdl between the axis of rotation 22d of each of the third respective harvesting and side-feeding units lOd and the third respective pivot axis 16c is 860 plus or minus 5 mm.

[0051] The first turning drums 14 are pivotable, respectively foldable around the respective pivot axes 16 jointly with the respective first side harvesting and feeding units 10b, and the second turning drums 15 are jointly with the respective second side harvesting and feeding units 10c, during the transfer of the corn spout between the working position and the transport position.

[0052] On [Fig.2] and 3, straight lines, respectively planes 17, 18 extending in the vertical direction symbolize a dimension of the corn spout 12 in the transport position transverse to the harvest direction F, the spacing between these planes, respectively straight lines 17, 18 corresponding to the maximum permissible transport width of the corn spout 2. This is preferably 3,270 mm.

[0053] A vertical stacking height of the corn spout 2 in its transport position is preferably 2,483 mm.

[0054] In the middle between these two lines, respectively, planes 17, 18, a central line, respectively, a central plane 19 is shown which extends in the middle between the two central harvesting and feeding units 10a.

[0055] A distance between the respective first pivot axis 16a and this central line, respectively this central plane 19 is 1445 plus or minus 25 mm, preferably 1445 plus or minus 15 mm, particularly preferably 1445 plus or minus 5 mm.

[0056] A distance between the first respective pivot axis 16a and the second directly adjacent pivot axis 16b is 1550 plus or minus 25 mm, preferably 1550 plus or minus 15 mm, particularly preferably 1550 plus or minus 5 mm.

[0057] A distance between the second respective pivot axis 16b and the third directly adjacent pivot axis 16c is 1550 plus or minus 25 mm, preferably 1395 plus or minus 15 mm, particularly preferably 1395 plus or minus 5 mm.

[0058] As already explained, to transfer the corn spout 2 between the working position and the transport position, the harvesting and feeding units 10 are pivotable and therefore foldable relative to each other around the pivot axes 16.

[0059] Each of the first lateral harvesting and feeding units 10b of the corn spout 2 is thus pivotable and therefore foldable, together with the first turning drum 14 associated therewith, relative to the respective adjacent central harvesting and feeding unit 10a of the corn spout 2, in such a way that a frustoconical enveloping of the respective first turning drum 14 and therefore the respective first turning drum 14, are entirely within the permissible transport width of the corn spout 2 defined by the lines or planes 17, 18 extending in the vertical direction in the transport position of the corn spout 2 shown in [Fig.2], 3.

[0060] The conical enveloping of the first turning drums 14 narrows from the corn spout 2 from top to bottom in the working position.

[0061] The feeding drums 12 of the corn spout 2 also narrow along a truncated conical enveloping which narrows however from bottom to top and consequently widens from top to bottom.

[0062] The second turning drums 15 of the corn spout 2 also have a truncated conical contour, and this in an orientation similar to the first turning drums 14, that is to say in such a way that, in the working position of the corn spout 2, the enveloping of the second turning drums 15 narrows from top to bottom and consequently widens from bottom to top.

[0063] As can be best seen in [Fig. 2] and 3, a first of the first turning drums 14 is adjacent, in the transport position of the corn spout 2, to a first of the two straight lines or planes 17 extending in the vertical direction, and a second of the first turning drums 14 is adjacent to a second of the two straight lines or planes 18 extending in the vertical direction, such that the frustoconical wrap of the respective first turning drum 14 does not intersect the respective straight lines or planes 17, 18 extending in the vertical direction. A taper angle of the frustoconical wrap of the respective first turning drum 14 is adapted to the pivot angle al of the respective first harvesting and side-feeding unit 10b, so that, in the transport position of the corn spout 2, a respective laterally external side or a respective laterally external edge of the respective frustoconical wrap of the respective first turning drum 14 extends parallel or almost parallel to the respective straight lines or planes 17, 18 extending in the vertical direction.

[0064] For the transfer of the corn spout 2 from the working position to the transport position, the second turning drums 15 are pivotable, together with the second side harvesting and feeding units 10c, around the axes 16b relative to the first side harvesting and feeding units 10b. In the transport position of the corn spout 2, the two second turning drums 15 are arranged, according to [Fig.2] and 3, on different sides of the central line or central plane 19 extending in the vertical direction, in the transport position of the corn spout 2 a first of the second turning drums 15 being adjacent to a first side and a second of the second turning drums 15 being adjacent to a second side of the central line or central plane 19 extending in the vertical direction, so that the frustoconical enveloping of the respective second turning drum 15 does not intersect the central line or central plane 19.A taper angle of the frustoconical wrap of the respective second turning drum 15 is adapted to the pivot angle, respectively to the pivot angle a2 of the respective second harvesting and external feed unit 10c, so that, in the transport position of the corn spout 2, a laterally inside side or a laterally inside edge of the respective frustoconical wrap of the respective second turning drum 15 extends parallel or almost parallel to the respective central line or central plane 19.

[0065] A scraper 21 comprising several scraper tabs 20 cooperates with each of the first two turning drums 14. Scraper 21 of this type are also associated with the second turning drums 15. The scraper 20 associated with the turning drums 14, 15 are pivotable, respectively, foldable, in conjunction with the respective turning drums 14, 15, during the transfer of the corn spout 2 between the working position and the transport position. Consequently, the scraper 21 associated with the first turning drums 14 are pivotable, respectively, foldable around the pivot axes 16a relative to the central harvesting and feeding units. 10a jointly with the first turning drums 14 and the first lateral harvesting and feeding units 10b. The scraping units 21 associated with the second turning drums 15 are pivotable, respectively foldable around the pivot axes 16b relative to the first lateral harvesting and feeding units 10b jointly with the second turning drums 15 and the second lateral harvesting and feeding units 10c.

[0066] The scraping tabs 20 of the scraping members 21 associated with the first turning drums 14 and therefore these scraping members 21 are located, in the transport position of the corn spout 2, together with the first turning drums 14, entirely within the transport width of the corn spout 2 defined by the straight lines or planes 17, 18 extending in the vertical direction.

[0067] The scraping tabs 20 have scraping edges as well as edges opposite the scraping edges, a path, on which are located the edges of the scraping tabs 20 of the respective scraping member 21 opposite the scraping edges, not cutting, in the transport position of the corn spout 2, the respective straight line or plane 17, 18 extending in the vertical direction. On the other hand, this path of the scraping organs 21 associated with the first turning drums 14, on which rest the edges of the scraping tongues 20 opposite the scraping edges of the scraping tongues 20, is preferentially parallel or almost parallel to the respective straights or planes 17, 18 extending in the vertical direction, in particular coincides with the respective laterally external side, in the transport position of the corn spout 2, of the frustoconical enveloping of the respective first turning drum 14.

[0068] As already explained, scraping elements 21 of this type are also associated with the second turning drums 15. These scraping elements are pivotable in conjunction with the respective second harvesting and side-feeding unit 10c relative to the adjacent respective first harvesting and side-feeding unit 10b. In the transport position of the corn spout 2, the scraping tabs 20 of the scraping element 21 associated with the first of the second turning drums 15 therefore rest on the first side, and the scraping tabs 20 of the scraping element 21 associated with the second of the second turning drums 15 rest on the second side of the central straight line or central plane 19.The respective path, on which the edges of the respective scraping organ 20 opposite the scraping edges of the scraping tabs 20, does not intersect the central line or the central plane 19 extending in the vertical direction, but extends preferentially parallel to it, in particular coinciding with the respective inner side in the transport position of the corn spout or with the respective inner edge of the frustoconical enveloping of the respective second turning drum 15.

[0069] Even with a corn header which has a working width of, for example, up to 12 m, the above design of the corn header 2 allows a compact transport position which allows road transport of the corn header 2 in a state coupled to the carrier vehicle 3. List of digital landmarks

[0070] 1 forage harvester

[0071] 2 front tool / corn spout

[0072] 3 carrier vehicle

[0073] 4 hashing system

[0074] 5 drum chopper

[0075] 6 drum panel

[0076] 7 conditioning equipment

[0077] 8 distributor-accelerator

[0078] 9 ejector elbow

[0079] 10 harvesting and feeding unit

[0080] 10a central harvesting and feeding unit

[0081] 10b first harvesting and side-feeding unit

[0082] 10c second harvesting and side-feeding unit

[0083] The third harvesting and side-feeding unit

[0084] 11 harvesting and feeding organ

[0085] 12 feed drum

[0086] 13 feed system

[0087] 14 reversing drum

[0088] 15 reversing drum

[0089] 16 pivot axis

[0090] 16a pivot axis

[0091] 16b pivot axis

[0092] 16c pivot axis

[0093] 17 right / plane

[0094] 18 right / plane

[0095] 19 central right / central plane

[0096] 20 scraping strip

[0097] 21 scraping organ

[0098] 22 axis of rotation

[0099] 22a axis of rotation

[0100] 22b axis of rotation

[0101] 22c axis of rotation

[0102] 22d axis of rotation

Claims

1. Demands Corn header (2) for a forage harvester (1) for harvesting stalk crop, comprising several harvesting and feeding units (10) which respectively include several harvesting and feeding elements (11) rotating about a vertical or nearly vertical axis (22), rotatable, in the form of drums or chains for cutting the crop on a field to be worked in a substantially horizontal direction, in the working position of the corn header (2), viewed transversely to the direction of harvest, being arranged, laterally next to central harvesting and feeding units (10a), first lateral harvesting and feeding units (10b), laterally next to first lateral harvesting and feeding units (10b), second lateral harvesting and feeding units (10c), and laterally next to second lateral harvesting and feeding units (10b), third units lateral harvesting and feeding (10c),the harvesting and feeding units (10) being pivotable relative to each other about horizontal or nearly horizontal pivot axes (16) for the transfer of the corn spout (2) between the working position and a transport position, such that each of the first lateral harvesting and feeding units (10b) is pivotable about a first pivot axis (16a) relative to the respective adjacent central harvesting and feeding unit (10), that each of the second lateral harvesting and feeding units (10c) is pivotable about a second pivot axis (16b) relative to the respective adjacent first lateral harvesting and feeding unit (10b), and that each of the third lateral harvesting and feeding units (10c) is pivotable about a third pivot axis (16c) relative to the second harvesting unit and respective adjacent lateral supply (10b),during the transfer of the corn spout (2) between the working position and the transport position, a pivot angle (al) around the first pivot axes (16a) being 164° plus or minus 4°, and a pivot angle (a2) around the second pivot axes, (16b) being 180° plus or minus 4°, and a pivot angle (a3) ​​around the third pivot axes (16c) being 184° plus or minus 4°, Behind the harvesting and feeding units (10), viewed in the harvesting direction, are arranged feeding drums (12) rotating around a vertical or nearly vertical axis, as well as turning drums (14, 15), so that, in the working position of the corn header (2), viewed in the harvesting direction, behind the two central harvesting and feeding units (10a) is respectively arranged a feeding drum (12), behind a delivery area between each of the central harvesting and feeding units (10a) and the first lateral harvesting and feeding unit (10b) arranged laterally directly next to them is respectively arranged a first turning drum (14), behind a retrieval zone between each of the first lateral harvesting and feeding units (10b) and the second lateral harvesting and feeding unit (10c) arranged laterally next to them is a second turning drum (15), for the transfer of the corn spout (2) between the working position and the transport position, each of the first lateral harvesting and feeding units (10b) being pivotable jointly with one of the first turning drums (14) relative to the respective adjacent central harvesting and feeding unit (10) and each of the second lateral harvesting and feeding units (10c) being pivotable jointly with one of the second turning drums (15) relative to the respective adjacent first harvesting and feeding unit (10),a taper angle of a frustoconical wrap of the respective first turning drum (14) is adapted to the first pivot angle (al) of the respective first harvesting and side-feeding unit (14b), so that, in the transport position of the corn spout (2), a laterally outside side or a laterally outside edge of the frustoconical wrap extends parallel or almost parallel to a straight line or plane (17, 18) extending in the vertical direction, which limits an permissible transport width of the corn spout (2) on one side, a taper angle of a frustoconical wrap of the second respective turning drum (15) is adapted to the second pivot angle (a2) of the second respective harvesting and side-feeding unit (10c), so that, in the transport position of the corn spout (2), a laterally inside side or a laterally inside edge of the frustoconical wrap extends parallel or almost parallel to a central line or central plane which extends centrally between the two lines or planes (17, 18) defining the permissible transport width of the corn spout.

2. Corn spout (2) according to claim 1, characterized in that, during the transfer of the corn spout (2) between the working position and the transport position, the pivot angle (al) around the first pivot axes (16a) is 164° plus or minus 2°, and / or the pivot angle (a2) around the second pivot axes (16b) is 180° plus or minus 2°, and / or the pivot angle (a3) ​​around the third pivot axes (16c) is 184° plus or minus 2°.

3. Corn spout (2) according to claim 1 or 2, characterized in that, during the transfer of the corn spout (2) between the working position and the transport position, the pivot angle (a1) around the first pivot axes (16a) is 164° plus or minus 1°, and / or the pivot angle (a2) around the second pivot axes (16b) is 180° plus or minus 1°, and / or the pivot angle (a3) ​​around the third pivot axes (16c) is 184° plus or minus 1°.

4. Corn header (2) according to any one of claims 1 to 3, characterized in that, in the working position of the corn header (2), viewed transversely to the harvesting direction, a horizontal distance (xa2) between the axis of rotation (22a) of each of the central harvesting and feeding units (10a) and the respective first pivot axis (16a) is 695 ± 25 mm, and a horizontal distance (xb2) between the axis of rotation (22b) of each of the first lateral harvesting and feeding units (10b) and the respective second pivot axis (16b) is 745 ± 25 mm, and a horizontal spacing (xc2) between the axis of rotation (22c) of each of the second lateral harvesting and feeding units (10c) and the respective third pivot axis (16c) is 640 plus or minus 25 mm.

5. Corn header (2) according to claim 4, characterized in that, in the working position of the corn header (2), the horizontal distance (xa2) between the axis of rotation (22a) of each of the central harvesting and feeding units (10b) and the respective first pivot axis (16a) is 695 ± 15 mm, and / or the horizontal distance (xb2) between the axis of rotation (22b) of each of the first lateral harvesting and feeding units (10b) and the respective second pivot axis (16b) is 745 ± 15 mm, and / or the horizontal distance (xc2) between the axis of rotation (22b) of each of the second lateral harvesting and feeding units (10c) and the respective third pivot axis (16c) is 640 plus or minus 15 mm.

6. Corn header (2) according to claim 4 or 5, characterized in that, in the working position of the corn header (2), the horizontal distance (xa2) between the axis of rotation (22a) of each of the central harvesting and feeding units (10b) and the respective first pivot axis (16a) is 695 ± 5 mm, and / or the horizontal distance (xb2) between the axis of rotation (22b) of each of the first lateral harvesting and feeding units (10b) and the respective second pivot axis (16b) is 745 ± 5 mm, and / or the horizontal distance (xc2) between the axis of rotation (22b) of each of the second lateral harvesting and feeding units (10c) and the respective third pivot axis (16c) is 640 plus or minus 5 mm.

7. Corn header (2) according to any one of claims 1 to 6, characterized in that, in the working position of the corn header (2), viewed transversely to the harvesting direction, the first pivot axes (10a) are located above the harvesting and feeding units (10) and a vertical distance (za) between these axes and the tops of the harvesting elements of the units the central harvesting and feeding unit (10a) is 325 plus or minus 25 mm, and the second pivot axes (16b) are located below the harvesting and feeding units (10) and a vertical distance (zb) from these to the top of the harvesting members of the first lateral harvesting and feeding units (10) is 185 plus or minus 25 mm, and the third pivot axes (16c) are located above the harvesting and feeding units (10) and a vertical distance (zc) from these to the top of the harvesting members of the second lateral harvesting and feeding units (10b) is 350 plus or minus 25 mm.

8. Corn header (2) according to claim 7, characterized in that, in the working position of the corn header (2), the vertical distance (za) of the first pivot axes (16a) with the top of the harvesting elements of the central harvesting and feeding units (10a) is 325 plus or minus 15 mm, and / or the vertical distance (zb) of the second pivot axes (16b) with the top of the harvesting elements of the first lateral harvesting and feeding units (10a) is 185 plus or minus 15 mm, and / or the vertical distance (zc) of the third pivot axes (16c) with a top of the harvesting elements of the second lateral harvesting and feeding units (10b) is 350 plus or minus 15 mm.

9. Corn header (2) according to claim 7 or 8, characterized in that, in the working position of the corn header (2), the vertical distance (za) of the first pivot axes (16a) with the top of the harvesting elements of the central harvesting and feeding units (10a) is 325 ± 5 mm, and / or the vertical distance (zb) of the second pivot axes (16b) with the top of the harvesting elements of the first lateral harvesting and feeding units (10a) is 185 ± 5 mm, and / or the vertical distance (zc) of the third pivot axes (16c) with a top of the harvesting elements of the second units of 20 harvesting and lateral feed (10b) is 350 plus or minus 5 mm.

10. Forage harvester (1) with a corn header (2) according to any one of claims 1 to 9.