BE1029742B1 - Mowing and intake device for a mower attachment for harvesting stalk-like plants with a scraper for removing impurities - Google Patents

Abstract

A mowing and intake device (10) for a mower attachment for harvesting stalk-like plants comprises: a cutting disc (22) for cutting off plants standing in a field, which is rotatably supported on a gear housing (14) via a retaining ring (20), at least one conveyor disc (24, 26) arranged above the cutting disc (22) with bulges distributed around its circumference for receiving plant stalks and at least one downwardly extending scraper assembly (38) fitted below the retaining ring (20) with a material made of an inherently flexible material existing element (40, 40') configured to cooperate with the gear housing (14) to remove contaminants from the gear housing (14).

Description

1 BE2022/0042

Mowing and intake device for a mower attachment for harvesting stalk-like plants with a scraper for removing

impurities

Description

The invention relates to a mowing and intake device for a mower attachment for harvesting stalk-like plants, comprising a cutting disc for cutting off plants that are standing in a field

Plants, which is rotatably supported on a gear housing via a retaining ring, have at least one conveyor disc arranged above the cutting disc with conveyor discs distributed around its circumference

lobes for receiving plant stalks; and at least one downwardly extending scraper assembly mounted below the retaining ring and having a member configured to cooperate with the gear case to

to remove contaminants from the gear case, and a header equipped therewith.

State of the art

In DE 195 31 918 A1, a machine suitable for harvesting stem-like plants, such as corn, is used

Described attachment to a forage harvester, the several transverse to

Forward direction in which the machine is moved during harvesting over a field, having arranged mowing and intake devices.

The mowing and intake devices include a lower one

Cutting disk in the manner of a circular saw blade and conveyor disks arranged above it with recesses for receiving

Plant. The cutting disks are rotated at a higher speed than the conveyor disks. The means of

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cutting discs separated from the stubble remaining in the soil

Plants are accepted through the conveyor discs and through the

Conveyor discs and in the gusset areas between the

Conveyor discs arranged transverse conveyor drums transported to the back of the mower and intake devices to the center of the machine and passed to a feed channel of a forage harvester.

In such machines are at the bottom of the

Cutting disc attached, so-called scrapers used, as shown in Figure 4 of DE 195 31 918 Al. Remove the scrapers

Plant parts that would otherwise get stuck to the parts of the machine below the cutting disc, e.g. B. the gear housing of

Drive of the cutting and conveyor discs and on the holders of

Accumulate stalk dividers and ensure proper operation of the

would affect the machine. In addition, the scrapers have relatively sharp leading edges and cause the sharp-edged corn stubble to fray, which protects the tires of the

forage harvester and leads to faster rotting of the corn stubble. According to DE 10 2005 055 621 B3, the scrapers can also be designed as knives that swing about the vertical axis with cutting edges leading in the direction of rotation, or according to DE 10 2017 206 034 A1 as extending from the inner edge of the cutting disk in a

Plane of the cutting disc parallel plane inwardly extending cutting element, which serves crop residues from the underside of the domed retaining rings, which are used to attach the

Cutting disc on a shaft driving them serve to remove.

DE 10 2007 035 791 B3 shows mounted under the cutting disc scrapers with a on the holder of a

Stem divider attached edge cooperate.

The Claas "Orbis 750" header, shown at the Agritechnica 2007 trade fair in Hanover, includes mowing and

Indentation devices, where at the bottom of the arched

Retaining rings of the cutting discs radially extending webs

3 BE2022/0042 are mounted, which have a certain vertical gap with the

Include the gear case and the holders of the stem dividers.

DE 381 312 A shows a straw and

Forage cutting machine with toothed arranged on a shaft

Conveyor discs, which are provided with ring grooves around their circumference, into which resiliently mounted knives engage. Leaf springs are arranged next to the conveyor discs, which are intended to prevent the clippings from being carried along.

Task

In the prior art thus oscillating or rigidly mounted reamers are used to remove the impurities from the

Remove the gear housings and stalk divider brackets, otherwise the accumulated debris will eventually slow down the cutting discs. This problem of accumulating contaminants poses an even higher one

Measures when the harvesting attachment is equipped with separate mulchers for processing the plant stubble (see EP 3269223 A1), since the

Mulchers naturally generate and whirl up even more dirt than is already present without a mulcher. However, a sufficient effect of the scraper is only guaranteed if there is a sufficiently small gap between the scraper and the parts to be cleaned, which cannot always be easily achieved with previous scrapers, e.g. due to mechanical tolerances and a possible variety different sized parts that can be used in manufacturing or a possible repair. With previous scrapers, however, there was a risk of rotating and stationary parts colliding with the resulting damage if the gap selected was too small.

DE 381 312 A describes a scraper made of an elastic material, but for removing the

clippings from the conveyor discs.

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The object on which the invention is based is seen in a mowing and mowing improved over the prior art

To provide collection device for a header and a header equipped with it.

Solution

This object is achieved by the teaching of

Claims 1 and 10 solved, wherein in the other

Claims features are listed that further develop the solution in an advantageous manner.

A mowing and collection device for a header for harvesting stalk-like plants includes a cutting disc for

Cutting off plants in a field that are over a

Retaining ring is rotatably supported on a gear housing, at least one conveyor disc arranged above the cutting disc with bulges distributed around its circumference for receiving

plant stalks and at least one downwardly extending scraper assembly mounted below the retaining ring and having a member of inherently flexible material configured to cooperate with the gear housing to

Remove contaminants from the gear case.

In this way, a thorough cleaning of the transmission housing can be achieved with simple means, without

Damage in case of contact of the element with the

Transmission housing would be feared.

The element can move in the radial direction of the

Retaining ring extending or opposite the radial have angled forwards or backwards longitudinal axis.

In a possible embodiment, the element is flat and extends in its relation to the direction of rotation of the

Retaining rings rear area parallel to the retaining ring and is connected there to the retaining ring, while it is in its relation to the

Direction of rotation of the retaining ring leading area extends forward and downward. The rear part of the element can be clamped between the retaining ring and a web.

The element can be intrinsic and/or dated by a

Retaining ring protruding ridge be formed extending forward and downward.

The element can be shaped towards the gear housing by the wind generated when the retaining ring rotates.

In another embodiment, the element as

be running brush.

The gear case can extend backwards up to a

Cross members extend and the mowing and collection device on

brackets.

The retaining ring can be connected to a hollow shaft extending upwards from the gear housing, within which a shaft for driving the conveyor disk extends coaxially thereto, with the retaining ring being curved concavely upwards in its center in order to compensate for a height difference between the hollow shaft and the to overcome the cutting disk while the reamer assembly is mounted in the concave area of the retaining ring.

example

The drawings show two exemplary embodiments of the invention which are described in more detail below. It shows:

Fig. A cross section through a mowing and intake device for a mower attachment for harvesting stalk-like plants,

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FIG. 2 is taken transversely to the plane of the drawing in FIG

Cross section through one at the bottom of a retaining ring a

cutting disk attached to the mowing and intake device

Reamer, which is connected to the top of a gear housing of the mowing and

Collection device cooperates, and

3 shows a cross section analogous to FIG. 2 with a second

Embodiment of a reamer.

Figure 1 shows a vertical, transverse to

Forward direction V recorded cross-section through a mowing and

Collection device 10, for attachment to a header for

Maize harvest is configured. The header comprises in a conventional manner a frame with a cross member 12 on which a

Gear housing 14 of the mowing and collection device 10 is attached, in particular by means of a flange connection. Within the

A shaft for mechanically driving the movable elements of the mowing and intake device 10 can be arranged on the cross member 12 , which is arranged by a shaft inside the gear housing 14

Transmission with a hollow shaft 16 and one arranged coaxially therein

Drive shaft 18 is in drive connection.

The hollow shaft 16 is connected to a retaining ring 20, on the outer circumference of which a cutting disc 22 is attached. The

Drive shaft 18 is in turn connected to conveyor disks 24 , 26 arranged above cutting disk 22 . The

Cutting disk 22 is provided with sharp teeth or otherwise sharpened on the edge to separate the plant stalks to be harvested from the stubble remaining in the ground. The stems find in

Bulges of the conveyor discs 24, 26 recording and are in

Harvesting to a carrying and driving with one or more side by side arranged mowing and intake devices 10 comprehensive header and in a

Transported forward direction V over a field moving forage harvester (not shown).

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The mower and intake device 10 are at the front

Stem divider 28 associated with the support tubes 30 with the

Transmission housing 14 are connected. At the bottom of the

Transmission housing 14 is a skid 32 is arranged. For general

For the structure and function of the mowing and intake devices 10 and the entire mowing attachment, reference is made to the disclosures in DE 195 31 918 A1 and DE 103 51 858 A1, which are included in the present documents by reference.

The retaining ring 20 is concave in its center (pot-shaped, i.e. with a rectangular cross section, as shown, or trapezoidal or, as shown in DE 195 31 918 A1, bell-shaped) upwards to compensate for the height difference between the hollow shaft 16 and the

To overcome cutting disc 22 and thus forms a downwardly open interior space, although in other embodiments, a flat or even upwardly curved retaining ring 20 would be conceivable. The retaining ring 20 forms with its outer edge a flat flange area 34 in itself, on which the radially inner area of the

Cutting disk 22 rests from below and is fixed there by screws 36 which extend through holes in the flange area 34 and in the

Cutting disk 22 extend and are secured with nuts.

To remove dirt from the top of the transmission housing 14 (which can arise in particular when the mowing and gathering device 10 is assigned a mulching device, as is shown, for example, in EP 32 69 223 A1, whose

disclosure is incorporated by reference into the present documents) is or are provided on the underside of the retaining ring 20, a reamer assembly 38 or a plurality of circumferentially distributed reamer assemblies 38, which or which extends in the radial direction of the retaining ring 20 (or opposite the radial direction front or rear angled)

Has or have longitudinal axis. In the embodiment according to FIGS. 1 and 2, the scraper assembly 38 comprises a flat

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Element 40 of inherently flexible (pliable) material, such as rubber.

In the embodiment according to Figures 1 and 2, this is

Element 40 rectangular and in its rearward direction in the direction of rotation used during harvesting (cf. the arrow 48 in FIG. 2).

Area in which it extends parallel to the retaining ring 20 through

Screws 44 between the bottom of the retaining ring 20 and a

Bridge 42 jammed. The element 44 extends from there counter to the direction of rotation forward and is projecting in its front region by a from the underside of the retaining ring 20 downward

Ridge 46 is biased forward and downward and bent over. The

Element 40 could alternatively or in addition to being formed by the

Ridge 46 intrinsically, i.e. without external influence, be shaped to a certain extent curved forwards and downwards (i.e. do not run parallel to the retaining ring in its rest position, but be angled forwards and downwards) or, in the extreme case, shaped approximately at right angles or even around be angled more than 90° backwards.

The result that can be seen in FIG

Operation that the element 40 by its shape and / or by the resulting during rotation of the retaining ring 20 wind from

Retaining ring 20 extends downward and thus the top of the

Transmission housing 14 either touches during operation or sweeps over it at a relatively small distance in order to remove contaminants from there by direct mechanical action and / or the resulting wind. The inherently flexible element 40 has the advantage over the inherently rigid scrapers used in the prior art that on the one hand it can enclose a relatively narrow gap with the gear housing 14, but on the other hand - due to the flexibility of the

Elements 40 - no damage occurs in the event of an impact against the transmission housing 14. Certain tolerances when installing the

Elements 40 therefore have no adverse effects.

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In the second embodiment shown in FIG. 3, the flexible element 40° is designed as a brush, and accordingly comprises a

Number of flexible bristles that are inserted into the web 42 (or a separate holder connected thereto) and fixed there.

The mode of operation corresponds to the embodiment according to Figure 2, i.e. the bristles of the flexible element 40° sweep over the upper side of the

Transmission housing 14 at a relatively small distance or are due to contamination from there by direct mechanical

to remove the impact and/or the resulting wind.

If the support tubes 30 in the same plane as that of

Scavenger assembly 38 would be swept top of transmission case 14, scraper assembly 38 could remove contaminants present there as well.

Claims (10)

10 BE2022/0042 PATENT CLAIMS 1. Mowing and intake device (10) for a header harvester for harvesting stalk-like plants, comprising: a cutting disc (22) for cutting off plants standing in a field, which is rotatably supported on a gear housing (14) via a retaining ring (20), at least one conveyor disc (24, 26) arranged above the cutting disc (22) with bulges distributed around its circumference for receiving plant stalks and at least one scraper assembly (38) arranged below the retaining ring (20) and extending downwards and having an element (40, 40°) configured to cooperate with the gear housing (14) to remove contaminants from the gear housing (14), characterized in that the element (40, 40°) consists of an inherently flexible material. 2. Mowing and gathering device (10) according to claim 1, wherein the element (40, 40') has a longitudinal axis which extends in the radial direction of the retaining ring (20) or is angled forwards or backwards relative to the radial. 3. Mowing and gathering device (10) according to claim 1 or 2, wherein the element (40) is flat and extends parallel to the retaining ring (20) in its rear region with respect to the direction of rotation of the retaining ring (20) and is connected there to the retaining ring (20 ) while extending forward and downward in its advanced portion with respect to the rotating direction of the retainer ring (20). 4. Mowing and gathering device (10) according to claim 3, wherein the rear portion of the element (40) is clamped between the retaining ring (20) and a web (42). 11 BE2022/0042 5. Mowing and gathering equipment (10) according to claim 3 or 4, wherein the element (40) is formed intrinsically and/or extending forwardly and downwardly by a ridge (46) projecting from the retaining ring (20). 6. mowing and gathering device (10) according to any one of claims 3 to 5, wherein the element (40) by the rotation of the retaining ring (20) resulting wind towards the gear housing (14) is formed. 7. mowing and gathering device (10) according to claim 1 or 2, wherein the element (40 ') is designed as a brush. 8. mowing and gathering device (10) according to any one of the preceding claims, wherein the gear housing (14) extends rearwardly to a cross member (12) and the mowing and gathering device (10) on the cross member (12) supports. 9. Mowing and gathering device (10) according to one of the preceding claims, in which the retaining ring (20) is connected to a hollow shaft (16) which extends upwards from the gear housing (14) and within which there is a shaft (18) for driving coaxially thereto of the conveyor disc (24, 26), the retaining ring (20) being concavely curved upwards at its center in order to overcome a height difference between the hollow shaft (16) and the cutting disc (22) and the reamer assembly (38) is attached in the concave area of the retaining ring (20). 10. Mower attachment for harvesting stalk-like plants with one or more mowing and intake devices (10) according to one of the preceding claims.