Device for Harvesting Stalk Material

Abstract

The invention relates to a device (2) for harvesting stalk material, comprising a feed region, a conveyor device (4), a picking device, and a device which is arranged on a plane below the picking device for cutting stalks and has at least one cutter that rotates in a circulating manner on a horizontal or at least approximately horizontal plane. The aim of the invention is to provide a device with which the vegetable structure of the stubble pieces are damaged in addition to being cut such that bacteria and moisture can more easily penetrate the interior of a stalk piece, in particular stubble standing on the field. This is achieved in that at least one impact element (22) is formed on the cutter (18) which rotates in a circulating manner, said impact element rising over the thickness of the cutter blade.

Claims

1. A device (2) for harvesting of stalk material, with a feed area, a conveyor device (4), a picking device and a device arranged in a plane below the picking device for cutting of stalks, which has a circulating rotating blade in a horizontal plane or at least an approximately horizontal plane, wherein on the circulating rotating cutter (18) at least one impact element (22) is configured, which extends beyond the thickness of the cutter blade plate.

2. The device (2) of claim 1, wherein the cutter (18) is driven at an r.p.m. of at least 1500.

3. The device (2) of claim 1, wherein the impact element (22) has a cylindrical shape with a rounded tip.

4. The device (2) of claim 1, wherein the impact element (22) is configured as a solid, made from a metallic material, the outer layer of which additionally is hardened.

5. The device (2) of claim 1, wherein the impact elements (22) are arranged only on the cutter side facing the ground.

6. The device (2) of claim 1, wherein the at least one impact element (22) is arranged in the middle area of the cutter width.

7. The device (2) of claim 1, wherein the at least one impact element (22) is screwed into the cutter (18) with a countersunk screw.

8. The device (2) of claim 1, wherein beneath the picking plates (6) at least two picking rollers (10) are arranged along the picking gap (8), the minimum circumscribed circles of which overlap at least in some areas.

9. The device (2) of claim 8, wherein at intervals along the length of the picking gap (8), fixed or rotating blades (12) are arranged that extend into the minimum circumscribed circles of the picking rollers (10).

Description

[0020] Further variations and configurations of the invention can be gleaned from the following subject-matter specification and the drawings.

[0021] The invention will now be explained in greater detail using the embodiment example. Shown are:

[0022] FIG. 1: a sectional view of a part of the harvester.

[0023] FIG. 2: a view of the assembly shown in FIG. 1 from in front

[0024] FIG. 3: a view of the underside of the assembly shown in FIG. 2 with the impact elements on the blades.

[0025] FIG. 1 shows a section of a device 2 for harvesting of stalk material. The device has available conveyor device 4, which in the embodiment consists of two opposite-placed conveyor chains, which on their outer side have a number of followers, by which ears of corn can be conveyed away from the cornstalk 14.

[0026] The ears of corn are separated from cornstalk 14 by a picking device which in the embodiment consists of two picking plates 6, which with their sides facing each other delimit a picking gap 8. Cornstalk 14 glides through the length of picking gap 8, while the picking rollers 10 situated below picking gap 8 grasp cornstalk 14 and pull it downwards. In the embodiment shown in FIG. 1, additionally one more blade 12 acts together with picking rollers 10 to comminute cornstalk 14 grasped by picking rollers 10.

[0027] Down into the area below picking rollers 10 extends a rotor shaft 16, on the lower end of which in the embodiment example two cutters 18 are attached. The two blades 18 rotate in a horizontal plane. With a rotary motion of the cutters 18, these separate the cornstalk from the stubble 20 remaining in the ground. The cutters 18 can with a rotational motion in addition also encounter parts of the cornstalk which fall down from picking rollers 10 and cutter blade 12.

[0028] In the embodiment example, the two cutters 18 are equipped with three additional impact elements 22. Impact elements 22 are on the underside of cutters 22 facing the ground. Impact elements 22 project over the cross-sectional surface of the two cutters 18, Thus they extend closer to the ground than the blades of the two cutters 18.

[0029] In FIG. 1, stubble 20 is shown in its still intact form. When stubble 20 has in fact had multiple encounters with impact elements 22, stubble 20 in its upper area has lost its cylindrical shape. It then is severely damaged and spliced.

[0030] FIG. 2 is a view of the assembly shown in FIG. 1, seen from the front. As can be gleaned from FIG. 2, impact element 22 has a cylindrical shape with a rounded tip 24. Impact element 22 consists of a metallic material and is designed to be solid.

[0031] From the enlarged view from below in FIG. 3 of the assembly shown in FIG. 2, it is perceived that the impact elements 22 are arranged in the center area of the width of cutter 26.

[0032] The embodiment example described above serves only for explanation of the invention. The invention is not limited to the embodiment example shown. It will pose no difficulties for one skilled in the art to alter the embodiment example in a way he finds suitable, to adapt it to a specific application.