COMBINE HARVESTER CONCAVE THRESHING BAR

Abstract

A threshing concave assembly is disclosed having a threshing concave bar wherein the threshing bar is comprised of two threshing surfaces having a dihedral angle relationship relative to each other. In addition, in another aspect the threshing bar can be comprised of two dihedral surfaces whereby one surface face has about 130% greater surface area than its adjacent surface face. Alternatively, one surface face of the threshing bar can be 1.3× wider than its adjacent surface face. In another aspect the threshing bar can be comprised of two dihedral surfaces whereby one surface face has about a 170% greater surface area than its adjacent surface face.

Claims

1. A concave threshing bar, comprising: a cylindrical threshing bar having cut-out that extends to a length of the threshing bar, wherein the threshing bar is secured to a concave; and the cut-out comprising a first surface and a second surface, wherein the first surface is at an angle greater than 90° relative to the second surface, and wherein the first surfaces comprises a surface area that is larger relative to a surface area of the second surface.

2. The threshing bar of claim 1, wherein the surface area of the first surface is about 130% larger or about 1.3 times larger relative to the surface area of the second face.

3. The threshing bar of claim 1, wherein the surface area of the first surface is about 170% larger or about 1.7 times larger relative to the surface area of the second surface.

4. The threshing bar of claim 1, wherein the surface area of the first surface is about 101% to 199% larger or about 1.01 times up to 1.99 times larger relative to the surface area of the second surface.

5. A concave threshing bar, comprising: a concave having a pair of arcuate side members; a threshing bar having a channel extending a length of the threshing bar, wherein the threshing bar is secured between the pair of arcuate side members of the concave; and the channel of the threshing bar having a first face and a second face, wherein the first face is sloped relative to the second face, and wherein the first or second face each comprise a surface area that is larger relative to each other.

6. The concave threshing bars of claim 5, wherein the first and second face are of varying dihedral angles.

7. The threshing bar of claim 5, wherein the surface area of the first face is about 130% larger or about 1.3 times larger relative to the surface area of the second face.

8. The threshing bar of claim 5, wherein the surface area of the first face is about 170% larger or about 1.7 times larger relative to the surface area of the second face.

9. The threshing bar of claim 5, wherein the surface area of the first face is about 101% to 199% larger or about 1.01 times up to 1.99 times larger relative to the surface area of the second face.

10. A concave threshing bar, comprising: a cylindrical threshing bar comprising a notch extending a length of the threshing bar, wherein the threshing bar is secured to a concave; and the notch of the threshing bar comprising a first surface and a second surface, wherein the first surface is at a sloped angle relative to the second surface, and wherein a surface area of the first face is at least about 101% to 199% larger or about 1.01 times up to 1.99 times larger relative to a surface area of the second face.

11. The concave threshing bars of claim 10, wherein the first and the second face are of varying dihedral angles.

12. The threshing bar of claim 10, wherein the surface area of the first face is further about 130% larger or about 1.3 times larger relative to the surface area of the second face.

13. The threshing bar of claim 10, wherein the surface area of the first face is further about 170% larger or about 1.7 times larger relative to the surface area of the second face.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The following description should be read with reference to the drawings, in which like elements in different drawings are numbered in like fash-ion. The drawings, which are not necessarily to scale, depict selected embodiments and are not intended to limit the scope of the disclosure. The disclosure may be more completely understood in consideration of the following detailed description of various embodiments in connection with the accompanying drawings, in which:

[0013] FIG. 1A illustrates a simplified cross-sectional side view and a close-up perspective view for one non-limiting exemplary embodiment of one or more bars or rods of the concave bar and frame assembly of the disclosure described herein.

[0014] FIG. 1B illustrates a perspective side view for the concave bar and frame assembly of FIG. 1A.

[0015] FIG. 1C illustrates a cross-sectional side view of a concave bar according to one non-limiting exemplary embodiment of the disclosure described herein.

[0016] FIG. 1D illustrates a cross-sectional side view of a concave bar according to another non-limiting exemplary embodiment of the disclosure described herein.

[0017] FIG. 2A illustrates a cross-sectional side view of a concave bar according to another non-limiting exemplary embodiment of the disclosure described herein.

[0018] FIG. 2B illustrates a cross-sectional side view of a concave bar according to another non-limiting exemplary embodiment of the disclosure described herein.

[0019] FIG. 3A illustrates a cross-sectional side view of a concave bar according to another non-limiting exemplary embodiment of the disclosure described herein.

[0020] FIG. 3B illustrates a cross-sectional side view of a concave bar according to another non-limiting exemplary embodiment of the disclosure described herein.

[0021] FIG. 4A illustrates a cross-sectional side view of a concave bar according to another non-limiting exemplary embodiment of the disclosure described herein.

[0022] FIG. 4B illustrates a cross-sectional side view of a concave bar according to another non-limiting exemplary embodiment of the disclosure described herein.

[0023] FIG. 5A illustrates a cross-sectional side view of a concave bar according to another non-limiting exemplary embodiment of the disclosure described herein.

[0024] FIG. 5B illustrates a cross-sectional side view of a concave bar according to another non-limiting exemplary embodiment of the disclosure described herein.

[0025] FIG. 6A illustrates a cross-sectional side view of a concave bar according to another non-limiting exemplary embodiment of the disclosure described herein.

DETAILED DESCRIPTION

[0026] In the Brief Summary of the present disclosure above and in the Detailed Description of the disclosure described herein, and the claims below, and in the accompanying drawings, reference is made to particular features (including method steps) of the disclosure described herein. It is to be understood that the disclosure of the disclosure described herein in this specification includes all possible combinations of such particular features. For example, where a particular feature is disclosed in the context of a particular aspect or embodiment of the disclosure described herein, or a particular claim, that feature can also be used, to the extent possible, in combination with and/or in the context of other particular aspects and embodiments of the disclosure described herein, and in the disclosure described herein generally.

[0027] The embodiments set forth below represent the necessary information to enable those skilled in the art to practice the disclosure described herein and illustrate the best mode of practicing the disclosure described herein. In addition, the disclosure described herein does not require that all the advantageous features and all the advantages need to be incorporated into every embodiment of the disclosure described herein.

[0028] Here, it has been observed that that maximizing surface area of the concave threshing bar is critical to maximizing threshing effectiveness. More specifically, it has been observed in the disclosure described herein that more threshing surface area on the bottom face or the threshing face of the concave bar can have a profound impact on grain harvesting, efficiency, and the quality of the grain. In other words, if there are two threshing concave bars of same threshing surface areas, but with one having a different concave face length, the one with an alternative concave face length may be preferred with respect to threshing efficiency and grain damage/quality.

[0029] In particular, what has been established here in the disclosure described herein according to the one or more embodiments is that along with concave bar threshing surface area (top face or bottom face) is a very important factor for consideration the concave bar design. In particular, it has been observed that maximum threshing efficiency and grain quality is not achieved by just maximizing the surface area but is also the location of where that surface area is on the concave bar.

[0030] In particular, when an about 45-degree bar (FIG. 1D) with a threshing face of about 1.0× size of the bottom threshing face is compared to another about 45-degree or 45-degree bar with a threshing face 1.7× (170%) the bottom face (FIG. 6A), it was observed that there are significant differences in perfor-mance (mainly grain damage) despite their surface areas across the entire bars are the same. Accordingly, it has been observed that the same kernel of corn can be removed with an about 25-degree bar with threshing face 1.7× (170%) wider times the bottom face as with a 45-degree bar with threshing face 1.0× the bottom face (each of the bars having the same diameters), whereas the about 25-degree bar does significantly less grain damage.

[0031] Accordingly, what has been observed through testing, the larger the angle of the concave bar, the greater the force that is applied onto the crop and causing grain damage. Hence, by using what we just established, one can de-crease the force (lesser the angle) but at the same time lengthen or widen one or more of the threshing faces or increase one or more of the threshing face surface areas, so less force is applied but for slightly longer, thus resulting less grain damage.

[0032] FIGS. 1A-1B illustrate a concave frame assembly 200 and concave bars 210 for one or more non-limiting exemplary embodiments of the disclosure de-w scribed herein. As disclosed herein, references to top or bottom faces of the threshing bars 210 may also be interpreted as first or second faces of the threshing bars. FIG. 1C illustrates an about 90-degree concave bar having equal first face (210a) and second face (210b) surface areas or heights/widths (x). FIG. 1D illustrates an about 45-degree concave bar (or about 135-degree) having substantially equal top and bottom surface areas or heights/widths (x). FIG. 2A illustrates a concave bar having an about 25-degree angle (or about 155-degree) and both the top and bottom surfaces each having substantially equal surface areas or height/widths (x). FIG. 2B illustrates a concave bar having an about 25-degree angle (or about 155-degree) and having a top face surface area or height/width that is about 1.3× (130%) larger than the bottom face surface area or height/width (x). FIG. 3A illustrates a concave bar having an about 25-degree angle (or about 155-degree) with a top face surface area or height/width that is about 1.7× (170%) larger than the bottom face surface area or height/width (x).

[0033] FIG. 3B illustrates a concave bar having an about 35-degree angle (or about 145-degree) with a top surface area height/width (x) that is equal to its bottom surface area or height/width (x). FIG. 4A illustrates a concave bar having an about 35-degree angle (or about 145-degree) with a top face surface area or height/width that is about 1.3× (130%) larger than its bottom face surface area or height/width (x). FIG. 4B illustrates a concave bar having an about 35-degree angle (or about 145-degree) with a top surface area or height/width that is about 1.7× (170%) larger than its bottom face surface area or height/width (x). FIG. 5A illustrates a concave bar having an about 45-degree angle (or about 135-degree) with a top face surface area or height/width (x) that is equal to the bottom surface area or height/width (x). FIG. 4B illustrates a concave bar having an about 45-degree angle (or about 135-degree) with a top face surface area or height/width that is about 1.3× (130%) larger than the bottom face surface area or height/width (x). FIG. 6A illustrates a concave bar having an about 45-degree angle with a top face surface area or height/width that is about 1.7× (170%) larger than the bottom surface area or height/width (x).

[0034] With respect to the concave bar angles disclosed in FIGS. 2A-6A, such as 25-degrees, 35-degrees, and 45-degrees, it is contemplated within the scope of the disclosure described herein that that any of the aforementioned angles may also be from about 10-degrees up to and including 90-degrees, with either the top or bottom threshing bar face surface areas or width/heights having ra-tios relative to each ranging from 1:2, 2:1, or 3:1, among others.

[0035] TABLE 1 illustrates test data for an exemplary crop, here a corn cob with a 2-inch cob surface, used in combination with an about 90-degree concave threshing bars in a combine harvester concave having substantially equal top and bottom threshing surfaces areas or height/width, as shown with respect to FIG. 1C:

TABLE-US-00001 TABLE 1 THRESHING THRESHING FACE THRESHING % ANGLE MULTIPLE EFFICIENCY DAMAGE Ideal 100.00% 0.00% 90° 1.0x 88.0% 10.2%

[0036] TABLE 2 illustrates the various test data for the exemplary tested crop, here a corn cob with a 2-inch cob surface, and the concave threshing bars within the concave each having top and bottom surfaces of substantially the same surface areas or height/width (e.g., 1.0×, x=x, or 1:1) and the various bar configurations and surface areas or height/widths of one surface relative to another (about 1.0×, 1.3×, or 1.7×) corresponding to each of FIGS. 1D-6A of the disclosure described herein:

TABLE-US-00002 TABLE 2 THRESHING THRESHING FACE THRESHING % ANGLE MULTIPLE EFFICIENCY DAMAGE Ideal 100.00% 0.00% 45° or 135° 1.0x 98.0% 6.0% 35° or 145° 1.0x 97.0% 5.0% 25° or 155° 1.0x 94.3% 4.0% 45° or 135° 1.3x 98.3% 9.0% 35° or 145° 1.3x 97.5% 3.0% 25° or 155° 1.3x 96.4% 2.0% 45° or 135° 1.7x 98.8% 10.0% 35° or 135° 1.7x 99.3% 2.0% 25° or 155° 1.7x 98.7% 1.0%

[0037] Referring to TABLES 1-2, as shown from the testing results, the about 25-degree angled threshing bar (or about 155-degree) having an about 1.7× top surface relative to the bottom surface, as shown in FIG. 3A, demonstrated the least amount of damage to the crop at a rate of 1.0% while still maintaining a high threshing efficiency at a rate of 98.7% that exceeded the 45-degree bar (1.0×). Accordingly, the foregoing results demonstrate that the embodiment of FIG. 3A will provide the least amount of damage to a crop in a combine harvester concave while maintaining high crop threshing efficiency. Similarly, the about 35-degree angled threshing bar (or about 145-degree) having an about 1.7× top surface relative to the bottom surface, as shown in FIG. 4A, demonstrated the highest threshing efficiency rate of 99.3% while still maintaining a low crop damage rate of 2.0%. Hence, the foregoing results demonstrate that the embodiment for FIG. 4A will provide the highest crop threshing efficiency rate in a combine harvester concave while maintaining a low damage rate to the crop. Moreover, the about 90-degree threshing concave bar with substantially equal first and second face surface areas of FIG. 1C demonstrated to be the least efficient (88.0%) concave bar and with the most damage to the crop (10.2%).

[0038] Here, it is contemplated within the scope of the disclosure described herein that any of the concave threshing bar 210 embodiments of FIGS. 1C-6A can be used within the concave frame assembly 200 of FIGS. 1A-1B, in any configuration, including forward facing or reverse facing arrangements of bars 210 within the concave. In addition, it is contemplated within the scope of the disclosure described herein that any threshing bars disclosed in FIGS. 1A-1B can be used in combination with each other within the concave frame 200, such as in varying spacing relative to each other or in diagonal/sideways configurations.

[0039] From the foregoing it will be seen that the present disclosure described herein is one well adapted to attain all ends and objectives herein-above set forth, together with the other advantages which are obvious and which are inherent to the invention.

[0040] Since many possible embodiments may be made of the invention without departing from the scope thereof, it is to be understood that all matters herein set forth or shown in the accompanying drawings are to be interpreted as illustrative, and not in a limiting sense.

[0041] While specific embodiments have been shown and discussed, various modifications may of course be made, and the invention is not limited to the specific forms or arrangement of parts described herein, except insofar as such limitations are included in following claims. Further, it will be understood that certain features and sub-combinations are of utility and may be employed without reference to other features and sub-combinations. This is contemplated by and is within the scope of the claims.