WO2021194873A1 - Combine harvester concave threshing bar - Google Patents
Combine harvester concave threshing bar Download PDFInfo
- Publication number
- WO2021194873A1 WO2021194873A1 PCT/US2021/023140 US2021023140W WO2021194873A1 WO 2021194873 A1 WO2021194873 A1 WO 2021194873A1 US 2021023140 W US2021023140 W US 2021023140W WO 2021194873 A1 WO2021194873 A1 WO 2021194873A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- threshing
- bar
- concave
- face
- bars
- Prior art date
Links
- 235000013339 cereals Nutrition 0.000 description 25
- 239000000463 material Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000000926 separation method Methods 0.000 description 5
- 240000008042 Zea mays Species 0.000 description 4
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 4
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 4
- 235000005822 corn Nutrition 0.000 description 4
- 238000003306 harvesting Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 240000006240 Linum usitatissimum Species 0.000 description 2
- 238000007792 addition Methods 0.000 description 2
- 235000004426 flaxseed Nutrition 0.000 description 2
- 239000010902 straw Substances 0.000 description 2
- 244000075850 Avena orientalis Species 0.000 description 1
- 235000007319 Avena orientalis Nutrition 0.000 description 1
- 241001652591 Feniseca tarquinius Species 0.000 description 1
- 244000068988 Glycine max Species 0.000 description 1
- 235000010469 Glycine max Nutrition 0.000 description 1
- 240000005979 Hordeum vulgare Species 0.000 description 1
- 235000007340 Hordeum vulgare Nutrition 0.000 description 1
- 235000004431 Linum usitatissimum Nutrition 0.000 description 1
- 244000046052 Phaseolus vulgaris Species 0.000 description 1
- 235000010627 Phaseolus vulgaris Nutrition 0.000 description 1
- 240000004713 Pisum sativum Species 0.000 description 1
- 235000010582 Pisum sativum Nutrition 0.000 description 1
- 241000209056 Secale Species 0.000 description 1
- 235000007238 Secale cereale Nutrition 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 235000021307 Triticum Nutrition 0.000 description 1
- 244000098338 Triticum aestivum Species 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 235000019994 cava Nutrition 0.000 description 1
- 229940076664 close up Drugs 0.000 description 1
- 244000144972 livestock Species 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01F—PROCESSING OF HARVESTED PRODUCE; HAY OR STRAW PRESSES; DEVICES FOR STORING AGRICULTURAL OR HORTICULTURAL PRODUCE
- A01F12/00—Parts or details of threshing apparatus
- A01F12/18—Threshing devices
- A01F12/26—Multi-part threshing concaves
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01F—PROCESSING OF HARVESTED PRODUCE; HAY OR STRAW PRESSES; DEVICES FOR STORING AGRICULTURAL OR HORTICULTURAL PRODUCE
- A01F12/00—Parts or details of threshing apparatus
- A01F12/18—Threshing devices
- A01F12/24—One-part threshing concaves
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01F—PROCESSING OF HARVESTED PRODUCE; HAY OR STRAW PRESSES; DEVICES FOR STORING AGRICULTURAL OR HORTICULTURAL PRODUCE
- A01F7/00—Threshing apparatus
- A01F7/02—Threshing apparatus with rotating tools
- A01F7/04—Threshing apparatus with rotating tools with axles transverse to the feeding direction
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01F—PROCESSING OF HARVESTED PRODUCE; HAY OR STRAW PRESSES; DEVICES FOR STORING AGRICULTURAL OR HORTICULTURAL PRODUCE
- A01F7/00—Threshing apparatus
- A01F7/02—Threshing apparatus with rotating tools
- A01F7/06—Threshing apparatus with rotating tools with axles in line with the feeding direction ; Axial threshing machines
Definitions
- a combine harvester is a machine that is used to harvest grain and seed crops. The objective is to complete several processes, which traditionally were distinct, in one pass of the machine over a particular part of the field.
- the crops that may be harvested with a combine can include but is not limited to wheat, oats, rye, peas, edible beans, barley, corn, soybeans, and flax or linseed.
- the waste (e.g., straw) left behind on the field includes the remain ing stems and leaves of the crop having limited nutrients which may be, for example, chopped and spread on the field or baled for feed and bedding for livestock.
- the combine harvester includes a header, which removes the crop from a field, and a feeder housing which transports the crop matter into a threshing rotor. The process of threshing is removing the grain or seed from the crop.
- the threshing rotor can include one or more rotors which can extend axially (front to rear) or transversely within the body of the combine, and which are partially or fully surrounded by one or more perforated con caves.
- a rotor having threshing concaves with bars or wires for threshing operations of the crop, and concave grates with slots, wires or fingers for separation operations of the crop material, also known as separation concaves or separation grates.
- the separation grate is meant to separate any grain that is caught in material other than grain, such as chaff, straw, shucks, stalk, leafy material, among others, which may also be referred to herein as MOG.
- a concave bar config uration provides a balance of being as aggressive as possible while doing the least amount of grain damage.
- the concave bar configuration of the disclo sure described herein can thresh crop effectively such it has the most chance to be captured in a combine, while also threshing the crop with the least amount of grain damage, such that the seed or grain is without cracks or splits.
- a threshing con- cave assembly having a threshing concave bar wherein the threshing bar is comprised of two threshing surfaces having a dihedral angle relationship relative to each other.
- the thresh ing bar can be comprised of two dihedral surfaces whereby one surface (face) has about 130% greater surface area than its adjacent surface.
- one face of the threshing bar can be 1.3x longer / wider than its adjacent face.
- the threshing bar can be comprised of two dihedral surfaces whereby one surface has about 150% greater surface area than its adjacent face.
- the threshing bar can be comprised of two di hedral surfaces whereby one surface has about a 170% greater surface area than its adjacent face.
- the threshing bar is comprised of two dihedral surfaces whereby one surface is about 100% to 250% greater surface area than the adjacent face.
- the threshing bars in the concave can be of varying face surface areas relative to each other, such as wherein threshing bars’ surfaces/faces are equal, some bars have a surface that is 130% greater than its adjacent face and some bars have a surface that is say 170% greater than its adjacent face, among others.
- a concave threshing bar having a first and second threshing opposing faces, wherein the first face comprises a surface area larger than the second face.
- the surface area of the first face is about 130% larger or wider or about 1.3 times larger or wider than the second face.
- the surface area of the first face is about 170% larger or wider or about 1.7 times larger or wider than the second face.
- the surface area of the first face is about 101% to 199% larger or wider or about 1.01 times up to 1.99 times larger or wider than the second face.
- a concave threshing bar having a plurality of threshing bars, wherein the threshing bars are of varying face surface areas relative to each other.
- the threshing bars are of varying dihedral angles.
- the threshing bars in the concave can be of varying dihedral angles, such as threshing bars of various threshing angles throughout the concave, with more aggressive bars having a 45-degree angle near where crop enters the concave and then having bars that are anywhere from about 25 to 45 degrees or less aggressive as crop is threshed.
- the threshing bars in the concave can be of various spacing between adjacent bars, wherein some bars in the concave are spaced closer or farther apart than other bars whereby the majority of grain is threshed, more grain can escape. Here, the faster the grain can escape, the less grain damage there is.
- the threshing bars in the concave can be of various dihedral angles and spacing between adjacent bars, such as bars that are not only of different angle but also of different spacing.
- the threshing bar can be comprised of two dihedral surfaces wherein the bars are fastened or secured to one or more side rails of the concave at an acute angle.
- this can include wherein the bars are diagonal in the concave, such that the crop can hit the bar more "head on.”
- the threshing bar can be comprised of dihedral faces that are laser hardened.
- the threshing bar metal can be hardened by a laser such that it maintains the bar angle and extends the bars life, otherwise the threshing surface (face of the bar) can get worn down and becomes less effective.
- the threshing bar can be com prised of dihedral faces that is case hardened. In this method of hardening steel, however, the laser hardening is more precise and cost effective. With case hardening, one can harden the entire bar relative to a laser where one can harden a specific area.
- the sharp edges of the threshing bar can be made less sharp (rounded off) and laser hardened.
- the threshing bar can be extruded.
- 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.
- FIG. IB illustrates a perspective side view for the concave bar and frame assembly of FIG. 1A.
- FIG. 1C illustrates a cross-sectional side view of a concave bar accord ing to one non-limiting exemplary embodiment of the disclosure described herein.
- FIG. ID illustrates a cross-sectional side view of a concave bar accord ing to another non-limiting exemplary embodiment of the disclosure described herein.
- FIG. 2A illustrates a cross-sectional side view of a concave bar accord ing to another non-limiting exemplary embodiment of the disclosure described herein.
- FIG. 2B illustrates a cross-sectional side view of a concave bar accord ing to another non-limiting exemplary embodiment of the disclosure described herein.
- FIG. 3A illustrates a cross-sectional side view of a concave bar accord- ing to another non-limiting exemplary embodiment of the disclosure described herein.
- FIG. 3B illustrates a cross-sectional side view of a concave bar accord ing to another non-limiting exemplary embodiment of the disclosure described herein.
- FIG. 4A illustrates a cross-sectional side view of a concave bar accord ing to another non-limiting exemplary embodiment of the disclosure described herein.
- FIG. 4B illustrates a cross-sectional side view of a concave bar accord ing to another non-limiting exemplary embodiment of the disclosure described herein.
- FIG. 5A illustrates a cross-sectional side view of a concave bar accord ing to another non-limiting exemplary embodiment of the disclosure described herein.
- FIG. 5B illustrates a cross-sectional side view of a concave bar accord- ing to another non-limiting exemplary embodiment of the disclosure described herein.
- FIG. 6A illustrates a cross-sectional side view of a concave bar accord ing to another non-limiting exemplary embodiment of the disclosure described herein.
- the one with an alternative concave face length may be preferred with respect to threshing efficiency and grain damage/quality.
- concave bar threshing surface area top face or bottom face
- 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.
- 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 scribed 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. ID 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 hav ing an about 25-degree angle (or about 155-degree) and having a top face sur face area or height/width that is about 1.3x (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 1.7x (170%) larger than the bottom face surface area or height/width (x).
- 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 hav ing an about 35-degree angle (or about 145-degree) with a top face surface area or height/ width that is about 1.3x (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 1.7x (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 hav ing an about 45-degree angle (or about 135-degree) with a top face surface area or height/width that is about 1.3x (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 1.7x (170%) larger than the bottom surface area or height/width (x).
- 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.
- 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 1
- 25-degree angled threshing bar (or about 155-degree) having an about 1.7x 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 (l.Ox). Accordingly, the foregoing results demonstrate that the embodiment of FIG. 3A will provide the least amount of damage to a crop in a combine har vester concave while maintaining high crop threshing efficiency. Similarly, the about 35-degree angled threshing bar (or about 145-degree) having an about 1.7x top surface relative to the bottom surface, as shown in FIG.
- FIG. 4A demon strated the highest threshing efficiency rate of 99.3% while still maintaining a low crop damage rate of 2.0%.
- 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.
- the about 90-degree threshing concave bar with substan tially 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%).
- 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.
- 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 configura tions.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Threshing Machine Elements (AREA)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BR112022018824A BR112022018824A2 (pt) | 2020-03-21 | 2021-03-19 | Barras de debulha côncavas |
CA3170949A CA3170949A1 (en) | 2020-03-21 | 2021-03-19 | Combine harvester concave threshing bar |
EP21775941.4A EP4100436A4 (en) | 2020-03-21 | 2021-03-19 | THRESHING COPLE BAR OF A COMBINE |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US16/826,194 US11464169B2 (en) | 2017-12-28 | 2020-03-21 | Combine harvester concave threshing bar |
US16/826,194 | 2020-03-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2021194873A1 true WO2021194873A1 (en) | 2021-09-30 |
Family
ID=77890577
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2021/023140 WO2021194873A1 (en) | 2020-03-21 | 2021-03-19 | Combine harvester concave threshing bar |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP4100436A4 (es) |
AR (1) | AR121614A1 (es) |
BR (1) | BR112022018824A2 (es) |
CA (1) | CA3170949A1 (es) |
WO (1) | WO2021194873A1 (es) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9119349B2 (en) * | 2012-12-21 | 2015-09-01 | Cnh Industrial America Llc | Concave with crop guidance features |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8454416B1 (en) * | 2011-09-09 | 2013-06-04 | Donald J. Estes | Concave with an array of longitudinally notched spaced apart threshing elements |
US10440893B2 (en) * | 2014-03-05 | 2019-10-15 | Kevin J. Kile | Concaves for an agricultural combine |
US10849275B2 (en) * | 2017-06-15 | 2020-12-01 | Csm Corp. | Concave threshing bars for use in an agricultural harvester |
US11317566B2 (en) * | 2017-06-23 | 2022-05-03 | Thrashmaster Combines, LLC | Universal threshing concave for an agricultural combine |
US20190200532A1 (en) * | 2017-12-28 | 2019-07-04 | Brian G. Robertson | Combine harvester concave threshing bars |
-
2021
- 2021-03-18 AR ARP210100686A patent/AR121614A1/es unknown
- 2021-03-19 EP EP21775941.4A patent/EP4100436A4/en active Pending
- 2021-03-19 CA CA3170949A patent/CA3170949A1/en active Pending
- 2021-03-19 BR BR112022018824A patent/BR112022018824A2/pt unknown
- 2021-03-19 WO PCT/US2021/023140 patent/WO2021194873A1/en unknown
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9119349B2 (en) * | 2012-12-21 | 2015-09-01 | Cnh Industrial America Llc | Concave with crop guidance features |
Also Published As
Publication number | Publication date |
---|---|
AR121614A1 (es) | 2022-06-22 |
EP4100436A4 (en) | 2024-03-20 |
CA3170949A1 (en) | 2021-09-30 |
BR112022018824A2 (pt) | 2022-11-22 |
EP4100436A1 (en) | 2022-12-14 |
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