CN209732052U - combine harvester and forced delivery and uniform distribution device for threshed products thereof - Google Patents
combine harvester and forced delivery and uniform distribution device for threshed products thereof Download PDFInfo
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- CN209732052U CN209732052U CN201822250547.3U CN201822250547U CN209732052U CN 209732052 U CN209732052 U CN 209732052U CN 201822250547 U CN201822250547 U CN 201822250547U CN 209732052 U CN209732052 U CN 209732052U
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- 230000002457 bidirectional effect Effects 0.000 claims abstract description 21
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- 230000005540 biological transmission Effects 0.000 claims abstract description 16
- 230000007246 mechanism Effects 0.000 claims abstract description 14
- 238000009434 installation Methods 0.000 claims description 6
- 230000007423 decrease Effects 0.000 claims 1
- 238000004140 cleaning Methods 0.000 abstract description 30
- 230000033001 locomotion Effects 0.000 abstract description 11
- 238000003306 harvesting Methods 0.000 abstract description 5
- 239000012535 impurity Substances 0.000 abstract description 5
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- 235000013339 cereals Nutrition 0.000 description 7
- 241000196324 Embryophyta Species 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
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Abstract
The utility model discloses a combine and come off thing forced transport equipartition device thereof, including drive mechanism, two-way transport screw feeder, screw feeder bottom plate, drive mechanism is located and carries the equipartition device anterior, including n to bevel gear and transmission shaft, two-way transport screw feeder both ends screw feeder blade antiposition, the screw feeder bottom plate is located two-way transport screw feeder below, screw feeder bottom plate middle section opening both sides are equipped with a plurality of separation holes. The utility model changes the reciprocating motion of the traditional return plate into the rotary motion, reduces the amplitude and leads the conveying of the fallen objects to be smoother; in addition, the bottom plate of the auger transversely adopts an arrangement mode of auger grooves with unequal intervals, and the rotation directions of the bidirectional conveying auger are different, so that the threshed objects entering the screen surface are more uniformly distributed, and the shaking plate and the return plate in the traditional cleaning device are more suitable for working conditions of large feeding amount, excessive impurities, nonuniform transverse distribution of the threshed objects and the like in the harvesting process.
Description
Technical Field
The utility model relates to a combine field, especially one kind relate to combine and take off thing forced conveying equipartition device thereof.
Background
When the combine harvester is used for field harvesting, the mixture of the cut crops entering the cleaning device after the threshing separation process is called as the threshed material, and the main components of the threshed material comprise grains, short stalks, light impurities and a small amount of long stalks. The distribution uniformity and the conveying fluency of the threshed objects directly influence the working efficiency and the performance of the cleaning device and are key factors for restricting the design rated feeding amount of the combine harvester from further increasing. Currently, there have been some studies on improving the distribution and delivery of the effluent. Chinese patent (CN107182453A) has designed a grain cleaning system with equipartition material and cleaning function in advance, and its material shaking plate can make cereal even at cleaning mechanism's radial distribution when cleaning cereal to can clean in advance the threshing material, make partial cereal pass through the sieve in advance, promote cleaning efficiency, nevertheless the vibration is great. The utility model discloses a chinese patent (CN108055912A) utility model discloses a device is thrown in shake of thing of desquamating even formula cereal desquamation of allotransmission, and the thing that desquamates becomes even after the effect of two thing shake boards that desquamate, but its problem that does not solve the thing of desquamation and carry the smoothness nature that comes off. Chinese patent (CN204811000U) has installed a guide plate intelligence control structure in thresher, can realize automatic control threshing object velocity of movement and direction, but need to control the mechanism motion through multiple sensor acquisition signal, and the cost is higher and lack stability. Chinese patent (CN203181617U) provides a flow guiding device for a harvester cleaning sieve, which comprises a bottom plate and a V-shaped flow guiding groove, wherein seeds with sundries slide onto the cleaning sieve through the flow guiding device, and the materials are not easily accumulated due to the action of the V-shaped groove, but the V-shaped groove is distributed at equal intervals and does not conform to the actual falling distribution position of the threshed objects, and the uniform distribution effect is limited. Chinese patent (CN107135750A) has designed a combine return conveying board, and a plurality of water conservancy diversion strips have been installed to its top, can make the even falling of material on the shake board, under the shake effect of shake board, make the distribution of threshing thing in the cleaning chamber comparatively even, nevertheless the threshing thing is easier to take place to pile up in the middle part before cleaning plant, has increased cleaning load, and the vibration is great.
In addition to the above disadvantages, the existing research focuses on increasing the shaking plate, the return conveying plate, the flow guide strips, and the like, and although the uniformity of the distribution of the separated substances can be improved to a certain extent, the problems of conveying fluency and large mechanism vibration are not always solved. Especially when super rice is harvested, the threshed objects in unit time are increased sharply, and the threshed objects need to be uniformly distributed and conveyed above the screen surface of the cleaning device as soon as possible to prevent accumulation.
SUMMERY OF THE UTILITY MODEL
In order to reach above-mentioned purpose and solve the problem that exists in the present thing equipartition of threshing out and the transport research, the utility model provides a combine harvester and take off thing forced transport equipartition device, this kind of device can satisfy the thing equipartition of threshing out and the transport demand of big feeding volume combine harvester operation, and compact structure, vibration are lower, stability is high. The utility model adopts the following technical scheme:
Combine takes off thing compulsory transport equipartition device, including the two-way transport screw feeder, two-way transport screw feeder one end links firmly with drive mechanism, and the other end links firmly with the screw feeder bottom plate, and the epaxial screw feeder blade that is provided with a pair of opposite direction of rotation of the screw feeder of two-way transport screw feeder, the screw feeder bottom of groove of screw feeder bottom plate is equipped with the opening, screw feeder axle between the screw feeder blade that opposite direction of rotation is relative with the opening.
in the scheme, the transmission mechanism comprises n pairs of bevel gears and a transmission shaft, wherein each pair of bevel gears are vertically meshed with each other, one bevel gear is sleeved on the transmission shaft, the other bevel gear is fixedly connected with the auger shaft, and n is more than or equal to 2.
In the scheme, the rotation direction of the bidirectional conveying auger positioned at the leftmost side or the rightmost side is opposite to the rotation direction of the longitudinal axial flow threshing cylinder, and the rotation directions of the other bidirectional conveying augers are the same as the rotation direction of the longitudinal axial flow threshing cylinder.
In the above-mentioned scheme, the screw feeder groove is equipped with n, and when axis of ordinates flowed threshing cylinder clockwise turning, the width in screw feeder groove reduces in proper order, and when axis of ordinates flowed threshing cylinder counter-clockwise turning, the width in screw feeder groove increases in proper order.
In the above scheme, a plurality of rows of separation holes are symmetrically arranged on both sides of the opening, the total length of the distribution of the plurality of rows of separation holes is less than or equal to the length of the upper layer vibrating screen, and the length range of the opening is 200-300 mm.
In the scheme, the shape of the separation hole can be circular, rectangular, square and kidney-shaped, the diameter range of the circular separation hole is 50-120mm, and the maximum length range of the rectangular, square and kidney-shaped separation hole is 50-120 mm.
In the scheme, the included angle between the axial installation direction of the conveying and uniform distribution device and the horizontal line ranges from 5 degrees to 15 degrees, the minimum vertical distance between one end of the conveying and uniform distribution device and the tangential flow concave plate sieve ranges from 0mm to 20mm, and the minimum distance between the other end of the conveying and uniform distribution device and the longitudinal axis flow concave plate sieve ranges from 0mm to 100 mm.
A combine harvester comprises the above-mentioned threshed material forced conveying and uniform distribution device.
The utility model has the advantages as follows:
the utility model discloses become the reciprocating motion of traditional return stroke board into rotary motion, the vibration reduces by a wide margin, and it is more smooth to take off the thing and carry, has removed the shake board among the traditional cleaning plant simultaneously, has further reduced quality and vibration. The conveying efficiency is high, the screw feeder blades have the forced conveying capacity, and the stripped objects are not easy to accumulate. In addition, the bottom plate of the auger transversely adopts an arrangement mode of auger grooves with unequal intervals, and the rotation directions of the auger are different, so that the transverse distribution of the threshing objects entering the screen surface is more uniform, and the structures such as a shaking plate, a return plate and the like in the traditional cleaning device are more suitable for working conditions such as large feeding amount, excessive impurities, uneven transverse distribution of the threshing objects and the like in the harvesting process.
Drawings
FIG. 1 is a left side view of a structure of a forced delivery and uniform distribution device for threshed objects of a combine harvester;
FIG. 2 is a three-dimensional schematic view of a forced conveying and uniform distribution device for threshed objects of a combine harvester;
FIG. 3 is a three-dimensional schematic view of the floor of the auger;
FIG. 4 is a left side view of the clockwise turning two-way conveying auger structure;
FIG. 5 is a left side view of a counter-clockwise turning, bi-directional conveying auger structure;
FIG. 6 is a front view of the structure of the forced delivery and uniform distribution device for the threshed objects of the combine harvester;
FIG. 7 is a schematic view showing the direction of movement of the ejectors and the direction of the air flow.
In the figure: 1. the device comprises a tangential flow concave plate screen, 2, a longitudinal axis flow concave plate screen, 3, an auger bottom plate, 4, a bidirectional conveying auger, 5, a secondary tailing auger, 6, a multi-air channel cleaning device, 7, a transmission mechanism, 301, a separation hole, 302, an opening in the middle section of the auger bottom plate, 303, a side plate A, 304, a side plate B, 401, a left-handed auger blade, 402, an auger shaft, 403, a right-handed auger blade, 501, a vertical tailing auger, 502, a horizontal tailing auger, 601, a multi-air channel centrifugal fan, 602, an upper vibrating screen, 603, a tail screen, 701, a bevel gear I, 702, a bevel gear II, 703, a bevel gear III, 704, a bevel gear IV, 705, a transmission shaft, 6011 and an upper air channel extending air channel.
Detailed Description
The invention will be further described with reference to the drawings and the following examples, but the scope of the invention is not limited thereto.
Example 1
As shown in figure 1, the left view of the structure of the forced conveying and uniform distribution device for the threshed objects of the combine harvester comprises a transmission mechanism 7, a two-way conveying auger 4 and an auger bottom plate 3, wherein the transmission mechanism 7 is positioned at the leftmost side of the conveying and uniform distribution device, one end of the two-way conveying auger 4 is fixedly connected with the transmission mechanism 7, the other end of the two-way conveying auger 4 is fixed on the auger bottom plate 3, the axial installation direction of the conveying and uniform distribution device is parallel to an upper air duct extending air duct 6011 of a multi-air duct cleaning device 6, namely, the included angle between the installation direction and the horizontal line is between 5 and 15 degrees, the conveying and uniform distribution device is as close to a tangential flow concave plate sieve 1 and a longitudinal flow concave plate sieve 2 as possible, the minimum vertical distance between the left end of the conveying and the tangential flow concave plate sieve 1 is 0 to 20mm, the minimum distance between the right end of the conveying and the longitudinal flow concave plate sieve 2 is 0 to 100mm, the vertical, the air flow can blow the light and impurity out of the machine in advance, and the cleaning load is reduced.
as shown in fig. 2, for a three-dimensional schematic diagram of a forced conveying and uniform distribution device for the threshed objects of a combine harvester, the transmission mechanism 7 is composed of a pair of bevel gears i 701, a pair of bevel gears ii 702, a pair of bevel gears iii 703, a pair of bevel gears iv 704 and a transmission shaft 705, each pair of bevel gears are perpendicular to each other and are meshed with each other, one bevel gear of each pair of bevel gears is sleeved on the transmission shaft 705, two ends of the transmission shaft 705 are fixed on a frame of the harvester, the other bevel gear is connected with one end of an auger shaft 402, the auger shaft at the end is fixedly connected with a side plate B304 through a bearing, and the other end of the auger. Bidirectional conveying auger 4 adopts the mode that levogyration auger blade 401, dextrorotation auger blade 403 are arranged in reverse to realize that the stripping thing below the concave sieve 1 that flows surely carries backward, and the stripping thing of the rear portion below the concave sieve 2 that flows of axis of ordinates carries forward, and conveying efficiency is high. According to the distribution position test of the educts, the installation direction of a bevel gear I701 is opposite to the installation directions of a bevel gear II 702, a bevel gear III 703 and a bevel gear IV 704, and the rotating directions of a bidirectional conveying auger 4 connected with the bevel gear I701 are opposite to the rotating directions of other three bidirectional conveying augers 4.
As shown in fig. 3, which is a three-dimensional schematic diagram of an auger bottom plate, the auger bottom plate 3 is provided with 4 auger grooves, the bidirectional conveying auger 4 is located inside the auger grooves, the auger groove bottom plate is located 2-8mm below the edge of the auger blade, the middle position of the bottom end of the auger groove is provided with an auger bottom plate middle section opening 302, the length is between 200 and 300mm, so that the falling position of the escaped objects is located in the front middle of the upper vibrating screen 602, the screen surface area of the upper vibrating screen is effectively utilized, the auger bottom plate middle section opening 302 is opposite to the middle smooth section of the auger shaft 402, and the escaped objects fall into the multi-duct cleaning device 6 from this position for cleaning. The two sides of the opening 302 at the middle section of the bottom plate of the screw conveyer are symmetrically provided with 3 square separation holes 301 (the separation holes are positioned on the same row), the separation holes 301 can also be in the shapes of round, rectangle and waist, the diameter of the round or the maximum length of the square, rectangle and waist is between 50-120mm, the separation holes 301 can not exceed the leftmost side of the upper layer vibrating screen 602 to prevent the stripped objects from not falling onto the screen surface, the separation holes 301 can be in one row or multiple rows (the total length of the distribution of the separation holes 301 is less than or equal to the length of the upper layer vibrating screen 602), the structure increases the uniformity when the stripped objects fall onto the screen surface, the problem that the flow of materials pushed by the left-handed auger blade 401 and the right-handed auger blade 403 fluctuates can be solved, the excessive flow of the threshed objects falling from the opening 302 in the middle section of the bottom plate of the auger in unit time is prevented, part of the threshed objects fall onto the upper vibrating screen 602 in advance, and the cleaning efficiency is improved.
As shown in fig. 4 and 5, the left side views of two bidirectional conveying auger structures with different turning directions are shown, the bidirectional conveying auger 4 comprises a left-handed auger blade 401, an auger shaft 402 and a right-handed auger blade 403; the rotating direction of the bidirectional conveying auger 4 connected with the bevel gears II 702, III 703 and IV 704 is anticlockwise, and the rotating direction of the bidirectional conveying auger 4 connected with the bevel gears I701 is clockwise, so that the four bidirectional conveying augers 4 are prevented from rotating in the same direction, and the stripping products are prevented from being accumulated on one side. The front end blade of the anticlockwise-turning bidirectional conveying auger 4 is a right-handed auger blade 403, the rear end blade is a left-handed auger blade 401, the front end blade of the clockwise-turning bidirectional conveying auger 4 is the left-handed auger blade 401, and the rear end blade is the right-handed auger blade 403. According to the judgment rule of the material moving direction of the screw auger, the two steering bidirectional conveying augers 4 can realize backward movement of the front-end stripping object and forward movement of the rear-end stripping object, namely, the purpose of replacing the traditional shaking plate and the traditional return plate is realized, almost no vibration exists, and the forced conveying capacity is realized. Especially under the big feeding volume harvest operation operating mode, the threshing material flow is great, and miscellaneous and stem stalk is more, very easily takes place to pile up on traditional shake board and return stroke board, is difficult by the equipartition and carries in cleaning plant, and the screw feeder is carried and is not had this problem, can evenly carry the quick conveying of the threshing material of great flow above the shale shaker in force, improves cleaning performance and efficiency.
as shown in fig. 6, for combine threshing thing forced delivery equipartition device structure front view, the auger groove width of auger bottom plate 3 increases in proper order when axis of ordinates flows threshing cylinder anticlockwise rotation, the width is 220mm respectively, 240mm, 270mm, 290mm, auger groove width reduces in proper order when axis of ordinates flows threshing cylinder clockwise rotation, combine to take off thing distribution position experiment, it is easy to pile up on one side to take off the thing, so pile up the position with auger groove width according to taking off the thing and set up to different, can further prevent to take off the thing and take place the unilateral and pile up, it is more even to make the distribution of taking off the thing in the horizontal direction, the operational reliability of bidirectional transport auger 4 has also been increased simultaneously, prevent to block up.
As shown in FIG. 7, for the schematic view of the movement direction of the threshed material and the direction of the air flow, when the harvesting operation is performed, the threshed material is smoothly and transversely and uniformly conveyed to the opening 302 at the middle section of the bottom plate of the auger by the bidirectional conveying auger 4, and then falls to the front middle position of the upper layer vibrating screen 602, wherein part of the threshed material falls to the upper layer vibrating screen 602 in advance through the separation holes 301. In the falling process of the threshed objects, most of the light miscellaneous objects contained in the threshed objects are cleaned in advance by an upper air duct extending air duct 6011, most of the threshed objects are cleaned after the threshed objects are subjected to the combined action of a plurality of air flows of a multi-air duct centrifugal fan 601 and a vibrating screen, the threshed objects penetrating through the rear part of an upper layer vibrating screen 602 and a tail screen 603 enter a horizontal miscellaneous objects auger 502 of a secondary miscellaneous objects auger 5, and then the threshed objects are conveyed to the upper part of the rear part of the threshed object forced conveying and uniform distribution device by a vertical miscellaneous objects auger 501 for secondary cleaning, so that the miscellaneous rate of the harvested grains can be further reduced.
The utility model discloses become the reciprocating motion of traditional return stroke board, the vibration reduces by a wide margin, takes off the thing and carries more smoothly, has the compulsory conveying ability, takes off the thing and is difficult for taking place to pile up, has got rid of the board of shaking simultaneously, has further reduced quality and vibration. In addition, the auger bottom plate 3 transversely adopts an unequal-interval auger groove arrangement mode, and the rotation directions of the bidirectional conveying auger 4 are inconsistent, so that the transverse distribution of the threshing objects entering the screen surface is more uniform, the blockage is not easy, and the cleaning efficiency and the cleaning performance are improved. Compared with the structures such as a shaking plate, a return plate and the like in the traditional cleaning device, the structure is more suitable for the working conditions of large feeding amount, excessive impurity, uneven transverse distribution of the threshing objects and the like in the harvesting process, and the cleaning performance and the cleaning efficiency are better.
Example 2
A combine harvester comprises the forced conveying and uniform distribution device for the threshed objects in the embodiment 1, and the structure and the beneficial effects of the uniform distribution device are as described in the embodiment 1 and are not described again.
the above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any obvious improvements, replacements or modifications which can be made by those skilled in the art without departing from the essence of the present invention belong to the protection scope of the present invention.
Claims (10)
1. combine takes off thing compulsory transport equipartition device, its characterized in that, including two-way transport screw feeder (4), two-way transport screw feeder (4) one end links firmly with drive mechanism (7), and the other end links firmly with screw feeder bottom plate (3), is provided with a pair of opposite direction of rotation's screw feeder blade on screw feeder axle (402) of two-way transport screw feeder (4), and the screw feeder tank bottom of screw feeder bottom plate (3) is equipped with opening (302), screw feeder axle between opposite direction of rotation's the screw feeder blade is relative with opening (302).
2. The forced conveying and uniform distribution device for the threshed objects of the combine harvester as claimed in claim 1, wherein the transmission mechanism (7) comprises n pairs of bevel gears and a transmission shaft (705), each pair of bevel gears are vertically meshed with each other, one bevel gear is sleeved on the transmission shaft (705), the other bevel gear is fixedly connected with the auger shaft (402), and n is more than or equal to 2.
3. The forced conveying and uniform distribution device for the threshed objects of the combine harvester as claimed in claim 1, characterized in that the rotation direction of the bidirectional conveying auger (4) positioned at the leftmost side or the rightmost side is opposite to the rotation direction of the longitudinal axial flow threshing cylinder, and the rotation direction of the other bidirectional conveying auger (4) is the same as the rotation direction of the longitudinal axial flow threshing cylinder.
4. The combine harvester of claim 1, wherein the number of the auger slots is n, and the width of the auger slots decreases in sequence when the longitudinal axial flow threshing cylinder rotates clockwise and increases in sequence when the longitudinal axial flow threshing cylinder rotates counterclockwise.
5. The forced conveying and uniform distribution device for the threshed objects of the combine harvester as claimed in claim 1, wherein a plurality of rows of separation holes (301) are symmetrically arranged on both sides of the opening (302), and the total length of the distribution of the separation holes is less than or equal to the length of the upper layer vibrating screen (602).
6. The forced delivery and uniform distribution device for the threshed objects of the combine harvester as claimed in claim 5, wherein the shape of the separation holes (301) can be round, rectangular, square and kidney-shaped.
7. The forced conveying and uniform distribution device for the threshed objects of the combine harvester as claimed in claim 6, wherein the diameter of the round separation holes is in the range of 50-120mm, and the maximum length of the rectangular, square and kidney-shaped separation holes is in the range of 50-120 mm.
8. The forced delivery and uniform distribution device for the outgassed of the combine harvester as recited in claim 5, wherein the length of the opening (302) is in the range of 200 mm and 300 mm.
9. The forced conveying and uniformly distributing device for the threshed objects of the combine harvester as claimed in any one of the claims 1 to 8, wherein the axial installation direction of the forced conveying and uniformly distributing device forms an angle with the horizontal line within the range of 5 to 15 degrees, the minimum vertical distance between one end of the forced conveying and uniformly distributing device and the tangential flow concave plate sieve is 0 to 20mm, and the minimum distance between the other end of the forced conveying and uniformly distributing device and the longitudinal flow concave plate sieve is 0 to 100 mm.
10. A combine harvester, characterized in that it comprises a forced delivery and distribution device for the threshed as in any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822250547.3U CN209732052U (en) | 2018-12-29 | 2018-12-29 | combine harvester and forced delivery and uniform distribution device for threshed products thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822250547.3U CN209732052U (en) | 2018-12-29 | 2018-12-29 | combine harvester and forced delivery and uniform distribution device for threshed products thereof |
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| CN209732052U true CN209732052U (en) | 2019-12-06 |
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| CN201822250547.3U Expired - Fee Related CN209732052U (en) | 2018-12-29 | 2018-12-29 | combine harvester and forced delivery and uniform distribution device for threshed products thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109588121A (en) * | 2018-12-29 | 2019-04-09 | 江苏大学 | A kind of combined harvester and its emersion object forced conveyance even distribution device |
| US11877538B1 (en) | 2022-08-30 | 2024-01-23 | Calmer Holding Company, Llc | Threshing grains and legumes utilizing concaves with adjustable openings |
| USD1031792S1 (en) | 2022-08-30 | 2024-06-18 | Calmer Holding Company, Llc | Round bar concave |
| USD1031793S1 (en) | 2022-08-30 | 2024-06-18 | Calmer Holding Company, Llc | Separating grate |
| USD1031791S1 (en) | 2022-08-30 | 2024-06-18 | Calmer Holding Company, Llc | Straight bar concave |
| USD1032666S1 (en) | 2022-08-30 | 2024-06-25 | Calmer Holding Company, Llc | MOG limiting subassembly for combine concave |
-
2018
- 2018-12-29 CN CN201822250547.3U patent/CN209732052U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109588121A (en) * | 2018-12-29 | 2019-04-09 | 江苏大学 | A kind of combined harvester and its emersion object forced conveyance even distribution device |
| CN109588121B (en) * | 2018-12-29 | 2024-07-12 | 江苏大学 | Combine harvester and forced conveying and uniformly distributing device for removed matters thereof |
| US11877538B1 (en) | 2022-08-30 | 2024-01-23 | Calmer Holding Company, Llc | Threshing grains and legumes utilizing concaves with adjustable openings |
| USD1031792S1 (en) | 2022-08-30 | 2024-06-18 | Calmer Holding Company, Llc | Round bar concave |
| USD1031793S1 (en) | 2022-08-30 | 2024-06-18 | Calmer Holding Company, Llc | Separating grate |
| USD1031791S1 (en) | 2022-08-30 | 2024-06-18 | Calmer Holding Company, Llc | Straight bar concave |
| USD1032666S1 (en) | 2022-08-30 | 2024-06-25 | Calmer Holding Company, Llc | MOG limiting subassembly for combine concave |
| US12102041B2 (en) | 2022-08-30 | 2024-10-01 | Calmer Holding Company, Llc | Methods and systems for threshing/separating grains and legumes utilizing concaves |
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Granted publication date: 20191206 |
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