Sectional type cyperus esculentus threshing roller and harvester

Abstract

The sectional type cyperus esculentus threshing roller comprises a threshing main shaft, and the threshing main shaft is sequentially divided into a primary threshing section, a secondary separation section and a final screening section in the axial direction of the threshing main shaft; a plurality of trapezoidal threshing teeth are distributed on the primary threshing section along the spiral line of the threshing main shaft at intervals, and sawteeth are arranged on the side surfaces of the trapezoidal threshing teeth; a spiral blade is fixed on the secondary separation section, and the spiral direction of the spiral blade is the same as that of the trapezoidal threshing teeth; flexible threshing elastic finger pieces are fixed to the final screening section at intervals in the axial direction of the threshing main shaft, and each flexible threshing elastic finger piece is provided with a plurality of elastic finger shifting teeth fixed at intervals in the circumferential direction of the threshing main shaft. The sectional type design is carried out on the threshing roller in the harvester, so that the cyperus esculentus can be thoroughly separated from root hair, the crushing of the cyperus esculentus can be reduced, and the threshing efficiency and the yield of the harvester are improved.

Description

Technical Field

[0001] The invention relates to the technical field of harvesters, in particular to a segmented cyperus juncea threshing roller and a harvester. Background Art

[0002] Cyperus juncea is an annual herb with a high oil yield, four times that of soybeans and twice that of rapeseed per unit area. It is an important oilseed cash crop in my country. Cyperus juncea has a strong tillering ability, with a single seed producing over 300-400 berries. The berries and roots intertwine to form a rhizome cake approximately 400 mm in diameter and 150 mm thick. The greatest challenge in harvesting cyperus juncea is separating the berries from the enveloping roots. Failure to fully harvest or berry breakage during harvesting directly impacts yield and breakage rates. Existing cyperus threshing methods rely on a single metal device within the machine to separate the berries from the roots through hammering and rolling friction. This results in incomplete berry-root separation, a high breakage rate, and weak, impact-resistant threshing components, all of which directly impact cyperus juncea yield and yield. Therefore, there is a need for a segmented cyperus threshing roller and harvester. Summary of the Invention

[0003] The purpose of the present invention is to provide a segmented cyperus juncea threshing roller and a harvester, wherein the threshing roller is segmented and can completely separate the cyperus juncea and roots, reduce the breakage of the cyperus juncea, and improve the threshing efficiency and yield of the harvester.

[0004] The technical solution adopted by the present invention is: a segmented cyperus threshing roller, comprising a threshing main shaft, which is divided into a primary threshing section, a secondary separation section and a final screening section along its axial direction; A plurality of trapezoidal threshing teeth are distributed along the spiral line of the threshing main axis on the primary threshing section, and the side surfaces of the trapezoidal threshing teeth are provided with saw teeth; A spiral blade is fixed on the secondary separation section, and the spiral direction of the spiral blade is the same as the spiral direction of the trapezoidal threshing teeth; Flexible threshing finger pieces are fixed at axial intervals along the threshing main shaft on the final screening section, and each flexible threshing finger piece has a plurality of finger-moving teeth with fixed circumferential intervals along the threshing main shaft.

[0005] As a preferred solution, the threshing main shaft is divided into three short shafts according to the primary threshing section, the secondary separation section and the final screening section, and adjacent short shafts are fixedly connected by flanges and bolts.

[0006] As a preferred solution, the length ratio of the primary threshing section, the secondary separation section and the final screening section in the axial direction of the threshing main shaft is 1:1:1.

[0007] As a preferred solution, the diameter of the threshing main shaft of the secondary separation section is smaller than the diameter of the threshing main shaft of the primary threshing section and the final screening section.

[0008] As a preferred solution, the trapezoidal threshing tooth comprises a threshing tooth base fixed on the threshing main shaft and a trapezoidal tooth plate detachably connected to the threshing tooth base; The upper bottom of the trapezoidal tooth plate is away from the threshing main shaft, the serrations are located on the waist surface of the trapezoidal tooth plate, and the angle between the trapezoidal tooth plate and the cross section of the threshing main shaft is an acute angle.

[0009] As a preferred solution, the trapezoidal tooth plate is a hard nylon plate.

[0010] As a preferred solution, the interval between the trapezoidal threshing teeth is 20 mm, the tooth width is 120 mm, and the thickness is 20 mm; the spiral blade is 240 mm wide, 15 mm thick, and has a pitch of 450 mm; and the tooth height of the flexible threshing finger member is 205 mm.

[0011] As a preferred solution, the flexible threshing finger-flicking member further comprises a rubber sleeve, the rubber sleeve is fixedly sleeved on the threshing main shaft, and the finger-flicking teeth are fixed on the rubber sleeve; One end of the finger-moving tooth away from the threshing main shaft is in an arc shape.

[0012] As a preferred solution, the finger-moving teeth are rubber plates.

[0013] A harvester comprises a screen drum, wherein a segmented cyperus juncea threshing roller is provided in the inner cavity of the screen drum, and a feed port and a discharge port are respectively provided at positions of the screen drum corresponding to a primary threshing section and a final screening section.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The threshing roller of the present invention is provided with trapezoidal threshing teeth, spiral blades and flexible threshing finger pieces in sequence for the root cake of cyperus juncea, which can effectively improve the efficiency of cyperus juncea separation. 2. The threshing main shaft, trapezoidal threshing teeth and flexible threshing finger parts of the threshing roller of the present invention are all detachable, which is convenient for early processing and later replacement; 3. The harvester of the present invention sequentially arranges a primary threshing section, a secondary separation section and a final screening section with different processing methods according to the changes of the rhizome cake during the processing process, and performs sequential separation processing, which can effectively improve the threshing efficiency and yield of the harvester. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 Schematic diagram of the threshing roller in the present invention; Figure 2 It is a front view schematic diagram of the threshing roller in the present invention; Figure 3 Schematic diagram of the trapezoidal threshing teeth in the present invention; Figure 4 Schematic diagram of the flexible threshing finger member of the present invention; Figure 5 It is a partial schematic diagram of the harvester in the present invention.

[0017] Figure numerals: 1. threshing main shaft, 2. trapezoidal threshing teeth, 201. threshing tooth base, 202. trapezoidal tooth plate, 203. sawtooth, 3. spiral blade, 4. flexible threshing finger-flick part, 401. rubber sleeve, 402. finger-flicking teeth, 5. screen cylinder, 501. feed port, 502. discharge port, 6. flange. DETAILED DESCRIPTION

[0018] The present invention is described in detail below by way of exemplary embodiments. However, it should be understood that elements, structures, and features in one embodiment may also be beneficially combined in other embodiments without further description.

[0019] It should be noted that: unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning understood by persons having ordinary skills in the field to which the invention belongs. The words "one", "an" or "the" and the like used in the patent application specification and claims of the present invention do not express a quantity limitation, but indicate the existence of at least one; the words "first", "second" and "third" used herein shall not be regarded as a limitation on the order of components, but are only used to distinguish different components; the words "include" or "comprise" and the like indicate that the elements or objects appearing before "include" or "comprise" include the elements or objects listed after "include" or "comprise" and their equivalents, but do not exclude other elements or objects with the same function.

[0020] In order to more clearly describe the specific structure of the segmented cyperus threshing roller and harvester, Figure 1-5 Describe this embodiment: like Figure 1-4As shown, a segmented cyperus oleiferus threshing roller comprises a threshing main shaft 1, which is divided into a primary threshing section I, a secondary separation section II, and a final screening section III along its axial direction. A plurality of trapezoidal threshing teeth 2 are arranged at intervals along the spiral line of the threshing main shaft 1 in the primary threshing section, and the side surfaces of the trapezoidal threshing teeth 2 have serrations 203. The spirally arranged trapezoidal threshing teeth 2 can exert shearing and squeezing forces on the cyperus oleiferus root cake. The hard nylon trapezoidal tooth plates with serrations 203 are used to flexibly tear the interwoven roots in the cake, thereby facilitating the rapid separation of the cyperus oleiferus (fruits) with a low breakage rate. The secondary separation section is fixed with spiral blades 3, and the spiral direction of the spiral blades 3 is the same as that of the trapezoidal threshing teeth 2. The spiral blades 3 in the middle section cooperate with the shearing of the trapezoidal threshing teeth 2 in the front section, and then use centrifugal force to throw the broken cyperus globules, loosening the cyperus root clusters again to facilitate threshing of the cyperus globules. In addition, the cyperus globules impurities passing through the spiral blades 3 can be controlled to maintain a certain amount to enter the rear section, so that the rear section (discharge port) will not be entangled by a large amount of cyperus globulus grass (the part of the cyperus globulus crop above the ground). Flexible threshing finger pieces 4 are fixed at axial intervals along the threshing main shaft 1 on the final screening section. Each flexible threshing finger piece 4 has a plurality of finger-picking teeth 402 fixed at circumferential intervals along the threshing main shaft 1. Finally, the finger-picking teeth 402 are rotated to thresh the remaining cyperus juncea to improve the threshing rate, and at the same time, the cyperus juncea grass is loosened to facilitate the subsequent fan removal.

[0021] In the above embodiment, in order to reduce replacement cost, the threshing main shaft 1 can be divided into three short shafts according to the primary threshing section, the secondary separation section and the final screening section, and adjacent short shafts are fixedly connected by flanges 6 and bolts.

[0022] Specifically, the length ratio of the primary threshing section, the secondary separation section and the final screening section in the axial direction of the threshing main shaft 1 is approximately 1:1:1, and can also be appropriately adjusted according to actual conditions.

[0023] The diameter of the threshing main shaft 1 of the secondary separation section is smaller than that of the threshing main shaft 1 of the primary threshing section and the final screening section. The small diameter of the middle shaft can increase the contact area between the spiral blade 3 and the cyperus juncea mass, resulting in a better threshing effect.

[0024] See Figure 3 The trapezoidal threshing teeth 2 with spiral gap distribution can displace the root cake of cyperus juncea along the axial direction of the threshing main shaft 1 while processing, thus preventing the root cake from accumulating in the primary threshing section I. This design enables the threshing roller to resist the impact of hard impurities such as stones during the threshing process, and protects the cyperus juncea from breaking during the threshing process, thereby reducing the breakage rate. The trapezoidal threshing tooth 2 includes a threshing tooth base 201 fixed on the threshing main shaft 1 and a trapezoidal tooth plate 202 detachably connected to the threshing tooth base 201. The detachable design facilitates the separate replacement of the excessively worn trapezoidal tooth plate 202; the trapezoidal tooth plate 202 is a hard nylon plate with relatively balanced toughness and hardness. On the one hand, it can ensure that sufficient shear force is applied to the root cake of the cyperus juncea, and at the same time, it can reduce the damage caused by direct contact with the cyperus juncea; specifically, the upper bottom of the trapezoidal tooth plate 202 is away from the threshing main shaft 1, and the serrations 203 are on the waist surface of the trapezoidal tooth plate 202 (the surface where the waist of the trapezoid is located). The lower end of the trapezoidal tooth plate 202 (the end close to the threshing main shaft) is drafted outward by 2° relative to the upper end (the end away from the threshing main shaft), and the angle between the trapezoidal tooth plate 202 and the cross section of the threshing main shaft 1 is 10°.

[0025] See Figure 4 The flexible threshing finger member 4 also includes a rubber sleeve 401, the rubber sleeve 401 is fixedly sleeved on the threshing main shaft 1, and the finger-picking tooth 402 is fixed on the rubber sleeve 401; the finger-picking tooth 402 is a rubber plate; the end of the finger-picking tooth 402 away from the threshing main shaft 1 is arc-shaped.

[0026] In the design of a specific case, the interval between the trapezoidal threshing teeth 2 is 20 mm, the tooth width is 120 mm, and the thickness is 20 mm; the spiral blade 3 is 240 mm wide, 15 mm thick, and has a pitch of 450 mm; the number of finger-moving teeth 402 in each flexible threshing finger-moving member 4 is 12, the tooth height is 205 mm, and the radius of the tooth end arc is 5 mm.

[0027] See Figure 5 A harvester includes a screen drum 5, the inner cavity of which is provided with a segmented cyperus threshing roller. The screen drum 5 is provided with a feed port 501 and a discharge port 502 at positions corresponding to the primary threshing section I and the final screening section III, respectively. The cyperus threshing crop enters from the feed port 501 and is processed in sequence by the rotating trapezoidal threshing teeth 2, the spiral blades 3 and the flexible threshing finger pieces 4. The separated cyperus threshing beans (fruits) are screened out from the sieve holes on the peripheral surface of the screen drum 5 and collected by the harvester's collecting mechanism, and the rhizomes are discharged from the discharge port 502.

[0028] Parts not described in detail in the above embodiments are prior art.

[0029] It should be noted that although the present invention has been described with reference to the above embodiments, the present invention may also have other various embodiments. Without departing from the spirit and scope of the present invention, it is obvious that those skilled in the art may make various corresponding changes and modifications to the present invention, and such changes and modifications shall fall within the scope of protection of the appended claims and their equivalents.

Claims

1. A segmented cyperus juncea threshing roller, characterized by: The threshing main shaft (1) is divided into a primary threshing section, a secondary separation section and a final screening section in sequence along its axial direction; A plurality of trapezoidal threshing teeth (2) are distributed along the spiral line of the threshing main axis (1) on the primary threshing section, and the side surfaces of the trapezoidal threshing teeth (2) have saw teeth (203); A spiral blade (3) is fixed on the secondary separation section, and the spiral direction of the spiral blade (3) is the same as the spiral direction of the trapezoidal threshing teeth (2); Flexible threshing finger pieces (4) are fixed at axial intervals along the threshing main shaft (1) on the final screening section, and each flexible threshing finger piece (4) has a plurality of finger-moving teeth (402) at fixed circumferential intervals along the threshing main shaft (1).

2. The segmented cyperus juncea threshing roller according to claim 1, characterized in that: The threshing main shaft (1) is divided into three short shafts according to the primary threshing section, the secondary separation section and the final screening section, and the adjacent short shafts are fixedly connected by flanges and bolts.

3. The segmented cyperus juncea threshing roller according to claim 1, characterized in that: The length ratio of the primary threshing section, the secondary separation section and the final screening section in the axial direction of the threshing main shaft (1) is 1:1:

1.

4. The segmented cyperus juncea threshing roller according to claim 1, characterized in that: The diameter of the threshing main shaft (1) of the secondary separation section is smaller than the diameters of the threshing main shaft (1) of the primary threshing section and the final screening section.

5. The segmented cyperus juncea threshing roller according to claim 1, characterized in that: The trapezoidal threshing tooth (2) comprises a threshing tooth base (201) fixed on the threshing main shaft (1) and a trapezoidal tooth plate (202) detachably connected to the threshing tooth base (201); The upper base of the trapezoidal tooth plate (202) is away from the threshing main shaft (1), the saw teeth (203) are located on the waist surface of the trapezoidal tooth plate (202), and the angle between the trapezoidal tooth plate (202) and the cross section of the threshing main shaft (1) is an acute angle.

6. The segmented cyperus juncea threshing roller according to claim 5, characterized in that: The trapezoidal tooth plate (202) is a hard nylon plate.

7. The segmented cyperus juncea threshing roller according to claim 1, characterized in that: The interval between the trapezoidal threshing teeth (2) is 20 mm, the tooth width is 120 mm, and the thickness is 20 mm; the spiral blade (3) is 240 mm wide, 15 mm thick, and has a pitch of 450 mm; and the tooth height of the flexible threshing finger member (4) is 205 mm.

8. The segmented cyperus juncea threshing roller according to claim 1, characterized in that: The flexible threshing finger-trigger member (4) further comprises a rubber sleeve (401), the rubber sleeve (401) being fixedly sleeved on the threshing main shaft (1), and the finger-trigger teeth (402) being fixed on the rubber sleeve (401); The end of the finger-moving tooth (402) away from the threshing main shaft (1) is in an arc shape.

9. The segmented cyperus juncea threshing roller according to claim 1, characterized in that: The finger-moving teeth (402) are rubber plates.

10. A harvester comprising a screen drum (5), characterized in that: The inner cavity of the screen drum (5) is provided with a segmented cyperus juncea threshing roller as claimed in any one of claims 1 to 9, and the screen drum (5) is provided with a feed port (501) and a discharge port (502) at positions corresponding to the primary threshing section and the final screening section, respectively.

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