Bionic metacarpal muscle corn flexible threshing system

Abstract

This invention relates to the field of agricultural threshing machinery technology, specifically a biomimetic palm-muscle flexible corn threshing system, comprising: a threshing drum shell; the threshing drum shell being located within a threshing chamber formed by a top cover and a combined concave sieve; the combined concave sieve is a cylindrical tube type, wherein the straight cylindrical tubes in the front half of the concave sieve are inclined inwards and loosely installed, while the different inclined cylindrical tubes are connected by arc-shaped cylindrical tubes to prevent corn from falling out during threshing; the rear half of the concave sieve is an arc-shaped cylindrical tube with no inclination angle and densely installed cylindrical tubes; combined threshing elements, including biomimetic palm-muscle flexible threshing elements and round-headed spikes; multiple round-headed spikes are spirally arranged in the first third section of the threshing drum shell; multiple biomimetic palm-muscle flexible threshing elements are spirally arranged in the rear two-thirds section of the threshing drum shell. This invention enables flexible threshing and low-loss harvesting of corn kernels.

Description

Technical Field

[0001] This invention belongs to the field of agricultural threshing machinery technology, and in particular relates to a biomimetic palm muscle flexible corn threshing system. Background Technology

[0002] The existing corn kernel harvesters have a high kernel breakage rate during the threshing process. The main reason for this is that the corn kernels have a high moisture content at harvest time, resulting in lower mechanical properties and increasing the risk of breakage during harvesting.

[0003] In existing threshing systems, the threshing element and the corn ear mostly collide rigidly, and the threshing element is unable to provide the collision force required for the corn ear to thresh. According to the inventor's search, such as the invention patent with application number CN2018108955339, which discloses a flexible threshing drum for a corn harvester, this solution uses multiple sets of flexible spike teeth and elastic short grooved rods as threshing elements, which reduces corn threshing loss. However, the polyurethane rubber flexible spike teeth are easily worn and fail during the threshing process, and the grooved rod threshing element has relatively obvious edges, which will aggravate corn threshing breakage to a certain extent during the threshing collision. Summary of the Invention

[0004] Based on the advantage of low kernel breakage rate during manual bare hand threshing, this invention provides a biomimetic palm muscle flexible corn threshing system. This system can reduce losses caused by rigid collisions during threshing and uses a combined circular tube concave plate screen to reduce rigid collisions, thus solving the problem of high kernel breakage during corn harvesting and threshing.

[0005] To achieve the above objectives, embodiments of the present invention provide the following technical solution: a biomimetic palmar muscle flexible corn threshing system, comprising:

[0006] The threshing drum shell is located within the threshing chamber formed by the top cover and the combined concave sieve. The combined concave sieve is a cylindrical tube type. In the first half of the concave sieve, the straight cylindrical tubes are inclined inward at 6°-12° and are loosely installed. The spacing between the inclined straight cylindrical tubes is 13-18mm. Small arc-shaped cylindrical tubes connect the different straight cylindrical tubes to prevent corn from falling out during threshing. The second half of the concave sieve is a large arc-shaped cylindrical tube with no inclination angle and the large arc-shaped cylindrical tubes are densely installed. The spacing between the large arc-shaped cylindrical tubes is 7-9mm.

[0007] A combined threshing element, comprising a biomimetic palmar muscle flexible threshing element and round-headed spikes; a plurality of the round-headed spikes are spirally arranged in the first third section of the threshing drum shell; a plurality of the biomimetic palmar muscle flexible threshing elements are spirally arranged in the last two-thirds section of the threshing drum shell.

[0008] As a further limitation of the present invention, the bionic palmar muscle flexible threshing element includes a threshing element base plate, and four base plate mating supports are fixedly disposed on the threshing element base plate; the base plate mating supports are mated and installed with the bionic palmar muscle threshing component mating supports.

[0009] The bionic palm muscle threshing component is fixedly installed on the support.

[0010] As a further limitation of the present invention, the base plate mating support is provided with a circular hole, and the outer sides of the base plate mating support at both ends are provided with limiting teeth.

[0011] The bionic palm muscle threshing component has a square hole on the support. The base plate support and the bionic palm muscle threshing component support are connected by a square nail. The torque spring is installed between the base plate support and the bionic palm muscle threshing component support by the square nail.

[0012] As a further limitation of the present invention, the limiting shim is fixedly installed on the outside of the base plate mating support by a square nail, and the limiting teeth on the base plate mating support are constrained in the limiting hole on the limiting shim. A square hole shim is installed on the outside of the limiting shim, and a cotter pin is inserted into the square nail slot hole to prevent the square hole shim from moving outward.

[0013] As a further limitation of the present invention, the base plate of the threshing element has an arcuate structure that fits with the threshing drum shell.

[0014] As a further limitation of the present invention, the top cover and the combined concave plate screen are fixedly connected by a support frame; the end of the support frame is fixedly installed with a bracket tail guide plate that matches the tail opening of the combined concave plate screen, and the bracket tail guide plate is used to convey and discharge the corn ears after threshing.

[0015] As a further limitation of the present invention, an end cover is provided at the front opening of the threshing chamber; a spiral feeding device is coaxially connected to one end of the threshing drum shell, and the spiral feeding device is located inside the input end cover.

[0016] As a further limitation of the present invention, the bionic palmar muscle threshing component is a protruding structure with a palmar muscle curved surface, which is 40-50mm long, 30-40mm wide, and 10-15mm high. The bionic palmar muscle threshing component is fixedly installed on the bionic palmar muscle threshing component matching support and can rotate around the square nail within the range of constraint of the limiting teeth and the limiting pad.

[0017] Compared with existing technologies, the beneficial effects of the biomimetic palmar muscle flexible corn threshing system of the present invention are:

[0018] First, the present invention uses limiting teeth, limiting pads and dual torque springs to regulate the movement range of the curved bionic palm muscle threshing component. At the same time, the bionic palm muscle threshing component imitates the shape of human palm muscles, changing the rigid collision contact between the ear of corn and the threshing element during the corn kernel harvesting and threshing process to a flexible collision contact, realizing real-time imitation of the corn ear of corn during the threshing process, reducing the kernel breakage rate during the corn harvesting and threshing process, and realizing flexible threshing and low-loss harvesting of corn kernels.

[0019] Secondly, the combined concave sieve of the present invention has a relatively loose front section of round tubes during threshing, which can achieve rapid separation of corn kernels, improve threshing efficiency and reduce repeated collision damage to kernels, while the rear section of round tubes is denser, which can strengthen the threshing intensity of corn and improve the threshing rate. At the same time, the round tube concave sieve can reduce the collision damage between the concave sieve and the corn ears, reduce the probability of corn husks clogging the concave sieve, and reduce the intensity of subsequent cleaning and grading work. Attached Figure Description

[0020] Figure 1 This is a perspective view of a biomimetic palmar muscle flexible corn threshing system according to an embodiment of the present invention;

[0021] Figure 2 for Figure 1 The diagram shows an exploded structure of a biomimetic palmar muscle flexible corn threshing system.

[0022] Figure 3 for Figure 1 A schematic diagram of the structure of the biomimetic palmar muscle flexible threshing element is shown.

[0023] Figure 4 for Figure 3 The diagram shows the working angle range of the biomimetic palmar muscle flexible threshing element.

[0024] The attached figures are labeled as follows:

[0025] 1. Spiral feeding device; 2. Threshing drum shell; 3. Top cover; 4. Tail guide plate of the support; 5. Support frame; 6. Combined concave plate screen; 61. Straight round tube; 62. Small arc round tube; 63. Large arc round tube; 7. Bionic palm muscle flexible threshing element; 8. Round-headed nail teeth; 9. Input end cover; 10. Bionic palm muscle threshing assembly; 11. Square hole gasket; 12. Cotter pin; 13. Square nail; 14. Restricting gasket; 15. Limiting tooth; 16. Bionic palm muscle threshing assembly with support; 17. Base plate with support; 18. Torque spring; 19. Threshing element base plate. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0027] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0028] Please refer to Figure 1 In one embodiment of this disclosure, a biomimetic palmar muscle flexible corn threshing system is provided, including a threshing drum housing 2; the threshing drum housing 2 is located within the threshing chamber formed by the top cover 3 and the combined concave sieve 6.

[0029] The top cover 3 and the combined concave sieve 6 are fixedly connected by a support frame 5; the end of the support frame 5 is fixedly installed with a support tail guide plate 4 that matches the open tail end of the combined concave sieve 6, and the support tail guide plate 4 is used to convey and discharge the corn ears after threshing.

[0030] Furthermore, an end cap 9 is provided at the front opening of the threshing chamber;

[0031] A spiral feeding device 1 is coaxially connected to one end of the threshing drum shell 2. The spiral feeding device 1 is located inside the input end cover 9. The corn ears to be threshed are put into the input end cover 9, and the spiral feeding device 1 is used to transport the corn ears into the threshing chamber for threshing. During the threshing process, the corn kernels fall through the combined concave sieve 6 and are discharged. The corn cobs are sent to the end opening of the combined concave sieve 6 as the threshing drum shell 2 continues to rotate in the chamber, and are then transported and discharged through the guide plate 4 at the tail of the support.

[0032] Please continue to refer to Figure 1 and Figure 2 In this embodiment of the disclosure, a combined threshing element is installed on the threshing drum housing 2, which includes a biomimetic palmar muscle flexible threshing element 7 and round-headed nail teeth 8.

[0033] Specifically, in this embodiment, a plurality of round-headed nail teeth 8 are spirally arranged in the first third section of the threshing drum housing 2; a plurality of bionic palm muscle flexible threshing elements 7 are spirally arranged in the last two third sections of the threshing drum housing 2.

[0034] Optionally, in this embodiment, the combined concave sieve 6 is entirely made of cylindrical tubes. In the first half of the concave sieve, the straight cylindrical tubes 61 are inclined inwards at 6°-12° and are loosely installed, with a spacing of 13-18mm between the inclined tubes. Small arc-shaped cylindrical tubes 62 connect the different straight cylindrical tubes 61 to prevent corn from falling out during threshing. The second half of the concave sieve consists of large arc-shaped cylindrical tubes 63, without any inclination angle and densely installed, with a spacing of 7-9mm between them. The relatively loose arrangement of the front section of the tubes during threshing allows for rapid separation of the corn kernels, improving threshing efficiency and reducing repeated collision damage. The denser arrangement of the rear section of tubes strengthens the threshing intensity and increases the threshing rate. Simultaneously, the cylindrical tube concave sieve reduces collision damage between the sieve and the corn ears, decreases the probability of corn husks clogging the sieve, and reduces the workload of subsequent cleaning and grading.

[0035] For further details, please refer to Figure 3 and Figure 4 In this embodiment of the present disclosure, the bionic palmar flexible threshing element 7 includes a threshing element base plate 19, the threshing element base plate 19 having an arcuate structure that fits with the threshing drum shell 2, and four base plate mating supports 17 fixedly disposed on the threshing element base plate 19. The base plate mating supports 17 have round holes, and limiting teeth 15 are provided on the outer sides of the base plate mating supports 17 located at both ends.

[0036] The base plate mating support 17 is fitted with the bionic palm muscle threshing component mating support 16. The bionic palm muscle threshing component mating support 16 has a square hole. The base plate mating support 17 and the bionic palm muscle threshing component mating support 16 are connected by a square nail 13. At the same time, the torque spring 18 is installed between the base plate mating support 17 and the bionic palm muscle threshing component mating support 16 through the square nail 13.

[0037] The bionic palmar muscle threshing component is mounted on the support 16. The limiting gasket 14 is fixedly installed on the outside of the base plate support 17 by the square nail 13, and the limiting tooth 15 on the base plate support 17 is constrained in the limiting hole on the limiting gasket 14. A square hole gasket 11 is installed on the outside of the limiting gasket 14. The cotter pin 12 is inserted into the slot of the square nail 13, and the square hole gasket 11 is prevented from moving outward.

[0038] Furthermore, in this embodiment of the present disclosure, the bionic palmar muscle flexible threshing element 7 has a basic pre-tightening force due to the torque spring 18, which restricts the lower end face of the limiting hole in the inner pad 14 to fit with the lower end face of the limiting tooth 15. This is the initial state of the bionic palmar muscle flexible threshing element 7.

[0039] During threshing, the corn ears collide with the bionic palm-muscle threshing component 10, causing it to rotate around the square nail 13. The maximum rotation is achieved when the uppermost end face of the limiting hole in the limiting pad 14 is in contact with the upper end face of the limiting tooth 15. Due to the compression effect of the rotation of the bionic palm-muscle threshing component 10 around the square nail 13, the torque spring 18 causes the bionic palm-muscle threshing component 10 to rebound and return to its initial state. The magnitude of the rebound force is directly proportional to the rotation angle of the bionic palm-muscle threshing component 10 around the square nail 13. As the threshing process continues, it provides a variable threshing force for the bionic palm-muscle threshing component 10 to rotate continuously within its rotation range, thereby reducing the grain breakage rate.

[0040] Please continue reading. Figure 3 and Figure 4 Based on the principle of manual bare-hand threshing, the bionic palm muscle threshing component 10 is designed as a convex structure with a palm muscle curved surface, 40-50mm long, 30-40mm wide, and 10-15mm high, through the use of human palm muscle contouring and reverse molding technology. The bionic palm muscle threshing component 10 is fixedly installed on the bionic palm muscle threshing component support 16. During the threshing process, it is subjected to the external force of the corn ear and can rotate around the square nail 13 within the range constrained by the limiting teeth 15 and the limiting pad 14.

[0041] The above solutions are merely illustrative examples of preferred embodiments and are not intended to limit the scope of the invention. Appropriate substitutions and / or modifications can be made according to user needs when implementing this invention.

[0042] The number of devices and processing scale described herein are for the purpose of simplifying the description of the invention. Applications, modifications, and variations of the invention will be readily apparent to those skilled in the art.

[0043] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0044] Although embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and embodiments. It can be applied to various fields suitable for the present invention. Other modifications can be readily made by those skilled in the art. Therefore, without departing from the general concept defined by the claims and their equivalents, the present invention is not limited to the specific details and examples shown and described herein.

Claims

1. A biomimetic palmar muscle flexible corn threshing system, characterized in that, include: The threshing drum shell (2) is located in the threshing chamber formed by the top cover (3) and the combined concave sieve (6); the combined concave sieve (6) is a cylindrical tube type, wherein the straight cylindrical tubes (61) in the first half of the concave sieve are inclined inward at 6°-12° and the straight cylindrical tubes (61) are loosely installed, the spacing between the inclined straight cylindrical tubes (61) is 13-18mm, and small arc-shaped cylindrical tubes (62) are connected between different straight cylindrical tubes (61); the concave sieve in the second half is a large arc-shaped cylindrical tube (63), with no inclination angle and the large arc-shaped cylindrical tubes (63) are densely installed, and the spacing between the large arc-shaped cylindrical tubes (63) is 7-9mm. A combined threshing element, comprising a bionic palmar muscle flexible threshing element (7) and round-headed spikes (8); a plurality of the round-headed spikes (8) are spirally arranged in the first third section of the threshing drum housing (2); a plurality of the bionic palmar muscle flexible threshing elements (7) are spirally arranged in the last two third sections of the threshing drum housing (2). The bionic palm muscle flexible threshing element (7) includes a threshing element base plate (19), on which four base plate mating supports (17) are fixedly installed; the base plate mating supports (17) are mated with the bionic palm muscle threshing component mating supports (16), and the bionic palm muscle threshing component mating supports (16) are fixedly installed with the bionic palm muscle threshing component mating supports (10); the bionic palm muscle threshing component (10) is a convex structure with a palm muscle curved surface, which is 40-50mm long, 30-40mm wide, and 10-15mm high. The bionic palm muscle threshing component (10) is fixedly installed on the bionic palm muscle threshing component mating supports (16), and can rotate around the square nail (13) within the range constrained by the limiting teeth (15) and the limiting pads (14) following the bionic palm muscle threshing component mating supports (16); The base plate mating support (17) has a round hole, and the base plate mating support (17) at both ends has a limiting tooth (15) on its outer side. The bionic palm muscle threshing component has a square hole on the support (16). The base plate support (17) and the bionic palm muscle threshing component support (16) are connected by a square nail (13). The torque spring (18) is installed between the base plate support (17) and the bionic palm muscle threshing component support (16) by the square nail (13).

2. The biomimetic palmar muscle flexible corn threshing system according to claim 1, characterized in that, The limiting gasket (14) is fixedly installed on the outside of the base plate mating support (17) by the square nail (13), and the limiting tooth (15) on the base plate mating support (17) is constrained in the limiting hole on the limiting gasket (14). A square hole gasket (11) is installed on the outside of the limiting gasket (14), and the cotter pin (12) is inserted into the slot of the square nail (13) to prevent the square hole gasket (11) from moving outward.

3. The biomimetic palmar muscle flexible corn threshing system according to claim 2, characterized in that, The threshing element base plate (19) has an arc structure that fits into the threshing drum shell (2).

4. The biomimetic palmar muscle flexible corn threshing system according to any one of claims 1-3, characterized in that, The top cover (3) and the combined concave plate screen (6) are fixedly connected by a support frame (5); The end of the support frame (5) is fixedly installed with a support tail guide plate (4) that matches the tail opening of the combined concave plate screen (6).

5. The biomimetic palmar muscle flexible corn threshing system according to claim 4, characterized in that, An end cap (9) is provided at the front opening of the threshing chamber; A spiral feeding device (1) is coaxially connected to one end of the threshing drum shell (2); The spiral feeder (1) is located inside the input end cover (9).

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