An automated maize threshing device

Abstract

This invention provides an automated corn threshing device, which mainly includes a conveyor belt, a movable pin mechanism, a combined threshing blade, and a sorting and collecting structure. The movable pin mechanism is mounted laterally on the conveyor belt and includes a linear motion mechanism; the movable pin mechanism also includes telescopic pins for connecting to the root of the corn kernels. A combined threshing blade, with a blade misalignment compensation mechanism, is located in the material discharge area, consisting of a main blade and a concealed secondary blade. A sorting and collecting structure is located below the material discharge area. This invention achieves automated corn transfer and threshing through the movable pin mechanism, and, in conjunction with the combined threshing blade, completes threshing and kernel / cob recovery in a single reciprocating motion. The concealed secondary blade of the combined threshing blade compensates for the main blade, enabling a complete and smooth threshing operation and adaptively supplementing the blade edge, thus achieving better automation of the threshing process.

Description

Technical Field

[0001] This invention belongs to the field of agricultural crop processing technology, specifically relating to an automated corn threshing device. Background Technology

[0002] In modern agricultural production systems, corn, as one of the most widely cultivated food crops globally, plays a crucial role in ensuring food security and promoting the industrialization of agriculture through its yield and processing efficiency. Corn is not only an important raw material for human staple food and food processing, but also a core component of livestock feed, occupying a fundamental position in the agricultural industry chain. Threshing, as a key post-harvest processing step for corn, directly impacts the cost and efficiency of subsequent storage, transportation, and processing. Efficient threshing operations enable rapid separation of kernels and cobs, reducing labor intensity and increasing production efficiency for large-scale farmers, while simultaneously providing high-quality raw materials for deep grain processing and feed production.

[0003] Corn kernels, after threshing, are characterized by their small size, controllable moisture content, and ease of standardized packaging. Compared to whole corn plants, they are easier to store for long periods and transport over long distances, significantly reducing storage costs and logistical losses. In processing, threshed corn kernels can be transformed into diverse products through various processes: after fine processing, they can be made into food ingredients such as corn flour and corn starch, meeting the diverse processing needs of baked goods, steamed foods, and more; in animal husbandry, threshed kernels can be used directly as concentrated feed or fermented to produce high-nutritional-value feed additives, providing a stable energy source for livestock and poultry farming. Furthermore, byproducts such as the stalks generated during threshing can be processed for biomass energy production or organic fertilizer processing, further enhancing the overall economic benefits of corn cultivation. Therefore, achieving efficient and precise threshing operations is a crucial step in unlocking the value potential of the corn industry.

[0004] Currently, agricultural mechanization has become a core driving force for improving agricultural production efficiency. However, in some regions, there is still significant room for improvement in the level of mechanization in corn threshing. Due to differences in geographical environment, climate conditions, and planting patterns, traditional threshing equipment faces multiple challenges in terms of adaptability, intelligence, and operational precision. For example, in some regions, the characteristics of corn varieties (such as ear size, kernel hardness, and moisture content) differ from those in conventional planting areas, leading to problems such as incomplete threshing, high kernel breakage rates, and insufficient separation of the cob from the kernel when using existing mature threshing equipment. Furthermore, traditional threshing equipment often relies on fixed locations, lacking adaptability to dispersed field operations, and its high operational complexity makes it difficult to meet the needs of small-scale farmers. Against this backdrop, some regions still heavily rely on manual threshing methods, separating kernels by hand or with simple tools. This not only consumes a large amount of manpower and resources but also suffers from low threshing efficiency due to limitations in the operator's physical strength and skill level, making it difficult to adapt to the trend of large-scale and intensive development in modern agriculture.

[0005] From the perspective of current technological development, existing corn threshing devices are mainly divided into drum type, swirl plate type, and centrifugal type. Drum type threshing devices separate kernels through the cooperation of a high-speed rotating drum and a fixed concave plate, offering the advantage of high throughput. However, they have poor adaptability to corn with different moisture contents, and improper adjustment of drum speed and gap can easily lead to kernel breakage. Swirl plate threshing devices separate kernels using the squeezing friction between swirl plates. Their structure is relatively simple, but threshing efficiency is limited by the size of the swirl plates and power output, making it difficult to meet the needs of large-scale operations. Centrifugal threshing devices separate kernels from the cob through centrifugal force, featuring a high degree of automation. However, the equipment manufacturing cost is high, and strict requirements are placed on the placement of the corn ears, easily leading to missed threshing or incomplete threshing in certain areas. Furthermore, existing threshing equipment generally lacks automatic sorting and collection functions for kernels and cobs, requiring manual sorting afterward, increasing labor intensity and time costs. In terms of intelligence, most equipment does not integrate sensors and control systems, failing to automatically adjust threshing parameters based on corn variety, moisture content, and other parameters, resulting in insufficient operational accuracy and stability.

[0006] With changes in the agricultural labor force structure and rising labor costs, the market demands higher efficiency, intelligence, and adaptability from corn threshing equipment. Especially in regions with complex climates and diverse crop varieties, there is an urgent need for a threshing device that can adapt to different environmental conditions and corn characteristics, achieving integrated threshing and sorting collection while ensuring threshing integrity and kernel damage-free rates, reducing manual intervention. While some improved equipment has enhanced adaptability by optimizing drum structures and adding flexible threshing components to meet the needs of corn threshing in special environments, it still lacks a breakthrough in core technologies that rely on specific parameters, and the reliability and automation level of the separation mechanism still have significant room for improvement. For example, for corn ears with high moisture content, existing equipment struggles to effectively prevent kernels from sticking to the cob or being crushed during threshing; for varieties with irregular ear shapes, the positioning mechanism of the threshing device often experiences unstable clamping or uneven force, leading to decreased threshing efficiency.

[0007] In summary, existing corn threshing technologies still cannot fully meet diverse production needs in terms of adaptability, operational precision, and automation. This is especially true in scenarios with special environmental conditions and diverse crop varieties, where problems such as low threshing efficiency, high kernel breakage rate, incomplete separation, and high labor intensity in manual sorting persist. Designing a device that can adapt to different corn characteristics, achieve rapid and precise threshing, and automatically complete the separation and collection of kernels and cobs has become a pressing technical challenge for improving post-harvest corn processing efficiency and promoting agricultural mechanization. Summary of the Invention

[0008] In view of the problems existing in the prior art, the present invention provides an automated corn threshing device to solve the above-mentioned problems.

[0009] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0010] An automated corn threshing device includes a conveyor belt, a movable pin insertion mechanism, a combined threshing blade, and a sorting and collecting structure;

[0011] The conveyor belt has a feeding area and a dropping area at both ends; the feeding area is connected to the corn conveying port of the previous stage; the movable pin mechanism is installed on the side of the dropping area;

[0012] The movable pin mechanism is equipped with a linear motion mechanism for driving the movable pin mechanism to move back and forth between the material dropping area and the conveyor belt; the movable pin mechanism is also equipped with a telescopic pin for connecting the root of the corn.

[0013] The material feeding area is equipped with the combined threshing blade; the combined threshing blade is a blade misalignment compensation mechanism, which is equipped with a main blade and a hidden secondary blade; the main blade is a ring-shaped split petal structure with an internal cavity for installing the secondary blade;

[0014] The sorting and collection structure is located below the material discharge area.

[0015] Furthermore, the combined threshing blade also includes a fixing ring and a main blade elastic reset mechanism;

[0016] The main blade is located in the middle of the fixing ring;

[0017] Each of the flaps of the main blade is connected to the fixing ring via a corresponding main blade elastic reset mechanism.

[0018] Furthermore, each of the flaps of the main blade has cavities at both ends; the cavities are semi-open cavity structures.

[0019] A set of secondary blades is installed in two adjacent cavities.

[0020] Furthermore, the secondary blade includes a fan ring base, a secondary blade elastic reset mechanism, and a secondary blade head;

[0021] The fan ring base is equipped with multiple secondary blades via the secondary blade elastic reset mechanism.

[0022] Furthermore, the blade of the main blade is a continuous annular blade in the combined state; the blade of the secondary blade is a wedge-shaped cone structure.

[0023] When the force separation between adjacent main blades reaches a threshold, the secondary blade pops out to compensate for the gap between the main blades.

[0024] Furthermore, an elastic clamping structure is installed between the secondary blade and the cavity to center the secondary blade.

[0025] Furthermore, the conveyor belt is a corrugated conveyor belt, and a position sensor is installed on the side near the material drop area to detect the longitudinal position of the corn and the movable pin mechanism.

[0026] Furthermore, the linear motion mechanism of the movable pin mechanism is a one-dimensional slide table, and a linear motor is installed on the slide table slider;

[0027] The telescopic pin is installed on the movable end of the linear motor;

[0028] The telescopic pin has a stepped shaft at its end, and a vertical corn baffle is installed on the conveyor belt on the opposite side.

[0029] Furthermore, the sorting and collection structure includes an X-shaped hopper and a collection box;

[0030] The X-shaped hopper is equipped with a partition, which divides the interior into a core channel and a corn kernel channel;

[0031] The collection box has a double-compartment structure with an open top;

[0032] The two discharge ends of the X-shaped hopper are respectively connected to the corresponding compartments in the collection box.

[0033] Furthermore, it also includes a main frame; the main frame is a profile splicing frame, the conveyor belt is installed on the upper or middle platform, and the material dropping area is provided on the front side;

[0034] Multiple sets of support rollers are installed on the platform of the main frame via bearing supports to support the conveying surface of the conveyor belt.

[0035] The bottom of the main frame is equipped with multiple braked rollers.

[0036] Compared with the prior art, the present invention has the following beneficial effects:

[0037] This invention achieves automated corn transfer and threshing through a movable pin mechanism, and, in conjunction with a combined threshing blade, completes threshing and kernel / cocoon recovery in a single reciprocating motion. The concealed secondary blade of the combined threshing blade compensates for the main blade, enabling a complete and smooth threshing operation without needing to focus on the shape or size distribution of corn kernels. It can adaptively supplement the blade edge, thus completing the threshing work better. Especially in scenarios with special environmental conditions and diverse planting varieties, it can solve problems such as low threshing efficiency, high kernel breakage rate, incomplete separation, and high labor intensity of manual sorting. Attached Figure Description

[0038] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0039] Figure 1 This is a perspective view of the device in a specific embodiment of the present invention;

[0040] Figure 2 This is a perspective view of the conveyor belt mounting position in a specific embodiment of the present invention;

[0041] Figure 3 This is a perspective view of the movable pin mechanism in a specific embodiment of the present invention;

[0042] Figure 4 This is a perspective view of the combined threshing blade in a specific embodiment of the present invention;

[0043] Figure 5 This is a schematic diagram of the internal structure of the combined threshing knife in a specific embodiment of the present invention;

[0044] Figure 6 This is a perspective view of the main blade in a specific embodiment of the present invention;

[0045] Figure 7 This is a perspective view of the secondary blade in a specific embodiment of the present invention;

[0046] Figure 8 This is a perspective view of the main and secondary blade assembly in a specific embodiment of the present invention;

[0047] Figure 9 This is a schematic diagram of the combined threshing blade in a specific embodiment of the present invention;

[0048] Figure 10 This is a three-dimensional view of the categorized collection structure installation position in a specific embodiment of the present invention.

[0049] In the diagram: 1. Main frame; 2. Conveyor belt; 3. Bearing housing; 4. Conveyor belt motor; 5. Movable pin insertion mechanism; 6. Combined threshing knife; 7. Sorting and collecting structure; 8. Roller with brake; 201. Support roller shaft; 202. Support roller; 203. Corrugated structure; 204. Corn baffle; 205. Laser receiver; 206. Laser emitter; 501. Slide block; 502. Linear motor; 503. Telescopic pin. 601. Fixed ring; 602. Main blade elastic reset mechanism; 603. Main blade; 6031. Guide rod; 6032. Fan ring part; 6033. Cavity; 6034. Fan ring blade part; 604. Secondary blade; 6041. Fan ring base; 6042. Secondary blade reset spring; 6043. Guide shaft; 6044. Secondary blade head; 605. Elastic clamping structure; 701. X-shaped feed hopper; 702. Partition; 703. Collection box. Detailed Implementation

[0050] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0051] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0052] In the description of this invention, it should be understood that the relative relationships indicated by terms such as "upper," "lower," and "front" are based on the order of contact with the material in the rotational direction in actual application, and are used for the convenience of describing the invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, and therefore should not be construed as a limitation of the invention. It should be noted that "lateral," "longitudinal," and "vertical" represent the short side, long side, and vertical direction of the device or mechanism, respectively.

[0053] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0054] It should also be noted that, unless otherwise specified, the methods used in this invention are conventional methods; and the raw materials and apparatus used are, unless otherwise specified, conventional commercially available products.

[0055] This application provides an automated corn threshing device, such as... Figure 1 As shown, it mainly includes a main frame 1, a conveyor belt 2, a movable needle insertion mechanism 5, a combined threshing knife, and a sorting and collection structure 7.

[0056] In this embodiment, the main frame 1 adopts a frame structure formed by splicing profiles, including upper, middle, and lower layers. The upper frame protects the internal equipment, and the upper and middle frames provide mounting positions for some structures or mechanisms, such as the combined threshing blade installed between the upper and middle frames in this embodiment. The middle frame serves as the main platform for mounting the conveyor belt 2; while the lower frame stabilizes the overall structure and has four braked rollers 8 installed on its bottom surface, thus enabling the overall device to be mobile and easily deployed in various scenarios. A material discharge area is provided on the front side of the main frame 1 to receive the threshed corn cobs and kernels; correspondingly, a material discharge area is provided on the rear side of the main frame 1 to connect to the corn conveying port of the previous stage, such as a manual sorting discharge port or the discharge port of an automatic conveyor.

[0057] like Figure 2As shown, the conveyor belt 2 in this embodiment is a straight conveyor belt, specifically a corrugated conveyor belt. Its surface is decorated with parallel corrugated semi-cylindrical structures, creating a V-shaped storage space between two corrugated structures 203. This space is well-suited to the rod-shaped structure of corn, making the conveying more orderly. A corn cob 9 is clamped between the two corrugated structures 203, and the placement direction is automatically adjusted to the lateral direction, eliminating the need for manual placement. Furthermore, a position sensor is installed on the side of the conveyor belt 2 near the material drop area to detect the longitudinal position of the corn cob 9 and the movable pin mechanism 5. In this embodiment, the position sensor is a laser sensor, including a laser emitter 206 and a laser receiver 205, symmetrically installed on both sides of the conveyor belt. The corresponding conveying position is the clamping area of ​​the corn cob 9. When the corn cob 9 is detected blocking the laser, a signal can be sent, or it can be used during the initial calibration of the movable pin mechanism 5. A vertical corn baffle 204 with a skirt-like structure is installed on one side of the conveyor belt 2 to prevent the corn cobs 9 from sliding laterally off the conveyor belt 2, in conjunction with the movable pin insertion mechanism 5. Multiple bearing seats 3 are symmetrically fixed on the central platform of the main frame 1, and are used to rotatably mount the support roller shaft 201 to rotatably connect the support roller 202. Multiple sets of support rollers 201 are located within the conveyor belt 2 to support the conveying surface of the conveyor belt 2. In this embodiment, the support roller 201 near the material drop area is connected to the conveyor belt motor 4, thereby driving the conveyor belt 2 to operate.

[0058] Therefore, the two ends of the conveyor belt 2 correspond to the feeding area and the discharge area, respectively, and a movable pin insertion mechanism 5 is installed on the side of the discharge area, located opposite the corn baffle 204. Figure 1 and Figure 2 As shown, the movable pin mechanism 5 in this embodiment includes a linear motion mechanism, a linear motor 502, and a telescopic pin 503. The linear motion mechanism drives the movable pin mechanism 5 to reciprocate between the material dropping area and the conveyor belt 2. It can be a one-dimensional slide table, with the slide table rail mounted on the main frame 1. The slide table slider 501 is the driving component, housing a motor internally. Three sets of rollers are laterally mounted and slidably connected to the slide table rail via clamping. The motor is connected to at least one roller to drive the slide table slider 501 in reciprocating linear motion. The linear motor 502 is mounted on the slide table slider 501, and its output shaft, as the movable end, is fitted with a telescopic pin 503. When aligned with the root of the corn cob 9, the telescopic pin 503 can extend and insert into the core of the cob, thereby temporarily fixing the corn cob 9. Furthermore, in order to apply axial thrust to the corn cob 9 during the subsequent threshing process after temporary fixation, this embodiment designs the end of the telescopic pin 503 to be machined with a stepped shaft, and the shoulder formed therein can prevent the pin from being further inserted into the root.

[0059] With the above design, when the corn cob 9 moves along the conveyor belt 2 to the laser sensor detection position, the laser receiver 205 is blocked from receiving the laser. The laser sensor sends a signal to control the conveyor belt 2 to stop temporarily. According to the preset program, the movable pin mechanism 5 is controlled to move longitudinally to the designated position. After it is in place, the telescopic pin 503 is inserted into the root of the corn cob 9. During this period, the corn baffle 204 restricts the lateral displacement of the corn cob 9 to complete the fixing work. Afterwards, the movable pin mechanism 5 is controlled to return to the dropping area according to the program.

[0060] The material feeding area is equipped with a combined threshing blade 6. Figure 1 , Figures 4-9 As shown, the combined threshing knife 6 in this embodiment is a knife body misalignment compensation mechanism, the main body of which is installed between the upper frame and the middle frame through a vertically arranged knife mounting seat.

[0061] Furthermore, the combined threshing blade 6 includes a fixing ring 601, a main blade elastic reset mechanism 602, a main blade 603, a secondary blade 604, and an elastic clamping structure 605.

[0062] The retaining ring 601 is a circular ring structure, which is fixedly connected to the tool mounting base.

[0063] The main blade 603 is a ring-shaped, split, petal-like structure. In this embodiment, it consists of five petal-like parts, which together form a complete ring structure. In the combined state, the inner side of the main blade 603 is a continuous cylindrical surface, and the end is a radially tapering annular cutting edge. Each petal-like part includes a guide rod 6031, a fan-shaped ring 6032, and a fan-shaped ring cutting edge 6034. The main body of the main blade elastic reset mechanism 602 is a reset spring. Five sliding holes are machined on the fixed ring 601, and the guide rods 6031 of each petal-like part are inserted into them respectively. The main blade reset spring is then fitted onto each of these holes, thus forming the required reset mechanism. Whenever a petal-like part is subjected to force, it can move radially, thereby allowing the fan-shaped ring cutting edge 6034 to adaptively and tightly adhere to the bar core surface during threshing.

[0064] Considering the continuous change in the outer diameter of the corn cob 9, gaps may exist during the unfolding of the main blade 603, potentially resulting in unthreshed corn kernels. Therefore, this embodiment also includes a concealed secondary blade 604, with a cavity inside the main blade 603 for mounting the secondary blade 604. Furthermore, each end of the blade body of the main blade 603 has a cavity 6033, which is a semi-open cavity structure. That is, two adjacent cavities 6033 form a completely closed cavity in the combined state of the main blade 603, which has a fan-ring structure, and a set of secondary blades 604 are installed accordingly.

[0065] The secondary blade 604 includes a fan-ring base 6041, a secondary blade elastic reset mechanism, and a secondary blade head 6044. In this embodiment, the fan-ring base 6041 is equipped with three sets of cutting structures. Correspondingly, the base is machined with three blind holes. Each secondary blade head 6044 is fixedly connected to a guide shaft 6043, which is slidably connected to the corresponding blind hole. Each guide shaft 6043 is fitted with a secondary blade reset spring 6042 to form the secondary blade elastic reset mechanism. In this embodiment, the secondary blade head 6044 adopts a wedge-shaped conical structure, i.e., one side is flat, and the other three sides are inclined. The purpose of this design is to allow the secondary blade 604 to retract into the cavity 6033 under the compression of the main blade 603, thereby achieving the design of hiding the secondary blade in the main blade assembly state. Further, as... Figure 8 As shown, an elastic clamping structure is installed between the secondary blade 604 and the cavities 6033 on both sides. Specifically, two springs are selected to center the secondary blade 604. That is, when the main blade 603 is unfolded under force, the secondary blade 604 can be in the middle of the gap and will not be stuck in the cavity 6033 on one side due to other friction.

[0066] Preferably, in the above design, in order to prevent the cutting edge from twisting, a limiting structure can be machined in the guide rod 6031-fixed ring 601 and the guide shaft 6043-fan ring base 6041; specifically, a limiting key is machined at the connection position, and a limiting groove is machined on the sliding part accordingly, so as to realize the axial sliding and circumferential limiting cooperation form.

[0067] Based on the above design, combined with Figure 1 As shown, the corn threshing process is as follows:

[0068] When the movable pin mechanism 5 carries the corn cob 9 to the preset position, the telescopic pin 503 extends, pushing the corn cob 9 towards the combined threshing knife 6. Since the corn cob 9 has a small end diameter and the kernels are shriveled and small, threshing is generally unnecessary; therefore, part of it will pass through the hollow area in the middle of the combined threshing knife 6, thus completing the centering operation. Afterward, as the movable pin mechanism 5 continues to push, the crown-shaped part of the corn cob 9 contacts the main blade 603, and its annular blade begins to cut or squeeze the root of the kernel, causing it to fall off. As the corn cob 9 continues to be pushed, its core diameter increases, causing the lobes of the main blade 603 to be subjected to radially outward squeezing force. This causes the main blade 603 to unfold, creating a gap. Initially, the gap is small and does not cause kernel breakage. However, as the unfolding gap increases, some kernels in the gap experience increasingly severe concentrated squeezing force on both sides of the gap (due to a reduction in the force-bearing area at the kernel root), leading to kernel breakage. Therefore, by adjusting the geometric design, such as... Figure 9As shown, when the main blade 603 separates to a designed threshold, a secondary blade head 6044 pops out for compensation, aligning the main and secondary blade edges to reduce the cutting effect on the root of the corn kernel. The wedge-shaped cone blade head not only helps with subsequent compression and storage but also disperses the force to both sides. If a wedge-shaped straight blade head is used, it will not only be impossible to achieve the subsequent storage and hiding of the secondary blade but will also cause stress concentration at the lateral tip of the blade head. In particular, the position of the corn kernel cannot be accurately controlled, which will damage the corn kernel.

[0069] Finally, after the corn cob has completely passed through the combined threshing blades 6, the main blades 603 are reassembled under the action of the reset mechanism, and the ejected auxiliary blades 604 are retracted into their corresponding cavities 6033 by lateral squeezing. Correspondingly, since the diameter of the central empty area after the main blades 603 are combined is smaller than the diameter of the root of the cob, it is only necessary to control the linear motor 502 to retract the telescopic pin 503 to allow the cob to fall off by the blocking action of the combined threshing blades 6.

[0070] like Figure 1 and Figure 10 As shown, a sorting and collection structure 7 is provided below the material discharge area. The sorting and collection structure 7 includes an X-shaped discharge hopper 701 and a collection box 703.

[0071] The X-shaped feed hopper 701 has a fork-shaped structure in its main view, with a longitudinal partition 702 that divides the upper feed inlet into two sections. Together with the two separate feed channels, they form a core channel and a corn kernel channel.

[0072] The collection box 703 has a double-compartment structure with an open top, corresponding to a cob compartment and a corn kernel compartment. The two discharge ends of the X-shaped hopper 701 can be connected to the corresponding compartments in the collection box 703.

[0073] In the above design, the sorting and collection structure 7 is placed at the bottom of the material drop area, and the opening of the upper bar core channel faces the rear of the combined threshing knife 6, while the opening of the upper corn kernel channel faces the front of the combined threshing knife 6. This achieves separate paths and zoned recycling of threshing and dropping of kernels and bar cores, without the need for manual intervention throughout the process.

[0074] Finally, it should be noted that the above content is only used to illustrate the technical solution of the present invention, and is not intended to limit the scope of protection of the present invention. Simple modifications or equivalent substitutions made by those skilled in the art to the technical solution of the present invention do not depart from the essence and scope of the technical solution of the present invention.

Claims

1. An automated corn threshing device, characterized in that, Includes a conveyor belt, a movable needle insertion mechanism, a combined threshing blade, and a sorting and collection structure; The conveyor belt has a feeding area and a dropping area at both ends; the feeding area is connected to the corn conveying port of the previous stage; the movable pin mechanism is installed on the side of the dropping area; The movable pin mechanism is equipped with a linear motion mechanism for driving the movable pin mechanism to move back and forth between the material dropping area and the conveyor belt; the movable pin mechanism is also equipped with a telescopic pin for connecting the root of the corn. The material feeding area is equipped with the combined threshing blade; the combined threshing blade is a blade misalignment compensation mechanism, which includes a main blade and a concealed secondary blade; the main blade is a ring-shaped, split, petal-like structure with an internal cavity for installing the secondary blade; the cutting edge of the main blade is a continuous ring-shaped blade in the combined state; the cutting edge of the secondary blade is a wedge-shaped conical structure; when the force separation between adjacent main blades reaches a threshold, the secondary blade pops out to compensate for the gap between the main blades; The sorting and collection structure is located below the material discharge area.

2. The automated corn threshing device according to claim 1, characterized in that, The combined threshing blade also includes a fixing ring and a main blade elastic reset mechanism; The main blade is located in the middle of the fixing ring; Each of the flaps of the main blade is connected to the fixing ring via a corresponding main blade elastic reset mechanism.

3. The automated corn threshing device according to claim 1, characterized in that, The main blade has cavities at both ends of each petal-shaped portion of the blade body; the cavities are semi-open cavity structures. A set of secondary blades is installed in two adjacent cavities.

4. The automated corn threshing device according to claim 1, characterized in that, The secondary blade includes a fan ring base, a secondary blade elastic reset mechanism, and a secondary blade head; The fan ring base is equipped with multiple secondary blades via the secondary blade elastic reset mechanism.

5. The automated corn threshing device according to claim 1, characterized in that, An elastic clamping structure is installed between the secondary blade and the cavity to center the secondary blade.

6. The automated corn threshing device according to claim 1, characterized in that, The conveyor belt is a corrugated conveyor belt, and a position sensor is installed on the side near the material drop area to detect the longitudinal position of the corn and the movable pin mechanism.

7. The automated corn threshing device according to claim 1, characterized in that, The linear motion mechanism of the movable pin mechanism is a one-dimensional slide table, and a linear motor is installed on the slide table slider. The telescopic pin is installed on the movable end of the linear motor; The telescopic pin has a stepped shaft at its end, and a vertical corn baffle is installed on the conveyor belt on the opposite side.

8. The automated corn threshing device according to claim 1, characterized in that, The sorting and collection structure includes an X-shaped hopper and a collection box; The X-shaped hopper is equipped with a partition, which divides the interior into a core channel and a corn kernel channel; The collection box has a double-compartment structure with an open top; The two discharge ends of the X-shaped hopper are respectively connected to the corresponding compartments in the collection box.

9. The automated corn threshing device according to claim 1, characterized in that, It also includes a main frame; the main frame is a profile splicing frame, the conveyor belt is installed on the upper or middle platform, and the material dropping area is set on the front side; Multiple sets of support rollers are installed on the platform of the main frame via bearing supports to support the conveying surface of the conveyor belt. The bottom of the main frame is equipped with multiple braked rollers.

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