Automatic corn threshing device

Abstract

The invention provides an automatic corn threshing device. The automatic corn threshing device mainly comprises a conveying belt, a movable pin inserting mechanism, a combined threshing cutter and a classified collecting structure. Wherein the side direction of the conveying belt is provided with a movable pin inserting mechanism and is provided with a linear motion mechanism; the movable contact pin mechanism is further provided with a telescopic contact pin used for being connected with the root of the corn. And a combined threshing cutter is arranged in the blanking area, is a cutter body dislocation compensation mechanism and is provided with a main cutter and a hidden auxiliary cutter. And a classified collection structure is further arranged below the blanking area. Automatic corn transferring and threshing actions are achieved through the movable pin inserting mechanism, and threshing and grain and core recycling are completed through one-time reciprocating motion in cooperation with the combined threshing knife; complete and smooth threshing operation can be achieved through the design that the hidden auxiliary knife of the combined threshing knife compensates for the main knife, the blade portion of the knife can be complemented in a self-adaptive mode, and therefore threshing work can be well and automatically completed.

Description

Technical Field

[0001] The present invention belongs to the technical field of crop processing, and particularly relates to an automatic corn threshing device. Background Art

[0002] In the modern agricultural production system, corn, as one of the important food crops widely planted globally, its yield and processing efficiency are crucial for ensuring food security and promoting the development of agricultural industrialization. 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 industrial chain. Threshing, as a key link in the post-harvest processing of corn, its efficiency and quality directly affect the costs and benefits of subsequent storage, transportation, and processing and utilization. Efficient threshing operations can achieve the rapid separation of kernels from cobs, reducing the labor intensity and improving the production efficiency for large-scale growers, while providing high-quality raw materials for grain deep processing and feed production. The kernels after corn threshing have characteristics such as small volume, controllable moisture content, and easy standardization packaging. Compared with the whole corn plant, they are more convenient for long-term storage and long-distance transportation, significantly reducing storage costs and logistics losses. In the field of processing and utilization, the threshed corn kernels can be transformed into diversified products through different processes: through fine processing, they can be made into food raw materials such as corn flour and corn starch to meet the diverse food processing needs of baking, steaming, etc.; in the livestock industry, the threshed kernels can be directly used as concentrate feed or made into high-nutrition feed additives through fermentation treatment, providing a stable energy source for livestock breeding. In addition, by-products such as cobs generated during the threshing process can be used for biomass energy production or organic fertilizer processing after treatment, further enhancing the comprehensive economic benefits of corn cultivation. Therefore, achieving efficient and precise threshing operations is an important link in tapping the value potential of the corn industry. Currently, the development of agricultural mechanization has become the core driving force for improving agricultural production efficiency. However, in the corn threshing link in some regions, there is still significant room for improvement in the mechanization level. Affected by geographical environment, climatic conditions, and differences in planting patterns, traditional threshing equipment faces multiple challenges in terms of adaptability, intelligence level, and operation accuracy. For example, in some regions, due to differences in corn variety characteristics (such as ear size, kernel hardness, moisture content, etc.) compared with conventional planting areas, existing mature threshing equipment is prone to problems such as incomplete threshing, high kernel breakage rate, and insufficient separation of cobs from kernels during operation. At the same time, traditional threshing equipment mostly relies on fixed-site operations, lacks adaptability to the scattered operation scenarios in the fields, and has a high operation complexity, making it difficult to meet the usage needs of small-scale growers. Under this background, in some regions, manual threshing methods are still widely relied on, and the separation of kernels is completed by manual breaking or with the assistance of simple tools. This not only consumes a large amount of manpower and material resources, but also is limited by the physical strength and proficiency of the operators, resulting in low threshing efficiency and difficulty in adapting to the development trend of modern agricultural scale and intensification. From the perspective of the current status of technological development, existing corn threshing devices are mainly divided into types such as drum type, rubbing plate type, and centrifugal type. The drum type threshing device realizes the separation of grains through the cooperation of a high-speed rotating drum and a fixed concave plate, and has the advantage of a large processing capacity. However, it has poor adaptability to corn with different moisture contents, and improper adjustment of the drum speed and gap is likely to cause grain breakage. The rubbing plate type threshing device separates grains by using the extrusion and friction between the rubbing plates, and the structure is relatively simple. However, the threshing efficiency is limited by the size of the rubbing plates and the power output, and it is difficult to meet the requirements of large-scale operations. The centrifugal type threshing device realizes the separation of grains and the mandrel through the action of centrifugal force, and has the characteristic of a relatively high degree of automation. However, the equipment manufacturing cost is relatively high, and it has strict requirements on the placement posture of the corn ear, and problems such as missed threshing or incomplete local threshing are likely to occur. In addition, existing threshing equipment generally lacks the function of automatically classifying and collecting grains and the mandrel, and subsequent sorting needs to be carried out manually, which increases the labor intensity and time cost. In terms of intelligence, most equipment does not integrate sensors and control systems, and cannot automatically adjust threshing parameters according to parameters such as corn variety and moisture content, resulting in insufficient operation accuracy and stability. With the change of the agricultural labor force structure and the increase of labor costs, the market has put forward higher requirements for the high efficiency, intelligence, and adaptability of corn threshing equipment. Especially in regions with complex climate conditions and diverse planting varieties, there is an urgent need for a threshing device that can adapt to different environmental conditions and corn characteristics, and realize the integrated operation of threshing and classification collection on the premise of ensuring threshing integrity and grain non-damage rate, and reduce the manual intervention link. In the existing technology, in response to the corn threshing requirements in special environments, although some improved equipment has improved adaptability by optimizing the drum structure and adding flexible threshing components, etc., there is still no breakthrough in the core technology's dependence on specific parameters, and there is still a large room for improvement in the reliability and automation level of the separation mechanism. For example, for corn ears with a relatively high moisture content, existing equipment is difficult to effectively avoid the problems of grain adhesion to the mandrel or mutual extrusion and breakage during the threshing process; for varieties with irregular ear shapes, the positioning mechanism of the threshing device often has problems such as unstable clamping or uneven force, resulting in a decrease in threshing efficiency. In summary, the existing corn threshing technology still cannot fully meet the diverse production needs in terms of adaptability, operation accuracy, and automation level. Especially in scenarios with special environmental conditions and diverse planting varieties, there are problems such as low threshing efficiency, high grain breakage rate, incomplete separation, and high labor intensity of manual sorting. How to design a device that can adapt to different corn characteristics, achieve rapid and accurate threshing, and automatically complete the classification and collection of grains and the mandrel has become a technical problem that urgently needs to be solved to improve the efficiency of corn post-harvest processing and promote the development of agricultural mechanization. Summary of the Invention

[0003] In view of the problems existing in the prior art, the present invention provides an automatic corn threshing device to solve the above problems.

[0004] To achieve the above object, the technical solution adopted by the present invention is as follows: An automated corn threshing device, which includes a conveyor belt, a movable pin insertion mechanism, a combined threshing knife, and a classification and collection structure; Both ends of the conveyor belt are respectively provided with a feeding area and a discharging area; the feeding area is connected to the upper-level corn conveying port; the movable pin insertion mechanism is installed laterally in the discharging area; The movable pin insertion mechanism is provided with a linear motion mechanism for driving the movable pin insertion mechanism to move back and forth between the discharging area and the conveyor belt; the movable pin insertion mechanism is also provided with a telescopic pin for connecting the root of the corn; The combined threshing knife is arranged in the discharging area; the combined threshing knife is a knife body dislocation compensation mechanism, which is provided with a main knife and a hidden secondary knife; the main knife is an annular split petal-like structure with a cavity inside for installing the secondary knife; The classification and collection structure is arranged below the discharging area.

[0005] Further, the combined threshing knife further includes a fixing ring and a main knife elastic reset mechanism; The main knife is arranged in the middle of the fixing ring; Each petal-like part of the main knife is connected to the fixing ring through a corresponding main knife elastic reset mechanism.

[0006] Further, both ends of the knife body of each petal-like part of the main knife are respectively provided with the cavity; the cavity is a semi-open cavity structure; A group of the secondary knives is installed in adjacent two of the cavities.

[0007] Further, the secondary knife includes a fan-shaped ring base, a secondary knife elastic reset mechanism, and a secondary knife head; The fan-shaped ring base is provided with a plurality of secondary knife heads through the secondary knife elastic reset mechanism.

[0008] Further, the cutting edge of the main knife forms a continuous annular cutting edge in the combined state; the cutting edge of the secondary knife is a wedge-shaped cone structure; When the adjacent main knives are separated under force to reach the threshold value, the secondary knife pops out to compensate for the gap of the main knife.

[0009] Further, an elastic clamping structure is installed between the secondary knife and the cavity for centering the secondary knife.

[0010] Further, the conveyor belt is a corrugated conveyor belt, and a position sensor is installed on the side close to the discharging area for detecting the longitudinal positions of the corn and the movable pin insertion mechanism.

[0011] Further, the linear motion mechanism of the movable pin inserting mechanism is a one-dimensional sliding table, and a linear motor is installed on the slider of the sliding table; The telescopic pin is installed at the movable end of the linear motor; A stepped shaft is machined at the end of the telescopic pin, and a vertical corn baffle is installed on the conveyor belt on the opposite side.

[0012] Further, the classification and collection structure includes an X-shaped hopper and a collection box; A partition is provided in the X-shaped hopper, which divides the inside into a core channel and a corn kernel channel; The collection box is a double-chamber structure with an open upper part; The two discharge ends of the X-shaped hopper are respectively connected to the corresponding chambers in the collection box.

[0013] Further, it also includes a main frame; the main frame is a profile splicing frame, the conveyor belt is installed on the upper or middle tabletop, and the blanking area is arranged on the front side; Multiple support rollers are installed on the tabletop of the main frame through bearing supports to support the conveying surface of the conveyor belt; A plurality of brake rollers are installed at the bottom of the main frame.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The present invention realizes the automatic transfer and threshing of corn through the movable pin inserting mechanism, and with the combined threshing knife, it completes threshing and the recovery of grains and cores in one reciprocating motion; the hidden secondary knife compensation main knife design of the combined threshing knife can achieve a complete and smooth threshing operation, without the need to separately pay attention to the shape of corn kernels or the distribution law of particle sizes, and can adaptively complement the cutting edge of the tool, so as to better complete the threshing work. Especially in scenarios with special environmental conditions and diverse planting varieties, it can solve problems such as low threshing efficiency, high grain breakage rate, incomplete separation, and high labor intensity of manual sorting. Description of the Drawings

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0016] Figure 1 It is a three-dimensional view of the device in a specific embodiment of the present invention; Figure 2 It is a three-dimensional view of the installation position of the conveyor belt in a specific embodiment of the present invention; Figure 3Stereogram of the movable pin inserting mechanism in a specific embodiment of the present invention; Figure 4 Stereogram of the combined threshing knife in a specific embodiment of the present invention; Figure 5 Schematic diagram of the internal structure of the combined threshing knife in a specific embodiment of the present invention; Figure 6 Stereogram of the main knife in a specific embodiment of the present invention; Figure 7 Stereogram of the secondary knife in a specific embodiment of the present invention; Figure 8 Perspective view of the combination of the main and secondary knives in a specific embodiment of the present invention; Figure 9 Expansion schematic diagram of the combined threshing knife in a specific embodiment of the present invention; Figure 10 Stereogram of the installation position of the classification and collection structure in a specific embodiment of the present invention.

[0017] In the figure: 1, main frame; 2, conveyor belt; 3, bearing seat; 4, conveyor belt motor; 5, movable pin inserting mechanism; 6, combined threshing knife; 7, classification and collection structure; 8, brake-equipped roller; 201, support roller rotating shaft; 202, support roller; 203, corrugated structure; 204, corn baffle; 205, laser receiving end; 206, laser emitting end; 501, slide table slider; 502, linear motor; 503, telescopic pin; 601, fixed ring; 602, main knife elastic reset mechanism; 603, main knife; 6031, guide rod; 6032, fan-shaped ring part; 6033, cavity; 6034, fan-shaped ring cutting edge; 604, secondary knife; 6041, fan-shaped ring base; 6042, secondary knife return spring; 6043, guide shaft; 6044, secondary knife head; 605, elastic clamping structure; 701, X-shaped hopper; 702, partition; 703, collection box. Detailed implementation manners

[0018] To make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0019] It should be noted that: like reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0020] In the description of the present invention, it should be understood that the relative relationships indicated by terms such as "upper", "lower", "front", etc. are based on the contact order with the material in the rotation direction in actual applications. For the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific position, thus it should not be construed as a limitation to the present invention. It should be noted that "lateral", "longitudinal", and "vertical" respectively represent the short side, long side, and vertical direction of the device or mechanism.

[0021] In the present invention, unless otherwise clearly defined and limited, terms such as "installation" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] It should also be noted that the methods used in the present invention are all conventional methods unless otherwise specified; the raw materials and devices used are all conventional commercially available products unless otherwise specified.

[0023] This application provides an automated corn threshing device, as Figure 1 shown, which mainly includes a main frame 1, a conveyor belt 2, a movable pin mechanism 5, a combined threshing knife, and a sorting and collecting structure 7.

[0024] Among them, the main frame 1 of this embodiment is a frame structure formed by splicing profiles, including upper, middle, and lower layers. Further, the upper-layer frame is used to protect the internal equipment, and the upper-layer frame and the middle-layer frame are used to provide installation positions for some structures or mechanisms. For example, the combined threshing knife of this embodiment is installed between the upper-layer frame and the middle-layer frame. The middle-layer frame is the main table surface and is used to install the conveyor belt 2; while the lower-layer frame is used to stabilize the overall structure, and four braking rollers 8 are installed on the bottom surface, so that the overall device has mobility and is convenient for rapid deployment in multiple scenarios. A blanking area is provided on the front side of the main frame 1 for receiving the threshed cob cores and corn kernels; correspondingly, a feeding area is provided on the rear side of the main frame 1 for docking with the corn conveying port of the previous level, such as a manual sorting blanking port or the discharge port of an automatic conveyor, etc.

[0025] As Figure 2As shown in the figure, the conveyor belt 2 of this embodiment is a straight conveyor belt, specifically a corrugated conveyor belt, with corrugated semi-cylindrical structures arranged side by side on its surface, so that a V-shaped object placement space is formed between two corrugated structures 203, which well adapts to the rod-shaped structure of corn to make the conveying more orderly; a corn cob 9 is clamped between two corrugated structures 203, and the placement direction will be automatically adjusted to be horizontal without manual separate placement. Further, a position sensor is installed on one side of the conveyor belt 2 near the feeding area to detect the longitudinal positions of the corn cob 9 and the movable pin insertion mechanism 5. Among them, the position sensor in this embodiment uses a laser sensor, including a laser emission end 206 and a laser reception end 205, which are symmetrically installed on both sides of the conveyor belt respectively, and their corresponding conveying positions are the clamping intervals of the corn cob 9. When it detects that the corn cob 9 blocks the laser, it can send a signal, or it is used for calibrating the movable pin insertion mechanism 5 at the initial startup. A vertical corn baffle 204 is installed on one side of the conveyor belt 2, which is in a skirt structure and is used to block the corn cob 9 from sliding out of the conveyor belt 2 laterally to cooperate with the movable pin insertion mechanism 5. A plurality of bearing seats 3 are symmetrically and fixedly installed on the middle tabletop of the main frame 1 and are used for rotatably installing and supporting the roller rotating shaft 201 to rotatably connect the support roller 202. Multiple groups of support rollers 201 are located in the conveyor belt 2 and are used to support the conveying surface of the conveyor belt 2. In this embodiment, the support roller 201 near the feeding area is connected to the conveyor belt motor 4 to drive the conveyor belt 2 to operate.

[0026] Thus, the two ends of the conveyor belt 2 respectively correspond to the feeding area and the discharging area, and a movable pin insertion mechanism 5 is installed laterally in the discharging area, which is located on the opposite side of the corn baffle 204. Combining Figure 1 and Figure 2 As shown, the movable pin insertion mechanism 5 of this embodiment includes a linear motion mechanism, a linear motor 502 and a telescopic pin 503. Among them, the linear motion mechanism is used to drive the movable pin insertion mechanism 5 to move back and forth between the discharging area and the conveyor belt 2. It can be selected as a one-dimensional slide table. The slide table slide rail is installed on the main frame 1, and the slide table slider 501 is the active part. There is a motor installed inside, and three groups of rollers are rotatably installed laterally. It is slidably connected to the slide table slide rail in a clamping form, and the motor is connected to at least one roller to drive the slide table slider 501 to reciprocate linearly. A linear motor 502 is installed on the slide table slider 501, and its output shaft is installed with a telescopic pin 503 as the movable end. When the telescopic pin 503 aligns with the root of the corn cob 9, it can be inserted into the core by extending, so as to complete the temporary fixation of the corn cob 9. Further, in order to be able to apply an axial thrust to the corn cob 9 during the subsequent threshing process after the temporary fixation, the end of the telescopic pin 503 in this embodiment is processed with a stepped shaft, and the formed shoulder can prevent the pin from further inserting into the root.

[0027] With the above design, when the corn cob 9 moves along the conveyor belt 2 to the laser sensor detection position, it blocks the laser receiving end 205 from receiving the laser. A signal is sent by the laser sensor to control the temporary stop of the conveyor belt 2, and the movable pin insertion mechanism 5 is controlled to move longitudinally to the specified position according to the preset program. After reaching the position, the telescopic pin 503 is inserted into the root of the corn cob 9. During this period, the lateral displacement of the corn cob 9 is restricted by the corn baffle 204 to cooperate to complete the fixing work. After that, the movable pin insertion mechanism 5 is controlled to return to the blanking area according to the program.

[0028] A combined threshing knife 6 is provided in the blanking area. Figure 1 、 Figures 4 - 9 As shown, the combined threshing knife 6 of this embodiment is a tool body dislocation compensation mechanism, and its main body is installed between the upper frame and the middle frame through a vertically arranged tool mounting seat.

[0029] Furthermore, the combined threshing knife 6 includes a fixing ring 601, a main knife elastic reset mechanism 602, a main knife 603, a secondary knife 604, and an elastic clamping structure 605.

[0030] Among them, the fixing ring 601 is a circular ring structure and is fixedly connected to the tool mounting seat.

[0031] The main knife 603 is an annular split petal-like structure. In this embodiment, it is specifically 5 petal-like parts and forms a complete annular structure in the combined state. In the combined state, the inner side of the main knife 603 is a continuous cylindrical surface, and the end is an annular cutting edge with a reduced radial dimension; a single petal-like part includes a guide rod 6031, a sector ring part 6032, and a sector ring cutting edge 6034. The main body of the main knife elastic reset mechanism 602 is a reset spring. 5 sliding holes are processed on the fixing ring 601, and the guide rod 6031 of each petal-like part is correspondingly inserted into it, and a main knife reset spring is sleeved respectively to form the required reset mechanism. Whenever the petal-like part is stressed, it can move radially, so that the sector ring cutting edge 6034 can adaptively cling to the surface of the cob core during the threshing process.

[0032] Considering that the outer diameter of the cob core of the corn cob 9 is constantly changing, there will be a gap during the expansion process of the main knife 603, and thus there will be a situation where the corn kernels are not threshed. Therefore, a hidden secondary knife 604 is also provided in this embodiment, and a cavity is provided inside the main knife 603 for installing the secondary knife 604. Further, cavities 6033 are respectively provided at both ends of the knife body of each petal-like part of the main knife 603, and the cavity 6033 is a semi-open cavity structure, that is, two adjacent cavities 6033 form a complete closed cavity in the combined state of the main knife 603, which is in a sector ring structure, and a group of secondary knives 604 are correspondingly installed.

[0033] The secondary knife 604 includes a fan-shaped ring base 6041, a secondary knife elastic reset mechanism, and a secondary knife head 6044. In this embodiment, three groups of cutting structures are installed on the fan-shaped ring base 6041. Correspondingly, three blind holes are machined on the base. A guide shaft 6043 is fixedly connected under each secondary knife head 6044 and is slidably connected to the corresponding blind hole. A secondary knife return spring 6042 is sleeved on each guide shaft 6043 to form a secondary knife elastic reset mechanism. The secondary knife head 6044 in this embodiment adopts a wedge-shaped vertebral structure, that is, one side is flat and the other three sides are inclined. The purpose of this design is to retract the secondary knife 604 into the cavity 6033 under the extrusion of the primary knife 603, so as to realize the design of hiding the secondary knife in the combined state of the primary knife. Further, as Figure 8 shown, an elastic clamping structure is installed between the secondary knife 604 and the cavities 6033 on both sides. Specifically, two springs are selected, which are used to center the secondary knife 604. That is, when the primary knife 603 is stressed and unfolded, the secondary knife 604 can be in the middle of the gap and will not be stuck in one of the cavities 6033 due to other frictional effects.

[0034] Preferably, in the above design, in order to prevent the occurrence of edge torsion, a limiting structure can be machined in the guide rod 6031 - fixed ring 601 and the guide shaft 6043 - fan-shaped ring base 6041; specifically, a limiting key is machined at the connection position, and a limiting chute is machined on the sliding part correspondingly, so as to realize the matching form of axial sliding and circumferential limitation.

[0035] Based on the above design, combined with Figure 1 shown, the corn threshing process is as follows: When the movable pin mechanism 5 carries the corn cob 9 to the preset position, the telescopic pin 503 extends out and pushes the corn cob 9 towards the combined threshing knife 6. Since the diameter of the end of the corn cob 9 is small and the corn kernels are shriveled and small, generally no threshing operation is required, so part of it will pass through the hollow area in the middle of the combined threshing knife 6, thus completing the centering operation; then, as the movable pin mechanism 5 continues to push, the crown part of the corn cob 9 contacts the primary knife 603, and its annular edge starts to cut or squeeze the roots of the corn kernels to make them fall off; as the corn cob 9 is continuously pushed, the diameter of its core increases, resulting in a radially outward extrusion force on the petal-shaped parts of the primary knife 603. Therefore, the primary knife 603 unfolds to generate a gap. The initial gap is small and will not cause damage to the corn kernels; however, as the unfolding distance increases, some of the corn kernels at the gap are more and more severely affected by the concentrated extrusion force on both sides of the gap (due to the reduction of the force-bearing area at the roots of the corn kernels), which will cause damage to the corn kernels; therefore, by adjusting the geometric dimension design, such as Figure 9As shown, when the main knife 603 separates to a designed threshold, a secondary knife head 6044 will pop out for compensation to align the main and secondary knife edges, thereby reducing the cutting effect on the roots of the corn kernels. Moreover, the wedge-shaped conical knife head not only helps with subsequent extrusion and storage but also disperses the acting force to both sides. If a wedge-shaped flat knife head is selected, not only can the subsequent operation of storing and hiding the secondary knife not be achieved, but also stress concentration will occur at the lateral tip of the knife head. Especially, the position of the corn kernels cannot be accurately controlled, thus damaging the corn kernels.

[0036] Finally, when the cob of the corn completely passes through the combined threshing knife 6, the main knife 603 recombines under the action of the reset mechanism and retracts each popped-out secondary knife 604 into the corresponding cavity 6033 through the lateral extrusion effect. Correspondingly, since the diameter of the central empty area after the main knife 603 recombines is smaller than the diameter of the root of the cob, therefore, by only controlling the linear motor 502 to contract the telescopic pin 503, the cob can be made to fall off through the blocking effect of the combined threshing knife 6.

[0037] As Figure 1 and Figure 10 shown, a classification and collection structure 7 is provided below the blanking area. Among them, the classification and collection structure 7 includes an X-shaped blanking hopper 701 and a collection box 703.

[0038] The X-shaped blanking hopper 701 has a fork-shaped structure when viewed from the front, and a longitudinal partition 702 is provided therein, thereby dividing the upper feed inlet into two intervals, and cooperating with the two separate blanking channels to form a cob channel and a corn kernel channel.

[0039] The collection box 703 is a double-chamber structure with an open upper part, corresponding to a cob chamber and a corn kernel chamber. Just connect the two discharge ends of the X-shaped blanking hopper 701 to the corresponding chambers in the collection box 703.

[0040] In the above design, the classification and collection structure 7 is placed at the lower part of the blanking area, the opening of the upper cob channel is oriented towards the rear side of the combined threshing knife 6, and the opening of the upper corn kernel channel is oriented towards the front side of the combined threshing knife 6, so as to realize the separate paths and partition recycling of the threshed and fallen materials and the fallen cobs, and the whole process does not require manual participation.

[0041] Finally, it should be noted that the above content is only used to illustrate the technical solution of the present invention, rather than a limitation on the protection scope of the present invention. Any simple modification or equivalent replacement of the technical solution of the present invention by those of ordinary skill in the art does 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 It includes a conveyor belt, a movable pin inserting mechanism, a combined threshing knife, and a classification and collection structure; The two ends of the conveyor belt are respectively provided with a feeding area and a discharging area; the feeding area is connected to the upper-level corn conveying port; the movable pin inserting mechanism is laterally installed at the discharging area; The movable pin inserting mechanism is provided with a linear motion mechanism for driving the movable pin inserting mechanism to move back and forth between the discharging area and the conveyor belt; the movable pin inserting mechanism is also provided with a telescopic pin for connecting the root of the corn; The combined threshing knife is arranged in the discharging area; the combined threshing knife is a knife body dislocation compensation mechanism, which is provided with a main knife and a hidden sub-knife; the main knife is an annular split petal-like structure with a cavity inside for installing the sub-knife; The classification and collection structure is arranged below the discharging area.

2. The automated corn threshing device according to claim 1, wherein The combined threshing knife further includes a fixing ring and a main knife elastic reset mechanism; The main knife is arranged in the middle of the fixing ring; Each petal-like part of the main knife is connected to the fixing ring through a corresponding main knife elastic reset mechanism.

3. The automated corn threshing device according to claim 1, characterized in that, Both ends of the knife body of each petal-like part of the main knife are respectively provided with the cavity; the cavity is a semi-open cavity structure; A set of sub-knives is installed in two adjacent cavities.

4. The automated corn threshing device according to claim 1, characterized in that, The sub-knife includes a fan-shaped ring base, a sub-knife elastic reset mechanism, and a sub-knife head; The fan-shaped ring base is provided with a plurality of sub-knife heads through the sub-knife elastic reset mechanism.

5. The automated corn threshing device according to claim 1, characterized in that, The cutting edge of the main knife forms a continuous annular cutting edge in the combined state; the cutting edge of the sub-knife is a wedge-shaped cone structure; When the adjacent main knives are separated by force to reach the threshold, the sub-knife pops out to compensate for the gap of the main knife.

6. The automated corn threshing device according to claim 1, characterized in that, An elastic clamping structure is installed between the sub-knife and the cavity for centering the sub-knife.

7. The automated corn threshing device according to claim 1, wherein, The conveyor belt is a corrugated conveyor belt, and a position sensor is installed on the side close to the discharging area for detecting the longitudinal positions of the corn and the movable pin inserting mechanism.

8. The automated corn threshing device according to claim 1, characterized in that, The linear motion mechanism of the movable pin inserting mechanism is a one-dimensional slide table, and a linear motor is installed on the slide block of the slide table; The movable end of the linear motor is provided with the telescopic pin; The end of the telescopic pin is processed with a stepped shaft, and a vertical corn baffle is installed on the conveyor belt on the opposite side.

9. The automated corn threshing device according to claim 1, wherein, The classification and collection structure includes an X-shaped hopper and a collection box; A partition is arranged in the X-shaped hopper, dividing the inside into a core channel and a corn kernel channel; The collection box is a double-chamber structure with an open upper part; The two discharge ends of the X-shaped hopper are respectively connected to the corresponding chambers in the collection box.

10. The automated corn threshing device according to claim 1, characterized in that, It further includes a main frame; the main frame is a profile splicing frame, and the conveyor belt is installed on the table top of the upper part or the middle part, and the discharging area is arranged on the front side; A plurality of support rollers are installed on the table top of the main frame through bearing supports for supporting the conveying surface of the conveyor belt; A plurality of brake rollers are installed at the bottom of the main frame.

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