Anti-blocking header for corn harvester

Abstract

The application belongs to the technical field of crop harvesting and discloses a corn harvester with a blockage-preventing header, which comprises a mounting frame, an outlet is formed in the outer surface of one end of the mounting frame, and a rotating material guide rod is arranged in the mounting frame. Both ends of the material guide rod penetrate through the outer surface of the mounting frame. The corn harvester with the blockage-preventing header is provided with a linkage transmission system composed of linkage tooth chains, driven gears, center gears, material stripping gears, material stirring gears, dynamic gears and transmission chains. The linkage transmission system can efficiently transmit power from the material guide rod to each functional component under the header. A spring support rod is arranged between the material stirring gear and the dynamic gear, which can exert dynamic tension on the transmission chain to effectively prevent the chain from slipping and relaxing due to material winding or impact, thereby ensuring the reliability of transmission and realizing orderly stirring, dredging and crushing of the fed stems, bracts and other materials to prevent the materials from being accumulated and wound at key positions.

Description

Technical Field

[0001] This invention relates to the field of crop harvesting technology, specifically to an anti-clogging header for a corn harvester. Background Technology

[0002] As a major food crop, mechanized harvesting of corn is crucial for improving production efficiency. The header, as the core working component of a corn harvester, directly affects the overall operating efficiency and harvest quality. Currently, existing corn harvester headers face the following pressing technical problems in practical applications: First, clogging is the most common obstacle to the continuous and efficient operation of the header, especially when harvesting corn with high moisture content, high plant density, or lodging. A large number of stalks, leaves, husks, and weeds are very likely to get tangled, accumulated, and clogged in the header's feed inlet, conveyor chain rake, ear-picking roller gap, and elevator. This not only forces the machine to stop frequently for manual cleaning, which seriously reduces operating efficiency and increases the labor intensity of the operator, but may also damage the transmission system due to excessive instantaneous load. Secondly, another prominent problem with existing headers during operation is the lack of an effective real-time collection and recycling mechanism for the inevitable falling kernels that occur after the ears of corn have been picked. These fallen corn kernels are usually scattered directly in the field and cannot be sent to the granary along with the main harvested ears, resulting in significant yield loss. This is especially true when harvesting varieties with high maturity and low kernel moisture content, where the loss of kernels is even more severe. The essence of this problem is that the header's functional design focuses more on cutting the stalks and picking and transporting the ears, while lacking an effective online collection and return design for the small economic products (i.e., fallen kernels) that are generated during the operation and can be recycled. This leads to incomplete harvesting and reduced economic benefits. Therefore, in view of the problems of easy clogging of the header and the loss caused by the inability to collect corn kernels that fall during operation in the existing technology, there is an urgent need for a new anti-clogging header design. This design should effectively improve the smoothness of material passage and integrate kernel recycling function to achieve more efficient and thorough mechanized corn harvesting. Summary of the Invention

[0003] The purpose of this invention is to provide an anti-clogging header for a corn harvester, in order to solve the problems mentioned in the background art, such as the header being prone to clogging when harvesting crops with high moisture, high density, or lodged crops, and the lack of effective real-time collection function for fallen corn kernels during ear picking and conveying operations, which leads to reduced operating efficiency and yield loss.

[0004] To achieve the above objectives, the present invention provides the following technical solution: an anti-clogging header for a corn harvester, comprising a mounting frame, a discharge port on the outer surface of one end of the mounting frame, and a rotating guide rod installed inside the mounting frame. Both ends of the guide rod penetrate the outer surface of the mounting frame, and a drive gear is fixedly connected to the end of the guide rod outside the mounting frame. A driven gear is mounted on the outer surface of one side of the mounting frame where the drive gear is located, and the driven gear is connected to the drive gear via a linkage chain. A protective shell is fixedly installed at one end of the mounting frame, and the driven gear... One end of the rotating shaft passes through the inner surface of the mounting frame, and a central gear is fixedly connected to one end of the driven gear rotating shaft located on the inner surface of the mounting frame. A rotating stripping gear and a feeding gear are installed inside the lower end of the mounting frame, and a feeding sprocket is fixedly connected to the upper end of the rotating shaft of the feeding gear. Adjacent feeding gears are connected by a linkage belt. A sliding support rod is installed on the outer surface of the mounting frame on one side of the feeding sprocket, and a rotating dynamic gear is installed at one end of the support rod. The dynamic gear is connected to the feeding sprocket by a transmission chain belt, and a feeding plate is fixedly provided on the outer surface of the transmission chain belt. One end of the shaft of the unloading gear is fixedly connected to one end of the feeding rod, and a rotating clamping plate is installed on the outer surface of the feeding rod. The other end of the feeding rod is fixedly connected to a first guide head, and a sliding second guide head is installed on one end of the first guide head. A piston plate is fixedly connected to the end of the second guide head located inside the first guide head. A pressure relief groove is opened at the end of the first guide head connected to the feeding rod, and a support plate is provided at the end of the first guide head connected to the feeding rod. A piston rod is fixedly provided at one end of the support plate. A pressure chamber is opened inside the first guide head, and a connecting groove is opened on the inner surface of the pressure chamber. A screening frame is fixedly installed inside the mounting frame directly opposite the discharge port, and a temporary storage compartment is opened inside the mounting frame below the screening frame. One end of the temporary storage compartment penetrates the outer surface of the mounting frame. A stopper is engaged at the end of the temporary storage compartment that penetrates the outer surface of the mounting frame, and a sliding limit rod is installed at the end of the stopper outside the temporary storage compartment. One end of the limit rod is engaged with the mounting frame, and a spring connects the limit rod and the stopper.

[0005] Preferably, the central gear is meshed with the stripping gear, and the stripping gear is meshed with the feeding gear, and the two adjacent feeding gears are located on both sides of the central axis of the driven gear.

[0006] By employing the above technical solution, a highly efficient and synchronized power distribution system was constructed. Specifically, the driven gear, as the primary transmission, stably transmits the power obtained from the chain rake to the central gear. The central gear, acting as a crucial hub, simultaneously and coaxially transmits a single input power at the same speed and direction to the threshing gear and the stalk-pulling gear. This design ensures that the two important functional components below the header—the threshing component responsible for clearing debris and the stalk-pulling component responsible for agitating the stalks—can achieve precise coordinated action, avoiding material blockage or operational incoordination caused by asynchronous power, thereby guaranteeing the smoothness and stability of the harvesting process.

[0007] Preferably, a spring is connected between the support rod and the mounting bracket, and the support rod is located between the feed sprocket and the dynamic gear.

[0008] By adopting the above technical solution, automatic and dynamic adjustment of the transmission chain tension is achieved. During operation, the transmission chain will inevitably elongate slightly due to long-term operation, or become momentarily loose due to material impact or resistance changes. At this time, the spring in the spring support rod can automatically extend and retract according to the change of chain tension, continuously applying a constant and recoverable clamping force to the transmission chain. This adaptive tensioning mechanism can compensate for the looseness of the chain in real time, effectively preventing slippage and chain drop caused by excessively loose chain, ensuring the reliability and continuity of power transmission, and reducing the frequency of equipment maintenance.

[0009] Preferably, the feed plates are evenly distributed on the outer surface of the transmission chain, and the feed plates are designed in an arc shape.

[0010] By adopting the above technical solution, the special geometry of the material guide plate is fully utilized to optimize the material guiding performance. The material guide plate is designed as an arc-shaped thin plate structure. When it moves in a cycle with the transmission chain, the arc surface of its leading edge can smoothly cut into the accumulated stems, leaves and other materials. Compared with direct contact, the arc design significantly reduces the insertion resistance and can guide the material to flow along the arc surface during the guiding process, playing a guiding role similar to a "plow". This design effectively reduces the tangling, entanglement and accumulation of materials on the chain rake teeth and chain, improves the material passing efficiency and reduces the risk of blockage.

[0011] Preferably, the clamping plates are distributed at equal angles on the outer surface of the feeding rod, and the outer surface of the clamping plates is in contact with the outer surface of the support plate.

[0012] The above technical solution provides key mechanical limiting and support for the stable operation of the clamping plate. Under normal conditions, the inclined surface of the support plate fits against the inner side of the clamping plate, forming a fixed-angle "V" or funnel-shaped channel. This structure not only limits the maximum opening angle of the clamping plate and prevents it from flipping outward due to excessive force, but more importantly, it forms the initial gathering and guidance of the incoming material. The presence of the support plate ensures that the clamping plate maintains the preset and effective working form in the non-working state and clamping preparation stage, laying the structural foundation for subsequent clamping and release actions.

[0013] Preferably, both the first guide head and the second guide head are tapered, and the outer surfaces of both the first guide head and the second guide head are provided with spiral patterns.

[0014] The above technical solution significantly enhances the initiative and efficiency of the guide head in the material guiding process. The guide head adopts a sharp conical design at the front end, which can easily insert into and separate tangled stems, reducing forward resistance. The spiral raised texture on its outer surface is a key functional point. When the guide head rotates at high speed, these spiral textures are like the blades of a "thread" or "screw conveyor", which can generate a continuous axial traction force. It actively and orderly "screws" or "pulls" the grasped stems and other long materials into the internal channel along the conical surface, rather than passively impacting or pushing them away. This combination of rotation and spiral textures realizes high-speed and directional material introduction, improving the harvester head's adaptability to lodged or messy crops.

[0015] Preferably, the piston plate is located inside the pressure chamber, and the piston plate and the pressure chamber are connected by sliding friction, and one end of the pressure chamber is penetrated by a pressure relief groove.

[0016] By employing the above technical solution, mechanical motion is cleverly transformed into controllable fluid pressure changes, providing a power source for the release of clamping force. When it is necessary to release the clamped crop, external force pulls the second guide head and the piston plate connected to it to slide rapidly backward in the sealed pressure chamber. This action instantly increases the volume of the pressure chamber, thereby generating a local negative pressure in the chamber. This negative pressure is the initial "signal" and power reserve for triggering the subsequent opening action of the clamping plate. At the same time, the pressure relief grooves or small holes set on the piston plate or the chamber wall ensure that the back pressure side of the piston plate is connected to the outside atmosphere or low-pressure area during the movement of the piston plate, preventing the formation of air resistance and ensuring that the piston plate can be pulled easily and smoothly, making the generation of negative pressure rapid and effective.

[0017] Preferably, the connecting groove and the piston rod are connected by sliding friction, and a spring is connected between the piston rod and the connecting groove. The end of the support plate facing the clamping plate is designed as an isosceles trapezoid.

[0018] The above technical solution constitutes a complete mechanical-pneumatic linkage control loop. Under normal operating conditions, the spring force of the compression spring pushes the support plate outward through the piston rod, causing its inclined surface to press against the clamping plate, thus maintaining clamping. When a negative pressure is generated in the pressure chamber, this negative pressure is quickly transmitted to the space behind the piston rod through a small connecting groove. Under the action of pressure difference, the negative pressure overcomes the spring force, pulling the piston rod and the support plate back together. The retraction of the support plate directly removes the support for the clamping plate. The clamping plate then opens up under its own elasticity or the action of external crops, releasing the crops. The isosceles trapezoidal design of the support plate, with its two symmetrical inclined surfaces, ensures smooth contact with the inner wall of the clamping plate. Moreover, it has low frictional resistance during retraction and extension, and its action is sensitive and reliable. The entire system achieves precise and rapid response from changes in air pressure to mechanical action.

[0019] Compared with the prior art, the beneficial effects of the present invention are: the corn harvester uses an anti-clogging header: 1. Through a linkage transmission system consisting of a linkage gear chain, driven gear, central gear, stripping gear, feeding gear, dynamic gear, and transmission chain belt, power is efficiently transmitted from the guide rod to various functional components below the cutter. A spring support rod is installed between the feeding sprocket and the dynamic gear to apply dynamic tension to the transmission chain belt, effectively preventing the chain belt from slipping or loosening due to material entanglement or impact, thus ensuring the reliability of the transmission. The arc-shaped feeding plates evenly distributed on the transmission chain belt work in coordination with the meshing stripping gear and feeding gear to achieve orderly feeding, guiding, and crushing of the fed stems, leaves, and other materials, preventing them from accumulating and entangled in key parts, thereby significantly reducing the risk of cutter blockage and ensuring continuous and efficient operation. 2. The header is equipped with a screening frame and a temporary storage bin. During operation, corn kernels that fall off or scatter from the ears can be screened and separated by the screening frame and fall into the temporary storage bin below for temporary storage. The outlet of the temporary storage bin is closed by a detachable plug and a spring-loaded limiting rod. The structure is simple and reliable, and it is easy to open quickly at the appropriate time to collect the temporarily stored kernels. This realizes the online collection of recyclable products, effectively reduces yield loss caused by falling kernels, and improves the thoroughness of harvesting and economic benefits. 3. The end of the feeding rod driven by the ejector gear is designed with a composite flow guiding device with a retractable second guide head. Both the first and second guide heads are conical designs with spiral patterns, which facilitates material introduction. The internal piston plate, pressure chamber, piston rod and spring constitute a buffer and reset mechanism. When encountering thick stems or foreign objects stuck, simply pull the second guide head to generate negative pressure in the pressure chamber through the piston plate, thereby releasing the support plate from supporting the clamping plate and preventing the stems from being stuck and blocked, which would prevent the material from being blocked and blocked and thus preventing the material from being blocked and blocked, which would prevent the material from being blocked and blocked, thus preventing the material from being blocked and blocked, thus preventing the material from being blocked and blocked, thus preventing the material from being blocked and blocked, thus preventing the material from being blocked and blocked, thus preventing the material from being blocked and blocked, thus preventing the material from being blocked and blocked, thus preventing the material from being blocked and blocked, thus preventing the material from being blocked and blocked, thus preventing the material from being blocked and blocked, thus preventing the material from being blocked and blocked, thus preventing the material from being blocked and blocked, thus preventing the material from being blocked and blocked, thus preventing the material from being blocked and blocked, thus preventing the material from being blocked and blocked, but rather ... Attached Figure Description

[0020] Figure 1This is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 This is a three-dimensional structural diagram of the connection between the mounting frame, the discharge port, and the plug block of the present invention; Figure 3 This is a three-dimensional structural diagram of the connection between the mounting frame, the discharge port, and the guide rod of the present invention; Figure 4 This is a schematic diagram of the three-dimensional structure connecting the dynamic gear, transmission chain, and feed plate of the present invention. Figure 5 This is a three-dimensional structural diagram of the connection cross-section of the temporary storage compartment, plug, and limiting rod of the present invention; Figure 6 This is a three-dimensional structural diagram of the connection between the feeding rod, the clamping plate, and the first guide head of the present invention; Figure 7 This is a three-dimensional structural diagram of the connection between the feeding rod, clamping plate, and support plate of the present invention; Figure 8 This is a three-dimensional structural diagram of the connection between the second guide head, piston plate, and pressure chamber of the present invention. Figure 9 This is a schematic diagram of the three-dimensional structure connecting the driven gear, the central gear, and the stripping gear of the present invention; Figure 10 This is a schematic diagram of the three-dimensional structure of the material stripping gear, the material feeding gear, and the linkage belt connection of the present invention.

[0021] In the diagram: 1. Mounting frame; 2. Discharge port; 3. Guide rod; 4. Drive gear; 5. Driven gear; 6. Linkage chain; 7. Protective shell; 8. Center gear; 9. Unloading gear; 10. Feeding gear; 11. Feeding sprocket; 12. Linkage belt; 13. Support rod; 14. Dynamic gear; 15. Transmission chain; 16. Feeding plate; 17. Feeding rod; 18. Clamping plate; 19. First guide head; 20. Second guide head; 21. Piston plate; 22. Pressure relief groove; 23. Support plate; 24. Piston rod; 25. Pressure chamber; 26. Connecting groove; 27. Screening frame; 28. Temporary storage bin; 29. ​​Plug; 30. Limiting rod. Detailed Implementation

[0022] 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, and 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.

[0023] Please see Figures 1-10 The present invention provides a technical solution: an anti-clogging header for a corn harvester.

[0024] Example 1: This example discloses a mounting frame 1. A discharge port 2 is provided on the outer surface of one end of the mounting frame 1. A rotating guide rod 3 is installed inside the mounting frame 1, with both ends of the guide rod 3 penetrating the outer surface of the mounting frame 1. A drive gear 4 is fixedly connected to the end of the guide rod 3 outside the mounting frame 1. A rotating driven gear 5 is installed on the outer surface of the mounting frame 1 on one side where the drive gear 4 is located. The driven gear 5 is connected to the drive gear 4 via a linkage chain 6. A protective shell 7 is fixedly installed on one end of the mounting frame 1. One end of the shaft of the driven gear 5 penetrates the inner surface of the mounting frame 1. A central gear 8 is fixedly connected to one end of the rotating shaft located on the inner surface of the mounting frame 1. A rotating stripping gear 9 and a feeding gear 10 are installed inside the lower end of the mounting frame 1. A feeding sprocket 11 is fixedly connected to the upper end of the rotating shaft of the feeding gear 10. Adjacent feeding gears 10 are connected by a linkage belt 12. A sliding support rod 13 is installed on the outer surface of the mounting frame 1 on one side of the feeding sprocket 11. A rotating dynamic gear 14 is installed at one end of the support rod 13. The dynamic gear 14 is connected to the feeding sprocket 11 by a transmission chain belt 15. A feeding plate 16 is fixedly provided on the outer surface of the transmission chain belt 15. The center gear 8 is meshed with the stripper gear 9, and the stripper gear 9 is meshed with the feed gear 10. The two adjacent feed gears 10 are located on both sides of the central axis of the driven gear 5. A spring connects the support rod 13 to the mounting bracket 1, and the support rod 13 is located between the feed sprocket 11 and the dynamic gear 14; Power input and diversion: External power drives the guide rod 3 to rotate, which in turn drives the drive gear 4 at one end to rotate. The drive gear 4 transmits power to the driven gear 5 through the linkage chain 6. The shaft of the driven gear 5 drives the central gear 8 inside it to rotate. Gear meshing transmission: The center gear 8 meshes with the stripping gear 9, and the stripping gear 9 meshes with the feeding gear 10. Two adjacent feeding gears 10 are connected by a linkage belt 12 to ensure synchronous movement, which constitutes the core feeding and guiding power source under the cutting table. Dynamic tensioning material feeding: Each feeding gear 10 has a feeding sprocket 11 fixed on the upper part of its rotating shaft. The feeding sprocket 11 is connected to a movable dynamic gear 14 through a transmission chain belt 15. The dynamic gear 14 is mounted on a sliding support rod 13. The support rod 13 is connected to the mounting frame 1 by a spring. The spring always applies a pushing force to the support rod 13, so that the dynamic gear 14 generates a continuous dynamic tension force on the transmission chain belt 15, which effectively prevents the chain belt from loosening or slipping due to material impact or entanglement. Material guiding: The arc-shaped material guide plates 16, which are fixed at equal intervals on the outside of the transmission chain belt 15, continuously and orderly guide, comb, and push the fed stems, buds, and other materials forward as the chain belt rotates. The teeth of the meshing transmission descrambling gear 9 and the material guide gear 10 also participate in the crushing and guiding of the materials. The protective shell 7 provides protection for the outer transmission components. This collaborative working mode can effectively break up material clumps, prevent them from accumulating in local areas, and significantly reduce the risk of blockage.

[0025] Example 2: This example is based on Example 1: One end of the rotating shaft of the stripping gear 9 is fixedly connected to one end of the feeding rod 17, and a rotating clamping plate 18 is installed on the outer surface of the feeding rod 17. The other end of the feeding rod 17 is fixedly connected to a first guide head 19, and a sliding second guide head 20 is installed on one end of the first guide head 19. A piston plate 21 is fixedly connected to one end of the second guide head 20 located inside the first guide head 19. A pressure relief groove 22 is opened at one end of the first guide head 19 connected to the feeding rod 17. A support plate 23 is provided at one end of the first guide head 19 connected to the feeding rod 17. A piston rod 24 is fixedly provided at one end of the support plate 23. A pressure chamber 25 is opened inside the first guide head 19, and a connecting groove 26 is opened on the inner surface of the pressure chamber 25. The feed plates 16 are evenly distributed on the outer surface of the transmission chain belt 15, and the feed plates 16 are arc-shaped plate designs. Clamping plates 18 are distributed at equal angles on the outer surface of the feeding rod 17, and the outer surface of the clamping plates 18 is in contact with the outer surface of the support plate 23. Both the first guide head 19 and the second guide head 20 are tapered, and the outer surfaces of both the first guide head 19 and the second guide head 20 are provided with spiral patterns. The piston plate 21 is located inside the pressure chamber 25, and the piston plate 21 and the pressure chamber 25 are connected by sliding friction, and one end of the pressure chamber 25 is penetrated by the pressure relief groove 22; The connecting groove 26 and the piston rod 24 are connected by sliding friction, and a spring is connected between the piston rod 24 and the connecting groove 26. The end of the support plate 23 facing the clamping plate 18 is designed as an isosceles trapezoid. Driven by the flow guiding device: One end of the rotating shaft of the unloading gear 9 is fixedly connected to the feeding rod 17, which drives it to rotate. The end of the feeding rod 17 is fixed with a tapered first guide head 19 with spiral patterns. A tapered second guide head 20 with spiral patterns is slidably sleeved inside the first guide head 19. The spiral pattern is conducive to guiding the material. One end of the second guide head 20 that extends into the first guide head 19 is fixed with a piston plate 21. The piston plate 21 is located in the pressure chamber 25 opened inside the first guide head 19. Normal clamping and support: Rotatable clamping plates 18 are installed at equal angles on the feeding rod 17. A support plate 23 is provided at the connection between the first guide head 19 and the feeding rod 17. The end of the support plate facing the clamping plate 18 is designed as an isosceles trapezoid. Under normal conditions, under the action of the spring, the piston rod 24 pushes the support plate 23 to extend outward. Its trapezoidal inclined surface presses against the inner side of the clamping plate 18, so that multiple clamping plates 18 are in an open state, forming a funnel mouth, which is used to close and guide the stem. The jamming release mechanism: When a thick stem or foreign object gets stuck between the two clamping plates 18, the operator can pull the second guide head 20 outward. The second guide head 20 drives the piston plate 21 to slide inward in the pressure chamber 25, generating a negative pressure in the pressure chamber 25. This negative pressure acts on the end of the piston rod 24 through the connecting groove 26, overcoming the spring force and pulling the piston rod 24 inward. The retraction of the piston rod 24 drives the support plate 23 to retract, thereby removing the support for the clamping plate 18. The clamping plate 18, which has lost its support, can rotate freely inward to release the jammed material. The pressure relief groove 22 is used to balance the pressure and ensure that the piston plate 21 can slide smoothly. After cleaning, the second guide head 20 is released, and all components are reset under the action of the spring.

[0026] Example 3: This example discloses the following based on Examples 1 and 2: A screening frame 27 is fixedly installed inside the mounting frame 1 directly opposite the discharge port 2, and a temporary storage chamber 28 is opened inside the mounting frame 1 below the screening frame 27. One end of the temporary storage chamber 28 penetrates the outer surface of the mounting frame 1, and a stopper 29 is engaged at the end of the temporary storage chamber 28 that penetrates the outer surface of the mounting frame 1. A sliding limiting rod 30 is installed at the end of the stopper 29 located outside the temporary storage chamber 28, and one end of the limiting rod 30 is engaged with the mounting frame 1. A spring connects the limiting rod 30 and the stopper 29. Screening and collection: Inside the header, a screening frame 27 is fixedly installed at the position directly opposite the discharge port 2. During the harvesting operation, the mixture of harvested corn ears, fallen kernels, broken stalks and husks will pass through here. The mesh size of the screening frame 27 allows smaller corn kernels to pass through, while intercepting larger ears and impurities and guiding them to the discharge port 2 into the subsequent conveying channel. Temporary storage: The corn kernels separated by the screening frame 27 fall directly into the temporary storage chamber 28 specially opened inside the mounting frame 1 below it under the action of gravity. The temporary storage chamber 28 is a closed container that continuously collects and temporarily stores these recyclable kernels during the operation, realizing the "online collection" of scattered products. Centralized Recycling: The outlet of the temporary storage bin 28 is sealed by a detachable plug 29. The plug 29 is engaged and fixed to the mounting frame 1 by a spring-loaded limiting rod 30. The structure is simple and reliable. When the kernels in the temporary storage bin 28 accumulate to a certain amount, the operator only needs to operate the limiting rod 30 to release the engagement, pull out the plug 29, open the outlet, and quickly recycle the centrally stored corn kernels, emptying the temporary storage bin 28 for continued operation. This design effectively reduces yield loss caused by kernel drop and improves economic efficiency.

[0027] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A corn harvester anti-clogging header, comprising a mounting frame (1), wherein a discharge port (2) is provided on the outer surface of one end of the mounting frame (1), and a rotating guide rod (3) is installed inside the mounting frame (1), characterized in that: Both ends of the guide rod (3) penetrate the outer surface of the mounting frame (1), and the end of the guide rod (3) located outside the mounting frame (1) is fixedly connected to a drive gear (4). A rotating driven gear (5) is installed on the outer surface of one side of the mounting frame (1) where the drive gear (4) is located, and the driven gear (5) is connected to the drive gear (4) through a linkage chain (6). A protective shell (7) is fixedly installed on one end of the mounting frame (1), and one end of the shaft of the driven gear (5) penetrates the inner surface of the mounting frame (1), and a central gear (8) is fixedly connected to the end of the shaft of the driven gear (5) located on the inner surface of the mounting frame (1). The lower end of the mounting frame (1) is equipped with a rotating stripping gear (9) and a feeding gear (10). The upper end of the rotating shaft of the feeding gear (10) is fixedly connected to a feeding sprocket (11). Adjacent feeding gears (10) are connected by a linkage belt (12). A sliding support rod (13) is installed on the outer surface of the mounting frame (1) on one side of the feeding sprocket (11). A rotating dynamic gear (14) is installed at one end of the support rod (13). The dynamic gear (14) is connected to the feeding sprocket (11) through a transmission chain belt (15). A feeding plate (16) is fixedly provided on the outer surface of the transmission chain belt (15). One end of the shaft of the unloading gear (9) is fixedly connected to one end of the feeding rod (17), and a rotating clamping plate (18) is installed on the outer surface of the feeding rod (17). The other end of the feeding rod (17) is fixedly connected to a first guide head (19), and a sliding second guide head (20) is installed on one end of the first guide head (19). The end of the second guide head (20) located inside the first guide head (19) is fixedly connected to a piston plate (21). (19) A pressure relief groove (22) is provided at one end connected to the feeding rod (17), and a support plate (23) is provided at one end connected to the feeding rod (17), and a piston rod (24) is fixedly provided at one end of the support plate (23). A pressure chamber (25) is provided inside the first feeding head (19), and a connecting groove (26) is provided on the inner surface of the pressure chamber (25). A spring is connected between the piston rod (24) and the connecting groove (26).

2. The anti-clogging header for a corn harvester according to claim 1, characterized in that: A screening frame (27) is fixedly installed inside the mounting frame (1) directly opposite the discharge port (2), and a temporary storage chamber (28) is opened inside the mounting frame (1) below the screening frame (27). One end of the temporary storage chamber (28) penetrates the outer surface of the mounting frame (1). A plug (29) is engaged at one end of the temporary storage chamber (28) penetrating the outer surface of the mounting frame (1). A sliding limit rod (30) is installed at one end of the plug (29) outside the temporary storage chamber (28), and one end of the limit rod (30) is engaged with the mounting frame (1). A spring is connected between the limit rod (30) and the plug (29).

3. The anti-clogging header for a corn harvester according to claim 1, characterized in that: The central gear (8) is meshed with the stripping gear (9), and the stripping gear (9) is meshed with the feeding gear (10). The two adjacent feeding gears (10) are located on both sides of the central axis of the driven gear (5).

4. The anti-clogging header for a corn harvester according to claim 1, characterized in that: A spring is connected between the support rod (13) and the mounting bracket (1), and the support rod (13) is located between the feed sprocket (11) and the dynamic gear (14).

5. The anti-clogging header for a corn harvester according to claim 1, characterized in that: The material guide plates (16) are evenly distributed on the outer surface of the transmission chain belt (15), and the material guide plates (16) are designed in an arc shape.

6. The anti-clogging header for a corn harvester according to claim 1, characterized in that: The clamping plates (18) are distributed at equal angles on the outer surface of the feeding rod (17), and the outer surface of the clamping plates (18) is in contact with the outer surface of the support plate (23).

7. The anti-clogging header for a corn harvester according to claim 1, characterized in that: Both the first guide head (19) and the second guide head (20) are tapered, and the outer surfaces of both the first guide head (19) and the second guide head (20) are provided with spiral patterns.

8. The anti-clogging header for a corn harvester according to claim 1, characterized in that: The piston plate (21) is located inside the pressure chamber (25), and the piston plate (21) and the pressure chamber (25) are connected by sliding friction, and one end of the pressure chamber (25) is penetrated by the pressure relief groove (22).

9. The anti-clogging header for a corn harvester according to claim 1, characterized in that: The connecting groove (26) and the piston rod (24) are connected by sliding friction, and the end of the support plate (23) facing the clamping plate (18) is designed as an isosceles trapezoid.

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