Tobacco furrowing device

CN224863398UActive Publication Date: 2026-10-20CHINA NATIONAL TOBACCO CORPORATION HUNAN PROVINCIAL CORPORATION +1
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Patent Information

Application Number
CN202522432411.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-11-17
Publication Date
2026-10-20
Estimated Expiration
2035-11-17

AI Technical Summary

Technical Problem

[0004]有鉴于此,本实用新型提供的一种烟草培土装置的分土导板结构,解决了土壤在导板内部流动时容易产生堆积和堵塞现象降低了培土作业的连续性和稳定性的技术问题

Benefits of technology

[0027]采用上述改进方案的有益效果为:在导板主体两侧边缘设置沿弧形轮廓延伸的加强筋条并通过折边方式形成一体化结构的设计,显著提高了导板主体的横向刚度和抗扭转能力,加强筋条的存在使导板主体在承受不均匀土壤载荷时不易发生变形,折边连接方式避免了焊接带来的热影响和应力集中问题提高了结构的可靠性,一体化结构还减少了零部件数量简化了制造工艺降低了生产成本,两侧加强筋条对称布置保证了导板主体受力的均衡性。

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Abstract

The utility model provides a kind of tobacco earthing device's earth separating guide plate structure, belong to earth separating guide plate structure technical field, this tobacco earthing device's earth separating guide plate structure is used to gather soil to tobacco plant root, including guide plate main body and be set on guide plate main body and guide rib plate, the guide plate main body is arc plate shape structure, the front end edge of the guide plate main body is provided with soil cutting blade part, the blade angle of the soil cutting blade part is acute angle, the guide rib plate is fixedly connected on the inner concave side surface of guide plate main body, the guide rib plate is along the arc profile of guide plate main body and extends arrangement, the top end edge between the guide rib plate and the front end edge of guide plate main body forms the gradually changing flow channel, the cross-sectional area of the flow channel gradually decreases along soil flow direction, solve the soil in guide plate inside flow and easily produce accumulation and jamming phenomenon reduce the continuity and stability of earthing operation technical problem.
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Description

Technical Field

[0001] This utility model belongs to the technical field of soil distribution guide plate structure, specifically, it relates to a soil distribution guide plate structure for a tobacco soil cultivation device. Background Technology

[0002] In tobacco ridge cultivation, hilling is a crucial step in determining the plant's resistance to lodging and the quality of root development. Current tobacco hilling machines generally adopt a "plowing or disc turning the soil first, followed by a soil-dividing guide plate" model: the machine moves along the furrow, the turning component throws the soil from the side of the row, and then the soil-dividing guide plate behind it divides the high-speed soil flow into a "soil-covering zone near the roots" and a "soil-falling zone away from the plants," which ensures that the ridges are full and prevents soil from crushing the seedlings.

[0003] However, existing soil-separating guide plates still use simple flat plates or single-curvature arc plates. The plate surface lacks gradually expanding and contracting guide channels, resulting in random scattering of soil after impact, leading to a "partial ridge" phenomenon where one side is saturated with soil while the other side is lacking soil. The front cutting edge is a right-angle cut, resulting in high resistance to soil entry and easy deformation upon encountering compacted layers. The equal-thickness plate lacks reinforcement on both sides, causing torsional elasticity under non-uniform impacts, instantly changing the soil-separating angle, leading to "ridge running" or even burying seedlings. The constant channel cross-section cannot regulate the kinetic energy of high-speed soil flow through "collection-dispersion," resulting in compacted ridge surfaces, reduced porosity, and directly affecting root respiration and hilling quality. These defects have become bottlenecks restricting the efficiency and stability of tobacco hilling machines, necessitating a new soil-separating guide plate structure that integrates soil separation, soil equalization, and seedling protection functions. Utility Model Content

[0004] In view of this, the soil guide plate structure of the tobacco soil-building device provided by this utility model solves the technical problem that soil is prone to accumulation and blockage when flowing inside the guide plate, which reduces the continuity and stability of the soil-building operation.

[0005] This utility model is implemented as follows:

[0006] This utility model provides a soil-separating guide plate structure for a tobacco soil-building device, wherein:

[0007] For gathering soil towards the roots of tobacco plants, the device includes a guide plate body and guide ribs disposed on the guide plate body. The guide plate body has an arc-shaped plate structure, and a soil-cutting blade is provided at the front edge of the guide plate body. The cutting edge angle of the soil-cutting blade is acute. The guide ribs are fixedly connected to the concave side surface of the guide plate body. The guide ribs extend along the arc-shaped contour of the guide plate body. A gradually decreasing flow channel is formed between the top edge of the guide ribs and the front edge of the guide plate body. The cross-sectional area of ​​the flow channel gradually decreases along the soil flow direction.

[0008] The technical effects of the soil-dividing guide plate structure of the tobacco hilling device provided by this utility model are as follows: By designing the main body of the guide plate as an arc-shaped plate structure and setting guide ribs extending along the arc contour on its concave side surface, the soil is guided by the arc surface and diverted by the guide ribs when passing through the main body of the guide plate. The gradually changing flow channel formed by the top edge of the guide ribs and the front edge of the main body of the guide plate can accurately control the direction of soil flow. The design of the cross-sectional area of ​​the flow channel gradually decreasing along the direction of soil flow makes the soil flow velocity gradually increase and produce a concentration effect. The sharp-angled soil-cutting blade set at the front end can effectively cut into the soil and reduce resistance. The overall structure realizes the effective collection and directional transportation of soil, improving the efficiency and accuracy of hilling operations.

[0009] Based on the above technical solution, the soil-separating guide plate structure of the tobacco soil-building device of this utility model can be further improved as follows:

[0010] The radius of curvature of the guide plate body gradually increases along the direction of soil flow, and the radius of curvature of the rear end of the guide plate body is greater than that of the front end.

[0011] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the design of the arc curvature radius of the guide plate body gradually increases along the direction of soil flow, so that the guiding effect on the soil when flowing through the guide plate body presents a gradual change. The larger curvature radius of the rear part can reduce the turning angle of the soil flow, reduce the frictional resistance and collision loss between the soil and the guide plate body, while the smaller curvature radius of the front part can quickly gather the soil that initially enters. This gradual curvature design makes the entire soil separation process more stable and smooth, avoiding the accumulation and blockage of soil inside the guide plate.

[0012] Furthermore, the thickness of the cutting edge gradually changes along the width direction of the guide plate body, and the thickness at the center of the cutting edge is less than the thickness at the two sides.

[0013] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the design of varying the thickness of the cutting edge along the width of the guide plate body allows the thinner edge in the center to cut into the soil with less resistance, while the thicker parts on both sides provide sufficient structural strength to withstand the lateral pressure of the soil. This thickness distribution allows the cutting edge to maintain both sharp cutting performance and good bending strength during operation. The thin-walled design in the center reduces cutting resistance and lowers power consumption, while the thickened parts on both sides prevent the cutting edge from deforming or breaking when encountering hard soil blocks.

[0014] Furthermore, the guide rib has a trapezoidal cross-sectional structure, and the width of the bottom edge of the guide rib near the main surface of the guide plate is greater than the width of the top edge away from the main surface of the guide plate.

[0015] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: The guide rib adopts a trapezoidal cross-section structure with the bottom width being greater than the top width, which forms a stable connection foundation between the guide rib and the main surface of the guide plate. The wider bottom provides a larger contact area and enhances the connection strength. The shape that gradually narrows upward reduces the resistance during soil flow. The trapezoidal cross-section also gives the guide rib good bending stiffness and can withstand soil impact loads. This cross-section form optimizes the soil flow path and improves the flow guidance efficiency while ensuring structural strength.

[0016] Furthermore, the angle between the side surface of the guide rib and the concave side surface of the guide plate body is an obtuse angle, and the angle range of the included angle causes the soil to generate a component force to the center of the guide plate body when sliding along the side surface of the guide rib.

[0017] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: The obtuse angle between the side of the guide rib and the concave side surface of the guide plate body causes the force direction of the soil to deflect when it slides along the side of the guide rib. The component force generated by the obtuse angle to the center of the guide plate body causes the soil to continuously gather towards the central area during the flow process. This lateral flow guidance effect enhances the soil concentration effect and makes the soil distribution more compact. At the same time, the obtuse angle design avoids the formation of eddies or stagnation of soil at the root of the guide rib, ensuring the continuity and stability of soil flow and improving the uniformity of the soil filling operation.

[0018] Furthermore, the rear end edge of the guide plate body is provided with a curled portion, which bends to the outward convex side of the guide plate body to form an arc-shaped edge, and the arc radius of the curled portion is smaller than the curvature radius of the main body of the guide plate body.

[0019] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: The rear edge of the guide plate body is provided with a curled part that bends outward. The arc-shaped edge formed by the curled part can guide the soil leaving the guide plate. The small arc radius makes the curled part have a significant guiding effect, guiding the soil to be discharged in the predetermined direction. The curled part can also prevent the rear edge of the guide plate from curling or deforming during use, enhancing the rigidity and durability of the rear structure. At the same time, the smooth arc-shaped edge reduces the resistance when the soil is discharged, avoiding the accumulation of soil at the rear position.

[0020] Furthermore, the height of the guide rib gradually decreases along the soil flow direction, and the height of the guide rib near the front end of the guide plate body is greater than the height near the rear end of the guide plate body.

[0021] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the design of the guide rib plate height gradually decreasing along the soil flow direction makes the soil flow space inside the guide plate gradually shrink. The higher guide rib plate at the front end can effectively intercept and guide the initially entering dispersed soil, while the gradually decreasing height at the rear end allows the soil to obtain a larger lateral expansion space when it approaches the outlet position. This height change, combined with the arc-shaped structure of the guide plate body, achieves precise control of the soil flow state, so that the soil can be fully gathered and smoothly discharged at the appropriate position.

[0022] Furthermore, a transition fillet is provided between the cutting blade and the main body of the guide plate, and the radius of the transition fillet allows for a smooth connection between the cutting blade and the main body of the guide plate.

[0023] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: The design of setting a transition rounded corner between the cutting edge and the main body of the guide plate eliminates the sharp structural turning point and avoids stress concentration. The transition rounded corner allows the load borne by the cutting edge to be smoothly transferred to the main body of the guide plate, which improves the fatigue resistance and service life of the overall structure. The smooth transition also reduces the turbulence and energy loss generated when the soil flows through this area, allowing the soil to enter the guiding area more smoothly from the cutting area. At the same time, the rounded corner design makes it easier to clean the soil residue attached to the structural turning point.

[0024] Furthermore, the guide plate body is made of metal sheet by stamping, and the guide rib is fixedly connected to the concave side surface of the guide plate body by welding.

[0025] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: The manufacturing process of using metal sheet stamping to form the main body of the guide plate and connecting the guide ribs by welding gives the overall structure good strength and rigidity. The metal material can withstand the impact and friction of the soil, ensuring the reliability of long-term use. The stamping process can accurately control the arc shape and size of the main body of the guide plate, ensuring product consistency. The welding connection method makes the guide ribs and the main body of the guide plate form a solid overall structure that will not loosen or fall off during use. The metal surface is also easy to be treated with anti-corrosion, extending the service life.

[0026] Furthermore, reinforcing ribs are provided on both sides of the guide plate body. The reinforcing ribs extend along the arc contour of the guide plate body and are connected to the guide plate body by folding to form an integrated structure.

[0027] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: The design of setting reinforcing ribs extending along the arc contour on both sides of the guide plate body and forming an integrated structure by folding the edges significantly improves the lateral stiffness and torsional resistance of the guide plate body. The presence of reinforcing ribs makes the guide plate body less prone to deformation when subjected to uneven soil loads. The folding connection method avoids the heat effects and stress concentration problems caused by welding, thus improving the reliability of the structure. The integrated structure also reduces the number of parts, simplifies the manufacturing process, and reduces production costs. The symmetrical arrangement of the reinforcing ribs on both sides ensures the balance of force on the guide plate body.

[0028] Compared with existing technologies, the beneficial effects of the soil guide plate structure of the tobacco hilling device provided by this utility model are as follows: This utility model designs the main body of the guide plate as an arc-shaped structure with a radius of curvature that gradually increases along the direction of soil flow, and sets a trapezoidal cross-section guide rib on its concave side surface, forming a gradual flow channel. This effectively solves the problem of insufficient soil collection and guiding capacity in existing technologies. The obtuse angle configuration between the guide rib and the main body of the guide plate allows the soil to continuously gather towards the center during the flow process. The thickness variation design of the acute-angle cutting edge at the front end provides sufficient structural strength while ensuring cutting ability. The gradual height design of the rear curled part and the guide rib allows the soil to be smoothly discharged and avoids accumulation. The integrated structure formed by the folding method of the reinforcing ribs on both sides significantly improves the deformation resistance of the guide plate. The overall solution achieves precise control of the soil flow path, improves the accuracy of hilling operations, and allows the soil to be tightly gathered at the roots of the tobacco plants. The rigidity and durability of the guide plate structure are enhanced, and the continuity and stability of soil flow are guaranteed. Compared with existing technologies, it has significantly improved in terms of hilling efficiency and equipment reliability. Attached Figure Description

[0029] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 An example diagram of a soil-distributing guide plate structure for a tobacco soil-building device;

[0031] Figure 2 A side view of the soil-spreading guide plate structure of a tobacco soil-piling device;

[0032] The attached diagram lists the components represented by each number as follows:

[0033] 10. Guide plate body; 11. Soil cutting blade; 12. Curved part; 20. Guide rib plate. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0035] like Figure 1 , Figure 2 The diagram shown is an example of the soil distribution guide plate structure of a tobacco soil-raising device provided by this utility model. The device, used to gather soil towards the roots of tobacco plants, includes a guide plate body 10 and guide ribs 20 disposed on the guide plate body 10. The guide plate body 10 has an arc-shaped plate structure. A soil-cutting blade 11 is provided at the front edge of the guide plate body 10, with an acute angle at the cutting edge. The guide ribs 20 are fixedly connected to the concave side surface of the guide plate body 10. The guide ribs 20 extend along the arc-shaped contour of the guide plate body 10, and a gradually decreasing flow channel is formed between the top edge of the guide ribs 20 and the front edge of the guide plate body 10. The cross-sectional area of ​​the flow channel gradually decreases along the soil flow direction.

[0036] The specific operation or use method is as follows: Install the soil-separating guide plate structure on the frame of the tobacco ridging device. The cutting edge of the front end of the guide plate body faces the direction of travel. Install a soil-separating guide plate structure on each side to make them symmetrically arranged. Adjust the installation angle of the guide plates so that the cutting edge forms an appropriate cutting angle with the ground. Start the ridging device and move it forward along the furrows in the tobacco field. During the forward movement, the plowshare or disc turns over the soil on both sides. The loose soil moves towards the soil-separating guide plate under the action of gravity and mechanical thrust. The soil first contacts the cutting edge at the front end of the guide plate body. The acute-angled cutting edge cuts into the soil layer and pushes the soil upward. After entering the concave side of the guide plate body, the soil is guided by the guide ribs. The soil slides along the side of the guide ribs and moves towards the center under the action of the obtuse angle. As the soil-building device continues to move forward, the soil is collected and guided by the guide plate and gathers at the roots of the tobacco plant. The soil is discharged under the guidance of the curled part at the rear end of the guide plate and piles up at the roots of the tobacco plant to form a soil mound. Throughout the operation, the soil-building device moves forward at a uniform speed to ensure the uniformity and continuity of soil building.

[0037] In the above technical solution, the radius of curvature of the guide plate body 10 gradually increases along the direction of soil flow, and the radius of curvature of the rear end part of the guide plate body 10 is greater than the radius of curvature of the front end part.

[0038] Furthermore, in the above technical solution, the thickness of the cutting blade 11 gradually changes along the width direction of the guide plate body 10, and the thickness of the cutting blade 11 at the center position is less than the thickness at the two sides.

[0039] Furthermore, in the above technical solution, the guide rib 20 has a trapezoidal cross-sectional structure, and the width of the bottom edge of the guide rib 20 near the surface of the guide plate body 10 is greater than the width of the top edge away from the surface of the guide plate body 10.

[0040] Furthermore, in the above technical solution, the angle between the side surface of the guide rib 20 and the concave side surface of the guide plate body 10 is an obtuse angle, and the angle range of the included angle causes the soil to generate a component force to the center of the guide plate body when sliding along the side surface of the guide rib.

[0041] Furthermore, in the above technical solution, the rear end edge of the guide plate body 10 is provided with a curled portion 12, which bends the outer convex side of the guide plate body to form an arc-shaped edge, and the arc radius of the curled portion 12 is smaller than the curvature radius of the main body of the guide plate body.

[0042] Furthermore, in the above technical solution, the height of the guide rib 20 gradually decreases along the soil flow direction, and the height of the guide rib near the front end of the guide plate body is greater than the height near the rear end of the guide plate body.

[0043] Furthermore, in the above technical solution, a transition fillet is provided between the cutting blade 11 and the main body of the guide plate body 10, and the radius of the transition fillet allows the cutting blade and the main body of the guide plate body to be smoothly connected.

[0044] Furthermore, in the above technical solution, the guide plate body 10 is made of metal sheet by stamping, and the guide rib is fixedly connected to the concave side surface of the guide plate body by welding.

[0045] Furthermore, in the above technical solution, reinforcing ribs are respectively provided on both sides of the guide plate body 10. The reinforcing ribs extend along the arc contour of the guide plate body and are connected to the guide plate body by a folding method to form an integrated structure.

[0046] Specific Embodiment 1: The soil guiding plate structure in this embodiment includes two main components: the guiding plate body and the guiding ribs. The guiding plate body is made of high-quality carbon structural steel plate with a thickness of 3 mm, processed by stamping. The guiding plate body has an arc-shaped plate structure with an overall length of 450 mm and a width of 280 mm. The arc design of the guiding plate body adopts a variable curvature method, with a curvature radius of 180 mm at the front end and 320 mm at the rear end. The curvature radius gradually changes linearly along the soil flow direction. The concave side of the guiding plate body forms a concave surface, and the convex side forms a convex surface. The front edge of the guiding plate body is processed to form a soil cutting blade. The soil cutting blade is sharpened by mechanical grinding. The cutting edge is machined into an acute angle shape with a cutting edge angle of 35 degrees. The thickness of the cutting edge varies along the width of the guide plate. The central position maintains the original plate thickness of 3 mm, while the two sides are locally thickened to 5 mm. The thickened parts are achieved through welding. The rear edge of the guide plate body is bent outward to form a curled section with a bending radius of 15 mm and a bending angle of 90 degrees. The curled section is evenly distributed along the width of the guide plate. The two sides of the guide plate body are processed with a folding process to form reinforcing ribs with a folding width of 20 mm and a folding angle of 90 degrees. The reinforcing ribs and the guide plate body form an integrated structure with an L-shaped cross-section. The guide ribs are made of 4 mm thick material. The carbon structural steel plate is formed by shearing and bending. The guide rib has a trapezoidal cross-section, with a bottom edge width of 35 mm near the main surface and a top edge width of 20 mm away from the main surface. The trapezoidal height is 45 mm, and the guide rib is 380 mm long, arranged along the arc contour of the main body of the guide plate. The guide rib is fixed to the concave side surface of the main body of the guide plate by argon arc welding. The weld is located at the contact position between the bottom edge of the guide rib and the surface of the main body of the guide plate. The side of the guide rib forms an obtuse angle of 115 degrees with the concave side surface of the main body of the guide plate. The height of the guide rib varies gradually along the soil flow direction. The guide rib is located near the front end of the main body of the guide plate. The plate height is 45 mm, gradually decreasing to 25 mm towards the rear. A flow channel is formed between the top edge of the guide rib and the cutting edge at the front of the guide plate body. The cross-sectional area of ​​the flow channel at the front is 85 square centimeters and the cross-sectional area at the rear is 50 square centimeters. The total weight of the entire soil-separating guide plate structure is approximately 2.8 kg. The surfaces of the guide plate body and the guide rib are treated with phosphate anti-rust treatment and then coated with epoxy resin anti-corrosion coating with a thickness of 80 micrometers. The assembled soil-separating guide plate structure is installed on the frame of the soil-laying device by bolt connection. The mounting holes are located in the middle of the reinforcing ribs on both sides of the guide plate body. The bolt specification is M10 and the bolt spacing is 180 mm.

[0047] Specific Embodiment 2: This Embodiment 2 is based on Embodiment 1, with improvements and optimizations to the structure of the guide rib. A wavy toothed structure is added to the top edge of the guide rib. The wavy toothed structure consists of multiple continuous peaks and troughs, with a single peak height of 8 mm, a trough depth of 6 mm, and a wavelength of 25 mm. Fifteen complete wave cycles are evenly distributed along the top edge of the entire guide rib. The wavy toothed structure is machined by milling after the guide rib is formed. The presence of the toothed structure causes periodic disturbance to the soil as it flows over the top of the guide rib. This disturbance can disrupt the boundary layer of soil flow and reduce frictional resistance. At the same time, the alternating convexities and depressions formed by the peaks and troughs have a lateral guiding effect on the soil, further enhancing the soil's convergence effect towards the center of the guide rib. The improved guide rib, while maintaining the original trapezoidal cross-section and obtuse angle configuration, enhances the control of soil flow through the top toothed structure, making the soil separation effect more significant.

[0048] Specifically, the principle of this utility model is as follows: The soil guide plate structure of this utility model achieves precise control of soil flow through the synergistic effect of multiple key design elements. First, the main body of the guide plate adopts an arc-shaped design with a radius of curvature that gradually increases along the direction of soil flow. This gradual curvature causes the soil to experience a strong initial converging effect when entering the guide plate. Subsequently, the turning angle gradually decreases during the flow process, reducing flow resistance. The guide ribs are set on the concave side surface of the main body of the guide plate and extend along the arc-shaped contour. The trapezoidal cross-sectional structure of the guide ribs ensures sufficient connection strength while reducing the obstruction to soil flow. The obtuse angle configuration between the side of the guide ribs and the surface of the main body of the guide plate is the key to achieving continuous soil convergence. When the soil slides along the side of the guide ribs, the force is decomposed, generating a distribution pointing towards the center of the guide plate. The lateral flow-guiding effect causes the dispersed soil to continuously converge towards the central area. The gradually decreasing flow channel formed by the top edge of the guide rib and the front edge of the guide plate restricts the soil flow spatially. The gradual reduction of the channel cross-sectional area increases the soil flow velocity and produces a concentration effect. The sharp angle design of the front cutting edge and the thin-walled structure in the center reduce the cutting resistance, while the thickened parts on both sides provide bending strength. The rear curled part provides the final guidance for the soil leaving the guide plate. The gradual height of the guide rib, combined with the curled part, allows the soil to obtain lateral expansion space at the appropriate position for smooth discharge. The integrated structure formed by the folded edges of the reinforcing ribs on both sides enhances the overall rigidity of the guide plate. These design elements work together to make the soil flow orderly along the preset path inside the guide plate, achieving a highly efficient and accurate soil separation effect.

Claims

1. A soil-guiding plate structure for a tobacco hilling device, used to gather soil towards the roots of tobacco plants, characterized in that: The device includes a guide plate body and guide ribs disposed on the guide plate body. The guide plate body has an arc-shaped plate structure. The front edge of the guide plate body is provided with a soil cutting blade with an acute angle. The guide ribs are fixedly connected to the concave side surface of the guide plate body. The guide ribs extend along the arc-shaped contour of the guide plate body. A gradually decreasing flow channel is formed between the top edge of the guide ribs and the front edge of the guide plate body. The cross-sectional area of ​​the flow channel gradually decreases along the soil flow direction.

2. The soil-separating guide plate structure of the tobacco soil-building device according to claim 1, characterized in that, The radius of curvature of the guide plate body gradually increases along the direction of soil flow, and the radius of curvature of the rear end of the guide plate body is greater than that of the front end.

3. The soil-separating guide plate structure of the tobacco soil-building device according to claim 2, characterized in that, The thickness of the cutting blade gradually changes along the width of the guide plate body, and the thickness at the center of the cutting blade is less than the thickness at the two sides.

4. The soil-separating guide plate structure of the tobacco soil-building device according to claim 3, characterized in that, The guide rib has a trapezoidal cross-section structure, and the width of the bottom edge of the guide rib near the main surface of the guide plate is greater than the width of the top edge away from the main surface of the guide plate.

5. The soil-separating guide plate structure of the tobacco soil-building device according to claim 4, characterized in that, The angle between the side of the guide rib and the concave side surface of the guide plate body is an obtuse angle. The angle range of the included angle causes the soil to generate a component force towards the center of the guide plate body when it slides along the side of the guide rib.

6. The soil-separating guide plate structure of the tobacco soil-building device according to claim 5, characterized in that, The rear edge of the guide plate body is provided with a curled part, which bends to the outward convex side of the guide plate body to form an arc-shaped edge. The arc radius of the curled part is smaller than the curvature radius of the main body of the guide plate body.

7. The soil-separating guide plate structure of the tobacco soil-building device according to claim 6, characterized in that, The height of the guide rib gradually decreases along the direction of soil flow, and the height of the guide rib near the front end of the guide plate body is greater than the height near the rear end of the guide plate body.

8. The soil-separating guide plate structure of the tobacco soil-building device according to claim 7, characterized in that, A transition fillet is provided between the cutting blade and the main body of the guide plate, and the radius of the transition fillet allows for a smooth connection between the cutting blade and the main body of the guide plate.

9. The soil-separating guide plate structure of a tobacco soil-building device according to claim 8, characterized in that, The guide plate body is made of metal sheet by stamping, and the guide ribs are fixedly connected to the concave side surface of the guide plate body by welding.

10. The soil-separating guide plate structure of a tobacco soil-building device according to claim 9, characterized in that, The guide plate body has reinforcing ribs on both sides of its main body. The reinforcing ribs extend along the arc-shaped contour of the guide plate body and are connected to the guide plate body by folding to form an integrated structure.