Spiral arc plate missing pull type cotton rod pulling device

Abstract

The application provides a spiral arc plate missing pulling type cotton stalk pulling device, and relates to the field of agricultural machinery, which comprises a rack, an arc plate rolling roller assembly and a counter roller shaft; the arc plate rolling roller assembly comprises a rolling roller and arc plates; the rolling roller is rotationally connected to the rack, a plurality of arc plates are fixed to the rolling roller through connecting plates, and the plurality of arc plates are arranged in a spiral shape along the length direction of the rolling roller; the counter roller shaft is located below the arc plate rolling roller assembly, the counter roller shaft is rotationally connected to the rack, and the counter roller shaft has a pulling holding gap between the surface of the cylinder and the arc plates when the counter roller shaft and the arc plates rotate; the cotton stalk is finally pulled out under the rotation driving force of the arc plates and the clamping force of the counter roller shaft, the pulling force of the counter roller shaft and the rolling roller on the cotton stalk is ensured to be always in a safe interval, the cotton stalk is not broken or the root stub is not left, and the damage rate of the cotton stalk is reduced.

Description

Technical Field

[0001] This invention relates to the field of agricultural machinery, specifically to a spiral arc plate cotton stalk removal device. Background Technology

[0002] Xinjiang is a core cotton-producing area in China. After cotton harvesting, cotton stalks are a major agricultural residue, and their efficient resource utilization is crucial for the sustainable development of the industry. Currently, there are significant bottlenecks in cotton stalk treatment. The main method of cotton stalk treatment in China is direct crushing and returning to the field. However, the root stubble left in the field does not decompose easily in the soil, and cotton roots often harbor a large number of pathogens. This not only affects the quality of operations such as residual film recycling and sowing and mulching, but also greatly increases the incidence of pests and diseases in cotton fields. Therefore, cotton stalks must be removed by the roots.

[0003] Traditional cutting-type mechanical operations result in 30%-50% cotton stalk root residue, affecting not only residual film recycling and sowing quality but also causing soil structure damage and disease spread, leading to resource waste and soil degradation. In typical cotton fields in Xinjiang, cotton stalk pull-out resistance is approximately 40-60 kg / stalk, and even exceeds 100 kg / stalk. Mechanical pulling easily leads to stalk breakage, with damage rates as high as 15%-30%, further increasing the difficulty of mechanical pulling and the root breakage rate, exacerbating ecological problems. Manual pulling is inefficient, labor-intensive, and easily damages cotton stalks. Existing mechanical pulling equipment generally suffers from drawbacks such as complex structure, incomplete removal, high stalk damage rate, and poor adaptability, making it difficult to meet actual needs. Summary of the Invention

[0004] The purpose of this invention is to provide a spiral arc plate cotton stalk removal device to solve the problems of existing mechanical removal devices, such as complex structure, incomplete removal, high cotton stalk damage rate, and poor adaptability, which make it difficult to meet actual needs.

[0005] Based on the above objectives, this application provides a spiral arc plate missing cotton stalk removal device, including a frame, an arc plate roller assembly, and a pair of roller shafts;

[0006] The arc plate roller assembly includes a roller and an arc plate; the roller is rotatably connected to the frame, and multiple arc plates are fixed to the roller by connecting plates. Furthermore, the multiple arc plates are arranged in a spiral shape along the length of the roller, and the surface of the arc plates is covered with a flexible wear-resistant layer.

[0007] The roller shaft is located below the arc plate winding roller assembly. The roller shaft is rotatably connected to the frame. There is a pulling gap d0 between the roller shaft and the cylindrical surface formed when the arc plate rotates, which is used to clamp the cotton stalk.

[0008] Pull-out gap This is used to ensure that the pulling force of the roller shaft and the arc plate on the cotton stalk is always within a safe range that can completely pull out the roots without breaking the stalk.

[0009] in, The optimal clearance coefficient; This represents the average mid-section diameter of cotton stalks in the cotton field.

[0010] Furthermore, the optimal gap coefficient It is obtained through the following formula:

[0011] ;

[0012] Among them, among them, The angle between the tangent of the spiral line of the curved plate and the perpendicular line to the axis of the roller shaft. The angle between the cotton stalk and the vertical direction when the stalk enters the pulling gap. To achieve the optimal pulling force while maintaining a safety margin between high pull-out rate and low stalk breakage rate, μ represents the static friction coefficient between the flexible wear-resistant layer on the curved plate surface and the cotton stalk epidermis. The dimensionless rolling friction resistance coefficient, k, is the anti-slip rubber layer applied to the surfaces of the cotton stalk and the roller shaft. It characterizes the rolling friction resistance between the cotton stalk and the rotating roller shaft when the stalk is clamped. N The positive pressure coefficient of the equipment is a fixed value, that is, the positive pressure exerted on the cotton stalk by the arc plate and the roller shaft together. This represents the average mid-section diameter of cotton stalks in the cotton field.

[0013] Furthermore, the optimal extraction force with safety margin The optimal force range, which lies between the critical force for uprooting a cotton stalk and the ultimate force for stalk breakage, is obtained through the following formula: ;

[0014] Among them, among them, The critical pull-out resistance of cotton stalks refers to the minimum force required to pull cotton stalks, along with their intact root system, out of the soil. This value is determined by sampling and testing cotton stalks in the target cotton field, combined with multivariate nonlinear fitting of parameters such as the diameter of the middle section of the cotton stalk, soil compaction, and root burial depth. The ultimate breaking force of cotton stalk refers to the maximum bearing capacity of cotton stalk without breaking under tension. This value is determined by multivariate nonlinear fitting of parameters such as the diameter of the middle section of cotton stalk and the moisture content of cotton stalk at harvest time. This is the safety margin factor, with a value ranging from 0.3 to 0.8.

[0015] Furthermore, when the roller drives the arc-shaped plate to rotate, the spiral lead S of the arc-shaped plate used to match the row spacing of cotton planting is obtained by the following formula:

[0016] ;

[0017] in, The planting row spacing for cotton plants in the target cotton field. This is the row spacing matching coefficient, with a value of 1.0-1.2, which should be adjusted according to the height of the cotton stalks and the lodging situation.

[0018] Furthermore, the number Z of the arc-shaped plates installed is obtained by the following formula:

[0019] ;

[0020] Let the outer diameter of the arc plate's rotation trajectory be denoted as . The maximum spacing between cotton plants in the target cotton field.

[0021] Furthermore, it also includes a power transmission mechanism, which is mounted on the support plate of the frame. The power transmission mechanism includes a gear steering box, a coupling, a drive shaft, and a gear transmission assembly. The input end of the gear steering box is used to connect to the power output shaft of the agricultural machinery. The two drive shafts are respectively connected to the output end of the gear steering box through couplings. The drive shafts are connected to the rollers through the gear transmission assembly.

[0022] Furthermore, the drive shaft is mounted on the support plate of the frame via a first bearing housing.

[0023] Furthermore, the roller includes multiple roller connection units, with flanges provided at both ends of each roller connection unit. The multiple roller connection units are connected in sequence via flanges and bolts, and the arc plate is fixed to the flange via connecting plates and bolts.

[0024] Furthermore, the two ends of the roller shaft are rotatably connected to the second bearing housing, which is connected to the inclined supports on both sides of the frame by bolts. The inclined supports are provided with multiple assembly holes for connecting bolts along their length.

[0025] Furthermore, it also includes a traction device, which comprises a traction frame body and a traction connecting plate. The traction frame body is fixed to the front side of the frame, and the traction connecting plate is fixed to the traction frame body.

[0026] By adopting the above technical solution, the spiral arc plate-type cotton stalk removal device provided in this application has the following technical advantages compared with the prior art:

[0027] In this solution, the arc plate roller assembly includes a roller and an arc plate. The roller is rotatably connected to the frame, and multiple arc plates are fixed to the roller via connecting plates. Furthermore, the multiple arc plates are arranged in a spiral shape along the length of the roller. The roller shaft is located below the arc plate roller assembly and is rotatably connected to the frame. When the roller shaft and the arc plate rotate, there is a pulling gap between the cylindrical surfaces for clamping the cotton stalks. The cotton stalks are subjected to the rotational pulling force of the arc plate and the clamping force of the roller shaft, and are eventually pulled out. This ensures that the pulling force of the roller shaft and the roller on the cotton stalks is always within a safe range, preventing stalk breakage or root residue, thus reducing the cotton stalk damage rate. Attached Figure Description

[0028] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0029] Figure 1 This is a first-view structural schematic diagram of the spiral arc plate missing cotton stalk removal device provided in the embodiments of this application;

[0030] Figure 2 This is a second-view structural schematic diagram of the spiral arc plate notched cotton stalk removal device provided in the embodiments of this application;

[0031] Figure 3 This is a schematic diagram of the arc plate roller assembly provided in the embodiments of this application.

[0032] Icons: 100-Frame; 110-Diagonal support; 120-Traction frame body; 130-Traction connecting piece; 200-Arc plate roll assembly; 210-Roller; 211-Roll connecting unit; 212-Flange; 220-Arc plate; 221-Connecting plate; 300-Double roller shaft; 310-Second bearing seat; 400-Power transmission mechanism; 410-Board steering; 420-Drive shaft; 430-Gear transmission assembly; 440-First bearing seat. Detailed Implementation

[0033] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. 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.

[0034] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0035] This application provides a spiral arc plate cotton stalk removal device, which aims to integrate the core functional component, the arc plate roller assembly, in a modular structural design that allows for detachable and replaceable layout. This design not only facilitates rapid maintenance and component replacement after field operations, but also allows for flexible adjustment of module configuration according to plant spacing, stalk diameter, and soil conditions in different cotton-growing areas. This effectively solves the problems commonly found in existing cotton stalk removal machinery, such as rigid structure, poor adaptability, incomplete removal, and easy breakage of cotton stalks, significantly improving operational efficiency and equipment lifespan.

[0036] like Figures 1-3 As shown, this application provides an agricultural machine for cotton stalk removal, specifically a cotton stalk removal device that employs an arc-shaped plate and a pair of rollers working in tandem. This device, through innovative structural design, aims to solve problems such as incomplete removal, easy breakage of cotton stalks, and poor operational adaptability in existing cotton stalk removal machinery. The technical solution of this application will be described in detail below with reference to specific embodiments.

[0037] The equipment structure provided in this application embodiment includes a frame 100, an arc plate roller assembly 200, and a pair of roller shafts 300. The frame 100, as the load-bearing foundation of the entire equipment, is typically made of welded metal profiles and has sufficient structural strength and stability for installing and supporting other working components.

[0038] The arc plate roller assembly 200 includes a roller 210 and multiple arc plates 220. The roller 210 is a cylindrical long shaft structure, rotatably mounted on the frame 100 via a bearing seat or other connection method, allowing it to rotate around its own axis under power drive. The multiple arc plates 220 are fixedly mounted on the outer circumferential surface of the roller 210 via connecting plates 221. These arc plates 220 are not arranged in a straight line along the axial direction of the roller 210, but rather along the length of the roller 210 according to a certain spiral trajectory, forming a spiral distribution. This spiral arrangement allows the arc plates 220 to contact the cotton stalk sequentially and continuously as the roller 210 rotates, thus producing a continuous and stable pulling action on the cotton stalk.

[0039] Regarding the arrangement of the roller shaft 300, it is located below the arc plate roller assembly 200 and is also rotatably connected to the frame 100 via bearings and other components. A specific distance is maintained between the roller shaft 300 and the outer cylindrical surface formed by the rotating arc plate 220; this distance is the pulling gap for clamping the cotton stalk. When the equipment moves forward, the cotton stalk is guided into this gap area and, under the action of the rotating arc plate 220 and the clamping action of the roller shaft 300, the two work together to ultimately pull the cotton stalk out of the soil.

[0040] Considering the differences in cotton stalk diameter in different cotton fields, this application embodiment parametrically designs the aforementioned pulling gap to ensure the effectiveness of the pulling operation and avoid damage to the cotton stalks. Specifically, the value d0 of the pulling gap is set to the average mid-section diameter of the cotton stalks in the cotton field. The correlation is expressed as follows: ;

[0041] in, The optimal gap coefficient is represented by this formula, which allows the pulling gap to be adjusted according to the actual thickness of the cotton stalks in different areas. This ensures that the pulling force applied to the cotton stalks by the roller shaft 300 and the winding roller 210 is always within a safe range that can effectively remove the cotton stalks without causing them to break or leave any stubble. This design significantly reduces the damage rate of the cotton stalks during the pulling process and improves the quality of the operation.

[0042] Furthermore, in order to achieve the above-mentioned optimal gap coefficient To ensure accurate determination, this application's embodiments introduce a method of mechanical analysis and parameter fitting.

[0043] Optimal gap coefficient It is calculated using the following formula:

[0044] ;

[0045] In this formula, α represents the helix angle of the arc plate 220, which is the angle between the tangent of the helix of the arc plate 220 and the perpendicular line to the axis of the roller 210. This angle affects the direction of the force applied by the arc plate 220 to the cotton stalk; β is the cotton stalk feeding angle, which refers to the angle between the cotton stalk entering the pulling gap and the vertical direction. The optimal pulling force is determined to balance the safety margin of pull-out rate and low stalk breakage rate; μ is the static friction coefficient between the flexible wear-resistant layer on the surface of the arc plate and the cotton stalk skin; f' is a dimensionless coefficient defined as the rolling friction resistance coefficient between the cotton stalk and the anti-slip rubber layer on the surface of the roller shaft 300, used to characterize the magnitude of the rolling friction resistance generated between the cotton stalk and the contact surface of the rotating roller shaft 300 during the clamping process; k NThe positive pressure coefficient of the equipment is the positive pressure exerted by the arc plate and the roller shaft on the cotton stalk. This represents the average mid-section diameter of cotton stalks in the cotton field. This formula comprehensively considers various factors such as the stress on the cotton stalks, frictional characteristics, and geometric angles, providing a basis for optimizing the setting of the pull-out gap.

[0046] In the above formula for calculating the optimal clearance coefficient, the optimal extraction force with safety margin is... This is a key parameter. Considering the critical pull-out resistance of cotton stalks from the soil and the ultimate fracture force of their own structure, the embodiments of this application further limit the... Method for determining the optimal extraction force with safety margin. The calculation formula is as follows:

[0047] ;

[0048] in, The critical pull-out resistance of a cotton stalk refers to the minimum force required to completely pull a cotton stalk, along with its roots, out of the soil. This critical pull-out resistance can be obtained by sampling and testing cotton stalks in a target cotton field, and then fitting the data with parameters such as the mid-section diameter of the cotton stalk, soil compaction, and the depth of the cotton roots. The ultimate breaking force of the cotton stalk refers to the maximum tensile force that the cotton stalk, due to its material and structure, can withstand under tensile stress. Once this force is exceeded, the cotton stalk will break. This ultimate breaking force can be obtained by fitting parameters such as the mid-section diameter of the cotton stalk and its moisture content. λ is a safety margin coefficient between 0 and 1, ranging from 0.3 to 0.8, used to measure the critical pull-out force. and ultimate fracture force A suitable intermediate value is selected as the optimal extraction force. In this way, This ensures that the applied pulling force can overcome the soil's binding effect on the roots while leaving sufficient margin to prevent the cotton stalks from breaking due to excessive pulling force.

[0049] Regarding the arrangement parameters of the arc-shaped plate 220, this application embodiment also provides corresponding design basis. To adapt to the usage requirements of different cotton fields, when the roller 210 drives the arc-shaped plate 220 to rotate, the spiral lead S formed by the arc-shaped plate 220 is determined by the formula... The settings are as follows: L represents the planting row spacing of the cotton plants in the target cotton field. m is the row spacing matching coefficient, typically ranging from 1.0 to 1.2. In practical applications, the value of m can be adaptively adjusted based on the specific growth conditions of the cotton stalks in the cotton field, such as plant height and the presence of lodging. This design allows the spiral conveying parameters of the equipment to match different planting row spacings, ensuring that the arc plate 220 can accurately and systematically act on each row of cotton stalks.

[0050] To ensure that the equipment can effectively grab each cotton stalk even when the spacing between cotton stalks is large, this application embodiment also proposes a design for the number of arc-shaped plates 220 to be installed.

[0051] The number z of curved plates 220 installed should meet the following requirements:

[0052] ;

[0053] In this formula, D represents the diameter of the circle traced by the outermost point of the arc plate 220 during its rotation. The maximum spacing between adjacent cotton plants in the target cotton field is defined as follows: By ensuring that there are enough arc-shaped plates 220, the interval between adjacent arc-shaped plates 220 in the direction of equipment travel is no greater than the maximum possible spacing between plants in the cotton field. This ensures that no matter how the cotton plants are distributed in the row, at least one arc-shaped plate 220 will move and hold them, thus avoiding the occurrence of "missed pulls".

[0054] To achieve the rotational drive of the aforementioned roller 210 and the counter-roller shaft 300, this embodiment of the application also includes a power transmission mechanism 400. This power transmission mechanism 400 is mounted on the support plate of the frame 100 and specifically comprises a gear steering box 410, a coupling, a drive shaft 420, and a gear transmission assembly 430. The input end of the gear steering box 410 is connected to the power output shaft of agricultural machinery such as a tractor, thereby introducing power into the device. The two drive shafts 420 are respectively connected to the two output ends of the gear steering box 410 via couplings, realizing the left and right splitting of power. The other end of each drive shaft 420 is connected to the end of the corresponding roller 210 via the gear transmission assembly 430, thereby smoothly transmitting power to the roller 210 to drive its rotation.

[0055] To ensure the stability of power transmission, the installation method of the drive shaft 420 in this embodiment is also optimized. Specifically, the drive shaft 420 is assembled through the first bearing housing 440 when passing through the support plate of the frame 100. The first bearing housing 440 is fixed to the support plate, and the drive shaft 420 is installed inside the first bearing housing 440. This provides reliable rotational support for the drive shaft 420, ensuring stable operation when subjected to large torques, and also reduces vibration and friction during operation.

[0056] Considering the potential maintenance and repair needs of the equipment under different operating environments, this application embodiment features a modular design for the structure of the roller 210. Specifically, the roller 210 can be composed of multiple roller connecting units 211. Each roller connecting unit 211 has a flange 212 at both ends, and adjacent roller connecting units 211 can be connected end-to-end via flanges 212 and connecting bolts to form a complete roller 210. Simultaneously, the aforementioned arc-shaped plate 220 is also fixed to these flanges 212 via connecting plates 221. This modular structure allows the length of the roller 210 to be adjusted according to actual needs, and when a roller unit or arc-shaped plate 220 is damaged, only the damaged part can be disassembled and replaced, without the need for complete scrapping, thus reducing maintenance costs and difficulty.

[0057] To further enhance the equipment's adaptability to different row spacings and ground conditions, this application embodiment incorporates an adjustable installation method for the roller shaft 300. Specifically, both ends of the roller shaft 300 are rotatably connected to the second bearing housing 310, which is then bolted to the inclined supports 110 provided on both sides of the frame 100. The inclined supports 110 have multiple mounting holes along their length for connecting bolts. By selecting different mounting holes to fix the second bearing housing 310, the installation position of the roller shaft 300 relative to the frame 100 can be adjusted, thereby fine-tuning the relative positional relationship between the roller shaft 300 and the arc plate roller assembly 200. This, in turn, adjusts the pulling gap d0 between the arc plate 220 and the roller shaft 300 for clamping cotton stalks, adapting to cotton stalks of different diameters or different operational requirements.

[0058] To facilitate easy connection of this equipment with traction machinery (such as tractors), this embodiment also includes a traction device. This traction device mainly comprises a traction frame body 120 and a traction connecting plate 130. The traction frame body 120 is fixedly mounted on the front side of the frame 100, serving as the main structure for connection with the traction machinery. The traction connecting plate 130 is fixed to the traction frame body 120 and typically has multiple connection holes for hinged connection with the tractor's suspension mechanism. Through this traction device, the equipment can be quickly and reliably connected to traction machinery, achieving mobility for field operations.

[0059] The working principle and operational effect of the spiral arc plate missing cotton stalk removal device provided in the embodiments of this application are described below.

[0060] Before the operation begins, the equipment is attached to the tractor using a traction device, and key parameters such as the pulling gap and the 220-degree lead of the arc plate are preset or adjusted according to the actual agronomic parameters of the cotton field (such as row spacing, plant spacing, average diameter of cotton stalks, etc.) with reference to the aforementioned formula.

[0061] During operation, the tractor's power take-off shaft drives the roller 210 to rotate via the power transmission mechanism 400, and the roller 210 drives the spirally arranged arc plate 220 to rotate together. As the tractor moves forward, the cotton stalk is guided into the holding gap between the arc plate 220 and the roller shaft 300.

[0062] At this point, the rotating arc-shaped plate 220, due to its spiral trajectory, applies a backward pushing force to the cotton stalk, pushing it towards the roller shaft 300. The roller shaft 300, driven by the friction of the cotton stalk, rotates accordingly, forming a clamping force with the arc-shaped plate 220. Since the pulling gap is calculated based on the cotton stalk diameter and the optimal pulling force, the clamping force is controlled within an ideal range. Under the continuous pushing action of the arc-shaped plate 220 and the clamping action of the roller shaft 300, the cotton stalk experiences a gradually increasing upward pulling force. When this pulling force exceeds the critical pull-out resistance of the cotton stalk in the soil but is far less than its ultimate breaking force, the cotton stalk, along with its roots, is completely pulled out of the soil and then thrown by the arc-shaped plate 220, completing the removal operation.

[0063] Throughout the process, the optimized holding gap and pulling force effectively prevented the cotton stalk from cracking due to excessive clamping or breaking due to excessive pulling force, while also preventing slippage or missed pulling due to excessively loose clamping.

[0064] Therefore, this equipment can achieve low-damage and high-efficiency removal of cotton stalks, solving the problems of incomplete removal and high stalk breakage rate of traditional mechanical removal. Furthermore, through its adjustable structural design, it has good adaptability to cotton fields with different agronomic conditions and growth status.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A spiral arc plate-type cotton stalk removal device, characterized in that, Includes frame, arc plate roll assembly and double roller shaft; The arc plate roller assembly includes a roller and an arc plate; the roller is rotatably connected to the frame, and multiple arc plates are fixed to the roller by connecting plates. Furthermore, the multiple arc plates are arranged in a spiral shape along the length of the roller, and the surface of the arc plates is covered with a flexible wear-resistant layer. The roller shaft is located below the arc plate winding roller assembly. The roller shaft is rotatably connected to the frame. There is a pulling gap d0 between the roller shaft and the cylindrical surface formed when the arc plate rotates, which is used to clamp the cotton stalk. Pull-out gap This is used to ensure that the pulling force of the roller shaft and the arc plate on the cotton stalk is always within a safe range that can completely pull out the roots without breaking the stalk. in, The optimal clearance coefficient; This represents the average mid-section diameter of cotton stalks in the cotton field.

2. The spiral arc plate notched cotton stalk removal device according to claim 1, characterized in that, Optimal gap coefficient It is obtained through the following formula: ； in, The angle between the tangent of the spiral line of the curved plate and the perpendicular line to the axis of the roller shaft. The angle between the cotton stalk and the vertical direction when the stalk enters the pulling gap. To achieve the optimal pulling force while maintaining a safety margin between high pull-out rate and low stalk breakage rate, μ represents the static friction coefficient between the flexible wear-resistant layer on the curved plate surface and the cotton stalk epidermis. The dimensionless rolling friction resistance coefficient, k, is the anti-slip rubber layer applied to the surfaces of the cotton stalk and the roller shaft. It characterizes the rolling friction resistance between the cotton stalk and the rotating roller shaft when the stalk is clamped. N The positive pressure coefficient of the equipment is a fixed value, that is, the positive pressure exerted on the cotton stalk by the arc plate and the roller shaft together. This represents the average mid-section diameter of cotton stalks in the cotton field.

3. The spiral arc plate notched cotton stalk removal device according to claim 2, characterized in that, Optimal extraction force with safety margin The optimal force range, which lies between the critical force for uprooting a cotton stalk and the ultimate force for stalk breakage, is obtained through the following formula: ； in, The critical pull-out strength of the cotton stalk; The ultimate breaking force of the cotton stalk; This is the safety margin factor, with a value ranging from 0.3 to 0.

8.

4. The spiral arc plate notched cotton stalk removal device according to claim 1, characterized in that, When the roller drives the arc plate to rotate, the spiral lead S of the arc plate, which is used to match the row spacing of cotton planting, is obtained by the following formula: ； in, The planting row spacing for cotton plants in the target cotton field. This is the row spacing matching coefficient, with a value of 1.0-1.2, which should be adjusted according to the height of the cotton stalks and the lodging situation.

5. The spiral arc plate notched cotton stalk removal device according to claim 1, characterized in that, The number Z of the arc-shaped plates installed is obtained by the following formula: ； Let the outer diameter of the arc plate's rotation trajectory be denoted as . The maximum spacing between cotton plants in the target cotton field.

6. The spiral arc plate notched cotton stalk removal device according to claim 1, characterized in that, It also includes a power transmission mechanism, which is mounted on the support plate of the frame; The power transmission mechanism includes a gear steering box, a coupling, a drive shaft, and a gear transmission assembly. The input end of the gear steering box is used to connect to the power output shaft of the agricultural machinery. The two drive shafts are respectively connected to the output end of the gear steering box through couplings. The drive shafts are connected to the rollers through the gear transmission assembly.

7. The spiral arc plate notched cotton stalk removal device according to claim 6, characterized in that, The drive shaft is mounted on the support plate of the frame via a first bearing housing.

8. The spiral arc plate notched cotton stalk removal device according to claim 1, characterized in that, The roller consists of multiple roller connection units. Flanges are provided at both ends of each roller connection unit. The multiple roller connection units are connected in sequence by flanges and bolts. The arc plate is fixed to the flange by connecting plates and bolts.

9. The spiral arc plate notched cotton stalk removal device according to claim 1, characterized in that, The two ends of the roller shaft are rotatably connected to the second bearing housing, which is connected to the inclined supports on both sides of the frame by bolts. Multiple assembly holes for connecting bolts are provided on the inclined supports along their length.

10. The spiral arc plate notched cotton stalk removal device according to claim 1, characterized in that, It also includes a traction device, which consists of a traction frame body and a traction connecting plate. The traction frame body is fixed to the front side of the frame, and the traction connecting plate is fixed to the traction frame body.

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