Radix pseudostellariae precision seeding multifunctional operation equipment and control method thereof

Abstract

The application discloses a kind of radix pseudoginseng precision seeding multifunctional operation equipment and control method thereof, belong to traditional Chinese medicinal material planting machinery technical field, including rack, the rack is sequentially integrated with flat mechanism, feed uniform seedling mechanism, precision seeding mechanism, ditching lifting mechanism and self-adaptive covering mechanism in the direction of operation progress, the discharge end of the feed uniform seedling mechanism is connected with the feed end of precision seeding mechanism, the ditching lifting mechanism is transmission connection with precision seeding mechanism, the rack is also provided with drive assembly for driving each mechanism cooperative operation.This application adopts compact overall frame design, can be flexibly adapted to the operation scene of hilly and mountainous small field, solves the industry pain point that large seeding machine cannot enter and steering difficulty, perfectly adapts to the topographic features of radix pseudoginseng main producing area.

Description

Technical Field

[0001] This invention relates to the field of machinery technology for planting Chinese medicinal herbs, specifically to a multi-functional equipment for precision sowing of Codonopsis pilosula and its control method. Background Technology

[0002] Codonopsis pilosula, a precious traditional Chinese medicine that is both food and medicine, possesses the traditional effects of invigorating qi and strengthening the spleen, promoting body fluids and moistening the lungs. In line with the development trend of the health industry, the market demand for high-quality Codonopsis pilosula remains strong. The yield and quality of Codonopsis pilosula highly depend on the meticulous management of the planting process. Sowing is the core link that determines the success of Codonopsis pilosula cultivation, directly affecting subsequent germination rate, growth uniformity, and final yield. Currently, Codonopsis pilosula sowing is still mainly done manually, and existing sowing machinery is mostly modified from general crop sowing equipment, which is difficult to adapt to the physiological characteristics and agronomical requirements of Codonopsis pilosula seedlings.

[0003] The existing technology has the following problems: 1. Existing equipment for sowing Codonopsis pilosula lacks a uniform material protection design for the feeding and conveying structure that is adapted to the characteristics of seedlings. This easily leads to seedling accumulation, compression, and epidermal damage, making it impossible to achieve uniform single-layer conveying and significantly reducing the survival rate of seedlings. 2. Existing equipment for sowing Codonopsis pilosula has insufficient flexibility in adjusting sowing parameters, making it difficult to adapt to the complex terrain and diverse agronomic requirements of hilly and mountainous areas. Its versatility and operational stability are also poor. Summary of the Invention

[0004] In order to overcome the defects and deficiencies in the existing technology, the purpose of this invention is to provide a multi-functional operation equipment for precision sowing of Codonopsis pilosula and its control method. Through the integrated innovation of the whole machine structure and the optimized design of the core mechanism, it is adapted to the physiological characteristics of Codonopsis pilosula seedlings and the planting scene in hilly and mountainous areas, so as to realize the precision, low loss and whole-process integration of Codonopsis pilosula sowing operation, and solve the technical problems existing in the existing technology.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: Firstly, a multi-functional precision sowing equipment for Codonopsis pilosula is provided, including a frame. The frame serves as the mounting and supporting base for the entire machine and adopts a compact frame structure design, which can flexibly adapt to the operation scenarios of small fields in hilly and mountainous areas. Along the direction of operation, the frame is sequentially equipped with a leveling mechanism, a feeding and seedling equalization mechanism, a precision sowing mechanism, a ditching and lifting mechanism, and an adaptive soil covering mechanism, realizing integrated operation of the entire Codonopsis pilosula sowing process, reducing the number of times the machine enters the field, and reducing the adverse effects of repeated soil compaction on the growth of Codonopsis pilosula.

[0006] The discharge end of the feeding and seedling equalization mechanism is connected to the feeding end of the precision sowing mechanism. This is used to complete the anti-blocking feeding, sorting, uniform distribution, and orderly conveying of the Codonopsis pilosula seedlings, avoiding equipment blockage and operation interruption caused by seedling entanglement and bridging. At the same time, it realizes the uniform single-layer conveying of seedlings and reduces seedling damage during the conveying process. The ditching and lifting mechanism is connected to the precision sowing mechanism to realize the ditching operation and precise adjustment of the sowing depth, ensuring the consistency of the sowing depth. The frame is also equipped with a drive assembly and a control assembly. The drive assembly provides power input for the operation of each mechanism of the whole machine, and the control assembly is used to collect the operating parameters of each mechanism and regulate the operating status of each mechanism to realize the orderly and coordinated operation of each functional module.

[0007] Furthermore, the seedling feeding and leveling mechanism includes a hopper assembly, a roller combing assembly, a brush leveling assembly, and a belt conveyor assembly. The hopper assembly adopts a multi-compartment structure design for batch storage and uniform discharge of seedlings. The discharge port of the hopper assembly is connected to the feed end of the roller combing assembly. The roller combing assembly is used to break up clumps of seedlings, achieving initial sorting and anti-clogging of seedlings. The brush leveling assembly is located above the belt conveyor assembly and is used to perform secondary combing and leveling of seedlings during the conveying process, ensuring a uniform single-layer distribution of seedlings on the conveying surface. The discharge end of the roller combing assembly faces the feed end of the belt conveyor assembly, so that the combed seedlings fall orderly into the feed end of the belt conveyor assembly.

[0008] Furthermore, the conveying surface of the belt conveyor assembly is provided with a groove structure, which is used for limiting and supporting single seedlings to achieve seedling positioning and conveying, ensuring the accuracy of subsequent precision sowing. An adjustable working gap is left between the brush body of the brush leveling assembly and the conveying surface of the belt conveyor assembly. By adjusting the working gap, different sizes of seedlings can be adapted, while avoiding the accumulation of excess seedlings and ensuring the single-layer conveying effect.

[0009] Furthermore, a tower wheel type pitch-changing mechanism is provided between the feed end of the precision seeding mechanism and the discharge end of the belt conveyor assembly. The tower wheel type pitch-changing mechanism is connected to the drive assembly for transmission. The linear speed difference of the coaxial gear set with different diameters enables stepless and precise adjustment of the seeding spacing, adapting to different planting agronomic requirements and improving the versatility of the machine.

[0010] Furthermore, the trenching lifting mechanism includes a gear and rack transmission assembly and an optical axis guide rail assembly. The gear and rack transmission assembly is connected to the execution end of the precision seeding mechanism, and the precise adjustment of the seeding depth is achieved through the transmission of the gear and rack. The optical axis guide rail assembly is slidably connected to the execution end of the precision seeding mechanism to ensure the stability of operation during the lifting process, avoid deviation and shaking during operation, and ensure seeding accuracy.

[0011] Furthermore, the adaptive soil covering mechanism includes a flexible soil covering roller and an elastic buffer assembly. The two ends of the elastic buffer assembly are connected to the frame and the flexible soil covering roller, respectively, so that the flexible soil covering roller can adaptively adjust its working posture according to the undulation of the field terrain, ensuring the uniformity of the soil covering thickness, and at the same time, it works with the leveling mechanism to complete the surface leveling operation after sowing.

[0012] Furthermore, the end of the frame is equipped with a plastic film recycling mechanism, which is connected to the drive assembly. This mechanism can complete the recycling of residual plastic film in the field while sowing, realizing the resource utilization of agricultural waste and meeting the development requirements of green agriculture.

[0013] Furthermore, the drive assembly adopts a single-motor drive structure, which is connected to the transmission end of each mechanism through an electromagnetic clutch component. This enables independent start / stop and coordinated switching of each functional module, reducing the energy consumption and maintenance cost of the whole machine. At the same time, it simplifies the overall structure, lowers the operating threshold, and adapts to the operational needs of grassroots farmers.

[0014] Secondly, a control method for a multi-functional precision seeding equipment for Codonopsis pilosula is provided, applied to the multi-functional precision seeding equipment for Codonopsis pilosula mentioned in the first aspect above, comprising the following steps: S1. Pre-operation parameter calibration: The operator sets the core operating parameters such as sowing spacing and sowing depth through the human-machine interaction unit of the control assembly. The control assembly outputs control commands according to the set parameters, driving the tower wheel type pitch change mechanism and the trenching lifting mechanism to complete the calibration and positioning of the operating parameters. S2. Full-process collaborative operation: Start the drive assembly and the whole machine moves along the working direction. The leveling mechanism first completes the leveling of the field surface, breaking up the surface soil and smoothing the surface undulations to provide a flat seedbed for subsequent sowing operations. The feeding and seedling equalization mechanism simultaneously completes the anti-blocking feeding, sorting, even distribution and orderly positioning of seedlings, and orderly transports individual seedlings to the feeding end of the precision sowing mechanism. The precision sowing mechanism, together with the ditching and lifting mechanism, completes the digging of the seed ditch and the precise sowing of seedlings. The adaptive soil covering mechanism simultaneously completes the even soil covering and surface leveling operations after sowing, realizing the integrated collaborative operation of the entire sowing process. S3. Real-time control of operating status: During operation, the control assembly collects the operating parameters of each mechanism and the field operation conditions in real time through the sensor unit, and dynamically adjusts the operating status of each mechanism according to the collected real-time data to ensure the continuity, stability and sowing accuracy of the operation process.

[0015] Furthermore, in step S3, the control assembly collects the conveying load data of the seedling feeding and leveling mechanism, and adjusts the relative working gap between the brush leveling component and the belt conveyor component in real time to avoid equipment blockage and operation interruption caused by seedling accumulation and entanglement, while ensuring the uniform single-layer conveying effect of seedlings.

[0016] Due to the adoption of the above technical solution, the technical progress achieved by this invention compared to the prior art is as follows: 1. This invention achieves integrated operation of the entire process of sowing Codonopsis pilosula through integrated design of the whole machine. It can complete the entire process of leveling, ditching, seedling uniformity, precision sowing, and soil covering and leveling in one go, reducing the number of times the machine enters the field, reducing the adverse effects of repeated soil compaction on the growth of Codonopsis pilosula, and greatly improving the efficiency of sowing operation.

[0017] 2. This invention adopts a compact overall frame design, which can be flexibly adapted to the operation scenarios of small fields in hilly and mountainous areas, solving the industry pain points of large seeding machinery being unable to enter and having difficulty turning, and perfectly adapting to the terrain characteristics of the main production areas of Codonopsis pilosula.

[0018] 3. This invention achieves integrated processing of seedling anti-blocking feeding, sorting and even distribution through the multi-component collaborative design of the feeding and seedling distribution mechanism, effectively avoiding equipment blockage and operation interruption caused by seedling entanglement and bridging, and ensuring the continuity of sowing operations.

[0019] 4. This invention optimizes the seedling conveying structure design. By combining the grooved conveying structure with the adjustable brush evenly distributing component, it achieves uniform single-layer positioning and conveying of seedlings, greatly reducing the squeezing, bending and scratching damage of seedlings during the conveying process, and effectively ensuring the seedling survival rate.

[0020] 5. This invention innovatively sets up a tower wheel type pitch-changing mechanism, which realizes stepless adaptive adjustment of the sowing plant spacing through the cooperation of coaxial gear sets with different diameters. It can flexibly adapt to different planting agronomic requirements and greatly improve the versatility and applicability of the machine.

[0021] 6. This invention achieves precise and stable adjustment of sowing depth through the gear and rack transmission of the ditching lifting mechanism and the cooperation of the optical axis guide rail. It can flexibly adapt to complex field terrain and different soil conditions, ensure the consistency of sowing depth, and improve the uniformity of seedling emergence.

[0022] 7. This invention integrates a plastic film recycling module, which can complete the recycling of residual plastic film in the field at the same time as sowing, realize the resource utilization of agricultural waste, respond to the call for the development of green agriculture and new quality productivity, and has both economic and ecological benefits. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a partial structural diagram of the feeding and seedling equalization mechanism in this invention; Figure 3 This is a partial structural diagram of the tower wheel type pitch-changing mechanism in this invention; Figure 4 This is a partial structural diagram of the trenching lifting mechanism and the adaptive soil covering mechanism in this invention; Figure 5 This is a flowchart illustrating the control method of the present invention.

[0024] The markings in the attached diagram are as follows: 1. Frame; 2. Leveling mechanism; 3. Feeding and seedling equalization mechanism; 31. Feed hopper assembly; 32. Roller combing assembly; 33. Brush material equalization assembly; 34. Belt conveyor assembly; 4. Tower wheel type pitch changing mechanism; 5. Precision seeding mechanism; 6. Ditching and lifting mechanism; 61. Gear and rack transmission assembly; 62. Optical shaft guide rail assembly; 7. Adaptive soil covering mechanism; 71. Flexible soil covering roller; 72. Elastic buffer assembly; 8. Drive assembly; 9. Control assembly; 10. Mulch film recycling mechanism. Detailed Implementation

[0025] The present invention will be further described in detail below with reference to the accompanying drawings, specific embodiments, examples, and comparative examples. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of protection of the present invention.

[0026] Implementation Plan Firstly, this implementation plan provides a multi-functional precision seeding equipment for Codonopsis pilosula, such as... Figures 1-4 As shown, the machine includes a frame 1, which adopts an integrated welded frame structure with a compact design, allowing it to flexibly enter small fields in hilly and mountainous areas to complete operations. Along the operating direction, from front to back, the following components are fixedly installed on the frame 1: a leveling mechanism 2, a feeding and seedling equalization mechanism 3, a tower wheel-type pitch-changing mechanism 4, a precision seeding mechanism 5, a ditching and lifting mechanism 6, and an adaptive soil covering mechanism 7. A plastic film recycling mechanism 10 is fixedly installed at the rear of the frame 1, and a drive assembly 8 and a control assembly 9 are fixedly installed in the middle of the frame 1.

[0027] Among them, the leveling mechanism 2 adopts an adjustable leveling shovel structure, which is fixedly connected to the front end of the frame 1 by bolts. The working height can be adjusted according to the field surface conditions. It is used to break up surface soil clods, smooth out surface undulations, and provide a flat seedbed for sowing operations.

[0028] The seedling feeding and leveling mechanism 3 includes a hopper assembly 31, a roller combing assembly 32, a brush leveling assembly 33, and a belt conveyor assembly 34. The hopper assembly 31 adopts a three-compartment structure with one main and two auxiliary compartments, and is fixedly installed on the upper part of the frame 1. The bottom outlet of the hopper assembly 31 faces the feed end of the roller combing assembly 32. The roller combing assembly 32 adopts a structure with double rollers and a brush, and is rotatably installed on the frame 1 to break up clumps of seedlings, achieving initial sorting and anti-clogging feeding. The belt conveyor assembly 34 rotates... The feed end of the roller combing assembly 32 is located below the discharge end of the roller combing assembly 32. The conveying surface of the belt conveyor assembly 34 is uniformly provided with groove structures for limiting the position of individual seedlings. The brush leveling assembly 33 is rotatably installed above the belt conveyor assembly 34. The working gap between the brush body of the brush leveling assembly 33 and the conveying surface of the belt conveyor assembly 34 can be adjusted by adjusting bolts. It is used to perform secondary combing on the seedlings during the conveying process to ensure that the seedlings are evenly distributed in a single layer on the conveying surface.

[0029] The tower wheel type pitch mechanism 4 adopts a three-stage coaxial differential tower wheel structure, which is rotatably mounted on the frame 1. Its power input end is connected to the drive assembly 8, and its power output end is connected to the feed end of the precision seeding mechanism 5. By using the linear speed difference of tower wheels with different diameters, the stepless and precise adjustment of the seeding spacing can be achieved.

[0030] The trenching lifting mechanism 6 includes a gear and rack transmission assembly 61 and an optical axis guide rail assembly 62. The gear end of the gear and rack transmission assembly 61 is connected to the drive assembly 8, and the rack end is fixedly connected to the sowing execution end of the precision sowing mechanism 5, which is used to drive the sowing execution end to lift and adjust the sowing depth. The optical axis guide rail assembly 62 is vertically fixed on the frame 1, and the sowing execution end slides with the optical axis guide rail assembly 62 to ensure the stability of the lifting process and avoid deviation and shaking.

[0031] The adaptive soil covering mechanism 7 includes a flexible soil covering roller 71 and an elastic buffer assembly 72. The flexible soil covering roller 71 is rotatably mounted at the rear of the frame 1, located behind the sowing execution end. The elastic buffer assembly 72 adopts a tension spring structure, with its two ends connected to the frame 1 and the mounting base of the flexible soil covering roller 71, respectively, so that the flexible soil covering roller 71 can adaptively adjust its working posture according to the undulation of the field terrain, ensuring that the soil covering thickness is uniform.

[0032] The drive assembly 8 adopts a single-motor drive structure. The motor output is connected to the transmission end of each mechanism via an electromagnetic clutch assembly, enabling independent start / stop and coordinated switching of each functional module, reducing overall energy consumption and maintenance costs. The control assembly 9 includes a PLC controller, a human-machine interface touchscreen, and multiple sensor units. The sensor units are installed at the transmission end of each mechanism to collect operating parameters. The PLC controller is electrically connected to the human-machine interface touchscreen, sensor units, and electromagnetic clutch assembly to achieve automated control of the entire machine operation.

[0033] The working principle of this multi-functional precision seeding equipment for Codonopsis pilosula is as follows: During operation, the whole machine moves along the field under the drive of the traction equipment. The leveling mechanism 2 at the front end first levels the field surface, breaks up soil clods, and smooths out undulations to provide a flat seedbed for subsequent sowing. At the same time, the Codonopsis pilosula seedlings in the feed hopper component 31 of the feeding and seedling equalization mechanism 3 are broken up and piled by the roller combing component 32 and fall into the groove of the belt conveyor component 34 in an orderly manner. After being combed by the brush equalization component 33 above, the excess piled seedlings are removed, realizing the uniform single-layer positioning and conveying of individual seedlings, avoiding the squeezing damage of seedlings and equipment blockage.

[0034] The seedlings delivered to the end are adjusted in distance by the tower wheel type variable pitch mechanism 4 and then enter the execution end of the precision sowing mechanism 5. The ditching and lifting mechanism 6 drives the ditching component to open the seed furrow according to the set sowing depth. The precision sowing mechanism 5 accurately sows the individual seedlings into the seed furrow. The adaptive soil covering mechanism 7 behind, with the cooperation of the elastic buffer component 72, adapts to the field terrain and evenly covers the seed furrow after sowing with soil, while also leveling the ground surface to ensure consistent soil covering thickness.

[0035] During operation, the single-motor driven drive assembly 8 uses an electromagnetic clutch component to realize the power distribution and coordinated switching of each mechanism. The control assembly 9 collects the operating parameters of each mechanism in real time through the sensor unit and adjusts the operating status of each mechanism in real time according to the field conditions to ensure the continuity, stability and sowing accuracy of the operation. The plastic film recycling mechanism 10 at the tail of the frame 1 can simultaneously complete the recycling of residual plastic film in the field to achieve green operation.

[0036] Secondly, this implementation plan also provides a control method for a multi-functional equipment for precision seeding of Codonopsis pilosula, such as... Figure 5 As shown, it includes the following steps: S1. Before operation, the operator sets the core operation parameters of sowing spacing and sowing depth through the human-machine interactive touch screen. The PLC controller outputs control instructions according to the set parameters, drives the tower wheel type pitch mechanism 4 to adjust to the corresponding spacing level, and drives the ditching lifting mechanism 6 to adjust to the corresponding sowing depth to complete the parameter calibration. At the same time, according to the specifications of the seedlings, the operation gap between the brush uniform component 33 and the belt conveyor component 34 is adjusted to complete the preparation before operation.

[0037] S2. Start the drive assembly 8. The whole machine is driven by the traction equipment to move along the working direction. The leveling mechanism 2 first completes the field surface leveling operation. The feeding and seedling equalization mechanism 3 operates simultaneously. The seedlings in the hopper assembly 31 fall into the roller combing assembly 32. After being broken up and piled up, they fall into the groove of the belt conveyor assembly 34 in an orderly manner. After being combed by the brush equalization assembly 33, the positioning and transportation of individual seedlings are realized and transported to the feeding end of the precision sowing mechanism 5. The precision sowing mechanism 5 works with the ditching mechanism to complete the digging of the seed ditch and the precise sowing of seedlings. The adaptive soil covering mechanism 7 simultaneously completes the uniform soil covering and leveling, realizing the integrated operation of the whole process.

[0038] S3. During operation, the sensing unit of the control assembly 9 collects parameters such as the operating load and speed of each mechanism in real time. When the load of the feeding and seedling equalization mechanism 3 is detected to be abnormally high, the PLC controller automatically adjusts the working gap of the brush equalization component 33 to avoid seedling accumulation and blockage. At the same time, the working height of the ditching lifting mechanism 6 is adjusted in real time according to the changes in the field terrain to ensure consistent sowing depth.

[0039] The present invention will be further described in detail below with reference to embodiments: Example 1

[0040] This embodiment uses the multi-functional precision seeding equipment for Codonopsis pilosula according to the above-described implementation plan. Field trials were conducted in hilly and mountainous areas in the main production area of ​​Codonopsis pilosula. The soil in the experimental fields was sandy loam with uniform fertility, and the previous crop was rice.

[0041] Test parameter settings: The working gap between the brush uniform component 33 and the belt conveyor component 34 was set to 30mm, the sowing spacing was set to 6cm, the sowing depth was set to 5cm, the overall machine operating speed was set to 2km / h, and the continuous operating time was 2h.

[0042] Experimental results: The operating efficiency of this embodiment reached 0.8 hm² / h, which is more than 20 times higher than that of traditional manual sowing. The coefficient of variation for sowing plant spacing was 3.7%, and the coefficient of variation for sowing depth was 4.1%. The sowing precision met the agronomic requirements for precision planting of Codonopsis pilosula. The damage rate during seedling transportation was 1.1%. No blockage of the feed inlet or need for machine shutdown and cleaning occurred during 2 hours of continuous operation. The seedling emergence rate was 95.6% 20 days after sowing, with excellent uniformity of emergence. Example 2

[0043] This embodiment uses the multi-functional precision seeding equipment for Codonopsis pilosula according to the above-described implementation plan. Field trials were conducted in hilly and mountainous areas in the main production area of ​​Codonopsis pilosula. The soil in the experimental fields was yellow loam with uniform fertility, and the previous crop was corn.

[0044] Test parameter settings: The working gap between the brush uniform component 33 and the belt conveyor component 34 was set to 30mm, the sowing spacing was set to 8cm, the sowing depth was set to 6cm, the overall machine operating speed was set to 3km / h, and the continuous operating time was 1.5h.

[0045] Experimental results: The operating efficiency of this embodiment reached 1.2 hm² / h, which is more than 30 times higher than that of traditional manual sowing. The coefficient of variation for sowing plant spacing was 4.4%, the coefficient of variation for sowing depth was 4.7%, the sowing precision met the agronomic requirements for Codonopsis pilosula cultivation, the damage rate during seedling transportation was 1.4%, and no blockage of the feed inlet or need for machine shutdown and cleaning occurred during 1.5 hours of continuous operation. The seedling emergence rate was 93.2% 20 days after sowing, and the seedling uniformity was good.

[0046] Comparative Example This comparative experiment used conventional Codonopsis pilosula planting machinery available on the market and conducted a control experiment under the same field, soil conditions, and operating parameters as Example 1.

[0047] Experimental parameter settings: sowing spacing was set to 6cm, sowing depth was set to 5cm, operating speed was set to 2km / h, and continuous operation time was 2h.

[0048] Experimental results: The operating efficiency of this comparative example was 0.3 hm² / h, which was only 37.5% of that of Example 1 of this invention. The coefficient of variation for sowing spacing was 12.8%, and the coefficient of variation for sowing depth was 15.6%. The sowing accuracy was much lower than that of this invention. The damage rate during seedling transportation was 8.9%. During continuous operation, the feed inlet was blocked once every 20 minutes, and the cumulative downtime for cleaning reached 28 minutes. The seedling emergence rate was 77.5% 20 days after sowing. The seedling uniformity was poor and could not meet the requirements for standardized planting of Codonopsis pilosula.

[0049] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A multi-functional precision seeding equipment for Codonopsis pilosula, comprising a frame, characterized in that, The frame is sequentially equipped with a leveling mechanism, a feeding and seedling equalization mechanism, a precision seeding mechanism, a ditching and lifting mechanism, and an adaptive soil covering mechanism along the working direction. The discharge end of the feeding and seedling equalization mechanism is connected to the feeding end of the precision seeding mechanism, the furrowing and lifting mechanism is connected to the precision seeding mechanism, and the frame is also equipped with a drive assembly for driving the coordinated operation of each mechanism, and a control assembly for regulating the operating status of each mechanism. The feeding and leveling mechanism includes a hopper assembly, a roller combing assembly, a brush leveling assembly, and a belt conveyor assembly; the outlet of the hopper assembly is connected to the inlet of the roller combing assembly, the brush leveling assembly is positioned above the belt conveyor assembly, and the outlet of the roller combing assembly faces the inlet of the belt conveyor assembly.

2. The multi-functional equipment for precision seeding of Codonopsis pilosula according to claim 1, characterized in that, The conveying surface of the belt conveyor assembly is provided with a groove structure for limiting the support of seedlings, and an adjustable working gap is left between the brush body of the brush leveling assembly and the conveying surface of the belt conveyor assembly.

3. The multi-functional equipment for precision seeding of Codonopsis pilosula according to claim 1, characterized in that, A tower wheel type pitch-changing mechanism is provided between the feed end of the precision seeding mechanism and the discharge end of the belt conveyor assembly. The tower wheel type pitch-changing mechanism is connected to the drive assembly for adjusting the seeding spacing.

4. The multi-functional equipment for precision seeding of Codonopsis pilosula according to claim 1, characterized in that, The trenching lifting mechanism includes a gear and rack transmission assembly and an optical axis guide rail assembly. The gear and rack transmission assembly is connected to the execution end of the precision seeding mechanism for adjusting the seeding depth, and the optical axis guide rail assembly is used to ensure the operational stability of the lifting operation.

5. The multi-functional equipment for precision seeding of Codonopsis pilosula according to claim 1, characterized in that, The adaptive soil covering mechanism includes a flexible soil covering roller and an elastic buffer assembly. The two ends of the elastic buffer assembly are connected to the frame and the flexible soil covering roller, respectively, so that the flexible soil covering roller can adaptively conform to the field terrain.

6. The multi-functional equipment for precision seeding of Codonopsis pilosula according to claim 1, characterized in that, The end of the frame is also equipped with a plastic film recycling mechanism, which is connected to the drive assembly to realize the recycling of residual plastic film in the field.

7. The multi-functional equipment for precision seeding of Codonopsis pilosula according to claim 1, characterized in that, The drive assembly adopts a single-motor drive structure, which is connected to the transmission end of each mechanism through an electromagnetic clutch assembly to realize the independent start-stop and coordinated switching of each functional module.

8. A control method for a multi-functional precision seeding equipment for Codonopsis pilosula, applied to the multi-functional precision seeding equipment for Codonopsis pilosula described in claim 3, characterized in that, Includes the following steps: S1. Pre-operation parameter calibration: The sowing spacing and sowing depth are set by the control assembly, and the control assembly controls the tower wheel type pitch change mechanism and the furrowing lifting mechanism to complete the parameter calibration. S2. Full-process collaborative operation: Start the drive assembly, the leveling mechanism first completes the field surface leveling operation, the feeding and seedling equalization mechanism completes the anti-blocking, piling, equalization and orderly transportation of seedlings, the precision sowing mechanism cooperates with the ditching and lifting mechanism to complete the digging of the seed ditch and the precise sowing of seedlings, and the adaptive soil covering mechanism simultaneously completes the soil covering and leveling operation after sowing. S3. Real-time control of operating status: The control assembly collects the operating parameters of each mechanism in real time and adjusts the operating status of each mechanism in real time according to the field operation conditions to ensure the continuity and stability of the operation.

9. The control method for a multi-functional precision seeding equipment for Codonopsis pilosula according to claim 8, characterized in that, In step S3, the control assembly collects the conveying load data of the feeding and seedling leveling mechanism and adjusts the relative positions of the brush leveling component and the belt conveyor component in real time to avoid seedling accumulation and equipment blockage.

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