Self-adaptive seedling receiving and conveying mechanism with adjustable planting row spacing

Abstract

The invention discloses a self-adaptive seedling receiving and conveying mechanism with adjustable planting line spacing, and relates to the technical field of agricultural machinery, the self-adaptive seedling receiving and conveying mechanism comprises a driving device, two seedling guide cylinders, two mounting boxes and two planting assemblies; the top end of the seedling guide cylinder is used for being fixedly arranged below a seedling feeding mechanism, a seedling receiving opening is formed in the top end of the seedling guide cylinder, the bottom end of the seedling guide cylinder can transversely move relative to the top end of the seedling guide cylinder so as to be close to or away from the top end of the seedling guide cylinder, the bottom end of the seedling guide cylinder is connected with the mounting box, and a seedling outlet is formed in the bottom end of the seedling guide cylinder; a seedling guide channel is arranged in the seedling guide cylinder; the planting assembly is arranged on the mounting box and comprises a planting device, and when the planting device is arranged at the seedling receiving position, seedlings thrown from the seedling outlet can be received; the driving device can provide power for the two mounting boxes to get close to each other or get away from each other; according to the invention, the rapid and efficient adjustment of the transplanting line spacing is realized, and the seedling dropping precision and the operation adaptability after the line spacing adjustment are effectively improved.

Description

Technical Field

[0001] This invention relates to the field of agricultural machinery technology, and in particular to an adaptive seedling receiving and conveying mechanism with adjustable planting row spacing. Background Technology

[0002] Transplanting is a crucial step in vegetable crop production, effectively improving crop survival rates, extending the growing season, and increasing yield and quality. Transplanters are essential machinery in vegetable crop transplanting operations. The performance of a transplanter, especially the row spacing adjustment capability of its planting device, directly affects its adaptability to different crops and agronomical requirements, ultimately impacting production efficiency.

[0003] Currently, the mainstream transplanting machines mainly use either fixed or manually adjustable row spacing. Fixed row spacing planting devices are simple in structure and low in cost, but their row spacing parameters are fixed during design and manufacturing and cannot be adjusted according to changes in crop type, variety characteristics, soil conditions, or cultivation mode. Most manually adjustable row spacing planting devices only provide a few fixed row spacing settings. In actual adjustment, it is often necessary to manually replace sprockets, gears, or move the bulky planting unit as a whole, or even disassemble and reassemble parts of the structure. This is time-consuming and labor-intensive, and it is impossible to quickly complete the row spacing adjustment during work breaks, which seriously affects work efficiency and mobility.

[0004] Furthermore, it is difficult to simultaneously adjust row spacing and the seedling receiving position of the planter. When the lateral position of the planter changes, the seedling delivery path from the upper seedling feeding mechanism to the planter also changes. With existing technology, after row spacing adjustment, the seedling's falling path cannot automatically align with the new receiving position, which can easily lead to seedling delivery failure, blockage of the seedling guide tube, seedlings hitting the side wall of the planter, or falling into the rows, resulting in missed planting and damaged seedlings. This severely restricts the practical application effect of the row spacing adjustment function. Summary of the Invention

[0005] The purpose of this invention is to provide an adaptive seedling receiving and delivery mechanism with adjustable planting row spacing to solve the problems existing in the prior art, realize the rapid and efficient adjustment of transplanting row spacing, and effectively improve the seedling delivery accuracy and operational adaptability after row spacing adjustment.

[0006] To achieve the above objectives, the present invention provides the following solution: This invention provides an adaptive seedling receiving and delivery mechanism with adjustable planting row spacing, including a drive device, two seedling guide tubes, two mounting boxes, and two planting components. Each seedling guide tube corresponds to one of the mounting boxes. The top of each seedling guide tube is fixedly positioned below the seedling delivery mechanism. Each seedling guide tube has a receiving port at its top for receiving seedlings delivered by the delivery mechanism. The bottom of each seedling guide tube is positioned below its top and can move laterally relative to its top to move closer to or further away from the top. The bottom of each seedling guide tube is connected to the mounting box. The bottom of the seedling guide tube has a seedling outlet, and the seedling guide tube has a seedling channel that connects the seedling outlet to the seedling receiving outlet. Each planting component corresponds to one of the mounting boxes and is mounted on the mounting box. Each planting component includes a planter that can move to the seedling receiving position and receive seedlings dropped from the seedling outlet when placed there. The two mounting boxes can move closer to or further apart from each other. The driving device is connected to both mounting boxes and provides power for the two mounting boxes to move closer or further apart.

[0007] Preferably, the seedling guide tube includes an upper section and a lower section. The upper section is fixedly disposed below the seedling delivery mechanism. The seedling receiving port is opened at the top of the upper section. The lower section is placed below the upper section. The top of the lower section is hinged to the bottom of the upper section. The bottom of the lower section is hinged to the mounting box. The length of the lower section can be changed.

[0008] Preferably, the bottom end of the upper section has a limiting protrusion, and the top end of the lower section has a spherical raceway. The limiting protrusion is placed inside the spherical raceway, and the spherical raceway can rotate relative to the limiting protrusion.

[0009] Preferably, a retainer is fixedly sleeved on the limiting protrusion, and a plurality of constraint grooves are provided on the retainer. A ball is provided in the constraint groove, the ball can be constrained in the constraint groove and can rotate in the constraint groove, and the ball can contact the inner sidewall of the spherical raceway.

[0010] Preferably, the lower section includes an inner sleeve and an outer sleeve. The top end of the inner sleeve is hinged to the bottom end of the upper section. The outer sleeve is fitted over the inner sleeve and can move upward or downward relative to the inner sleeve. The bottom end of the outer sleeve is hinged to the mounting box.

[0011] Preferably, the inner sleeve has an annular limiting portion on the outer wall at the bottom end, and the outer sleeve has an annular limiting flange at the top end. The annular limiting portion can prevent the annular limiting flange from moving downward.

[0012] Preferably, the upper section includes a funnel section and an installation section. The inner wall of the funnel section gradually tapers inward from top to bottom. The funnel section is placed above the installation section. The bottom end of the funnel section is fixedly connected to the top end of the installation section. The bottom end of the installation section is hinged to the top end of the lower section.

[0013] Preferably, it also includes two fixing brackets, each corresponding to one of the mounting boxes. One end of each fixing bracket is fixedly connected to the mounting box, and the other end of each fixing bracket is hinged to the bottom end of the lower section.

[0014] Preferably, the driving device includes a bidirectional lead screw module, which includes a bidirectional lead screw, a guide rail, two nuts, two sliders, two bearings, and two bearing seats. The bidirectional lead screw has two threaded sections with opposite directions of rotation. Two nuts are respectively fitted onto the two threaded sections. The two sliders are respectively fixedly connected to the two nuts and are disposed on the guide rail. The two sliders can move along the guide rail as the bidirectional lead screw rotates. The two bearing seats are fixedly connected to the guide rail, and the two bearings correspond one-to-one with the two bearing seats and one-to-one with the two ends of the bidirectional lead screw. The inner ring of the bearing is fixedly fitted onto one end of the bidirectional lead screw, and the outer ring of the bearing is fixedly disposed within the bearing seat. The two mounting boxes are respectively fixedly connected to the two sliders.

[0015] Preferably, the drive device further includes a support frame, a stepper motor, and a coupling. The guide rail is fixedly mounted on the support frame. The housing of the stepper motor is fixedly connected to the support frame. One end of the coupling is fixedly connected to the power output shaft of the stepper motor, and the other end of the coupling is fixedly connected to one end of the bidirectional lead screw.

[0016] The present invention achieves the following technical effects compared to the prior art: The present invention provides an adaptive seedling receiving and conveying mechanism with adjustable planting row spacing. The planting components are mounted on mounting boxes, and a drive device moves the two mounting boxes closer to or further apart, thereby enabling the two planting components to move closer or further apart. This achieves rapid and efficient adjustment of the transplanting row spacing, solving the key problem of inconvenient row spacing adjustment in existing transplanters. The bottom end of the seedling guide tube can move laterally relative to its top end to move closer to or further away from the top end. The top end of the seedling guide tube is fixed below the seedling delivery mechanism, and the bottom end of the seedling guide tube is connected to the mounting box. During transplanting row spacing adjustment, the top end of the seedling guide tube... The seedling receiving port position remains fixed, and the bottom end of the seedling guide tube moves synchronously with the movement of the installation box. This allows for automatic adjustment of the length of the seedling guide tube and the angle of the seedling outlet, fixing the seedling placement position to adapt to changes in the position of the planter when the row spacing changes. This ensures that when the planter is in the receiving position, it can receive the seedlings dropped from the seedling outlet, ensuring that the seedlings falling from the seedling delivery mechanism can always be accurately guided into the planter after the row spacing is changed. This guarantees that the seedlings are accurately guided to the planting position, achieving adaptive compensation of the seedling guide path. This effectively improves the seedling placement accuracy and operational adaptability after the row spacing is adjusted, solving the key problems of seedling placement path deviation and decreased seedling placement accuracy after the row spacing changes. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the adaptive seedling receiving and conveying mechanism with adjustable planting row spacing provided by the present invention. Figure 2 This is a schematic diagram of the seedling guide tube in the adaptive seedling receiving and conveying mechanism with adjustable planting row spacing provided by the present invention. Figure 3 This is a schematic diagram of the retainer and rolling ball in the adaptive seedling receiving and transport mechanism with adjustable planting row spacing provided by the present invention; Figure 4 This is a schematic diagram of the drive device, mounting box, and planting components in the adaptive seedling receiving and transport mechanism with adjustable planting row spacing provided by the present invention. In the diagram: 1. Seedling delivery mechanism, 2. Seedling guide tube, 3. Fixing frame, 4. Drive device, 5. Support frame, 201. Funnel section, 202. Installation section, 203. Inner sleeve, 204. Outer sleeve, 2021. Ball bearing, 2022. Cage, 401. Coupling, 402. Stepper motor, 403. Guide rail, 404. Two-way lead screw, 405. Slider, 406. Bearing seat, 407. Planetary gear mechanism, 408. Planter, 6. Installation box. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] The purpose of this invention is to provide an adaptive seedling receiving and delivery mechanism with adjustable planting row spacing to solve the problems existing in the prior art, realize the rapid and efficient adjustment of transplanting row spacing, and effectively improve the seedling delivery accuracy and operational adaptability after row spacing adjustment.

[0021] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] Example 1 like Figures 1 to 4 As shown, this embodiment provides an adaptive seedling receiving and delivery mechanism with adjustable planting row spacing, including a drive device 4, two seedling guide tubes 2, two mounting boxes 6, and two planting components. The seedling guide tubes 2 and mounting boxes 6 correspond one-to-one. The top of each seedling guide tube 2 is fixedly positioned below the seedling delivery mechanism 1. A seedling receiving port is provided at the top of each seedling guide tube 2 to receive seedlings delivered by the seedling delivery mechanism 1. The bottom of each seedling guide tube 2 is positioned below its top. The bottom of each seedling guide tube 2 can move laterally relative to its top to move closer to or further away from the top. The mounting box 6 is connected, and the bottom of the seedling guide tube 2 is provided with a seedling outlet. The seedling guide tube 2 has a seedling guide channel that can connect the seedling outlet and the seedling receiving port. The planting component corresponds to the mounting box 6 one by one and is set on the mounting box 6. The planting component includes a planter 408, which can be moved to the seedling receiving position. When the planter 408 is placed in the seedling receiving position, it can receive the seedlings dropped from the seedling outlet. The two mounting boxes 6 can move closer to each other or further away from each other. The driving device 4 is connected to the two mounting boxes 6 through a transmission. The driving device 4 can provide power for the two mounting boxes 6 to move closer to each other or further away from each other.

[0023] The adaptive seedling receiving and conveying mechanism with adjustable planting row spacing provided in this embodiment installs the planting components on the mounting box 6. The driving device 4 drives the two mounting boxes 6 to move closer or further apart, thereby achieving rapid and efficient adjustment of the transplanting row spacing. This solves the key problem of inconvenient row spacing adjustment in existing transplanters. The bottom end of the seedling guide tube 2 can move laterally relative to its top end to move closer or further away from the top end. The top end of the seedling guide tube 2 is fixed below the seedling conveying mechanism 1, and the bottom end of the seedling guide tube 2 is connected to the mounting box 6. During transplanting row spacing adjustment, the seedling receiving port position at the top of the seedling guide tube 2 remains fixed, while the bottom end of the seedling guide tube 2 moves with the mounting box 6. The mechanism moves synchronously, automatically adjusting the length of the seedling guide tube 2 and the angle of the seedling outlet to fix the seedling placement position. This adapts to changes in the position of the planter 408 when the row spacing changes, ensuring that the planter 408 can receive the seedlings dropped from the seedling outlet when it is positioned to receive the seedlings. This ensures that the seedlings falling from the seedling delivery mechanism 1 are always accurately guided into the planter 408 after the row spacing is changed, guaranteeing that the seedlings are accurately guided to the planting position. This achieves adaptive compensation of the seedling guide path, effectively improving the seedling placement accuracy and operational adaptability after the row spacing is adjusted. It solves the key problems of seedling placement path deviation and decreased seedling placement accuracy after the row spacing changes. The adaptive seedling receiving and delivery mechanism with adjustable planting row spacing provided in this embodiment is particularly suitable for adjusting the transplanting row spacing of vegetable crops.

[0024] As a preferred embodiment of this invention, the planting assembly further includes a planetary gear mechanism 407, on which two planters 408 (duckbill type) are mounted. The opening and closing of the planters 408 is switched by a cam drive. The rotation of the planetary gears ensures that the working process of the planters 408 is consistent in each working cycle. It should be noted that the planetary gear mechanism 407 and the planters 408 (duckbill type) can both adopt conventional structures. This embodiment does not involve specific improvements to the planetary gear mechanism 407 and the planters 408 (duckbill type).

[0025] As a preferred embodiment of this invention, the seedling guide tube 2 includes an upper section and a lower section. The upper section is fixedly located below the seedling delivery mechanism 1, and the seedling inlet is located at the top of the upper section. The lower section is located below the upper section, and the top of the lower section is hinged to the bottom of the upper section. The bottom of the lower section is hinged to the mounting box 6. The length of the lower section can be changed to adaptively adjust the length of the seedling guide tube 2 and the angle of the seedling outlet, and fix the seedling placement position to adapt to the positional changes of the planter 408 when the row spacing changes.

[0026] As a preferred embodiment of this invention, the bottom end of the upper section has a limiting protrusion, and the top end of the lower section has a spherical raceway. The limiting protrusion is placed inside the spherical raceway, and the spherical raceway can rotate relative to the limiting protrusion. Through the limiting fit between the limiting protrusion and the spherical raceway, a stable hinge connection is achieved between the top end of the lower section and the bottom end of the upper section.

[0027] In a preferred embodiment of this invention, a retainer 2022 is fixedly sleeved on the limiting protrusion. The retainer 2022 has several constraint grooves, and a ball 2021 is provided in the constraint groove. The ball 2021 can be constrained in the constraint groove and can rotate in the constraint groove. The ball 2021 can contact the inner wall of the spherical raceway, which can effectively improve the smoothness of the rotation of the lower section relative to the upper section and reduce friction and wear.

[0028] In a preferred embodiment of this invention, the lower section includes an inner sleeve 203 and an outer sleeve 204. The top end of the inner sleeve 203 is hinged to the bottom end of the upper section. The outer sleeve 204 is fitted over the inner sleeve 203 and can move up or down relative to the inner sleeve 203 to change the length of the lower section. The bottom end of the outer sleeve 204 is hinged to the mounting box 6 to adjust the angle of the seedling outlet.

[0029] As a preferred embodiment of this invention, the inner sleeve 203 has an annular limiting portion on the bottom outer wall and the outer sleeve 204 has an annular limiting flange at the top. The annular limiting portion can prevent the annular limiting flange from moving downward, thereby effectively preventing the outer sleeve 204 from separating from the inner sleeve 203.

[0030] In a preferred embodiment of this invention, the upper section includes a funnel section 201 and an installation section 202. The inner wall of the funnel section 201 gradually narrows inward from top to bottom. The funnel section 201 is positioned above the installation section 202. The bottom end of the funnel section 201 is fixedly connected to the top end of the installation section 202. The bottom end of the installation section 202 is hinged to the top end of the lower section to facilitate receiving seedlings delivered by the seedling delivery mechanism 1.

[0031] As a preferred embodiment of this invention, the adaptive seedling receiving and transporting mechanism with adjustable planting row spacing provided in this embodiment also includes two fixed frames 3, which correspond one-to-one with the mounting box 6. One end of the fixed frame 3 is fixedly connected to the mounting box 6, and the other end of the fixed frame 3 is hinged to the bottom end of the lower section. The structure is simple and easy to manufacture and use.

[0032] In a preferred embodiment of this invention, the driving device 4 includes a bidirectional lead screw module. The bidirectional lead screw module includes a bidirectional lead screw 404, a guide rail 403, two nuts, two sliders 405, two bearings, and two bearing seats 406. The bidirectional lead screw 404 has two threaded sections with opposite directions of rotation. Two nuts are respectively fitted onto the two threaded sections. The two sliders 405 are fixedly connected to the two nuts and are mounted on the guide rail 403. The two sliders 405 can move along the guide rail 403 as the bidirectional lead screw 404 rotates. The two bearing seats 406 are fixedly connected to the guide rail 403, with each bearing corresponding to one of the two bearing seats 406. The two ends of the lever 404 correspond one-to-one. The inner ring of the bearing is fixedly sleeved on one end of the double-acting screw 404, and the outer ring of the bearing is fixedly installed in the bearing seat 406. The two mounting boxes 6 are fixedly connected to the two sliders 405 respectively. The row spacing is infinitely and precisely adjusted through the double-acting screw module. When the double-acting screw 404 rotates, the two nuts drive the corresponding sliders 405 to move closer or further away from each other along the guide rail 403, thereby realizing that the two mounting boxes 6 move closer or further away from each other, so as to realize that the two planting components move closer or further away from each other, thus realizing the synchronous and equidistant adjustment of the transplanting row spacing. The adjustment process is smooth and precise, and can be completed quickly before operation, which greatly improves the adaptability of the transplanter to different crops and different planting patterns.

[0033] As a preferred embodiment of this invention, the drive device 4 further includes a support frame 5, a stepper motor 402, and a coupling 401. The guide rail 403 is fixedly mounted on the support frame 5. The housing of the stepper motor 402 is fixedly connected to the support frame 5. One end of the coupling 401 is fixedly connected to the power output shaft of the stepper motor 402, and the other end of the coupling 401 is fixedly connected to one end of the bidirectional lead screw 404. With the help of the position sensor, the electric stepless adjustment of the row spacing can be accurately realized.

[0034] As a preferred embodiment of this invention, the main functional units such as the seedling delivery mechanism 1, the seedling guide tube 2, and the planting components are all modularly designed. Each module has a relatively independent function and structure, and the modules are connected through standardized mechanical interfaces. This design makes the assembly, debugging, and maintenance of the equipment more convenient. Users can select modules of different specifications according to their actual needs, such as different numbers of planting component unit modules, seedling delivery mechanism 1 modules with different conveying capacities, etc., which enhances the versatility and scalability of the equipment. It can be easily assembled into single-row, double-row, or multi-row transplanters, and can also adapt to different seedling forms such as potted seedlings and bare-root seedlings by changing modules, thereby reducing manufacturing and maintenance costs.

[0035] As a preferred embodiment of this invention, the entire adaptive seedling receiving and conveying mechanism with adjustable planting row spacing provided in this embodiment is centrally coordinated and controlled by the control system. The seedling delivery, seedling guidance, row spacing adjustment, planting action, and depth control are automatically connected, reducing manual intervention and ensuring the consistency and efficiency of the operation rhythm. It is suitable for large-scale, high-speed transplanting operations, with a high degree of automation and high operation efficiency.

[0036] In summary, the adaptive seedling receiving and conveying mechanism with adjustable planting row spacing provided in this embodiment is flexible, precise, and reliable, and can achieve efficient and high-quality planting. It effectively overcomes the shortcomings of existing technologies and has good application prospects.

[0037] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. An adaptive seedling receiving and conveying mechanism with adjustable planting row spacing, characterized in that: Includes a drive unit, two seedling guide tubes, two mounting boxes, and two planting components; The seedling guide tube corresponds one-to-one with the mounting box. The top of the seedling guide tube is fixedly positioned below the seedling delivery mechanism. The top of the seedling guide tube has a seedling receiving port for receiving seedlings delivered by the seedling delivery mechanism. The bottom of the seedling guide tube is positioned below the top of the seedling guide tube and can move laterally relative to the top of the seedling guide tube to move closer to or further away from the top of the seedling guide tube. The bottom of the seedling guide tube is connected to the mounting box and has a seedling outlet. The seedling guide tube has a seedling guiding channel that connects the seedling outlet and the seedling receiving port. The planting components correspond one-to-one with the installation box. The planting components are set on the installation box. The planting components include a planter. The planter can be moved to the seedling receiving position. When the planter is placed at the seedling receiving position, it can receive the seedlings dropped from the seedling outlet. The two mounting boxes can move closer to or further away from each other, and the drive device is connected to the two mounting boxes in a driving connection, providing power for the two mounting boxes to move closer to or further away from each other.

2. The adaptive seedling receiving and conveying mechanism with adjustable planting row spacing according to claim 1, characterized in that: The seedling guide tube includes an upper section and a lower section. The upper section is fixedly installed below the seedling delivery mechanism. The seedling receiving port is located at the top of the upper section. The lower section is located below the upper section. The top of the lower section is hinged to the bottom of the upper section. The bottom of the lower section is hinged to the mounting box. The length of the lower section can be changed.

3. The adaptive seedling receiving and conveying mechanism with adjustable planting row spacing according to claim 2, characterized in that: The upper section has a limiting protrusion at its bottom end, and the lower section has a spherical raceway at its top end. The limiting protrusion is placed inside the spherical raceway, and the spherical raceway can rotate relative to the limiting protrusion.

4. The adaptive seedling receiving and conveying mechanism with adjustable planting row spacing according to claim 3, characterized in that: A retainer is fixedly sleeved on the limiting protrusion. The retainer has several constraint grooves. A ball is provided in the constraint groove. The ball can be constrained in the constraint groove and can rotate in the constraint groove. The ball can contact the inner wall of the spherical raceway.

5. The adaptive seedling receiving and conveying mechanism with adjustable planting row spacing according to claim 2, characterized in that: The lower section includes an inner sleeve and an outer sleeve. The top end of the inner sleeve is hinged to the bottom end of the upper section. The outer sleeve is fitted over the inner sleeve and can move up or down relative to the inner sleeve. The bottom end of the outer sleeve is hinged to the mounting box.

6. The adaptive seedling receiving and conveying mechanism with adjustable planting row spacing according to claim 5, characterized in that: The inner sleeve has an annular limiting part on the outer wall at the bottom end, and the outer sleeve has an annular limiting flange at the top end. The annular limiting part can prevent the annular limiting flange from moving downward.

7. The adaptive seedling receiving and conveying mechanism with adjustable planting row spacing according to claim 2, characterized in that: The upper section includes a funnel section and an installation section. The inner wall of the funnel section gradually tapers inward from top to bottom. The funnel section is placed above the installation section. The bottom end of the funnel section is fixedly connected to the top end of the installation section. The bottom end of the installation section is hinged to the top end of the lower section.

8. The adaptive seedling receiving and conveying mechanism with adjustable planting row spacing according to claim 2, characterized in that: It also includes two fixing brackets, each corresponding to one of the mounting boxes. One end of each fixing bracket is fixedly connected to the mounting box, and the other end of each fixing bracket is hinged to the bottom end of the lower section.

9. The adaptive seedling receiving and conveying mechanism with adjustable planting row spacing according to claim 1, characterized in that: The driving device includes a bidirectional lead screw module, which comprises a bidirectional lead screw, a guide rail, two nuts, two sliders, two bearings, and two bearing seats. The bidirectional lead screw has two threaded sections with opposite directions of rotation. Two nuts are respectively fitted onto the two threaded sections. The two sliders are respectively fixedly connected to the two nuts and are mounted on the guide rail, allowing them to move along the guide rail as the bidirectional lead screw rotates. The two bearing seats are fixedly connected to the guide rail, with each bearing corresponding to one end of the bidirectional lead screw. The inner ring of each bearing is fixedly fitted onto one end of the bidirectional lead screw, and the outer ring of each bearing is fixedly mounted inside the bearing seat. Two mounting boxes are respectively fixedly connected to the two sliders.

10. The adaptive seedling receiving and conveying mechanism with adjustable planting row spacing according to claim 9, characterized in that: The drive device also includes a support frame, a stepper motor, and a coupling. The guide rail is fixedly mounted on the support frame. The housing of the stepper motor is fixedly connected to the support frame. One end of the coupling is fixedly connected to the power output shaft of the stepper motor, and the other end of the coupling is fixedly connected to one end of the bidirectional lead screw.

Images