Natural rubber sand bed seedling raising remote control seeder

Abstract

The application discloses a natural rubber sand bed seedling raising remote control type seeding machine, and particularly relates to the technical field of seeding machines, which comprises an outer frame, a seed box arranged in the inner portion of the outer frame, a remote control seed dropping adjusting mechanism arranged on the inner wall of the outer frame, a seed metering mechanism installed at the inner portion of the outer frame, and a cross-bed walking chassis installed at the bottom end of the outer frame. The natural rubber sand bed seedling raising special precision seeder of the application rides on the sand bed and travels on the two sides of the sand bed without contacting the sand bed, so that the flatness of the sand bed is not damaged, and the customized profiling seeding roller does not damage the seeds. The device fills the gap of special equipment in the industry, adapts to the million-level seedling production demand of large-scale rubber plantations, and solves the problem that the existing seeding machines cannot be applied due to the large particle size and irregular shape of rubber seeds, the difficulty in meeting the high-density requirement, and the difficulty in adapting to the narrow and soft environment of the facility seedbed.

Description

Technical Field

[0001] This invention relates to the field of seeding technology, and more specifically, to a remote-controlled seeder for natural rubber sand bed seedling cultivation. Background Technology

[0002] Natural rubber is a vital strategic resource for my country. In recent years, influenced by factors such as the aging and renewal of rubber plantations and the increasing pressure of controlling South American leaf blight, the demand for high-quality seedlings for the upgrading of rubber plantations in China has continued to rise. Taking the rubber-growing areas of Yunnan Province as an example, the area of ​​aging rubber plantations that needs to be renewed each year reaches hundreds of thousands of acres, corresponding to a demand for millions of rubber seedlings. The production of natural rubber seedlings relies entirely on sand bed seedling cultivation: rubber seeds must be germinated in seedbeds covered with sand, and after germination and seedling development, they are then transplanted to nurseries or open fields. Sand bed seedling cultivation is the first crucial link in the rubber planting industry chain, and the yield and quality of seedlings directly affect the progress of plantation establishment and the subsequent rubber production benefits.

[0003] Given that natural rubber seed seedling cultivation in sand beds relies entirely on manual sowing, existing technologies suffer from problems such as extremely high labor intensity, poor uniformity, low efficiency, and easy damage to the sand bed. Existing sowing machinery is unsuitable for the large, irregular shape of rubber seeds, cannot meet high-density requirements, and is ill-suited to the small, soft environment of facility seedbeds. Therefore, this invention aims to provide a dedicated automatic sowing machine to replace the high-intensity manual bending and sowing work, achieving high-density, uniform, and precise sowing, while adapting to the special environment of sand beds and ensuring sowing quality and seedling consistency. Summary of the Invention

[0004] To address the aforementioned problems in the prior art, the present invention provides the following technical solution: a remote-controlled seeder for natural rubber sand bed seedling cultivation, comprising an outer frame, wherein a seed box is provided inside the outer frame; The remote-controlled seed-dropping adjustment mechanism is located on the inner wall of the outer frame; The seed metering mechanism is installed inside the outer frame. The cross-bed traveling chassis is installed at the bottom of the outer frame; The cross-bed walking chassis is used to move the outer frame across the sand bed, and the height of the outer frame can be remotely adjusted by the remote seed dropping adjustment mechanism. The seed dispensing mechanism is used for sowing natural rubber seeds.

[0005] In a preferred embodiment, the remote-controlled seed-dropping adjustment mechanism includes: A geared motor is installed on one side of the outer wall of the seed box, and the output end of the geared motor is connected to a gear shaft. A chain is meshed with a gear shaft, and a transmission gear shaft is meshed with the inner wall of the chain at a position away from the gear shaft; A transmission box is mounted on one end of a transmission gear shaft. The transmission box is fixedly connected to the outer frame. A threaded rod is driven on one end of the transmission box, and a linkage gear shaft is driven on the other end of the transmission box. The lifting block is rotatably connected to the outer wall of the threaded rod, and the lifting block is fixedly connected to the seed box; A chain belt is meshed and driven to the outer wall of the linkage gear shaft. A drive gear is meshed and driven to the inner wall of the chain belt at a position away from the linkage gear shaft. A positioning shaft is fixed to the inner wall of the drive gear. The outer frame is rotatably connected to the positioning shaft. The controller is installed on the outer wall of the outer frame. The geared motor is electrically connected to the controller. An emergency stop button, a control panel, and an adjustment switch are provided on one side of the controller. The adjustment switch and control panel are all electrically connected to the controller. Two sets of sliding shafts are fixed on the other side of the outer wall of the seed box. Each set of sliding shafts has a guide rail on its outer wall. The guide rail is used to guide the sliding shaft to slide. The guide rail is fixedly connected to the outer frame.

[0006] In a preferred embodiment, the center point of the gear shaft is higher than the center point of the transmission gear shaft, and the transmission gear shaft and the linkage gear shaft are coaxially arranged.

[0007] In a preferred embodiment, the center point of the linkage gear shaft is higher than the center point of the positioning shaft, and the outer diameter of the linkage gear shaft is larger than the outer diameter of the drive gear. The chain belt and chain are arranged symmetrically about the transmission box.

[0008] In a preferred embodiment, the two lifting blocks are symmetrically arranged about the seed box, and the vertical cross-sectional shape of the two lifting blocks is L-shaped.

[0009] In a preferred embodiment, the seed dispensing mechanism includes a limiting hopper, a seeding roller, multiple feed holes, a first drive shaft, a bearing seat, a sleeve frame, a first drive motor, and a linkage shaft; The bottom end of the outer frame is connected to a discharge hopper, the limiting hopper is fixedly connected to the bottom end of the discharge hopper, and the sowing roller is rotatably installed on the inner wall of the discharge hopper. Multiple material holes are formed on the outer wall of the seeding roller. The first drive shaft is coaxially fixedly connected to one end of the seeding roller. The bearing seat is installed on the outer wall of the first drive shaft and is fixedly connected to the discharge hopper. The bearing seat is used to position the rotation of the first drive shaft. The sleeve frame is fixedly installed at one end of the discharge hopper. A first drive motor is installed at one end of the sleeve frame. The output end of the first drive motor is connected to a linkage shaft. The linkage shaft is fixedly connected to the sowing roller.

[0010] In a preferred embodiment, the center point of the first drive shaft is coaxial with the center point of the seeding roller, and the plurality of material holes are arranged in a circumferential distribution.

[0011] In a preferred embodiment, the center point of the linkage shaft and the center point of the first transmission shaft are on the same horizontal line; The first drive motor is fixedly connected to the discharge hopper; A guide strip is fixed to the inner wall of the outer frame and above the sowing roller. The guide strip is used to guide the rubber seeds onto the sowing roller.

[0012] In a preferred embodiment, the crossbed traveling chassis includes: Two sets of second drive motors are installed at the top of the inner wall of the outer frame. Each set of second drive motors has a second drive shaft connected to both output ends. A bevel gear transmission box is installed at one end of the second drive shaft. The output end of the bevel gear transmission box is fixedly connected to a drive wheel, which is used to drive the gears to move on the sand bed.

[0013] The technical effects and advantages of the present invention.

[0014] 1. This invention adopts a cross-bed walking chassis structure, with the drive wheels straddling the ground on both sides of the sand bed. The whole machine has zero contact with the sand bed, completely avoiding crushing and damaging the soft sand bed surface. Operators do not need to enter the sand bed to step on it. The flatness of the sand bed is maintained throughout the process. At the same time, it is equipped with pure electric clean power, zero emissions, and is suitable for greenhouse seedling cultivation scenarios, creating an ideal microenvironment for seed germination that is breathable and clean.

[0015] 2. This invention adopts a remote-controlled seed dropping adjustment mechanism. The seed box is raised and lowered as a whole by a geared motor driving the threaded rod. The distance between the seed dropping opening and the sand surface can be adjusted remotely and precisely. The seed dropping height is consistent throughout the process, and the seed dropping point deviation is controlled within a very small range. It can also be adapted to different seeding requirements by adjusting the seed metering speed. The entire operation does not require manual bending over. A single person can complete the entire process by holding the remote control, which greatly reduces labor intensity.

[0016] 3. This invention employs a seed-dispensing roller with contoured material holes, featuring custom-designed holes for large-diameter, irregularly shaped natural rubber seeds. Each hole is filled with only a single seed without damaging the seed coat, achieving a stable seed density of 900 seeds / m². 2 High-density precision sowing is perfectly suited to the dense planting requirements of rubber sand bed seedling cultivation, avoiding the problems of overly dense or sparse sowing caused by manual sowing from the root, and significantly improving the uniformity of seedling emergence.

[0017] 4. This invention fills the gap in the lack of dedicated sowing equipment for natural rubber sand bed seedling cultivation for the first time, completely solving the pain point of relying entirely on manual labor in this field. Even taking into account the auxiliary time spent on adding seeds and relocating the site, the actual effective operating efficiency is still far higher than that of traditional manual labor, greatly reducing labor costs and meeting the production needs of millions of seedlings for large-scale rubber plantation renewal. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the remote-controlled seeder for natural rubber sand bed seedling cultivation according to the present invention.

[0019] Figure 2 This is a schematic diagram of the partial structure of the outer frame and seed box of the present invention.

[0020] Figure 3 This is a schematic diagram of the structure of the remote-controlled seeder for natural rubber sand bed seedling cultivation according to the present invention, viewed from below.

[0021] Figure 4 This is a top view schematic diagram of the remote-controlled seeder for natural rubber sand bed seedling cultivation according to the present invention.

[0022] Figure 5 This is a partial structural diagram showing the connection between the outer frame and the second drive motor of the present invention.

[0023] Figure 6 This is a side view of the remote-controlled seeder for natural rubber sand bed seedling cultivation according to the present invention.

[0024] Figure 7 For the present invention Figure 6 Enlarged structural diagram at point A in the middle.

[0025] Figure 8 This is a partial structural diagram of the controller and emergency stop button of the present invention.

[0026] The attached diagram is labeled as follows: 1. Outer frame; 2. Seed box; 3. Discharge hopper; 4. Gear motor; 5. Gear shaft; 6. Chain; 7. Transmission gear shaft; 8. Transmission box; 9. Linkage gear shaft; 10. Threaded rod; 11. Lifting block; 12. Chain belt; 13. Drive gear; 14. Positioning shaft; 15. Limiting hopper; 16. Seeding roller; 17. Material hole; 18. First transmission shaft; 19. Bearing seat; 20. Sleeve frame; 21. First transmission motor; 22. Linkage shaft; 23. Guide bar; 24. Second transmission motor; 25. Second transmission shaft; 26. Bevel gear transmission box; 27. Drive wheel; 28. Sliding shaft; 29. ​​Guide rail; 30. Controller; 31. Emergency stop button; 32. Control panel; 33. Adjustment switch. Detailed Implementation

[0027] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings and specific embodiments.

[0028] Example 1: For reference Figure 1 - Figure 8 The remote-controlled seeder for natural rubber sand bed seedling cultivation shown includes an outer frame 1, with a seed box 2 inside the outer frame 1; a remote-controlled seed dropping adjustment mechanism set on the inner wall of the outer frame 1; a seed metering mechanism installed inside the outer frame 1; and a cross-bed traveling chassis installed at the bottom end of the outer frame 1.

[0029] The operating principle of this technology is as follows: the cross-bed traveling chassis is used to move the outer frame 1 across the sand bed. The height of the outer frame 1 is then remotely adjusted via a remote seed-dropping adjustment mechanism. The seed-dispensing mechanism is used for sowing natural rubber seeds, ensuring the traveling wheels are positioned on either side of the sand bed. Combined with wireless remote control, this achieves zero contact between the machine body and the sand bed, preventing damage to the bed surface. The remote seed-dropping adjustment mechanism is used to remotely adjust the height of the seed box 2 and the seed-dispensing mechanism, making the distance between the seed-dropping opening and the sand surface adjustable to ensure precise and consistent seed placement. The seed-dispensing mechanism is used for sowing natural rubber seeds, achieving single-seed extraction through the contoured material holes 17 on the surface of the seeding roller 16, meeting a seed collection rate of 900 seeds / m². 2 High density requirements without damaging the seed coat; the three factors work together to fill the gap in mechanized rubber sand bed seedling cultivation, and significantly improve the uniformity of seedling emergence.

[0030] Example 2: For reference Figure 1 - Figure 8As shown, the remote-controlled seed-dropping adjustment mechanism includes: a reduction motor 4, installed on one side of the outer wall of the seed box 2, with a gear shaft 5 drivingly connected to the output end of the reduction motor 4; a chain 6, meshing with the gear shaft 5, with a transmission gear shaft 7 meshing with the inner wall of the chain 6 away from the gear shaft 5; a transmission box 8, driven and installed at one end of the transmission gear shaft 7, fixedly connected to the outer frame 1, with a threaded rod 10 drivingly installed at one end of the transmission box 8, and a linkage gear shaft 9 drivingly connected to the other end of the transmission box 8; a lifting block 11, rotatably connected to the outer wall of the threaded rod 10, and fixedly connected to the seed box 2; and a chain belt 12, meshing and drivingly connected to the outer wall of the linkage gear shaft 9. A drive gear 13 is meshed with the inner wall of the chain belt 12, away from the linkage gear shaft 9. A positioning shaft 14 is fixed to the inner wall of the drive gear 13, and the outer frame 1 is rotatably connected to the positioning shaft 14. A controller 30 is installed on the outer wall of the outer frame 1. The reduction motor 4 is electrically connected to the controller 30. One side of the controller 30 is provided with an emergency stop button 31, a control panel 32, and an adjustment switch 33. The adjustment switch 33 and the control panel 32 are both electrically connected to the controller 30. Two sets of sliding shafts 28 are fixed on the other side of the outer wall of the seed box 2. Each set of sliding shafts 28 has a guide rail 29 on its outer wall. The guide rail 29 is used to guide the sliding of the sliding shaft 28 and is fixedly connected to the outer frame 1. The center point of the gear shaft 5 is higher than the center point of the transmission gear shaft 7. The transmission gear shaft 7 and the linkage gear shaft 9 are coaxially arranged. The center point of the linkage gear shaft 9 is higher than the center point of the positioning shaft 14, and the outer diameter of the linkage gear shaft 9 is larger than the outer diameter of the drive gear 13; the chain belt 12 and the chain 6 are symmetrically arranged about the transmission box 8. The two lifting blocks 11 are symmetrically arranged about the seed box 2, and the vertical cross-sectional shape of the two lifting blocks 11 is L-shaped.

[0031] The operating principle of this technology is as follows: The operator can stand at one end of the sand bed or at the other end of the field and wirelessly connect to the controller 30 via remote control. The machine's control panel 32 and adjustment switches 33 allow for remote control of forward / reverse / stop functions. Pressing the emergency stop button 31 will quickly and completely stop the entire machine. Furthermore, remote control operation eliminates the need for operators to enter the sand bed area, completely avoiding damage to the sand bed's flatness caused by human foot traffic. The controller 30 remotely starts the reduction motor 4, which drives the gear shaft 5. The gear shaft 5 then drives the chain 6, which in turn drives the transmission gear shaft 7. The transmission gear shaft 7 drives the transmission box 8 to mesh and transmit power, causing the transmission box 8 to drive the threaded rod 10 to mesh and rotate. After the threaded rod 10 meshes inside the transmission box 8, it moves upward. The threaded rod 10 rotates inside the lifting block 11 and pushes the lifting block 11 upward. The lifting block 11 causes the seed box 2 to move upward inside the outer frame 1. The seed box 2 drives the sliding shaft 28 to move upward. The sliding shaft 28 slides upward along the inner wall of the guide rail 29. At the same time, the outer frame 1 supports the guide rail 29. The seed box 2 drives the discharge bucket 3 to move upward. The height of the outer frame 1 from the sand bed can be adjusted to adapt to different sand bed surface heights.

[0032] Example 3: For reference Figure 3 - Figure 4 As shown, the seed dispensing mechanism includes a limiting hopper 15, a seeding roller 16, multiple material holes 17, a first drive shaft 18, a bearing seat 19, a frame 20, a first drive motor 21, and a linkage shaft 22. The bottom end of the outer frame 1 is connected to the discharge hopper 3, the limiting hopper 15 is fixedly connected to the bottom end of the discharge hopper 3, and the seeding roller 16 is rotatably mounted on the inner wall of the discharge hopper 3. Multiple material holes 17 are all opened on the outer wall of the seeding roller 16. The first drive shaft 18 is coaxially fixedly connected to one end of the seeding roller 16. The bearing seat 19 is mounted on the outer wall of the first drive shaft 18 and is fixedly connected to the discharge hopper 3. The bearing seat 19 is used to position the rotation of the first drive shaft 18. The frame 20 is fixedly mounted on one end of the discharge hopper 3. The first drive motor 21 is installed on one end of the frame 20. The output end of the first drive motor 21 is driven and connected to the linkage shaft 22. The linkage shaft 22 is fixedly connected to the seeding roller 16. The center point of the first drive shaft 18 is coaxial with the center point of the sowing roller 16, and the multiple material holes 17 are arranged in a circular distribution. The center point of the linkage shaft 22 is on the same horizontal line as the center point of the first drive shaft 18; the first drive motor 21 is fixedly connected to the discharge hopper 3; a guide strip 23 is fixed on the inner wall of the outer frame 1 above the sowing roller 16, and the guide strip 23 is used to guide the rubber seeds onto the sowing roller 16.

[0033] The principle of this technology is as follows: natural rubber seeds are put into the seed box 2 and guided to the guide bar 23. They then enter the multiple material holes 17 on the sowing roller 16 for placement. The discharge hopper 3 supports the frame 20, which in turn supports the first drive motor 21. The first drive motor 21 drives the linkage shaft 22 to rotate inside the frame 20. At the same time, the linkage shaft 22 drives the sowing roller 16 to rotate. The sowing roller 16 drives the first drive shaft 18 to rotate inside the bearing seat 19. Simultaneously, the sowing roller 16 drives the multiple material holes 17 to rotate. The natural rubber seeds in the multiple material holes 17 are driven to rotate and fall to the sand bed position. In this way, the seed metering device is the core component for achieving high-density and uniform sowing. In response to the characteristics of rubber seeds with large particle size of 2-3 cm and irregular shape, multiple feeding holes 17 are designed with shaped holes that are adapted to the shape of rubber seeds. The size and shape of the shaped holes are designed based on the three-dimensional dimensions of rubber seeds to ensure that only a single seed is filled into each hole. The first drive motor 21 is driven independently. The speed of the first drive motor 21 can be adjusted by adjusting the switch 33 to match different operating speeds and sowing density requirements.

[0034] Example 4: For reference Figure 1 - Figure 5 As shown, the cross-bed traveling chassis includes: two sets of second drive motors 24, both installed at the top of the inner wall of the outer frame 1. Each set of second drive motors 24 has two output ends connected to a second drive shaft 25. One end of the second drive shaft 25 is connected to a bevel gear transmission box 26. The output end of the bevel gear transmission box 26 is fixedly connected to a drive wheel 27, which is used to drive the walking on the sand bed.

[0035] The principle of this technology is that the distance between the two sets of second drive motors 24 ensures that the two sets of drive wheels 27 are positioned at the sand bed location. After the second drive motors 24 are started, they can drive the two second drive shafts 25, which in turn drive the two bevel gear transmission boxes 26. The two bevel gear transmission boxes 26 can then drive the two drive wheels 27 to move at the sand bed location. The bottom frame of the outer frame 1 is wider than the sand bed, allowing the two sets of drive wheels 27 to straddle the sand bed. The entire machine moves on the hardened ground or tracks on both sides of the sand bed, avoiding the weight of the machine and the walking mechanism from crushing the sand bed surface. It is powered by a bottom battery for continuous operation.

[0036] The overall workflow of a remote-controlled seeder for natural rubber sand bed seedling cultivation.

[0037] Step 1: Preparation and Positioning of the Seeder: Place the seeder at the starting end of the sand bed, ensuring that the two sets of drive wheels 27 at the bottom of the outer frame 1 are positioned on the hardened ground or tracks on both sides of the sand bed, so that the entire machine straddles the sand bed, achieving zero contact between the machine and the sand bed surface. Start Walking: Remotely start the two sets of second drive motors 24 via the remote control or control panel 32. The second drive motors 24 drive the second drive shaft 25 to rotate, and the power is transmitted to the drive wheels 27 via the bevel gear transmission box 26, driving the machine to move smoothly forward or backward along both sides of the sand bed.

[0038] Step 2: Remote Adjustment of Seed Drop Height. Remote Control: The operator stands at one end of the sand bed or at the edge of the field and wirelessly connects to the controller 30 via remote control. Based on the current surface height of the sand bed, the operator operates the adjustment switch 33 or the control panel 32 to issue a height adjustment command. Lifting Action: The controller 30 starts the reduction motor 4, which drives the gear shaft 5 to rotate, driving the transmission gear shaft 7 and transmission box 8 via the chain 6. Seed Box and Seed Discharge Inlet Move Up in Linkage: The transmission box 8 drives the threaded rod 10 to rotate and move upwards. The threaded rod 10 pushes the lifting block 11, thereby causing the entire seed box 2 to rise vertically within the outer frame 1 along the guide rail 29 and sliding shaft 28. Simultaneously, the seed box 2 causes the discharge hopper 3 and the seed discharging mechanism below to rise, thus precisely adjusting the distance between the seed drop inlet and the sand surface to ensure accurate and consistent seed drop points. Emergency Stop: In case of an emergency, the emergency stop button 31 can be pressed immediately, and the machine will quickly stop all operations.

[0039] Step 3: High-density seeding and seed supply and guidance: Natural rubber seeds are placed into the seed box 2. The seeds are guided through the seed box to the guide strip 23 and then guided by the guide strip 23 to the top of the sowing roller 16. Single seed picking: The surface of the sowing roller 16 has multiple contoured material holes 17 that match the shape of the rubber seeds. When the first drive motor 21 drives the sowing roller 16 to rotate through the linkage shaft 22, the material holes 17 rotate with the roller, and each hole is filled with and carries only one seed. Precise seed placement: As the sowing roller 16 continues to rotate, when the material hole 17 carrying the seed rotates to the bottom, the seed is naturally released under gravity and falls precisely onto the sand bed surface below. The speed of the first drive motor 21 can be controlled by adjusting the switch 33 to match the travel speed, achieving 900 seeds / m². 2 It meets the requirements of high-density sowing without damaging the seed coat.

[0040] Step 4: Collaborative Operation and Sowing Completion, Machine Collaborative Operation: While the machine's cross-bed traveling chassis continues to move, the remote-controlled seed-dropping adjustment mechanism maintains the pre-adjusted seed box height, and the seed-dispensing mechanism continuously and evenly sows individual seeds into the sand bed. Completion of Operation: After the machine reaches the end of the sand bed, the second drive motor 24 and the first drive motor 21 are stopped via remote control, completing the sowing operation for that sand bed. The machine can then be moved to the next sand bed, and the above process can be repeated.

[0041] This invention pioneers a zero-contact operation mode for sand beds, completely solving the problem of crushing and damage: It employs a cross-bed walking chassis structure, with two sets of drive wheels 27 straddling the hardened ground or tracks on both sides of the sand bed. The entire machine body achieves zero contact with the sand bed surface, fundamentally preventing the walking mechanism from crushing and damaging the soft sand bed. Simultaneously, operators can stand at one end of the sand bed or at the edge of the field and wirelessly connect to the controller 30 via remote control to complete the entire operation. There is no need to enter the sand bed area and tread on it, ensuring the sand bed's flatness remains intact throughout the process. This provides an ideal microenvironment for rubber seed germination—breathable, clean, and flat—effectively guaranteeing uniform seedling emergence.

[0042] Remotely controlled precise adjustment of seed dropping height to adapt to different sand bed conditions: This invention is equipped with a remotely controlled seed dropping adjustment mechanism. The controller 30 remotely starts the reduction motor 4, which drives the transmission box 8 through the gear shaft 5, chain 6, and transmission gear shaft 7. This drives the threaded rod 10 to rotate and rise. The threaded rod 10 pushes the lifting block 11, causing the seed box 2 to slide vertically along the guide rail 29 and sliding shaft 28. Simultaneously, it drives the discharge hopper 3 and the sowing roller 16 to rise and fall, realizing remote stepless adjustment of the distance between the seed dropping port and the sand surface. This ensures that the seed dropping point deviation is controlled within a very small range under different sand bed surface heights, resulting in good consistency in sowing depth.

[0043] The conformal seeding system enables precise single-seed sowing, meeting the requirements of high-density agronomy. The sowing roller 16 of this invention has conformal seed holes 17 on its surface, adapted to the irregular shape of natural rubber seeds with a large particle size of 2-3 cm. The size and shape of the seed holes 17 are designed based on the three-dimensional dimensions of rubber seeds, ensuring that only a single seed is inserted into each hole without damaging the seed coat. It is independently driven by the first drive motor 21, and the rotation speed is adjustable via the regulating switch 33, stably meeting a sowing rate of 900 seeds / m². 2 The high-density sowing requirement avoids the problems of overly dense or sparse sowing caused by manual sowing, and significantly improves the uniformity of seedling emergence.

[0044] Filling an industry gap and significantly improving production efficiency and reducing labor costs: This invention provides a dedicated automated sowing device for the field of natural rubber sand bed seedling cultivation for the first time, completely changing the traditional operation method that relies entirely on manual bending and sowing. A single person can complete the entire process with a remote control, greatly reducing labor intensity. Even including the time spent on adding seeds and relocating, the effective operation efficiency is still far higher than that of manual labor, which is suitable for the urgent production needs of millions of seedlings for large-scale rubber plantation renewal.

[0045] The above description is only a preferred embodiment of the present invention and does not constitute any limitation on the present invention. Modifications, equivalent substitutions, etc., made within the scope of the technical solution of the present invention should all fall within the protection scope of the present invention.

Claims

1. A remote-controlled seeder for natural rubber sand bed seedling cultivation, comprising an outer frame (1), characterized in that: The outer frame (1) is equipped with a seed box (2) inside; The remote-controlled seed-dropping adjustment mechanism is located on the inner wall of the outer frame (1); The seeding mechanism is installed inside the outer frame (1); A cross-bed traveling chassis is installed at the bottom end of the outer frame (1); The cross-bed walking chassis is used to move the outer frame (1) across the sand bed, and the height of the outer frame (1) is adjusted remotely by the remote seed dropping adjustment mechanism. The seed dropping mechanism is used for sowing natural rubber seeds.

2. The remote-controlled seeder for natural rubber sand bed seedling cultivation according to claim 1, characterized in that: The remote-controlled seed-dropping adjustment mechanism includes: A geared motor (4) is installed on one side of the outer wall of the seed box (2), and the output end of the geared motor (4) is connected to a gear shaft (5). A chain (6) is meshed with a gear shaft (5), and a transmission gear shaft (7) is meshed with the inner wall of the chain (6) at a position away from the gear shaft (5). The transmission box (8) is installed at one end of the transmission gear shaft (7). The transmission box (8) is fixedly connected to the outer frame (1). A threaded rod (10) is installed at one end of the transmission box (8), and a linkage gear shaft (9) is connected at the other end of the transmission box (8). The lifting block (11) is rotatably connected to the outer wall of the threaded rod (10), and the lifting block (11) is fixedly connected to the seed box (2); The chain belt (12) is meshed and connected to the outer wall of the linkage gear shaft (9). The inner wall of the chain belt (12) and at a position away from the linkage gear shaft (9) are meshed and connected to the drive gear (13). The inner wall of the drive gear (13) is fixed with a positioning shaft (14). The outer frame (1) is rotatably connected to the positioning shaft (14). The controller (30) is installed on the outer wall of the outer frame (1). The geared motor (4) is electrically connected to the controller (30). The controller (30) is provided with an emergency stop button (31), a control panel (32) and an adjustment switch (33) on one side. The adjustment switch (33) and the control panel (32) are both electrically connected to the controller (30). Two sets of sliding shafts (28) are fixed on the other side of the outer wall of the seed box (2). Each set of sliding shafts (28) has a guide rail (29) on its outer wall. The guide rail (29) is used to guide the sliding shaft (28) to slide. The guide rail (29) is fixedly connected to the outer frame (1).

3. The remote-controlled seeder for natural rubber sand bed seedling cultivation according to claim 2, characterized in that: The center point of the gear shaft (5) is higher than the center point of the transmission gear shaft (7), and the transmission gear shaft (7) and the linkage gear shaft (9) are coaxially arranged.

4. The remote-controlled seeder for natural rubber sand bed seedling cultivation according to claim 2, characterized in that: The center point of the linkage gear shaft (9) is higher than the center point of the positioning shaft (14), and the outer diameter of the linkage gear shaft (9) is greater than the outer diameter of the drive gear (13). The chain belt (12) and chain (6) are arranged symmetrically about the transmission box (8).

5. The remote-controlled seeder for natural rubber sand bed seedling cultivation according to claim 2, characterized in that: The two lifting blocks (11) are symmetrically arranged about the seed box (2), and the vertical cross-sectional shape of the two lifting blocks (11) is L-shaped.

6. The remote-controlled seeder for natural rubber sand bed seedling cultivation according to claim 1, characterized in that: The seed dispensing mechanism includes a limiting hopper (15), a seeding roller (16), multiple material holes (17), a first drive shaft (18), a bearing seat (19), a sleeve (20), a first drive motor (21), and a linkage shaft (22). The bottom end of the outer frame (1) is connected to the discharge hopper (3), the limiting hopper (15) is fixedly connected to the bottom end of the discharge hopper (3), and the sowing roller (16) is rotatably installed on the inner wall of the discharge hopper (3). Multiple material holes (17) are opened on the outer wall of the seeding roller (16). The first drive shaft (18) is coaxially fixedly connected to one end of the seeding roller (16). The bearing seat (19) is installed on the outer wall of the first drive shaft (18). The bearing seat (19) is fixedly connected to the discharge hopper (3). The bearing seat (19) is used to position the first drive shaft (18) to rotate. The frame (20) is fixedly installed at one end of the discharge hopper (3). A first drive motor (21) is installed at one end of the frame (20). The output end of the first drive motor (21) is connected to a linkage shaft (22). The linkage shaft (22) is fixedly connected to the sowing roller (16).

7. The remote-controlled seeder for natural rubber sand bed seedling cultivation according to claim 6, characterized in that: The center point of the first drive shaft (18) is coaxial with the center point of the seeding roller (16), and the multiple material holes (17) are arranged in a circumferential distribution.

8. The remote-controlled seeder for natural rubber sand bed seedling cultivation according to claim 6, characterized in that: The center point of the linkage shaft (22) and the center point of the first transmission shaft (18) are on the same horizontal line; The first drive motor (21) is fixedly connected to the discharge hopper (3); A guide strip (23) is fixed on the inner wall of the outer frame (1) and above the seeding roller (16). The guide strip (23) is used to guide the rubber seeds onto the seeding roller (16).

9. The remote-controlled seeder for natural rubber sand bed seedling cultivation according to claim 1, characterized in that: The cross-bed traveling chassis includes: Two sets of second drive motors (24) are installed at the top of the inner wall of the outer frame (1). Each set of second drive motors (24) has a second drive shaft (25) connected to both output ends. A bevel gear transmission box (26) is installed at one end of the second drive shaft (25). The output end of the bevel gear transmission box (26) is fixedly connected to a drive wheel (27), which is used to drive the vehicle to move on the sand bed.

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