Sapling seeding device for forestry sand prevention and control

Abstract

The utility model discloses a forestry desertification prevention and control sapling seeding device, which comprises a base, a seeding mechanism is arranged on the base, the seeding mechanism comprises a seed storage box, a plurality of groups of conical rods, a shifting plate and a seed leakage hopper, the seed storage box is arranged on the top surface of the base, the conical rods are arranged at the front end of the base, the shifting plate is arranged at the rear end of the base, and the seed leakage hopper is arranged on the base. The seed leakage hopper is arranged on the bottom surface of the base, the quantity control mechanism is connected between the seed leakage hopper and the base, the quantity control mechanism comprises an outer sleeve, an adjusting sleeve, a screw rod, a transmission sleeve, an inclined sliding block and a quantity control plate, the outer sleeve is mounted on the bottom surface of the base and is communicated with the seed storage box, and the adjusting sleeve is rotationally mounted on the bottom surface of the outer sleeve and is connected with the seed leakage hopper; the screw rod is mounted in the adjusting sleeve, and the transmission sleeve is slidably mounted in the outer sleeve and is in threaded connection with the screw rod, so that the technical problems that in the background technology, the seeding process becomes complicated, the efficiency is low, and the seeding quantity is difficult to accurately adjust are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of forestry sand prevention and control, and more specifically, to a seedling sowing device for forestry sand prevention and control. Background Art

[0002] In the existing technology, in the forestry practice of sand control and sand fixation, the loading and distribution of seeds is a key link. Without an effective sowing mechanism, seeds cannot be properly loaded and stored, which will make the sowing process complicated and inefficient. Uneven seed distribution will lead to too high sowing density in some soil areas and too low sowing density in other areas. This imbalance will affect the uniform growth of seedlings, thereby reducing the overall effect of sand control and sand fixation.

[0003] Accurate control of the sowing amount is also crucial for sand prevention and control work. In the absence of a quantity control mechanism, the sowing amount is difficult to adjust accurately, which may lead to excessive or insufficient sowing. Over-seeding will waste resources and increase maintenance costs, while insufficient sowing may lead to insufficient vegetation coverage and failure to achieve the expected sand prevention effect. Therefore, in forestry sand prevention and control work, precise control of the sowing amount is an important requirement to improve work efficiency and effectiveness. Utility Model Content

[0004] In view of the problems existing in the prior art, the utility model provides a seedling sowing device for forestry sand prevention and control, so as to solve the technical problems mentioned in the background technology that the sowing process becomes complicated and inefficient, and the sowing quantity is difficult to accurately adjust.

[0005] To achieve the above-mentioned objectives, the utility model provides the following technical solutions: a seeding device for forestry sand control and desertification control, comprising a base, a seeding mechanism is arranged on the base, the seeding mechanism comprises a seed storage box, a cone rod, a paddle plate and a seed funnel, the seed storage box is mounted on the top surface of the base, the cone rod is provided with multiple groups mounted on the front end of the base, the paddle plate is mounted on the rear end of the base, the seed funnel is arranged on the bottom surface of the base and a quantity control mechanism is connected therebetween, the quantity control mechanism comprises an external sleeve, an adjusting sleeve, a screw, a transmission sleeve, an inclined sliding block and a quantity control plate, the external sleeve is mounted on the bottom surface of the base and communicates with the seed storage box, the adjusting sleeve is rotatably mounted on the bottom surface of the external sleeve and is connected with the seed funnel, the screw is mounted in the adjusting sleeve, the transmission sleeve is slidably mounted in the external sleeve and is threadedly connected with the screw, the inclined sliding blocks are provided with multiple groups distributed in the external sleeve, and the quantity control plate is mounted on the top surfaces of multiple groups of the inclined sliding blocks.

[0006] The utility model is further configured as follows: a positioning mechanism is provided on the adjusting sleeve, and the positioning mechanism includes a positioning groove, a positioning block and a tension spring. The positioning grooves are provided with multiple groups distributed on the outer wall of the outer sleeve, and the positioning blocks are provided with multiple groups slidably installed on the adjusting sleeve. The tension springs are provided with multiple groups and the two ends are respectively connected to the top ends of the multiple groups of positioning blocks and the outer wall of the adjusting sleeve. Through the cooperation of the positioning blocks and the positioning grooves, the adjusting sleeve is ensured to be in a precise position, thereby improving the stability and reliability of the equipment. The setting of the tension spring allows the positioning block to be flexibly moved relative to the adjusting sleeve to adapt to different adjustment requirements.

[0007] The utility model is further configured such that an inclined slide groove is provided in the outer sleeve, and the inclined slide groove is provided with multiple groups distributed on the inner wall of the outer sleeve, and multiple groups of the inclined sliding blocks are slidably installed in the multiple groups of the inclined slide grooves. The sliding of the inclined sliding blocks in the inclined slide grooves limits their moving direction, ensuring the directional nature of the movement. The inclined sliding structure simplifies the movement mechanism, reduces the friction between components, and improves the movement efficiency.

[0008] The utility model is further configured as follows: a moving wheel is provided on the base, and a plurality of groups of the moving wheels are installed on both sides of the base. A driving machine is installed on the base, and the driving machine is installed on the top surface of the base and is hingedly connected to the driving machine. The moving wheel can be rotated by the power provided by the driving machine to realize the movement of the entire device. The moving wheel and the driving machine installed on the base provide a stable power source for the equipment.

[0009] The utility model is further configured such that the plurality of groups of cone rods and shift plates are all rotatably connected to the base. The rotatable connection between the cone rods and the shift plates increases the flexibility of operation and facilitates the realization of various actions. The rotatable connection simplifies the mechanical structure, reduces complexity, and facilitates maintenance.

[0010] The utility model is further configured as follows: a limiting mechanism is arranged on the external sleeve, and the limiting mechanism includes a limiting sleeve, a support rod, an unlocking sleeve, a baffle and a clearance groove; the limiting sleeve is slidably mounted on the external sleeve, the support rod is provided with a plurality of groups mounted on the limiting sleeve, the unlocking sleeve is rotatably mounted on the external sleeve, the baffle is provided with a plurality of groups respectively mounted on the bottom ends of a plurality of groups of support rods, and the clearance groove is provided with a plurality of groups distributed on the outer wall of the unlocking sleeve; the setting of the baffle and the support rod limits the device from stopping at a specific position to prevent damage caused by excessive movement; through the cooperation of the unlocking sleeve and the clearance groove, the limit can be released when needed, allowing the device to make necessary adjustments or movements; the sliding connection between the slide bar and the limiting sleeve ensures precise control of the limiting mechanism.

[0011] The utility model is further configured such that a sliding bar is provided on the outer sleeve, and the sliding bar is provided in multiple groups and is slidably connected with the limit sleeve. The existence of the sliding bar allows the position of the limit sleeve to be fine-tuned, thereby ensuring the limit accuracy and meeting the requirements under different working conditions. The provision of multiple groups of sliding bars increases the support area of ​​the limit sleeve and improves the stability of the entire structure.

[0012] The utility model is further configured such that the spacing between the multiple groups of baffles arranged between the support rods is adapted to the thickness of the unlocking sleeve. Since the spacing is adapted to the thickness, the operator can easily control the position of the baffle by rotating the unlocking sleeve to achieve rapid locking and unlocking. The adaptive design reduces the possibility of misoperation and ensures the safe operation of the equipment.

[0013] Compared with the prior art, the utility model provides a seedling sowing device for forestry sand prevention and control, which has the following beneficial effects:

[0014] 1. In the sowing mechanism, the pit-opening function of the cone rod and the burying function of the paddle have significant beneficial effects. The cone rod can efficiently open pits in the soil, providing a suitable planting environment for seeds, which not only reduces the labor intensity of manual pit digging, but also improves the sowing speed and consistency. The burying function of the paddle ensures that the seeds are properly covered, helps to maintain soil moisture and temperature, promotes seed germination and seedling growth, and prevents direct damage to seeds by wind and sand, thereby improving the survival rate of seedlings and the effect of sand control. This design makes the sowing process more efficient and reliable, and lays a solid foundation for the subsequent growth of seedlings.

[0015] 2. The quantity control mechanism consists of an external sleeve, an adjusting sleeve, a screw, a transmission sleeve, an inclined slider and a quantity control plate. The core of this mechanism is to accurately control the amount of sowing. The rotation of the adjusting sleeve can drive the movement of the screw and the transmission sleeve, and then push the inclined slider to slide along the inclined slide groove. The quantity control plate on the top surface of the inclined slider moves accordingly, thereby adjusting the channel width for seed outflow and realizing precise control of the sowing amount. This design not only improves the uniformity of sowing, but also allows the sowing process to be flexibly adjusted as needed.

[0016] 3. The positioning mechanism includes a positioning groove, a positioning block and a tension spring. Its main function is to ensure that the adjusting sleeve is in the correct position. The design of the positioning groove and the positioning block makes the adjusting sleeve subject to a certain resistance during the rotation process, thereby avoiding the seeding amount error caused by improper operation. The function of the tension spring is to maintain the appropriate tension between the positioning block and the adjusting sleeve, so that the positioning block can slide stably, further improving the accuracy of the position of the adjusting sleeve.

[0017] 4. The limiting mechanism consists of a limiting sleeve, a support rod, an unlocking sleeve, a baffle and a clearance groove. Its main function is to limit the rotation angle of the adjusting sleeve, thereby setting the adjustment range of the seeding amount. The sliding installation of the limiting sleeve and the baffle on the support rod are adapted to the thickness of the unlocking sleeve, so that the rotation angle of the adjusting sleeve is limited, preventing excessive adjustment of the seeding amount. The rotation of the unlocking sleeve can make the baffle break away from the fixation of the limiting sleeve, thereby realizing precise adjustment of the seeding amount. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of a seedling sowing device for forestry sand prevention and control in the utility model;

[0019] Figure 2 This is a schematic diagram of the bottom view of the base in the utility model;

[0020] Figure 3 It is a cross-sectional structural diagram of the control mechanism of the utility model;

[0021] Figure 4 It is a cross-sectional structural schematic diagram of the limiting mechanism in the utility model;

[0022] Figure 5 For the utility model Figure 4 A partial enlarged view of point A in the middle.

[0023] In the figure: 1. base; 2. seed storage box; 3. cone rod; 4. dial plate; 5. seed funnel; 6. outer sleeve; 7. adjustment sleeve; 8. screw rod; 9. transmission sleeve; 10. inclined sliding block; 11. quantity control plate; 12. positioning groove; 13. positioning block; 14. tension spring; 15. inclined sliding groove; 16. driving wheel; 17. driving machine; 18. limiting sleeve; 19. support rod; 20. unlocking sleeve; 21. baffle; 22. clearance groove; 23. slide bar. DETAILED DESCRIPTION

[0024] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0025] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0026] In the present invention, unless otherwise specified, directions such as "up" and "down" are usually used in reference to the directions shown in the drawings, or in reference to the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "left" and "right" are usually used in reference to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0027] See also Figure 1-Figure 5 A seedling sowing device for forestry sand control and sand control comprises a base 1, on which a sowing mechanism is arranged, the sowing mechanism comprising a seed box 2, a cone rod 3, a dial plate 4 and a seed funnel 5, the seed box 2 is mounted on the top surface of the base 1, the cone rod 3 is provided with multiple groups mounted on the front end of the base 1, the dial plate 4 is mounted on the rear end of the base 1, the seed funnel 5 is arranged on the bottom surface of the base 1 and a control mechanism is connected therebetween, the control mechanism comprises an external sleeve 6, an adjusting sleeve 7, a screw 8, a transmission sleeve 9, an inclined sliding block 10 and a control plate 11, the external sleeve 6 is mounted on the bottom surface of the base 1 and communicates with the seed box 2, the adjusting sleeve 7 is rotatably mounted on the bottom surface of the external sleeve 6 and connected to the seed funnel 5, the screw 8 is mounted in the adjusting sleeve 7, the transmission sleeve 9 is slidably mounted in the external sleeve 6 and is threadedly connected to the screw 8, the inclined sliding blocks 10 are provided with multiple groups distributed in the external sleeve 6, and the control plate 11 is mounted on the top surfaces of the multiple groups of inclined sliding blocks 10.

[0028] A positioning mechanism is provided on the adjusting sleeve 7, and the positioning mechanism includes a positioning groove 12, a positioning block 13 and a tension spring 14. The positioning grooves 12 are provided with multiple groups distributed on the outer wall of the outer sleeve 6, and the positioning blocks 13 are provided with multiple groups slidably installed on the adjusting sleeve 7. The tension spring 14 is provided with multiple groups and the two ends are respectively connected to the top ends of the multiple groups of positioning blocks 13 and the outer wall of the adjusting sleeve 7. The positioning grooves 12 are distributed on the outer wall of the outer sleeve 6 for receiving the positioning blocks 13. The positioning blocks 13 are slidably installed on the adjusting sleeve 7 and are connected to the outer wall of the adjusting sleeve 7 through the tension spring 14 to keep the positioning blocks 13 in the correct position in the positioning groove 12.

[0029] An inclined slide groove 15 is opened in the outer sleeve 6, and the inclined slide groove 15 is provided with multiple groups distributed on the inner wall of the outer sleeve 6. Multiple groups of inclined sliding blocks 10 are slidably installed in the multiple groups of inclined slide grooves 15. The inclined sliding block 10 is slidably installed in the inclined slide groove 15. This structural design allows the inclined sliding block 10 to move along a certain direction in the inclined slide groove 15.

[0030] A moving wheel 16 is provided on the base 1, and a plurality of groups of moving wheels 16 are installed on both sides of the base 1. A driving machine 17 is installed on the base 1, and the driving machine 17 is installed on the top surface of the base 1 and is hingedly connected to the driving machine 17. The moving wheels 16 are installed on both sides of the base 1, and are powered by the driving machine 17, so that the moving wheels 16 can rotate through the hinged connection.

[0031] The multiple groups of cone rods 3 and the shifting plates 4 are all rotatably connected to the base 1 . The cone rods 3 and the shifting plates 4 are rotatably connected to the base 1 , which means that they can rotate around the base 1 .

[0032] In this embodiment, the seeds are first placed in the seed storage box 2, and the driving wheel 16 is driven by the driving machine 17 to move on the bottom surface, and pits are opened on the bottom surface through multiple groups of cone rods 3. Then, the seeds fall into the pits through the external sleeve 6 and the seed funnel 5 connected with the base 1, and finally, the pits are buried with sand around the pits through the paddle 4. The adjusting sleeve 7 can rotate, and a screw 8 is installed inside. By rotating the adjusting sleeve 7, the screw 8 rotates accordingly and cooperates with the transmission sleeve 9 thread, pushing the transmission sleeve 9 to move up and down, and the transmission sleeve 9 pushes the multiple groups of inclined slide blocks 1 0 slides along the inclined slide groove 15, and drives the multiple groups of control plates 11 to move, so as to adjust the spacing between the multiple groups of control plates 11, and controls the flow of seeds by moving the inclined slide block 10 to ensure the uniformity of sowing, so as to adjust the number of sowing. During the rotation of the adjusting sleeve 7, the multiple groups of positioning blocks 13 are inserted into the positioning grooves 12, so that there is a certain resistance during the rotation of the adjusting sleeve 7, and the spacing between the multiple groups of positioning grooves 12 is connected, and the rotation value of the adjusting sleeve 7 can be judged according to the positioning grooves 12 to ensure the accuracy of the adjusting sleeve 7.

[0033] See also Figure 4 As an implementation method of the limiting mechanism: a limiting mechanism is arranged on the outer sleeve 6, the limiting mechanism includes a limiting sleeve 18, a support rod 19, an unlocking sleeve 20, a baffle 21 and a clearance groove 22, the limiting sleeve 18 is slidably mounted on the outer sleeve 6, the support rod 19 is provided with multiple groups installed on the limiting sleeve 18, the unlocking sleeve 20 is rotatably mounted on the outer sleeve 6, the baffle 21 is provided with multiple groups respectively installed at the bottom ends of multiple groups of support rods 19, the clearance grooves 22 are provided with multiple groups distributed on the outer wall of the unlocking sleeve 20, the limiting sleeve 18 slides on the outer sleeve 6, the support rod 19 is installed on the limiting sleeve 18, the unlocking sleeve 20 is rotatably mounted on the outer sleeve 6, and the baffle 21 is installed at the bottom end of the support rod 19, and the clearance grooves 22 are distributed on the outer wall of the unlocking sleeve 20.

[0034] The outer sleeve 6 is provided with a slide bar 23, and the slide bar 23 is provided with multiple groups and is slidably connected with the limit sleeve 18. The slide bar 23 provided on the outer sleeve 6 is configured in multiple groups, and they form a sliding connection with the limit sleeve 18. This design allows the limit sleeve 18 to slide in a certain direction on the slide bar 23, thereby realizing the position adjustment of the limit sleeve 18.

[0035] The spacing between multiple groups of baffles 21 arranged between the support rods 19 is adapted to the thickness of the unlocking sleeve 20. Multiple groups of baffles 21 are arranged between the support rods 19, and their spacing is adapted to the thickness of the unlocking sleeve 20. This means that when the unlocking sleeve 20 is rotated to a specific position, the baffles 21 can contact the outer wall of the unlocking sleeve 20, thereby limiting or allowing the movement of the limit sleeve 18.

[0036] More specifically, the sliding limit sleeve 18 makes its top inner wall abut against the top of the multiple groups of positioning blocks 13, so that the multiple groups of positioning blocks 13 are fixed in the positioning grooves 12, and the adjustment sleeve 7 is fixed and limited. Then the unlocking sleeve 20 is rotated to make the multiple groups of baffles 21 stuck on both sides of the limit sleeve 18, so that the limit sleeve 18 blocks the multiple groups of support rods 19 and fixes the limit sleeve 18. When unlocking is required, the unlocking sleeve 20 is rotated to make the multiple groups of giving way grooves 22 move to the position of the baffle 21, so that the multiple groups of baffles 21 can be separated from the fixation of the limit sleeve 18, and the unlocking is completed.

[0037] In summary, when the overall equipment is in use or running: first, the seeds are placed in the seed storage box 2, and the driving machine 17 drives the driving wheel 16 to move on the bottom surface, and pits are opened on the bottom surface through multiple groups of cone rods 3. Then the seeds fall into the pits through the external sleeve 6 and the seed funnel 5 connected to the base 1, and finally the pits are buried with sand on the side of the pits through the paddle 4. The adjusting sleeve 7 can rotate, and a screw 8 is installed inside. By rotating the adjusting sleeve 7, the screw 8 rotates accordingly and cooperates with the transmission sleeve 9 thread, pushing the transmission sleeve 9 to move up and down, and the transmission sleeve 9 pushes multiple The inclined sliding block 10 slides along the inclined sliding groove 15 and drives the multiple groups of control plates 11 to move, thereby adjusting the spacing between the multiple groups of control plates 11. The flow rate of seeds is controlled by the movement of the inclined sliding block 10 to ensure the uniformity of sowing, thereby adjusting the number of sowing. During the rotation of the adjusting sleeve 7, multiple groups of positioning blocks 13 are inserted into the positioning grooves 12, so that there is a certain resistance during the rotation of the adjusting sleeve 7, and the spacing between the multiple groups of positioning grooves 12 is connected. The rotation value of the adjusting sleeve 7 can be judged according to the positioning grooves 12 to ensure the accuracy of the adjusting sleeve 7.

[0038] The limiting sleeve 18 is slid so that its top inner wall abuts against the tops of the multiple groups of positioning blocks 13, so that the multiple groups of positioning blocks 13 are fixedly stuck in the positioning grooves 12, and the adjustment sleeve 7 is fixedly limited. Then the unlocking sleeve 20 is rotated so that the multiple groups of baffles 21 are stuck on both sides of the limiting sleeve 18, so that the limiting sleeve 18 blocks the multiple groups of support rods 19 and fixes the limiting sleeve 18. When unlocking is required, the unlocking sleeve 20 is rotated so that the multiple groups of giving way grooves 22 move to the position of the baffles 21, so that the multiple groups of baffles 21 can be separated from the fixation of the limiting sleeve 18, and the unlocking is completed.

[0039] In all the schemes mentioned above, the connection between two parts can be selected according to actual conditions by welding, bolt and nut matching connection, bolt or screw connection or other well-known connection methods, which are not described here one by one. In the above, all fixed connections are preferably welded. Although the embodiments of the utility model have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the utility model. The scope of the utility model is defined by the attached claims and their equivalents.

Claims

1. A seedling sowing device for forestry sand prevention and control, comprising a base (1), characterized in that: The base (1) is provided with a sowing mechanism, the sowing mechanism comprising a seed storage box (2), a cone rod (3), a paddle (4) and a seed hopper (5), the seed storage box (2) being mounted on the top surface of the base (1), the cone rod (3) being provided with a plurality of groups mounted on the front end of the base (1), the paddle (4) being mounted on the rear end of the base (1), the seed hopper (5) being arranged on the bottom surface of the base (1) and a quantity control mechanism being connected therebetween, the quantity control mechanism comprising an external sleeve (6), an adjustment sleeve (7), a screw rod (8), a transmission sleeve (9), an inclined The slider (10) and the control plate (11) are provided, wherein the outer sleeve (6) is mounted on the bottom surface of the base (1) and communicates with the seed storage box (2); the adjustment sleeve (7) is rotatably mounted on the bottom surface of the outer sleeve (6) and connected to the seed hopper (5); the screw (8) is mounted in the adjustment sleeve (7); the transmission sleeve (9) is slidably mounted in the outer sleeve (6) and is threadedly connected to the screw (8); a plurality of groups of inclined sliders (10) are provided and distributed in the outer sleeve (6); and the control plate (11) is mounted on the top surfaces of the plurality of groups of inclined sliders (10).

2. A seedling sowing device for forestry sand prevention and control according to claim 1, characterized in that: The adjusting sleeve (7) is provided with a positioning mechanism, the positioning mechanism comprising a positioning groove (12), a positioning block (13) and a tension spring (14); the positioning groove (12) is provided with a plurality of groups distributed on the outer wall of the outer sleeve (6); the positioning block (13) is provided with a plurality of groups slidably mounted on the adjusting sleeve (7); the tension spring (14) is provided with a plurality of groups and the two ends thereof are respectively connected to the top ends of the plurality of groups of positioning blocks (13) and the outer wall of the adjusting sleeve (7).

3. A seedling sowing device for forestry sand prevention and control according to claim 2, characterized in that: An inclined slide groove (15) is provided in the outer sleeve (6), and a plurality of groups of the inclined slide grooves (15) are arranged distributed on the inner wall of the outer sleeve (6), and a plurality of groups of the inclined sliding blocks (10) are slidably installed in the plurality of groups of the inclined slide grooves (15).

4. A seedling sowing device for forestry sand prevention and control according to claim 3, characterized in that: The base (1) is provided with a moving wheel (16), and a plurality of groups of the moving wheels (16) are installed on both sides of the base (1). The base (1) is provided with a driving machine (17), and the driving machine (17) is installed on the top surface of the base (1) and is hinge-connected to the driving machine (17).

5. A seedling sowing device for forestry sand prevention and control according to claim 4, characterized in that: multiple groups The conical rod (3) and the shifting plate (4) are both rotatably connected to the base (1).

6. A seedling sowing device for forestry sand prevention and control according to claim 5, characterized in that: A limiting mechanism is provided on the outer sleeve (6), the limiting mechanism comprising a limiting sleeve (18), a support rod (19), an unlocking sleeve (20), a baffle (21) and a clearance groove (22); the limiting sleeve (18) is slidably mounted on the outer sleeve (6); a plurality of support rods (19) are provided and are mounted on the limiting sleeve (18); the unlocking sleeve (20) is rotatably mounted on the outer sleeve (6); a plurality of baffles (21) are provided and are respectively mounted on the bottom ends of a plurality of support rods (19); and a plurality of clearance grooves (22) are provided and are distributed on the outer wall of the unlocking sleeve (20).

7. A seedling sowing device for forestry sand prevention and control according to claim 6, characterized in that: The outer sleeve (6) is provided with a sliding bar (23), and the sliding bar (23) is provided in multiple groups and is slidably connected to the limiting sleeve (18).

8. The seedling sowing device for forestry sand prevention and control according to claim 7 is characterized by: The spacing between the plurality of groups of baffles (21) arranged between the support rods (19) is adapted to the thickness of the unlocking sleeve (20).

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