Tobacco seedling transplanting and hole digging device and method

Abstract

The application discloses a tobacco seedling transplanting and hole digging device and a hole digging method, and relates to the technical field of agricultural planting. In the scheme, a cylinder with a conical outer peripheral contour is matched with a spiral drill bit to realize the upward discharge of soil from the hole while the hole is being dug, so that the excessively high compaction degree of the hole wall caused by the traditional mode of extruding soil to the side of the hole is avoided, and the growth of the tobacco seedling root system to the surrounding is not affected. After the hole is completed, the cylinder is driven to move upward by a preset distance, and the arc-shaped plate is driven to move from the folded position to the unfolded position. On the one hand, the drainage opening is opened to pour a preset amount of water to the bottom of the hole, and on the other hand, the arc-shaped plate in the unfolded position is rotated with the cylinder to realize a certain degree of compaction of the hole wall close to the opening of the hole, so that the collapse of the hole wall close to the opening of the hole is effectively avoided, and the stability of the hole forming is ensured.

Description

Technical Field

[0001] This invention relates to the field of agricultural planting technology, and in particular to a device and method for digging holes for transplanting tobacco seedlings. Background Technology

[0002] Digging holes before transplanting tobacco seedlings is a crucial step to ensure their survival and healthy growth. Specifically, a hole is drilled in the ground at the transplanting site. The hole's depth is generally 15-20 cm, and its diameter is generally 10-12 cm (adjusted according to seedling size and soil conditions). Digging holes provides suitable growing space for the seedlings and also improves soil aeration. Currently, when digging holes for tobacco transplanting, a solid auger is typically inserted vertically into the soil to form these holes. The mechanism of this method is that the drill compresses the soil outwards, resulting in excessive compaction of the hole walls. This reduces soil pores, making it difficult for roots to penetrate and restricting root expansion. Furthermore, poor soil aeration negatively impacts seedling root growth. Alternatively, other hole-drilling methods (such as leaf-operated hole diggers) can result in overly loose hole walls, leading to unstable holes prone to collapse and requiring secondary drilling (affecting work efficiency).

[0003] Therefore, how to provide a device and method for digging holes for transplanting tobacco seedlings that can avoid excessive compaction of the hole walls, which would affect the root growth of the tobacco seedlings, while also ensuring that the hole walls have a certain degree of stability to prevent collapse, has become a technical problem that urgently needs to be solved in the field of tobacco seedling planting. Summary of the Invention

[0004] The purpose of this invention is to provide a device and method for drilling holes for tobacco seedling transplanting, which aims to improve the current problems in tobacco planting, such as the hole walls being easily over-compacted, affecting the root growth of tobacco seedlings, and the hole walls being too loose, leading to easy collapse and low stability.

[0005] To achieve the above objectives, in a first aspect, embodiments of this application provide a tobacco seedling transplanting hole-drilling device, having a Z-direction extending along its height direction, including: The frame is arranged to move along the Z-axis; A cylindrical body is rotatably mounted on the frame; in the Z direction, the outer periphery of the cylindrical body has a large-diameter end located at the top and a small-diameter end located at the bottom; in the Z direction, a conveying cavity is provided through the cylindrical body; A spiral drill bit is housed within the conveying cavity, and at least a portion of the spiral drill bit extends upward out of the conveying cavity in the Z direction for rotatable mounting on the frame. An arc-shaped plate is rotatably mounted on the outer periphery of the cylinder. The arc-shaped plate has a retracted position and an extended position. In the retracted position, the arc-shaped plate is flush with the outer periphery of the cylinder. In the extended position, the arc-shaped plate is used to compress the cavity wall. Multiple arc-shaped plates are provided, and these plates are arranged at intervals around the periphery of the cylinder. A first water chamber is located inside the cylinder, and the cylinder has a drain outlet that communicates with the first water chamber. The arc-shaped plate is in the retracted position to block the drain outlet; the arc-shaped plate is in the unfolded position to open the drain outlet.

[0006] In one embodiment, the outer peripheral sidewall of the cylinder is provided with a mounting groove for rotatably mounting the arc-shaped plate, and the drain outlet is located on the sidewall of the mounting groove near the conveying cavity; The arc-shaped plate is in the retracted position, the arc-shaped plate is completely accommodated in the mounting groove, and the drain outlet is blocked; The arc-shaped plate is in the unfolded position, with at least a portion of the arc-shaped plate extending outward from the mounting groove, opening the drain outlet and squeezing the cavity wall.

[0007] In one embodiment, the tobacco seedling transplanting hole-drilling device further includes a telescopic rod for driving the arc-shaped plate to move between the retracted position and the extended position; The telescopic rod has a fixed end and a telescopic end. One of the fixed end and the telescopic end is rotatably mounted on the outer peripheral side wall of the cylinder, and the other is rotatably mounted on the arc-shaped plate.

[0008] In one embodiment, the arc-shaped plate is provided with a second water cavity for storing water, and the outer peripheral wall of the second water cavity opposite to the conveying cavity is provided with spray holes; The second water chamber is equipped with a control valve. When the arc-shaped plate is in the retracted position, it drives the control valve to block the spray hole. When the arc-shaped plate is in the unfolded position, it causes the control valve to open the spray hole.

[0009] In one embodiment, the control valve includes: A contact rod is slidably mounted radially within the second water cavity along the conveying cavity, with one end of the contact rod extending outward from the second water cavity towards the conveying cavity; and A valve plate is disposed in the second water chamber, and the valve plate is fixedly installed on the end of the abutment rod away from the conveying chamber. A plunger is fixedly disposed on the side of the valve plate away from the abutment rod, and the plunger is correspondingly disposed with the spray hole; An elastic element is connected between the valve plate and the second water chamber; when the arc-shaped plate is in the retracted position, the abutment rod is fully retracted into the arc-shaped plate, and the plug is used to block the spray hole; when the arc-shaped plate is in the extended position, the elastic element drives the abutment rod to extend at least partly outward into the second water chamber, and the plug retracts from the spray hole and opens the spray hole.

[0010] In one embodiment, at least one sidewall of the first water cavity opposite to the delivery cavity has an elastically deformable portion, the elastically deformable portion constituting part of the sidewall of the first water cavity; In the Z direction, the spray hole is located below the elastically deformable portion and / or on the sidewall of the first water cavity along both sides of the elastically deformable portion in the circumferential direction.

[0011] In one embodiment, the tobacco seedling transplanting hole-digging equipment further includes a water supply component, which is installed on the frame. The water supply assembly is used to deliver a preset amount of water into the first water chamber and the second water chamber.

[0012] In one embodiment, the tobacco seedling transplanting hole-digging device further includes a driving component; The drive unit is mounted on the frame and is used to drive the cylinder and the auger drill bit to rotate at a preset speed.

[0013] Secondly, this application provides a method for creating planting holes, using the tobacco seedling transplanting hole-creating equipment described in the above embodiments, including the following steps: S1: First, the cylinder and the auger drill bit are controlled to rotate at a preset speed by the drive component; S2: In the Z direction, control the frame to move from top to bottom a preset distance and then stop moving; S3: The drive unit controls the auger drill bit to stop rotating and drives the cylinder to continue rotating; in the Z direction, it drives the frame to move upward by a preset distance; S4: Drive the arc-shaped plate from the retracted position to the unfolded position to squeeze the cavity wall near the cavity opening, and at the same time open the drain outlet to discharge the water in the first water cavity into the bottom of the cavity through the drain outlet.

[0014] In one embodiment, in S4, the arc-shaped plate moves from the retracted position to the unfolded position, squeezing the cavity wall; The cavity wall causes the elastic deformation part to indent into the second water cavity, causing the water in the second water cavity to spray outward at a higher flow rate.

[0015] Compared with existing technologies, the present invention provides a tobacco seedling transplanting hole-drilling device and method, which has the following advantages: This solution uses a cylinder with a conical outer periphery in conjunction with a spiral drill bit to simultaneously expel soil from the hole while drilling, thus avoiding the excessive compaction of the hole wall caused by the traditional method of squeezing soil around the hole, which would hinder the root growth of the tobacco seedling. After drilling, the cylinder is moved upwards a predetermined distance, and the arc-shaped plate is moved from the retracted position to the extended position. This serves two purposes: firstly, to open the drainage outlet for watering the bottom of the hole with a predetermined amount of water; secondly, to allow the extended plate to be used for other purposes. The curved plate, along with the rotation of the cylinder, compacts the cavity wall near the opening to a certain extent, effectively preventing the cavity wall from collapsing and ensuring the stability of the cavity formation. In this design, when the curved plate moves from the retracted position to the extended position, the spray holes on the curved plate are opened, and the cavity wall is squeezed by the elastic deformation part, forcing the water in the second water chamber to spray outward at a high flow rate, so as to spray water onto the periphery of the cavity. Together with the water discharged from the drain, the soil inside the cavity is evenly irrigated, providing a good soil environment for the subsequent growth of tobacco seedlings. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the arc-shaped plate of the tobacco seedling transplanting hole-drilling device in the retracted position according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the arc-shaped plate of a tobacco seedling transplanting hole-drilling device in the unfolded position according to an embodiment of the present invention; Figure 3 For the present invention Figure 2 Enlarged schematic diagram of the structure at point A in the middle; Figure 4 This is a schematic diagram of the internal structure of the cylindrical body after cross-section according to an embodiment of the present invention; Figure 5 For the present invention Figure 4 Front view of the middle structure; Figure 6 For the present invention Figure 4 Enlarged schematic diagram of the structure at point B; Figure 7 This is a schematic diagram of an arc-shaped plate structure with an elastic deformation section according to an embodiment of the present invention; Figure 8 This is a schematic diagram of the arc-shaped plate from another perspective according to an embodiment of the present invention; Figure 9 This is a schematic diagram of the working state of an embodiment of the present invention; Figure 10 This is a schematic diagram of the arc-shaped plate extruding the cavity wall in the unfolded position according to an embodiment of the present invention; Figure 11This is a schematic diagram showing the installation position relationship between the cylinder and the arc-shaped plate according to another embodiment of the present invention; Figure 12 For the present invention Figure 4 Enlarged schematic diagram of the structure at point C; Figure 13 This is a top view of the arc-shaped plate of the present invention in its retracted and unfolded positions.

[0017] In the diagram, 1 is the frame; 11 is the connecting rod; and 12 is the load-bearing platform. 2. Cylinder body; 21. Conveying chamber; 22. Large diameter end; 23. Small diameter end; 24. First water chamber; 25. Drain outlet; 26. Mounting groove; 27. Extension; 28. Drainage joint; 3. Auger bit; 31. Drill rod; 32. Helical blade; 4. Arc-shaped plate; 41. Second water chamber; 42. Spray hole; 43. Elastic deformation part; 44. Elastic seal; 5. Telescopic pole; 51. Fixed end; 52. Telescopic end; 6. Control valve; 61. Abutment rod; 62. Valve plate; 63. Plug; 64. Elastic element; 7. Drive component; 71. First shaft; 711. Connecting rod; 72. Second shaft; 8. Conical umbrella cap; 9. Pipeline; 91. Main water pipe; 92. Branch water pipe; 93. Transfer box; 931. Rotary joint plate; 94. Inlet pipe; 10. Hole. Detailed Implementation

[0018] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0019] In the description of this invention, it should be understood that the terms "upper," "lower," "left," "right," "front," "rear," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as blocking the invention. It should be understood that the terms "first," "second," etc., are used in this invention to describe various information, but this information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this invention, "first" information can also be referred to as "second" information, and similarly, "second" information can also be referred to as "first" information.

[0020] Digging holes before transplanting tobacco seedlings is a crucial step to ensure their survival and healthy growth. Specifically, a hole is drilled in the ground at the transplanting site. The hole is typically 15-20 cm deep and 10-12 cm in diameter (adjustments can be made based on seedling size and soil conditions). Digging holes provides suitable growing space for the seedlings and also improves soil aeration. Currently, a solid auger drill bit is usually inserted vertically into the soil to create these holes. The mechanism of this method is that the drill bit pushes the soil outwards from the hole. The holes are formed by compression, resulting in excessive compaction of the hole walls. This reduces soil pores, making it difficult for roots to penetrate and restricting the expansion of tobacco seedling roots. Furthermore, poor soil aeration negatively impacts root growth. Alternatively, other hole-making methods, such as leaf-operated tobacco seedling hole-making machines, often produce holes with overly loose walls, leading to unstable holes prone to collapse and requiring secondary hole-making (affecting work efficiency). Based on the above, this application provides a tobacco seedling transplanting hole-making device and method to solve these problems.

[0021] Reference Figures 1-13 As shown in the embodiment of this application, a tobacco seedling transplanting hole-drilling device is proposed, which has a Z-direction extending along the height direction of the device, including a frame 1, a cylinder 2, a spiral drill bit 3, and an arc plate 4; wherein the frame 1 is arranged to move along the Z-direction, and the frame 1 includes a bearing platform 12 and a connecting rod 711 fixedly installed with the bearing platform 12; for example, the frame 1 can be installed on agricultural machinery (such as a small field mobile vehicle, driven by a person or remotely controlled by an unmanned person), and the agricultural machinery can move the frame 1 in the field to realize the hole-drilling operation; it is understood that the agricultural machinery is provided with a component that can drive the frame 1 to move along the Z-direction, such as a lifting assembly (hydraulic rod or electric rod, etc.), connecting the upper end of the connecting rod 711 and the telescopic part of the lifting assembly, thereby driving the frame 1 to move in the Z-direction through the lifting assembly, so that the frame 1 can move relative to the agricultural machinery according to the needs of hole-drilling.

[0022] In this embodiment, the cylinder 2 is rotatably mounted on the frame 1. In the Z direction, the outer periphery of the cylinder 2 has a large-diameter end 22 located at the top and a small-diameter end 23 located at the bottom, that is, the outer periphery of the cylinder 2 is tapered, which facilitates the insertion of the cylinder 2 into the soil; as Figure 5As shown, a conveying cavity 21 is coaxially provided along the Z-direction inside the cylinder 2, and the conveying cavity 21 is a cylindrical hole with consistent upper and lower dimensions. A spiral drill bit 3 is installed in the conveying cavity 21, comprising a drill rod 31 coaxially arranged with the conveying cavity 21, and spiral blades 32 arranged spirally on the peripheral wall of the drill rod 31. The outer sides of the spiral blades 32 are in contact with or slightly spaced from the inner wall of the conveying cavity 21. The upper end of the drill rod 31 extends upwards at least partially out of the conveying cavity 21 and is rotatably connected to the frame 1. Exemplarily, both the cylinder 2 and the spiral drill bit 3 are driven by a driving component 7 mounted on the frame 1. The driving component 7 can be fixedly installed on the support platform 12, such as at the bottom of the support platform 12 (using fasteners) or by a connecting rod 711 extending from top to bottom through the support platform 12 and reaching below it. Component 7 is fixed to the bottom of connecting rod 711 (using fasteners); it can be understood that the driving component 7 is a motor. In order to make the device have a simpler structure, the motor can be a dual-shaft drive motor, that is, the motor has two sets of cooperating stators and rotors inside, and the two sets of stators and rotors are controlled separately and each drives an independent rotating shaft (the rotation of the corresponding rotating shaft can be controlled by controlling the on and off of the current in each set of stators and rotors). The two rotating shafts can extend from both ends of the motor, or they can extend from the same end of the motor (in this case, one rotating shaft needs to be coaxially inserted into the other rotating shaft, and the two rotating shafts are spaced apart, so that the two rotating shafts can rotate under the action of their respective cooperating stators and rotors and complement each other). Since the above-mentioned dual-shaft motor is existing technology, its structure and principle will not be described in detail here; For example, this embodiment provides a specific structure for the drive component 7 to drive the cylinder 2 and the auger drill bit 3, such as... Figure 5 As shown, two rotating shafts extend from one end of the motor, including a first shaft 71 and a second shaft 72. The second shaft 72 is coaxially inserted inside the first shaft 71 and spaced apart from it, so that the rotation of the first shaft 71 and the second shaft 72 does not interfere with each other. The drill rod 31 of the auger drill bit 3 extends upward out of the conveying chamber 21 and is fixedly connected to the second shaft 72. A connecting rod 711 is arranged on the outer periphery of the first shaft 71, and the other end of the connecting rod 711 is fixedly connected to the cylinder 2. Thus, the cylinder 2 can be rotated through the first shaft 71. It is understood that, while ensuring the connection strength, the volume of the connecting rod 711 should be set as small as possible to avoid affecting the upward conveying of soil by the auger drill bit 3.

[0023] In this embodiment, as Figure 1 , Figure 2As shown, an arc-shaped plate 4 is rotatably mounted on the outer periphery of the large-diameter end 22 of the cylinder 2, allowing the arc-shaped plate 4 to rotate relative to the cylinder 2. The arc-shaped plate 4 has a retracted position and an extended position. When the arc-shaped plate 4 is in the retracted position, the outer periphery of the arc-shaped plate 4 is flush with the outer periphery of the cylinder 2, meaning that the outer periphery of the cylinder 2 forms a complete arc-shaped surface (as shown). Figure 1 (As shown); when the arc-shaped plate 4 is in the unfolded position, the arc-shaped plate 4 at least partially protrudes outward from the cylinder 2 (as shown). Figure 2 (As shown); when the arc plate 4 is in the retracted position, the outer peripheral sidewall of the cylinder 2 remains a flat arc surface, thus not affecting the cavitation process. After cavitation is completed, the arc plate 4 is moved from the retracted position to the unfolded position. With the help of the arc plate 4 protruding outward from the cylinder 2, the sidewall of the hole 10 near the opening is squeezed to improve the compaction of the sidewall of the hole 10 near the opening and prevent it from collapsing. Preferably, multiple arc plates 4 can be provided, and multiple arc plates 4 are arranged at intervals around the periphery of the cylinder 2.

[0024] In this embodiment, as Figure 4 , Figure 5 As shown, a first water cavity 24 is provided inside the cylinder 2. For example, the first water cavity 24 can be arranged in a ring shape, so as to make full use of the space of the cylinder 2. A drain outlet 25 communicating with the first water cavity 24 is provided on the cylinder 2. When the arc plate 4 is in the retracted position, the arc plate 4 blocks the drain outlet 25 (ensuring that no water flows out during the hole-making process). When the arc plate 4 is in the extended position, as the arc plate 4 rotates, the drain outlet 25 is no longer blocked, so that the water in the first water cavity 24 is discharged through the drain outlet 25 and used to pour a preset amount of water into the hole 10.

[0025] The specific implementation process of this embodiment is as follows: the agricultural machinery is driven to move to the required hole-drilling position, and then the drive component 7 is started and drives the auger drill bit 3 to rotate. At the same time, the lifting component on the agricultural machinery synchronously drives the frame 1 to move from top to bottom in the Z direction. During the movement, the rotating auger drill bit 3 continuously transports soil upwards and finally discharges it from the upper end of the conveying chamber 21. Due to the constraint of the conveying chamber 21, the efficiency of the auger drill bit 3 in transporting soil upwards can be improved. Since the soil generated during hole drilling is discharged upwards by the auger drill bit 3, compared with the traditional method of squeezing the soil to the periphery of the hole 10 to achieve hole drilling, this method is more efficient. This method avoids squeezing the sidewalls of the hole 10, ensuring that the sidewalls of the final hole 10 are not over-compacted. During the hole-drilling process, the cylinder 2 may or may not rotate. When the cylinder 2 rotates, its rotation direction should be the same as that of the auger drill bit 3, which helps the auger drill bit 3 to transport soil upward in the conveying chamber 21. The user controls the lifting components on the agricultural machinery to move the cylinder 2 and the auger drill bit 3 down to the preset position and then stop moving. At this time, the hole-drilling operation at the predetermined depth is completed (at this time, the upper end of the arc plate 4 is basically moved down to the same level as the terrain around the hole 10).

[0026] In this embodiment, because the outer periphery of the cylinder 2 is conical, the final shape of the hole 10 is also conical, meaning the upper radial dimension is large and the bottom radial dimension is small. This design ensures that when the lifting assembly moves the cylinder 2 upwards a preset distance, the bottom of the cylinder 2 and the bottom of the hole 10 are spaced a small distance apart in the Z-direction (e.g., ...). Figure 10 As shown, the upper end of the arc-shaped plate 4 is raised a certain distance above the terrain surrounding the hole 10, thereby allowing the outer peripheral wall of the cylinder 2 and the inner wall of the hole 10 to be separated, and forming a spatial gap between the inner wall of the hole 10 and the outer peripheral wall of the cylinder 2; then the arc-shaped plate 4 is moved from the retracted position to the unfolded position, so that the outer peripheral wall of the arc-shaped plate 4 is used to squeeze and compact the side wall at the opening of the hole 10 (e.g. Figure 10As shown in the diagram, simultaneously, the cylinder 2 is driven to rotate by the drive component 7 (at which time the auger drill bit 3 does not need to rotate). This, in turn, uses multiple arc-shaped plates 4 arranged around the outer periphery of the cylinder 2 to compress and compact the sidewalls at the opening of the hole 10, preventing the sidewalls above the hole 10 from collapsing and causing the collapsed soil to backfill the hole 10, necessitating a secondary excavation. Since the arc-shaped plates 4 compact the sidewalls near the opening of the hole 10, the sidewalls inside the hole 10 away from the opening are not compressed, and this area is precisely where the tobacco seedling roots are located. The design ensures that the roots of the tobacco seedlings will not be hindered from expanding outwards during later growth due to the compaction of the sidewalls of the holes 10 around them. In this design, the sidewalls of the holes 10 within the root zone of the tobacco seedlings are kept in a relatively natural state to ensure good root growth. The sidewalls of the holes 10 near the opening are compressed and compacted to a certain extent to prevent the holes 10 from collapsing, thus ensuring both good root growth and the stability of the hole 10 structure.

[0027] In this embodiment, several arc-shaped plates 4 move from the retracted position to the unfolded position, and the cylinder 2 drives the several arc-shaped plates 4 to rotate for pressing the sidewall near the opening of the hole 10. During this process, the sidewall of the hole 10 is mainly pressed through the outer periphery of the arc-shaped plates 4 and the area near the middle. Figure 13 As mentioned above, because the outer periphery of the arc plate 4 is arc-shaped, when the arc plate 4 is in the unfolded position, only the area near the middle of the outer periphery of the arc plate 4 is the furthest from the central axis of the hole 10, while the area far from the middle of the outer periphery of the arc plate 4 is the furthest from the central axis of the hole 10. Therefore, when the arc plate 4 rotates with the cylinder 2, it mainly squeezes the side wall near the opening of the hole 10 through the outer periphery of the arc plate 4 and the area near the middle (the areas at the outermost edges on both sides basically do not contact the hole wall).

[0028] In this embodiment, when the arc-shaped plate 4 moves from the retracted position to the extended position, the drain outlet 25 is opened simultaneously. This allows the water in the first water chamber 24 to be discharged outward through the opened drain outlet 25 and fall downward along the space between the outer peripheral side wall of the cylinder 2 and the inner wall of the hole 10 to the bottom of the hole 10. This achieves the process of watering the hole 10 simultaneously while squeezing the side wall of the hole 10 near the opening. This avoids the traditional situation where watering is required manually or by other means after drilling the hole, which is cumbersome and time-consuming. This helps to improve work efficiency. Watering the hole 10 after drilling ensures that there is enough moisture around the roots, promoting the absorption function of the tobacco seedling roots, thereby reducing damage to the roots of the tobacco seedlings during transplanting.

[0029] Reference Figure 4 , Figure 5 As shown, in one embodiment of this application, a mounting groove 26 for rotatably mounting an arc-shaped plate 4 is provided on the outer peripheral sidewall of the cylinder 2. The contour of the mounting groove 26 matches the contour of the arc-shaped plate 4, so that when the arc-shaped plate 4 is in the retracted position, it can be completely accommodated in the mounting groove 26, and the outer peripheral sidewall of the arc-shaped plate 4 remains flush with the outer peripheral sidewall of the cylinder 2; Figure 6 As shown, the drain outlet 25 is disposed in the mounting groove 26 and is located on the side wall of the mounting groove 26 near the conveying chamber 21. For example, the drain outlet 25 should be disposed at the bottom of the first water chamber 24 so that the water stored in the first water chamber 24 can be completely discharged through the drain outlet 25.

[0030] In this embodiment, when the arc-shaped plate 4 is in the retracted position, the arc-shaped wall of the arc-shaped plate 4 facing the conveying cavity 21 is completely fitted with the side wall of the mounting groove 26 where the drain outlet 25 is located, thereby achieving the effect of sealing the drain outlet 25 using the side wall of the arc-shaped plate 4. Preferably, in order to improve the sealing performance of the drain outlet 25, an elastic sealing element 44 can be provided on the side wall of the arc-shaped plate 4 facing the conveying cavity 21, which is opposite to the position of the drain outlet 25. This allows the sealing performance of the drain outlet 25 to be improved by squeezing the elastic sealing element 44 when the side wall of the arc-shaped plate 4 facing the conveying cavity 21 and the side wall of the mounting groove 26 where the drain outlet 25 is located are fitted together. For example, the size of the elastic sealing element 44 should be larger than the size of the drain outlet 25. Figure 10 As shown, when the arc plate 4 is in the unfolded position, that is, when part of the arc plate 4 protrudes outward from the mounting groove 26, a drainage gap 28 is formed between the bottom of the arc plate 4 and the bottom of the mounting groove 26. This allows the water discharged from the drain outlet 25 to first enter the space formed between the arc plate 4 and the mounting groove 26, and then flow outward through the drainage gap 28.

[0031] Reference Figure 4 , Figure 5 As shown, in one embodiment of this application, the tobacco seedling transplanting hole-drilling device further includes a telescopic rod 5 for driving the arc-shaped plate 4 to move between a retracted position and an extended position. The telescopic rod 5 can be an electric rod, and the telescopic rod 5 has a fixed end 51 and a telescopic end 52. One of the fixed end 51 and the telescopic end 52 is rotatably mounted on the outer peripheral side wall of the cylinder 2, and the other is rotatably mounted on the upper end of the arc-shaped plate 4. By controlling the telescopic end 52 of the telescopic rod 5 to retract, the arc-shaped plate 4 is driven to the retracted position. By controlling the telescopic end 52 of the telescopic rod 5 to extend, the arc-shaped plate 4 is driven to rotate relative to the mounting groove 26, so that the arc-shaped plate 4 at least partially protrudes outward from the mounting groove 26, thereby causing the arc-shaped plate 4 to move to the extended position.

[0032] In this embodiment, the angle at which the arc plate 4 rotates outward can be controlled by controlling the extension range of the telescopic end 52 of the telescopic rod 5. The larger the angle at which the arc plate 4 rotates outward, the greater the compression of the sidewall of the cavity near the opening (higher compaction), and vice versa. The rotation angle of the arc plate 4 can be set appropriately according to actual operational needs (such as soil moisture). Since the telescopic rod 5 is an electric rod, a battery pack can be integrated inside the fixed end 51 of the telescopic rod 5 to power the telescopic rod 5. The action provides electrical energy; or a battery pack can be installed at a suitable position on the cylinder 2. For example, an upwardly extending extension 27 can be provided coaxially on the upper end face of the cylinder 2. The extension 27 is cylindrical, and the inner side wall of the extension 27 is flush with the inner side wall of the conveying cavity 21 to ensure that the soil can be smoothly conveyed upward. This arrangement makes the extension 27 protrude upward from the cylinder 2. The battery can be installed on the outer peripheral side wall of the extension 27, and the fixed end 51 of the telescopic rod 5 can also be rotatably installed on the outer peripheral side wall of the extension 27.

[0033] In this embodiment, to improve the squeezing effect on the sidewall of the opening 10, the extension of the telescopic rod 5 at its telescopic end 52 can be gradually increased (when the arc plate 4 is in the unfolded position, it includes multiple different angle positions). That is, the telescopic rod 5 drives the arc plate 4 to rotate outward by a certain angle each time, and maintains it at that angle. The rotation of the cylinder 2 synchronously drives several arc plates 4 and squeezes the sidewall of the opening 10 for a certain period of time. Then, the telescopic end 52 of the telescopic rod 5 is controlled to continue to extend to a certain extent, so that the arc plate 4 is maintained at that angle and continues to rotate with the cylinder 2 and squeezes the sidewall of the opening 10 to a greater extent. This achieves graded and multiple squeezing of the sidewall of the opening 10, which can gradually increase the compaction of the soil on the sidewall of the opening 10. Graded and multiple squeezing can rearrange the soil particles to form a denser structure. Graded and multiple squeezing can effectively avoid this situation and ensure that the soil remains stable while still having good physical properties.

[0034] Reference Figure 6 , Figure 7 As shown in one embodiment of this application, the arc-shaped plate 4 is provided with a second water chamber 41 for water storage. The outer peripheral wall of the second water chamber 41, which is away from the conveying chamber 21, is provided with a plurality of spray holes 42, and the spray holes 42 are connected to the second water chamber 41. A control valve 6 is provided in the second water chamber 41. When the arc-shaped plate 4 is in the retracted position, the control valve 6 is driven to block the spray holes 42 to prevent water in the second water chamber 41 from leaking out. When the arc-shaped plate 4 is in the unfolded position, the control valve 6 is driven to open the spray holes 42.

[0035] In this embodiment, as Figure 10As shown, when the cylinder 2 and the auger drill bit 3 move to the preset position in the Z direction, the drilling operation is completed. Then, the cylinder 2 is driven to move slightly upwards in the Z direction, creating a gap between the bottom of the cylinder 2 and the bottom wall of the hole 10. At this point, a spatial gap is formed between the outer peripheral wall of the cylinder 2 and the side wall of the hole 10, causing the arc plate 4 to move from the retracted position to the extended position, thereby squeezing and compacting the side wall of the hole 10 near the opening. When the arc plate 4 moves from the retracted position to the extended position, it opens the drain outlet 25, allowing water in the first water chamber 24 to flow out through the drain outlet 25 and the drainage gap 28 and fall to the bottom of the hole 10. Simultaneously, as the arc plate 4 moves from the retracted position to the extended position, it also simultaneously drives the control valve 6 to open several spray holes 42 located on the outer peripheral wall of the arc plate 4, causing water in the second water chamber 41 to spray out through these spray holes 42. Figure 10 As shown, since the arc plate 4 forms a certain angle with the Z direction at this time, the spray hole 42 is directed towards the side wall of the hole 10. As a result, the water sprayed through the spray hole 42 is sprayed onto the side wall of the hole 10 and flows down along the side wall of the hole 10, thereby achieving the effect of watering and wetting the side wall of the hole 10.

[0036] It should be noted that when the curved plate 4 moves from the retracted position to the unfolded position, the final position angle of the unfolded position should be controlled so that the angle is not too large. This is to avoid the spray hole 42 located on the outer peripheral side wall of the curved plate 4 near the bottom coming into contact with the side wall of the cavity 10 due to the excessive rotation angle of the curved plate 4 in the unfolded position, thereby blocking the spray hole 42 and preventing the water in the second water chamber 41 from being sprayed out through the spray hole 42. The maximum angle that the curved plate 4 can rotate can be adjusted by the user according to the actual situation by controlling the extension of the telescopic rod 5.

[0037] In another embodiment, such as Figure 11As shown, in order to reduce the wetting range of the outer peripheral wall of the cylinder 2 by the water flowing out from the drain gap 28, the arc plate 4 can be made longer in the Z direction. At the same time, the mounting groove 26 that mates with the arc plate 4 is also made longer (in the Z direction) to accommodate the arc plate 4. This makes the drain gap 28 formed between the bottom of the arc plate 4 and the bottom of the mounting groove 26 lower in the Z direction when the arc plate 4 moves from the retracted position to the extended position. This arrangement ensures that when water flows out from the drain gap 28, it will be wetted as much as possible. To minimize the contact area between the outer perimeter of the cylinder 2 and water, the outer perimeter of the cylinder 2 should be covered as little as possible. Because a large contact area between the outer perimeter of the cylinder 2 and water can easily cause dirt to adhere to the water surface during continuous drilling operations, thus affecting drilling (requiring cleaning by the user). Therefore, when setting the arc-shaped plate 4 and the mounting groove 26, the bottom of the arc-shaped plate 4 and the bottom of the mounting groove 26 should be as close as possible to the bottom of the cylinder 2, thereby maximizing the drainage area of ​​the drainage gap 2. 8 is positioned further down relative to the cylinder 2, thereby reducing the contact area between water flowing out from the drain slit 28 and the outer peripheral wall of the cylinder 2 (and thus reducing the area of ​​soil contamination on the outer peripheral wall of the cylinder 2); the position of the spray hole 42 on the outer peripheral wall of the arc plate 4 should be set as far away from the bottom of the hole 10 as possible, so that when water is sprayed out from the open spray hole 42, it can cover the side wall of the hole 10 away from the bottom of the hole 10 as much as possible, thereby achieving watering and wetting of the largest possible area of ​​the side wall of the hole 10; The location of the drainage slit 28 should be as close as possible to the bottom of the hole 10, and the location of the spray hole 42 should be as far away as possible from the bottom of the hole 10 to meet different watering needs. In this embodiment, the water flowing out from the drain outlet 25 and the drainage slit 28 is used to water the bottom of the hole 10, while the water sprayed from the spray hole 42 is used to water and moisten the side walls of the hole 10, thereby achieving watering and moistening as much area as possible inside the hole 10, providing a good growing environment for the transplanting of tobacco seedlings.

[0038] It is understandable that after the tobacco seedlings are placed into the hole 10, the roots of the seedlings mainly contact the bottom of the hole 10; and the roots are geotropic, naturally growing in the direction of gravity; in addition, deeper soil usually contains more nutrients and water, and the roots will grow towards these resource-rich areas; therefore, it is necessary to water the bottom of the hole 10 with sufficient water to provide a good environment for the normal growth of the roots; in this application, the water discharged from the drain outlet 25 will first impact the side wall of the arc plate 4 facing the conveying chamber 21, and after being blocked by this side wall (part of the kinetic energy of the water flow is weakened), the water flows at a slower speed from the drain outlets on both sides. Water flows outward through slit 28, allowing it to flow as far down as possible along the outer perimeter of cylinder 2 to the bottom of hole 10. This prevents water from draining from outlet 25 from contacting the sidewall of hole 10, which would otherwise be absorbed by the soil on the sidewall of hole 10, resulting in insufficient water reaching the bottom of hole 10. Water sprayed from spray hole 42 is mainly used to moisten the sidewall of hole 10, that is, the area of ​​the sidewall away from the bottom of hole 10. This ensures that areas of hole 10 away from the bottom are also moistened, ensuring uniform humidity in all areas of hole 10 and preventing excessive differences in humidity between different areas of hole 10, which would affect the growth of tobacco seedlings.

[0039] Reference Figure 6 , Figure 7 As shown, in one embodiment of this application, the control valve 6 includes an abutment rod 61, a valve plate 62, plugs 63, and an elastic element 64; wherein the abutment rod 61 penetrates the side wall of the second water chamber 41 facing the delivery chamber 21 radially along the delivery chamber 21, and one end of the abutment rod 61 is connected to the valve plate 62 inside the second water chamber 41, and the valve plate 62 is evenly distributed with plugs 63 corresponding to the positions of the spray holes 42 at the end opposite to the abutment rod 61; the elastic element 64 is connected between the valve plate 62 and the side wall of the second water chamber 41 near the delivery chamber 21, and, for example, the elastic element 64 can be a spring or other elastic structural member; when the arc plate 4 is in the retracted position, the arc plate 4 faces the delivery chamber 21. One side wall of the delivery cavity 21 fits against the side wall of the mounting groove 26 with the drain outlet 25, thus forcing the abutment rod 61 to fully retract into the arc-shaped plate 4. At this time, several plugs 63 are simultaneously inserted into the corresponding spray holes 42 to seal the spray holes 42. When the arc-shaped plate 4 is in the unfolded position, since the side wall of the arc-shaped plate 4 facing the delivery cavity 21 no longer abuts against the side wall of the mounting groove 26 with the drain outlet 25, as the arc-shaped plate 4 rotates, the abutment rod 61 continuously extends outward from the second water cavity 41 under the action of the elastic member 64, so that the abutment rod 61 moves to a preset position under the action of the elastic member 64 (e.g., Figure 6 , Figure 12 As shown in the diagram, at this time, the plunger 63 is completely withdrawn from the spray hole 42, and the spray hole 42 is opened, and the water in the second water chamber 41 is sprayed out through the spray hole 42.

[0040] In this embodiment, when the arc plate 4 is in the retracted position and the plunger 63 is inserted into the corresponding spray hole 42, it should be ensured that the end of the plunger 63 away from the valve plate 62 is flush with the outer peripheral sidewall of the arc plate 4, so that the outer peripheral sidewall of the arc plate 4 forms a flush arc surface, so as not to affect the hole drilling operation.

[0041] In this embodiment, the abutment rod 61 can be a circular rod or a square rod. When it is a circular rod, anti-rotation measures need to be set for it so that the abutment rod 61 can only move axially relative to the side wall of the second water cavity 41 facing the delivery cavity 21, and will not rotate circumferentially, so as to prevent the plug 63 from failing to correspond to the corresponding spray hole 42 after the abutment rod 61 rotates, thus preventing the plug 63 from being inserted into the spray hole 42. The plug 63 can be a rigid rod and covered with an elastic rubber layer on its periphery to ensure that the plug 63 can effectively seal the spray hole 42 when it is inserted into the spray hole 42.

[0042] In this embodiment, a plurality of spray holes 42 should be located near the bottom of the second water chamber 41 so that the water in the second water chamber 41 can be sprayed out to the outside as much as possible through the open spray holes 42, and avoid leaving too much water in the second water chamber 41.

[0043] Reference Figure 6 , Figure 7 As shown, in one embodiment of this application, at least one side wall of the first water cavity 24 opposite to the conveying cavity 21 has an elastically deformable portion 43, and the elastically deformable portion 43 constitutes part of the side wall of the first water cavity 24; as Figure 7 As shown, the elastic deformation part 43 should be positioned as close as possible to the outer peripheral sidewall of the arc plate 4 and to the middle region. This is because when the sidewall of the cavity 10 is compressed by the arc plate 4, this position is the area that mainly contacts the sidewall of the cavity 10. Therefore, the elastic deformation part 43 is positioned in this area. The elastic deformation part 43 can be a rubber structural component with elastic deformation characteristics, which will undergo elastic deformation when subjected to external compression. Figure 10As shown, when the arc-shaped plate 4 moves from the retracted position to the extended position, the elastic deformation part 43 just comes into contact with the side wall of the cavity 10 and is used to squeeze the side wall of the cavity 10. This causes the elastic deformation part 43 to be obstructed by the side wall of the cavity 10, which in turn causes the elastic deformation part 43 to be recessed into the second water cavity 41. Because the elastic deformation part 43 is recessed into the second water cavity 41, the space of the second water cavity 41 becomes smaller, which causes the water inside to be subjected to greater pressure, and thus it can be sprayed out from the spray hole 42 at a higher flow rate. This makes the water sprayed from the spray hole 42 more efficient. The water can be sprayed onto the sidewall of the hole 10 to improve the wetting effect on the sidewall of the hole 10. If the elastic deformation part 43 is not provided, when the spray hole 42 is opened, the water in the second water chamber 41 may not have enough water pressure, resulting in a low flow rate when the water is sprayed out of the spray hole 42. This means that only part of the sprayed water can be sprayed onto the sidewall of the hole 10, while the other part cannot be sprayed onto the sidewall of the hole 10 due to gravity and falls down to the sidewall near the bottom of the hole 10, thereby weakening the watering and wetting effect on the sidewall of the hole 10 near the opening.

[0044] It should be noted that the area of ​​the outer peripheral sidewall of the arc plate 4 occupied by the elastic deformation part 43 should satisfy the following: when the telescopic rod 5 drives the arc plate 4 to the unfolded position, only the elastic deformation part 43 should contact the sidewall of the hole 10 as much as possible. This allows the elastic deformation part 43 to be forced to indent into the second water cavity 41 to a greater extent by the compression of the sidewall of the hole 10 (making the internal space of the second water cavity 41 as compressed as possible), thereby allowing water to be sprayed out from the spray hole 42 at a higher flow rate (improving the watering and wetting effect on the sidewall of the hole 10 near the opening).

[0045] In this embodiment, one or two arc-shaped plates 4 may be provided with elastic deformation parts 43, but it is necessary to ensure that at least one arc-shaped plate 4 is not provided with elastic deformation parts 43. This is because the elastic deformation parts 43 have certain elastic deformation characteristics (the elastic deformation parts 43 will be recessed into the second water cavity 41 when obstructed by the side wall of the cavity 10), which will result in insufficient compaction when the side wall of the cavity 10 at the opening is squeezed and compacted. By leaving at least one arc-shaped plate 4 without elastic deformation parts 43 on its outer peripheral side wall, the side wall of the cavity 10 can be squeezed and compacted again by the arc-shaped plate 4 to compensate for the lack of compression and compaction of the side wall of the cavity 10 by the elastic deformation parts 43.

[0046] In this embodiment, as Figure 7As shown, a plurality of spray holes 42 can be disposed below the elastic deformation part 43, or disposed on the outer peripheral sidewall of the arc plate 4 located on both sides of the elastic deformation part 43. Preferably, the spray holes 42 should be disposed below the elastic deformation part 43. This arrangement allows the spray holes 42 to be closer to the bottom of the second water chamber 41, thereby allowing as much water as possible to be discharged from the second water chamber 41 to avoid leaving too much residue.

[0047] Reference Figure 1 , Figure 2 , Figure 3 , Figure 5 As shown, in one embodiment of this application, the tobacco seedling transplanting hole-drilling equipment further includes a water supply component. The water supply component is installed on the frame 1, and the water supply component delivers a preset amount of water to the first water chamber 24 and the second water chamber 41 through the pipe 9. For example, the water supply component can be a water tank installed on agricultural machinery, and the water tank supplies water to the first water chamber 24 and the second water chamber 41 respectively through the pipe 9. For example, the pipe 9 can include an inlet pipe 94 connected to the water tank, and the other end of the inlet pipe 94 is connected to a transfer box 93, and the transfer box 93 is fixedly installed at the bottom of the carrying platform 12. Figure 2 As shown, the transfer box 93 is arranged in a ring shape so that the drive component 7 can pass through the transfer box 93 and be fixedly connected to the support platform 12; as Figure 5 As shown, a main water pipe 91 communicating with the first water chamber 24 is provided on the cylinder 2. The main water pipe 91 includes a pipe section placed outside the cylinder 2 and a pipe section built into the extension 27, which together form the main water pipe 91. The upper end of the main water pipe 91 is connected to the bottom of the transfer box 93. Since the cylinder 2 can rotate relative to the frame 1, as... Figure 3 As shown, a rotating joint plate 931 is provided at the bottom of the transfer box 93. That is, the rotating joint part is rotatably mounted on the bottom wall of the transfer box, and the rotating joint plate 931 is fixedly connected to the upper end of the main water pipe 91, thereby realizing the rotational communication between the main water pipe 91 and the transfer box 93. For example, there may be one or two main water pipes 91, and there is no limitation on the number.

[0048] In this embodiment, as Figure 7 , Figure 8As shown, a water distribution pipe 92 is provided at the upper end of the arc plate 4. The water distribution pipe 92 can be connected to the main water pipe 91 via a flexible hose, thereby achieving the effect of replenishing water into the second water chamber 41. In specific implementation, a solenoid valve can be provided on the inlet pipe 94, and a liquid level sensor (used to detect the liquid level in the transfer box 93) can be provided in the transfer box 93. Both the solenoid valve and the liquid level sensor are communicatively connected to the central processing unit. After completing one acupuncture operation, water needs to be replenished into the first water chamber 24 and the second water chamber 41. At this time, the solenoid valve is controlled to open, so that the water in the water supply component (water tank) flows sequentially to the transfer box 93, the first water chamber 24, and the second water chamber 41, until the water completely fills the first water chamber 24 and the second water chamber 41 and the liquid level in the transfer box 93 reaches the preset value. At this time, the central processing unit controls the solenoid valve to close, thereby stopping the water replenishment operation.

[0049] In this embodiment, when the arc-shaped plate 4 moves from the retracted position to the extended position, the drain outlet 25 and the spray hole 42 are both opened. At this time, the water in the first water chamber 24 and the second water chamber 41 is discharged outward. It should be noted that due to the continuous discharge of water, the water in the first water chamber 24 and the second water chamber 41 is continuously reduced, which causes the water originally in the transfer box 93 and the main water pipe 91 to fill the first water chamber 24 and the second water chamber 41. In order to ensure that the water can flow normally, the upper end of the transfer box 93 can be set... The system is designed to connect with the outside world (i.e., a hole is provided at the top of the transfer box 93 to connect with the outside world). This allows the water in the transfer box 93 to flow normally downward through the main water pipe 91 as water is continuously discharged outward through the drain outlet 25 and the spray hole 42. It is understood that the volume of the transfer box 93 should be set according to the required watering volume so that after one watering operation is completed, the water stored in the transfer box 93, the first water chamber 24, and the second water chamber 41 can reach the predetermined watering volume for each hole 10.

[0050] In this embodiment, the arc-shaped plate 4 with the elastic deformation part 43 needs to be squeezed against the sidewall of the cavity 10 to create an inward concavity and increase the flow rate of water sprayed outward from the spray hole 42. To prevent the water in the second water cavity 41 from flowing back through the water distribution pipe 92 due to the squeezing of the elastic deformation part 43 against the sidewall of the cavity 10, a solenoid valve (communicating with the central processing unit) can be provided on the corresponding water distribution pipe 92. When water is replenished to the first water cavity 24 and each of the second water cavities 41, the central processing unit controls the solenoid valve to open. After the water replenishment operation is completed, the central processing unit controls the solenoid valve to close. This ensures that when the elastic deformation part 43 is squeezed against the sidewall of the cavity 10, the water in the second water cavity 41 will not flow back through the water distribution pipe 92. During the process of the arc plate 4 squeezing and compacting the sidewall of the cavity 10, the elastic deformation part 43 is squeezed and concave into the second water cavity 41, so that the water in the second water cavity 41 flows back through the water distribution pipe 92. The space inside cavity 41 is compressed, causing the internal air pressure to increase, so that the water in the second water cavity 41 can be sprayed out from the spray hole 42 at a higher flow rate; when the arc plate 4 rotates outward to the maximum preset angle position, the elastic deformation part 43 is also compressed to the maximum deformation at the same time. At this time, the central processing unit controls the solenoid valve on the water distribution pipe 92 to open, so that the second water cavity 41 with the elastic deformation part 43 is connected to the transfer box 93, and is used to discharge the water remaining in the second water cavity 41 outward through the spray hole 42; while the water distribution pipe 92 on the arc plate 4 without the elastic deformation part 43 does not need to be equipped with the above-mentioned solenoid valve; for example, in order to improve the water storage capacity of the second water cavity 41, the circumferential dimension of the arc plate 4 can be set to be larger, that is, the angle of the central angle corresponding to the arc plate 4 is larger, thereby making the arc plate 4 have a larger circumferential space for setting the second water cavity 41, thereby improving the water storage capacity of the second water cavity 41.

[0051] In this embodiment, as Figure 5 As shown, in order to prevent the soil discharged from the upper end of the conveying chamber 21 from falling down and covering the arc plate 4, a conical umbrella cap 8 is coaxially provided at the upper end of the extension 27, so that the telescopic rod 5 and the arc plate 4 are both located in the area below the conical umbrella cap 8, which can prevent soil from covering the arc plate 4; at the same time, the setting of the conical umbrella cap 8 helps to guide the soil discharged from the auger bit 3 to a position away from the hole 10, so as to prevent it from falling into the area close to the opening of the hole 10 after the hole is drilled, and causing the soil to be backfilled into the hole 10 again.

[0052] Secondly, this application provides a method for creating planting holes, using the tobacco seedling transplanting hole-creating equipment described in the above embodiments, comprising the following steps: S1: First, the drive unit 7 controls the cylinder 2 and the auger drill bit 3 to rotate at a preset speed.

[0053] S2: In the Z direction, the control frame 1 moves from top to bottom a preset distance and then stops moving. At this time, the initial drilling operation of the hole 10 is completed.

[0054] S3: Subsequently, the drive unit 7 controls the auger drill bit 3 to stop rotating, and drives the cylinder 2 to continue rotating; in the Z direction, it drives the frame 1 to move upward by a preset distance so that a spatial gap is formed between the outer peripheral sidewall of the cylinder 2 and the inner wall of the hole 10.

[0055] S4: Drive the arc plate 4 from the retracted position to the unfolded position to squeeze the cavity wall near the cavity opening, and at the same time open the drain outlet 25 to discharge the water in the first water chamber 24 into the bottom of the cavity through the drain outlet 25.

[0056] In one embodiment of this application, in step S4, the arc plate 4 moves from the retracted position to the unfolded position, squeezing the cavity wall; the cavity wall drives the elastic deformation part 43 to be recessed into the second water cavity 41, so that the water in the second water cavity 41 is sprayed outward through the spray hole 42 at a higher flow rate, for watering and wetting the side wall of the cavity away from the bottom.

[0057] In summary, this solution uses a cylindrical body 2 with a conical outer profile in conjunction with a spiral drill bit 3 to simultaneously expel soil from the hole 10 while drilling, thus avoiding the excessive compaction of the hole 10 wall caused by the traditional method of squeezing soil around the hole 10, which would hinder the root growth of the tobacco seedlings. After drilling, the cylindrical body 2 is moved upwards by a predetermined distance, and the arc-shaped plate 4 is moved from the retracted position to the extended position. This serves two purposes: firstly, it opens the drainage outlet 25 to pour a predetermined amount of water into the bottom of the hole 10; secondly, the arc-shaped plate 4 in the extended position, along with the rotation of the cylindrical body 2, facilitates the drainage of soil from the hole. The wall of the cavity near the opening of the cavity 10 is compacted to a certain extent, which can effectively prevent the wall of the cavity near the opening of the cavity 10 from collapsing and ensure the stability of the cavity 10. In this scheme, when the arc plate 4 moves from the retracted position to the unfolded position, the spray hole 42 on the arc plate 4 is opened, and the wall of the cavity 10 is squeezed by the elastic deformation part 43, which forces the water in the second water chamber 41 to spray outward at a high flow rate, so as to spray water onto the periphery of the cavity 10. Together with the water discharged from the drain outlet 25, the soil inside the cavity 10 is evenly irrigated, providing a good soil environment for the subsequent growth of tobacco seedlings.

[0058] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. A device for digging holes for transplanting tobacco seedlings, having a Z-direction extending along its height direction, characterized in that, include: The frame (1) is arranged to move along the Z direction; The cylinder (2) is rotatably mounted on the frame (1); In the Z direction, the outer periphery of the cylinder (2) has a large-diameter end (22) located above and a small-diameter end (23) located below; in the Z direction, a conveying cavity (21) is provided through the cylinder (2); A spiral drill bit (3) is housed in the conveying cavity (21). In the Z direction, at least a portion of the spiral drill bit (3) extends upward out of the conveying cavity (21) for rotatable mounting on the frame (1). An arc-shaped plate (4) is rotatably mounted on the outer periphery of the cylinder (2). The arc-shaped plate (4) has a retracted position and an extended position. The arc-shaped plate (4) is in the retracted position and is flush with the outer periphery of the cylinder (2). The arc-shaped plate (4) is in the extended position and is used to squeeze the cavity wall. Multiple arc-shaped plates (4) are provided, and multiple arc-shaped plates (4) are arranged at intervals around the periphery of the cylinder (2). as well as A first water cavity (24) is provided inside the cylinder (2). The cylinder (2) is provided with a drain outlet (25) communicating with the first water cavity (24). The arc plate (4) is in the retracted position to block the drain outlet (25). The arc plate (4) is in the unfolded position to open the drain outlet (25). The arc-shaped plate (4) is provided with a second water cavity (41) for water storage, and the outer peripheral wall of the second water cavity (41) facing away from the conveying cavity (21) is provided with a spray hole (42); The second water chamber (41) is equipped with a control valve (6), and the arc plate (4) is in the retracted position, which drives the control valve (6) to block the spray hole (42); When the arc-shaped plate (4) is in the unfolded position, it drives the control valve (6) to open the spray hole (42); At least one of the first water cavities (24) has an elastically deformable portion (43) on one side wall away from the delivery cavity (21), the elastically deformable portion (43) forming part of the side wall of the first water cavity (24); In the Z direction, the spray hole (42) is located below the elastic deformation part (43) and / or on the outer wall of the arc plate (4) on both sides of the elastic deformation part (43) along its circumferential direction, and at least one arc plate (4) is not provided with an elastic deformation part (43).

2. The tobacco seedling transplanting hole-digging equipment as described in claim 1, characterized in that, The outer peripheral sidewall of the cylinder (2) is provided with an installation groove (26) for rotatably installing the arc plate (4), and the drain outlet (25) is provided on the sidewall of the installation groove (26) near the conveying cavity (21); The arc-shaped plate (4) is in the retracted position, the arc-shaped plate (4) is completely accommodated in the mounting groove (26), and the drain outlet (25) is blocked; The arc-shaped plate (4) is in the unfolded position, and the arc-shaped plate (4) extends at least partially outward from the mounting groove (26), opens the drain outlet (25), and squeezes the cavity wall.

3. The tobacco seedling transplanting hole-digging equipment as described in claim 1, characterized in that, The tobacco seedling transplanting hole-drilling equipment also includes a telescopic rod (5) for driving the arc plate (4) to move between the retracted position and the extended position; The telescopic rod (5) has a fixed end (51) and a telescopic end (52). One of the fixed end (51) and the telescopic end (52) is rotatably mounted on the outer peripheral side wall of the cylinder (2), and the other is rotatably mounted on the arc plate (4).

4. The tobacco seedling transplanting hole-digging equipment as described in claim 1, characterized in that, The control valve (6) includes: An abutment rod (61) is slidably mounted radially within the second water cavity (41) of the conveying cavity (21), with one end of the abutment rod (61) extending outward from the second water cavity (41) towards the conveying cavity (21); and A valve plate (62) is disposed in the second water chamber (41), and the valve plate (62) is fixedly installed on the end of the abutment rod (61) away from the conveying chamber (21); A plunger (63) is fixedly disposed on the side of the valve plate (62) away from the abutment rod (61), and the plunger (63) is correspondingly disposed with the spray hole (42); An elastic element (64) is connected between the valve plate (62) and the second water chamber (41); the arc plate (4) is in the retracted position, so that the abutment rod (61) is completely retracted into the arc plate (4), and the plug (63) is used to block the spray hole (42); the arc plate (4) is in the extended position, the elastic element (64) drives the abutment rod (61) to extend at least partially outward into the second water chamber (41), and the plug (63) withdraws from the spray hole (42) and opens the spray hole (42).

5. The tobacco seedling transplanting hole-digging equipment as described in claim 1, characterized in that, The tobacco seedling transplanting hole-digging equipment also includes a water supply component, which is installed on the frame (1); The water supply assembly is used to deliver a preset amount of water into the first water chamber (24) and the second water chamber (41).

6. The tobacco seedling transplanting hole-digging equipment as described in claim 1, characterized in that, The tobacco seedling transplanting hole-digging equipment also includes a drive component (7); The drive unit (7) is installed on the frame (1), and the drive unit (7) is used to drive the cylinder (2) and the auger drill bit (3) to rotate at a preset speed.

7. A method for creating planting holes, using the tobacco seedling transplanting hole-creating equipment as described in any one of claims 1-6, characterized in that, Includes the following steps: S1: First, the cylinder (2) and the auger drill bit (3) are controlled to rotate at a preset speed by the drive component (7); S2: In the Z direction, control the frame (1) to move from top to bottom a preset distance and then stop moving; S3: The drive unit (7) controls the auger drill bit (3) to stop rotating and drives the cylinder (2) to continue rotating; in the Z direction, it drives the frame (1) to move upward by a preset distance; S4: Drive the arc plate (4) from the retracted position to the unfolded position to squeeze the cavity wall near the cavity opening, and at the same time open the drain outlet (25) to discharge the water in the first water cavity (24) into the bottom of the cavity through the drain outlet (25).

8. The acupressure method as described in claim 7, characterized in that, In S4, the arc-shaped plate (4) moves from the retracted position to the unfolded position, squeezing the cavity wall; The cavity wall drives the elastic deformation part (43) to indent into the second water cavity (41), so that the water in the second water cavity (41) is sprayed out at a higher flow rate.

Images