A rhubarb seedling transplanting hole digging device and application thereof

Abstract

The application discloses a rhubarb seedling transplanting hole digging device and application thereof, and relates to the technical field of rhubarb seedling transplanting, which comprises a hole digging vehicle, wherein the advancing direction of the hole digging vehicle head is defined as the front end, a material guiding assembly is arranged on the top of the hole digging vehicle, the material guiding assembly comprises a cover plate which is arranged on the top of the hole digging vehicle and is hinged to one side of the top of the hole digging vehicle, a material dropping hole is arranged in the top of the cover plate, and two bottom plate pieces are threadedly arranged on the top of the cover plate. The rhubarb seedling transplanting hole digging device and application thereof can realize flexible adjustment of different transplanting intervals of rhubarb seedlings in the transverse direction by twisting the long screw rod into the cover plate body, pushing the wide edge cylinder to the side of the telescopic rod by the long screw rod, and changing the interval of the hole digging assembly in the transverse direction, and can adjust the size of the rhubarb seedling and the area of the land which can be planted.

Description

Technical Field

[0001] This invention relates to the field of rhubarb seedling transplanting technology, specifically to a rhubarb seedling transplanting hole-digging device and its application. Background Technology

[0002] Rhubarb is a common Chinese medicinal herb, specifically the rhubarb plant (Rheum palmatum) belonging to the Polygonaceae family. Both its roots and rhizomes are used medicinally. It has the effects of purging stagnation, clearing heat and purging fire, cooling blood and detoxifying, and promoting blood circulation and removing blood stasis. It is mainly used to treat constipation due to stagnation, hematemesis due to blood heat, red eyes and sore throat, sores due to heat toxins, burns, various blood stasis syndromes, damp-heat dysentery, jaundice, and urinary tract infections. Because of its high medicinal value, rhubarb is widely cultivated, and the cultivation area is increasing. Therefore, there is a need for a digging device that can assist in the transplanting of rhubarb seedlings.

[0003] However, most current methods for digging holes for rhubarb seedlings are done manually. This is not only inefficient but also labor-intensive and time-consuming. Furthermore, some workers use equipment from other fields for digging holes for rhubarb seedlings. While this saves manpower and provides the digging function, it doesn't meet the specific needs of rhubarb seedling transplanting. It also fails to adjust the horizontal spacing and vertical depth of the holes based on the size of the seedlings and the available planting area. The resulting digging is often crude, either too large or too shallow, making direct transplanting of the rhubarb seedlings impossible. Summary of the Invention

[0004] To achieve the above objectives, the present invention provides the following technical solution: a rhubarb seedling transplanting hole-digging device and its application, comprising a hole-digging machine, with the forward direction of the hole-digging machine's front end as the front end. A material guiding assembly is installed on the top of the hole-digging machine, the assembly including a cover plate that fits over the top of the hole-digging machine, one side of which is hinged to the top of the machine. A material drop hole is provided through the top of the cover plate. Two base plates are also threaded onto the top of the cover plate, and each base plate has a symmetrically installed inclined conveyor belt at its top edge, arranged at an incline. By setting two base plates, the rhubarb seedlings are clamped and conveyed by an inclined conveyor belt, and the rhubarb seedlings can be conveyed simultaneously from both sides of the digging machine, realizing bidirectional feeding. The top of each of the two base plates is equipped with four valve covers, which are used to control the connection and closure of the holes for installing valve covers on the top of the base plates and the material dropping holes. Each pair of valve covers corresponds to one base plate. The specific opening of the material dropping holes on the cover plates is as follows: four material dropping holes in one row of four columns are opened near the front end of the cover plate, and four material dropping holes in two rows of two columns are opened near the front end of the cover plate.

[0005] It also includes a lifting assembly, which is installed on the inside of the digging machine. The lifting assembly includes a horizontal plate frame installed on the inside of the digging machine. A first vertical plate is fixedly installed at the rear end of the horizontal plate frame, and a second vertical plate is fixedly installed at the front end of the horizontal plate frame. A clamping plate is slidably installed on the middle of the inner side of the first and second vertical plates. A hydraulic cylinder is fixedly installed at the bottom end of the clamping plate, and the bottom flange of the hydraulic cylinder is installed on the horizontal plate frame. The end of the clamping plate away from the horizontal plate frame is fixedly connected to the inner wall of the digging machine.

[0006] A plate frame assembly is mounted on the lifting component. A top plate and a bottom plate are installed between the second vertical plate and the rotating shaft. There are two bottom plates, which are installed side by side at the bottom of the top plate. A mating component is installed side by side on the side of the top plate. Two peristaltic tubes are installed between the top plate and the bottom plate, and between the mating component and the other bottom plate. There are a total of four peristaltic tubes. The top plate and the corresponding bottom plate at its bottom have the same structure. The mating component and the corresponding bottom plate at its bottom have the same structure. The mating component and the top plate are symmetrically installed on the left and right sides of the horizontal plate frame.

[0007] A pit-digging assembly is installed at the bottom of a plate frame assembly. The pit-digging assembly includes a bottom ring installed at the bottom of a bottom plate, a pit-digging gripper installed at the bottom of the bottom ring, and a lifting ring snapped onto the top of the bottom ring, allowing the bottom ring to rotate around its own axis under the limiting position of the lifting ring. Four air valve rods are connected in a circular array at the top of the lifting ring, and a base is fixedly connected to the top of each air valve rod. The top of the base is threaded onto the bottom edge ring of the wide-side cylinder. The top of the air valve rod passes through the base and communicates with the chamber between the outer hose and the inner hose.

[0008] Preferably, a rotating shaft is fitted at the top of the horizontal plate near the middle, allowing it to rotate around its own axis. A first spur gear is fixedly installed on the top of the rotating shaft. A servo motor is fixedly installed on the side of the second vertical plate facing the first vertical plate. A long horizontal bar connects the servo motor and the first vertical plate. A second spur gear is fixedly installed on the long horizontal bar, and the second spur gear meshes with the first spur gear. The long horizontal bar is rotatably mounted to the first vertical plate via the servo motor. A piston pump is fixedly installed on the top right side of the second vertical plate.

[0009] Preferably, both the top plate and the mating component are equipped with two sleeve components. A first corner ring is fixedly connected to one corner of the top plate near the mating component. The top of the first corner ring has an annular groove, and double annular wall teeth are fixedly installed on the inner side wall of the annular groove. A second corner ring is fixedly connected to one corner of the mating component near the top plate. A small toothed rod is fixedly installed at the bottom of the second corner ring. The small toothed rod meshes with the double annular wall teeth through the annular groove. The top plate is installed with the pivot pin through the first corner ring, and the mating component is fitted with the pivot pin through the second corner ring. Similarly, the bottom plate at the bottom of the top plate is installed with the pivot pin, and the other bottom plate at the bottom of the mating component is installed with the pivot pin.

[0010] Preferably, the peristaltic fitting includes an outer hose installed inside a sleeve, an inner hose installed inside the outer hose, and neck rings fixedly connected to the surfaces of both the inner and outer hoses to increase the toughness and folding flexibility of the hose structure. A capping ring is installed at the top of both the outer and inner hoses, and a spiral air tube is fixedly inserted into the top of the capping ring for connection to a piston pump. A guide bucket is threaded into the center of the top of the capping ring to guide the rhubarb seedlings falling through the discharge hole into the inner hose.

[0011] Preferably, the mating component includes a mating plate body with a pin mounted on the rotating shaft, a through hole is provided at the mounting position on the mating plate body, a long screw is threadedly installed on the side of the mating plate body away from the top plate, and a telescopic rod is installed inside the through hole and symmetrically installed on the opposite side of the long screw.

[0012] Preferably, the sleeve includes a wide-side cylinder, which is assembled and installed with the mounting plate body through a through hole. One end of a long screw is rotatably installed with the wide-side cylinder near its end. One end of a telescopic rod is connected to the inner wall of the through hole, and the other end is connected to the wide-side cylinder. The wide-side cylinder is movably installed with the mounting plate body through the cooperation of the telescopic rod and the long screw.

[0013] Preferably, a spring ring is fixedly installed in the middle of the wide-side tube. Two waist-shrinking spring strips are symmetrically connected to the outer surface of the spring ring. A weighted ball is clamped in the middle of each of the two waist-shrinking spring strips. A guide rod is connected through the middle of the weighted ball. One end of the waist-shrinking spring strip is connected to the spring ring, and the other end is connected to the inner wall of the through hole. An outer flexible tube is fitted and installed inside the wide-side tube.

[0014] Preferably, two lifting rods are centrally symmetrically installed on the sides of the bottom ring, and the top of the lifting rods is fixedly installed on the bottom ring of the wide-side cylinder. An auxiliary gear is installed at the bottom of the lifting rod, and a baffle is fixedly installed at the bottom of the auxiliary gear. An outer wall tooth is fixedly installed on the outer surface of the bottom ring, and the auxiliary gear meshes with the outer wall tooth. A stepper motor is also installed on the bottom ring of the wide-side cylinder, and a main gear is installed at the bottom of the stepper motor, which meshes with the outer wall tooth. The bottom ring is rotated and installed with the lifting ring through the cooperation of the main gear and the outer wall tooth.

[0015] Preferably, the pit-digging gripper includes scraper plates fixedly installed at the bottom of the bottom ring, arranged in a circular array. The scraper plates have through-cuts on their sides. Spiral scrapers are fixedly connected to the outer surface of the scraper plates, arranged in a spiral shape. An extension bladder is connected between every two adjacent scraper plates. The entire assembly is made of thickened and wear-resistant material, and the extension bladders are also spiral-shaped, allowing them to be stretched and automatically spring back. An air-guiding and rebounding plate is fixedly connected to the top edge of the outer surface of the scraper plates. The unit is assembled with the bottom ring via a spring-loaded air guide plate. The bottoms of the outer and inner hoses are inserted into the inner side of the bottom ring through a sleeve on the bottom plate. The bottom ends of the outer and inner hoses are connected and closed, so that the interlayer chamber between the outer and inner hoses is independent of the outside air when the top of the outer and inner hoses is sealed by the cap ring. The bottom of the air valve rod is connected to the extension bladder through the bottom ring and the air guide plate. The air valve rod is used to control the opening and closing of the airflow path connecting the extension bladder with the outer and inner hoses.

[0016] The application of a device for digging holes for transplanting rhubarb seedlings includes the following steps:

[0017] Step 1: According to the number of planting rows of the seedlings to be transplanted, install the two base plates on the four rows of material dropping holes on the top of the hole digging machine, or on the two rows of two material dropping holes.

[0018] Step 2: Start the inclined conveyor belt to deliver the rhubarb seedlings to each valve cover. After aligning the rhubarb seedlings with the top of the valve cover, open the valve cover and piston pump at the same time. The rhubarb seedlings are then introduced into the inner hose through the drop hole and guide bucket. The piston pump agitates the air between the outer hose and the inner hose, causing local peristalsis in the peristaltic tube and guiding the rhubarb seedlings into the bottom ring. This allows the rhubarb seedlings to enter the funnel-shaped chamber formed by the pit-digging grabbing parts.

[0019] Step 3: Simultaneously start the stepper motor and hydraulic cylinder. The hydraulic cylinder drives the lifting assembly to descend as a whole, while the stepper motor drives the main gear to rotate counterclockwise. This, through meshing with the outer wall gear, drives the digging grab to rotate clockwise at the bottom of the bottom ring. The digging grab digs a hole in the ground. After digging, the hydraulic cylinder drives the lifting assembly to rise back inside the digging machine. Then, by opening the air valve rod, the piston pump is controlled to inflate the guide air rebound plate, causing the closed scraper to open and vertically transport the rhubarb seedling into the hole, completing the automatic digging and transplanting process of the rhubarb seedling.

[0020] After the lifting assembly returns to its initial position, the piston pump is activated to extract the air from the extension chamber, causing the scraper blade to close back into a funnel shape. Then the air valve rod is closed, and the above operation is repeated to enter the automatic digging and transplanting cycle for the next batch of rhubarb seedlings.

[0021] This invention provides a device for digging holes for transplanting rhubarb seedlings and its application, which has the following beneficial effects:

[0022] I. The rhubarb seedling transplanting hole-digging device and its application: Through a hydraulic cylinder, the vertical descent height of the hole-digging assembly at the bottom of the bottom plate, which is installed on the horizontal plate frame, is controlled to control the hole-digging depth of the hole-digging assembly in the soil. It can be combined with the specific length of the rhubarb seedling root to achieve precise control of the planting depth of the rhubarb seedling.

[0023] II. The rhubarb seedling transplanting hole-digging device and its application: By starting the servo motor, the second vertebral gear on the long crossbar rotates. Through the meshing transmission between the second vertebral gear and the first vertebral gear, the rotating shaft rotates clockwise, which in turn drives the top plate and its corresponding bottom plate to rotate counterclockwise. This drives the mating parts and another bottom plate to rotate clockwise around the rotating shaft. As a result, the guide buckets on the four peristaltic tubes, corresponding to the bottom of the four material dropping holes in the two rows and two columns at the rear end of the cover plate, are automatically clamped and guided by the material guiding assembly to achieve automatic switching between one row and four columns and two rows and two columns of automatic hole digging and transplanting functions for rhubarb seedlings.

[0024] III. The rhubarb seedling transplanting hole-digging device and its application: When the hole-digging assembly is in its initial one-row-four-column structural installation state, combined with the frame assembly, lifting component, and material guide assembly, the device can automatically dig one row of four rows of holes, resulting in a wide planting area and a large operating range. When the device automatically switches to a two-row-two-column working mode, it can automatically dig two rows of two rows of holes, resulting in a longer planting distance, faster planting speed, and higher transplanting efficiency for rhubarb seedlings. This allows growers to choose the appropriate mode of use based on the actual weather conditions, the freshness of the rhubarb seedlings, the planting area of ​​the land, and the available transplanting time.

[0025] IV. The rhubarb seedling transplanting hole-digging device and its application utilize the reciprocating operation of a piston pump to fill and extract air between the outer and inner hoses. This causes the neck rings on the outer and inner hoses to continuously contract and expand, achieving self-peristalsis within the peristaltic tube. This provides non-contact and non-damaging auxiliary peristalsis and feeding for rhubarb seedlings stuck inside the inner hose. It can prevent larger rhubarb seedlings from clogging the inner hose and utilize the smooth structure inside the inner hose to achieve a non-contact and non-damaging peristaltic anti-clogging feeding function for the rhubarb seedlings.

[0026] V. The device for digging holes for transplanting rhubarb seedlings and its application: By having the bottom of the outer hose fit snugly against the inner wall of the lifting ring, the vibration generated when the digging grab is digging the transplanting hole can be transmitted to the peristaltic tube through the bottom ring and the lifting ring. This provides an additional vibration and material release effect during the peristaltic tube's transport of rhubarb seedlings, further promoting the peristaltic feeding of rhubarb seedlings by the peristaltic tube, and helping the inner hose to avoid material blockage inside the rhubarb seedlings.

[0027] VI. The rhubarb seedling transplanting hole-digging device and its application provide flexible feeding methods for rhubarb seedlings by controlling the installation position of the two base plates on the cover plate. It can be used in a front-and-rear feeding method, or in a method where both are fed from the front or both from the rear. At the same time, the feeding direction is diverse and can be used to meet different transplanting needs. It can be used in combination with the limited space on the hole-digging machine for placing rhubarb seedlings, as well as for different planting rows of rhubarb seedlings.

[0028] VII. The device for digging holes for transplanting rhubarb seedlings and its application: By starting the digging machine, the digging assembly is driven forward to dig holes and transplant rhubarb seedlings at the next location. The operator needs to sit on the digging machine and control the direction of movement and the duration of the digging machine's pauses to achieve automatic digging and transplanting of rhubarb seedlings.

[0029] 8. The device for digging holes for transplanting rhubarb seedlings and its application: When the digging grabber excavates the transplanting hole, it transmits the vibration generated to the peristaltic tube to the peristaltic tube. This further causes the two waist-tightening elastic strips on the spring ring to sway between the wide-side cylinder and the inner wall of the through hole. The guide rod on the load ball can randomly impact the spring ring, expanding the amplitude of the peristaltic tube and thus further increasing the overall shaking amplitude of the peristaltic tube. Combined with the dual effects of the peristaltic tube's own peristalsis and shaking, the peristaltic tube can quickly discharge material without causing blockage.

[0030] 9. The rhubarb seedling transplanting hole-digging device and its application: By twisting the long screw inside the plate, the long screw pushes the wide-side cylinder closer to one side of the telescopic rod, changing the spacing of the hole-digging assembly in the horizontal direction. This allows for precise control of the spacing between the holes to be dug for each row of rhubarb seedlings, and thus flexible adjustment of the different transplanting spacing of rhubarb seedlings in the horizontal direction. It can be adjusted in real time based on the size of the rhubarb seedlings and the amount of arable land.

[0031] 10. The device for digging holes for transplanting rhubarb seedlings and its application, through the notch, can provide space for the scraper blades to retract and expand outwards, while providing a window for air circulation between the inside of the hole-digging gripper and the outside, preventing the inside of the hole-digging gripper from becoming too dry, and avoiding the rhubarb seedlings temporarily located inside the hole-digging gripper in a high-temperature environment from becoming stuffy and scorched.

[0032] XI. The rhubarb seedling transplanting hole-digging device and its application utilize a spiral scraper installed on the outer surface of the scraper plate to allow the hole-digging grab to drill downwards into the soil and throw the soil outwards along the guide of the spiral scraper. It can also break up any hard clods and gravel in the soil, destroy the roots of weeds, and remove them from the hole. This avoids the resistance encountered during manual digging and the tedious process of cleaning weed roots, providing a good planting environment for rhubarb seedlings.

[0033] 12. The rhubarb seedling transplanting hole-digging device and its application: The auxiliary gear and the main gear work together to drive the bottom ring to rotate at the bottom of the lifting ring. The baffle plate covers the bottom of the outer wall teeth. Together with the locking device of the bottom ring at the bottom of the lifting ring, the position of the bottom ring is simultaneously limited in the horizontal and vertical directions. This ensures that the outer wall teeth and the main gear are always meshed. At the same time, it ensures that the hole-digging grab is not blocked by strong weed roots when digging the hole, so as to prevent the outer wall teeth and the main gear from being misaligned. This ensures the smooth operation of the hole-digging grab. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the external structure of a rhubarb seedling transplanting hole digging device and its application according to the present invention.

[0035] Figure 2 This is a schematic diagram of the internal structure of the hole-digging machine of the present invention;

[0036] Figure 3 This is a schematic diagram of the material guiding assembly of the present invention;

[0037] Figure 4 This is a side view of the lifting assembly and plate frame assembly of the present invention;

[0038] Figure 5 This is a schematic diagram of the lifting assembly and the plate frame assembly of the present invention;

[0039] Figure 6 This is a schematic diagram of the structural deformation of the plate frame assembly of the present invention;

[0040] Figure 7 This is a schematic diagram showing the disassembled structure of the top plate and mating parts of the present invention;

[0041] Figure 8 for Figure 7 Enlarged view of the structure of A in the middle;

[0042] Figure 9 This is a schematic diagram of the peristaltic tube of the present invention;

[0043] Figure 10 This is a schematic diagram of the structure of the mating component of the present invention;

[0044] Figure 11 for Figure 10 Enlarged view of the structure of B in the middle;

[0045] Figure 12 This is a schematic diagram of the sleeve component of the present invention;

[0046] Figure 13 This is a schematic diagram of the structure of the bottom plate and bottom ring of the present invention;

[0047] Figure 14 This is a schematic diagram of the structure of the pit-digging assembly of the present invention;

[0048] Figure 15 This is a schematic diagram of the structure of the bottom ring and the lifting ring of the present invention;

[0049] Figure 16 This is a schematic diagram of the structure of the hole-digging gripper of the present invention;

[0050] Figure 17 This is a schematic diagram of the scraper blade of the present invention;

[0051] Figure 18 This is a schematic diagram of the structure of the hole-digging gripper of the present invention;

[0052] Figure 19 This is a schematic diagram of the airflow path between the valve stem and the air guide rebound plate of the present invention.

[0053] In the diagram: 1. Digging machine; 2. Material guide assembly; 21. Cover plate; 22. Drop hole; 23. Bottom plate; 24. Inclined conveyor belt; 26. Valve cover; 3. Lifting assembly; 31. Horizontal plate frame; 32. First vertical plate; 33. Second vertical plate; 34. Clamping plate; 35. Hydraulic cylinder; 36. Rotating shaft; 37. First bevel gear; 38. Long crossbar; 39. Servo motor; 310. Second bevel gear; 311. Piston pump; 4. Plate frame assembly; 41. Top plate; 42. Bottom plate; 43. Peristaltic tube; 44. Mating parts; 45. Sleeve; 46. First corner ring; 47. Second corner ring; 48. Small gear; 49. Ring groove; 410. Double ring wall teeth; 431. External hose; 4 32. Inner hose; 433. Neck ring; 434. Sealing ring; 435. Spiral air tube; 436. Guide bucket; 441. Plate body; 442. Through hole; 443. Long screw; 444. Telescopic rod; 451. Wide side tube; 452. Spring ring; 453. Waist-reducing spring strip; 454. Weight ball; 455. Guide rod; 5. Digging assembly; 51. Bottom ring; 52. Digging gripper; 53. Lifting rod; 54. Auxiliary gear; 55. Baffle plate; 56. Lifting ring; 57. Stepper motor; 58. Main gear; 59. Valve rod; 510. Base; 511. Outer wall teeth; 521. Scraper blade; 522. Notch; 523. Spiral scraper; 524. Extension bladder; 525. Air guide rebound plate. Detailed Implementation

[0054] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and design various embodiments with various modifications suitable for a particular purpose.

[0055] First embodiment, such as Figures 1 to 19As shown, the present invention provides a technical solution: a rhubarb seedling transplanting hole-digging device and its application, including a hole-digging machine 1. With the forward direction of the hole-digging machine 1 as the front end, a material guiding assembly 2 is installed on the top of the hole-digging machine 1. The material guiding assembly 2 includes a cover plate 21 that covers the top of the hole-digging machine 1, and one side of the cover plate 21 is hinged to the top of the hole-digging machine 1. A material dropping hole 22 is provided through the top of the cover plate 21. Two base plate components 23 are also threadedly installed on the top of the cover plate 21. Each base plate component 23... The top edge of the 3 is symmetrically equipped with inclined conveyor belts 24, which are set at an inclination. Through the setting of the two bottom plate parts 23, the rhubarb seedlings are clamped and conveyed by the inclined conveyor belts 24. The rhubarb seedlings can be conveyed from both sides of the digging machine 1 at the same time, realizing bidirectional feeding. The top of the two bottom plate parts 23 is equipped with four valve covers 26, which are used to control the connection and closure of the holes of the valve covers 26 on the top of the bottom plate parts 23 and the material drop hole 22. Each pair of valve covers 26 corresponds to one bottom plate part 23.

[0056] It also includes a lifting assembly 3, which is installed inside the digging machine 1. The lifting assembly 3 includes a horizontal plate frame 31 installed inside the digging machine 1. A first vertical plate 32 is fixedly installed at the rear end of the horizontal plate frame 31, and a second vertical plate 33 is fixedly installed at the front end of the horizontal plate frame 31. A clamping plate 34 is slidably installed in the middle of the inner side of the first vertical plate 32 and the second vertical plate 33. A hydraulic cylinder 35 is fixedly installed at the bottom end of the clamping plate 34, and the bottom flange of the hydraulic cylinder 35 is installed on the horizontal plate frame 31. The end of the clamping plate 34 away from the horizontal plate frame 31 is fixedly connected to the inner wall of the digging machine 1.

[0057] A plate frame assembly 4 is mounted on the lifting assembly 3. A top plate 41 and a bottom plate 42 are installed between the second vertical plate 33 and the rotating shaft 36. There are two bottom plates 42, which are installed side by side at the bottom of the top plate 41. A mating part 44 is installed side by side on the side of the top plate 41. Two peristaltic tubes 43 are installed between the top plate 41 and the bottom plate 42, and between the mating part 44 and the other bottom plate 42. There are a total of four peristaltic tubes 43. The top plate 41 and the bottom plate 42 at its bottom have the same structure. The mating part 44 and the bottom plate 42 at its bottom have the same structure. The mating part 44 and the top plate 41 are symmetrically installed on the left and right sides of the horizontal plate frame 31.

[0058] The digging assembly 5 is installed at the bottom of the plate frame assembly 4. The digging assembly 5 includes a bottom ring 51 installed at the bottom of the bottom plate 42. A digging gripper 52 is installed at the bottom of the bottom ring 51. A lifting ring 56 is snapped onto the top of the bottom ring 51, which allows the bottom ring 51 to rotate around its own axis under the snapping limit of the lifting ring 56. Four air valve rods 59 are connected in a circular array at the top of the lifting ring 56. A base 510 is fixedly connected to the top of the air valve rods 59. The top of the base 510 is threaded onto the bottom edge ring of the wide-side cylinder 451. The top of the air valve rods 59 passes through the base 510 and communicates with the chamber between the outer hose 431 and the inner hose 432.

[0059] A pivot rod 36 is mounted near the center of the top of the horizontal plate frame 31, allowing it to rotate around its own axis. A first spur gear 37 is fixedly mounted on the top of the pivot rod 36. A servo motor 39 is fixedly mounted on the side of the second vertical plate 33 facing the first vertical plate 32. A long horizontal bar 38 connects the servo motor 39 and the first vertical plate 32. A second spur gear 310 is fixedly mounted on the long horizontal bar 38, and the second spur gear 310 meshes with the first spur gear 37. The long horizontal bar 38 is rotatably mounted to the first vertical plate 32 via the servo motor 39. A piston pump 311 is fixedly mounted on the top right side of the second vertical plate 33.

[0060] Working principle: Before use, according to the number of rows of seedlings to be transplanted, install the two base plate pieces 23 on the four rows of material dropping holes 22 on the top of the hole digging machine 1, or install them on the two rows of two material dropping holes 22.

[0061] Start the inclined conveyor belt 24 to convey the rhubarb seedlings to each valve cover 26. After the rhubarb seedlings are aligned with the top of the valve cover 26, open the valve cover 26 and the piston pump 311 at the same time. The rhubarb seedlings are introduced into the inner hose 432 through the drop hole 22 and the guide bucket 436. The piston pump 311 agitates the air between the outer hose 431 and the inner hose 432, causing the peristaltic tube 43 to peristalse locally and guide the rhubarb seedlings into the bottom ring 51, so that the rhubarb seedlings come into the funnel-shaped cavity formed by the digging grab 52.

[0062] Simultaneously, stepper motor 57 and hydraulic cylinder 35 are started. Hydraulic cylinder 35 drives the lifting assembly 3 to descend as a whole, while stepper motor 57 drives main gear 58 to rotate counterclockwise. This, through meshing with outer wall gear 511, drives the digging gripper 52 to rotate clockwise at the bottom of bottom ring 51. The descending digging gripper 52 digs a hole in the ground. After digging, stepper motor 57 is turned off, digging gripper 52 stops rotating, and hydraulic cylinder 35 drives the lifting assembly 3 to rise again inside the digging machine 1. Open the air valve rod 59 to control the piston pump 311 to inflate the air guide spring plate 525, causing the closed scraper plate 521 to open and vertically transport the rhubarb seedlings into the digging hole, thus completing the automatic digging and transplanting process of the rhubarb seedlings. After planting, start the digging machine 1 to drive the digging assembly 5 forward to dig the hole and transplant the rhubarb seedlings at the next location. The operator needs to sit on the digging machine 1 and control the forward direction and the duration of the digging machine 1's pause to achieve automatic digging and transplanting of the rhubarb seedlings.

[0063] After the lifting assembly 3 returns to its initial position, the piston pump 311 is activated to extract the air from the extension bladder 524, causing the scraper blade 521 to close back into a funnel shape. Then the air valve rod 59 is closed, and the above operation is repeated to enter the automatic digging and transplanting cycle for the next batch of rhubarb seedlings.

[0064] The device can control the installation position of the two base plates 23 on the cover plate 21 to achieve corresponding installation of the two base plates 23 with the four drop holes 22 in a row of four columns at the front end of the cover plate 21, or to achieve corresponding installation of the two base plates 23 with the four drop holes 22 in two rows of two columns at the rear end of the cover plate 21. This enables the two base plates 23 to feed the rhubarb seedlings horizontally side by side on both sides via the inclined conveyor belt 24, or to feed the rhubarb seedlings side by side at the front or rear end of the cover plate 21 via the inclined conveyor belt 24. In this mode, the feeding method of the rhubarb seedlings is more flexible. It can adopt a front-and-rear feeding method, or it can adopt a method of feeding both the front end or both the rear end at the same time. The feeding direction is diverse and corresponds to different transplanting needs. It can be used in combination with the limited space on the hole digging machine 1 for placing rhubarb seedlings, as well as for different planting rows of rhubarb seedlings.

[0065] Furthermore, the hydraulic cylinder 35 can control the vertical descent height of the digging assembly 5 at the bottom of the bottom plate 42, which is mounted on the horizontal plate frame 31, thereby controlling the digging depth of the digging assembly 5 in the soil. This allows for precise control of the planting depth of the rhubarb seedlings by combining the specific length of the rhubarb seedling's rootstock.

[0066] The second embodiment is based on the first embodiment; please refer to [link / reference]. Figures 4 to 12 As shown, two sleeves 45 are installed on both the top plate 41 and the mating part 44. A first corner ring 46 is fixedly connected to one corner of the top plate 41 near the mating part 44. The top of the first corner ring 46 has an annular groove 49. A double annular wall tooth 410 is fixedly installed on the inner side wall of the annular groove 49. A second corner ring 47 is fixedly connected to one corner of the mating part 44 near the top plate 41. A small toothed rod 48 is fixedly installed at the bottom of the second corner ring 47. The small toothed rod 48 meshes with the double annular wall tooth 410 through the annular groove 49. The top plate 41 is installed with the rotating shaft 36 by the first corner ring 46 and the mating part 44 is fitted with the rotating shaft 36 by the second corner ring 47. Similarly, the bottom plate 42 at the bottom of the top plate 41 is installed with the rotating shaft 36 by the pin, and the other bottom plate 42 at the bottom of the mating part 44 is installed with the rotating shaft 36 by the pin.

[0067] The peristaltic fitting 43 includes an outer hose 431 installed inside the sleeve 45, an inner hose 432 installed inside the outer hose 431, and neck rings 433 fixedly connected to the surfaces of both the inner hose 432 and the outer hose 431 to increase the toughness and foldability of the hose structure. A capping ring 434 is installed on the top of both the outer hose 431 and the inner hose 432. A spiral air tube 435 is fixedly inserted into the top of the capping ring 434 for connection to the piston pump 311. A guide bucket 436 is threaded in the middle of the top of the capping ring 434 to guide the rhubarb seedlings falling through the dropping hole 22 into the inner hose 432.

[0068] The mating component 44 includes a mating plate body 441 with a pin mounted on the rotating shaft 36. The sleeve component 45 has a through hole 442 at the mounting position on the mating plate body 441. A long screw 443 is threadedly installed on the side of the mating plate body 441 away from the top plate 41. A telescopic rod 444 is installed inside the through hole 442 and symmetrically installed on the opposite side of the long screw 443. The sleeve component 45 includes a wide-side cylinder 451. The wide-side cylinder 451 is assembled with the mating plate body 441 through the through hole 442. The end of the long screw 443 near the wide-side cylinder 451 is rotatably installed with the wide-side cylinder 451. One end of the telescopic rod 444 is connected to the inner wall of the through hole 442, and the other end is connected to the wide-side cylinder 451. The wide-side cylinder 451 is movably installed with the mating plate body 441 through the cooperation of the telescopic rod 444 and the long screw 443.

[0069] A spring ring part 452 is fixedly installed in the middle of the wide-side tube 451. Two waist-shrinking spring strips 453 are symmetrically connected to the outer surface of the spring ring part 452. A weighted ball 454 is clamped in the middle of each of the two waist-shrinking spring strips 453. A guide rod 455 is connected through the middle of the weighted ball 454. One end of the waist-shrinking spring strip 453 is connected to the spring ring part 452, and the other end is connected to the inner wall of the through hole 442. The outer flexible tube 431 is fitted into the wide-side tube 451. 1. Inner side; wherein, the diameter of the bottom edge ring of the four lifting rings 56 installed on the two bottom plates 42 is larger than the diameter of the bottom plate ring of the sleeve 45 installed on the mating part 44, which facilitates the installation of the pit assembly 5 on the bottom edge ring of the lifting rings 56 installed on the bottom plates 42; and the diameter of the through hole 442 is much larger than the inner diameter of the wide side tube 451, while the inner diameter of the inner hose 432 is larger than the maximum circle diameter of the vertical projection of a common rhubarb seedling on the ground.

[0070] In use, the servo motor 39 is started to drive the second spur gear 310 on the long crossbar 38 to rotate. Through the meshing transmission between the second spur gear 310 and the first spur gear 37, the rotating shaft 36 is driven to rotate clockwise, thereby driving the top plate 41 and its corresponding bottom plate 42 to rotate counterclockwise by 90°. Under the meshing transmission between the pinion 48 and the double ring wall teeth 410 in the inner wall of the ring groove 49, the mating part 44 and its other bottom plate 42 are driven. Rotate 90° clockwise around the rotating shaft 36 until the long edge of the top plate 41 and the long edge of the mating part 44 are in contact, and the long edge of the two bottom plates 42 are in contact. This allows the guide buckets 436 on the four peristaltic tubes 43 to be installed at the bottom of the four drop holes 22 in two rows and two columns at the rear end of the cover plate 21. With the automatic clamping and guidance of the rhubarb seedlings by the guide assembly 2, the automatic switching of the digging device for digging holes and transplanting rhubarb seedlings in one row and four columns and two rows and two columns is realized.

[0071] When the digging assembly 5 is in its initial one-row-four-column structural installation state through the plate frame assembly 4, combined with the lifting component 3 and the material guiding assembly 2, the digging device can automatically dig one-row-four-column pits, resulting in a wide planting area and a large operating range. When the digging device automatically switches to the two-row-two-column working mode, it can automatically dig two-row-two-column pits, resulting in a longer planting distance, faster planting speed, and higher transplanting efficiency for rhubarb seedlings. This allows growers to choose the appropriate mode based on the actual weather conditions, the specific freshness of the rhubarb seedlings, the planting area of ​​the land, and the available transplanting time.

[0072] During the vertical downward transport of rhubarb seedlings inside the peristaltic tube 43, the transport process is mainly achieved by the autonomous downward fall of the rhubarb seedlings under the action of gravity.

[0073] Secondly, combined with the reciprocating operation of the piston pump 311 filling and extracting air between the outer hose 431 and the inner hose 432, the neck ring 433 on the outer hose 431 and the inner hose 432 continuously contracts and expands, thereby realizing the self-peristalsis inside the peristaltic tube 43. This provides non-contact and non-damaging auxiliary peristalsis and feeding for the rhubarb seedlings stuck inside the inner hose 432. This not only prevents larger rhubarb seedlings from getting stuck inside the inner hose 432, but also utilizes the smooth structure inside the inner hose 432 to achieve a non-contact and non-damaging peristaltic anti-blocking feeding function for the rhubarb seedlings.

[0074] Furthermore, by fitting the bottom of the outer flexible hose 431 against the inner wall of the lifting ring 56, the vibration generated when the digging grab 52 excavates the transplanting pit can be transmitted to the peristaltic tube 43 through the bottom ring 51 and the lifting ring 56. This provides an additional vibration and material removal effect during the peristaltic tube 43's delivery of rhubarb seedlings, further promoting the peristaltic feeding of rhubarb seedlings by the peristaltic tube 43, and helping the inner flexible hose 432 avoid material blockage inside the rhubarb seedlings.

[0075] Additionally, when the vibration generated by the excavating grabber 52 when digging the transplanting pit is transmitted to the peristaltic tube 43, it will further drive the two waist-shrinking elastic strips 453 on the spring ring part 452 to shake between the wide side cylinder 451 and the inner wall of the through hole 442. This causes the waist-shrinking elastic strips 453 to be repeatedly squeezed between the two. Under the action of inertia, they can be irregularly impacted by the guide rod 455 on the load ball 454, thereby expanding the amplitude between the wide side cylinder 451 and the peristaltic tube 43, and further increasing the overall shaking amplitude of the peristaltic tube 43. With the combined effect of the peristaltic tube 43's own peristalsis and shaking, the peristaltic tube 43 can quickly discharge materials without causing material blockage.

[0076] In addition, before transplanting rhubarb seedlings, the long screw 443 can be twisted into the mounting plate 441, and the long screw 443 will push the wide-side cylinder 451 closer to one side of the telescopic rod 444, thereby changing the assembly position of the wide-side cylinder 451 in the through hole 442, and thus changing the spacing of the digging assembly 5 in the horizontal direction. This allows for precise control of the spacing between the digging pits for each row of rhubarb seedlings, and flexible adjustment of the different transplanting spacing of rhubarb seedlings in the horizontal direction. It can be adjusted in real time based on the size of the rhubarb seedlings and the amount of arable land.

[0077] The third embodiment is based on embodiments one and two; please refer to [link / reference]. Figures 13 to 19As shown, two lifting rods 53 are centrally symmetrically installed on the sides of the bottom ring 51, and the top of the lifting rods 53 is fixedly installed on the bottom ring of the wide-side cylinder 451. An auxiliary gear 54 is installed at the bottom of the lifting rods 53, and a baffle 55 is fixedly installed at the bottom of the auxiliary gear 54. An outer wall tooth 511 is fixedly installed on the outer surface of the bottom ring 51. The auxiliary gear 54 meshes with the outer wall tooth 511. A stepper motor 57 is also installed at the bottom of the wide-side cylinder 451. A main gear 58 is installed at the bottom of the stepper motor 57, and the main gear 58 meshes with the outer wall tooth 511. The bottom ring 51 is rotated and installed with the lifting ring 56 through the cooperation of the main gear 58 and the outer wall tooth 511.

[0078] The hole-digging gripper 52 includes scraper plates 521 fixedly installed at the bottom of the bottom ring 51, arranged in a circular array. The scraper plates 521 have through-cut notches 522 on their sides, providing space for the scraper plates 521 to retract and expand outwards. These notches also provide ventilation windows for airflow to the inside of the hole-digging gripper 52, preventing excessive dryness and avoiding heatstroke or scorching of the rhubarb seedlings temporarily inside the gripper 52 in high-temperature environments. Spiral scrapers 523 are fixedly connected to the outer surface of the scraper plates 521, arranged in a spiral shape. An extension sac 524 is connected between every two adjacent scraper plates 521. The entire sac is made of thickened and wear-resistant material, and the extension sac 524 is also spiral-shaped, allowing it to be stretched and automatically spring back. An air-guiding rebound patch is fixedly connected to the top edge of the outer surface of the scraper plates 521. Plate 525, and the top of scraper plate 521 is spring-loaded to bottom ring 51 via air guide rebound plate 525. The bottoms of outer hose 431 and inner hose 432 are inserted into the inner side of bottom ring 51 through sleeve 45 on bottom plate 42, and the bottom of outer hose 431 is in contact with the inner wall of lifting ring 56, so that the external force vibration can be transmitted through digging gripper 52, bottom ring 51, lifting ring 56 to peristaltic tube 43. Among them, outer hose 43 The bottom end of the outer hose 431 and the inner hose 432 are connected and closed, so that the middle interlayer chamber of the outer hose 431 and the inner hose 432 is independent from the outside air when the top of the capping ring 434 is blocked; wherein, the bottom of the air valve rod 59 is connected to the extension bladder 524 through the bottom ring 51 and the air guide rebound plate 525, and the air valve rod 59 is used to control the opening and closing of the airflow path connecting the extension bladder 524 with the outer hose 431 and the inner hose 432.

[0079] After the control piston pump 311 evacuates the air from the inside of the extension bladder 524 and closes the air valve rod 59 in time, the air path inside the extension bladder 524 is relatively independent, while ensuring that the inside of the extension bladder 524 is in a relatively vacuum state. The extension bladder 524 in the vacuum state enhances the closing and tightening force between adjacent scraper plates 521. At the same time, with the help of the rebound effect of the air guide rebound plate 525, the scraper plates 521 are tightly attached to the bottom edge of the bottom ring 51 and tighten towards the center. This realizes the automatic expansion and closure of the digging gripper 52, realizes the automatic digging of the rhubarb seedling transplanting pit, and realizes the automatic transplanting of rhubarb seedlings in the pit.

[0080] The spiral scraper installed on the outer surface of the scraper plate 521 allows the digging grab 52 to drill downwards into the soil and throw the soil outwards along the guide of the spiral scraper 523. It can also break up any hard clods and gravel in the soil, destroy the roots of weeds, and remove them from the pit. This avoids the resistance encountered during manual digging and the tedious process of cleaning weed roots, providing a good planting environment for rhubarb seedlings.

[0081] The auxiliary gear 54, in conjunction with the main gear 58, drives the bottom ring 51 to rotate at the bottom of the lifting ring 56. The baffle 55 shields the bottom of the outer wall teeth 511. Together with the locking mechanism of the bottom ring 51 at the bottom of the lifting ring 56, the position of the bottom ring 51 is simultaneously limited in both the horizontal and vertical directions. This ensures that the outer wall teeth 511 and the main gear 58 are always meshed, while also preventing the pit-digging gripper 52 from being obstructed by strong weed roots during pit excavation, thus preventing misalignment between the outer wall teeth 511 and the main gear 58 and ensuring the smooth operation of the pit-digging gripper 52.

[0082] Furthermore, when not transplanting rhubarb seedlings, the hole-digging device can perform the same transplanting operation on plants of the same type. It can also autonomously dig holes and sow seeds. The specific usage method is the same as the hole-digging and transplanting process for rhubarb seedlings mentioned above, realizing the multi-functionality and practicality of one machine.

[0083] The bottom ring 51 has an annular air cavity at its top, which is not shown in the figure. The bottom of the lifting ring 56 has a concave annular groove structure that can engage with the annular air cavity, ensuring that the bottom ring 51 can rotate at the bottom of the lifting ring 56 while being engaged with it. Furthermore, the bottom ring 51 has an air-guiding cavity inside, which is connected to the air-guiding rebound plate 525. This cavity is also connected to the air valve rod 59 on the lifting ring 56 via the annular air cavity. Figure 19 The structural diagram shown in the image.

[0084] Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A device for digging holes for transplanting rhubarb seedlings, comprising a hole-digging machine (1), characterized in that: The top of the digging machine (1) is equipped with a material guide assembly (2). The material guide assembly (2) includes a cover plate (21) that covers the top of the digging machine (1). One side of the cover plate (21) is hinged to the top of the digging machine (1). A material drop hole (22) is opened through the top of the cover plate (21). Two bottom plate parts (23) are also threadedly installed on the top of the cover plate (21). An inclined conveyor belt (24) is symmetrically installed on the top edge of each bottom plate part (23) and is set in an inclined position. Four valve covers (26) are installed on the top of the two bottom plate parts (23). It also includes a lifting assembly (3), which is installed on the inside of the digging machine (1). The lifting assembly (3) includes a horizontal plate frame (31) installed on the inside of the digging machine (1). A first vertical plate (32) is fixedly installed at the rear end of the horizontal plate frame (31), and a second vertical plate (33) is fixedly installed at the front end of the horizontal plate frame (31). A clamping plate (34) is slidably installed on the middle of the inner side of the first vertical plate (32) and the second vertical plate (33). A hydraulic cylinder (35) is fixedly installed at the bottom end of the clamping plate (34), and the bottom flange of the hydraulic cylinder (35) is installed on the horizontal plate frame (31). The end of the clamping plate (34) away from the horizontal plate frame (31) is fixedly connected to the inner wall of the digging machine (1). A plate frame assembly (4) is mounted on a lifting assembly (3). A top plate (41) and a bottom plate (42) are installed between the second vertical plate (33) and the rotating shaft (36). There are two bottom plates (42), which are installed side by side at the bottom of the top plate (41). A mating part (44) is installed side by side on the side of the top plate (41). The top plate (41) and the bottom plate (42) are... Two peristaltic tubes (43) are installed between the mating part (44) and another bottom plate (42), and there are a total of four peristaltic tubes (43). The top plate (41) has the same structure as the bottom plate (42) corresponding to its bottom, and the mating part (44) has the same structure as the other bottom plate (42) corresponding to its bottom. The mating part (44) and the top plate (41) are symmetrically installed on the left and right sides of the horizontal plate frame (31). A pit-digging assembly (5) is installed at the bottom of a plate frame assembly (4). The pit-digging assembly (5) includes a bottom ring (51) installed at the bottom of a bottom plate (42). A pit-digging gripper (52) is installed at the bottom of the bottom ring (51). A lifting ring (56) is snapped onto the top of the bottom ring (51). Four air valve rods (59) are connected in a circular array at the top of the lifting ring (56). A base (510) is fixedly connected to the top of the air valve rods (59). The top of the base (510) is threaded onto the bottom edge ring of a wide-side cylinder (451). The top of the air valve rods (59) passes through the base (510) and communicates with the chamber between the outer hose (431) and the inner hose (432).

2. The rhubarb seedling transplanting hole digging device according to claim 1, characterized in that: A rotating shaft (36) is fitted at the top of the horizontal plate frame (31) near the middle. A first spur gear (37) is fixedly installed on the top of the rotating shaft (36). A servo motor (39) is fixedly installed on the side of the second vertical plate (33) facing the first vertical plate (32). A long horizontal bar (38) is connected between the servo motor (39) and the first vertical plate (32). A second spur gear (310) is fixedly installed on the long horizontal bar (38), and the second spur gear (310) meshes with the first spur gear (37). The long horizontal bar (38) is rotatably installed with the first vertical plate (32) through the servo motor (39). A piston pump (311) is fixedly installed on the top right side of the second vertical plate (33).

3. The rhubarb seedling transplanting hole digging device according to claim 2, characterized in that: Two sleeves (45) are installed on both the top plate (41) and the mating part (44). A first corner ring (46) is fixedly connected to one corner of the top plate (41) near the mating part (44). A ring groove (49) is opened on the top of the first corner ring (46). A double ring wall tooth (410) is fixedly installed on the inner side wall of the ring groove (49). A second corner ring (47) is fixedly connected to one corner of the mating part (44) near the top plate (41). A small toothed rod (48) is fixedly installed at the bottom of the second corner ring (47). The small toothed rod (48) meshes with the double ring wall tooth (410) through the ring groove (49). The top plate (41) is installed with the rotating shaft (36) by the first corner ring (46) and the mating part (44) is fitted with the rotating shaft (36) by the second corner ring (47).

4. The rhubarb seedling transplanting hole digging device according to claim 3, characterized in that: The peristaltic fitting (43) includes an outer hose (431) installed inside a sleeve (45), an inner hose (432) installed inside the outer hose (431), and a neck ring (433) fixedly connected to the surfaces of the inner hose (432) and the outer hose (431). A capping ring (434) is installed on the top of the outer hose (431) and the inner hose (432). A spiral air tube (435) is fixedly inserted into the top of the capping ring (434), and a guide bucket (436) is threadedly installed at the center of the top of the capping ring (434).

5. The rhubarb seedling transplanting hole digging device according to claim 4, characterized in that: The fitting component (44) includes a fitting plate body (441) with a pin mounted on the rotating shaft (36). The sleeve (45) has a through hole (442) at the mounting position on the fitting plate body (441). A long screw (443) is threadedly installed on the side of the fitting plate body (441) away from the top plate (41). A telescopic rod (444) is installed inside the through hole (442) and is symmetrically installed on the opposite side of the long screw (443).

6. The rhubarb seedling transplanting hole digging device according to claim 5, characterized in that: The sleeve component (45) includes a wide-side cylinder (451), which is assembled with the mounting plate (441) through a through hole (442). A long screw (443) is rotatably installed with the wide-side cylinder (451) at one end near the wide-side cylinder (451). One end of a telescopic rod (444) is connected to the inner wall of the through hole (442), and the other end is connected to the wide-side cylinder (451). The wide-side cylinder (451) is movably installed with the mounting plate (441) through the cooperation of the telescopic rod (444) and the long screw (443).

7. The rhubarb seedling transplanting hole digging device according to claim 6, characterized in that: A spring ring (452) is fixedly installed in the middle of the wide-side tube (451). Two waist-shrinking spring strips (453) are symmetrically connected on the outer surface of the spring ring (452). A weighted ball (454) is clamped in the middle of each of the two waist-shrinking spring strips (453). A guide rod (455) is connected through the middle of the weighted ball (454). One end of the waist-shrinking spring strip (453) is connected to the spring ring (452), and the other end is connected to the inner wall of the through hole (442). An outer flexible tube (431) is fitted inside the wide-side tube (451).

8. The rhubarb seedling transplanting hole digging device according to claim 7, characterized in that: Two lifting rods (53) are centrally symmetrically installed on the side of the bottom ring (51), and the top of the lifting rods (53) is fixedly installed on the bottom ring of the wide side cylinder (451). An auxiliary gear (54) is installed at the bottom of the lifting rods (53), and a baffle (55) is fixedly installed at the bottom of the auxiliary gear (54). An outer wall tooth (511) is fixedly installed on the outer surface of the bottom ring (51), and the auxiliary gear (54) meshes with the outer wall tooth (511). A stepper motor (57) is also installed on the bottom ring of the wide side cylinder (451), and a main gear (58) is installed at the bottom of the stepper motor (57), and the main gear (58) meshes with the outer wall tooth (511). The bottom ring (51) is rotated and installed with the lifting ring (56) through the cooperation of the main gear (58) and the outer wall tooth (511).

9. The rhubarb seedling transplanting hole digging device according to claim 8, characterized in that: The digging gripper (52) includes scraper plates (521) fixedly installed at the bottom of the bottom ring (51) and arranged in a circular array. The scraper plates (521) have notches (522) through them on their sides. Spiral scrapers (523) are fixedly connected to the outer surface of the scraper plates (521) and are arranged in a spiral shape. An extension sac (524) is connected between every two adjacent scraper plates (521). The top edge of the outer surface of the scraper plates (521) A guide air rebound plate (525) is fixedly connected to the side, and the top of the scraper plate (521) is spring-loaded to the bottom ring (51) through the guide air rebound plate (525). The bottom of the valve rod (59) is connected to the extension bladder (524) through the bottom ring (51) and the guide air rebound plate (525). The valve rod (59) is used to control the opening and closing of the airflow path between the extension bladder (524) and the outer hose (431) and the inner hose (432).

10. The application of the rhubarb seedling transplanting hole-digging device as described in claim 9, characterized in that, Includes the following steps: Step 1: According to the number of planting rows of the seedlings to be transplanted, install the two base plate pieces (23) on the four rows of material dropping holes (22) on the top of the hole digging machine (1), or install them on the two rows of two material dropping holes (22). Step 2: Start the inclined conveyor belt (24) to transfer the rhubarb seedlings to each valve cover (26). After the rhubarb seedlings are aligned with the top of the valve cover (26), open the valve cover (26) and the piston pump (311) at the same time. The rhubarb seedlings are introduced into the inner hose (432) through the drop hole (22) and the guide bucket (436). The piston pump (311) agitates the air between the outer hose (431) and the inner hose (432) to increase and decrease, causing the peristaltic tube (43) to peristalse locally and guide the rhubarb seedlings into the bottom ring (51), so that the rhubarb seedlings come into the funnel-shaped cavity formed by the pit grabbing piece (52). Step 3: Simultaneously start the stepper motor (57) and the hydraulic cylinder (35). The hydraulic cylinder (35) drives the lifting assembly (3) to descend as a whole. At the same time, the stepper motor (57) drives the main gear (58) to rotate counterclockwise. By meshing with the outer wall gear (511), the digging grab (52) rotates clockwise at the bottom of the bottom ring (51). The digging grab (52) digs a hole on the ground by rotating and descending. After digging the hole, the hydraulic cylinder (35) drives the lifting assembly (3) to rise back inside the digging machine (1). Then, by opening the air valve rod (59), the piston pump (311) is controlled to inflate the extension bladder (524) to open the closed scraper blade (521) and vertically transport the rhubarb seedlings into the dug hole, thus completing the automatic digging and transplanting process of rhubarb seedlings. After the lifting assembly (3) returns to its initial position, the piston pump (311) is run to extract the air from the extension bladder (524), causing the scraper plate (521) to close again into a funnel shape. Then the air valve rod (59) is closed, and the above operation is repeated to enter the automatic digging and transplanting cycle for the next batch of rhubarb seedlings.

Images