Rheum officinale seedling transplanting and pit digging device and application thereof

Abstract

The invention discloses a rhubarb seedling transplanting pit digging device and application thereof, and relates to the technical field of rhubarb seedling transplanting, the rhubarb seedling transplanting pit digging device comprises a pit digging locomotive, the advancing direction of the head of the pit digging locomotive is taken as the front end, a material guide assembly is mounted at the top of the pit digging locomotive, and the material guide assembly comprises a cover plate covering the top of the pit digging locomotive; and one side of the cover plate is hinged to the top of the pit digging machine, a material falling hole is formed in the top of the cover plate in a penetrating mode, and two bottom plate pieces are further installed at the top of the cover plate in a threaded mode. According to the rhubarb seedling transplanting and pit digging device and the application thereof, a long screw is twisted towards the interior of a matching plate body, a wide-edge cylinder is pushed to be close to one side of a telescopic rod by the long screw, the distance of a pit digging assembly in the transverse row direction is changed, and flexible adjustment of different transplanting distances of rhubarb seedlings in the transverse row direction is achieved; the device can be adjusted in real time according to the plant size of the rhubarb seedlings and the planting area of the land.

Description

Technical Field

[0001] The invention relates to the technical field of rhubarb seedling transplanting, in particular to a rhubarb seedling transplanting pit digging device and application thereof. Background Art

[0002] Rhubarb is a common Chinese medicinal material. It is a plant of the genus Rheum palmatum of the Polygonaceae family. Both its roots and rhizomes can be used as medicine. It has the effects of purging accumulation, clearing away heat and purging fire, cooling blood and detoxifying, and removing blood stasis and dredging menstruation. It is mainly used to treat constipation due to accumulation of blood, vomiting and bleeding due to blood heat, red eyes and swollen throat, hot and toxic sores, burns, blood stasis, damp-heat dysentery, jaundice, stranguria and other symptoms. Because of its extremely high medicinal value, rhubarb is planted on a large scale, and the planting area is getting larger and larger. Therefore, a pit digging device that can be used for auxiliary planting during the transplanting process of rhubarb seedlings is needed to assist the planters in transplanting rhubarb seedlings.

[0003] However, the current method of digging holes for transplanting rhubarb seedlings on the market is mostly to plant them by manual digging. Not only is the efficiency of digging holes and transplanting low, but the work intensity is also high, which is time-consuming and labor-intensive. Furthermore, some staff members will use equipment from other fields for digging holes for rhubarb seedlings. Although it saves manpower and has the function of digging holes, it cannot be used to dig holes according to the transplanting needs of rhubarb seedlings. It is also impossible to adjust the horizontal spacing and vertical excavation depth of the excavated pits according to the plant size of the rhubarb seedlings and the amount of land that can be planted. The pits are just roughly excavated, and either the excavated pits are too large or too shallow, making it impossible to directly transplant the rhubarb seedlings. Summary of the invention

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: a rhubarb seedling transplanting digging device and its application, including a digging locomotive, with the forward direction of the digging locomotive head as the front end, a material guide assembly is installed on the top of the digging locomotive, and the material guide assembly includes a cover plate covering the top of the digging locomotive, and one side of the cover plate is hinged to the top of the digging locomotive, a material drop hole is opened through the top of the cover plate, and two bottom plate members are also threadedly installed on the top of the cover plate, and an inclined conveyor belt is symmetrically installed at the top edge of each of the bottom plate members, and is arranged in an inclined shape. , through the arrangement of two bottom plates, the rhubarb seedlings are clamped and conveyed via the oblique conveyor belt, and the rhubarb seedlings can be conveyed from two directions on both sides of the pit digging locomotive at the same time, realizing two-way feeding. Four valve covers are installed on the top of the two bottom plates, which are used to control the connection and closing of the holes on the top of the bottom plates with the valve covers and the drop holes, and every two valve covers correspond to one bottom plate; wherein, the specific opening conditions of the drop holes on the cover plate are as follows: four drop holes in one row and four columns are opened near the front end of the cover plate, and four drop holes in two rows and two columns are opened near the front end of the cover plate; It also includes a lifting assembly, which is installed on the inner side of the pit digging locomotive. The lifting assembly includes a horizontal plate frame installed on the inner side of the pit digging locomotive, a first vertical plate is fixedly installed on the rear end of the horizontal plate frame, a second vertical plate is fixedly installed on the front end of the horizontal plate frame, a card clip is slidably installed on the inner middle part of the first vertical plate and the second vertical plate, a hydraulic cylinder is fixedly installed on the bottom end of the card clip, and the bottom flange of the hydraulic cylinder is installed on the horizontal plate frame, and one end of the card clip away from the horizontal plate frame is fixedly connected to the inner wall of the pit digging locomotive; A plate rack assembly, which is installed on the lifting component, a top plate and a bottom plate are installed between the second vertical plate and the rotating shaft rod, and the number of the bottom plates is two, and they are installed in parallel at the bottom of the top plate, and the sides of the top plate are installed in parallel with matching pieces, and two peristaltic tubes are installed between the top plate and the bottom plate and between the matching piece and another bottom plate, and the number of the peristaltic tubes is four in total, wherein the top plate has the same structure as the bottom plate corresponding to its bottom, and the matching piece has the same structure as another bottom plate corresponding to its bottom, wherein the matching piece and the top plate are symmetrically installed on the left and right sides of the horizontal plate rack; A pit digging assembly is installed at the bottom of the plate frame assembly, and the pit digging assembly includes a bottom ring installed at the bottom of the bottom plate, a pit digging grab is installed at the bottom of the bottom ring, and a lifting ring is clamped and installed on the top of the bottom ring, so that the bottom ring can rotate around its own axis under the clamping limit of the lifting ring, and four gas valve stems are connected to the top of the lifting ring in a circular array, and the top of the gas valve stem is fixedly connected to a base, and the top of the base is threadedly installed on the bottom edge ring of the wide-edge tube, wherein the top of the gas valve stem passes through the base and is connected to the chamber between the outer hose and the inner hose.

[0005] Preferably, a rotating shaft rod is clamped at a position near the middle of the top of the horizontal plate frame, which can rotate around its own axis, a first vertebral gear is fixedly installed on the top of the rotating shaft rod, a servo motor is fixedly installed on the side of the second vertical plate facing the first vertical plate, a long horizontal bar is connected between the servo motor and the first vertical plate, a second vertebral gear is fixedly installed on the long horizontal bar, and the second vertebral gear is meshed with the first vertebral gear, the long horizontal bar is rotatably installed with the first vertical plate through the servo motor, and a piston pump is fixedly installed on the top right side of the second vertical plate.

[0006] Preferably, two sleeve parts are installed on the top plate and the matching part, the top plate is fixedly connected with a first angle ring at a corner near the matching part, the top of the first angle ring is provided with an annular groove, and double-ring wall teeth are fixedly installed on the inner wall of the annular groove, the matching part is fixedly connected with a second angle ring at a corner near the top plate, a small tooth rod is fixedly installed at the bottom of the second angle ring, and the small tooth rod is meshed with the double-ring wall teeth through the annular groove, the top plate is installed with the rotating shaft rod pin through the first angle ring, and the matching part is fitted with the rotating shaft rod through the second angle ring. Similarly, the bottom plate at the bottom of the top plate is installed with the rotating shaft rod pin, and the other bottom plate at the bottom of the matching part is installed with the rotating shaft rod pin.

[0007] Preferably, the peristaltic tube fitting includes an outer hose installed in a sleeve member, an inner hose installed on the inner side of the outer hose, the surfaces of the inner hose and the outer hose are fixedly connected with a neck ring portion for increasing the toughness and retractable and foldable performance of the hose structure, a covering ring is commonly installed on the top of the outer hose and the inner hose, a spiral air pipe is fixedly inserted on the top of the covering ring for connecting to a piston pump, a guide bucket is threadedly installed on the middle part of the top end of the covering ring for guiding the rhubarb seedlings falling through the drop hole into the inner hose.

[0008] Preferably, the mating part includes a matching plate body with a pin installed on the rotating shaft rod, the sleeve part is provided with a through hole at the installation position on the matching plate body, a long screw is threadedly installed on the side of the matching plate body away from the top plate, and a telescopic rod is installed on the inner side of the through hole and is symmetrically installed on the opposite side of the long screw.

[0009] Preferably, the sleeve member includes a wide-side tube, which is assembled and installed with the matching plate through a through hole, and one end of the long screw rod close to the wide-side tube is rotatably installed with the wide-side tube, one end of the telescopic rod is connected to the inner wall of the through hole, and the other end is connected to the wide-side tube, and the wide-side tube is movably installed with the matching plate body through the cooperation of the telescopic rod and the long screw rod.

[0010] Preferably, an elastic ring portion is fixedly installed in the middle of the wide-side tube, and two waisted elastic strips are symmetrically connected to the outer surface of the elastic ring portion, and a weight-bearing ball is clamped in the middle of the two waisted elastic strips, and a guide rod is connected through the middle of the weight-bearing ball, wherein one end of the waisted elastic strip is connected to the elastic ring portion, and the other end is connected to the inner wall of the through hole, and the outer hose is embedded and installed on the inner side of the wide-side tube.

[0011] Preferably, two suspension rods are installed on the sides of the bottom ring in a centrally symmetrical shape, and the tops of the suspension rods are fixedly installed on the bottom ring of the wide-edge tube, an auxiliary gear is installed on the bottom of the suspension rod, a baffle is fixedly installed on the bottom of the auxiliary gear, an outer wall tooth is fixedly installed on the outer surface of the bottom ring, the auxiliary gear is meshed with the outer wall tooth, a stepper motor is also installed on the bottom ring of the wide-edge tube, a main gear is installed on the bottom of the stepper motor, and the main gear is meshed with the outer wall tooth, and the bottom ring is rotatably installed with the suspension ring through the cooperation of the main gear and the outer wall tooth.

[0012] Preferably, the pit digging grabber includes a scraper plate fixedly mounted on the bottom of the bottom ring and installed in a circular array. A notch is opened through the side of the scraper plate. A spiral scraper is fixedly connected to the outer surface of the scraper plate and is arranged in a spiral shape. An extension bag is connected between every two adjacent scraper plates. The whole is made of thickened and wear-resistant material, and the extension bag is also arranged in a spiral shape, which can be stretched and automatically rebounded and folded. An air guide rebound plate is fixedly connected to the top edge of the outer surface of the scraper plate, and the top of the scraper plate The outer hose and the inner hose are elastically assembled with the bottom ring through an air-guiding rebound plate, and the bottoms of the outer hose and the inner hose are inserted into the inner side of the bottom ring through the sleeve part on the bottom plate, wherein the bottom ends of the outer hose and the inner hose are connected and closed, so that when the tops of the outer hose and the inner hose are sealed by the sealing ring, the middle sandwich chamber is independent of the outside air; wherein the bottom of the air valve stem is connected with the extension bag part through the bottom ring and the air-guiding rebound plate, and the air valve stem is used to control the opening and closing of the air flow path connecting the extension bag part with the chamber between the outer hose and the inner hose.

[0013] An application of a pit digging device for transplanting rhubarb seedlings comprises the following steps: Step 1: According to the number of planting rows of seedlings to be transplanted, two bottom plate parts are installed on the drop holes of one row and four rows, or on the drop holes of two rows and two rows, opened on the top of the pit digging locomotive; Step 2: Start the inclined conveyor belt to convey the rhubarb seedlings to each valve cover. After the rhubarb seedlings are aligned with the top of the valve cover, open the valve cover and the piston pump at the same time, and introduce the rhubarb seedlings into the inner hose through the drop hole and the guide bucket. The piston pump is used to increase and decrease the air between the outer hose and the inner hose, so that the peristaltic pipe part peristalsizes, and the rhubarb seedlings are introduced into the bottom ring, so that the rhubarb seedlings come into the funnel-shaped chamber formed by the digging and grabbing parts; Step 3: Start the stepper motor and the hydraulic cylinder at the same time, and drive the lifting assembly to descend as a whole through the hydraulic cylinder, while driving the main gear to rotate counterclockwise through the stepper motor, so as to utilize the meshing transmission with the outer wall teeth to drive the pit digging grab to rotate clockwise at the bottom of the bottom ring, and utilize the rotating and descending pit digging grab to dig a pit on the ground. After the pit digging is completed, the lifting assembly is driven to rise up on the inside of the pit digging locomotive through the hydraulic cylinder, and then the air valve stem is opened to control the piston pump to inflate the inside of the air guide rebound plate, so that the closed scraper plate is opened, and the rhubarb seedlings are vertically transported into the pit, completing the automatic pit digging and transplanting process of the rhubarb seedlings; After the lifting assembly returns to its initial position, the piston pump is operated to extract the air in the extension bag, so that the scraper plate closes again into a funnel shape, and then the air valve stem is closed. The above operation is then repeated to enter the automatic digging and transplanting cycle for the next batch of rhubarb seedlings.

[0014] The present invention provides a pit digging device for transplanting rhubarb seedlings and its application, which has the following beneficial effects: 1. The rhubarb seedling transplanting digging device and its application, through a hydraulic cylinder, controls the vertical descent height of the digging assembly installed at the bottom of the bottom plate on the horizontal plate frame, so as to control the digging depth of the digging assembly in the soil, and can be combined with the specific length of the rhubarb seedling rhizome to achieve precise control of the planting depth of the rhubarb seedlings.

[0015] 2. The device for digging holes for transplanting rhubarb seedlings and its application, by starting the servo motor to drive the second vertebral gear on the long cross bar to rotate, thereby driving the rotating shaft rod to rotate clockwise through the meshing transmission of the second vertebral gear and the first vertebral gear, thereby driving the top plate and the corresponding bottom plate at its bottom to rotate counterclockwise, driving the matching part and another bottom plate at its bottom to rotate clockwise around the rotating shaft rod, so that the guide buckets on the four peristaltic pipes correspond to the bottom of the four drop holes in two rows and two columns installed at the rear end of the cover plate, and the automatic clamping and guiding of the rhubarb seedlings by the material guide assembly, the automatic switching of the automatic digging and transplanting functions of the digging device for rhubarb seedlings between one row and four columns and two rows and two columns is realized.

[0016] 3. The pit digging device for transplanting rhubarb seedlings and its application, when the pit digging assembly is in the initial one row and four columns structural installation state in the frame assembly combined with the lifting component and the material guide assembly, the pit digging device at this time can automatically dig one row and four columns of soil pits, and the planting area and the operating range are wide at this time; when the pit digging device automatically switches to the two rows and two columns working mode, the pit digging device at this time can automatically dig two columns and two rows of soil pits, and the planting distance is far and the planting speed is fast. The transplanting efficiency of rhubarb seedlings is high, which is convenient for planting personnel to choose and use them in time according to the actual climate change of the day, the specific freshness of the rhubarb seedlings, the planting area of ​​the land, and the effective time available for transplanting.

[0017] 4. The rhubarb seedling transplanting and digging pit device and its application, through the reciprocating operation process of the piston pump to fill and extract the air between the outer hose and the inner hose, the neck ring parts on the outer hose and the inner hose are continuously contracted and expanded to realize the self-peristalsis inside the peristaltic pipe fitting, so as to perform non-contact and non-damage auxiliary peristalsis and feeding for the rhubarb seedlings stuck on the inner side of the inner hose, which can prevent the rhubarb seedlings of larger plants from being blocked in the inner hose, and can also utilize the smooth structure inside the inner hose to realize the non-contact and non-damage peristaltic anti-blocking feeding function for the rhubarb seedlings.

[0018] 5. The rhubarb seedling transplanting digging device and its application, through the bottom of the outer hose being fitted with the inner wall of the hanging ring, can transmit the vibration generated when the digging grab is digging the transplanting pit to the peristaltic pipe through the bottom ring and the hanging ring, thereby providing an additional shaking and material removal effect for the peristaltic pipe in the process of conveying the rhubarb seedlings, further promoting the peristaltic feeding of the rhubarb seedlings by the peristaltic pipe, and helping the inner hose to avoid blockage inside the rhubarb seedlings.

[0019] 6. The rhubarb seedling transplanting digging device and its application provide a flexible feeding method for rhubarb seedlings by controlling the installation positions of the two bottom plates on the cover plate. It can adopt a front-and-rear feeding method, or a front-end feeding method or a rear-end feeding method at the same time. At the same time, the feeding directions are various and correspond to different transplanting needs. It can be used in combination with the limited space on the digging locomotive for placing rhubarb seedlings, as well as different arrangements for the number of planting rows of rhubarb seedlings.

[0020] 7. The pit digging device for transplanting rhubarb seedlings and its application, by starting the pit digging locomotive to drive the pit digging assembly forward, digging holes and transplanting rhubarb seedlings at the next location, the operator needs to sit on the pit digging locomotive, control the forward direction and the pause time of the pit digging locomotive, and the automatic pit digging and transplanting of rhubarb seedlings can be realized.

[0021] 8. The rhubarb seedling transplanting digging device and its application, when the digging gripper transfers the vibration generated when digging the transplanting pit to the peristaltic pipe fitting, it will further drive the two waisted elastic strips on the elastic ring part to swing between the wide-edge tube and the inner wall of the through hole, and can use the guide rod on the weight-bearing ball to perform irregular impact on the elastic ring part, thereby expanding the amplitude of the peristaltic pipe fitting, thereby further increasing the overall shaking amplitude of the peristaltic pipe fitting, combined with the dual effects of the peristaltic pipe fitting's own peristalsis and shaking, so that the peristaltic pipe fitting can unload materials quickly without clogging.

[0022] 9. The device for digging holes for transplanting rhubarb seedlings and its application, by twisting a long screw into the matching plate body, the long screw pushes the wide-side tube toward one side of the telescopic rod, thereby changing the spacing of the digging assembly in the horizontal direction, thereby achieving precise control of the spacing of the pits to be dug for each row of rhubarb seedlings, and further achieving flexible adjustment of different transplanting spacings of rhubarb seedlings in the horizontal direction, and can be adjusted in real time based on the plant size of the rhubarb seedlings and the amount of land available for planting.

[0023] 10. The rhubarb seedling transplanting digging device and its application can provide space for the scraper plates to gather together and expand outward through the notches, and at the same time provide a window for the inside of the digging grab to circulate with the outside air, thereby preventing the inside of the digging grab from being too dry, and avoiding the rhubarb seedlings temporarily existing inside the digging grab from being stuffy and burning in a high temperature environment.

[0024] 11. The device for digging pits for transplanting rhubarb seedlings and its application, by utilizing the spiral scraper installed on the outer surface of the scraper plate, can enable the digging gripper to drill downward into the soil and throw the soil to the surroundings along the guidance of the spiral scraper. It can also crush the hard lumps of soil and hard sand and gravel that may exist in the soil, destroy the roots of weeds, and clean them out of the pit, avoiding the resistance encountered during manual excavation and the tedious process of cleaning the roots of weeds, and providing a good planting environment for rhubarb seedlings.

[0025] 12. The rhubarb seedling transplanting digging device and its application, through the auxiliary gear and the main gear, jointly drive the bottom ring to rotate at the bottom of the hanging ring, and use the baffle plate to block the bottom of the outer wall teeth. Together with the clamping setting of the bottom ring at the bottom of the hanging ring, the position of the bottom ring is simultaneously limited in the horizontal and vertical directions, ensuring that the outer wall teeth and the main gear are always engaged, while ensuring that the digging grab is not blocked by the strong weed roots when digging the pit, causing the outer wall teeth and the main gear to be misaligned, thereby ensuring the smooth operation of the digging grab. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the external structure of a pit digging device for transplanting rhubarb seedlings and its application according to the present invention; Figure 2 It is a schematic diagram of the internal structure of the pit digging locomotive of the present invention; Figure 3 It is a structural schematic diagram of the material guide assembly of the present invention; Figure 4 A side view of the lifting assembly and the panel frame assembly of the present invention; Figure 5 It is a structural schematic diagram of the lifting component and the plate frame assembly of the present invention; Figure 6 It is a schematic diagram of the structural deformation of the panel frame assembly of the present invention; Figure 7 It is a schematic diagram of the disassembled structure of the top plate and the matching parts of the present invention; Figure 8 for Figure 7 A is an enlarged view of the structure; Fig. 9 It is a structural schematic diagram of the peristaltic pipe fitting of the present invention; Fig.10 It is a structural schematic diagram of the matching part of the present invention; Fig.11 for Fig.10 A magnified view of the structure of middle B; Fig.12 It is a structural schematic diagram of the sleeve member of the present invention; Fig.13 It is a structural schematic diagram of the bottom plate and the bottom ring of the present invention; Fig.14 It is a structural schematic diagram of the pit digging assembly of the present invention; Fig.15 It is a structural schematic diagram of the bottom ring and the hanging ring of the present invention; Fig.16 It is a structural schematic diagram of the pit digging and grabbing member of the present invention; Fig.17 It is a structural schematic diagram of the scraper plate of the present invention; Fig.18 It is a structural schematic diagram of the pit digging and grabbing member of the present invention; Fig.19 The figure is a schematic diagram of the air flow path between the air valve stem and the air guide rebound plate of the present invention.

[0027] In the figure: 1, pit digging locomotive; 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, card clamp; 35, hydraulic cylinder; 36, shaft rod; 37, first vertebral gear; 38, long cross bar; 39, servo motor; 310, second vertebral gear; 311, piston pump; 4, plate frame assembly; 41, top plate; 42, bottom plate; 43, peristaltic pipe; 44, matching piece; 45, sleeve piece; 46, first angle ring; 47, second angle ring; 48, small gear rod; 49, ring groove; 410, double ring wall gear; 431, outer hose; 4 32. Inner hose; 433. Neck ring; 434. Capping ring; 435. Spiral air pipe; 436. Guide bucket; 441. Matching plate; 442. Through hole; 443. Long screw; 444. Telescopic rod; 451. Wide-edge tube; 452. Elastic ring; 453. Waist elastic strip; 454. Weight-bearing ball; 455. Guide rod; 5. Digging assembly; 51. Bottom ring; 52. Digging grab; 53. Hanging rod; 54. Auxiliary gear; 55. Baffle; 56. Lifting ring; 57. Stepping motor; 58. Main gear; 59. Valve stem; 510. Base; 511. Outer wall teeth; 521. Scraper plate; 522. Notch; 523. Spiral scraper; 524. Extension bag; 525. Air guide rebound plate. DETAILED DESCRIPTION

[0028] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

[0029] The first embodiment, as Figures 1 to 19As shown, the present invention provides a technical solution: a rhubarb seedling transplanting digging device and its application, comprising a digging locomotive 1, with the forward direction of the front of the digging locomotive 1 as the front end, a material guide assembly 2 is installed on the top of the digging locomotive 1, and the material guide assembly 2 includes a cover plate 21 covering the top of the digging locomotive 1, and one side of the cover plate 21 is hinged to the top of the digging locomotive 1, and a material drop hole 22 is opened through the top of the cover plate 21, and two bottom plate members 23 are also threadedly installed on the top of the cover plate 21, and each bottom plate member 2 The top edges of the two bottom plates 23 are symmetrically provided with oblique conveyor belts 24, and are arranged in an inclined shape. Through the arrangement of the two bottom plates 23, the rhubarb seedlings can be clamped and conveyed by the oblique conveyor belts 24, and the rhubarb seedlings can be conveyed from two directions on both sides of the pit digging locomotive 1 at the same time, realizing two-way feeding. Four valve covers 26 are installed on the top of the two bottom plates 23, which are used to control the connection and closing of the hollow of the valve cover 26 installed on the top of the bottom plate 23 and the drop hole 22, and every two valve covers 26 correspond to one bottom plate 23; It also includes a lifting assembly 3, which is installed on the inner side of the pit-digging locomotive 1. The lifting assembly 3 includes a horizontal plate frame 31 installed on the inner side of the pit-digging locomotive 1, a first vertical plate 32 is fixedly installed on the rear end of the horizontal plate frame 31, a second vertical plate 33 is fixedly installed on the front end of the horizontal plate frame 31, and a card clamp 34 is slidably installed on the inner middle part of the first vertical plate 32 and the second vertical plate 33, a hydraulic cylinder 35 is fixedly installed on the bottom end of the card clamp 34, and the bottom flange of the hydraulic cylinder 35 is installed on the horizontal plate frame 31, and the end of the card clamp 34 away from the horizontal plate frame 31 is fixedly connected to the inner wall of the pit-digging locomotive 1; The plate frame assembly 4 is installed on the lifting component 3, and a top plate 41 and a bottom plate 42 are installed between the second vertical plate 33 and the rotating shaft rod 36, and the number of the bottom plate 42 is two, and they are installed in parallel at the bottom of the top plate 41, and the side of the top plate 41 is installed with a matching piece 44 in parallel, and two peristaltic tubes 43 are installed between the top plate 41 and the bottom plate 42 and between the matching piece 44 and another bottom plate 42, and the number of the peristaltic tubes 43 is four in total, wherein the top plate 41 has the same structure as the bottom plate 42 corresponding to its bottom, and the matching piece 44 has the same structure as the other bottom plate 42 corresponding to its bottom, wherein the matching piece 44 and the top plate 41 are symmetrically installed on the left and right sides of the horizontal frame 31; The pit digging assembly 5 is installed at the bottom of the plate frame assembly 4. The pit digging assembly 5 includes a bottom ring 51 installed at the bottom of the bottom plate 42. A pit digging grab 52 is installed at the bottom of the bottom ring 51. A hanging ring 56 is clamped on the top of the bottom ring 51, so that the bottom ring 51 can rotate around its own axis under the clamping limit of the hanging ring 56. Four gas valve stems 59 are connected to the top of the hanging ring 56 in a circular array. The top of the gas valve stem 59 is fixedly connected to a base 510. The top of the base 510 is threadedly installed on the bottom edge ring of the wide-edge tube 451, wherein the top of the gas valve stem 59 passes through the base 510 and is connected to the chamber between the outer hose 431 and the inner hose 432.

[0030] A rotating shaft rod 36 is clamped at a position near the middle of the top of the horizontal plate frame 31, which can rotate around its own axis. A first vertebral gear 37 is fixedly installed on the top of the rotating shaft rod 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 cross bar 38 is connected between the servo motor 39 and the first vertical plate 32. A second vertebral gear 310 is fixedly installed on the long cross bar 38, and the second vertebral gear 310 is meshed with the first vertebral gear 37. The long cross bar 38 is rotatably installed with the first vertical plate 32 through the servo motor 39, and a piston pump 311 is fixedly installed on the top right side of the second vertical plate 33.

[0031] Working principle: Before use, two bottom plate members 23 are correspondingly installed on one row of four rows of drop holes 22 opened on the top of the pit digging locomotive 1, or installed on two rows of two rows of drop holes 22 according to the number of planting rows of seedlings to be transplanted; 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, and introduce the rhubarb seedlings into the inner hose 432 through the drop hole 22 and the guide bucket 436. The piston pump 311 encourages the increase and decrease of air between the outer hose 431 and the inner hose 432, so that the peristaltic tube 43 partially peristsates, and the rhubarb seedlings are introduced into the bottom ring 51, so that the rhubarb seedlings come into the funnel-shaped chamber formed by the digging and grabbing parts 52. The stepper motor 57 and the hydraulic cylinder 35 are started at the same time. 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, thereby utilizing the meshing transmission with the outer wall teeth 511 to drive the pit digging gripper 52 to rotate clockwise at the bottom of the bottom ring 51. The rotating and descending pit digging gripper 52 is utilized to dig a pit on the ground. After the pit digging is completed, the stepper motor 57 is turned off, the pit digging gripper 52 stops rotating, and the lifting assembly 3 is driven to rise up on the inner side of the pit digging locomotive 1 through the hydraulic cylinder 35, and then the pit digging gripper 52 is driven to rotate clockwise at the bottom of the bottom ring 51. Open the air valve stem 59, control the piston pump 311 to inflate the air guide rebound plate 525, so that the closed scraper plate 521 is stretched open, and the rhubarb seedlings are vertically transported into the dug pit, completing the automatic digging and transplanting process of the rhubarb seedlings; after the planting is completed, the digging locomotive 1 is started to drive the digging assembly 5 forward, and the digging and transplanting of the rhubarb seedlings are carried out at the next location. The operator needs to sit on the digging locomotive 1 to control the forward direction and the pause time of the digging locomotive 1, so as to realize the automatic digging and transplanting of the rhubarb seedlings; After the lifting assembly 3 returns to the initial position, the piston pump 311 is operated to extract the air in the extension bag 524, so that the scraper plate 521 is closed again to form a funnel shape, and then the air valve stem 59 is closed, and then the above operation is repeated to enter the automatic digging and transplanting cycle for the next batch of rhubarb seedlings.

[0032] Among them, by controlling the installation position of the two bottom plates 23 on the cover plate 21, the corresponding installation of the two bottom plates 23 and the four drop holes 22 in one row and four columns at the front end of the cover plate 21 can be achieved, or the corresponding installation of the two bottom plates 23 and the four drop holes 22 in two rows and two columns at the rear end of the cover plate 21 can be achieved, so as to realize the horizontal side-by-side bidirectional feeding working mode of the left and right sides of the rhubarb seedlings through the inclined conveyor belt 24, or realize the side-by-side feeding mode of the rhubarb seedlings at the front end or rear end of the cover plate 21 through the inclined conveyor belt 24. In this mode, the feeding method of the rhubarb seedlings is more flexible, and a front-to-back feeding method can be adopted, or a front-end feeding method or a rear-end feeding method can be adopted at the same time; the feeding direction is diverse and corresponds to different transplanting needs, and can be used in combination with the limited space on the pit digging locomotive 1 for placing rhubarb seedlings, as well as different arrangements for the number of planting rows of rhubarb seedlings.

[0033] Furthermore, the hydraulic cylinder 35 can be used to control the vertical descent height of the digging assembly 5 at the bottom of the bottom plate 42 installed on the horizontal plate frame 31, so as to control the digging depth of the digging assembly 5 in the soil. The planting depth of the rhubarb seedlings can be accurately controlled in combination with the specific length of the rhizomes of the rhubarb seedlings.

[0034] The second embodiment is based on the first embodiment. Figures 4 to 12 As shown, two sleeve members 45 are installed on the top plate 41 and the matching member 44, and a first angle ring 46 is fixedly connected to a corner of the top plate 41 near the matching member 44, a ring groove 49 is opened on the top of the first angle ring 46, and a double ring wall tooth 410 is fixedly installed on the inner wall of the ring groove 49, and a second angle ring 47 is fixedly connected to a corner of the matching member 44 near the top plate 41, and a small tooth rod 48 is fixedly installed on the bottom of the second angle ring 47, and the small tooth rod 48 is meshed with the double ring wall tooth 410 through the ring groove 49. The top plate 41 is installed with the rotating shaft rod 36 through the first angle ring 46, and the matching member 44 is fitted with the rotating shaft rod 36 through the second angle ring 47. Similarly, the bottom plate 42 at the bottom of the top plate 41 is installed with the rotating shaft rod 36 through the pin, and the other bottom plate 42 at the bottom of the matching member 44 is installed with the rotating shaft rod 36 through the pin.

[0035] The peristaltic tube fitting 43 includes an outer hose 431 installed in a sleeve member 45, an inner hose 432 is installed on the inner side of the outer hose 431, and the surfaces of the inner hose 432 and the outer hose 431 are fixedly connected with a neck ring portion 433 for increasing the toughness and retractable and foldable performance of the hose structure. A covering ring 434 is commonly installed on the top of the outer hose 431 and the inner hose 432, and a spiral air pipe 435 is fixedly inserted on the top of the covering ring 434 for connecting to the piston pump 311. A guide bucket 436 is threadedly installed in the middle of the top end of the covering ring 434 for guiding the rhubarb seedlings falling through the drop hole 22 into the inner hose 432.

[0036] The matching piece 44 includes a matching plate body 441 installed on the rotating shaft rod 36 with a pin, and a sleeve piece 45 is provided with a through hole 442 at the installation position on the matching plate body 441. A long screw 443 is threadedly installed on the side of the matching plate body 441 away from the top plate 41, and a telescopic rod 444 is installed on the inner side of the through hole 442 and is symmetrically installed on the opposite side of the long screw 443; the sleeve piece 45 includes a wide-side tube 451, which is assembled and installed with the matching plate body 441 through the through hole 442, and one end of the long screw 443 close to the wide-side tube 451 is rotatably installed with the wide-side tube 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 tube 451, and the wide-side tube 451 is movably installed with the matching plate body 441 through the telescopic rod 444 and the long screw 443.

[0037] The middle of the wide-edge tube 451 is fixedly installed with an elastic ring part 452, and two waist elastic strips 453 are symmetrically connected to the outer surface of the elastic ring part 452. The middle of the two waist elastic strips 453 is clamped with a weight ball 454, and the middle of the weight ball 454 is penetrated and connected with a guide rod 455. One end of the waist elastic strip 453 is connected to the elastic ring part 452, and the other end is connected to the inner wall of the through hole 442. The outer hose 431 is embedded and installed on the wide-edge tube 45 1 inside; wherein, the bottom edge ring diameter of the four hanging rings 56 installed on the two bottom plates 42 is larger than the bottom plate ring diameter of the sleeve member 45 installed on the matching member 44, so as to facilitate the installation of the pit digging assembly 5 on the bottom edge ring of the hanging ring 56 installed on the bottom plate 42; and the diameter of the through hole 442 is much larger than the inner diameter of the wide-edge tube 451, and the inner diameter of the inner hose 432 is larger than the maximum circle diameter of the vertical projection of an ordinary rhubarb seedling plant on the ground.

[0038] When in use, the servo motor 39 is started to drive the second vertebral gear 310 on the long crossbar 38 to rotate, thereby driving the rotating shaft rod 36 to rotate clockwise through the meshing transmission of the second vertebral gear 310 and the first vertebral gear 37, thereby driving the top plate 41 and the bottom plate 42 corresponding to the top plate 41 to rotate 90 degrees counterclockwise, and driving the matching member 44 and the other bottom plate 42 at the bottom thereof under the meshing transmission of the small gear rod 48 and the double ring wall teeth 410 in the inner wall of the annular groove 49. The rotating shaft 36 is rotated 90° clockwise until the long edges of the top plate 41 and the matching piece 44 are in contact with each other, and the long edges of the two bottom plates 42 are in contact with each other, so that the guide buckets 436 on the four peristaltic tubes 43 correspond to the bottom of the four material drop holes 22 in two rows and two columns installed at the rear end of the cover plate 21. Through the automatic clamping and guiding cooperation of the material guide assembly 2 for the rhubarb seedlings, the automatic digging and transplanting function of the digging device for the rhubarb seedlings is automatically switched between one row and four columns and two rows and two columns.

[0039] Among them, when the digging assembly 5 is in the initial one row and four columns structural installation state through the plate frame assembly 4 combined with the lifting component 3 and the material guide assembly 2, the digging device at this time can automatically dig one row and four columns of earth pits. At this time, the planting area is wide and the operating range is large; when the digging device automatically switches to the two rows and two columns working mode, the digging device at this time can automatically dig two columns and two rows of earth pits. At this time, the planting distance is far and the planting speed is fast, and the transplanting efficiency of rhubarb seedlings is high, which is convenient for planting personnel to choose and use them in time according to the actual climate changes of the day, the specific freshness of the rhubarb seedlings, the planting area of ​​the land, and the effective time available for transplanting.

[0040] During the period when the rhubarb seedlings are transported vertically downward inside the peristaltic tube 43, the transport process is mainly achieved by the rhubarb seedlings falling downward autonomously under the action of gravity; Secondly, combined with the reciprocating operation process of the piston pump 311 to fill and extract the air between the outer hose 431 and the inner hose 432, the neck ring part 433 on the outer hose 431 and the inner hose 432 is continuously contracted and expanded to realize the self-peristalsis inside the peristaltic tube 43, thereby performing contactless and non-damage auxiliary peristalsis and feeding for the rhubarb seedlings stuck on the inner side of the inner hose 432, which can prevent larger rhubarb seedlings from being blocked in the inner hose 432, and can also utilize the smooth structure inside the inner hose 432 to realize the contactless and non-damage peristaltic anti-blocking feeding function for the rhubarb seedlings.

[0041] Furthermore, by fitting the bottom of the outer hose 431 with the inner wall of the hanging ring 56, the vibration generated by the digging grab 52 when digging the transplanting pit can be transmitted to the peristaltic tube 43 through the bottom ring 51 and the hanging ring 56, thereby providing an additional shaking and material removal effect for the peristaltic tube 43 in the process of conveying the rhubarb seedlings, further promoting the peristaltic feeding of the rhubarb seedlings by the peristaltic tube 43, and helping the inner hose 432 to avoid blockage inside the rhubarb seedlings.

[0042] In addition, when the vibration generated by the digging gripper 52 when digging the transplanting pit is transmitted to the peristaltic tube 43, the two waisted elastic strips 453 on the elastic ring part 452 will be further driven to swing between the wide-edge tube 451 and the inner wall of the through hole 442, thereby causing the waisted elastic strips 453 to be repeatedly squeezed between the two. Under the action of inertia, the guide rod 455 on the weight-bearing ball 454 can perform irregular impact on the elastic ring part 452, thereby expanding the amplitude between the wide-edge tube 451 and the peristaltic tube 43, thereby further increasing the overall shaking amplitude of the peristaltic tube 43. Combined with the dual effects of the peristaltic tube 43's own peristalsis and shaking, the peristaltic tube 43 can unload materials quickly without blocking.

[0043] In addition, before transplanting the rhubarb seedlings, the long screw 443 can be twisted into the matching plate body 441, and the wide-edge tube 451 can be pushed toward one side of the telescopic rod 444 by the long screw 443, thereby changing the assembly position of the wide-edge tube 451 in the through hole 442, and then changing the spacing of the pit digging assembly 5 in the horizontal direction, so as to achieve precise control of the spacing of the pits to be dug for each row of rhubarb seedlings, and then achieve flexible adjustment of different transplanting spacings of rhubarb seedlings in the horizontal direction, which can be adjusted in real time according to the plant size of the rhubarb seedlings and the amount of land available for planting.

[0044] The third embodiment is based on the first and second embodiments. Figures 13 to 19As shown, two suspension rods 53 are installed on the sides of the bottom ring 51 in a centrally symmetrical shape, and the top of the suspension rod 53 is fixedly installed on the bottom ring of the wide-edge tube 451, an auxiliary gear 54 is installed at the bottom of the suspension rod 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 is meshed with the outer wall tooth 511. A stepper motor 57 is also installed at the bottom of the wide-edge tube 451, and a main gear 58 is installed at the bottom of the stepper motor 57, and the main gear 58 is meshed with the outer wall tooth 511. The bottom ring 51 is rotatably installed with the suspension ring 56 through the cooperation of the main gear 58 and the outer wall tooth 511.

[0045] The pit digging grasping member 52 includes a scraper plate 521 fixedly mounted on the bottom of the bottom ring 51 and installed in a circular array. A notch 522 is opened through the side of the scraper plate 521. The notch 522 can provide a space for the scraper plates 521 to retract and expand outwards, and at the same time provide a window for the inner side of the pit digging grasping member 52 to circulate with the outside air, so as to prevent the inner side of the pit digging grasping member 52 from being too dry, and avoid the rhubarb seedlings temporarily existing in the pit digging grasping member 52 in a high temperature environment from being stuffy and burning. A spiral scraper 523 is fixedly connected to the outer surface of the scraper plate 521 and is arranged in a spiral shape. An extension bag portion 524 is connected between every two adjacent scraper plates 521. The whole is made of a thickened and wear-resistant material, and the extension bag portion 524 is also arranged in a spiral shape, which can be stretched and automatically rebound and retract. An air-guiding rebound sticker is fixedly connected to the top edge of the outer surface of the scraper plate 521 The top of the scraper plate 521 is elastically assembled with the bottom ring 51 through the air-guiding rebound plate 525, and the bottoms of the outer hose 431 and the inner hose 432 are inserted into the inner side of the bottom ring 51 through the sleeve member 45 on the bottom plate 42, and the bottom of the outer hose 431 is in contact with the inner wall of the hanging ring 56, so that the external force vibration can be transmitted to the peristaltic pipe 43 through the pit grabbing member 52, the bottom ring 51 and the hanging ring 56. 1 and the bottom end of the inner hose 432 are connected and closed, so that when the outer hose 431 and the inner hose 432 are blocked at the top by the sealing ring 434, the sandwich chamber in the middle is independent of the outside air; wherein, the bottom of the air valve stem 59 is connected to the extension bag part 524 through the bottom ring 51 and the air guide rebound plate 525, and the air valve stem 59 is used to control the opening and closing of the air flow path connecting the extension bag part 524 with the chamber between the outer hose 431 and the inner hose 432.

[0046] After the control piston pump 311 evacuates the air inside the extension bag 524, and the air valve stem 59 is closed in time, so that the space where the air path inside the extension bag 524 is located is relatively independent, while ensuring that the interior of the extension bag 524 is in a relatively vacuum state, the extension bag 524 in a vacuum state is utilized to enhance the closing and tightening force between adjacent scraper plates 521, and at the same time, with the help of the rebound effect and binding effect of the air-guiding rebound plate 525, the scraper plates 521 are tightly attached to the bottom sides of the bottom ring 51 and tightened toward the center to close, thereby realizing the automatic expansion and closing of the pit digging gripper 52, the automatic excavation of the soil pit for transplanting rhubarb seedlings, and the automatic transplanting of the rhubarb seedlings in the soil pit.

[0047] By using the spiral scraper installed on the outer surface of the scraper plate 521, the digging grab 52 can drill down into the soil and throw the soil to the surroundings along the guidance of the spiral scraper 523. It can also break up the hard lumps of soil and hard sand and gravel that may exist in the soil, destroy the roots of weeds, and clean them out of the pit, avoiding the resistance encountered during manual excavation and the tedious process of cleaning the roots of weeds, thereby providing a good planting environment for rhubarb seedlings.

[0048] The auxiliary gear 54 cooperates with the main gear 58 to drive the bottom ring 51 to rotate at the bottom of the hanging ring 56, and the baffle 55 is used to block the bottom of the outer wall teeth 511. Together with the clamping setting of the bottom ring 51 at the bottom of the hanging ring 56, the position of the bottom ring 51 is limited both horizontally and vertically, ensuring that the outer wall teeth 511 are always meshed with the main gear 58. At the same time, it is ensured that the digging grab 52 is not blocked by strong weed roots when digging the pit, which causes the outer wall teeth 511 and the main gear 58 to be misaligned, thereby ensuring the smooth operation of the digging grab 52.

[0049] Moreover, when the pit digging device is not transplanting rhubarb seedlings, it can also perform the same transplanting operation on plants of the same type, and can also realize the functions of autonomous pit digging and sowing of seeds. The specific usage method is the same as the pit digging and transplanting process of rhubarb seedlings in the above process, realizing the versatility and practicality of one machine for multiple uses.

[0050] The top of the bottom ring 51 is provided with an annular air cavity in an annular shape, which is not shown in the figure; the bottom of the hanging ring 56 is provided with a concave annular groove structure that can be correspondingly engaged with the annular air cavity, so as to ensure that the bottom ring 51 is located at the bottom of the hanging ring 56 and can rotate at the bottom of the hanging ring 56; and the cavity inside the bottom ring 51 is provided with a cavity that can guide air, and the cavity is connected to the air guide rebound plate 525, and the cavity is connected to the air valve stem 59 on the hanging ring 56 through the annular air cavity, as shown in FIG. Fig.19 The structural diagram shown in .

[0051] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A pit digging device for transplanting rhubarb seedlings, comprising a pit digging locomotive (1), characterized in that: A material guide assembly (2) is installed on the top of the pit digging locomotive (1), and the material guide assembly (2) includes a cover plate (21) covering the top of the pit digging locomotive (1), and one side of the cover plate (21) is hinged to the top of the pit digging locomotive (1), and a material drop hole (22) is opened through the top of the cover plate (21), and two bottom plate members (23) are also threadedly installed on the top of the cover plate (21), and an inclined conveyor belt (24) is symmetrically installed at the top edge of each bottom plate member (23) and is arranged in an inclined shape, and four valve covers (26) are installed on the top of the two bottom plate members (23); The invention also comprises a lifting assembly (3), which is installed on the inner side of the pit digging locomotive (1), and the lifting assembly (3) comprises a horizontal plate frame (31) installed on the inner side of the pit digging locomotive (1), a first vertical plate (32) being fixedly installed on the rear end of the horizontal plate frame (31), a second vertical plate (33) being fixedly installed on the front end of the horizontal plate frame (31), a card clamp (34) being slidably installed on the inner middle part of the first vertical plate (32) and the second vertical plate (33), a hydraulic cylinder (35) being fixedly installed on the bottom end of the card clamp (34), and a bottom flange of the hydraulic cylinder (35) being installed on the horizontal plate frame (31), and an end of the card clamp (34) away from the horizontal plate frame (31) being fixedly connected to the inner wall of the pit digging locomotive (1); A plate rack assembly (4), the plate rack assembly (4) being mounted on the lifting assembly (3), a top plate (41) and a bottom plate (42) being mounted between the second vertical plate (33) and the rotating shaft rod (36), the number of the bottom plate (42) being two and being mounted in parallel at the bottom of the top plate (41), a matching piece (44) being mounted in parallel on the side of the top plate (41), and the top plate (41) and the bottom plate (42) and Two peristaltic tubes (43) are installed between the matching piece (44) and another bottom plate (42), and the number of peristaltic tubes (43) is four in total, wherein the top plate (41) has the same structure as the bottom plate (42) corresponding to its bottom, and the matching piece (44) has the same structure as another bottom plate (42) corresponding to its bottom, wherein the matching piece (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 the plate frame assembly (4), the pit digging assembly (5) comprising a bottom ring (51) installed at the bottom of the bottom plate (42), a pit digging gripper (52) installed at the bottom of the bottom ring (51), a lifting ring (56) clamped and installed at the top of the bottom ring (51), four gas valve stems (59) connected in a circular array at the top of the lifting ring (56), the top of the gas valve stem (59) is fixedly connected to a base (510), the top of the base (510) is threadedly installed on the bottom ring of the wide-edge tube (451), wherein the top of the gas valve stem (59) passes through the base (510) and is connected to the chamber between the outer hose (431) and the inner hose (432).

2. The pit digging device for transplanting rhubarb seedlings according to claim 1, characterized in that: A rotating shaft rod (36) is clamped at a position near the middle of the top of the horizontal plate frame (31), and a first vertebral gear (37) is fixedly installed on the top of the rotating shaft rod (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 vertebral gear (310) is fixedly installed on the long horizontal bar (38), and the second vertebral gear (310) is meshed with the first vertebral gear (37). The long horizontal bar (38) is rotatably installed with the first vertical plate (32) through the servo motor (39), and a piston pump (311) is fixedly installed on the right side of the top of the second vertical plate (33).

3. The pit digging device for transplanting rhubarb seedlings according to claim 1, characterized in that: Two sleeve members (45) are installed on both the top plate (41) and the matching member (44); a first angle ring (46) is fixedly connected to a corner of the top plate (41) near the matching member (44); a ring groove (49) is provided on the top of the first angle ring (46); a double ring wall tooth (410) is fixedly installed on the inner side wall of the ring groove (49); a second angle ring (47) is fixedly connected to a corner of the matching member (44) near the top plate (41); a small tooth rod (48) is fixedly installed on the bottom of the second angle ring (47); the small tooth rod (48) meshes with the double ring wall tooth (410) through the ring groove (49); the top plate (41) is installed with a pin on the rotating shaft rod (36) through the first angle ring (46); and the matching member (44) is fitted with the rotating shaft rod (36) through the second angle ring (47).

4. A pit digging device for transplanting rhubarb seedlings according to claim 3, characterized in that: The peristaltic tube (43) comprises an outer hose (431) installed in a sleeve member (45), an inner hose (432) is installed on the inner side of the outer hose (431), a neck ring (433) is fixedly connected to the surface of the inner hose (432) and the outer hose (431), a sealing ring (434) is installed on the top of the outer hose (431) and the inner hose (432), a spiral air pipe (435) is fixedly inserted on the top of the sealing ring (434), and a guide bucket (436) is threadedly installed in the middle of the top of the sealing ring (434).

5. The pit digging device for transplanting rhubarb seedlings according to claim 4, characterized in that: The matching member (44) comprises a matching plate body (441) which is bolted onto a rotating shaft rod (36); a through hole (442) is provided at a mounting position of the sleeve member (45) on the matching plate body (441); a long screw rod (443) is threadedly mounted on a side of the matching plate body (441) away from the top plate member (41); a telescopic rod (444) is mounted on the inner side of the through hole (442) and is symmetrically mounted on the opposite side of the long screw rod (443).

6. The pit digging device for transplanting rhubarb seedlings according to claim 5, characterized in that: The sleeve member (45) comprises a wide-edge tube (451), the wide-edge tube (451) is assembled and installed with the matching plate body (441) through the through hole (442), one end of the long screw rod (443) close to the wide-edge tube (451) is rotatably installed with the wide-edge tube (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-edge tube (451), and the wide-edge tube (451) is movably installed with the matching plate body (441) through the cooperation of the telescopic rod (444) and the long screw rod (443).

7. The pit digging device for transplanting rhubarb seedlings according to claim 6, characterized in that: An elastic ring portion (452) is fixedly installed in the middle of the wide-edge tube (451), and two waisted elastic strips (453) are symmetrically connected to the outer surface of the elastic ring portion (452), and a weight-bearing ball (454) is clamped in the middle of the two waisted elastic strips (453), and a guide rod (455) is connected to the middle of the weight-bearing ball (454), wherein one end of the waisted elastic strip (453) is connected to the elastic ring portion (452), and the other end is connected to the inner wall of the through hole (442), and the outer hose (431) is embedded and installed on the inner side of the wide-edge tube (451).

8. The pit digging device for transplanting rhubarb seedlings according to claim 1, characterized in that: Two suspension rods (53) are installed on the sides of the bottom ring (51) in a centrally symmetrical shape, and the top of the suspension rod (53) is fixedly installed on the bottom ring of the wide-edge tube (451). An auxiliary gear (54) is installed at the bottom of the suspension rod (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) is meshed with the outer wall tooth (511). A stepper motor (57) is also installed on the bottom ring of the wide-edge tube (451), and a main gear (58) is installed at the bottom of the stepper motor (57), and the main gear (58) is meshed with the outer wall tooth (511). The bottom ring (51) is rotatably installed with the suspension ring (56) through the cooperation of the main gear (58) and the outer wall tooth (511).

9. The pit digging device for transplanting rhubarb seedlings according to claim 8, characterized in that: The pit digging gripper (52) comprises a scraper plate (521) fixedly mounted on the bottom of the bottom ring (51) and arranged in a circular array. A notch (522) is provided through the side of the scraper plate (521). A spiral scraper (523) is fixedly connected to the outer surface of the scraper plate (521) and arranged in a spiral shape. An extended sac (524) is connected between every two adjacent scraper plates (521). The top edge of the outer surface of the scraper plate (521) The side is fixedly connected with an air guide rebound plate (525), and the top of the scraper plate (521) is elastically assembled with the bottom ring (51) through the air guide rebound plate (525), wherein the bottom of the air valve stem (59) is connected to the extension bag part (524) through the bottom ring (51) and the air guide rebound plate (525), and the air valve stem (59) is used to control the opening and closing of the air flow path connecting the extension bag part (524) and the chamber between the outer hose (431) and the inner hose (432).

10. An application of the pit digging device for transplanting rhubarb seedlings according to any one of claims 1 to 9, characterized in that: The steps include: Step 1: According to the number of planting rows of seedlings to be transplanted, two bottom plate members (23) are correspondingly installed on the one row of four rows of drop holes (22) opened on the top of the pit digging locomotive (1), or installed on the two rows of two rows of drop holes (22); Step 2: Start the inclined conveyor belt (24) to convey the rhubarb seedlings to each valve cover (26) accordingly. 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, and guide the rhubarb seedlings into the inner hose (432) through the drop hole (22) and the guide bucket (436). The piston pump (311) is used to increase and decrease the air between the outer hose (431) and the inner hose (432), so that the peristaltic tube (43) partially peristsates, and guides the rhubarb seedlings into the bottom ring (51), so that the rhubarb seedlings come into the funnel-shaped chamber formed by the digging and grabbing parts (52); Step 3: Start the stepper motor (57) and the hydraulic cylinder (35) at the same time, and drive the lifting assembly (3) to descend as a whole through the hydraulic cylinder (35), and drive the main gear (58) to rotate counterclockwise through the stepper motor (57), so as to drive the pit digging gripper (52) to rotate clockwise at the bottom of the bottom ring (51) by means of meshing transmission with the outer wall teeth (511), and use the rotating and descending pit digging gripper (52) to dig a pit on the ground. After the pit digging is completed, the hydraulic cylinder (35) drives the lifting assembly (3) to rise up inside the pit digging locomotive (1), and then opens the air valve stem (59) to control the piston pump (311) to inflate the inside of the air guide rebound plate (525), so that the closed scraper plate (521) is opened, and the rhubarb seedlings are vertically transported into the pit, completing the automatic pit digging and transplanting process of the rhubarb seedlings. After the lifting assembly (3) returns to the initial position, the piston pump (311) is operated to extract the air in the extension bag (524), so that the scraper plate (521) is closed again to form a funnel shape, and then the air valve stem (59) is closed, and then the above operation is repeated to enter the automatic pit digging and transplanting cycle process for the next batch of rhubarb seedlings.

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