A seedling raising device for greenhouse cultivation and its working method

Abstract

This invention relates to a seedling raising device and its working method for greenhouse cultivation, comprising end plates, two end plates connected to connecting plates on both sides, a pneumatic cylinder mounted on the connecting plate, the telescopic end of the pneumatic cylinder connected to a side plate, a fixed hollow plate provided on the inner side of the side plate, and two fixed hollow plates slidably mounted with a sliding plate, a plurality of conveyor wheels rotatably mounted on the inner side of the side plate, the conveyor wheels on the same side plate being connected by a conveyor belt, and a seedling tray mechanism moving along the conveyor belt; the film unfolding and unfolding structure, through the coordinated movement of the hollow rotating arm and the telescopic arm, quickly completes the film covering and unfolding operations, which can create microclimates with different temperatures and humidity in the same greenhouse, thereby adapting to the growth needs of various crops, achieving precise temperature control, energy saving and consumption reduction, extending the planting period, and isolating different crop areas to reduce cross-infection, and classifying and cultivating seedlings of different varieties and growth conditions in the same greenhouse.

Description

Technical Field

[0001] This invention relates to the field of greenhouse cultivation technology, and in particular to a seedling raising device for greenhouse cultivation and its working method. Background Technology

[0002] Greenhouse cultivation refers to a modern agricultural technology that utilizes artificially constructed light-transmitting and heat-insulating structures to create suitable growing conditions for crops by controlling environmental factors such as temperature, humidity, light, and carbon dioxide concentration. Its core characteristics are breaking the limitations of natural seasons, enabling off-season production, year-round continuous planting, and precision management, making it an important component of facility agriculture.

[0003] Existing seedling raising devices generally use disposable trays for cultivation, which makes it impossible to recycle the trays, increasing the cost of seedling raising. Furthermore, when transplanting seedlings, directly pulling them can easily damage the roots. Cultivating different varieties of crops with different growth cycles in the same greenhouse can also lead to cross-infection between crops, as different crops require different temperatures and humidity at different stages. Summary of the Invention

[0004] The present invention addresses the problem of providing a seedling raising device and its working method for greenhouse cultivation. It solves the problems of existing seedling raising devices that generally use disposable seedling trays for cultivation, which makes it impossible to recycle the trays, thus increasing the cost of seedling raising. Furthermore, during seedling transplanting, directly pulling the seedlings can easily damage the roots of the seedlings. Additionally, different varieties of crops with different growth cycles are cultivated in the same greenhouse, and different crops require different temperatures and humidity at different stages, which can easily lead to cross-infection between crops.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A seedling raising device for greenhouse cultivation includes end plates, with two end plates connected to connecting plates on their respective sides. A pneumatic cylinder is installed on the connecting plate, and the telescopic end of the pneumatic cylinder is connected to a side plate. A fixed hollow plate is provided on the inner side of the side plate, and the two fixed hollow plates are slidably installed with a sliding plate. A plurality of conveyor wheels are rotatably installed on the inner side of the side plate. The conveyor wheels located on the same side plate are connected by a conveyor belt, and a seedling tray mechanism moves along the conveyor belt. A spray pipe is installed between the two end plates.

[0007] One of the side plates is equipped with a take-up drum at the top, and a hollow rotating arm is rotatably installed on the inner side of the end plate. The two hollow rotating arms are connected by a connecting shaft. A telescopic arm is telescopically installed inside the hollow rotating arm, and the two telescopic arms are connected to a connecting rod. A winding shaft is rotatably installed inside the take-up drum, and a film is wound on the winding shaft. The film is connected to the connecting rod.

[0008] Preferably, a first motor is installed on the side plate, the output end of the first motor is connected to a transmission wheel at one end of one of the side plates, and a polygonal shaft is slidably installed through the center of the two transmission wheels at the other ends of the two side plates.

[0009] Preferably, one of the end plates has a slot, the end of the winding drum is fitted with a baffle through the slot, a second motor is mounted on the baffle, and the second motor is connected to the winding shaft.

[0010] Preferably, a third motor is mounted on one of the end plates, and the output end of the third motor is connected to the end of the hollow rotating arm.

[0011] Preferably, a fourth motor is installed on the bottom side of the hollow rotating arm, and a threaded rod is installed inside the hollow rotating arm at the output end of the fourth motor. A threaded hole is opened inside the telescopic arm, and the threaded hole is threadedly connected to the threaded rod.

[0012] Preferably, the cavity plate mechanism includes a frame, with support plates on both sides of the frame. The frame is arranged in a rectangular array with a plurality of fixed cavity structures. A plurality of connecting columns perpendicular to the support blocks are installed inside the frame. Mounting cavity structures are installed on the fixed cavity structures, and the cavity formed by the fixed cavity structures and the mounting cavity structures is an inverted trapezoidal structure that is "wider at the top and narrower at the bottom". A cavity top plate is installed on the outer side of the top of the mounting cavity structure.

[0013] Preferably, the fixing hole structure includes two hole bottom shells, the mounting hole structure includes two hole top shells, the hole bottom shells have a limiting groove on the top side, and the hole top shells have a support block on the bottom side.

[0014] Preferably, the bottom shells of adjacent mounting holes are connected by connecting blocks, and connecting blocks are also provided on the outer sides of the bottom shells of the mounting holes on both sides of the frame. The connecting blocks are slidably installed with the connecting columns. The top shells of adjacent mounting hole structures on the same horizontal line are connected by support blocks, and the top shells of two holes in the same mounting hole structure are not connected by support blocks.

[0015] Preferably, a limiting push plate is slidably installed on the connecting column, a threaded sleeve is installed on the outside of the frame, and a movable rod is threadedly installed inside the threaded sleeve, the end of the movable rod being rotatably connected to the limiting push plate.

[0016] A method for operating a seedling raising device for greenhouse cultivation, the specific operating steps of which are as follows:

[0017] Step 1: Assemble the seedling tray mechanism and install the installation hole structures of different depths onto the fixed hole structure. At this time, the limiting block is inserted into the limiting groove. At this time, different depth holes are used according to the seedling varieties. Then, install the top plate of the hole onto the outside of the installation hole structure and support it with the support block. The side plate is moved by the extension and retraction of the pneumatic cylinder. Adjust the distance between the two side plates to match the width of the seedling tray mechanism. At this time, the winding drum moves in the drum groove. The drum groove is always kept closed by the baffle. The fourth motor drives the threaded rod to rotate, which in turn drives the threaded telescopic arm to move in the hollow rotating arm. Adjust the matching length of the hollow rotating arm and the telescopic arm.

[0018] Step 2: Place the seed tray mechanism containing potting soil and seeds on the conveyor belt. The first motor works, and the multi-sided shaft cooperates to realize the transmission of the conveyor wheel and the conveyor belt, thereby driving the seed tray mechanism to move. The seed tray mechanism located at the end of the device is placed into the device in an orderly manner, and watering and fertilization are carried out regularly through the spray pipe.

[0019] Step 3: The third motor drives the hollow rotating arm to rotate, and the two hollow rotating arms rotate synchronously through the connecting shaft. At this time, the telescopic arm drives the connecting rod to swing from one end plate to the other end plate. At this time, the film is pulled out from the take-up drum and covers the outside of the side plate. The second motor drives the film to rotate around the shaft to roll up and down. The end plate, the fixed hollow plate, the sliding plate and the film form a closed seedling space.

[0020] Step 4: After the seedlings are grown, move the film back to its initial position and retract it. After removing the seedling tray mechanism from the end plate, the conveyor belt will move the remaining seedling tray mechanisms to the end plate for easy removal. When transplanting the seedlings from the seedling tray mechanism, remove the top plate of the hole and rotate the movable rod to move the limiting push plate. At this time, the bottom shell of the hole will move along the connecting column to separate the two bottom shells of the hole structure that fix the hole structure and the two top shells of the hole structure that install the hole structure, so that the seedlings can be taken out from the holes.

[0021] The beneficial effects of this invention are: the modular design of fixed hole structure and replaceable installation hole structure, the cooperation of limiting groove and support block to realize the quick replacement of holes of different depths, the inverted trapezoidal hole structure and the movable rod driven split shell design, the bottom shell of the hole of the same fixed hole structure is automatically separated when transplanting seedlings, which facilitates the quick separation of seedlings from the seedling tray mechanism and minimizes root damage to seedlings. The overall modular disassembly and assembly design of the seedling tray mechanism makes it easy to adjust according to the type of seedling.

[0022] The pneumatic cylinder-driven side plate enables spacing adjustment, allowing the device width to adapt to different specifications of cavity trays. During movement, the length adjustment of the hollow rotating arm and telescopic arm, the movement of the fixed hollow plate and sliding plate, and the cooperation of the cylinder groove and baffle facilitate the sealing of the space after film coating. The coordinated design of the conveyor wheel, conveyor belt, and polygonal shaft enables the reciprocating movement of the cavity tray mechanism, facilitating the loading and unloading of the cavity tray mechanism.

[0023] The film covering and uncovering structure quickly completes the film covering and uncovering operations through the coordinated movement of the hollow rotating arm and the telescopic arm. It can create microclimates with different temperatures and humidity within the same greenhouse, thereby adapting to the growth needs of various crops, achieving precise temperature control, energy saving and consumption reduction, extending the planting period, and isolating different crop areas to reduce cross-infection. It also allows for the classified cultivation of seedlings of different varieties and growth conditions within the same greenhouse. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the first internal structure of the present invention;

[0026] Figure 3 This is a schematic diagram of the second internal structure of the present invention;

[0027] Figure 4 This is an overall sectional view of the present invention;

[0028] Figure 5 This is a cross-sectional view of the hollow rotating arm and telescopic arm in this invention;

[0029] Figure 6 This is a schematic diagram of the acupoint plate mechanism of the present invention;

[0030] Figure 7 This is a top view of the acupoint mechanism of the present invention;

[0031] Figure 8 This is a cross-sectional view of the acupoint mechanism of the present invention;

[0032] Figure 9 This is a schematic diagram of the fixing hole structure and the mounting hole structure of the present invention.

[0033] Legend:

[0034] 1. End plate; 2. Connecting plate; 3. Pneumatic cylinder; 4. Side plate; 5. Fixed hollow plate; 6. Slide plate; 7. Conveyor wheel; 8. Conveyor belt; 9. Spray pipe; 10. Polygonal shaft; 11. First motor; 12. Take-up drum; 13. Drum groove; 14. Baffle; 15. Second motor; 16. Rotating shaft; 17. Film; 18. Hollow rotating arm; 19. Telescopic arm; 20. Connecting rod; 21. Connecting shaft; 22. 23. Third motor; 24. Fourth motor; 25. Threaded rod; 26. Threaded hole; 27. Frame; 28. Support plate; 29. ​​Connecting block; 20. Fixing hole structure; 31. Mounting hole structure; 32. Hole bottom shell; 33. Hole top shell; 34. Limiting block; 35. Limiting groove; 36. Supporting block; 37. Hole top plate; 38. Connecting column; 39. Limiting push plate; 40. Movable rod; 41. Threaded sleeve. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] Specific implementation examples are given below.

[0037] See Figures 1-9 A seedling raising device for greenhouse cultivation includes end plates 1, with two end plates 1 connected to connecting plates 2 on both sides respectively. A pneumatic cylinder 3 is installed on the connecting plate 2, and the telescopic end of the pneumatic cylinder 3 is connected to a side plate 4. A fixed hollow plate 5 is provided on the inner side of the side plate 4, and the two fixed hollow plates 5 are slidably installed with a sliding plate 6. Several conveyor wheels 7 are rotatably installed on the inner side of the side plate 4. The conveyor wheels 7 located on the same side plate 4 are connected by a conveyor belt 8, and the seedling tray mechanism moves along the conveyor belt 8. A spray pipe 9 is installed between the two end plates 1.

[0038] A take-up drum 12 is mounted on the top of one of the side plates 4. A hollow rotating arm 18 is rotatably mounted on the inner side of the end plate 1, and the two hollow rotating arms 18 are connected by a connecting shaft 21. A telescopic arm 19 is telescopically mounted inside the hollow rotating arm 18, and the two telescopic arms 19 are connected to a connecting rod 20. A winding shaft 16 is rotatably mounted inside the take-up drum 12, and a film 17 is wound on the winding shaft 16. The film 17 is connected to the connecting rod 20. A first motor 11 is mounted on the side plate 4, and the output end of the first motor 11 is connected to a conveyor wheel 7 at one end of one of the side plates 4. Connecting the two side plates 4, a polygonal shaft 10 is slidably mounted through the center of the two conveyor wheels 7 at the other end of each side plate 4. A slot 13 is provided on one of the end plates 1, and a baffle 14 is installed through the slot 13 at the end of the winding drum 12. A second motor 15 is mounted on the baffle 14 and is connected to the rotating shaft 16. A third motor 22 is mounted on one of the end plates 1, and the output end of the third motor 22 is connected to the end of the hollow rotating arm 18. A fourth motor 23 is mounted on the bottom side of the hollow rotating arm 18, and the output end of the fourth motor 23 is located in the hollow... A threaded rod 24 is installed inside the rotating arm 18, and a threaded hole 25 is opened inside the telescopic arm 19, with the threaded hole 25 threadedly connected to the threaded rod 24. The side plate 4 driven by the pneumatic cylinder 3 realizes the spacing adjustment, so that the width of the device adapts to different specifications of cavity trays. During the movement, through the length adjustment of the hollow rotating arm 18 and the telescopic arm 19, the movement of the fixed hollow plate 5 and the sliding plate 6, and the cooperation of the cylinder groove 13 and the baffle 14, it is easy to ensure the sealing of the space after film covering. The conveyor wheel 7, the conveyor belt 8, and the polygonal shaft are also included. The design of 10 enables the reciprocating movement of the seedling tray mechanism, facilitating the loading and unloading of the seedling tray. The film 17 retraction structure, through the coordinated movement of the hollow rotating arm 18 and the telescopic arm 19, quickly completes the film covering and uncovering operations. It can create microclimates with different temperatures and humidity within the same greenhouse, thereby adapting to the growth needs of various crops, achieving precise temperature control, energy saving and consumption reduction, extending the planting period, and isolating different crop areas to reduce cross-infection. It allows for the classification and cultivation of seedlings of different varieties and growth conditions within the same greenhouse.

[0039] The cavity tray mechanism includes a frame 26, with support plates 27 on both sides of the frame 26. The frame 26 has a rectangular array of fixed cavity structures 29. Several connecting columns 37, perpendicular to the support blocks 35, are installed inside the frame 26. Mounting cavity structures 30 are installed on the fixed cavity structures 29, and the cavity formed by the fixed cavity structures 29 and the mounting cavity structures 30 is an inverted trapezoidal structure, wider at the top and narrower at the bottom. A cavity top plate 36 is installed on the outer side of the top of the mounting cavity structure 30. The fixed cavity structure 29 includes two cavity bottom shells 31, and the mounting cavity structure 30 includes two cavity top shells 32. A limiting groove 34 is formed on the top side of the cavity bottom shell 31, and a support block 35 is provided on the bottom side of the cavity top shell 32. Adjacent mounting cavity bottom shells 31 are connected by connecting blocks 28. Connecting blocks 28 are also provided on the outer sides of the mounting cavity bottom shells 31 on both sides of the frame 26, and the connecting blocks 28 are slidably installed with the connecting columns 37 and located on the same horizontal line. The top shells 32 of adjacent mounting hole structures 30 are connected by support blocks 35, but the top shells 32 of two holes in the same mounting hole structure 30 are not connected by support blocks 35. A limiting push plate 38 is slidably installed on the connecting column 37. A threaded sleeve 40 is installed on the outside of the frame 26, and a movable rod 39 is installed in the threaded sleeve 40. The end of the movable rod 39 is rotatably connected to the limiting push plate 38. The modular design of fixed hole structure 29 and replaceable mounting hole structure 30 is adopted. Through the cooperation of limiting groove 34 and support block 35, the holes of different depths can be quickly replaced. The inverted trapezoidal hole structure and the movable rod 39 drive the separate shell design. When transplanting seedlings, the bottom shell 31 of the same fixed hole structure 29 is automatically separated, which facilitates the quick separation of seedlings from the seedling tray mechanism and minimizes root damage to seedlings. The overall modular disassembly and assembly design of the seedling tray mechanism makes it easy to adjust according to the type of seedling.

[0040] Working principle:

[0041] Step 1: Assemble the seedling tray mechanism. Install the installation hole structures 30 of different depths onto the fixed hole structure 29. At this time, the limiting block 33 is inserted into the limiting groove 34. At this time, different depth holes are used according to the seedling varieties. Then, install the hole top plate 36 onto the outside of the installation hole structure 30 and support it with the support block 35. The pneumatic cylinder 3 extends and retracts to drive the side plate 4 to move. Adjust the distance between the two side plates 4 to match the width of the seedling tray mechanism. At this time, the winding drum 12 moves in the drum groove 13. The baffle 14 keeps the drum groove 13 closed. The fourth motor 23 works to drive the threaded rod 24 to rotate, which in turn drives the threaded telescopic arm 19 to move in the hollow rotating arm 18. Adjust the matching length of the hollow rotating arm 18 and the telescopic arm 19.

[0042] Step 2: Place the seed tray mechanism containing the potting soil and seeds on the conveyor belt 8. The first motor 11 works, and the polygonal shaft 10 cooperates to realize the transmission between the conveyor wheel 7 and the conveyor belt 8, thereby driving the seed tray mechanism to move. The seed tray mechanism located at the end of the device is placed into the device in an orderly manner, and watering and fertilization are carried out regularly through the spray pipe 9.

[0043] Step 3: The third motor 22 drives the hollow rotating arm 18 to rotate, and the two hollow rotating arms 18 rotate synchronously through the connecting shaft 21. At this time, the telescopic arm 19 drives the connecting rod 20 to swing from one end plate 1 to the other end plate 1. At this time, the film 17 is pulled out from the take-up drum 12 and covers the outside of the side plate 4. The second motor 15 drives the film 17 to rotate around the shaft 16 to roll up and unroll it. A closed seedling space is formed between the end plate 1, the fixed hollow plate 5, the sliding plate 6 and the film 17.

[0044] Step 4: After the seedlings are grown, move the film 17 to the initial position and retract the film 17. After removing the seedling tray mechanism from the end plate 1, the conveyor belt 8 moves the remaining seedling tray mechanisms to the end plate 1 to facilitate the quick removal of all seedling tray mechanisms. When transplanting the seedlings from the seedling tray mechanism, remove the top plate 36 of the hole and rotate the movable rod 39 to move the limiting push plate 38. At this time, the bottom shell 31 of the hole moves the top shell 32 of the hole along the connecting column 37, separating the two bottom shells 31 of the hole structure 29 and the two top shells 32 of the hole structure 30, and then taking the seedling out of the hole.

[0045] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A seedling raising device for greenhouse cultivation, characterized in that, Includes end plates (1), with two end plates (1) connected to connecting plates (2) on both sides respectively. A pneumatic cylinder (3) is installed on the connecting plate (2), and the telescopic end of the pneumatic cylinder (3) is connected to a side plate (4). A fixed hollow plate (5) is provided on the inner side of the side plate (4), and the two fixed hollow plates (5) are slidably installed with a sliding plate (6). Several conveyor wheels (7) are rotatably installed on the inner side of the side plate (4). The conveyor wheels (7) located on the same side plate (4) are connected by a conveyor belt (8), and the cavitation plate mechanism moves along the conveyor belt (8). A spray pipe (9) is installed between the two end plates (1). One of the side plates (4) is equipped with a take-up drum (12) on top. A hollow rotating arm (18) is rotatably installed on the inner side of the end plate (1), and the two hollow rotating arms (18) are connected by a connecting shaft (21). A telescopic arm (19) is telescopically installed inside the hollow rotating arm (18), and the two telescopic arms (19) are connected to a connecting rod (20). A winding shaft (16) is rotatably installed inside the take-up drum (12), and a film (17) is wound on the winding shaft (16). The film (17) is connected to the connecting rod (20). A third motor (22) is installed on one of the end plates (1), and the output end of the third motor (22) is connected to the end of the hollow rotating arm (18). A fourth motor (23) is installed on the bottom side of the hollow rotating arm (18). A threaded rod (24) is installed inside the hollow rotating arm (18) at the output end of the fourth motor (23). A threaded hole (25) is opened in the telescopic arm (19), and the threaded hole (25) is threadedly connected to the threaded rod (24). The cavity plate mechanism includes a frame (26), with support plates (27) on both sides of the frame (26). The frame (26) has a number of fixed cavity structures (29) arranged in a rectangular array. A number of connecting columns (37) perpendicular to the support block (35) are installed inside the frame (26). An installation cavity structure (30) is installed on the fixed cavity structure (29), and the cavity formed by the fixed cavity structure (29) and the installation cavity structure (30) is an inverted trapezoidal structure that is "wider at the top and narrower at the bottom". A cavity top plate (36) is installed on the outer side of the top of the installation cavity structure (30). The fixed cavity structure (29) includes two cavity bottom shells (31). The installation cavity structure (31) includes two cavity bottom shells (32). 0) Includes two cavity top shells (32), the cavity bottom shell (31) has a limiting groove (34) on the top side, the cavity top shell (32) is provided with a support block (35) on the bottom side, the adjacent cavity bottom shells (31) are connected by a connecting block (28), the cavity bottom shells (31) located on both sides of the frame (26) are also provided with a connecting block (28), and the connecting blocks (28) are all slidably installed with the connecting column (37). The cavity top shells (32) of the adjacent cavity structures (30) located on the same horizontal line are connected by a support block (35), and the two cavity top shells (32) of the same cavity structure (30) are not connected by a support block (35).

2. The seedling raising device for greenhouse cultivation according to claim 1, characterized in that, A first motor (11) is installed on the side plate (4). The output end of the first motor (11) is connected to a transmission wheel (7) at one end of one of the side plates (4), and a polygonal shaft (10) is slidably installed through the center of the two transmission wheels (7) at the other end of the two side plates (4).

3. A seedling raising device for greenhouse cultivation according to claim 2, characterized in that, One of the end plates (1) has a slot (13) and a baffle (14) is installed through the slot (13) at the end of the winding drum (12). A second motor (15) is installed on the baffle (14) and the second motor (15) is connected to the shaft (16).

4. A seedling raising device for greenhouse cultivation according to claim 3, characterized in that, A limiting push plate (38) is slidably installed on the connecting column (37), a threaded sleeve (40) is installed on the outside of the frame (26), and a movable rod (39) is threaded inside the threaded sleeve (40). The end of the movable rod (39) is rotatably connected to the limiting push plate (38).

5. The working method of the seedling raising device for greenhouse cultivation according to claim 4, characterized in that, The specific operational steps of this working method are as follows: Step 1: Assemble the seedling tray mechanism and install the installation hole structures (30) of different depths onto the fixed hole structure (29). At this time, the limiting block (33) is inserted into the limiting groove (34). At this time, different depth holes are used according to the seedling varieties. Then, the hole top plate (36) is installed on the outside of the installation hole structure (30) and supported by the support block (35). The side plate (4) is moved by the extension and retraction of the pneumatic cylinder (3). The distance between the two side plates (4) is adjusted to match the width of the seedling tray mechanism. At this time, the winding drum (12) moves in the drum groove (13). The drum groove (13) is always kept closed by the baffle (14). The fourth motor (23) works to drive the threaded rod (24) to rotate, which in turn drives the threaded telescopic arm (19) to move in the hollow rotating arm (18). The matching length of the hollow rotating arm (18) and the telescopic arm (19) is adjusted. Step 2: Place the seed tray mechanism containing the potting soil and seeds on the conveyor belt (8). The first motor (11) works and the polygonal shaft (10) cooperates to realize the transmission of the conveyor wheel (7) and the conveyor belt (8), thereby driving the seed tray mechanism to move. The seed tray mechanism is placed in the device in an orderly manner at the end of the device. Watering and fertilization are carried out regularly through the spray pipe (9). Step 3: The hollow rotating arm (18) is driven to rotate by the third motor (22). The two hollow rotating arms (18) are rotated synchronously by the connecting shaft (21). At this time, the telescopic arm (19) drives the connecting rod (20) to swing from one end plate (1) to the other end plate (1). At this time, the film (17) is pulled out from the take-up drum (12) and covers the outside of the side plate (4). The film (17) is rolled up and unrolled by the second motor (15) around the shaft (16). A closed seedling space is formed between the end plate (1), the fixed hollow plate (5), the sliding plate (6) and the film (17). Step 4: After the seedlings are raised, move the film (17) to the initial position and retract the film (17). After removing the seedling tray mechanism at the end of the end plate (1), the conveyor belt (8) drives the remaining seedling tray mechanisms to the end of the end plate (1) to facilitate the quick removal of all seedling tray mechanisms. When transplanting the seedlings from the seedling tray mechanism, remove the top plate (36) of the hole and then rotate the movable rod (39) to drive the limit push plate (38) to move. At this time, the bottom shell (31) of the hole drives the top shell (32) of the hole to move along the connecting column (37), separating the two bottom shells (31) of the hole structure (29) and the two top shells (32) of the hole structure (30) to separate the seedlings from the holes.

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