Multifunctional cultivation device and tomato seedling raising method

Abstract

The application discloses a multifunctional cultivation device and a tomato seedling raising method, which comprises a box body, a soil filling cavity, a seeding cavity and a watering cavity are sequentially arranged in the box body from bottom to top, a soil filling groove is arranged at the upper portion of the soil filling cavity in the box body, a soil adding channel communicated with the soil filling groove is arranged on the front side of the box body, a seeding groove is arranged above the seeding cavity in the box body, and a seed adding channel communicated with the seeding groove is arranged on the front side of the box body; conveying frames are arranged on the left and right sides of the box body, each conveying frame comprises a supporting table and lifting frames arranged upwards on the front and back sides of the supporting table, horizontal taking plates capable of sliding up and down and moving left and right are connected between the two lifting frames, and a plurality of supporting strips driven to lift through chains are connected to the two inner walls in front of and behind each seedling raising frame. The application adopts the multifunctional automatic seedling raising mode to raise seedlings, improves the work efficiency, reduces the labor cost, realizes the accurate control, and thus promotes the agricultural modernization process.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of agricultural seedling raising, in particular to a multifunctional cultivation device and a tomato seedling raising method. BACKGROUND

[0002] Excellent seedlings are the basis for ensuring high and stable yield of crops, and efficient seedling raising methods are directly related to the efficiency and benefit of the entire agricultural industry chain. Therefore, providing a stable, controllable and efficient seedling raising environment has become one of the focuses of modern agricultural research.

[0003] Traditional seedling raising activities mostly rely on manual operation. Although this method can meet some needs, it has many limitations. First, manual seedling raising is low in efficiency. From sowing, watering to transplanting, a lot of time and manpower is needed for each step, and it is difficult to quickly respond to market changes. Second, as the labor cost continues to rise, the cost of manual seedling raising is also increasing. In addition, due to the lack of support from automated equipment, it is difficult for manual seedling raising to achieve precise control of key parameters such as light, temperature and humidity, resulting in unstable seedling quality and being not conducive to standardized production. SUMMARY

[0004] The purpose of the present application is to provide a multifunctional seedling raising device, which adopts a multifunctional automatic seedling raising method to improve work efficiency, reduce labor costs, and simultaneously achieve precise control of various factors in the seedling raising process, thereby promoting the modernization process of agriculture.

[0005] The above technical purpose of the present application is achieved by the following technical scheme: a multifunctional seedling raising device, comprising a box body, a soil filling cavity, a sowing cavity and a watering cavity are sequentially arranged in the box body from bottom to top, an inlet and an outlet are arranged on the left and right sides of the box body at the soil filling cavity, the sowing cavity and the watering cavity, an upper end opening soil filling groove is arranged in the upper part of the soil filling cavity in the box body, a soil adding channel communicating with the soil filling groove is arranged on the front side of the box body, an upper end opening sowing groove is arranged above the sowing cavity in the box body, and a seed adding channel communicating with the sowing groove is arranged on the front side of the box body;

[0006] A plurality of soil filling holes arranged in an array are formed in the bottom of the soil filling groove, a first linear motor is installed at the top of the soil filling cavity in the box body, a mounting bracket perpendicular to the mover of the first linear motor is connected downward, a roller is rotatably connected to the mounting bracket, a first driving motor for driving the roller to rotate is installed at one end of the mounting bracket, and a plurality of soil scraping strips capable of contacting the bottom of the soil filling groove are arranged on the outer periphery of the roller;

[0007] The bottom of the seeding groove is provided with a plurality of seeding holes corresponding to the filling holes, each seeding hole is downwardly provided with a seeding groove formed by a plurality of elastic petals, a second linear motor is installed above the seeding groove in the box, the mover of the second linear motor is connected with a vertical connecting frame downwardly, the connecting frame is downwardly provided with a seed scraping strip in contact with the bottom of the seeding groove, a telescopic motor is installed downwardly at the top of the seeding cavity in the box, the lower end of the telescopic motor is connected with a pressing plate located above the second linear motor, the pressing plate is downwardly provided with a plurality of pressing shafts corresponding to the seeding holes;

[0008] A plurality of spray pipes are provided at the top of the watering cavity in the box, each spray pipe is downwardly provided with a plurality of irrigation spray heads arranged in a row;

[0009] A conveying frame is provided on the left and right sides of the box, the conveying frame comprises a support table and lifting frames upwardly provided on the front and rear sides of the support table, each lifting frame is open on one side thereof, each lifting frame is connected with a lifting chain arranged along the height direction thereof, one end of each lifting frame is provided with a second driving motor for driving the corresponding lifting chain to move, two lifting chains are connected with a horizontal cargo carrying table, the upper end of the horizontal cargo carrying table is provided with a third linear motor facing the box, the upper end of the mover of the third linear motor is connected with a horizontal cargo taking plate;

[0010] Each conveying frame is provided with a seedling raising frame away from the box, the front and rear inner walls of each seedling raising frame are provided with support frames, the left and right ends of each support frame are provided with vertically arranged support chains, each support frame is provided with a third driving motor for driving the support chains to move, a plurality of support strips are connected between the two support chains in each support frame, the lower part of each seedling raising frame close to the side of the corresponding conveying frame is provided with an output port, and each seedling raising frame away from the side of the corresponding conveying frame is provided with an input port.

[0011] Further provided in the application is that the two ends of the mounting frame are provided with first sliding sleeves, and the box is provided with first sliding shafts in sliding connection with each first sliding sleeve.

[0012] Further provided in the application is that one end of the roller shaft is connected with a transmission pulley, the power output shaft of the first driving motor is connected with a driving pulley matched with the transmission pulley, and the transmission pulley and the driving pulley are driven through a belt.

[0013] Further provided in the application is that the two ends of the connecting frame are provided with second sliding sleeves, and the box is provided with second sliding shafts in sliding connection with each second sliding sleeve.

[0014] The application further provides that the seed sowing scraping strip is provided with a Y-shaped gathering channel in the direction of the seed sowing channel.

[0015] The application further provides that the lower end of each pressing shaft is internally provided with a seed avoiding groove, and the outer edge of the lower end of each pressing shaft is chamfered.

[0016] The application further provides that the upper and lower ends of each lifting frame are rotatably connected with lifting sprockets engaged with corresponding lifting chains, and the power output shaft of each second driving motor is connected with a corresponding lifting sprocket.

[0017] The application further provides that the upper and lower ends of each supporting frame are rotatably connected with transmission shafts, the two ends of each transmission shaft are provided with supporting sprockets engaged with corresponding supporting chains, and the power output shaft of each third driving motor is connected with a corresponding supporting sprocket.

[0018] The application further provides that the inner wall of each seedling raising frame is provided with a light supplementing lamp.

[0019] The application further provides a tomato seedling raising method, which comprises the following steps:

[0020] S1, tray loading, placing a seedling raising tray from the input port so that the lower end of the seedling raising tray is placed on the two supporting strips;

[0021] S2, soil filling, adding prepared nutrient soil from the soil adding channel into the soil filling groove, driving the horizontal taking plate to extend into the seedling raising frame from the output port by the third linear motor on the conveying frame, lifting the seedling raising tray by driving the lifting chains by the second driving motor and the horizontal taking plate, then conveying the seedling raising tray into the soil filling cavity by the third linear motor, driving the roller to rotate by the first driving motor, and driving the roller to move back and forth in the soil filling groove by the first linear motor, and making the nutrient soil fall into the seedling raising groove of the seedling raising tray through the soil scraping strip, and then conveying the seedling raising tray into the seedling raising frame by the horizontal taking plate;

[0022] S3, seed sowing, adding prepared tomato seeds into the seed sowing groove through the seed sowing channel, conveying the seedling raising tray with nutrient soil in the seedling raising frame into the seed sowing cavity through the horizontal taking plate, driving the seed sowing scraping strip to move back and forth at the bottom of the seed sowing groove by the second linear motor, making the seeds fall into the seed sowing groove, driving the pressing shaft to move downward by the extension of the telescopic motor, pushing the elastic petals to open downward, making the seeds fall into the seedling raising groove of the seedling raising tray, completing the seed sowing, and then conveying the seedling raising tray into the seedling raising frame by the horizontal taking plate;

[0023] S4, watering, after completing the sowing, the seedling tray in the seedling frame is transported into the watering cavity through the horizontal taking plate, watering is carried out through the irrigation nozzle, the soil is moistened and no water drops, watering is carried out once every other day, after the seed germination, watering is carried out once every 2-3 days, when the seedling grows to about half the size of a palm, watering is carried out once every day;

[0024] S5, light supplement, after the seed germination, light supplement is carried out, and at least 14-16 hours of light per day is ensured;

[0025] S6, transplanting, when the germination is 20-25 days and 3 to 4 true leaves are generated, the seedling tray is taken out from the seedling frame from the output port, and tomato seedling transplanting is carried out.

[0026] In summary, the present application has the following beneficial effects:

[0027] Firstly, the seedling device can realize automatic soil filling, automatic sowing and automatic watering, can significantly improve the work efficiency, reduce the labor cost, and realize accurate control of various factors in the seedling process, provide high-quality seedling guarantee for factory planting, and promote the agricultural modernization process;

[0028] Secondly, the device is mainly divided into an operation part, a conveying part and a seedling part, through the cooperation of the three parts, automatic sowing can be quickly realized, and three-dimensional seedling can be carried out, watering and light supplement management can be automatically carried out according to the demand in the seedling process, and the automatic seedling suitable for large-scale production can be realized. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 is a schematic view of the overall structure of the present application;

[0030] Figure 2 is a partial sectional view for showing the internal structure of the box;

[0031] Figure 3 is used to show the relationship between the soil filling groove and the roller shaft;

[0032] Figure 4 is used to show the relationship between the sowing groove and the seed scraping strip;

[0033] Figure 5 is used to show the elastic leaflet at the bottom of the sowing groove;

[0034] Figure 6 is used to show the seed avoiding groove at the lower end of the pressing shaft;

[0035] Figure 7 is a partial sectional view for showing the internal structure of the conveying frame;

[0036] Figure 8is a partial sectional view for showing the internal structure of the seedling raising frame.

[0037] In the figure: 1, box; 11, filling cavity; 12, seeding cavity; 13, watering cavity; 14, inlet and outlet; 15, first sliding shaft; 16, second sliding shaft; 2, filling groove; 21, filling channel; 22, filling hole; 3, seeding groove; 31, seeding channel; 32, seeding hole; 33, elastic leaflet; 4, first linear motor; 41, mounting frame; 42, first sliding sleeve; 43, roller shaft; 44, first driving motor; 45, transmission pulley; 46, driving pulley; 47, soil scraping strip; 5, second linear motor; 51, connecting frame; 52, second sliding sleeve; 53, seed scraping strip; 54, gathering channel; 6, telescopic motor; 61, pressing plate; 62, pressing shaft; 63, seed avoiding groove; 7, spray pipe; 71, irrigation nozzle; 8, conveying frame; 81, support table; 82, lifting frame; 83, lifting chain; 84, lifting sprocket; 85, second driving motor; 86, horizontal cargo carrying table; 87, third linear motor; 88, horizontal cargo taking plate; 9, seedling raising frame; 91, support frame; 92, support chain; 93, transmission shaft; 94, support sprocket; 95, third driving motor; 96, support strip; 97, output port; 98, input port; 99, light supplementing lamp. DETAILED DESCRIPTION

[0038] The application will be further described below in conjunction with the drawings.

[0039] In the description of the present application, it needs to be understood that the terms "upper", "lower", "left", "right", "front", "back", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as limiting the application in that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the application.

[0040] In addition, the terms "horizontal", "vertical" and the like do not mean that the components must be absolutely horizontal or vertical, but can be slightly inclined. For example, "horizontal" only means that it is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0041] In the description of the present application, it also needs to be explained that, unless otherwise explicitly specified and limited, the terms "provided", "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, it can be directly connected, or indirectly connected through an intermediate medium, it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0042] Embodiment 1, refer to Figures 1-8 The utility model provides a multifunctional seedling raising device, including box 1, box 1 is sequentially provided with a fill soil cavity 11, a sowing cavity 12 and a watering cavity 13 from below to above, and box 1 is provided with an inlet and outlet 14 on the left and right sides of fill soil cavity 11, sowing cavity 12 and watering cavity 13, and box 1 is provided with a fill soil groove 2 with an upper opening in the upper portion of fill soil cavity 11, and box 1 is provided with a fill soil channel 21 communicating with fill soil groove 2 on the front side, so as to add nutrient soil to fill soil groove 2 through fill soil channel 21, and box 1 is provided with a sowing groove 3 with an upper opening above sowing cavity 12, and box 1 is provided with a seed adding channel 31 communicating with sowing groove 3 on the front side, so as to add seeds to sowing groove 3 during sowing.

[0043] The bottom of fill soil groove 2 is provided with a plurality of fill soil holes 22 arranged in an array, a first linear motor 4 is installed in the top of fill soil cavity 11 in box 1, the mover of first linear motor 4 is connected downward with a mounting bracket 41 perpendicular thereto, the two ends of mounting bracket 41 are both provided with a first sliding sleeve 42, two first sliding shafts 15 are provided in box 1 and are in sliding connection with the two first sliding sleeves 42 respectively, mounting bracket 41 is rotatably connected with a roller shaft 43, a first driving motor 44 is installed at one end of mounting bracket 41, one end of roller shaft 43 is connected with a transmission belt wheel 45, the power output shaft of first driving motor 44 is connected with a driving belt wheel 46 matched with transmission belt wheel 45, transmission belt wheel 45 and driving belt wheel 46 are driven through a belt, a plurality of soil scraping strips 47 capable of contacting the bottom of fill soil groove 2 are arranged on the outer periphery of roller shaft 43, roller shaft 43 rotates to constantly overturn and push the nutrient soil, so that the nutrient soil can fall into the seedling groove of the seedling tray through fill soil holes 22.

[0044] The bottom of sowing groove 3 is provided with a plurality of sowing holes 32 corresponding to fill soil holes 22 one by one, each sowing hole 32 is provided downward with a seed adding groove formed by four elastic petals 33, the elastic petals 33 can open downward, a second linear motor 5 is installed above the seed adding groove in box 1, the mover of second linear motor 5 is connected downward with a connecting bracket 51 perpendicular thereto, the two ends of connecting bracket 51 are both provided with a second sliding sleeve 52, two second sliding shafts 16 are provided in box 1 and are in sliding connection with the two second sliding sleeves 52 respectively, connecting bracket 51 is provided downward with a seed scraping strip 53 in contact with the bottom of sowing groove 3, the seed scraping strip 53 is provided with a plurality of approximately Y-shaped gathering channels 54 in the direction of seed adding channel 31, so that the seeds can be gathered in gathering channels 54, the seeds move in gathering channels 54 along with seed scraping strip 53, move along a row of sowing holes 32, and can be scraped into sowing holes 32 more quickly.

[0045] A telescopic motor 6 is arranged in the top of the sowing cavity 12 in the box body 1, and the lower end of the telescopic motor 6 is connected with a pressing plate 61 arranged above the second linear motor 5, the pressing plate 61 is provided with a plurality of pressing shafts 62 corresponding to the sowing holes 32, and the lower end of each pressing shaft 62 is provided with an avoiding groove 63, so that the seeds can enter the avoiding groove 63 when the pressing shaft 62 is pressed, thereby preventing the seeds from being damaged, and the outer edge of the lower end of each pressing shaft 62 is chamfered, so that the pressing shaft 62 can more easily push the elastic leaf petals 33 to open downward.

[0046] A plurality of spray pipes 7 are arranged in the top of the watering cavity 13 in the box body 1, and each spray pipe 7 is provided with a plurality of irrigation nozzles 71 arranged in a row.

[0047] A conveying frame 8 is arranged on each side of the box body 1, the conveying frame 8 comprises a support table 81 and two lifting frames 82 arranged on the front and rear sides of the support table 81, each lifting frame 82 is open on one side, each lifting frame 82 is connected with a lifting chain 83 arranged in the height direction, the upper and lower ends of each lifting frame 82 are rotatably connected with a lifting sprocket 84 engaged with the corresponding lifting chain 83, the upper end of each lifting frame 82 is provided with a second driving motor 85, the power output shaft of each second driving motor 85 is connected with the corresponding lifting sprocket 84, the two lifting chains 83 are connected with a horizontal loading table 86, the upper end of the horizontal loading table 86 is provided with a third linear motor 87 facing the box body 1, the stator of the third linear motor 87 is connected with a horizontal taking plate 88, the horizontal taking plate 88 moves up and down by the cooperation of the two lifting chains 83, and the horizontal taking plate 88 moves left and right by the third linear motor 87.

[0048] A seedling raising frame 9 is arranged on the side of each conveying frame 8 away from the box body 1, the front and rear inner walls of each seedling raising frame 9 are provided with a support frame 91, the left and right ends of each support frame 91 are provided with a vertical support chain 92, the upper and lower ends of each support frame 91 are rotatably connected with a transmission shaft 93, the two ends of each transmission shaft 93 are provided with a support sprocket 94 engaged with the corresponding support chain 92, each support frame 91 is provided with a third driving motor 95, the power output shaft of each third driving motor 95 is connected with the corresponding support sprocket 94, a plurality of support rods 96 are connected between the two support chains 92 in each support frame 91, the lower part of each seedling raising frame 9 close to the corresponding conveying frame 8 is provided with an output port 97, so as to facilitate the conveying of the seedling raising tray in the seedling raising frame 9 to the conveying frame 8, and each seedling raising frame 9 is provided with an input port 98 on the side away from the corresponding conveying frame 8, so as to facilitate the taking and placing of the seedling raising tray at the input port 98, and a plurality of light supplementing lamps 99 are arranged on the inner wall of each seedling raising frame 9 for plant growth light supplementing.

[0049] Embodiment 2, using a multifunctional seedling raising device of embodiment 1, also provides a tomato seedling raising method, comprising the following steps:

[0050] S1, tray loading, the seedling tray is loaded from the input port 98, and the lower end of the seedling tray is placed on the two support bars 96;

[0051] S2, soil filling, the prepared nutrient soil is added into the soil filling groove 2 from the soil adding channel 21, the third linear motor 87 on the conveying frame 8 drives the horizontal taking plate 88 to extend into the seedling frame 9 from the output port 97, and the horizontal taking plate 88 is driven to rise by the second driving motor 85 to drive the lifting chain 83, so that the seedling tray is lifted, and then the seedling tray is conveyed into the soil filling cavity 11 by the third linear motor 87, the first driving motor 44 drives the roller shaft 43 to rotate, and the first linear motor 4 drives the roller shaft 43 to move back and forth in the soil filling groove 2, so that the nutrient soil falls into the seedling groove of the seedling tray through the soil filling hole 22 by the soil scraping bar 47, and then the horizontal taking plate 88 is used to convey the seedling tray into the seedling frame 9;

[0052] S3, seeding, the prepared tomato seeds are added into the seeding groove 3 from the seed adding channel 31, the seedling tray with the nutrient soil in the seedling frame 9 is conveyed into the seeding cavity 12 by the horizontal taking plate 88, the seed scraping bar 53 is driven to scrape back and forth on the bottom of the seeding groove 3 by the second linear motor 5, so that the seeds fall into the seeding groove 3, the elastic petals 33 are driven to open downward by the extension driving pressing shaft 62 of the telescopic motor 6, so that the seeds fall into the seedling groove of the seedling tray, and then the horizontal taking plate 88 is used to convey the seedling tray into the seedling frame 9;

[0053] S4, watering, after the seeding is completed, the seedling tray in the seedling frame 9 is conveyed into the watering cavity 13 by the horizontal taking plate 88, and watering is performed by the irrigation nozzle 71, so that the soil is moistened and does not drip water, watering is performed once every other day, after the seeds germinate, watering is performed once every 2-3 days, and when the seedlings grow to about the size of half a palm, watering is performed once every day;

[0054] S5, light supplementing, after the seeds germinate, light supplementing is performed by the light supplementing lamp 99 in the seedling frame 9, so that at least 14-16 hours of light is ensured every day;

[0055] S6, transplanting, when the germination time is 20-25 days and the seedlings have 3-4 true leaves, the seedling tray is taken out from the seedling frame 9 from the output port 97, and tomato seedling transplanting is performed.

[0056] The specific embodiments are only an explanation of the present application, and are not a limitation of the present application, and those skilled in the art can make modifications to the embodiments without creative contribution according to the needs after reading the present specification, as long as the modifications are within the scope of the claims of the present application.

Claims

1. A multifunctional seedling raising device, comprising a box (1), characterized in that: The box (1) is provided with a soil filling cavity (11), a sowing cavity (12) and a watering cavity (13) arranged sequentially from bottom to top. The box (1) has an inlet and outlet (14) on the left and right sides of the soil filling cavity (11), the sowing cavity (12) and the watering cavity (13). The box (1) has a soil filling trough (2) with an open top at the upper part of the soil filling cavity (11). The box (1) has a soil adding channel (21) connected to the soil filling trough (2) on the front side. The box (1) has a sowing trough (3) with an open top at the upper part of the sowing cavity (12). The box (1) has a seed adding channel (31) connected to the sowing trough (3) on the front side. The bottom of the filling trough (2) is provided with a plurality of filling holes (22) arranged in an array. A first linear motor (4) is installed at the top of the filling cavity (11) inside the box (1). The moving part of the first linear motor (4) is connected downward to a mounting frame (41) perpendicular to it. The mounting frame (41) is rotatably connected to a roller (43). One end of the mounting frame (41) is equipped with a first drive motor (44) for driving the roller (43) to rotate. The outer periphery of the roller (43) is provided with a plurality of scraping strips (47) that can contact the bottom of the filling trough (2). The bottom of the seeding trough (3) is provided with a plurality of seeding holes (32) corresponding one-to-one with the soil filling holes (22). Each seeding hole (32) is provided with an inoculation groove formed by a plurality of elastic leaf petals (33) downward. A second linear motor (5) is installed above the inoculation groove in the box (1). The mover of the second linear motor (5) is connected downward to a connecting frame (51) perpendicular to it. The connecting frame (51) is provided with a seed scraping strip (53) that contacts the bottom of the seeding trough (3) downward. A telescopic motor (6) is installed downward at the top of the seeding chamber (12) in the box (1). The lower end of the telescopic motor (6) is connected to a pressure plate (61) located above the second linear motor (5). The pressure plate (61) is provided with a plurality of pressure shafts (62) corresponding one-to-one with the seeding holes (32) downward. The box (1) has multiple spray pipes (7) installed at the top of the watering chamber (13), and each spray pipe (7) has multiple irrigation nozzles (71) arranged in a row downwards. A conveyor frame (8) is provided on both the left and right sides of the box (1). The conveyor frame (8) includes a support platform (81) and lifting frames (82) provided upward on the front and rear sides of the support platform (81). Each lifting frame (82) has an opening facing one side. Each lifting frame (82) is connected to a lifting chain (83) arranged along its height direction. One end of each lifting frame (82) is equipped with a second drive motor (85) for driving the corresponding lifting chain (83) to move. The two lifting chains (83) are connected to a horizontal loading platform (86). A third linear motor (87) facing the box (1) is installed at the upper end of the horizontal loading platform (86). The upper end of the mover of the third linear motor (87) is connected to a horizontal picking plate (88). Each conveyor (8) has a seedling rack (9) on the side away from the box (1). Each seedling rack (9) has a support frame (91) on the front and back inner walls. Each support frame (91) has vertically arranged support chains (92) on both the left and right ends. Each support frame (91) is equipped with a third drive motor (95) for driving the support chain (92) to move. Each support frame (91) has multiple equally spaced support bars (96) between the two support chains (92). Each seedling rack (9) has an output port (97) on the lower part of the side close to the corresponding conveyor (8). Each seedling rack (9) has an input port (98) on the side away from the corresponding conveyor (8).

2. The multifunctional seedling raising device according to claim 1, characterized in that: The mounting bracket (41) is provided with a first sliding sleeve (42) at both ends, and the housing (1) is provided with a first sliding shaft (15) that is slidably connected to each first sliding sleeve (42).

3. The multifunctional seedling raising device according to claim 1, characterized in that: One end of the roller (43) is connected to a transmission pulley (45), and the power output shaft of the first drive motor (44) is connected to a drive pulley (46) that cooperates with the transmission pulley (45). The transmission pulley (45) and the drive pulley (46) are driven by a belt.

4. The multifunctional seedling raising device according to claim 1, characterized in that: The connecting frame (51) is provided with a second sliding sleeve (52) at both ends, and the housing (1) is provided with a second sliding shaft (16) that is slidably connected to each second sliding sleeve (52).

5. The multifunctional seedling raising device according to claim 1, characterized in that: The seed scraper (53) is provided with a Y-shaped gathering channel (54) in the direction of the seed addition channel (31).

6. The multifunctional seedling raising device according to claim 1, characterized in that: Each pressure shaft (62) has a seed-avoiding groove (63) at its lower end, and the outer edge of the lower end of each pressure shaft (62) is chamfered.

7. The multifunctional seedling raising device according to claim 1, characterized in that: Each lifting frame (82) has a lifting sprocket (84) rotatably connected to the upper and lower ends of the frame, which meshes with the corresponding lifting chain (83). The power output shaft of each second drive motor (85) is connected to the corresponding lifting sprocket (84).

8. The multifunctional seedling raising device according to claim 1, characterized in that: Each support frame (91) has a drive shaft (93) rotatably connected to both the upper and lower ends. Each drive shaft (93) has a support sprocket (94) at both ends that meshes with the corresponding support chain (92). The power output shaft of each third drive motor (95) is connected to the corresponding support sprocket (94).

9. A multifunctional seedling raising device according to claim 1, characterized in that: Each seedling rack (9) is equipped with a supplemental light (99) on its inner wall.

10. A method for raising tomato seedlings, using a multifunctional seedling raising device according to any one of claims 1-9, characterized in that, Includes the following steps: S1. Placing the seedling tray: Place the seedling tray into the inlet (98) so that the lower end of the seedling tray rests on the two support bars (96); S2. Filling: The prepared nutrient soil is added into the filling trough (2) through the soil adding channel (21). The third linear motor (87) on the conveyor frame (8) drives the horizontal picking plate (88) to extend into the seedling rack (9) from the output port (97). The second drive motor (85) drives the lifting chain (83) to lift the horizontal picking plate (88) to raise the seedling tray. Then, the third linear motor (87) transports the seedling tray into the filling cavity (11). The first drive motor (44) drives the roller (43) to rotate. The first linear motor (4) drives the roller (43) to move back and forth in the filling trough (2). The scraper (47) makes the nutrient soil fall into the seedling trough of the seedling tray through the filling hole (22). After completion, it is transported to the seedling rack (9) through the horizontal picking plate (88). S3. Sowing: The prepared tomato seeds are added into the sowing trough (3) through the seeding channel (31). The seedling tray containing nutrient soil in the seedling rack (9) is then transported to the sowing chamber (12) through the horizontal picking plate (88). The seed scraper (53) is driven by the second linear motor (5) to scrape back and forth at the bottom of the sowing trough (3) so that the seeds fall into the sowing trough (3). The pressure shaft (62) is extended by the telescopic motor (6) and moved down, pushing the elastic leaf (33) to open downward so that the seeds fall into the seedling trough of the seedling tray, thus completing the sowing. The seeds are then transported to the seedling rack (9) through the horizontal picking plate (88). S4. Watering: After sowing, the seedling tray in the seedling rack (9) is transported to the watering chamber (13) through the horizontal picking plate (88). Water is applied through the irrigation nozzle (71) to keep the soil moist but not dripping. Watering is done once every other day. After the seeds germinate, watering is done once every 2-3 days. When the seedlings grow to the size of half a palm, watering is done once every other day. S5. Supplemental lighting: After the seeds germinate, supplemental lighting should be provided to ensure at least 14-16 hours of light per day. S6. Transplanting: When the seedlings have sprouted for 20-25 days and have 3 to 4 true leaves, remove the seedling tray from the seedling rack (9) through the output port (97) and transplant the tomato seedlings.

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