Breeding frame for rice seed breeding

Abstract

The invention relates to the technical field of rice seed breeding, in particular to a breeding frame for rice seed breeding, which comprises a base, a three-dimensional frame is fixedly connected to the top end of the base, two groups of breeding boxes are arranged on the inner side of the three-dimensional frame, and a layer changing assembly is arranged on the inner side of the three-dimensional frame and corresponds to the breeding boxes and is used in cooperation with a soil loosening and fertilizing assembly. The two breeding boxes are driven to move to the outer side of the three-dimensional frame through the movable screw rod, and then a second servo motor is started, so that the second servo motor drives the breeding box located in the middle of the three-dimensional frame to move upwards through a conversion rack, and meanwhile, the breeding box located at the top of the three-dimensional frame is driven to move downwards through the conversion rack; the breeding box at a high position can be conveniently moved to the middle part, a worker can conveniently carry out experimental observation on rice seedlings planted in the breeding box, through a staggered adjustment mode of the two breeding boxes, the germinated rice seedlings in the breeding box are prevented from being extruded, and the survival rate of the rice seedlings is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of rice seed breeding, in particular to a breeding frame for rice seed breeding. Background Art

[0002] Rice breeding is the process of cultivating new varieties with high yield, disease resistance and high quality characteristics by hybridizing the genetic advantages of parent rice seeds. Indoor breeding is usually carried out using duplex three-dimensional breeding racks, which increase the operating space for indoor breeding.

[0003] The existing breeding method is to coordinate field trials with indoor identification. When conducting breeding identification indoors, due to environmental limitations, breeding racks are usually used to breed rice seeds. However, the existing breeding racks are usually high and low racks with fixed layered intervals. Therefore, when conducting seedling experiments on seeds in the three-dimensional racks, it is inconvenient for workers to loosen the soil and fertilize the seeds at higher places, and it also affects the observation experiments of seedlings at higher places by workers who are short of height.

[0004] Based on this, the present invention discloses a breeding frame for rice seed breeding. Summary of the Invention

[0005] In order to solve the problem proposed in the background technology that the existing breeding method is to cooperate with field experiments and indoor identification, when conducting breeding identification indoors, due to environmental limitations, breeding racks are usually used to breed rice seeds. However, the existing breeding racks are usually in the shape of high and low racks with fixed layer intervals. Therefore, when conducting seedling experiments on seeds in the three-dimensional rack, it will be inconvenient for staff to loosen the soil and fertilize the seeds at higher places, and it will affect the observation experiments of staff with height disabilities on the seedlings at higher places. The present invention provides a breeding rack for rice seed breeding, comprising a base, characterized in that: the top of the base is fixedly connected to the three-dimensional rack, two groups of breeding boxes are arranged on the inner side of the three-dimensional rack, and a layer changing assembly is arranged on the inner side of the three-dimensional rack and at a position corresponding to the breeding box, the layer changing assembly is used to adjust the breeding box for use, the layer changing assembly is used to drive the two breeding boxes to switch positions, and a soil loosening and fertilizing assembly is arranged at the middle position of the three-dimensional rack, and the layer changing assembly is used in conjunction with the soil loosening and fertilizing assembly.

[0006] Preferably, the layer-changing assembly includes a conversion rack, a conversion gear and a support seat. The inner sides of the four support rods of the three-dimensional frame are slidably connected with conversion racks. The conversion rack located at one end of the breeding box is located at the bottom end of the three-dimensional frame, and the conversion rack located at the other end of the breeding box is located at the top end of the three-dimensional frame. Conversion gears are provided at the center positions of the inner sides of the four support rods. The conversion gears are meshed with the corresponding support seats. The top of the conversion rack is fixedly connected with the support seat, and the support seat is slidably connected to the three-dimensional frame.

[0007] Preferably, the layer-changing assembly further includes a connecting frame, an I-shaped support bar, a movable frame and a movable screw. The connecting frame is fixedly connected between the corresponding two support seats, the inner sides of both sides of the connecting frame are slidably connected with I-shaped support bars, the top of the I-shaped support bar is fixedly connected to the breeding box, and the two ends of the bottom end of the center position of the breeding box are fixedly connected with the movable frame, and the movable screw is rotatably connected between the two movable frames.

[0008] Preferably, the layer-changing assembly also includes a threaded sleeve, a first transverse bevel gear, a second transverse bevel gear and a first servo motor, a threaded sleeve is threadedly connected to the outside of the moving screw and at a position corresponding to the connecting frame, the threaded sleeve is rotatably connected to the connecting frame, the outside of the threaded sleeve is fixedly connected to the first transverse bevel gear, the inside of the connecting frame and at a position corresponding to the threaded sleeve is rotatably connected to the second transverse bevel gear, the second transverse bevel gear is meshed with the first transverse bevel gear, the inside of the connecting frame and at a position corresponding to the second transverse bevel gear is fixedly connected to the first servo motor, and the output end of the first servo motor is fixedly connected to the second transverse bevel gear.

[0009] Preferably, the layer-changing assembly further includes a linkage column, a first linkage bevel gear, a second linkage bevel gear and a second servo motor, both sides of the three-dimensional frame are fixedly connected to the linkage frame, both sides of the top end of the linkage frame are rotatably connected to the linkage columns, the end of the linkage column located inside the linkage frame is fixedly connected to the first linkage bevel gear, the end of the linkage column away from the first linkage bevel gear is fixedly connected to the corresponding conversion gear, the interior of the linkage frame and the position corresponding to the linkage column are rotatably connected to the second linkage bevel gear, the second linkage bevel gear is meshed with the first linkage bevel gear, the interior of the linkage frame and the position corresponding to the second linkage bevel gear are fixedly connected to the second servo motor, and the output end of the second servo motor is fixedly connected to the second linkage bevel gear.

[0010] Preferably, both ends of the middle portion and both ends of the top portion of the three-dimensional frame are fixedly connected with L-shaped support bars, and the top ends of the L-shaped support bars are fitted with the I-shaped support bars.

[0011] Preferably, the soil loosening and fertilizing assembly includes a fertilizer box, a fertilizer column, a soil loosening frame and a soil loosening scraper. The fertilizer box is arranged on the inner side of the breeding box in the middle of the three-dimensional frame. The bottom end of one end of the fertilizer box is fixedly connected to the fertilizer column, the bottom end of the fertilizer column is fixedly connected to multiple soil loosening frames, and the bottom end of the soil loosening frame is rotatably connected to the soil loosening scraper.

[0012] Preferably, the soil loosening and fertilizing assembly also includes a fertilizer discharge port, a closing cover, an arc-shaped rebound frame, a closing return spring and a top-opening piece. The bottom end of the fertilizer box away from one end of the fertilizer column is fixedly connected to the fertilizer discharge port, the inner side of the fertilizer discharge port is slidably connected to the closing cover, the end of the closing cover close to the fertilizer column is fixedly connected to the arc-shaped rebound frame, the top of the arc-shaped rebound frame is fixedly connected to a plurality of closing return springs, the end of the closing return spring away from the closing cover is fixedly connected to the fertilizer column, and the outer side of the soil loosening scraper is fixedly connected to a plurality of top-opening pieces.

[0013] Preferably, the soil loosening and fertilizing assembly also includes an adjusting seat, an adjusting column, a moving rod and a connecting rod. The adjusting seat is fixedly connected to the center position of the top of the fertilizing box, the inner side of the adjusting seat is rotatably connected to the adjusting column, one side of the adjusting seat is plugged into a pin at a position corresponding to the adjusting column, the top of the adjusting column is fixedly connected to the connecting rod, and the moving rods are slidably connected to both sides of the connecting rod, and the end of the moving rod is fixedly connected to the three-dimensional frame.

[0014] Preferably, the end of the connecting rod is threadedly connected with a positioning bolt.

[0015] 1. In the breeding rack for rice seed breeding, the structural coordination design of the conversion rack and the movable screw is adopted. After the staff collects experimental data on the rice seeds in the breeding box located in the middle of the three-dimensional frame, the first servo motor is started, so that the first servo motor drives the two breeding boxes to move to the outside of the three-dimensional frame through the movable screw, and then the second servo motor is started, so that the second servo motor drives the breeding box located in the middle of the three-dimensional frame to move upward through the conversion rack, and at the same time drives the breeding box located at the top of the three-dimensional frame to move downward through the conversion rack, thereby facilitating the movement of the breeding box located at a high place to the middle, making it convenient for the staff to conduct experimental observations on the rice seedlings planted therein, and through the staggered adjustment method of the two breeding boxes, squeezing of the germinated rice seedlings in the breeding boxes is avoided, thereby improving the survival rate of the rice seedlings.

[0016] 2. In the breeding rack for rice seed breeding, the structural coordination design of the fertilizer box and the loosening scraper is adopted. When the breeding box located at a high position is moved to the middle position of the three-dimensional frame, the position of the fertilizer box is adjusted so that the loosening scraper on the fertilizer box is aligned with the fertilizer groove on the breeding box, thereby driving the breeding box to move. The movement of the breeding box drives the loosening scraper to contact the soil in the breeding box, and then the loosening scraper that rotates in contact with the soil is used to loosen the soil next to the seedlings and fertilize them, which facilitates the alignment and loosening of the soil and fertilization during the position conversion of the breeding box, reduces the operating steps of the staff, and reduces the limitations of the device when in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a structural schematic diagram of the breeding box of the present invention; Figure 3 It is a structural schematic diagram of the conversion rack of the present invention; Figure 4 It is a structural schematic diagram of the movable frame and movable screw of the present invention; Figure 5 It is a structural schematic diagram of the linkage frame and linkage column of the present invention; Figure 6 This is a schematic structural diagram of the breeding box and I-shaped support bar of the present invention; Figure 7 This is a schematic structural diagram of the soil loosening scraper of the present invention; Figure 8 It is a structural diagram of the fertilizer box of the present invention; Figure 9 This is a schematic diagram of the fertilizer discharge port and the closing cover of the present invention; Figure 10 It is a schematic diagram of the interior of the fertilizer feeding port of the present invention.

[0018] The meaning of each number in the figure is: 1. Base; 2. Stereoscopic frame; 3. Seed box; 4. Conversion rack; 5. Conversion gear; 6. Support base; 7. Connecting frame; 8. I-shaped support bar; 9. Moving frame; 10. Moving screw; 11. Threaded sleeve; 12. First transverse bevel gear; 13. Second transverse bevel gear; 14. First servo motor; 15. Linkage frame; 16. Linkage column; 17. First linkage bevel gear; 18. Second linkage bevel gear; 19. Second servo motor; 20. L-shaped support bar; 21. Fertilizer box; 22. Fertilizer column; 23. Loosening rack; 24. Loosening scraper; 25. Fertilizer discharge port; 26. Closing cover; 27. Arc rebound rack; 28. Closing return spring; 29. Top opening piece; 30. Adjustment seat; 31. Adjustment column; 32. Moving rod; 33. Connecting rod; 34. Positioning bolt; 101. Conversion assembly; 202. Loosening and fertilizing assembly. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] For this purpose, the present invention provides a breeding frame for rice seed breeding, see Figures 1-10As shown, it includes a base 1, the top of the base 1 is fixedly connected to a three-dimensional frame 2, two groups of breeding boxes 3 are arranged on the inner side of the three-dimensional frame 2, and a layer changing component 101 is arranged on the inner side of the three-dimensional frame 2 and at a position corresponding to the breeding boxes 3. The layer changing component 101 is used to adjust the breeding boxes 3 and drive the two breeding boxes 3 to switch positions. A soil loosening and fertilizing component 202 is arranged in the middle of the three-dimensional frame 2, and the layer changing component 101 is used in conjunction with the soil loosening and fertilizing component 202.

[0021] Example 1 like Figures 1-10 As shown, the layer changing assembly 101 includes a conversion rack 4, a conversion gear 5 and a support seat 6. The inner sides of the four support rods of the three-dimensional frame 2 are slidably connected with a conversion rack 4. The conversion rack 4 located at one end of the breeding box 3 is located at the bottom end of the three-dimensional frame 2, and the conversion rack 4 located at the other end of the breeding box 3 is located at the top of the three-dimensional frame 2. In order to facilitate the movement of the conversion rack 4 in the three-dimensional frame 2, a conversion gear 5 is provided at the center position of the inner side of the four support rods. The conversion gear 5 is meshed with the corresponding support seat 6, and the top of the conversion rack 4 is fixedly connected with the support seat 6. The support seat 6 is slidably connected to the three-dimensional frame 2, thereby facilitating the corresponding breeding box 3 to move upward through the conversion rack 4 located at the lower part of the three-dimensional frame 2, and at the same time, facilitating the corresponding breeding box 3 to move downward through the conversion rack 4 located at the upper part of the three-dimensional frame 2.

[0022] In order to facilitate the horizontal movement of the breeding box 3 in the three-dimensional frame 2, the layer changing component 101 also includes a connecting frame 7, an I-shaped support bar 8, a movable frame 9 and a movable screw 10. The corresponding two support seats 6 are fixedly connected with a connecting frame 7, and the inner sides of both sides of the connecting frame 7 are slidably connected with I-shaped support bars 8. The top of the I-shaped support bar 8 is fixedly connected to the breeding box 3, and the two ends of the bottom end of the center position of the breeding box 3 are fixedly connected with a movable frame 9. The two movable frames 9 are rotatably connected with a movable screw 10, which facilitates the subsequent driving of the movable screw 10 to drive the breeding box 3 to move on the connecting frame 7 through the I-shaped support bar 8.

[0023] The layer-changing assembly 101 also includes a threaded sleeve 11, a first transverse bevel gear 12, a second transverse bevel gear 13 and a first servo motor 14. The outer side of the movable screw 10 is threadedly connected to the threaded sleeve 11 at a position corresponding to the connecting frame 7. In order to facilitate the rotation of the threaded sleeve 11, the threaded sleeve 11 is rotatably connected to the connecting frame 7. The outer side of the threaded sleeve 11 is fixedly connected to the first transverse bevel gear 12. In order to facilitate the rotation of the threaded sleeve 11 and the first transverse bevel gear 12, the inner side of the connecting frame 7 is fixedly connected to the first transverse bevel gear 12. The threaded sleeve 11 is rotatably connected to the second transverse bevel gear 13 at the corresponding position, and the second transverse bevel gear 13 is meshed with the first transverse bevel gear 12. A first servo motor 14 is fixedly connected to the interior of the connecting frame 7 and at the corresponding position of the second transverse bevel gear 13. The output end of the first servo motor 14 is fixedly connected to the second transverse bevel gear 13, and then the threaded sleeve 11 is driven to rotate in the connecting frame 7 through the second transverse bevel gear 13, thereby driving the moving screw 10 to drive the breeding box 3 to move.

[0024] In order to facilitate the simultaneous movement of the two breeding boxes 3, the layer-changing component 101 also includes a linkage column 16, a first linkage bevel gear 17, a second linkage bevel gear 18 and a second servo motor 19. Both sides of the three-dimensional frame 2 are fixedly connected to the linkage frame 15, and both sides of the top of the linkage frame 15 are rotatably connected to the linkage column 16. The end of the linkage column 16 located inside the linkage frame 15 is fixedly connected to the first linkage bevel gear 17. In order to facilitate the rotation of the linkage column 16, the end of the linkage column 16 away from the first linkage bevel gear 17 is fixedly connected to the corresponding conversion gear 5, and the interior of the linkage frame 15 and the position corresponding to the linkage column 16 are rotatably connected to the first linkage bevel gear 17. Second linkage bevel gear 18, the second linkage bevel gear 18 is meshed with the first linkage bevel gear 17, and a second servo motor 19 is fixedly connected to the interior of the linkage frame 15 and at a position corresponding to the second linkage bevel gear 18. The output end of the second servo motor 19 is fixedly connected to the second linkage bevel gear 18. Due to the arrangement of the two first linkage bevel gears 17, when the second servo motor 19 drives the second linkage bevel gear 18 to rotate, the first linkage bevel gear 17 located on the left side of the second linkage bevel gear 18 rotates counterclockwise, and the first linkage bevel gear 17 located on the right side of the second linkage bevel gear 18 rotates counterclockwise.

[0025] In order to facilitate the support of the breeding box 3 and prevent the breeding box 3 from bending due to material problems, the two ends of the middle part and the two ends of the top of the three-dimensional frame 2 are fixedly connected with L-shaped support bars 20, and the top of the L-shaped support bar 20 is in contact with the I-shaped support bar 8.

[0026] During operation, after the staff collects experimental data for the breeding box 3 located in the middle of the three-dimensional frame 2, the staff starts the first servo motor 14, and then the first servo motors 14 located at the top and middle of the three-dimensional frame 2 are started at the same time. The first servo motor 14 located in the middle of the three-dimensional frame 2 rotates clockwise, and the first servo motor 14 located at the top of the three-dimensional frame 2 reverses counterclockwise. The started first servo motor 14 drives the second transverse bevel gear 13 to rotate through its output end, and then the second transverse bevel gear 13 drives the threaded sleeve 11 to rotate through the first transverse bevel gear 12. Through the rotation of the threaded sleeve 11, the moving screw 10 located therein drives the breeding box 3 fixed thereto to move laterally through the I-shaped support bar 8. Through the forward and reverse rotation of different first servo motors 14, the breeding box 3 located in the middle of the three-dimensional frame 2 and the breeding box 3 located at the top of the three-dimensional frame 2 are relatively moved, so that they are moved to the position outside the three-dimensional frame 2. Through the staggered adjustment method of the two breeding boxes, the squeezing of the germinated rice seedlings in the breeding boxes is avoided, and the survival rate of the rice seedlings is improved.

[0027] When the position adjustment of the two breeding boxes 3 is completed, the two second servo motors 19 are started at the same time, and the output end of the second servo motor 19 drives the second linkage bevel gear 18 to rotate, so that the second linkage bevel gear 18 drives the two first linkage bevel gears 17 to rotate, so that the first linkage bevel gear 17 on the left rotates counterclockwise, which drives the corresponding conversion gear 5 to rotate through the linkage column 16, and then drives the breeding box 3 located in the middle of the three-dimensional frame 2 to move upward through the conversion rack 4 through the conversion gear 5. At the same time, the first linkage bevel gear 17 on the right side rotates counterclockwise through the second linkage bevel gear 18, which drives the corresponding conversion gear 5 to rotate through the linkage column 16, and then drives the breeding box 3 located at the top of the three-dimensional frame 2 to move downward through the conversion rack 4 through the corresponding conversion gear 5.

[0028] Example 2 like Figures 1-10 As shown, in order to facilitate the loosening and fertilizing of rice seeds in the breeding box 3 located in the middle of the three-dimensional frame 2, the loosening and fertilizing assembly 202 includes a fertilizer box 21, a fertilizer column 22, a loosening frame 23 and a loosening scraper 24. The fertilizer box 21 is provided on the inner side of the breeding box 3 located in the middle of the three-dimensional frame 2, so that the compound fertilizer to be used can be conveniently placed through the fertilizer box 21. The bottom end of one end of the fertilizer box 21 is fixedly connected to the fertilizer column 22, and the bottom end of the fertilizer column 22 is fixedly connected to multiple loosening frames 23. The bottom end of the loosening frame 23 is rotatably connected to the loosening scraper 24. A fertilizer trough is provided at one end of the breeding box 3 and at a position corresponding to the loosening scraper 24. The soil layer in the breeding box 3 is higher than the fertilizer trough, so that the loosening scraper 24 is driven to rotate by the soil above the fertilizer trough.

[0029] The soil loosening and fertilizing assembly 202 also includes a fertilizer discharge port 25, a closing cover 26, an arc-shaped rebound frame 27, a closing reset spring 28 and a top opening piece 29. In order to facilitate fertilizing the loose soil layer, the bottom end of the fertilizer box 21 away from one end of the fertilizer column 22 is fixedly connected with the fertilizer discharge port 25, and the inner side of the fertilizer discharge port 25 is slidingly connected with the closing cover 26. The end of the closing cover 26 close to the fertilizer column 22 is fixedly connected with the arc-shaped rebound frame 27. In order to facilitate the automatic reset of the opening of the closing cover 26, the top of the arc-shaped rebound frame 27 is fixedly connected with multiple closing reset springs 28. The end of the closing reset spring 28 away from the closing cover 26 is fixedly connected to the fertilizing column 22, and the outer side of the soil loosening scraper 24 is fixedly connected with multiple top opening pieces 29.

[0030] In order to adjust the working position of the soil loosening and fertilizing component 202 according to different breeding boxes 3, the soil loosening and fertilizing component 202 also includes an adjusting seat 30, an adjusting column 31, a moving rod 32 and a connecting rod 33. The adjusting seat 30 is fixedly connected to the center position of the top of the fertilizing box 21. In order to facilitate the rotation of the fertilizing box 21, the inner side of the adjusting seat 30 is rotatably connected to the adjusting column 31. A pin is plugged into one side of the adjusting seat 30 and the corresponding position of the adjusting column 31. The top of the adjusting column 31 is fixedly connected to the connecting rod 33. The moving rod 32 is slidably connected to both sides of the connecting rod 33. The end of the moving rod 32 is fixedly connected to the three-dimensional frame 2.

[0031] During operation, after the breeding box 3 located above the three-dimensional frame 2 is adjusted to the middle position of the three-dimensional frame 2, the fertilizer box 21 is rotated one hundred and eighty degrees by pulling out the pin on the adjustment seat 30, and then the pin is reset, and then the limit on the connecting rod 33 is released by rotating the positioning bolt 34. After the fertilizer box 21 is moved to the opposite position through the connecting rod 33, the positioning bolt 34 is reset to position the moved fertilizer box 21.

[0032] Then, by operating the breeding box 3 in the reverse direction to move horizontally, the two breeding boxes 3 are moved relative to each other, and when the breeding box 3 located in the middle of the three-dimensional frame 2 moves, the loosening scraper 24 moves into the breeding box 3 through the fertilizer trough thereon, and then the loosening scraper 24 contacts the soil in the breeding box 3, so that the loosening scraper 24 drives the loosening scraper 24 to rotate on the loosening frame 23 during the contact with the soil, and then the soil is loosened while it rotates, and when the loosening scraper 24 rotates, the top opening piece 29 thereon contacts the soil. The arc-shaped rebound frame 27 interferes with the fertilizing discharge port 25, and then the arc-shaped rebound frame 27 drives the closing cover 26 to move on the fertilizing discharge port 25. When the top opening piece 29 interferes with the arc-shaped rebound frame 27, the closing cover 26 is started to release the closed state of the fertilizing discharge port 25, so that the compound fertilizer in the fertilizer box 21 falls onto the loosened soil through the fertilizer discharge port 25, and then fertilizes it. The position of the loosening scraper 24 is set on one side of the root of the seedling, so it will not damage the root of the seedling when loosening the soil.

[0033] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0034] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A breeding rack for rice seed breeding, comprising a base (1), characterized in that: The top of the base (1) is fixedly connected to a three-dimensional frame (2), two groups of breeding boxes (3) are arranged on the inner side of the three-dimensional frame (2), and a layer changing component (101) is arranged on the inner side of the three-dimensional frame (2) and at a position corresponding to the breeding boxes (3). The layer changing component (101) is used to adjust the breeding boxes (3) and drive the two breeding boxes (3) to switch positions. A soil loosening and fertilizing component (202) is arranged at a position in the middle of the three-dimensional frame (2), and the layer changing component (101) is used in conjunction with the soil loosening and fertilizing component (202).

2. The rice seed breeding rack according to claim 1, characterized in that: The layer changing assembly (101) comprises a conversion rack (4), a conversion gear (5) and a support seat (6); the inner sides of the four support rods of the three-dimensional frame (2) are all slidably connected with the conversion rack (4); the conversion rack (4) located at one end of the breeding box (3) is located at the bottom end of the three-dimensional frame (2); the conversion rack (4) located at the other end of the breeding box (3) is located at the top end of the three-dimensional frame (2); the center position of the inner sides of the four support rods is provided with a conversion gear (5); the conversion gear (5) is meshed with the corresponding support seat (6); the top of the conversion rack (4) is fixedly connected with the support seat (6); the support seat (6) is slidably connected to the three-dimensional frame (2).

3. The rice seed breeding rack according to claim 2, characterized in that: The layer-changing assembly (101) further comprises a connecting frame (7), an I-shaped support bar (8), a movable frame (9) and a movable screw (10), wherein the connecting frame (7) is fixedly connected between the corresponding two support seats (6), the inner sides of both sides of the connecting frame (7) are slidably connected with the I-shaped support bar (8), the top end of the I-shaped support bar (8) is fixedly connected to the breeding box (3), the two ends of the bottom end of the center position of the breeding box (3) are fixedly connected with the movable frame (9), and the movable screw (10) is rotatably connected between the two movable frames (9).

4. The rice seed breeding rack according to claim 3, characterized in that: The layer-changing assembly (101) further includes a threaded sleeve (11), a first transverse bevel gear (12), a second transverse bevel gear (13) and a first servo motor (14); the outer side of the movable screw (10) and the position corresponding to the connecting frame (7) are threadedly connected with the threaded sleeve (11); the threaded sleeve (11) is rotatably connected to the connecting frame (7); the outer side of the threaded sleeve (11) is fixedly connected with the first transverse bevel gear (12); the interior of the connecting frame (7) and the position corresponding to the threaded sleeve (11) are rotatably connected with the second transverse bevel gear (13); the second transverse bevel gear (13) is meshed with the first transverse bevel gear (12); the interior of the connecting frame (7) and the position corresponding to the second transverse bevel gear (13) are fixedly connected with the first servo motor (14); the output end of the first servo motor (14) is fixedly connected to the second transverse bevel gear (13).

5. The rice seed breeding rack according to claim 4, characterized in that: The layer-changing assembly (101) further comprises a linkage column (16), a first linkage bevel gear (17), a second linkage bevel gear (18) and a second servo motor (19). Both sides of the three-dimensional frame (2) are fixedly connected to the linkage frame (15). Both sides of the top of the linkage frame (15) are rotatably connected to the linkage column (16). The end of the linkage column (16) located inside the linkage frame (15) is fixedly connected to the first linkage bevel gear (17). The end of the linkage column (16) away from the first linkage bevel gear (17) is fixedly connected to the corresponding conversion gear (5). The second linkage bevel gear (18) is rotatably connected to the inside of the linkage frame (15) and at a position corresponding to the linkage column (16). The second linkage bevel gear (18) is meshed with the first linkage bevel gear (17). The second servo motor (19) is fixedly connected to the inside of the linkage frame (15) and at a position corresponding to the second linkage bevel gear (18). The output end of the second servo motor (19) is fixedly connected to the second linkage bevel gear (18).

6. The rice seed breeding rack according to claim 3, characterized in that: Both ends of the middle portion and both ends of the top portion of the three-dimensional frame (2) are fixedly connected with L-shaped support bars (20), and the top ends of the L-shaped support bars (20) are in contact with the I-shaped support bars (8).

7. The rice seed breeding rack according to claim 1, characterized in that: The soil loosening and fertilizing assembly (202) comprises a fertilizer box (21), a fertilizer column (22), a soil loosening frame (23) and a soil loosening scraper (24). The fertilizer box (21) is provided on the inner side of the breeding box (3) in the middle of the three-dimensional frame (2). The bottom end of one end of the fertilizer box (21) is fixedly connected to the fertilizer column (22). The bottom end of the fertilizer column (22) is fixedly connected to a plurality of soil loosening frames (23). The bottom end of the soil loosening frame (23) is rotatably connected to the soil loosening scraper (24).

8. The rice seed breeding rack according to claim 7, characterized in that: The soil loosening and fertilizing assembly (202) further comprises a fertilizer discharge port (25), a closing cover plate (26), an arc-shaped rebound frame (27), a closing return spring (28) and a top opening piece (29); the bottom end of the fertilizer box (21) away from the fertilizer column (22) is fixedly connected to the fertilizer discharge port (25); the inner side of the fertilizer discharge port (25) is slidably connected to the closing cover plate (26); the end of the closing cover plate (26) close to the fertilizer column (22) is fixedly connected to the arc-shaped rebound frame (27); the top end of the arc-shaped rebound frame (27) is fixedly connected to a plurality of closing return springs (28); the end of the closing return spring (28) away from the closing cover plate (26) is fixedly connected to the fertilizer column (22); and the outer side of the soil loosening scraper (24) is fixedly connected to a plurality of top opening pieces (29).

9. The rice seed breeding rack according to claim 7, characterized in that: The soil loosening and fertilizing assembly (202) further comprises an adjusting seat (30), an adjusting column (31), a moving rod (32) and a connecting rod (33); the adjusting seat (30) is fixedly connected to the center position of the top of the fertilizing box (21); the adjusting column (31) is rotatably connected to the inner side of the adjusting seat (30); a latch is plugged and connected to a position corresponding to the adjusting column (31) on one side of the adjusting seat (30); the top of the adjusting column (31) is fixedly connected to the connecting rod (33); the moving rod (32) is slidably connected to both sides of the connecting rod (33); and the end of the moving rod (32) is fixedly connected to the three-dimensional frame (2).

10. The rice seed breeding rack according to claim 9, characterized in that: The end of the connecting rod (33) is threadedly connected with a positioning bolt (34).

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