Agricultural seedling raising device

Abstract

The utility model relates to an agronomy seedling raising device, including support, seedling raising plate, threaded sleeve, screw rod and locking mechanism, a plurality of seedling raising plate, a plurality of threaded sleeve, screw rod and locking mechanism, the plurality of seedling raising plates are arranged along the vertical direction at intervals, the seedling raising plates can be arranged on the support in a vertical sliding mode, the plurality of threaded sleeve are rotatablely connected with the plurality of seedling raising plates in a one-to-one correspondence mode, and the threaded rod is fixed on the support. A plurality of threaded sleeves are arranged on the support, the threaded rod is rotatably connected to the support, the threaded rod is screwed in the threaded sleeves, the locking mechanisms correspond to the threaded sleeves one to one, and the locking mechanisms are used for locking the threaded sleeves to the corresponding seedling raising plates. According to the agricultural seedling raising device, the height of each seedling raising plate can be independently adjusted, then the distance between every two adjacent seedling raising plates can be adjusted, the distance between every two adjacent seedling raising plates can be adjusted according to the growth length of seedlings, and in the growth process of the seedlings, the seedling raising efficiency is improved. The possibility that upward growth of the seedlings is blocked by the seedling raising plates on the upper sides of the seedlings can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of agronomy seedling cultivation, in particular to an agronomy seedling cultivation device. Background Art

[0002] Agronomic experiment is one of the compulsory subjects in agronomy major. Students of agronomy major cultivate seedlings through agronomic experiments, record the growth of seedlings during the cultivation process, and then find out the best method of cultivating seedlings through various experimental comparisons. In the process of cultivating seedlings in agronomic experiments, in order to facilitate the experimenters to observe the growth of seedlings in time, the seedlings need to be placed in a seedling raising device for cultivation.

[0003] The existing seedling raising device generally includes a bracket and a plurality of seedling raising boards fixed on the bracket, wherein the plurality of seedling raising boards are arranged at intervals in the vertical direction and the seedling raising boards are fixedly connected to the bracket. When the existing seedling raising device is used, the seedlings are placed and cultivated on each seedling raising board, but in the existing seedling raising device, the distance between each two adjacent seedling raising boards cannot be adjusted, and the distance between each two adjacent seedling raising boards cannot be adjusted according to the growth length of the seedlings. When the growth length of the seedlings is too long, the seedling raising boards on the upper side of the seedlings will block the upward growth of the seedlings. Utility Model Content

[0004] In view of this, the purpose of the utility model is to provide an agricultural seedling raising device to solve the problem that when the seedlings grow too long when using the existing seedling raising device for raising seedlings, the seedling raising plates on the upper side of the seedlings will block the upward growth of the seedlings.

[0005] The utility model is realized by the following technical solutions:

[0006] An agricultural seedling raising device comprises a bracket, a seedling raising plate, a threaded sleeve, a screw and a locking mechanism. The number of the seedling raising plates is multiple, and the multiple seedling raising plates are arranged at intervals in the up and down directions. The seedling raising plates can be slid up and down on the bracket. The number of the threaded sleeves is multiple, and the multiple threaded sleeves can be rotatably connected to the multiple seedling raising plates one by one. The screw can be rotatably connected to the bracket, and the screw is screwed into the multiple threaded sleeves. The number of the locking mechanisms is multiple, and the multiple locking mechanisms correspond to the multiple threaded sleeves one by one. The locking mechanism is used to lock the threaded sleeves to the corresponding seedling raising plates.

[0007] It is further defined that each of the seedling raising plates is formed with a circular through hole; it also includes a plurality of first limiting rings and a plurality of second limiting rings, the plurality of first limiting rings correspond one-to-one to the plurality of through holes, the first limiting rings are formed by protruding inward from the upper end of the inner circumference of the corresponding through hole, the plurality of second limiting rings correspond one-to-one to the plurality of through holes, the second limiting rings are formed by protruding inward from the lower end of the inner circumference of the corresponding through hole, the plurality of threaded sleeves are correspondingly located in the plurality of through holes, the threaded sleeves are adapted to the corresponding through holes, and the upper and lower side surfaces of the threaded sleeves respectively abut against the corresponding first limiting rings and the corresponding second limiting rings.

[0008] It is further defined that a locking hole is formed on the first limiting ring along the up and down directions, and a locking groove is formed by being recessed downward at the upper side surface of the threaded sleeve corresponding to the position of the locking hole; the locking mechanism includes a locking rod, which is located in the locking hole, the locking rod cooperates with the locking hole, and the lower end of the locking rod is inserted into the locking groove.

[0009] It is further defined that the locking groove is arc-shaped, and the length of the locking groove is greater than the diameter of the locking rod.

[0010] It is further defined that a locking screw hole is formed on the first limiting ring, and the locking screw hole passes through the upper and lower side surfaces of the first limiting ring; the locking mechanism includes a locking bolt, and the locking bolt is screwed into the locking screw hole, and the screwed-in end of the locking bolt is used to resist the threaded sleeve.

[0011] It is further defined that the bracket includes a base plate, a first vertical plate and a second vertical plate, the first vertical plate and the second vertical plate are parallel to each other, the lower ends of the first vertical plate and the second vertical plate are fixedly connected to the base plate, the seedling raising plate is located between the first vertical plate and the second vertical plate, and the two ends of the seedling raising plate can be slidably connected to the two first vertical plates and the second vertical plates up and down respectively; the screw can be rotatably connected to the base plate.

[0012] It is further defined that a first strip hole is vertically arranged on the upper edge of the first vertical plate, and a second strip hole is vertically arranged on the upper edge of the second vertical plate; a first slider and a second slider are respectively fixed at both ends of the seedling raising plate, the first slider is slidably fitted in the first strip hole, and the second slider is slidably fitted in the second strip hole.

[0013] It is further defined that the side surface of each first sliding block facing away from the seedling raising board is recessed inward to form a first fixing screw hole, a first fixing bolt is screwed into each of the first fixing screw holes, and a bolt head of the first fixing bolt is used to abut the side surface of the first vertical plate facing away from the seedling raising board; the side surface of each second sliding block facing away from the seedling raising board is recessed inward to form a second fixing screw hole, a second fixing bolt is screwed into each of the second fixing screw holes, and the bolt head of the second fixing bolt is used to abut the side surface of the second vertical plate facing away from the seedling raising board.

[0014] It is further defined that the bracket also includes a top plate, the two ends of the top plate are respectively fixedly connected to the upper ends of the first vertical plate and the second vertical plate, and a rotating hole is formed on the top plate and penetrates the top plate along the up and down directions; and also includes a motor, which is fixed on the top plate, and the output shaft of the motor passes downward through the rotating hole and is fixedly connected to the upper end of the screw.

[0015] The beneficial effects of the utility model are:

[0016] The agricultural seedling raising device described in the utility model can adjust the height of each seedling raising board individually, and then can adjust the distance between each two adjacent seedling raising boards, and can adjust the distance between each two adjacent seedling raising boards according to the growth length of the seedlings. During the growth process of the seedlings, the possibility of the seedling raising boards on the upper side of the seedlings blocking the upward growth of the seedlings can be reduced.

[0017] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and will be apparent to those skilled in the art based on the following examination and research, or can be taught from the practice of the present invention to some extent. The objectives and other advantages of the present invention can be achieved and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the first embodiment of the utility model;

[0019] Figure 2 It is a cross-sectional view of the first embodiment of the utility model;

[0020] Figure 3 for Figure 2 Magnified view at A in the middle;

[0021] Figure 4 This is a diagram of the use state of the first embodiment of the utility model;

[0022] Figure 5 This is a schematic structural diagram of a threaded sleeve according to a first embodiment of the utility model;

[0023] Figure 6 for Figure 2 Enlarged view at center C;

[0024] Figure 7 for Figure 2 Enlarged view at D in the middle;

[0025] Figure 8 This is a diagram of the use state of the second embodiment of the utility model;

[0026] Fig. 9 A cross-sectional view of the second embodiment of the utility model in use;

[0027] Fig.10 for Fig. 9 Enlarged view of point B in the middle.

[0028] In the figure: 1, bracket; 101, bottom plate; 102, first vertical plate; 1021, first strip hole; 103, second vertical plate; 1031, second strip hole; 104, top plate; 2, seedling plate; 3, threaded sleeve; 4, screw; 5, locking mechanism; 6, first limiting ring; 7, second limiting ring; 8, locking hole; 9, locking groove; 10, locking rod; 11, locking screw hole; 12, locking bolt; 13, first slider; 1301, first fixing screw hole; 14, second slider; 1401, second fixing screw hole; 15, first fixing bolt; 16, second fixing bolt; 17, motor; DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Generally, the components of the embodiment of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0032] In the above description of the utility model, it should be noted that the terms "one side", "the other side", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0033] In addition, the term "same" does not mean that the parts must be absolutely the same, but slight differences are allowed. The term "vertical" only means that the positional relationship between the parts is more vertical than "parallel", and does not mean that the structure must be completely vertical, but can be slightly tilted.

[0034] First embodiment

[0035] See also Figure 1-Figure 3 The utility model provides a technical solution: an agricultural seedling raising device, comprising a bracket 1, a seedling raising plate 2, a threaded sleeve 3, a screw 4 and a locking mechanism 5. The seedling raising plate 2 is composed of multiple pieces, and the multiple seedling raising plates 2 are arranged at intervals in the up and down directions. The seedling raising plates 2 can be slidably arranged on the bracket 1 up and down. There are multiple threaded sleeves 3, and the multiple threaded sleeves 3 can be rotatably connected to the multiple seedling raising plates 2 one by one. The screw 4 can be rotatably connected to the bracket 1, and the screw 4 is screwed into the multiple threaded sleeves 3. There are multiple locking mechanisms 5, and the multiple locking mechanisms 5 correspond to the multiple threaded sleeves 3 one by one. The locking mechanism 5 is used to lock the threaded sleeves 3 to the corresponding seedling raising plates 2.

[0036] The upper surface of the seedling raising plate 2 of the utility model is concave downward to form a plurality of seedling raising grooves, and soil can be directly filled into the seedling raising grooves to cultivate seedlings. It can be understood that the seedling raising grooves are not a necessary structure of the utility model. For example, in some embodiments, when it is necessary to cultivate seedlings, a container containing soil can be directly placed on the seedling raising plate 2, and then the seedlings can be cultivated in the container.

[0037] When the agricultural seedling device described in the utility model is in an initial state, each of the locking mechanisms 5 does not lock the corresponding threaded sleeve 3 on the corresponding seedling raising plate 2. At this time, when the screw rod 4 is rotated, each of the threaded sleeves 3 can rotate with the screw rod 4, that is, each of the threaded sleeves 3 will not rotate relative to the screw rod 4, the threaded sleeve 3 will not move up and down on the screw rod 4, and the seedling raising plate 2 will not move up and down.

[0038] See also Figure 4In this paragraph, one of the seedling raising boards 2 is called the first seedling raising board, the threaded sleeve 3 corresponding to the first seedling raising board is called the first threaded sleeve, and the locking mechanism 5 corresponding to the first seedling raising board is called the first locking mechanism. When the first seedling raising board needs to be moved up and down, the first locking mechanism and the first threaded sleeve are locked on the first seedling raising board, so that the first threaded sleeve cannot rotate on the first seedling raising board, and the remaining locking mechanisms 5 are in a state where the corresponding threaded sleeve 3 is not locked on the corresponding seedling raising board 2. Then the screw rod 4 is rotated, and the first threaded sleeve cannot rotate with the screw rod 4, that is, the screw rod 4 can rotate relative to the first threaded sleeve, and the first threaded sleeve can move up and down driven by the screw rod 4, and the first seedling raising board can move up and down with the first threaded sleeve, so that the height of the first seedling raising board can be adjusted, and the remaining seedling raising boards 2 cannot move up and down driven by the screw rod 4.

[0039] According to the above steps, the height of each seedling raising board 2 can be adjusted individually, and then the distance between each two adjacent seedling raising boards 2 can be adjusted. The distance between each two adjacent seedling raising boards 2 can be adjusted according to the growth length of the seedlings. During the growth process of the seedlings, the possibility of the seedling raising boards 2 on the upper side of the seedlings blocking the upward growth of the seedlings can be reduced.

[0040] In this embodiment, a circular through hole is formed on each of the seedling raising plates 2; the agricultural seedling raising device described in the utility model also includes a plurality of first limiting rings 6 and a plurality of second limiting rings 7, the plurality of first limiting rings 6 correspond to the plurality of through holes one by one, the first limiting rings 6 are formed by protruding inward from the upper end of the inner circumference of the corresponding through hole, the plurality of second limiting rings 7 correspond to the plurality of through holes one by one, the second limiting rings 7 are formed by protruding inward from the lower end of the inner circumference of the corresponding through hole, the plurality of threaded sleeves 3 are located in the plurality of through holes one by one, the threaded sleeves 3 are adapted to the corresponding through holes, and the upper and lower side surfaces of the threaded sleeves 3 respectively abut the corresponding first limiting rings 6 and the corresponding second limiting rings 7. The screw rod 4 is located in the annular holes of the plurality of first limiting rings 6, and the screw rod 4 is located in the annular holes of the plurality of second limiting rings 7.

[0041] Since the through hole is circular, the threaded sleeve 3 is adapted to the corresponding through hole, and the threaded sleeve 3 can rotate in the through hole. Since the upper and lower sides of the threaded sleeve 3 respectively abut the corresponding first limiting ring 6 and the corresponding second limiting ring 7, the threaded sleeve 3 cannot escape from the through hole. With this structure, the threaded sleeve 3 can be rotatably connected to the corresponding seedling plate 2.

[0042] In this embodiment, a locking hole 8 is formed on the first limiting ring 6 along the up and down directions, and a locking groove 9 is formed on the upper side surface of the threaded sleeve 3 at a position corresponding to the locking hole 8; the locking mechanism 5 includes a locking rod 10, and the locking rod 10 is located in the locking hole 8. The locking rod 10 cooperates with the locking hole 8, and the lower end of the locking rod 10 is inserted into the locking groove 9.

[0043] After the lower end of the locking rod 10 is inserted into the locking groove 9 through the locking hole 8, the locking mechanism 5 can lock the threaded sleeve 3 on the corresponding seedling raising board 2. When the locking rod 10 is pulled out of the locking groove 9, the locking mechanism 5 can release the locking of the threaded sleeve 3, and the locking mechanism 5 is in a state where the corresponding threaded sleeve 3 is not locked on the corresponding seedling raising board 2. With this structure, it is convenient to lock the threaded sleeve 3 on the corresponding seedling raising board 2 and to release the locking mechanism 5 from locking the threaded sleeve 3.

[0044] In this embodiment, please refer to Figure 5 The locking groove 9 is arc-shaped, and the length of the locking groove 9 is greater than the diameter of the locking rod 10.

[0045] Before inserting the locking rod 10 into the locking groove 9, the screw rod 4 is rotated, the threaded sleeve 3 can rotate with the screw rod 4, and the locking groove 9 rotates with the threaded sleeve 3, until the locking groove 9 rotates to align with the locking hole 8, that is, the lower end of the locking rod 10 can pass through the locking hole 8 and be inserted into the locking groove 9. The length of the locking groove 9 is greater than the diameter of the locking rod 10, that is, the length of the locking groove 9 is greater than the diameter of the locking hole 8, so that the locking groove 9 is easier to rotate to align with the locking hole 8.

[0046] After the locking rod 10 is inserted into the locking groove 9, the screw rod 4 is rotated, and the threaded sleeve 3 can rotate a certain angle with the screw rod 4, and the locking groove 9 can rotate a certain angle with the threaded sleeve 3. When the groove wall at one end of the locking groove 9 is rotated to abut against the locking rod 10, the threaded sleeve 3 will be restricted by the locking rod 10 and cannot continue to rotate with the screw rod 4. At this time, the locking rod 10 can lock the threaded sleeve 3 on the corresponding seedling plate 2.

[0047] In this embodiment, the support 1 includes a bottom plate 101, a first vertical plate 102 and a second vertical plate 103, the first vertical plate 102 and the second vertical plate 103 are parallel to each other, the lower ends of the first vertical plate 102 and the second vertical plate 103 are fixedly connected to the bottom plate 101, the seedling raising plate 2 is located between the first vertical plate 102 and the second vertical plate 103, and the two ends of the seedling raising plate 2 can be slidably connected to the two first vertical plates 102 and the second vertical plates 103 up and down respectively; the screw rod 4 can be rotatably connected to the bottom plate 101. With this structure, the seedling raising plate 2 can be slidably set on the support 1 up and down, and the screw rod 4 can be rotatably connected to the support 1.

[0048] In this embodiment, the front and rear sides of the first vertical plate 102 are connected to a first reinforcement plate, the first reinforcement plate is tilted, the lower end of the first reinforcement plate is fixedly connected to the base plate 101, and the upper end of the first reinforcement plate is fixedly connected to the first vertical plate 102; the front and rear sides of the second vertical plate 103 are connected to a second reinforcement plate, the second reinforcement plate is tilted, the lower end of the second reinforcement plate is fixedly connected to the base plate 101, and the upper end of the second reinforcement plate is fixedly connected to the second vertical plate 103.

[0049] With this structure, the first reinforcing plate can reinforce and support the first vertical plate 102, and the second reinforcing plate can reinforce and support the second vertical plate 103, so that the bracket 1 is more solid, and the agricultural seedling raising device described in the utility model has better stability.

[0050] In this embodiment, a bearing is provided on the base plate 101, the lower side of the outer ring of the bearing is fixedly connected to the upper side of the base plate 101, and the lower end of the screw rod 4 is fixedly connected to the inner ring of the bearing. With this structure, the screw rod 4 can be rotatably connected to the bracket 1.

[0051] In this embodiment, a first strip hole 1021 is vertically arranged on the first vertical plate 102, and a second strip hole 1031 is vertically arranged on the second vertical plate 103; a first slider 13 and a second slider 14 are respectively fixed at both ends of the seedling raising plate 2, and the first slider 13 slides in the first strip hole 1021, and the second slider 14 slides in the second strip hole 1031.

[0052] Since the first slider 13 is slidably fitted in the first strip hole 1021, and the second slider 14 is slidably fitted in the second strip hole 1031, the two ends of the seedling raising plate 2 can be slidably connected to the two first vertical plates 102 and the second vertical plates 103. In addition, the first strip hole 1021 and the second strip hole 1031 can also guide the first slider 13 and the second slider 14 respectively, so that the seedling raising plate 2 can move up and down more stably.

[0053] In this embodiment, please refer to Figure 2 , Figure 6 as well as Figure 7 The side surface of each first sliding block 13 facing away from the seedling raising board 2 is recessed inward to form a first fixing screw hole 1301, and a first fixing bolt 15 is screwed into each of the first fixing screw holes 1301, and the bolt head of the first fixing bolt 15 is used to resist the side surface of the first vertical plate 102 facing away from the seedling raising board 2; the side surface of each second sliding block 14 facing away from the seedling raising board 2 is recessed inward to form a second fixing screw hole 1401, and a second fixing bolt 16 is screwed into each of the second fixing screw holes 1401, and the bolt head of the second fixing bolt 16 is used to resist the side surface of the second vertical plate 103 facing away from the seedling raising board 2.

[0054] When the seedling raising board 2 is in the initial state, the first fixing bolt 15 is screwed into the first fixing screw hole 1301, and the bolt head of the first fixing bolt 15 is against the side of the first vertical plate 102 facing away from the seedling raising board 2, and the second fixing bolt 16 is screwed into the second fixing screw hole 1401, and the bolt head of the second fixing bolt 16 is against the side of the second vertical plate 103 facing away from the seedling raising board 2. The first fixing bolt 15 and the second fixing bolt 16 can stably fix the seedling raising board 2 on the bracket 1.

[0055] Rotate the first fixing bolt 15 and the second fixing bolt 16 respectively located on both sides of the seedling raising board 2, so that the bolt head of the first fixing bolt 15 is separated from the side of the first vertical plate 102 facing away from the seedling raising board 2, and the bolt head of the second fixing bolt 16 is separated from the side of the second vertical plate 103 facing away from the seedling raising board 2, at this time, the fixing of the seedling raising board 2 by the first fixing bolt 15 and the second fixing bolt 16 can be released, and the two ends of the seedling raising board 2 can slide on the first vertical plate 102 and the second vertical plate 103 respectively. When it is necessary to adjust the height of one of the seedling raising boards 2, it is first necessary to release the fixing of the seedling raising board 2 by the first fixing bolt 15 and the second fixing bolt 16.

[0056] In this embodiment, the bracket 1 also includes a top plate 104, the two ends of which are respectively fixedly connected to the upper ends of the first vertical plate 102 and the second vertical plate 103, and a rotating hole is formed on the top plate 104 that penetrates the top plate 104 in the up and down directions; it also includes a motor 17, and the motor 17 can be a motor with model YX3-100L1-4. The motor 17 is fixed on the top plate 104, and the output shaft of the motor 17 passes downward through the rotating hole and is fixedly connected to the upper end of the screw rod 4.

[0057] The motor 17 is used as a power to drive the screw rod 4 to rotate, so as to adjust the height of the seedling raising plate 2. The screw rod 4 does not need to be rotated manually, which saves more effort when adjusting the height of the seedling raising plate 2.

[0058] Second embodiment

[0059] See also Figure 8-Figure 10 The second embodiment is merely a preferred embodiment of the first embodiment, and the implementation of the second embodiment will not affect the independent implementation of the first embodiment.

[0060] The difference from the first embodiment is that a locking screw hole 11 is formed on the first limiting ring 6, and the locking screw hole 11 passes through the upper and lower side surfaces of the first limiting ring 6; the locking mechanism 5 includes a locking bolt 12, and the locking bolt 12 is screwed into the locking screw hole 11, and the screwed-in end of the locking bolt 12 is used to resist the threaded sleeve 3.

[0061] In this embodiment, the screw-in end of the locking bolt 12 is screwed into the locking screw hole 11, and the screw-in end of the locking bolt 12 is pressed against the threaded sleeve 3, so that the locking mechanism 5 can lock the threaded sleeve 3 on the corresponding seedling raising board 2. By rotating the locking bolt 12, the screw-in end of the locking bolt 12 is disengaged from the threaded sleeve 3, and the locking mechanism 5 can release the locking of the threaded sleeve, and the locking mechanism 5 is in a state where the corresponding threaded sleeve 3 is not locked on the corresponding seedling raising board 2. With this structure, it is more convenient to lock the threaded sleeve 3 on the corresponding seedling raising board 2 and to release the locking mechanism 5 from locking the threaded sleeve 3.

[0062] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. An agricultural seedling raising device, characterized in that: The invention comprises a support (1), a seedling raising plate (2), a threaded sleeve (3), a screw rod (4) and a locking mechanism (5); the seedling raising plate (2) is provided in a plurality of pieces, the plurality of seedling raising plates (2) are arranged at intervals in the vertical direction, the seedling raising plate (2) can be slidably arranged on the support (1) in an upward and downward manner, the threaded sleeve (3) is provided in a plurality of pieces, the plurality of threaded sleeves (3) are rotatably connected to the plurality of seedling raising plates (2) in a one-to-one correspondence, the screw rod (4) is rotatably connected to the support (1), the screw rod (4) is screwed into the plurality of threaded sleeves (3), the locking mechanism (5) is provided in a plurality of pieces, the plurality of locking mechanisms (5) correspond to the plurality of threaded sleeves (3) in a one-to-one correspondence, and the locking mechanism (5) is used to lock the threaded sleeves (3) on the corresponding seedling raising plate (2).

2. The agricultural seedling raising device according to claim 1, characterized in that: A circular through hole is formed on each of the seedling raising plates (2); the plates also include a plurality of first limiting rings (6) and a plurality of second limiting rings (7), wherein the plurality of first limiting rings (6) correspond to the plurality of through holes one by one, and the first limiting rings (6) protrude inward from the upper end of the inner circumference of the corresponding through hole; the plurality of second limiting rings (7) correspond to the plurality of through holes one by one, and the second limiting rings (7) protrude inward from the lower end of the inner circumference of the corresponding through hole; the plurality of threaded sleeves (3) are located in the plurality of through holes one by one, and the threaded sleeves (3) are adapted to the corresponding through holes, and the upper and lower side surfaces of the threaded sleeves (3) respectively abut against the corresponding first limiting rings (6) and the corresponding second limiting rings (7).

3. The agricultural seedling raising device according to claim 2, characterized in that: A locking hole (8) is formed on the first limiting ring (6) along the up-down direction, and a locking groove (9) is formed by being recessed downward at a position corresponding to the locking hole (8) on the upper side surface of the threaded sleeve (3); the locking mechanism (5) comprises a locking rod (10), the locking rod (10) is located in the locking hole (8), the locking rod (10) cooperates with the locking hole (8), and the lower end of the locking rod (10) is inserted into the locking groove (9).

4. The agricultural seedling raising device according to claim 3, characterized in that: The locking groove (9) is arc-shaped, and the length of the locking groove (9) is greater than the diameter of the locking rod (10).

5. The agricultural seedling raising device according to claim 2, characterized in that: A locking screw hole (11) is formed on the first limiting ring (6), and the locking screw hole (11) passes through the upper and lower side surfaces of the first limiting ring (6); the locking mechanism (5) comprises a locking bolt (12), and the locking bolt (12) is screwed into the locking screw hole (11), and the screwed-in end of the locking bolt (12) is used to abut against the threaded sleeve (3).

6. The agricultural seedling raising device according to claim 1, characterized in that: The support (1) comprises a bottom plate (101), a first vertical plate (102) and a second vertical plate (103); the first vertical plate (102) and the second vertical plate (103) are parallel to each other; the lower ends of the first vertical plate (102) and the second vertical plate (103) are fixedly connected to the bottom plate (101); the seedling raising plate (2) is located between the first vertical plate (102) and the second vertical plate (103); the two ends of the seedling raising plate (2) can be slidably connected to the two first vertical plates (102) and the second vertical plates (103) up and down; the screw rod (4) can be rotatably connected to the bottom plate (101).

7. The agricultural seedling raising device according to claim 6, characterized in that: A first strip hole (1021) is vertically arranged on the first vertical plate (102), and a second strip hole (1031) is vertically arranged on the second vertical plate (103); a first slider (13) and a second slider (14) are respectively fixed at both ends of the seedling raising plate (2), the first slider (13) is slidably fitted in the first strip hole (1021), and the second slider (14) is slidably fitted in the second strip hole (1031).

8. The agricultural seedling raising device according to claim 7, characterized in that: The side surface of each first sliding block (13) facing away from the seedling raising plate (2) is recessed inward to form a first fixing screw hole (1301), and a first fixing bolt (15) is screwed into each of the first fixing screw holes (1301), and the bolt head of the first fixing bolt (15) is used to abut the side surface of the first vertical plate (102) facing away from the seedling raising plate (2); the side surface of each second sliding block (14) facing away from the seedling raising plate (2) is recessed inward to form a second fixing screw hole (1401), and a second fixing bolt (16) is screwed into each of the second fixing screw holes (1401), and the bolt head of the second fixing bolt (16) is used to abut the side surface of the second vertical plate (103) facing away from the seedling raising plate (2).

9. The agricultural seedling raising device according to claim 6, characterized in that: The bracket (1) further comprises a top plate (104), the two ends of which are respectively fixedly connected to the upper ends of the first vertical plate (102) and the second vertical plate (103), and the top plate (104) is provided with a rotating hole which passes through the top plate (104) in the up-down direction; and further comprises a motor (17), the motor (17) being fixedly mounted on the top plate (104), the output shaft of the motor (17) passing downward through the rotating hole and then fixedly connected to the upper end of the screw rod (4).

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