CN111183828A

CN111183828A - Rotating wheel type seedling culture frame, seedling culture device and culture system thereof

Info

Publication number: CN111183828A
Application number: CN202010135452.6A
Authority: CN
Inventors: 刘伟; 张学飞; 徐先良; 虞文武; 许西慧; 殷荣兴; 陈丽华; 陶波
Original assignee: Changzhou Vocational Institute of Mechatronic Technology
Current assignee: Changzhou Vocational Institute of Mechatronic Technology
Priority date: 2020-03-02
Filing date: 2020-03-02
Publication date: 2020-05-22

Abstract

The invention discloses a rotary wheel type seedling culture rack, a seedling culture device and a culture system thereof. The seedling culture device comprises a rack, two drivers and the rotary wheel type seedling culture racks, wherein the rotary shaft of one rotary wheel type seedling culture rack is connected with the drivers; the steel cables of the two runner type seedling culture racks are correspondingly connected to form an annular structure, so that the steel cables can circularly flow between the wheel parts of the two runner type seedling culture racks. Each cultivation vessel can move to the lowest position, so that the cultivation vessels are convenient for workers to observe and are convenient for supplying water together.

Description

Rotating wheel type seedling culture frame, seedling culture device and culture system thereof

Technical Field

The invention relates to the technical field of biological cultivation, in particular to a rotary wheel type seedling culture frame, a seedling culture device and a culture system thereof.

Background

For flowers with higher economic value, the survival rate of seedlings is often improved by adopting a greenhouse cultivation mode. In the cultivating stage, the seedlings are cultivated in cultivation vessels (such as flowerpots) which are placed on a commodity shelf in layers so as to improve the space utilization rate. In the cultivation process, people need to regularly observe the growth condition of seedlings, so that the cultivation plan is recorded and adjusted in time, and the seedling cultivation success rate is improved to the maximum extent. However, this cultivation method also has the following problems: (1) place the space problem, the supporter often only can the single rank be put, and the staff just can observe growing seedlings with one side like this, if put multirow supporter, need leave the clearance between the supporter, the staff of being convenient for observes the growth condition of growing seedlings of every row, and occupation space is great, and the staff need often make a round trip to walk about, work efficiency greatly reduced. (2) The height of placement is problematic. When the height of a commodity shelf for placing cultivation utensils is high, seedlings at a higher layer are inconvenient to be picked, placed and observed by people, so that great inconvenience is brought to cultivation work. (3) The problem of watering, when the cultivation quantity is more, the workload of manual watering is very large, and the working efficiency is low.

Disclosure of Invention

The invention provides a rotary wheel type seedling culture rack, and aims to solve the technical problem that when a plurality of rows of storage racks are placed in the prior art, the storage racks occupy a large space, and workers need to walk back and forth to observe the growth condition of seedlings, so that the working efficiency is reduced.

The invention provides a seedling culture device, and aims to solve the technical problem that seedlings at a higher layer and a lower layer are inconvenient to take, place and observe by people when a commodity shelf for placing cultivation utensils is higher in the prior art, so that great inconvenience is brought to culture work.

The invention provides a culture system, and aims to solve the technical problem that in the prior art, when a plurality of rows of storage racks are placed, the storage racks occupy larger space.

The technical scheme adopted by the invention for solving the technical problems is as follows:

a rotary wheel type seedling culture frame comprises a rotating shaft, wheel parts fixed at two ends of the rotating shaft and steel cables arranged corresponding to the wheel parts, wherein the steel cables are wound to the other side of the circumference of the wheel parts from one side of the circumference of the wheel parts through the outer edges of the wheel parts and synchronously run along with the wheel parts; when the wheel part rotates, the steel cable drives the cross beam to move, so that the position of the cultivation vessel is periodically changed.

Furthermore, a plurality of clamping grooves are distributed on the outer edge of the circumference of the wheel part, and when the cross beam is in contact with the wheel part, the cross beam is just clamped in the clamping grooves.

Furthermore, a support arc-shaped plate is further arranged between the clamping grooves at one axial end or two adjacent ends of the wheel part, and the steel cable is wound on the radial outer surface of the support arc-shaped plate.

A seedling culture device comprises a rack, a driver and the rotary wheel type seedling culture racks, wherein the rotary wheel type seedling culture racks are provided with two rotary wheel type seedling culture racks, the rotary wheel type seedling culture racks are rotatably connected to the rack along the height direction, and a rotating shaft of one rotary wheel type seedling culture rack is connected with the driver; the steel cables of the two runner type seedling culture racks are correspondingly connected to form an annular structure, so that the steel cables can circularly flow between the wheel parts of the two runner type seedling culture racks.

Further, still including being located the pond of culture apparatus below grows seedlings, the bottom of cultivation household utensils is equipped with the opening, works as when cultivation household utensils rotated the lowest, cultivation household utensils's bottom was located in the pond.

Further, the inside of cultivation household utensils is equipped with and is suitable for to cover open-ended fender soil cover, the lateral part that keeps off soil cover is equipped with the infiltration hole, the bottom of cultivation household utensils be equipped with by the opening edge to the baffle that keeps off the inside extension of soil cover, the baffle with it forms the retaining cavity to keep off between the lateral wall of soil cover.

Furthermore, a microporous structure body is also arranged on the soil blocking cover; the microporous structure body is arranged on one side of the water seepage hole, which is close to cultivation soil, so that the cultivation soil in the cultivation vessel is prevented from entering the water storage cavity through the water seepage hole.

Preferably, a synchronous transmission mechanism is further arranged between the rotating shafts of the two rotating wheel type seedling culture racks, and the synchronous transmission mechanism comprises a synchronous transmission shaft and a driving gear, a first intermediate gear, a second intermediate gear and a driven gear which are sequentially meshed with the conventional driving gear, the conventional first intermediate gear, the conventional second intermediate gear and the conventional driven gear; the driving gear, the first intermediate gear, the second intermediate gear and the driven gear are all bevel gears; the rotating shaft driven by the driver is coaxially fixed with the driving gear, the driven gear is coaxially fixed on the rotating shaft which is not connected with the driver, and the first intermediate gear and the second intermediate gear are positioned at two ends of the synchronous transmission shaft.

Preferably, still be equipped with the division board in the cultivation household utensils, be equipped with a plurality of through-holes on the division board, the cultivation household utensils bottom of division board both sides all is equipped with the opening.

A culture system comprises a plurality of seedling culture devices which are arranged in series, wherein a shaft coupling is connected between rotating shafts of the seedling culture devices.

The invention has the beneficial effects that:

(1) according to the rotary wheel type seedling culture frame, the beam on which the culture vessels are hung is driven by the steel cable to do reciprocating motion in a circulating mode, and the steel cable rotates along with the wheel part, so that the positions of the culture vessels arranged at any positions on the steel cable can be changed periodically, workers can observe the growth conditions of all seedlings at the same place, the convenience of culture work is greatly improved, the culture vessels can be kept horizontal all the time in a hanging state, and the rotary wheel type seedling culture frame is simple in structure.

(2) According to the seedling culture device, the steel cable in the annular structure is circulated by using the two rotary wheel type seedling culture racks, so that the cultivation vessels hung on the steel cable are in periodic operation, each cultivation vessel can move to the lowest position, the observation of workers is facilitated, and the water is supplied together.

(3) The water pool is arranged below the seedling culture device, and the cultivation vessel needing water supply only needs to be operated to the lowest position and is immersed in the water pool, so that water can be conveniently supplied, and labor force is reduced. The commodity shelf keeps horizontal through a multi-stage bevel gear transmission retaining mechanism, can realize the same-proportion transmission between two shafts which are arranged in parallel, and has a simple and reliable transmission mode.

(4) According to the seedling culture device, the two rotating shafts synchronously rotate through the synchronizing mechanism driven by the multi-stage bevel gears, so that the traction load of the steel cable is reduced, and the service life of the device is prolonged.

(5) According to the culture system, the plurality of seedling culture devices are connected through the couplers, and the whole row of seedling culture devices only need to be driven by one driver, so that the greenhouse space can be utilized to the maximum extent.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic view showing the installation of a rotating shaft and a wheel part in the rotary wheel type seedling culture shelf according to the present invention;

FIG. 2 is a perspective view of the seedling culture apparatus according to the present invention;

FIG. 3 is an enlarged view of FIG. 2 at a;

FIG. 4 is a front view of a seedling culture device of the culture system shown in FIG. 2;

FIG. 5 is a sectional view taken along line A-A of FIG. 4;

FIG. 6 is an enlarged view of FIG. 5 at b;

FIG. 7 is a front view of an embodiment of the cultivation system according to the invention.

In the figure, 1, a frame, 2, a driver, 3, a coupler, 4, a synchronous transmission mechanism, 401, a driven gear, 402, a first intermediate gear, 403, a synchronous transmission shaft, 404, a second intermediate gear, 405, a driving gear, 7, a beam, 8, a rotating shaft, 9, a steel cable, 10, a rotating wheel type seedling culture frame, 11, a culture vessel, 12, a water pool, 13, a separation plate, 14, a through hole, 15, a soil retaining cover, 16, a water seepage hole, 17, a micropore structure, 18, a baffle, 19, an opening, 20, culture soil, 21, a support arc plate, 22, a clamping groove, 23, a wheel part, 24 and a seedling culture device.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Example 1, as shown in fig. 1 to 3, a rotating wheel type seedling cultivation rack includes a rotating shaft 8, wheel portions 23 fixed at two ends of the rotating shaft 8, and steel cables 9 arranged corresponding to the wheel portions 23, wherein the steel cables 9 are wound from one side of the circumference of the wheel portions 23 to the other side of the circumference of the wheel portions 23 through the outer edges of the wheel portions 23 and run synchronously with the wheel portions 23, one or more cross beams 7 are arranged between the steel cables 9 corresponding to the two wheel portions 23, a cultivation vessel 11 is suspended under each cross beam 7, and the cultivation vessel 11 is kept horizontal under the action of gravity; when the wheel part 23 rotates, the steel cable 9 drives the beam 7 to move, so that the position of the cultivation vessel 11 is changed periodically.

The rotating shaft 8 is driven by external force to rotate, the wheel portion 23 and the rotating shaft 8 rotate synchronously, the steel cable 9 needs to be kept in a tight state all the time, all points on the steel cable 9 are movable points, so that the steel cable 9 runs along with the wheel portion 23, the steel cable 9 can be a circular ring sleeved on the wheel portion 23 or an annular structure, and the annular structure is circularly circulated by the rotating shaft 8 and a fixed shaft parallel to the rotating shaft 8. The two ends of the beam 7 are fixed on the steel cable 9, the cultivation vessel 11 is hung on the beam 7 through the U-shaped frame, the seedlings are directly cultivated in the cultivation vessel 11, and when the steel cable 9 rotates, the cultivation vessel 11 can always keep vertical hanging.

Preferably, a plurality of clamping grooves 22 are distributed on the outer edge of the circumference of the wheel part 23, when the cross beam 7 is in contact with the wheel part 23, the cross beam 7 is just clamped in the clamping grooves 22, and when the cross beam 7 is clamped in the clamping grooves 22, the cross beam 7 cannot shake, so that the seedling growing condition can be observed conveniently.

Embodiment 2, on the basis of embodiment 1, a supporting arc plate 21 is further disposed between two adjacent clamping grooves 22 at one axial end or two ends of the wheel portion 23, the steel cable 9 is wound on a radial outer surface of the supporting arc plate 21, as shown in fig. 3, the supporting arc plate 21 is located on a radial inner side of the steel cable 9, the supporting arc plate 21 can support the steel cables 9 clamped at two sides of the cross beam 7 in the clamping grooves 22, the wheel portion 23 serves as a side stop of the steel cable 9, the steel cable 9 can be prevented from falling off, preferably, each end of the cross beam 7 is connected with two steel cables 9, and a certain distance is provided between the two steel cables 9 so that the two steel cables 9 can be respectively supported on an outer circular surface of the supporting arc plate 21 at a corresponding side. Under the support of the support arc plate 21, the supported steel cable 9 can be in a stretched state, thereby avoiding winding or interference with other components and ensuring the normal operation of the rotating shaft 8. When two steel cables 9 are provided on the wheel portion 23, the wheel portion 23 may also isolate the two steel cables 9.

Example 3, a seedling culture device 24, as shown in fig. 2 to 5, comprising a frame 1, a driver 2 and the above-mentioned wheel-type seedling culture frame 10, two wheel-type seedling culture frames 10 are provided and rotatably connected to the frame 1 in the height direction, wherein a rotating shaft 8 of one wheel-type seedling culture frame 10 is connected to the driver 2; the steel cables 9 of the two runner type seedling culture racks 10 are correspondingly connected to form a ring structure, so that the steel cables 9 circularly flow between the wheel parts 23 of the two runner type seedling culture racks 10.

The drive 2 is usually a speed reducing motor, and the frame 1 can be an integral frame structure or a free-standing stand structure. The latter structure is preferable in the present invention to realize the installation of the swivel type seedling culture shelf 10. Specifically, two sets of bearing seats are arranged on the frame 1, wherein one set of bearing seats is arranged at a lower position (for installing the rotary wheel type seedling culture rack 10 positioned below), and the other set of bearing seats is arranged at a higher position (for installing the rotary wheel type seedling culture rack 10 positioned above). The rotary wheel type seedling culture shelf 10 is arranged on a corresponding group of bearing seats on the frame 1 in a way of rotating up and down.

As shown in fig. 1 and 2, the rotary wheel type seedling culture shelf 10 has a rotating shaft 8 and a wheel part 23 arranged on the rotating shaft 8; the wheel part 23 is provided with a plurality of clamping grooves 22 which are uniformly distributed; the rotating shaft 8 of one of the runner type seedling culture frames 10 is connected with the main shaft of the driver 2 through the coupling 3. The driver 2 is arranged on a motor base at one side of the frame 1.

The number of the cross beams 7 is plural, and both ends thereof are connected by at least one wire rope 9, respectively (two wire ropes 9 in fig. 3). The connection of the cables 9 ensures that all the cross beams 7 are equally spaced and parallel to each other. The beam 7 can be sequentially clamped into the clamping grooves 22 of the wheel parts 23 so as to drive the two rotating wheels to synchronously rotate.

The cultivation vessels 11 are hung on the corresponding cross beams 7 and can be kept in a suspension state under the action of gravity.

When the seedling culture device is used, the driver 2 is periodically started to drive the runner type seedling culture frame 10 to rotate for a certain angle, so that the cross beam 7 and the cultivation vessel 11 hung on the cross beam move for a certain distance, and the requirements of convenient taking, placing and observation are met. When the cross beam 7 rotates to the lowest point of the runner type seedling culture shelf 10, the cross beam rises along the opposite direction to reach the highest point (under the action of driving force), and the whole circulation can be realized by the cyclic reciprocation.

Embodiment 4, on the basis of embodiment 3, the seedling culture device 24 further comprises a water pool 12 located below the seedling culture device 24, the bottom of the cultivation vessel 11 is provided with an opening 19, and when the cultivation vessel 11 rotates to the lowest position, the bottom of the cultivation vessel 11 is located in the water pool 12 and can be submerged below the water level in the water pool 12. Through the continuous rotation of the rotary wheel type seedling culture shelf 10, each cultivation vessel 11 can be immersed in the water pool 12, so that the water required for the growth of the seedlings is provided. In practical use, the water supplementing time interval can be set according to the biological characteristics of each seedling, so that the rotation period of the rotary wheel type seedling culture rack 10 is set.

Example 5 on the basis of example 4, as shown in fig. 6, a retaining cover 15 adapted to cover an opening 19 is provided in the interior of a cultivation vessel 11, water seepage holes 16 are provided in the side portion of the retaining cover 15, a baffle 18 extending from the edge of the opening 19 to the interior of the retaining cover 15 is provided in the bottom of the cultivation vessel 11, a water storage cavity is formed between the baffle 18 and the side wall of the retaining cover 15, and a water inlet channel is formed between the inner walls of the baffle 18. During the period from when the cultivation vessel 11 is submerged below the water level of the basin 12 to when it leaves, water in the basin 12 enters the water inlet channel through the opening 19 and overflows the top of the baffle 18 into the water storage cavity. Thus, part of water is remained in the water storage cavity, and water is continuously supplied to the cultivation soil 20 and the seedlings.

Preferably, the retaining cover 15 is further provided with a microporous structure 17; the micro-porous structure 17 is provided on a side of the water seepage hole 16 close to the cultivation soil 20 to prevent the cultivation soil 20 in the cultivation vessel 11 from entering the water storage cavity through the water seepage hole 16. The microporous structure 17 ensures that water enters the cultivation soil 20 on the one hand and that the cultivation soil 20 does not enter the reservoir chamber on the other hand. The microporous structure 17 may be a sponge block.

In embodiment 6, on the basis of embodiment 3, embodiment 4, or embodiment 5, a synchronous transmission mechanism 4 is further disposed between the rotating shafts 8 of the two rotating wheel type seedling culture racks 10, as shown in fig. 2 and fig. 4, the synchronous transmission mechanism 4 is a multi-stage transmission structure, and may be a gear transmission, a worm gear transmission, a sprocket transmission, etc., and the present embodiment describes a specific structure by taking the gear transmission as an example: as shown in fig. 2 and 4, the synchromesh mechanism 4 includes a synchromesh shaft 403 and a drive gear 405, a first intermediate gear 402, a second intermediate gear 404, and a driven gear 401 that mesh in this order; the driving gear 405, the first intermediate gear 402, the second intermediate gear 404 and the driven gear 401 are all bevel gears; the rotary shaft 8 driven by the driver 2 is coaxially fixed to the driving gear 405, the driven gear 401 is coaxially fixed to the rotary shaft 8 which is not connected to the driver 2, and the first intermediate gear 402 and the second intermediate gear 404 are located at both ends of the synchronizing shaft 403. The transmission ratio of the synchronous transmission mechanism 4 is 1:1, the meshing surface of the first intermediate gear 402 and the driving gear 405 and the meshing surface of the second intermediate gear 404 and the driven gear 401 are in the same orientation, and the rotating speed and the rotating direction of the two rotating shafts 8 in transmission connection are the same.

The transmission shaft is arranged on the frame 1 through a bearing seat. When the driver 2 drives the lower runner type seedling culture frame 10 to rotate, the runner type seedling culture frame 10 drives the upper runner type seedling culture frame 10 to rotate through the synchronous transmission mechanism 4, so that the traction burden of the steel cable 9 can be reduced, and the phenomenon that the cross beam 7 cannot be correctly clamped into the corresponding clamping groove 22 due to the fact that the cross beam stretches out and deforms under long-time pulling is avoided.

Preferably, as shown in fig. 5 and 6, a partition plate 13 is further arranged in the cultivation vessel 11, a plurality of through holes 14 are formed in the partition plate 13, openings 19 are formed in the bottoms of the cultivation vessels 11 on both sides of the partition plate 13, and two rows of seedlings can be placed in each cultivation vessel 11 as shown in the figure.

Preferably, the opening 19 at the bottom of the cultivation vessel 11 is arranged along the length direction thereof, so that more seedlings can be sufficiently moistened.

Example 7, a cultivation system, as shown in fig. 7, comprises a plurality of the above-described seedling culture devices 24 arranged in series, and a coupling 3 is connected between the rotary shafts 8 of the adjacent seedling culture devices 24. Under the appropriate circumstances in place space, set up the culture apparatus 24 of growing seedlings in series, realize that whole row's culture apparatus 24 of growing seedlings is driven by a driver 2, can utilize greenhouse space to the at utmost. When in connection, the rotating shafts 8 of all the rotating wheel type seedling culture racks 10 at the same height are connected through the couplers 3 in sequence, namely only one coupler 3 needs to be arranged between the adjacent rotating wheel type seedling culture racks 10. In this specification, the schematic representations of the terms are not necessarily referring to the same embodiment. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments.

In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. The utility model provides a runner formula cultivation frame of growing seedlings which characterized in that: the cultivation device comprises a rotating shaft (8), wheel parts (23) fixed at two ends of the rotating shaft (8) and a steel cable (9) correspondingly arranged with the wheel parts (23), wherein the steel cable (9) is wound on one side of the circumference of each wheel part (23) through the outer edge of each wheel part (23) to the other side of the circumference of each wheel part (23) and runs along with the wheel parts (23) synchronously, one or more cross beams (7) are arranged between the steel cables (9) corresponding to the two wheel parts (23), a cultivation vessel (11) is hung under each cross beam (7), and the cultivation vessel (11) is kept horizontal under the action of gravity;

when the wheel part (23) rotates, the steel cable (9) drives the cross beam (7) to move, so that the position of the cultivation vessel (11) is changed periodically.

2. The rotating wheel type seedling culture shelf according to claim 1, characterized in that: a plurality of clamping grooves (22) are distributed on the outer edge of the circumference of the wheel part (23), and when the cross beam (7) is in contact with the wheel part (23), the cross beam (7) is just clamped in the clamping grooves (22).

3. The rotary wheel type seedling culture shelf according to claim 2, characterized in that: the pulley portion (23) is characterized in that a supporting arc-shaped plate (21) is further arranged between the clamping grooves (22) at one axial end or two adjacent ends of the pulley portion, and the steel cable (9) is wound on the radial outer surface of the supporting arc-shaped plate (21).

4. The utility model provides a culture apparatus grows seedlings which characterized in that: comprises a frame (1), a driver (2) and a runner type seedling culture frame (10) as claimed in any one of claims 1-3, wherein two runner type seedling culture frames (10) are arranged and are rotatably connected to the frame (1) along the height direction, and a rotating shaft (8) of one runner type seedling culture frame (10) is connected with the driver (2);

the steel cables (9) of the two runner type seedling culture racks (10) are correspondingly connected to form an annular structure, so that the steel cables (9) can circularly flow between the wheel parts (23) of the two runner type seedling culture racks (10).

5. A seedling culture device according to claim 4, characterized in that: still including being located pond (12) of growing seedlings culture apparatus (24) below, the bottom of cultivation household utensils (11) is equipped with opening (19), works as cultivation household utensils (11) rotate to the lowest when, the bottom of cultivation household utensils (11) is located in pond (12).

6. A seedling culture device according to claim 5, characterized in that: the inside of cultivation household utensils (11) is equipped with and is suitable for to cover soil guard cover (15) of opening (19), the lateral part that soil guard cover (15) is equipped with infiltration hole (16), the bottom of cultivation household utensils (11) be equipped with by opening (19) edge to baffle (18) that the inside of soil guard cover (15) extended, baffle (18) with form the retaining cavity between the lateral wall of soil guard cover (15).

7. A seedling culture device according to claim 6, characterized in that: the soil retaining cover (15) is also provided with a microporous structure body (17); the microporous structure body (17) is arranged on one side, close to the cultivation soil (20), of the water seepage hole (16) so as to prevent the cultivation soil (20) in the cultivation vessel (11) from entering the water storage cavity through the water seepage hole (16).

8. A seedling culture device according to claim 7, characterized in that: still be equipped with division board (13) in cultivation household utensils (11), be equipped with a plurality of through-holes (14) on division board (13), cultivation household utensils (11) bottom of division board (13) both sides all is equipped with opening (19).

9. A seedling culture device according to claim 5, characterized in that: a synchronous transmission mechanism (4) is further arranged between the rotating shafts (8) of the two rotary wheel type seedling culture racks (10), and the synchronous transmission mechanism (4) comprises a synchronous transmission shaft (403) and a driving gear (405), a first intermediate gear (402), a second intermediate gear (404) and a driven gear (401) which are meshed with the traditional driving gear, the first intermediate gear (402), the second intermediate gear (404) and the driven gear in sequence; the driving gear (405), the first intermediate gear (402), the second intermediate gear (404) and the driven gear (401) are all bevel gears; a rotating shaft (8) driven by the driver (2) is coaxially fixed with the driving gear (405), the driven gear (401) is coaxially fixed on the rotating shaft (8) which is not connected with the driver (2), and the first intermediate gear (402) and the second intermediate gear (404) are positioned at two ends of the synchronous transmission shaft (403).

10. A culture system, characterized by: comprising a plurality of seedling culture devices (24) as claimed in any one of claims 4 to 9 arranged in series, a coupling (3) being connected between the shafts (8) of adjacent seedling culture devices (24).