Automatic seedling raising seedling tray conveying device for greenhouse

Abstract

The invention relates to the technical field of seedling raising tray conveying, in particular to an automatic seedling raising tray conveying device for a greenhouse, which comprises a support, a conveying belt and blanking frames, the conveying belt is mounted at the top of the support and driven by a motor, and the blanking frames are distributed at two ends of the conveying belt. A conveying assembly is installed at the top of the support and located below the conveying belt, seedling raising trays are transferred to the top of a material shoveling plate from the conveying belt by adopting the conveying assembly and utilizing mutual approaching between the material shoveling plate and a push plate, the material shoveling plate rotates by 90 degrees through meshing between a quarter tooth groove and a rack, and the seedling raising trays are placed well; two seedling raising trays can be placed in each movement and are placed on the two sides of the conveying belt, the seedling raising trays can be rapidly conveyed on the two sides of the conveying belt, the position where the conveying belt is located can serve as a reserved passageway, the seedling raising tray placing steps are reduced, and meanwhile the conveying efficiency of the seedling raising trays can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of seedling raising tray transmission, and in particular to an automatic seedling raising tray transmission device for a greenhouse. Background Art

[0002] The main function of the seedling tray is to realize the seedling raising process of rice seedlings. The seedling tray is made of polyvinyl chloride and is made of vacuum forming through a special process formula. It has the characteristics of light weight, easy to carry, convenient for storage and preservation, and low cost of use. It is usually divided into hard seedling tray and soft seedling tray. It is generally used in greenhouses. Seedlings are cultivated in the seedling tray. After the seedling cultivation is completed, the seedlings on the seedling tray are removed.

[0003] The existing Chinese patent with publication number CN118439330A discloses an automatic seedling tray conveying device for a greenhouse, which belongs to the field of greenhouse conveying technology, including a greenhouse, wherein at least two groups of seedling beds are installed inside the greenhouse; a conveying unit, which is rotatably connected to the greenhouse; a transfer unit, which is rollingly connected in the greenhouse and is connected to a grabbing unit on the side; a reciprocating unit, which is rotatably connected to the grabbing unit; a cleaning unit, which is connected to the conveying unit through a driving unit; and an adjusting unit, which is rotatably connected to the cleaning unit. The transfer unit can automatically place the seedling tray on the surface of the conveying unit on the seedling bed with the cooperation of the reciprocating unit, and the degree of automation is high. The cleaning unit can slide back and forth up and down under the action of the conveying unit, so that the conveying unit can be automatically cleaned. The rotating adjusting unit can adjust the gap between the cleaning unit and the conveying unit, so that the best cleaning effect can be achieved to the maximum extent.

[0004] Generally speaking, an aisle is reserved when placing the seedling tray to facilitate the subsequent inspection of the growth of the seedlings. In the prior art, the seedling tray needs to be placed on the ground in the greenhouse. The greenhouse area is large and a large number of seedling trays are required. In order to ensure that the seedling trays are neatly placed, they are generally placed manually or one by one by a machine. This type of placement method requires artificially reserving an aisle and placing the seedling trays one by one. The transmission efficiency of the seedling trays in the greenhouse is low, which is not conducive to shortening the transmission time of the seedling trays. Summary of the invention

[0005] In view of the above-mentioned shortcomings of the prior art, the present invention provides an automatic seedling tray conveying device for a greenhouse.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] The present invention provides an automatic seedling tray conveying device for a greenhouse, comprising a support, a conveyor belt and a blanking frame, wherein the conveyor belt is installed on the top of the support and driven by a motor, and the blanking frames are distributed at both ends of the conveyor belt, and is characterized in that a conveying component is installed on the top of the support and the conveying component is located below the conveyor belt;

[0008] A plurality of spacer plates are fixedly connected to the outer side of the conveyor belt, and the plurality of spacer plates evenly separate the surface of the conveyor belt for placing the seedling raising tray;

[0009] The conveying assembly includes two moving frames slidably mounted on the top of the bracket, the two moving frames are staggered and fixedly connected by side walls, a slot is commonly provided between the two moving frames, one of the partition plates is fixedly inserted in the slot, and both moving frames are connected with a shoveling plate whose movement direction is toward the conveyor belt, two L-shaped fixed frames are symmetrically fixedly connected at the top edge of the moving frame, a push plate is fixedly connected to the top of the L-shaped fixed frame, and the push plates are respectively distributed opposite to the shoveling plates.

[0010] Furthermore, two second electric push rods are fixedly connected to the top of the movable frame, and movable rods are fixedly connected to the output ends of the two second electric push rods. The scraping plate is rotatably connected between the two movable rods through a torsion spring, and the torsion spring between the movable rod and the scraping plate provides elastic force for resetting the scraping plate.

[0011] Furthermore, both ends of the rotating shaft of the shovel plate are fixedly connected with square gear blocks, and the top of the square gear block is provided with a quarter gear groove.

[0012] Furthermore, the bottom of the cross bars of the two L-shaped fixing frames are fixedly connected with a plurality of racks meshing with the square gear block, and the number of the racks corresponds to the number of teeth of the square gear block. After the square gear block is meshed with the racks, the square gear block rotates°.

[0013] Furthermore, two support frames are fixedly connected to the top of the moving frame at a position corresponding to the square gear block, and the bottom surface of the square gear block can slide on the top surface of the support frame.

[0014] Furthermore, a material dropping trough is provided on the movable frame at a position corresponding to the material scraping plate, and a buffer plate is rotatably connected to the side wall of the material dropping trough via a torsion spring.

[0015] Furthermore, the side walls of the two movable frames are slidably connected to a fixed plate, the fixed plate is fixedly connected to one side of the movable rod, and the two fixed plates are on the same side, the bottom of the fixed plate is elastically rotatably connected to a push frame through a torsion spring, the bottom wall of the push frame is flush with the bottom wall of the movable frame, the fixed plate is slidably connected to a second magnet embedded in the position corresponding to the push frame, the push frame is embedded and fixedly connected to a first magnet at the position corresponding to the second magnet, and the second magnet generates a magnetic attraction on the first magnet.

[0016] Furthermore, one side of the second magnet is fixedly connected to a connecting frame, and the connecting frame is slidably installed on the movable frame. One side of the connecting frame is fixedly connected to a connecting plate through a connecting column, and the bottom of the connecting plate is fixedly connected to a friction strip, which is used to contact the top of the bracket and generate friction force. The push frame is located below the rotating shaft of the shovel plate.

[0017] Furthermore, the bracket includes a support plate as a main body, the movable frame is slidably installed on the top of the support plate, the bottom of the support plate is symmetrically fixedly connected to two side baffles, the bottom of the support plate is symmetrically fixedly connected to two groups of first electric push rods, and the output ends of the two groups of the first electric push rods are respectively fixedly connected to the side walls of the side baffles.

[0018] Furthermore, the blanking frame includes a base and a frame body movably inserted on the top of the base, and the frame body is used to accommodate the seedling tray.

[0019] Compared with the known public technology, the technical solution provided by the present invention has the following beneficial effects:

[0020] The present invention adopts a conveying component and utilizes the mutual proximity of a shovel plate and a push plate to transfer the seedling raising tray from the conveyor belt to the top of the shovel plate, and through the engagement between a quarter of the tooth groove and the rack, the shovel plate is rotated 90 degrees to place the seedling raising tray, so that two seedling raising trays can be placed in each movement and placed on both sides of the conveyor belt. The seedling raising trays can be quickly conveyed on both sides of the conveyor belt, and the position of the conveyor belt can be used as a reserved aisle, which reduces the steps of placing the seedling raising trays and can improve the conveying efficiency of the seedling raising trays and shorten the conveying time of the seedling raising trays.

[0021] The present invention uses a push-and-resist frame in the transmission assembly to push the placed seedling tray against the two sides of the bracket, thereby helping to correct the position of the seedling tray and facilitating the placement of the next seedling tray. At the same time, it also provides convenience for the subsequent side baffle to push the seedling tray, thereby facilitating the placement of the seedling tray.

[0022] By adopting the side baffles, after completing the placement of a round of seedling trays and after the push plate has pushed each seedling tray against the side baffles, the first electric push rod drives the side baffles so that the seedling trays can be pushed away in an orderly state to leave room for the placement of the next round of seedling trays. In this way, it can help improve the transmission efficiency of the seedling trays while ensuring that the seedling trays are placed neatly. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

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

[0025] Figure 2 It is a schematic diagram of the overall structure of the transmission component of the present invention;

[0026] Figure 3 It is a schematic diagram of the separation of the transmission components of the present invention;

[0027] Figure 4 For the present invention Figure 3 Enlarged view of point A in the middle;

[0028] Figure 5 A bottom view of the transmission assembly of the present invention;

[0029] Figure 6 For the present invention Figure 5 Enlarged view of point B in the middle;

[0030] Figure 7 It is a structural schematic diagram of the scraping plate of the present invention;

[0031] Figure 8 It is a bottom view schematic diagram of the bracket of the present invention;

[0032] Fig. 9 It is a schematic diagram of separating the blanking frame of the present invention.

[0033] The numbers in the figure represent respectively: 1. bracket; 101. support plate; 102. side baffle; 103. first electric push rod; 2. conveyor belt; 3. partition plate; 4. conveying assembly; 401. moving frame; 402. second electric push rod; 403. moving rod; 404. shovel plate; 405. blanking chute; 406. L-shaped fixed frame; 407. push plate; 408. slot; 409. square gear block; 410. rack; 411. support frame; 412. push frame; 413. first magnet; 414. second magnet; 415. connecting frame; 416. connecting plate; 417. friction strip; 418. buffer plate; 419. fixed plate; 5. blanking frame; 501. base; 502. frame. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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 creative work are within the scope of protection of the present invention.

[0035] The present invention will be further described below in conjunction with the embodiments.

[0036] Example: Refer to Figures 1 to 9 , an automatic seedling tray conveying device for a greenhouse, comprising a support 1, a conveyor belt 2 and a blanking frame 5, wherein the conveyor belt 2 is installed on the top of the support 1 and driven by a motor, and the blanking frames 5 are distributed at both ends of the conveyor belt 2, and a conveying component 4 is installed on the top of the support 1, and the conveying component 4 is located below the conveyor belt 2;

[0037] A plurality of partition plates 3 are fixedly connected to the outer side of the conveyor belt 2, and the plurality of partition plates 3 evenly separate the surface of the conveyor belt 2 for placing the seedling tray;

[0038] The conveying assembly 4 includes two moving frames 401 slidably mounted on the top of the bracket 1, the two moving frames 401 are staggered and fixedly connected by side walls, a slot 408 is commonly provided between the two moving frames 401, one of the partition plates 3 is fixedly inserted in the slot 408, and the two moving frames 401 are both connected with a shoveling plate 404 whose movement direction is toward the conveyor belt 2, and two L-shaped fixed frames 406 are symmetrically fixedly connected at the top edge of the moving frame 401, and a push plate 407 is fixedly connected to the top of the L-shaped fixed frame 406, and the push plates 407 are respectively distributed relative to the shoveling plates 404.

[0039] Specifically, two second electric push rods 402 are fixedly connected to the top of the moving frame 401, and the output ends of the two second electric push rods 402 are fixedly connected with moving rods 403. The scraping plate 404 is rotatably connected between the two moving rods 403 through a torsion spring. The torsion spring between the moving rod 403 and the scraping plate 404 provides elastic force for the scraping plate 404 to reset. Both ends of the rotating shaft of the scraping plate 404 are fixedly connected with square gear blocks 409. A quarter gear groove is opened on the top of the square gear block 409. The bottom of the cross bars of the two L-shaped fixed frames 406 are fixedly connected with a plurality of racks 410 meshing with the square gear blocks 409, and the number of racks 410 corresponds to the number of teeth of the square gear blocks 409. After the square gear block 409 is meshed with the racks 410, the square gear block 409 rotates 90°.

[0040] During the preparation, a sufficient number of seedling trays need to be placed in the blanking frame 5, and the entire conveying assembly 4 is located close to one end of the conveyor belt 2. At the same time, the conveyor belt 2 needs to be placed in the greenhouse. After all the seedling trays on the conveyor belt 2 are conveyed, the place where the seedling trays are not placed after the conveyor belt 2 is taken away from the greenhouse is the reserved aisle. During the conveying process of the conveyor belt 2, the conveyor belt 2 is driven and moved by the motor, and the seedling trays above the conveyor belt 2 are transported to the greenhouse. Figure 1 As the viewing angle reference, the transmission component 4 should be in this position, and Figure 1The direction of the middle arrow is the moving direction of the top of the conveyor belt 2. One step before the conveyor belt 2 is started, the second electric push rod 402 on the top of the moving frame 401 needs to be started to make the two shoveling plates 404 and the two push plates 407 move toward the direction of the conveyor belt 2. At this time, the two staggered shoveling plates 404 will contact the bottom of the seedling raising plate, and the push plates 407 will also contact the side of the seedling raising plate. In conjunction with the shoveling action of the shoveling plates 404 on the seedling raising plate, the push plates 407 opposite to the shoveling plates 404 will push the seedling raising plate toward the shoveling plates 404 until the moving rod 403 contacts the conveyor belt 2. At this time, the moving rod 403 and the shoveling plates 404 cannot continue to move, and the push plates 407 also push the seedling raising plate completely to the top of the shoveling plates 404. In this way, the seedling raising plate can be transferred from the top of the conveyor belt 2 to the shoveling plates 404. , and then the output end of the second electric push rod 402 extends out, carrying the moving rod 403 and the shoveling plate 404 out from the top of the conveyor belt 2. After the shoveling plate 404 moves to the bottom of the L-shaped fixing frame 406, the quarter gear groove on the square gear block 409 engages with the several racks 410 under the L-shaped fixing frame 406, and the square gear block 409 is forced to rotate through the relative movement of the shoveling plate 404 and the L-shaped fixing frame 406 until the square gear block 409 engages with the last rack 410. At this time, the square gear block 409 rotates 90°, and the shoveling plate 404 also rotates downward 90° along with the two square gear blocks 409. Then, the seedling raising tray on the top of the shoveling plate 404 gradually slides downward along with the rotation of the shoveling plate 404, and falls to the ground, completing the transmission of the seedling raising tray.

[0041] It should be noted that, as the conveyor belt 2 moves, the seedling raising tray on the blanking frame 5 will also be supplemented above the conveyor belt 2.

[0042] After the two shovel plates 404 have completed the transmission of one seedling tray, the conveyor belt 2 is started, and the partition plate 3 above the conveyor belt 2 is moved according to the Figure 1 The conveyor belt 2 moves in the direction of the middle arrow, and a partition plate 3 under the conveyor belt 2 contacts the two moving racks 401, allowing the two moving racks 401 to move toward the same direction. Figure 1 The conveyor belt 2 moves in the direction opposite to the direction of the middle arrow, and then the shoveling plate 404 scoops up the seedling tray on the top of the conveyor belt 2, and the push plate 407 pushes the seedling tray toward the shoveling plate 404. The spacing of the partition plate 3 is the width of the seedling tray, and each time the partition plate 3 moves one grid, the two movable frames 401 move the width of a seedling tray to the place where the seedling tray is not placed. In this way, with the movement of the partition plate 3, the shoveling plate 404 will place the seedling tray above the conveyor belt 2 on both sides of the conveyor belt 2, and each time it moves one grid, it is exactly the width of the seedling tray itself. In this way, after the conveyor belt 2 completes half a circle of movement, the shoveling plate 404 can lay the seedling trays on both sides of the conveyor belt 2, so as to better complete the transmission of the seedling trays and make the seedling trays close together, so as to achieve a better effect of transmitting the seedling trays.

[0043] It should be noted that the distance that the conveyor belt 2 moves each time is the spacing distance of the partition plates 3, and the spacing distance of the partition plates 3 is the width of the seedling tray, and the conveyor belt 2 is in a stopped state when the second electric push rod 402 is working.

[0044] Specifically, two support frames 411 are fixedly connected to the top of the moving frame 401 corresponding to the position of the square gear block 409 , and the bottom surface of the square gear block 409 can slide on the top surface of the support frame 411 .

[0045] When the shovel plate 404 has not moved to the bottom of the L-shaped fixing frame 406, the bottom walls of the square gear blocks 409 at both ends of the rotating shaft of the shovel plate 404 are close to the top wall of the support frame 411. Through the contact between the support frame 411 and the square gear block 409, the bottom wall of the square gear block 409 cannot rotate on the top wall of the support frame 411, so that the bottom wall of the square gear block 409 remains in a horizontal state, that is, the shovel plate 404 is kept horizontal like the bottom wall of the square gear block 409, ensuring that the seedling raising tray on the top of the shovel plate 404 is in a horizontal position, preventing the seedling raising tray from sliding on the shovel plate 404.

[0046] Specifically, a material dropping groove 405 is opened on the movable frame 401 at a position corresponding to the shoveling plate 404, and a buffer plate 418 is rotatably connected to the side wall of the material dropping groove 405 through a torsion spring, and the side walls of the two movable frames 401 are slidably connected with a fixed plate 419, and the fixed plate 419 is fixedly connected to one side of the movable rod 403, and the two fixed plates 419 are on the same side, and the bottom of the fixed plate 419 is elastically rotatably connected to a push frame 412 through a torsion spring, and the bottom wall of the push frame 412 is flush with the bottom wall of the movable frame 401, and the fixed plate 419 is slidably connected to the position corresponding to the push frame 412 with a second magnet 414, and the push frame 412 is embedded with a first magnet 413 fixedly connected to the position corresponding to the second magnet 414, and the second magnet 414 generates a magnetic attraction to the first magnet 413.

[0047] Specifically, one side of the second magnet 414 is fixedly connected to a connecting frame 415, and the connecting frame 415 is slidably installed on the movable frame 401. One side of the connecting frame 415 is fixedly connected to a connecting plate 416 through a connecting column, and the bottom of the connecting plate 416 is fixedly connected to a friction strip 417, which is used to contact the top of the bracket 1 and generate friction force. The push frame 412 is located below the rotating shaft of the shovel plate 404.

[0048] After the shovel board 404 completes the transmission of a seedling tray, the shovel board 404 moves one grid with the mobile frame 401, and at the same time, the fixed plate 419 also moves one grid with the mobile frame 401. At this time, the fixed plate 419 will move above the already placed seedling tray, and in the process of the shovel board 404 scooping up the next seedling tray, the friction strip 417 on the fixed plate 419 will contact the top wall of the bracket 1, and under the action of the friction force, the connecting plate 416 and the connecting frame 415 will be pushed out of the fixed plate 419, forcing the second magnet 414 and the first magnet 413 on the push frame 412 to stagger, and the first magnet 413 loses the magnetic force of the second magnet 414 on the first magnet 413 Suction, at this time, the push-pull frame 412 will rotate downward under the action of its own gravity, and the two ends of the push-pull frame 412 will fall into the seedling tray and press against the side walls of the seedling tray. As the moving rod 403 moves toward the conveyor belt 2, the push-pull frame 412 will also push the seedling tray toward the bracket 1 until the push-pull frame 412 completely presses the seedling tray against the side walls of the bracket 1, so that after the seedling tray is placed, the push-pull frame 412 can correct the position of the seedling tray, so that the seedling tray and the side walls of the bracket 1 remain vertical. In this way, when the next seedling tray is placed, it will not be affected by the inclination of the previous seedling tray, which facilitates the alignment of the seedling tray and reduces the occurrence of inclination of the seedling tray.

[0049] The movement range of the moving rod 403 is relatively large. As the moving rod 403 continues to extend, the pushing frame 412 will further rotate because the seedling tray is already close to the side wall of the bracket 1. When the moving rod 403 moves outward, that is, when the output end of the second electric push rod 402 extends, the pushing frame 412 is reset under the action of the torsion spring, and the reset of the moving rod 403 will also reset the fixed plate 419. The friction strip 417 on the fixed plate 419 will also reset the second magnet 414 under the action of friction, and generate magnetic attraction to the first magnet 413 on the pushing frame 412 again, so that the pushing frame 412 is sucked under the fixed plate 419.

[0050] Specifically, the bracket 1 includes a support plate 101 as a main body, the movable frame 401 is slidably installed on the top of the support plate 101, the bottom of the support plate 101 is symmetrically fixedly connected with two side baffles 102, the bottom of the support plate 101 is symmetrically fixedly connected with two groups of first electric push rods 103, and the output ends of the two groups of the first electric push rods 103 are respectively fixedly connected to the side walls of the side baffles 102.

[0051] After all the seedling trays on the conveyor belt 2 have been transported, the first electric push rod 103 can be started to push the side baffle 102 outward, pushing the seedling trays close to the outside of the side baffle 102 outward, and then the first electric push rod 103 is retracted to leave space, and then the motor on the conveyor belt 2 is reversed to directly reset the movable frame 401, and through the contact between the conveyor belt 2 and the seedling trays in the blanking frame 5, the seedling trays in the blanking frame 5 are supplemented on the top of the conveyor belt 2 to prepare for the placement of the next round of seedling trays, which can help improve the transmission efficiency of the seedling trays.

[0052] Specifically, the blanking frame 5 includes a base 501 and a frame body 502 movably inserted on the top of the base 501, and the frame body 502 is used to accommodate the seedling tray.

[0053] The bottom of the frame 502 has a notch facing the conveyor belt 2. When the seedling tray in the frame 502 contacts the conveyor belt 2, it will fall onto the conveyor belt 2 under the action of friction and its own gravity, and be located between the partition plates 3. Although the partition plates 3 will contact the bottom of the seedling tray, the seedling tray will also be raised to a certain height when the partition plates 3 contact the bottom of the seedling tray, so that the seedling tray cannot leave from the notch at the bottom of the frame 502. Therefore, the seedling tray can only fall on the top of the conveyor belt 2 when the seedling tray contacts the conveyor belt 2, and be brought out from the notch of the frame 502 by the conveyor belt 2.

[0054] It should be noted that after the placement of the first round of seedling trays on both sides is completed, the first electric push rod 103 will be started, and the side baffle 102 will withdraw the seedling tray from the position close to the side baffle 102, leaving space for the next round of seedling trays, and then the motor on the conveyor belt 2 will reverse. At this time, the movement of the conveyor belt 2 will bring the seedling trays in the frame 502 to the top of the conveyor belt 2, until the moving frame 401 is completely reset. At this time, there are already full seedling trays on the top of the conveyor belt 2. The purpose of this is that during the process of placing the seedling trays, although the conveyor belt 2 only moves one grid at a time, each action of the second electric push rod 402 will take away two seedling trays on the conveyor belt 2, and the moving frame 401 moves from one end of the conveyor belt 2 to the other. When the conveyor belt 2 is moved to one end, the placement of the seedling trays in the length direction and on both sides of the conveyor belt 2 is completed. However, if the conveyor belt 2 is not replenished with seedling trays when the movable frame 401 is reset, there will be no seedling trays on the conveyor belt 2 in the first half of the movement of the movable frame 401. Therefore, before the start of the conveying component 4 and before the placement of the next round of seedling trays, the seedling trays need to be placed on the conveyor belt 2. The reset of the movable frame 401 can complete the work of placing the seedling trays on the partition plate 3 in sequence without interfering with the placement of the seedling trays. Since the two movable frames 401 are in a staggered state, after all the seedling trays are placed, it is necessary to replenish the seedling trays at the staggered position of the movable frame 401, and the number of replenishments is two.

[0055] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. An automated seedling tray conveying device for a greenhouse, comprising a support (1), a conveyor belt (2) and a blanking frame (5), wherein the conveyor belt (2) is mounted on the top of the support (1) and driven by a motor, and the blanking frame (5) is distributed at both ends of the conveyor belt (2), characterized in that: A conveying assembly (4) is installed on the top of the support (1), and the conveying assembly (4) is located below the conveyor belt (2); A plurality of partition plates (3) are fixedly connected to the outer side surface of the conveyor belt (2), and the plurality of partition plates (3) evenly divide the surface of the conveyor belt (2) for placing seedling raising trays; The conveying assembly (4) includes two movable frames (401) slidably mounted on the top of the bracket (1), the two movable frames (401) are staggered and fixedly connected by side walls, a slot (408) is commonly provided between the two movable frames (401), one of the partition plates (3) is fixedly inserted in the slot (408), both movable frames (401) are connected with a shoveling plate (404) whose movement direction is toward the conveyor belt (2), two L-shaped fixed frames (406) are symmetrically fixedly connected at the top edge of the movable frame (401), and a push plate (407) is fixedly connected to the top of the L-shaped fixed frame (406), and the push plates (407) are respectively distributed relative to the shoveling plates (404).

2. The automatic seedling tray conveying device for greenhouse according to claim 1 is characterized in that: Two second electric push rods (402) are fixedly connected to the top of the moving frame (401), and the output ends of the two second electric push rods (402) are fixedly connected to moving rods (403). The shovel plate (404) is rotatably connected between the two moving rods (403) through a torsion spring, and the torsion spring between the moving rod (403) and the shovel plate (404) provides elastic force for resetting the shovel plate (404).

3. The automatic seedling tray conveying device for greenhouse according to claim 2 is characterized in that: Both ends of the rotating shaft of the shovel plate (404) are fixedly connected with a square gear block (409), and a quarter gear groove is opened on the top of the square gear block (409).

4. The automatic seedling tray conveying device for greenhouse according to claim 3 is characterized in that: The bottom of the crossbars of the two L-shaped fixing frames (406) are fixedly connected with a plurality of racks (410) meshing with the square gear block (409), and the number of the racks (410) corresponds to the number of teeth of the square gear block (409). After the square gear block (409) is meshed with the racks (410), the square gear block (409) rotates (90) degrees.

5. The automatic seedling tray conveying device for greenhouse according to claim 4, characterized in that: Two support frames (411) are fixedly connected to the top of the moving frame (401) at a position corresponding to the square gear block (409), and the bottom surface of the square gear block (409) can slide on the top surface of the support frame (411).

6. The automatic seedling tray conveying device for greenhouse according to claim 5, characterized in that: A material dropping trough (405) is provided on the movable frame (401) at a position corresponding to the material scraping plate (404), and a buffer plate (418) is rotatably connected to the side wall of the material dropping trough (405) via a torsion spring.

7. The automatic seedling tray conveying device for greenhouse according to claim 6, characterized in that: The side walls of the two movable frames (401) are both slidably connected with a fixed plate (419), the fixed plate (419) is fixedly connected to one side of the movable rod (403), and the two fixed plates (419) are on the same side, the bottom of the fixed plate (419) is elastically rotatably connected with a push frame (412) through a torsion spring, the bottom wall of the push frame (412) is flush with the bottom wall of the movable frame (401), the fixed plate (419) is slidably connected with a second magnet (414) embedded in the position corresponding to the push frame (412), the push frame (412) is fixedly connected with a first magnet (413) embedded in the position corresponding to the second magnet (414), and the second magnet (414) generates a magnetic attraction on the first magnet (413).

8. The automatic seedling tray conveying device for greenhouse according to claim 7, characterized in that: One side of the second magnet (414) is fixedly connected to a connecting frame (415), and the connecting frame (415) is slidably installed on the movable frame (401). One side of the connecting frame (415) is fixedly connected to a connecting plate (416) via a connecting column, and the bottom of the connecting plate (416) is fixedly connected to a friction strip (417), and the friction strip (417) is used to contact the top of the bracket (1) and generate friction force. The push frame (412) is located below the rotating shaft of the shovel plate (404).

9. The automatic seedling tray conveying device for greenhouse according to claim 8, characterized in that: The bracket (1) comprises a support plate (101) as a main body, the movable frame (401) is slidably mounted on the top of the support plate (101), the bottom of the support plate (101) is symmetrically fixedly connected to two side baffles (102), the bottom of the support plate (101) is symmetrically fixedly connected to two groups of first electric push rods (103), and the output ends of the two groups of the first electric push rods (103) are respectively fixedly connected to the side walls of the side baffles (102).

10. The automatic seedling tray conveying device for greenhouse according to claim 9, characterized in that: The blanking frame (5) comprises a base (501) and a frame body (502) movably inserted on the top of the base (501), and the frame body (502) is used to accommodate the seedling raising tray.

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