Field seedling transport system

Abstract

The present application relates to the technical field of agricultural planting machinery, and discloses a field seedling raising and conveying system, which comprises a conveying device, the conveying device comprises a transverse conveying frame and a longitudinal conveying frame, a bend device is arranged at the connection position of each transverse conveying frame and longitudinal conveying frame, the bend device comprises an arc-shaped conveying frame, the arc-shaped conveying frame is rotationally connected to a support frame, the arc-shaped conveying frame comprises arc-shaped side plates on opposite sides, an arc-shaped conveying belt in the middle and two guide conveying devices arranged at the two ends of the arc-shaped conveying belt, the guide conveying assembly comprises a U-shaped support plate, the U-shaped support plate is rotationally connected to the arc-shaped side plate, a telescopic assembly is arranged in the U-shaped support plate, and the telescopic assembly is used for conveying the seedling raising tray in the transverse conveying frame or the longitudinal conveying frame and the arc-shaped conveying belt for conveying and transferring, and the present application has the following advantages and effects: the conveying device is arranged in the field, the seedling raising tray can be quickly conveyed from the field to the recycling device, and manpower is significantly saved and efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of agricultural planting machinery technology, and in particular to a field seedling transport system. Background Technology

[0002] Rice is the world's third largest food crop and an important food source.

[0003] In the past, rice cultivation was mainly done manually, which required a large labor input, low planting density, and low yield per acre. Later, rice cultivation techniques were improved and mechanized planting was adopted, which greatly reduced the labor input and freed people's hands. However, in some areas, semi-automatic and semi-manual planting methods still exist in rice fields. In particular, when collecting seed trays and rice seedling trays after seedling cultivation, workers still need to manually carry the seedling trays one by one. Since the rice fields are large, many workers need to operate at the same time, which wastes labor, increases labor costs, and reduces efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a field seedling transport system that features automated transport, high transport efficiency, and labor savings.

[0005] The above-mentioned technical objective of the present invention is achieved through the following technical solution: a conveying device comprising a transverse conveying frame and a longitudinal conveying frame, characterized in that: each connection point between the transverse and longitudinal conveying frames is provided with an elbow device, the elbow device comprising an arc-shaped conveying frame rotatably connected to a support frame, the arc-shaped conveying frame comprising arc-shaped side plates on opposite sides, an arc-shaped conveyor belt in the middle, and two guiding conveying devices disposed at both ends of the arc-shaped conveyor belt, the guiding conveying assembly comprising a U-shaped support plate rotatably connected to the arc-shaped side plates, the U-shaped support plate being provided with a retractable component, the retractable component being used to convey and transfer seedling trays between the transverse or longitudinal conveying frame and the arc-shaped conveyor belt.

[0006] By adopting the above technical solution, a bend device is set at the connection between the horizontal conveyor and the vertical conveyor, which facilitates the transfer of seedling trays between the two conveyor frames. This allows seedling trays of any size in the field to be transferred from the field to a unified collection point for recycling, or seed trays to be transferred to the field for seedling cultivation. The automated conveying replaces the previous manual handling operation, saving a lot of manpower and significantly improving work efficiency.

[0007] A further configuration of the present invention is as follows: the retractable component includes a sliding plate slidably connected to a U-shaped support plate. The sliding plate is U-shaped, and two sliding synchronous pulleys are rotatably connected to the diagonal ends of the outer sides of the two side plates of the sliding plate, respectively. The first sliding synchronous pulley is located above the second sliding synchronous pulley. Fixed synchronous pulleys are rotatably connected to the inner walls of the two side plates of the U-shaped support plate at the same height as the sliding synchronous pulleys. A drive shaft is connected between the two fixed synchronous pulleys. A fixed synchronous pulley is also rotatably connected to the inner walls of the side plates of the U-shaped support plate. A second fixed synchronous pulley is provided. The first fixed synchronous pulley and the second fixed synchronous pulley are located on the diagonal of the inner wall of the side plate of the U-shaped support plate. The second fixed synchronous pulley is located below the second sliding synchronous pulley. A guide pulley is rotatably connected to the inner wall of the side plate of the U-shaped support plate below the first fixed synchronous pulley. A motor is fixed to the bottom surface of the bottom plate of the U-shaped support plate. A drive pulley is coaxially fixed to the output shaft of the motor. A conveyor synchronous belt is sequentially fitted on the drive pulley, the guide pulley, the second fixed synchronous pulley, the second sliding synchronous pulley, the first sliding synchronous pulley, and the first fixed synchronous pulley.

[0008] A further feature of the present invention is that: a cylinder is hinged to the bottom plate of the U-shaped support plate, the other end of the cylinder is hinged to the bottom plate of the sliding plate, an open slide groove is provided on the two side plates of the U-shaped support plate, and a guide rod parallel to the drive shaft passes through the two side plates of the sliding plate, the guide rod being slidably connected in the open slide groove.

[0009] By adopting the above technical solution, when it is necessary to extend the length of the conveyor belt between the fixed synchronous pulley and the sliding synchronous pulley, the cylinder is activated, the piston rod of the cylinder extends, and pushes the sliding plate to slide within the U-shaped support plate. The guide rod passing through the sliding plate slides within the open groove of the U-shaped support plate, supporting and guiding its sliding. As the sliding plate gradually moves away from the drive shaft, the distance between the sliding synchronous pulley and the fixed synchronous pulley becomes shorter, ensuring that the conveyor belt between the fixed synchronous pulley and the sliding synchronous pulley increases, which is equivalent to extending the length of the entire guiding conveyor device. After the extension of the guiding conveyor device, when the guiding conveyor device rotates to the point where its end point is below the conveyor belt in the transverse or longitudinal conveyor frame, the obtuse angle between the two is larger, that is, the slope between the guiding conveyor belt and the conveyor belt is gentler, which is conducive to a more stable uphill or downhill movement of the seedling tray, improving the stability of the seedling tray during conveying and increasing the conveying efficiency.

[0010] A further provision of the present invention is as follows: a driving assembly for driving the U-shaped support plate to rotate is provided on one side of the arc-shaped side plate. The driving assembly includes a second motor. An active bevel gear is fixed on the output shaft of the second motor. The active bevel gear meshes with a driven bevel gear. The driven bevel gear is coaxially fixed to one end of a lead screw. The lead screw is rotatably connected to the inner wall of the arc-shaped side plate. A slide rod is arranged parallel below the lead screw. A slider is slidably connected to the lead screw and the slide rod. A limit block is hinged to the side of the slider near the U-shaped support plate. A limit groove is provided on the outer side of one side plate of the U-shaped support plate, which gradually descends away from the driving shaft. The limit block is slidably connected in the limit groove.

[0011] By adopting the above technical solution, since the entire arc-shaped conveyor frame rotates within the support frame, it is positioned above the transverse and longitudinal conveyor frames. However, this results in the synchronous conveyor belt being located above the transverse and longitudinal conveyor frames and unable to intersect with the conveyor belts within them. Therefore, a drive assembly for rotating the U-shaped support plate is installed within the arc-shaped side plate. When the U-shaped support plate needs to be rotated, motor two is first started. Motor two drives the drive gear to rotate, which in turn drives the driven gear to rotate, thereby driving the lead screw to rotate. This drives the slider to slide on the lead screw and slide bar. The limiting block inside the slider is pushed to slide in the limiting groove. Initially, the limiting block is located at the bottom of the limiting groove. As it gradually descends away from the drive shaft, it eventually drives the U-shaped support plate to rotate closer to the transverse and longitudinal conveyor frames, ultimately bringing the synchronous conveyor belt and the conveyor belt closer together until they intersect. This ensures that the seedling trays can be smoothly transferred and transported between the transverse and longitudinal conveyor frames.

[0012] A further provision of the present invention is that a fine-tuning component is provided on the bottom plate of the U-shaped support plate. The fine-tuning component includes a square frame formed by four short rods hinged end to end. A sliding rod is hinged between two opposite short rods of the square frame. The sliding rod is slidably connected to the opening groove of the bottom plate of the U-shaped support plate. The short rod of the square frame away from the drive shaft is fixed to the bottom surface of the bottom plate of the sliding plate.

[0013] A further feature of the present invention is that a connecting rod is vertically fixed to one side plate of the sliding plate, and a wedge-shaped block in the shape of an inverted right trapezoid is fixed to the end of the connecting rod, with the hypotenuse of the wedge block being away from the connecting rod.

[0014] By adopting the above technical solution, in order to ensure the smooth transport of seedling trays, the arc of the arc-shaped conveyor frame needs to have a larger radius to facilitate the smooth turning and transport of seedling trays. Therefore, the conveyor belts in the two guide conveyor components are positioned far apart from each other. This means that when the conveyor belt rotates to the area below the conveyor belt, it may first contact the upper surface of the conveyor belt, preventing it from being positioned between the two conveyor belts. Therefore, this fine-tuning component is installed. When the U-shaped support plate rotates continuously, and the wedge-shaped block on the side plate of the sliding plate abuts against the side rod on the transverse or longitudinal conveyor frame, the side rod pushes inward and slides. Because the bottom surface of the sliding plate is connected to a square frame with hinged ends on all four sides, when the sliding plate... When subjected to thrust, the sliding plate causes the short rod connected to its base plate to rotate slightly around the sliding rod. This causes the sliding plate to rotate to a certain extent, ensuring that the two sliding synchronous pulleys on the sliding plate are ultimately positioned between the two conveyor belts of the transverse or longitudinal conveyor frame and rotated below the conveyor belt. This ensures stable guidance and conveying of the seedling trays. Meanwhile, since the cylinder is hinged to the U-shaped support plate and the sliding plate at both ends, this slight rotation will not affect its drive. Furthermore, the frame is a freely movable quadrilateral, and the sliding rod is connected to the opposite short rod, so the frame can ultimately rotate around the sliding rod, ensuring that the sliding plate has the space and feasibility to rotate when pushed by external force.

[0015] A further configuration of the present invention is as follows: a connecting plate is fixed to the bottom surface of the arc-shaped conveyor frame, the bottom surface of the connecting plate is connected to the external tooth slewing bearing, the external tooth slewing bearing is externally meshed with the drive gear, the drive gear is coaxially fixed to the output shaft of the motor three, and the motor three is fixed to the bottom surface of the support frame.

[0016] By adopting the above technical solution, when it is necessary to connect the transverse conveyor frame with the longitudinal conveyor frame in different directions, the third motor is started. The third motor drives the drive gear to rotate. The drive gear meshes with the external gear slewing bearing, and finally drives the connecting plate, i.e. the entire arc-shaped conveyor frame, to rotate and change direction, so that the two guide conveying devices are located above the transverse and longitudinal conveyor frames that need to be connected to form a channel. This can be used for seedling tray conveying work in different directions, and its practicality is enhanced.

[0017] A further feature of the present invention is that the inner walls of the two side plates of the transverse conveyor and the longitudinal conveyor are provided with conveyor belts.

[0018] The beneficial effects of this invention are: by setting an elbow device at the connection between the transverse conveyor and the longitudinal conveyor, the seedling trays can be easily transported between the two conveyor frames. This allows seedling trays of any size in the field to be transferred from the field to a unified collection point for recycling, or seed trays to be transferred to the field for seedling cultivation. The automated transport replaces the previous manual handling operation, saving a lot of manpower and significantly improving work efficiency. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of the present invention.

[0021] Figure 2 This is a schematic diagram of the elbow device in this invention.

[0022] Figure 3 This is a schematic diagram of the connection structure between the connecting plate and the support frame in this invention.

[0023] Figure 4 This is a schematic diagram of the structure of the retractable component in this invention when the belt is not stretched.

[0024] Figure 5 yes Figure 4 A schematic diagram of the explosion structure.

[0025] Figure 6 This is a schematic diagram of the structure of the retractable component in this invention when the belt is extended.

[0026] Figure 7 This is a schematic diagram of the structure of the retractable component in this invention when the belt is extended and the U-shaped support plate rotates.

[0027] Figure 8 yes Figure 7 A schematic diagram of the explosion structure.

[0028] In the diagram: 1. Transverse conveyor frame; 2. Longitudinal conveyor frame; 3. Bend device; 4. Arc-shaped conveyor frame; 5. Support frame; 6. Arc-shaped side plate; 7. Arc-shaped conveyor belt; 8. Guide conveyor device; 9. U-shaped support plate; 10. Sliding plate; 11. Sliding synchronous pulley one; 12. Sliding synchronous pulley two; 13. Fixed synchronous pulley one; 14. Fixed synchronous pulley two; 15. Drive shaft; 16. Guide pulley; 17. Motor one; 18. Active... 19. Pulley; 20. Cylinder; 21. Open slide groove; 22. Guide rod; 23. Motor II; 24. Driving bevel gear; 25. Driven bevel gear; 26. Lead screw; 27. Slide rod; 28. Slider; 29. ​​Limiting slide groove; 30. Frame; 31. Sliding rod; 32. Open slot; 33. Connecting rod; 34. Wedge block; 35. Connecting plate; 36. External gear slewing bearing; 37. Motor III; 38. Conveyor belt; 39. Driving gear. Detailed Implementation

[0029] The technical solution of the present invention will now be clearly and completely described with reference to specific embodiments. Obviously, the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0030] Example: A field seedling delivery system, such as Figure 1-8 As shown, the system includes a conveying device, which comprises a transverse conveyor frame 1 and a longitudinal conveyor frame 2. Each connection point between the transverse conveyor frame 1 and the longitudinal conveyor frame 2 is equipped with an elbow device 3. The elbow device 3 includes an arc-shaped conveyor frame 4, which is rotatably connected to a support frame 5. The arc-shaped conveyor frame 4 includes arc-shaped side plates 6 on opposite sides, an arc-shaped conveyor belt 7 in the middle, and two guide conveying devices 8 located at both ends of the arc-shaped conveyor belt 7. The guide conveying assembly includes a U-shaped support plate 9, which is rotatably connected to the arc-shaped side plates 6. The U-shaped support plate 9 contains... Equipped with a retractable component, the retractable component is used to transport seedling trays between the transverse conveyor frame 1 or the longitudinal conveyor frame 2 and the arc-shaped conveyor belt 7. An elbow device 3 is set at the connection between the transverse conveyor frame 1 and the longitudinal conveyor frame 2 to facilitate the transfer of seedling trays between the two conveyor frames. This allows seedling trays of any size in the field to be transferred from the field to a unified collection point for recycling, or seed trays to be transferred to the field for seedling cultivation. The automated transport replaces the previous manual handling operation, saving a lot of manpower and significantly improving work efficiency.

[0031] like Figure 4-8As shown, the retractable assembly includes a sliding plate 10 slidably connected to a U-shaped support plate 9. The sliding plate 10 is U-shaped, and two sliding synchronous pulleys 11 and 12 are rotatably connected to the diagonal ends of the outer sides of the two side plates of the sliding plate 10, respectively. The sliding synchronous pulley 11 is located above the sliding synchronous pulley 12. Fixed synchronous pulleys 13 are rotatably connected to the inner walls of the two side plates of the U-shaped support plate 9 at the same height as the sliding synchronous pulleys 11. A drive shaft 15 is connected between the two fixed synchronous pulleys 13. Fixed synchronous pulleys 14 are also rotatably connected to the inner walls of the side plates of the U-shaped support plate 9. The fixed synchronous pulleys 13 and 14 are connected to the drive shaft 15. Fixed synchronous pulley 2 14 is located on the diagonal of the inner wall of the side plate of the U-shaped support plate 9. Fixed synchronous pulley 2 14 is located below sliding synchronous pulley 2 12. Guide pulley 16 is rotatably connected to the inner wall of the side plate of the U-shaped support plate 9 below fixed synchronous pulley 1 13. Motor 1 17 is fixed to the bottom surface of the bottom plate of the U-shaped support plate 9. Drive pulley 18 is coaxially fixed to the output shaft of the motor. Conveyor synchronous belts are sequentially fitted on drive pulley 18, guide pulley 16, fixed synchronous pulley 2 14, sliding synchronous pulley 2 12, sliding synchronous pulley 1 11, and fixed synchronous pulley 13. Cylinder 19 is hinged to the bottom plate of the U-shaped support plate 9. The other end of the 19 is hinged to the base plate of the sliding plate 10. Opening grooves 20 are provided on the two side plates of the U-shaped support plate 9. A guide rod 21, parallel to the drive shaft 15, passes through the two side plates of the sliding plate 10. The guide rod 21 is slidably connected in the opening groove 20. When it is necessary to extend the length of the conveyor belt between the fixed timing pulley 13 and the sliding timing pulley 11, the cylinder 19 is activated. The piston rod of the cylinder 19 extends, pushing the sliding plate 10 to slide within the U-shaped support plate 9. The guide rod 21 passing through the sliding plate 10 slides within the opening groove 20 of the U-shaped support plate 9, supporting and guiding its sliding. As the sliding plate 10 gradually... As the pulley moves further away from the drive shaft 15, the distance between the sliding synchronous pulley 12 and the fixed synchronous pulley 14 becomes shorter, ensuring that the conveying synchronous belt between the fixed synchronous pulley 13 and the sliding synchronous pulley 11 increases. This is equivalent to extending the length of the entire guiding conveyor device 8. When the extended guiding conveyor device 8 rotates to the point where its end point is below the conveyor belt 37 in the transverse conveyor frame 1 or the longitudinal conveyor frame 2, the obtuse angle between the two is larger. That is, the slope between the guiding conveyor belt 37 and the conveyor belt 37 is gentler, which is conducive to a more stable uphill or downhill movement of the seedling tray, improving the stability of the seedling tray during conveying and increasing the conveying efficiency.

[0032] like Figure 5-8As shown, a drive assembly for rotating the U-shaped support plate 9 is provided on one side of the arc-shaped side plate 6. The drive assembly includes a second motor 22, and a driving bevel gear 23 is fixed on the output shaft of the second motor 22. The driving bevel gear 23 meshes with a driven bevel gear 24. The driven bevel gear 24 is coaxially fixed to one end of a lead screw 25. The lead screw 25 is rotatably connected to the inner wall of the arc-shaped side plate 6. A slide rod 26 is arranged parallel below the lead screw 25. A slider 27 is slidably connected to the lead screw 25 and the slide rod 26. A limit block is hinged to the side of the slider 27 near the U-shaped support plate 9. A limit groove 28 is provided on the outer side of one side plate of the U-shaped support plate 9, which gradually descends away from the drive shaft 15. The limit block is slidably connected in the limit groove 28. Since the entire arc-shaped conveyor frame 4 will rotate in the support frame 5, the entire arc-shaped conveyor frame 4 is located above the transverse conveyor frame 1 and the longitudinal conveyor frame 2. However, this will cause the conveyor timing belt to be located above the transverse conveyor frame 1 and the longitudinal conveyor frame 2. Since the longitudinal conveyor frame 2 cannot intersect with the transverse conveyor frame 1 or the conveyor belt 37 in the longitudinal conveyor frame 2, a drive assembly for rotating the U-shaped support plate 9 is installed inside the arc-shaped side plate 6. When the U-shaped support plate 9 needs to be rotated, the second motor 22 is started first. The second motor 22 drives the drive gear 38 to rotate, which in turn drives the driven gear to rotate, thereby driving the lead screw 25 to rotate. The slider 27 is driven to slide on the lead screw 25 and the slide bar 26. The limiting block inside the slider 27 is pushed to slide in the limiting groove 28. In the initial state, the limiting block is located at the bottom of the limiting groove 28. As it gradually descends away from the drive shaft 15, it can eventually drive the U-shaped support plate 9 to rotate closer to the transverse conveyor frame 1 and the longitudinal conveyor frame 2, so that the synchronous conveyor belt and the conveyor belt 37 approach each other until they form an intersection point. This ensures that the seedling tray can be smoothly transferred and transported between the transverse conveyor frame 1 and the longitudinal conveyor frame 2.

[0033] like Figure 5-8As shown, a fine-tuning assembly is also provided on the bottom plate of the U-shaped support plate 9. The fine-tuning assembly includes a square frame 29 formed by four short rods hinged end to end. A sliding rod 30 is hinged between two opposite short rods of the square frame 29. The sliding rod 30 is slidably connected in the opening groove 31 of the bottom plate of the U-shaped support plate 9. The short rod of the square frame 29 away from the drive shaft 15 is fixed to the bottom surface of the bottom plate of the sliding plate 10. A connecting rod 32 is vertically fixed on one side plate of the sliding plate 10. A wedge block 33 in the shape of an inverted right trapezoid is fixed to the end of the connecting rod 32. The inclined side of the wedge block 33 is far from the connecting rod 32. To ensure the smooth transport of the seedling tray, the arc of the arc-shaped conveyor frame 4 needs to have a larger radius to facilitate the smooth turning and transport of the seedling tray. Therefore, the conveyor belts in the two guide conveyor assemblies are in a state of being far apart from each other. As a result, when the conveyor belt rotates to the area below the conveyor belt 37, it may first contact the upper surface of the conveyor belt 37. This would prevent the conveyor belt from being positioned between the two conveyor belts 37. Therefore, this fine-tuning component is set up. When the U-shaped support plate 9 rotates continuously... When the sliding plate 10 is in motion, when the wedge-shaped block 33 on the side plate abuts against the side rod on the transverse conveyor frame 1 or the longitudinal conveyor frame 2, the side rod pushes inward and slides. Since the bottom surface of the sliding plate 10 is connected to a square frame 29 with four sides hinged end to end, when the sliding plate 10 is pushed, the sliding plate 10 drives the short rod connected to the bottom surface of its bottom plate to rotate slightly around the sliding rod 30. Thus, the sliding plate 10 rotates to a certain extent, ensuring that the two sliding synchronous pulleys 11 on the sliding plate 10 are finally positioned on the transverse conveyor frame 1 or the longitudinal conveyor frame. The two conveyor belts 37 of the cylinder 19 rotate between and below the conveyor belts 37, which can stably guide and transport the seedling tray. At the same time, since the two ends of the cylinder 19 are hinged to the U-shaped support plate 9 and the sliding plate 10 respectively, the slight rotation will not affect its drive. In addition, the square frame 29 is a freely movable quadrilateral and the sliding rod 30 is connected to the opposite short rod, so the square frame 29 can eventually rotate around the sliding rod 30, ensuring that the sliding plate 10 has the space and feasibility to rotate when it is pushed by external force.

[0034] like Figure 1-4 As shown, a connecting plate 34 is fixed to the bottom surface of the arc-shaped conveyor frame 4. The bottom surface of the connecting plate 34 is connected to the external tooth slewing bearing 35. The external tooth slewing bearing 35 is externally meshed with the drive gear 38. The drive gear 38 is coaxially fixed to the output shaft of the motor 36. The motor 36 is fixed to the bottom surface of the support frame 5. When it is necessary to connect the transverse conveyor frame 1 with the longitudinal conveyor frame 2 in different directions, the motor 36 is started. The motor 36 drives the drive gear 38 to rotate. The drive gear 38 is externally meshed with the external tooth slewing bearing 35, which ultimately drives the connecting plate 34, i.e. the entire arc-shaped conveyor frame 4, to rotate and change direction, so that the two guide conveying devices 8 are located above the transverse conveyor frame 1 and the longitudinal conveyor frame 2 that need to be connected to form a channel. This can be used for seedling tray conveying in different directions, which enhances its practicality.

[0035] The working principle of a field seedling delivery system is as follows:

[0036] First, determine the direction of the transverse conveyor 1 and the longitudinal conveyor 2 that need to be connected. Start the motor 36 to drive the entire arc-shaped conveyor 4 to rotate and change direction, so that the two guide conveyor devices 8 are located above the transverse conveyor 1 and the longitudinal conveyor 2 that need to be connected.

[0037] Then, cylinder 19 is activated, driving sliding plate 10 to slide within U-shaped support plate 9, extending the length of the entire conveyor belt in the telescopic assembly.

[0038] Then, start motor 22. Motor 22 rotates and drives slider 27 to slide on lead screw 25 and slide bar 26. The limiting block on slider 27 slides in limiting groove 28, driving the entire U-shaped support plate 9 to rotate and drive sliding plate 10 to approach transverse conveyor frame 1 or longitudinal conveyor frame 2.

[0039] When the wedge block 33 on the side plate of the sliding plate 10 abuts against the side rod on the transverse conveyor frame 1 or the longitudinal conveyor frame 2, the side rod pushes the sliding plate 10 inward, and the sliding plate 10 rotates to a certain extent, so that the two sliding synchronous pulleys 11 on the sliding plate 10 are finally located between the two conveyor belts 37 of the transverse conveyor frame 1 or the longitudinal conveyor frame 2, which can stably guide and transport the seedling tray.

Claims

1. A field seedling conveying system, comprising a conveying device, the conveying device including a transverse conveying frame (1) and a longitudinal conveying frame (2), wherein conveyor belts (37) are provided on the inner walls of the two side plates of the transverse conveying frame (1) and the longitudinal conveying frame (2), characterized in that: Each of the transverse conveyor frames (1) and longitudinal conveyor frames (2) is provided with an elbow device (3). The elbow device (3) includes an arc-shaped conveyor frame (4). The arc-shaped conveyor frame (4) is located above the transverse conveyor frame (1) and the longitudinal conveyor frame (2). The arc-shaped conveyor frame (4) is rotatably connected to the support frame (5). The arc-shaped conveyor frame (4) includes arc-shaped side plates (6) on opposite sides, an arc-shaped conveyor belt (7) in the middle, and two guide conveyor devices (8) at both ends of the arc-shaped conveyor belt (7). The guide conveyor device (8) includes a U-shaped support plate (9). The U-shaped support plate (9) is rotatably connected to the arc-shaped side plate (6). The U-shaped support plate (9) is provided with a telescopic component. The component is used to transport seedling trays on a transverse conveyor frame (1) or a longitudinal conveyor frame (2) and an arc-shaped conveyor belt (7). The telescopic component includes a sliding plate (10) slidably connected to a U-shaped support plate (9). The sliding plate (10) is U-shaped. Sliding synchronous pulley one (11) and sliding synchronous pulley two (12) are rotatably connected to the diagonal ends of the outer sides of the two side plates of the sliding plate (10). Sliding synchronous pulley one (11) is located above sliding synchronous pulley two (12). Fixed synchronous pulley one (13) is rotatably connected to the inner wall of the two side plates of the U-shaped support plate (9) at the same height as sliding synchronous pulley one (11). A drive is connected between the two fixed synchronous pulleys one (13). The rotating shaft (15) is connected to the inner wall of the side plate of the U-shaped support plate (9), and the fixed synchronous pulley two (14) is rotatably connected to it. The fixed synchronous pulley one (13) and the fixed synchronous pulley two (14) are located on the diagonal of the inner wall of the side plate of the U-shaped support plate (9). The fixed synchronous pulley two (14) is located below the sliding synchronous pulley two (12). The inner wall of the side plate of the U-shaped support plate (9) below the fixed synchronous pulley one (13) is rotatably connected to the guide pulley (16). The bottom surface of the bottom plate of the U-shaped support plate (9) is fixed with a motor one (17). The output shaft of the motor is coaxially fixed with a drive pulley (18). The drive pulley (18), the guide pulley (16), and the fixed synchronous pulley two (14) are connected to each other. A conveyor belt is sequentially fitted onto sliding synchronous pulley 2 (12), sliding synchronous pulley 1 (11), and fixed synchronous pulley 1 (13). A drive assembly for driving the U-shaped support plate (9) to rotate is provided on the arc-shaped side plate (6) on one side. The drive assembly includes motor 2 (22). An active bevel gear (23) is fixed on the output shaft of motor 2 (22). The active bevel gear (23) meshes with a driven bevel gear (24). The driven bevel gear (24) is coaxially fixed to one end of a lead screw (25). The lead screw (25) is rotatably connected to the inner wall of the arc-shaped side plate (6). A slide rod (26) is arranged parallel below the lead screw (25). A slider (27) is slidably connected to the lead screw (25) and the slide rod (26).The slider (27) is hinged to a limiting block on one side near the U-shaped support plate (9). A limiting groove (28) is provided on the outer side of one side plate of the U-shaped support plate (9) and gradually descends away from the drive shaft (15). The limiting block is slidably connected in the limiting groove (28). A connecting rod (32) is vertically fixed on one side plate of the sliding plate (10). A wedge block (33) in the shape of an inverted right trapezoid is fixed at the end of the connecting rod (32). The hypotenuse of the wedge block (33) is away from the connecting rod (32). When the U-shaped support plate (9) rotates continuously, the wedge block (33) on the side plate of the sliding plate (10) abuts against the transverse conveyor frame (1) or the longitudinal conveyor. When the sliding plate (10) is pushed onto the side rod on the conveyor frame (2), the side rod slides inward. Since the bottom surface of the sliding plate (10) is connected to a square frame (29) with four sides hinged at both ends, when the sliding plate (10) is pushed, the sliding plate (10) drives the short rod connected to the bottom surface of its base plate to rotate slightly around the sliding rod (30). Thus, the sliding plate (10) rotates to a certain extent, ensuring that the two sliding synchronous pulleys (11) on the sliding plate (10) are located between the two conveyor belts (37) of the transverse conveyor frame (1) or the longitudinal conveyor frame (2) and rotate to below the conveyor belt (37). Finally, the synchronous conveyor belt and the conveyor belt (37) approach each other until they form an intersection.

2. The field seedling transport system according to claim 1, characterized in that: A cylinder (19) is hinged to the bottom plate of the U-shaped support plate (9), and the other end of the cylinder (19) is hinged to the bottom plate of the sliding plate (10). Opening slide grooves (20) are provided on the two side plates of the U-shaped support plate (9). A guide rod (21) parallel to the drive shaft (15) passes through the two side plates of the sliding plate (10). The guide rod (21) is slidably connected in the open slide groove (20).

3. The field seedling transport system according to claim 2, characterized in that: The bottom plate of the U-shaped support plate (9) is also provided with a fine adjustment component. The fine adjustment component includes a square frame (29) formed by four short rods hinged end to end. A sliding rod (30) is hinged between two opposite short rods of the square frame (29). The sliding rod (30) is slidably connected in the opening groove (31) of the bottom plate of the U-shaped support plate (9). The short rods of the square frame (29) away from the drive shaft (15) are fixed to the bottom surface of the bottom plate of the sliding plate (10).

4. The field seedling transport system according to claim 3, characterized in that: The bottom surface of the arc-shaped conveyor frame (4) is fixed with a connecting plate (34). The bottom surface of the connecting plate (34) is connected to the external tooth slewing bearing (35). The external tooth slewing bearing (35) is externally meshed with the drive gear (38). The drive gear (38) is coaxially fixed on the output shaft of the motor three (36). The motor three (36) is fixed on the bottom surface of the support frame (5).

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