Pot seedling transplanter

Abstract

The pot seedling transplanter comprises a seedling feeding mechanism, a seedling clamping mechanism and a seedling planting mechanism, the seedling feeding mechanism is driven by a motor and provided with a dial, a plurality of notches are formed in the periphery of the dial, and when the notches rotate to an induction area of a first sensor, the first sensor sends out a signal enabling the motor to stop rotating to finish one-time seedling feeding; the seedling clamping mechanism comprises a seedling clamping cylinder rotationally mounted on the pivot, a plurality of pairs of seedling clamps are mounted on the seedling clamping cylinder, one end of the seedling clamping cylinder is connected with a signal disc, an induction part is arranged on the signal disc, and when the induction part rotates to an induction area of a second sensor, the second sensor sends out a signal for enabling the motor to rotationally feed seedlings. Mechanical seedling clamping and electric seedling feeding are adopted, the speed is high, accuracy is achieved, the structure is simple, the production cost is low, faults are not prone to occurring during operation, and the duckbilled seedling planting mechanism is adopted, so that the pot seedling transplanter can be universally suitable for dry land crops such as vegetables, cotton and tobacco.

Description

Technical Field

[0001] The invention relates to the technical field of transplanting machines, and in particular to a pot seedling transplanting machine. Background Art

[0002] In the production process of agricultural crops such as vegetables, cotton, and tobacco, seedling raising and transplanting is an indispensable process. The use of seedling raising and transplanting technology can increase the per-acre yield of crops, improve their ability to resist insects, drought, and salinity, shorten the growth period of crops, and also facilitate the mechanization and automation of transplanting.

[0003] At present, the more advanced vegetable (such as pepper) seedling transplanting machines in the industry mostly use pneumatic seedling clamping devices. For example, Chinese invention patent CN107041191A discloses an integrated seedling transplanting machine pneumatic seedling removal device. Although it can improve the working efficiency through the pneumatic seedling removal device, the clamping mechanism is relatively complex and has a high failure rate. For another example, Chinese invention patent CN107852919A discloses a seedling removal and seedling throwing device of a seedling transplanting machine and a seedling removal and seedling throwing method thereof. It realizes the delivery, clamping, throwing and spacing of seedlings through the mutual operation and cooperation of the pneumatic mechanism and the controller. The pneumatic mechanism requires an air pump, which increases the cost. Therefore, the industry urgently needs a seedling transplanting machine that is generally applicable to vegetables, cotton, tobacco, etc., and has high working efficiency, reliable work and low cost. Summary of the invention

[0004] In view of this, the technical problem to be solved by the present invention is to provide a pot seedling transplanter, which has high operating efficiency, reliable operation, low cost, and is generally applicable to dryland crops such as vegetables, cotton, and tobacco.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] A seedling transplanter comprises: a frame, on which a seedling delivery mechanism, a seedling clamping mechanism and a seedling planting mechanism are installed, the seedling clamping mechanism clamps the seedlings delivered by the seedling delivery mechanism and throws them into a seedling guide tube, the seedlings fall from the seedling guide tube into the seedling planting mechanism, and when the seedling planting mechanism rotates to a suitable position, the seedlings are planted in the soil, and the seedling guide tube is fixed to the frame; the seedling delivery mechanism comprises a first bracket fixed to the frame, a chain transmission device for driving the seedling tray to move is installed on the first bracket, the driving shaft of the chain transmission device is driven by a motor, one end of the driven shaft of the chain transmission device is provided with a scale plate, a plurality of notches are opened around the scale plate, a first sensor for sensing the notches is fixed to the first bracket, and when the notches are When the slot rotates to the sensing area of ​​the first sensor, the first sensor sends a signal to stop the motor and end one seedling delivery; the seedling clamping mechanism includes a second bracket fixed to the frame, the second bracket is fixedly provided with a pivot, the pivot is rotatably installed with a seedling clamping tube, the seedling clamping tube is connected to the ground wheel through a first transmission device, the seedling clamping tube is installed with multiple pairs of seedling clamps, the seedling clamping tube rotates one circle, and each pair of seedling clamps successively clamps and drops a seedling in a pot; one end of the seedling clamping tube is connected to a signal disk, the signal disk is provided with a sensing part, the second bracket is provided with a second sensor, when the sensing part rotates one circle to the sensing area of ​​the second sensor, the second sensor sends a signal to make the motor rotate to deliver the seedlings.

[0007] Wherein, the chain transmission device includes the driving shaft and the driven shaft, the driving shaft and the driven shaft are rotatably mounted on the first bracket, the two ends of the driving shaft are respectively provided with a first driving sprocket and a second driving sprocket, the two ends of the driven shaft are respectively provided with a first driven sprocket and a second driven sprocket, a first chain is wound around the first driving sprocket and the first driven sprocket, a second chain is wound around the second driving sprocket and the second driven sprocket, a dial rod is connected between the first chain and the second chain, and the first bracket is installed with a seedling tray guide rod for guiding the seedling tray to flip.

[0008] Wherein, the rice clamp comprises a left clamp and a right clamp, one end of the left clamp and the right clamp are respectively rotatably mounted on the wall of the seedling clamp tube through a rotating shaft, the rotating shaft radially extends into the seedling clamp tube and is fixedly connected with a rice clamp support foot; the pivot is fixedly connected with a plurality of cams corresponding to the rice clamps one by one, the cams are located in the seedling clamp tube, the rice clamp support feet are elastically pressed against cam surfaces on both sides of the cams through springs, and the cam surfaces control the opening and closing of the rice clamp by driving the rice clamp support feet to swing.

[0009] Among them, the seedling planting mechanism is a duckbill type seedling planting mechanism, which includes two transplanting discs, a plurality of transplanters arranged between the two transplanting discs, and an eccentric disc arranged outside a transplanting disc, the two transplanting discs are mounted on a central axis and driven to rotate by the central axis, the central axis is rotatably mounted on a fixed third bracket, and the third bracket is fixed to the frame; the radial edges of the two transplanting discs are respectively provided with a plurality of open shaft grooves along the circumferential direction, and the two ends of the transplanter are respectively rotatably mounted in the open shaft grooves corresponding to the two transplanting discs through a hanging cup shaft; the radial edge of the eccentric disc is provided with a plurality of open shaft grooves corresponding to the number of the open shaft grooves The same connecting arm, one end of the connecting arm is rotatably connected to the eccentric disc, and the other end is drivingly connected to the hanging cup shaft rotatably installed in the open shaft groove of the transplanting disc. The eccentric disc is provided with a central circular hole, and the third bracket is provided with a plurality of centering rollers. The eccentric disc is rotatably supported on the plurality of centering rollers through the central circular hole, and the central axis axially passes through the central circular hole. When the transplanting disc rotates, the eccentric disc rotates around its rotation center driven by one of the transplanting discs, so that under the joint action of the eccentric disc and the transplanting disc, each of the transplanters always keeps an unchanged posture and rotates downward with the transplanting disc.

[0010] Wherein, the central shaft is connected to the ground wheel through a second transmission device, and the first transmission device is synchronized with the second transmission device.

[0011] Wherein, the transplanter includes a hanging cup and a duckbill opening and closing piece assembly, the duckbill opening and closing piece assembly includes two symmetrical duckbill opening and closing pieces, the two duckbill opening and closing pieces are respectively hinged to a hinge shaft and connected by a reset spring, the hinge shaft radially passes through the hanging cup shaft, and when not driven, the two duckbill opening and closing pieces are in a snap-fitting state under the spring tension of the reset spring, the hanging cup is fixed to the hanging cup shaft and placed in the duckbill opening and closing piece assembly; the two duckbill opening and closing pieces are respectively provided with duckbill opening and closing wheels, and a duckbill opening and closing convex plate is provided at a predetermined position on the inner side of the transplanting disc, when the transplanting disc rotates to make the duckbill opening and closing wheel contact and move relative to the duckbill opening and closing convex plate, the duckbill opening and closing convex plate squeezes the duckbill opening and closing wheel, thereby driving the duckbill opening and closing piece to overcome the elastic tension of the reset spring and open.

[0012] Wherein, the duckbill opening and closing convex plate is an arc-shaped plate, and the side of the arc-shaped plate is a boss with a gradually changing height, and the boss is used to squeeze the duckbill opening and closing wheel to open the duckbill opening and closing piece.

[0013] After adopting the above technical solution, the beneficial effects of the present invention are:

[0014] The seedling transplanter disclosed in the present invention comprises a seedling delivery mechanism, a seedling clamping mechanism and a seedling planting mechanism. The seedling delivery mechanism is driven by a motor and is provided with a scale plate. A plurality of notches are provided around the scale plate. When the notches are rotated to the sensing area of ​​a first sensor, the first sensor sends a signal to stop the motor and end the seedling delivery. Corresponding to the seedling delivery mechanism, the seedling clamping mechanism comprises a seedling clamping cylinder rotatably mounted on a pivot. The seedling clamping cylinder is connected to a ground wheel through a first transmission device. The seedling clamping cylinder is provided with a plurality of pairs of seedling clamps. When the seedling clamping cylinder rotates one circle, each pair of the seedling clamps successively clamps and drops a seedling in a pot. One end of the seedling clamping cylinder is connected with a signal disk. A sensing part is provided on the signal disk. When the sensing part rotates one circle to the sensing area of ​​the second sensor, the second sensor sends a signal to make the motor rotate to deliver the seedling. The present invention adopts mechanical seedling clamping and electric seedling delivery, which is fast and accurate, simple in structure, low in production cost, and not easy to fail during operation.

[0015] In the present invention, the seedling planting mechanism is a duckbill type seedling planting mechanism. Under the joint action of the eccentric disc and the transplanting disc, each transplanter always keeps an unchanged posture and rotates downward with the transplanting disc. When not driven, under the spring tension of the reset spring, the two duckbill opening and closing pieces are in a buckled state. When the transplanting disc rotates to make the duckbill opening and closing wheel contact and move relatively with the duckbill opening and closing convex plate, the duckbill opening and closing convex plate squeezes the duckbill opening and closing wheel, thereby driving the duckbill opening and closing piece to overcome the elastic tension of the reset spring and open. The duckbill type seedling planting mechanism is adopted, so that the pot seedling transplanter can be generally applied to dryland crops such as vegetables, cotton, and tobacco. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of an embodiment of a pot seedling transplanter of the present invention;

[0017] Figure 2 yes Figure 1 The schematic diagram of the structure after removing the seedling tray frame;

[0018] Figure 3 yes Figure 2 Schematic diagram of the structure of the central seedling delivery mechanism and the seedling clamping mechanism;

[0019] Figure 4 yes Figure 2 Schematic diagram of the three-dimensional structure of the middle seedling clamping mechanism;

[0020] Figure 5 yes Figure 2 A front view of

[0021] Figure 6 yes Figure 5 Sectional view at AA in the middle;

[0022] Figure 7 yes Figure 6Sectional view at the middle BB;

[0023] Figure 8 yes Figure 2 Schematic diagram of the three-dimensional structure of the seedling planting mechanism;

[0024] Fig. 9 yes Figure 8 The front view of the structure of the seedling planting mechanism shown in the figure after removing part of the third bracket;

[0025] Fig.10 yes Figure 8 A schematic diagram of the three-dimensional structure of the seedling planting mechanism in the middle part;

[0026] In the figure: 1, frame; 11, ground wheel; 12, central transmission box; 13, soil covering transmission box; 14, soil covering device; 15, seedling tray frame; 16, soil cultivation device; 2, seedling delivery mechanism; 20, first bracket; 21, driving shaft; 22, driven shaft; 23, motor; 24, first sensor; 25, dial; 251, notch; 26, first driving sprocket; 27, first chain; 28, dial rod; 29, seedling tray guide rod; 3, seedling clamping mechanism; 30, second bracket; 31, seedling clamping tube; 32, pivot; 33, signal disk; 33 1. Sensing part; 34A, left clamp; 34B, right clamp; 34C, spring; 34D, rotating shaft; 35, driving sprocket; 36, second sensor; 37, cam; 38, seedling clamp support foot; 39, roller; 4, seedling guide tube; 5, seedling planting mechanism; 50, third bracket; 51, eccentric disc; 52, transplanting disc; 53, central axis; 54, centering roller; 55, hanging cup; 56A, duckbill opening and closing piece; 56B, duckbill opening and closing wheel; 56C, hanging cup shaft; 56D, hinged shaft; 57, connecting arm; 58, duckbill opening and closing convex plate. DETAILED DESCRIPTION

[0027] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0028] like Figure 1 and Figure 2 As shown in the figure, a seedling transplanter is provided, wherein a seedling delivery mechanism 2, a seedling clamping mechanism 3 and a seedling planting mechanism 5 are installed on a frame 1, wherein the seedling clamping mechanism 3 clamps the seedlings delivered by the seedling delivery mechanism 2 and throws them into a seedling guide tube 4, and the seedlings fall from the seedling guide tube 4 into the seedling planting mechanism 5, and when the seedling planting mechanism 5 rotates to a suitable position, the seedlings are planted in the soil, and the seedling guide tube 4 is fixed to the frame 1. A seedling tray rack 15 for holding seedling trays is also installed on the frame 1, Figure 2The main structure of the seedling transplanter is shown after the seedling tray frame 15 is removed. The power of the traction device is transmitted to the central transmission box 12, and then the power is transmitted to the soil covering transmission box 13. The soil covering transmission box 13 drives the soil covering device 14 to rotate and press the soil on the plastic film. The seedling planting mechanism 5 adopts a duckbill seedling planting mechanism. The duckbill rotates to the lowest point and is inserted into the soil 7-8 cm. When the duckbill passes the lowest point, it opens its mouth and puts the seedling in the soil. Then the soil is cultivated by the soil cultivating device 16. The specific structure and working principle of the duckbill seedling planting mechanism will be described in detail later.

[0029] like Figure 3 As shown, the seedling delivery mechanism 2 includes a first bracket 20 fixed to the frame 1, and a chain transmission device for driving the seedling pot tray to move is installed on the first bracket 20. The driving shaft 21 of the chain transmission device is driven by a motor 23, and a dial 25 is provided at one end of the driven shaft 22 of the chain transmission device. A plurality of notches 251 are opened around the dial 25. A first sensor 24 for sensing the notches 251 is fixed to the first bracket 20. When the notch 251 rotates to the sensing area of ​​the first sensor 24, the first sensor 24 sends a signal to stop the motor 23 to end one seedling delivery. The chain transmission device includes a driving shaft 21 and a driven shaft 22, which are rotatably mounted on the first bracket 20, and the two ends of the driving shaft 21 are respectively provided with a first driving sprocket 26 and a second driving sprocket, and the two ends of the driven shaft 22 are respectively provided with a first driven sprocket and a second driven sprocket, and a first chain 27 is wound between the first driving sprocket 26 and the first driven sprocket, and a second chain is wound between the second driving sprocket and the second driven sprocket, and a dial rod 28 is connected between the first chain 27 and the second chain, and the first bracket 20 is also provided with a seedling tray guide rod 29 for turning the seedling tray. The seedling tray is composed of multiple rows of pot holes, and the dial rod 28 is stuck in the groove between the two rows of pot holes to drive the seedling tray. When the seedling tray moves to the vicinity of the driven shaft 22, the seedling tray guide rod 29 is used to turn the seedling tray.

[0030] The seedling clamping mechanism 3 comprises a second bracket 30 fixed to the frame 1, the second bracket 30 is fixedly provided with a pivot 32, the pivot 32 is rotatably mounted with a seedling clamping tube 31, and the seedling clamping tube 31 is transmission-connected to the ground wheel 11 through a first transmission device.

[0031] like Figure 3As shown, the seedling clamping tube 31 is equipped with multiple pairs of seedling clamps. When the seedling clamping tube 31 rotates one circle, each pair of the seedling clamps successively clamps and drops one seedling in a pot. One end of the seedling clamping tube 31 is connected to a signal disk 33, on which a sensing part 331 is provided. The second bracket 30 is provided with a second sensor 36. When the sensing part 331 rotates one circle to the sensing area of ​​the second sensor 36, the second sensor 36 sends a signal to make the motor 23 rotate to send the seedling. A transmission sprocket 35 is fixedly installed on the seedling clamping tube 31, and the transmission sprocket 35 is a part of the first transmission device.

[0032] like Figures 4 to 6 As shown, the rice clamp includes a left clamp 34A and a right clamp 34B, one end of which is rotatably mounted on the wall of the seedling clamp tube 31 through a rotating shaft 34D, and the rotating shaft 34D extends radially into the seedling clamp tube 31 and is fixedly connected with a rice clamp support leg 38. The pivot 32 is fixedly connected with a plurality of cams 37 corresponding to the rice clamps, and the cams 37 are located in the seedling clamp tube 31. The rice clamp support leg 38 is elastically pressed against the cam surfaces on both sides of the cam 37 by a spring 34C, and the cam surface controls the opening and closing of the rice clamp by driving the rice clamp support leg 38 to swing. The spring 34C is a compression spring, and the compression spring is clamped between the left clamp 34A and the right clamp 34B. The rice clamp support leg 38 is provided with a roller 39 to reduce friction.

[0033] like Figure 8 to Figure 10 As shown, the seedling planting mechanism 5 is a duckbill type seedling planting mechanism.

[0034] The duckbill seedling planting mechanism includes two transplanting discs 52, a plurality of transplanters arranged between the two transplanting discs 52, and an eccentric disc 51 arranged outside a transplanting disc 52. The two transplanting discs 52 are installed on a central shaft 53 and driven to rotate by the central shaft 53. The central shaft 53 is rotatably installed on a third bracket 50, and the third bracket 50 is fixed to the frame 1.

[0035] like Fig.10As shown, the radial edges of the two transplanting discs 52 are respectively provided with a plurality of open shaft grooves along the circumferential direction, and the two ends of the transplanter are rotatably mounted in the open shaft grooves corresponding to the two transplanting discs 52 through the hanging cup shafts 56C; the radial edge of the eccentric disc 51 is provided with connecting arms 57 with the same number as the open shaft grooves, one end of the connecting arm 57 is rotatably connected to the eccentric disc 51, and the other end is drivingly connected to the hanging cup shaft 56C rotatably mounted in the open shaft groove of the transplanting disc 52. A central circular hole is provided, and the third bracket 50 is provided with a plurality of centering rollers 54. The eccentric disk 51 is rotatably supported on the plurality of centering rollers 54 through the central circular hole. The central axis 53 axially passes through the central circular hole, so that when the transplanting disk 52 rotates, the eccentric disk 51 rotates around its rotation center driven by one of the transplanting disks 52. Therefore, under the joint action of the eccentric disk 51 and the transplanting disk 52, each of the transplanters always keeps an unchanged posture and rotates downward with the transplanting disk 52.

[0036] The central shaft 53 is in transmission connection with the ground wheel 11 via a second transmission device, and the first transmission device is synchronized with the second transmission device.

[0037] The transplanter includes a hanging cup 55 and a duckbill opening and closing piece assembly, wherein the duckbill opening and closing piece assembly includes two symmetrical duckbill opening and closing pieces 56A, the two duckbill opening and closing pieces 56A are respectively hinged to a hinge shaft 56D and connected through a reset spring (not shown in the figure), and the hinge shaft 56D radially passes through the hanging cup shaft 56C. When not driven, the two duckbill opening and closing pieces 56A are in a buckled state under the spring tension of the reset spring, and the hanging cup 55 is fixed to the hanging cup shaft 56C and placed in the duckbill opening and closing piece assembly. The two duckbill opening and closing plates are respectively provided with duckbill opening and closing wheels 56B, and a duckbill opening and closing convex plate 58 is provided at a predetermined position on the inner side of the transplanting disc 52. When the transplanting disc 52 rotates to make the duckbill opening and closing wheel 56B contact and move relative to the duckbill opening and closing convex plate 58, the duckbill opening and closing convex plate 58 squeezes the duckbill opening and closing wheel 56B, thereby driving the duckbill opening and closing plate 56A to overcome the elastic pulling force of the return spring and open.

[0038] The duckbill opening and closing convex plate 58 is an arc-shaped plate, and the side surface of the arc-shaped plate is a boss with a gradually changing height. The boss is used to squeeze the duckbill opening and closing wheel 56B to open the duckbill opening and closing piece 56A.

[0039] The working principle of the seedling pot transplanter disclosed by the present invention is as follows:

[0040] The seedling delivery mechanism 2 is driven by a motor 23 and is provided with a scale plate 25. A plurality of notches 251 are provided around the scale plate 25. When the notches 251 rotate to the sensing area of ​​the first sensor 24, the first sensor 24 sends a signal to stop the motor 23 to end the seedling delivery. Corresponding to the seedling delivery mechanism 2, the seedling clamping mechanism 3 includes a seedling clamping tube 31 rotatably mounted on a pivot 32. The seedling clamping tube 31 is transmission-connected to the ground wheel 11 through a first transmission device. The seedling clamping tube 31 is provided with a plurality of pairs of seedling clamps. When the seedling clamping tube 31 rotates one circle, each pair of the seedling clamps successively clamps and drops a seedling in a pot. One end of the seedling clamping tube 31 is connected to a signal plate 33. The signal plate 33 is provided with a sensing part 331. When the sensing part 331 rotates one circle to the sensing area of ​​the second sensor, the second sensor 36 sends a signal to rotate the motor 23 to deliver the seedling. The present invention adopts mechanical seedling clamping and electric seedling delivery, which is fast and accurate, simple in structure, low in production cost, and not prone to failure during operation.

[0041] The seedling planting mechanism 5 of the present invention is a duckbill seedling planting mechanism. Under the joint action of the eccentric disc 51 and the transplanting disc 52, each transplanter always keeps an unchanged posture and rotates downward with the transplanting disc 52. When not driven, under the spring tension of the return spring, the two duckbill opening and closing pieces 56A are in a buckled state. When the transplanting disc 52 rotates to make the duckbill opening and closing wheel 56B contact and move relative to the duckbill opening and closing convex plate 58, the duckbill opening and closing convex plate 58 squeezes the duckbill opening and closing wheel 56B, and then drives the duckbill opening and closing piece 56A to overcome the elastic tension of the return spring and open. The duckbill seedling planting mechanism is adopted, so that the pot seedling transplanter can be generally applied to dryland crops such as vegetables, cotton, and tobacco.

[0042] The present invention is not limited to the above embodiments, and all improvements based on the concept, principle, structure and method of the present invention will fall within the protection scope of the present invention.

Claims

1. A seedling pot transplanter, comprising: A frame, on which a seedling delivery mechanism, a seedling clamping mechanism and a seedling planting mechanism are installed, the seedling clamping mechanism clamps the seedlings delivered by the seedling delivery mechanism and throws them into a seedling guide tube, the seedlings fall from the seedling guide tube into the seedling planting mechanism, when the seedling planting mechanism rotates to a suitable position, the seedlings are planted in the soil, and the seedling guide tube is fixed to the frame; characterized in that The seedling delivery mechanism comprises a first bracket fixed to the frame, a chain transmission device driving the seedling pot tray to move is installed on the first bracket, a driving shaft of the chain transmission device is driven by a motor, a dial is arranged at one end of the driven shaft of the chain transmission device, a plurality of notches are arranged around the dial, a first sensor sensing the notches is fixed to the first bracket, and when the notch is rotated to the sensing area of ​​the first sensor, the first sensor sends a signal to stop the motor and end one seedling delivery; The seedling clamping mechanism includes a second bracket fixed to the frame, the second bracket is fixedly provided with a pivot, the pivot is rotatably installed with a seedling clamping tube, the seedling clamping tube is connected to the ground wheel through a first transmission device, the seedling clamping tube is installed with multiple pairs of seedling clamps, the seedling clamping tube rotates one circle, each pair of the seedling clamps successively clamps and drops a seedling in a pot; one end of the seedling clamping tube is connected to a signal disk, the signal disk is provided with a sensing part, the second bracket is provided with a second sensor, when the sensing part rotates one circle to the sensing area of ​​the second sensor, the second sensor sends a signal to make the motor rotate to deliver the seedlings.

2. The seedling pot transplanter according to claim 1, characterized in that: The chain transmission device includes the driving shaft and the driven shaft, and the driving shaft and the driven shaft are rotatably installed on the first bracket. The two ends of the driving shaft are respectively provided with a first driving sprocket and a second driving sprocket, and the two ends of the driven shaft are respectively provided with a first driven sprocket and a second driven sprocket, a first chain is wound between the first driving sprocket and the first driven sprocket, a second chain is wound between the second driving sprocket and the second driven sprocket, and a dial rod is connected between the first chain and the second chain.

3. The seedling transplanter according to claim 2, characterized in that: The first bracket is equipped with a seedling tray guide rod for guiding the seedling tray to flip.

4. The seedling transplanter according to claim 1, characterized in that: The rice seedling clamp comprises a left clamping piece and a right clamping piece, one end of the left clamping piece and the right clamping piece are respectively rotatably mounted on the cylinder wall of the seedling clamping tube through a rotating shaft, the rotating shaft radially extends into the seedling clamping tube and is fixedly connected with a rice seedling clamp support foot; the pivot is fixedly connected with a plurality of cams corresponding to the rice seedling clamps one by one, the cams are located in the seedling clamping tube, the rice seedling clamp support feet are pressed against cam surfaces on both sides of the cams through spring elasticity, and the cam surfaces control the opening and closing of the rice seedling clamp by driving the rice seedling clamp support feet to swing.

5. The seedling transplanter according to claim 4, characterized in that: The spring is a compression spring, and the compression spring is clamped between the left clamping piece and the right clamping piece.

6. The seedling transplanter according to claim 1, characterized in that: The seedling planting mechanism is a duckbill type seedling planting mechanism.

7. The seedling transplanter according to claim 6, characterized in that: The duckbill seedling planting mechanism includes two transplanting discs, a plurality of transplanters arranged between the two transplanting discs, and an eccentric disc arranged outside a transplanting disc. The two transplanting discs are mounted on a central axis and driven to rotate by the central axis. The central axis is rotatably mounted on a third bracket, and the third bracket is fixed to the frame. The radial edges of the two transplanting discs are respectively provided with a plurality of open shaft grooves along the circumferential direction, and the two ends of the transplanter are respectively rotatably mounted in the open shaft grooves corresponding to the two transplanting discs through a hanging cup shaft. The radial edge of the eccentric disc is provided with connecting arms with the same number as the open shaft grooves. One end of the connecting arm is rotatably connected to the eccentric disc, and the other end is drivingly connected to the hanging cup shaft rotatably installed in the open shaft groove of the transplanting disc. The eccentric disc is provided with a central circular hole, and the third bracket is provided with a plurality of centering rollers. The eccentric disc is rotatably supported on the plurality of centering rollers through the central circular hole, and the central axis axially passes through the central circular hole. When the transplanting disc rotates, the eccentric disc rotates around its rotation center driven by one of the transplanting discs, so that under the joint action of the eccentric disc and the transplanting disc, each of the transplanters always keeps an unchanged posture and rotates downward with the transplanting disc.

8. The seedling transplanter according to claim 7, characterized in that: The central shaft is transmission-connected to the ground wheel via a second transmission device, and the first transmission device is synchronized with the second transmission device.

9. The seedling pot transplanter according to claim 7, characterized in that: The transplanter includes a hanging cup and a duckbill opening and closing piece assembly, the duckbill opening and closing piece assembly includes two symmetrical duckbill opening and closing pieces, the two duckbill opening and closing pieces are respectively hinged to a hinge shaft and connected by a reset spring, the hinge shaft radially passes through the hanging cup shaft, and when not driven, the two duckbill opening and closing pieces are in a snap-fitting state under the spring tension of the reset spring, the hanging cup is fixed to the hanging cup shaft and placed in the duckbill opening and closing piece assembly; the two duckbill opening and closing pieces are respectively provided with duckbill opening and closing wheels, and a duckbill opening and closing convex plate is provided at a predetermined position on the inner side of the transplanting disc, and when the transplanting disc rotates to make the duckbill opening and closing wheel contact and move relative to the duckbill opening and closing convex plate, the duckbill opening and closing convex plate squeezes the duckbill opening and closing wheel, thereby driving the duckbill opening and closing piece to overcome the elastic tension of the reset spring and open.

10. The seedling pot transplanter according to claim 9, characterized in that: The duckbill opening and closing convex plate is an arc-shaped plate, and the side surface of the arc-shaped plate is a boss with a gradually changing height, and the boss is used to squeeze the duckbill opening and closing wheel to open the duckbill opening and closing piece.

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