Mechanical full-automatic seedling taking device for pepper transplanter and use method thereof

Abstract

The present application relates to a kind of mechanical full-automatic seedling taking device for pepper transplanter and use method, including rack, installation frame I sliding on rack and installation frame II articulated below installation frame I, also including sliding drive mechanism of driving installation frame I forward and backward sliding and seedling pulling drive mechanism of driving the front end of installation frame II up and down swing;The front end of installation frame II is connected with multiple power transmission gears engaged in sequence, also including multiple jaw assemblies, the jaw assembly includes two gear jaws symmetrical left and right and gear tension spring connected between two gear jaws, two gear jaws are respectively fixed in the front end of adjacent two power transmission gears;Rack is equipped with one-way rotation seedling clamping one-way gear and one-way rotation seedling releasing one-way gear, the power transmission gear of one end is engaged with seedling clamping one-way gear when installation frame I moves to front dead point, the power transmission gear of one end is engaged with seedling releasing one-way gear when installation frame I moves to rear dead point.

Description

Technical Field

[0001] This invention relates to the field of seedling picking device technology, specifically to a mechanical fully automatic seedling picking device for chili transplanters and its usage method. Background Technology

[0002] my country is the world's largest producer and consumer of vegetables, with its vegetable industry second only to grain cultivation. Vegetables produced through tray seedling cultivation and transplanting account for over 60% of total vegetable production. However, currently, transplanting is still largely manual or semi-automatic, with transplanting machines only performing the planting action and failing to achieve true automation. Manual seedling handling is labor-intensive, inefficient, costly, and has high rates of seedling damage and loss, making it uneconomical for large-scale cultivation. Transplanting tray-grown vegetables requires seedling handling, so an automatic seedling handling device is needed in mechanized vegetable transplanting. However, most current automatic seedling handling devices in vegetable transplanting machinery are pneumatically controlled, resulting in poor stability, susceptibility to damage, high failure rates, complex structures, difficult maintenance, and high maintenance costs. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a fully automatic mechanical seedling picking device and its usage method for chili transplanters. This device enables horizontal seedling picking and vertical, fixed-point, and orderly seedling placement during the transplanting process. The designed gear-clamp linkage mechanical structure ensures stable operation during the seedling clamping and delivery process, effectively reducing the failure rate and seedling damage, and improving transplanting efficiency.

[0004] This invention is achieved through the following technical solution: a mechanical fully automatic seedling-picking device for a chili transplanter, comprising a frame, a mounting frame I slidably connected to the frame, and a mounting frame II hinged below the mounting frame I; a sliding drive mechanism for driving the mounting frame I to slide back and forth, and a seedling-pulling drive mechanism for driving the front end of the mounting frame II to swing up and down; the front end of the mounting frame II is axially connected to a plurality of power transmission gears arranged horizontally and meshing sequentially, and also includes a plurality of gripper assemblies arranged horizontally, each gripper assembly including two symmetrical gear grippers and a gear tensioning spring connected between the two gear grippers, the two gear grippers being respectively fixed to the front ends of two adjacent power transmission gears; the frame is equipped with a unidirectional rotating seedling-clamping unidirectional gear and a unidirectional rotating seedling-releasing unidirectional gear; when the mounting frame I moves to the front stop point, one end of the power transmission gear meshes with the seedling-clamping unidirectional gear, and when the mounting frame I moves to the rear stop point, one end of the power transmission gear meshes with the seedling-releasing unidirectional gear.

[0005] In this design, the sliding drive mechanism propels mounting frames I and II forward until the power transmission gear meshes with the seedling clamping one-way gear. While the power transmission gear is moving forward, the seedling clamping one-way gear cannot rotate. At this point, the power transmission gear rotates, and the two gear grippers open against the tension of the gear tension spring. Then, mounting frames I and II retract. As the power transmission gear retracts, the seedling clamping one-way gear can rotate, causing the two gear grippers to close and clamp, completing the seedling clamping operation. After clamping, the seedling pulling drive mechanism drives the front end of mounting frame II to swing upward, causing the gear grippers to move upward, completing the seedling pulling operation. Mounting frames I and II continue to retract until the power transmission gear meshes with the seedling releasing one-way gear. While the power transmission gear is retracting, the seedling releasing one-way gear cannot rotate. At this point, the power transmission gear rotates, and the two gear grippers open against the tension of the gear tension spring, completing the seedling releasing operation.

[0006] As an optimization, the sliding drive mechanism includes a drive shaft I horizontally connected to the frame and a propulsion arm power input shaft vertically connected to the frame. The drive shaft I drives the propulsion arm power input shaft to rotate via a propulsion input gear set. A primary propulsion arm connecting rod is fixedly connected to the propulsion arm power input shaft. The end of the primary propulsion arm connecting rod away from the propulsion arm power input shaft is hinged to one end of a secondary propulsion arm connecting rod, and the other end of the secondary propulsion arm connecting rod is hinged to the mounting frame I. In this design, the primary and secondary propulsion arm connecting rods constitute a crank-connecting rod mechanism, thereby driving the mounting frame I to move back and forth through the rotation of the propulsion arm power input shaft.

[0007] As an optimization, the sliding drive mechanism further includes a power input shaft vertically connected to the frame, which drives the transmission shaft I to rotate via a power input gear set. Power input is achieved by connecting the power input shaft to the power unit on the transplanter.

[0008] As an optimization, the seedling pulling drive mechanism includes a transmission shaft II coaxially fixed to the transmission shaft I, and a primary connecting rod for the seedling pulling arm fixed to the transmission shaft II. A seedling pulling arm shaft is fixed to the mounting frame II, and a tertiary connecting rod for the seedling pulling arm is fixed to the seedling pulling arm shaft. One end of the secondary connecting rod is hinged to the primary connecting rod, and the other end of the secondary connecting rod has a sliding groove. A shaft is fixed to the tertiary connecting rod for the seedling pulling arm and inserted into the sliding groove. The transmission shaft II drives the primary connecting rod for the seedling pulling arm to rotate, which in turn drives the secondary connecting rod for the seedling pulling arm to move back and forth. When the sliding groove moves to its end and contacts the shaft, it drives the tertiary connecting rod for the seedling pulling arm to swing upward, thereby realizing the upward swing of the front end of the mounting frame II.

[0009] As an optimization, the seedling-pulling arm shaft is coaxial with the hinge shaft of mounting frame I and mounting frame II. This converts the rotation of the seedling-pulling arm shaft into the swinging motion of mounting frame II.

[0010] As an optimization, a guide rail is fixedly connected to the frame, and a slider adapted to the guide rail is fixedly connected to the upper end of the mounting bracket I. In this design, the guide rail and slider enable the forward and backward sliding guidance of the mounting bracket I.

[0011] As an optimization, it also includes an upper arm and a lower arm for the mounting bracket connecting arm. The front end of the upper arm is hinged to the rear end of mounting bracket I, the rear end of the upper arm is hinged to the rear end of the lower arm, and the front end of the lower arm is hinged to the rear end of mounting bracket II. The upper and lower arms of the mounting bracket connecting arm limit the vertical swing of mounting bracket II.

[0012] As an optimization, the rear end of the lower arm of the mounting bracket connecting arm has a slot, and the rear end of the upper arm of the mounting bracket connecting arm is hinged in the slot. When the rear end of the upper arm of the mounting bracket connecting arm is stuck at the edge of the slot, the rear end of the mounting bracket II cannot continue to swing upward, thereby preventing the front end of the mounting bracket II from swinging downward, and keeping the power transmission gear in a horizontal state.

[0013] A method for using a fully automatic mechanical seedling harvesting device includes the following steps:

[0014] a. After the seedling tray is delivered to the designated position, the automatic seedling retrieval process is started. The sliding drive mechanism pushes the mounting frame I and mounting frame II forward until the power transmission gear meshes with the seedling clamping one-way gear. When the power transmission gear moves forward, the seedling clamping one-way gear cannot rotate. At this time, the power transmission gear rotates, and the two gear jaws open against the tension of the gear tension spring. Then the mounting frame I and mounting frame II move backward. When the power transmission gear moves backward, the seedling clamping one-way gear can rotate. Through the gear tension spring, the two gear jaws close and clamp, completing the seedling clamping operation.

[0015] b. After the seedling clamping operation is completed, the seedling pulling drive mechanism drives the front end of the mounting frame II to swing upward, thereby moving the gear gripper upward to realize the seedling pulling operation.

[0016] c. Mounting frame I and mounting frame II continue to move backward until the power transmission gear meshes with the seedling release one-way gear. The seedling release one-way gear cannot rotate when the power transmission gear moves backward. At this time, the power transmission gear rotates, and the two gear jaws open against the tension of the gear tension spring, completing the seedling release operation. After the seedling release is completed, mounting frame I and mounting frame II move forward to the initial position, and the two gear jaws close and clamp.

[0017] The beneficial effects of the present invention are as follows: The mechanical fully automatic seedling picking device and its usage method for chili transplanters of the present invention adopt a purely mechanical linkage gear gripper to change the whole tray of seedlings from the horizontal seedling picking state to the seedling placement preparation state. The gear gripper directly puts the vegetable pot seedlings into the planter of the transplanting mechanism, which can effectively reduce the operation procedures and save space.

[0018] This invention utilizes purely mechanical linkage to achieve precise and orderly seedling placement in rows. Employing a multi-link, multi-gear mechanical transmission system, it features a simple, stable, and reliable structure, enabling coordinated operations of seedling clamping and pot insertion. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention;

[0020] Figure 2 This is the main view of the present invention;

[0021] Figure 3 This is the left view of the present invention;

[0022] Figure 4 This is a bottom view of the present invention;

[0023] Figure 5 This is the present invention. Figure 2 Partial view at point A in the middle;

[0024] Figure 6 This is the present invention. Figure 2 Partial view at point D;

[0025] Figure 7 This is the present invention. Figure 4 Partial view at point B in the middle;

[0026] Figure 8 This is the present invention. Figure 4 Partial view at point C;

[0027] Figure 9 This is a schematic diagram of the three-stage linkage structure of the seedling pulling arm of the present invention;

[0028] Figure 10 This is a schematic diagram of the mounting bracket II structure of the present invention;

[0029] Figure 11 This is a schematic diagram of the mounting bracket I structure of the present invention;

[0030] Figure 12 This is a schematic diagram of the gear tension spring structure of the present invention;

[0031] Figure 13 This is a schematic diagram of the first-stage connecting rod structure of the propulsion arm of the present invention;

[0032] Figure 14 This is a schematic diagram of the gear gripper structure of the present invention;

[0033] Figure 15 This is a schematic diagram of the structure of guide rail I and guide rail II of the present invention;

[0034] Figure 16 This is a schematic diagram of the mounting bracket connecting shaft structure of the present invention;

[0035] As shown in the figure:

[0036] 1. Power input shaft; 2. Power input gear set; 3. Drive shaft I; 4. Drive shaft fixing block I; 5. Propulsion input gear set; 6. Drive shaft fixing block II; 7. Drive shaft II; 8. Seedling pulling arm first-stage connecting rod; 9. Seedling pulling arm second-stage connecting rod; 10. Seedling pulling arm third-stage connecting rod; 11. Seedling pulling arm shaft; 12. Mounting frame II; 13. Propulsion arm power input shaft; 14. Propulsion arm first-stage connecting rod; 15. Propulsion arm second-stage connecting rod; 16. Mounting frame I; 17. Mounting frame connecting shaft; 18. Power transmission gear; 19. Seedling clamping one-way gear; 20. Gear gripper; 21. Seedling releasing one-way gear; 22. Guide rail I; 23. Guide rail II; 24. Slider I; 25. Slider II; 26. Mounting frame connecting arm upper arm; 27. Mounting frame connecting arm lower arm; 28. Frame; 29. ​​Gear tension spring. Detailed Implementation

[0037] To clearly illustrate the technical features of this solution, the following detailed implementation method will be used to explain the solution.

[0038] like Figures 1-16 As shown, a fully automatic mechanical seedling taking device for a chili transplanter according to the present invention includes a frame 28, a mounting frame I16 that slides on the frame 28 from front to back, and a mounting frame II12 that is hinged below the mounting frame I16.

[0039] A guide rail is fixedly connected to the frame 28, and a slider adapted to the guide rail is fixedly connected to the upper end of the mounting bracket I16. Figure 4 As can be seen, guide rails I22 and II23 are installed below the frame plate and extend forward and backward. The mounting bracket I16 is installed on sliders I24 and II25 and can move in the rails in the forward and backward direction with the sliders.

[0040] Mounting frame II 12 is located below mounting frame I 16 and moves back and forth together with mounting frame I 16. Mounting frame I 16 and mounting frame II 12 are hinged by mounting frame connecting shaft 17 extending left and right, allowing the front end of mounting frame II 12 to swing up and down. Swinging upwards achieves seedling pulling.

[0041] It also includes a sliding drive mechanism for the drive mounting bracket I16 to slide back and forth, and a seedling pulling drive mechanism for the front end of the drive mounting bracket II12 to swing up and down.

[0042] The sliding drive mechanism includes a drive shaft I3 horizontally connected to the frame 28 and a propulsion arm power input shaft 13 vertically connected to the frame 28. The sliding drive mechanism also includes a power input shaft 1 vertically connected to the frame 28. The power input shaft 1 drives the drive shaft I3 to rotate via a power input gear set 2. Power is input through the power input shaft 1. The power input gear set 2 includes two bevel gears respectively fixed to the power input shaft 1 and the drive shaft I3, and power transmission is achieved through the transmission of the two bevel gears.

[0043] The drive shaft I3 extends to the left and right and is mounted on the top surface of the frame 28 through the drive shaft fixing block I4. The drive shaft I3 drives the propulsion arm power input shaft 13 to rotate through the propulsion input gear set 5. The propulsion input gear set 5 includes two bevel gears that are respectively fixed on the propulsion arm power input shaft 13 and the drive shaft I3. Power is transmitted through the transmission of the two bevel gears.

[0044] The upper end of the frame 28 is provided with a horizontal square frame plate. The propulsion arm power input shaft 13 passes vertically through the frame plate and is installed through bearings. The lower end of the propulsion arm power input shaft 13 is fixedly connected to the first-stage propulsion arm connecting rod 14. The first-stage propulsion arm connecting rod 14 is set horizontally and rotates with the propulsion arm power input shaft 13 on the horizontal plane. The end of the first-stage propulsion arm connecting rod 14 away from the propulsion arm power input shaft 13 is hinged to one end of the second-stage propulsion arm connecting rod 15. The other end of the second-stage propulsion arm connecting rod 15 is hinged to the mounting frame I 16. The above-mentioned hinge shafts are all set vertically. The first-stage propulsion arm connecting rod and the second-stage propulsion arm connecting rod form a crank-connecting rod mechanism, thereby driving the mounting frame I to move back and forth by rotating the propulsion arm power input shaft.

[0045] The seedling pulling drive mechanism includes a drive shaft II7 coaxially fixed to the drive shaft I3 and a seedling pulling arm primary connecting rod 8 fixed to the drive shaft II7. The drive shaft II7 extends to the left and right and is installed on the top surface of the frame 28 through the drive shaft fixing block II6. One end of the seedling pulling arm primary connecting rod 8 is fixed to the end of the drive shaft II7 away from the drive shaft I3.

[0046] like Figure 2 As shown, a seedling-pulling arm shaft 11 is fixedly connected to the mounting frame II 12, and the seedling-pulling arm shaft 11 is coaxial with the hinge shaft of the mounting frame I 16 and the mounting frame II 12. Therefore, the rotation of the seedling-pulling arm shaft 11 can cause the mounting frame II 12 to swing.

[0047] A third-stage connecting rod 10 is fixedly connected to the seedling pulling arm shaft 11. The third-stage connecting rod 10 is located above the seedling pulling arm shaft 11 and tilts forward. One end of the second-stage connecting rod 9 is hinged to the first-stage connecting rod 8, and the other end of the second-stage connecting rod 9 has a sliding groove. A shaft is fixedly connected to the third-stage connecting rod 10 and inserted into the sliding groove. The first-stage connecting rod 8 is rotated by the transmission shaft II 7, which in turn drives the second-stage connecting rod 9 to move back and forth. The shaft on the third-stage connecting rod 10 is in the sliding groove. When the end of the sliding groove does not contact the shaft, the third-stage connecting rod 10 will not swing up and down (or back and forth). When the sliding groove moves backward until its end contacts the shaft, it drives the third-stage connecting rod 10 to swing upward (and backward), thus realizing the upward swing of the front end of the mounting frame II.

[0048] Since drive shaft II7 is coaxially fixed to drive shaft I3, when the sliding drive mechanism drives the mounting frame I16 to move backward after clamping the seedling, the sliding long groove moves backward until its end contacts the insertion shaft. At this time, it drives the front end of the mounting frame II12 to swing upward to pull the seedling.

[0049] The front end of the mounting bracket II12 is axially connected to a plurality of power transmission gears 18 arranged horizontally and meshing sequentially, and also includes a plurality of gripper assemblies arranged horizontally. Each gripper assembly includes two symmetrical gear grippers 20 and a gear tension spring 29 connected between the two gear grippers 20. The two gear grippers 20 are respectively fixed to the front ends of two adjacent power transmission gears 18; Figure 4 As shown, this embodiment has a total of 15 power transmission gears 18 and 6 gripper assemblies. Each power transmission gear 18 can be equipped with a maximum of one gear gripper 20. Therefore, the rotation of any one power transmission gear 18 can drive all gripper assemblies to open and close synchronously.

[0050] The frame 28 is equipped with a one-way rotating seedling clamping gear 19 and a one-way rotating seedling releasing gear 21. The seedling clamping gear 19 and the seedling releasing gear 21 are respectively connected to the frame 28 via ratchet wheels. Figure 4 In the middle state, the seedling clamping one-way gear 19 and the seedling releasing one-way gear 21 can only rotate clockwise.

[0051] In this embodiment, the clamping one-way gear 19 is installed... Figure 4 At the lower position, when the mounting bracket I16 moves to the front stop point, the power transmission gear 18 at one end meshes with the clamping one-way gear 19. Therefore, in this embodiment, it is... Figure 4 The lowest power transmission gear 18 meshes with the clamping one-way gear 19. Since the clamping one-way gear 19 can only rotate clockwise, therefore... Figure 4 The bottommost power transmission gear 18-way Figure 4When the device moves to the left (i.e., moves forward in the working state), the clamping one-way gear 19 cannot rotate. Figure 4 The bottommost power transmission gear 18 rotates counterclockwise, thereby causing all the power transmission gears 18 to rotate together, thus opening the gripper assembly.

[0052] When the mounting bracket I16 moves to the rear stop point, the power transmission gear 18 at one end meshes with the seedling release one-way gear 21. In this embodiment, the seedling release one-way gear 21 is mounted on... Figure 4 The position above it, therefore in this embodiment Figure 4 The uppermost power transmission gear 18 meshes with the seedling release one-way gear 21. Since the seedling release one-way gear 21 can only rotate clockwise, therefore... Figure 4 The topmost power transmission gear 18-way Figure 4 When the middle moves to the right (that is, when it moves backward in the working state), the seedling release one-way gear 21 cannot rotate. Figure 4 The uppermost power transmission gear 18 rotates counterclockwise, thereby driving all the power transmission gears 18 to rotate together, thus opening the gripper assembly and releasing the seedlings.

[0053] When the end of the sliding groove does not contact the insert shaft, the weight of the front end of the mounting bracket II12 is greater than the weight of the rear end. Under the action of gravity, the front end swings downward while the rear end swings upward. In order to ensure the horizontal state of the power transmission gear, the upper arm 26 of the mounting bracket connecting arm and the lower arm 27 of the mounting bracket connecting arm are provided.

[0054] The front end of the upper arm 26 of the mounting bracket connecting arm is hinged to the rear end of the mounting bracket I 16, the rear end of the upper arm 26 of the mounting bracket connecting arm is hinged to the rear end of the lower arm 27 of the mounting bracket connecting arm, and the front end of the lower arm 27 of the mounting bracket connecting arm is hinged to the rear end of the mounting bracket II 12.

[0055] like Figure 5 As shown, the lower arm 27 of the mounting bracket connecting arm has a slot at its rear end, and the rear end of the upper arm 26 of the mounting bracket connecting arm is hinged within the slot. When the rear end of the upper arm of the mounting bracket connecting arm is engaged at the edge of the slot, the rear end of the mounting bracket II cannot continue to swing upward, thus preventing the front end of the mounting bracket II from swinging downward, keeping the power transmission gear in a horizontal state.

[0056] A method for using a fully automatic mechanical seedling harvesting device includes the following steps:

[0057] a. After the seedling tray is delivered to the designated position, the automatic seedling retrieval process is started. The sliding drive mechanism pushes the mounting frame I 16 and mounting frame II 12 forward until the power transmission gear 18 meshes with the seedling clamping one-way gear 19. When the power transmission gear 18 moves forward, the seedling clamping one-way gear 19 cannot rotate. At this time, the power transmission gear 18 rotates, and the two gear jaws 20 open against the tension of the gear tension spring 29. Then the mounting frame I 16 and mounting frame II 12 retract. When the power transmission gear 18 retracts, the seedling clamping one-way gear 19 can rotate. Through the gear tension spring 29, the two gear jaws 20 close and clamp, completing the seedling clamping operation.

[0058] b. After the seedling clamping operation is completed, the seedling pulling drive mechanism drives the front end of the mounting frame II12 to swing upward, thereby moving the gear gripper 20 upward to realize the seedling pulling operation.

[0059] c. Mounting frame I 16 and mounting frame II 12 continue to retreat until the power transmission gear 18 meshes with the seedling release one-way gear 21. When the power transmission gear 18 retreats, the seedling release one-way gear 21 cannot rotate. At this time, the power transmission gear 18 rotates, and the two gear jaws 20 open against the tension of the gear tension spring 29, completing the seedling release operation. After the seedling release is completed, mounting frame I 16 and mounting frame II 12 move forward to the initial position, and the two gear jaws 20 close and clamp.

[0060] Of course, the above description is not limited to the examples above. Technical features not described in this invention can be implemented by or using existing technology, and will not be repeated here. The above embodiments and drawings are only used to illustrate the technical solutions of this invention and are not intended to limit this invention. This invention has been described in detail with reference to preferred embodiments. Those skilled in the art should understand that any changes, modifications, additions or substitutions made by those skilled in the art within the scope of this invention do not depart from the spirit of this invention and should also fall within the scope of protection of the claims of this invention.

Claims

1. A fully automatic mechanical seedling-harvesting device for a chili transplanter, characterized in that: It includes a frame (28), a mounting bracket I (16) that slides back and forth on the frame (28), and a mounting bracket II (12) that is hinged below the mounting bracket I (16). It also includes a sliding drive mechanism that drives the mounting bracket I (16) to slide back and forth, and a seedling pulling drive mechanism that drives the front end of the mounting bracket II (12) to swing up and down. The front end of the mounting bracket II (12) is connected to a plurality of power transmission gears (18) arranged in the left and right and meshing in sequence, and also includes a plurality of gripper assemblies arranged in the left and right. The gripper assembly includes two gear grippers (20) symmetrically arranged in the left and right and a gear tension spring (29) connected between the two gear grippers (20). The two gear grippers (20) are respectively fixed to the front end of two adjacent power transmission gears (18). The frame (28) is equipped with a one-way rotating seedling clamping gear (19) and a one-way rotating seedling releasing gear (21). When the mounting frame I (16) moves to the front stop point, the power transmission gear (18) at one end meshes with the seedling clamping gear (19). When the mounting frame I (16) moves to the rear stop point, the power transmission gear (18) at one end meshes with the seedling releasing gear (21). The sliding drive mechanism includes a transmission shaft I (3) with a horizontal shaft connected to the frame (28) and a propulsion arm power input shaft (13) with a vertical shaft connected to the frame (28). The transmission shaft I (3) drives the propulsion arm power input shaft (13) to rotate through the propulsion input gear set (5). A first-stage propulsion arm connecting rod (14) is fixedly connected to the propulsion arm power input shaft (13). One end of the first-stage propulsion arm connecting rod (14) away from the propulsion arm power input shaft (13) is hinged to one end of the second-stage propulsion arm connecting rod (15), and the other end of the second-stage propulsion arm connecting rod (15) is hinged to the mounting frame I (16). The seedling pulling drive mechanism includes a transmission shaft II (7) coaxially fixed to the transmission shaft I (3) and a seedling pulling arm primary connecting rod (8) fixed to the transmission shaft II (7). A seedling pulling arm shaft (11) is fixed to the mounting frame II (12). A seedling pulling arm tertiary connecting rod (10) is fixed to the seedling pulling arm shaft (11). One end of the seedling pulling arm secondary connecting rod (9) is hinged to the seedling pulling arm primary connecting rod (8). The other end of the seedling pulling arm secondary connecting rod (9) has a sliding long groove. An insert shaft inserted into the sliding long groove is fixed to the seedling pulling arm tertiary connecting rod (10). The seedling pulling arm shaft (11) is coaxial with the hinge shaft of mounting frame I (16) and mounting frame II (12).

2. The fully automatic mechanical seedling-retrieving device for a chili transplanter according to claim 1, characterized in that: The sliding drive mechanism also includes a power input shaft (1) with its vertical shaft connected to the frame (28), and the power input shaft (1) drives the transmission shaft I (3) to rotate through the power input gear set (2).

3. The fully automatic mechanical seedling-retrieving device for a chili transplanter according to claim 1, characterized in that: A guide rail is fixedly connected to the frame (28), and a slider adapted to the guide rail is fixedly connected to the upper end of the mounting bracket I (16).

4. The fully automatic mechanical seedling-retrieving device for a chili transplanter according to claim 1, characterized in that: It also includes an upper arm (26) of the mounting bracket connecting arm and a lower arm (27) of the mounting bracket connecting arm. The front end of the upper arm (26) of the mounting bracket connecting arm is hinged to the rear end of the mounting bracket I (16). The rear end of the upper arm (26) of the mounting bracket connecting arm is hinged to the rear end of the lower arm (27) of the mounting bracket connecting arm. The front end of the lower arm (27) of the mounting bracket connecting arm is hinged to the rear end of the mounting bracket II (12).

5. A fully automatic mechanical seedling-picking device for a chili transplanter according to claim 4, characterized in that: The lower arm (27) of the mounting bracket connecting arm has a slot at its rear end, and the upper arm (26) of the mounting bracket connecting arm is hinged to the slot at its rear end.

6. A method of using the fully automatic mechanical seedling harvesting device according to any one of claims 1-5, characterized in that, Includes the following steps: a. After the seedling tray is delivered to the designated position, the automatic seedling retrieval process is started. The sliding drive mechanism pushes the mounting frame I (16) and mounting frame II (12) forward until the power transmission gear (18) meshes with the seedling clamping one-way gear (19). When the power transmission gear (18) moves forward, the seedling clamping one-way gear (19) cannot rotate. At this time, the power transmission gear (18) rotates, and the two gear jaws (20) open against the tension of the gear tension spring (29). Then the mounting frame I (16) and mounting frame II (12) move backward. When the power transmission gear (18) moves backward, the seedling clamping one-way gear (19) rotates. Through the gear tension spring (29), the two gear jaws (20) close and clamp, completing the seedling clamping operation. b. After the seedling clamping operation is completed, the seedling pulling drive mechanism drives the front end of the mounting frame II (12) to swing upward, thereby causing the gear clamp (20) to move upward and realize the seedling pulling operation; c. Mounting frame I (16) and mounting frame II (12) continue to move backward until the power transmission gear (18) meshes with the seedling release one-way gear (21). When the power transmission gear (18) moves backward, the seedling release one-way gear (21) cannot rotate. At this time, the power transmission gear (18) rotates, and the two gear jaws (20) open against the tension of the gear tension spring (29) to complete the seedling release operation. After the seedling release is completed, mounting frame I (16) and mounting frame II (12) move forward to the initial position, and the two gear jaws (20) close and clamp.

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