A device and method for transplanting seedlings on a reciprocating straight insertion type bare seedling film

Abstract

The application discloses a kind of reciprocating straight insertion type bare seedling film transplanting device and method, solve the problem of big broken film area in prior art film transplanting mechanism, with the beneficial effect of effectively controlling broken film area, specific scheme is as follows: a kind of reciprocating straight insertion type bare seedling film transplanting device, including rack assembly, rack assembly includes power source and device fixing part, power source is installed in device fixing part, device fixing part can be fixed in transplanting machine, the driving end of power source passes through device fixing part and is connected with the main rocker arm of connecting rod assembly, device fixing part, main rocker arm, auxiliary rocker arm and cross tie are connected rod assembly, the connecting place of auxiliary rocker arm with device fixing part is lower than the connecting place of main rocker arm with device fixing part, the end of main rocker arm away from device fixing part can generate rotary power between rack assembly, cross tie can realize translation and rotary motion in set plane, gear box assembly is arranged at cross tie.

Description

Technical Field

[0001] This invention relates to the field of agricultural machinery technology, and in particular to a reciprocating direct-insertion bare seedling transplanting device and method. Background Technology

[0002] The statements in this section are merely background information related to the present invention and do not necessarily constitute prior art.

[0003] Taking the transplanting of naked sweet potato seedlings under plastic film as an example, the current work of transplanting sweet potato seedlings under plastic film has gradually been replaced by automatic or semi-automatic machinery, which are mainly clamp-type and chain-type. Due to the special nature of the principle of mechanized transplanting devices and the complex agronomic requirements of sweet potato transplanting, clamp-type and chain-type transplanting devices have difficulty ensuring the quality of seedling planting when transplanting under plastic film. Due to the special nature of their structure, the chain-type transplanting device requires the ridge to be dredged before transplanting, so it cannot carry out the work of planting sweet potato seedlings under plastic film. However, the clamp-type has a smaller size of soil insertion part during the transplanting process, which can carry out transplanting under plastic film to a certain extent.

[0004] In addition, the two transplanting devices have unreasonable structural settings and poor stability. During operation, there is a problem of inaccurate cutting position. Because the seedling clamping mechanism on both sides needs to frequently pick up and put down the seedlings, it is easy to cause excessive disturbance of the opening of the transplanting film and the soil in the ridge. Excessive soil disturbance leads to poor soil covering effect and poor seedling planting effect. Summary of the Invention

[0005] To address the shortcomings of existing technologies, the purpose of this invention is to provide a reciprocating direct-insertion bare seedling transplanting device with a simple structure and high reliability. It solves the problems of excessively large film openings and poor soil backfilling effects while ensuring that the posture of the bare seedlings meets agronomic requirements after transplanting.

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

[0007] A reciprocating straight-insertion bare seedling transplanting device includes a frame assembly. The frame assembly includes a power source and a device fixing component. The power source is installed on the device fixing component, which can be fixed to the transplanter. The drive end of the power source passes through the device fixing component and is connected to the main rocker arm of the linkage assembly. The device fixing component, the main rocker arm, the auxiliary rocker arm, and the crossbar form a linkage assembly. The connection point between the auxiliary rocker arm and the device fixing component is lower than the connection point between the main rocker arm and the device fixing component. The end of the main rocker arm away from the device fixing component can generate rotational power with the frame assembly. The crossbar can achieve translational and rotational movement within a set plane. A gearbox assembly is provided at the crossbar. The gearbox assembly contains a meshing drive gear and a driven gear. The drive gear is connected to the main rocker arm, and the driven gear is connected to the reciprocating seedling insertion assembly. During rotation, the main rocker arm drives the drive gear to rotate, which in turn drives the driven gear to rotate, causing the reciprocating seedling insertion assembly to achieve reciprocating linear motion. When the main rocker arm moves to its lowest position, the reciprocating seedling insertion assembly extends to a longer state to insert the seedling.

[0008] As described above, in a reciprocating direct-insertion bare seedling film transplanting device, the gearbox assembly includes a gearbox housing, the driving gear and the driven gear are disposed inside the gearbox housing, the driven gear cooperates with a reverse double-helix reciprocating screw, one end of the reverse double-helix reciprocating screw passes through the gearbox housing and is provided with a limiting component, the limiting component cooperates with a screw rotation limiting seat fixed to the gearbox housing, and the other end of the reverse double-helix reciprocating screw is provided with a seedling insert.

[0009] As described above, in a reciprocating direct-insertion bare seedling transplanting device, the gearbox housing comprises two halves, each half of the gearbox housing having a first protrusion inside, the driven gear being supported by a bearing on the outside of the first protrusion so that the driven gear can rotate relative to the first protrusion, and a retaining ring is located at a position away from the other bearing.

[0010] As described above, in a reciprocating direct-insertion bare seedling transplanting device, a second protrusion is provided inside the gearbox housing. The height of the second protrusion is less than the height of the first protrusion. The driving gear is located between the two second protrusions. The inner diameter of the second protrusion is greater than the diameter of the driven shaft hole in the gearbox housing. The driven shaft passes through the driving gear and is connected to the driving gear to drive the rotation of the driving gear. The driven shaft is connected to the main rocker arm. A bearing is provided between the driven shaft and the second protrusion so that the driven gear can rotate relative to the second protrusion.

[0011] As described above, in a reciprocating straight-insertion bare seedling transplanting device, the keyway of the driven gear is provided with a lead screw slider, which is connected to the reverse double-helix reciprocating lead screw. When the driving gear drives the driven gear to rotate, the reverse double-helix reciprocating lead screw performs reciprocating linear motion due to the arrangement of the lead screw slider.

[0012] As described above, in a reciprocating straight-insertion bare seedling transplanting device, the lead screw rotation limiting seat includes a support seat connected to the gearbox housing, a support plate is provided on one side of the support seat, and a limiting rail is provided on the side of the support plate facing the driven shaft, and the limiting component is engaged in the limiting rail;

[0013] A limiting guide ring is provided at one end of the reverse double helix reciprocating screw, and one side of the limiting guide ring is connected to the limiting component.

[0014] As described above, in a reciprocating straight-insertion bare seedling transplanting device, both the main rocker arm and the auxiliary rocker arm are rotatably mounted on the same side of the device fixing component. The main rocker arm and the auxiliary rocker arm are spaced apart. The active bevel gear shaft passes through the main rocker arm and the horizontal tie rod. A power gear is mounted on one end of the active bevel gear shaft that passes through the main rocker arm. The power gear meshes with a gear ring, which is fixed to the device fixing component. The gear ring coincides with the axis of the drive end of the power source, and the radius of the gear ring is smaller than the length of the horizontal tie rod.

[0015] As described above, in a reciprocating straight-insertion bare seedling transplanting device, the active bevel gear shaft passes through one end of the horizontal tie rod and is connected to a gear transmission assembly, which is connected to the driven shaft.

[0016] As described above, in a reciprocating straight-insertion bare seedling transplanting device, the horizontal tie rod is connected to the gearbox assembly via a hinged shaft seat, the hinged shaft seat is provided with a hinged shaft, and the hinged shaft passes through the horizontal tie rod and the auxiliary rocker arm.

[0017] The installation angle of the device fixing component relative to the transplanter is replaceable to meet different needs.

[0018] Secondly, a reciprocating direct-insertion method for transplanting bare seedlings onto a film, employing the aforementioned reciprocating direct-insertion method for transplanting bare seedlings onto a film, includes the following:

[0019] The frame assembly is fixed to the transplanter;

[0020] The end of the main rocker arm away from the device fixing part can generate rotational power with the frame assembly, thereby driving the drive gear to rotate, which in turn drives the driven gear to rotate, and drives the reciprocating seedling insertion assembly to achieve reciprocating linear motion. While the connecting rod assembly completes one rotation, the reciprocating seedling insertion assembly completes one reciprocating axial motion. When the main rocker arm moves to the lowest position, the reciprocating seedling insertion assembly extends to a longer state to achieve seedling insertion on the film.

[0021] The beneficial effects of the present invention are as follows:

[0022] 1) The film transplanting device provided by this invention has a reasonable structure. The main rocker arm can generate rotational power between itself and the frame assembly. The horizontal tie rod can achieve translational and rotational movement within a set plane. A gearbox assembly is set at the horizontal tie rod. The gearbox assembly cooperates with the reciprocating seedling insertion assembly. When the main rocker arm moves to the lowest position, the reciprocating seedling insertion assembly extends to a longer state to insert the seedling. When transplanting bare seedlings on film, it can effectively solve problems such as poor stability, large film opening, large soil disturbance, and poor soil covering effect. It adopts a mechanized method to simulate the manual hand-held fork-shaped potato seedling planter to replace manual insertion of potato seedlings directly into the soil, thereby continuously planting bare seedlings to achieve a high transplanting quality of bare seedlings.

[0023] 2) Compared with other types of bare seedling transplanting devices (clamp type, chain clamp type, wheel type, etc.), the film transplanting device of the present invention has fewer components and a simpler principle and structure, so it is not easily damaged and has good stability during operation. Due to the special structural design of the device, compared with other types of transplanting devices such as clamp type and chain clamp, the seedling only moves in a single longitudinal plane and does not move laterally when transplanting into the soil. Moreover, only the small part of the seedling moves in the soil when it enters and exits the soil. That is, the working space is relatively small during the transplanting process. Therefore, the device has the advantages of small film opening, small soil disturbance and good soil covering effect during operation.

[0024] 3) The device fixing part in the film transplanting device of the present invention is used to connect with the existing transplanting machine. In this way, the overall installation angle can be adjusted by adjusting the position of the device fixing part, and the transmission ratio of the gears in the gearbox assembly and the length of each part can be adjusted to realize planting methods with different transplanting agronomic requirements such as "boat bottom shape", "hook shape", "horizontal shape" and "slanted shape" of bare seedlings.

[0025] 4) In this invention, the drive motor transmits continuous unidirectional rotational power to the main rocker arm. The main rocker arm drives the connecting rod assembly to perform translational rotational motion, and transmits the rotational torque generated by the meshing of the gear ring to the reciprocating screw assembly through the gear transmission assembly. The gear transmission assembly changes the rotational motion by 90° and transmits it to the gearbox assembly through the driven shaft. Inside the gearbox assembly, the rotational power is transmitted to the reverse double helix reciprocating screw through gear transmission. The reverse double helix reciprocating screw is rigidly connected to the seedling and performs reciprocating translational motion along its axis. The continuous rotational motion generated by the connecting rod assembly and the reciprocating axial translational motion generated by the reverse double helix reciprocating screw combine to form the required sweet potato seedling transplanting trajectory. The seedling inserts the bare sweet potato seedling into the soil along a certain transplanting trajectory, completing the transplanting of the sweet potato seedling. Attached Figure Description

[0026] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0027] Figure 1 This is a schematic diagram of the working state of a reciprocating straight-insertion bare seedling film transplanting device according to one or more embodiments of the present invention.

[0028] Figure 2 This is a schematic diagram of the structure of a reciprocating straight-insertion bare seedling film transplanting device according to one or more embodiments of the present invention. Figure 1 .

[0029] Figure 3 This is a schematic diagram of the structure of a reciprocating straight-insertion bare seedling film transplanting device according to one or more embodiments of the present invention. Figure 2 .

[0030] Figure 4 This is a schematic diagram of the structure of a reciprocating straight-insertion bare seedling film transplanting device according to one or more embodiments of the present invention. Figure 3 .

[0031] Figure 5 This is a schematic diagram of the frame assembly in a reciprocating straight-insertion bare seedling film transplanting device according to one or more embodiments of the present invention.

[0032] Figure 6 This is a schematic diagram of the connecting rod assembly in a reciprocating straight-insertion bare seedling film transplanting device according to one or more embodiments of the present invention. Figure 1 .

[0033] Figure 7 This is a schematic diagram of the connecting rod assembly in a reciprocating straight-insertion bare seedling film transplanting device according to one or more embodiments of the present invention. Figure 2 .

[0034] Figure 8 This is a schematic diagram of the gearbox assembly and the reciprocating screw seedling insertion assembly in a reciprocating straight-insertion bare seedling film transplanting device according to one or more embodiments of the present invention.

[0035] Figure 9 This is a schematic diagram of half of the gearbox housing in a reciprocating straight-insertion bare seedling film transplanting device according to one or more embodiments of the present invention.

[0036] Figure 10 This is a schematic diagram of the screw rotation limit seat in a reciprocating straight-insertion bare seedling film transplanting device according to one or more embodiments of the present invention.

[0037] Figure 11This is a front view of the lead screw rotation limit seat in a reciprocating straight-insertion bare seedling film transplanting device according to one or more embodiments of the present invention.

[0038] Figure 12 This is an enlarged schematic diagram of the engagement point between the gearbox assembly and the reciprocating screw seedling insertion assembly in a reciprocating straight-insertion bare seedling film transplanting device according to one or more embodiments of the present invention.

[0039] Figure 13 This is the present invention. Figure 12 A schematic diagram of section AA in the middle.

[0040] Figure 14 This is the present invention. Figure 12 A schematic diagram of the BB section.

[0041] Figure 15 This is the present invention. Figure 12 A schematic diagram of the CC section.

[0042] Figure 16 This is a schematic diagram of the reverse double-helix reciprocating screw in a reciprocating straight-insertion bare seedling film transplanting device according to one or more embodiments of the present invention.

[0043] Figure 17 This is a front view of the reverse double-helix reciprocating screw in a reciprocating straight-insertion bare seedling film transplanting device according to one or more embodiments of the present invention.

[0044] Figure 18 This is a schematic diagram of a bevel gear transmission assembly in a reciprocating straight-insertion bare seedling film transplanting device according to one or more embodiments of the present invention.

[0045] Figure 19 This is a front view of the bevel gear transmission assembly in a reciprocating straight-insertion bare seedling film transplanting device according to one or more embodiments of the present invention.

[0046] The diagram exaggerates the spacing or dimensions between parts to show their positions; the diagram is for illustrative purposes only.

[0047] Among them: 1. Frame assembly, 101. Drive motor, 102. Gear ring, 103. Device mounting plate;

[0048] 2. Linkage assembly, 201. Main rocker arm, 202. Secondary rocker arm, 203. Hinge bearing, 204. Tie rod;

[0049] 3. Gearbox assembly; 301. Gearbox housing; 3011. First protrusion; 3012. Second protrusion; 3013. Limiting plate; 302. Lead screw rotation limiting seat; 3021. Limiting track; 3022. Support seat; 3023. Support plate; 3024. Reinforcing plate; 303. Driving gear; 304. Driven gear; 305. Lead screw slider; 306. Driven shaft mounting hole; 307. Double helix lead screw mounting hole; 308. Bearing; 309. Snap ring;

[0050] 4. Reciprocating screw seedling insert assembly, 401. Limiting bearing wheel, 402. Limiting guide ring, 403. Fixing pin, 404. Reverse double helix reciprocating screw, 405. Seedling insert;

[0051] 5. Gear transmission assembly, 501. Drive gear, 502. Driven bevel gear shaft, 503. Driven bevel gear, 504. Driven free bevel gear, 505. Driven free bevel gear, 506. Driven bevel gear, 507. Driven shaft. Detailed Implementation

[0052] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the invention. Unless otherwise specified, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0053] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, unless otherwise expressly indicated by the invention, the singular form is also intended to include the plural form. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0054] As described in the background section, existing film transplanting devices have the problem of large soil penetration area. In order to solve the above technical problem, this invention proposes a reciprocating straight-insertion bare seedling film transplanting device.

[0055] Example 1

[0056] In a typical embodiment of the present invention, reference is made to Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, a reciprocating direct-insertion bare seedling transplanting device includes a frame assembly 1, a connecting rod assembly 2, a gearbox assembly 3, a reciprocating screw seedling insertion assembly 4, and a gear transmission assembly 5. The gearbox assembly 3, the reciprocating screw seedling insertion assembly 4, and the gear transmission assembly 5 are directly or indirectly installed on the horizontal tie rod 204 in the connecting rod assembly 2, and move with the horizontal tie rod 204 during operation. The device fixing component, the main rocker arm, the auxiliary rocker arm, and the horizontal tie rod form the connecting rod assembly, which is specifically a four-bar linkage assembly. The connection point between the auxiliary rocker arm and the device fixing component is lower than the connection point between the main rocker arm and the device fixing component, that is, the device fixing component is inclined downward.

[0057] Referring to Figure 5, the frame assembly 1 includes a power source, which is connected to a device fixing component. The device fixing component is specifically a device fixing plate 103, which is connected to the connecting rod assembly 2. The device fixing plate is fixedly connected to the gear ring 103. The power source can be a drive motor 101, or it can be a chain drive or other mechanical form. The drive motor 101 is fixedly installed on the periphery of the rotating hole of the main rocker arm 201 of the device fixing component by bolt connection. The gear ring 102 coincides with the output shaft axis of the drive motor 101, and the relative position of the gear ring and the drive motor is fixed.

[0058] It is easy to understand that during operation, the frame assembly 1 can directly or indirectly provide mounting points for other components and is fixedly installed at the corresponding positions on the transplanter without any relative movement between it and the transplanter.

[0059] refer to Figure 6 and Figure 7 As shown, the linkage assembly 2 includes a main rocker arm 201 and a secondary rocker arm 202. The drive end of the power source passes through the device fixing plate 103 and is connected to the main rocker arm 201. The device fixing plate is hinged to the secondary rocker arm 202. Both the main rocker arm 201 and the secondary rocker arm 202 can rotate relative to the device fixing plate 103. The front ends of the main rocker arm 201 and the secondary rocker arm 202 are respectively fixed to the corresponding positions of the device fixing plate 103 by hinge connection. A fixed distance is maintained between the rotation axes of the main rocker arm 201 and the secondary rocker arm 202. The main rocker arm 201 and the secondary rocker arm 202 are hinged together by a horizontal tie rod 204. The main rocker arm 201 and the horizontal tie rod 204 are fixed to the active bevel gear shaft 502 (the active bevel gear shaft provides an installation position for the gear transmission assembly 5) by bearings and snap rings. During the operation of the device, the main rocker arm 201 serves as a dynamic fulcrum, and its rotation axis serves as the main motion axis. Through the coordinated action with the auxiliary rocker arm 202, the horizontal tie rod 204 completes translational and rotational movements along a specific path in the longitudinal plane. This motion mode is the key to realizing the working principle of the entire mechanical transmission system.

[0060] In addition, a hinged bearing 203 is provided on the outside of the device fixing plate 103 relative to the horizontal tie rod 204. One end of the horizontal tie rod 204 is hinged to the auxiliary rocker arm 202 and the hinged shaft 2033 of the hinged bearing 203 through bearings, etc. The hinged bearing 203 provides a mounting and fixing point for the gearbox assembly 3. The hinged bearing is fixed or engaged with the gearbox assembly.

[0061] Specifically, the hinged shaft seat 203 includes a U-shaped seat 2031, the width of which is greater than or equal to the thickness of the gearbox housing 301, so that the U-shaped seat engages with the gearbox housing. Connecting bolts are provided through both sides of the U-shaped seat, and a protruding strip 2032 is provided inside the U-shaped seat, which can be engaged with the recess of the gearbox housing.

[0062] refer to Figure 8 As shown, the gearbox assembly 3 mainly consists of a gearbox housing 301, a lead screw rotation limit seat 302, a driving gear 303, a driven gear 304, and a lead screw slider 305. The gearbox housing 301 comprises two halves, with the driving gear 303 and driven gear 304 housed inside. The two halves of the gearbox housing are connected and fixed together by bolts. One side of the gearbox housing 301 is connected to the hinge shaft seat 203, and the other side is connected to the lead screw rotation limit seat 302. The hinge shaft seat 203 and the lead screw rotation limit seat 302 are arranged opposite to each other. The gearbox assembly 3 serves as the transmission core of the entire transplanting device, and is externally connected to the connecting rod assembly 2, the gear transmission assembly 5, and the reciprocating lead screw seedling insertion assembly 4, playing a crucial role in the entire device.

[0063] refer to Figure 9 As shown, the gearbox housing 301 is provided with a driven shaft mounting hole 306 and a double helix screw mounting hole 307. The driven shaft passes through the driven shaft mounting hole 306, and the reverse double helix reciprocating screw 404 passes through the double helix screw mounting hole 307.

[0064] refer to Figure 8 As shown, the distance between the lead screw rotation limit seat 302 and the driven shaft is set as follows, for reference. Figure 10As shown, the lead screw rotation limiting seat 302 includes a support seat 3022 connected to the gearbox housing 301. The structure of the support seat 3022 is the same as that of the hinged shaft seat. A support plate 3023 is provided on one side of the support seat 3022. The length of the support plate 3023 is longer than that of the driven shaft. A limiting rail 3021 is provided on the side of the support plate facing the driven shaft. A limiting component is provided at one end of the reverse double helix reciprocating lead screw that passes through the gearbox housing. The limiting component is engaged in the limiting rail 3021. Specifically, a limit bearing wheel 401 is selected, and a stiffening plate 3024 is set on the side of the support plate away from the limit track. The stiffening plate 3024 is connected to the support seat. The limit track of the screw rotation limit seat 302 is parallel to the axis of the reverse double helix reciprocating screw 404. The limit track is mainly responsible for limiting the rotational movement of the reverse double helix reciprocating screw 404 caused by the reaction force of the driven gear 304 and the screw slider 305, forcing the reverse double helix reciprocating screw 404 to only perform reciprocating translational movement along its axis.

[0065] refer to Figure 13 As shown, the driving gear 303 meshes with the driven gear 304. The driven gear 304 has a keyway with a lead screw slider 305. The driven gear 304 drives the lead screw slider 305 to rotate together along the double helix lead screw mounting hole 307 in the gearbox housing.

[0066] The gearbox housing consists of two halves, see reference. Figure 9 and Figure 15 As shown, each half of the gearbox housing has a first protrusion 3011 inside. The first protrusion 3011 is an annular protrusion, and a double helical screw mounting hole 307 is formed inside the first protrusion. The driven gear is supported by a bearing on the outside of the first protrusion so that the driven gear can rotate relative to the first protrusion. A bearing 308 and a snap ring 309 are provided between the driven gear 304 and the double helical screw mounting hole 307 of the gearbox 301. The driven gear 304 is supported by two bearings 308 inside the gearbox housing. The bearings are located on the driven gear. On both sides of 304, snap rings 309 are located at the bearings away from the other bearing. A lead screw slider 305 is installed at the center of the keyway of the driven gear 304. Because bearings are installed at both ends of the keyway, the lead screw slider 305 and the driven gear 304 cannot produce relative displacement. Rotary bearings are placed at the shaft end of the lead screw slider 305 and the center of the keyway of the driven gear 304, so that the lead screw slider 305 can rotate along the axis of the driven gear 304 together and can also rotate on its own axis.

[0067] It should be added that the irregular convex ball area on the outer side of the lead screw slider 305 is in close contact with the spiral groove surface of the reverse double helix reciprocating lead screw 404. When the device is working, there is a sliding pair between the two, so that the irregular convex ball area on the outer side of the lead screw slider 305 can slide continuously in the spiral groove of the reverse double helix reciprocating lead screw 404.

[0068] refer to Figure 9 and Figure 14 As shown, a second protrusion 3012 is provided inside the gearbox housing. The second protrusion 3012 is an annular protrusion. A limiting end face 3013 is provided at the end of the gearbox housing. A driven shaft hole 306 is formed at the limiting end face 3013. The height of the second protrusion 3012 is less than the height of the first protrusion. The driving gear is located between the two second protrusions 3012. The inner diameter of the second protrusion 3012 is greater than the diameter of the driven shaft hole in the gearbox housing. The driven shaft passes through the driving gear and is connected to the driving gear to drive the rotation of the driving gear. A bearing is provided between the driven shaft and the second protrusion so that the driven gear can rotate relative to the second protrusion 3012. Snap rings 309 are provided on both sides of the bearing. Snap rings 309 are also provided at both ends of the driving gear 303. The driving gear is connected to the driven shaft through a key block. In this way, the driving gear 303 is fixedly connected to the driven shaft 507 through the key block and snap rings and rotates with it.

[0069] refer to Figure 16 and Figure 17 As shown, the reciprocating screw seedling insert assembly 4 includes a limiting bearing wheel 401, a limiting guide ring 402, a fixing pin 403, a reverse double helix reciprocating screw 404, and a seedling insert 405. The limiting bearing wheel 401 is fixedly mounted on the outer shaft end of the limiting guide ring 402 by a snap ring. The limiting guide ring 402 is fixedly mounted on the shaft end of the reverse double helix reciprocating screw 404 by the fixing pin 403. The other end of the reverse double helix reciprocating screw 404 is fixedly connected to the seedling insert 405. The limiting bearing wheel 401 is fixedly connected to the reverse double helix reciprocating screw 404 by the limiting guide ring 402. During operation, it moves within the limiting track of the screw rotation limiting seat 302.

[0070] It is easy to understand that the limiting track can be a T-shaped track, and a T-shaped part is formed between the limiting bearing wheel 401 and one side of the limiting guide ring 402, so as to prevent the limiting bearing wheel 401 from disengaging from the limiting track.

[0071] It should be noted that the seedling insert 405 includes a straight rod connected to one end of a reverse double-helix reciprocating screw 404, and a V-shaped part is provided at the end of the straight rod to press the seedling.

[0072] Among them, the reverse double helix reciprocating screw 404 has two semi-circular helical grooves with opposite directions of rotation on its shaft. The two helical lines (helical grooves) are smoothly connected at the two shaft ends. During operation, the irregular convex ball area on the outer side of the screw slider 305 can be tightly tangent to the helical grooves and can smoothly and steadily change direction at both ends.

[0073] Specifically, refer to Figure 18 and Figure 19As shown, the gear transmission assembly 5 includes a power gear 501, a driving bevel gear shaft 502, a driving bevel gear 503, a driven free bevel gear 504, a driving free bevel gear 505, a driven bevel gear 506, and a driven shaft 507. The two sides of the driving bevel gear 503 mesh with the driven free bevel gear 504 and the driven bevel gear 506, respectively. The driving bevel gear 503 and the driving free bevel gear 505 are arranged opposite to each other. The driven free bevel gear 504 and the driven bevel gear 506 both mesh with the driving free bevel gear 505. The driven bevel gear 506 is connected to the driven shaft 507.

[0074] Specifically, the main rocker arm 201 is hinged to the crossbar 204 via the active bevel gear shaft 502 in the gear transmission assembly 5. The active bevel gear shaft 502 passes through the crossbar 204. The inner side of the active bevel gear shaft 502 is fixedly connected to the power gear 501. The power gear 501 is located inside the gear ring 102 and meshes with it. The outer side is fixedly connected to the active bevel gear 503. When the main rocker arm 201 rotates, it drives the power gear 501 to mesh and roll on the gear ring 102 via the active bevel gear shaft 502, generating rotational motion (the rotation center of the main rocker arm 201 coincides with the axis of the gear ring 102). The power gear 501 transmits rotational power to the active bevel gear 503 via the active bevel gear shaft 502. This part of the rotational power is transmitted to the active gear 303 inside the gearbox assembly 3 via the gear transmission assembly 5. Specifically, the transmission of rotational power is achieved by fixing the driven shaft 507 to the active gear 303.

[0075] It is easy to understand that the power gear 501 and the driving bevel gear 503 are fixedly connected to the driving bevel gear shaft 502 through a key block and a snap ring, and there is no relative movement between the three; the driving free bevel gear 505 is connected to the driving bevel gear shaft 502 through a bearing and a snap ring, and there is only relative rotational movement between the two.

[0076] In this embodiment, the driven free bevel gear 504 and the driven bevel gear 506 are sequentially installed at corresponding positions on the driven shaft 507. The driven free bevel gear 504 is connected to the driven shaft 507 through bearings and a retaining ring, and there is only relative rotational motion between the two. The driven bevel gear 506 is fixedly connected to the driven shaft 507 through a key block and a retaining ring, and there is no relative motion between the two.

[0077] During operation, the rotational power generated by the meshing of the drive gear 501 and the gear ring 102 is transmitted to the drive bevel gear 503 through the drive bevel gear shaft 502. The drive bevel gear 503 meshes with the driven bevel gear 506, realizing a 90° reversal of the rotational power and outputting it to the gearbox assembly 3 through the driven shaft 507. In this process, the driven free bevel gear 504 and the drive free bevel gear 505 respectively balance the unilateral meshing force generated by the meshing of the drive bevel gear 503 and the driven bevel gear 506, avoiding fatigue deformation of the gear transmission assembly 5 due to unbalanced forces.

[0078] Example 2

[0079] This embodiment discloses a working method for a reciprocating direct-insertion bare seedling transplanting device on film, which adopts the reciprocating direct-insertion bare seedling transplanting device on film described in Embodiment 1, and includes the following:

[0080] Taking the transplanting of sweet potato seedlings onto a film-covered surface as an example, during operation, the transplanting device is installed and fixed at the corresponding position behind the seedling conveying assembly of the transplanter. The seedlings are placed on the seedling placement plate above the seedlings. The entire transplanting device and seedling conveying assembly are placed on the ridge. The transplanter inputs continuous rotational power to the main rocker arm 201 on the outside of the transplanting device through a chain sprocket (or motor or other means). After adjusting the posture of the transplanting device, the machine starts working. This device can effectively realize various transplanting postures of sweet potato seedlings in the soil according to the agronomical requirements of sweet potato seedling transplanting, meeting the complex planting agronomical requirements of sweet potato seedlings.

[0081] The frame assembly is fixed to the transplanter, which is an existing agricultural equipment.

[0082] The rotational power is transmitted to the device fixing plate 102 by the motor 101, and then to the main rocker arm 201. The main rocker arm 201 drives the connecting rod assembly 2 to move along the set trajectory.

[0083] During rotation, the main rocker arm generates rotational power with the gear ring, which in turn drives the driving gear to rotate through the gear transmission assembly 5, and then drives the driven gear to rotate. Because the driven gear keyway is equipped with a lead screw slider 305, and the lead screw slider 305 is in close contact with the reverse double helix reciprocating lead screw, the reverse double helix reciprocating lead screw 404 can perform linear motion. Because the reverse double helix reciprocating lead screw 404 is subject to the rotational limiting effect of the limiting bearing wheel 401 and the lead screw rotation limiting seat 302, the reverse rotational force it receives is limited, forcing the reverse double helix reciprocating lead screw 404 to achieve reciprocating axial movement along its axis under the continuous unidirectional rotation of the driven gear 304.

[0084] During the operation of the transplanting device, the connecting rod assembly 2 completes one rotational motion while the reciprocating screw seedling insertion assembly 4 also completes one reciprocating axial motion. This process is one working cycle of the device, i.e., one potato seedling transplanting process.

[0085] During the operation of the transplanting device, the reciprocating rotation of the connecting rod assembly 2 and the axial reciprocating linear motion of the reciprocating screw seedling insertion assembly 4 combine to form a transplanting trajectory that meets the agronomic requirements for potato seedling planting. During this process, only the seedling insertion 405 part of the device enters the soil, thereby solving the problems of excessively large film opening and poor soil backfilling effect while ensuring that the posture of the bare seedlings meets the agronomic requirements after transplanting.

[0086] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A reciprocating direct-insertion bare seedling transplanting device, characterized in that, The system includes a frame assembly, which comprises a power source and a device fixing component. The power source is mounted on the device fixing component, which can be fixed to the transplanter. The drive end of the power source passes through the device fixing component and connects to the main rocker arm of the linkage assembly. The device fixing component, the main rocker arm, the auxiliary rocker arm, and the crossbar form a linkage assembly. The connection point between the auxiliary rocker arm and the device fixing component is lower than the connection point between the main rocker arm and the device fixing component. The end of the main rocker arm away from the device fixing component can generate rotational power with the frame assembly. The crossbar can achieve translational and rotational movements within a set plane. A gearbox assembly is installed at the crossbar. The gearbox assembly contains a meshing drive gear and a driven gear. The drive gear is connected to the main rocker arm, and the driven gear is connected to the reciprocating seedling insertion assembly. During rotation, the main rocker arm drives the drive gear to rotate, which in turn drives the driven gear to rotate, causing the reciprocating seedling insertion assembly to achieve reciprocating linear motion. When the main rocker arm moves to its lowest position, the reciprocating seedling insertion assembly extends to a longer state to insert seedlings. The gearbox assembly includes a gearbox housing, the driving gear and the driven gear are disposed inside the gearbox housing, the driven gear is engaged with a reverse double helix reciprocating screw, one end of the reverse double helix reciprocating screw passes through the gearbox housing and is provided with a limiting component, the limiting component is engaged with a screw rotation limiting seat fixed to the gearbox housing, and the other end of the reverse double helix reciprocating screw is provided with a seedling insert. Both the main rocker arm and the auxiliary rocker arm can be rotatably mounted on the same side of the device fixing component. The main rocker arm and the auxiliary rocker arm are spaced apart. The active bevel gear shaft passes through the main rocker arm and the horizontal tie rod. A power gear is installed at one end of the active bevel gear shaft that passes through the main rocker arm. The power gear meshes with the gear ring. The gear ring is fixed to the device fixing component. The axis of the gear ring coincides with the axis of the drive end of the power source. The radius of the gear ring is smaller than the length of the horizontal tie rod. The driving bevel gear shaft passes through one end of the cross tie rod and is connected to the gear transmission assembly, which is connected to the driven shaft. The driven shaft passes through the driving gear and is connected to the driving gear to drive the rotation of the driving gear.

2. The reciprocating direct-insertion bare seedling film transplanting device according to claim 1, characterized in that, The gearbox housing comprises two halves, each half of which has a first protrusion inside. The driven gear is supported by a bearing on the outside of the first protrusion so that the driven gear can rotate relative to the first protrusion. The snap ring is located at a position away from the other bearing.

3. The reciprocating direct-insertion bare seedling film transplanting device according to claim 2, characterized in that, The gearbox housing has a second protrusion inside, the height of which is less than the height of the first protrusion. The drive gear is located between the two second protrusions. The inner diameter of the second protrusion is greater than the diameter of the driven shaft hole in the gearbox housing. The driven shaft is connected to the main rocker arm. A bearing is provided between the driven shaft and the second protrusion so that the driven gear can rotate relative to the second protrusion.

4. The reciprocating direct-insertion bare seedling film transplanting device according to claim 1, characterized in that, The driven gear has a keyway with a lead screw and slider, which are connected to the reverse double helix reciprocating lead screw. When the driving gear drives the driven gear to rotate, the reverse double helix reciprocating lead screw performs reciprocating linear motion due to the lead screw and slider.

5. The reciprocating direct-insertion bare seedling film transplanting device according to claim 1, characterized in that, The lead screw rotation limiting seat includes a support seat connected to the gearbox housing, a support plate is provided on one side of the support seat, and a limiting rail is provided on the side of the support plate facing the driven shaft, and the limiting component is engaged in the limiting rail; A limiting guide ring is provided at one end of the reverse double helix reciprocating screw, and one side of the limiting guide ring is connected to the limiting component.

6. The reciprocating direct-insertion bare seedling film transplanting device according to claim 1, characterized in that, The horizontal tie rod is connected to the gearbox assembly via a hinged shaft seat. The hinged shaft seat is provided with a hinged shaft, which passes through the horizontal tie rod and the auxiliary rocker arm. The installation angle of the device fixing component relative to the transplanter is replaceable.

7. A reciprocating direct-insertion method for transplanting bare seedlings onto a film, characterized in that, The reciprocating direct-insertion bare seedling film transplanting device according to any one of claims 1-6 includes the following: The frame assembly is fixed to the transplanter; The end of the main rocker arm away from the device fixing part can generate rotational power with the frame assembly, thereby driving the drive gear to rotate, which in turn drives the driven gear to rotate, and drives the reciprocating seedling insertion assembly to achieve reciprocating linear motion. While the connecting rod assembly completes one rotation, the reciprocating seedling insertion assembly completes one reciprocating axial motion. When the main rocker arm moves to the lowest position, the reciprocating seedling insertion assembly extends to a longer state to achieve seedling insertion on the film.

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