Self-propelled seedling transplanter

Abstract

The utility model provides a self-propelled seedling transplanter, which belongs to the technical field of agricultural machinery and structurally comprises a frame, a lifting working frame and a planting unit. A lifting working frame is arranged on the inner periphery of the frame, a lifter is arranged on the frame, and the lifter drives the lifting working frame to move up and down in the inner space of the frame in a lifting mode in the vertical direction. The planting unit is arranged in the inner periphery of the lifting working frame, and at least one group of planting mechanism is arranged in the planting unit; driven walking wheels are fixedly arranged on the left side and the right side of the lifting working frame respectively; the lifting working frame descends until the passive walking wheel falls to the ground, and the passive walking wheel obtains passive rotation of walking on the field ground to provide running power for the planting mechanism where the passive walking wheel is located; the lifting working frame is lifted until the driven walking wheels are separated from the ground, the driven walking wheels are suspended, and power is cut off; and each group of planting mechanism consists of a planting rack, a horizontally arranged circulating seedling cup type seedling feeder and a vertical planting device. The furrowing, planting and soil covering integrated machine integrates furrowing, planting and soil covering operation at one time and is high in compatibility.

Description

Technical Field

[0001] This utility model relates to the field of agricultural machinery technology, specifically a self-propelled seedling transplanter. Background Technology

[0002] Seedling transplanters utilize mechanized seedling transplanting and sowing, suitable for the needs of large-scale, rapid planting. However, existing seedling transplanters are too specialized and targeted, many only suitable for a single crop or type of crop. They lack the versatility to transplant seedlings from various crops, meaning their general applicability is insufficient. For example, they are incompatible with different seedling sizes, the use of different seedling pots, or transplanting crops in new seasons. Furthermore, highly specialized machines generally have poor environmental adaptability. For instance, on uneven, complex terrain or with varying soil conditions, the machines often miss or damage seedlings during transplanting.

[0003] Furthermore, some machines rely heavily on the replacement and maintenance of non-metallic components during transport and operation. This can compromise the durability of the machine's mechanical components, increasing maintenance costs and inevitably reducing its economic efficiency.

[0004] Therefore, in the current stage of agricultural transplanting, there is an urgent need for a fast seedling transplanter that is efficient, low-cost, stable in operation, requires no or low-cost maintenance, and is highly adaptable and compatible with seedlings and working environments, so as to reduce the labor intensity of workers and improve labor efficiency and the quality of seedling transplanting. Summary of the Invention

[0005] The technical objective of this invention is to address the shortcomings of existing technologies and provide a self-propelled seedling transplanter.

[0006] The technical solution of this utility model is implemented in the following way: the self-propelled seedling transplanter of this utility model has a structure including a frame, a lifting working frame, and a planting unit.

[0007] The inner perimeter of the frame is equipped with a lifting work frame, and a lift is installed on the frame. The lift drives the lifting work frame to move vertically up and down in the inner perimeter space of the frame.

[0008] The planting unit is configured inside the lifting work frame, and at least one planting mechanism is provided in the planting unit.

[0009] The lifting work frame is fixedly equipped with passive travel wheels on both the left and right sides, and the passive travel wheels are mounted on the lifting work frame through passive travel wheel frames;

[0010] The lifting work frame descends until the passive walking wheels touch the ground, and the passive walking wheels obtain the passive rotation of walking on the field ground to provide the operating power for the planting mechanism.

[0011] The lifting work platform is raised until the passive walking wheels leave the ground, the passive walking wheels are suspended in the air, and the power is cut off.

[0012] Each planting unit consists of a planting frame, horizontally arranged circulating seedling cup feeders, and vertically oriented planting devices.

[0013] The planting machine frame is fixedly equipped with a horizontally arranged seedling cup support plate. A horizontally arranged circular racetrack-type chain is set on the seedling cup support plate. Seedling cups are distributed at equal intervals along the outer periphery of the circular racetrack-type chain. The bottom sidewall of each seedling cup is fixedly connected to the link of the circular racetrack-type chain through a seedling cup fixing component. The distribution of each seedling cup on the circular racetrack-type chain forms a circular racetrack-type seedling cup group.

[0014] The seedling cup is designed to be open from top to bottom. The bottom of the seedling cup is hinged to a seedling release valve via a spring hinge. The spring hinge gives the seedling release valve an elastic force that allows it to open and close elastically.

[0015] The circular racetrack-style chain on the seedling cup support plate ensures that the seedling drop valve of each seedling cup in the circular racetrack-style seedling cup group is pressed against the upper surface of the seedling cup support plate, and the seedling drop valve is in a closed state at the bottom opening of the seedling cup.

[0016] A seedling drop opening is provided on the seedling cup support plate at one of the passage positions of the circulating racetrack-type seedling cup group, and the opening of the seedling drop opening is larger than the seedling drop valve.

[0017] When the seedling cup reaches the seedling dropping opening, the seedling dropping valve, which was closed at the bottom of the seedling cup, loses the support of the seedling cup support plate. Under the elastic action of the spring hinge, the seedling dropping valve flips down, the bottom of the seedling cup opens, and the seedling pot falls through the seedling dropping opening of the seedling cup support plate into the seedling guide channel under the action of gravity. The seedling guide channel connects with the planting device.

[0018] The structure of the planter is:

[0019] A horizontally arranged main shaft is configured on the planting machine frame. A longitudinally arranged synchronous double disc is coaxially fixedly connected to the main shaft. Fixed arms are fixedly connected to the radial direction of the left and right inner discs of the double discs. Each fixed arm extends out of the outer perimeter of the disc with equal length. The fixed arms of the left and right double discs are of the same length and are evenly distributed on their respective discs.

[0020] On each of the two discs, the number of fixed arms can be two, three, four, five, or six;

[0021] A duckbill seedling planter is hinged between each pair of fixed arms on the left and right sides via a rotating hinge frame; the duckbill seedling planters are evenly distributed around the periphery of the double discs; the duckbill seedling planters are located in the space between the surfaces of the double discs.

[0022] An eccentric disc is mounted on the main shaft on one side of the double disc via a bearing; the eccentric disc has evenly distributed hinge holes on its circumference, and the number of hinge holes is the same as the number of duckbill seedling planters.

[0023] Each hinge hole is hinged to the square key at the end of the adjacent rotating hinge frame via a connecting rod, and the other end of the connecting rod is rotatably hinged to the hinge hole.

[0024] A first sprocket and chain drive pair is configured between the passive walking wheel and the main shaft;

[0025] A second chain and sprocket right-angle transmission pair is configured between the main shaft and the ring-shaped racetrack chain;

[0026] The passive walking wheel drives the main shaft and the circular racetrack-type chain to operate;

[0027] The two discs rotate on the same main shaft. When the two discs rotate, each duckbill seedling planter is passively followed by the eccentric disc under the constraint of the connecting rod and the eccentric disc. The connecting rod constrains the square key to rotate, so that the duckbill opening of the duckbill seedling planter always faces vertically downward while following the rotation of the two discs.

[0028] Each duckbill seedling planter has a duckbill opening that is downward in the left and right direction. The structure of the duckbill seedling planter consists of a left shell and a right shell. The upper middle parts of the left shell and the right shell are respectively vertically hinged to the rotating hinge. The left shell and the right shell are opposite to each other and interlocked. The openings of the left shell and the right shell are connected by a tension spring. The elastic force of the tension spring forces the left shell and the right shell to interlock and close.

[0029] A compression rolling bearing is fixedly mounted on the top outer surface of each of the left and right shells;

[0030] An arc-shaped protruding bridge rail is fixedly connected to the inner side of each pair of fixed arms facing each other on the left and right.

[0031] When the duckbill seedling planter rotates to the lower edge of the double disc, the tip of the duckbill seedling planter enters the soil, and the arc-shaped protruding bridge rails of the fixed arms on the left and right sides of the duckbill seedling planter simultaneously begin to abut against and press against the compression rolling bearings of the left and right shells.

[0032] Throughout the entire stroke of the arc-shaped raised bridge rail pressing and squeezing the rolling bearing, the duckbill opening of the duckbill seedling planter remains open;

[0033] As the planter continues to rotate, when it moves away from the lower edge of the double discs, the arc-shaped raised bridge rails on both sides simultaneously release the pressure roller bearings. The pressure roller bearings disengage from the pressure, and the left and right shells of the duckbill opening reset and close the opening under the action of the tension spring, thus removing the planter from the soil.

[0034] Each planting mechanism has a soil-covering wheel fixedly installed at its bottom.

[0035] Inside the lifting work frame, each planting mechanism is equipped with a trenching machine at the front;

[0036] Each planting unit's trencher, duckbill seedling planter, and soil covering wheel are arranged in the same longitudinal column.

[0037] A seedling storage box is fixedly connected to the upper rear of the vehicle frame;

[0038] Manual seedling feeding seats are installed on both sides of the lifting work frame, with the manual seedling feeding seats facing the circulating seedling cup feeder.

[0039] The front of the chassis is equipped with a self-propelled locomotive, which is equipped with an engine;

[0040] The front section of the frame is equipped with a front drive axle, which drives the front wheels, and the front wheels are equipped with a front steering gear;

[0041] The engine drives the front drive axle via the gearbox;

[0042] The rear section of the frame is equipped with a rear drive axle, which drives the rear wheels, and the rear wheels are equipped with a rear wheel steering mechanism;

[0043] The engine drives the transfer case, one power source drives the lifting platform, another power source drives the trencher installed in the lifting work frame, and the third power source drives the rear drive axle.

[0044] In the non-drive lifting operation state of the elevator, the lifting work frame has passive free travel in the vertical direction within the inner space of the frame.

[0045] The beneficial effects of this utility model compared with the prior art are:

[0046] This utility model's self-propelled seedling transplanter completes the ditching, planting, and soil covering operations in one go. It is simple and quick to operate, with a fast planting speed, making it suitable for large-scale agricultural planting. The seedling transplanter itself does not require a power unit, reducing costs and making it highly adaptable.

[0047] It has good adaptability. First, it can be used with small four-wheeled tractors commonly used in rural areas to form a two-row transplanter, which is inexpensive and easily accepted by farmers. Second, it is suitable for transplanting a variety of crops, such as corn, cotton, sugar beets, tobacco, and rapeseed, and can transplant both bare seedlings (soilless seedlings) and potted seedlings.

[0048] It enables rapid transplanting of seedlings in two rows, with two planting units working simultaneously. The planting speed is fast, and the seedling transplanter itself does not require a power unit, reducing costs and making it highly adaptable.

[0049] This machine has its own power system, eliminating the need for large machinery to pull it, making it small, lightweight, and easy to operate. It can move automatically, level the land, transplant seedlings automatically, and cover the soil automatically. It is suitable not only for large fields on plains but also for intercropping and transplanting in various locations such as small plots, hillsides, around houses, orchards, and greenhouses.

[0050] Small in size, low in cost, highly adaptable, and reduces the labor intensity of operators.

[0051] This avoids the problem of unstable forward tilting caused by the dragging phenomenon of the connecting rod nodding machine-type duckbill seedling planter during planting.

[0052] The traditional circular rotating disc was improved to a rotating running track, which on the one hand increased the number of seedling cups in the work unit, and on the other hand, lengthened the running track, thus extending the running time of a single seedling cup.

[0053] The self-propelled seedling transplanter of this utility model is reasonably designed, simple in structure, safe and reliable, easy to use and maintain, and has great value for promotion and use. Attached Figure Description

[0054] Appendix Figure 1 This is a schematic diagram of the main structure of this utility model;

[0055] Appendix Figure 2 This is a top view of the structure of this utility model;

[0056] Appendix Figure 3 This is a schematic diagram of the planting unit of this utility model;

[0057] Appendix Figure 4 This is a schematic diagram of the connection structure between the double discs and the fixed arm of this utility model;

[0058] Appendix Figure 5 This is a schematic diagram of the connection structure of the double discs, fixed arm, and duckbill seedling planter of this utility model;

[0059] Appendix Figure 6 This is a structural schematic diagram of the planting mechanism of this utility model in its working state;

[0060] Appendix Figure 7 This is a schematic diagram of the structure of the duckbill seedling planter of this utility model;

[0061] Appendix Figure 8 This is a schematic diagram of the overall assembly structure of the duckbill seedling planter of this utility model;

[0062] Appendix Figure 9 This is a cross-sectional structural diagram of the duckbill portion of this utility model;

[0063] Appendix Figure 10 This is a schematic diagram of the opening state structure of the duckbill seedling planter of this utility model;

[0064] Appendix Figure 11 This is a structural schematic diagram of the working state of the eccentric disc of the planting mechanism of this utility model;

[0065] Appendix Figure 12 This is a schematic diagram of the connection structure between the eccentric disc and the connecting rod of this utility model;

[0066] Appendix Figure 13 This is a schematic diagram of the soil-covering wheel structure of this utility model;

[0067] Appendix Figure 14 This is a schematic diagram of the power transmission configuration structure of the entire machine of this utility model.

[0068] The markings in the attached diagram represent:

[0069] 1. Vehicle frame, 2. Lifting work platform, 3. Lifting machine

[0070] 4. Planting unit; 5. Planting structure.

[0071] 6. Planting machine frame; 7. Circulating seedling cup feeder; 8. Planter.

[0072] 9. Seedling cup support plate; 10. Circular racetrack-style chain; 11. Seedling cup; 12. Seedling cup fixing component; 13. Circular racetrack-style seedling cup assembly.

[0073] 14. Cup bottom spring hinge; 15. Seedling lowering valve.

[0074] 16. Luomiaokou,

[0075] 17. Seedling guide channel,

[0076] 18. Spindle; 19. Double discs; 20. Fixed arm.

[0077] 21. Rotate the hinge frame; 22. Duckbill seedling planter.

[0078] 23. Eccentric disc, 24. Reamed hole, 25. Connecting rod, 26. Square key.

[0079] 27. Passive travel wheel; 28. First sprocket and chain drive pair; 29. ​​Second chain and sprocket right-angle drive pair.

[0080] 30. Left housing; 31. Right housing; 32. Tension spring; 33. Compression rolling bearing.

[0081] 34. Arc-shaped raised bridge rails,

[0082] 35. Covering with soil and rotating the wheel.

[0083] 36. Trenching machine

[0084] 37. Seedling storage box

[0085] 38. Manual seedling feeding seat,

[0086] 39. Self-propelled locomotive; 40. Engine;

[0087] 41. Front drive axle; 42. Front wheel; 43. Front wheel steering gear.

[0088] 44. Rear drive axle; 45. Rear wheel; 46. Rear wheel steering gear.

[0089] 47. Duckbill seedling planter insertion stage; 48. Duckbill seedling planter insertion and closing stage; 49. Duckbill seedling planter insertion and opening stage.

[0090] 50. Gearbox; 51. Transfer case. Detailed Implementation

[0091] The self-propelled seedling transplanter of this utility model will be described in detail below with reference to the accompanying drawings.

[0092] As shown in the attached figure, the self-propelled seedling transplanter of this utility model includes a frame 1, a lifting working frame 2, and a planting unit 4.

[0093] A lifting work frame 1 is provided inside the frame 1, and a lift 3 is provided on the frame 1. The lift 3 drives the lifting work frame 2 to move up and down vertically in the space inside the frame 1.

[0094] The planting unit 4 is configured inside the lifting work frame 2, and at least one planting mechanism 5 is provided in the planting unit 4; this embodiment provides a structure in which two sets of planting mechanisms are configured in the left and right sides in one planting unit 4.

[0095] The lifting work frame 2 is fixedly equipped with passive walking wheels 27 on the left and right sides respectively. The passive walking wheels 27 are mounted on the lifting work frame 2 through passive walking wheel frames.

[0096] The lifting work frame 2 is lowered until the passive walking wheels 27 fall to the ground. The passive walking wheels 27 obtain passive rotation for walking on the field ground, providing operating power for the planting mechanism to which they are located.

[0097] The lifting work frame 2 is raised until the passive walking wheel 27 is off the ground, the passive walking wheel 27 is suspended in the air, and the power is cut off;

[0098] Each planting mechanism 5 consists of a planting frame 6, a horizontally arranged circulating seedling cup feeder 7, and a vertically oriented planting device 8.

[0099] A horizontally arranged seedling cup support plate 9 is fixedly installed on the planting frame 6. A horizontally arranged circular racetrack chain 10 is installed on the seedling cup support plate 9. Seedling cups 11 are distributed at equal intervals along the outer periphery of the circular racetrack chain 10. The bottom sidewall of each seedling cup 11 is fixedly connected to the link of the circular racetrack chain 10 through a seedling cup fixing piece 12. The distribution of each seedling cup 11 on the circular racetrack chain forms a circular racetrack seedling cup group 13.

[0100] The seedling cup 11 is designed to be vertically continuous. The bottom of the seedling cup is hinged to a seedling lowering valve 15 via a bottom spring hinge 14. The spring hinge 14 gives the seedling lowering valve an elastic force that allows it to open and close elastically.

[0101] The circular racetrack chain 10 is set on the seedling cup support plate 9 so that the seedling drop valve of each seedling cup in the circular racetrack seedling cup group is pressed against the upper surface of the seedling cup support plate, and the seedling drop valve is in a closed state to the bottom opening of the seedling cup.

[0102] A seedling drop opening 16 is provided on the seedling cup support plate 9 at the position of the seedling drop opening 16 above the seedling guide channel of the circulating racetrack type seedling cup group. The opening of the seedling drop opening 16 is larger than the seedling drop gate 15.

[0103] When the seedling cup 11 reaches the seedling outlet 16, the seedling outlet gate 15, which is closed at the bottom of the seedling cup, loses the support of the seedling cup support plate. Under the elastic action of the spring hinge, the seedling outlet gate flips down, the bottom of the seedling cup opens, and the seedling pot falls through the seedling outlet of the seedling cup support plate to the seedling guide channel 17 under the action of gravity. The seedling guide channel 17 is connected to the planting device 8 in the vertical direction.

[0104] The structure of the planter 8 is as follows:

[0105] A horizontally arranged main shaft 18 is configured on the planting frame 6. A longitudinally arranged synchronous double disk 19 is coaxially fixedly connected to the main shaft 18. Fixed arms 20 are fixedly connected to the radial direction of the left and right inner disk surfaces of the double disk 19. Each fixed arm extends out of the outer periphery of the disk surface of equal length. The fixed arms of the left and right double disks are of the same length and are evenly distributed on their respective disk surfaces.

[0106] On each of the two discs, the number of fixing arms can be two, three, four, five, or six; this embodiment and accompanying drawings provide an example of a configuration with six fixing arms on the two discs.

[0107] A duckbill seedling planter 22 is hinged between each pair of fixed arms on the left and right sides of the double discs via a rotating hinge 21; the duckbill seedling planters 22 are evenly distributed on the outer periphery of the double discs; the duckbill seedling planters are located in the space between the surfaces of the double discs.

[0108] An eccentric disk 23 is mounted on the main shaft on one side of the double disk via a bearing; the eccentric disk 23 has evenly distributed hinge holes 24 on its circumference, and the number of hinge holes is the same as the number of duckbill seedling planters.

[0109] Each hinge hole 24 is hinged to the square key 26 at the end of the adjacent rotating hinge frame via a connecting rod 25, and the other end of the connecting rod 25 is rotatably hinged to the corresponding and adjacent hinge hole 24.

[0110] A first sprocket and chain drive pair 28 is configured between the passive walking wheel 27 and the main shaft 18;

[0111] A second chain sprocket right-angle transmission pair 29 is configured between the main shaft 18 and the annular racetrack chain 10;

[0112] The passive walking wheel 27 drives the main shaft 18 and the ring-shaped chain 10 to rotate through the configuration of the first sprocket chain drive pair 28 and the second chain sprocket right-angle drive pair 29;

[0113] The two discs rotate on the same main shaft. When the two discs rotate, each duckbill seedling planter is passively followed by the eccentric disc under the constraint of the connecting rod and the eccentric disc. The connecting rod constrains the square key to rotate, so that the duckbill opening of the duckbill seedling planter always faces vertically downward while following the rotation of the two discs.

[0114] When each duckbill seedling planter reaches its upper stop point, the upper seedling feeding inlet of the planter and the seedling guide channel above it are vertically aligned. As the seedling cups move into the seedling guide channel, the seedling drop gate, no longer supported by the seedling cup support plate, automatically opens, allowing the seedlings to fall directly from the cups into the feeding inlet of the duckbill seedling planter via the seedling guide channel.

[0115] Select the transmission ratio of the matching second chain sprocket right-angle transmission pair, and the output linear velocity of the circular racetrack chain is just satisfied: the interval between two adjacent seedling cups and the interval between two adjacent duckbill seedling planters when they reach the top dead center of the double disc are the same, and at the top dead center, the seedling cup, the seedling guide channel, and the duckbill seedling planter are coaxial in the vertical direction.

[0116] Each duckbill seedling planter has a duckbill opening that is downward in the left and right direction. The structure of the duckbill seedling planter consists of a left shell 30 and a right shell 31. The upper middle parts of the left shell 30 and the right shell 31 are respectively vertically hinged to the rotating hinge frame 21. The left shell 30 and the right shell 31 are opposite to each other and interlocked. The openings of the left shell and the right shell are connected by a tension spring 32. The elastic force of the tension spring 32 forces the left shell and the right shell to interlock and close.

[0117] A compression rolling bearing 33 is fixedly disposed on the top outer surface of the left shell 30 and the right shell 31 respectively;

[0118] A section of arc-shaped protruding bridge rail 34 is fixedly connected to the inner side of each pair of fixed arms facing left and right;

[0119] When the duckbill seedling planter rotates to below the lower edge of the double disc, the tip of the duckbill seedling planter enters the soil, and the arc-shaped protruding bridge rails 34 of the fixed arms on the left and right sides of the duckbill seedling planter simultaneously begin to abut against and press against the compression rolling bearings of the left and right shells.

[0120] Throughout the entire stroke of the arc-shaped raised bridge rail 34 pressing and squeezing the rolling bearing 33, the duckbill opening of the duckbill seedling planter remains open;

[0121] As the planter continues to rotate, when it moves away from the lower edge of the double discs, the arc-shaped raised bridge rails 34 on both sides simultaneously release the pressure roller bearings 33. The pressure roller bearings 33 disengage from the pressure, and the left and right shells of the duckbill opening reset and close the opening under the action of the tension spring, and the duckbill planter leaves the soil.

[0122] Each planting mechanism 5 has a soil-covering wheel 35 fixedly installed at its bottom.

[0123] Inside the lifting work frame 2, each planting mechanism 5 is equipped with a trenching machine 36 at the front.

[0124] The trencher 36, the duckbill seedling planter 22, and the soil covering wheel 35 of each planting mechanism are arranged in the same longitudinal direction.

[0125] A seedling storage box 37 is fixedly connected to the upper rear of the vehicle frame;

[0126] The lifting work frame 2 is equipped with manual seedling feeding seats 38 on both sides, with the manual seedling feeding seats facing the circulating seedling cup feeder.

[0127] The front of the frame 1 is equipped with a self-propelled locomotive 39, and the self-propelled locomotive is equipped with an engine 40;

[0128] The front section of the frame is equipped with a front drive axle 41, which drives the front wheels 42, and the front wheels are equipped with a front wheel steering gear 43.

[0129] The engine drives the front drive axle 41 via the gearbox 50;

[0130] The rear section of the frame is equipped with a rear drive axle 44, which drives the rear wheels 45, and the rear wheels are equipped with a rear wheel steering mechanism 46;

[0131] The gearbox 50 drives the transfer case 51. One power source of the transfer case 51 drives the lifting machine 3, another power source drives the trencher 36 configured inside the lifting work frame, and the third power source drives the rear drive axle 44.

[0132] In its non-drive lifting operation, the lifting work frame has passive free travel in the vertical direction within the vehicle frame's inner space. When moving, the lifting work frame adapts to uneven ground conditions, facilitating better trenching and transplanting, and is compatible with various terrains and usage scenarios.

[0133] By calculating the transmission ratios of the first sprocket chain drive pair and the second chain sprocket right-angle drive pair, the linear velocity of the passive walking wheel is obtained to be the same as, in the same direction, and synchronous with, the linear velocity of the duckbill of the duckbill planter. This ensures that the duckbill and soil are approximately stationary when the duckbill enters the soil, facilitating stable planting and ensuring that each duckbill planter remains approximately stationary with respect to the ground when it reaches the soil entry point, thus promoting precise planting.

[0134] A suspension bracket or other suspension mechanism can be configured between the lifting work frame and the vehicle frame to ensure the stable load-bearing capacity of the lifting work frame on the vehicle frame, and to facilitate the lifting and lowering of the lifting work frame on the vehicle frame.

[0135] The planting mechanism uses a circulating seedling cup feeder. The circulating racetrack-style seedling cup set consists of several seedling cups, the diameter of which corresponds to the size of the seedling pot. Each seedling cup has a seedling discharge gate at the bottom; the gate opens and closes by passing through the discharge opening. During the period when the seedling cup is closed, seedlings can be manually fed into the cup, allowing for rapid and continuous feeding.

[0136] The circular racetrack-style seedling cup group abandons the traditional circular arrangement of seedling cups. The circular layout usually uses a disc with seedling cups evenly spaced around the circumference. The size of the seedling cups is very limited. Based on the size of the seedlings, the commonly used seedling cup sizes are basically fixed, which means that the diameter of the disc directly determines the maximum number of seedling cups in a circle. If the diameter of the disc is relatively small, then the number of seedling cups in the circle will also be small. In addition, the disc rotates quickly. As soon as a seedling cup passes through the seedling dropping area, it immediately returns to the seedling dropping area. If seedlings are placed manually, the seedling cup will be empty before the seedlings are placed in it, resulting in empty holes.

[0137] This invention improves the traditional circular rotating disk's ring rotation stroke into a rotating circular racetrack type. On the one hand, it increases the number of seedling cups in the work unit, and on the other hand, it lengthens the racetrack-type transport stroke, extending the running time of a single seedling cup, which is conducive to orderly and continuous manual seedling feeding.

[0138] When this utility model is working, the seedlings fall through the seedling inlet and seedling guide channel by gravity into the duckbill seedling planter that has been rotated to the top. At this time, the duckbill at the bottom of the duckbill seedling planter is closed, so the seedlings will not leak and remain in the duckbill seedling planter in an upright position.

[0139] As the double discs rotate, the duckbill seedling planter descends to its bottom and penetrates deep into the soil. When the arc-shaped raised rails controlling the opening and closing of the duckbill roll to the compression bearing, the two sides of the arc-shaped raised rails together compress the compression bearing at the top of the planter, causing the duckbill to open and the seedling to fall into the planting hole in the soil, completing the planting. As the machine moves forward, the soil-covering wheels compact the soil on both sides of the seedling, completing the transplanting process.

[0140] The transplanting mechanism of this self-propelled seedling transplanter consists of independent planting units. Each planting unit is driven by a passive walking wheel and can be used with tractors of different sizes to form 2 to 6 or even more rows of transplanters. It can also be expanded to include other operating mechanisms.

Claims

1. A self-propelled seedling transplanter, characterized in that... Includes the vehicle frame, lifting work frame, and planting unit; The inner perimeter of the frame is equipped with a lifting work frame, and a lift is installed on the frame. The lift drives the lifting work frame to move vertically up and down in the inner perimeter space of the frame. The planting unit is configured inside the lifting work frame, and at least one planting mechanism is provided in the planting unit. The lifting work frame is fixedly equipped with passive travel wheels on both the left and right sides, and the passive travel wheels are mounted on the lifting work frame through passive travel wheel frames; The lifting work frame descends until the passive walking wheels touch the ground, and the passive walking wheels obtain the passive rotation of walking on the field ground to provide the operating power for the planting mechanism. The lifting work platform is raised until the passive walking wheels leave the ground, the passive walking wheels are suspended in the air, and the power is cut off. Each planting unit consists of a planting frame, horizontally arranged circulating seedling cup feeders, and vertically oriented planting devices.

2. The self-propelled seedling transplanter according to claim 1, characterized in that: The planting machine frame is fixedly equipped with a horizontally arranged seedling cup support plate. A horizontally arranged circular racetrack-type chain is set on the seedling cup support plate. Seedling cups are distributed at equal intervals along the outer periphery of the circular racetrack-type chain. The bottom sidewall of each seedling cup is fixedly connected to the link of the circular racetrack-type chain through a seedling cup fixing component. The distribution of each seedling cup on the circular racetrack-type chain forms a circular racetrack-type seedling cup group. The seedling cup is designed to be open from top to bottom. The bottom of the seedling cup is hinged to a seedling release valve via a spring hinge. The spring hinge gives the seedling release valve an elastic force that allows it to open and close elastically. The circular racetrack-style chain on the seedling cup support plate ensures that the seedling drop valve of each seedling cup in the circular racetrack-style seedling cup group is pressed against the upper surface of the seedling cup support plate, and the seedling drop valve is in a closed state at the bottom opening of the seedling cup. A seedling drop opening is provided on the seedling cup support plate at one of the passage positions of the circulating racetrack-type seedling cup group, and the opening of the seedling drop opening is larger than the seedling drop valve. When the seedling cup reaches the seedling dropping opening, the seedling dropping valve, which was closed at the bottom of the seedling cup, loses the support of the seedling cup support plate. Under the elastic action of the spring hinge, the seedling dropping valve flips down, the bottom of the seedling cup opens, and the seedling pot falls through the seedling dropping opening of the seedling cup support plate into the seedling guide channel under the action of gravity. The seedling guide channel connects with the planting device.

3. The self-propelled seedling transplanter according to claim 2, characterized in that: The structure of the planter is: A horizontally arranged main shaft is configured on the planting machine frame. A longitudinally arranged synchronous double disc is coaxially fixedly connected to the main shaft. Fixed arms are fixedly connected to the radial direction of the left and right inner discs of the double discs. Each fixed arm extends out of the outer perimeter of the disc with equal length. The fixed arms of the left and right double discs are of the same length and are evenly distributed on their respective discs. On each of the two discs, the number of fixed arms can be two, three, four, five, or six; A duckbill seedling planter is hinged between each pair of fixed arms on the left and right sides via a rotating hinge frame; the duckbill seedling planters are evenly distributed around the periphery of the double discs; the duckbill seedling planters are located in the space between the surfaces of the double discs. An eccentric disc is mounted on the main shaft on one side of the double disc via a bearing; the eccentric disc has evenly distributed hinge holes on its circumference, and the number of hinge holes is the same as the number of duckbill seedling planters. Each hinge hole is hinged to the square key at the end of the adjacent rotating hinge frame via a connecting rod, and the other end of the connecting rod is rotatably hinged to the hinge hole. A first sprocket and chain drive pair is configured between the passive walking wheel and the main shaft; A second chain and sprocket right-angle transmission pair is configured between the main shaft and the ring-shaped racetrack chain; The passive walking wheel drives the main shaft and the circular racetrack-type chain to operate; The two discs rotate on the same main shaft. When the two discs rotate, each duckbill seedling planter is passively followed by the eccentric disc under the constraint of the connecting rod and the eccentric disc. The connecting rod constrains the square key to rotate, so that the duckbill opening of the duckbill seedling planter always faces vertically downward while following the rotation of the two discs.

4. The self-propelled seedling transplanter according to claim 3, characterized in that: Each duckbill seedling planter has a duckbill opening that is downward in the left and right direction. The structure of the duckbill seedling planter consists of a left shell and a right shell. The upper middle parts of the left shell and the right shell are respectively vertically hinged to the rotating hinge. The left shell and the right shell are opposite to each other and interlocked. The openings of the left shell and the right shell are connected by a tension spring. The elastic force of the tension spring forces the left shell and the right shell to interlock and close. A compression rolling bearing is fixedly mounted on the top outer surface of each of the left and right shells; An arc-shaped protruding bridge rail is fixedly connected to the inner side of each pair of fixed arms facing each other on the left and right. When the duckbill seedling planter rotates to the lower edge of the double disc, the tip of the duckbill seedling planter enters the soil, and the arc-shaped protruding bridge rails of the fixed arms on the left and right sides of the duckbill seedling planter simultaneously begin to abut against and press against the compression rolling bearings of the left and right shells. Throughout the entire stroke of the arc-shaped raised bridge rail pressing and squeezing the rolling bearing, the duckbill opening of the duckbill seedling planter remains open; As the planter continues to rotate, when it moves away from the lower edge of the double discs, the arc-shaped raised bridge rails on both sides simultaneously release the pressure roller bearings. The pressure roller bearings disengage from the pressure, and the left and right shells of the duckbill opening reset and close the opening under the action of the tension spring, thus removing the planter from the soil.

5. The self-propelled seedling transplanter according to claim 4, characterized in that: Each planting mechanism has a soil-covering wheel fixedly installed at its bottom.

6. The self-propelled seedling transplanter according to claim 5, characterized in that: Inside the lifting work frame, each planting mechanism is equipped with a trenching machine at the front; Each planting unit's trencher, duckbill seedling planter, and soil covering wheel are arranged in the same longitudinal column.

7. The self-propelled seedling transplanter according to claim 1, characterized in that: A seedling storage box is fixedly connected to the upper rear of the vehicle frame; Manual seedling feeding seats are installed on both sides of the lifting work frame, with the manual seedling feeding seats facing the circulating seedling cup feeder.

8. The self-propelled seedling transplanter according to claim 1, characterized in that: The front of the chassis is equipped with a self-propelled locomotive, which is equipped with an engine; The front section of the frame is equipped with a front drive axle, which drives the front wheels, and the front wheels are equipped with a front steering gear; The engine drives the front drive axle via the gearbox; The rear section of the frame is equipped with a rear drive axle, which drives the rear wheels, and the rear wheels are equipped with a rear wheel steering mechanism; The engine drives the transfer case, one power source drives the lifting platform, another power source drives the trencher installed in the lifting work frame, and the third power source drives the rear drive axle.

9. The self-propelled seedling transplanter according to claim 1, characterized in that: In the non-drive lifting operation state of the elevator, the lifting work frame has passive free travel in the vertical direction within the inner space of the frame.

Images