Hole planting device for asparagus lettuce plant pot seedlings

Abstract

The utility model discloses a hole planting device for asparagus lettuce plant pot seedlings, which belongs to the technical field of agricultural machinery and comprises a planting frame, a chain type cultivation component, a lifting seedling conveying component, a rotary seedling separating component, a duckbilled seedling planting mechanism, a fertilizing mechanism and a soil covering mechanism. The planting frame comprises a movable chassis, and a seedling conveying bracket and a duckbilled seedling planting bracket which are connected to the movable chassis; the chain type cultivation assembly comprises a rotary tillage main shaft, a rotary tillage cutter sleeved on the rotary tillage main shaft, a ridging main shaft and a ridging crankshaft sleeved on the ridging main shaft, and the rotary tillage main shaft is in transmission connection with the ridging main shaft through a chain transmission mechanism; the lifting seedling conveying assembly and the rotary seedling separating assembly are correspondingly arranged on the seedling conveying support, the lifting seedling conveying assembly comprises a gear rack lifting mechanism and an inclined ratchet wheel baffle ring mechanism, and the rotary seedling conveying assembly comprises a rotary seedling throwing mechanism and a seedling pushing cam mechanism; the duckbilled seedling planting mechanism rotates to insert a duckbilled device into soil to plant seedlings; the hole planting device can integrate rotary tillage, ridging, seedling planting, fertilization and soil covering, and the planting efficiency of pot seedlings is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural machinery, in particular to a hole planting device for pot seedlings of lettuce plants. Background Art

[0002] Lettuce, also known as lettuce, is a variety of lettuce in the genus Lactuca in the Asteraceae family that can form fleshy tender stems. It is an annual or biennial herb with a height of 25 to 100 cm. Lettuce requires a cool climate during its growth period, is intolerant to severe cold and avoids high temperatures and heat. It grows slowly in the seedling stage, and the optimal growth temperature required during the tender stem hypertrophy period is 11 to 18°C. Therefore, spring lettuce is mostly planted by seedling transplanting, and the sowing period must be timely. When planting, choose loam with good drainage conditions, apply 4,000 to 5,000 kilograms of decomposed organic fertilizer per mu, deep plow and level, and apply it in a high ridge with a width of 1.2 to 1.5 meters. The traditional lettuce planting process is relatively cumbersome, requiring manual land reclamation and ridge making, seedling transplanting, watering and planting, which is labor-intensive and inefficient.

[0003] In view of this, the use of mechanical planting of lettuce can greatly improve the planting efficiency. The main research and development direction in China is mostly to use duckbill devices to complete the planting of seedlings. Among them, the hand-held semi-automatic transplanter designed by Li Huishuang of Xinjiang Agricultural University and Ma Yuehong of Xinjiang Academy of Agricultural Sciences, when the duckbill planter enters the soil to a specific depth, the duckbill must be unfolded to complete the seedling transplanting task. This process is achieved by rotating the cam in the duckbill opening and closing control mechanism and driving the pull wire to realize the opening and closing movement of the duckbill (Li Huishuang. Optimization Design of Planting Mechanism of Greenhouse Hand-held Transplanter [D]. Supervisor: Ma Yuehong; Guo Hui. Xinjiang Agricultural University, 2023). The degree of automation of this automatic transplanter needs to be further improved. There are few lettuce harvesting machines abroad. The transplanters developed by Japan are highly accurate and professional, but some transplanters are only suitable for pot seedlings of a single variety due to excessive requirements, and can only perform single-row transplanting, with low efficiency. Utility Model Content

[0004] Technical problem to be solved: In view of the problems in the background technology of low automation of automatic transplanters and narrow adaptability of planting plant seedlings, the utility model provides a hole planting device for lettuce plant seedlings in pots. The hole planting device has a high degree of automation and can be used for the efficient planting of lettuce, tobacco and other seedlings in pots.

[0005] Technical solution: The utility model discloses a hole-seeding device for potted seedlings of lettuce plants, the hole-seeding device comprising:

[0006] A planting frame, the planting frame comprising a mobile chassis, a seedling transport bracket is arranged in the middle of the mobile chassis, and a duckbill seedling support, a fertilization vertical support, and a soil covering cantilever support are arranged symmetrically in sequence at the rear of the mobile chassis relative to the midline;

[0007] A chain tilling assembly, wherein the chain tilling assembly is fixedly arranged at the front end of the mobile chassis; the chain tilling assembly comprises a rotary tilling spindle and at least two rotary tilling cutters sleeved on the rotary tilling spindle, a ridging spindle and a ridging crankshaft sleeved on the ridging spindle, and the rotary tilling spindle is transmission-connected to the ridging spindle through a chain transmission mechanism;

[0008] A lifting and transporting seedling assembly, wherein the lifting and transporting seedling assembly is fixedly arranged on the seedling transporting bracket; the lifting and transporting seedling assembly comprises a gear rack lifting mechanism and a lifting nursery connected to the top of the gear rack lifting mechanism, and an inclined ratchet retaining ring mechanism is arranged above the lifting nursery to limit its working position;

[0009] A rotary seedling transport component, wherein the rotary seedling transport component is divided into two groups at the top of the seedling transport bracket; the rotary seedling transport component includes a rotary seedling throwing mechanism and a seedling pushing cam mechanism; the rotary seedling throwing mechanism includes a seedling transporter, a seedling transporter bracket and a seedling transport driving motor; the seedling pushing cam mechanism includes a seedling pushing cam and a seedling pushing driving motor, and the seedling pushing driving motor rotates to drive the seedling pushing cam to rotate, push the plant seedlings into the seedling transporter one by one, and realize the rotary transportation of the plant seedlings;

[0010] A duckbill seedling planting mechanism, the duckbill seedling planting mechanism comprises two groups respectively arranged on duckbill seedling planting brackets, the duckbill seedling planting mechanism is correspondingly arranged below the seedling transporter to receive the plant seedlings and implant them into the soil;

[0011] A fertilizing mechanism, the fertilizing mechanism includes two groups respectively arranged at the top of the fertilizing vertical support, the fertilizing mechanism is correspondingly arranged above the duckbill seedling planting mechanism and delivers the fertilizer to the duckbill seedling planting mechanism at a fixed point;

[0012] The soil covering mechanism comprises two groups which are respectively arranged on the soil covering cantilever brackets, and the soil covering mechanism is correspondingly arranged at the rear side of the duckbill seedling planting mechanism and covers the planting holes with soil.

[0013] Preferably, the rotary tiller tool comprises a flange coupling and two sets of handle connecting plates fixedly connected to the flange coupling, four rotary tiller handles are arranged at equal intervals in the circumferential direction of the handle connecting plates, and the top of the rotary tiller handle is fixedly connected to the tiller blade by an angle code; two adjacent tiller blades are distributed on opposite sides of the rotary tiller handle.

[0014] Preferably, the ridging crankshaft comprises two groups of drainage channel ridging wheels and ridging wheels which are arranged opposite to each other on the outer side and the inner side, and at least one crankshaft ring is arranged between the drainage channel ridging wheels and the ridging wheels.

[0015] Preferably, the chain drive mechanism includes a rotary tillage driven sprocket mounted on the rotary tillage main shaft, a ridging driven sprocket mounted on the ridging main shaft, and a driving sprocket, and the driving sprocket is transmission-connected to the sprocket drive motor via a first coupling; the driving sprocket is transmission-connected to the rotary tillage driven sprocket and the ridging driven sprocket via a transmission chain.

[0016] Preferably, the gear rack lifting mechanism comprises a lifting drive motor arranged on the seedling transport bracket, the lifting drive motor is connected to the driving rod through a second coupling, and the driving rod is provided with two driving gears, and one side of the driving gear is meshedly connected with a transmission rack;

[0017] The lifting nursery comprises a lifting plate fixedly connected to the top of two transmission racks through a reinforcement block, the top surface of the lifting plate is fixedly supported by a seedling tray through a support column, and the two ends of the seedling tray are respectively provided with a limited notch on one side corresponding to the rotating seedling transport assembly;

[0018] The seedling raising tray is different from a gear rack lifting mechanism and is correspondingly provided with a slide rail slider mechanism connected with the seedling transport bracket on one side.

[0019] Preferably, the inclined ratchet retaining ring mechanism includes a support frame arranged at the top of the seedling transport bracket, the four inner corners of the support frame are correspondingly connected to bearing brackets, and a ratchet shaft is correspondingly connected between two groups of bearing brackets arranged along the width of the support frame, and at least two ratchet retaining rings are mounted on the ratchet shaft, and limiting blocks are correspondingly arranged on the top of the support frame and the ratchet retaining ring; the seedling tray pushes the ratchet retaining ring upward to flip over and is supported on the ratchet retaining ring.

[0020] Preferably, the seedling transporter bracket is a semicircular structure, and the side corresponding to the seedling tray is opened;

[0021] The seedling transporter is a disc structure, and a plurality of seedling transport slots are evenly distributed in the circumferential direction thereof. The seedling transporter is rotatably connected in the seedling transporter bracket; the seedling transport drive motor is correspondingly connected to the lower side of the seedling transporter through a reducer and drives the seedling transporter to rotate in the seedling transporter bracket;

[0022] The seedling pushing cam is correspondingly arranged on one side of the limiting notch of the seedling raising tray and is correspondingly arranged with the seedling transporting slot, and the seedling pushing driving motor is correspondingly connected to the lower end of the seedling pushing cam.

[0023] Preferably, the duckbill seedling planting mechanism comprises a duckbill seedling planting drive motor arranged on a duckbill seedling planting bracket; the duckbill seedling planting drive motor is connected to the concentric disk rotating shaft through a set of bevel gears, a flange is installed at the far end of the concentric disk rotating shaft, and the flange is fixedly connected to the concentric disk;

[0024] Four duckbills and four plastic blocking rods corresponding to the duckbills are arranged at equal intervals on the inner side of the concentric disk, and four horizontal connectors are arranged on the outer side of the concentric disk corresponding to the four duckbills, and the duckbills are rotatably connected in the horizontal connectors through supporting connecting rods;

[0025] The other ends of the four horizontal connectors are connected to an eccentric disk, and a three-pulley group is arranged on the inner circle of the eccentric disk. The center of the three-pulley group is for the concentric disk rotating axis to pass through, and when the eccentric disk rotates, it is supported by the three-pulley group and rotates around the concentric disk rotating axis.

[0026] Preferably, the duckbill comprises a fixed duckbill flap and a movable duckbill flap, and the fixed duckbill flap and the movable duckbill flap are connected by a spring;

[0027] A supporting connecting rod is arranged at the upper end of the fixed duckbill valve, the end of the supporting connecting rod is in a straight slot shape, and the supporting connecting rod passes through the concentric disk and is transmission-connected to the horizontal connector;

[0028] A lever is provided on one side of the movable duckbill flap, and the lever abuts against the plastic stop rod to drive the movable duckbill flap to separate and open from the fixed duckbill flap.

[0029] Preferably, the fertilizing mechanism comprises a fertilizing basin and a feeder rotatably connected in the fertilizing basin, and a feeder opening is provided in the circumferential direction of the bottom surface of the fertilizing basin;

[0030] The feeder comprises a feeder thumbwheel rotatably connected to the fertilizer basin and a feeder motor drivingly connected to the feeder thumbwheel.

[0031] Compared with the prior art, the utility model has the following beneficial effects:

[0032] 1. The hole planting device of the utility model has a high degree of automation and can be used for the efficient planting of pot seedlings such as lettuce and tobacco leaves. It can meet the planting steps of rotary tillage, ridge formation, planting, fertilization, and soil covering in one go, thereby improving the planting efficiency of pot seedlings.

[0033] 2. The hole planting device combines rotary tillage and ridge raising with pot seedling planting. The rotary tillage tool re-tills the ridge slope before planting, and then uses the ridge raising crankshaft to re-ridge to prevent soil compaction that makes it difficult to plant seedlings, and turns up the deep soil to ensure that the plants have sufficient fertility for growth;

[0034] 3. The seedling lifting and transporting assembly adopts a gear rack lifter and an inclined ratchet baffle ring mechanism to cooperate with each other to realize the lifting drive and limit of the seedling tray; the inclined ratchet baffle ring mechanism uses the thrust when the seedling tray rises and the gravity when the seedling tray descends to control the rotation angle of the ratchet baffle ring. The ratchet baffle ring can only rotate in one direction, so when it descends, it will be stuck on the limit block when it turns to the other side. This setting can place multiple seedling trays to improve planting efficiency. At the same time, the ratchet baffle ring can limit the seedling tray for the next step;

[0035] 4. The rotary seedling transport component adopts the lettuce seedling planting technology, which can connect each lettuce seedling through a paper pot. After the seedling pushing cam pushes a plant seedling into the pot, the next plant seedling will be pulled by the paper belt and move with it, and then the seedling separation and planting operation will be carried out;

[0036] 5. The duckbill seedling planting mechanism adopts the structure of concentric disc and eccentric disc. The duckbill on the concentric disc and the plastic baffle on the eccentric disc work together. Due to the eccentric setting, the plastic baffle always reaches the lowest planting position before the duckbill, and then drives the duckbill to open for planting. The structure is ingenious, and the four duckbill cyclic planting actions can improve the planting efficiency;

[0037] 6. The duckbill adopts a single-sided opening and closing duckbill, which can effectively ensure the uprightness of the plant. At the same time, it uses the fixed duckbill petals to contact the soil to expand the soil, making it easy for the movable duckbill petals to open and close. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a schematic diagram of the three-dimensional structure of the hole seeding device of the utility model;

[0039] Figure 2 for Figure 1 A top view of the structure of the medium-hole seeding device;

[0040] Figure 3 for Figure 1 The main view of the structure of the middle hole planting device;

[0041] Figure 4 for Figure 3 The main view of the center hole planting device along the half-width structure of the planting frame;

[0042] Figure 5 for Figure 1 Schematic diagram of the frame structure of the planting vehicle;

[0043] Figure 6 for Figure 5 Schematic diagram of the structure of the rotary tillage tool;

[0044] Figure 7 for Figure 5 Schematic diagram of the structure of the middle ridging component;

[0045] Figure 8 for Figure 1 Schematic diagram of the installation structure of the middle lifting seedling transport component and the rotating seedling transport component;

[0046] Fig. 9 for Figure 8 Schematic diagram of the three-dimensional structure of the mid-lift seedling transport component;

[0047] Fig.10 for Figure 8 Schematic diagram of the structure of the medium tilt ratchet retaining ring mechanism;

[0048] Fig.11 for Figure 8 Schematic diagram of the installation structure of the central rotating seedling transport assembly and the inclined ratchet retaining ring mechanism;

[0049] Fig.12 for Figure 1 Schematic diagram of the three-dimensional structure of the middle duckbill seedling planting mechanism;

[0050] Fig.13 for Fig.12 A structural diagram of the middle duckbill seedling planting mechanism from another perspective;

[0051] Fig.14 for Fig.13 Schematic diagram of the structure of the middle duckbill;

[0052] Fig.15 for Figure 2 Schematic diagram of the installation structure of the fertilizing mechanism and the soil covering mechanism;

[0053] Fig.16 for Figure 2 A schematic diagram of the structure enlargement in the middle;

[0054] Fig.17 for Figure 2 A magnified schematic diagram of the structure at B in the middle;

[0055] Fig.18 for Figure 2 Schematic diagram of the structure of the fertilization mechanism.

[0056] Reference numerals:

[0057] 100. Hole seeding device;

[0058] 1. Planting frame; 11. Mobile chassis; 12. Travel wheels; 13. Travel drive motor; 14. Seedling transport bracket; 15. Duckbill seedling bracket; 16. Fertilization vertical bracket; 17. Soil covering cantilever bracket;

[0059] 2. Chain tillage assembly; 21. Rotary tillage tool; 211. Flange coupling; 212. Knife handle connecting plate; 213. Rotary tillage tool handle; 214. Angle code; 215. Tillage knife; 22. Chain transmission mechanism; 221. Rotary tillage driven sprocket; 222. Ridge driven sprocket; 223. Driving sprocket; 224. Sprocket drive motor; 225. First coupling; 226. Transmission chain; 23. Ridge crankshaft; 231. Drainage channel ridging wheel; 232. Crankshaft ring; 233. Ridge wheel; 24. Rotary tillage spindle; 25. Ridge spindle;

[0060] 3. Lifting seedling transport assembly; 31. Gear rack lifting mechanism; 311. Lifting drive motor; 312. Second coupling; 313. Driving gear; 314. Transmission rack; 315. Driving rod;

[0061] 32. Inclined ratchet retaining ring mechanism; 321. Support frame; 322. Limit block; 323. Bearing bracket; 324. Ratchet shaft; 325. Ratchet retaining ring;

[0062] 33. Lifting nursery; 331. Lifting plate; 332. Support column; 333. Seedling tray; 334. Reinforcement block; 335. Limiting notch;

[0063] 34. Slide rail and slider mechanism;

[0064] 4. Rotating seedling transport assembly; 41. Rotating seedling delivery mechanism; 42. Seedling pushing cam mechanism; 43. Seedling transport device; 431. Seedling transport slot; 44. Seedling transport device bracket; 45. Seedling transport drive motor; 46. Seedling pushing cam; 47. Seedling pushing drive motor;

[0065] 5. Duckbill seedling planting mechanism; 51. Concentric disk; 511. Duckbill seedling planting driving motor; 512. Bevel gear; 513. Concentric disk rotating shaft; 514. Flange; 515. Vertical bearing seat; 516. Plastic stop rod; 52. Eccentric disk; 53. Horizontal connector; 54. Three-pulley group; 55. Duckbill device; 551. Fixed duckbill flap; 552. Movable duckbill flap; 553. Support connecting rod; 554. Push rod;

[0066] 6. Fertilizing mechanism; 61. Fertilizing basin; 611. Feeding port; 62. Feeding device; 621. Feeding motor; 622. Feeding dial;

[0067] 7. Soil covering mechanism; 71. Soil covering wheel rotating rod; 72. Soil covering wheel. DETAILED DESCRIPTION

[0068] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the following will be combined with the attached Figures 1 to 18The technical scheme of the embodiment of the utility model is clearly and completely described. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the described embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of the utility model.

[0069] like Figures 1 to 5 As shown, the utility model discloses a hole planting device for pot seedlings of lettuce plants, and the hole planting device 100 includes a planting frame 1, a chain tillage component 2, a lifting seedling transport component 3, a rotating seedling transport component 4, a duckbill seedling planting mechanism 5, a fertilization mechanism 6 and a soil covering mechanism 7. The planting frame 1 includes a mobile chassis 11, a seedling transport bracket 14 is arranged in the middle of the mobile chassis 11, and a duckbill seedling planting bracket 15, a fertilization vertical bracket 16, and a soil covering cantilever bracket 17 are arranged symmetrically in sequence relative to the midline at the rear of the mobile chassis 11. The mobile chassis 11, the seedling transport bracket 14, the duckbill seedling planting bracket 15, the fertilization vertical bracket 16, and the soil covering cantilever bracket 17 are all assembled with aluminum alloy profiles, and the aluminum alloy profiles can be assembled with fixed sliders through fixing screws. Travel wheels 12 are respectively arranged on both sides of the front and rear ends of the mobile chassis 11, and the travel wheels arranged at the rear end of the mobile chassis 11 are matched with a travel drive motor 13, and the planting frame 1 can be driven to travel by the travel drive motor 13.

[0070] like Figures 6 and 7 As shown, the chain tilling assembly 2 is fixedly arranged at the front end of the mobile chassis 11; the chain tilling assembly 2 includes a rotary tilling spindle 24 and at least two rotary tilling tools 21 mounted on the rotary tilling spindle 24, a ridging spindle 25 and a ridging crankshaft 23 mounted on the ridging spindle 25, and the rotary tilling spindle 24 is transmission-connected to the ridging spindle 25 via a chain transmission mechanism 22. Specifically, the rotary tillage main shaft 24 and the rotary tillage tool 21 are correspondingly arranged at the front end of the mobile chassis 11, and the ridging main shaft 25 and the ridging crankshaft 23 are correspondingly arranged in the middle of the mobile chassis 11; the chain transmission mechanism 22 includes a rotary tillage driven sprocket 221 mounted on the rotary tillage main shaft 24, a ridging driven sprocket 222 mounted on the ridging main shaft 25, and a driving sprocket 223, and the driving sprocket 223 is connected to the sprocket drive motor 224 through a first coupling 225; the driving sprocket 223 is connected to the rotary tillage driven sprocket 221 and the ridging driven sprocket 222 through a transmission chain 226. During operation, the sprocket drive motor 224 cooperates with the active sprocket 223 and the transmission chain 226 to drive the rotary tillage driven sprocket 221 and the ridging driven sprocket 222 to rotate, and then drives the rotary tillage main shaft 24 and the ridging main shaft 25 to rotate, thereby driving the rotary tillage tool 21 to perform rotary tillage and the ridging crankshaft 23 to form ridges, completing the tillage and ridging operations of the existing land, which is convenient for subsequent planting.

[0071] In a preferred embodiment, if Figure 6As shown, the rotary tillage tool 21 includes a flange coupling 211 and two sets of handle connection plates 212 fixedly connected to the flange coupling 211. The handle connection plate 212 is provided with four rotary tillage handles 213 at equal intervals in the circumferential direction. The top of the rotary tillage handle 213 is fixedly connected to a tillage blade 215 through an angle code 214. Two adjacent tillage blades 215 are distributed on different sides of the rotary tillage handle 213. The two sets of rotary tillage tools 21 correspond to two rows of ridges, and can efficiently perform rotary tillage and loosening of the soil and cut and crush the roots of the lettuce.

[0072] In a preferred embodiment, if Figure 7 As shown, the ridging crankshaft 23 includes two groups of drainage channel ridging wheels 231 and ridging wheels 233 arranged opposite to each other on the outside and inside, and at least one crankshaft ring 232 is arranged between the drainage channel ridging wheels 231 and the ridging wheels 233. The ridging crankshaft 23 includes drainage channel ridging wheels 231 arranged along both ends of the ridging main axis 25 and two ridging wheels 233 arranged adjacent to each other in the middle, and two crankshaft rings 232 are arranged between the drainage channel ridging wheels 231 and the corresponding ridging wheels 233. Different widths of ridges can be applied by installing different numbers of crankshaft rings 232; after the rotary tillage cutter 21 completes the rotary tillage and loosening of the land, the ridging crankshaft 23 can apply two groups of ridges at a time.

[0073] like Figures 1 to 4 and Figures 8-10 As shown, the seedling transport lifting assembly 3 is fixedly arranged on the seedling transport bracket 14; the seedling transport lifting assembly 3 includes a gear rack lifting mechanism 31 and a lifting nursery 33 connected to the top of the gear rack lifting mechanism 31, and an inclined ratchet retaining ring mechanism 32 is arranged above the lifting nursery 33 to limit its working position. Specifically, the rack and pinion lifting mechanism 31 includes a lifting drive motor 311 arranged on the seedling transport bracket 14, the lifting drive motor 311 is connected to the driving rod 315 through a second coupling 312, and the driving rod 315 is provided with two driving gears 313, and one side of the driving gear 313 is meshed and connected with a transmission rack 314; the lifting nursery 33 includes a lifting plate 331 fixedly connected to the top of the two transmission racks 314 through a reinforcement block 334, and the top surface of the lifting plate 331 is fixedly supported by a seedling tray 333 through a support column 332, and the two ends of the seedling tray 333 are respectively provided with a limiting slot 335 on one side corresponding to the rotating seedling transport component 4; the seedling tray 333 is different from the rack and pinion lifting mechanism 31 and is provided with a slide rail slider mechanism 34 connected to the seedling transport bracket 14 on one side thereof. During operation, the lifting drive motor 311 drives the driving gear 313 to rotate through the driving rod 315, and then drives the seedling tray 333 to perform lifting movement in the vertical direction through the transmission rack 314; the slide rail slider mechanism 34 uses a slide rail connected to the seedling transport bracket 14 and a slider connected to the seedling tray 333 to provide stable support for the lifting of the seedling tray 333.

[0074] like Fig.10As shown, the inclined ratchet retaining ring mechanism 32 includes a support frame 321 arranged at the top of the seedling transport bracket 14, and the four inner corners of the support frame 321 are correspondingly connected with bearing brackets 323, and the two groups of bearing brackets 323 arranged along the width of the support frame 321 are correspondingly connected with a ratchet shaft 324, and three ratchet retaining rings 325 are mounted on the ratchet shaft 324. A limiting block 322 is correspondingly arranged at the top of the support frame 321 and the ratchet retaining ring 325. The lifting drive motor 311 rotates forward to drive the seedling tray 333 to rise, pushing the ratchet retaining ring 325 to flip upward, and the protruding part of the tail of the ratchet retaining ring 325 is stuck with the limit block 322, so that the seedling tray 333 is supported on the ratchet retaining ring 325; when the seedling tray 333 reaches a certain height, the lifting drive motor 311 rotates reversely to drive the seedling tray 333 to descend. When the seedling tray 333 descends, the ratchet retaining ring 325 naturally descends under gravity and can flip downward until the protruding part of the tail of the ratchet retaining ring 325 is stuck with the limit block 322, thereby placing the seedling tray 333. The limit block 322 forms an angle of 6° with the horizontal direction, which ensures that the seedling tray 333 is in an inclined state, which is convenient for the subsequent removal and planting of seedlings in pots (paper pot seedlings).

[0075] like Figure 8 , Fig.11 and Fig.16As shown, the rotary seedling transport assembly 4 is divided into two groups at the top of the seedling transport bracket 14; the rotary seedling transport assembly 4 includes a rotary seedling throwing mechanism 41 and a seedling pushing cam mechanism 42; the rotary seedling throwing mechanism 41 includes a seedling transporter 43, a seedling transporter bracket 44 and a seedling transport driving motor 45, the seedling transporter bracket 44 is a semicircular structure, and its side corresponding to the seedling tray 333 is an opening; the seedling transporter 43 is a disc structure, and a plurality of seedling transport slots 431 are evenly distributed in its circumferential direction, the seedling transporter 43 is rotatably connected in the seedling transporter bracket 44, the seedling transport driving motor 45 is correspondingly connected to the lower side of the seedling transporter 43 through a reducer, the seedling transport driving motor 45 can select a servo motor or a stepping motor to realize the power output function, and the seedling transport driving motor 45 drives the seedling transporter 43 to rotate in the seedling transporter bracket 44. The seedling pushing cam mechanism 42 includes a seedling pushing cam 46 and a seedling pushing drive motor 47. The seedling pushing cam 46 is correspondingly arranged on one side of the limiting slot 335 of the seedling tray 333 and is correspondingly arranged with the seedling transport slot 431. The seedling pushing drive motor 47 is correspondingly connected to the lower end of the seedling pushing cam 46. The seedling pushing drive motor 47 rotates to drive the seedling pushing cam 46 to rotate and push the plant seedlings one by one into the seedling transport slot 431 of the seedling transporter 43 to realize the rotational transportation of the plant seedlings. During operation, after the seedling tray 333 is limited by the ratchet retaining ring 325, the seedling pushing drive motor 47 drives the seedling pushing cam 46 to rotate and push the lettuce plant seedlings into the seedling transport slot 431 of the seedling transport device 43. The lettuce plant seedlings are connected by paper pushers to form a chain structure. The lettuce plant seedlings enter the seedling transport device 43 one after another through the limiting slot 335 of the seedling tray 333. In this process, the seedling pushing cam 46 can cut off the connected paper pusher when pushing each plant seedling; the seedling transport drive motor 45 drives the seedling transport device 43 to rotate, and the plant seedlings in the seedling transport slot 431 rotate accordingly. When it rotates to a certain angle, the plant seedlings fall from the hole on the seedling transport device bracket 44 into the duckbill seedling planting mechanism 5 to complete the seedling planting action.

[0076] like Figures 12-14As shown, the duckbill seedling planting mechanism 5 includes two groups respectively arranged on the duckbill seedling planting bracket 15, and the duckbill seedling planting mechanism 5 is correspondingly arranged below the seedling transporter 43 to receive the plant seedlings and plant them into the soil. Specifically, the duckbill seedling planting mechanism 5 includes a duckbill seedling planting drive motor 511 arranged on the duckbill seedling planting bracket 15; the duckbill seedling planting drive motor 511 is transmission-connected to the concentric disk rotating shaft 513 through a group of bevel gears 512, and a flange 514 is installed at the far end of the concentric disk rotating shaft 513, and the flange 514 is fixedly connected to the concentric disk 51; a vertical bearing seat 515 for supporting the concentric disk rotating shaft 513 is arranged on the duckbill seedling planting bracket 15. Four duckbills 55 and four spring stop rods 516 corresponding to the duckbills 55 are arranged at equal intervals on the inner side of the concentric disk 51. Four horizontal connectors 53 are arranged on the outer side of the concentric disk 51 corresponding to the four duckbills 55. The duckbills 55 are rotatably connected in the horizontal connectors 53 through supporting connecting rods 553. The other ends of the four horizontal connectors 53 are connected to the eccentric disk 52. A three-pulley group 54 is arranged on the inner circle of the eccentric disk 52. The center of the three-pulley group 54 is for the concentric disk rotating shaft 513 to pass through. The eccentric disk 52 is supported by the three-pulley group 54 to establish a four-bar mechanism. When the eccentric disk 52 rotates, it is supported by the three-pulley group 54 and rotates around the concentric disk rotating shaft 513. During operation, the duckbill seedling planting driving motor 511 drives the concentric disk rotating shaft 513 through the bevel gear 512, and the concentric disk rotating shaft 513 drives the concentric disk 51 to rotate through the flange 514. Four duckbills 55 and four horizontal connectors 53 are arranged at equal intervals on the inner and outer sides of the concentric disk 51. An eccentric disk 52 is fixedly arranged on the other side of the horizontal connector 53. The rotation of the concentric disk rotating shaft 513 drives the duckbill seedling planting mechanism 5 to move. The horizontal connector 53 ensures that the duckbills 55 are always in a plumb state during the rotation of the concentric disk 51 and will not be in contact with the soil. The duckbill 55 is deflected by the force exerted on the soil, so that after the duckbill 55 at the highest point of the concentric disk 51 receives the plant seedlings dropped by the seedling transporter 43, the concentric disk 51 rotates to the lowest point and is inserted into the soil to complete the planting. During this process, the four duckbill 55 rotate to the highest point one by one with the rotation of the concentric disk 51 to receive the plant seedlings, and then rotate to the lowest point one by one to complete the planting, effectively ensuring the planting spacing, improving the accuracy of agricultural production, and facilitating subsequent mechanized harvesting. Through the coordinated work of various devices, the hole planting of lettuce plant seedlings can be achieved efficiently and accurately.

[0077] like Figures 13 and 14As shown, the duckbill device 55 includes a fixed duckbill flap 551 and a movable duckbill flap 552, and the fixed duckbill flap 551 and the movable duckbill flap 552 are connected by a spring; a supporting connecting rod 553 is arranged on the upper end of the fixed duckbill flap 551, and the end of the supporting connecting rod 553 is in a straight slot shape, and the supporting connecting rod 553 passes through the concentric disk 51 and is transmission-connected with the horizontal connector 53; a lever 554 is arranged on one side of the movable duckbill flap 552, and the lever 554 abuts against the plastic stop rod 516 to drive the movable duckbill flap 552 to separate and open from the fixed duckbill flap 551. During operation, when the concentric disk 51 rotates 90°, the duckbill 55 that is about to reach the bottom reaches the bottom later than the plastic baffle 516 on the eccentric disk 52. At this time, the lever 554 of the movable duckbill flap 552 contacts the plastic baffle 516, and the duckbill 55 opens to complete the planting of the plant seedlings. As the concentric disk 51 continues to rotate, the contact area between the plastic baffle 516 and the lever 554 of the movable duckbill flap 552 gradually decreases until there is no contact area. Under the action of the spring tension, the fixed duckbill flap 551 and the movable duckbill flap 552 are closed; as the concentric disk 51 rotates, the duckbill 55 repeats this action, thereby realizing continuous and efficient planting of lettuce plant seedlings in pots.

[0078] like Fig.15 and Figures 17 and 18 As shown, the fertilization mechanism 6 includes two groups respectively arranged at the top of the fertilization vertical support 16. The fertilization mechanism 6 is correspondingly arranged above the duckbill seedling mechanism 5 and delivers the fertilizer to the duckbill seedling mechanism 5 at a fixed point. The fertilization mechanism 6 includes a fertilization basin 61 and a feeder 62 rotatably connected in the fertilization basin 61. A feed opening 611 is provided in the circumferential direction of the bottom surface of the fertilization basin 61; the feeder 62 includes a feeder thumbwheel 622 rotatably connected in the fertilization basin 61 and a feeder motor 621 transmission-connected to the feeder thumbwheel 622. When working, the feeder motor 621 drives the feeder thumbwheel 622 to rotate and delivers the fertilizer through the feed opening 611 to the duckbill 55 at the corresponding position of the concentric disk 51. The fertilizer is delivered earlier than the plant seedling, so that the fertilizer is at the bottom of the plant seedling, and then the fertilizer is exerted after the planting is completed.

[0079] like Fig.15 As shown, the soil covering mechanism 7 includes two groups respectively arranged on the soil covering cantilever bracket 17, and the soil covering mechanism 7 is correspondingly arranged at the rear side of the duckbill seedling planting mechanism 5 and covers the planting holes with soil. The soil covering cantilever bracket 17 is installed at the lower part of the fertilization vertical bracket 16, and the soil covering mechanism 7 is installed at the lower end of the soil covering cantilever bracket 17. The soil covering mechanism 7 includes a soil covering wheel rotating rod 71 and soil covering wheels 72 connected to both sides of the soil covering wheel rotating rod 71, and a V-shaped soil covering groove is formed between the two soil covering wheels 72. During operation, when the duckbill seedling planting mechanism 5 completes the seedling planting work, as the planting frame 1 moves forward, the two soil covering wheels can gather the soil expanded during planting to complete the soil covering operation.

[0080] The above are preferred implementations of the present utility model. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present utility model. These improvements and modifications should also be regarded as the protection scope of the present utility model.

Claims

1. A hole planting device for potted seedlings of lettuce plants, characterized in that: The hole seeding device (100) comprises: A planting frame (1), the planting frame (1) comprising a mobile chassis (11), a seedling transport support (14) being arranged in the middle of the mobile chassis (11), and a duckbill seedling support (15), a fertilizing vertical support (16), and a soil covering cantilever support (17) being arranged in sequence symmetrically with respect to the midline at the rear of the mobile chassis (11); A chain tilling assembly (2), the chain tilling assembly (2) being fixedly arranged at the front end of a mobile chassis (11); the chain tilling assembly (2) comprising a rotary tilling spindle (24), at least two rotary tilling cutters (21) sleeved on the rotary tilling spindle (24), a ridging spindle (25), and a ridging crankshaft (23) sleeved on the ridging spindle (25); the rotary tilling spindle (24) being transmission-connected to the ridging spindle (25) via a chain transmission mechanism (22); A seedling lifting and transporting assembly (3), the seedling lifting and transporting assembly (3) being fixedly arranged on a seedling transporting support (14); the seedling lifting and transporting assembly (3) comprising a gear rack lifting mechanism (31) and a lifting nursery (33) connected to the top of the gear rack lifting mechanism (31); an inclined ratchet retaining ring mechanism (32) for limiting its working position is arranged above the lifting nursery (33); A rotary seedling transport assembly (4), wherein the rotary seedling transport assembly (4) is arranged in two groups at the top of a seedling transport bracket (14); the rotary seedling transport assembly (4) comprises a rotary seedling throwing mechanism (41) and a seedling pushing cam mechanism (42); the rotary seedling throwing mechanism (41) comprises a seedling transport device (43), a seedling transport device bracket (44) and a seedling transport driving motor (45); the seedling pushing cam mechanism (42) comprises a seedling pushing cam (46) and a seedling pushing driving motor (47); the seedling pushing driving motor (47) rotates to drive the seedling pushing cam (46) to rotate, thereby pushing plant seedlings one by one into the seedling transport device (43) and realizing rotary transport of plant seedlings; A duck-billed seedling planting mechanism (5), the duck-billed seedling planting mechanism (5) comprising two groups respectively arranged on duck-billed seedling planting supports (15), the duck-billed seedling planting mechanism (5) being arranged correspondingly below the seedling transporter (43) to receive plant seedlings and plant them into the soil; A fertilizing mechanism (6), the fertilizing mechanism (6) comprising two groups respectively arranged at the top of the fertilizing vertical support (16), the fertilizing mechanism (6) being arranged correspondingly above the duckbill seedling planting mechanism (5) and delivering chemical fertilizer to the duckbill seedling planting mechanism (5) at a fixed point; A soil covering mechanism (7), the soil covering mechanism (7) comprising two groups respectively arranged on the soil covering cantilever brackets (17), and the soil covering mechanism (7) is correspondingly arranged on the rear side of the duckbill seedling planting mechanism (5) and covers the planting holes with soil.

2. The hole planting device for potted seedlings of lettuce plants according to claim 1, characterized in that: The rotary tiller tool (21) comprises a flange coupling (211) and two groups of handle connection plates (212) fixedly connected to the flange coupling (211); four rotary tiller handles (213) are arranged at equal intervals in the circumferential direction on the handle connection plate (212); the top ends of the rotary tiller handles (213) are fixedly connected to tilling blades (215) via angle brackets (214); and two adjacently arranged tilling blades (215) are distributed on different sides of the rotary tiller handle (213).

3. The hole planting device for lettuce seedlings according to claim 2, characterized in that: The ridging crankshaft (23) comprises two groups of drainage channel ridging wheels (231) and ridging wheels (233) arranged opposite to each other on the outside and the inside, and at least one crankshaft ring body (232) is arranged between the drainage channel ridging wheels (231) and the ridging wheels (233).

4. The hole planting device for potted seedlings of lettuce plants according to claim 3, characterized in that: The chain transmission mechanism (22) comprises a rotary tillage driven sprocket (221) sleeved on a rotary tillage main shaft (24), a ridging driven sprocket (222) sleeved on a ridging main shaft (25), and a driving sprocket (223); the driving sprocket (223) is transmission-connected to a sprocket drive motor (224) via a first coupling (225); and the driving sprocket (223) is transmission-connected to the rotary tillage driven sprocket (221) and the ridging driven sprocket (222) via a transmission chain (226).

5. The hole planting device for potted seedlings of lettuce plants according to claim 1, characterized in that: The rack and pinion lifting mechanism (31) comprises a lifting drive motor (311) arranged on the seedling transport support (14); the lifting drive motor (311) is connected to a driving rod (315) via a second coupling (312); and the driving rod (315) is provided with two driving gears (313); one side of the driving gear (313) is meshedly connected to a transmission rack (314); The lifting nursery (33) comprises a lifting plate (331) fixedly connected to the top ends of two transmission racks (314) via a reinforcing block (334); a seedling tray (333) is fixedly supported on the top surface of the lifting plate (331) via a supporting column (332); and limiting notches (335) are provided at both ends of the seedling tray (333) on one side corresponding to the rotating seedling transport assembly (4); The seedling raising tray (333) is provided with a slide rail and slider mechanism (34) connected to the seedling transport bracket (14) on one side corresponding to the gear rack lifting mechanism (31).

6. The hole planting device for potted seedlings of lettuce plants according to claim 5, characterized in that: The inclined ratchet retaining ring mechanism (32) comprises a support frame (321) arranged at the top end of the seedling transport support (14); the four inner corners of the support frame (321) are correspondingly connected to bearing supports (323); two groups of bearing supports (323) arranged along the width of the support frame (321) are correspondingly connected to a ratchet shaft (324); at least two ratchet retaining rings (325) are mounted on the ratchet shaft (324); and a limiting block (322) is correspondingly arranged at the top end of the support frame (321) and the ratchet retaining ring (325); the seedling tray (333) pushes the ratchet retaining ring (325) upward to flip over and is supported on the ratchet retaining ring (325).

7. The hole planting device for potted seedlings of lettuce plants according to claim 5, characterized in that: The seedling transporter bracket (44) is a semicircular structure, and a side thereof corresponding to the seedling tray (333) is open; The seedling transporter (43) is a disc structure having a plurality of seedling transport slots (431) evenly distributed in the circumferential direction thereof; the seedling transporter (43) is rotatably connected in the seedling transporter bracket (44); the seedling transport drive motor (45) is correspondingly connected to the lower side of the seedling transporter (43) via a reducer and drives the seedling transporter (43) to rotate in the seedling transporter bracket (44); The seedling pushing cam (46) is correspondingly arranged on one side of the limiting notch (335) of the seedling raising tray (333) and is correspondingly arranged with the seedling transporting slot (431), and the seedling pushing driving motor (47) is correspondingly connected to the lower end of the seedling pushing cam (46).

8. The hole planting device for potted seedlings of lettuce plants according to claim 7, characterized in that: The duckbill seedling planting mechanism (5) comprises a duckbill seedling planting drive motor (511) arranged on a duckbill seedling planting bracket (15); the duckbill seedling planting drive motor (511) is transmission-connected to a concentric disk rotating shaft (513) via a set of bevel gears (512); a flange (514) is installed at the far end of the concentric disk rotating shaft (513); and the flange (514) is fixedly connected to the concentric disk (51); Four duckbills (55) and four plastic blocking rods (516) are arranged at equal intervals in the circumferential direction on the inner side of the concentric disk (51), and four horizontal connectors (53) are arranged on the outer side of the concentric disk (51) corresponding to the four duckbills (55). The duckbills (55) are rotatably connected to the horizontal connectors (53) via supporting connecting rods (553); The other ends of the four horizontal connectors (53) are connected to an eccentric disk (52), and a three-pulley group (54) is arranged inside the inner circle of the eccentric disk (52). The center of the three-pulley group (54) allows the concentric disk rotation axis (513) to pass through, and when the eccentric disk (52) rotates, it is supported by the three-pulley group (54) and rotates around the concentric disk rotation axis (513).

9. The hole planting device for potted seedlings of lettuce plants according to claim 8, characterized in that: The duckbill device (55) comprises a fixed duckbill flap (551) and a movable duckbill flap (552), wherein the fixed duckbill flap (551) and the movable duckbill flap (552) are connected via a spring; A supporting connecting rod (553) is provided at the upper end of the fixed duckbill flap (551), the end of the supporting connecting rod (553) is in a straight slot shape, and the supporting connecting rod (553) passes through the concentric disk (51) and is transmission-connected to the horizontal connector (53); A lever (554) is provided on one side of the movable duckbill flap (552), and the lever (554) abuts against the plastic stop rod (516) to drive the movable duckbill flap (552) and the fixed duckbill flap (551) to separate and open.

10. The hole planting device for potted seedlings of lettuce plants according to claim 9, characterized in that: The fertilizing mechanism (6) comprises a fertilizing basin (61) and a feeder (62) rotatably connected to the fertilizing basin (61); a feeder opening (611) is provided in the circumferential direction of the bottom surface of the fertilizing basin (61); The feeder (62) comprises a feeder thumbwheel (622) rotatably connected to the fertilizing basin (61) and a feeder motor (621) drivingly connected to the feeder thumbwheel (622).

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