Seedling feeding mechanism and small automatic seedling planting machine

Abstract

The seedling feeding mechanism comprises a pair of transmission rollers and a roller belt connected between the transmission rollers, the two ends of each transmission roller are fixed to a pair of longitudinal outer cross beams respectively, one end of one transmission roller is provided with a conveying mechanism synchronizing wheel, and the other end of one transmission roller is provided with a conveying mechanism synchronizing wheel. The synchronous wheel of the conveying mechanism is connected with a synchronous wheel at the power output end of the seedling conveying driving mechanism through a second synchronous wheel belt; supporting legs are arranged below the longitudinal outer cross beams, and transverse connecting blocks are arranged at the ends of the supporting legs. A basic conveying mechanism is integrated, and the device is simple in structure, small in size, high in assemblability and suitable for various planting devices.

Description

Technical Field

[0001] The utility model relates to the field of agricultural machinery, in particular to a seedling delivery mechanism and a small-scale automatic seedling planting machine. Background Art

[0002] Seedling raising and transplanting is an important link in the agricultural production process. The vast majority of agricultural products are planted using the seedling raising and transplanting method. For example, vegetables such as tomatoes, peppers, and eggplants are all raised in greenhouses before being transplanted. Therefore, fully mechanized transplanting operations are a difficult problem that the industry has been trying to overcome.

[0003] Currently, due to the limited price of agricultural machinery and the complex terrain of cultivated land, most small-scale farmers still use manual transplanting or manual seedling machines, that is, manually putting seedlings into the seedling machine and then using the manual seedling machine to plant; resulting in low planting efficiency and high labor intensity. Therefore, it is very important for those skilled in the art to design an automatic seedling delivery mechanism that can cooperate with the manual seedling machine.

[0004] Therefore, those skilled in the art are committed to developing a seedling delivery mechanism that is independently operated, can be assembled, has high overall structural strength and is small in size. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a seedling delivery mechanism which is independently operated, can be assembled, has high overall structural strength and is compact.

[0006] To achieve the above-mentioned object, the utility model provides the following technical solution: a seedling delivery mechanism, comprising a pair of transmission rollers and a roller belt connected between the transmission rollers, wherein both ends of the transmission rollers are respectively fixed to a pair of longitudinal outer cross beams, one end of one of the transmission rollers is provided with a conveying mechanism synchronous wheel, and the conveying mechanism synchronous wheel is connected to the synchronous wheel on the power output end of the seedling transport drive mechanism through a second synchronous wheel belt;

[0007] Support legs are provided below the longitudinal outer cross beams, and transverse connecting blocks are provided at the ends of the support legs.

[0008] One or more groups of roller belts are provided between the two transmission rollers. Preferably, two groups of roller belts are provided between the two transmission rollers; the two groups of roller belts are respectively arranged on both sides of the transmission roller; in order to enhance the structural stability of the roller belt and adapt to different terrains, a rib mounting column is provided on the inner side of the roller belt. In order to prevent the plants from falling from the side of the roller belt during transportation, the rib mounting column and the longitudinal outer crossbeam are provided with L-shaped ribs, and the L-shaped ribs are provided along the side of the roller belt. In order to facilitate the assembly and replacement of the transmission roller on the longitudinal outer crossbeam, a roller mounting block is provided at the end of the longitudinal outer crossbeam, one end of the roller mounting block is connected to the outer side wall of the longitudinal outer crossbeam, and the other end is provided with a roller mounting hole, and the end of the transmission roller is installed in the roller mounting hole; correspondingly, the synchronous wheel of the conveying mechanism is provided on the outside of the roller mounting block. In order to minimize the volume of the entire seedling delivery mechanism while ensuring the delivery power, a drive mechanism mounting plate is also provided on the outer side of the longitudinal outer crossbeam. The drive mechanism mounting plate is arranged on the same side and adjacent to the roller mounting block provided with the synchronous wheel of the delivery mechanism; the upper end of the drive mechanism mounting plate is connected to the outer side of the longitudinal outer crossbeam, and the inner side of the lower end is connected to the seedling transport drive mechanism. The synchronous wheel on the power output end of the seedling transport drive mechanism is connected to the synchronous wheel of the delivery mechanism via a second synchronous wheel belt. In order to ensure the structural stability of the entire seedling delivery mechanism after assembly, at least two of the support legs are provided under each of the longitudinal outer crossbeams. In order to further improve the structural strength of the entire seedling delivery mechanism base frame, an extrusion angle column is provided at the vertical intersection of the support legs and the longitudinal outer crossbeam. In order to facilitate the fixing of the drive motor circuit, a clamping coil is provided in the extrusion angle column.

[0009] A small-scale automatic seedling planting machine comprises a seedling planting device and a plant conveying mechanism. The plant conveying mechanism is the above-mentioned seedling conveying mechanism. The seedling planting device is provided with a feeding bucket, and the end of the roller belt is located directly above the feeding bucket.

[0010] Beneficial effects

[0011] The utility model realizes the automatic conveying function of plants by cooperating with a transmission roller and a roller belt, and equipping a transmission roller with a synchronous wheel motor as the power source of the transmission roller; at the same time, the entire transmission component is carried by the longitudinal outer cross beam and the supporting feet, so that the entire seedling conveying mechanism becomes an independently operated unit, which can be assembled on various seedling planting agricultural machinery and manual planters; the entire seedling conveying mechanism has a simple structure and high strength, and can adapt to various complex terrains; and it is small in size and very suitable for small and medium-sized agricultural machinery; in addition, in order to address the problem of low conveying and planting efficiency caused by the short length of the transmission belt, we can set multiple sets of roller belts between the two transmission rollers according to the actual number of planting devices of agricultural machinery, so as to make up for the defect of low conveying efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the three-dimensional structure of the automatic seedling planting machine of the present utility model;

[0013] Figure 2 for Figure 1 Schematic diagram of the three-dimensional structure from the left perspective;

[0014] Figure 3 for Figure 2 Schematic diagram of the right view structure;

[0015] Figure 4 for Figure 1 Schematic diagram of the top view structure;

[0016] Figure 5 for Figure 1 Schematic diagram of the three-dimensional structure of the medium-load vehicle;

[0017] Figure 6 for Figure 5 Schematic diagram of the three-dimensional structure from the upper right perspective;

[0018] Figure 7 for Figure 6 Schematic diagram of the enlarged structure at A in the middle;

[0019] Figure 8 for Figure 5 The main view;

[0020] Figure 9 for Figure 1 Schematic diagram of the three-dimensional structure of the planting device;

[0021] Figure 10 A front view of a planting device with a planting dispenser installed on one side and without the planting dispenser installed on the other side;

[0022] Figure 11 for Figure 9 Schematic diagram of the three-dimensional structure from the bottom perspective;

[0023] Figure 12 for Figure 11 Schematic diagram of the enlarged structure at F in the middle;

[0024] Figure 13 for Figure 1 Schematic diagram of the three-dimensional structure of the middle opening drive mechanism

[0025] Figure 14 for Figure 13 Schematic diagram of the enlarged structure at B in the middle;

[0026] Figure 15 for Figure 1 Schematic diagram of the three-dimensional structure of the plant conveying mechanism;

[0027] Figure 16 FIG15 is a schematic diagram of a three-dimensional structure from another perspective;

[0028] Figure 17 FIG15 is a schematic diagram of the three-dimensional structure when viewed from above;

[0029] Figure 18 It is a schematic diagram of the main structure of Figure 15;

[0030] Figure 19 Schematic diagram of the three-dimensional structure of the soil covering mechanism;

[0031] Figure 20 It is a schematic diagram of the three-dimensional structure of the duckbill opening piece;

[0032] In the picture:

[0033] 100-carrying vehicle;

[0034] 110 - bottom frame; 110a - first planting device installation area; 110b - covering mechanism installation area; 111 - bottom frame; 112 - bottom crossbeam; 113 - bottom short vertical beam;

[0035] 120 - upper vehicle frame; 120a - second planting device installation area; 120b - plant conveying mechanism installation area; 121 - upper vehicle frame;

[0036] 130 - driving wheel; 131 - tie rod; 132 - frame drive device; 134 - I-shaped connector; 135 - U-shaped fork; 136 - structural reinforcement plate; 137 - tilting link;

[0037] 140-Hand holding putter.

[0038] 200-Planting device

[0039] 210-planting dispenser; 211-feeding bucket; 212-opener;

[0040] 220 - moving mechanism; 221 - screw nut; 222 - ball screw; 223 - connecting cross plate; 224 - mounting frame; 225a - first right-angle connecting plate; 225b - second right-angle connecting plate; 226 - first slider; 227 - first slide bar; 228 - screw mounting plate; 229 - screw motor mounting plate

[0041] 230 - opening drive mechanism; 231 - first bevel gear; 232 - second bevel gear; 233 - power transmission rod; 234 - opening cam; 235 - follower; 236 - hook-shaped connecting rod; 237 - vertical mounting plate; 238 - second connecting rod; 239 - connecting base plate;

[0042] 300-Plant conveying mechanism

[0043] 301- transmission roller; 302- roller belt; 303- longitudinal outer beam; 304- conveying mechanism synchronous wheel; 305- seedling transport drive mechanism; 306- support foot; 307- transverse connecting block; 308- sidewall mounting column; 309- L-shaped sidewall; 310- roller mounting block; 311- second synchronous wheel belt; 312- extrusion angle column; 313- clamping coil. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Example 1

[0045] like Figures 15 to 17 As shown, a seedling delivery mechanism includes a pair of drive rollers 301 and a roller belt 302 connected between the drive rollers. The ends of the drive rollers 301 are respectively fixed to a pair of longitudinal outer crossbeams 303. One end of each drive roller 301 is provided with a conveyor mechanism synchronous pulley 304, which is connected to the synchronous pulley on the power output end of the seedling transport drive mechanism 305 via a second synchronous pulley belt 311. Support legs 306 are provided below the longitudinal outer crossbeams 303, and the ends of the support legs 306 are provided with transverse connecting blocks 307. One or more sets of roller belts 302 are provided between the two drive rollers 301.

[0046] Specifically, two sets of roller belts 302 are provided between the two transmission rollers 301 ; the two sets of roller belts 302 are respectively provided on both sides of the transmission roller 301 .

[0047] The utility model realizes the basic function of plant transportation by using a driving mechanism to drive the transmission roller and the roller belt to rotate, and utilizes the simplest structure. At the same time, the entire transportation mechanism is integrated into a whole through the longitudinal outer cross beam, and supporting feet are provided at the bottom of the longitudinal outer cross beam, thereby realizing the assemblability of the seedling delivery mechanism, so that it can be assembled onto the existing planting of farmers, thereby solving the problem of planting and sowing for farmers at a low cost.

[0048] In some embodiments, a rib mounting post 308 is provided on the inner side of the roller belt 302. The rib mounting post 308 further secures the roller belt, ensuring its structural strength to adapt to complex terrain. L-shaped ribs 309 are provided on the rib mounting post 308 and the longitudinal outer crossbeam 303. The L-shaped ribs 309 are arranged along the side of the roller belt 302. The L-shaped ribs 309 block the plants to prevent them from falling during transportation. In some embodiments, a roller mounting block 310 is provided at each end of the longitudinal outer crossbeam 303. One end of the roller mounting block 310 is connected to the outer wall of the longitudinal outer crossbeam 303, and the other end is provided with a roller mounting hole. The end of the transmission roller 301 is mounted in the roller mounting hole. Correspondingly, the conveying mechanism synchronous pulley 304 is located on the outside of the roller mounting block 310. By securing the transmission roller to the longitudinal outer crossbeam 303 using the roller mounting block 310, the difficulty of assembly can be reduced and maintenance of the transmission roller and roller belt can be facilitated. In some embodiments, a drive mechanism mounting plate is provided on the outer side of the longitudinal outer crossbeam 303. This plate is located adjacent to and on the same side as the roller mounting block for the conveyor mechanism's synchronous pulleys. The upper end of the drive mechanism mounting plate is connected to the outer side of the longitudinal outer crossbeam 303, while the inner side of the lower end is connected to the seedling transport drive mechanism 305. The synchronous pulley on the power output of the seedling transport drive mechanism 305 is connected to the conveyor mechanism's synchronous pulley 304 via a second synchronous pulley belt 311. Placing the drive mechanism for the transmission roller on the side and the seedling delivery drive mechanism below not only reduces the overall size of the seedling delivery mechanism but also prevents interference with the mounting locations of the support legs and other structures, further enhancing the assembly of the seedling delivery mechanism. In some embodiments, at least two support legs 306 are provided below each longitudinal outer crossbeam 303; in this embodiment, four support legs 306 are provided. Extruded corner posts 312 are provided at the perpendicular intersections of the support legs 306 and the longitudinal outer crossbeam 303, further enhancing the stability of the seedling delivery mechanism. In addition, in order to facilitate the collection and organization of wires, a clamping coil 313 is provided in the extruded corner column 312. Example 2

[0049] A small-sized automated seedling transplanter includes a seedling transplanter 200 and a plant conveying mechanism 300. The plant conveying mechanism is the seedling conveying mechanism in the first embodiment. The seedling transplanter 200 is provided with a feeding bucket 211. The end of the roller belt 302 is located directly above the feeding bucket 211. The small-sized automated seedling transplanter also includes a carrier 100 and a soil covering mechanism 400.

[0050] The carrier vehicle 100 includes a bottom frame 110 and an upper frame 120 mounted on the bottom frame; a planting device 200 is vertically mounted between the bottom frame 110 and the upper frame 120; a plant conveying mechanism 300 is mounted on the upper frame 120 and is located behind the upper end of the planting device 200; a soil covering mechanism 400 is mounted on the bottom frame 110 and is located behind the planting device 200;

[0051] The planting device 200 includes a planting dispenser 210, which is mounted on a mobile mechanism 220. The mobile mechanism 220 is installed between the bottom frame 110 and the upper frame 120. The planting dispenser 210 has a feeding bucket 211 at the top and an opening device 212 at the bottom. The opening device 212 is connected to the opening drive mechanism 230.

[0052] The plant conveying mechanism 300 includes a conveyor belt, the end of which is located directly above the feeding bucket 211 ; the soil covering mechanism 400 includes a scraper plate 410 , which is located directly behind the opener 212 .

[0053] The utility model sets the carrier 100 as a two-layer vehicle, and the planting device 200 is vertically arranged at the front end of the carrier 100, occupying the front half space between the bottom frame and the upper frame, and at the same time, an opener driving mechanism is separately arranged at the rear end of the bottom frame, and the opener of the planting device is separately controlled by the opening driving mechanism to realize digging, and the opener driving mechanism is arranged at the rear half of the bottom frame, and the rear half of the bottom frame is also provided with a soil covering mechanism, which buries the planted plants with soil through the soil covering mechanism; a plant conveying mechanism is arranged at the rear end of the upper frame, and the seedlings are delivered by the plant conveying mechanism, and the conveyor belt end of the plant conveying mechanism is located just above the feeding bucket 211, which can ensure that the plants can be accurately put into the planting device 200, and the utility model can automatically realize seedling delivery, digging, seedling planting, and soil covering, covering the entire operation process of the plant seedling planting process, making full use of the space of the double-layer carrier, achieving the effect of realizing all functions, but with a smaller overall body, and the carrier can adapt to various terrain environments, thereby improving the versatility of agricultural machinery.

[0054] like Figures 9 to 14 As shown, in some embodiments, a planting mount is provided on the mobile mechanism 220. The planting mount includes a mounting frame 224, with a first right-angle connecting plate 225a connected to one side of the mounting frame 224. A feeding bucket 211 is mounted on the upper surface of the mounting frame 224. An opener 212 is disposed below the mounting frame 224, with the lower end of the feeding bucket 211 aligned with the upper end of the opener 212. The mounting frame and the first right-angle connecting plate 225a form the planting mount, which is positioned between the bottom and upper frames. This ensures that when the mobile mechanism reaches its uppermost position, the feeding bucket 211 remains at the end of the conveyor belt, further controlling the height of the entire machine body.

[0055] like Figures 9 to 14 As shown, in some embodiments, the mobile mechanism 220 includes a screw nut 221, which is mounted on a ball screw 222. The upper end of the ball screw 222 is fixed to the middle of the upper frame 120, and the lower end is fixed to the middle of the bottom frame 110. A connecting cross plate 223 is provided on the screw nut 221. Planting mounts are provided at both ends of the connecting cross plate 223. The planting mounts are connected to the ends of the connecting cross plate 223 via a first right-angle connecting plate 225a. The entire mobile mechanism 220 is located in the middle, with its two sides connected to the two planting mounts via the connecting cross plates 223. This ensures planting efficiency despite the small size of the machine.

[0056] Furthermore, since the design includes two planting devices, to ensure stability when operating in hilly or mountainous areas, a second right-angle connecting plate 225b is connected to the outside of the mounting frame 224. The upper end of the second right-angle connecting plate 225b is connected to a first slider 226, which is mounted on a first slide bar 227. The upper end of the first slide bar 227 is connected to the outer frame of the upper frame 120, and the lower end is connected to the outer frame of the bottom frame 110. More preferably, the present invention uses a double slide bar as the first slide bar 227, which has greater structural strength, further increasing the structural strength of the planting device and adapting to different terrains.

[0057] like Figures 5 to 8As shown, in some embodiments, in order to enhance the structural strength of the mobile mechanism and improve the ability of the fuselage to adapt to the terrain, the bottom frame 110 includes a bottom frame 111, and a first bottom beam 112a, a second bottom beam 112b and a third bottom beam 112c are provided in the bottom frame 111. The first bottom beam 112a, the second bottom beam 112b and the third bottom beam 112c constitute the bottom beam 112, and a first planting device installation area 110a is formed between the first bottom beam 112a and the second bottom beam 112b, a soil covering mechanism installation area 110b is formed between the second bottom beam 112b and the third bottom beam 112c, and a front end drive wheel installation area is formed between the first bottom beam 112a and the bottom frame 111. Specifically, the first bottom crossbeam 112a and the second bottom crossbeam 112b are connected midway by a first short beam 113, and the lower end of the ball screw 222 is disposed on the first short beam 113. The upper frame 120 includes an upper frame 121, within which a first upper crossbeam is disposed. A second planting device mounting area 120a is defined between the first upper crossbeam and the front crossbeam of the upper frame 121, while a plant conveying mechanism mounting area 120b is defined between the first upper crossbeam and the rear crossbeam of the upper frame 121. Specifically, the first upper crossbeam is located directly above the second bottom crossbeam 112b; the first upper crossbeam is connected to the front end of the upper frame by a second short beam; the second short beam is located directly above the first short beam, and the upper end of the ball screw 222 is disposed on the second short beam. More preferably, two first short beams and two second short beams are provided. Furthermore, the upper and lower ends of the ball screw 222 are fixed to the first short beam and the second short beam through separate screw mounting plates 228, and a screw motor mounting plate 229 is provided on the screw mounting plate 228 at the upper end. The lower surface of the screw motor mounting plate 229 is connected to a screw drive motor, and the power output end of the screw drive motor and the end of the ball screw 222 are both provided with a first synchronous wheel, and the two first synchronous wheels are connected by a first synchronous belt.

[0058] Specifically, such as Figures 5 to 8 As shown, in some embodiments, to ensure the carrier vehicle can move automatically and adapt to different terrains, a frame drive mechanism is provided at the bottom of the base frame 110. The frame drive mechanism includes multiple drive wheels 130, all of which are located in the same plane. The two drive wheels 130 at the front are connected by a cross-rod 131, and a frame drive device 132 is provided in the middle of the cross-rod 131. The cross-rod 131 is provided with a frame connector, which includes an I-shaped connector. The upper connecting plate of the I-shaped connector 134 is fixedly connected to the lower surface of the front end of the base frame 110, and its lower connecting plate is fixedly connected to the cross-rod 131. The lower connecting plate of the I-shaped connector 134 is fixedly connected to the cross-rod 131 via a U-shaped fork 135, and multiple sets of U-shaped forks 135 are provided.

[0059] In some embodiments, to further ensure the secure connection between the base frame and the front wheel, the frame connector further includes a structural reinforcement plate 136 disposed on the I-shaped connector 134. The structural reinforcement plate 136 is perpendicular to the vertical plate in the middle of the I-shaped connector 134 and is connected between the upper and lower connecting plates of the I-shaped connector 134. The drive wheel 130 located at the rear of the base frame 110 is a universal wheel and is connected to the rear of the base frame 110 via a tilt link 137.

[0060] In some embodiments, in order to facilitate manual pushing and moving of the entire agricultural machine, a hand-held push rod 140 is provided at the rear end of the supporting frame.

[0061] like Figures 13 and 14 As shown, in some embodiments, an opening drive mechanism 230 is provided on the second bottom crossbeam 112b and the third bottom crossbeam 112c, and the opening drive mechanism 230 is connected to the opening device 212 via a second connecting rod 238. By driving the opening device to open and close independently through the opening drive mechanism, the insertion of the pillar into the ground can be independently controlled. In conjunction with the automatic operation of the carrier vehicle, the planting distance between plants can be adjusted.

[0062] like Figure 9 to Figure 3 as well as Figure 19 As shown, in some embodiments, the opener is formed by at least two duckbill opening pieces 212a, and the overall shape of the opener is conical, which is convenient for the opener to be inserted into the soil; two duckbill opening pieces are used in this embodiment, because the opening drive mechanism 230 of the utility model can only drive the duckbill opening piece 212a on one side to shake, so only two duckbill opening pieces are needed, one duckbill opening piece is shaken open to enable the plant to fall into the pit, and the other duckbill opening piece is always kept upright to straighten the plant and ensure that the plant will not tilt or fall.

[0063] like Figure 9 to Figure 3 as well as Figure 19 As shown, in some embodiments, a flange is provided around the arcuate opening at the upper end of the duckbill opening piece 212a, and a pair of mounting tabs 213 are vertically provided on the flange. The mounting tabs 213 are provided with mounting holes. Correspondingly, a lug extends from the side of the mounting frame 224, and the lug also has a mounting hole. The connecting rod 214 passes through one mounting tab, two mounting tabs of the mounting frame, and another mounting tab in sequence, so that the duckbill opening piece 212a is hung on the side of the mounting frame 224 and can rotate relative to the connecting rod. In order to enable the opening piece to rotate relative to the connecting rod 214, the upper end of one of the mounting tabs 213 is connected to one end of a second connecting rod 238, and the other end of the second connecting rod 238 is connected to one end of a hook-shaped connecting rod 236 of the opening drive mechanism 230.

[0064] like Figure 13As shown, in some embodiments, the opening drive mechanism 230 includes an opening drive motor, and the power output end of the opening drive motor is provided with a first bevel gear 231, the first bevel gear 231 is meshed with the second bevel gear 232, and the second bevel gear 232 is provided in the middle area of ​​the power transmission rod 233, and opening cams 234 are respectively installed on both sides of the power transmission rod 233. Through an opening drive motor, it serves as the power source for two openers to dig the land at the same time, thereby ensuring the consistency of the operation of the two openers and improving the planting quality; more specifically, in order to facilitate the installation of the opening drive mechanism on the automated planting agricultural machinery, the two ends of the power transmission rod 233 are fixed on the vertical mounting plate 237, and the two vertical mounting plates 237 are connected by a connecting base plate 239; the vertical mounting plate 237 extends forward with a connecting rod mounting area, and the hook-shaped connecting rod 236 is connected to the connecting rod mounting area.

[0065] Specifically, the opening cam 234 cooperates with a follower 235, which is located at one end of a hook-shaped connecting rod 236. The hook of the hook-shaped connecting rod 236 is rotatably connected to a vertical mounting plate 237, allowing the hook-shaped connecting rod 236 to rotate relative to its center. The upper end of the hook-shaped connecting rod 236 is connected to a second connecting rod 238, and the upper end of the second connecting rod 238 is connected to the upper end of the mounting bracket 213. When the opening cam rotates and presses the follower downward, the center of the hook-shaped connecting rod rotates relative to the vertical mounting plate 237, causing its other end to rise upward. The upward lifting force is redirected by the inclined second connecting rod 238. Furthermore, the opening bracket can rotate relative to the connecting rod 214. Therefore, when force acts on the mounting bracket, the mounting bracket drives the opening bracket to rotate relative to the connecting rod, opening the lower end of the opening bracket and allowing seedling planting. When the opening cam and the follower are no longer in contact, the opening bracket returns to its original position. In this way, the mechanical power of the opener for opening the seedlings is completely independent of other powers of the machine body, and the seedling throwing operation is controlled independently.

[0066] like Figures 5 to 8 As shown, in some embodiments, a second upper crossbeam is provided in the upper vehicle frame 121, and the plant conveying mechanism 300 is mounted between the first upper crossbeam and the second upper crossbeam;

[0067] The plant conveyor mechanism 300 includes two sets of conveyor belts, each of which is a roller belt 302, mounted on either end of a pair of drive rollers 301. At least one of the drive rollers 301 is equipped with a conveyor mechanism synchronous pulley 304. The conveyor mechanism uses two belts to simultaneously transport two planting devices, significantly improving planting efficiency.

[0068] In some embodiments, to provide power to the plant mechanism, roller mounting blocks 310 are provided at the ends of the longitudinal outer crossbeams 303. One end of the roller mounting block 310 is connected to the outer side wall of the longitudinal outer crossbeam 303, and the other end is provided with a roller mounting hole. The end of the transmission roller 301 is mounted within the roller mounting hole. Correspondingly, the conveyor mechanism synchronous pulley 304 is disposed on the outer side of the roller mounting block 310. A drive mechanism mounting plate is also provided on the outer side of the longitudinal outer crossbeam 303. The drive mechanism mounting plate is disposed adjacent to and on the same side as the roller mounting block provided with the conveyor mechanism synchronous pulley. The upper end of the drive mechanism mounting plate is connected to the outer side surface of the longitudinal outer crossbeam 303, and the inner side surface of the lower end is connected to the seedling transport drive mechanism 305. The synchronous pulley on the power output end of the seedling transport drive mechanism 305 is connected to the conveyor mechanism synchronous pulley 304 via a second synchronous pulley belt 311.

[0069] In some embodiments, at least two supporting legs 306 are provided below each longitudinal outer crossbeam 303. In this embodiment, four supporting legs 306 are provided to ensure the stability of the plant conveying mechanism and enable it to adapt to different terrains.

[0070] In some embodiments, extruded corner posts 312 are positioned at the perpendicular intersection of the support legs 306 and the longitudinal outer crossbeam 303. These extruded corner posts further enhance the stability of the plant conveyor mechanism and its adaptability to terrain. More preferably, to facilitate the collection of wires connecting the agricultural machinery, a clip coil 313 is positioned within the extruded corner posts 312.

[0071] In some embodiments, as Figure 18 As shown, to fully utilize the space in the lower frame and minimize the overall vehicle size, the second and third bottom crossbeams 112b and 112c are connected by a third short beam 114. The opening drive mechanism 230 is mounted on the upper surface of the third short beam 114. A covering mechanism 400 is installed on the sides of the third short beam 114 and the lower frame 111. This covering mechanism 400 includes two scraper blades 410 mounted on scraper blade arms 420. The ends of the two scraper blade arms are connected as a whole, and mounting holes are provided at the connection point to facilitate installation of the scraper blades on the entire vehicle.

[0072] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0073] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A seedling delivery mechanism, comprising a pair of transmission rollers (301) and a roller belt (302) connected between the transmission rollers, characterized in that: The two ends of the transmission roller (301) are respectively fixed on a pair of longitudinal outer beams (303); one end of the transmission roller (301) is provided with a conveying mechanism synchronous wheel (304); the conveying mechanism synchronous wheel (304) is connected to the synchronous wheel on the power output end of the seedling transport drive mechanism (305) through a second synchronous wheel belt (311); A support foot (306) is provided below the longitudinal outer crossbeam (303), and a transverse connecting block (307) is provided at the end of the support foot (306); One or more groups of roller belts (302) are provided between the two transmission rollers (301).

2. The seedling delivery mechanism according to claim 1, wherein: Two groups of roller belts (302) are provided between the two transmission rollers (301); the two groups of roller belts (302) are respectively provided on both sides of the transmission roller (301).

3. The seedling delivery mechanism according to claim 1, wherein: A sidewall mounting column (308) is provided on the inner side of the roller belt (302).

4. The seedling delivery mechanism according to claim 3, wherein: The rib mounting column (308) and the longitudinal outer crossbeam (303) are both provided with an L-shaped rib (309), and the L-shaped rib (309) is arranged along the side of the roller belt (302).

5. The seedling delivery mechanism according to claim 1, wherein: The ends of the longitudinal outer cross beams (303) are each provided with a roller mounting block (310), one end of the roller mounting block (310) being connected to the outer side wall of the longitudinal outer cross beam (303), and the other end of the roller mounting block (310) being provided with a roller mounting hole, the end of the transmission roller (301) being mounted in the roller mounting hole; correspondingly, the synchronous wheel (304) of the conveying mechanism is provided on the outer side of the roller mounting block (310).

6. The seedling delivery mechanism according to claim 5, characterized in that: A drive mechanism mounting plate is further provided on the outer side of the longitudinal outer crossbeam (303), and the drive mechanism mounting plate is arranged on the same side as and adjacent to a roller mounting block provided with a synchronous wheel of the conveying mechanism; the upper end of the drive mechanism mounting plate is connected to the outer side of the longitudinal outer crossbeam (303), and the inner side of the lower end is connected to the seedling transport drive mechanism (305); the synchronous wheel on the power output end of the seedling transport drive mechanism (305) is connected to the synchronous wheel (304) of the conveying mechanism via a second synchronous wheel belt (311).

7. The seedling delivery mechanism according to any one of claims 1 to 6, characterized in that: At least two supporting legs (306) are provided below each longitudinal outer crossbeam (303).

8. The seedling delivery mechanism according to claim 7, wherein: An extruded corner column (312) is provided at a vertical intersection between the support foot (306) and the longitudinal outer crossbeam (303).

9. The seedling delivery mechanism according to claim 8, wherein: A clamping coil (313) is provided in the extruded corner column (312).

10. A small automatic seedling planting machine, characterized by: The invention comprises a seedling planting device (200) and a plant conveying mechanism (300), wherein the plant conveying mechanism is the seedling conveying mechanism according to any one of claims 1 to 9, and a feeding bucket (211) is provided on the seedling planting device (200), and the end of the roller belt (302) is located directly above the feeding bucket (211).

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