A rice pot seedling tooth disc conveying type seedling taking device

Abstract

This invention discloses a rice seedling tray conveying and seedling picking device, belonging to the field of rice planting technology. The device includes: a support mechanism; a toothed disc conveying mechanism, a transmission system, a top-rod seedling picking mechanism, a seedling tray loading mechanism, and a seedling tray retrieval mechanism, all mounted on the support mechanism; the transmission system is driven and connected to the toothed disc conveying mechanism and the top-rod seedling picking mechanism; the seedling tray loading mechanism and the top-rod seedling picking mechanism are arranged vertically, both located at the upper end of the top-rod seedling picking mechanism; the seedling tray retrieval mechanism is located at the bottom of the toothed disc conveying mechanism; power input, after passing through the transmission system, drives the toothed disc conveying mechanism to transport the seedling tray in the seedling tray loading mechanism to the seedling ejection position, after which the transmission system drives the top-rod seedling picking mechanism to eject the seedlings from the seedling tray, and the seedling tray with ejected seedlings is retrieved to the seedling tray retrieval mechanism. During operation, the connecting rod shaft drives the eccentric rocker arm to drive the lower lever to move the toothed disc, transporting the seedling tray to the ejection position, enabling precise positioning of the seedling tray's pot holes and ejecting the seedlings.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of rice planting, and particularly relates to a rice pot seedling tooth disc conveying type seedling taking device. BACKGROUND

[0002] Rice is a main food crop in China, and improving the whole-process mechanization level of rice production has great practical significance for guaranteeing national food security, enhancing agricultural comprehensive production capacity, increasing agricultural income and promoting agricultural modernization.

[0003] Rice pot seedling throwing seedling technology has great development potential because it has the advantages of early growth, increased effective ear number, yield increase and the like after rice transplanting.

[0004] At present, rice pot seedling seedling taking technologies mainly include clamping type, pulling type and ejection type and the like. SUMMARY

[0005] In order to solve the above problems, the technical scheme adopted by the application is as follows:

[0006] A rice pot seedling tooth disc conveying type seedling taking device, comprising:

[0007] a support mechanism for providing support;

[0008] a tooth disc conveying mechanism, a transmission system, a ejector rod seedling taking mechanism, a seedling tray loading mechanism and a seedling tray recycling mechanism arranged on the support mechanism;

[0009] The transmission system is drivingly connected with the tooth disc conveying mechanism and the ejector rod seedling taking mechanism. The seedling tray loading mechanism and the ejector rod seedling taking mechanism are arranged above and below and are located at the upper end of the seedling tray recycling mechanism. The seedling tray recycling mechanism is arranged at the bottom of the tooth disc conveying mechanism.

[0010] The input end of the transmission system is connected with a power output device. After power input is transmitted through the transmission system, the tooth disc conveying mechanism conveys the seedling tray in the seedling tray loading mechanism to a seedling ejection position. The transmission system drives the ejector rod seedling taking mechanism to eject seedlings in the seedling tray. The seedling tray after the seedlings are ejected is recycled to the seedling tray recycling mechanism.

[0011] Furthermore, the support mechanism includes a support base plate, a left support side plate, a right support side plate, and a support rib plate. The left support side plate and the right support side plate are respectively disposed on both sides of the support base plate, and the support rib plate is disposed at the bottom of the left support side plate and the right support side plate. The toothed disc conveying mechanism, the transmission system, the top rod seedling picking mechanism, and the seedling tray loading mechanism are all connected to the left support side plate and the right support side plate, and the seedling tray recycling mechanism is disposed on the support base plate.

[0012] Further, the toothed disc conveying mechanism includes a central shaft and a conveying section disposed on the central shaft. The two ends of the central shaft are rotatably connected to the left support side plate and the right support side plate, respectively. The conveying section is a group located between the left and right support side plates. The conveying section includes a toothed disc, a toothed disc support plate, a toothed disc connector, a lower lever, and a cantilever bracket. The toothed disc is fixedly connected to the toothed disc support plate via the toothed disc connector. The toothed disc and the toothed disc support plate are rotatably disposed on the central shaft. The cantilever bracket is rotatably disposed on the central shaft and located on the side of the toothed disc away from the toothed disc support plate. One end of the cantilever bracket cooperates with the transmission system, and the other end is fixedly connected to the lower lever. The transmission system drives the cantilever bracket to reciprocate around the central shaft, and the cantilever bracket drives the lower lever to reciprocate. The lower lever cooperates with the toothed disc to drive the toothed disc to rotate and convey the seedling tray.

[0013] Furthermore, the transmission system includes a drive shaft, a cam, an eccentric rocker arm, and a connecting rod assembly;

[0014] The two ends of the drive shaft are rotatably connected to the left support side plate and the right support side plate, respectively, and are located below the central shaft;

[0015] There are two eccentric rockers, and the two eccentric rockers are respectively set to correspond to the cantilever bracket of the conveying part; the first end of the eccentric rocker is sleeved on the outside of the inner core of the eccentric shaft and is rotatably connected to the inner core of the eccentric shaft, the inner core of the eccentric shaft is fixedly installed on the transmission shaft, and the second end of the eccentric rocker is rotatably connected to the end of the cantilever bracket near the gear plate;

[0016] The cam is located at the center of the transmission shaft; the connecting rod assembly is located on the side of the transmission shaft away from the central shaft, and the non-end position of the connecting rod assembly is rotatably connected to the left support side plate and the right support side plate; one end of the connecting rod assembly cooperates with the cam, and the other end cooperates with the top rod seedling picking mechanism to drive the top rod seedling picking mechanism to push out the seedlings in the seedling tray.

[0017] Furthermore, the linkage assembly includes an optical shaft, push rods, and push rod shafts. The two ends of the optical shaft are fixedly connected to the left support side plate and the right support side plate, respectively, and are positioned on the side of the transmission shaft away from the central axis. There are two push rods, arranged relatively parallel to each other. The non-end positions of the two push rods are rotatably connected to the optical shaft. The two push rods are connected by two push rod shafts, which are respectively positioned on both sides of the optical shaft. The push rod shaft located at the first end of the two push rods cooperates with the cam. The second end of the two push rods is provided with a strip-shaped hole, and a push rod drive shaft is provided within the two strip-shaped holes and is rotatably connected to it. The push rod drive shaft cooperates with the top rod seedling-picking mechanism to drive the top rod seedling-picking mechanism to push out seedlings from the seedling tray.

[0018] Furthermore, the top rod seedling picking mechanism includes a top rod assembly I, a top rod assembly connector, and a top rod assembly II connected in sequence. The top rod assembly I and the top rod assembly II are linearly movable and connected to the cantilever bracket. The top rod assembly I is used to push out the seedlings in the seedling tray, and the push rod drive shaft is fixedly connected to the top rod assembly II. The top rod assembly connector is located at the upper end of the central shaft.

[0019] Furthermore, the top rod assembly I includes a top rod assembly connecting plate I, a top rod assembly connecting rod I, a top rod welding plate, and a seedling picking top rod. The top rod assembly connecting plate and the top rod welding plate are connected by two oppositely arranged top rod assembly connecting rods I. There are multiple seedling picking top rods, which are evenly arranged on the top rod welding plate. The top rod assembly connecting plate I is fixedly connected to the first end of the assembly connector.

[0020] The push rod assembly II includes a push rod assembly connecting plate II, a push rod assembly connecting rod II, a push rod assembly connecting plate one, a push rod assembly connecting plate two, and a push rod assembly front connecting plate II. The push rod assembly front connecting plate II is arranged opposite to the push rod assembly connecting plate II, and the push rod assembly front connecting plate II is fixedly connected to the second end of the push rod assembly connector. There are two push rod assembly connecting plates II, and the two push rod assembly connecting rods II are arranged parallel to each other and fixedly connected to the push rod assembly front connecting plate II and the push rod assembly connecting plate II. The push rod assembly connecting plate one and the push rod assembly connecting plate two are arranged between the two push rod assembly connecting plates II, and the two ends of the push rod drive shaft are respectively fixedly connected to the push rod assembly connecting plate one and the push rod assembly connecting plate two. The two push rod assembly connecting rods I and the two push rod assembly connecting rods II are all linearly movable connected to the cantilever bracket through linear bearings.

[0021] Furthermore, the seedling tray loading mechanism includes a seedling box, seedling box support side plates, and seedling box support bottom plates. There are two seedling box support side plates, which are arranged parallel to each other. The seedling box is located at the upper end of the two seedling box support side plates. There are two seedling box support bottom plates, which are arranged correspondingly to the two seedling box support side plates and located at the lower end of the seedling box support side plates on the side away from the seedling box. The two seedling box support bottom plates are respectively arranged correspondingly to the left support side plate and the right support side plate, and are fixedly connected to the left support side plate and the right support side plate.

[0022] Furthermore, the seedling tray recycling mechanism includes a seedling tray guide plate, a seedling tray guide bar, and a seedling tray recycling frame. There are two seedling tray guide plates, which are respectively arranged corresponding to the two side walls of the seedling box and respectively fixedly connected to the left support side plate and the right support side plate. The seedling tray recycling frame is arranged at the upper end of the support base plate and is fixedly connected to the support base plate.

[0023] The seedling tray guide bar is correspondingly arranged with the middle rib of the seedling box, and the end of the seedling tray guide bar away from the seedling box is fixedly connected to the seedling tray recycling rack; wherein, the seedling tray guide plate and the seedling tray guide bar cooperate to guide the seedling tray after the seedling is pushed out by the top rod seedling picking mechanism to the seedling tray recycling rack.

[0024] The beneficial effects of this invention are:

[0025] 1. This invention uses a toothed disc conveying method to transport seedling trays. During operation, the connecting rod shaft drives the eccentric rocker arm to drive the lower lever to move the toothed disc to transport the seedling tray to the ejection position, which can accurately position the seedling tray and eject the seedlings.

[0026] 2. The present invention adopts a top-out seedling picking method, with the top-out position at the bottom of the seedling, which can effectively avoid damage to the seedlings during the seedling picking process. In addition, the top-out mechanism has a simple structure and low machine cost. For a special seedling tray, a row of seedlings can be picked out at one time, resulting in high seedling picking efficiency.

[0027] 3. This invention uses a cam-linkage mechanism to coordinate the toothed disc conveying and seedling ejection functions, ensuring the synchronization of conveying and seedling picking operations. Compared with other seedling picking mechanisms, the operation quality is significantly improved, and it has the advantages of simple structure, reliable operation, and minimal damage to seedling trays and seedlings. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of the device of the present invention;

[0029] Figure 2 This is another perspective on the overall structure of the device of the present invention;

[0030] Figure 3 This is a front view of the overall structure of the device of the present invention;

[0031] Figure 4 for Figure 3 Sectional view of AA;

[0032] Figure 5 This is a schematic diagram of the overall structure of the device of the present invention (excluding the right-side support plate);

[0033] Figure 6 Another perspective of the overall structure of the device of the present invention (excluding the right-side support plate);

[0034] Figure 7 This is a schematic diagram of the support mechanism structure of the present invention;

[0035] Figure 8 This is a schematic diagram of the toothed disc conveying mechanism of the present invention;

[0036] Figure 9 This is a schematic diagram of the transmission system structure of the present invention;

[0037] Figure 10 This is a schematic diagram of the linkage assembly structure of the present invention;

[0038] Figure 11 This is a schematic diagram of the top rod seedling picking mechanism of the present invention;

[0039] Figure 12 This is a schematic diagram of the top rod assembly I of the present invention;

[0040] Figure 13 This is a schematic diagram of the push rod assembly II of the present invention;

[0041] Figure 14 This is a schematic diagram of the seedling tray loading mechanism of the present invention;

[0042] Figure 15 This is a schematic diagram of the seedling tray recycling mechanism of the present invention;

[0043] Among them, 1. Support mechanism; 101. Support base plate; 102. Left support side plate; 103. Right support side plate; 104. Support rib plate; 2. Gear disk conveying mechanism; 201. Gear disk; 202. Gear disk support plate; 203. Gear disk connector; 204. Central shaft; 205. Lower lever; 206. Cantilever bracket; 3. Transmission system; 301. Transmission shaft; 302. Cam; 303. Eccentric rocker arm; 304. Linkage assembly; 30401. Optical shaft; 30402. Push rod; 30403. Push rod shaft; 4. Top rod seedling picking mechanism; 401. Top rod assembly I; 40101. Top rod assembly connection Plate I; 40102, Top rod assembly connecting rod I; 40103, Top rod welding plate; 40104, Seedling taking top rod; 402, Top rod assembly II; 40201, Assembly connecting plate II; 40202, Top rod assembly connecting rod II; 40203, Top rod assembly connecting plate one; 40204, Top rod assembly connecting plate two; 40205, Top rod assembly front connecting plate II; 403, Top rod assembly connector; 5, Seedling tray loading mechanism; 501, Seedling box; 502, Seedling box support side plate; 503, Seedling box support bottom plate; 6, Seedling tray recycling mechanism; 601, Seedling tray guide plate; 602, Seedling tray guide strip; 603, Seedling tray recycling rack. Detailed Implementation

[0044] This invention provides a rice seedling tray conveying and harvesting device. The technical solution of this invention will be described in detail below with reference to the accompanying drawings to make it easier to understand and master.

[0045] Example 1

[0046] refer to Figures 1-15 A rice seedling tray conveying and harvesting device, comprising:

[0047] Support mechanism 1 is used to provide support;

[0048] The following components are installed on the support mechanism 1: toothed disc conveying mechanism 2, transmission system 3, top rod seedling picking mechanism 4, seedling tray loading mechanism 5, and seedling tray recycling mechanism 6.

[0049] The transmission system 3 is driven and connected to the toothed disc conveying mechanism 2 and the top rod seedling picking mechanism 4; the seedling tray loading mechanism 5 and the top rod seedling picking mechanism 4 are arranged vertically and are both located at the upper end of the seedling tray recycling mechanism 6; the seedling tray recycling mechanism 6 is located at the bottom of the toothed disc conveying mechanism 2.

[0050] The input end of the transmission system 3 is connected to the power output device. After the power input passes through the transmission system 3, it drives the toothed disc conveying mechanism 2 to transport the seedling tray in the seedling tray loading mechanism 5 to the seedling ejection position. Then, the transmission system 3 drives the top rod seedling picking mechanism 4 to eject the seedlings from the seedling tray. After the seedlings are ejected, the seedling tray is recycled to the seedling tray recycling mechanism 6.

[0051] In this embodiment, the support mechanism 1 includes a support base plate 101, a left support side plate 102, a right support side plate 103, and a support rib plate 104. The left support side plate 102 and the right support side plate 103 are respectively disposed on both sides of the support base plate 101, and the support rib plate 104 is disposed at the bottom of the left support side plate 102 and the right support side plate 103. The toothed disc conveying mechanism 2, the transmission system 3, the top rod seedling picking mechanism 4, and the seedling tray loading mechanism 5 are all connected to the left support side plate 102 and the right support side plate 103. The seedling tray recycling mechanism 6 is disposed on the support base plate 101.

[0052] In this embodiment, the gear conveying mechanism 2 includes a central shaft 204 and a conveying section disposed on the central shaft 204. The two ends of the central shaft 204 are rotatably connected to the left support side plate 102 and the right support side plate 103, respectively. There are two sets of conveying sections located between the left support side plate 102 and the right support side plate 103. The conveying section includes a gear 201, a gear support plate 202, a gear connector 203, a lower lever 205, and a cantilever bracket 206. The gear 201 is fixedly connected to the gear support plate 202 via the gear connector 203. 1. The toothed disc support plate 202 is rotatably mounted on the central shaft 204; the cantilever bracket 206 is rotatably mounted on the central shaft 204 and located on the side of the toothed disc 201 away from the toothed disc support plate 202; one end of the cantilever bracket 206 is engaged with the transmission system 3, and the other end is fixedly connected to the lower lever 205. The transmission system 3 drives the cantilever bracket 206 to reciprocate around the central shaft 204, and the cantilever bracket 206 drives the lower lever 205 to reciprocate. The lower lever 205 engages with the toothed disc 201 to drive the toothed disc 201 to rotate and transport the seedling tray.

[0053] In this embodiment, the transmission system 3 includes a transmission shaft 301, a cam 302, an eccentric rocker arm 303, and a connecting rod assembly 304;

[0054] The two ends of the drive shaft 301 are rotatably connected to the left support side plate 102 and the right support side plate 103 respectively, and are located below the central shaft 204;

[0055] There are two eccentric rocker arms 303, which are respectively set with the cantilever brackets 206 of the two sets of conveying parts. The first end of the eccentric rocker arm 303 is sleeved on the outside of the inner core of the eccentric shaft and is rotatably connected to the inner core of the eccentric shaft. The inner core of the eccentric shaft is fixedly installed on the transmission shaft 301. The second end of the eccentric rocker arm 303 is rotatably connected to the end of the cantilever bracket 206 near the gear plate 201.

[0056] Cam 302 is located at the center of transmission shaft 301; connecting rod assembly 304 is located on the side of transmission shaft 301 away from central shaft 204, and the non-end position of connecting rod assembly 304 is rotatably connected to left support side plate 102 and right support side plate 103; one end of connecting rod assembly 304 cooperates with cam 302, and the other end cooperates with push rod seedling picking mechanism 4 to drive push rod seedling picking mechanism 4 to push out seedlings in seedling tray.

[0057] The connecting rod assembly 304 includes an optical shaft 30401, push rods 30402, and push rod shaft 30403. The two ends of the optical shaft 30401 are fixedly connected to the left support side plate 102 and the right support side plate 103, respectively, and are positioned on the side of the transmission shaft 301 away from the central shaft 204. There are two push rods 30402, arranged relatively parallel to each other. The non-end positions of the two push rods 30402 are rotatably connected to the optical shaft 30401, and the two push rods 30402 are connected... Two push rod shafts 30403 are connected and respectively set on both sides of the optical shaft 30401. The push rod shaft 30403 located at the first end of the two push rods 30402 cooperates with the cam 302. The second end of the two push rods 30402 is provided with a strip hole. The push rod drive shaft is provided in the two strip holes and is rotatably connected to it. The push rod drive shaft cooperates with the top rod seedling picking mechanism 4 to drive the top rod seedling picking mechanism 4 to push out the seedlings in the seedling tray.

[0058] In this embodiment, the top rod seedling picking mechanism 4 includes a top rod assembly I 401, a top rod assembly connector 403, and a top rod assembly II 402 connected in sequence. The top rod assembly I 401 and the top rod assembly II 402 are linearly connected to the cantilever bracket 206. The top rod assembly I 401 is used to push out the seedlings in the seedling tray, and the push rod drive shaft is fixedly connected to the top rod assembly II 402. The top rod assembly connector 403 is located at the upper end of the central shaft 204.

[0059] Specifically, the top rod assembly I 401 includes a top rod assembly connecting plate I 40101, a top rod assembly connecting rod I 40102, a top rod welding plate 40103, and a seedling picking top rod 40104. The top rod assembly connecting plate 40101 and the top rod welding plate 40103 are connected by two opposing top rod assembly connecting rods I 40102. There are multiple seedling picking top rods 40104, which are evenly arranged on the top rod welding plate 40103. The top rod assembly connecting plate I 40101 is fixedly connected to the first end of the top rod assembly connecting member 403.

[0060] The push rod assembly II 402 includes a push rod assembly connecting plate II 40201, a push rod assembly connecting rod II 40202, a first push rod assembly connecting plate 40203, a second push rod assembly connecting plate 40204, and a front connecting plate II 40205. The front connecting plate II 40205 is positioned opposite to the push rod assembly connecting plate II 40201 and is fixedly connected to the second end of the push rod assembly connector 403. There are two push rod assembly connecting plates II 40201, and the two push rod assembly connecting rods II 40202 are relatively flat. The push rod is set up and fixedly connected to the front connecting plate II 40205 and the connecting plate II 40201 of the push rod assembly; the first connecting plate I 40203 and the second connecting plate II 40204 of the push rod assembly are set between the two connecting plates II 40201 of the push rod assembly, and the two ends of the push rod drive shaft are fixedly connected to the first connecting plate I 40203 and the second connecting plate II 40204 of the push rod assembly respectively; the two connecting rods I 40102 and the two connecting rods II 40202 of the push rod assembly are all linearly connected to the cantilever bracket 206 through linear bearings.

[0061] In this embodiment, the seedling tray loading mechanism 5 includes a seedling box 501, a seedling box support side plate 502, and a seedling box support bottom plate 503. There are two seedling box support side plates 502, and the two seedling box support side plates 502 are arranged relatively parallel to each other. The seedling box 501 is located at the upper end of the two seedling box support side plates 502. There are two seedling box support bottom plates 503, which are arranged correspondingly to the two seedling box support side plates 502 and are located at the lower end of the side plates 502 away from the seedling box 501. The two seedling box support bottom plates 503 are respectively arranged correspondingly to the left support side plate 102 and the right support side plate 103, and are fixedly connected to the left support side plate 102 and the right support side plate 103.

[0062] In this embodiment, the seedling tray recycling mechanism 6 includes a seedling tray guide plate 601, a seedling tray guide bar 602, and a seedling tray recycling frame 603. There are two seedling tray guide plates 601, which are respectively arranged corresponding to the two side walls of the seedling box 501 and respectively fixedly connected to the left support side plate 102 and the right support side plate 103. The seedling tray recycling frame 603 is arranged on the upper end of the support base plate 101 and is fixedly connected to the support base plate 101.

[0063] The seedling tray guide bar 602 is correspondingly set with the middle rib of the seedling box 501, and the end of the seedling tray guide bar 602 away from the seedling box 501 is fixedly connected to the seedling tray recycling frame 603; wherein, the seedling tray guide plate 601 and the seedling tray guide bar 602 cooperate to guide the seedling tray after the seedling is pushed out by the top rod seedling picking mechanism 4 to the seedling tray recycling frame 603.

[0064] The technical solutions of the present invention have been fully described above. It should be noted that the specific embodiments of the present invention are not limited to the above description. All technical solutions formed by those skilled in the art based on the spirit and essence of the present invention by adopting equivalent transformations or equivalent transformations in terms of structure, method or function fall within the protection scope of the present invention.

Claims

1. A rice seedling tray conveying and harvesting device, characterized in that, include: Support mechanism (1), used to provide support; The following components are installed on the support mechanism (1): toothed disc conveying mechanism (2), transmission system (3), top rod seedling picking mechanism (4), seedling tray loading mechanism (5) and seedling tray recycling mechanism (6). The transmission system (3) is driven and connected to the toothed disc conveying mechanism (2) and the top rod seedling picking mechanism (4); the seedling tray loading mechanism (5) and the top rod seedling picking mechanism (4) are arranged vertically and are both located at the upper end of the seedling tray recycling mechanism (6); the seedling tray recycling mechanism (6) is located at the bottom of the toothed disc conveying mechanism (2); The input end of the transmission system (3) is connected to the power output device. After the power input passes through the transmission system (3), it drives the toothed disc conveying mechanism (2) to transport the seedling tray in the seedling tray loading mechanism (5) to the seedling ejection position. Then, the transmission system (3) drives the top rod seedling picking mechanism (4) to eject the seedlings in the seedling tray. After the seedlings are ejected, the seedling tray is recycled to the seedling tray recycling mechanism (6). The support mechanism (1) includes a support base plate (101), a left support side plate (102), a right support side plate (103), and a support rib plate (104). The left support side plate (102) and the right support side plate (103) are respectively disposed on both sides of the support base plate (101), and the support rib plate (104) is disposed at the bottom of the left support side plate (102) and the right support side plate (103). The toothed disc conveying mechanism (2), the transmission system (3), the top rod seedling picking mechanism (4), and the seedling tray loading mechanism (5) are all connected to the left support side plate (102) and the right support side plate (103). The seedling tray recycling mechanism (6) is disposed on the support base plate (101). The gear conveying mechanism (2) includes a central shaft (204) and a conveying section disposed on the central shaft (204). The two ends of the central shaft (204) are rotatably connected to the left support side plate (102) and the right support side plate (103), respectively. There are two sets of conveying sections, which are located between the left support side plate (102) and the right support side plate (103). The conveying section includes a gear (201), a gear support plate (202), a gear connector (203), a lower lever (205), and a cantilever bracket (206). The gear (201) is fixedly connected to the gear support plate (202) through the gear connector (203). The gear (201) and the gear support plate (206) are connected to each other. The support plate (202) is rotatably mounted on the central shaft (204); the cantilever bracket (206) is rotatably mounted on the central shaft (204) and located on the side of the toothed disc (201) away from the toothed disc support plate (202); one end of the cantilever bracket (206) is engaged with the transmission system (3), and the other end is fixedly connected to the lower lever (205), wherein the transmission system (3) drives the cantilever bracket (206) to reciprocate around the central shaft (204), the cantilever bracket (206) drives the lower lever (205) to reciprocate, and the lower lever (205) engages with the toothed disc (201) to drive the toothed disc (201) to rotate and transport the seedling tray; The transmission system (3) includes a drive shaft (301), a cam (302), an eccentric rocker arm (303), and a connecting rod assembly (304). The two ends of the drive shaft (301) are rotatably connected to the left support side plate (102) and the right support side plate (103) respectively, and are located below the central shaft (204); There are two eccentric rocker arms (303), and the two eccentric rocker arms (303) are respectively arranged corresponding to the two sets of cantilever brackets (206) of the conveying part; the first end of the eccentric rocker arm (303) is sleeved on the outside of the inner core of the eccentric shaft and rotatably connected to the inner core of the eccentric shaft. The inner core of the eccentric shaft is fixedly installed on the transmission shaft (301). The second end of the eccentric rocker arm (303) is rotatably connected to the end of the cantilever bracket (206) near the gear plate (201). The cam (302) is located at the center of the transmission shaft (301); the connecting rod assembly (304) is located on the side of the transmission shaft (301) away from the central shaft (204), and the non-end position of the connecting rod assembly (304) is rotatably connected to the left support side plate (102) and the right support side plate (103); one end of the connecting rod assembly (304) cooperates with the cam (302), and the other end cooperates with the top rod seedling picking mechanism (4) to drive the top rod seedling picking mechanism (4) to push out the seedlings in the seedling tray.

2. The rice seedling tray conveying and seedling picking device according to claim 1, characterized in that, The linkage assembly (304) includes an optical shaft (30401), push rods (30402), and push rod shaft (30403). The two ends of the optical shaft (30401) are fixedly connected to the left support side plate (102) and the right support side plate (103), respectively, and are positioned on the side of the transmission shaft (301) away from the central shaft (204). There are two push rods (30402), arranged relatively parallel to each other. The non-end positions of the two push rods (30402) are rotatably connected to the optical shaft (30401). The two push rods (30402) are... The two push rod shafts (30403) are connected by two push rod shafts (30403), which are respectively arranged on both sides of the optical axis (30401). The push rod shaft (30403) located at the first end of the two push rods (30402) cooperates with the cam (302). The second end of the two push rods (30402) is provided with a strip hole. The push rod drive shaft is provided in the two strip holes and is rotatably connected to it. The push rod drive shaft cooperates with the top rod seedling picking mechanism (4) to drive the top rod seedling picking mechanism (4) to push out the seedlings in the seedling tray.

3. The rice seedling tray conveying and seedling picking device according to claim 2, characterized in that, The top rod seedling picking mechanism (4) includes a top rod assembly I (401), a top rod assembly connector (403), and a top rod assembly II (402) connected in sequence. The top rod assembly I (401) and the top rod assembly II (402) are linearly connected to the cantilever bracket (206). The top rod assembly I (401) is used to push out the seedlings in the seedling tray. The push rod drive shaft is fixedly connected to the top rod assembly II (402). The top rod assembly connector (403) is located at the upper end of the central shaft (204).

4. The rice seedling tray conveying and seedling picking device according to claim 3, characterized in that, The top rod assembly I (401) includes a top rod assembly connecting plate I (40101), a top rod assembly connecting rod I (40102), a top rod welding plate (40103), and a seedling-taking top rod (40104). The top rod assembly connecting plate I (40101) and the top rod welding plate (40103) are connected by two oppositely arranged top rod assembly connecting rods I (40102). There are multiple seedling-taking top rods (40104), which are evenly arranged on the top rod welding plate (40103). The top rod assembly connecting plate I (40101) is fixedly connected to the first end of the top rod assembly connecting member (403). The top rod assembly II (402) includes a top rod assembly connecting plate II (40201), a top rod assembly connecting rod II (40202), a top rod assembly connecting plate one (40203), a top rod assembly connecting plate two (40204), and a top rod assembly front connecting plate II (40205). The top rod assembly front connecting plate II (40205) is arranged opposite to the top rod assembly connecting plate II (40201), and the top rod assembly front connecting plate II (40205) is fixedly connected to the second end of the top rod assembly connector (403). There are two top rod assembly connecting rods II (40202), which are arranged in parallel relative to each other and are fixedly connected to the top rod assembly front connecting plate II (40205) and the top rod assembly connecting plate II (40201). The first connecting plate of the push rod assembly (40203) and the second connecting plate of the push rod assembly (40204) are disposed between the two connecting rods II of the push rod assembly (40202). The two ends of the push rod drive shaft are respectively fixedly connected to the first connecting plate of the push rod assembly (40203) and the second connecting plate of the push rod assembly (40204). The two connecting rods I of the push rod assembly (40102) and the two connecting rods II of the push rod assembly (40202) are all linearly connected to the cantilever bracket (206) through linear bearings.

5. The rice seedling tray conveying and seedling picking device according to claim 1, characterized in that, The seedling tray loading mechanism (5) includes a seedling box (501), a seedling box support side plate (502), and a seedling box support bottom plate (503). There are two seedling box support side plates (502), and the two seedling box support side plates (502) are arranged in parallel relative to each other. The seedling box (501) is located at the upper end of the two seedling box support side plates (502). There are two seedling box support bottom plates (503), and the two seedling box support bottom plates (503) are arranged correspondingly to the two seedling box support side plates (502) and are located at the lower end of the side of the seedling box support side plate (502) away from the seedling box (501). The two seedling box support bottom plates (503) are respectively arranged correspondingly to the left support side plate (102) and the right support side plate (103), and are fixedly connected to the left support side plate (102) and the right support side plate (103).

6. The rice seedling tray conveying and seedling picking device according to claim 5, characterized in that, The seedling tray recycling mechanism (6) includes a seedling tray guide plate (601), a seedling tray guide bar (602), and a seedling tray recycling frame (603). There are two seedling tray guide plates (601), which are respectively arranged corresponding to the two side walls of the seedling box (501) and respectively fixedly connected to the left support side plate (102) and the right support side plate (103). The seedling tray recycling frame (603) is arranged on the upper end of the support base plate (101) and fixedly connected to the support base plate (101). The seedling tray guide bar (602) is correspondingly arranged with the middle rib of the seedling box (501), and the end of the seedling tray guide bar (602) away from the seedling box (501) is fixedly connected to the seedling tray recycling rack (603); wherein, the seedling tray guide plate (601) and the seedling tray guide bar (602) cooperate to guide the seedling tray after the seedling is pushed out by the top rod seedling picking mechanism (4) to the seedling tray recycling rack (603).

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