An efficient potato metering device

Abstract

The present application relates to a high-efficiency potato seed meter, which relates to the technical field of agricultural machinery; it includes a seed barrel main frame, which is vertically arranged and has a clearance hole along its length; a seed box, which is connected to the seed barrel main frame and is located on the side of the seed barrel main frame where the clearance hole is opened, and is used to provide potato seeds; a seeding chain, which is connected to the seed barrel main frame and is partially located in the seed box; a plurality of seed spoons are provided, and the seed spoons are equidistantly connected to the circumference of the seeding chain, and the seed spoons are used to scoop potato seeds in the seed box; a weight reducing member, which is connected to the seed barrel main frame and is used to remove excess potato seeds in the seed spoon; the weight reducing member includes a weight reducing motor and an eccentric wheel, the weight reducing motor is connected to the seed barrel main frame, the eccentric wheel is coaxially fixedly connected to the output shaft of the weight reducing motor, and the eccentric wheel passes through the clearance hole and abuts against the seeding chain; the seed barrel main frame is connected to a tensioning member, and the tensioning member is used to adjust the tension of the seeding chain. The present application has the effect of reducing the reseeding rate of potato seeds.

Description

Technical Field

[0001] The present application relates to the technical field of agricultural machinery, and in particular to a high-efficiency potato seed metering device. Background Art

[0002] The potato seed drill is a device widely used in potato planting after the hand tractor plowing and manual sowing in the furrows. It is a device that has been widely used in potato planting with the development of technological innovation and scientific and technological progress. It can save time and effort to sow potato seeds in the land, greatly improving planting efficiency.

[0003] The existing Chinese patent with reference publication number CN202385486U discloses a potato planter, comprising a machine base assembled from a supporting base plate, a seed storage box connected to a vertical support at the upper portion of the supporting base plate, and a lower seed discharge conduit at the lower portion. The upper and lower support plates are respectively equipped with an upper seed discharge sprocket and a lower seed discharge sprocket. A seed discharge chain is connected between the upper and lower seed discharge sprockets. Seed lifting bowls are evenly distributed on the outer circumference of the seed discharge chain. A furrow opener and a clutch handle are fixed to the front of the seed storage box. The seed discharge chain is coordinated with a transmission device. The transmission box fixed on the machine base is coordinated with the right half-axle of a walking tractor. When in use, the transmission device transmits power to the seed discharge chain. The seed discharge chain rotates and drives the seed discharge bowl to move from the bottom end of the support plate to the top end, scooping potato seeds from the seed storage box at the same time. As the seed discharge bowl opens downward, the potato seeds fall into the field, completing the potato sowing.

[0004] With respect to the above-mentioned related technologies, when the seed lifting bowl scoops the potato seeds in the seed storage box, there may be two potato seeds in the same seed lifting bowl, thereby resulting in a high reseeding rate of the potato seeds. Summary of the Invention

[0005] In order to solve the defect of high reseeding rate of potato seeds, the present application provides a high-efficiency potato seed metering device.

[0006] The present application provides an efficient potato seed metering device, which adopts the following technical solution: it includes a seed barrel main frame, which is vertically arranged and has a clearance hole along its length; a seed box, which is connected to the seed barrel main frame and is located on the side of the seed barrel main frame where the clearance hole is opened, and is used to provide potato seeds; a seeding chain, which is connected to the seed barrel main frame and is partially located in the seed box; a plurality of seed spoons are provided, and the seed spoons are equidistantly connected to the circumference of the seeding chain, and the seed spoons are used to scoop potato seeds in the seed box; a weight reducing member, which is connected to the seed barrel main frame and is used to remove excess potato seeds in the seed spoon; the weight reducing member includes a weight reducing motor and an eccentric wheel, the weight reducing motor is connected to the seed barrel main frame, the eccentric wheel is coaxially and fixedly connected to the output shaft of the weight reducing motor, and the eccentric wheel passes through the clearance hole and abuts against the seeding chain; the seed barrel main frame is connected to a tensioning member, and the tensioning member is used to adjust the tension of the seeding chain.

[0007] By adopting the above technical solution, when in use, the seeding chain rotates, thereby driving the seed spoon to scoop potato seeds from the seed box; at this time, the weight-reducing motor is started, and the weight-reducing motor rotates to drive the eccentric wheel to knock the seeding chain. At the same time, the tensioning member keeps the seeding chain in a vibrating state in a taut state; thereby, the excess potato seeds in the seed spoon are removed, leaving only one potato seed in the seed spoon; at the same time, the transmission of the potato seeds is ensured, thereby achieving the effect of reducing the potato seed reseeding rate.

[0008] Preferably, it also includes a transmission shaft, which is connected to the seed barrel main frame and meshes with the seeding chain; the side wall of the seed barrel main frame is provided with a through hole along its length direction, and the transmission shaft is located in the through hole; the tensioning member includes a rotating sleeve, an adjusting rod, a tensioning spring and a connecting plate; the rotating sleeve is arranged on the circumferential outer wall of the transmission shaft and is rotatably connected to the transmission shaft, and the rotating sleeve slides along the length direction of the through hole; one end of the adjusting rod is fixedly connected to the circumferential outer wall of the rotating sleeve, and the remaining end passes through the connecting plate and is slidably connected to the connecting plate, and the connecting plate is connected to the seed barrel main frame; the tensioning spring is arranged on the circumferential outer wall of the adjusting rod and is located between the connecting plate and the rotating sleeve.

[0009] By adopting the above technical solution, when the tensioning member adjusts the seeding chain, the tensioning spring is continuously compressed and reset, and at the same time the adjusting rod slides along its length direction; the setting of the tensioning spring and the adjusting rod realizes the automatic reset of the rotating sleeve, thereby achieving the effect of adjusting the seeding chain to always be in a tensioned state.

[0010] Preferably, the tensioning member further includes a limiting bolt, which is coaxially connected to the adjusting rod; and the limiting bolt is located below the connecting plate.

[0011] By adopting the above technical solution, when the tensioning spring needs to be replaced with a new one or a different model, the limiting bolt can facilitate the replacement of the tensioning spring.

[0012] Preferably, the seed spoon includes a mounting plate, a limiting plate and a supporting plate; the mounting plate is connected to the seeding chain; two limiting plates are provided, the two limiting plates are parallel to each other and vertically fixedly connected to the side wall of the mounting plate away from the seeding chain; the limiting plate is located between the two supporting plates and is parallel to the limiting plates, and the limiting plates are equidistantly distributed between the two limiting plates; a supporting groove is provided on the upper surface of the supporting plate, and the potato seeds are located in the supporting groove.

[0013] By adopting the above technical solution, potato seeds need to be covered with grass and tree ash during the cultivation process, and the tree ash and grass are cleaned before planting; however, during the planting process, a small amount of tree ash and broken grass are still adhered to the surface of the potato seeds. When a large number of potatoes are planted, the gap between the limiting plate and the supporting plate facilitates the accumulation of tree ash to fall, thereby ensuring the volume of the supporting groove. Even if potatoes are planted in large quantities for a long time, potato seeds can still be scooped from the seed box, thereby reducing the leakage rate of potato seeds.

[0014] Preferably, the seed barrel main frame is connected to a seed box on one side of which is connected a reseeding piece; the reseeding piece includes a reseeding box, a stop plate and a reseeding plate; the reseeding box is provided with a reseeding opening at the bottom end of the side wall close to the seed barrel main frame; two stop plates are provided, and the two stop plates are parallel to each other, respectively located on both sides of the reseeding opening, and fixedly connected to the reseeding box and the seed barrel main frame; the reseeding plate is located between the two stop plates and hinged to the bottom plate of the reseeding box, and the reseeding plate is in a horizontal state; and the reseeding plate does not abut against the stop plate; the reseeding plate is provided with a plug-in hole, and the load-bearing plate is plugged into the plug-in hole; the two limit plates are respectively plugged into the gap between the reseeding plate and the two stop plates.

[0015] By adopting the above technical solution, after the seed spoon scoops up the potato seeds through the seed box, the seed spoon is conveyed by the seed chain and abuts against the reseeding plate; when there are potato seeds in the seed spoon, the potato seeds push the reseeding plate to rotate to the side close to the reseeding port, and the seed spoon passes through the reseeding piece at this time; when the seed spoon misses the potato seeds, the supporting plate passes through the plug hole, and the limit plate passes through the gap between the stop plate and the reseeding plate; at this time, the seed spoon places the potato seeds above the reseeding plate in the supporting groove, thereby completing the reseeding of the potato seeds, thereby reducing the possibility of missing potato seeds, and at the same time achieving the effect of automatically identifying and distinguishing whether there are potato seeds in the seed spoon.

[0016] Preferably, the reseeding piece is located above the weight reducing piece.

[0017] By adopting the above technical solution, when the weight reducing piece removes the excess seeds in the seed spoon, if the only seed in the seed spoon is accidentally removed, the reseeding piece can also reseed it in time. The reseeding piece and the weight reducing piece are used in conjunction to reduce the possibility of missing potatoes and reseeding.

[0018] Preferably, a guide plate is fixedly connected to the lower surface of the stop plate; the two guide plates are inclined toward sides away from each other from one end close to the stop plate to one end away from the stop plate.

[0019] By adopting the above technical solution, the setting of the guide plate makes it easier for the seed spoon to enter between the two stop plates, thereby improving the smoothness of the rotation of the seeding chain.

[0020] Preferably, a material guide plate is provided in the reseeding box, the material guide plate is tilted and fixedly connected to the reseeding plate, and an adjustment spring is provided between the end of the guide plate away from the reseeding plate and the bottom plate of the reseeding box.

[0021] By adopting the above technical solution, when seeds leak out of the seed spoon, after the seed spoon takes away the potato seeds located above the reseeding plate, the inclined guide plate can replenish the potato seeds for the reseeding plate in time; when there are potato seeds in the seed spoon, when the reseeding plate gives way, the guide plate compresses the adjustment spring. At this time, the guide plate is gradually in a horizontal state, and the space for holding potato seeds in the reseeding box is increased, which facilitates the reseeding plate to give way and reduces the possibility of stress between the potato seeds; at the same time, the setting of the adjustment spring facilitates the resetting of the guide plate.

[0022] In summary, this application includes at least one of the following beneficial technical effects:

[0023] 1. The weight-reducing motor rotates and drives the eccentric wheel to strike the seeding chain. At the same time, the tensioner keeps the seeding chain in a vibrating state taut, thereby removing the excess potato seeds in the seed scoop, leaving only one potato seed in the seed scoop. At the same time, the transmission of the potato seeds is ensured, thereby achieving the effect of reducing the potato seed reseeding rate.

[0024] 2. After the seed spoon scoops up the potato seeds through the seed box, it is conveyed by the seeding chain and comes into contact with the reseeding plate; when there are potato seeds in the seed spoon, the potato seeds push the reseeding plate to rotate toward the side close to the reseeding opening, and the seed spoon passes through the reseeding piece at this time; when the seed spoon misses the potato seeds, the carrying plate passes through the plug hole, and the limit plate passes through the gap between the stop plate and the reseeding plate; at this time, the seed spoon places the potato seeds above the reseeding plate into the carrying groove, thereby completing the reseeding of the potato seeds, reducing the possibility of missing the potato seeds, and achieving the effect of automatically identifying and distinguishing whether there are potato seeds in the seed spoon;

[0025] 3. When seeds leak out of the seed spoon, after the seed spoon takes away the potato seeds above the reseeding plate, the inclined guide plate can replenish the potato seeds for the reseeding plate in time; when there are potato seeds in the seed spoon, when the reseeding plate gives way, the guide plate compresses the adjustment spring. At this time, the guide plate is gradually in a horizontal state, and the space for holding potato seeds in the reseeding box is increased, which is convenient for the reseeding plate to give way and reduces the possibility of stress between potato seeds; at the same time, the setting of the adjustment spring facilitates the reset of the guide plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application;

[0027] Figure 2 This is a schematic diagram showing the parts of the seeding chain;

[0028] Figure 3 yes Figure 2 A partial enlarged schematic diagram of part A;

[0029] Figure 4It is a schematic diagram of parts showing the reseeding component;

[0030] Figure 5 It is a sectional view showing the reseeding component;

[0031] Figure 6 It is a top view showing the insertion hole.

[0032] In the figure, 1 is the main frame of the seed cylinder; 11 is the relief hole; 12 is the through hole; 2 is the seed box; 3 is the seed metering chain; 4 is the seed spoon; 41 is the mounting plate; 42 is the limit plate; 43 is the bearing plate; 431 is the bearing groove; 5 is the weight reduction component; 51 is the weight reduction motor; 52 is the eccentric wheel; 6 is the tensioning component; 61 is the rotating sleeve; 62 is the adjusting rod; 63 is the tension spring; 64 is the connecting plate; 65 is the limit bolt; 7 is the transmission shaft; 8 is the reseeding component; 81 is the reseeding box; 811 is the reseeding port; 82 is the stop plate; 821 is the guide plate; 83 is the reseeding plate; 831 is the insertion hole; 9 is the material guiding plate; 91 is the adjusting spring. Detailed implementation manners

[0033] The following further elaborates on this application Figures 1-6 in conjunction with the appended

[0034] The embodiment of this application discloses an efficient potato seed metering device.

[0035] Referring to Figure 1 and Figure 2 , the efficient potato seed metering device includes the main frame 1 of the seed cylinder, the seed box 2, the seed metering chain 3, the seed spoon 4 and the weight reduction component 5; the main frame 1 of the seed cylinder is vertically arranged, and a relief hole 11 is provided along the length direction of the main frame 1 of the seed cylinder; the seed box 2 is fixedly connected to the side wall of the main frame 1 of the seed cylinder where the relief hole 11 is provided, and is located at the bottom end of the main frame 1 of the seed cylinder; the seed box 2 is used to provide potato seeds. The seed metering chain 3 is connected to the main frame 1 of the seed cylinder, and part of the seed metering chain 3 is located inside the seed box 2. Specifically, a through hole 12 is provided along the length direction of the side wall of the main frame 1 of the seed cylinder; the efficient potato seed metering device further includes a transmission shaft 7, the transmission shaft 7 is located inside the through hole 12 and is connected to the main frame 1 of the seed cylinder, and the seed metering chain 3 meshes with the transmission shaft 7.

[0036] ]>Referring to Figure 2 and Figure 3, a plurality of seed spoons 4 are provided, and the seed spoons 4 are equidistantly connected to the circumference of the seeding chain 3, and the seed spoons 4 are used to scoop potato seeds in the seed box 2; specifically, the seed spoon 4 includes a mounting plate 41, a limiting plate 42 and a bearing plate 43; the mounting plate 41 is connected to the seeding chain 3; there are two limiting plates 42, and the two limiting plates 42 are parallel to each other and vertically fixedly connected to the side wall of the mounting plate 41 away from the seeding chain 3; the limiting plate 42 is located between the two bearing plates 43 and is parallel to the limiting plate 42. In this embodiment, there are two limiting plates 42, and the two limiting plates 42 are equidistantly distributed between the two limiting plates 42. A bearing groove 431 is opened on the upper surface of the bearing plate 43, and the potato seeds are located in the bearing groove 431.

[0037] refer to Figure 1 and Figure 2 The weight reducing component 5 is connected to the main frame of the seed barrel 1 and is used to remove excess potato seeds in the seed spoon 4. The weight reducing component 5 includes a weight reducing motor 51 and an eccentric wheel 52. The weight reducing motor 51 is connected to the main frame of the seed barrel 1, and the eccentric wheel 52 is coaxially fixedly connected to the output shaft of the weight reducing motor 51, and the eccentric wheel 52 passes through the seed chain 3 of the clearance hole 11 and abuts against it.

[0038] refer to Figure 1 and Figure 2 The seed barrel main frame 1 is connected to a tensioning piece 6, which is used to adjust the tension of the seeding chain 3; specifically, the tensioning piece 6 includes a rotating sleeve 61, an adjusting rod 62, a tensioning spring 63, a connecting plate 64 and a limiting bolt 65. The rotating sleeve 61 is sleeved on the circumferential outer wall of the transmission shaft 7 and is rotatably connected to the transmission shaft 7, and the rotating sleeve 61 slides along the length direction of the through hole 12; one end of the adjusting rod 62 is fixedly connected to the circumferential outer wall of the rotating sleeve 61, and the remaining end passes through the connecting plate 64 and is slidably connected to the connecting plate 64; the limiting bolt 65 is coaxially connected to the adjusting rod 62, and the limiting bolt 65 is located below the connecting plate 64; the connecting plate 64 is connected to the seed barrel main frame 1, and the tensioning spring 63 is sleeved on the circumferential outer wall of the adjusting rod 62 and is located between the connecting plate 64 and the rotating sleeve 61.

[0039] During use, the transmission shaft 7 is connected to the external power device, and the transmission shaft 7 drives the seeding chain 3 to rotate, and then drives the seed spoon 4 to scoop potato seeds from the seed box 2; at this time, the weight reduction motor 51 is started, and the weight reduction motor 51 rotates to drive the eccentric wheel 52 to knock the seeding chain 3; at this time, the tensioning spring 63 is continuously compressed and reset, and at the same time, the adjusting rod 62 slides along its length direction, thereby achieving the seeding chain 3 driving the seed spoon 4 to vibrate while still being in a taut state; while achieving the improvement of the stability of the seeding chain 3 in conveying potato seeds; achieving the removal of excess potato seeds in the seed spoon 4, leaving only one potato seed in the seed spoon 4, achieving the effect of reducing the potato seed reseeding rate.

[0040] When the tension spring 63 needs to be replaced with a new one or a different model, the limit bolt 65 facilitates the replacement of the tension spring 63. Since potato seeds need to be covered with grass and tree ash during the cultivation process, the tree ash and grass are cleaned before planting; however, during the planting process, there is still a small amount of tree ash and broken grass adhering to the surface of the potato seeds. When planting a large number of potatoes, the gap between the limit plate 42 and the bearing plate 43 facilitates the accumulation of tree ash, thereby ensuring the volume of the bearing groove 431. Potatoes can still be scooped from the seed box 2 during long-term large-scale potato planting, thereby reducing the seed leakage rate of potato seeds.

[0041] Reference Figure 4 and Figure 5 On one side of the main frame 1 of the seed cylinder, a supplementary seeding member 8 is connected to the seed box 2, and the supplementary seeding member 8 is located above the weight reduction member 5; specifically, the supplementary seeding member 8 includes a supplementary seeding box 81, a stop plate 82, and a supplementary seeding plate 83; a supplementary seeding port 811 is provided at the bottom end of the side wall of the supplementary seeding box 81 close to the main frame 1 of the seed cylinder; there are two stop plates 82, the two stop plates 82 are parallel to each other, and the two stop plates 82 are respectively located on both sides of the supplementary seeding port 811 and are fixedly connected to the supplementary seeding box 81 and the main frame 1 of the seed cylinder; a guide plate 821 is fixedly connected to the lower surface of the stop plate 82, and the two guide plates 821 gradually incline away from each other from the end close to the stop plate 82 to the end away from the stop plate 82.

[0042] Reference Figure 5 and Figure 6 The supplementary seeding plate 83 is located between the two stop plates 82 and is hinged to the bottom plate of the supplementary seeding box 81. The supplementary seeding plate 83 is in a horizontal state and does not abut against the stop plate 82. The supplementary seeding plate 83 is provided with a plug hole 831, and the bearing plate 43 is inserted into the plug hole 831. The two limit plates 42 are respectively inserted into the gaps between the supplementary seeding plate 83 and the two stop plates 82.

[0043] Reference Figure 5 and Figure 6 A guide plate 9 is arranged in the supplementary seeding box 81. The guide plate 9 is inclined and fixedly connected to the supplementary seeding plate 83. An adjusting spring 91 is arranged between the end of the guide plate 821 away from the supplementary seeding plate 83 and the bottom plate of the supplementary seeding box 81.

[0044] When in use, after the seed spoon 4 passes through the seed box 2 to scoop up potato seeds, the seed spoon 4 is transported along the seeding chain 3, and the weight reducing piece 5 removes the excess seeds in the seed spoon 4. The seed spoon 4 continues to be transported under the action of the seeding chain 3, and then the seed spoon 4 abuts against the reseeding plate 83; when there are potato seeds in the seed spoon 4, under the guidance of the two guide plates 821, the seed spoon 4 enters between the two stop plates 82, and the potato seeds push the reseeding plate 83 to rotate to the side close to the reseeding port 811. At this time, the seed spoon 4 passes through the reseeding piece 8; when the seed spoon 4 misses the potato seeds, the supporting plate 43 passes through the plug hole 831, and the limiting plate 42 passes through the gap between the stop plate 82 and the reseeding plate 83; at this time, the seed spoon 4 places the potato seeds above the reseeding plate 83 in the supporting groove 431, thereby completing the reseeding of the potato seeds, thereby reducing the possibility of missing potato seeds, and at the same time achieving the effect of automatically identifying and distinguishing whether there are potato seeds in the seed spoon 4. The reseeding piece 8 is located above the weight reducing piece 5. If the weight reducing piece 5 accidentally removes the only seed in the seed spoon 4, the reseeding piece 8 can also reseed in time. The use of the reseeding piece 8 and the weight reducing piece 5 reduces the possibility of missing potatoes and reseeding.

[0045] When the seed scoop 4 leaks seeds, it removes the potato seeds above the reseeding plate 83. The inclined guide plate 9 can replenish the potato seeds to the reseeding plate 83 in time. When the seed scoop 4 does not leak seeds, the reseeding plate 83 gives way. At this time, the guide plate 821 compresses the adjustment spring 91, and the guide plate 821 gradually becomes horizontal. The space for holding potato seeds in the reseeding box 81 is increased, making it easier for the reseeding plate 83 to give way and reducing the possibility of stress between the potato seeds. The adjustment spring 91 also facilitates the return of the guide plate 9, making it easier for the operator to use the device.

[0046] The implementation principle of an efficient potato seed metering device in the embodiment of the present application is as follows: the transmission shaft 7 drives the seed metering chain 3 to rotate, and then drives the seed spoon 4 to scoop potato seeds from the seed box 2, and at the same time starts the weight reduction motor 51, and the weight reduction motor 51 drives the eccentric wheel 52 to rotate. With the cooperation of the tensioning member 6, the eccentric wheel 52 drives the seed metering chain 3 and the seed spoon 4 to vibrate, thereby removing excess potato seeds in the seed spoon 4; as the seed spoon 4 moves upward, when there are seeds in the seed spoon 4, the seed spoon 4 pushes the reseeding plate 83 to flip, and the seed spoon 4 passes through the reseeding member 8; when there are no potato seeds in the seed spoon 4, the seed spoon 4 passes through the reseeding plate 83, thereby replenishing potato seeds; thereby achieving the effect of reducing the possibility of potato seed missing and reseeding, and at the same time, no manual intervention is required.

[0047] The embodiments of this specific implementation method are all preferred embodiments of the present application and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. An efficient potato metering device, characterized in that: include: The seed tube main frame (1) is vertically arranged and has a clearance hole (11) along its length direction; A seed box (2) is connected to the seed barrel main frame (1) and is located on a side of the seed barrel main frame (1) where a clearance hole (11) is provided, and is used to provide potato seeds; A seeding chain (3) is connected to the seed barrel main frame (1) and is partially located in the seed box (2); A plurality of seed spoons (4) are provided, the seed spoons (4) are connected to the seeding chain (3) at equal intervals in the circumferential direction, and the seed spoons (4) are used to scoop potato seeds in the seed box (2); The weight reducing member (5) is connected to the seed barrel main frame (1) and is used to remove excess potato seeds in the seed spoon (4); the weight reducing member (5) includes a weight reducing motor (51) and an eccentric wheel (52); the weight reducing motor (51) is connected to the seed barrel main frame (1); the eccentric wheel (52) is coaxially fixedly connected to the output shaft of the weight reducing motor (51); and the eccentric wheel (52) passes through the clearance hole (11) and abuts against the seeding chain (3); The seed spoon (4) comprises a mounting plate (41), a limiting plate (42) and a bearing plate (43); the mounting plate (41) is connected to the seeding chain (3); two limiting plates (42) are provided, and the two limiting plates (42) are parallel to each other and vertically fixedly connected to the side wall of the mounting plate (41) away from the seeding chain (3); the limiting plate (42) is located between the two bearing plates (43) and is parallel to the limiting plate (42), and the limiting plates (42) are equidistantly distributed between the two limiting plates (42); a bearing groove (431) is provided on the upper surface of the bearing plate (43), and the potato seeds are located in the bearing groove (431); The seed drum main frame (1) is connected to a tensioning member (6), and the tensioning member (6) is used to adjust the tension of the seeding chain (3); The seed barrel main frame (1) is connected to a seed box (2) on one side thereof, and is connected to a seed supplement component (8); the seed supplement component (8) comprises a seed supplement box (81), a stop plate (82) and a seed supplement plate (83); A reseeding opening (811) is provided at the bottom end of the side wall of the reseeding box (81) close to the seed barrel main frame (1); two stop plates (82) are provided, and the two stop plates (82) are parallel to each other and are respectively located on both sides of the reseeding opening (811), and are fixedly connected to the reseeding box (81) and the seed barrel main frame (1); The reseeding plate (83) is located between the two stop plates (82) and is hinged to the bottom plate of the reseeding box (81). The reseeding plate (83) is in a horizontal state; and the reseeding plate (83) and the stop plate (82) do not abut against each other; the reseeding plate (83) is provided with a plug hole (831), and the bearing plate (43) is plugged into the plug hole (831); the two limit plates (42) are respectively plugged into the gaps between the reseeding plate (83) and the two stop plates (82).

2. The high-efficiency potato metering device according to claim 1, characterized in that: It also includes a transmission shaft (7), which is connected to the seed barrel main frame (1) and meshes with the seeding chain (3); a through hole (12) is opened on the side wall of the seed barrel main frame (1) along its length direction, and the transmission shaft (7) is located in the through hole (12); The tensioning member (6) includes a rotating sleeve (61), an adjusting rod (62), a tensioning spring (63), and a connecting plate (64); the rotating sleeve (61) is sleeved on the outer wall of the transmission shaft (7) and is rotatably connected to the transmission shaft (7), and the rotating sleeve (61) slides along the length direction of the through hole (12); one end of the adjusting rod (62) is fixedly connected to the outer wall of the rotating sleeve (61), and the remaining end passes through the connecting plate (64) and is slidably connected to the connecting plate (64), and the connecting plate (64) is connected to the main frame (1) of the seed cylinder; the tensioning spring (63) is sleeved on the outer wall of the adjusting rod (62) and is located between the connecting plate (64) and the rotating sleeve (61).

3. The efficient potato metering device according to claim 2, wherein: The tensioning member (6) further includes a limit bolt (65), and the limit bolt (65) is coaxially connected to the adjusting rod (62); and the limit bolt (65) is located below the connecting plate (64).

4. An efficient potato metering device according to claim 1, characterized in that: The reseeding member (8) is located above the weight reducing member (5).

5. An efficient potato metering device according to claim 1, characterized in that: A guide plate (821) is fixedly connected to the lower surface of the stop plate (82); the two guide plates (821) are inclined away from each other from the end close to the stop plate (82) to the end away from the stop plate (82).

6. The efficient potato metering device according to claim 4, characterized in that: A guide plate (9) is arranged in the reseeding box (81), the guide plate (9) is inclined and fixedly connected to the reseeding plate (83), and an adjusting spring (91) is arranged between the end of the guide plate (821) away from the reseeding plate (83) and the bottom plate of the reseeding box (81).

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