Sweet potato harvester

Abstract

The application relates to the technical field of crop harvesting equipment, and discloses a sweet potato harvester, which comprises a harvester body, a vibrating chain lever rotatably installed on the harvester body and arranged obliquely, a protective cover fixedly installed on one side of the harvester body, a conveying roller rotatably installed on the harvester body and arranged on the higher side in the vertical direction of the vibrating chain lever, and a discharging roller rotatably installed on the harvester body and arranged on the side of the conveying roller away from the vibrating chain lever. The sweet potatoes accumulated in front and back are separated through the speed difference between the conveying roller and the discharging roller, meanwhile, the dislocation arrangement of the push plates can assist in the conveying of the vines and prevent the vines from being wound in the conveying process of the sweet potatoes and the vines by the conveying roller, the sweet potatoes accumulated in close contact are separated to prevent the sweet potatoes from being damaged by collision in the discharging process, the damage rate in the sweet potato harvesting process is reduced, the keeping time of the sweet potatoes is ensured, and the profit rate of the sweet potatoes is improved.

Description

Technical Field

[0001] This application relates to the field of crop harvesting equipment technology, and in particular to a sweet potato harvester. Background Technology

[0002] Yam bean is an annual or perennial herbaceous vine belonging to the genus *Dioscorea* of the legume family. It is also known as jicama, sweet potato, and yam bean. Its edible part is the enlarged tuberous root, which is rich in nutrients, including sugar and protein.

[0003] When harvesting sweet potatoes, a tractor-driven harvester is usually used to move the harvester. The shovel on the harvester goes deep into the soil and shovels the soil and sweet potatoes together. Then, a vibration mechanism vibrates the soil and sweet potatoes to remove the soil and transport them. During the transportation process, the soil and sweet potatoes gradually separate and fall off. The sweet potatoes that have separated from the soil are transported to the end of the vibration mechanism and fall off again. Then, workers pick them up and load them onto a truck for the next process. In order to prevent the sweet potatoes from falling off naturally under the action of gravity without separating from the soil, the end of the vibration mechanism that is opposite to the direction of the harvester's forward movement is set to be tilted upward.

[0004] The inclined vibration mechanism causes larger sweet potatoes to roll down and pile up together during the conveying process when their own weight exceeds the friction force exerted by the vibration mechanism. Then, under the action of the vibration mechanism, they are conveyed and discharged synchronously. The two sweet potatoes that are piled up together may not only have their skins damaged due to mutual friction during the conveying process, affecting their shelf life, but also may have their skins damaged due to the collision between the two sweet potatoes during the discharge process, which may cause the next sweet potato to collide with the previous one, making it more likely to crack or brown inside, increasing the damage rate of the sweet potatoes and affecting the selling profit. Summary of the Invention

[0005] This application proposes a sweet potato harvester, which has the advantages of using staggered baffles to assist in the conveying of sweet potatoes and vines during the conveying process of the conveying rollers and prevent them from tangling, separating the sweet potatoes that are stuck together to prevent collision damage during the feeding process, reducing the damage rate of sweet potatoes during harvesting, ensuring the shelf life of sweet potatoes, and improving the profit margin of sweet potatoes. It is used to solve the problem that the large volume of sweet potatoes causes them to pile up and stick together during the conveying and soil removal process of sweet potatoes by the vibration mechanism, which affects the shelf life and damage rate of sweet potatoes.

[0006] To achieve the above objectives, this application adopts the following technical solution: a sweet potato harvester, including a harvester body and a vibrating chain rod rotatably mounted on the harvester body, wherein the vibrating chain rod is inclined. A protective cover is fixedly mounted on one side of the harvester body. A conveying roller is also rotatably mounted on the harvester body, and the conveying roller is positioned on the higher side in the vertical direction of the vibrating chain rod. A feeding roller is also rotatably mounted on the harvester body, and the feeding roller is positioned on the side of the conveying roller away from the vibrating chain rod. Multiple connecting rods are rotatably mounted on the outer side of one of the conveying rollers, and multiple levers are fixedly mounted on the outer side of the connecting rods. Adjusting plates adapted to the connecting rods are symmetrically rotatably mounted on both sides of the harvester body. When the conveying roller rotates to convey sweet potatoes, the levers separate the sweet potatoes that are stuck together, and the adjusting plates limit the connecting rods to prevent the levers from continuously squeezing the sweet potatoes.

[0007] Furthermore, support columns are symmetrically fixedly installed at the bottom of both ends of the connecting rod, and mounting cavities adapted to each support column are opened on the outer side of the conveying roller to provide movement space for the support columns. The bottom end of the support column is hinged to the inner wall of the mounting cavity.

[0008] Furthermore, a spring is fixedly installed between the support column and the inner wall of the mounting cavity, and the spring supports and limits the support column and the connecting rod.

[0009] Furthermore, adjusting columns are symmetrically fixedly installed at both ends of the connecting rod, a rotating shaft is rotatably installed on the inner side wall of the protective cover, a torsion spring is fitted on the outer side of the rotating shaft, and the elastic force of the torsion spring is greater than that of the spring. One end of the torsion spring is fixedly connected to the inner side wall of the protective cover, the other end of the torsion spring is fixedly connected to the rotating shaft, and an adjusting plate is fixedly installed at the end of the rotating shaft away from the torsion spring.

[0010] Furthermore, the plurality of the dial plates are arranged in an array along the axis of the conveying roller, and the dial plates on adjacent connecting rods are arranged alternately.

[0011] Furthermore, the end of the dial away from the connecting rod is rounded to provide cushioning when the dial moves the sweet potato.

[0012] The beneficial effects of this invention are as follows:

[0013] This application provides a sweet potato harvester that, during the process of conveying sweet potatoes by rotating the conveyor roller, separates the sweet potatoes piled up before and after by the speed difference between the conveyor roller and the feeding roller. At the same time, the staggered baffles can also assist in the conveying of the vines and prevent them from getting tangled during the conveying process of the sweet potatoes and vines. It separates the sweet potatoes that are piled up together to prevent them from being damaged by collision during the feeding process, thereby reducing the damage rate during the sweet potato harvesting process, ensuring the shelf life of the sweet potatoes, and improving the sales profit margin of the sweet potatoes. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort:

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a schematic diagram of the front cross-sectional structure of the protective cover of the present invention;

[0017] Figure 3 This is a schematic diagram of the structure of the conveying roller and the deflector plate of the present invention;

[0018] Figure 4 This is a schematic diagram of the main cross-sectional structure of the conveyor roller of the present invention;

[0019] Figure 5 For the present invention Figure 2 Enlarged structural diagram at point A in the middle.

[0020] In the diagram: 1. Harvester body; 2. Vibrating chain rod; 3. Protective cover; 4. Conveying roller; 5. Feeding roller; 6. Connecting rod; 601. Paddle plate; 7. Adjusting plate; 8. Mounting cavity; 9. Support column; 10. Spring; 11. Adjusting column; 12. Rotating shaft; 13. Torsion spring. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] See Figures 1 to 5A sweet potato harvester includes a harvester body 1. An inclined shovel is fixedly installed at one end of the harvester body 1. A vibrating chain rod 2 is rotatably installed on the harvester body 1. The power structure of the vibrating chain rod 2 is a common combination of sprocket and chain or pulley and belt in the prior art, which will not be described in detail here. The vibrating chain rod 2 is located at the higher end of the harvester body 1 in the vertical direction. A protective cover 3 is fixedly installed on one side of the harvester body 1 to protect the power structure of the vibrating chain rod 2 on the harvester body 1. Multiple conveying rollers 4 are rotatably installed on the harvester body 1, and the conveying rollers 4 are located at the end of the vibrating chain rod 2 away from the shovel. A feeding roller 5 is rotatably installed on the harvester body 1, and the feeding roller 5 is located at the end of the conveying rollers 4 away from the vibrating chain rod 2. The end of the harvester body 1 near the shovel is fixedly connected to an agricultural tractor.

[0023] The harvester body 1 is moved by a tractor. As the harvester body 1 moves, the shovel extends into the ground to scoop out the sweet potatoes and soil together, and then conveys them along the shovel to the end of the vibrating chain rod 2 near the shovel, which is the feeding end of the vibrating chain rod 2. The drive source on the tractor is connected to the vibrating chain rod 2 through a gearbox, driving the vibrating chain rod 2 to convey the soil and sweet potatoes in the opposite direction to the forward direction of the harvester body 1. During the conveying process, the sweet potatoes gradually separate from the soil under the action of vibration. At the same time, the conveying roller 4 and the unloading roller 5 are also connected to the drive shaft of the vibrating chain rod 2, such as through a sprocket chain or a belt drive, so that the conveying roller 4 and the unloading roller 5 rotate clockwise (towards...). Figure 2 For example, when the sweet potato separated from the soil is transported to the conveyor roller 4 and the discharge roller 5, it will continue to move until it falls to the surface of the soil, and then be picked up by workers and transported to the next processing process.

[0024] Since the vibrating chain 2 and the feeding roller 5 are both rounded at the ends near the conveying roller 4, and the conveying roller 4 is parallel, in order to prevent the sweet potatoes from being unable to be conveyed normally in the junction area between the vibrating chain 2 and the conveying roller 4 and the junction area between the conveying roller 4 and the feeding roller 5 due to large gaps, from a top-view perspective, the two sides of the conveying roller 4 near the vibrating chain 2 and the feeding roller 5 have a certain overlap area with the two, thereby ensuring that the spacing of the junction area is the same as the conveying spacing on the vibrating chain 2, and ensuring the normal conveying of sweet potatoes.

[0025] When the feeding roller 5 is connected to the power shaft of the vibrating chain rod 2 via a sprocket, chain, pulley, or belt, the conveying speed of the feeding roller 5 can be changed by the gear ratio, making the rotational speed of the feeding roller 5 greater than that of the vibrating chain rod 2 and the conveying roller 4. If two sweet potatoes are tilted and piled up due to inclination during the conveying stage of the vibrating chain rod 2, when the two piled-up sweet potatoes are conveyed to the feeding roller 5 by the conveying roller 4, the sweet potato that first comes into contact with the feeding roller 5 will accelerate due to the greater rotational speed of the feeding roller 5 than that of the conveying roller 4, and under the action of the feeding roller 5... When the sweet potato that was in contact with the feeding roller 5 is conveyed to the feeding roller 5, due to the speed difference between the conveying roller 4 and the feeding roller 5, the sweet potato gradually moves away from the original sweet potato as it falls downwards under the action of the feeding roller 5. This separates the two sweet potatoes during the conveying process, reducing the probability of the two sweet potatoes that were originally in contact with each other being squeezed and collided during the feeding process, thereby reducing the damage rate of the sweet potatoes. At the same time, the outer surface of the feeding roller 5 is covered with a highly elastic material to protect the sweet potatoes and prevent them from colliding with each other due to the speed difference between the conveying roller 4 and the feeding roller 5.

[0026] See Figure 3 and Figure 4 One of the conveying rollers 4 has multiple connecting rods 6 mounted on its outer side for rotatable limiting. These connecting rods 6 are arranged in an array around the axis of the conveying roller 4, with the side of the connecting rod 6 closest to the conveying roller 4 in contact with it. Multiple lever plates 601 are fixedly mounted on the top of each connecting rod 6, arranged in an array along the axis of the conveying roller 4. The lever plates 601 on adjacent connecting rods 6 are staggered. When the conveying roller 4 rotates, causing the connecting rods 6 and lever plates 601 to rotate synchronously, due to the staggered arrangement of the lever plates 601 on adjacent connecting rods 6, when two sweet potatoes stacked side-by-side along the axis of the conveying roller 4 move to the conveying roller 4, the lever plates 601 will interact with one of them. When a sweet potato comes into contact with and is moved, the two sweet potatoes are misaligned and no longer stick together. This prevents the two sticking sweet potatoes from rubbing against each other and getting damaged during the synchronous feeding process at the feeding roller 5. At the same time, although the workers will cut and remove the vines and green leaves on the soil surface before harvesting the sweet potatoes by the harvester body 1, the vines connected to the sweet potatoes still exist in the soil layer. Since the vines are light, they may stop when they move with the sweet potatoes due to the small friction between them and the conveying roller 4. Therefore, when the deflector plate 601 comes into contact with the vines above the conveying roller 4, the deflector plate 601 lifts up the vines to assist in their movement and prevent them from getting tangled.

[0027] See Figure 4Support columns 9 are symmetrically fixedly installed at the bottom of both ends of the connecting rod 6. The outer side of the conveying roller 4 is provided with mounting cavities 8 that are adapted to each support column 9 to provide movement space for the support columns 9. The bottom end of the support column 9 is hinged to the inner wall of the mounting cavity 8. When the support column 9 rotates inside the mounting cavity 8, it can drive the connecting rod 6 to rotate along the outer surface of the conveying roller 4. A spring 10 is fixedly installed between the support column 9 and the inner wall of the mounting cavity 8. The spring 10 supports and limits the support column 9 and the connecting rod 6. At the same time, the elastic support of the spring 10 on the support column 9 and the connecting rod 6 provides a certain buffer when the paddle plate 601 paddles the sweet potato, preventing damage to the surface of the sweet potato when the paddle plate 601 paddles the sweet potato.

[0028] See Figures 3 to 5 Adjusting columns 11 are symmetrically fixed at both ends of the connecting rod 6. Two rotating shafts 12 are symmetrically rotatably installed on both sides of the harvester body 1. One rotating shaft 12 is rotatably connected to the inner wall of the protective cover 3, and the other rotating shaft 12 is directly rotatably connected to the outer wall of the harvester body 1. A torsion spring 13 is fitted on the outer side of the rotating shaft 12, and the elastic force of the torsion spring 13 is greater than that of the spring 10. One end of the torsion spring 13 is fixedly connected to the inner wall of the protective cover 3, and the other end of the torsion spring 13 is fixedly connected to the rotating shaft 12. An adjusting plate 7 is fixedly installed at the end of the rotating shaft 12 away from the torsion spring 13. When the paddle plate 601 and the connecting rod 6 rotate with the conveyor roller 4 to paddle the sweet potato or vine, if the sweet potato or vine is not conveyed away by the adjacent conveyor roller 4 in time, it may be damaged or entangled with the conveyor roller 4 under the continuous squeezing of the paddle plate 601. Therefore, the conveyor roller 4 carries When the moving connecting rod 6 and the adjusting column 11 rotate to the adjusting plate 7, because the elastic force of the torsion spring 13 is greater than that of the spring 10, under the squeezing action of the adjusting plate 7 on the adjusting column 11, the adjusting column 11 and the connecting rod 6 no longer rotate synchronously when the conveying roller 4 continues to rotate, but rotate in opposite directions, thereby preventing the push plate 601 from continuously squeezing the sweet potato or vine. When the spring 10 is squeezed to its limit, the conveying roller 4 drives the adjusting column 11 through the support column 9 to overcome the elastic force of the rotating shaft 12, causing the adjusting plate 7 and the rotating shaft 12 to rotate, thereby allowing the adjusting column 11 to gradually separate from the adjusting plate 7. After the two separate, they are reset under the action of the elastic force of the spring 10 and the torsion spring 13, thus reserving a buffer time during the process of conveying sweet potatoes and vines through the conveying roller 4, so as to prevent the push plate 601 from squeezing and damaging the sweet potatoes and vines during the continuous conveying of sweet potatoes and vines by the adjacent conveying roller 4.

[0029] Working principle:

[0030] The harvester body 1 is moved by a tractor. As the harvester body 1 moves, the shovel extends into the ground to scoop out the sweet potatoes and soil together. The soil is then transported along the shovel to the end of the vibrating chain rod 2 near the shovel, which is the feeding end of the vibrating chain rod 2. The drive source on the tractor is connected to the vibrating chain rod 2 through the gearbox, which drives the vibrating chain rod 2 to transport the soil and sweet potatoes in the opposite direction to the forward direction of the harvester body 1. During the transportation process, the sweet potatoes gradually separate from the soil under the action of vibration. At the same time, the conveying roller 4 and the unloading roller 5 are also connected to the drive shaft of the vibrating chain rod 2, such as through a sprocket chain or belt drive, so that the conveying roller 4 and the unloading roller 5 rotate clockwise. Therefore, when the sweet potatoes separated from the soil are transported to the conveying roller 4 and the unloading roller 5, they will continue to move until they fall to the surface of the soil, where workers will pick them up and transport them to the next processing process.

[0031] When two sweet potatoes stacked side-by-side along the axis of the vibrating chain 2 move to the conveyor roller 4, the pry plate 601 contacts one of the sweet potatoes and pries it, causing the two sweet potatoes to shift out of place and no longer stick together. This prevents the two sticking sweet potatoes from rubbing against each other and getting damaged during the synchronous conveying to the feeding roller 5. At the same time, the pry plate 601 can also lift the vines above the conveyor roller 4, assisting in the movement of the vines and preventing them from getting tangled. As the pry plate 601 and connecting rod 6 rotate with the conveyor roller 4 and pry the sweet potatoes or vines, when the conveyor roller 4 drives the connecting rod 6 and adjusting column 11 to rotate to the adjusting plate 7, the spring force of the torsion spring 13 is greater than that of the spring force of the spring 10. The adjusting plate 7 squeezes the adjusting column 11. When the conveying roller 4 continues to rotate, the adjusting column 11 and the connecting rod 6 no longer rotate synchronously, but rotate in opposite directions. This prevents the paddle plate 601 from continuously squeezing the sweet potato or vines, causing damage to the sweet potato or entanglement of the vines. When the spring 10 is squeezed to its limit, the conveying roller 4 drives the adjusting column 11 through the support column 9 to overcome the elastic force of the rotating shaft 12, causing the adjusting plate 7 and the rotating shaft 12 to rotate. This allows the adjusting column 11 to gradually separate from the adjusting plate 7. After separation, both are reset under the action of the elastic force of the spring 10 and the torsion spring 13. This provides a buffer time during the conveying of sweet potatoes and vines by the conveying roller 4, preventing the paddle plate 601 from squeezing and damaging the sweet potatoes and vines during the continuous conveying of sweet potatoes and vines by the adjacent conveying roller 4.

[0032] After the sweet potatoes are separated and misaligned by the deflector plate 601 and the conveyor roller 4, the two are separated during the conveying process by the speed difference between the conveyor roller 4 and the feed roller 5, which further reduces the probability of the sweet potatoes being damaged by collision due to sticking together, thereby reducing the damage rate of the sweet potatoes.

[0033] The staggered baffles 601 assist in the conveying of sweet potatoes and vines during the conveying process of the conveying rollers 4, prevent them from tangling, separate the sweet potatoes that are stuck together to prevent collision damage during the feeding process, reduce the damage rate during the sweet potato harvesting process, ensure the sweet potatoes' shelf life, and improve the profit margin of sweet potatoes.

[0034] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A sweet potato harvester, comprising a harvester body (1), characterized in that, It also includes a vibrating chain rod (2) rotatably mounted on the harvester body (1), and the vibrating chain rod (2) is inclined. The harvester body (1) is also rotatably mounted with a conveying roller (4), and the conveying roller (4) is placed on the higher side of the vibrating chain rod (2) in the vertical direction. The harvester body (1) is also rotatably mounted with a feeding roller (5), and the feeding roller (5) is placed on the side of the conveying roller (4) away from the vibrating chain rod (2). Multiple connecting rods (6) are rotatably mounted on the outer side of one of the conveying rollers (4). Multiple levers (601) are fixedly mounted on the outer side of the connecting rods (6). Adjusting plates (7) adapted to the connecting rods (6) are symmetrically rotatably mounted on both sides of the harvester body (1). When the conveying roller (4) rotates to convey the sweet potatoes, the levers (601) are used to separate the sweet potatoes that are stuck together. At the same time, the adjusting plates (7) limit the connecting rods (6) to prevent the levers (601) from continuously squeezing the sweet potatoes.

2. The sweet potato harvester according to claim 1, characterized in that, Support columns (9) are symmetrically fixed at the bottom of both ends of the connecting rod (6). The outer side of the conveying roller (4) is provided with an installation cavity (8) that is adapted to each support column (9) to provide space for the support column (9). The bottom end of the support column (9) is hinged to the inner wall of the installation cavity (8).

3. A sweet potato harvester according to claim 2, characterized in that, A spring (10) is fixedly installed between the support column (9) and the inner wall of the mounting cavity (8), and the spring (10) supports and limits the support column (9) and the connecting rod (6).

4. A sweet potato harvester according to claim 3, characterized in that, Adjusting columns (11) are symmetrically fixed at both ends of the connecting rod (6). A protective cover (3) is fixedly installed on one side of the harvester body (1). A rotating shaft (12) is rotatably installed on the inner wall of the protective cover (3). A torsion spring (13) is fitted on the outer side of the rotating shaft (12), and the elastic force of the torsion spring (13) is greater than that of the spring (10). One end of the torsion spring (13) is fixedly connected to the inner wall of the protective cover (3), and the other end of the torsion spring (13) is fixedly connected to the rotating shaft (12). An adjusting plate (7) is fixedly installed at the end of the rotating shaft (12) away from the torsion spring (13).

5. A sweet potato harvester according to claim 1, characterized in that, Multiple dial plates (601) are arranged in an array along the axial direction of the conveying roller (4), and the dial plates (601) on two adjacent connecting rods (6) are staggered.

6. A sweet potato harvester according to claim 5, characterized in that, The end of the dial (601) away from the connecting rod (6) is rounded to provide cushioning when the dial (601) moves the sweet potato.

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