Potato harvesting device and harvesting method

Abstract

The present invention relates to the technical field of potato harvesting. The present invention provides a potato harvesting device and a harvesting method. The potato harvesting device comprises a cleaning device, a mud and liquid receiving barrel, a clean liquid barrel and a compression device. The mud and liquid receiving barrel has a compression chamber arranged in sequence from bottom to top. The compression device comprises a compression cylinder, a compression plate, a lifting frame and a lifting rod. The compression cylinder is connected to the lifting frame and is configured to enter the compression chamber through the outlet of the compression device under the drive of the lifting frame. The compression plate is arranged in the compression cylinder, and a liquid outlet perforation is arranged on the compression plate; the compression plate is connected to the lifting rod. The outlet of the clean liquid barrel is connected to the inlet of the pump. The potato harvesting device can clean the soil on the potatoes, realize the cleaning of the potatoes, and will not cause the slippery land to affect the forward movement of the vehicle body to prevent rollover accidents, etc., and can also prevent the cleaning liquid from polluting the soil as much as possible, so as to protect the soil.

Description

Technical Field

[0001] The invention relates to the technical field of potato harvesting, in particular to a potato harvesting device and a harvesting method for use in hilly and mountainous areas. Background Art

[0002] As one of the main food crops, potato is a kind of crop that can be used as both food and vegetable. How to improve the level of mechanization in the whole process of potato production is of great significance to promoting the process of potato becoming a staple food and ensuring food security. In the prior art, potatoes are basically not washed when they are harvested. Potatoes will carry a large amount of soil, and the soil cannot be returned to the land. Especially in hilly and mountainous areas, soil loss will affect the quality of the land. If the potatoes are washed directly, there will be a large area of ​​water on the land, causing the fields to be muddy, making it difficult for the harvesting device to move forward, and easy to overturn. If a cleaning fluid is used for cleaning, the cleaning fluid will cause certain pollution to the soil. Summary of the invention

[0003] In view of the above problems, the present invention is proposed to provide a potato harvesting device and a harvesting method that overcome the above problems or at least partially solve the above problems, and can prevent the cleaning liquid from flowing onto the land along with the soil, causing the land to be slippery and affecting the movement of the potato harvesting device, especially on hilly or steeply sloped land, and can also prevent the cleaning liquid from contaminating the soil as much as possible.

[0004] Specifically, the present invention provides a potato harvesting device, comprising a vehicle body, and a digging device and a potato conveying device mounted on the vehicle body, wherein the potato conveying device comprises:

[0005] a cleaning device, the cleaning device being configured to clean potatoes;

[0006] A mud and liquid receiving barrel, wherein the mud and liquid receiving barrel has a compression chamber and a liquid receiving chamber arranged in sequence from bottom to top; the compression chamber is cylindrical, and the cross-sectional area of ​​the liquid receiving chamber is larger than the area of ​​the compression chamber; the liquid receiving chamber is provided with an inlet, a compression device outlet and a clean liquid outlet, and a filter is provided at the clean liquid outlet; the inlet receives the mud and liquid cleaned by the cleaning device; the compression device outlet is coaxially arranged with the compression chamber;

[0007] a cleaning liquid barrel, the cleaning liquid barrel being connected to the cleaning liquid outlet and configured to provide cleaning liquid to the cleaning device;

[0008] A compression device, comprising a compression cylinder, a compression plate, a lifting frame and a lifting rod; the compression cylinder is connected to the lifting frame and is configured to enter the compression chamber through the compression device outlet under the drive of the lifting frame; the compression plate is arranged in the compression cylinder, and a liquid outlet through hole is arranged on the compression plate; the compression plate is connected to the lifting rod.

[0009] Optionally, the potato harvesting device further comprises:

[0010] a first rotating device, the first rotating device being configured to drive the compression device to rotate;

[0011] a second rotating device, the second rotating device being configured to drive the lifting rod and the compression plate to rotate;

[0012] The scraper is horizontally arranged at the lower end of the compression cylinder, and the upper edge and the lower edge of each scraper are scraping edges.

[0013] Optionally, a mounting frame is provided on the vehicle body;

[0014] The first rotating device comprises a rotating frame, and the rotating frame is rotatably mounted on the mounting frame;

[0015] The lifting frame is installed on the rotating frame so as to be movable up and down;

[0016] The compression device further comprises a first cylinder, wherein the first cylinder is mounted on the rotating frame and connected to the lifting frame.

[0017] Optionally, the lifting rod is movably and rotatably mounted on the lifting frame;

[0018] The compression device further comprises a second cylinder, the second cylinder being mounted on the lifting frame, and the output rod of the second cylinder being rotatably connected to the lifting rod;

[0019] The lifting frame is rotatably provided with a first gear, the second rotating device includes a second gear, the second rotating device is provided on the lifting frame, the first gear is meshed with the second gear; the lifting rod can move up and down through the center of the first gear, and the lifting rod and the first gear are arranged to rotate synchronously.

[0020] Optionally, a plurality of liquid-permeable holes are evenly distributed on the peripheral wall of the compression cylinder, and the inner edge of the lower end of the peripheral wall of the compression cylinder is chamfered at a right angle;

[0021] The height of the compression cylinder is lower than the height of the compression chamber;

[0022] The upper end of the compression cylinder is provided with an anti-detachment block which prevents the compression plate from detaching from the compression cylinder.

[0023] Optionally, the mounting frame is movably mounted on the vehicle body so that the compression device deviates from the compression device outlet in a horizontal direction.

[0024] Optionally, the potato harvesting device further comprises:

[0025] A guide plate is configured to move between the compression cylinder and the compression device outlet after the compression device is located at an upper side of the compression device outlet to guide soil dropped from the compression cylinder.

[0026] Optionally, the potato harvesting device further comprises:

[0027] A mud slide, wherein the mud slide is inclined, and the guide plate is telescopically mounted on the upper end of the mud slide;

[0028] A driving device is configured to drive the guide plate to slide between the compression cylinder and the compression device outlet to guide the soil dropped from the compression cylinder to the soil slide.

[0029] The present invention also provides a harvesting method for any of the above-mentioned potato harvesting devices, comprising:

[0030] Injecting a preset amount of cleaning liquid into the mud liquid receiving bucket and the clean liquid bucket through the outlet of the compression device;

[0031] digging by means of the digging device;

[0032] Cleaning potatoes by the cleaning device;

[0033] Obtaining a time interval for the compression device to work;

[0034] Based on the time interval, the lifting frame is controlled to descend to compress the soil in the compression chamber, and then the lifting frame is controlled to ascend to bring the compression cylinder out of the mud liquid receiving barrel through the compression device outlet, and the lifting rod is controlled to descend to squeeze the soil in the compression cylinder out of the compression cylinder.

[0035] Optionally, the time interval is a preset value; and the harvesting method further comprises:

[0036] The lifting frame is controlled to descend so that the compression cylinder is located in the mud and liquid receiving barrel and on the upper side of the compression chamber, thereby driving the compression cylinder to rotate to clean the compression cylinder and prevent the liquid permeable hole from being blocked.

[0037] In the potato harvesting device and harvesting method of the present invention, the recycling of the cleaning liquid is realized by the mud and liquid receiving barrel and the clean liquid barrel. As the mud in the mud and liquid receiving barrel increases, when the mud and liquid receiving barrel cannot receive the mud and liquid mixture, a large amount of cleaning liquid will flow onto the land along with the mud, causing the land to be slippery, affecting the advancement of the potato harvesting device, especially the land with uneven heights or large slopes such as hills. The embodiment of the present invention can compress and remove the mud in the mud and liquid receiving barrel to prevent the cleaning liquid from being unable to be recycled, and the soil removal will not take away a large amount of cleaning liquid. Moreover, if the cleaning liquid is not water, the recycling of the cleaning liquid prevents the cleaning liquid from polluting the soil on a large area. Of course, in order to prevent soil pollution, the receiving device can also be connected to recycle the compressed soil, and then return it to the land after treatment. That is to say, the potato harvesting device of the present invention can realize the cleaning of the soil on the potato, realize the cleaning of the potato, and can use various cleaning liquids, which will not cause the land to be slippery and affect the advancement of the vehicle body to prevent rollover accidents, etc., and can also prevent the cleaning liquid from polluting the soil as much as possible, and can protect the soil. If the cleaning fluid does not pollute the soil, the soil can be returned to the land at the same time, and a large amount of soil will not be taken away when the potatoes are taken away.

[0038] Based on the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will become more aware of the above and other objects, advantages and features of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:

[0040] Figure 1 is a schematic structural diagram of a potato harvesting device according to one embodiment of the present invention;

[0041] Figure 2 yes Figure 1 A schematic structural diagram of another perspective of the potato harvesting device shown;

[0042] Figure 3 yes Figure 1 A schematic structural diagram of a potato harvesting device from another perspective;

[0043] Figure 4 yes Figure 1 A schematic structural diagram of a potato harvesting device from another perspective;

[0044] Figure 5 is a schematic partial structural diagram of a potato harvesting device including a compression device and a mud liquid receiving bucket according to an embodiment of the present invention;

[0045] Figure 6 is another schematic partial structural diagram of a potato harvesting device including a compression device and a mud liquid receiving bucket according to an embodiment of the present invention;

[0046] Figure 7 yes Figure 6 a schematic cross-sectional view of the structure shown;

[0047] Figure 8 yes Figure 7 A schematic enlarged view of the middle A;

[0048] Fig. 9 is a schematic diagram of the working state of a potato harvesting device including a compression device and a mud receiving bucket according to an embodiment of the present invention;

[0049] Fig.10 is a schematic flow chart of a harvesting method of a potato harvesting device according to an embodiment of the present invention.

[0050] in:

[0051] 11. Car body; 12. Potato conveying device; 13. Cargo warehouse; 14. Excavating device; 15. Bucket; 16. Excavating motor; 17. Cleaning device; 18. Traction frame; 19. Mounting frame; 21. Pump; 22. Cleaning nozzle; 23. Liquid receiving tray; 24. First inclined section; 25. Second inclined section; 26. Horizontal section; 31. Mud and liquid receiving barrel; 32. Clean liquid barrel; 33. Compression device; 311. Compression chamber; 312. Liquid receiving chamber; 34. Inlet; 35. Compression device outlet; 36. Filter; 41. Compression cylinder; 42. Compression plate; 43. Lifting frame; 44. Lifting rod; 45. Anti-slip block; 46. Scraper; 50. Mud block; 51. Rotating frame; 52. Rotating motor; 53. Rotating gear; 54. First cylinder; 55. Second cylinder; 56. First fixed cylinder; 57. Second fixed cylinder. DETAILED DESCRIPTION

[0052] Refer to the following Figures 1 to 10 The potato harvesting device and the potato harvesting method according to the embodiments of the present invention are described.

[0053] Figure 1 Schematic diagram of a potato harvesting device according to an embodiment of the present invention. Figure 1 As shown, and refer to Figures 2 to 9The embodiment of the present invention provides a potato harvesting device, including a vehicle body 11, and an excavating device 14 and a potato conveying device 12 installed on the vehicle body 11. The vehicle body 11 is used to travel on fields such as hills and mountains. A traction frame 18 is provided on the vehicle body 11, which can move forward under the drive of the traction device. The excavating device 14 excavates potatoes in the field during the movement of the vehicle body 11, and the potato conveying device 12 is used to convey potatoes to the rear. For example, the potato harvesting device also includes a cargo bin 13, and the potato conveying device 12 is used to convey potatoes to the rear into the cargo bin 13. For example, the excavating device 14 includes a bucket 15 and an excavating motor 16 that drives the rear end of the bucket 15 to rotate. The front section of the bucket 15 tilts downward, the vehicle body 11 moves forward, and the potatoes are excavated, and then the front section of the bucket 15 is lifted, so that the excavated potatoes move to the potato conveying device 12.

[0054] In order to make the potatoes substantially free of soil, the potato conveying device 12 comprises a cleaning device 17. The cleaning device 17 is configured to clean the potatoes. The soil can be cleaned by the cleaning device 17. Usually, liquid medicine can be used for cleaning, and optionally, only water can be used for cleaning. The cleaning device 17 may comprise a pump 21, a cleaning nozzle 22, a transmission belt and a liquid receiving pan 23. The liquid receiving pan 23 is arranged on the lower side of the transmission belt, and the transmission belt has mesh holes. The pump 21 causes the cleaning liquid to flow to the potatoes on the transmission belt at a high speed to wash the potatoes. The washed mud liquid enters the liquid receiving pan 23 through the mesh holes.

[0055] Optionally, the potato conveying device 12 further comprises a potato-soil separation device. The potato-soil separation device is configured to separate the soil on the potatoes. Typically, the potato-soil separation device is a primary separation device, which may be a vibrating screen or the like. The cleaning device 17 may be configured to clean the potatoes separated by the potato-soil separation device.

[0056] Furthermore, the potato conveying device 12 further comprises a mud liquid receiving bucket 31, a clean liquid bucket 32 ​​and a compression device 33. Figures 5 to 9As shown, the mud liquid receiving barrel 31 has a compression chamber 311 and a liquid receiving chamber 312 arranged from bottom to top in sequence. The compression chamber 311 is cylindrical, and the cross-sectional area of ​​the liquid receiving chamber 312 is larger than the area of ​​the compression chamber 311. The liquid receiving chamber 312 is provided with an inlet 34, a compression device outlet 35 and a clean liquid outlet, and a filter screen 36 is provided at the clean liquid outlet. The inlet receives the mud liquid cleaned by the cleaning device 17; the compression device outlet 35 is coaxially arranged with the compression chamber 311. The clean liquid barrel 32 is connected to the clean liquid outlet, and the clean liquid barrel 32 is configured to provide cleaning liquid for the cleaning device 17. The compression device 33 includes a compression cylinder 41, a compression plate 42, a lifting frame 43 and a lifting rod 44. The compression cylinder 41 is connected to the lifting frame 43, and is configured to enter the compression chamber 311 through the compression device outlet 35 under the drive of the lifting frame 43. The compression plate 42 is arranged in the compression cylinder 41, and a liquid outlet perforation is arranged on the compression plate 42; the compression plate 42 is connected to the lifting rod 44. The outlet of the clean liquid barrel 32 is connected to the inlet of the pump 21. The lifting rod 44 is installed on the lifting frame 43 so as to be movable up and down. The upper end of the compression cylinder 41 is open, and the upper end of the compression cylinder 41 is provided with an anti-dropping block 45 which limits the compression plate 42 to move upward to the highest position relative to the compression cylinder 41.

[0057] When the potato harvesting device of the embodiment of the present invention is working, the excavating device 14 is used to excavate potatoes and transfer the potatoes to the potato conveying device 12. Then the vibrating screen is vibrated to initially separate the potatoes and the soil, and then the potatoes are moved to the transmission belt. The pump 21 causes the cleaning liquid to flow to the potatoes on the transmission belt at a high speed to wash the potatoes. The washed mud enters the liquid receiving tray 23 through the mesh. The mud on the liquid receiving tray 23 enters the mud receiving barrel 31 through the inlet on the liquid receiving chamber 312. A mud pipe extending into the liquid receiving chamber 312 is provided at the inlet to prevent the mud from affecting the clean liquid flowing out of the clean liquid outlet. The mud is filtered through the clean liquid outlet and enters the clean liquid barrel 32, and then enters the pump 21 for recycling.

[0058] In the initial position, the compression cylinder 41 is at the compression device outlet 35, blocking the compression device outlet 35, and the compression plate 42 has a liquid outlet perforation to ensure the air permeability of the mud and liquid receiving barrel 31. As the cleaning proceeds, the mud in the mud and liquid receiving barrel 31 becomes more and more, and the mud in the mud and liquid receiving barrel 31 needs to be cleaned. At this time, the lifting frame 43 drives the compression cylinder 41 to descend. During the descent process, the compression plate 42 descends with the compression cylinder 41, squeezing the mud in the compression chamber 311. When the mud is compressed, the liquid in the mud flows out of the compression cylinder 41 through the liquid outlet perforation. When there is less mud, the compression plate 42 can be lowered alone after the compression cylinder 41 stops falling. As the compression plate 42 gradually descends, the mud is compressed into a cake shape, that is, a mud block 50 is formed. When there is more mud, the compression of the mud can be achieved without the compression plate 42 descending alone.

[0059] After the soil is compressed, the compression cylinder 41 is lifted and moved to the outside of the mud and liquid receiving barrel 31 through the compression device outlet 35. Then, the compression plate 42 is lowered relative to the compression cylinder 41 to squeeze out the soil in the compression cylinder 41, thereby cleaning the soil in the compression cylinder 41. At this time, there is basically no cleaning liquid in the soil.

[0060] In the embodiment of the present invention, the recycling of the cleaning liquid is achieved through the mud and liquid receiving barrel 31 and the clean liquid barrel 32. As the mud in the mud and liquid receiving barrel 31 increases, when the mud and liquid receiving barrel 31 cannot receive the mud and liquid mixture, a large amount of cleaning liquid will flow onto the land along with the mud, causing the land to be slippery and affecting the advancement of the potato harvester, especially the land with uneven terrain or large slopes such as hills. The embodiment of the present invention can compress and remove the soil in the mud and liquid receiving barrel 31 to prevent the cleaning liquid from being unable to be recycled, and the soil removal will not take away a large amount of cleaning liquid. Moreover, if the cleaning liquid is not water, the recycling of the cleaning liquid prevents the cleaning liquid from polluting the soil on a large scale. Of course, in order to prevent soil pollution, the receiving device can also be connected to recycle the compressed soil and return it to the land after treatment. That is to say, the potato harvester of the present invention can realize the cleaning of the soil on the potatoes, realize the cleaning of the potatoes, and can use various cleaning liquids, which will not cause the land to be slippery and affect the advancement of the vehicle body 11 to prevent rollover accidents, etc., and can also prevent the cleaning liquid from polluting the soil as much as possible, and can protect the soil. If the cleaning fluid does not pollute the soil, the soil can be returned to the land at the same time, and a large amount of soil will not be taken away when the potatoes are taken away.

[0061] In some embodiments of the present invention, in order to ensure that the soil can be taken away after compression and to clean the soil in the compression cylinder 41, the potato harvesting device further includes a rotating device and a scraper 46. The scraper 46 is horizontally arranged at the lower end of the compression cylinder 41, and the upper edge and the lower edge of each scraper 46 are scraping blades. The scraping blade at the lower edge can scrape the soil on the bottom surface of the compression chamber 311, so that the soil in the compression cylinder 41 is separated from the compression chamber 311. The scraping blade at the upper edge can scrape the soil on the lower surface of the compression plate 42 to prevent the soil in the compression cylinder 41 from adhering to the compression plate 42 after the compression cylinder 41 is removed, that is, to prevent the soil from falling from the compression plate 42. Even if the soil in the compression cylinder 41 falls off the compression plate 42 due to the soil's own gravity after being moved out of the compression cylinder 41, there will inevitably be some soil on the compression plate 42. The scraper blade on the upper edge can also scrape the soil on the lower surface of the compression plate 42 to prevent the compression plate 42 from having any soil.

[0062] The rotating device is configured to drive the compression cylinder and the compression plate to rotate synchronously or to make the compression cylinder and the compression plate rotate relative to each other. For example, the rotating device includes a first rotating device and a second rotating device. The first rotating device is configured to drive the compression device 33 to rotate. The second rotating device is configured to drive the lifting rod 44 and the compression plate 42 to rotate. When the soil is compressed, the compression device 33 rotates, that is, the compression cylinder 41 rotates, and the scraping blade at the lower edge can scrape the soil on the bottom surface of the compression chamber 311, so that the soil in the compression cylinder 41 is separated from the compression chamber 311. When the soil in the compression cylinder 41 needs to be pushed out of the compression cylinder 41, the compression plate 42 moves downward to a position in contact with the scraping blade at the upper edge. The compression plate 42 rotates relative to the scraping blade, so that the soil in the compression cylinder 41 will not fall off the compression plate 42 and will not stick to the compression plate 42.

[0063] In some embodiments of the present invention, the transmission belt includes a first inclined section 24, a second inclined section 25 and a horizontal section 26 disposed on the upper side of the liquid receiving tray, and the first inclined section 24, the second inclined section 25 and the horizontal section 26 are sequentially disposed along the moving direction of the potatoes. The first inclined section and the second inclined section form a concave cleaning space, and the horizontal section is connected to the second inclined section, and the horizontal section allows the washed potatoes to have enough time for water to drip.

[0064] In some embodiments of the present invention, Figures 5 to 9 As shown, a mounting frame 19 is provided on the vehicle body 11. The first rotating device includes a rotating frame 51, which is rotatably mounted on the mounting frame 19. The lifting frame 43 is mounted on the rotating frame 51 so as to be movable up and down. The compression device 33 also includes a first cylinder 54, which is mounted on the rotating frame 51, and the first cylinder 54 is connected to the lifting frame 43. In the embodiment of the present invention, the lifting frame 43 is driven to be lifted and lowered by the first cylinder 54, and the first rotating device may also include a driving device provided on the mounting frame 19, the driving device drives the rotating frame 51 to rotate, and the rotating frame 51 drives the first cylinder 54, the lifting frame 43 and the compression cylinder 41 to rotate. Further, the driving device includes a rotating motor 52 and a rotating gear 53; the rotating gear 53 is mounted on the output shaft of the rotating motor 52, and the teeth on the rotating gear 53 and the rotating frame 51 are meshed with each other.

[0065] In some embodiments of the present invention, the lifting rod 44 is installed on the lifting frame 43 so as to be movable up and down and rotatable. The compression device 33 further includes a second cylinder 55, which is installed on the lifting frame 43, and the output rod of the second cylinder 55 is rotatably connected to the lifting rod 44. A first gear is rotatably arranged on the lifting frame 43, and the second rotating device includes a motor and a second gear, which is arranged on the lifting frame 43, and the second gear is arranged on the output shaft of the motor. The first gear and the second gear are meshed. The lifting rod 44 can move up and down through the center of the first gear, and the lifting rod 44 and the first gear are arranged to rotate synchronously, for example, the cross section of the lifting rod 44 is a polygon, the center of the first gear is a polygon, or a transmission key that allows relative movement is arranged between the lifting rod 44 and the first gear. The second cylinder 55 drives the lifting rod 44 to move up and down, and the lifting rod 44 drives the compression plate 42 to descend, the motor drives the first gear to rotate through the second gear, and the first gear drives the lifting rod 44 and the compression plate 42 to rotate.

[0066] In some alternative embodiments of the present invention, the rotating frame 51 is rotatably provided with a rotating drum, and the lifting rod 44 is installed in the rotating drum so as to be movable up and down, and rotates synchronously with the rotating drum. The lifting rod 44 is rotatably and movable up and down on the lifting frame 43. The second rotating device is installed on the rotating frame 51, and is configured to drive the rotating drum to rotate. The second cylinder 55 is installed on the rotating frame 51, and the output rod of the second cylinder 55 is rotatably connected to the lifting rod 44. In this embodiment, the device for driving the lifting frame 43 to rise and fall, the device for driving the lifting rod 44 to rise and fall, and the device for driving the lifting rod 44 to rotate are all installed on the rotating frame 51, reducing the burden on the lifting frame 43. In this embodiment, if the lifting drum and the compression plate 42 are lifted and lowered synchronously, the first cylinder 54 and the second cylinder 55 need to work synchronously.

[0067] In some alternative embodiments of the present invention, Figures 5 to 9 As shown, the first cylinder 54 is mounted on the mounting frame 19, and the first cylinder 54 is rotatably connected to the lifting frame 43. The first cylinder 54 is used to drive the lifting frame 43 to move up and down. The lifting rod 44 is rotatably mounted on the lifting frame 43. In some alternative embodiments of the present invention, the second cylinder 55 is mounted on the mounting frame 19, and the output rod of the second cylinder 55 is rotatably connected to the lifting rod 44.

[0068] In some embodiments of the present invention, Figure 7 and Figure 8 As shown, the first cylinder 54 and the second cylinder 55 are coaxially arranged, and the first cylinder 54 may have multiple output shafts, which are evenly distributed along the circumference of the output shaft of the second cylinder 55. When the first cylinder 54 and the second cylinder 55 are simultaneously mounted on the mounting frame 19, or when they are simultaneously mounted on the rotating frame 51, it is convenient for the reasonable arrangement of the various components.

[0069] In some embodiments of the present invention, Figure 8 As shown, only the first rotating device is provided, and the second rotating device is not provided. A first fixed cylinder 56 is fixedly provided on the mounting frame 19, and a second fixed cylinder is provided on the lifting frame 43. The lifting rod 44 passes through the first fixed cylinder 56 and the second fixed cylinder 57. The inner contour of the cross section of the first fixed cylinder 56 is a polygon, and the inner contour of the cross section of the second fixed cylinder 57 is a polygon. The lifting rod 44 includes a first section, a second section, a third section and a fourth section. When the compression cylinder 41 is in the compression chamber 311 and contacts the bottom of the compression chamber 311, the first section is in the first fixed cylinder 56, and the first section is relatively rotatably connected to the first fixed cylinder 56, and the cross-sectional profile of the first section can be circular. The second section is in the second fixed cylinder 57, and the cross-sectional profile of the second section is a polygon. The second section is synchronously rotatably connected to the second fixed cylinder 57. When the first rotating device drives the rotating frame 51 to rotate, the rotating frame 51, the lifting frame 43, the compression cylinder 41, the lifting rod 44 and the compression plate 42 rotate synchronously. When the compression cylinder 41 is in the position to push out the mud block 50 and the compression plate 42 is at the lower end of the compression cylinder 41, the fourth section is in the second fixed cylinder 57, and the fourth section is relatively rotatably connected to the second fixed cylinder 57, and the cross-sectional profile of the fourth section can be circular. The third section is in the first fixed cylinder 56, and the cross-sectional profile of the third section is polygonal, and the third section is synchronously rotatably connected to the first fixed cylinder 56. When the first rotating device drives the rotating frame 51 to rotate, the rotating frame 51, the lifting frame 43, and the compression cylinder 41 rotate synchronously. Since the first fixed cylinder 56 is stationary, the lifting rod 44 and the compression plate 42 do not rotate. At this time, the relative rotation between the compression plate 42 and the compression cylinder 41 is realized, and the second rotating device is not required, and the structure is simpler.

[0070] In some embodiments of the present invention, a pressure sensor is provided on the compression plate 42, and the degree of compression of the soil can be determined based on the pressure of the soil on the lower surface of the compression plate 42 detected by the pressure sensor. When the pressure value detected by the pressure sensor reaches a preset value, it indicates that the liquid in the soil is basically compressed out, and the soil can be taken away after being compressed.

[0071] In some embodiments of the present invention, due to the presence of a pressure sensor, the second cylinder 55 may not be provided, and a stop block is provided on the rotating frame 51 or the mounting frame 19 .

[0072] When the compression cylinder 41 descends, the anti-slip block 45 on the compression cylinder 41 drives the compression plate 42 to descend, and the compression plate 42 drives the lifting rod 44 to rise and fall. When compressing soil, when the amount of soil is relatively small, multiple compressions are required to lift the compression cylinder 41 to the upper side of the compression chamber 311 in the liquid receiving chamber 312, so that the soil in the liquid receiving chamber 312 enters the compression chamber 311, and then compress until the amount of soil is sufficient, that is, the compressed soil will fill the entire compression cylinder 41, and the pressure value of the pressure sensor reaches the preset value. The scheme of setting the second cylinder 55, because the second cylinder 55 can actively perform compression, there is no requirement for the amount of soil entering the mud liquid receiving barrel 31.

[0073] When the soil in the compression cylinder 41 needs to be discharged, the first cylinder 54 drives the compression cylinder 41 to rise, and the soil in the compression cylinder 41 drives the compression plate 42 and the lifting rod 44 to rise. When the compression cylinder 41 rises to a preset position, the upper end of the lifting rod 44 contacts the stop block, preventing the lifting rod 44 from rising. The first cylinder 54 continues to drive the compression cylinder 41 to rise, and the compression cylinder 41 rises relative to the compression plate 42, which causes the soil in the compression cylinder 41 to flow out of the compression cylinder 41.

[0074] In some embodiments of the present invention, a plurality of liquid permeable holes are evenly distributed on the peripheral wall of the compression cylinder 41, and the inner edge of the lower end of the peripheral wall of the compression cylinder 41 is set at a right angle. The plurality of liquid permeable holes are set so that after the soil is compressed, the liquid on the upper side of the compression plate 42 is discharged to the mud liquid receiving barrel 31 during the rising process of the compression cylinder 41, and will not be carried to the outside of the mud liquid receiving barrel 31. The height of the compression cylinder 41 is lower than the height of the compression chamber 311, so that there is enough soil in the compression cylinder 41 to be compressed.

[0075] In some embodiments of the present invention, Figure 5 As shown, in order to prevent the soil in the compression cylinder 41 from entering the mud liquid receiving barrel 31 again through the compression device outlet 35 after being pushed out, the mounting frame 19 is movably mounted on the vehicle body 11 so that the compression device 33 deviates from the compression device outlet 35 in the horizontal direction. The mounting frame 19 may be connected to a driving device, which drives the mounting frame 19 to move on the slide rail so that the compression cylinder 41 deviates from the compression device outlet 35 in the horizontal direction, so that the soil in the compression cylinder 41 moves to the ground after being pushed out, or moves to the upper side of the receiving port of the receiving device for receiving and storing the soil, so that the soil falls into the receiving device.

[0076] In some embodiments of the present invention, the potato harvesting device further includes a guide plate, which is configured to move between the compression cylinder 41 and the compression device outlet 35 after the compression device 33 is located on the upper side of the compression device outlet 35, so as to guide the soil falling from the compression cylinder 41. By providing the guide plate, the soil in the compression cylinder 41 is prevented from being pushed out and then entering the mud liquid receiving barrel 31 again through the compression device outlet 35.

[0077] Furthermore, the potato harvesting device further comprises a soil chute and a driving device. The soil chute is inclined, and the guide plate is telescopically mounted on the upper end of the soil chute. The driving device is configured to drive the guide plate to slide between the compression cylinder 41 and the compression device outlet 35, so as to guide the soil falling from the compression cylinder 41 to the soil chute. The lower end of the soil chute can be connected to a receiving device, and the soil can also be guided to the land. The soil chute facilitates the reasonable setting of the device and has a compact structure.

[0078] In some embodiments of the present invention, in order to reduce the number of devices and facilitate control, a linkage device is provided between the lifting frame 43 and the guide plate. The linkage device is configured to start when the compression cylinder 41 is separated from the compression device outlet 35 and rises to a preset height, so that the guide plate slides outward to the compression cylinder 41 and the compression device outlet 35 as the compression cylinder 41 rises. Specifically, the linkage device includes a first rack, a second rack, and a belt transmission mechanism; the first rack is mounted on the lifting frame 43, and the second rack is mounted on the guide plate. The two pulleys of the belt transmission mechanism are respectively mounted on the mounting frame 19 and the soil slideway, and the two pulleys of the belt transmission mechanism are provided with teeth, which are respectively engaged with the first rack and the second rack. In the process of the compression cylinder 41 moving upward, the first rack first engages with the corresponding pulley and then disengages, so that when the compression cylinder 41 is at the highest position and rotates, the corresponding pulley has no stopping effect on the first rack. If the compression cylinder 41 is at the highest position and does not need to rotate, the first rack can be engaged with the corresponding pulley. Similarly, during the downward movement of the compression cylinder 41, the first rack also has to disengage from the corresponding pulley before the compression cylinder 41 enters the compression device outlet 35. In this way, when the compression cylinder 41 is at the lowest position and rotates, the corresponding pulley has no stopping effect on the first rack.

[0079] Fig.10 FIG. 1 is a schematic flow chart of a harvesting method of a potato harvesting device according to an embodiment of the present invention. Fig.10 As shown, an embodiment of the present invention further provides a harvesting method for a potato harvesting device in any of the above embodiments, which comprises:

[0080] Step S110, a preset amount of cleaning liquid is injected into the mud liquid receiving barrel 31 and the clean liquid barrel 32 through the compression device outlet 35. The compression device outlet 35 also has the function of injecting cleaning liquid. The mud liquid receiving barrel 31 and the clean liquid barrel 32 are both provided with a discharge port. After the harvesting operation is completed, the cleaning liquid in the mud liquid receiving barrel 31 and the clean liquid barrel 32 can be discharged to reduce the weight of the potato harvesting device.

[0081] Step S120, digging is performed by the digging device 14, and the soil on the potatoes is separated by the potato-soil separation device. The potatoes separated by the potato-soil separation device are cleaned by the cleaning device 17.

[0082] Step S130, obtaining the working time interval of the compression device 33.

[0083] Step S140, based on the time interval, the lifting frame 43 is controlled to descend to compress the soil in the compression chamber 311, and then the lifting frame 43 is controlled to rise to bring the compression cylinder 41 out of the mud liquid receiving barrel 31 through the compression device outlet 35, and the lifting rod 44 is controlled to descend to squeeze the soil in the compression cylinder 41 out of the compression cylinder 41.

[0084] In the embodiment of the present invention, the soil in the mud and liquid receiving barrel 31 can be collected and discharged in a timely and effective manner to prevent the mud and liquid receiving barrel 31 from being unable to receive the mud and liquid mixture, and a large amount of cleaning liquid will flow onto the land along with the soil, causing the land to be slippery and affecting the movement of the potato harvesting device, especially on hilly or steeply sloped lands, and the cleaning liquid can be prevented from contaminating the soil as much as possible.

[0085] In some embodiments of the present invention, the above-mentioned harvesting method also includes controlling the lifting frame 43 to descend so that the compression cylinder 41 is located in the mud and liquid receiving barrel 31 and is on the upper side of the compression chamber 311, thereby driving the compression cylinder 41 to rotate to clean the compression cylinder 41 and prevent the liquid permeable hole from being blocked.

[0086] In some preferred embodiments of the present invention, in order to improve the working efficiency of the potato harvesting device and adapt to different harvesting scenarios, the time interval for the compression device 33 to work is obtained for different soil carrying amounts, including:

[0087] The timing starts when the cleaning device 17 starts to work.

[0088] The lifting frame 43 is controlled to descend at preset intervals to compress the soil in the compression chamber 311. After the compression cylinder 41 moves to the lowest position, the lifting frame 43 is controlled to rise until the compression cylinder 41 is separated from the compression chamber 311 and is located in the mud liquid receiving barrel 31.

[0089] At the same time, after the compression cylinder 41 moves to the lowest position, the pressure exerted on the compression plate 42 is obtained.

[0090] After the pressure on the compression plate 42 reaches a preset value, the timing is stopped.

[0091] Determine the time interval for recording.

[0092] In the embodiment of the present invention, a reasonable time interval is determined according to the specific situation to ensure that the maximum amount of soil is compressed each time, thereby improving the soil processing efficiency. Compared with a fixed time interval, there will not be too much soil compressed, or too little soil, which will affect the compression efficiency.

[0093] Of course, in some alternative embodiments of the present invention, the time interval is a preset value. The preset value can also be set by the user before each operation to adapt to different harvesting scenarios.

[0094] At this point, those skilled in the art should recognize that, although multiple exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications that conform to the principles of the present invention can still be directly determined or derived based on the content disclosed in the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and recognized as covering all these other variations or modifications.

Claims

1. A potato harvesting device, comprising a vehicle body, and a digging device and a potato conveying device mounted on the vehicle body, characterized in that: The potato conveying device comprises: a cleaning device, the cleaning device being configured to clean potatoes; A mud and liquid receiving barrel, wherein the mud and liquid receiving barrel has a compression chamber and a liquid receiving chamber arranged in sequence from bottom to top; the compression chamber is cylindrical, and the cross-sectional area of ​​the liquid receiving chamber is larger than the area of ​​the compression chamber; the liquid receiving chamber is provided with an inlet, a compression device outlet and a clean liquid outlet, and a filter is provided at the clean liquid outlet; the inlet receives the mud and liquid cleaned by the cleaning device; the compression device outlet is coaxially arranged with the compression chamber; a cleaning liquid barrel, the cleaning liquid barrel being connected to the cleaning liquid outlet and configured to provide cleaning liquid to the cleaning device; A compression device, the compression device comprising a compression cylinder, a compression plate, a lifting frame and a lifting rod; the compression cylinder is connected to the lifting frame and is configured to enter the compression chamber through the compression device outlet under the drive of the lifting frame; the compression plate is arranged in the compression cylinder, and a liquid outlet through hole is arranged on the compression plate; the compression plate is connected to the lifting rod; A rotating device, wherein the rotating device is configured to drive the compression cylinder and the compression plate to rotate synchronously or to make the compression cylinder and the compression plate rotate relative to each other; The scraper is horizontally arranged at the lower end of the compression cylinder, and the upper edge and the lower edge of each scraper are scraping edges.

2. The potato harvesting device according to claim 1, characterized in that: The vehicle body is provided with a mounting frame; the rotating device comprises a first rotating device, and the first rotating device is configured to drive the compression device to rotate; The first rotating device comprises a rotating frame, and the rotating frame is rotatably mounted on the mounting frame; The lifting frame is installed on the rotating frame so as to be movable up and down, and rotates with the rotating frame; the lifting rod is installed on the lifting frame so as to be movable up and down and rotatable; The compression device also includes a first cylinder and a second cylinder, the first cylinder is installed on the rotating frame, the first cylinder is connected to the lifting frame, the second cylinder is installed on the lifting frame, and the output rod of the second cylinder is rotatably connected to the lifting rod.

3. The potato harvesting device according to claim 2, characterized in that: A mounting frame is provided on the vehicle body; The first rotating device comprises a rotating frame, and the rotating frame is rotatably mounted on the mounting frame; The lifting frame is installed on the rotating frame so as to be movable up and down, and rotates with the rotating frame; the lifting rod is installed on the lifting frame so as to be movable up and down and rotatable; The compression device also includes a first cylinder and a second cylinder. The first cylinder is mounted on the mounting frame. The output rod of the first cylinder is rotatably connected to the lifting frame. The output rod of the second cylinder is rotatably connected to the lifting rod.

4. The potato harvesting device according to claim 3, characterized in that: The rotating device further comprises a second rotating device, wherein the second rotating device is configured to drive the lifting rod and the compression plate to rotate relative to the compression cylinder; The lifting frame is rotatably provided with a first gear, the second rotating device includes a second gear, the second rotating device is provided on the lifting frame, the first gear is meshed with the second gear; the lifting rod can move up and down through the center of the first gear, and the lifting rod and the first gear are arranged to rotate synchronously.

5. The potato harvesting device according to claim 3, characterized in that: The mounting frame is fixedly provided with a first fixed cylinder, the lifting frame is provided with a second fixed cylinder, the lifting rod passes through the first fixed cylinder and the second fixed cylinder, and the lifting rod includes a first section, a second section, a third section and a fourth section; When the compression cylinder is in the compression chamber and in contact with the bottom of the compression chamber, the first section is in the first fixed cylinder, and the first section and the first fixed cylinder are rotatably arranged relative to each other; the second section is in the second fixed cylinder, and the second section and the second fixed cylinder are rotatably arranged synchronously; When the compression cylinder is in a position to push out the mud block and the compression plate is at the lower end of the compression cylinder, the fourth section is in the second fixed cylinder, and the fourth section and the second fixed cylinder are rotatable relative to each other; the third section is in the first fixed cylinder, and the third section and the first fixed cylinder are rotatably arranged synchronously.

6. The potato harvesting device according to claim 3, characterized in that: The mounting frame is movably mounted on the vehicle body so that the compression device is deviated from the compression device outlet in the horizontal direction; A plurality of liquid permeable holes are evenly distributed on the peripheral wall of the compression cylinder, and the inner edge of the lower end of the peripheral wall of the compression cylinder is chamfered at a right angle; The height of the compression cylinder is lower than the height of the compression chamber; The upper end of the compression cylinder is provided with an anti-detachment block which prevents the compression plate from detaching from the compression cylinder.

7. The potato harvesting device according to claim 1, characterized in that: Also includes: a guide plate configured to move between the compression cylinder and the compression device outlet after the compression device is located at an upper side of the compression device outlet to guide the soil falling from the compression cylinder; The mud slide is arranged obliquely, and the guide plate is telescopically mounted on the upper end of the mud slide.

8. A harvesting method for a potato harvesting device according to any one of claims 1 to 7, characterized in that: include: Injecting a preset amount of cleaning liquid into the mud liquid receiving bucket and the clean liquid bucket through the outlet of the compression device; digging by means of the digging device; The potatoes are cleaned by the cleaning device; Obtaining a time interval for the compression device to work; Based on the time interval, the lifting frame is controlled to descend to compress the soil in the compression chamber, and then the lifting frame is controlled to ascend to bring the compression cylinder out of the mud liquid receiving barrel through the compression device outlet, and the lifting rod is controlled to descend to squeeze the soil in the compression cylinder out of the compression cylinder.

9. The harvesting method of potato harvesting device according to claim 8, characterized in that: The time interval is a preset value; the harvesting method also includes: The lifting frame is controlled to descend so that the compression cylinder is located in the mud and liquid receiving barrel and on the upper side of the compression chamber, thereby driving the compression cylinder to rotate to clean the compression cylinder and prevent the liquid permeable hole from being blocked.

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