An automatic crop harvesting device

Abstract

The application discloses a kind of automatic harvesting device of crop, it is related to agricultural technology field, including traction frame and being set on the first conveying mechanism and second conveying mechanism of traction frame, the first conveying mechanism includes sprocket and the conveying frame connected with sprocket;The push plate is slidably arranged on the conveying frame, and the overlap plate is arranged between the first conveying mechanism and the second conveying mechanism, and the push plate has the first state for pushing potato and the second state for avoiding the overlap plate.This application provides an automatic harvesting device of crop, when transporting potato, push plate is in the first state, by the pushing effect of push plate, potato can be lifted, in the process of transferring potato from the first conveying mechanism to the second conveying mechanism, potato will be transported to the overlap plate, and roll along the surface of overlap plate to the second conveying mechanism, to avoid the broken skin condition of potato in the process of transfer as far as possible.

Description

Technical Field

[0001] This invention relates to the field of agricultural technology, and more specifically to an automatic crop harvesting device. Background Technology

[0002] As is widely known, the potato is a common crop, also called yam, ground potato, etc. It is a widely cultivated tuber crop belonging to the Solanaceae family and the Solanum genus. After potatoes mature, they are usually harvested manually or by mechanization.

[0003] For example, the Chinese patent document with authorization announcement number CN206895217U, announcement date of 2018-01-19, and titled "Combined Operation Machine for Potato Harvesting and Residual Film Recycling," employs a novel mechanism: a two-stage conveying system. Potatoes move in the lower layer of the first-stage conveying and shaking mechanism, while straw and plastic film move in the upper layer. After passing through the shaking mechanism, the potatoes fall after the first-stage conveying, while the straw and plastic film move upwards along the second-stage conveying mechanism. The plastic film is collected by a film-rolling and collecting device, while the straw is thrown back into the field. Because the straw lands behind the potatoes, it avoids burying the straw underground, thus preventing interference with potato harvesting. Simultaneously, separating the mixture of plastic film, straw, and potatoes facilitates better separation of potatoes from the soil by the conveying and shaking device and the recycling of residual film. This utility model is of moderate size, lightweight, and features a simple and ingenious grading structure, offering convenience, flexibility, and improved work efficiency.

[0004] The shortcomings of the existing technology mentioned above are that when harvesting potatoes by mechanization, the potatoes and soil are transported together to the first conveyor and then to the second conveyor. During the transfer, because the connection between the first and second conveyors is relatively high, the potatoes on the first conveyor may fall directly onto the second conveyor, which can easily cause the potatoes to break and thus affect the quality of the harvest. Summary of the Invention

[0005] The purpose of this invention is to provide an automatic crop harvesting device to overcome the aforementioned shortcomings of the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] An automatic crop harvesting device includes a traction frame and a first conveying mechanism and a second conveying mechanism disposed on the traction frame. The first conveying mechanism is used to separate soil from potatoes during the transfer of potatoes. The first conveying mechanism includes a sprocket and a conveying frame connected to the sprocket.

[0008] A pusher plate is slidably mounted on the conveyor frame, and an overlap plate is provided between the first conveyor mechanism and the second conveyor mechanism. The pusher plate has a first state for pushing potatoes and a second state for avoiding the overlap plate.

[0009] The above-mentioned automatic crop harvesting device includes a conveyor frame comprising a transmission belt and a first crossbar disposed on the transmission belt. The first crossbar has a through hole, and the push plate is slidably connected to the through hole.

[0010] In the above-mentioned automatic crop harvesting device, the traction frame is provided with a drive groove, the push plate is provided with a slider, and the slider is slidably connected to the drive groove.

[0011] The aforementioned automatic crop harvesting device includes a clearing mechanism on the push plate for clearing blockages in potatoes on the conveyor frame.

[0012] The above-mentioned automatic crop harvesting device includes a blockage clearing mechanism comprising a rotating frame rotatably mounted on the push plate, and a blockage clearing rod rotatably mounted on the rotating frame.

[0013] The aforementioned automatic crop harvesting device includes a rotating frame comprising a first section and a second section that slide together, with a spring provided between the first section and the second section.

[0014] The aforementioned automatic crop harvesting device further includes an abutment rod, which is fixed to the first crossbar and located on the travel stroke of the rotating frame.

[0015] In the above-mentioned automatic crop harvesting device, the width of the rotating frame is adapted to the width of the through hole.

[0016] The aforementioned automatic crop harvesting device further includes a second crossbar, on which a spreading component for spreading potatoes is provided.

[0017] The above-mentioned automatic crop harvesting device includes a spreading assembly comprising a plurality of levers rotatably mounted on a second crossbar, wherein a first torsion spring is provided between the levers and the second crossbar, a top rod is slidably mounted on the second crossbar, the levers are located on the travel stroke of the top rod, and a power assembly for driving the levers to slide.

[0018] In the above technical solution, the present invention provides an automatic crop harvesting device, which adds an overlapping plate between the first conveying mechanism and the second conveying mechanism. The overlapping plate is arranged at an angle. When transporting potatoes, the push plate is in the first state. Through the pushing action of the push plate, the potatoes can be lifted. During the process of transferring the potatoes from the first conveying mechanism to the second conveying mechanism, the potatoes will be transported to the overlapping plate and roll down the surface of the overlapping plate onto the second conveying mechanism, so as to minimize the damage to the potatoes during the transfer process.

[0019] Furthermore, during the transfer process, when the pusher plate is about to move to the position of the overlap plate, the pusher plate can be controlled to retract inward to switch to the second state, thereby avoiding interference between the pusher plate and the overlap plate. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0021] Figure 1 This is a schematic diagram of the overall structure provided for an embodiment of the present invention;

[0022] Figure 2 This is a side view structural diagram provided in an embodiment of the present invention;

[0023] Figure 3 This is a partial structural schematic diagram provided for another embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of a traction frame structure provided in another embodiment of the present invention;

[0025] Figure 5 This is a cross-sectional view of a conveyor frame provided in another embodiment of the present invention;

[0026] Figure 6 This is a schematic diagram of the connection structure between the push plate and the first crossbar provided in another embodiment of the present invention;

[0027] Figure 7 This is a schematic diagram of the unblocking rod rotation process provided in another embodiment of the present invention;

[0028] Figure 8 This is a schematic diagram of the overall structure of the first crossbar and the second crossbar according to another embodiment of the present invention;

[0029] Figure 9 This is a cross-sectional structural schematic diagram provided for another embodiment of the present invention;

[0030] Figure 10 This is a cross-sectional structural schematic diagram from another perspective provided in yet another embodiment of the present invention;

[0031] Figure 11 This is a schematic diagram of the connection structure between the transmission component and the transmission rod provided in another embodiment of the present invention;

[0032] Figure 12 This is a schematic diagram of the unfolded lever structure provided in another embodiment of the present invention;

[0033] Figure 13 This is a schematic diagram of the structure in which the lever is housed inside the slot, according to another embodiment of the present invention.

[0034] Explanation of reference numerals in the attached figures:

[0035] 1. Traction frame; 2. First conveying mechanism; 3. Second conveying mechanism; 4. Conveying frame; 5. Push plate; 6. Overlap plate; 7. Transmission belt; 8. First crossbar; 9. Through hole; 10. Transmission shaft; 11. Transmission wheel; 12. Mounting slot; 13. Drive slot; 1301. Pushing section; 1302. Switching section; 1303. Avoidance section; 14. Sliding block; 15. Rotating frame; 1501. First section; 1502. Second section; 16. Clearing rod; 17. Storage slot; 18. Spring; 19. Abutment rod; 20. Second crossbar; 21. Toggle rod; 22. Top rod; 23. Strip groove; 24. Transmission component; 25. Notch; 26. Transmission rod; 2601. First part; 2602. Second part. Detailed Implementation

[0036] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0037] In the description of this invention, it should be understood that... Figure 9 The position of the first horizontal bar 8 relative to the abutment bar 19 is upper, and vice versa. Figure 9 The rotation direction of the central rotating frame 15 toward the first crossbar 8 is counterclockwise, and vice versa. The terms "center", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0038] Reference Figure 1-13An automatic crop harvesting device provided in this embodiment of the invention includes a traction frame 1 and a first conveying mechanism 2 and a second conveying mechanism 3 disposed on the traction frame 1. The first conveying mechanism 2 is used to separate soil from potatoes during the transfer of potatoes. The first conveying mechanism 2 includes a sprocket (not shown) and a conveying frame 4 connected to the sprocket. A push plate 5 is slidably disposed on the conveying frame 4. An overlapping plate 6 is disposed between the first conveying mechanism 2 and the second conveying mechanism 3. The push plate 5 has a first state for pushing potatoes and a second state for avoiding the overlapping plate 6.

[0039] Specifically, the towing frame 1 is equipped with wheels that connect to the towing vehicle and allow it to move behind the vehicle. The towing frame 1 also has a shovel-like part. The first conveying mechanism 2 can be a conveyor belt structure with holes on its surface for soil to fall through. The push plate 5 is a rectangular plate that protrudes from the surface of the first conveying mechanism 2. The towing frame 1 is also equipped with a cleaning mechanism such as a brush. When harvesting potatoes, the shovel-like part is inserted into the soil. As the towing vehicle moves, the potatoes and soil are shoveled up simultaneously and transported through the first conveyor belt. The conveying mechanism 2 lifts the potatoes and soil along the surface of the first conveying mechanism 2. During the lifting process, a cleaning mechanism can perform preliminary cleaning of the potatoes, and the pusher plate 5 can prevent the potatoes from sliding down the surface of the first conveying mechanism 2. After the potatoes are transported to the top of the first conveying mechanism 2, they will fall onto the second conveying mechanism 3 and be finally transported to the collection mechanism through the second conveying mechanism 3, thus completing the potato harvesting. This is existing technology and will not be described in detail (see authorization announcement number CN20689521 for details). According to the patent document of 7U, one of the core innovations of this invention is that the two sides of the overlapping plate 6 are fixed to the inner walls of the two sides of the traction frame 1, and are arranged between the first conveying mechanism 2 and the second conveying mechanism 3. The overlapping plate 6 is arranged at an angle, and the push plate 5 is arranged at equal intervals on the first conveying mechanism 2. The push plate 5 is arranged to slide along the direction perpendicular to the surface of the first conveying mechanism 2. The purpose of this arrangement is that when transporting potatoes, the push plate 5 is in the first state. Through the pushing action of the push plate 5, the potatoes can be lifted. During the process of transferring the potatoes from the first conveying mechanism 2 to the second conveying mechanism 3, the potatoes will be transported to the overlapping plate 6 and roll down the surface of the overlapping plate 6 onto the second conveying mechanism 3, so as to minimize the damage to the potatoes during the transfer. Moreover, during the transfer process, when the push plate 5 is about to move to the position of the overlapping plate 6, the existing reciprocating drive components such as electric push rods can be used to control the push plate 5 to retract inward into the space inside the first conveying mechanism 2 to switch to the second state, thereby avoiding interference between the push plate 5 and the overlapping plate 6.

[0040] Preferably, the conveyor frame 4 includes a transmission belt 7 and a first crossbar 8 disposed on the transmission belt 7. The first crossbar 8 has a through hole 9, and the push plate 5 is slidably connected to the through hole 9. Specifically, the traction frame 1 is provided with a transmission shaft 10, sprockets are disposed at both ends of the transmission shaft 10, and transmission wheels 11 are disposed on the transmission shaft 10. The side wall of the traction frame 1 has an installation groove 12, and the transmission belt 7 and the transmission wheels 11 are both embedded in the installation groove 12. The transmission wheels 11 are connected to the transmission belt 7. The transmission belt 7 can be a chain or a belt. Preferably, there are two transmission belts 7, and multiple crossbars are fixedly connected at equal intervals between the two transmission belts 7. The first crossbar 8 is arranged corresponding to the push plate 5. The first crossbar 8 is preferably a cylindrical rod, and the through hole 9 has a through hole 9. Located on the first crossbar 8, this arrangement serves to drive the transmission shaft 10 and transmission wheel 11 to rotate via the sprocket, thereby driving the transmission belt 7 to move, providing power for the movement of the first crossbar 8 and the push plate 5. During the movement of the first crossbar 8 and the push plate 5, soil will fall from the gaps between the multiple crossbars. When the push plate 5 is about to contact the overlapping plate 6, the existing reciprocating drive components such as electric push rods control the push plate 5 to slide along the through hole 9, thus enabling the push plate 5 to switch between the first state and the second state.

[0041] As an alternative to the above-mentioned electric push rod control push plate 5 switching between the first state and the second state, the traction frame 1 is provided with a drive groove 13, the push plate 5 is provided with a slider 14, and the slider 14 is slidably connected to the drive groove 13. Specifically, the drive groove 13 is preferably annular, comprising a pushing section 1301, a switching section 1302, and a clearance section 1303. The distance between the pushing section 1301, the switching section 1302, and the clearance section 1303 and the inner wall of the transmission belt 7 gradually increases. The slider 14 is fixed to both ends of the push plate 5 and slidably connected to the two drive grooves 13 respectively. The size of the push plate 5 is adapted to the size of the through hole 9. The purpose of this arrangement is that when lifting potatoes, the slider 14 is located in the pushing section 1301, at which time the push plate 5 protrudes from the surface of the first conveying mechanism 2 to achieve the function of pushing potatoes. When the push plate 5 is about to reach the position of the overlapping plate 6, the slider 14 will enter the switching section 1302. Since the distance between the pushing section 1301, the switching section 1302, and the clearance section 1303 and the inner wall of the transmission belt 7 gradually increases, the push plate 5 moves along the through hole 9 towards the transmission shaft 10. The axis slides so that the size of the push plate 5 protruding from the surface of the first conveying mechanism 2 is reduced. After the slider 14 enters the avoidance section 1303, the end of the push plate 5 is completely retracted into the through hole 9. The advantages of this setting are: firstly, during the subsequent movement of the push plate 5, it will move away from the end of the overlapping plate 6, thereby passively switching the push plate 5 from the first state to the second state to avoid interference between the push plate 5 and the overlapping plate 6; secondly, since the size of the push plate 5 is adapted to the size of the through hole 9, the inner wall of the through hole 9 will rub against the surface of the push plate 5 during the sliding of the push plate 5 along the through hole 9, thereby achieving passive cleaning of the push plate 5. After the push plate 5 and the overlapping plate 6 have avoided each other, the slider 14 will re-enter the switching section 1302 from the avoidance section 1303, and then enter the pushing section 1301, so that the push plate 5 slides in the opposite direction, thereby achieving passive reset of the push plate 5.

[0042] It should be noted that, due to the large gap between adjacent first crossbars 8, some potatoes may get stuck in the gap and cannot fall off, which may cause blockage of the first conveying mechanism 2. Furthermore, the push plate 5 is provided with a blockage clearing mechanism for clearing potatoes on the conveying frame 4; the blockage clearing mechanism includes a rotating frame 15 rotatably mounted on the push plate 5, and a blockage clearing rod 16 rotatably mounted on the rotating frame 15. Specifically, the push plate 5 has two storage slots 17 and two rotating frames 15. One end of each rotating frame 15 is rotatably disposed inside the two storage slots 17. The unblocking rod 16 is preferably a cylindrical rod, with its two ends rotatably connected to the other ends of the two rotating frames 15. One end of the stuck potato extends into the space inside the first conveying mechanism 2. This part is located on the movement stroke of the unblocking rod 16. The purpose of this arrangement is to control the rotating frame 15 to rotate in the storage slot 17 (it rotates as the push plate 5 slides along the through hole 9), thereby driving the unblocking rod 16 to rotate synchronously around the rotation point of the rotating frame 15. This allows the unblocking rod 16 to come into contact with the stuck potato and lift it up, so that the stuck potato can be dislodged from the gap, thus achieving the unblocking effect.

[0043] In another embodiment of the present invention, the rotating frame 15 includes a first section 1501 and a second section 1502 that slide together. A spring 18 is provided between the first section 1501 and the second section 1502. Specifically, one end of the first section 1501 is rotatably connected to the storage groove 17, and the other end has a telescopic groove. The unblocking rod 16 is rotatably disposed at the end of the second section 1502. The end of the second section 1502 away from the unblocking rod 16 has a sliding joint, which is slidably connected to the telescopic groove. The spring 18 is disposed inside the telescopic groove, with one end fixed to the side wall of the telescopic groove and the other end fixed to the sliding joint. The purpose of this arrangement is that when the unblocking rod 16 comes into contact with the stuck potato, it provides a reaction force to the unblocking rod 16, causing the sliding joint to slide into the telescopic groove and storing force on the spring 18 to achieve a buffering effect, thereby minimizing the damage caused by the stuck potato coming into contact with the unblocking rod 16.

[0044] As an alternative to the aforementioned motor-driven rotation of the unblocking rod 16 and the rotating frame 15, a preferred alternative is the addition of an abutment rod 19. The abutment rod 19 is fixed to the first crossbar 8 and is located along the travel stroke of the rotating frame 15. Specifically, the abutment rod 19 preferably has a U-shaped cross-section, with one end fixed to the outer circumference of the first crossbar 8. The first segment 1501 includes a vertical portion and an inclined portion. The other end of the abutment rod 19 is located along the travel stroke of the inclined portion and is chamfered. This arrangement ensures that during the transition from the first state to the second state of the push plate 5, the rotating frame 15 moves synchronously, causing the inclined portion of the first segment 1501 to abut against the end of the abutment rod 19, thus driving the rotating frame 15 to rotate counterclockwise. During subsequent rotation, the vertical portion of the first segment 1501 will... The end of the push plate 15 abuts against the end of the abutment rod 19, thereby driving the rotating frame 15 to rotate further. Thus, during the process of the push plate 5 switching from the first state to the second state, the unblocking rod 16 is passively rotated. After the potato is unblocked and the push plate 5 has moved away, the push plate 5 is passively switched from the second state to the first state under the action of the sliding connection between the slider 14 and the drive groove 13. During this process, the rotating frame 15 and the abutment rod 19 gradually move away from each other, and under the action of the side wall of the first crossbar 8 abutting against the rotating frame 15, the rotating frame 15 is driven to rotate clockwise, thus realizing the passive reset of the unblocking rod 16.

[0045] Preferably, the width of the rotating frame 15 is adapted to the width of the through hole 9. Specifically, the rotating frame 15 is symmetrically provided with protrusions, the surfaces of which abut against the side walls of the through hole 9. This allows the through hole 9 to provide a limiting function for the rotating frame 15, preventing it from swinging. During the process of the push plate 5 switching from the first state to the second state, it will drive the rotating frame 15 and the protrusions to slide outward from the through hole 9. When the protrusions slide to the outside of the through hole 9, the limiting function of the through hole 9 disappears, thereby achieving passive unlocking of the rotating frame 15. At this time, the rotating frame 15 is in a state where it can rotate freely. After the blockage is cleared, the push plate 5 will drive the rotating frame 15 to move in the opposite direction, so that the protrusions move synchronously. When the protrusions enter the interior of the through hole 9, the rotating frame 15 is locked again.

[0046] In another embodiment of the present invention, a second crossbar 20 is further included, on which a spreading assembly for spreading potatoes is provided. The spreading assembly includes a plurality of levers 21 rotatably mounted on the second crossbar 20, and a first torsion spring (not shown) is provided between the levers 21 and the second crossbar 20. A top rod 22 is slidably mounted on the second crossbar 20, and the levers 21 are located within the travel stroke of the top rod 22. The invention also includes a power assembly for driving the levers 21 to slide. Specifically, the second crossbar 20 refers to the crossbar on the front side of the push plate 5 in the direction of movement and adjacent to the first crossbar 8. A strip groove 23 is formed on the outer circumference of the second crossbar 20. The lever 21 is rotatably set in the strip groove 23. The top rod 22 is arranged along the radial direction of the second crossbar 20. The side of the lever 21 is located on the travel stroke of the end of the top rod 22. The power component can be an existing reciprocating drive component such as an electric push rod. The positions of the two adjacent levers 21 and the top rod 22 are symmetrically arranged, that is, when the top rod 22 moves, it will drive the two adjacent levers 21 to rotate in opposite directions. The lever 21 is made of elastic material, and the force required for its deformation is greater than the elastic force of the first torsion spring, and also greater than the force required when the potato is crushed. The purpose of this arrangement is that during the normal lifting process of the potato, the lever 21 is stored in the strip groove 23 under the elastic force of the first torsion spring. When it is necessary to spread the potato on the push plate 5, the power component can be used to... The component provides power to the push rod 22, causing it to slide towards the lever 21, thereby lifting the lever 21 and causing it to rotate out of the slot 23. This allows the lever 21 to store force in the first torsion spring. During the rotation of the lever 21, it comes into contact with the potatoes, thus pushing them to both sides. This has two advantages: firstly, it spreads the potatoes on the push plate 5, allowing soil to fall through the gaps; secondly, because the adjacent levers 21 and the push rod 22 are symmetrically arranged, the adjacent levers 21 rotate in opposite directions, creating a clamping effect on the potatoes between them, breaking up any larger clods of soil mixed in with the potatoes and allowing them to fall through the gaps. This achieves the initial sorting of the potatoes. After the lever 21 has completed its function, the power component controls the push rod 22 to move in the opposite direction, causing the push rod 22 to move away from the lever 21. At this point, the lever 21 automatically resets under the elastic force of the first torsion spring.

[0047] As an alternative to the aforementioned electric push rod controlling the movement of the push rod 22, preferably, the power assembly includes a transmission component 24 rotatably disposed inside the second crossbar 20, the push rod 22 being located on the movement stroke of the transmission component 24, and a transmission rod 26 being disposed on the transmission component 24, the transmission rod 26 being located on the rotation stroke of the rotating frame 15. Specifically, the transmission component 24 is not completely cylindrical, that is, it has a notch 25, and a wedge-shaped surface is provided at one end of the push rod 22 near the notch 25, the wedge-shaped surface being located on the movement stroke of the notch 25, the transmission rod 26 being fixedly connected to the outer circumferential surface of the transmission component 24, an opening slot being provided on the second crossbar 20, the transmission rod 26 extending through the opening slot to the outside of the second crossbar 20, the transmission rod 26 including a first part 2601 and a second part 2602 rotatably connected, a second torsion spring (not shown) being disposed between the first part 2601 and the second part 2602, and a second part 2602 being disposed on the second part 2602. The limiting part abuts against the first part 2601, allowing the first part 2601 to rotate only in one direction. This arrangement ensures that during the transition from the first state to the second state of the push plate 5, the rotating frame 15 rotates, causing it to abut against the first part 2601. Because the first part 2601 is limited by the limiting part, it cannot rotate relative to the second part 2602. Therefore, the transmission rod 26 drives the transmission component 24 to rotate synchronously, causing the notch 25 of the transmission component 24 to abut against the wedge-shaped surface of the push rod 22 (rotating frame 1). When the top rod 22 comes into contact with the rotating frame 15, the second section 1502 will retract slightly into the telescopic groove (but the retracted rotating frame 15 will still come into contact with the transmission rod 26), thereby driving the top rod 22 to move towards the lever 21, so that the lever 21 is passively rotated out of the strip groove 23. During the subsequent rotation of the rotating frame 15, it will drive the transmission rod 26 to continue rotating until the transmission rod 26 and the rotating frame 15 avoid each other. After avoiding each other, the elastic force of the first torsion spring is released, so that the lever 21 rotates in the opposite direction and comes into contact with the top rod 22, so that the top rod 22 slides in the opposite direction and comes into contact with the notch 25 on the wedge surface. Under the action of the transmission component 24 and the transmission rod 26, the transmission component 24 and the transmission rod 26 rotate in the opposite direction to achieve reset. After the unblocking rod 16 has finished unblocking, the rotating frame 15 rotates in the opposite direction, so that the rotating frame 15 abuts against the other side of the first part 2601. Since the second part 2602 abuts against the opening slot at this time, the transmission rod 26 as a whole cannot continue to move. It can only make the first part 2601 rotate relative to the second part 2602 to avoid it and store force on the second torsion spring. When the rotating frame 15 moves away from the first part 2601, the elastic force of the second torsion spring is released to drive the first part 2601 to automatically reset.

[0048] In summary, during the process of switching from the first state to the second state, the push plate 5 has the following strokes: first, it moves the push plate 5 away from the overlapping plate 6 to achieve avoidance; second, the push plate 5 scrapes against the through hole 9 to achieve passive cleaning; third, it drives the rotating frame 15 and the unblocking rod 16 to rotate to achieve unblocking; and fourth, it drives the rotating frame 15 to abut against the transmission rod 26 to drive the lever 21 to rotate passively to achieve potato spreading and sorting.

[0049] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An automatic crop harvesting device, comprising a traction frame and a first conveying mechanism and a second conveying mechanism disposed on the traction frame, wherein the first conveying mechanism is used to separate soil from potatoes during the transfer of potatoes, characterized in that, The first conveying mechanism includes a sprocket and a conveying frame connected to the sprocket; A push plate is slidably mounted on the conveyor frame, and an overlap plate is provided between the first conveyor mechanism and the second conveyor mechanism. The push plate has a first state for pushing potatoes and a second state for avoiding the overlap plate. The conveyor frame includes a transmission belt and a first crossbar disposed on the transmission belt. The first crossbar has a through hole, and the push plate is slidably connected to the through hole. The push plate is equipped with a clearing mechanism for cleaning the potatoes on the conveyor rack; The unblocking mechanism includes a rotating frame rotatably mounted on the push plate, and an unblocking rod rotatably mounted on the rotating frame; The rotating frame includes a first section and a second section that slide together, and a spring is provided between the first section and the second section.

2. The automatic crop harvesting device according to claim 1, characterized in that, The traction frame is provided with a drive groove, and the push plate is provided with a slider, which is slidably connected to the drive groove.

3. The automatic crop harvesting device according to claim 1, characterized in that, It also includes an abutment rod, which is fixed to the first crossbar and is located on the travel stroke of the rotating frame.

4. The automatic crop harvesting device according to claim 3, characterized in that, The width of the rotating frame is adapted to the width of the through hole.

5. An automatic crop harvesting device according to claim 3, characterized in that, It also includes a second crossbar, on which a spreading assembly for spreading potatoes is provided.

6. An automatic crop harvesting device according to claim 5, characterized in that, The paving assembly includes a plurality of levers rotatably mounted on the second crossbar, with a first torsion spring between the levers and the second crossbar. A top rod is slidably mounted on the second crossbar, and the levers are located on the travel stroke of the top rod. The assembly also includes a power component for driving the levers to slide.

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