Automatic crop harvesting device

Abstract

The invention discloses an automatic crop harvesting device, and relates to the technical field of agriculture, the automatic crop harvesting device comprises a traction frame, a first conveying mechanism and a second conveying mechanism, the first conveying mechanism and the second conveying mechanism are arranged on the traction frame, and the first conveying mechanism comprises a chain wheel and a conveying frame connected with the chain wheel; a push plate is arranged on the conveying frame in a sliding mode, a lap joint plate is arranged between the first conveying mechanism and the second conveying mechanism, and the push plate has a first state used for pushing potatoes and a second state used for avoiding the lap joint plate. According to the automatic crop harvesting device, when potatoes are conveyed, the push plate is in the first state, the potatoes can be lifted through the pushing effect of the push plate, and in the process of transferring the potatoes from the first conveying mechanism to the second conveying mechanism, the potatoes can be conveyed to the lap joint plate; and the potatoes roll onto the second conveying mechanism along the surface of the lap joint plate, so that the situation that the peels of the potatoes are broken in the transferring process is avoided as much as possible.

Description

Technical Field

[0001] The invention relates to the technical field of agriculture, and in particular to an automatic crop harvesting device. Background Art

[0002] As is known, potato is a common crop, also known as potato, sweet potato, ground egg, etc., and is a widely planted tuber crop belonging to the genus Solanaceae. After the potato matures, it is usually harvested manually or mechanized.

[0003] For example, the Chinese patent document with the authorization announcement number CN206895217U, the announcement date 2018-01-19, and the name "Combined Machine for Potato Harvesting and Residual Film Recycling" adopts a new mechanism, that is, through a two-stage conveying mechanism, the potatoes move in the lower layer of the first-stage conveying shaking mechanism, and the straw and ground film move in the upper layer of the first-stage conveying shaking mechanism. After the first-stage conveying is completed, the potatoes fall down after being conveyed by the shaking mechanism, and the straw and ground film move upward along the secondary conveying mechanism. The ground film is collected by the film collection device, and the straw is thrown back to the field. Since the straw falls to the ground behind the potatoes, it avoids burying the straw underground and interfering with the picking of potatoes. At the same time, separating the ground film straw and potato mixture is conducive to the conveying shaking device to better separate potatoes from the soil and recycle residual film. The utility model has a moderate size, light weight, simple and exquisite hierarchical structure, convenience and flexibility, and improves work efficiency.

[0004] The disadvantage of the above-mentioned prior art is that when potatoes are harvested in a mechanized manner, the scooped potatoes are transported together with the soil to the first conveying mechanism, and then transported to the second conveying mechanism via the first conveying mechanism. During the transportation process, since the first conveying mechanism and the second conveying mechanism are connected at a higher position, the potatoes on the first conveying mechanism will fall directly onto the second conveying mechanism, which may easily cause the potato skin to break, thereby affecting the harvest quality of the potatoes. Summary of the invention

[0005] The purpose of the present invention is to provide an automatic crop harvesting device to solve the above-mentioned deficiencies in the prior art.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] An automatic crop harvesting device comprises a traction frame, and a first conveying mechanism and a second conveying mechanism arranged on the traction frame, wherein the first conveying mechanism is used to separate soil from potatoes during the process of transporting potatoes, and the first conveying mechanism comprises a sprocket and a conveying frame connected to the sprocket;

[0008] A push plate is slidably arranged on the conveying frame, a lap plate is arranged between the first conveying mechanism and the second conveying mechanism, and the push plate has a first state for pushing potatoes and a second state for avoiding the lap plate.

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

[0010] In the above-mentioned automatic crop harvesting device, a driving groove is provided on the traction frame, a sliding block is provided on the push plate, and the sliding block is slidably connected to the driving groove.

[0011] In the above-mentioned automatic crop harvesting device, the push plate is provided with a clearing mechanism for clearing potatoes on the conveying rack.

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

[0013] In the above-mentioned automatic crop harvesting device, the rotating frame includes a first section and a second section that are slidably connected to each other, and a spring is provided between the first section and the second section.

[0014] The above-mentioned automatic crop harvesting device also includes an abutment rod, which is fixed to the first cross bar and is located on the movement stroke of the rotating frame.

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

[0016] The above-mentioned automatic crop harvesting device also includes a second crossbar, on which a spreading assembly for spreading potatoes is provided.

[0017] In the above-mentioned automatic crop harvesting device, the spreading assembly includes a plurality of levers rotatably arranged on the second cross bar, and a first torsion spring is arranged between the lever and the second cross bar, a push rod is slidably arranged on the second cross bar, the lever is located on the movement stroke of the push rod, and also includes a power assembly for driving the lever to slide.

[0018] In the above technical solution, the present invention provides an automatic crop harvesting device, wherein a lap plate is additionally provided between the first conveying mechanism and the second conveying mechanism, and the lap plate is arranged obliquely. When transporting potatoes, the push plate is in the first state, and the potatoes can be lifted by the pushing action of the push plate. In the process of transporting the potatoes from the first conveying mechanism to the second conveying mechanism, the potatoes are transported to the lap plate and roll down along the surface of the lap plate to the second conveying mechanism, so as to avoid the skin of the potatoes being broken during the transport process as much as possible.

[0019] Furthermore, during the transportation process, when the push plate is about to move to the position of the overlapping plate, the push plate can be controlled to retract inward to switch to the second state, thereby avoiding interference between the push plate and the overlapping plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0021] Figure 1 A schematic diagram of the overall structure provided by an embodiment of the present invention;

[0022] Figure 2 A schematic diagram of a side view structure provided by an embodiment of the present invention;

[0023] Figure 3 A schematic diagram of a partial structure provided for another embodiment of the present invention;

[0024] Figure 4 A schematic diagram of the structure of a traction frame provided by another embodiment of the present invention;

[0025] Figure 5 A schematic cross-sectional structural diagram of a conveying frame provided by another embodiment of the present invention;

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

[0027] Figure 7 A schematic diagram of the rotation process of the blockage clearing rod provided in another embodiment of the present invention;

[0028] Figure 8 A schematic diagram of the overall structure of the first cross bar and the second cross bar provided in yet another embodiment of the present invention;

[0029] Fig. 9 A schematic cross-sectional view of another embodiment of the present invention;

[0030] Fig.10 A schematic cross-sectional structure diagram from another perspective provided for yet another embodiment of the present invention;

[0031] Fig.11 A schematic diagram of a connection structure between a transmission member and a transmission rod provided in yet another embodiment of the present invention;

[0032] Fig.12 A schematic structural diagram of a lever being unfolded according to another embodiment of the present invention;

[0033] Fig.13 This is a structural schematic diagram of a lever provided by yet another embodiment of the present invention being accommodated in a strip-shaped groove.

[0034] Description of reference numerals:

[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 cross bar; 9. through hole; 10. transmission shaft; 11. transmission wheel; 12. installation slot; 13. driving slot; 1301. pushing section; 1302. switching section; 1303. avoidance section; 14. slider; 15. rotating frame; 1501. first section; 1502. second section; 16. clearing rod; 17. storage slot; 18. spring; 19. abutment rod; 20. second cross bar; 21. shifting rod; 22. ejector rod; 23. strip groove; 24. transmission member; 25. notch; 26. transmission rod; 2601. first part; 2602. second part. DETAILED DESCRIPTION

[0036] In order 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 the present invention, it is necessary to understand that Fig. 9 The first cross bar 8 is located above the contact bar 19, and vice versa. Fig. 9 The direction in which the middle rotating frame 15 rotates toward the first cross bar 8 is counterclockwise, and vice versa is clockwise. The terms "center", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and 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, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the present invention.

[0038] Reference Figure 1-13An automatic crop harvesting device provided by an embodiment of the present invention comprises a traction frame 1 and a first conveying mechanism 2 and a second conveying mechanism 3 arranged on the traction frame 1, wherein the first conveying mechanism 2 is used to separate soil from potatoes during the process of transporting potatoes, and the first conveying mechanism 2 comprises a sprocket (not shown) and a conveying frame 4 connected to the sprocket; a push plate 5 is slidably arranged on the conveying frame 4, a lap plate 6 is arranged between the first conveying mechanism 2 and the second conveying mechanism 3, and the push plate 5 has a first state for pushing potatoes and a second state for avoiding the lap plate 6.

[0039] Specifically, the traction frame 1 is provided with a running wheel, which is connected to the traction vehicle and moves behind the traction vehicle through the running wheel. The traction frame 1 is provided with a scooping part. The first conveying mechanism 2 can be a conveyor belt structure, and holes are opened on its surface for soil to fall. The push plate 5 is a rectangular plate structure, which protrudes from the surface of the first conveying mechanism 2. A cleaning mechanism such as a brush is provided on the traction frame 1. When harvesting potatoes, the scooping part is inserted into the soil. As the traction vehicle moves, the potatoes and the soil can be scooped up synchronously and passed through the first conveying mechanism. The conveying mechanism 2 lifts the potatoes and soil along the surface of the first conveying mechanism 2. During the lifting process, the potatoes can be preliminarily cleaned by the cleaning mechanism, and the potatoes can be prevented from sliding down along the surface of the first conveying mechanism 2 under the action of the push plate 5. After the potatoes are transported to the top of the first conveying mechanism 2, they will fall on the second conveying mechanism 3 and finally be transported to the collecting mechanism through the second conveying mechanism 3. In this way, the potato harvest is completed. This is a prior art and will not be described in detail (see the authorization announcement No. CN20689521 for details). 7U patent document), one of the core innovations of the embodiment of the present invention is that the two side surfaces of the lap plate 6 are respectively fixedly connected 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, and the lap plate 6 is arranged obliquely, and the push plate 5 is arranged equidistantly on the first conveying mechanism 2, and the push plate 5 is arranged to slide along the direction perpendicular to the surface of the first conveying mechanism 2. The effect of such an arrangement is that when transporting potatoes, the push plate 5 is in the first state, and the potatoes can be lifted by the pushing action of the push plate 5. In the process of transporting potatoes from the first conveying mechanism 2 to the second conveying mechanism 3, the potatoes will be transported to the lap plate 6 and roll down along the surface of the lap plate 6 to the second conveying mechanism 3, so as to avoid the potato skin from being broken during the transportation process as much as possible; and in the process of transportation, when the push plate 5 is about to move to the position of the lap plate 6, the push plate 5 can be controlled by the existing reciprocating drive components such as the electric push rod to shrink inward to the space inside the first conveying mechanism 2 to switch to the second state, thereby avoiding interference between the push plate 5 and the lap plate 6.

[0040] Preferably, the conveyor frame 4 includes a transmission belt 7 and a first cross bar 8 disposed on the transmission belt 7, a through hole 9 is provided on the first cross bar 8, and the push plate 5 is slidably connected to the through hole 9. Specifically, a transmission shaft 10 is provided on the traction frame 1, sprockets are provided at both ends of the transmission shaft 10, a transmission wheel 11 is provided on the transmission shaft 10, a mounting groove 12 is provided in the side wall of the traction frame 1, the transmission belt 7 and the transmission wheel 11 are both embedded in the mounting groove 12, and the transmission wheel 11 is connected to the transmission belt 7, the transmission belt 7 can be a chain or a belt, and the transmission belt 7 is preferably two, and a plurality of cross bars are fixedly connected equidistantly between the two transmission belts 7, and the first cross bar 8 is arranged corresponding to the push plate 5, and the first cross bar 8 is preferably a cylindrical rod, and the through hole 9 is provided. It is arranged on the first cross bar 8. The purpose of such arrangement is to drive the transmission shaft 10 and the transmission wheel 11 to rotate through the sprocket, and then drive the transmission belt 7 to move, so as to provide power for the first cross bar 8 and the push plate 5 to move. During the movement of the first cross bar 8 and the push plate 5, the soil will fall from the gaps between the multiple cross bars. When the push plate 5 is about to contact the lap plate 6, the push plate 5 is controlled to slide along the through hole 9 through the existing reciprocating drive components such as the electric push rod, so that the push plate 5 can be switched between the first state and the second state.

[0041] As an alternative solution for the electric push rod to control the push plate 5 to switch between the first state and the second state, a driving groove 13 is provided on the traction frame 1, and a slider 14 is provided on the push plate 5, and the slider 14 is slidably connected to the driving groove 13. Specifically, the driving groove 13 is preferably annular, which includes a pushing section 1301, a switching section 1302 and an avoidance section 1303. The distances between the pushing section 1301, the switching section 1302 and the avoidance section 1303 and the inner wall of the transmission belt 7 gradually increase. The slider 14 is fixed to the two ends of the push plate 5 and is slidably connected to the two driving grooves 13 respectively, and the size of the push plate 5 is adapted to the size of the through hole 9. The effect of such a setting is that when lifting potatoes, the slider 14 is located in the pushing section 1301. At this 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 lap plate 6, the slider 14 will enter the switching section 1302. Since the distances between the pushing section 1301, the switching section 1302 and the avoidance section 1303 and the inner wall of the transmission belt 7 gradually increase, the push plate 5 moves along the through hole 9 toward the transmission shaft 10. The push plate 5 slides in the direction of the axis so that the size of the push plate 5 protruding from the surface of the first conveying mechanism 2 becomes smaller. 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 such a configuration are, firstly, in the subsequent movement of the push plate 5, it will be away from the end of the lap plate 6, so that the push plate 5 is passively switched from the first state to the second state to avoid interference between the push plate 5 and the lap plate 6. Secondly, since the size of the push plate 5 is compatible with the size of the through hole 9, the inner wall of the through hole 9 will scratch the surface of the push plate 5 during the sliding of the push plate 5 along the through hole 9, so as to achieve passive cleaning of the push plate 5. After the push plate 5 and the lap plate 6 have completed the avoidance, 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 resetting of the push plate 5.

[0042] It should be noted that, due to the large gap between adjacent first cross bars 8, some potatoes may be stuck in the gap and unable to fall, which may easily cause blockage of the first conveying mechanism 2. Furthermore, the push plate 5 is provided with a clearing mechanism for cleaning potatoes on the conveying frame 4; the clearing mechanism includes a rotating frame 15 rotatably arranged on the push plate 5, and a clearing rod 16 is rotatably arranged on the rotating frame 15. Specifically, two receiving grooves 17 are provided on the push plate 5, and there are two rotating frames 15. One ends of the two rotating frames 15 are rotatably arranged inside the two receiving grooves 17 respectively. The clearing rod 16 is preferably a cylindrical rod, and its two ends are rotatably connected to the other ends of the two rotating frames 15 respectively. One end of the stuck potato will extend to the space inside the first conveying mechanism 2, and this part is located on the movement stroke of the clearing rod 16. The purpose of such a setting is to control the rotating frame 15 to rotate in the receiving groove 17 (which rotates during the sliding process of the push plate 5 along the through hole 9), thereby driving the clearing rod 16 to rotate synchronously around the rotation point of the rotating frame 15, so that the clearing rod 16 abuts against the stuck potato to lift it up, so that the stuck potato can be separated from the gap, thereby achieving the clearing effect.

[0043] As another embodiment of the present invention, the rotating frame 15 includes a first section 1501 and a second section 1502 that are slidably connected to each other, and a spring 18 is arranged between the first section 1501 and the second section 1502. Specifically, one end of the first section 1501 is rotatably connected to the storage slot 17, and the other end is provided with a telescopic slot. The clearing rod 16 is rotatably arranged at the end of the second section 1502, and the end of the second section 1502 away from the clearing rod 16 is provided with a sliding connection portion, which is slidably connected to the telescopic slot. The spring 18 is arranged inside the telescopic slot, one end of which is fixedly connected to the side wall of the telescopic slot, and the other end is fixedly connected to the sliding connection portion. The effect of such arrangement is that when the clearing rod 16 abuts against the stuck potato, a reaction force will be provided to the clearing rod 16, so that the sliding connection portion slides into the telescopic slot and accumulates force on the spring 18 to achieve a buffering effect, thereby minimizing the damage caused by the hard abutment between the stuck potato and the clearing rod 16.

[0044] As an alternative to the above-mentioned motor driving the clearing rod 16 to rotate the rotating frame 15, it is preferred that an abutment rod 19 is further included, the abutment rod 19 being fixedly connected to the first cross bar 8, and the abutment rod 19 being located on the movement stroke of the rotating frame 15. Specifically, the cross section of the abutment rod 19 is preferably U-shaped, one end of which is fixedly connected to the outer peripheral surface of the first cross bar 8, the first section 1501 includes a vertical portion and an inclined portion, the other end of the abutment rod 19 is located on the movement stroke of the inclined portion, and the end is chamfered. The effect of such a setting is that in the process of the push plate 5 switching from the first state to the second state, it will drive the rotating frame 15 to move synchronously, so that the inclined portion of the first section 1501 abuts against the end of the abutment rod 19, so as to drive the rotating frame 15 to rotate counterclockwise, and in the subsequent rotation process, the side of the vertical portion of the first section 1501 will be The surface abuts against the end of the abutment rod 19 to drive the rotating frame 15 to rotate further, so that the clearing rod 16 is driven to rotate passively during the process of the push plate 5 switching from the first state to the second state. When the potato blockage is cleared and the push plate 5 is avoided, 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 driving 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 abutment between the side wall of the first cross bar 8 and the rotating frame 15, the rotating frame 15 is driven to rotate clockwise, thereby realizing the passive resetting of the clearing 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, and the surfaces of the protrusions abut against the two side walls of the through hole 9, so that the through hole 9 provides a limiting effect on the rotating frame 15 to prevent the rotating frame 15 from swinging. When the push plate 5 switches from the first state to the second state, it will drive the rotating frame 15 and the protrusions to slide outside the through hole 9. When the protrusions slide to the outside of the through hole 9, the limiting effect of the through hole 9 on them disappears, so as to realize the passive unlocking of the rotating frame 15. At this time, the rotating frame 15 is in a state where it can rotate freely. When 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 inside of the through hole 9, the rotating frame 15 is locked again.

[0046] As another embodiment of the present invention, it further comprises a second cross bar 20, on which a spreading assembly for spreading potatoes is disposed. The spreading assembly comprises a plurality of levers 21 rotatably disposed on the second cross bar 20, and a first torsion spring (not shown) is disposed between the levers 21 and the second cross bar 20, a push rod 22 is slidably disposed on the second cross bar 20, the lever 21 is located on the movement stroke of the push rod 22, and a power assembly for driving the lever 21 to slide is further comprised. Specifically, the second cross bar 20 refers to the cross bar at the front side of the movement direction of the push plate 5 and adjacent to the first cross bar 8. A strip groove 23 is opened on the outer peripheral surface of the second cross bar 20. The lever 21 is rotatably arranged in the strip groove 23. The top rod 22 is arranged along the radial direction of the second cross bar 20. The side of the lever 21 is located on the movement 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 is also greater than the force required when the potato is clamped and broken. The effect of such a setting 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 the potato on the push plate 5 needs to be spread out, the power component is used. The lever 21 is provided with power by the push rod 22, so that the push rod 22 slides in the direction of the lever 21, thereby lifting the lever 21, so that the lever 21 is rotated out of the strip groove 23, and the first torsion spring is charged. During the rotation of the lever 21, it will contact with the potato, thereby pushing the potato to both sides. The advantages brought by this are: first, the potatoes on the push plate 5 are spread out to facilitate the soil to fall from the gap; second, since the positions of the two adjacent levers 21 and the push rod 22 are symmetrically arranged, the two adjacent levers 21 will rotate in opposite directions to produce a clamping effect on the potatoes between the adjacent levers 21, so as to clamp and disperse the larger-sized soil blocks mixed in the potatoes and drop them from the gap, thus realizing the effect of preliminary potato sorting. After the effect of the lever 21 is completed, the power component controls the push rod 22 to move in the opposite direction, so that the push rod 22 is separated from the lever 21, and the lever 21 is automatically reset under the elastic force of the first torsion spring.

[0047] As an alternative to the above-mentioned electric push rod controlling the movement of the push rod 22, preferably, the power assembly includes a transmission member 24 rotatably arranged inside the second cross bar 20, the push rod 22 is located on the movement stroke of the transmission member 24, and a transmission rod 26 is arranged on the transmission member 24, and the transmission rod 26 is located on the rotation stroke of the rotating frame 15. Specifically, the transmission member 24 is an incomplete cylindrical shape, that is, it has a notch 25 position, and the end of the push rod 22 close to the notch 25 is provided with a wedge surface, and the wedge surface is located on the movement stroke of the notch 25. The transmission rod 26 is fixed to the outer peripheral surface of the transmission member 24, and an open groove is provided on the second cross bar 20. The transmission rod 26 passes through the open groove and extends to the outside of the second cross bar 20. The transmission rod 26 includes a first part 2601 and a second part 2602 that are rotatably connected. A second torsion spring (not shown) is arranged between the first part 2601 and the second part 2602, and a second torsion spring (not shown) is arranged on the second part 2602. The limiting portion is in contact with the first portion 2601 so that the first portion 2601 can only rotate in one direction. The function of such a setting is that when the push plate 5 switches from the first state to the second state, the rotating frame 15 will be driven to rotate, so that the rotating frame 15 and the first portion 2601 are in contact. Since the first portion 2601 is limited by the limiting portion, the first portion 2601 and the second portion 2602 cannot rotate relative to each other. Therefore, the transmission member 24 is driven to rotate synchronously through the transmission rod 26, so that the position of the notch 25 of the transmission member 24 is in contact with the wedge-shaped surface of the push rod 22 (the rotating frame 1 5 abuts against the push rod 22, the second section 1502 will shrink a little into the telescopic groove, but the retracted rotating frame 15 will still abut against the transmission rod 26), so as to drive the push rod 22 to move in the direction of 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, the transmission rod 26 will continue to rotate 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 to drive the lever 21 to rotate in the opposite direction and abut against the push rod 22, so that the push rod 22 slides in the opposite direction and abuts against the notch 25 on the wedge surface. Under the action, the transmission member 24 and the transmission rod 26 are driven to rotate in the opposite direction to achieve reset. When the clearing rod 16 has cleared the blockage, 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 open groove at this time, the transmission rod 26 as a whole cannot continue to move, and the first part 2601 can only be rotated relative to the second part 2602 to achieve avoidance and accumulate force in the second torsion spring. When the rotating frame 15 is 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] To sum up, in the process of switching the push plate 5 from the first state to the second state, it has the following strokes: first, it drives the push plate 5 and the lap plate 6 to move away from each other to achieve an avoidance stroke; second, the push plate 5 rubs against the through hole 9 to achieve a passive cleaning stroke; third, it drives the rotating frame 15 and the clearing rod 16 to rotate to achieve a clearing stroke; fourth, it drives the rotating frame 15 to abut against the transmission rod 26 to drive the lever 21 to passively rotate to achieve the potato spreading and sorting stroke.

[0049] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that 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 above 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 arranged on the traction frame, wherein the first conveying mechanism is used to separate soil from potatoes during the process of transporting potatoes, and is characterized in that: The first conveying mechanism includes a sprocket and a conveying frame connected to the sprocket; A push plate is slidably arranged on the conveying frame, a lap plate is arranged between the first conveying mechanism and the second conveying mechanism, and the push plate has a first state for pushing potatoes and a second state for avoiding the lap plate.

2. The automatic crop harvesting device according to claim 1, characterized in that: The conveyor frame includes a transmission belt and a first cross bar arranged on the transmission belt. A through hole is opened on the first cross bar, and the push plate is slidably connected to the through hole.

3. The automatic crop harvesting device according to claim 2, characterized in that: The traction frame is provided with a driving groove, the push plate is provided with a sliding block, and the sliding block is slidably connected with the driving groove.

4. The automatic crop harvesting device according to claim 2, characterized in that: The push plate is provided with a clearing mechanism for clearing potatoes on the conveying rack.

5. The automatic crop harvesting device according to claim 4, characterized in that: The blockage clearing mechanism comprises a rotating frame rotatably arranged on the push plate, and a blockage clearing rod is rotatably arranged on the rotating frame.

6. The automatic crop harvesting device according to claim 5, characterized in that: The rotating frame includes a first section and a second section which are slidably connected to each other, and a spring is arranged between the first section and the second section.

7. The automatic crop harvesting device according to claim 5, characterized in that: It also includes an abutment rod, which is fixed to the first crossbar and is located on the movement stroke of the rotating frame.

8. The automatic crop harvesting device according to claim 7, characterized in that: The width of the rotating frame is matched with the width of the through hole.

9. The automatic crop harvesting device according to claim 7, characterized in that: The utility model further comprises a second cross bar, on which a spreading assembly for spreading potatoes is arranged.

10. The automatic crop harvesting device according to claim 9, characterized in that: The paving assembly includes a plurality of levers rotatably arranged on the second cross bar, and a first torsion spring is arranged between the lever and the second cross bar, a push rod is slidably arranged on the second cross bar, the lever is located on the movement stroke of the push rod, and also includes a power assembly for driving the lever to slide.

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