A method for separating potato seedlings

Abstract

The present application belongs to the technical field of potato harvesting, and provides a potato and sprout separation method, which comprises the following steps: S1, a first driving unit rotates a grabbing unit to a grabbing station; S2, a first conveying unit conveys potato and sprout to the grabbing unit at the grabbing station; S3, the first driving unit rotates the grabbing unit from the grabbing station to a separation station and simultaneously drives another grabbing unit to the grabbing station; S4, a second driving unit drives the grabbing unit at the separation station to reciprocate and / or vibrate; S5, after the separation is completed, the first driving unit drives the grabbing unit from the separation station to the grabbing station and simultaneously drives another grabbing unit to the separation station; and S6, steps S1-S5 are repeated to continuously separate potato and sprout. The potato and sprout separation method provided by the present application has high separation efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the potato harvesting technical field, and in particular to a potato and stem separation method. BACKGROUND

[0002] At present, in the process of harvesting potatoes, the existing technology separates the potato stems with potatoes in the following manner: first, the first driving unit drives the grabbing unit to grab the potato stems with potatoes; then, after the grabbing is completed, the first driving unit drives the grabbing unit to the separation station; then, the second driving unit drives the grabbing unit to vibrate and / or swing in the grabbing station to separate the potatoes; after the separation is completed, the grabbing unit releases the potato stems, and then the first driving unit drives the grabbing unit to the grabbing station to grab the potato stems with potatoes. Therefore, the grabbing unit can only grab and separate the next time after the separation of the grabbing unit is completed, which results in low separation efficiency. SUMMARY

[0003] In view of the defects in the prior art, the purpose of the present application is to provide a potato and stem separation method to improve the separation efficiency.

[0004] In order to achieve the above-mentioned purpose, the present application provides a potato and stem separation method, comprising the following steps:

[0005] S1, the first driving unit rotates the grabbing unit to the grabbing station in a predetermined direction, and when the grabbing unit is in the grabbing station, the grabbing unit is in an open state;

[0006] S2, the first conveying unit conveys the potato stems with potatoes to the grabbing unit in the grabbing station;

[0007] S3, the first driving unit rotates the grabbing unit from the grabbing station to the separation station in a predetermined direction and simultaneously rotates another grabbing unit to the grabbing station in a predetermined direction, and before the grabbing unit moves from the grabbing station to the separation station or during the movement from the grabbing station to the separation station, the third driving unit drives the grabbing unit to close to grab the potato stems with potatoes;

[0008] S4, the second driving unit drives the grabbing unit in the separation station to reciprocally swing and / or vibrate to separate the potatoes in the potato stems with potatoes;

[0009] S5, after the separating is completed, the first driving unit drives the grabbing unit to rotate from the separating station to the grabbing station in a preset direction and meanwhile drives another grabbing unit to rotate from the grabbing station to the separating station in a preset direction, and before the grabbing unit moves from the separating station to the grabbing station or during the movement, the third driving unit drives the grabbing unit to open to release the potato stems after the potatoes are separated; and

[0010] S6, repeating steps S1-S5 to continuously separate the potato stems with potatoes.

[0011] Further, in S3, during the rotation of the grabbing unit from the grabbing station to the separating station in a preset direction, the third driving unit drives the grabbing unit to close to grab the potato stems with potatoes.

[0012] Further, in S5, during the rotation of the grabbing unit from the separating station to the grabbing station in a preset direction, the third driving unit drives the grabbing unit to open to release the potato stems after the potatoes are separated.

[0013] Further, the first driving unit comprises:

[0014] a roller with its axis arranged in a transverse direction, both ends of which are rotationally connected to the frame; and

[0015] a first motor fixedly arranged on the frame, a power output shaft of which is in transmission connection with a power input end of the roller.

[0016] Further, the grabbing unit is arranged on the roller and can rotate with the roller, and the grabbing unit comprises:

[0017] a first grabbing structure comprising:

[0018] a rotating shaft arranged in parallel with the roller, rotationally connected to the roller; and

[0019] a first grabbing rod with its first end fixedly connected to the rotating shaft and its second end extending away from the axis of the rotating shaft, a plurality of the first grabbing rods being arranged in sequence and at intervals along the length direction of the rotating shaft; and

[0020] a second grabbing structure, comprising a second grabbing rod, a first end of the second grabbing rod is hinged to the rotating shaft, a second end of the second grabbing rod extends away from an axis of the rotating shaft, the second end of the second grabbing rod can swing back and forth between a first position and a second position about a hinge center line of the second end, wherein, when the second end of the second grabbing rod is in the first position, the second end of the first grabbing rod and the second end of the second grabbing rod are relatively close, when the second end of the second grabbing rod is in the second position, the second end of the first grabbing rod and the second end of the second grabbing rod are relatively far apart, a plurality of the second grabbing rods are arranged in sequence along a length direction of the rotating shaft;

[0021] The third driving unit is configured to drive the second end of the second grabbing rod to swing back and forth between the first position and the second position.

[0022] Further, the third driving unit comprises:

[0023] a first driving member arranged on an inner side of the roller, an outer wall of the first driving member is in a circular arc shape;

[0024] a first driving arm matched with the first driving member, a first end of the first driving arm is fixedly connected to the second grabbing rod, a second end of the first driving arm extends into the roller in a direction close to the roller; and

[0025] a first elastic member, two ends of the first elastic member are respectively connected to the first grabbing rod and the second grabbing rod, and in a natural state, the first elastic member has a tendency to swing the second grabbing rod in a direction close to the first grabbing rod;

[0026] When the second end of the first driving arm slides on the outer wall of the first driving member, the second end of the second grabbing rod is in the second position, otherwise, the second end of the second grabbing rod is in the first position.

[0027] Further, the second driving unit comprises:

[0028] a second motor fixedly arranged on the rack;

[0029] a second driving arm, a first end of the second driving arm is fixedly sleeved on the first end of the rotating shaft, a second end of the second driving arm is free to extend;

[0030] a second driving member fixedly sleeved on a power output shaft of the second motor, the second driving member has a driving part matched with the second driving arm; and

[0031] a second elastic member arranged on the second end of the rotating shaft, two ends of the second elastic member are respectively connected to the rotating shaft and the roller.

[0032] Further, the second driving unit further comprises:

[0033] A second connecting arm is sleeved on the second end of the rotating shaft and fixedly connected to the rotating shaft; the two ends of the second elastic element are respectively connected to the first end of the second connecting arm and the roller; and

[0034] A limiting block that cooperates with the second connecting arm is fixedly mounted on the roller.

[0035] Furthermore, multiple gripping units are provided, and the multiple gripping units are evenly arranged around the rotation center line of the roller.

[0036] The beneficial effects of this invention are:

[0037] The potato vine separation method provided by this invention allows for the separation of potato vines with potatoes. When one gripping unit is in the separation station separating the vines and potatoes, another gripping unit is in the gripping station to pick up the potato vines with potatoes. This eliminates the need to wait until one separation is completed before the gripping unit can perform the next gripping and separation, resulting in higher separation efficiency. Attached Figure Description

[0038] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0039] Figure 1 This is a schematic diagram illustrating the principle of a potato vine separation method according to an embodiment of the present invention.

[0040] Figure 2 This is a perspective view of the separation device used in the potato vine separation method provided in an embodiment of the present invention;

[0041] Figure 3 for Figure 2 An enlarged view of part A shown;

[0042] Figure 4 for Figure 2 An enlarged view of section B is shown below;

[0043] Figure 5 for Figure 2 A cross-sectional view of the separation device shown;

[0044] Figure 6 for Figure 5 An enlarged view of section C is shown;

[0045] Figure 7 for Figure 2A front view of the separation device shown;

[0046] Figure 8 A front view of the separation device shown; Figure 7 An enlarged view of the D part shown;

[0047] Figure 9 A combination perspective view of the grabbing unit, the first driving arm, the first spring, the first connecting arm and the second connecting arm of the separation device used in the potato stem separation method provided by an embodiment of the present application;

[0048] Figure 10 A front view of the separation device shown; Figure 9 A front view of the separation device shown;

[0049] Reference signs:

[0050] 110, rack; 111, bearing shaft; 210, first conveying belt; 310, second conveying belt; 410, roller; 420, first motor; 430, second gear; 510, rotating shaft; 520, first grabbing rod; 530, second grabbing rod; 540, first mounting frame; 550, second mounting frame; 610, first driving member; 620, first driving arm; 630, first elastic member; 640, first connecting arm; 650, roller; 710, second motor; 720, second driving arm; 730, second driving member; 740, second elastic member; 750, second connecting arm; 760, limiting block; 770, speed reducer. DETAILED DESCRIPTION

[0051] The embodiments of the technical solutions of the present application will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0052] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in the present application should be understood as the usual meanings understood by the skilled in the art to which the present application belongs.

[0053] In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the units or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0054] In addition, the terms "first", "second", etc. are used only for descriptive purposes and should not be construed as indicating or implying relative importance or an indicated number of technical features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0055] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or internal communication of two elements or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0056] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through intermediate medium. Moreover, the first feature "on", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "under", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0057] As shown in Figures 1-10 The present application provides a potato and stem separation method, which separates potato and stem by using a separation device, the separation device comprising a grabbing unit for grabbing potato and stem with potato, a first driving unit for driving the grabbing unit to move circularly between a grabbing station and a separation station, a first conveying unit for conveying potato and stem with potato, a second driving unit for driving the grabbing unit to swing reciprocatingly between a first position and a second position, a third driving unit for driving the grabbing unit to open and close, and a second conveying unit for conveying separated potato and / or potato and stem with separated potato.

[0058] The potato and stem separation method comprises the following steps:

[0059] S1, the first driving unit rotates the grabbing unit to the grabbing station in a preset direction, and when the grabbing unit is in the grabbing station, the grabbing unit is in an open state, so as to convey the potato and stem with potato to the grabbing unit in the grabbing station by the first conveying unit. Specifically, after the grabbing unit moves to the grabbing station or during the movement of the grabbing unit to the grabbing station, the third driving unit drives the grabbing unit to open.

[0060] S2, the first conveying unit conveys the potato stems with potatoes to the grabbing units at the grabbing stations. Specifically, in this embodiment, the first conveying unit comprises first conveying rollers (not shown in the drawings), a first conveying belt 210 and a first conveying motor (not shown in the drawings). The first conveying rollers are provided in two, the first conveying belt 210 is sleeved on the two first conveying rollers and can rotate with the rotation of the first conveying rollers, and the first conveying motor is in driving connection with one of the first conveying rollers.

[0061] S3, the first driving unit rotates the grabbing units from the grabbing stations to the separating stations in a preset direction and simultaneously rotates another grabbing unit to the grabbing station in a preset direction, and before or during the movement of the grabbing units from the grabbing stations to the separating stations, the third driving unit drives the grabbing units to close to grip the potato stems with potatoes. In this process, the first driving unit can drive another grabbing unit to the grabbing station, so as to improve the separation efficiency.

[0062] S4, the second driving unit drives the grabbing units at the separating stations to reciprocate and / or vibrate to separate the potatoes from the potato stems with potatoes. Specifically, the separated potatoes fall onto the second conveying unit below under the action of gravity, and are then conveyed to the target area by the second conveying unit. Specifically, the second conveying unit comprises second conveying rollers (not shown in the drawings), a second conveying belt 310 and a second conveying motor (not shown in the drawings). The second conveying rollers are provided in two, the second conveying belt 310 is sleeved on the two second conveying rollers and can rotate with the rotation of the second conveying rollers, and the second conveying motor is in driving connection with one of the second conveying rollers.

[0063] S5, after the separation is completed, the first driving unit drives the grabbing units from the separating stations to the grabbing stations in a preset direction and simultaneously drives another grabbing unit to the separating stations in a preset direction, and before or during the movement of the grabbing units from the separating stations to the grabbing stations, the third driving unit drives the grabbing units to unfold to release the potato stems after the separation of the potatoes. Specifically, after the separation of the potatoes, the potato stems are released by the grabbing units and then fall onto the second conveying unit (not shown in the drawings) or a third conveying unit under the action of gravity, and are then conveyed to the target area.

[0064] S6, steps S1-S5 are repeated to continuously separate the potato stems with potatoes.

[0065] In this embodiment, by arranging multiple grabbing units on the drum, when one grabbing unit is at the grabbing station, another grabbing unit can separate the potato stems with potatoes at the separating station, so that the separation efficiency is high.

[0066] In one embodiment, in S3, during the process that the grabbing unit rotates from the grabbing station to the separating station in the preset direction, the third driving unit drives the grabbing unit to close to grab the potato vines with the potatoes. The grabbing unit closes during the process of moving from the grabbing station to the separating station, without the need to first close the grabbing unit and then move it from the grabbing station to the separating station, which shortens the time of the whole process and improves the separating efficiency.

[0067] Specifically, after the grabbing unit rotates by a preset angle a in the preset direction from the grabbing station to the separating station, the grabbing unit closes to grab the potato vines with the potatoes, where 0° < a ≤ 90°.

[0068] If the grabbing structure on the side of the grabbing unit facing the rotating direction thereof extends horizontally when the grabbing unit is in the grabbing station, a is larger, and the material on the grabbing unit is more likely to fall off, therefore, 0° < a < 10°; if the grabbing structure on the side of the grabbing unit facing the rotating direction thereof is obliquely arranged when the grabbing unit is in the grabbing station, a can also be appropriately increased with the increase of the oblique angle thereof.

[0069] In the embodiment, since the grabbing structure (i.e., the second grabbing structure) on the side of the grabbing unit facing the rotating direction thereof extends horizontally when the grabbing unit is in the grabbing station, in the embodiment, 0° < a < 10°.

[0070] In one embodiment, in S5, during the process that the grabbing unit rotates from the separating station to the grabbing station in the preset direction, the third driving unit drives the grabbing unit to unfold to release the potato vines after the potatoes are separated. The grabbing unit unfolds during the process of moving from the separating station to the grabbing station, without the need to first unfold the grabbing unit and then move it from the separating station to the grabbing station, which shortens the time of the whole process and improves the separating efficiency. Moreover, the grabbing unit unfolds only after the grabbing unit rotates by a preset angle β in the preset direction from the separating station to the grabbing station, which facilitates the separated potatoes and the potato vines after the potatoes are separated to be conveyed separately. Where 0° < β < 90°.

[0071] In one embodiment, the first driving unit comprises a roller 410 and a first motor 420.

[0072] The axis of the roller 410 extends horizontally, and the two ends of the roller 410 are rotationally connected with the rack 110. Specifically, a bearing shaft 111 is fixedly arranged on the rack 110, and the roller 410 is coaxially sleeved on the bearing shaft 111 and rotationally connected with the bearing shaft 111.

[0073] The first motor 420 is fixedly mounted on the frame 110. Specifically, the first motor 420 is mounted on the power input end of the drum 410 and is fixedly connected to the frame 110. The power output shaft of the first motor 420 is connected to the power input end of the drum 410. Specifically, a first gear is coaxially sleeved on the power output shaft of the first motor 420, and a second gear 430 is coaxially arranged on the power input end of the drum 410. The first gear and the second gear 430 mesh.

[0074] In use, the first motor 420 drives the first gear to rotate, and the first gear drives the roller 410 to rotate through the second gear 430, thereby achieving the purpose of driving the gripping unit to move cyclically between the gripping station and the separation station.

[0075] The first driving unit in this embodiment has a simple structure, reasonable design, and is easy to operate.

[0076] Preferably, the first motor 420 is a stepper motor or a servo motor, so as to control the rotation of the roller 410.

[0077] In one embodiment, the gripping unit is disposed on the roller 410 and can rotate with the roller 410. The gripping unit includes a first gripping structure and a second gripping structure.

[0078] The first gripping structure includes a rotating shaft 510 and a first gripping rod 520.

[0079] The rotating shaft 510 is arranged parallel to the roller 410, and the rotating shaft 510 and the roller 410 are rotatably connected. The first end of the first gripping rod 520 is fixedly connected to the rotating shaft 510, and the second end extends away from the axis of the rotating shaft 510. Multiple first gripping rods 520 are provided, and the multiple first gripping rods 520 are arranged at intervals along the length direction of the rotating shaft 510. Specifically, in this embodiment, the first gripping rods 520 are divided into multiple groups, and each group still has multiple first gripping rods 520. The multiple first gripping rods 520 in each group are fixedly connected to the rotating shaft 510 through a first mounting bracket 540, that is, the first end of the multiple first gripping rods 520 in each group is fixedly connected to the first mounting bracket 540, and the first mounting bracket 540 is fixedly connected to the rotating shaft 510.

[0080] The second grabbing structure comprises second grabbing rods 530, first ends of the second grabbing rods 530 are hinged to the rotating shaft 510, second ends of the second grabbing rods 530 extend away from the axis of the rotating shaft 510, and the second ends of the second grabbing rods 530 can swing back and forth between a first position and a second position about the hinge center lines of the second ends of the second grabbing rods 530, wherein when the second ends of the second grabbing rods 530 are in the first position, the second end of the first grabbing rod 520 and the second end of the second grabbing rod 530 are relatively close, that is, the grabbing unit is in a closed state; when the second ends of the second grabbing rods 530 are in the second position, the second end of the first grabbing rod 520 and the second end of the second grabbing rod 530 are relatively far away, that is, the grabbing unit is in an open state. The second grabbing rods 530 are provided in plurality, and the plurality of second grabbing rods 530 are sequentially and spaced apart along the length direction of the rotating shaft 510. Specifically, in the embodiment, the second grabbing rods 530 are divided into multiple groups, each group still has multiple second grabbing rods 530, and the multiple second grabbing rods 530 in each group are hinged to the rotating shaft 510 through a second mounting bracket 550, that is, the first ends of the multiple second grabbing rods 530 in each group are fixedly connected to the second mounting bracket 550, and the second mounting bracket 550 is hinged to the rotating shaft 510.

[0081] The third driving unit is configured to drive the second ends of the second grabbing rods 530 to swing back and forth between the first position and the second position.

[0082] In use, the third driving unit drives the second grabbing rods 530 to rotate to the first position, so that the first grabbing structure and the second grabbing structure are closed, and the first grabbing rod 520 and the second grabbing rod 530 cooperate to achieve the purpose of grabbing the potato stems. When it is necessary to release the potato stems, the third driving unit drives the second grabbing rods 530 to rotate from the first position to the second position, so that the first grabbing structure and the second grabbing structure are opened, thereby achieving the purpose of releasing the potato stems.

[0083] The grabbing unit provided in the embodiment has the advantages of simple structure, reasonable design, and convenient operation.

[0084] In one embodiment, the third driving unit comprises a first driving member 610, a first driving arm 620, and a first elastic member 630.

[0085] The first driving member 610 is arranged on the inner side of the roller 410, and the outer side wall of the first driving member 610 is in the shape of a circular arc.

[0086] The first driving arm 620 is matched with the first driving member 610, and the first end of the first driving arm 620 is fixedly connected with the second grabbing rod 530 and the second end extends into the inner side of the roller 410. Specifically, in the embodiment, the second grabbing rod 530 is divided into multiple groups, and each group still has multiple second grabbing rods 530. The multiple second grabbing rods 530 in each group are hingedly connected with the rotating shaft 510 through the second mounting bracket 550, that is, the first end of the multiple second grabbing rods 530 in each group is fixedly connected with the second mounting bracket 550, and the second mounting bracket 550 is hingedly connected with the rotating shaft 510. The first end of the first driving arm 620 is fixedly connected with the second mounting bracket 550. The structure can reduce the number of the first driving arm 620 and the first elastic member 630.

[0087] The two ends of the first elastic member 630 are respectively connected with the first grabbing rod 520 and the second grabbing rod 530, and in the natural state, the first elastic member 630 has a tendency to swing the second grabbing rod 530 to the direction close to the first grabbing rod 520. Specifically, the first end of the first grabbing rod 520 is fixedly connected with the first connecting arm 640. Specifically, in the embodiment, the first grabbing rod 520 is divided into multiple groups, and each group still has multiple first grabbing rods 520. The multiple first grabbing rods 520 in each group are fixedly connected with the rotating shaft 510 through the first mounting bracket 540, that is, the first end of the multiple first grabbing rods 520 in each group is fixedly connected with the first mounting bracket 540, and the first mounting bracket 540 is fixedly connected with the rotating shaft 510. The first end of the first connecting arm 640 is fixedly connected with the first mounting bracket 540, and the second end extends to the inner side of the roller 410. The two ends of the first elastic member 630 are respectively connected with the first connecting arm 640 and the first driving arm 620, and in the natural state, the first elastic member 630 has a tendency to swing the second grabbing rod 530 to the direction close to the first grabbing rod 520. Preferably, the first elastic member 630 is a spring.

[0088] When the second end of the first driving arm 620 slides on the outer side wall of the first driving member 610, the second end of the second grabbing rod 530 is in the second position, otherwise, the second end of the second grabbing rod 530 is in the first position.

[0089] Specifically, during the movement of the grabbing unit from the separating station to the grabbing station, the first driving arm 620 moves to the outer side wall of the first driving member 610, and under the cooperation of the first driving arm 620 and the first driving member 610, the first driving arm 620 swings away from the axis of the drum 410, and the second end of the second grabbing rod 530 swings to the second position, thereby achieving the purpose of opening the grabbing unit. When the second end of the second driving arm 620 moves to the outer side wall of the first driving member 610, the second end of the second grabbing rod 530 swings to the second position. Then, the second end of the second driving arm 620 moves along the outer side wall of the first driving member 610, thereby achieving the purpose of keeping the second end of the second grabbing rod 530 in the second position.

[0090] During the movement of the grabbing unit from the grabbing station to the separating station, the first driving arm 620 is separated from the outer side wall of the first driving member 610, and under the action of the elasticity of the first elastic member 630, the second end of the second grabbing rod 530 swings to the first position, thereby achieving the purpose of closing the grabbing unit.

[0091] The third driving unit provided in the embodiment has simple structure and reasonable design, and can achieve the purpose of opening and closing the grabbing unit by the rotation of the drum 410, is convenient to operate, and does not need an additional power unit, thereby saving electric energy and cost.

[0092] Preferably, the second end of the first driving arm 620 is provided with a roller 650, so as to change the sliding friction into the friction of the drum 410.

[0093] In one embodiment, the second driving unit drives the grabbing unit to swing back and forth between the third position and the fourth position, and the second driving unit comprises a second motor 710, a second driving arm 720, a second driving member 730 and a second elastic member 740.

[0094] The second motor 710 is fixedly arranged on the rack 110. The first end of the second driving arm 720 is fixedly sleeved on the first end of the rotating shaft 510, and the second end is freely extended. The second driving member 730 is in transmission connection with the power output shaft of the second motor 710, and the second driving member 730 has a driving part matched with the second driving arm 720. The second elastic member 740 is arranged at the second end of the rotating shaft 510, and the two ends of the second elastic member 740 are connected with the rotating shaft 510 and the drum 410 respectively. Preferably, the second elastic member 740 is a spring.

[0095] In use, the second motor 710 drives the second driving member 730 to rotate, and in the process of rotation of the second driving member 730, the driving part abuts against the second end of the second driving arm 720, so that the second driving arm 720 swings against the elastic force of the second elastic member 740 until the driving part is separated from the second driving arm 720, and in the process of rotation of the second driving arm 720, the second driving arm 720 rotates with the rotating shaft 510, so that the grabbing unit swings from the third position to the fourth position; after the driving part is separated from the second driving arm 720, the rotating shaft 510 rotates back under the elastic force of the second elastic member 740, so as to achieve the purpose of swinging the grabbing unit from the fourth position to the third position, and the above steps are repeated, so as to achieve the purpose of reciprocating the grabbing unit between the third position and the fourth position, and further achieve the purpose of separating the potatoes on the potato stems.

[0096] Preferably, the power output shaft of the second motor 710 is provided with a speed reducer 770, and the second driving member 730 is fixedly sleeved on the power output shaft of the speed reducer.

[0097] The second driving unit provided in the embodiment has the advantages of simple structure, reasonable design and convenient operation.

[0098] In one embodiment, the second driving unit further comprises a second connecting arm 750 and a limiting block 760.

[0099] The second connecting arm 750 is sleeved on the second end of the rotating shaft 510 and fixedly connected with the rotating shaft 510, and the two ends of the second elastic member 740 are respectively connected with the first end of the second connecting arm 750 and the roller 410. The limiting block 760 cooperates with the second connecting arm 750, and the limiting block 760 is fixedly arranged on the roller 410. Specifically, when the grabbing unit is in the third position, the limiting block 760 abuts against the second connecting arm 750 under the elastic force of the second elastic member 740, so as to achieve the purpose of keeping the grabbing unit in the third position.

[0100] In use, the second motor 710 drives the second driving member 730 to rotate, and in the process of rotation of the second driving member 730, the driving part abuts against the second end of the second driving arm 720, so that the second driving arm 720 swings against the elastic force of the second elastic member 740 until the driving part is separated from the second driving arm 720, and in the process of rotation of the second driving arm 720, the second driving arm 720 rotates with the rotating shaft 510, so that the grabbing unit swings from the third position to the fourth position; after the driving part is separated from the second driving arm 720, the rotating shaft 510 rotates back under the elastic force of the second elastic member 740, so as to achieve the purpose of swinging the grabbing unit from the fourth position to the third position, and the above steps are repeated, so as to achieve the purpose of reciprocating the grabbing unit between the third position and the fourth position, and further achieve the purpose of separating the potatoes on the potato stems.

[0101] Preferably, the grabbing units are provided in plurality, so as to improve the separation efficiency.

[0102] Preferably, the grabbing units are provided in even number, so that the uppermost one is in the grabbing station, and the lowermost one is in the separation station. In the present embodiment, the grabbing units are provided in four, and in use, one is in the grabbing waiting station, one is in the grabbing station, one is in the separation waiting station, and one is in the separation station, so that the first driving device drives the grabbing units to rotate a smaller angle, so as to achieve the purpose of separating the grabbing units between the grabbing station and the separation station, and further improve the separation efficiency.

[0103] In the description of the present application, a large number of specific details are described. However, it can be understood that the embodiments of the present application can be practiced without these specific details. In some examples, well-known methods, structures and techniques are not shown in detail in order not to obscure the understanding of the present description.

[0104] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit it; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should be covered in the scope of the claims and the description of the present application.

Claims

1. A method for separating potato vines, characterized in that, Includes the following steps: S1, the first drive unit rotates the gripping unit to the gripping station in a preset direction, and when the gripping unit is in the gripping station, the gripping unit is in the open state; S2, the first conveying unit conveys the potato vines with potatoes to the gripping unit at the gripping station; S3, the first drive unit rotates the gripping unit from the gripping station to the separation station in a preset direction and simultaneously rotates another gripping unit to the gripping station in a preset direction. Before the gripping unit moves from the gripping station to the separation station or during the movement from the gripping station to the separation station, the third drive unit drives the gripping unit to close so as to grip the potato vines with potatoes attached. S4, the second drive unit drives the gripping unit at the separation station to swing and / or vibrate back and forth to separate the potatoes from the potato vines; S5, after separation is completed, the first drive unit drives the gripping unit to rotate from the separation station to the gripping station in a preset direction and at the same time rotates another gripping unit from the gripping station to the separation station in a preset direction. Before the gripping unit moves from the separation station to the gripping station or during the movement from the separation station to the gripping station, the third drive unit drives the gripping unit to unfold so as to release the potato vines after separation. as well as S6. Repeat steps S1-S5 to continuously separate the potato vines with potatoes. The first driving unit includes: A roller (410) with its axis arranged transversely has both ends rotatably connected to the frame (110); and The first motor (420) is fixedly mounted on the frame (110), and its power output shaft is connected to the power input end of the roller (410) for transmission. The gripping unit is mounted on the roller (410) and can rotate with the roller (410). The gripping unit includes: The first crawling structure includes: A rotating shaft (510) is arranged parallel to the roller (410) and is rotatably connected to the roller (410); and First gripping rods (520), having a first end fixedly connected to the rotating shaft (510) and a second end extending away from the axis of the rotating shaft (510), are provided in multiple manner, with multiple first gripping rods (520) arranged at intervals along the length direction of the rotating shaft (510); and The second gripping structure includes a second gripping rod (530), the first end of which is hinged to the rotating shaft (510), and the second end which extends away from the axis of the rotating shaft (510). The second end of the second gripping rod (530) can swing back and forth between a first position and a second position around its own hinge center line. When the second end of the second gripping rod (530) is in the first position, the distance between the second end of the first gripping rod (520) and the second end of the second gripping rod (530) is relatively close. When the second end of the second gripping rod (530) is in the second position, the distance between the second end of the first gripping rod (520) and the second end of the second gripping rod (530) is relatively far. Multiple second gripping rods (530) are provided, and the multiple second gripping rods (530) are arranged sequentially at intervals along the length direction of the rotating shaft (510). The third drive unit is used to drive the second end of the second gripping rod (530) to swing back and forth between the first position and the second position; The third drive unit includes: The first driving member (610) is disposed on the inner side of the roller (410), and its outer side wall is arc-shaped; A first drive arm (620) cooperating with the first drive member (610) has a first end fixedly connected to the second gripping rod (530) and a second end extending into the roller (410) in a direction close to the roller (410); and The first elastic element (630) has its two ends connected to the first gripping rod (520) and the second gripping rod (530) respectively, and in its natural state, it has a tendency to swing the second gripping rod (530) toward the first gripping rod (520); Wherein, when the second end of the first drive arm (620) slides on the outer wall of the first drive member (610), the second end of the second gripping rod (530) is in the second position; otherwise, the second end of the second gripping rod (530) is in the first position. The second drive unit includes: The second motor (710) is fixedly mounted on the frame (110); The second drive arm (720) has its first end fixedly sleeved on the first end of the rotating shaft (510) and its second end extending freely. The second drive member (730) is fixedly sleeved on the power output shaft of the second motor (710), and has a drive portion that cooperates with the second drive arm (720); and The second elastic element (740) is disposed at the second end of the rotating shaft (510), and its two ends are respectively connected to the rotating shaft (510) and the roller (410); The second drive unit further includes: The second connecting arm (750) is sleeved on the second end of the rotating shaft (510) and fixedly connected to the rotating shaft (510). The two ends of the second elastic element (740) are respectively connected to the first end of the second connecting arm (750) and the roller (410); and A limiting block (760) that cooperates with the second connecting arm (750) is fixedly mounted on the roller (410).

2. The method for separating potato vines according to claim 1, characterized in that, In S3, as the gripping unit rotates from the gripping station to the separation station in a preset direction, the third driving unit drives the gripping unit to close, so as to grip the potato vines with potatoes attached.

3. The method for separating potato vines according to claim 1 or 2, characterized in that, In S5, as the gripping unit rotates from the separation station toward the gripping station in a preset direction, the third driving unit drives the gripping unit to unfold, so as to release the potato vines after the potatoes have been separated.

4. The method for separating potato vines according to claim 1, characterized in that, Multiple gripping units are provided, and the multiple gripping units are evenly arranged around the rotation center line of the roller (410).

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