Mobile tube-grown yam harvester

Abstract

The present invention relates to the technical field of crop harvesting, and in particular to a mobile tube-grown yam harvester, which comprises a casing, a frame, and a gripping device. Each casing comprises a first half shell and a second half shell, which are connected to each other to form a tubular structure. A guardrail and a conveying mechanism are provided on the frame. The gripping device comprises a first gripping mechanism and a second gripping mechanism, each of which comprises a slide assembly, a lifting assembly, and a pair of hooks. The hook of the first gripping mechanism can grip the upper end of the first half shell to separate the first half shell from the second half shell; the second gripping mechanism can drive the lower end of the second half shell to abut against the guardrail and tilt the second half shell, so that the yams in the second half shell fall onto the conveying mechanism. The mobile yam harvester of the present invention can harvest multiple casings at a time, and can also harvest large-scale tube-grown yams, and has the advantages of high efficiency, low cost, and easy operation.

Description

Technical Field

[0001] The invention relates to the technical field of crop harvesting, in particular to a mobile tube-planted yam harvester. Background Art

[0002] Yams have a complex growth pattern. Due to their deep-rooted biological characteristics and the brittle mechanical properties of their tubers, their growth is subject to many uncertainties, making harvesting extremely difficult. First, the yam must be pulled from the deep soil without damaging the roots, then cleaned of dirt, and finally bundled and packaged. If the terrain in which the yam is harvested is complex, inefficient harvesting will increase the corresponding time, labor, and packaging costs, resulting in reduced economic benefits for growers.

[0003] Tube-grown yams involve planting yam tubes within tubes, allowing them to grow within the tubes. The lateral pressure exerted by the tubes forces the yams to grow along the tubes' axis, significantly improving their quality. This method minimizes soil damage and allows for annual planting. Therefore, tube-grown yams can significantly improve economic returns compared to traditional planting methods.

[0004] However, although there are yam harvesters on the market, the yam casing must be manually lifted onto the equipment and fixed, and then the yam and soil are pushed out from the end face of the casing for harvesting. Only one tube can be harvested at a time. Although it can reduce labor, the efficiency is still low. Summary of the Invention

[0005] (1) Technical issues to be resolved

[0006] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a mobile tube-planted yam harvester to solve the problem of low efficiency of the existing yam harvesters.

[0007] (2) Technical solution

[0008] In order to achieve the above object, the present invention provides a mobile tube-planted yam harvester, which comprises:

[0009] A casing, the casing comprising a first half shell and a second half shell, the first half shell and the second half shell being butted together to form a tubular structure;

[0010] A frame, wherein a guardrail and a conveying mechanism are provided on the frame;

[0011] A gripping device, the gripping device comprising a first gripping mechanism and a second gripping mechanism, wherein the first gripping mechanism and the second gripping mechanism each comprise a slide assembly disposed on the frame, a lifting assembly disposed on the slide assembly, and hooks disposed in pairs on the lifting assembly;

[0012] Among them, the hook of the first grasping mechanism can grasp the upper end of the first half shell, and the hook of the second grasping mechanism can grasp the upper end of the second half shell, so that the first half shell can be separated from the second half shell; the second grasping mechanism can drive the lower end of the second half shell to rest against the barrier and tilt the second half shell, so that the yam in the second half shell falls onto the conveying mechanism.

[0013] Optionally, a pair of first clamping blocks are provided on the outer side of the upper end of the first half shell, and each of the first clamping blocks is provided with a trumpet-shaped slot with an opening facing downward, and the hook claws of the first grasping mechanism can be inserted into the trumpet-shaped slot one by one.

[0014] Optionally, a pair of second clamping blocks are provided on the outer side of the upper end of the second half shell;

[0015] The second card blocks are all provided with an M-shaped card slot, and a trumpet mouth protruding from the bottom surface of the second card block and opening downward is formed at the entrance of the M-shaped card slot, and the hook claws of the second grasping mechanism can be inserted into the M-shaped card slot one by one.

[0016] Optionally, the first half shell is provided with a pair of pin sleeves, and the pin sleeves are located close to the second half shell;

[0017] The second half shell is provided with a pair of latches, and the latches are located close to the first half shell;

[0018] The latches can be inserted into the pin sleeves in a one-to-one correspondence; when the first half shell is detached from the second half shell, the latches can be detached from the pin sleeves.

[0019] Optionally, the number of the sleeve is at least one;

[0020] A cross bar is provided at the bottom end of the lifting assembly, the extension direction of the cross bar is parallel to the transmission direction of the conveying mechanism, and at least one pair of hooks is provided on the cross bar.

[0021] Optionally, a sensor assembly for identifying the position of the second half shell is provided on the hook of the second gripping mechanism.

[0022] Optionally, the slide assembly includes a screw motor, a screw, a slide rod and a ball slide arranged on the top of the frame, the ball slide is sleeved on the screw, and the screw motor can drive the screw to rotate so that the ball slide slides along the slide rod;

[0023] The sliding rod extends in a horizontal direction, and the extending direction is perpendicular to the transmission direction of the conveying mechanism.

[0024] Optionally, the lifting component is an electric push rod provided on the ball slide, and the electric push rod can drive the hook to move in the up and down directions.

[0025] Optionally, the conveying mechanism is a chain conveyor, and there are gaps between adjacent chain rods of the chain conveyor.

[0026] Optionally, a walking mechanism is provided at the bottom of the frame;

[0027] And / or, a collection box is provided on the frame, and the collection box is located at the outlet end of the conveying mechanism.

[0028] (3) Beneficial effects

[0029] In the mobile tube-planted yam harvester of the present invention, the sleeve is configured to be openable and closable, making it easier to pour out the soil and yam in the tube. This is simpler and more efficient than the traditional method (exerting force from one end of the sleeve to squeeze the soil and yam out from the other end), and also reduces labor intensity. During harvesting, after the frame is moved to a predetermined position, the slide assembly and the lifting assembly cooperate with each other, allowing all hooks to move spatially until they are close to the sleeve, and allowing the hook of the first gripping mechanism to grip the upper end of the first half shell, and the hook of the second gripping mechanism to grip the upper end of the second half shell, so that the first half shell is separated from the second half shell, thereby achieving automatic opening of the sleeve and facilitating subsequent operations. At this time, the docking opening of the second half shell is facing the conveying mechanism, and then the second gripping mechanism can drive the second half shell to move horizontally to the lower end against the guardrail, and continue the horizontal movement to tilt the second half shell, so that the yam and soil in the second half shell fall onto the conveying mechanism. Afterwards, the first grasping mechanism and the second grasping mechanism move the corresponding first half shell and the second half shell to the designated position for recycling, and then carry out the next round of yam harvesting operation, thereby completing the automated harvesting of the tube-grown yam.

[0030] The mobile yam harvester of the present invention can harvest multiple tubes at a time, and can also harvest large-scale tube-grown yams, and has the advantages of high efficiency, low cost, and easy operation. Specifically, the beneficial effects of the present invention are as follows:

[0031] (1) Significantly improve work efficiency: Compared with the harvesting method of traditional yam harvesters, the work efficiency of the present invention is improved several times, greatly shortening the harvesting cycle.

[0032] (2) Reduce labor intensity: The present invention eliminates the need for growers to bend over for long periods of time, greatly reducing labor intensity and reducing health problems caused by fatigue.

[0033] (3) Reduce cost expenditure: Although the initial investment is relatively high, the high efficiency and non-destructive characteristics during the harvesting process can reduce waste caused by breakage and secondary processing costs. If large-scale planting is carried out, for example, the planting scale reaches dozens or hundreds of acres, or even develops into an industry standard method, only a small number of yam harvesters are needed to achieve harvesting operations on a large number of casings of general specifications. Its advantages are more obvious, and it can help growers achieve savings and efficiency. Moreover, each structure of the present invention can be used for multiple cycles. For example, in addition to home use, agricultural machinery can also be rented in idle time. In the long run, it can reduce the cost of use and improve economic benefits.

[0034] In short, the present invention will greatly reduce the labor intensity of yam growers, improve the yam harvest integrity rate and reduce the harvest cost, can effectively increase the economic benefits of yam growers and improve the enthusiasm of growers, and has positive significance for the development of yam planting industrialization and the development of the yam market. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 A perspective view of the mobile tube-planted yam harvester of the present invention;

[0036] Figure 2 for Figure 1 The main view;

[0037] Figure 3 for Figure 1 A top view of

[0038] Figure 4 for Figure 1 Left view of;

[0039] Figure 5 It is a left side view of a mobile tube-planted yam harvester in another embodiment of the present invention;

[0040] Figure 6 for Figure 1 An enlarged front view of the casing in FIG.

[0041] Figure 7 for Figure 6 Stereoscopic image of

[0042] Figure 8 for Figure 7 A perspective view of the second half shell in FIG.

[0043] [Description of Reference Numerals]

[0044] 10: Sleeve; 11: First half shell; 111: First clamping block; 112: Trumpet-shaped slot; 113: Pin sleeve; 12: Second half shell; 121: Second clamping block; 121A: Lower stopper; 122: M-shaped slot; 123: Trumpet mouth; 124: Latch;

[0045] 20: Frame; 21: Barrier; 22: Conveying mechanism; 221: Chain rod; 23: Traveling mechanism;

[0046] 30: grabbing device; 31: first grabbing mechanism; 32: second grabbing mechanism; 33: slide assembly; 331: screw motor; 332: screw; 333: slide rod; 334: ball slide; 34: lifting assembly; 35: hook; 36: cross bar. DETAILED DESCRIPTION

[0047] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below with reference to the accompanying drawings and through specific embodiments. Figure 1 The orientation is referenced.

[0048] like Figures 1 to 4 As shown, the present invention provides a mobile tube-planted yam harvester, which includes a sleeve 10, a frame 20 and a gripping device 30. The number of sleeves 10 can be multiple, and each sleeve 10 includes a first half shell 11 and a second half shell 12. The cross-section of each half shell is preferably semicircular or other arc-shaped, and the first half shell 11 and the second half shell 12 are connected to each other to form a tubular structure. A guardrail 21 and a conveying mechanism 22 are provided on the frame 20. The gripping device 30 includes a first gripping mechanism 31 and a second gripping mechanism 32. The first gripping mechanism 31 and the second gripping mechanism 32 both include a slide assembly 33 provided on the frame 20, a lifting assembly 34 provided on the slide assembly 33, and hooks 35 provided in pairs on the lifting assembly 34. Among them, the hook 35 of the first grasping mechanism 31 can grasp the upper end of the first half shell 11, and the hook 35 of the second grasping mechanism 32 can grasp the upper end of the second half shell 12, so that the first half shell 11 can be separated from the second half shell 12; the second grasping mechanism 32 can drive the lower end of the second half shell 12 to rest against the barrier 21 and tilt the second half shell 12, so that the yam in the second half shell 12 falls onto the conveying mechanism 22.

[0049] When planting yams, yam growers first fill each casing 10 with soil before planting the yams. When the yams are large enough to be harvested, they use the above-mentioned mobile tube-planted yam harvester to harvest them, significantly improving work efficiency. Compared with the harvesting method of traditional yam harvesters, the work efficiency of the yam harvester of the present invention is improved several times, greatly shortening the harvesting cycle. Specifically, the casing 10 is configured to be openable and closable, which makes it easier to pour out the soil and yams in the tube. This is simpler and more efficient than the traditional method (applying force from one end of the casing to squeeze the soil and yams out of the other end), and also reduces labor intensity. During harvesting, after the frame 20 is moved to a predetermined position, the slide assembly 33 and the lifting assembly 34 cooperate with each other, so that all the claws 35 can be spatially displaced until they are close to the casing 10, and the claws 35 of the first grasping mechanism 31 can grasp the upper end of the first half shell 11, and the claws 35 of the second grasping mechanism 32 can grasp the upper end of the second half shell 12, so that the first half shell 11 is separated from the second half shell 12, thereby realizing the automatic opening of the casing 10 and facilitating subsequent operations. At this time, the docking opening of the second half shell 12 faces the conveying mechanism 22, and then the second grasping mechanism 32 can drive the second half shell 12 to move horizontally to the lower end against the barrier 21, and continue the horizontal movement to tilt the second half shell 12, so that the yam and soil in the second half shell 12 fall onto the conveying mechanism 22. Afterwards, the first grasping mechanism 31 and the second grasping mechanism 32 move the corresponding first half shell 11 and second half shell 12 to a designated location for recycling, and then the next round of yam harvesting operation is carried out, thereby completing the automated harvesting of tube-grown yams. The present invention will greatly reduce the labor intensity of yam growers, improve the yam harvest integrity rate, and reduce harvesting costs. It can effectively increase the economic benefits of yam growers and improve their planting enthusiasm, and has positive significance for the development of yam planting industrialization and the development of the yam market.

[0050] In a preferred embodiment, Figures 6 to 8 As shown, a pair of first clamping blocks 111 are provided on the outer side of the upper end of the first half shell 11. The first clamping blocks 111 are located on opposite sides of the first half shell 11 (ie, the pair of first clamping blocks 111 are located on the opposite sides of the first half shell 11). Figure 2 The first clamping block 111 is provided with a trumpet-shaped slot 112 with the opening facing downward, and the hook 35 of the first grabbing mechanism 31 can be correspondingly inserted into the trumpet-shaped slot 112 (see Figure 2 and Figure 6 , see Figure 6 The dotted circle indicated by 35 on the left side of the figure illustrates the position of the hook 35 of the first grasping mechanism 31. The lower opening size of the trumpet-shaped slot 112 is larger than the upper opening size, so that the hook 35 of the first grasping mechanism 31 can be smoothly engaged with the trumpet-shaped slot 112, and then the lifting assembly 34 of the first grasping mechanism 31 lifts the first half shell 11.

[0051] Correspondingly, a pair of second clamping blocks 121 are provided on the outer side of the upper end of the second half shell 12. The second clamping blocks 121 are located on opposite sides of the second half shell 12 (ie, the pair of second clamping blocks 121 are located on opposite sides of the second half shell 12). Figure 2 The second clamping block 121 is provided with an M-shaped clamping slot 122 (its extension path is M-shaped), and a bell mouth 123 is formed at the entrance of the M-shaped clamping slot 122, which protrudes from the bottom surface of the second clamping block 121 and opens downward. The hooks 35 of the second grasping mechanism 32 can be clamped into the M-shaped clamping slot 122 one by one (see Figure 2 and Figure 6 , see Figure 6 The dotted circle indicated by 35 on the right side of the middle portion indicates the position of the hook 35 of the second gripping mechanism 32. The lower opening of the bell mouth 123 is larger than the upper opening, so that the hook 35 of the second gripping mechanism 32 can be smoothly engaged with the M-shaped slot 122, thereby allowing the second gripping mechanism 32 to lift or translate the second half shell 12.

[0052] The portion of the second clamping block 121 located below the M-shaped clamping groove 122 is the lower block 121A. The upper surface of the lower block 121A is a V-shaped groove, which is a part of the M-shaped clamping groove 122. When the first half shell 11 is lifted up and is ready to be separated from the second half shell 12, it may drive the second half shell 12 to move upward. At this time, the hook 35 of the second grasping mechanism 32 will be exactly located in the V-shaped groove of the lower block 121A (see Figure 6 ), and the hook 35 of the second grasping mechanism 32 will not move upward at this time, and the lower stopper 121A is blocked by the hook 35 of the second grasping mechanism 32, so that the second half shell 12 cannot continue to move upward. The setting of the M-shaped slot 122 makes the separation of the first half shell 11 and the second half shell 12 more straightforward and will not affect the subsequent harvesting operation, thereby improving the overall work efficiency. After the second half shell 12 has dumped the soil and yam, the second grasping mechanism 32 can place the second half shell 12 on the ground or on a recycling platform, and the hook 35 of the second grasping mechanism 32 can move out from the outlet end along the contour of the M-shaped slot 122 to facilitate the next operation. In actual production, the contour of the M-shaped slot 122 can be designed to be smoother to prevent the hook 35 of the second grasping mechanism 32 from getting stuck when moving in the M-shaped slot 122.

[0053] See also Figure 7 and Figure 8 The first half shell 11 is provided with a pair of pin sleeves 113, which are located on opposite sides of the first half shell 11 and are located close to the second half shell 12; the second half shell 12 is provided with a pair of latches 124, which are located on opposite sides of the second half shell 12 (for example, Figure 8 In the embodiment, a pair of latches 124 are located at the top, one of which is located on the left side of the second half shell 12 and the other is located on the right side of the second half shell 12), and the position of the latches 124 is close to the first half shell 11; the latches 124 can be inserted into the pin sleeves 113 in a one-to-one correspondence. In other embodiments, the positions of the pin sleeves 113 and the latches 124 can be interchanged. When the first half shell 11 is detached from the second half shell 12, the latches 124 can be detached from the pin sleeves 113. The latches 124 and the pin sleeves 113 cooperate with each other to achieve circumferential and radial limiting, so that the first half shell 11 and the second half shell 12 can be reliably docked with each other. Moreover, the mounting seat of the latches 124 can also bear the weight of the pin sleeves 113, while achieving axial limiting of the first half shell 11, it does not affect the relative separation of the first half shell 11 and the second half shell 12 during the harvesting operation.

[0054] See again Figure 1 and Figure 2 The number of casings 10 is at least one, and the mobile tube-planted yam harvester can harvest multiple casings 10 at the same time. A crossbar 36 is provided at the bottom end of the lifting assembly 34. The extension direction of the crossbar 36 is parallel to the transmission direction of the conveying mechanism 22. At least one pair of hooks 35 is provided on the crossbar 36. Figure 2 In the embodiment, three pairs of hooks 35 are spaced apart on the cross bar 36. In other embodiments, the number of pairs of hooks 35 can be set according to actual needs, thereby greatly improving the efficiency of the harvesting operation.

[0055] In a more preferred embodiment, the hook 35 of the second grasping mechanism 32 is provided with a sensor assembly (not shown) for identifying the position of the second half-shell 12. Specifically, the sensor assembly may include a bracket provided on the hook 35 and a sensor provided on the bracket. The sensor may be an existing laser position sensor or an image monitoring device, etc., for identifying whether the second half-shell 12 is in place and whether the hook 35 of the second grasping mechanism 32 has grasped the second half-shell 12.

[0056] Furthermore, the slide assembly 33 of the first grasping mechanism 31 and the second grasping mechanism 32 each includes a lead screw motor 331, a lead screw 332, a slide bar 333, and a ball slide 334, all disposed on the top of the frame 20. The ball slide 334 is sleeved on the lead screw 332. The lead screw motor 331 is capable of driving the lead screw 332 to rotate, causing the ball slide 334 to slide along the slide bar 333. The slide bar 333 extends horizontally and perpendicular to the transmission direction of the conveying mechanism 22. The ball slide 334 slides along the slide bar 333. Specifically, the slide bar 333 may be provided with a guide groove, and the ball slide 334 may be formed with a guide block, which can move along the guide groove to provide guidance. In another embodiment, in order to further improve the working efficiency, the two ends of the same screw 332 can be provided with a forward-spinning thread and a reverse-spinning thread, and two ball slides 334 are provided correspondingly. When the screw 332 rotates, the two ball slides 334 on the same screw 332 can move closer to each other or move away from each other. Moreover, the two ball slides 334 are provided with a lifting assembly 34 (see Figure 5 ), so that the two lifting components 34 can be horizontally displaced at the same time, and the working efficiency is doubled. Among them, the lifting component 34 can preferably be an electric push rod set on the ball slide 334, and the electric push rod can drive the hook 35 to move in the up and down direction.

[0057] See again Figure 1 and Figure 3 The conveying mechanism 22 is a chain conveyor, and there is a gap between adjacent chain rods 221 of the chain conveyor. During the conveying process, the gap between the chain rods 221 can prevent the yam from falling and shake off the soil on the yam, thereby achieving a preliminary separation of the yam from the soil. In addition, a collection box (not shown) is provided on the frame 20, and the collection box is located at the outlet end of the conveying mechanism 22 to collect the yam on the conveying mechanism 22, wherein the collection box can be replaced after the yam is full. Moreover, in order to facilitate the movement of the mobile tube-planted yam harvester during the harvesting operation, a walking mechanism 23 is provided at the bottom of the frame 20, and the walking mechanism 23 includes a motor, a transmission system and multiple pairs of walking wheels, etc. For details, reference can be made to existing agricultural machinery with walking function to achieve self-walking of the entire equipment.

[0058] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0059] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0060] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0061] In the description of this specification, the terms "one embodiment", "some embodiments", "embodiments", "examples", "specific examples" or "some examples" refer to the specific features, structures, materials or characteristics described in conjunction with the embodiment or example and included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification and features of different embodiments or examples, unless they are mutually inconsistent.

[0062] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may alter, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A mobile tube-planted yam harvester, characterized in that: It includes: A casing (10), the casing (10) comprising a first half shell (11) and a second half shell (12), the first half shell (11) and the second half shell (12) being butted together to form a tubular structure; A frame (20), wherein a barrier (21) and a conveying mechanism (22) are provided on the frame (20); A gripping device (30), the gripping device (30) comprising a first gripping mechanism (31) and a second gripping mechanism (32), the first gripping mechanism (31) and the second gripping mechanism (32) both comprising a slide assembly (33) arranged on the frame (20), a lifting assembly (34) arranged on the slide assembly (33), and hooks (35) arranged in pairs on the lifting assembly (34); the slide assembly (33) comprising a plurality of hooks (35) arranged on the frame ( 20), a lead screw motor (331), a lead screw (332), a slide bar (333) and a ball slide (334), wherein the ball slide (334) is sleeved on the lead screw (332), and the lead screw motor (331) can drive the lead screw (332) to rotate so that the ball slide (334) slides along the slide bar (333); the slide bar (333) extends in a horizontal direction and the extension direction is perpendicular to the transmission direction of the conveying mechanism (22); wherein the hook (35) of the first grasping mechanism (31) can grasp the upper end of the first half shell (11), and the hook (35) of the second grasping mechanism (32) can grasp the upper end of the second half shell (12), so that the first half shell (11) is separated from the second half shell (12); the second grasping mechanism (32) can drive the lower end of the second half shell (12) to abut against the barrier (21) and tilt the second half shell (12), so that the yam in the second half shell (12) falls onto the conveying mechanism (22); The first half shell (11) is provided with a pair of pin sleeves (113), and the position of the pin sleeves (113) is close to the second half shell (12); the second half shell (12) is provided with a pair of latches (124), and the position of the latches (124) is close to the first half shell (11); the latches (124) can be inserted into the pin sleeves (113) in a one-to-one correspondence; when the first half shell (11) is detached from the second half shell (12), the latches (124) can be detached from the pin sleeves (113); A pair of second clamping blocks (121) are provided on the outer side of the upper end of the second half shell (12); each of the second clamping blocks (121) is provided with an M-shaped clamping slot (122); a bell mouth (123) is formed at the entrance of the M-shaped clamping slot (122), protruding from the bottom surface of the second clamping block (121) and opening downward; the hook claws (35) of the second grasping mechanism (32) can be clamped into the M-shaped clamping slot (122) in a one-to-one correspondence; The portion of the second clamping block (121) located below the M-shaped clamping groove (122) is a lower block (121A), and the upper surface of the lower block (121A) is a V-shaped groove, which is a part of the M-shaped clamping groove (122); when the first half shell (11) is lifted up and is ready to be separated from the second half shell (12), the hook (35) of the second grasping mechanism (32) will be exactly located in the V-shaped groove of the lower block (121A).

2. The mobile tube-planted yam harvester according to claim 1, characterized in that: A pair of first clamping blocks (111) are provided on the outer side of the upper end of the first half shell (11), and each of the first clamping blocks (111) is provided with a trumpet-shaped clamping groove (112) with an opening facing downward, and the hook claws (35) of the first grasping mechanism (31) can be clamped into the trumpet-shaped clamping groove (112) in a one-to-one correspondence.

3. The mobile tube-grown yam harvester according to claim 1 or 2, characterized in that: The number of the sleeve (10) is at least one; A crossbar (36) is provided at the bottom end of the lifting assembly (34), the extension direction of the crossbar (36) is parallel to the transmission direction of the conveying mechanism (22), and at least one pair of hook claws (35) is provided on the crossbar (36).

4. The mobile tube-grown yam harvester according to claim 1 or 2, characterized in that: A sensor assembly for identifying the position of the second half shell (12) is provided on the hook (35) of the second gripping mechanism (32).

5. The mobile tube-grown yam harvester according to claim 1 or 2, characterized in that: The lifting component (34) is an electric push rod arranged on the ball slide (334), and the electric push rod can drive the hook (35) to move in the up and down directions.

6. The mobile tube-grown yam harvester according to claim 1 or 2, characterized in that: The conveying mechanism (22) is a chain conveyor, and there is a gap between adjacent chain rods (221) of the chain conveyor.

7. The mobile tube-grown yam harvester according to claim 1 or 2, characterized in that: A walking mechanism (23) is provided at the bottom of the frame (20); And / or, a collection box is provided on the frame (20), and the collection box is located at the outlet end of the conveying mechanism (22).

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