Rhizome crop digging machine

Abstract

The invention relates to the technical field of crop harvesting, in particular to a rhizome crop digging machine which comprises a machine frame, a walking device, a gathering device, a cutting device, a digging and conveying device, a rotary drum mud screening device and a collecting and dumping device, and the walking device, the gathering device, the cutting device, the digging and conveying device, the rotary drum mud screening device and the collecting and dumping device are arranged on the machine frame. The roller sludge screening device comprises a roller rotationally arranged on the rack and a roller driving assembly for driving the roller to rotate, the inlet end of the roller faces the rear end of the conveying mechanism, the outlet end of the roller faces the rear end of the rack, a plurality of sludge leaking holes are formed in the roller, and spiral blades are arranged on the inner surface of the roller. The tuber crop digging machine can realize integration of multiple functions of cutting stalks, digging taros, conveying the taros, removing mixed soil, collecting the taros, unloading the taros and the like.

Description

Technical Field

[0001] The present invention relates to the technical field of crop harvesting, in particular to a root crop digging machine. Background Art

[0002] Taro, consumed as both a grain and a vegetable, provides a wealth of nutrients. It can also be used in medicinal processing, possessing significant health benefits. As its various benefits become increasingly apparent, taro cultivation has begun in large quantities in many regions both internationally and domestically. Sandy loam or clay loam soils are preferred for taro cultivation, as these soils offer excellent air permeability and are effective in retaining moisture.

[0003] Automated taro harvesting machines are not yet widely used in my country, and their design is immature. Furthermore, the complex and labor-intensive taro harvesting process, influenced by soil quality, geographic location, and economic conditions, consumes time and manpower, making it a significant undertaking for farmers. In rural areas, the aging population is becoming increasingly prominent, and manual harvesting methods are often affected by numerous factors, resulting in high taro damage rates and low efficiency.

[0004] Therefore, in view of the problems that the harvesting efficiency of root crops such as taro is very low and the harvesting requires a lot of manpower and time, it is very meaningful to develop a harvesting machine that has the functions of stem cutting and digging. Summary of the Invention

[0005] (1) Technical issues to be solved

[0006] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a root crop digging machine to solve the problem of low harvesting efficiency of root crops such as taro.

[0007] (2) Technical solution

[0008] In order to achieve the above object, the present invention provides a root crop digging machine, which comprises:

[0009] frame;

[0010] A walking device, the walking device is arranged at the bottom of the frame;

[0011] a gathering device, the gathering device being arranged at the front end of the frame so as to be able to gather and clamp the stems on the ground;

[0012] a cutting device, the cutting device being located below the gathering device so as to be able to cut the clamped stems;

[0013] An excavation and conveying device includes a conveying mechanism with a rear end hinged to the frame, a shovel provided at the front end of the conveying mechanism, and a lifting mechanism for driving the shovel to move upward and downward; when the lifting mechanism drives the shovel downward, the shovel can dig roots in the ground, and the conveying mechanism can transport the excavated roots backward;

[0014] A drum mud screening device, comprising a drum rotatably arranged on the frame and a drum driving assembly driving the drum to rotate, wherein the inlet end of the drum faces the rear end of the conveying mechanism, and the outlet end of the drum faces the rear end of the frame, a plurality of mud leakage holes are opened on the drum, and spiral blades are provided on the inner surface of the drum, and the rotating drum can screen the mud of the rhizomes when conveying the rhizomes;

[0015] A collecting and dumping device is provided at the rear end of the frame so as to collect the roots and rhizomes after the mud is screened and dump them at intervals.

[0016] Optionally, the gathering device includes a first side plate and a second side plate arranged opposite to each other, and the front end of the first side plate and the front end of the second side plate jointly form a trumpet-shaped opening so as to be able to gather and clamp the stems on the ground; the first side plate is fixedly mounted on the frame, and the second side plate is mounted on the frame through an elastic bracket so as to be able to adjust the distance between the first side plate and the second side plate.

[0017] Optionally, the cutting device includes a saw blade drive assembly and a saw blade slidably mounted below the retracting device, and the saw blade drive assembly can drive the saw blade to perform linear reciprocating motion along the transverse direction of the frame.

[0018] Optionally, the root crop harvester also includes a stem conveying device located at the rear end of the gathering device, and the stem conveying device includes a conveying mechanism and an auxiliary mechanism relatively spaced apart on the frame, and a transverse conveying channel is formed between the conveying mechanism and the auxiliary mechanism, the inlet end of the conveying channel is connected to the rear end of the gathering device, and the outlet end of the conveying channel faces the side of the frame, so as to be able to convey the cut stems to the side of the frame.

[0019] Optionally, the conveying mechanism includes a conveyor belt wheel set and a conveyor belt driving assembly for driving the conveyor belt wheel set, the working surface of the conveyor belt of the conveyor belt wheel set is perpendicular to the horizontal plane, and the conveying direction is from the inlet end of the conveying channel toward the outlet end of the conveying channel;

[0020] The auxiliary mechanism includes a plurality of auxiliary rollers arranged in a row, the auxiliary rollers are rotatably mounted on the frame and the axes of the auxiliary rollers are perpendicular to the horizontal plane; the conveying channel is formed between the conveyor belt and the auxiliary rollers arranged in a row.

[0021] Optionally, there are multiple conveyor belts, and the multiple conveyor belts are spaced apart and arranged parallel to each other.

[0022] A plurality of tossing edges are arranged at intervals on the outer circumference of the auxiliary roller, and the extending direction of the tossing edges is parallel to the axis of the auxiliary roller; the side of the tossing edge away from the auxiliary roller is bent and inclined toward the rotation direction of the auxiliary roller.

[0023] Optionally, the conveying mechanism includes a mounting bracket whose rear end is hinged to the frame, a conveyor belt wheel set provided on the mounting bracket, and a conveyor belt drive assembly that drives the conveyor belt wheel set; the digging shovel is provided at the front end of the mounting bracket; a plurality of protrusions or protrusions are provided at intervals on the outer surface of the conveyor belt of the conveyor belt drive assembly to prevent roots on the conveyor belt from rolling forward; side baffles are also provided on the mounting bracket at positions on both sides of the conveyor belt;

[0024] The lifting mechanism is a telescopic rod, one end of which is hinged to the frame and the other end of which is hinged to the front end of the mounting bracket.

[0025] Optionally, a pair of limiting brackets are provided on the frame, each of the limiting brackets includes a pair of mounting seats, a mounting rod mounted between the pair of mounting seats, and a limiting arc provided on the mounting rod, the limiting arcs on the pair of limiting brackets are relatively arranged based on the roller, the curvature of the limiting arcs is adapted to the curvature of the roller so as to radially limit the roller, and the roller can rotate between the relative limiting arcs;

[0026] A gear ring is formed on the outer surface of the drum, and the drum driving assembly includes a motor and a gear set connected to the output shaft of the motor, and the output gear of the gear set can mesh with the gear ring.

[0027] Optionally, a groove is formed on one side of the limiting arc close to the roller, and an annular ridge is formed on the outer surface of the roller, and the annular ridge can be inserted into the groove. When the roller rotates, the annular ridge slides in the groove;

[0028] Alternatively, a ridge is formed on one side of the limiting arc close to the roller, and an annular groove is formed on the outer surface of the roller. The ridge can be inserted into the annular groove, and when the roller rotates, the ridge slides in the annular groove.

[0029] Optionally, the collecting and dumping device includes an outer frame provided on the frame, an inner frame hinged in the outer frame, and a dumping drive assembly for driving the inner frame to dump;

[0030] The outer frame includes a first side wall and a second side wall and a third side wall arranged opposite to each other, wherein the first side wall connects the first end of the second side wall and the first end of the third side wall; a material receiving notch is formed on the second side wall, and the material receiving notch corresponds to the outlet end of the drum;

[0031] The inner frame includes a bottom plate and a fourth side wall, one end of the bottom plate is connected to the bottom end of the fourth side wall, and the bottom end of the fourth side wall is hinged to the second end of the second side wall and the second end of the third side wall;

[0032] When the collecting and dumping device is in a collecting state, the bottom plate blocks the bottom of the outer frame, and the fourth side wall blocks the second end of the second side wall and the second end of the third side wall; when the dumping drive assembly drives the inner frame to rotate based on the hinge axis, the fourth side wall flips outward.

[0033] (3) Beneficial effects

[0034] The present invention is designed to harvest root crops, such as taro, from land, by designing a highly automated root crop harvester. This machine integrates multiple functions, including stalk cutting, taro excavation, taro transport, soil removal, taro collection, and taro unloading. Furthermore, the entire harvesting process is simple to operate and highly efficient, taking into full consideration efficiency, convenience, and environmental considerations. This provides a one-stop solution for taro growers, significantly reducing labor intensity, facilitating rapid and efficient harvesting, and lowering production costs, thereby achieving automated production within this traditional industry.

[0035] Furthermore, when harvesting taro using the aforementioned root crop harvester, the breakage rate is as low as 2%, an extremely low breakage rate that allows the taro to remain intact, achieving high taro yields with a low breakage rate and ensuring the quality of the taro. The conveying mechanism and rollers essentially eliminate any squeezing, impacting, or other actions that could damage the taro, ensuring a safe taro conveying process. This minimizes loss and waste during conveyance and provides a high degree of protection for the taro. The conveying capacity is large and fully automated. After the conveying process is complete, the taro is automatically transported to a collection and dumping device. When the collected taro reaches a certain weight, the collection and dumping device flips under motor control and dumps the taro to a designated location.

[0036] The above-mentioned root crop digging machine has a series of advantages such as high applicability, low cost, simple operation, safety and reliability, etc. It meets the needs of taro harvesting very well and has great market development potential. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 This is a front view of the root crop digging machine of the present invention;

[0038] Figure 2 for Figure 1 Rear view;

[0039] Figure 3 for Figure 1 Stereoscopic image of

[0040] Figure 4 for Figure 3 A stereogram from another perspective;

[0041] Figure 5 for Figure 4 A stereogram from another perspective;

[0042] Figure 6 It is an enlarged perspective view of the excavation and conveying device of the present invention;

[0043] Figure 7 for Figure 4 Partial exploded view after omitting some structures;

[0044] Figure 8 is an enlarged perspective view of the auxiliary mechanism of the present invention;

[0045] Figure 9 It is an enlarged perspective view of the drum mud screening device of the present invention;

[0046] Figure 10 for Figure 9 A stereogram from another perspective;

[0047] Figure 11 for Figure 9 The main view;

[0048] Figure 12 for Figure 9 Right view of;

[0049] Figure 13 An enlarged perspective view of the collecting and pouring device of the present invention;

[0050] Figure 14 for Figure 13 A top view of

[0051] Figure 15 It is a schematic diagram of the principle of the collection and dumping device of the present invention.

[0052] [Description of Reference Numerals]

[0053] 10: rack;

[0054] 20: walking device;

[0055] 30: folding device; 31: first side panel; 32: second side panel; 321: mounting frame; 33: elastic bracket;

[0056] 40: cutting device; 41: saw blade drive assembly; 42: saw blade; 43: guide plate;

[0057] 50: Excavation and conveying device; 51: Conveying mechanism; 511: Mounting bracket; 512: Conveyor belt pulley assembly; 513: Conveyor belt drive assembly; 5131: Raised strip; 514: Side baffle; 52: Digging shovel; 53: Lifting mechanism;

[0058] 60: Drum mud screening device; 61: Drum; 611: Mud leakage hole; 612: Spiral blade; 613: Ring gear; 614: Annular edge; 62: Drum drive assembly; 621: Motor; 622: Gear set; 623: Auxiliary gear; 63: Limit bracket; 631: Mounting seat; 632: Mounting rod; 633: Limit arc;

[0059] 70: Collecting and dumping device; 71: Outer frame; 711: First side wall; 712: Second side wall; 7121: Material receiving slot; 713: Third side wall; 72: Inner frame; 721: Bottom plate; 722: Fourth side wall; 723: Side guard plate; 73: Dumping drive assembly; 731: Rack track; 732: Moving mechanism; 733: Connecting rod; 734: Connecting seat;

[0060] 80: Stalk conveying device; 81: Conveying mechanism; 811: Conveyor belt wheel set; 812: Conveyor belt driving assembly; 82: Auxiliary mechanism; 821: Driving edge; 83: Conveying channel. DETAILED DESCRIPTION

[0061] 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 of the device is used as a reference, and the "front" and "rear" mentioned in this article are determined based on the direction of travel of the device.

[0062] like Figures 1 to 6 As shown, the present invention provides a root crop excavator, which includes a frame 10 and a walking device 20, a gathering device 30, a cutting device 40, an excavating and conveying device 50, a drum mud screening device 60 and a collecting and dumping device 70 arranged on the frame 10.

[0063] The gathering device 30 is located at the front end of the frame 10 to gather and clamp the stems on the ground. The cutting device 40 is located below the gathering device 30 to cut the clamped stems. The excavation and conveying device 50 includes a conveying mechanism 51 whose rear end is hinged to the frame 10, a shovel 52 located at the front end of the conveying mechanism 51, and a lifting mechanism 53 that drives the shovel 52 to rise and fall. When the lifting mechanism 53 drives the shovel 52 to descend, the shovel 52 can dig the roots in the ground, and the conveying mechanism 51 can transport the excavated roots backward. The shovel 52 at the front end of the conveying mechanism 51 is inclined at a certain angle to the ground to better penetrate the ground during travel and dig the taro fruits out of the ground. When the frame 10 does not need to dig roots, the lifting mechanism 53 can drive the shovel 52 to rise to avoid damaging the shovel 52 during travel.

[0064] The drum mud screening device 60 includes a drum 61 rotatably arranged on the frame 10 and capable of rotating on the frame 10, and a drum driving assembly 62 driving the drum 61 to rotate, the inlet end of the drum 61 faces the rear end of the conveying mechanism 51, and the outlet end of the drum 61 faces the rear end of the frame 10, and a plurality of mud leakage holes 611 are provided on the drum 61 (densely distributed in the form of multiple rows and columns, and the total area of all mud leakage holes 611 exceeds half of the area of the outer surface of the drum 61 to facilitate the discharge of mud and sand), and a spiral blade 612 is provided on the inner surface of the drum 61. The rotating drum 61 can screen the mud of the rhizomes when transporting the rhizomes, and the spiral blade 612 can enhance the effect of removing mud and sand on the rhizomes. The collecting and dumping device 70 is arranged at the rear end of the frame 10. The roots and rhizomes excavated by the shovel 52 are transferred from the inlet end of the drum 61 to the outlet end of the drum 61 through the conveying mechanism 51, and then enter the collecting and dumping device 70. The collecting and dumping device 70 can collect the roots and rhizomes after the mud is screened and dump them at intervals. When the root crops in the collecting and dumping device 70 have been collected to a predetermined amount, they can be turned over and dumped to a designated location.

[0065] Among them, the walking device 20 includes a power system and multiple pairs of running wheels provided on the frame 10. The power system can drive the running wheels to drive the frame 10 to move (refer to existing walking agricultural machinery equipment). Specifically, the power system can preferably be a permanent magnet synchronous motor, which transmits torque to the running wheels through a pulley set to achieve power transmission. Alternatively, in other embodiments, the walking device 20 can also be simplified to include only multiple pairs of running wheels and be propelled by manpower. In addition, the frame 10 can be made of various types of industrial aluminum profiles spliced together by various types of aluminum profile angle connectors to ensure the overall strength of the equipment.

[0066] In the present invention, taking taro as an example, the root crop harvester can achieve multifunctional integration, including cutting stems, digging taro, transporting taro, removing impurities, collecting taro, and unloading taro. Moreover, the entire harvesting process is simple to operate and highly efficient. Taking efficiency, convenience, and environmental protection into full consideration, the machine aims to provide a one-stop solution for taro growers, significantly reducing labor intensity, expediting and increasing harvesting efficiency, while also lowering production costs and achieving automated production in this traditional industry.

[0067] In addition, when using the above-mentioned root crop harvester for digging, the breakage rate of taro is as low as 2%, which is extremely low. This allows the taro to be preserved intact, achieving high taro yield and low breakage rate, and ensuring the quality of the taro. The conveying mechanism 51 and the roller 61 basically do not squeeze or impact the taro, thereby ensuring the safety of the taro during transportation, minimizing loss and waste during transportation, and providing a high degree of protection for the taro. The conveying capacity is large and fully automated. After the conveying process is completed, the taro is automatically transported to the collection and dumping device 70. When the collected taro reaches a certain weight, the collection and dumping device 70 will flip under motor control and dump the taro to a designated location.

[0068] The above-mentioned root crop digging machine has a series of advantages such as high applicability, low cost, simple operation, safety and reliability, etc. It meets the needs of taro harvesting very well and has great market development potential.

[0069] like Figure 4 As shown, the gathering device 30 includes a first side plate 31 and a second side plate 32 that are arranged opposite to each other. The front end of the first side plate 31 and the front end of the second side plate 32 together form a trumpet-shaped opening. When the trumpet-shaped opening is aligned with the stems on the ground, the frame 10 continues to move and can gather and clamp the stems on the ground. The first side plate 31 is fixedly mounted on the frame 10, and the second side plate 32 is mounted on the frame 10 through an elastic bracket 33 so that the distance between the first side plate 31 and the second side plate 32 can be adjusted. The elastic bracket 33 plays the role of contraction and expansion, and can adapt to the gathering of stems of different thicknesses. Among them, the elastic bracket 33 includes a sliding rod mounted on the frame 10 and a spring sleeved outside the sliding rod, and a mounting frame 321 is provided on the second side plate 32 (see Figure 5), the outer side plate of the mounting frame 321 is also sleeved on the slide bar and connected to the end of the spring. When the stalk to be harvested is thicker, the stalk presses the second side plate 32, causing the second side plate 32 to move along the slide bar away from the first side plate 31, thereby squeezing the spring. When the thicker stalk is collected, the second side plate 32 can be reset under the action of the spring. The collecting device 30 is trumpet-shaped. Since the taro leaves are in a scattered state in the field, collecting them when harvesting is beneficial to cutting and collecting the stalks. The trumpet-shaped collecting device 30 can adapt to taro stalks of different thicknesses because of the spring, and can also efficiently collect the taro leaves.

[0070] like Figure 7 As shown, the cutting device 40 includes a saw blade drive assembly 41 and a saw blade 42 slidably mounted below the retraction device 30. The saw blade drive assembly 41 is capable of driving the saw blade 42 to perform linear reciprocating motion along the transverse direction of the frame 10 (the transverse direction herein refers to the horizontal direction perpendicular to the forward direction of the frame 10). The saw blade drive assembly 41 comprises a motor, a rotating disc, and a rocker. The rotating disc is driven by the motor. One end of the rocker is hinged to an eccentric position near the edge of the rotating disc and the other end is hinged to the saw blade 42, thereby forming a crank-connecting rod mechanism. The frame 10 is also provided with a transversely extending guide plate. The saw blade 42 can reciprocate along the guide plate 43. The guide plate 43 may also include a slot into which a portion of the saw blade 42 can be inserted, thereby limiting the direction and distance of movement of the saw blade 42. When the motor drives the rotating disc to rotate, the rocker generates reciprocating motion, thereby driving the saw blade 42 to reciprocate, thereby cutting the stems that have entered the retraction device 30. In a more preferred embodiment, saw teeth may also be provided at positions of the guide plate 43 corresponding to the saw teeth on the saw blade 42 , thereby improving the cutting effect and speed.

[0071] In addition to integrating cutting, digging, conveying and collecting functions, see Figure 2 、 Figure 4 and Figure 7 The root crop harvester also includes a stem conveyor 80 located at the rear end of the collecting device 30. The stem conveyor 80 includes a conveying mechanism 81 and an auxiliary mechanism 82, which are spaced apart on the frame 10. A transverse conveying channel 83 is formed between the conveying mechanism 81 and the auxiliary mechanism 82. The inlet end of the conveying channel 83 faces the rear end of the collecting device 30, and the outlet end of the conveying channel 83 faces the side of the frame 10. This allows the cut stems to be conveyed to the side of the frame 10 and transported to the ground. As the machine moves forward, the stems can be neatly arranged on one side for easy collection, making it easier for farmers to recycle and reuse the stems.

[0072] Among them, see again Figure 7The conveyor mechanism 81 includes a conveyor pulley assembly 811 and a conveyor belt drive assembly 812 for driving the conveyor pulley assembly 811. The conveyor belt drive assembly 812 includes a motor and a gear set. A gear is mounted on the pulley shaft of the conveyor pulley assembly 811, which meshes with the output gear of the gear set. When the motor drives the gear set to rotate, it drives the conveyor pulley assembly 811. The working surface of the conveyor belt of the conveyor pulley assembly 811 is perpendicular to the horizontal plane, and the conveyor belt runs from the entrance end of the conveyor channel 83 to the exit end of the conveyor channel 83. The auxiliary mechanism 82 includes a plurality of auxiliary rollers arranged in a row. The auxiliary rollers are rotatably mounted on the frame 10, and the axes of the auxiliary rollers are all perpendicular to the horizontal plane. The conveyor belt and the row of auxiliary rollers form the conveyor channel 83. After the cut stalks are fed into the entrance end of the conveyor channel 83 from the rear end of the gathering device 30, they can continue to move horizontally with the conveyor belt, being transferred to the side of the frame 10 and falling from the exit end of the conveyor channel 83 to the side of the frame 10.

[0073] In a preferred embodiment, in order to ensure a stable transfer effect, there are multiple conveyor belts, which are spaced apart and arranged parallel to each other. Figure 7 , two conveyor belts are distributed at the upper and lower ends, corresponding to the upper and lower parts of the stems, so that force can be applied to the upper and lower parts of the stems at the same time to improve the stability of the transfer process. Figure 8 The outer circumference of the auxiliary roller is provided with a plurality of toggling ribs 821 at intervals. The extending direction of the toggling ribs 821 is parallel to the axis of the auxiliary roller. The side of the toggling ribs 821 away from the auxiliary roller is bent and tilted in the direction of rotation of the auxiliary roller. When the stem is driven by the conveyor belt to move laterally, the rotating auxiliary roller will also rotate in coordination to provide auxiliary support for the stem. The bent end of the toggling rib 821 can also toggle the stem while contacting the stem, allowing the stem to move more smoothly toward the exit end of the conveying channel 83. In a preferred embodiment, the auxiliary rollers can also be driven by a motor, and the two auxiliary rollers rotate synchronously, and then matched with the conveying speed of the conveyor belt, so as to have good stability during operation and maintain the consistency of the transmission effect during long-term transmission.

[0074] See also Figure 6In a preferred embodiment, the conveying mechanism 51 includes a mounting bracket 511 whose rear end is hinged to the frame 10, a conveyor belt pulley set 512 provided on the mounting bracket 511, and a conveyor belt drive assembly 513 (e.g., a servo motor) that drives the conveyor belt pulley set 512. When the servo motor is started, the inclined conveyor belt can transport the taro from front to back and from bottom to top. The shovel 52 is provided at the front end of the mounting bracket 511. The outer surface of the conveyor belt of the conveyor belt drive assembly 513 is provided with a plurality of protrusions or protrusions 5131 at intervals to prevent the roots on the conveyor belt from rolling forward. Side baffles 514 are also provided on both sides of the conveyor belt on the mounting bracket 511 to prevent the taro from rolling off from both sides. The conveyor belt can be a mesh chain conveyor belt, and the dirt on the surface of the taro can fall through the gaps in the mesh chain conveyor belt.

[0075] The lifting mechanism 53 is a telescopic rod (e.g., a pneumatic cylinder or an electric push rod), one end of which is hinged to the frame 10 and the other end is hinged to the front end of the mounting bracket 511. In a more preferred embodiment, the root crop harvester may also include a visual detection device (e.g., a camera). When the root crop harvester detects taro with cut stems in the soil, the traveling device coordinates to adjust the forward direction of the machine and the electric push rod slowly lowers the shovel 52. As the machine advances, the shovel 52 digs the taro out of the soil.

[0076] See also Figures 9 to 12 The frame 10 is provided with a pair of limiting brackets 63. Each limiting bracket 63 includes a pair of mounting seats 631, a mounting rod 632 mounted between the pair of mounting seats 631, and a limiting arc 633 disposed on the mounting rod 632. The limiting arcs 633 on the pair of limiting brackets 63 are arranged relative to the roller 61. The curvature of the limiting arcs 633 matches the curvature of the roller 61 so as to radially limit the roller 61. That is, the pair of limiting arcs 633 clamp the roller 61 but do not affect the rotation of the roller 61. The roller 61 can rotate between the opposing limiting arcs 633. The mounting seats 631 can be mounted on the frame 10 by fasteners (screws or bolts, etc.). The corresponding positions of the frame 10 are provided with waist-shaped holes. When the fasteners are loosened, the mounting seats 631 can be displaced a certain distance (corresponding to the limiting distance of the waist-shaped holes) in the lateral direction of the frame 10 to facilitate the disassembly and assembly of the roller 61. For example, when the roller 61 needs to be disassembled, the fasteners are loosened and the paired mounting seats 631 are moved away from each other, thereby removing the roller 61. When the roller 61 needs to be installed, the roller 61 is first placed in a predetermined position, and the mounting seats 631 are moved to allow the paired limiting arcs 633 to clamp the roller 61, and finally the fasteners are tightened to complete the installation of the roller 61. Figures 9 to 12A pair of limiting arcs 633 are correspondingly arranged on the middle roller 61. In a preferred embodiment, multiple limiting arcs 633 can also be arranged at intervals on the mounting rod 632, thereby forming multiple pairs of limiting arcs 633 distributed at intervals along the axial direction of the roller 61 to improve the reliability of the installation of the roller 61.

[0077] Furthermore, a gear ring 613 is formed on the outer surface of the drum 61. The drum drive assembly 62 includes a motor 621 and a gear set 622 connected to the output shaft of the motor 621. The output gear of the gear set 622 can mesh with the gear ring 613. The output gear shaft is rotatably mounted on the mounting seat 631, and the mounting rod 632 is parallel to the output gear shaft. In order to ensure the stability of the drum 61 during rotation, see Figure 10 The roller drive assembly 62 also includes a rotatable auxiliary gear 623, which can engage with the ring gear 613. The mounting rod 632 is parallel to the axle of the auxiliary gear 623, and the roller 61 is located between the auxiliary gear 623 and the output gear. The auxiliary gear 623 and the output gear support the rotating roller 61 from both sides of the roller 61.

[0078] In a preferred embodiment, Figure 9 and Figure 10 As shown, the side of the limiting arc 633 near the roller 61 is formed with a groove, and the outer surface of the roller 61 is formed with an annular ridge 614. The annular ridge 614 can be inserted into the groove to form an axial limit. When the roller 61 rotates, the annular ridge 614 slides in the groove. The cooperation between the annular ridge 614 and the groove can provide both axial limit and circumferential guidance, which is a very clever structure. Alternatively, the side of the limiting arc 633 near the roller 61 is formed with a convex ridge, and the outer surface of the roller 61 is formed with an annular groove. The convex ridge can be inserted into the annular groove to form an axial limit. When the roller 61 rotates, the convex ridge slides in the annular groove.

[0079] Also, see again Figure 12 The diameter of the drum 61 gradually decreases from the inlet end to the outlet end, so that the taro can be gradually gathered and collected during the screening and transportation process until it enters the collecting and dumping device 70.

[0080] like Figures 13 to 15As shown, the collection and dumping device 70 includes an outer frame 71 disposed on the frame 10, an inner frame body 72 hingedly connected to the outer frame 71, and a dumping drive assembly 73 for driving the inner frame body 72 to dump. The outer frame 71 includes a first side wall 711 and an oppositely disposed second side wall 712 and a third side wall 713. The first side wall 711 connects the first end of the second side wall 712 and the first end of the third side wall 713. The second side wall 712 is provided with a material receiving notch 7121, which corresponds to the outlet end of the drum 61. The inner frame body 72 includes a bottom plate 721 and a fourth side wall 722. One end of the bottom plate 721 is connected to the bottom end of the fourth side wall 722, and the bottom end of the fourth side wall 722 is hinged to the second end of the second side wall 712 and the second end of the third side wall 713. When the collecting and dumping device 70 is in the collecting state, the bottom plate 721 blocks the bottom of the outer frame 71, and the fourth side wall 722 blocks the second end of the second side wall 712 and the second end of the third side wall 713; when the dumping drive assembly 73 drives the inner frame 72 to rotate based on the hinge axis, the fourth side wall 722 flips outward, so that the collected taro can be dumped to the side of the frame 10, and after the dumping is completed, the inner frame 72 is driven to rotate in the opposite direction to prepare for subsequent taro collection.

[0081] Among them, the tipping drive assembly 73 includes a rack rail 731 (whose cross section is T-shaped) arranged on the outside of the third side wall 713, a moving mechanism 732 capable of moving on the rack rail 731, a connecting seat 734 arranged in the upper middle part of the fourth side wall 722, and a connecting rod 733 with one end hinged to the moving mechanism 732 and the other end hinged to the connecting seat 734. The moving mechanism 732 includes a shell and a motor and a gear set arranged in the shell. The limiting groove on the shell is adapted to the T-shaped cross section of the rack rail 731 (similar to the matching method of the dovetail groove, the relevant structure is simplified in the figure), and the gear set in the shell can engage with the rack on the rack rail 731. When the motor is running, the moving mechanism 732 can move on the rack rail 731. In addition, in a more preferred embodiment, the rack rail 731 and the moving mechanism 732 can also be replaced by an existing electric slide, which together with the connecting rod 733 constitutes a crank slider mechanism, see Figure 15 When the crank slider mechanism is started, it can drive the inner frame 72 to rotate based on the hinge axis, thereby realizing the dumping of the taro.

[0082] In a preferred embodiment, a gravity sensor can be provided on the bottom plate 721. When the collecting and dumping device 70 reaches the maximum load limit, the gravity sensor sounds an alarm and the inner frame 72 uses a crank slider mechanism to dump the taro to a designated location. In addition, the inner frame 72 is also provided with a pair of side guard plates 723 (see Figure 13), side guard plates 723 are located on opposite sides of the fourth side wall 722. The side guard plates 723 are perpendicular to the bottom plate 721 and the fourth side wall 722. When the inner frame 72 is turned over to dump the taro, the side guard plates 723 can prevent the taro from rolling down the sides of the fourth side wall 722. At this time, the top of the fourth side wall 722 is tilted downward, and the taro will only roll down along the tilt direction of the fourth side wall 722.

[0083] The above-mentioned root crop digging machine is suitable for digging taro in small farmlands. It is a machine that integrates the harvesting of stems, digging and collecting of taro. It has a low taro damage rate, high harvesting efficiency, and can also improve the reuse rate of stems, which has great market promotion value. In addition, the above-mentioned root crop digging machine can also be preferably equipped with a wireless module and cooperate with the control module to remotely control the various devices of the whole machine. Based on radio remote sensing technology, it is simple to operate and has good maneuverability, making it very suitable for digging taro in small farmlands. When in use, the staff only needs to remotely control it next to the farmland. After completing the taro digging operation, the taro stems can be recovered with manual assistance. It can be used mobile and conveniently.

[0084] 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.

[0085] 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.

[0086] 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.

[0087] 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.

[0088] 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 root crop digging machine, characterized in that: It includes: Frame (10); A walking device (20), the walking device (20) being arranged at the bottom of the frame (10); A gathering device (30), the gathering device (30) being arranged at the front end of the frame (10) so as to be able to gather and clamp the stems on the ground; a cutting device (40), the cutting device (40) being located below the gathering device (30) so as to be able to cut the clamped stems; An excavating and conveying device (50) comprises a conveying mechanism (51) whose rear end is hinged to the frame (10), a shovel (52) provided at the front end of the conveying mechanism (51), and a lifting mechanism (53) for driving the shovel (52) to move up and down; when the lifting mechanism (53) drives the shovel (52) to move down, the shovel (52) can excavate rhizomes in the soil, and the conveying mechanism (51) can transport the excavated rhizomes backward; A drum mud screening device (60), comprising a drum (61) rotatably arranged on the frame (10) and a drum driving assembly (62) driving the drum (61) to rotate, the inlet end of the drum (61) facing the rear end of the conveying mechanism (51), the outlet end of the drum (61) facing the rear end of the frame (10), a plurality of mud leakage holes (611) being provided on the drum (61), and spiral blades (612) being provided on the inner surface of the drum (61), the rotating drum (61) being capable of screening mud from rhizomes when conveying rhizomes; A collecting and dumping device (70) is provided at the rear end of the frame (10) so as to collect the roots and rhizomes after the mud is screened and dump them at intervals.

2. The root crop digging machine according to claim 1, characterized in that: The gathering device (30) comprises a first side plate (31) and a second side plate (32) which are arranged opposite to each other, wherein the front end of the first side plate (31) and the front end of the second side plate (32) together form a trumpet-shaped opening so as to be able to gather and clamp the stems on the ground; the first side plate (31) is fixedly mounted on the frame (10), and the second side plate (32) is mounted on the frame (10) via an elastic bracket (33) so as to be able to adjust the distance between the first side plate (31) and the second side plate (32).

3. The root crop digging machine according to claim 1, characterized in that: The cutting device (40) comprises a saw blade drive assembly (41) and a saw blade (42) slidably mounted below the retracting device (30), wherein the saw blade drive assembly (41) is capable of driving the saw blade (42) to perform linear reciprocating motion in the transverse direction of the frame (10).

4. The root crop digging machine according to claim 1, characterized in that: The root crop harvester further comprises a stem conveying device (80) located at the rear end of the gathering device (30), the stem conveying device (80) comprising a conveying mechanism (81) and an auxiliary mechanism (82) arranged on the frame (10) at relative intervals, a transverse conveying channel (83) being formed between the conveying mechanism (81) and the auxiliary mechanism (82), the inlet end of the conveying channel (83) being connected to the rear end of the gathering device (30), and the outlet end of the conveying channel (83) being directed toward the side of the frame (10), so as to be able to convey the cut stems to the side of the frame (10).

5. The root crop digging machine according to claim 4, characterized in that: The conveying mechanism (81) comprises a conveyor belt wheel assembly (811) and a conveyor belt driving assembly (812) for driving the conveyor belt wheel assembly (811); the working surface of the conveyor belt of the conveyor belt wheel assembly (811) is perpendicular to the horizontal plane, and the conveying direction is from the inlet end of the conveying channel (83) toward the outlet end of the conveying channel (83); The auxiliary mechanism (82) includes a plurality of auxiliary rollers arranged in a row, the auxiliary rollers are rotatably mounted on the frame (10) and the axes of the auxiliary rollers are perpendicular to the horizontal plane; the conveying channel (83) is formed between the conveyor belt and the auxiliary rollers arranged in a row.

6. The root crop digging machine according to claim 5, characterized in that: There are multiple conveyor belts, and the multiple conveyor belts are spaced apart and arranged parallel to each other. A plurality of toggling edges (821) are arranged at intervals on the outer peripheral surface of the auxiliary roller, and the extending direction of the toggling edges (821) is parallel to the axis of the auxiliary roller; the side of the toggling edges (821) away from the auxiliary roller is bent and tilted toward the rotation direction of the auxiliary roller.

7. The root crop digging machine according to any one of claims 1 to 6, characterized in that: The conveying mechanism (51) comprises a mounting bracket (511) whose rear end is hinged to the frame (10), a conveyor belt wheel group (512) arranged on the mounting bracket (511), and a conveyor belt driving assembly (513) for driving the conveyor belt wheel group (512); the shovel (52) is arranged at the front end of the mounting bracket (511); a plurality of protrusions or protrusions are arranged at intervals on the outer surface of the conveyor belt of the conveyor belt driving assembly (513) to prevent the roots on the conveyor belt from rolling forward; side baffles (514) are also arranged on the mounting bracket (511) at positions on both sides of the conveyor belt; The lifting mechanism (53) is a telescopic rod, one end of which is hinged to the frame (10) and the other end of which is hinged to the front end of the mounting bracket (511).

8. The root crop digging machine according to any one of claims 1 to 6, characterized in that: The frame (10) is provided with a pair of limiting brackets (63), each of the limiting brackets (63) comprising a pair of mounting seats (631), a mounting rod (632) mounted between the pair of mounting seats (631), and a limiting arc (633) arranged on the mounting rod (632); the limiting arcs (633) on the pair of limiting brackets (63) are arranged relative to the roller (61); the curvature of the limiting arcs (633) matches the curvature of the roller (61) so as to radially limit the roller (61); and the roller (61) can rotate between the relative limiting arcs (633); A gear ring (613) is formed on the outer surface of the roller (61), and the roller drive assembly (62) includes a motor (621) and a gear set (622) connected to the output shaft of the motor (621), and the output gear of the gear set (622) can mesh with the gear ring (613).

9. The root crop digging machine according to claim 8, characterized in that: A groove is formed on one side of the limiting arc (633) close to the roller (61), and an annular ridge (614) is formed on the outer surface of the roller (61). The annular ridge (614) can be inserted into the groove, and when the roller (61) rotates, the annular ridge (614) slides in the groove; Alternatively, a ridge is formed on one side of the limiting arc (633) close to the roller (61), and an annular groove is formed on the outer surface of the roller (61), and the ridge can be inserted into the annular groove. When the roller (61) rotates, the ridge slides in the annular groove.

10. The root crop digging machine according to any one of claims 1 to 6, characterized in that: The collecting and dumping device (70) comprises an outer frame (71) arranged on the frame (10), an inner frame (72) hingedly connected to the outer frame (71), and a dumping drive assembly (73) for driving the inner frame (72) to dump; The outer frame (71) comprises a first side wall (711) and a second side wall (712) and a third side wall (713) arranged opposite to each other, wherein the first side wall (711) connects the first end of the second side wall (712) and the first end of the third side wall (713); a material receiving slot (7121) is provided on the second side wall (712), and the material receiving slot (7121) corresponds to the outlet end of the roller (61); The inner frame (72) comprises a bottom plate (721) and a fourth side wall (722), one end of the bottom plate (721) is connected to the bottom end of the fourth side wall (722), and the bottom end of the fourth side wall (722) is hinged to the second end of the second side wall (712) and the second end of the third side wall (713); When the collecting and dumping device (70) is in a collecting state, the bottom plate (721) blocks the bottom of the outer frame (71), and the fourth side wall (722) blocks the second end of the second side wall (712) and the second end of the third side wall (713); when the dumping drive assembly (73) drives the inner frame (72) to rotate based on the hinge axis, the fourth side wall (722) flips outward.

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