A stem and leaf harvesting machine for sweet potato

Abstract

The utility model provides a kind of food leaf sweet potato stem and leaf harvester, including leaf separating device, cutting mechanism, conveying device, air injection device, height and slope adjusting device, electric walking chassis and PC industrial control device;The leaf separating device is located in front of vehicle body, and is installed on cutting mechanism;Air injection device is located behind leaf separating device, and is installed on cutting mechanism;The conveying device is located below vehicle body, and is located behind cutting mechanism, height and slope adjusting device are installed below conveying device, and height and slope adjusting device are installed on electric walking chassis;The PC industrial control device is connected with leaf separating device, cutting mechanism, conveying device, air injection device and height and slope adjusting device respectively.The utility model reduces the damage rate of food leaf sweet potato stem and leaf harvesting, improves the quality and efficiency of harvesting.

Description

Technical Field

[0001] This utility model belongs to the field of agricultural harvesting machinery technology, and specifically relates to a harvester for the stems and leaves of sweet potatoes. Background Technology

[0002] As a highly nutritious and uniquely flavorful vegetable, the stems and leaves of leafy sweet potatoes have seen increasing market demand in recent years, driving the large-scale development of their cultivation. However, incompatible with industrialized cultivation, the harvesting process still largely relies on traditional manual labor. Currently, the harvesting of leafy sweet potato stems and leaves mainly depends on manual labor using sickles or scissors to cut, gather, and pack each plant individually. This method not only requires workers to bend over for extended periods, resulting in extremely high labor intensity, but also has very low harvesting efficiency and high labor costs, severely restricting the scale benefits and development speed of the leafy sweet potato industry.

[0003] To change this backward situation, some technicians have attempted to apply existing general-purpose forage or some leafy vegetable harvesters to the harvesting of sweet potato stems and leaves. These machines typically use mechanical reels to hold and gather the stems, reciprocating cutters to cut them, and then a chain or belt conveyor to transport the material. While this approach has replaced manual labor to some extent, its effectiveness is not ideal because it is not designed specifically for the characteristics of sweet potato stems and leaves. Sweet potato stems and leaves are delicate, and traditional rigid reels and mechanical conveyor belts easily cause physical damage such as squeezing, rubbing, and tearing during operation, resulting in a high breakage rate and severely impacting their commercial value as fresh vegetables.

[0004] Based on the above problems, existing technologies still have significant shortcomings in the harvesting of sweet potato stems and leaves: First, there is a lack of low-damage operation methods, especially in the conveying stage. The problem of damage to delicate stems and leaves caused by traditional mechanical contact conveying has not been effectively solved. Second, the level of automation and intelligence is low. Existing machinery is mostly of fixed structure and cannot adjust the leaf separation width and operating height according to the different ridge widths and growth of crops in the field, resulting in poor operational adaptability, high missed harvesting rate, or a large amount of impurities. Third, the terrain adaptability is poor. Traditional harvester chassis and operating components lack overall posture adjustment functions, resulting in poor harvesting stability when operating in complex terrains such as hills and slopes. Utility Model Content

[0005] To address the aforementioned technical problems, this utility model provides a harvester for the stems and leaves of leafy sweet potatoes, which reduces the damage rate of the stems and leaves during harvesting and improves the quality and efficiency of harvesting.

[0006] Note that the description of these objectives does not preclude the existence of other objectives. One embodiment of this invention does not need to achieve all of the above objectives. Objectives other than those described above can be extracted from the description, drawings, and claims.

[0007] This utility model achieves the above-mentioned technical objectives through the following technical means.

[0008] A leaf-eating sweet potato stem and leaf harvester includes a leaf-splitting device, a cutting mechanism, a conveying device, an air jet device, a height and slope adjustment device, an electric walking chassis, and a PC industrial control device.

[0009] The leaf-splitting device is located at the front of the vehicle body and is mounted on the cutting mechanism; the jet device is located behind the leaf-splitting device and is mounted on the cutting mechanism; the conveying device is located below the vehicle body and behind the cutting mechanism, and a height and slope adjustment device is installed below the conveying device and is mounted on the electric walking chassis.

[0010] The PC industrial control device is connected to the leaf-splitting device, the cutting mechanism, the conveying device, the jetting device, and the height and slope adjustment device, respectively.

[0011] In the above scheme, the leaf-splitting device includes a long leaf-splitting support, a short leaf-splitting support, a leaf-splitting support plate, several leaf-splitting mechanisms, an image acquisition camera, a stepper motor driver, and a drive switching and central control center.

[0012] The short leaf support is installed on the side of the long leaf support, and the upper leaf support plate is installed on the long leaf support and the short leaf support to form an overall frame.

[0013] The leaf-splitting mechanism is mounted on a long leaf-splitting support. Each leaf-splitting mechanism includes a high-torque stepper motor, rotary gear I, rotary gear II, rotary gear III, a left leaf-splitting rod, a flow-dividing rod, and a right leaf-splitting rod. The high-torque stepper motor is connected to rotary gear III via a shaft, and rotary gear III meshes with rotary gear II, while rotary gear II meshes with rotary gear I. Rotary gear I is connected to the top end of the left leaf-splitting rod, and rotary gear II is connected to the top end of the right leaf-splitting rod. The left and right leaf-splitting rods are mounted on the long leaf-splitting support via bearings. The high-torque stepper motor drives rotary gear II and rotary gear I to rotate the right and left leaf-splitting rods in opposite directions, thereby changing the leaf-splitting gap between adjacent leaf-splitting mechanisms. The image acquisition camera, stepper motor driver, drive switch, and central control center are mounted on the upper plate of the leaf-splitting support. The image acquisition camera and stepper motor driver are both connected to the drive switch and central control center, which is connected to an automated PC industrial control device.

[0014] Furthermore, both the left and right leaf rods include a first straight rod, a second straight rod, a third straight rod, a curved ring, a fourth straight rod, a fifth straight rod, and a sixth straight rod connected in sequence.

[0015] The first straight rod is vertically mounted on the leaf-splitting support, with a length of approximately 150–160 mm. The second straight rod is inclined forward, forming an angle of 145–150° with the first straight rod, and has a length of 120–140 mm. The third straight rod is parallel to the first straight rod, with a length of 30–40 mm and a bending radius of 14–18 mm. The fourth straight rod is perpendicular to the third straight rod and located behind it, with a length of 110–120 mm. The fifth straight rod is inclined outward, forming an angle of 155–160° with the fourth straight rod, and has a length of 70–80 mm. The sixth straight rod is parallel to the fourth straight rod, with a length of 40–50 mm. The opening and closing angle range formed by the left and right leaf-splitting rods is 30–80°.

[0016] In the above scheme, the cutting mechanism includes a cutter drive motor, a left support mounting plate, a cutter structure, a right support mounting plate, an adjustable movable square tube, an adjustable fixed square tube bracket, and a drive motor driver;

[0017] The cutter drive motor is mounted on the adjustable and fixed square tube bracket, and the cutter drive motor is connected to the cutter structure; the left support mounting plate and the right support mounting plate are symmetrically arranged to form a mounting frame, and the cutter structure is located between the left support mounting plate and the right support mounting plate.

[0018] The leaf-splitting device is installed at the front end of the left support mounting plate and the right support mounting plate; the rear ends of the left support mounting plate and the right support mounting plate are respectively connected to the adjustable movable square tube, which is sleeved on the adjustable fixed square tube bracket and can slide up and down along the adjustable fixed square tube bracket to adjust its height.

[0019] In the above scheme, the conveying device includes a lower conveying support, a channel classification support, a conveyor belt, a lower transmission rod of the conveyor belt, a conveyor transmission motor, a reducer, an upper conveying support, an upper conveyor belt tensioning frame, an upper transmission rod of the conveyor belt, a conveyor belt transmission wheel, a lower conveyor belt tensioning frame, and a bearing seat;

[0020] The lower conveyor support and upper conveyor support are arranged in parallel and installed at the front and rear ends of the conveyor frame, respectively. Multiple channel sorting supports are vertically arranged between the lower and upper conveyor supports. The lower conveyor support, channel sorting supports, and upper conveyor support form the overall frame structure of the conveying device and are installed above the cutting mechanism. The lower conveyor belt drive rod is installed on the cutting mechanism, near the lower conveyor support end, and a driven pulley is provided on the lower conveyor belt drive rod. The upper conveyor belt drive rod enters the upper conveyor support end. The conveyor drive motor, through a reducer, connects to the upper conveyor belt drive rod and drives the conveyor belt drive wheel on the upper conveyor belt drive rod to rotate, thus driving the conveyor belt transport. The upper and lower conveyor belt tensioning frames are respectively provided with elongated through holes. Both ends of the upper conveyor belt drive rod are respectively installed in the elongated through holes via bearing seats and can be slidably installed in the elongated through holes using bolts to tension the conveyor belt. The conveyor drive motor is connected to an automated PC industrial control device.

[0021] In the above scheme, the jet device includes a conical air guide pipe, a multi-pass jet pipe, a corner connecting pipe, a connecting straight pipe, an air compressor jet, and a jet drive device;

[0022] The conical air guide tube is installed on the cutting mechanism. The conical air guide tube is vertically connected to multiple multi-channel jet pipes. The smaller diameter end of the conical air guide tube is connected to one end of the connecting straight pipe through a corner connecting pipe. The other end of the connecting straight pipe is connected to the air compressor jet. The air compressor jet is connected to the jet drive device through a line. The jet drive device is connected to the automated PC industrial control device through a line.

[0023] The conical air guide tube is connected to the multi-pass jet pipe, and the conical air guide tube is connected to the air compressor jet through the corner connecting pipe and the connecting straight pipe.

[0024] In the above scheme, the height and slope adjustment device includes a right slope adjustment slide rail, a right lower slope adjustment slider, an overall lower support, an upper and lower hinge support base, a left lower slope adjustment slider, a left slope adjustment slide rail, an upper and lower hydraulic support rod, a left upper slope adjustment slider, an angle hinge support base, an angle adjustment hydraulic support rod, an overall upper support I, a right upper slope adjustment slider, and an overall upper support II.

[0025] The overall lower support is installed at the end of the conveyor frame of the conveying device closest to the cutting mechanism. The overall upper support I and overall upper support II are arranged in parallel and installed at the other end of the conveyor frame of the conveying device furthest from the cutting mechanism. The slope adjustment right slide rail and slope adjustment left slide rail are arranged in parallel, with one end of the slope adjustment right slide rail and slope adjustment left slide rail respectively connected to the chassis frame of the electric walking chassis, and the other ends of the slope adjustment right slide rail and slope adjustment left slide rail respectively installed between the overall upper support I and overall upper support II. The slope adjustment lower right slider and slope adjustment upper right slider are respectively sleeved on the slope adjustment right slide rail, and the slope adjustment upper right slider is connected to the overall upper support I and overall upper support II. The slope adjustment lower right slider is connected to the right base through the right connecting rod, and the right base is installed on the overall lower support.

[0026] The slope adjustment lower left slider and slope adjustment upper left slider are respectively sleeved on the slope adjustment left slide rail, and the slope adjustment upper left slider is connected to the overall upper bracket I and the overall upper bracket II; the slope adjustment upper left slider is connected to the left base through the left connecting rod, and the left base is installed on the overall lower bracket;

[0027] The bottom of the vertically adjustable hydraulic support rod is connected to the chassis frame via a vertically hinged support base, and the top of the vertically adjustable hydraulic support rod is connected to the overall upper bracket I; the bottom of the angle-adjustable hydraulic support rod is connected to the chassis frame via an angle-adjustable support base, and the top of the angle-adjustable hydraulic support rod is hinged to the overall upper bracket II.

[0028] Both the vertical adjustment hydraulic support rod and the angle adjustment hydraulic support rod are connected to the hydraulic pump, which is connected to the automated PC industrial control device.

[0029] The drive switching and central control center have a built-in gyroscope to monitor the angle change signal of the whole machine caused by the change of ground slope, and transmit it to the automated PC industrial control device.

[0030] In the above solution, the electric walking chassis includes a front walking axle, front walking wheels, a vehicle body frame, rear walking wheels, a stem and leaf collection platform, a collection box, a motor battery, and a walking motor;

[0031] The front wheels are mounted on the front axle; the front end of the vehicle body support is connected to the front axle 601, the rear wheels are mounted on both sides of the vehicle body support, the stem and leaf collection platform is mounted on the rear end of the vehicle body support, and the collection box is mounted on the stem and leaf collection platform.

[0032] The motor battery and the walking motor are located on the vehicle body frame; the motor battery is connected to the walking motor, and the walking motor is connected to the rear walking wheel.

[0033] In the above scheme, the automated PC industrial control device includes a control center, and control line interfaces connected to the control center, power indicator lights, machine parameter display screens, power switches, blade width adjustment knobs, body angle adjustment knobs, machine body height adjustment knobs, body speed adjustment knobs, conveyor speed adjustment knobs, jet speed adjustment knobs, emergency stop knobs, and wireless data network transmission antennas.

[0034] In the above scheme, a handle is provided at the rear of the vehicle body, and the PC industrial control device is installed on the handle.

[0035] Compared with the prior art, the beneficial effects of this utility model are:

[0036] 1. This invention utilizes a leaf-splitting device to identify the crop density of sweet potato stems and leaves in each row in real time. This allows for subsequent adjustment of the opening and closing angle of the leaf-splitting rod, enabling the harvester to adapt to fields of different planting sizes and preventing missed harvests or damage to stems and leaves due to a mismatch between the leaf-splitting width and the ridge width. The real-time adjustable leaf-splitting width ensures precise crop alignment, significantly improving harvesting accuracy and automation.

[0037] 2. This invention employs a jet-air device, using high-speed airflow as a non-contact thrust, replacing traditional mechanical conveying. This flexible conveying method allows for precise adjustment of the jet volume according to crop density, fundamentally avoiding physical damage such as squeezing, rubbing, and tearing of delicate stems and leaves during conveying, maximizing the preservation of stem and leaf integrity and commercial quality, and ensuring high-quality harvest.

[0038] 3. This utility model can identify the crop height of each row of sweet potato stems and leaves in real time according to the leaf-separating device, and adjust the working height of the cutter and the air jet device as a whole through the height and slope adjustment device, so that the harvester can adapt to the stems and leaves of sweet potatoes at different growth stages or different varieties, ensuring that the cutter is always in the optimal position for cutting, and the air jet can also efficiently act on the cut stems and leaves, ensuring universality for crops with different growth conditions and consistency of harvesting effect.

[0039] 4. The drive switching and central control center of this utility model have a built-in gyroscope to monitor the angle change signal of the whole machine caused by the change of ground slope, and transmit it to the automated PC industrial control device. When the angle change exceeds the preset value, the automated PC industrial control device controls the angle adjustment hydraulic support rod to adjust the angle between the conveyor frame of the conveying device and the ground, thereby adjusting the angle of the leaf splitting device, cutting mechanism, conveying device and jet device relative to the ground. It can effectively cope with complex terrains such as hills and slopes, so that the working parts always maintain parallel or optimal working posture with the crop row, ensuring the stability, continuity and consistency of harvesting operations under different slopes, and greatly expanding the applicability of the machine.

[0040] 5. This utility model achieves integrated and coordinated control of various functional modules through an automated PC industrial control device, and supports multi-channel parallel operation. This utility model links image recognition, leaf separation, cutting, air jetting, conveying, posture adjustment and walking speed as a whole, and through multi-channel design, it can complete the harvesting of multiple rows of crops at one time, which greatly improves the harvesting amount and operation efficiency per unit time. While achieving a high degree of intelligence of the whole machine, it significantly reduces labor costs and operation difficulty.

[0041] Note that the description of these effects does not preclude the existence of other effects. One embodiment of this invention does not necessarily have all the aforementioned effects. Effects other than those described above can be readily observed and extracted from the description, drawings, claims, etc. Attached Figure Description

[0042] Figure 1 This is a schematic diagram of the overall structure of a leaf-eating sweet potato stem and leaf harvester according to one embodiment of the present invention.

[0043] Figure 2 This is a schematic diagram of the leaf-splitting device according to one embodiment of the present invention.

[0044] Figure 3 This is a partial structural schematic diagram of the leaf-splitting device according to one embodiment of the present invention.

[0045] Figure 4 This is a schematic diagram of the opening and closing process of the leaf-splitting device according to one embodiment of the present invention.

[0046] Figure 5 This is a schematic diagram of the cutting mechanism according to one embodiment of the present invention.

[0047] Figure 6 This is a schematic diagram of the conveying device according to one embodiment of the present invention.

[0048] Figure 7 This is a schematic diagram of the transmission structure of a conveying device according to one embodiment of the present invention.

[0049] Figure 8 This is a schematic diagram of the jet device according to one embodiment of the present invention.

[0050] Figure 9 This is a schematic diagram of the height and slope adjustment device according to one embodiment of the present invention.

[0051] Figure 10 This is a schematic diagram illustrating the installation of the left slope adjustment slide rail, the right slope adjustment slide rail, and the up-down adjustment hydraulic support rod according to one embodiment of this utility model.

[0052] Figure 11This is a schematic diagram of the structure of an electric walking chassis according to one embodiment of the present invention. Figure 12 This is a schematic diagram of the panel of an automated PC industrial control device according to one embodiment of the present invention.

[0053] In the diagram: 1-Splitting device, 101-Splitting long support, 102-Splitting short support, 103-Splitting upper support plate, 104-Small high-torque stepper motor, 105-Rotating gear I, 106-Rotating gear II, 107-Rotating gear III, 108-Image acquisition camera, 109-Left splitting rod, 1010-Diverting rod, 1011-Right splitting rod, 1012-Stepper motor driver, 1013-Drive switching and central control center, 2-Cutting mechanism, 201-Cutter drive motor, 202-Left support mounting plate, 203-Cutter structure, 204-Right support mounting plate, 205-Adjustable movable square tube, 206-Adjusting... 207-Drive motor driver, 3-Conveying device, 301-Lower conveyor support, 302-Channel sorting support, 303-Conveyor belt, 304-Lower transmission rod of conveyor belt, 305-Conveyor drive motor, 306-Reducer, 307-Upper conveyor support, 308-Upper tensioning frame of conveyor belt, 309-Upper transmission rod of conveyor belt, 3010-Drive wheel of conveyor belt, 3011-Lower tensioning frame of conveyor belt, 3012-Bearing seat, 4-Jet device, 401-Conical air guide pipe, 402-Multi-channel jet pipe, 403-Corner connecting pipe, 404-Connecting straight pipe, 405-Air compressor jet, 4 06-Jet drive unit, 5-Height and slope adjustment device, 501-Right slope adjustment slide rail, 502-Right lower slope adjustment slider, 503-Integral lower support, 504-Upper and lower hinge support base, 505-Left lower slope adjustment slider, 506-Left slope adjustment slide rail, 507-Upper and lower hydraulic support rod, 508-Left upper slope adjustment slider, 509-Angle hinge support base, 5010-Angle adjustment hydraulic support rod, 5011-Integral upper support I, 5012-Right upper slope adjustment slider, 5013-Integral upper support II, 6-Electric travel chassis, 601-Traveling front axle, 602-Front travel wheel, 6 03-Car body support, 604-Rear traveling wheel, 605-Stem and leaf collection platform, 606-Collection box, 607-Motor battery, 608-Traveling motor, 7-Automation PC industrial control device, 701-Control circuit interface, 702-Power indicator light, 703-Machine parameter display screen, 704-Power switch, 705-Leaf width adjustment knob, 706-Car body angle adjustment knob, 707-Machine body height adjustment knob, 708-Car body speed adjustment knob, 709-Conveyor speed adjustment knob, 7010-Jet speed adjustment knob, 7011-Emergency stop knob, 7012-Wireless data network transmission antenna. Detailed Implementation

[0054] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0055] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "front," "rear," "left," "right," "upper," "lower," "axial," "radial," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0056] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0057] Figure 1The image shows a preferred embodiment of the sweet potato stem and leaf harvester of this utility model. The sweet potato stem and leaf harvester includes a leaf-splitting device 1, a cutting mechanism 2, a conveying device 3, an air jet device 4, a height and slope adjustment device 5, an electric walking chassis 6, and a PC industrial control device 7. The leaf-splitting device 1 is located at the front of the vehicle body and is mounted on the cutting mechanism 2. The air jet device 4 is located behind the leaf-splitting device 1 and is mounted on the cutting mechanism 2. The conveying device 3 is located below the vehicle body and behind the cutting mechanism 2. The height and slope adjustment device 5 is installed below the conveying device 3 and is mounted on the electric walking chassis 6. A handle is provided at the rear of the vehicle body, and the PC industrial control device 7 is mounted on the handle. The PC industrial control device 7 is connected to the leaf-splitting device 1, the cutting mechanism 2, the conveying device 3, the air jet device 4, and the height and slope adjustment device 5.

[0058] like Figure 2 , 3 As shown in Figure 4, the leaf-splitting device 1 includes a leaf-splitting long support 101, a leaf-splitting short support 102, a leaf-splitting support upper plate 103, several leaf-splitting mechanisms, an image acquisition camera 108, a stepper motor driver 1012, and a drive switching and central control center 1013.

[0059] The lobed short support 102 is installed on the side of the lobed long support 101, and the lobed support upper plate 103 is bolted to the lobed long support 101 and the lobed short support 102 to form an integral frame.

[0060] The leaf-splitting mechanism is mounted on the leaf-splitting long support 101. Each leaf-splitting mechanism includes the high-torque stepper motor 104, rotary gear I 105, rotary gear II 106, rotary gear III 107, left leaf-splitting rod 109, flow-dividing rod 1010, and right leaf-splitting rod 1011. The high-torque stepper motor 104 is connected to the rotary gear III 107 via a shaft, and the rotary gear III 107 meshes with the rotary gear II 106, while the rotary gear II 106 meshes with the rotary gear I 105. The rotary gear I 105 is connected to the top end of the left leaf-splitting rod 109, and the rotary gear II 106 is connected to the top end of the right leaf-splitting rod 1011. The left leaf-splitting rod 109 and the right leaf-splitting rod 1011... 011 is mounted on the leaf-splitting long support 101 via bearings; the high-torque stepper motor 104 drives the right leaf-splitting rod 1011 and the left leaf-splitting rod 109 to rotate in opposite directions via the drive gear II 106 and the drive gear I 105, thereby changing the leaf-splitting gap between adjacent leaf-splitting mechanisms; the image acquisition camera 108, the stepper motor driver 1012, and the drive switching and central control center 1013 are mounted on the leaf-splitting support upper plate 103, and the image acquisition camera 108 and the stepper motor driver 1012 are both provided with lines to connect to the drive switching and central control center 1013, and the drive switching and central control center 1013 is provided with lines to connect to the automated PC industrial control device 7;

[0061] The image acquisition camera 108 is used to acquire images of sweet potato stems and leaves in front of the harvester, identify the height and density of each row of sweet potato stems and leaves, and transmit the data to the drive switching and central control center 1013. The drive switching and central control center 1013 then transmits the signals to the automated PC industrial control device 7. The automated PC industrial control device 7 controls the spacing of the leaf separating device 1 and the airflow of the jet device 4 according to the density of the sweet potato stems and leaves. It also controls the height and slope adjustment device 5 to adjust the height of the leaf separating device 1, the cutting mechanism 2, the conveying device 3, and the jet device 4 relative to the ground according to the height of the sweet potato stems and leaves. This allows the harvester to adapt to different growth stages or different varieties of sweet potato stems and leaves, ensuring that the cutter is always in the optimal position for cutting. At the same time, the jet nozzles can also efficiently act on the cut stems and leaves, ensuring universality for different growth crops and consistency of harvesting results.

[0062] Specifically, the automated PC industrial control device 7 uses the curves obtained from prior experiments to determine the relationship between crop density and airflow magnitude of the jet device 4, and the curves to determine the relationship between crop density and the separation gap of the leaf-separating device 1.

[0063] In one specific embodiment of this utility model, the leaf-splitting device 1 is equipped with three image acquisition cameras 108, which can identify multiple rows of sweet potato stems and leaves, and upload the image data of each row to the automated PC industrial control device 7 for calculation through drive switching and central control center 1013, which can be used to adjust the leaf-splitting ridge width of each row of the leaf-splitting device 1.

[0064] In one specific embodiment of this utility model, the leaf-splitting device 1 is provided with a drive switching and central control center 1013 and a stepper motor driver 1012. The drive switching and central control center 1013 can upload data and is internally provided with multiple MOSFET switch circuits so that one driver can control each stepper motor driver 1012 individually through the switching circuit, so as to realize the control of the left leaf-splitting rod 109 and the right leaf-splitting rod 1011 in a single leaf-splitting mechanism.

[0065] like Figure 2 and 3As shown, both the left leaf-splitting rod 109 and the right leaf-splitting rod 1011 include a first straight rod, a second straight rod, a third straight rod, a curved ring, a fourth straight rod, a fifth straight rod, and a sixth straight rod connected in sequence. The first straight rod is vertically arranged and installed on the leaf-splitting long support 101, with a length of approximately 150-160 mm. The second straight rod is inclined forward, forming an angle of 145-150° with the first straight rod, and has a length of 120-140 mm. The third straight rod is arranged parallel to the first straight rod, with a length of 30-40 mm. The radius of the curved ring is 14-18 mm. The fourth... The first straight rod is arranged perpendicular to the third straight rod and located behind the third straight rod. The fourth straight rod is 110-120mm long. The fifth straight rod is inclined outward and forms an angle of 155-160° with the fourth straight rod. The fifth straight rod is 70-80mm long. The sixth straight rod is arranged parallel to the fourth straight rod and is 40-50mm long. The opening and closing angle range formed by the left leaf-splitting rod 109 and the right leaf-splitting rod 1011 is 30-80°, which can adapt to the leaf-splitting needs of different crop densities, improve the accuracy of leaf-splitting, reduce missed cutting, reduce crop damage, and improve the quality of harvest.

[0066] like Figure 5 As shown, the cutting mechanism 2 includes a cutter drive motor 201, a left support mounting plate 202, a cutter structure 203, a right support mounting plate 204, an adjustable movable square tube 205, an adjustable fixed square tube bracket 206, and a drive motor driver 207. The cutter drive motor 201 is mounted on the adjustable fixed square tube bracket 206 and is provided with a drive structure connected to the cutter structure 203. The left support mounting plate 202 and the right support mounting plate 204 are symmetrically arranged to form a mounting frame, and the cutter structure... Structure 203 is located between the left support mounting plate 202 and the right support mounting plate 204; the leaf-splitting long bracket 101 of the leaf-splitting device 1 is installed at the front end of the left support mounting plate 202 and the right support mounting plate 204; the rear ends of the left support mounting plate 202 and the right support mounting plate 204 are respectively connected to the adjustable movable square tube 205 by welding, the adjustable movable square tube 205 is sleeved on the adjustable fixed square tube bracket 206, and can slide up and down along the adjustable fixed square tube bracket 206 to adjust its height.

[0067] The cutting mechanism 2 is provided with a left support mounting plate 202 and a right support mounting plate 204 for mounting the leaf-splitting device 1 and the jetting device 4. The left support mounting plate 202 and the right support mounting plate 204 can be moved on the adjustable fixed square tube bracket 206 by adjusting the movable square tube 205 to adjust the height of the leaf-splitting device 1 and the jetting device 4 to meet the harvesting needs of different types and lengths of sweet potato stems and leaves.

[0068] like Figure 6 and 7As shown, the conveying device 3 includes a lower conveyor support 301, a channel sorting support 302, a conveyor belt 303, a lower conveyor belt drive rod 304, a conveyor drive motor 305, a reducer 306, an upper conveyor support 307, a conveyor belt tensioning upper frame 308, a conveyor belt upper drive rod 309, a conveyor belt drive wheel 3010, a conveyor belt tensioning lower frame 3011, and a bearing seat 3012. The lower conveyor support 301 and the upper conveyor support 307 are arranged in parallel and installed at the front and rear ends of the conveyor frame, respectively. Multiple channel sorting supports 302 are vertically arranged between the lower conveyor support 301 and the upper conveyor support 307. The lower conveyor support 301, the channel sorting support 302, and the upper conveyor support 307 are connected by bolts to form the overall frame structure of the conveying device and are installed above the cutter structure 203 of the cutting mechanism 2. The transmission rod 304 is mounted on the adjusting and fixing square tube bracket 206 of the cutting mechanism 2, and is close to the lower conveyor bracket 301. A driven pulley is provided on the lower transmission rod 304. The upper transmission rod 309 of the conveyor belt enters the upper conveyor bracket 307. The conveyor drive motor 305 is connected to the upper transmission rod 309 of the conveyor belt through the reducer 306, and drives the conveyor belt drive wheel 3010 on the upper transmission rod 309 of the conveyor belt to rotate and drive the conveyor belt 303 to transport. The upper tension frame 308 and the lower tension frame 3011 of the conveyor belt are respectively provided with long through holes. The two ends of the upper transmission rod 309 of the conveyor belt are respectively installed on the long through holes through bearing seats 3012. It can be slidably installed on the long through holes by bolts to tension the conveyor belt 303. The conveyor drive motor 305 is provided with a drive device and is connected to the automated PC industrial control device 7.

[0069] The conveying device 3 is equipped with a multi-channel conveyor belt 303 conveying structure, as well as a conveying drive motor 305 and a reducer 306. The conveying drive motor 305 is equipped with a drive device, which can adjust the conveying speed to meet the conveying requirements of sweet potato stems and leaves with different growth stages.

[0070] like Figure 8As shown, the jet device 4 includes a conical air guide pipe 401, a multi-pass jet pipe 402, a corner connecting pipe 403, a connecting straight pipe 404, an air compressor jet 405, and a jet drive device 406. The two ends of the conical air guide pipe 401 are respectively mounted on the left support mounting plate 202 and the right support mounting plate 204 of the cutting mechanism 2. The conical air guide pipe 401 is vertically connected to multiple multi-pass jet pipes 402. The smaller diameter end of the conical air guide pipe 401 is connected via the corner connecting pipe. One end of the 403 is connected to the connecting straight pipe 404, and the other end of the connecting straight pipe 404 is connected to the air compressor jet 405. The air compressor jet 405 is connected to the jet drive device 406 through a line. The jet drive device 406 is connected to the automated PC industrial control device 7 through a line. The conical air guide pipe 401 is connected to the multi-pass jet pipe 402. The conical air guide pipe 401 is connected to the air compressor jet 405 through the corner connecting pipe 403 and the connecting straight pipe 404.

[0071] The jet device 4 is equipped with a multi-pass jet pipe 402. The jet volume of the air compressor 405 can be adjusted by the jet drive device 406 to control the air output of the multi-pass jet pipe 402. A conical air guide pipe 401 is also provided to ensure sufficient air volume at each outlet of the multi-pass jet pipe 402, meeting the blowing requirements of the stems and leaves of each conveyor belt and reducing damage to the stems and leaves. The airflow weakens with distance from the air inlet; the conical air guide pipe 401 increases the airflow at greater distances, resulting in a more uniform airflow.

[0072] like Figure 9 and 10As shown, the height and slope adjustment device 5 includes a right slope adjustment slide rail 501, a right lower slope adjustment slider 502, an overall lower support 503, an upper and lower hinge support base 504, a left lower slope adjustment slider 505, a left slope adjustment slide rail 506, an upper and lower hydraulic support rod 507, a left upper slope adjustment slider 508, an angle hinge support base 509, an angle adjustment hydraulic support rod 5010, an overall upper support I 5011, a right upper slope adjustment slider 5012, and an overall upper support II 5013; the overall lower support 503 is installed on the conveyor frame of the conveying device 3 at the end closest to the cutting mechanism 2. Overall, bracket I 5011 and overall bracket II 5013 are arranged in parallel and installed at the end of the conveyor frame of the conveying device 3 furthest from the cutting mechanism 2. The right slope adjustment slide rail 501 and the left slope adjustment slide rail 506 are arranged in parallel, with one end of each slide rail hinged to the chassis frame of the electric walking chassis 6. The other ends of each slide rail are installed between overall bracket I 5011 and overall bracket II 5013. The lower right slope adjustment slider 502 and the upper right slope adjustment slider 5012 are respectively fitted onto... The slope adjustment upper right slider 5012 is connected to the overall upper bracket I 5011 and overall upper bracket II 5013 on the right slope adjustment slide rail 501; the slope adjustment lower right slider 502 is connected to the right base via a right connecting rod, and the right base is installed on the overall lower bracket 503; the slope adjustment lower left slider 505 and slope adjustment upper left slider 508 are respectively sleeved on the slope adjustment left slide rail 506, and the slope adjustment upper left slider 508 is connected to the overall upper bracket I 5011 and overall upper bracket II 5013; the slope adjustment upper left slider 508 is connected to the left base via a left connecting rod, and the left base is installed on the overall lower bracket 503. On the lower bracket 503; the bottom of the vertically adjustable hydraulic support rod 507 is connected to the chassis frame via the vertically hinged support base 504, and the top of the vertically adjustable hydraulic support rod 507 is connected to the overall upper bracket I 5011; the bottom of the angle-adjustable hydraulic support rod 5010 is connected to the chassis frame via the angle hinge support base 509, and the top of the angle-adjustable hydraulic support rod 5010 is hinged to the overall upper bracket II 5013; both the vertically adjustable hydraulic support rod 507 and the angle-adjustable hydraulic support rod 5010 are connected to a hydraulic pump, and the hydraulic pump is equipped with wiring connected to the automated PC industrial control device 7;

[0073] The drive switching and central control center 1013 has a built-in gyroscope to monitor the angle change signal of the whole machine caused by the change of ground slope, and transmit it to the automated PC industrial control device 7. When the angle change exceeds the preset value, the automated PC industrial control device 7 controls the angle adjustment hydraulic support rod to adjust the angle between the conveyor frame of the conveyor device 3 and the ground.

[0074] The height and slope adjustment device 5 is equipped with a right slope adjustment slide rail 501 and a left slope adjustment slide rail 506, along with a cooperating right lower slope adjustment slider 502, left lower slope adjustment slider 505, left upper slope adjustment slider 508, and right upper slope adjustment slider 5012. The upper support I 5011 is pushed by the up-and-down adjustment hydraulic rod 507, causing the entire conveyor frame of the conveying device 3 to move along the right slope adjustment slide rail 501 and the left slope adjustment slide rail 506. This allows the height of the entire conveying device 3 to be adjusted via the up-and-down adjustment hydraulic support rod 507. The angle adjustment hydraulic support rod 5010 pushes the upper support II 5013, causing the right slope adjustment slide rail 501 and the left slope adjustment slide rail 506 to rotate the entire conveyor frame of the conveying device 3 along the chassis frame. The angle adjustment hydraulic support rod 5010 can adjust the angle between the entire conveying device 3 and the ground to adapt to the harvesting needs of sweet potato stems and leaves at different slopes.

[0075] like Figure 11 As shown, the electric walking chassis 6 includes a front axle 601, front wheels 602, a body frame 603, rear wheels 604, a stem and leaf collection platform 605, a collection box 606, a motor battery 607, and a walking motor 608. The front wheels 602 are mounted on the front axle 601. The front end of the body frame 603 is connected to the front axle 601, the rear wheels 604 are mounted on both sides of the body frame 603, the stem and leaf collection platform 605 is mounted on the rear end of the body frame 603, and the collection box 606 is mounted on the stem and leaf collection platform 605. The motor battery 607 and the walking motor 608 are located on the body frame 603. The motor battery 607 is connected to the walking motor 608, and the walking motor 608 is connected to the rear wheels 604. The electric walking chassis 6 uses a walking motor 608 structure and is equipped with a walking motor 608 drive control device to control the walking speed.

[0076] like Figure 12As shown, the automated PC industrial control device 7 includes a control center, and a control line interface 701, a power indicator light 702, a machine parameter display screen 703, a power switch 704, a blade width adjustment knob 705, a body angle adjustment knob 706, a machine body height adjustment knob 707, a body speed adjustment knob 708, a conveyor speed adjustment knob 709, a jet speed adjustment knob 7010, an emergency stop knob 7011, and a wireless data network transmission antenna 7012 connected to the control center. The control line interface 701 is connected to the blade splitting device 1 and the cutting device 1, respectively. Mechanism 2, conveying device 3, jetting device 4, and height and slope adjustment device 5 are connected; specifically, the automated PC industrial control device 7 is equipped with a control line interface 701 and a machine parameter display screen 703. It can be connected to the central control center 1013, the drive motor driver 207 of the cutting mechanism 2, the conveying transmission motor 305 driver of the conveying device 3, the jet engine drive device 406 of the jetting device 4, and the up-and-down adjustment hydraulic support rod 507 and angle adjustment hydraulic support rod of the height and slope adjustment device 5 via the control line interface 701. The air pump controller of 5010 performs data interaction and issues control commands; when the remaining power of the electric walking chassis 6 is lower than a preset value, the control center sends a signal to the power indicator light 702, and the power indicator light 702 flashes to indicate this; the machine parameter display screen 703 is used to display parameters; the power switch 704 is used to send a signal to the control center to control the start and stop of the walking motor 608; the blade width adjustment knob 705 is used to adjust the blade width of the blade device 1; the body angle adjustment knob 706 is used to adjust the height and slope adjustment device 5. The angle formed between the conveyor device 3 and the ground; the machine body height adjustment knob 707 is used to adjust the height of the conveyor device 3 and the ground via the height and slope adjustment device 5; the body speed adjustment knob 708 is used to adjust the speed of the electric walking chassis 6; the conveying speed adjustment knob 709 is used to adjust the conveying speed of the conveyor device 3; the jet speed adjustment knob 7010 is used to adjust the jet size of the jet device 4; the emergency stop knob 7011 is used to send an emergency stop signal to the control center to stop all motors; the wireless data network transmission antenna 7012 is used to transmit data.

[0077] The automated PC industrial control device 7 can adjust the leaf width of the leaf-splitting device 1, the body angle and height of the conveying device 3 and the height and slope adjustment device 5, the jet size of the jet device 4, and the walking speed of the electric walking chassis 6, thus realizing the integrated control of the overall mechanical structure.

[0078] When harvesting, the electric chassis 6 is first started, and the machine begins to move in the field. The image acquisition camera 108 on the leaf-splitting device 1 at the front of the harvester begins to collect real-time image data of the rows of sweet potato stems and leaves in front, and sends the data to the automated PC industrial control device 7.

[0079] After receiving image data, the automated PC industrial control device 7 calculates the actual ridge width of the current crop row. Subsequently, the automated PC industrial control device 7 sends a command to the stepper motor driver 1012 via the drive switching and central control center 1013, driving the small high-torque stepper motor 104 to rotate. The power of the motor is transmitted through the meshing rotating gears I 105, II 106, and III 107, thereby driving the left leaf-splitting rod 109 and right leaf-splitting rod 1011 connected to the gears to open and close, so that their leaf width matches the identified ridge width, improving the accuracy of stem and leaf alignment.

[0080] After the stems and leaves are precisely divided into rows, the cutter structure 203 mounted on the cutting mechanism 2 performs high-speed reciprocating or rotating cuts under the drive of the cutter drive motor 201. At the moment the stems and leaves are cut, the high-pressure airflow generated by the air compressor jet 405 of the jet device 4 located behind the cutter is evenly distributed to each nozzle of the multi-pass jet pipe 402 through the conical air guide pipe 401, forming a strong yet gentle airflow that blows the cut sweet potato stems and leaves onto the conveyor belt 303 of the conveying device 3 behind in a non-contact manner.

[0081] To adapt to the growth of sweet potatoes in different regions or varieties, operators can adjust the cutting mechanism 2 using the machine body height adjustment knob 707 on the automated PC industrial control device 7. This adjustment causes the adjusting movable square tube 205 to slide on the adjusting fixed square tube support 206, thereby changing the overall working height of the leaf-splitting device 1 and the air-jetting device 4 to ensure that the cutter and the air-jetting nozzle are always in the optimal working position.

[0082] When operating on uneven terrain such as hills and slopes, the height and slope adjustment device 5 plays a crucial role. When the drive switching and the gyroscope built into the central control center 1013 detects vehicle tilt or when the operator intervenes via the vehicle angle adjustment knob 706, the control system controls the extension and retraction of the vertical adjustment hydraulic support rod 507 and the angle adjustment hydraulic support rod 5010, which are connected to the hydraulic pump. This action changes the angle between the conveyor frame of the conveyor device 3, mounted on the right slope adjustment slide rail 501 and the left slope adjustment slide rail 506, and the ground. This, in turn, changes the angles of the splitting blade device 1, the cutting mechanism 2, the conveying device 3, and the jetting device 4 to compensate for the effects of the terrain and ensure the stability and consistency of the harvesting operation.

[0083] Preferably, throughout the entire operation, the automated PC industrial control device 7 not only processes image data and issues control commands, but also allows the operator to steplessly adjust parameters such as conveyor belt speed and overall machine travel speed through the conveyor speed adjustment knob 709 and the jet speed adjustment knob 7010, in order to match different harvest volumes and operational needs. Ultimately, it realizes a fully integrated and intelligent harvesting process from ridge width recognition, automatic leaf separation, low-damage cutting, jet conveying to posture adaptation.

[0084] This invention uses a non-contact jet device 4 as the core thrust, replacing the traditional mechanical feeding method and reducing physical damage to delicate stems and leaves.

[0085] This invention utilizes a front-end image acquisition camera 108 to identify the height and density of each row of sweet potato stems and leaves in real time. It also monitors the overall operating height and angle of the machine. Based on this, the automated PC industrial control device 7 can control and dynamically adjust the width of the leaf separating device, the height of the cutter and the air jet device 4, the airflow of the air jet device 4, the speed of the conveying device 3, and the posture of the height and slope adjustment device 5. This facilitates further adaptive adjustments based on the actual growth status of the crop (crop height and density) and changes in ground slope (changes in the overall machine angle), improving harvesting accuracy and adaptability to complex field environments. It also reduces missed harvests caused by the fixed machine structure and inability to make timely adjustments, and reduces stem and leaf damage.

[0086] This invention integrates modules such as image recognition, leaf separation, cutting, air jet conveying, and attitude adjustment into an organic whole through an integrated PC industrial control device 7. This allows the PC industrial control device 7 to adjust the leaf separation width and working height in a timely manner based on the detected changes in ridge width or crop growth. According to changes in slope, the PC industrial control device 7 adjusts the vehicle posture to keep the working unit in optimal condition at all times, thereby reducing the harvest damage rate of sweet potato stems and leaves and comprehensively improving the quality and efficiency of harvesting.

[0087] It should be understood that although this specification is described according to various embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0088] The detailed descriptions listed above are merely specific descriptions of feasible embodiments of the present utility model, and are not intended to limit the scope of protection of the present utility model. All equivalent embodiments or modifications made without departing from the spirit of the present utility model should be included within the scope of protection of the present utility model.

Claims

1. A harvester for leafy sweet potato stems and leaves, characterized in that, It includes a leaf-splitting device (1), a cutting mechanism (2), a conveying device (3), an air jet device (4), a height and slope adjustment device (5), an electric walking chassis (6), and a PC industrial control device (7). The leaf-splitting device (1) is located in front of the vehicle body and is mounted on the cutting mechanism (2); the jet device (4) is located behind the leaf-splitting device (1) and is mounted on the cutting mechanism (2); the conveying device (3) is located below the vehicle body and behind the cutting mechanism (2), and a height and slope adjustment device (5) is installed below the conveying device (3), which is mounted on the electric walking chassis (6); The PC industrial control device (7) is connected to the leaf splitting device (1), the cutting mechanism (2), the conveying device (3), the jetting device (4), and the height and slope adjustment device (5), respectively.

2. The leaf-eating sweet potato stem and leaf harvester according to claim 1, characterized in that, The leaf-splitting device (1) includes a leaf-splitting long support (101), a leaf-splitting short support (102), a leaf-splitting support upper plate (103), several leaf-splitting mechanisms, an image acquisition camera (108), a stepper motor driver (1012), and a drive switching and central control center (1013). The lobed short support (102) is installed on the side of the lobed long support (101), and the lobed support upper plate (103) is installed on the lobed long support (101) and the lobed short support (102) to form an integral frame; The leaf-splitting mechanism is mounted on the leaf-splitting long support (101). Each leaf-splitting mechanism includes a high-torque stepper motor (104), a rotary gear I (105), a rotary gear II (106), a rotary gear III (107), a left leaf-splitting rod (109), a splitting rod (1010), and a right leaf-splitting rod (1011). The high-torque stepper motor (104) is connected to the rotary gear III (107) via a shaft, and the rotary gear III (107) meshes with the rotary gear II (106), and the rotary gear II (106) meshes with the rotary gear I (105). The rotary gear I (105) is connected to the top end of the left leaf-splitting rod (109), and the rotary gear II (106) is connected to the top end of the right leaf-splitting rod (1011). The left leaf-splitting rod (109) is connected to the top end of the right leaf-splitting rod (1011). 9) The right leaf-splitting rod (1011) is mounted on the leaf-splitting long support (101) via a bearing; the high-torque stepper motor (104) drives the right leaf-splitting rod (1011) and the left leaf-splitting rod (109) to rotate in opposite directions via the drive gear II (106) and the drive gear I (105), thereby changing the leaf-splitting gap between adjacent leaf-splitting mechanisms; the image acquisition camera (108), the stepper motor driver (1012), and the drive switching and central control center (1013) are mounted on the leaf-splitting support upper plate (103), and the image acquisition camera (108) and the stepper motor driver (1012) are both connected to the drive switching and central control center (1013), and the drive switching and central control center (1013) is connected to the PC industrial control device (7).

3. The leaf-eating sweet potato stem and leaf harvester according to claim 2, characterized in that, The left leaf rod (109) and the right leaf rod (1011) each include a first straight rod, a second straight rod, a third straight rod, a curved ring, a fourth straight rod, a fifth straight rod and a sixth straight rod connected in sequence; The first straight rod is vertically installed on the leaf-splitting long bracket (101) and is approximately 150-160 mm long. The second straight rod is inclined forward and forms an angle of 145-150° with the first straight rod. The length of the second straight rod is 120-140 mm. The third straight rod is parallel to the first straight rod and is 30-40 mm long with a bending ring radius of 14-18 mm. The fourth straight rod is perpendicular to the third straight rod and is located behind the third straight rod. The length of the fourth straight rod is 110-120 mm. The fifth straight rod is inclined outward and forms an angle of 155-160° with the fourth straight rod. The length of the fifth straight rod is 70-80 mm. The sixth straight rod is parallel to the fourth straight rod and is 40-50 mm long. The opening and closing angle range formed by the left leaf-splitting rod (109) and the right leaf-splitting rod (1011) is 30-80°.

4. The leaf-eating sweet potato stem and leaf harvester according to claim 1, characterized in that, The cutting mechanism (2) includes a cutter drive motor (201), a left support mounting plate (202), a cutter structure (203), a right support mounting plate (204), an adjustable movable square tube (205), an adjustable fixed square tube bracket (206), and a drive motor driver (207). The cutter drive motor (201) is mounted on the adjustable and fixed square tube bracket (206), and the cutter drive motor (201) is connected to the cutter structure (203); the left support mounting plate (202) and the right support mounting plate (204) are symmetrically arranged to form a mounting frame, and the cutter structure (203) is located between the left support mounting plate (202) and the right support mounting plate (204); The leaf-splitting device (1) is installed at the front end of the left support mounting plate (202) and the right support mounting plate (204); the rear ends of the left support mounting plate (202) and the right support mounting plate (204) are respectively connected to the adjustable movable square tube (205), which is sleeved on the adjustable fixed square tube bracket (206) and can slide up and down along the adjustable fixed square tube bracket (206) to adjust its height.

5. The leaf-eating sweet potato stem and leaf harvester according to claim 1, characterized in that, The conveying device (3) includes a lower conveyor support (301), a channel classification support (302), a conveyor belt (303), a lower conveyor belt drive rod (304), a conveyor drive motor (305), a reducer (306), an upper conveyor support (307), an upper conveyor belt tensioning frame (308), an upper conveyor belt drive rod (309), a conveyor belt drive wheel (3010), a lower conveyor belt tensioning frame (3011), and a bearing seat (3012). The lower conveyor support (301) and upper conveyor support (307) are arranged in parallel and installed at the front and rear ends of the conveyor frame, respectively. Multiple channel sorting supports (302) are vertically arranged between the lower conveyor support (301) and upper conveyor support (307). The lower conveyor support (301), channel sorting supports (302), and upper conveyor support (307) form the overall frame structure of the conveying device and are installed above the cutting mechanism (2). The lower conveyor belt drive rod (304) is installed on the cutting mechanism (2) and is close to the end of the lower conveyor support (301). A driven pulley is provided on the lower conveyor belt drive rod (304). The upper conveyor belt drive rod (309) enters... At the upper support (307) end of the conveyor belt, the conveyor drive motor (305) is connected to the upper drive rod (309) of the conveyor belt through the reducer (306), and drives the conveyor belt drive wheel (3010) on the upper drive rod (309) to rotate and drive the conveyor belt (303) to transport; the upper tension frame (308) and the lower tension frame (3011) of the conveyor belt are respectively provided with long through holes, and the two ends of the upper drive rod (309) of the conveyor belt are respectively connected to the long through holes through bearing seats (3012), and can be slidably installed on the long through holes by bolts to tension the conveyor belt (303); the conveyor drive motor (305) is connected to the PC industrial control device (7).

6. The leaf-eating sweet potato stem and leaf harvester according to claim 1, characterized in that, The jet device (4) includes a conical air guide pipe (401), a multi-pass jet pipe (402), a corner connecting pipe (403), a connecting straight pipe (404), an air compressor jet (405), and a jet drive device (406). The conical air guide pipe (401) is installed on the cutting mechanism (2). The conical air guide pipe (401) is vertically connected to multiple multi-channel jet pipes (402). The smaller diameter end of the conical air guide pipe (401) is connected to one end of the connecting straight pipe (404) through the corner connecting pipe (403). The other end of the connecting straight pipe (404) is connected to the air compressor jet (405). The air compressor jet (405) is connected to the jet drive device (406) through a line. The jet drive device (406) is connected to the PC industrial control device (7) through a line. The conical air guide tube (401) is connected to the multi-pass jet tube (402), and the conical air guide tube (401) is connected to the air compressor jet (405) through the corner connecting pipe (403) and the connecting straight pipe (404).

7. The leaf-eating sweet potato stem and leaf harvester according to claim 2, characterized in that, The height and slope adjustment device (5) includes a right slope adjustment slide rail (501), a right lower slope adjustment slider (502), an overall lower support (503), an upper and lower hinge support base (504), a left lower slope adjustment slider (505), a left slope adjustment slide rail (506), an upper and lower hydraulic support rod (507), a left upper slope adjustment slider (508), an angle hinge support base (509), an angle adjustment hydraulic support rod (5010), an overall upper support I (5011), a right upper slope adjustment slider (5012), and an overall upper support II (5013). The overall lower support (503) is installed on the conveyor frame of the conveying device (3) at the end closest to the cutting mechanism (2). The overall upper support I (5011) and overall upper support II (5013) are arranged in parallel and installed on the other end of the conveyor frame of the conveying device (3) at the end furthest from the cutting mechanism (2). The slope adjustment right slide rail (501) and slope adjustment left slide rail (506) are arranged in parallel, and one end of the slope adjustment right slide rail (501) and slope adjustment left slide rail (506) are respectively connected to the chassis frame of the electric walking chassis (6). The slope adjustment right slide rail (501) The other ends of the slope adjustment left slide rail (506) and the slope adjustment left slide rail (506) are respectively installed between the overall upper bracket I (5011) and the overall upper bracket II (5013); the slope adjustment right lower slide rail (502) and the slope adjustment right upper slide rail (5012) are respectively sleeved on the slope adjustment right slide rail (501), and the slope adjustment right upper slide rail (5012) is connected to the overall upper bracket I (5011) and the overall upper bracket II (5013); the slope adjustment right lower slide rail (502) is connected to the right base through the right connecting rod, and the right base is installed on the overall lower bracket (503); The slope adjustment lower left slider (505) and slope adjustment upper left slider (508) are respectively sleeved on the slope adjustment left slide rail (506), and the slope adjustment upper left slider (508) is connected to the overall upper bracket I (5011) and the overall upper bracket II (5013); the slope adjustment upper left slider (508) is connected to the left base through the left connecting rod, and the left base is installed on the overall lower bracket (503); The bottom of the vertically adjustable hydraulic support rod (507) is connected to the chassis frame via the vertically hinged support base (504), and the top of the vertically adjustable hydraulic support rod (507) is connected to the overall upper bracket I (5011); the bottom of the angle-adjustable hydraulic support rod (5010) is connected to the chassis frame via the angle hinged support base (509), and the top of the angle-adjustable hydraulic support rod (5010) is hinged to the overall upper bracket II (5013); The vertical adjustment hydraulic support rod (507) and the angle adjustment hydraulic support rod (5010) are both connected to the hydraulic pump, and the hydraulic pump is connected to the PC industrial control device (7). The drive switching and central control center (1013) has a built-in gyroscope to monitor the angle change signal of the whole machine caused by the change of ground slope, and transmit it to the PC industrial control device (7).

8. The leaf-eating sweet potato stem and leaf harvester according to claim 1, characterized in that, The electric walking chassis (6) includes a front walking axle (601), front walking wheels (602), a vehicle body support (603), a rear walking wheel (604), a stem and leaf collection platform (605), a collection box (606), a motor battery (607), and a walking motor (608). The front walking wheels (602) are installed on the front walking axle (601); the front end of the vehicle body bracket (603) is connected to the front walking axle (601), the rear walking wheels (604) are installed on both sides of the vehicle body bracket (603), the stem and leaf collection platform (605) is installed at the rear end of the vehicle body bracket (603), and the collection box (606) is installed on the stem and leaf collection platform (605); The motor battery (607) and the walking motor (608) are located on the vehicle body bracket (603); the motor battery (607) is connected to the walking motor (608), and the walking motor (608) is connected to the rear walking wheel (604).

9. The leaf-eating sweet potato stem and leaf harvester according to claim 1, characterized in that, The PC industrial control device (7) includes a control center, and a control line interface (701), a power indicator light (702), a machine parameter display screen (703), a power switch (704), a leaf width adjustment knob (705), a body angle adjustment knob (706), a machine body height adjustment knob (707), a body speed adjustment knob (708), a conveyor speed adjustment knob (709), a jet speed adjustment knob (7010), an emergency stop knob (7011), and a wireless data network transmission antenna (7012).

10. The leaf-eating sweet potato stem and leaf harvester according to claim 1, characterized in that, A handle is provided at the rear of the vehicle body, and the PC industrial control device (7) is installed on the handle.

Images