Chinese chive harvester

Abstract

The utility model provides a Chinese chive harvester. The Chinese chive harvester comprises a frame, a cutting unit, a walking unit, a main control unit, a conveying unit and a collecting unit, compared with the prior art, the Chinese chive harvester is high in structural automation degree, remote control can be achieved through external equipment control, the moving speed, the cutting mechanism running speed and the conveying belt conveying mechanism running speed can be adjusted, and therefore the Chinese chive harvester adapts to different Chinese chive planting densities, and the harvesting efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of agricultural machinery technology, specifically to a leek harvester. Background Technology

[0002] Currently, most leek harvesters on the domestic market require a person to follow behind and push the machine throughout the harvesting process. While machine harvesting is more efficient than manual harvesting, the labor intensity remains high, causing significant physical exertion. Existing technologies, such as patent CN2016209834573, suffer from problems like poor reeling and complex processing, leading to missed or under-harvested leeks requiring manual replanting afterward. They also have poor battery life, requiring frequent charging. Some leek harvesters have exposed internal components, making them vulnerable to damage from rain or dust storms, and they cannot operate in light rain. Furthermore, patent CN2016209633038 lacks the ability to adjust the cutter speed and conveyor belt speed, failing to adapt these settings to varying leek density. Currently, there is no leek harvester that can be fully controlled remotely. Utility Model Content

[0003] To overcome the problems existing in the prior art, this utility model proposes a leek harvester, including a frame, a cutting unit, a walking unit, a main control unit, a conveying unit, and a collecting unit. The frame is a symmetrical metal frame, with the body inclined to the horizontal plane. From the rear to the front of the frame are a first U-shaped longitudinal beam, a second U-shaped longitudinal beam, and a third U-shaped longitudinal beam. The top left side of the top of the U-shaped longitudinal beam is connected to a left crossbeam, and the top right side of the top of the U-shaped longitudinal beam is connected to a right crossbeam. A cantilever beam is welded to the bottom of the U-shaped longitudinal beam. The front part of the left crossbeam is a left support beam, and the front part of the right crossbeam is a right support beam. The outer shell is connected to the frame by bolts. A solar panel is installed on the upper part of the outer shell. The cutting unit includes a cutting... The system includes a mechanism adjustment base, a cutting motor, a cutting drive shaft, a cutting bracket, cutting blades, and a feeder. The cutting mechanism adjustment base is bolted to the frame to support the cutting bracket and adjust the height of the cutting blades. The feeder has a stepped trapezoidal shape on the horizontal plane and a right-angled trapezoidal shape on the vertical plane. The walking unit includes a left front small wheel, a right front small wheel, a left rear large wheel, a right rear large wheel, a connecting rod, a left control speed motor, and a right control speed motor. The main control unit can be remotely controlled. The conveying unit enables the chives to be transported horizontally during the backward conveying process. The collection unit includes a gravity sensor that can sense the weight of the collection basket and feed the data back to the main control unit.

[0004] The frame is a symmetrical metal frame made of aluminum alloy, with a horizontal length of 4630mm and a width of 1420mm. The left and right crossbeams are also 4630mm long, made of aluminum alloy, and have a hollow rectangular cross-section. The outer shell is made of acrylic and is a rectangular shape covering the frame. The top front surface of the outer shell is a rectangular plate with a length of 1150mm and a width of 470mm, on which a solar panel is installed.

[0005] The solar panel is made of crystalline silicon and is located on the outer casing and bonded to it.

[0006] The cutting mechanism adjustment and fixing seat is located at the front of the harvester, about 10 cm in front of the left and right front fixing seats of the conveyor belt, and has slots on both sides; the cutting motor is a horizontal cylinder with a base radius of 50 mm and a height of 130 mm; the bottom of the cutting motor is bolted to the second U-shaped longitudinal beam, and the output end is a round concave spur gear; the cutting drive shaft is a horizontal cylinder with a round convex spur gear at the rear end, which meshes with the cutting motor; the upper part of the cutting bracket is a vertical cylinder, and the lower part is a triangular prism; the rear end of the upper vertical cylinder of the cutting bracket has a round hole for threaded connection with the cutting drive shaft; the lower part of the triangular prism of the cutting bracket has a slot for embedding the cutting blade and is fixed by screws; the cutting blade is a three-toothed blade; the rice lifters include a left lifter and a right lifter.

[0007] The horizontal shape of the reel is a stepped trapezoid, 170mm high, with an upper base length of 470mm and a lower base length of 510mm. A 90mm long and 35mm wide rectangle is cut off from the outer edge of the lower base. There is a hole 10mm from the front and 10mm from the outer edge of the horizontal surface for bolt connection with the left and right crossbeams. The vertical shape of the reel is a right-angled trapezoid, 170mm high, with an upper base length of 200mm and a lower base length of 250mm. The right-angled side of the vertical surface is glued to the hypotenuse of the horizontal surface or formed as one piece, with an included angle of 100° between the two surfaces.

[0008] The walking unit is arranged at the bottom of the frame to support the harvester and provide power for the forward movement and turning of the harvester; the left control speed motor drives the left rear large wheel to rotate, and the right control speed motor drives the right rear large wheel to rotate. The left rear large wheel and the right rear large wheel are movably connected to the connecting rod; the left front small wheel is made of polyurethane, with a radius of 70 mm and a thickness of 30 mm. The inner ring of the left front small wheel is connected with an outer "L"-shaped hollow aluminum alloy frame. The horizontal rod of the aluminum alloy frame faces the outside of the leek harvester, and the vertical rod is bolted to the left support beam and can be adjusted in height; the right front small wheel is made of polyurethane, with a radius of 70 mm and a thickness of 30 mm. The inner ring of the right front small wheel is connected with an outer "L"-shaped hollow aluminum alloy frame. The horizontal rod of the aluminum alloy frame faces the outside of the leek harvester, and the vertical rod is bolted to the right support beam and can be adjusted in height; the left rear large wheel and the right rear large wheel have a rubber tread and an aluminum alloy inner core, with a radius of 340 mm and a width of 80 mm; the connecting rod is a round rod made of aluminum alloy, with a length of 350 mm; the left control rotation motor and the right control rotation motor are cylindrical, with an aluminum alloy shell, a radius of 50 mm, and a height of 150 mm; the main control unit is electrically connected to the left control rotation motor and the right control rotation motor.

[0009] The main control unit is located on the suspension beam under the frame, between the two rear large wheels. It has a rectangular acrylic protective shell outside, with a length of 310 mm, a width of 170 mm, and a height of 190 mm. Inside the acrylic protective shell, a rectangular acrylic placement board is adhesively bonded, and the development board control board is threadedly connected to the placement board.

[0010] The conveying unit includes a left front fixed seat of the conveyor belt, a right front fixed seat of the conveyor belt, an upper conveyor belt, a lower conveyor belt, a conveyor belt drive structure, an upper roller, a lower roller, a left front rubber roller, a right front rubber roller, an upper rubber roller, a lower rubber roller, and a conveyor belt drive motor cover; both the left front fixed seat and the right front fixed seat of the conveyor belt are made of aluminum alloy, in the shape of a "C"-shaped fixed seat. The vertical surface is on the outside of the frame, in the shape of a vertical rectangle, with a length of 200 mm, closely attached to the frame, and there are bolts at the upper and lower parts to lock and fix it to the frame. The inner horizontal rectangle has a length of 190 mm, and there are holes punched in the upper and lower parts of the horizontal rectangle. The left front fixed seat of the conveyor belt is fixed to the insertion hole of the left front rubber roller, and the right front fixed seat of the conveyor belt is fixed to the insertion hole of the right front rubber roller; the upper conveyor belt and the lower conveyor belt are sponge material rectangular strips.

[0011] The conveyor belt drive structure is located at the rear of the right crossbeam and includes a drive motor, a large gear, two small gears, and a chain. The drive motor starts, causing the large gear to rotate. The rotation of the large gear drives the chain, which in turn drives the two small gears connected to the upper and lower rollers, causing them to rotate. This, in turn, drives the entire conveyor unit to rotate. The conveyor belt drive structure is electrically connected to and controlled by the main control unit. Both the upper and lower rollers are aluminum alloy round rods, 480mm in length. One end near the conveyor belt drive structure is fixedly connected to a small gear, rotating to drive its own rotation. The other end is movably connected to the frame. An upper rubber roller is fixed in the middle of the upper roller, rotating to drive its own rotation. A lower rubber roller is fixed in the middle of the lower roller, rotating to drive its own rotation. The left and right front rubber rollers are both cylindrical objects made of polyurethane.

[0012] The battery box contains a rechargeable 48V battery that can be charged by a solar panel; the gravity sensor is installed on the base of the collection unit, with one end suspended in the air and the other end threadedly connected to the base of the collection unit and electrically connected to the main control unit.

[0013] Compared with existing technologies, this invention features a high degree of automation and can be remotely controlled via external devices. Furthermore, this invention allows for adjustment of the moving speed, as well as the operating speed of the cutting mechanism and conveyor belt, thereby adapting to different chive planting densities and improving harvesting efficiency. Attached Figure Description

[0014] Figure 1 This is a side view of the present invention;

[0015] Figure 2 This is a side view of the present invention with the outer shell removed;

[0016] Figure 3 This is a bottom side view of the present invention;

[0017] Figure 4 This is a front view of the present utility model;

[0018] Figure 5 This is a partial enlarged view of the cutting unit of this utility model;

[0019] Explanation of reference numerals in the attached drawings: 1. Frame; 101. First U-shaped longitudinal beam; 102. Second U-shaped longitudinal beam; 103. Third U-shaped longitudinal beam; 104. Left crossbeam; 105. Right crossbeam; 106. Left support beam; 107. Right support beam; 2. Cutting unit; 201. Cutting mechanism adjustment fixing seat; 202. Cutting motor; 203. Cutting drive shaft; 204. Cutting bracket; 205. Cutting blade; 4. Rice lifter; 401. Left rice lifter; 402. Right rice lifter; 5. Walking unit; 501. Left front small wheel; 502. Right front small wheel; 503. Left rear large wheel; 504. Right rear large wheel; 505. Connecting rod. 506. Left control speed motor; 507. Right control speed motor; 6. Main control unit; 7. Conveying unit; 701. Front left mounting bracket for conveyor belt; 702. Front right mounting bracket for conveyor belt; 703. Upper conveyor belt; 704. Lower conveyor belt; 705. Conveyor belt drive structure; 706. Upper roller; 707. Lower roller; 708. Front left rubber roller; 709. Front right rubber roller; 710. Upper rubber roller; 711. Lower rubber roller; 712. Conveyor belt drive motor cover; 8. Battery box; 9. Collection unit; 901. Collection unit base; 902. Gravity sensor; 903. Collection basket; 10. Outer casing; 11. Solar panel. Detailed Implementation

[0020] To make the objectives, technical methods, and advantages of this utility model clearer, the content of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0021] like Figure 1 As shown, in a specific embodiment of this utility model, the leek harvester includes a frame 1, a cutting unit 2, a walking unit 5, a main control unit 6, a conveying unit 7, and a collecting unit 9.

[0022] The frame 1 is a symmetrical metal frame made of aluminum alloy, with a horizontal length of 4630mm and a width of 1420mm. The body is inclined at 10° to the horizontal plane. There are two rectangular protective plates on each side of the frame to protect the side wings of the body. From the rear to the front, the frame 1 consists of a first U-shaped longitudinal beam 101, a second U-shaped longitudinal beam 102, and a third U-shaped longitudinal beam 102. The top left side of the U-shaped longitudinal beam is connected to the left crossbeam 104, and the top right side of the U-shaped longitudinal beam is connected to the right crossbeam 105, which can be welded or bolted. Multiple cantilever beams are welded to the bottom of the U-shaped longitudinal beams for fixing and installing equipment and supporting the frame 1. The left crossbeam 104 and the right crossbeam 105 are 4630mm long, made of aluminum alloy, and have a hollow rectangular cross section. The front of the left crossbeam 104 is bolted to the left support beam 106, and the front of the right crossbeam 105 is bolted to the right support beam 107. The outer shell 10 is bolted to the frame. 1. Made of acrylic, the outer shell 10 is rectangular in shape and covers the frame 1. It is mainly used to protect the inside of the harvester from external factors such as light rain and sandstorms, which could damage the internal parts. It can protect the internal mechanism from harsh environmental factors to a certain extent. The top front surface of the outer shell 10 is a rectangular plate with a length of 1150mm and a width of 470mm, on which a solar panel 11 is installed. The sides of the outer shell 10 are rectangular plates with a length of 1150mm and a width of 360mm. The top rear surface of the outer shell 10 is a horizontal rectangular plate with a length of 300mm and a width of 470mm. The sides of the rear of the outer shell 10 are rectangular plates with a length of 470mm and a width of 360mm. The thickness of the outer shell 10 is 4mm. The solar panel 11 is made of crystalline silicon and is bonded to the outer shell 10. It charges the battery box 8 when there is sufficient sunlight, enhancing the overall range of the harvester and increasing the sustainability of the leek harvester's operation.

[0023] like Figure 1 , Figure 2 , Figure 5 As shown, the leek harvester cutting unit 2 includes a cutting mechanism adjustment and fixing seat 201, a cutting motor 202, a cutting drive shaft 203, a cutting bracket 204, a cutting blade 205, and a leek lifter 4. Figure 5As shown, the cutting mechanism adjustment fixing seat 201 is located at the front of the harvester, approximately 10 cm in front of the left front fixing seat 701 and the right front fixing seat 702 of the conveyor belt. It has slots on both sides for adjusting the height of the fixing seat during bolt connection. The cutting mechanism adjustment fixing seat 201 is bolted to the frame 1, supporting the cutting bracket 204 and allowing adjustment of the height of the cutting blade 205, enabling efficient cutting of different chive heights under various conditions. The cutting motor 202 is a horizontal cylinder with an aluminum alloy casing, a 48V 500W rating, a base radius of 50mm, and a height of 130mm. The bottom of the cutting motor 202 is bolted to the second U-shaped longitudinal beam 102. The connection is fixed, and the output end is a round, concave spur gear used to drive the cutting drive shaft 203 to rotate, thereby driving the rotation of the cutting bracket 204 and the cutting blade 205. The cutting motor 202 is electrically connected to the main control unit 6 and is controlled by the main control unit 6. The cutting drive shaft 203 is generally cylindrical with a height of 535mm to 540mm. The inside is made of aluminum alloy, and the outside is a spiral plastic protective shell. The inner core of the rear end of the cutting drive shaft 203 is a round, convex spur gear that meshes with the cutting motor 202 and is driven to rotate by the cutting motor 202. The outer shell of the cutting bracket 204 is made of aluminum alloy. The upper part of the cutting bracket 204 is a vertical cylinder, and the lower part is a triangular prism. The rear end of the body has a round hole for threaded connection with the cutting drive shaft 203. A bolt fixing ring on the side of the cylindrical body secures the two together. The lower part of the cutting bracket 204 has a slot below the triangular prism to embed the cutting blade 205, which is then fixed with screws. The cutting blade 205 is a three-toothed blade made of manganese alloy steel, and has a slot and screws for connection with the cutting bracket 204. The cutting blade can be replaced according to different application scenarios. The rice lifter 4 includes a left rice lifter 401 and a right rice lifter 402, both made of acrylic. The left rice lifter 401 is bolted to the front of the left crossbeam 104, and the right rice lifter 402 is bolted to the front of the right crossbeam 105. They are installed symmetrically. The rice reel 4... The horizontal surface is a stepped trapezoid, 170mm high, with an upper base length of 470mm and a lower base length of 510mm. A 90mm long and 35mm wide rectangle is cut off from the outer edge of the lower base. A hole is drilled 10mm from the front and 10mm from the outer edge of the horizontal surface for bolt connection with the left crossbeam 104 and right crossbeam 105. The vertical surface of the puller 4 is a right-angled trapezoid, 170mm high, with an upper base length of 200mm and a lower base length of 250mm. The right-angled side of the vertical surface is glued to the hypotenuse of the horizontal surface or integrally formed, with an included angle of 100° between the two surfaces. The puller 4 serves to prevent the chives from falling over and to gather the chives. Compared with traditional pullers, the puller 4 has the advantages of simple structure, sturdiness and durability, good practicality and high cost performance.

[0024] The walking unit 5 includes a left front small wheel 501, a right front small wheel 502, a left rear large wheel 503, a right rear large wheel 504, a connecting rod 505, a left speed control motor 506, and a right speed control motor 507. The walking unit 5 is located at the bottom of the frame 1 to support the harvester and provide power for its forward movement and turning. The left control motor 506 drives the left rear wheel 503 to rotate, and the right control motor 507 drives the right rear wheel 504 to rotate. When the motors rotate at the same speed, the harvester can move forward and backward; when they rotate at different speeds, the harvester can turn left and right. The left and right rear wheels 503 and 504 are movably connected to the connecting rod 505. The left front wheel 501 is made of polyurethane, with a radius of 70mm and a thickness of 30mm. The inner ring of the left front wheel 501 is connected to an outer "L"-shaped hollow aluminum alloy frame. The horizontal bars of the aluminum alloy frame face outwards from the harvester, and the vertical bars are bolted to the left support beam 106, allowing for movement... The height is adjustable; the right front small wheel 502 is made of polyurethane, with a radius of 70mm and a thickness of 30mm. The inner ring of the right front small wheel 502 is connected to an outer "L"-shaped hollow aluminum alloy frame. The horizontal bar of the aluminum alloy frame faces outward of the leek harvester, and the vertical bar is bolted to the right support beam 107 for height adjustment; the left rear large wheel 503 and the right rear large wheel 504 have rubber treads and aluminum alloy inner cores, with a radius of 340mm and a width of 80mm; the connecting rod 505 is a round aluminum alloy rod with a length of 350mm; the left control rotary motor 506 and the right control rotary motor 507 are cylindrical with aluminum alloy shells, a radius of 50mm, and a height of 150mm; the main control unit 6 is electrically connected to the left control rotary motor 506 and the right control rotary motor 507.

[0025] The main control unit 6 is located on the suspension beam below the frame 1, between the two rear wheels. It is protected by a rectangular acrylic shell, 310mm long, 170mm wide, and 190mm high. A rectangular acrylic mounting plate is bonded inside the acrylic shell, and the development board and control board are threaded onto the mounting plate. The main control unit 6 is electrically connected to the cutting motor 202, the left speed control motor 506, the right speed control motor 507, the conveyor belt drive structure 705, the gravity sensor 902, the wireless communication module, and the miniature camera module. The miniature camera module is located in the middle of the front of the outer shell 10. The main control unit 6 uses an automatic control program to control the harvester and can remotely control functions such as forward, backward, steering, weight detection, and control of the cutter speed and conveyor belt speed. The wireless communication module can be a WIFI module or a LoRa module.

[0026] The conveyor unit 7 includes a left front fixed seat 701, a right front fixed seat 702, an upper conveyor belt 703, a lower conveyor belt 704, a conveyor belt drive structure 705, an upper roller 706, a lower roller 707, a left front rubber roller 708, a right front rubber roller 709, an upper rubber roller 710, a lower rubber roller 711, and a conveyor belt drive motor cover 712.Figure 2 、 Figure 3 、 Figure 4 、 Figure 5As shown, both the left front fixed seat 701 and the right front fixed seat 702 of the conveyor belt are made of aluminum alloy, with the shape of a "U" - shaped fixed seat. The vertical surface is on the outside of the frame 1, in the shape of a vertical rectangle with a length of 200 mm, closely attached to the frame 1, and there are bolts at the top and bottom to lock and fix it to the frame 1. The inner horizontal rectangle has a length of 190 mm, and there are holes punched above and below the horizontal rectangle. The left front fixed seat 701 of the conveyor belt is fixed to the socket of the left front rubber roller 708, and the right front fixed seat 702 of the conveyor belt is fixed to the socket of the right front rubber roller 709; The upper conveyor belt 703 is a rectangular strip made of sponge material, with a horizontal length of 1178 mm - 1180 mm, a width of 140 mm, and a thickness of 30 mm. There is a 15 - mm - wide raised rectangular strip inside the conveyor belt that can be combined with the grooves of the right front rubber roller 709 and the upper rubber roller 710 to fix the position. The upper conveyor belt 703 is connected and fixed to the right front rubber roller 709 and the upper rubber roller 710; The lower conveyor belt 704 is a rectangular strip made of sponge material, with a horizontal length of 1178 mm - 1180 mm, a width of 140 mm, and a thickness of 30 mm. There is a 15 - mm - wide raised rectangular strip inside the conveyor belt that can be combined with the grooves of the left front rubber roller 708 and the lower rubber roller 711 to fix the position. The lower conveyor belt 704 is connected and fixed to the left front rubber roller 708 and the lower rubber roller 711; The upper conveyor belt 703 and the lower conveyor belt 704 are mainly used to clamp the vertically - state leeks cut by the cutting unit 3, so that the leeks become horizontally - transverse transmission during the backward transmission process; The conveyor belt drive structure 705 is located at the rear of the right cross - beam 105, including a drive motor, a large gear, two small gears and a chain. When the drive motor starts, it drives the connected large gear to rotate. The rotation of the large gear drives the chain to move. The chain drives the rotation of the upper roller 706 and the lower roller 707 through two small gears combined with them, and then drives the entire conveyor unit 7 to rotate. The conveyor belt drive structure 705 is electrically connected to the main control unit 6 and is controlled by the main control unit 6; Both the upper roller 706 and the lower roller 707 are round rods made of aluminum alloy, with a length of 480 mm. One end close to the conveyor belt drive structure 705 is fixedly connected to the small gear, and its own rotation is driven by the rotation of the small gear. The other end is movably connected to the frame 1. The upper rubber roller 710 is fixed in the middle of the upper roller 706, and the rotation of the upper roller 706 drives the rotation of the upper rubber roller 710; The lower rubber roller 711 is fixed in the middle of the lower roller 707, and the rotation of the lower roller 707 drives the rotation of the lower rubber roller 711; Both the left front rubber roller 708 and the right front rubber roller 709 are cylindrical objects made of polyurethane material, with a height of 140 mm and a radius of 30 mm. There is a 15 - mm - wide groove in the middle. The left front rubber roller 708 and the right front rubber roller 709 are respectively vertically sleeved on the inner vertical rods of the left front fixed seat 701 and the right front fixed seat 702 of the conveyor belt. The groove of the left front rubber roller 708 can be engaged with the raised rectangular strip of the lower conveyor belt 704 to stabilize the bottom position of the lower conveyor belt 704, and the groove of the right front rubber roller 709 can be engaged with the raised rectangular strip of the upper conveyor belt 703 to stabilize the bottom position of the upper conveyor belt 703; Both the upper rubber roller 710 and the lower rubber roller 711 are cylindrical objects made of polyurethane material, with a height of 140 mm and a radius of 30 mm. There is a 15 - mm - wide groove in the middle;The upper rubber roller 710 and the lower rubber roller 711 are respectively transversely sleeved on the upper rubber roller 710 and the lower roller 711. The groove of the upper rubber roller 710 can engage with the raised rectangular strip of the upper conveyor belt 703 to drive the upper conveyor belt 703 to move. The groove of the lower rubber roller 711 can engage with the raised rectangular strip of the lower conveyor belt 704 to drive the lower conveyor belt 704 to move. Figure 3 As shown, the conveyor belt drive motor cover 712 is an aluminum alloy shell, shaped as an extended isosceles right trapezoid, 230mm high, with an upper base of 110mm and a lower base of 230mm. The five corners are rounded, and it is mainly used to fix and protect the conveyor belt drive structure 705.

[0027] The battery box 8 is mounted on the suspension beam of the frame 1, located between the cutting motor 202 and the main control unit 6, and its outer shell is made of plastic. The battery box 8 is rectangular in shape, with a length of 320mm, a width of 190mm, and a height of 190mm. It contains a rechargeable 48V battery. The battery box 8 is used to provide power to each unit and can be charged through the solar panel 11.

[0028] The collecting unit 9 is located at the rear of the harvester and mainly includes a collecting unit base 901, a gravity sensor 902, and a collecting basket 903. The collecting unit base 901 is fixedly mounted on the first U-shaped longitudinal beam 101, located at the rear of the frame 1, and level with the ground, serving to support the collecting basket 903. The gravity sensor 902 is mounted on the collecting unit base 901 to sense the weight of the collecting basket 903 and feed the data back to the main control unit 6. The collecting basket 903 is mainly used to collect the cut chives conveyed by the conveying unit 7. The collecting unit base 901 is made of aluminum alloy, with a rectangular hollow frame, and is 420 mm long. The weight is 340mm wide and 15mm high. There is a rectangular strip welded to the top and bottom edges on each side 115mm away from the left and right sides of the collection unit base 901. The collection unit base 901 is fixed to the first U-shaped longitudinal beam 101 by bolts. The gravity sensor 902 is a cuboid structure with a length of 88mm, a width of 22mm, and a height of 22mm. One end of it is suspended and the other end is threaded to the collection unit base 901 and electrically connected to the main control unit 6. The collection basket 903 is a plastic cuboid hollow basket structure with a length of 400mm, a width of 300mm, and a height of 200mm, and is placed on the collection unit base 901.

[0029] This invention features a high degree of automation and can be remotely controlled via external devices. It allows for adjustment of the moving speed, as well as the operating speed of the cutting mechanism and conveyor belt, thus adapting to different chive planting densities and improving harvesting efficiency.

Claims

1. A leek harvester, comprising a frame (1), a cutting unit (2), a walking unit (5), a main control unit (6), a conveying unit (7), and a collecting unit (9), characterized in that: The frame (1) is a symmetrical metal frame with the body inclined to the horizontal plane; the frame (1) consists of a first U-shaped longitudinal beam (101), a second U-shaped longitudinal beam (102), and a third U-shaped longitudinal beam (103) from the rear to the front. The top left of the U-shaped longitudinal beam is connected to the left crossbeam (104), and the top right of the U-shaped longitudinal beam is connected to the right crossbeam (105); a cantilever beam is welded to the bottom of the U-shaped longitudinal beam; the front of the left crossbeam (104) is the left support beam (106), and the front of the right crossbeam (105) is the right support beam (107); the outer shell (10) is connected to the frame (1) by bolts; a solar panel (11) is installed on the upper part of the outer shell (10); the cutting unit (2) includes a cutting mechanism adjustment fixing seat (201), a cutting motor (202), a cutting drive shaft (203), a cutting bracket (204), and a cutting blade (2 05) and the lifting device (4); the cutting mechanism adjustment fixing seat (201) is bolted to the frame (1) to support the cutting bracket (204) and adjust the height of the cutting blade (205); the lifting device (4) has a stepped trapezoidal shape on the horizontal plane and a right trapezoidal shape on the vertical plane; the walking unit (5) includes a left front small wheel (501), a right front small wheel (502), a left rear large wheel (503), a right rear large wheel (504), a connecting rod (505), a left control speed motor (506) and a right control speed motor (507); the main control unit (6) can be remotely controlled; the conveying unit (7) makes the chives become horizontally transported during the backward conveying process; the collection unit (9) includes a gravity sensor (902) which can sense the weight of the collection basket (903) and feed back the data to the main control unit (6).

2. The leek harvester as described in claim 1, characterized in that: The frame (1) is a symmetrical metal frame made of aluminum alloy, with a horizontal length of 4630mm and a width of 1420mm; the left crossbeam (104) and the right crossbeam (105) are 4630mm long, made of aluminum alloy, and have a hollow rectangular cross section; the outer shell (10) is made of acrylic and is a rectangular body covering the frame (1); the top front surface of the outer shell (10) is a rectangular plate with a length of 1150mm and a width of 470mm, on which a solar panel (11) is installed.

3. The leek harvester as described in claim 2, characterized in that: The solar panel (11) is made of crystalline silicon and is located on the outer shell (10) and bonded to the outer shell (10).

4. The leek harvester as described in claim 1, characterized in that: The cutting mechanism adjustment fixing seat (201) is located at the front of the harvester, about 10 cm in front of the left front fixing seat (701) and the right front fixing seat (702) of the conveyor belt, and has slots on both sides; the cutting motor (202) is a horizontal cylinder with a base radius of 50 mm and a height of 130 mm; the bottom of the cutting motor (202) is bolted to the second U-shaped longitudinal beam (102), and the output end is a round concave spur gear; the cutting drive shaft (203) is a horizontal cylinder with a rear end core of A circular convex spur gear meshes with a cutting motor (202); the upper part of the cutting bracket (204) is a vertical cylinder, and the lower part is a triangular prism; the rear end of the upper vertical cylinder of the cutting bracket (204) has a round hole that is threaded to the cutting drive shaft (203); the lower part of the triangular prism of the cutting bracket (204) has a slot that can be inserted into the cutting blade (205) and fixed by screws; the cutting blade (205) is a three-toothed blade; the rice lifter (4) includes a left rice lifter (401) and a right rice lifter (402).

5. A leek harvester as described in claim 4, characterized in that: The horizontal shape of the rice harvester (4) is a stepped trapezoid with a height of 170mm, an upper base length of 470mm, and a lower base length of 510mm. A 90mm long and 35mm wide rectangle is cut off from the outer edge of the lower base. There are holes 10mm from the front edge and 10mm from the outer edge of the horizontal surface for bolt connection with the left crossbeam (104) and the right crossbeam (105). The vertical shape of the rice harvester (4) is a right trapezoid with a height of 170mm, an upper base length of 200mm, and a lower base length of 250mm. The right angle side of the vertical surface is glued to the hypotenuse of the horizontal surface or formed as one piece. The included angle between the two surfaces is 100°.

6. A leek harvester as described in claim 1, characterized in that: The walking unit (5) is arranged at the bottom of the frame (1) to support the harvester and provide power for the forward movement and steering of the harvester; the left speed control motor (506) drives the left rear large wheel (503) to rotate, and the right speed control motor (507) drives the right rear large wheel (504) to rotate. The left rear large wheel (503) and the right rear large wheel (504) are movably connected to the connecting rod (505); the left front small wheel (501) is made of polyurethane, with a radius of 70 mm and a thickness of 30 mm. The inner ring of the left front small wheel (501) is connected with an outer "L"-shaped hollow aluminum alloy frame. The horizontal rod of the aluminum alloy frame faces the outside of the leek harvester, and the vertical rod is bolted to the left support beam (106) and can be adjusted in height; the right front small wheel (502) is made of polyurethane, with a small wheel radius of 70 mm and a thickness of 30 mm. The inner ring of the right front small wheel (502) is connected with an outer "L"-shaped hollow aluminum alloy frame. The horizontal rod of the aluminum alloy frame faces the outside of the leek harvester, and the vertical rod is bolted to the right support beam (107) and can be adjusted in height; the left rear large wheel (503) and the right rear large wheel (504) have a rubber tread and an aluminum alloy inner core, with a radius of 340 mm and a width of 80 mm; the connecting rod (505) is a round aluminum alloy rod with a length of 350 mm; the left speed control motor (506) and the right speed control motor (507) are cylindrical, with an aluminum alloy shell, a radius of 50 mm, and a height of 150 mm; the main control unit (6) is electrically connected to the left speed control motor (506) and the right speed control motor (507).

7. A leek harvester as described in claim 1, characterized in that: The main control unit (6) is located on the suspension beam under the frame (1), between the two rear large wheels. It has a rectangular acrylic material protective shell, with a length of 310 mm, a width of 170 mm, and a height of 190 mm. Inside the acrylic material protective shell, a rectangular acrylic placement board is adhesively bonded, and a development board control board is threadedly connected to the placement board.

8. A leek harvester as described in claim 1, characterized in that: The conveying unit (7) includes a conveyor belt left front fixing seat (701), a conveyor belt right front fixing seat (702), an upper conveyor belt (703), a lower conveyor belt (704), a conveyor belt driving structure (705), an upper roller (706), a lower roller (707), a left front rubber roller (708), a right front rubber roller (709), an upper rubber roller (710), a lower rubber roller (711), and a conveyor belt driving motor cover (712); both the conveyor belt left front fixing seat (701) and the conveyor belt right front fixing seat (702) are made of aluminum alloy, and are in the shape of a "匚"-shaped fixing seat. The vertical surface is on the outside of the frame (1), in the shape of a vertical rectangle with a length of 200 mm, closely attached to the frame (1), and there are bolts at the top and bottom to lock and fix it to the frame (1). The inner horizontal rectangle has a length of 190 mm, and there are holes punched in the upper and lower parts of the horizontal rectangle. The conveyor belt left front fixing seat (701) is fixed to the left front rubber roller (708) through an insertion hole, and the conveyor belt right front fixing seat (702) is fixed to the right front rubber roller (709) through an insertion hole; the upper conveyor belt (703) and the lower conveyor belt (704) are sponge material rectangular strips.

9. A leek harvester as described in claim 8, characterized in that: The conveyor belt drive structure (705) is located at the rear of the right crossbeam (105) and includes a drive motor, a large gear, two small gears, and a chain. The drive motor starts and drives the connected large gear to rotate. The rotation of the large gear drives the chain to move. The chain, through two small gears connected to the upper roller (706) and lower roller (707), drives both to rotate, thereby driving the entire conveyor unit (7) to rotate. The conveyor belt drive structure (705) is electrically connected to the main control unit (6) and is controlled by the main control unit (6). Both the upper roller (706) and lower roller (707) are... It is a round rod made of aluminum alloy with a length of 480mm. One end near the conveyor belt drive structure (705) is fixedly connected to the pinion gear. The pinion gear rotates to drive the rod to rotate. The other end is movably connected to the frame (1). The upper roller (706) has the upper rubber roller (710) fixed in the middle. The upper rubber roller (710) rotates by rotating itself. The lower roller (707) has the lower rubber roller (711) fixed in the middle. The lower rubber roller (711) rotates by rotating itself. The left front rubber roller (708) and the right front rubber roller (709) are both cylindrical objects made of polyurethane.

10. A leek harvester as described in claim 1, characterized in that: The battery box (8) is equipped with a rechargeable 48V battery that can be charged by a solar panel (11); the gravity sensor (902) is installed on the base (901) of the collection unit, with one end suspended and the other end threadedly connected to the base (901) of the collection unit and electrically connected to the main control unit (6).

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