A combined harvester for green onions

Abstract

A kind of big green onion combine harvester, including frame, be equipped with cab on frame, both sides of frame are equipped with walking track.The positive effect of the utility model is in at: a kind of big green onion combine harvester described in the utility model, engine and gearbox are arranged in the rear side position of frame, fundamentally solve the interference problem of long stem big green onion in the harvesting lifting process with front gearbox, this layout design makes the harvester when facing long diameter big green onion, can smoothly complete the action of digging and lifting, need not adjust operating parameter because of worrying interference, greatly improve the adaptability of harvester under different working conditions, whether it is large-scale concentrated planting area or small area of scattered planting plot, can high-efficiency operation.

Description

Technical Field

[0001] This utility model relates to the field of agricultural machinery and equipment technology, specifically a scallion combine harvester. Background Technology

[0002] Currently available scallion combine harvesters typically have their mechanical gearboxes mounted at the front of the harvester. However, in northern my country, a major scallion-growing region, the scallions grown are long-stemmed crops. During harvesting, when digging and lifting the scallions, the stalks interfere with the gearbox at the front, significantly limiting the harvester's adaptability to different working conditions. Furthermore, this front-mounted gearbox design introduces other problems. Because of the gearbox's front position, the front digging device has to be excessively long, significantly increasing the turning radius when the harvester turns. This results in a significant need for manual labor at the field edge during harvesting, preventing the full utilization of mechanical harvesting advantages and ultimately impacting the overall efficiency of mechanized harvesting operations.

[0003] Furthermore, current harvesters have significant shortcomings in the digging process, failing to dig thoroughly enough and leaving a large amount of soil still attached to the roots of the scallions. During the lifting process, this excess soil exerts a pulling force on the scallions, easily causing them to fall or break. This not only reduces the quality of the scallions and results in waste, but also requires a significant amount of manpower for bundling after harvesting, further increasing the cost of harvesting the scallions. Utility Model Content

[0004] The purpose of this invention is to provide a scallion combine harvester, which places the engine and gearbox at the rear of the frame to avoid interfering with the harvesting and lifting of long-stemmed scallions. At the same time, the U-shaped shovel, which acts as a digger, can enter a designated depth within the ridge, and the vibrating grid frame, which can swing up and down, assists in lifting the scallions, minimizing the dropping and breaking of scallions, thus solving the problems in the prior art.

[0005] The technical solution adopted by this utility model to solve its technical problem is as follows: a scallion combine harvester, including a frame, a driver's cab on the frame, and tracks on both sides of the frame. An engine and a gearbox are installed on the rear side of the frame, with the output shaft of the gearbox connected to the power input shaft of the tracks. A swingable front support frame is hinged to the front side of the frame via a lifting cylinder. A U-shaped shovel is installed at the end of the front support frame away from the frame. Soil-removing plows are installed on both sides of the front support frame of the U-shaped shovel. A vibrating grid frame that can swing up and down is hinged to the bottom of the U-shaped shovel. An inclined scallion clamping and conveying mechanism is also installed on the front support frame. The front end of the scallion clamping and conveying mechanism is located on the upper side of the U-shaped shovel. A displacement disc mechanism is provided at the lower part of the rear end of the scallion clamping and conveying mechanism. A sorting conveyor belt is provided on the frame behind the displacement disc mechanism. The sorting conveyor belt is arranged perpendicular to the length direction of the scallion clamping conveyor. A baling machine is installed on the frame at one end of the sorting conveyor belt. The scallion clamping conveyor includes a conveyor frame arranged side by side. Each conveyor frame is equipped with a flexible clamping belt. A gap is left between the flexible clamping belts on both sides to clamp the scallions. A drive roller that cooperates with the flexible clamping belt is installed on the conveyor frame. A drive motor is installed on the shaft of the drive roller. The displacement disc mechanism includes a vertical frame set on the frame. Two elastic discs that can rotate synchronously are installed on the vertical frame. The upper part of the rear side of the two elastic discs is in contact with each other, and the rest of the circumference is open. A rotary motor is also installed on the vertical frame. The rotary motor is connected to the shaft of the elastic disc. When the elastic disc rotates, it can place the vertically positioned scallions in the scallion clamping conveyor onto the sorting conveyor belt horizontally. Both sides of the front support frame are provided with mounting plates, each with several through holes of different heights. The U-shaped shovel has several first insertion holes that mate with these through holes, and first bolts are fitted into these holes and the first insertion holes. The front support frame also has a slot frame with several second insertion holes of different heights. The soil-removing plow has an insertion plate that mates with the slot frame, and the insertion plate has through holes that mate with these second insertion holes, and second bolts are fitted into these holes and the through holes. A first swing motor is mounted on the U-shaped shovel, and a first cam is mounted on the output shaft of the first swing motor. A first transmission rod is hinged between the first cam and the vibrating grid frame. When the first swing motor is activated, it drives the vibrating grid frame to swing up and down relative to the U-shaped shovel.The conveyor frame is equipped with an elastic support mechanism that can tension the flexible clamping belt. The elastic support mechanism includes several elastic support units arranged along the length of the conveyor frame. Each elastic support unit includes a rotatable vertical shaft mounted on the conveyor frame. A first tensioning plate and a second tensioning plate are provided on the vertical shaft. The first tensioning plate is located below the second tensioning plate. A tensioning wheel that contacts the inner circumference of the flexible clamping belt is installed at the end of the first tensioning plate. Several connecting holes are provided on the second tensioning plate. A tension spring is installed between the connecting holes between adjacent elastic support units and the vertical shaft. The tension spring always tends to pull the tensioning wheel to tension the flexible clamping belt. The bottom of the conveyor frame is equipped with a swing cleaning mechanism, which includes a rotating shaft and a second swing motor mounted on the conveyor frame. A soil-beating plate arranged along the length direction is mounted on the rotating shaft. A second cam is mounted on the output shaft of the second swing motor, and a second transmission rod is hinged between the second cam and the soil-beating plate. When the second swing motor is activated, it drives the soil-beating plate to vibrate and clean the roots of the scallions. A rotatable secondary cleaning brush roller is also mounted on the bottom of the conveyor frame behind the swing cleaning mechanism. A depth-limiting wheel is mounted on one side of the front support frame. A vertical post is located at the upper part of the front end of the conveyor frame, and a leaf-dispensing roller is mounted on the post. The leaf-dispensing roller is arranged parallel to the length direction of the flexible clamping belt. A rotary motor is mounted on the post, and the output shaft of the rotary motor is connected to the rotating shaft of the leaf-dispensing roller.

[0006] The positive effects of this utility model are as follows: The scallion combine harvester described in this utility model has the engine and gearbox located at the rear of the frame, which fundamentally solves the problem of interference between long-stemmed scallions and the front gearbox during the harvesting and lifting process. This layout design allows the harvester to smoothly complete the digging and lifting actions when facing long-diameter scallions without having to adjust the operating parameters due to concerns about interference. This greatly improves the adaptability of the harvester under different working conditions, enabling efficient operation in both large-scale concentrated planting areas and small, scattered planting plots.

[0007] Because the gearbox is located at the rear, the front-end digging device does not need to be designed to be excessively long, resulting in a more compact and rational overall structure. When the harvester is turning, the shorter digging device significantly reduces the turning radius, making operation more flexible and convenient. This allows the harvester to more easily complete turning operations at the edge of the field, reducing the need for manual intervention in harvesting at the edge, fully leveraging the advantages of mechanized harvesting, greatly improving the overall efficiency of mechanized harvesting operations, and saving time and labor costs.

[0008] By adjusting the height of the front support frame, the depth to which the U-shaped shovel enters the ridges can be adjusted as needed, ensuring thorough digging of the scallions during actual operation. Combined with a vibrating grid frame that can swing up and down, it shakes away the soil attached to the scallion roots and assists in lifting and clamping the scallions, reducing the pulling force of excess soil. The flexible clamping belt further minimizes scallion drop and breakage, improving scallion quality. With the addition of a displacement disc mechanism, a sorting conveyor belt, and a baler, the harvested scallions can be manually sorted and automatically baled during machine harvesting, reducing labor costs and lowering the overall harvesting cost. Attached Figure Description

[0009] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is the front view of this utility model; Figure 3 yes Figure 2 The left view; Figure 4 yes Figure 2 The top view is rotated 90 degrees counterclockwise; Figure 5 This is a schematic diagram of the scallion clamping and conveying mechanism; Figure 6 This is a schematic diagram of the displacement disk mechanism; Figure 7 This is a simplified schematic diagram illustrating the process by which a displacement disc mechanism transfers scallions from a flexible clamping belt to a sorting conveyor belt. Figure 8 This is a schematic diagram of a U-shaped shovel mounted on the front support frame; Figure 9 This is a schematic diagram of the installation of the U-shaped shovel and the vibrating grid frame; Figure 10 This is a structural schematic diagram of the elastic support unit on the conveyor frame; Figure 11 This is a schematic diagram of the swing-type soil-clearing mechanism. Detailed Implementation

[0010] The present invention describes a scallion combine harvester, such as... Figure 1-4 As shown, the equipment includes a frame 1, on which a driver's cab 10 is mounted. Tracks 2 are mounted on both sides of the frame 1 to control the movement of the entire equipment. The width of the tracks 2 is suitable for the movement of a single row of scallions. An engine 3 and a gearbox 4 are mounted at the rear of the frame 1. The output shaft of the gearbox 4 is connected to the power input shaft of the tracks 2 to provide power for movement.

[0011] The transmission 4 can be an existing HST hydrostatic continuously variable transmission, designed as a rear-mounted, rear-drive system, enabling long-distance flexible shaft control and avoiding interference with the harvesting of long-stemmed scallions. Due to the rear-mounted configuration of engine 3 and transmission 4, the front-end digging device does not need to be excessively long, resulting in a more compact and rational overall structure. When the harvester turns, the shorter digging device significantly reduces the turning radius, making operation more flexible and convenient. This allows the harvester to more easily complete field-end turning operations, reducing the need for manual intervention in the harvesting process at the field end, fully leveraging the advantages of mechanized harvesting, greatly improving the overall efficiency of mechanized harvesting operations, and saving time and labor costs.

[0012] A swingable front support frame 6 is hinged to the front side of the frame 1 via a lifting cylinder 5. A U-shaped shovel 7 is installed at the end of the front support frame 6 away from the frame 1. Soil-removing plows 8 are installed on both sides of the front support frame 6 of the U-shaped shovel 7. A vibrating grid frame 9 that can swing up and down is hinged to the bottom of the U-shaped shovel 7. The U-shaped shovel 7, soil-removing plow 8, and vibrating grid frame 9 form the digging mechanism. The soil-removing plow 8 can turn a large amount of soil from the top of the ridge to both sides to reduce the resistance of the U-shaped shovel 7. The U-shaped shovel 7 can then enter the bottom of the scallion in the ridge to loosen the soil. The vibrating grid frame 9 at the bottom of the U-shaped shovel 7 can vibrate the scallion and the soil attached to its roots and lift it upwards to detach it from the soil. This structure combines upper soil removal, lower digging, and shaking and lifting actions to dig the scallion out of the ridge and shake off the soil. The vibrating grid frame 9 reduces the adhesion between the scallion and the soil, thereby minimizing the occurrence of scallion drop and breakage, and improving the integrity and quality of the scallion at harvest.

[0013] The front support frame 6 is hinged to the front of the frame 1. Its rotation point can be directly utilized by the front crossbeam of the frame 1 chassis, thus shortening the length of the front support frame 6 and making it more convenient for the equipment to turn. The piston rod extension and retraction of the lifting cylinder 5 can drive the U-shaped shovel 7 to lift up or lower into the ridge. When not in operation, the U-shaped shovel 7 needs to be lifted up to leave the ground. When in operation, the U-shaped shovel 7 lowers into the ridge to loosen the soil and follows the movement of the equipment to achieve soil loosening and excavation along the length of the ridge.

[0014] After the scallions are dug out of the ridges, they need to be transported. The front support frame 6 is also equipped with an inclined scallion clamping and conveying mechanism. The front end of the scallion clamping and conveying mechanism is located on the upper side of the U-shaped shovel 7. The lower part of the rear end of the scallion clamping and conveying mechanism is equipped with a displacement disc mechanism. The frame 1 behind the displacement disc mechanism is equipped with a sorting conveyor belt 45. The sorting conveyor belt 45 is arranged perpendicular to the length direction of the scallion clamping and conveying mechanism. A baler 11 is equipped on the frame 1 at one end of the sorting conveyor belt 45.

[0015] After being excavated and lifted by the U-shaped shovel 7, the scallions enter the scallion clamping and conveying mechanism and are then transported to the displacement disc mechanism. After being reversed by the displacement disc mechanism, the scallions, which were originally held vertically, rotate 90 degrees and fall horizontally onto the sorting conveyor belt 45. After being manually sorted, they enter the baling machine 11 for baling. The baling machine 11 can be an existing Chinese patent with patent number "CN202421988830.5": Fully Automatic Scallion Baling Machine, which can realize the automatic baling operation of scallions.

[0016] Traditional harvesting equipment typically bundles and transports scallions without sorting, allowing mold, bacteria, and other microorganisms from spoiled or rotten scallions to rapidly proliferate and infect surrounding healthy scallions. Leafy vegetables are delicate and have a large surface area, making them highly susceptible to the rapid spread of pathogens through stomata or wounds. This release of moisture and heat creates excessively high local temperature and humidity, leading to a surge in spoilage and significantly reducing the quality of the scallions. The scallion combine harvester of this invention features a manual sorting station on one side of the sorting conveyor belt 45, allowing for manual sorting of scallions after they are horizontally placed on the belt, ensuring the quality of the scallions for subsequent bundling. This structure enables direct bundling of the sorted scallions, integrating harvesting, sorting, and bundling into a single operation, greatly improving the automation and efficiency of scallion harvesting while reducing harvesting costs.

[0017] like Figure 5 As shown, the scallion clamping and conveying mechanism includes side-by-side conveyor frames 12, each equipped with a flexible clamping belt 13. A gap is left between the flexible clamping belts 13 on both sides to clamp the scallions. A drive roller 14, which cooperates with the flexible clamping belts 13, is installed on the conveyor frame 12. A drive motor 15 is mounted on the shaft of the drive roller 14. By driving the drive roller 14 with the drive motor 15, the flexible clamping belts 13 on both sides can rotate synchronously in opposite directions. The flexible clamping belts 13 can be made of sponge. As the equipment moves forward, after the scallions are dug and lifted from the ridge, they can be clamped and pulled out through the gap between the flexible clamping belts 13 and lifted obliquely. The design of the flexible clamping belts 13 ensures both a firm grip on the scallions and avoids damage, ensuring the integrity of the scallions during the conveying process.

[0018] After the scallion is lifted to the end position of the scallion clamping and conveying mechanism, it is located above the displacement disc mechanism, such as... Figure 6 and Figure 7As shown, the displacement disc mechanism includes a stand 16 mounted on the frame 1. Two elastic discs 17, capable of synchronous rotation, are mounted on the stand 16. The upper rear parts of the two elastic discs 17 are in contact with each other, while the remaining circumference is open, allowing them to receive and hold the scallions from the conveyor mechanism and synchronously rotate them until they fall horizontally onto the sorting conveyor belt 45. A rotary motor 18 is also mounted on the stand 16. The rotary motor 18 is connected to the shaft of the elastic discs 17. When the rotary motor 18 is activated, it drives the elastic discs 17 to rotate, thus transferring and displacing the scallions.

[0019] The contact points of the elastic discs 17 can limit the movement of the scallions on-site. After the scallions fall into the positions between the elastic discs 17, the roots of the scallions are clamped and can rotate synchronously with the elastic discs 17. When the scallions are rotated to the opening angle, they can fall horizontally onto the sorting conveyor belt 45, realizing the transformation of the scallions from a vertical to a horizontal state, so that they can fall onto the sorting conveyor belt 45 for subsequent conveying, sorting and bundling operations. This makes the entire harvesting process smoother and more efficient, reducing manual operation and labor intensity.

[0020] When using the scallion combine harvester described in this utility model, the equipment is moved to the desired ridge position. The U-shaped shovel 7 is inserted into the root position of the scallion in the ridge at the set depth and moves along the length of the ridge. The soil-removing plow 8 turns the soil on the ridge to both sides. The U-shaped shovel 7 and the vibrating grid frame 9 dig and shake the scallion to lift it up. The lifted scallion will enter the scallion clamping and conveying mechanism. Under the conveying of the flexible clamping belt 13, it moves to the displacement disc mechanism. The rotation of the elastic disc 17 changes the vertical scallion to a horizontal position and falls onto the sorting conveyor belt 45. After being manually sorted, it enters the baler 11 for baling and collection, completing the high-quality and high-efficiency combined harvesting of scallions.

[0021] Furthermore, to accommodate scallions of different lengths and allow the U-shaped shovel 7 to reach a designated depth within the planting ridge to excavate the roots, the U-shaped shovel 7 can be adaptively installed at different heights on the front support frame 6. For example... Figure 8 As shown, both sides of the end of the front support frame 6 are provided with mounting plates 19. The mounting plates 19 have several through holes of different heights. The U-shaped shovel 7 has several first insertion holes 20 that cooperate with the through holes. First bolts 21 are installed in the through holes and the first insertion holes 20. By adjusting the insertion of the first bolts 21 into the through holes at different heights, the height position of the U-shaped shovel 7 on the front support frame 6 can be adjusted, and the digging depth can be adjusted according to the length of the scallion.

[0022] To adapt the installation height of the soil-removing plow 8 to the digging depth of the U-shaped shovel 7, a slot frame 22 is provided at the end of the front support frame 6. The slot frame 22 has several second insertion holes 23 at different heights. The soil-removing plow 8 has an insertion plate 24 that cooperates with the slot frame 22. The insertion plate 24 has through holes that cooperate with the second insertion holes 23. Second bolts 25 are installed in the second insertion holes 23 and through holes. By adjusting the second insertion holes 23 and through holes at different heights of the second bolts 25, the installation height of the soil-removing plow 8 can be adjusted according to the digging depth requirements.

[0023] Furthermore, in order to achieve the up-and-down swing drive of the vibrating grid frame 9, such as... Figure 9 As shown, a first swing motor 26 is installed on the U-shaped shovel 7, a first cam 27 is installed on the output shaft of the first swing motor 26, and a first transmission rod 28 is hinged between the first cam 27 and the vibrating grid frame 9. The first transmission rod 28 is located at the protruding end of the first cam 27. When the first swing motor 26 is started, it can drive the vibrating grid frame 9 to swing up and down relative to the U-shaped shovel 7.

[0024] Furthermore, to achieve adaptability of the flexible clamping straps 13 on both sides to the scallions, an elastic support mechanism is installed on the conveyor frame 12 to tension the flexible clamping straps 13. This elastic support mechanism supports and tensions the flexible clamping straps 13, using the gap between them and appropriate tension to clamp, pull out, and lift the scallions. Figure 10 As shown, the elastic support mechanism includes several elastic support units arranged along the length of the conveyor frame 12. Each elastic support unit includes a vertical shaft 29 that can rotate and is mounted on the conveyor frame 12. A first tension plate 30 and a second tension plate 31 are provided on the vertical shaft 29. The first tension plate 30 is located below the second tension plate 31. The vertical shaft 29 can drive the two tension plates to rotate synchronously.

[0025] A tensioning wheel 32, which contacts the inner circumference of the flexible clamping band 13, is installed at the end of the first tensioning plate 30. A plurality of connecting holes 33 are provided on the second tensioning plate 31. A tension spring 34 is installed between the connecting holes 33 between adjacent elastic support units and the vertical shaft 29. The tension spring 34 always tends to pull the tensioning wheel 32 to tension the flexible clamping band 13. By attaching the connecting holes 33 at different positions, the initial support force of the tension spring 34 on the tensioning wheel 32 can be adjusted to accommodate different diameter varieties of scallions.

[0026] The tension spring 34 in the elastic support unit always tends to pull the tensioning wheel 32 to tighten the flexible clamping belt 13, ensuring that the flexible clamping belt 13 always maintains a suitable tension during operation, avoiding problems such as loose clamping or poor conveying caused by the slack of the clamping belt, and improving the stability and reliability of the clamping and conveying mechanism.

[0027] Furthermore, in order to clean the soil adhering to the roots of the scallions during the conveying process, a swing-type soil-cleaning mechanism is installed at the bottom of the conveying frame 12, such as... Figure 11 As shown, the oscillating soil-cleaning mechanism includes a rotating shaft 35 and a second oscillating motor 36 mounted on the conveyor frame 12. The rotating shaft 35 is provided with a soil-beating plate 37 arranged along the length direction. A second cam 38 is mounted on the output shaft of the second oscillating motor 36. A second transmission rod 39 is hinged between the second cam 38 and the soil-beating plate 37. When the second oscillating motor 36 is started, it can drive the soil-beating plate 37 to vibrate and clean the soil at the root position of the scallion.

[0028] The soil-beating plate 37, by swinging itself, causes the stems of the scallions to swing left and right, achieving a shaking action to remove most of the attached soil. Simultaneously, the contact between the soil-beating plate 37 and the scallions will not damage them, thus not affecting their quality. To further clean the soil around the scallion roots, a rotating secondary soil-cleaning brush roller 40 is installed at the bottom of the conveyor frame 12 behind the swinging soil-cleaning mechanism. A motor can be mounted on the shaft of the secondary soil-cleaning brush roller 40, driving it to rotate. As the scallions pass over the secondary soil-cleaning brush roller 40 during transport via the flexible clamping belt 13, the attached soil around the scallion roots is rotated and removed. This dual soil-cleaning design significantly reduces the amount of soil adhering to the roots of the scallions after harvest, reduces the workload of subsequent processing, and improves the cleanliness of the scallions.

[0029] To prevent the U-shaped shovel 7, the soil-removing plow 8, and the downward pressure of their weight from causing the entire excavation mechanism to sink, a depth-limiting wheel 41 is installed on one side of the front support frame 6. During actual operation, the depth-limiting wheel 41 is always located at the ground surface, and the depth into the ridge can be adjusted by adjusting the installation height of the depth-limiting wheel 41.

[0030] To facilitate the entry of scallions from the ridges into the flexible clamping belt 13, a vertical pole 44 is provided at the upper front end of the conveyor frame 12. A leaf-pulling roller 42 is mounted on the vertical pole 44, arranged parallel to the length of the flexible clamping belt 13. A rotary motor 43 is mounted on the vertical pole 44, and the output shaft of the rotary motor 43 is connected to the rotating shaft of the leaf-pulling roller 42. The leaf-pulling roller 42 can gather scallions from the same ridge, ensuring that the scallions can be clamped and lifted into the flexible clamping belt 13 during the device's movement.

[0031] This utility model discloses a scallion combine harvester, which adopts advanced hydrostatic continuously variable transmission technology and features a rear-mounted drive wheel design to meet the needs of combined scallion harvesting, improving harvesting efficiency and speed. The adjustable digging depth enhances the smoothness of chassis handling. It is adaptable to different types of scallions, achieving a minimal turning radius at low speeds, enhancing overall machine flexibility and further improving harvesting quality. The excellent flexible gripping of scallions significantly reduces dropping and damage. The oscillating soil-cleaning mechanism mimics manual movement, and the secondary soil-cleaning brush rollers with 40 pairs of brushes on the scallion roots provide a significant soil-cleaning effect. During the output process, the conveyor positioning device ensures stable performance from upright to horizontal position, the sponge clamping belt has a long service life, and the positioning process is highly efficient and stable, avoiding uneven or incomplete placement. Both the scallion clamping and lifting soil-cleaning device and the disc-type positioning device are adjustable to accommodate harvesting scallions of different lengths. Baling scallions is faster than manual baling, produces more consistent bales, ensures quality control, and increases work efficiency while reducing labor. This machine can automate the entire harvesting process, is highly automated, minimizes soil residue on the scallions, prevents damage, and quickly bales them, resulting in high production efficiency and reduced labor intensity. The bales are then directly loaded onto trucks for transport. This machine integrates scallion digging, soil removal, sorting, and baling functions into one comprehensive machine, making it a true combine harvester.

[0032] This utility model of a scallion combine harvester has significant advantages in overall structural layout, digging and lifting, clamping, conveying and soil clearing, displacement and post-processing through a series of innovative designs. It effectively solves the problems existing in the current scallion combine harvesters, improves the quality and efficiency of scallion harvesting, reduces labor intensity and harvesting costs, and has broad market application prospects and promotion value.

[0033] The technical solution of this utility model is not limited to the scope of the embodiments described herein. All technical contents not described in detail herein are publicly known technologies.

Claims

1. A scallion combine harvester, characterized in that: The system includes a frame (1), on which a driver's cab (10) is mounted. Tracks (2) are mounted on both sides of the frame (1). An engine (3) and a gearbox (4) are mounted on the rear side of the frame (1). The output shaft of the gearbox (4) is connected to the power input shaft of the track (2). A swingable front support frame (6) is hinged to the front side of the frame (1) via a lifting cylinder (5). A U-shaped shovel (7) is mounted on the end of the front support frame (6) away from the frame (1). The two ends of the U-shaped shovel (7)... Each of the front support frames (6) on the side is equipped with a soil-removing plow (8). The bottom of the U-shaped shovel (7) is hinged with a vibrating grid frame (9) that can swing up and down. The front support frame (6) is also equipped with an inclined scallion clamping and conveying mechanism. The front end of the scallion clamping and conveying mechanism is located on the upper side of the U-shaped shovel (7). The lower part of the rear end of the scallion clamping and conveying mechanism is equipped with a displacement disc mechanism. The frame (1) on the rear side of the displacement disc mechanism is equipped with a sorting conveyor belt (45). The sorting conveyor belt (45) is parallel to the length direction of the scallion clamping and conveying mechanism. A baling machine (11) is installed on a frame (1) at one end of a conveyor belt (45) arranged perpendicularly to each other. The scallion clamping and conveying mechanism includes conveyor frames (12) arranged side by side. Each conveyor frame (12) is equipped with a flexible clamping belt (13). A gap for clamping scallions is left between the flexible clamping belts (13) on both sides. A drive roller (14) that cooperates with the flexible clamping belt (13) is installed on the conveyor frame (12). A drive motor (15) is installed on the shaft of the drive roller (14). The displacement disc mechanism includes... It includes a stand (16) mounted on a frame (1), on which two elastic discs (17) that can rotate synchronously are mounted. The upper part of the rear side of the two elastic discs (17) are in contact with each other, and the rest of the circumference is open. A rotary motor (18) is also mounted on the stand (16). The rotary motor (18) is connected to the rotating shaft of the elastic disc (17). When the elastic disc (17) rotates, it can place the vertically upright scallions in the scallion clamping and conveying mechanism horizontally onto the sorting conveyor belt (45).

2. The scallion combine harvester according to claim 1, characterized in that: The front support frame (6) has mounting plates (19) on both sides of its end. The mounting plates (19) have several through holes of different heights. The U-shaped shovel (7) has several first insertion holes (20) that cooperate with the through holes. The through holes and the first insertion holes (20) are fitted with first bolts (21). The front support frame (6) also has a slot frame (22) at its end. The slot frame (22) has several second insertion holes (23) of different heights. The soil plow (8) has a plate (24) that cooperates with the slot frame (22). The plate (24) has through holes that cooperate with the second insertion holes (23). The second insertion holes (23) and the through holes are fitted with second bolts (25).

3. The scallion combine harvester according to claim 1, characterized in that: The U-shaped shovel (7) is equipped with a first swing motor (26), and a first cam (27) is installed on the output shaft of the first swing motor (26). A first transmission rod (28) is hinged between the first cam (27) and the vibrating grid frame (9). When the first swing motor (26) is started, it can drive the vibrating grid frame (9) to swing up and down relative to the U-shaped shovel (7).

4. A scallion combine harvester according to claim 1, characterized in that: The conveyor frame (12) is equipped with an elastic support mechanism that can tension the flexible clamping belt (13). The elastic support mechanism includes several elastic support units arranged along the length of the conveyor frame (12). Each elastic support unit includes a vertical shaft (29) that can rotate on the conveyor frame (12). A first tensioning plate (30) and a second tensioning plate (31) are provided on the vertical shaft (29). The first tensioning plate (30) is located below the second tensioning plate (31). A tensioning wheel (32) that contacts the inner circumference of the flexible clamping belt (13) is installed at the end of the first tensioning plate (30). Several connecting holes (33) are provided on the second tensioning plate (31). A tension spring (34) is installed between the connecting holes (33) between adjacent elastic support units and the vertical shaft (29). The tension spring (34) always tends to pull the tensioning wheel (32) to tension the flexible clamping belt (13).

5. A scallion combine harvester according to claim 1, characterized in that: The bottom of the conveyor frame (12) is equipped with a swing cleaning mechanism. The swing cleaning mechanism includes a rotating shaft (35) and a second swing motor (36) set on the conveyor frame (12). The rotating shaft (35) is provided with a soil-patting plate (37) arranged along the length direction. A second cam (38) is installed on the output shaft of the second swing motor (36). A second transmission rod (39) is hinged between the second cam (38) and the soil-patting plate (37). When the second swing motor (36) is started, it can drive the soil-patting plate (37) to shake and clean the soil at the root position of the scallion. A rotatable secondary soil-cleaning brush roller (40) is also installed at the bottom of the conveyor frame (12) at the rear side of the swing cleaning mechanism.

6. A scallion combine harvester according to claim 1, characterized in that: A limited-depth wheel (41) is installed on one side of the front support frame (6). A vertical pole (44) is provided on the upper part of the front end of the conveyor frame (12). A leaf-pulling roller (42) is installed on the vertical pole (44). The leaf-pulling roller (42) is arranged parallel to the length direction of the flexible clamping belt (13). A rotary motor (43) is installed on the vertical pole (44). The output shaft of the rotary motor (43) is connected to the rotating shaft of the leaf-pulling roller (42).

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