Stem and leaf protection type combined harvesting device for wormwood harvesting

Abstract

The invention relates to a stem and leaf protection type combined harvesting device for wormwood harvesting. According to the stem and leaf protection type combined harvesting device for wormwood harvesting, by arranging the harvesting assembly, the effects of harvesting wormwood and turning the harvested wormwood can be effectively achieved in the using process of the harvesting assembly, and therefore the harvested wormwood can preferentially enter the interior of a feeding auger from the root; by means of the mode, the situation that the stem and leaf ends enter the auger firstly, so that the leaves are seriously damaged, and the effective components are lost can be effectively avoided; a driving gear is arranged and is in transmission connection with a folding unit, so that the effect of avoiding interference among the wormwood in the process of driving the wormwood to rotate by the adjusting table and the folding unit can be effectively ensured in the use process; in this way, the stability of wormwood position adjustment in the using process is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of wormwood harvesting devices, and particularly to a combined harvesting device with stem and leaf protection for wormwood harvesting. Background Art

[0002] As an important medicinal and economic crop, wormwood leaves are rich in active ingredients such as volatile oils and flavonoids, and have medicinal effects such as warming the meridian to stop bleeding and dispelling cold and relieving pain. They are widely used in the fields of traditional Chinese medicine clinical practice, health care, and daily chemical products. With the rapid development of the wormwood industry, the scale of planted area is constantly expanding, and the demand for efficient and low-loss mechanized harvesting technology is becoming increasingly urgent; At present, wormwood harvesting mainly relies on manual labor or general-purpose crop harvesting machinery. Manual harvesting has low efficiency and high labor intensity, and it is difficult to meet the needs of large-scale production; while general-purpose harvesting machinery (such as rice and wheat combine harvesters) has functions such as cutting and threshing, but lacks targeted design for the biological characteristics of wormwood. Most of the feeding devices of existing harvesters adopt forced feeding methods, and the wormwood stems and leaves are prone to extrusion and tearing in the high-speed rotating feeding rollers or augers, resulting in a leaf breakage rate of over 30%, affecting the quality of medicinal materials; In response to the above problems, although there have been some improvement attempts in the prior art, such as using flexible feeding rollers and optimizing the structure of the threshing drum, etc., the problem of leaf damage has not been fundamentally solved. Therefore, developing a combined harvesting device with stem and leaf protection that can adjust the dumping direction of wormwood after cutting and make the roots enter the auger first is of great significance for reducing leaf damage and improving the quality of wormwood harvesting. Summary of the Invention

[0003] In view of the deficiencies of the prior art, the present invention provides a combined harvesting device with stem and leaf protection for wormwood harvesting, which has advantages such as being able to adjust wormwood after harvesting, etc., and solves the problem of large losses to leaves caused by the stem and leaf ends entering the auger first in the prior art.

[0004] To achieve the above object, the present invention provides the following technical solution: A combined harvesting device with stem and leaf protection for wormwood harvesting, including a harvester main body for driving, and a harvesting assembly for harvesting wormwood is arranged on the harvester main body; The harvesting assembly includes a bucket for collecting the harvested wormwood and a reel for guiding the wormwood stems and leaves. A feeding auger for conveying the wormwood is arranged in the bucket. A harvesting knife for cutting the wormwood is arranged at one end of the bucket. The bucket is also provided with a plurality of adjusting assemblies for adjusting the dumping direction of the wormwood after cutting to make the roots of the wormwood enter the auger first; The described harvesting assembly further includes a transmission member for driving, the transmission member is drivingly connected to the reel, and a linkage member for assisting in transmission is further provided on the transmission member, and the linkage member is drivingly connected to a linkage assembly for realizing reciprocating motion; A linkage gear adapted to the number of the adjusting assemblies is provided at the bottom of the bucket, each linkage gear is in driving connection with the adjusting assembly, and a gear belt is connected between the plurality of linkage gears. A transmission gear is provided on one of the linkage gears, and the transmission gear is drivingly connected to the linkage assembly.

[0005] Further, the linkage assembly includes two mounting brackets mounted on the bottom of the bucket. Guide blocks are slidably connected in both mounting brackets. A connecting column is connected between the two guide blocks. Both ends of the connecting column penetrate through the guide blocks, and one end is connected to a driven member and the other end is connected to a second rack. The second rack meshes with the transmission gear.

[0006] Further, the output end of the linkage member is drivingly connected to a transmission disk, and a transmission boss is provided on the transmission disk. The transmission boss is slidably connected in the driven member.

[0007] Further, the adjusting assembly includes an annular gear fixedly mounted on the bucket and an adjusting table rotatably mounted on the bucket. The bottom of the adjusting table is fixedly connected to the linkage gear. The annular gear is located between the harvesting knife and the feeding auger; An installation groove is formed on the adjusting table, and a mounting seat is fixedly installed in the installation groove. A bidirectional lead screw is rotatably connected to the mounting seat. Both ends of the bidirectional lead screw are drivingly connected to a closing unit. One end of the bidirectional lead screw penetrates through the adjusting table and is provided with a driving gear, and the driving gear meshes with the annular gear.

[0008] Further, the closing unit includes a slider slidably connected in the installation groove. A threaded hole adapted to the bidirectional lead screw is formed on the slider. A closing column for closing the wormwood is provided on the threaded hole. A connecting shaft rotatably connected to the slider is provided at the bottom of the closing column, and a driven gear is fixedly connected to the bottom of the connecting shaft. A placement groove for installing the driven gear is formed on the slider.

[0009] Further, a sliding groove for facilitating the sliding of the driven gear is further formed on the adjusting table. A first rack is provided in the middle of the sliding groove. When the sliding groove slides to the position of the first rack, it can mesh with the first rack.

[0010] Furthermore, the reel includes a transmission shaft connected to a transmission member. Both ends of the transmission shaft are provided with transmission wheels for installation. A plurality of support arms are installed on both transmission wheels. A plurality of mounting rods for guiding wormwood are installed on both support arms. A plurality of comb teeth for combing wormwood are provided on the mounting rods.

[0011] Furthermore, the comb teeth are composed of two straight rods. One end of the two straight rods is installed on the mounting rod, and the other end is connected by a V-shaped bending rod.

[0012] Furthermore, the distance between the two straight rods is equal to the distance between the closing units on two adjacent adjustment platforms. The distance between two comb teeth is equal to the distance when the two closing units are opened to the maximum.

[0013] Furthermore, one end of the transmission shaft is also drivingly connected to an eccentric wheel. Connecting arms adapted to the number of support arms are provided on the eccentric wheel. Support members for supporting the mounting rods are provided at the ends of the connecting arms.

[0014] Compared with the prior art, the technical solution of the present application has the following beneficial effects: 1. For the stem and leaf protection type combined harvesting device for wormwood harvesting, by providing a harvesting component, it can effectively harvest wormwood and reverse the direction of the harvested wormwood during use, so that the harvested wormwood can preferentially enter the inside of the feeding auger from the root. This method can effectively avoid the situation that the leaves are severely damaged and the active ingredients are lost when the stem and leaf ends enter the auger first.

[0015] 2. For the stem and leaf protection type combined harvesting device for wormwood harvesting, by providing a transmission disk and a transmission boss, it can drive the driven member to perform a reciprocating motion, so that the second rack can drive the transmission gear and the linkage gear to make the adjustment component achieve the effect of swapping the positions of wormwood. This transmission method can enable the adjustment component to continuously swap the positions of the subsequently cut wormwood, and only one driving source is required to complete it. The structure is simple and the use cost is lower.

[0016] 3. For the stem and leaf protection type combined harvesting device for wormwood harvesting, by providing a driving gear and drivingly connecting it to the closing unit, it can effectively ensure that there is no interference between wormwood during the process of driving the wormwood to rotate by the adjustment platform and the closing unit, so as to achieve the stability of the wormwood position adjustment during use.

[0017] 4. The stem and leaf protection type combined harvesting device for wormwood can ensure that during the displacement of the slider, the wormwood can be gathered and effectively conveyed at the same time by setting a driven gear and a first rack and enabling them to mesh with each other, so that the wormwood bundle can smoothly enter the feeding auger.

[0018] 5. The stem and leaf protection type combined harvesting device for wormwood has the comb teeth composed of two straight rods. One end of the two straight rods is installed on the mounting rod, and the other end is connected by a V-shaped bending rod. The distance is equal to the distance between the gathering units on two adjacent adjusting platforms, and the distance between the two comb teeth is equal to the distance when the two gathering units are opened to the maximum. This setting can reduce the distance between multiple wormwoods during the guiding process of the wormwood, achieving the effect of harvesting them in bundles. Thus, under the action of the adjusting component, the roots of the bundled wormwood enter the feeding auger first. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of the present invention; Figure 2 is a schematic bottom structural diagram of the present invention; Figure 3 is a schematic structural diagram of the reel of the present invention; Figure 4 is a schematic structural diagram of the linkage assembly of the present invention; Figure 5 is a schematic structural diagram of the adjusting assembly of the present invention; Figure 6 is a schematic structural diagram of the gathering unit of the present invention.

[0020] In the figure: 1. Harvester main body; 11. Harvesting assembly; 12. Transmission part; 13. Linkage part; 131. Transmission disk; 132. Transmission boss; 14. Harvesting table; 15. Harvesting knife; 16. Linkage gear; 17. Gear belt; 18. Transmission gear; 2. Reel; 21. Transmission shaft; 22. Transmission wheel; 23. Support arm; 24. Mounting rod; 25. Comb teeth; 26. Eccentric wheel; 27. Connecting arm; 28. Support part; 3. Adjusting assembly; 31. Ring gear; 32. Adjusting platform; 33. Mounting groove; 34. Chute; 35. First rack; 36. Mounting seat; 37. Bidirectional lead screw; 38. Gathering unit; 381. Slider; 382. Threaded hole; 383. Placing groove; 384. Driven gear; 385. Connecting shaft; 386. Gathering column; 4. Linkage assembly; 41. Mounting frame; 42. Guide block; 43. Connecting column; 44. Driven part; 45. Second rack. DETAILED DESCRIPTION OF THE INVENTION

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0022] Please refer to Figure 1-2The invention discloses a stem and leaf protection combined harvester for harvesting mugwort, comprising a harvester body 1 for driving, on which a harvester assembly 11 for harvesting mugwort is arranged; the harvester assembly 11 comprises a bucket for collecting the harvested mugwort and a reel 2 for guiding the stems and leaves of the mugwort, a feeding auger for conveying the mugwort is arranged in the bucket, a harvesting knife 15 for cutting the mugwort is arranged at one end of the bucket, and a plurality of adjustment assemblies for adjusting the direction of the mugwort after cutting so that the root of the mugwort enters the auger first are arranged on the bucket 3; the harvesting assembly 11 also includes a transmission member 12 for driving, the transmission member 12 is connected to the reel 2, and the transmission member 12 is also provided with a linkage member 13 for auxiliary transmission, and the linkage member 13 is connected to the linkage assembly 4 for realizing reciprocating motion; the bottom of the bucket is provided with linkage gears 16 matching the number of the adjustment assembly 3, each linkage gear 16 is connected to the adjustment assembly 3, and gear belts 17 are connected between the multiple linkage gears 16, and a transmission gear 18 is provided on a linkage gear 16, and the transmission gear 18 is connected to the linkage assembly 4. During actual use, when the staff needs to harvest the mugwort, the staff can start the harvesting knife 15 and control the harvester body 1 to drive the harvesting component 11 to move in the harvesting area; in this process, the transmission member 12 provided on the harvesting component 11 is started to drive the reel 2 to rotate, and the reel 2 can be moved to the harvesting knife 15 during the rotation and horizontal displacement of the reel. At this time, the high-speed harvesting knife 15 can cut the mugwort. After cutting, the mugwort will fall into bundles on the adjusting component 3 under the action of the reel 2. At the same time, during the start-up of the transmission member 12, the linkage member 13 linked to it can be driven to move the linkage component 4. The linkage assembly 4 is driven to achieve the effect of reciprocating motion. During the reciprocating motion of the linkage assembly 4, the transmission gear 18 can be driven to rotate reciprocatingly. During the reciprocating rotation of the transmission gear 18, one of the linkage gears 16 can be driven to rotate reciprocatingly. Under the action of the gear belt 17, multiple linkage gears 16 can be driven to rotate reciprocatingly synchronously. During the reciprocating rotation of multiple linkage gears 16, the adjustment assembly 3 can be driven to gather and change the position of the wormwood, thereby ensuring that the root can enter the feeding auger during use, thereby achieving the effect of collecting the harvested wormwood.

[0023] It is worth noting that the feeding auger in this embodiment includes a driving motor and auger blades for driving it, and the harvester body 1 is provided with a collecting device that cooperates with the feeding auger; the harvesting knife 15 in this embodiment includes a cutting knife for cutting mugwort and a driving member for driving the cutting knife.

[0024] The technical effects brought by the above embodiments are as follows: By providing the harvesting component 11, during its use, it can effectively harvest wormwood and turn the direction of the harvested wormwood, so that the harvested wormwood can preferentially enter the inside of the feeding auger from the root. This method can effectively avoid the situation where the leaves are severely damaged and the active ingredients are lost when the stems and leaves enter the auger first.

[0025] Please refer to Figure 4 , as a preferred technical solution in the embodiment, the linkage component 4 includes two mounting brackets 41 mounted at the bottom of the bucket. Guide blocks 42 are slidably connected in both mounting brackets 41. A connecting column 43 is connected between the two guide blocks 42. Both ends of the connecting column 43 penetrate through the guide block 42 and one end is connected to a driven member 44 and the other end is connected to a second rack 45. The second rack 45 meshes with the transmission gear 18. The output end of the linkage member 13 is drivingly connected to a transmission disk 131. A transmission boss 132 is provided on the transmission disk 131. The transmission boss 132 is slidably connected in the driven member 44. During actual use, when the operator drives the transmission disk 131 to rotate through the linkage member 13, the transmission disk 131 can drive the transmission boss 132 to perform a circular motion around the transmission disk 131. During the rotation of the transmission boss 132, it can drive the driven member 44 to perform a reciprocating motion, so that the driven member 44 can drive the connecting column 43 to enable the second rack 45 to achieve a reciprocating motion effect. During the reciprocating motion of the second rack 45, it can effectively drive the transmission gear 18 to rotate reciprocally, so as to drive a plurality of linkage gears 16 to enable the adjustment component 3 to achieve a reciprocating rotation effect, so as to continuously adjust the position of the cut wormwood.

[0026] The technical effects brought by the above embodiments are as follows: By providing the transmission disk 131 and the transmission boss 132, it can drive the driven member 44 to perform a reciprocating motion, so that the second rack 45 can drive the transmission gear 18 and the linkage gear 16 to enable the adjustment component 3 to achieve the effect of adjusting the position of the wormwood. This transmission method can enable the adjustment component 3 to continuously adjust the position of the subsequently cut wormwood, and only one driving source is required to complete it. The structure is simple and the use cost is lower.

[0027] It is worth mentioning that in the above embodiment, the linkage between the transmission member 12 and the linkage member 13 can be a transmission belt and a transmission wheel, or a chain and a sprocket transmission. The transmission member 12 includes a motor for providing power and a transmission wheel or a transmission belt for linkage, and a shell is provided on the outside; further, the linkage between the transmission member 12 and the linkage member 13 and the linkage with the reel 2, and the linkage between the linkage member 13 and the transmission disc 131 are all provided with a reduction motor, so that the output speed of the transmission member 12 and the linkage member 13 can be effectively adjusted to achieve precise control of the reel 2 and the adjustment component 3. The final effect is that the reel 2 moves the mugwort once, and the harvester 15 cuts it. At the same time, the adjustment component 3 can achieve the effect of position exchange after the cutting is completed. When the next batch of mugwort falls on the adjustment component 3 after cutting, the reset effect is just completed and the next round of position exchange begins.

[0028] See also Figure 1-4 As a preferred technical solution in the embodiment, the adjustment component 3 includes a ring gear 31 fixedly mounted on the bucket and an adjustment platform 32 rotatably mounted on the bucket. The bottom of the adjustment platform 32 is fixedly connected to the linkage gear 16, and the ring gear 31 is located between the harvesting knife 15 and the feeding auger; a mounting groove 33 is provided on the adjustment platform 32, and a mounting seat 36 is fixedly installed in the mounting groove 33. A bidirectional screw rod 37 is rotatably connected to the mounting seat 36. Both ends of the bidirectional screw rod 37 are transmission-connected to a folding unit 38. One end of the bidirectional screw rod 37 passes through the adjustment platform 32 and is provided with a driving gear 39. The driving gear 39 is meshed with the ring gear 31. In actual use, after the staff cuts the wormwood, the cut wormwood will fall between the gathering units 38. At this time, when the staff controls the linkage gear 16 to rotate, the linkage gear 16 can drive the adjustment platform 32 to rotate. During the rotation of the adjustment platform 32, the wormwood between the gathering units 38 can be driven to exchange positions, so that the roots of the wormwood can enter the feeding auger first, thereby effectively avoiding the situation in which the stem and leaf ends enter the auger first during the harvesting process, causing the stem and leaves to be damaged, thereby affecting the medicinal value of the harvested wormwood. At the same time, when the adjusting platform 32 rotates, the driving gear 39 can be driven to produce a circular motion. At the same time, when the driving gear 39 is in a circular motion, it is meshed with the ring gear 31, so that the driving gear 39 can produce a self-rotation effect, thereby driving the bidirectional screw rod 37 to rotate. When the bidirectional screw rod 37 rotates, the two gathering units 38 can be driven to produce an inward displacement, thereby achieving the effect of gathering the wormwood into a bundle; During the implementation of the above solution, it can effectively avoid the interference between mugwort leaves during the rotation of the mugwort driven by the adjustment table 32 and the folding unit 38, thereby ensuring the stability of the position adjustment of the mugwort during its use.

[0029] Please refer to Figure 5-6 , as a preferred technical solution in the embodiment, the folding unit 38 includes a slider 381 slidably connected in the installation groove 33. A threaded hole 382 threadedly connected to the bidirectional lead screw 37 is provided on the slider 381. A folding column 386 for folding the mugwort is provided on the threaded hole 382. A connecting shaft 385 rotatably connected to the slider 381 is provided at the bottom of the folding column 386. A driven gear 384 is fixedly connected to the bottom of the connecting shaft 385. A placement groove 383 for installing the driven gear 384 is provided on the slider 381. A sliding groove 34 for facilitating the sliding of the driven gear 384 is further provided on the adjustment table 32. A first rack 35 is provided in the middle of the sliding groove 34. When the sliding groove 34 slides to the position of the first rack 35, it can be engaged with the first rack 35. During actual use, when the driving gear 39 drives the bidirectional lead screw 37 to rotate, it can drive the two sliders 381 to produce relative or reverse displacements. During the process of their relative displacements, the slider 381 will drive the folding column 386 to produce a relative displacement effect. During the process of the relative displacement of the folding column 386, it can drive the driven gear 384 to produce a displacement effect. At this time, the driven gear 384 will displace along the sliding groove 34 provided on the adjustment table 32. When the driven gear 384 displaces to the position of the first rack 35, the driven gear 384 can form an engagement effect with the first rack 35. At this time, the driven gear 384 just realizes the effect of folding the mugwort, and during the displacement of the driven gear 384 on the first rack 35, it can make the driven gear 384 produce a self-rotation effect. During the self-rotation process of the driven gear 384, it can drive the folding column 386 to produce a rotation effect. And because the two driven gears 384 are in relative displacement on the first rack 35, the two driven gears 384 will produce reverse rotations. At the same time, the two folding columns 386 can further fold the mugwort, and during the process of their self-rotation, it can make the mugwort be conveyed, so that after the position of the mugwort is adjusted, it can be conveyed into the feeding auger.

[0030] The technical effects brought by the above embodiment are: by providing the driven gear 384 and the first rack 35 and enabling them to mesh with each other, it is ensured that during the displacement of the slider 381, while the mugwort can be folded, the effect of effectively conveying the mugwort can be realized, so that the mugwort bundle can smoothly enter the feeding auger.

[0031] Please refer to Figure 2, as a preferred technical solution in the embodiment, the reel 2 includes a transmission shaft 21 connected to the transmission member 12. Both ends of the transmission shaft 21 are provided with transmission wheels 22 for installation. A plurality of support arms 23 are installed on both transmission wheels 22. A plurality of mounting rods 24 for guiding the wormwood are installed on both support arms 23. A plurality of comb teeth 25 for combing the wormwood are provided on the mounting rod 24. The comb teeth 25 are composed of two straight rods. One ends of the two straight rods are installed on the mounting rod 24 and the other ends are connected by a V-shaped bending rod. The distance is equal to the distance between the closing units 38 on two adjacent adjustment tables 32. The distance between the two comb teeth 25 is equal to the distance when the two closing units 38 are opened to the maximum. This setting enables it to reduce the distance between multiple wormwoods during the process of guiding the wormwood, achieving the effect of harvesting them in bundles. Thus, under the action of the adjustment assembly 3, the roots of the bundled wormwood first enter the feeding auger.

[0032] Please refer to Figure 2 , as a preferred technical solution in the embodiment, one end of the transmission shaft 21 is also drivingly connected to an eccentric wheel 26. The eccentric wheel 26 is provided with connecting arms 27 adapted to the number of support arms 23. Support members 28 for supporting the mounting rod 24 are provided at the ends of the connecting arms 27. During actual use, when the staff controls the transmission shaft 21 to rotate, the transmission shaft 21 can drive the transmission wheels 22 to rotate synchronously, and the eccentric wheel 26 performs an eccentric motion. And under the action of the connecting arms 27 and the support members 28 supporting the mounting rod 24, it can ensure that the comb teeth 25 on the mounting rod 24 can always be vertical, so as to ensure a constant angle between the comb teeth 25 and the ground, forming a planar parallel motion trajectory. This motion mode enables it to vertically insert into the lodged crop clusters, avoiding hitting or picking the wormwood.

[0033] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the element.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A stem and leaf protection combined harvesting device for harvesting mugwort, comprising a harvester body (1) for driving, characterized in that: The harvester body (1) is provided with a harvesting component (11) for harvesting mugwort; The harvesting assembly (11) comprises a bucket for collecting harvested mugwort and a reel (2) for guiding the stems and leaves of the mugwort. A feeding auger for conveying the mugwort is arranged in the bucket. A harvesting knife (15) for cutting the mugwort is arranged at one end of the bucket. The bucket is also provided with a plurality of adjustment assemblies (3) for adjusting the pouring direction of the mugwort after cutting so that the roots of the mugwort enter the auger first. The harvesting assembly (11) further comprises a transmission member (12) for driving, the transmission member (12) being transmission-connected to the reel (2), the transmission member (12) being further provided with a linkage member (13) for auxiliary transmission, the linkage member (13) being transmission-connected to a linkage assembly (4) for achieving reciprocating motion; The bottom of the bucket is provided with linkage gears (16) matching the number of the adjustment components (3), each linkage gear (16) is in transmission connection with the adjustment component (3), a gear belt (17) is connected between the plurality of linkage gears (16), and a transmission gear (18) is provided on one of the linkage gears (16), and the transmission gear (18) is in transmission connection with the linkage component (4).

2. The stem and leaf protection type combine harvester for harvesting mugwort as claimed in claim 1, characterized in that: The linkage assembly (4) comprises two mounting frames (41) mounted at the bottom of the bucket, guide blocks (42) being slidably connected in the two mounting frames (41), a connecting column (43) being connected between the two guide blocks (42), both ends of the connecting column (43) passing through the guide blocks (42), one end of the connecting column being connected to a follower (44) and the other end of the connecting column being connected to a second rack (45), the second rack (45) being meshed with the transmission gear (18).

3. The stem and leaf protection type combine harvester for harvesting mugwort as claimed in claim 1, characterized in that: The output end of the linkage member (13) is drivingly connected to a transmission disk (131), the transmission disk (131) is provided with a transmission boss (132), and the transmission boss (132) is slidably connected to the inside of the driven member (44).

4. The stem and leaf protection type combine harvester for harvesting mugwort as claimed in claim 1, characterized in that: The adjustment assembly (3) comprises a ring gear (31) fixedly mounted on the bucket and an adjustment platform (32) rotatably mounted on the bucket, the bottom of the adjustment platform (32) is fixedly connected to the linkage gear (16), and the ring gear (31) is located between the harvesting knife (15) and the feeding auger; The adjusting platform (32) is provided with a mounting groove (33), a mounting seat (36) is fixedly mounted in the mounting groove (33), a bidirectional screw rod (37) is rotatably connected to the mounting seat (36), both ends of the bidirectional screw rod (37) are transmission-connected to a folding unit (38), one end of the bidirectional screw rod (37) passes through the adjusting platform (32) and is provided with a driving gear (39), and the driving gear (39) is meshed with the ring gear (31).

5. The stem and leaf protection type combine harvester for harvesting mugwort as claimed in claim 4, characterized in that: The folding unit (38) includes a slider (381) slidably connected in the mounting groove (33); the slider (381) is provided with a threaded hole (382) threadedly connected to the bidirectional screw rod (37); the threaded hole (382) is provided with a folding column (386) for folding the mugwort; the bottom of the folding column (386) is provided with a connecting shaft (385) rotatably connected to the slider (381); the bottom of the connecting shaft (385) is fixedly connected with a driven gear (384); and the slider (381) is provided with a placement groove (383) for mounting the driven gear (384).

6. The stem and leaf protection type combine harvester for harvesting mugwort as claimed in claim 1, characterized in that: The adjustment platform (32) is also provided with a slide groove (34) for facilitating the sliding of the driven gear (384), and a first rack (35) is arranged in the middle of the slide groove (34). When the slide groove (34) slides to the first rack (35), it can mesh with the first rack (35).

7. The stem and leaf protection type combine harvester for harvesting mugwort as claimed in claim 1, characterized in that: The reel (2) comprises a transmission shaft (21) connected to a transmission member (12), both ends of the transmission shaft (21) are provided with transmission wheels (22) for installation, a plurality of support arms (23) are installed on the two transmission wheels (22), a plurality of installation rods (24) for guiding the mugwort are installed on the two support arms (23), and a plurality of comb teeth (25) for combing the mugwort are arranged on the installation rods (24).

8. The stem and leaf protection type combine harvester for harvesting mugwort as claimed in claim 7, characterized in that: The comb teeth (25) are composed of two straight rods, one end of the two straight rods is mounted on the mounting rod (24) and the other end is connected via a V-shaped bending rod.

9. The stem and leaf protection type combine harvester for harvesting mugwort as claimed in claim 8, characterized in that: The distance between the two straight rods is equal to the distance between the folding units (38) on two adjacent adjustment platforms (32), and the distance between the two comb teeth (25) is equal to the distance between the two folding units (38) when they are opened to the maximum.

10. The stem and leaf protection type combine harvester for harvesting mugwort according to claim 9, characterized in that: One end of the transmission shaft (21) is also drivingly connected to an eccentric wheel (26), and the eccentric wheel (26) is provided with connecting arms (27) whose number matches the supporting arms (23), and the ends of the connecting arms (27) are provided with supporting members (28) for supporting the mounting rod (24).

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