Anti-winding hemp harvester header

Abstract

According to the anti-winding hemp harvester header, the first cutter disc and the rotary header are arranged on the cutting side of the rack, the first cutter disc is provided with the first cutting teeth distributed in the circumferential direction, the second cutter disc parallel to the first cutter disc is arranged on the rotary header, and the second cutter disc is provided with the second cutting teeth arranged in the circumferential direction; the first cutting edges on the first cutting teeth and the second cutting edges on the second cutting teeth are oppositely arranged, and in the using process, the rotary header rotates in the direction of the second cutting edges so as to cut hemp stalks. Due to the fact that the first cutting teeth can support the bast fiber stalks, the cutting quality can be improved in the cutting process, broken stubbles are reduced, and the possibility that bast fiber is wound into the rotating shaft of the rotating header and wound is reduced.

Description

Technical Field

[0002] The present invention relates to the technical field of ramie planting, and specifically, to a non-entangling cutter bar for ramie harvesters. Background Art

[0004] Ramie fibers have strong flexibility and entanglement properties. During the process of cutting ramie stalks with a disc cutter, the disc cutter sometimes fails to completely cut off the ramie stalks, resulting in a large amount of ramie fibers being wound around parts such as the cutter head and cutter shaft of the disc cutter. Once the fibers are wound, a series of serious consequences will occur. On the one hand, it will increase the operating resistance of the cutter, causing power devices such as motors to need to output greater power to maintain the normal operation of the cutter, and may also cause the power device to be damaged due to overload, shortening the service life of the equipment. On the other hand, fiber winding will further affect the cutting effect of the cutter, resulting in unsmooth cutting, problems such as incomplete cutting and rough cut edges, and reducing the harvesting quality of ramie. Summary of the Invention

[0006] The present invention provides a non-entangling cutter bar for ramie harvesters, which makes improvements to the problem that ramie stalks cannot be completely cut during harvesting in the prior art, and can improve the cutting ability of ramie stalks.

[0007] To achieve the above object, the present invention provides a non-entangling cutter bar for ramie harvesters, comprising:

[0008] A frame, the frame includes a cutting side and a discharging side arranged oppositely, and the cutting side is communicated with the discharging side;

[0009] A cutting device, the cutting device is arranged on the cutting side, the cutting device includes a first cutter head and a rotary cutter bar, the first cutter head is installed on the frame, a plurality of first cutting teeth are arranged at intervals along the circumferential direction of the first cutter head, and the first cutting teeth include first cutting edges; the rotary cutter bar is rotatably arranged on the frame and is coaxially arranged with the first cutter head, a second cutter head is provided on the rotary cutter bar, the second cutter head is arranged parallel to the first cutter head, second cutting teeth are provided on the second cutter head, a plurality of second cutting teeth are arranged along the circumferential direction on the second cutting teeth, the second cutting teeth are arranged corresponding to the first cutting teeth, the second cutting teeth include second cutting edges, and the second cutting edges are arranged facing the first cutting edges.

[0010] Among them, the rotation direction of the rotary cutting table is the same as the orientation of the second cutting edge, and the orientation of the first cutting edge is opposite to the rotation direction of the rotary cutting table. When the anti-winding hemp harvester cutting table of this embodiment is in use, the cutting side faces the hemp stalks to be harvested and the rotary cutting table rotates, and the anti-winding hemp harvester cutting table moves. The hemp stalks enter between adjacent first cutting teeth. The rotating cutter disc enables the second cutting edge to cooperate with the first cutting edge on the first cutting teeth to cut off the hemp stalks to complete the harvesting. Since the first cutter disc is fixed, the first cutting teeth can support the hemp stalks during cutting, and can prevent them from moving when the second cutting edge cuts the hemp stalks, so that the first cutting edge and the second cutting edge can apply a stable shearing force to the hemp stalks, thereby improving the cutting quality and reducing the generation of stubble. When the hemp stalks do not completely enter between two adjacent first cutting teeth, due to the supporting effect of the first cutting edge, when the second cutting edge cuts through, the kinetic energy of the stalks above the incision is reduced, which is beneficial to avoiding the twisting and deformation of the uncut part at the incision, so as to remain stable when cutting this part next time, reducing the generation of stubble, and further reducing the possibility of hemp fibers being involved and entangled. At the same time, since the first cutting edge and the second cutting edge jointly act to apply a shearing force to the hemp stalks to achieve cutting, rather than using the kinetic energy and sharpness of the second cutting teeth to break or cut off the hemp stalks, the requirements for the sharpness of the first cutting edge and the second cutting edge are relatively small, which is beneficial to maintaining a good cutting effect after multiple cuts, thereby reducing the generation of stubble, and further reducing the possibility of hemp fibers being involved and entangled.

[0011] As an optional technical solution, the first cutting tooth further includes a back, the back is disposed opposite to the first cutting edge, and the first cutting edge is corrugated; the back and the first cutting edge gradually approach and connect to form a blade tip along the direction from the root to the end of the first cutting tooth, and the back is in an outwardly convex arc shape, so that the blade tip of the first cutting tooth is offset towards the first cutting edge. The corrugated shape of the first cutting edge can reduce the shearing force required for cutting the hemp stalks, which is beneficial to improving the cutting efficiency, reducing the cutting energy consumption and prolonging the tool life.

[0012] As an optional technical solution, the second cutting tooth also includes a third cutting edge, the third cutting edge is arranged opposite to the second cutting edge, the third cutting edge and the second cutting edge gradually approach and connect to form a blade tip along the direction from the root to the end of the second cutting tooth, and the third cutting edge is in an outward convex arc shape, so that the blade tip of the second cutting tooth is offset toward the second cutting edge. The third cutting edge can reduce the thickness of the second cutting tooth on the side opposite to the second cutting edge, thereby reducing the cross-sectional area of the second cutting tooth blade tip along the rotation direction of the second cutter disc, thereby increasing the sharpness of the blade tip part. When the hemp stem does not completely enter between the two first cutting teeth and the second cutting teeth cut it, the blade tip part of the second cutting tooth can better penetrate the hemp stem, reducing the degree of peeling of the uncut part from the entire stem at the incision, thereby reducing the generation of broken stubble, which is beneficial to improving the cutting quality and preventing the fiber bundles generated by the broken stubble peeling from wrapping around the rotary cutter.

[0013] As an optional technical solution, the second cutting edge includes a first blade portion and a second blade portion connected to each other, one end of the first blade portion is connected to the tip of the second cutting tooth, and the other end is connected to the second blade portion, and the portion between the two ends is recessed toward the third cutting edge; the second blade portion extends from the connection with the first blade portion to the root of the second cutting tooth. During cutting, since the first blade portion is recessed toward the third cutting edge, the hemp stems can be clamped, and the blade tip of the second cutting tooth can be cooperated with to prevent the hemp stems from moving radially outward along the second blade disc during cutting, so that the first cutting tooth and the cutting tooth can apply a stable shear force to the hemp stems, thereby improving the cutting quality and reducing the occurrence of broken stubble. In addition, a relatively convex blade portion can be generated at the transition between the first blade portion and the second blade portion, reducing the contact area between this blade portion and the hemp stems during cutting, thereby improving the cutting effect.

[0014] As an optional technical solution, the rotary harvesting table is further provided with a toothed disc, which is arranged on the side of the second cutter disc away from the first cutter disc and is coaxially arranged with the second cutter disc, and the toothed disc is provided with a plurality of teeth, which are arranged at intervals along the circumference of the toothed disc; the diameter of the outer contour envelope of the toothed disc is less than or equal to the diameter of the outer contour envelope of the first cutter disc and the second cutter disc; the number of the toothed discs is multiple, and the plurality of toothed discs are arranged at intervals along the axial direction of the second cutter disc. The toothed disc rotates with the rotary harvesting table, and can transfer the hemp stems cut by the first cutter disc and the second cutter disc from the cutting side to the discharging side.

[0015] As an alternative technical solution, an anti - entanglement cutter is further provided on the rotary cutter table. The anti - entanglement cutter is arranged in the gaps between adjacent two tooth - disc pairs along the connection direction between the adjacent two tooth - disc pairs, and in the gaps between the tooth - disc pair and the second cutter disc. The cutting edge of the anti - entanglement cutter is arranged radially along the tooth - disc. The cutting edge of the anti - entanglement cutter has a plurality of tooth - shaped protrusions. The number of the anti - entanglement cutters is multiple, and the multiple anti - entanglement cutters are arranged at intervals along the circumferential direction of the tooth - disc. When hemp fibers are accidentally involved in the rotary cutter table and start to wind around the rotating shaft of the rotary cutter table, they will first contact the anti - entanglement cutter. As the rotary cutter table rotates, the hemp fibers gradually tighten. At this time, the anti - entanglement cutter can cut the hemp fibers, preventing the hemp fibers from obstructing the rotation of the rotary cutter table.

[0016] As an alternative technical solution, the number of the cutting devices is two. The two rotary cutter tables are axially parallel to each other, and the two rotary cutter tables rotate towards each other along the direction from the cutting side to the discharge side. Increasing the number of the rotary cutter tables is beneficial to improving the harvesting efficiency, and can make the cut hemp stalks be conveyed from between the two rotary cutter tables to the discharge side.

[0017] As an alternative technical solution, a hemp - separating plate and hemp - separating forks are further included. The hemp - separating plate is arranged between the two rotary cutter tables along the direction from the discharge side to the cutting side. The end of the hemp - separating plate has two connected inclined surfaces, and the two inclined surfaces face one of the rotary cutter tables respectively.

[0018] The hemp - separating forks include fork rods and guiding rods. The fork rods are arranged on both sides of the hemp - separating plate along the direction from the discharge side to the cutting side. One end of the guiding rod is arranged corresponding to the gap between two first cutting teeth, and the other end is connected to the fork rod and is farther away from the hemp - separating plate. As the machine frame advances forward along the direction from the discharge side to the cutting side, the hemp - separating plate can push the hemp stalks growing between the two rotary cutter tables to both sides, pressing them on the hemp - separating forks, and then sliding along the guiding rods to between the two first cutting teeth to complete cutting as the machine frame continues to move. This is beneficial to reducing the harvesting dead angle, so that all the hemp stalks on the moving path of the machine frame are cut by the combined action of the first cutting teeth and the second cutting teeth, thereby improving the harvesting quality. In addition, the hemp - separating plate can not only play the role of hemp separation and conveying, but also play a role in anti - blocking to a certain extent, and also has a beneficial impact on the stubble height of the hemp stalks and the harvesting effect of the lodging hemp stalks. The hemp - separating forks can comb the hemp stalks within the cutting width neatly. The guiding rods play a role in supporting the hemp during the operation, guiding the cut hemp stalks to the discharge end in an orderly form for subsequent operations.

[0019] As an optional technical solution, it further includes a conveying roller, which is arranged on the side of the cutting device facing the discharge side, and the number of the conveying rollers is two, each corresponding to one rotary harvesting table, and the rotation direction of the conveying roller is the same as the rotation direction of the corresponding rotary harvesting table. The conveying roller rotates to transport the hemp stalks cut by the first blade disc and the second blade disc from the cutting side to the discharge side.

[0020] As an optional technical solution, a hemp supporting rod is further included, the hemp supporting rod comprising a mounting portion and an extension portion, the mounting portion is arranged along the connecting line between the two rotary cutters and connected to the frame, the extension portion is connected to both ends of the mounting portion and is arranged along the direction from the discharging side to the cutting side, and the extension portion is used to straighten the hemp stems. The hemp supporting rod can support the upper part of the cut of the hemp stems, which is conducive to improving the cutting effect.

[0021] One or more technical solutions provided by the present invention have at least the following technical effects or advantages:

[0022] The anti-entanglement hemp harvester header of the present invention is provided with a first cutter disc and a rotary cutter on the cutting side of a frame, wherein the first cutter disc has a plurality of first cutting teeth distributed in the circumferential direction, and the rotary cutter is provided with a second cutter disc arranged in parallel with the first cutter disc, and a plurality of second cutting teeth are arranged in the circumferential direction on the second cutter disc, and the first cutting edge on the first cutting tooth and the second cutting edge on the second cutting tooth are arranged facing each other, and when in use, the rotary cutter rotates along the direction of the second cutting edge to cut the hemp stems. Since the first cutting teeth can support the hemp stems, the cutting quality can be improved and the generation of broken stubble can be reduced during cutting, thereby reducing the possibility of hemp fibers being rolled into the rotary cutter shaft and being entangled. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings described herein are used to provide a further understanding of the embodiments of the present invention, constitute a part of the present invention, and do not constitute a limitation on the embodiments of the present invention;

[0025] Figure 1 It is a schematic diagram of the header of the anti-entanglement hemp harvester in the present invention;

[0026] Figure 2 for Figure 1 Schematic diagram of the rotary harvesting unit;

[0027] Figure 3 for Figure 2 Schematic diagram of the front view of the rotary harvesting unit;

[0028] Figure 4 for Figure 1 Schematic diagram of the first cutting tooth;

[0029] Figure 5 Schematic diagram of the second cutting tooth in Figure 1 ;

[0030] Figure 6 Schematic diagram of the first cutting edge profile curve in Figure 1 ;

[0031] Figure 7 Schematic diagram of the second cutting edge profile curve in Figure 1 ;

[0032] Description of the reference numerals in the drawings

[0033] Frame - 1; Cutting side - 11; Discharge side - 12; Conveyor roller - 13; Hemp - supporting rod - 14; Mounting part - 141; Extension part - 142;

[0034] First cutter head - 2; First cutting tooth - 21; First cutting edge - 211; Back - 212;

[0035] Rotary cutting table - 3; Second cutter head - 31; Second cutting tooth - 311; Second cutting edge - 3111; First cutting edge part - 3111a; Second cutting edge part - 3111b; Third cutting edge - 3112; Tooth - shifting disc - 32; Anti - entanglement cutter - 33;

[0036] Hemp - separating plate - 4; Hemp - separating fork - 5; Fork rod - 51; Guide rod - 52;

[0037] Drive device - 6. Detailed implementation manners

[0039] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with 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 of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0040] In the present invention, the orientation or positional relationship indicated by terms such as "upper", "lower", "front", "rear", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. These terms are mainly used to better describe the present invention and its embodiments, and are not used to limit that the indicated device, element or component must have a specific orientation, or be constructed and operated in a specific orientation.

[0041] Moreover, in addition to being used to indicate orientation or positional relationship, some of the above terms may also have other meanings. For example, the term "upper" may also be used to indicate a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in the present invention can be understood according to specific circumstances.

[0042] In addition, the terms "installed", "set up", "provided with", "connected", and "linked" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be directly connected, or indirectly connected through an intermediate medium, or there can be internal communication between two devices, components, or parts. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] In addition, terms such as "first", "second", etc. are mainly used to distinguish different devices, components, or parts (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, components, or parts. Unless otherwise specified, the meaning of "a plurality" is two or more.

[0044] Ramie fibers have strong flexibility and winding properties. During the process of the disk cutter cutting ramie stalks, the disk cutter sometimes cannot completely cut off the ramie stalks, resulting in a large amount of ramie fibers winding around parts such as the cutter head and cutter shaft of the disk cutter. Once the fibers wind, a series of serious consequences will occur. On the one hand, it will increase the running resistance of the cutter, causing power devices such as motors to need to output greater power to maintain the normal operation of the cutter, and may also cause the power device to be damaged due to overload, shortening the service life of the equipment. On the other hand, fiber winding will further affect the cutting effect of the cutter, resulting in unsmooth cutting, problems such as incomplete cutting and rough cut edges, and reducing the harvesting quality of ramie.

[0045] In the related art, the disc harvester mainly cuts the hemp stems by the high-speed rotation of the cutter disc, relying on the kinetic energy of the cutting teeth and the sharpness of the blade, and drives the disc harvester to move for continuous harvesting. Since the movement of the disc harvester is relatively independent of the rotation of the cutter disc, the growth of the hemp stems also has a certain randomness. In this harvesting method, the blade of the cutting teeth can only cut through part of the hemp stems during one rotation, rather than completely cutting off the hemp stems. At this time, the rigidity of the remaining part of the hemp stems is greatly reduced, and it is easier to deform under the action of external forces, and it cannot provide sufficiently stable support for the part on the upper side of the incision. This part obtains a certain amount of kinetic energy when the cutting teeth cut through it, causing the hemp stems to twist at the uncut part. This makes the rotation trajectory of the cutting teeth deviate from the radial direction of the hemp fibers of this part when the cutter disc cuts this part next time, and the difficulty of cutting increases, which makes this part more likely to be peeled off and torn off from the root by the cutting teeth instead of being cut off. In addition, when the sharpness of the cutting tooth blade is increased, the durability and ability to resist chipping of the cutting tooth blade will decrease, so the sharpness of the cutting tooth blade is usually limited; at the same time, after a certain number of cuts, the sharpness of the cutting tooth blade will also decrease, which further limits the ability of the cutting teeth to cut off the hemp stems. In this case, after the hemp stems are harvested, the broken ends of the stems are prone to form thinner diameter, smaller rigidity but longer length stubble, which is more likely to be drawn into the rotating shaft of the disc harvester, so that the entire fiber bundle corresponding to the broken stubble is peeled off from the harvested hemp stems under the rotation of the knife disc and entangled on the rotating shaft of the disc harvester.

[0046] Embodiment 1

[0047] The present invention provides a tangling-proof hemp harvester header, comprising:

[0048] The frame 1 includes a cutting side 11 and a discharging side 12 which are arranged opposite to each other, and the cutting side 11 is connected to the discharging side 12;

[0049] A cutting device is arranged on the cutting side 11, and the cutting device includes a first cutter disc 2 and a rotary cutting table 3. The first cutter disc 2 is installed on the frame 1. The first cutter disc 2 is provided with a plurality of first cutting teeth 21 spaced apart along the circumferential direction, and the first cutting teeth 21 include a first cutting edge 211; the rotary cutting table 3 is rotatably arranged with the frame 1 and is coaxially arranged with the first cutter disc 2. A second cutter disc 31 is arranged on the rotary cutting table 3, and the second cutter disc 31 is arranged parallel to the first cutter disc 2. A second cutting tooth 311 is arranged on the second cutter disc 31, and a plurality of second cutting teeth 311 are arranged on the second cutting teeth 311 along the circumferential direction. The second cutting teeth 311 are arranged corresponding to the first cutting teeth 21, and the second cutting teeth 311 include a second cutting edge 3111, and the second cutting edge 3111 is arranged toward the first cutting edge 211.

[0050] Among them, the rotation direction of the rotary cutting table 3 is the same as the orientation of the second cutting edge 3111, and the orientation of the first cutting edge 211 is opposite to the rotation direction of the rotary cutting table 3.

[0051] When the cutting table of the anti-winding hemp harvester in this embodiment is in use, the cutting side 11 is oriented towards the hemp stalks to be harvested and the rotary cutting table 3 is rotated, and the cutting table of the anti-winding hemp harvester moves. The hemp stalks enter between adjacent first cutting teeth 21. The rotating cutter head causes the second cutting edge 3111 to cooperate with the first cutting edge 211 on the first cutting teeth 21 to cut off the hemp stalks to complete the harvesting. Since the first cutter head 2 is fixed, the first cutting teeth 21 can support the hemp stalks during cutting, and can prevent them from moving when the second cutting edge 3111 cuts the hemp stalks, so that the first cutting edge 211 and the second cutting edge 3111 can apply a stable shearing force to the hemp stalks, thereby improving the cutting quality and reducing the generation of stubble. When the hemp stalks do not fully enter between two adjacent first cutting teeth 21, due to the supporting effect of the first cutting edge 211, when the second cutting edge 3111 cuts through, the kinetic energy of the stalks above the incision is reduced, which is conducive to avoiding the twisting and deformation of the uncut part at the incision, so as to remain stable when cutting this part next time, reduce the generation of stubble, and further reduce the possibility of hemp fibers being involved and entangled. At the same time, since the first cutting edge 211 and the second cutting edge 3111 jointly act to apply a shearing force to the hemp stalks to achieve cutting, rather than using the kinetic energy and sharpness of the second cutting teeth 311 to break or cut the hemp stalks, the requirements for the sharpness of the first cutting edge 211 and the second cutting edge 3111 are relatively small, which is conducive to maintaining a good cutting effect after multiple cuts, thereby reducing the generation of stubble and further reducing the possibility of hemp fibers being involved and entangled.

[0052] Optionally, it further includes a transmission device 6, and the transmission device 6 is connected to the rotary cutting table 3. When in use, an external device drives the rotary cutting table 3 to work through the transmission device 6, where the external device can be a harvester, a forage harvester, etc., and the transmission device 6 can include a universal joint, a cylindrical gear, a bevel gear coupling, a spline, etc.

[0053] Embodiment Two

[0054] On the basis of Embodiment One, the first cutting teeth 21 further include a back 212, the back 212 is disposed opposite to the first cutting edge 211, and the first cutting edge 211 is corrugated; the back 212 and the first cutting edge 211 gradually approach and connect to form a blade tip along the direction from the root to the end of the first cutting teeth 21, and the back 212 is in an outward convex arc shape, so that the blade tip of the first cutting teeth 21 is offset towards the first cutting edge 211. The first cutting edge 211 being corrugated can reduce the shearing force required to cut off the hemp stalks, which is beneficial to improving the cutting efficiency, reducing the cutting energy consumption, and prolonging the tool life.

[0055] As an alternative embodiment, the second cutting tooth 311 further includes a third cutting edge 3112, which is disposed opposite to the second cutting edge 3111. The third cutting edge 3112 and the second cutting edge 3111 gradually approach and connect to form a cutting tip along the direction from the root to the end of the second cutting tooth 311. The third cutting edge 3112 is in an outward convex arc shape, so that the cutting tip of the second cutting tooth 311 is offset towards the second cutting edge 3111. The third cutting edge 3112 can thin the thickness of the side of the second cutting tooth 311 opposite to the second cutting edge 3111, thereby reducing the cross-sectional area of the cutting tip of the second cutting tooth 311 along the rotation direction of the second cutter head 31, so as to increase the sharpness of the cutting tip portion. When the hemp stalk has not completely entered between the two first cutting teeth 21 and the second cutting tooth 311 cuts it, the cutting tip portion of the second cutting tooth 311 can better penetrate into the hemp stalk, reduce the degree of peeling of the uncut part at the incision from the whole stalk, thereby reducing the generation of stubble, being beneficial to improving the cutting quality, and preventing the fiber bundle from being wound around the rotary cutter head 3 due to the peeling of the stubble.

[0056] As an alternative embodiment, the second cutting edge 3111 includes a connected first blade portion 3111a and a second blade portion 3111b. One end of the first blade portion 3111a is connected to the cutting tip of the second cutting tooth 311, and the other end is connected to the second blade portion 3111b. The portion between the two ends is recessed towards the third cutting edge 3112; the second blade portion 3111b extends from the connection with the first blade portion 3111a to the root of the second cutting tooth 311. During cutting, since the first blade portion 3111a is recessed towards the third cutting edge 3112, the hemp stalk can be clamped, and together with the cutting tip of the second cutting tooth 311, it can prevent the hemp stalk from radially moving outwards along the second cutter head 31 during cutting, so that the first cutting tooth 21 and the cutting tooth can apply a stable shearing force to the hemp stalk, thereby improving the cutting quality and reducing the generation of stubble. Moreover, a relatively outward convex blade portion can be generated at the transition between the first blade portion 3111a and the second blade portion 3111b, reducing the contact area between this section of the blade portion and the hemp stalk during cutting, thereby improving the cutting effect.

[0057] Among them, the designs of the first cutting tooth 21 and the second cutting tooth 311 are modeled on the mouthparts of longhorn beetles. The unique arc-shaped tooth structure of the mandibles of longhorn beetles has excellent chewing and cutting performance, can easily crush or clip off the plant stems and branches clamped between them, and has the characteristics of low resistance, low consumption, and good cutting quality.

[0058] Exemplarily, as Figure 6 、 Figure 7 shown, Figure 6 in (B) is a partial enlarged view of the red dotted box in (A), Figure 7 in (B) is a partial enlarged view of the red dotted box in (A), and the first cutting edge 211 adopts the contour of the mandible of a longhorn beetle, and the contour curve is:

[0059] y=1.075872x^6-2.917775x^5-4.644934x^4+14.771762x^3+6.670843x^2-18.311596x+126.922785;

[0060] The second cutting edge 3111 adopts the contour of the upper jaw of the longicorn beetle, and the contour curve is y=-2.6479x^4-25.6093x^3-6.7546x^2+41.1719x+319.2418.

[0061] in Figure 6 , the x-axis is the direction from the root of the cutting tooth of the beetle's upper jaw to the end, and the y-axis is the direction from the bottom of the arc of the beetle's upper jaw to the end. Figure 7 In the figure, the x-axis is from the starting position to the ending position of the maxillary denticle of the longhorn beetle, and the y-axis is from the starting position to the top of the denticle of the maxillary denticle of the longhorn beetle.

[0062] It should be noted that the contour curve of the bionic longhorn beetle mouthparts used in the first and second blade discs can improve cutting efficiency and use less energy to complete the cutting of hemp stems. The following is a cutting simulation of the ordinary cutting knife, the second blade disc and the first blade disc, and the maximum shear stress on the stems is shown in the following table:

[0063] Cutter type Maximum shear stress / MPa Ordinary cutter 46.53 Second cutter head 39.56 First cutter head 38.11

[0064] Maximum shear stress of ramie stem cutting simulation

[0065] As an optional embodiment, the rotary harvesting table 3 is further provided with a toothed disc 32, which is arranged on the side of the second cutter disc 31 away from the first cutter disc 2 and is coaxially arranged with the second cutter disc 31. The toothed disc 32 is provided with a plurality of teeth, which are arranged at intervals along the circumference of the toothed disc 32; the diameter of the outer contour envelope of the toothed disc 32 is less than or equal to the diameter of the outer contour envelope of the first cutter disc 2 and the second cutter disc 31; there are a plurality of toothed discs 32, which are arranged at intervals along the axial direction of the second cutter disc 31. The toothed disc 32 rotates with the rotary harvesting table 3, and can transfer the hemp stems cut by the first cutter disc 2 and the second cutter disc 31 from the cutting side 11 to the discharging side 12.

[0066] As an alternative embodiment, an anti-winding cutter 33 is further provided on the rotary cutter platform 3. The anti-winding cutter 33 is arranged in the gaps between adjacent two tooth disk 32 and between the tooth disk 32 and the second cutter disk 31 along the connecting line direction between adjacent two tooth disk 32. The cutting edge of the anti-winding cutter 33 is arranged radially along the tooth disk 32, and the cutting edge of the anti-winding cutter 33 has a plurality of tooth-shaped protrusions; the number of the anti-winding cutters 33 is multiple, and the multiple anti-winding cutters 33 are arranged at intervals along the circumferential direction of the tooth disk 32. When hemp fibers are accidentally involved in the rotary cutter platform 3 and start to wind around the rotating shaft of the rotary cutter platform 3, they will first contact the anti-winding cutter 33. As the rotary cutter platform 3 rotates, the hemp fibers are gradually tightened. At this time, the anti-winding cutter 33 can cut off the hemp fibers to prevent the hemp fibers from hindering the rotation of the rotary cutter platform 3.

[0067] As an alternative embodiment, the number of the cutting devices is two. The two rotary cutter platforms 3 are axially parallel to each other, and the two rotary cutter platforms 3 rotate towards each other along the direction from the cutting side 11 to the discharging side 12. Increasing the number of the rotary cutter platforms 3 is beneficial to improving the harvesting efficiency, and can make the cut hemp stalks be conveyed between the two rotary cutter platforms 3 to the discharging side 12.

[0068] As an alternative embodiment, a hemp separating plate 4 and a hemp separating fork 5 are further included. The hemp separating plate 4 is arranged between the two rotary cutter platforms 3 along the direction from the discharging side 12 to the cutting side 11; the end of the hemp separating plate 4 has two connected inclined surfaces, and the two inclined surfaces respectively face one rotary cutter platform 3.

[0069] The hemp separating fork 5 includes a fork rod 51 and a guide rod 52. The fork rod 51 is arranged on both sides of the hemp separating plate 4 along the direction from the discharging side 12 to the cutting side 11. One end of the guide rod 52 is arranged corresponding to the gap between two first cutting teeth 21, and the other end is connected to the fork rod 51 and is farther away from the hemp separating plate 4. As the machine frame 1 advances forward along the direction from the discharging side 12 to the cutting side 11, the hemp separating plate 4 can push the hemp stalks growing between the two rotary cutter platforms 3 to both sides, so that they are pressed on the hemp separating fork 5, and slide along the guide rod 52 to between the two first cutting teeth 21 to complete cutting as the machine frame 1 continues to move. This is beneficial to reducing the harvesting dead angle, so that all the hemp stalks on the moving path of the machine frame 1 are cut by the combined action of the first cutting teeth 21 and the second cutting teeth 311, thereby improving the harvesting quality. In addition, the hemp separating plate 4 can not only play the role of separating and conveying hemp, but also play a role in preventing blockage to a certain extent, and also has a beneficial impact on the stubble height of the hemp stalks and the harvesting effect of the lodged hemp stalks. The hemp separating fork 5 can sort out the hemp stalks within the cutting width range. The guide rod 52 plays a role in supporting the hemp during the operation, guiding the cut hemp stalks to the discharging end in an orderly form for subsequent operations.

[0070] As an alternative embodiment, it further includes a conveying roller 13. The conveying roller 13 is arranged on one side of the cutting device facing the discharge side 12. The number of the conveying rollers 13 is two, and each conveying roller 13 corresponds to a rotary cutting table 3 respectively. Moreover, the rotation direction of the conveying roller 13 is the same as the rotation direction of the corresponding rotary cutting table 3. When the conveying roller 13 rotates, it can convey the hemp stalks cut by the first cutter head 2 and the second cutter head 31 from the cutting side 11 to the discharge side 12.

[0071] As an alternative embodiment, it further includes a hemp supporting rod 14. The hemp supporting rod 14 includes a mounting portion 141 and an extending portion 142. The mounting portion 141 is arranged along the connection line direction between the two rotary cutting tables 3 and is connected to the frame 1. The extending portion 142 is connected to both ends of the mounting portion 141 and is arranged along the direction from the discharge side 12 to the cutting side 11. The extending portion 142 is used to straighten the hemp stalks. The hemp supporting rod 14 can support the upper part of the cut of the hemp stalks, which is beneficial to improving the cutting effect.

[0072] Embodiment III

[0073] This embodiment provides a method for harvesting hemp stalks, based on the anti-entangling hemp harvester cutting table provided in Embodiment II, including:

[0074] S1: Start the anti-entangling hemp harvester cutting table; make the cutting side 11 face the hemp stalks to be harvested;

[0075] S2: The frame 1 moves towards the hemp stalks to be harvested, and the hemp separating plate 4 and the fork rod 51 tidy up the hemp stalks and lift the fallen hemp stalks;

[0076] S3: The guide rod 52 guides the hemp stalks between two adjacent first cutting teeth 21;

[0077] S4: The first cutting teeth 21 and the second cutting teeth 311 cooperate to cut off the hemp stalks;

[0078] S5: The tooth dial 32 conveys the cut hemp stalks to the conveying roller 13, and the conveying roller 13 conveys the hemp stalks to the discharge side 12.

[0079] Although the preferred embodiments of the present invention have been described, those skilled in the art can make additional changes and modifications once they know the basic creative concept. Therefore, the appended claims are intended to be interpreted to include the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0080] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention is also intended to include these modifications and variations.

Claims

1. A reel for a non-tangling hemp harvester, characterized in that, include: A frame, the frame comprising a cutting side and a discharging side arranged opposite to each other, the cutting side being in communication with the discharging side; A cutting device, the cutting device is arranged on the cutting side, the cutting device comprises a first cutter disc and a rotary cutting table, the first cutter disc is mounted on the frame, the first cutter disc is provided with a plurality of first cutting teeth at intervals along the circumferential direction, the first cutting teeth comprise a first cutting edge; the rotary cutting table is rotatably arranged with the frame and is coaxially arranged with the first cutter disc, a second cutter disc is arranged on the rotary cutting table, the second cutter disc is arranged parallel to the first cutter disc, second cutting teeth are arranged on the second cutter disc, a plurality of second cutting teeth are arranged on the second cutting teeth along the circumferential direction, the second cutting teeth are arranged corresponding to the first cutting teeth, the second cutting teeth comprise a second cutting edge, and the second cutting edge is arranged toward the first cutting edge; The rotation direction of the rotary harvesting table is the same as the direction of the second cutting edge, and the direction of the first cutting edge is opposite to the rotation direction of the rotary harvesting table.

2. The header of a non-tangling hemp harvester according to claim 1, characterized in that, The first cutting tooth also includes a back portion, which is arranged opposite to the first cutting edge, and the first cutting edge is corrugated; the back portion and the first cutting edge gradually approach and connect to form a blade tip along the direction from the root to the end of the first cutting tooth, and the back portion is in an outward convex arc shape so that the blade tip of the first cutting tooth is offset toward the first cutting edge.

3. The header of a non-tangling hemp harvester according to claim 1, characterized in that, The second cutting tooth also includes a third cutting edge, which is arranged opposite to the second cutting edge. The third cutting edge and the second cutting edge gradually approach and connect to form a blade tip along the direction from the root to the end of the second cutting tooth. The third cutting edge is in an outward convex arc shape so that the blade tip of the second cutting tooth is offset toward the second cutting edge.

4. The header of a non-tangling flax harvester according to claim 3, characterized in that, The second cutting edge includes a first blade portion and a second blade portion connected to each other, one end of the first blade portion is connected to the tip of the second cutting tooth, and the other end is connected to the second blade portion, and the portion between the two ends is recessed toward the third cutting edge; the second blade portion extends from the connection with the first blade portion to the root of the second cutting tooth.

5. The header of a non-tangling hemp harvester according to claim 1, characterized in that, The rotary cutting table is also provided with a gear disc, which is arranged on the side of the second cutter disc away from the first cutter disc and coaxially arranged with the second cutter disc. The gear disc is provided with a plurality of gears, and the plurality of gears are arranged at intervals along the circumference of the gear disc; the diameter of the outer contour envelope of the gear disc is less than or equal to the diameter of the outer contour envelope of the first cutter disc and the second cutter disc; the number of the gear discs is multiple, and the plurality of gear discs are arranged at intervals along the axial direction of the second cutter disc.

6. The header of a hemp harvester for preventing entanglement according to claim 5, characterized in that, The rotary cutting table is also provided with an anti-winding cutting knife, which is arranged in the gap between the two adjacent gear discs and the gap between the gear disc and the second cutter disc along the direction of the connection line between the two adjacent gear discs. The blade of the anti-winding cutting knife is arranged radially along the gear disc, and the blade of the anti-winding cutting knife has a plurality of tooth-like protrusions; the number of the anti-winding cutting knives is multiple, and the multiple anti-winding cutting knives are arranged at intervals along the circumference of the gear disc.

7. The header of a non-tangling hemp harvester according to claim 1, characterized in that, The number of the cutting devices is two, the axial directions of the two rotary cutting tables are parallel to each other, and the two rotary cutting tables rotate towards each other along the direction from the cutting side to the discharging side.

8. The header of a hemp harvester for preventing entanglement according to claim 7, characterized in that, It further includes a hemp separating plate and hemp separating forks. The hemp separating plate is arranged between the two rotary cutting tables along the direction from the discharging side to the cutting side; both ends of the hemp separating plate have two inclined surfaces connected to each other, and the two inclined surfaces face one of the rotary cutting tables respectively. The hemp separating forks include fork rods and guide rods. The fork rods are arranged on both sides of the hemp separating plate along the direction from the discharging side to the cutting side. One end of the guide rod is arranged corresponding to the gap between the two first cutting teeth, and the other end is connected to the fork rod and is farther away from the hemp separating plate.

9. A header of a non-tangling hemp harvester according to claim 7, characterized in that, It further includes conveying rollers. The conveying rollers are arranged on the side of the cutting device facing the discharging side. The number of the conveying rollers is two, and each of the conveying rollers is arranged corresponding to one of the rotary cutting tables, and the rotation direction of the conveying roller is the same as the rotation direction of the corresponding rotary cutting table.

10. A header of a non-tangling hemp harvester according to claim 7, characterized in that, It further includes hemp supporting rods. The hemp supporting rods include mounting parts and extending parts. The mounting parts are arranged along the connection line direction between the two rotary cutting tables and are connected to the frame. The extending parts are connected to both ends of the mounting parts and are arranged along the direction from the discharging side to the cutting side. The extending parts are used for straightening the hemp stalks.

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