Conveying mechanism of kenaf harvester

Abstract

The present invention discloses a conveying mechanism for a kenaf harvester, comprising a mounting frame, on which is disposed an oblique conveyor belt, and a barking, peeling, and cutting mechanism; the lower end of the oblique conveyor belt extends into a storage chamber, and the oblique conveyor belt is used to convey a single kenaf stalk to the barking mechanism; the barking mechanism cuts the skin of both sides of the kenaf stalk and conveys it to the barking mechanism; the barking mechanism peels the skin of the kenaf stalk and conveys it to the cutting mechanism; the cutting mechanism cuts the kenaf stalk and conveys it to a collection chamber; the cutting mechanism is located obliquely below the output end of the barking mechanism to receive the fallen kenaf stalk, and the cutting mechanism is located below the barking mechanism, thereby staggering the barking, peeling, and cutting mechanisms in the height direction. The present invention reduces the length space occupied by the overall structure by staggering the multi-stage conveying structure in the height direction, thereby reducing the overall length of the kenaf harvester when the multi-stage conveying structure is arranged on the kenaf harvester.

Description

Technical Field

[0001] The present invention relates to agricultural machinery and equipment, and more particularly to a conveying mechanism of a kenaf harvester. Background Art

[0002] Kenaf is an annual or perennial herb of the Malvaceae family and the genus Hibiscus, with straight stems, about 3 meters high and about 2 centimeters thick. Both the bark and stems of kenaf have their use value, so after harvesting, the bark will be peeled, and then the bark and stems can be collected and processed separately. In order to improve the efficiency of kenaf harvesting, a kenaf harvester is used to automate the harvesting, peeling, collection and bundling processes to replace traditional manual operations. Because kenaf itself is relatively long, if the various mechanisms are arranged horizontally in sequence, the overall process will occupy a longer space, and the layout length of the kenaf harvester will become too long, which will increase the space occupied by the kenaf harvester and reduce the flexibility of the movable turning. The present invention is to design a conveying mechanism applied to the kenaf harvester to achieve a reduction in the space occupied by the mechanism. Summary of the Invention

[0003] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a conveying mechanism for a kenaf harvester, which arranges each mechanism at different heights and relies on a staggered arrangement to effectively reduce the length space occupied by the entire mechanism, thereby reducing the space occupied by the kenaf harvester.

[0004] To achieve the above object, the present invention provides the following technical solutions: a conveying mechanism of a kenaf harvester, comprising a mounting frame, on which an inclined conveyor belt, a bark cutting mechanism, a peeling mechanism, and a cutting mechanism are provided;

[0005] The lower end of the inclined conveyor belt extends into a storage cavity for storing kenaf stalks. The inclined conveyor belt is provided with a plurality of partitions arranged at intervals along its length. The spaces between adjacent partitions are used to store single kenaf stalks. The upper end of the inclined conveyor belt corresponds to the side of the bark cutting mechanism and is used to convey the kenaf stalks to the bark cutting mechanism.

[0006] The peeling mechanism includes a first support portion and a first conveyor roller. The first conveyor rollers are arranged in pairs in a plurality of groups. The plurality of groups of first conveyor rollers are spaced apart along both sides of the first support portion. The plurality of groups of first conveyor rollers and the first support portion cooperate to form a space for limiting the position of kenaf stems. The kenaf stems are placed from above the first support portion and are limited in position by the first conveyor roller and the first support portion. When in operation, the first conveyor rollers clamp and convey the kenaf stems to the output end of the first support portion. The peeling mechanism is located obliquely below the output end of the peeling mechanism to receive the dropped kenaf stems.

[0007] The peeling mechanism includes a second support portion and a second conveying roller. The second conveying rollers are arranged in pairs in a plurality of groups. The plurality of second conveying rollers are spaced apart along both sides of the second support portion. The plurality of second conveying rollers cooperate with the second support portion to form a space for limiting the position of the kenaf stalks. The kenaf stalks are placed from above the second support portion and are limited by the cooperation of the second conveying rollers and the second support portion. When the second conveying rollers are in operation, they clamp the kenaf stalks and convey them to the output end of the second support portion. The cutting mechanism is located obliquely below the output end of the peeling mechanism to receive the fallen kenaf stalks, and the cutting mechanism is located below the peeling mechanism, so that the peeling mechanism, the peeling mechanism, and the cutting mechanism are staggered in the height direction.

[0008] The cutting mechanism comprises a conveyor belt, the output end of the conveyor belt corresponds to the lower part of the peeling mechanism, and a collecting chamber for receiving the kenaf stalks outputted from the cutting mechanism is provided below the peeling mechanism.

[0009] As an improvement, the first conveying rollers are arranged on the sides of the first support part so as to be horizontally movable by the first driving cylinder. The first driving cylinders on both sides drive the first conveying rollers on both sides to move horizontally, and clamp the kenaf stalks on the first support part when the first conveying rollers on both sides approach each other.

[0010] As an improvement, the second conveying rollers are arranged on the sides of the first support part so as to be horizontally movable by the second driving cylinders. The second driving cylinders on both sides drive the second conveying rollers on both sides to move horizontally, and clamp the kenaf stalks on the second support part when the second conveying rollers on both sides approach each other.

[0011] As an improvement, the surfaces of the first conveying roller and the second conveying roller are covered with sponge.

[0012] As an improvement, the skin cutting mechanism also includes a pair of first pressing rollers, which are arranged on both sides of the output end of the first support part and can move horizontally through the first driving cylinder. The surfaces of the first pressing rollers are provided with convex points arranged in a matrix. When the first pressing rollers approach each other, they clamp the kenaf stems on the first support part and squeeze the skin of the kenaf stems by the convex points.

[0013] As an improvement, the skin cutting mechanism also includes a pair of skin cutting knives, which are arranged on both sides of the output end of the first support part and are located in front of the first pressing roller so as to be horizontally movable by the first driving cylinder. The skin cutting knives cut the epidermis of the kenaf stems on both sides when the kenaf stems are transported.

[0014] As an improvement, the peeling mechanism also includes a pair of second pressing rollers, which are arranged on both sides of the output end of the second support part and can move horizontally through a second driving cylinder. The surface of the second pressing rollers is provided with a plurality of pressing edges evenly arranged along the circumferential direction. When the second pressing rollers approach each other, they clamp the kenaf stems on the second support part and squeeze the kenaf stems by the pressing edges.

[0015] As an improvement, the peeling mechanism also includes a pair of peeling knives, which are arranged on both sides of the output end of the second support part and are located in front of the second pressure roller and can be horizontally moved by the second driving cylinder. The peeling knives have spiral blades and the rotation axis of the spiral blades is parallel to the conveying direction of the kenaf stems. When the kenaf stems are conveyed, the rotating peeling knives peel off the skin of the kenaf stems on both sides.

[0016] As an improvement, the cutting mechanism also includes a cutting knife and a blocking part. The conveyor belt is arranged into two sections and a gap for the cutting knife to pass through is left between the two sections. The cutting knife is movably arranged in the gap between the two sections of the conveyor belt. The blocking part is movably arranged at the output end of the two sections of the conveyor belt. When the blocking part moves to the output end of the conveyor belt, the kenaf stems are blocked, and the cutting knife is movably cut by the cutting knife. After the cutting is completed, the blocking part and the cutting knife are moved away from the conveyor belt, and the conveyor belt is started to output the kenaf stems.

[0017] Beneficial effects of the present invention:

[0018] 1. By arranging the multi-stage conveying structure to be staggered in the height direction, the length space occupied by the entire structure is reduced, and the overall length of the kenaf harvester is reduced when the multi-stage conveying structure is arranged on the kenaf harvester.

[0019] 2. Through the multi-stage conveying structure and the clamping conveying of the conveying roller, the kenaf stalk structure can be stably and orderly conveyed, and the stalk bark cutting, stalk bark peeling and stalk cutting at each functional mechanism can be stably completed.

[0020] 3. Each mechanism is independent of each other and can connect with the upstream and downstream processes to complete the automated and mechanized collection and processing of kenaf, replacing manual labor to improve processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a side structural schematic diagram of the present invention.

[0022] Figure 2 It is a side structural schematic diagram of the inclined conveyor belt of the present invention.

[0023] Figure 3 It is a schematic diagram of the top structure of the skin cutting mechanism of the present invention.

[0024] Figure 4 It is a schematic diagram of the top structure of the peeling mechanism of the present invention.

[0025] Figure 5 It is a schematic diagram of the top structure of the cutting mechanism of the present invention. DETAILED DESCRIPTION

[0026] The specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0027] like Figure 1 、 2 , 3, 4, and 5 are specific embodiments of the conveying mechanism of the kenaf harvester of the present invention. The drawings only express the mutual coordination relationship between the structures. The positions and size ratios of the specific structures can be reasonably adjusted according to the actual product conditions, and do not limit the scope of protection of the present invention.

[0028] The specific embodiment includes a mounting frame 1, on which an inclined conveyor belt 0, a bark cutting mechanism 2, a peeling mechanism 3 and a cutting mechanism 4 are provided; the lower end of the inclined conveyor belt 0 extends into a storage cavity 01 for storing kenaf stalks, and the inclined conveyor belt 0 is provided with a plurality of partitions 02 arranged at intervals along its length, and the space between adjacent partitions 02 is used to store a single kenaf stalk, and the upper end of the inclined conveyor belt 0 corresponds to the side of the bark cutting mechanism 2 for conveying the kenaf stalks to the bark cutting mechanism 2; the bark cutting mechanism 2 includes a first support portion 21 and a first conveying portion Rollers 23, first conveying rollers 23 are arranged in pairs in several groups, and several groups of first conveying rollers 23 are arranged at intervals along both sides of the first support portion 21. Several groups of first conveying rollers 23 and the first support portion 21 cooperate to form a space for limiting the position of kenaf stems. The kenaf stems are placed from above the first support portion 21 and are limited by the first conveying rollers 23 and the first support portion 21. When the first conveying rollers 23 are running, they clamp the kenaf stems and convey them to the output end of the first support portion 21. The peeling mechanism 3 is located at the output of the skin cutting mechanism 2. The peeling mechanism 3 includes a second support portion 31 and a second conveying roller 33. The second conveying rollers 33 are arranged in pairs in a plurality of groups. The plurality of second conveying rollers 33 are arranged at intervals along both sides of the second support portion 31. The plurality of second conveying rollers 33 and the second support portion 31 cooperate to form a space for limiting the position of the kenaf stems. The kenaf stems are placed from above the second support portion 31 and are limited by the second conveying rollers 33 and the second support portion 31. When the second conveying rollers 33 are running, The kenaf stalks are clamped and conveyed to the output end of the second support part 31. The cutting mechanism 4 is located obliquely below the output end of the peeling mechanism 3 to receive the kenaf stalks that fall, and the cutting mechanism 4 is located below the peeling mechanism 2, so that the peeling mechanism 2, the peeling mechanism 3, and the cutting mechanism 4 are staggered in the height direction; the cutting mechanism 4 includes a conveyor belt 41, the output end of the conveyor belt 41 corresponds to the bottom of the peeling mechanism 3, and a collection chamber 5 for receiving the kenaf stalks output from the cutting mechanism 4 is provided below the peeling mechanism 3.

[0029] When the present invention is in use, the mounting frame 1 is mounted on a kenaf harvester, the kenaf harvester completes the kenaf harvesting through the harvesting mechanism, the branches and leaves on the stalks are cut off through the branch and leaf processing mechanism, and then the stalks are transported to the storage chamber 01. The lower end of the inclined conveyor belt 0 extends into the storage chamber 01, and the partitions 02 arranged on the surface of the inclined conveyor belt 0 are spaced apart. The size and height of the partitions 02 are designed to accommodate a single kenaf stalk. As the inclined conveyor belt 0 runs, the kenaf stalks are transported one by one to the upper end in an orderly manner. The upper end of the inclined conveyor belt 0 corresponds to the upper part of the skin cutting mechanism 2. A single kenaf stalk falls onto the first support part 21. The first conveyor rollers 23 on both sides are grouped at different positions of the first support part 21 to achieve clamping and limiting. The skin cutting tool is set on both sides of the output end of the first support part 21. The first conveyor rollers 23 are driven by an external drive mechanism. The drive mechanism is preferably a servo motor for stable start and stop control. As the kenaf stalk is transported, it contacts the skin cutting tools on both sides, and the skin on the surface of the stalk is cut from both sides by the skin cutting tools.

[0030] After leaving the bark cutting mechanism 2, the kenaf stalks are received by the peeling mechanism 3 at an angle below. The stalks are supported by the second support portion 31. Second conveying rollers 33 arranged at different positions on both sides of the second support portion 31 are used for clamping and limiting. The peeling cutters are arranged on both sides of the output end of the second support portion 31. The second conveying rollers 33 are driven by an external driving mechanism, which is preferably a servo motor for stable start and stop control. As the kenaf stalks are transported, they come into contact with the peeling cutters on both sides to peel off the cut bark of the stalks.

[0031] After leaving the peeling mechanism 3, the kenaf stalks are received by the cutting mechanism 4 located diagonally below. Cutting tools installed in the cutting mechanism 4 cut the kenaf stalks into segments, after which the stalks are conveyed to the collection chamber 5. The four-part structure is arranged at different heights and arranged in a staggered manner, effectively reducing the length and space occupied by the entire structure. This structural expansion effectively reduces the length of the kenaf harvester, making the kenaf harvester more flexible in movement and turning.

[0032] As an improved specific embodiment, the first conveying rollers 23 are arranged on the sides of the first support part 21 so as to be horizontally movable by the first driving cylinders 231. The first driving cylinders 231 on both sides drive the first conveying rollers 23 on both sides to move horizontally, and clamp the kenaf stalks on the first support part 21 when the first conveying rollers 23 on both sides approach each other.

[0033] like Figure 3As shown in the figure, only the first driving cylinders 231 are arranged on the outside of several first conveying rollers 23. In actual implementation, it can be applied to the outside of all first conveying rollers 23. The first driving cylinders 231 drive the separation to provide initial accommodation space for stems of different thicknesses. After the stems are located on the first support part 21, the first driving cylinders 231 drive the first conveying rollers 23 to close, forming a stable clamping state for the stems.

[0034] As an improved specific embodiment, the second conveying rollers 33 are arranged on the side of the first support part 21 so as to be horizontally movable by the second driving cylinders 331. The second driving cylinders 331 on both sides drive the second conveying rollers 33 on both sides to move horizontally, and clamp the kenaf stalks on the second support part 31 when the second conveying rollers 33 on both sides approach each other.

[0035] like Figure 4 As shown in the figure, only the second driving cylinders 331 are arranged on the outside of several second conveying rollers 33. In actual implementation, it can be applied to the outside of all second conveying rollers 33. The second driving cylinders 331 drive the separation to provide initial accommodation space for stems of different thicknesses. After the stems are located on the second support part 31, the second driving cylinders 331 drive the second conveying rollers 33 to close, forming a stable clamping state for the stems.

[0036] As an improved embodiment, the surfaces of the first conveying roller 23 and the second conveying roller 33 are covered with sponge.

[0037] During specific implementation, the sponge, through its elastic state, gently contacts the surface of the stem, thereby preventing the pressure of the cylinder from causing greater pressure on the stem.

[0038] As an improved specific embodiment, the skin cutting mechanism 2 also includes a pair of first pressing rollers 24, which are arranged on both sides of the output end of the first support part 21 and can be horizontally moved by the first driving cylinder 231. The surface of the first pressing rollers 24 is provided with convex points 241 arranged in a matrix. When the first pressing rollers 24 approach each other, they clamp the kenaf stems on the first support part 21 and squeeze the skin of the kenaf stems by the convex points 241.

[0039] like Figure 1 、 3As shown, the first pressing roller 24 is mainly used to squeeze the stem after the bark is cut. The matrix-arranged protrusions 241 contact and squeeze multiple different positions on the surface of the stem, promoting the initial separation of the bark from the cut position, and the loosening and separation of the bark from the stem at the squeeze position, which is conducive to more efficient scraping and peeling of the bark at the subsequent peeling mechanism 3. The outer side of the first pressing roller 24 can also be further applied with a first driving cylinder 231. The first pressing roller 24 is driven to separate by the first driving cylinder 231 to provide an initial accommodating space for stems of different thicknesses. When the stem is transported to the position of the first pressing roller 24, the first driving cylinder 231 drives the first pressing roller 24 to close, forming a stable squeezing state for the stem.

[0040] As an improved specific embodiment, the skin cutting mechanism 2 also includes a pair of skin cutting knives 22, which are arranged on both sides of the output end of the first support part 21 and are located in front of the first pressing roller 24 and can be horizontally moved by the first driving cylinder 231. When the kenaf stems are transported, the skin cutting knives 22 cut the epidermis on both sides of the kenaf stems.

[0041] like Figure 1 、 3 As shown, the paring knives 22 are located on both sides of the output end of the first support 21. As the kenaf stalks are transported, they contact the paring knives 22 on both sides, and the bark on the surface of the stalks is cut from both sides by the paring knives 22. The outer sides of the paring knives 22 can also be further equipped with a first driving cylinder 231. The paring knives 22 are driven to separate by the first driving cylinder 231 to provide initial accommodation space for stalks of different thicknesses. When the stalks are transported to the paring knives 22, the first driving cylinder 231 drives the paring knives 22 to close, forming a state of resistance against the stalks.

[0042] As an improved specific embodiment, the skin cutting knife 22 is a sheet-shaped knife 221 or a circular knife 222 arranged on the circumference of the rotating shaft.

[0043] like Figure 1 As shown, the blade 221 can cut the skin of the stem when it is transported through. Figure 3 As shown, the circular knife 222 can rotate with the rotating shaft and cut the epidermis in coordination with the conveying rotation of the stem. The rotation can be actively driven or passively rotated with the stem. The two knife embodiments can be selected according to actual needs to achieve the functional effect of cutting the epidermis.

[0044] As an improved specific embodiment, the peeling mechanism 3 also includes a pair of second pressing rollers 34, which are arranged on both sides of the output end of the second support part 31 and can be horizontally moved by a second driving cylinder 331. The surface of the second pressing roller 34 is provided with a plurality of pressing edges 341 evenly arranged along the circumferential direction. When the second pressing rollers 34 approach each other, they clamp the kenaf stems on the second support part 31 and squeeze the kenaf stems by the pressing edges 341.

[0045] like Figure 1 、 4 As shown, the second pressing roller 34 is provided to squeeze the stem bark to promote its removal. The plurality of pressing ridges 341 perform a final large-scale squeezing of the stem at the output end of the second support portion 31 to ensure that the stem bark that is still adhered is completely separated from the stem and thus falls off. The outer side of the second pressing roller 34 can also be further applied with a second driving cylinder 331. The second pressing roller 34 is driven to separate by the second driving cylinder 331 to provide an initial accommodation space for stems of different thicknesses. When the stem is transported to the position of the second pressing roller 34, the second driving cylinder 331 drives the second pressing roller 34 to close, forming a stable squeezing state for the stem.

[0046] As an improved specific embodiment, the peeling mechanism 3 also includes a pair of peeling knives 32, which are arranged on both sides of the output end of the second support part 31 and are located in front of the second pressure roller 34 and can be horizontally moved by the second driving cylinder 331. The peeling knife 32 has a spiral blade and the rotation axis of the spiral blade is parallel to the conveying direction of the kenaf stems. When the kenaf stems are conveyed, the peeling knife 32 rotates to peel off the skin of the kenaf stems on both sides.

[0047] like Figure 1 、 4 As shown, the peeling knife 32 is on both sides of the output end of the second support part 31. As the kenaf stalks are transported, they contact the peeling knives 32 on both sides. The peeling knife 32 with a spiral blade will peel off the cut stem bark. The rotation of the spiral blade will continuously act on the stem bark. The spiral blade will scrape and peel off the incision position and the peeled stem bark, promoting the separation of the stem bark from the stalk. As an optimization, multiple groups of peeling knives 32 can be further set on both sides of different positions of the second support part 31, so that the stalks can be more fully peeled when they are in motion. As the stalks are transported, they will make multiple contacts with the stem bark that has not been peeled, achieving a better peeling effect. The spiral blade will also cut the stem bark in an arc shape while peeling it, which is more conducive to peeling off the stem bark in sections. The outer side of the peeling knife 32 can also be further applied with a second driving cylinder 331. The peeling knife 32 is driven to separate by the second driving cylinder 331 to provide initial accommodation space for stems of different thicknesses. When the stem is located at or transported to the position of the peeling knife 32, the second driving cylinder 331 drives the peeling knife 32 to close, forming a resistance state against the stem.

[0048] As an improved specific embodiment, the cutting mechanism 4 further includes a cutting knife 42 and a blocking portion 43. The conveyor belt 41 is provided in two sections and a gap is left between the two sections for the cutting knife 42 to pass through. The cutting knife 42 is movably provided in the gap between the two sections of the conveyor belt 41. The blocking portion 43 is movably provided at the output end of the two sections of the conveyor belt 41. When the blocking portion 43 moves to the output end of the conveyor belt 41, the kenaf stalks are blocked, and the cutting knife 42 is movably cut by the kenaf stalks. After the cutting is completed, the blocking portion 43 and the cutting knife 42 are away from the conveyor belt 41, and the conveyor belt 41 starts to output the kenaf stalks.

[0049] like Figure 5 As shown, the kenaf stalks are taken over by the cutting mechanism 4 after leaving the peeling mechanism 3. During the taking over, the stalks are transported by the started conveyor belt 41 to the output end and blocked by the blocking portion 43; then the conveyor belt 41 stops running, and the cutting knife 42 is driven to cut the stalks at the gap between the two sections of the conveyor belt 41. Then, a fixed-length stalk segment is cut out on the front section of the conveyor belt 41, and the stalk segment is continuously output to the collecting chamber 5 after the blocking portion 43 leaves; then the remaining stalks on the rear section of the conveyor belt 41 continue to be transported to the blocking portion 43 for blocking, and continue to be cut, so that a single longer stalk is cut into multiple fixed-length segments for output, which can facilitate the subsequent collection and bundling operations of the shortened stalks. The cutting knife 42 of the cutting mechanism 4 can be set as a pair of left and right structures, and the left and right cutting knives 42 cut the stems by closing from both sides, or the cutting knife 42 can be set as a pair of upper and lower structures, and the upper cutting knife 42 rises to a level that does not affect the stems falling from the output end of the peeling mechanism 3 to the conveyor belt 41, and the upper and lower cutting knives 42 cut the stems by closing up and down.

[0050] As an improved specific embodiment, the second supporting part 31 is a roller shaft, which is rotated by an external drive, thereby driving the rotation of the kenaf stalks, and a channel 35 for the skin to fall is formed between the roller shaft and the peeling knives 32 and the second conveying roller 33 on both sides, and a collection trough 36 for collecting the skin is provided below the channel 35.

[0051] like Figure 4As shown, the second support part 31 is set as a roller. When supporting the stem, it cooperates with the second conveying rollers 33 and the peeling knife 32 on both sides to form a stable structure for the stem. When in use, the roller is driven by a motor to rotate. As the stem is conveyed, the stem rotates. The peeling knife 32 with spiral blades on both sides can better promote the peeling knife 32 to contact the separation point between the stem bark and the stem, and then the peeling knife 32 further peels off the stem bark, and the peeling knife 32 cuts the stem bark so that the stem bark is peeled off section by section. The second conveying roller 33 itself is an arc-shaped support surface, and a natural channel 35 is formed on both sides for the epidermis to fall, and a collection groove 36 for collecting the epidermis is further provided to achieve the function of collecting the stem bark. The size of the collection groove 36 is sufficient to cover the position where the stem bark may fall. As an optimization, the collection groove 36 can be further provided with an output belt so that the stem bark can be transported from the outer end to the outside for collection.

[0052] As an improved specific implementation method, an isolation net 6 is set up above the collecting chamber 5 to block the skin falling from the peeling mechanism 3.

[0053] like Figure 1 As shown, the collection chamber 5 overlaps with the upper collection trough 36. To prevent the bark from accidentally falling, an isolation net 6 can be further provided to achieve an isolation effect, ensure the cleanliness of the collection chamber 5, and facilitate management. As an optimization, the collection chamber 5 can be further provided with an output belt so that the stems can be transported outward from the outer end for collection or connected to the baling mechanism for baling.

[0054] As an improved embodiment, horizontally movable baffles 44 are further provided on both sides of the conveyor belt 41. The baffles 44 on both sides are driven by a driving mechanism to translate inwards and outwards to limit the sides of the kenaf stalks.

[0055] like Figure 5 As shown, the cutting mechanism 4 can pre-accept multiple stems and then perform a one-time cutting operation on the multiple stems. After the multiple stems are accepted and the stems are aligned with the blocking portion 43, the conveyor belt 41 is stopped, and then the baffles 44 on both sides are driven and closed by a driving mechanism such as a cylinder to clamp the stems and limit their position, ensuring that the stems are in a straight state, and then the cutting knife 42 completes the cutting of the stems. This can improve the cutting stability, ensure that the stems are cut straight, and implement the simultaneous cutting of multiple stems, reduce the high frequency of cutting and conveying operations of the cutting mechanism 4, reduce the power consumption of the equipment, and extend the service life of components.

[0056] The above are merely preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions based on the principles of the present invention are within the scope of protection of the present invention. It should be noted that improvements and modifications that do not depart from the principles of the present invention are within the scope of protection of the present invention.

Claims

1. A conveying mechanism for a kenaf harvester, comprising a mounting frame (1), characterized in that: The mounting frame (1) is provided with an inclined conveyor belt (0), a skin cutting mechanism (2), a skin peeling mechanism (3) and a cutting mechanism (4); The lower end of the inclined conveyor belt (0) extends into a storage cavity (01) for storing kenaf stalks, and the inclined conveyor belt (0) is provided with a plurality of partitions (02) arranged at intervals along its length direction, and adjacent partitions (02) are used to store single kenaf stalks, and the upper end of the inclined conveyor belt (0) corresponds to the side of the skin cutting mechanism (2) and is used to convey the kenaf stalks to the skin cutting mechanism (2); The peeling mechanism (2) includes a first support portion (21) and a first conveying roller (23), wherein the first conveying rollers (23) are arranged in pairs in a plurality of groups, and the plurality of groups of first conveying rollers (23) are arranged at intervals along both sides of the first support portion (21). The plurality of groups of first conveying rollers (23) and the first support portion (21) cooperate to form a space for limiting the position of kenaf stalks. The kenaf stalks are placed from above the first support portion (21) and are limited by the first conveying rollers (23) and the first support portion (21). When the first conveying rollers (23) are in operation, they clamp the kenaf stalks and convey them to the output end of the first support portion (21). The peeling mechanism (3) is located obliquely below the output end of the peeling mechanism (2) to receive the kenaf stalks as they fall. The peeling mechanism (3) includes a second support portion (31) and a second conveying roller (33), wherein the second conveying roller (33) is arranged in pairs in a plurality of groups, and the plurality of groups of second conveying rollers (33) are arranged at intervals along both sides of the second support portion (31). The plurality of groups of second conveying rollers (33) and the second support portion (31) cooperate to form a space for limiting the position of the kenaf stalks. The kenaf stalks are placed from above the second support portion (31) and are limited by the second conveying roller (33) and the second support portion (31). When the second conveying roller (33) is in operation, it clamps and conveys the kenaf stalks to the output end of the second support portion (31). The cutting mechanism (4) is located obliquely below the output end of the peeling mechanism (3) to receive the fallen kenaf stalks, and the cutting mechanism (4) is located below the peeling mechanism (2), so that the peeling mechanism (2), the peeling mechanism (3), and the cutting mechanism (4) are staggered in the height direction. The cutting mechanism (4) includes a conveyor belt (41), the output end of the conveyor belt (41) corresponds to the bottom of the peeling mechanism (3), and a collection chamber (5) for receiving the kenaf stalks output from the cutting mechanism (4) is provided below the peeling mechanism (3); The first conveying rollers (23) are both arranged on the side of the first support portion (21) so as to be horizontally movable by means of first driving cylinders (231), and the first driving cylinders (231) on both sides drive the first conveying rollers (23) on both sides to move horizontally, and clamp the kenaf stalks on the first support portion (21) when the first conveying rollers (23) on both sides approach each other; The second conveying rollers (33) are both arranged on the side of the second support portion (31) so as to be horizontally movable by means of second driving cylinders (331), and the second driving cylinders (331) on both sides drive the second conveying rollers (33) on both sides to move horizontally, and clamp the kenaf stalks on the second support portion (31) when the second conveying rollers (33) on both sides approach each other; The peeling mechanism (2) further comprises a pair of first pressing rollers (24), the pair of first pressing rollers (24) being arranged on both sides of the output end of the first support portion (21) so as to be horizontally movable by a first driving cylinder (231), the surfaces of the first pressing rollers (24) being provided with convex points (241) arranged in a matrix, and the first pressing rollers (24) clamping the kenaf stalks on the first support portion (21) when the first pressing rollers (24) are close to each other and squeezing the kenaf stalks epidermis by the convex points (241); The skin cutting mechanism (2) further comprises a pair of skin cutting knives (22), which are arranged on both sides of the output end of the first support portion (21) and located in front of the first pressing roller (24) so ​​as to be horizontally movable by a first driving cylinder (231). The skin cutting knives (22) cut the skin of both sides of the kenaf stems when the kenaf stems are transported; The peeling mechanism (3) further includes a pair of second pressing rollers (34), which are arranged on both sides of the output end of the second support portion (31) and can be moved horizontally by a second driving cylinder (331). The surfaces of the second pressing rollers (34) are provided with a plurality of pressing edges (341) evenly arranged along the circumferential direction. When the second pressing rollers (34) approach each other, they clamp the kenaf stalks on the second support portion (31) and squeeze the kenaf stalks with the pressing edges (341); The peeling mechanism (3) further comprises a pair of peeling knives (32), the peeling knives (32) being arranged on both sides of the output end of the second support portion (31) and being located in front of the second pressing roller (34) so ​​as to be horizontally movable by a second driving cylinder (331), the peeling knives (32) having a spiral blade and a rotation axis of the spiral blade being parallel to the conveying direction of the kenaf stalks, and the peeling knives (32) rotating when the kenaf stalks are conveyed peel the epidermis of the kenaf stalks on both sides.

2. The conveying mechanism of a kenaf harvester according to claim 1, characterized in that: The surfaces of the first conveying roller (23) and the second conveying roller (33) are covered with sponge.

3. The conveying mechanism of a kenaf harvester according to claim 1, characterized in that: The cutting mechanism (4) further comprises a cutting knife (42) and a blocking portion (43). The conveyor belt (41) is provided in two sections, and a gap is left between the two sections for the cutting knife (42) to pass through. The cutting knife (42) is movably provided in the gap between the two sections of the conveyor belt (41). The blocking portion (43) is movably provided at the output ends of the two sections of the conveyor belt (41). When the blocking portion (43) moves to the output end of the conveyor belt (41), the kenaf stalks are blocked, and the cutting knife (42) movably cuts the kenaf stalks. After the cutting is completed, the blocking portion (43) and the cutting knife (42) move away from the conveyor belt (41), and the conveyor belt (41) starts to output the kenaf stalks.

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