A conveying feeding device and a stem harvester

Abstract

The present application relates to a kind of conveying feeding device and tobacco stem harvester, belong to agricultural machinery technical field, comprising: front conveying assembly, slide, rear conveying assembly, feeding device and drive motor, front conveying assembly includes two groups of interval distribution front conveying chain group, the gap between two groups of front conveying chain group is the conveying channel that is connected with stalk outlet;Slide is arranged between the rear end of stalk outlet and conveying channel;Rear conveying assembly front end is connected with the rear end of slide and can first contact with tobacco stem root and shift transport tobacco stem;Feeding end of feeding device is floatingly connected in the rear end of rear conveying assembly and can first crush in the root of tobacco stem and forcibly transport tobacco stem to pulverizer.The above-mentioned structure front and rear action connects smoothly, and the level of automation is high, can omit manual picking link, improve the mechanization degree of tobacco stem harvesting, reduce the labor intensity of the vast number of farmers.

Description

Technical Field

[0001] This invention relates to the field of agricultural machinery technology, and in particular to a conveying and feeding device. Background Technology

[0002] Traditional tobacco stalks are mostly harvested in stages, that is, the tobacco stalks are first pulled out by a stalk puller and scattered directly on the farmland, and then manually picked up, cleaned of soil, loaded onto trucks, and finally transported out of the field; for example, the patent number CN203801300U is named a tobacco stalk puller.

[0003] To address the problems existing in the current segmented harvesting of tobacco stalks, we provide a technical solution that uses conical rollers to clamp and pull out the stalks. After being pulled out, the stalks are directly fed into a crusher via a conveying and feeding device for crushing. The crushed stalks are temporarily stored in boxes, and then transported out of the field and unloaded once the storage boxes are full. This combined operation eliminates the manual picking process, improves the mechanization of tobacco stalk harvesting, and reduces the labor intensity of tobacco farmers.

[0004] The key to achieving the above technical solution lies in how to promptly and accurately convey and feed the pulled tobacco stalks into the crusher, ensuring a reliable connection between the crusher and the stalk puller. Therefore, developing tobacco stalk conveying and feeding technology is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] This invention provides a conveying and feeding device that solves the technical problem that manual picking is still required after tobacco stalks are pulled out.

[0006] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: a conveying and feeding device, fixed on a frame located above a stalk puller (the stalk puller can pull tobacco stalks upward), is used to transfer and transport tobacco stalks at the top stalk puller outlet and force them into a crusher, comprising: a front conveying assembly, a sliding plate, a rear conveying assembly, a feeding device, and a drive motor. The front conveyor assembly includes two sets of front conveyor chains. The two sets of front conveyor chains are fixed at intervals relative to each other on the top of the frame, and the gap between them is a conveying channel located above the stalk pulling outlet. The conveying channel is connected to the stalk pulling outlet, and its conveying direction is opposite to the traveling direction of the frame. The skateboard is fixed to the frame above the rear end of the stalk pulling outlet and below the conveying channel; The rear conveyor assembly is located behind the skateboard and is rotatably connected to the frame. The front end of the rear conveyor assembly is connected to the rear end of the skateboard, and its conveying direction is opposite to the traveling direction of the frame. The feeding device is rotatably connected to the frame and its feeding end abuts against the rear end of the rear conveyor assembly in a rolling manner; The drive motor is fixed on the frame and its output end is connected to the two sets of front conveyor chains, the rear conveyor assembly and the feeding device respectively.

[0007] The beneficial effects of this invention are as follows: By designing a conveying channel above the stalk pulling outlet at the top of the stalk pulling machine, and since the conveying channel is formed by the gap between two sets of relatively distributed front conveying chain groups, the upper, lower, front, and rear faces of the conveying channel are all open structures. When the tobacco stalks are received from the stalk pulling outlet, they will first move along the conveying direction of the conveying channel, and then gradually descend under their own weight. When they descend to a certain height, the sliding plate, which is fixed to the frame above the rear end of the stalk pulling outlet and below the conveying channel, can prevent the tobacco stalks from descending further. Then, by connecting the front end of the rear conveying assembly with the rear end of the sliding plate, it can first contact the root of the descending tobacco stalk (instead of first contacting the stalk itself), and pull the root of the tobacco stalk to be transferred and transported in the opposite direction of the frame's movement. Finally, by having the feeding end of the feeding device first crush the root of the tobacco stalk at the rear end of the rear conveying assembly, the tobacco stalk can be forcibly fed into the next process, thereby eliminating the manual picking step, improving the mechanization of tobacco stalk harvesting, and reducing the labor intensity of farmers.

[0008] Based on the above technical solution, the present invention can be further improved as follows.

[0009] Furthermore, each set of front conveyor chains includes a transmission box, a drive sprocket, a driven sprocket, and a front conveyor chain. Two transmission boxes are spaced apart on both sides of the stalk pulling outlet and are fixed relative to each other on the top of the frame. The output shafts of both transmission boxes are vertically arranged. Two drive sprockets are vertically rotatably connected to the output shafts of the two transmission boxes. Two driven sprockets are rotatably horizontally connected to the frame above the stalk pulling machine. Two front conveyor chains are spaced apart on both sides of the stalk pulling outlet along the front and rear end direction of the frame and are correspondingly connected to the drive sprocket and the driven sprocket on one side. The conveying channel is the gap between the two front conveyor chains. The output end of the drive motor is connected to the input end of the transmission box via a chain or synchronous belt.

[0010] The further beneficial effect of adopting the above is that by distributing two front conveyor chains on both sides of the stalk pulling outlet, the two front conveyor chains rotate in the rotation direction of the driving sprocket and the driven sprocket and form a conveying channel between them. The conveying channel can drive the tobacco stalks pulled out at the stalk pulling outlet to be transferred and transported in the opposite direction of the vehicle frame's movement.

[0011] Furthermore, each group consists of two sets of transmission boxes, driving sprockets, driven sprockets, and front conveyor chains arranged vertically opposite each other.

[0012] The further beneficial effect of adopting the above is that the two upper front conveyor chains and the two lower drive chains can be arranged as two parallel conveying channels above the stalk pulling outlet, thereby improving the conveying power of the conveying channels and improving the conveying capacity of the conveying and feeding device.

[0013] Furthermore, each group of the front conveyor chain also includes multiple front scrapers, which are fixed at intervals on the front conveyor chain.

[0014] The further beneficial effects of adopting the above are: the front scrapers are all vertically arranged in the conveying channel, which can assist the conveying channel and improve the speed of tobacco straw conveying.

[0015] Furthermore, the rear conveying assembly includes multiple support shafts, two rear conveying chains, and multiple rear scrapers. The multiple support shafts are all located behind the frame and are rotatably connected to both sides of the frame in a direction perpendicular to the front and rear ends of the frame. The two rear conveying chains are respectively connected to the two ends of the multiple support shafts, and the front ends of the two rear conveying chains are connected to the rear ends of the slide plate. The multiple rear scrapers are fixed at intervals on the rear conveying chains. The output end of the drive motor is connected to the support shafts via a synchronous belt or chain.

[0016] The further beneficial effect of adopting the above is that the rotation of the support shaft can drive the two rear conveyor chains to rotate, and the multiple rear scrapers can carry the root of the tobacco stalks to be transferred and transported in the opposite direction of the vehicle frame under the drive of the two rear conveyor chains.

[0017] Furthermore, the horizontal height of the plurality of support shafts gradually increases from the front end of the vehicle frame toward the rear end of the vehicle frame.

[0018] The further beneficial effect of adopting the above is that the horizontal height of the support shaft gradually increases from the front end of the frame to the rear end of the frame, which can increase the height of the tobacco stalk and facilitate subsequent feeding operations.

[0019] Furthermore, the feeding device includes a driven shaft, a support arm, a floating shaft, and crushing teeth. The driven shaft is located above the rear conveying assembly and is rotatably connected to the frame along the direction perpendicular to the front and rear ends of the frame. The driven shaft is connected to the drive motor via a timing belt, gear, or chain. The support arm is arranged along the direction perpendicular to the frame and one end is rotatably connected to the end of the driven shaft that extends out of the frame. The floating shaft is the feeding end and is arranged at the rear end of the rear conveying assembly along the direction perpendicular to the frame. One end of the floating shaft is rotatably connected to the other end of the support arm and is connected to the driven shaft via a timing belt, gear, or chain. The rotation direction of the floating shaft is opposite to the conveying direction of the rear conveying assembly. The crushing teeth are multiple and fixed at intervals on the outer periphery of the floating shaft to abut against the upper surface of the rear end of the rear conveying assembly in a crushing manner.

[0020] The further beneficial effect of adopting the above is that by rotating one end of the floating shaft to connect the support arm away from the other end of the driven shaft, since the end of the support arm close to the driven shaft is rotatably connected to the driven shaft, the floating shaft can move up and down according to the amount of tobacco stalks conveyed by the subsequent conveying assembly; at the same time, the rotation direction of the floating shaft is opposite to the conveying direction of the subsequent conveying assembly, which can force the tobacco stalks to be fed into the next process.

[0021] Furthermore, there are two support arms, one end of each support arm is rotatably connected to the two ends of the driven shaft extending from the frame, and the other end is rotatably connected to the two ends of the floating shaft.

[0022] Furthermore, the skateboard is arranged at a downward angle from the front end to its rear end.

[0023] The further beneficial effect of adopting the above is that it facilitates the conveyor assembly to contact the crop roots first rather than the tobacco stalks first.

[0024] Additionally, a tobacco stalk harvester is provided, comprising a frame, a stalk puller, a feeding device, a crusher, a storage bin, and a self-unloading device. The stalk puller is fixed to the front end of the frame. The feeding device is located above and behind the stalk puller and is fixed to the frame, with its material inlet connected to the stalk puller's pulling outlet. The crusher is located behind the feeding device and is fixed to the frame, with its crushing inlet connected to the feeding device's material outlet. The storage bin is located behind the crusher and is fixed to the frame, with its material inlet connected to the crusher's material outlet. The self-unloading device is mounted on the storage bin.

[0025] The further beneficial effects of adopting the above are: by designing a feeding device between the stalk puller and the crusher, the pulled tobacco stalks can be transported and fed into the crusher in a timely and accurate manner, realizing a reliable connection between the crusher and the stalk puller, eliminating the manual picking process, improving the mechanization of tobacco stalk harvesting, and reducing the labor intensity of farmers.

[0026] In some specific embodiments, the stalk puller includes a frame, a stalk pulling cone roller, and a floating transmission box. The frame is fixed on the vehicle frame; the stalk pulling cone roller is horizontally fixed on the frame; and the floating transmission box is fixed on the frame and drives the stalk pulling cone roller to pull the tobacco stalk upwards.

[0027] Specifically, the stalk-pulling conical roller includes a support body and a toothed plate. There are at least two support bodies, which are arranged in a straight line along the working direction and form a rotating support mechanism. The toothed plate has two types: the first toothed plate has teeth evenly distributed from the working direction to the rear to bite into the tobacco stalk, and the outer edge of the second toothed plate is a toothless area near the working direction, while the rear end is a toothed area evenly distributed to bite into the tobacco stalk. The first toothed plate and the second toothed plate are arranged alternately along the circumferential direction of the outer wall of the support mechanism.

[0028] The further beneficial effects of adopting the above are: using the toothed plates for clamping and pulling the stalk backwards results in a simpler structure compared to chain clamping, reliable stalk pulling with the interlocking toothed plates, and lower power consumption compared to the blade-type structure. The toothless zone facilitates the smooth feeding of the tobacco stalk into two or more sets of interlocking conical rollers.

[0029] Specifically, the floating transmission box includes a fixed transmission box, a right floating transmission box, a left floating transmission box, and a spacing adjustment section. The fixed transmission box is arranged at an angle, and two parallel first output shafts extend outwards in opposite directions and at the same speed. The two first output shafts are rotatably connected to the right floating transmission box and the left floating transmission box respectively. Each of the right floating transmission box and the left floating transmission box extends a second output shaft. The straight lines containing the two first output shafts and the straight lines containing the two second output shafts are arranged intersecting each other. Two sets of spacing adjustment sections are respectively provided at both ends of the right floating transmission box and the left floating transmission box, so that the second output shafts swing relative to the first output shafts.

[0030] The further beneficial effects of the above are: by using a fixed transmission box, two floating transmission boxes and a spacing adjustment part in combination, the second output shaft can swing relative to the first output shaft, which not only meets the special requirements of the stalk pulling mechanism for driving force and rotation direction, but also realizes that the center distance between the left and right stalk pulling mechanisms automatically floats with the thickness of the tobacco stalk during operation, which can meet the needs of reliable stalk pulling of different thicknesses. Attached Figure Description

[0031] Figure 1This is a side view of the feeding device according to the present invention. Figure 2 This is a top view schematic diagram of a conveying and feeding device according to the present invention; Figure 3 for Figure 2 Top view of the front-to-mid-center conveyor assembly; Figure 4 This is a schematic diagram of the internal structure of the transmission box in a conveying and feeding device of the present invention; Figure 5 This is a top view schematic diagram of the feeding device in a conveying and feeding device according to the present invention; Figure 6 This is a side view schematic diagram of a tobacco stalk harvester according to the present invention.

[0032] The attached diagram lists the components represented by each number as follows: 1. Front conveyor assembly; 11. Front conveyor chain assembly; 111. Transmission box; 1111. Box body; 1112. Drive shaft; 1113. First bevel gear; 1114. Output shaft; 1115. Second bevel gear; 112. Drive sprocket; 113. Driven sprocket; 114. Front conveyor chain; 115. Front scraper; 12. Conveying channel; 2. Slide plate; 3. Rear conveyor assembly; 31. Support shaft; 32. Rear conveyor chain; 33. Rear scraper; 4. Feeding device; 41. Driven shaft; 42. Support arm; 43. Floating shaft; 44. Crushing teeth; 5. Drive motor; 6. Frame; 7. Stalk puller; 8. Crusher; 9. Storage box; 10. Self-unloading device. Detailed Implementation

[0033] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0034] like Figure 1 As shown, a conveying and feeding device is fixed on a frame 6 located above a stalk puller 7. It is used to transfer and transport tobacco stalks from the top of the stalk puller 7 at the stalk puller outlet and force-feed them into the next process. The device includes: a front conveyor assembly 1, a sliding plate 2, a rear conveyor assembly 3, a feeding device 4, and a drive motor 5. The front conveyor assembly 1 includes two sets of front conveyor chain groups 11. The two sets of front conveyor chain groups 11 are fixed at intervals relative to each other on the top of the frame 6 and the gap between them is a conveying channel 12 located above the stalk pulling outlet. The conveying channel 12 is connected to the stalk pulling outlet and its conveying direction is opposite to the traveling direction of the frame 6. The skateboard 2 is fixed to the frame 6 above the rear end of the pole pulling outlet and below the conveying channel 12; The rear conveyor assembly 3 is located behind the slide plate 2 and is rotatably connected to the frame 6. The front end of the rear conveyor assembly 3 is connected to the rear end of the slide plate 2 and its conveying direction is opposite to the traveling direction of the frame 6. The feeding device 4 is rotatably connected to the frame 6 and its feeding end abuts against the rear end of the rear conveyor assembly 3 in a rolling manner; The drive motor 5 is fixed on the frame 6 and its output end is connected to the two sets of front conveyor chain groups 11, the rear conveyor assembly 3 and the feeding device 4 respectively.

[0035] like Figure 3 As shown, in some specific embodiments, each front conveyor chain group 11 includes a transmission box 111, a drive sprocket 112, a driven sprocket 113, and a front conveyor chain 114. Two transmission boxes 111 are spaced apart on both sides of the stalk pulling outlet and fixed relative to each other on the top of the frame 6. The output shafts 1114 of the two transmission boxes 111 are both arranged vertically. The two drive sprockets 112 are respectively vertically rotatably connected to the output shafts 1114 of the two transmission boxes 111. The two driven sprockets 113 are rotatably horizontally connected to the frame 6 above the stalk pulling machine 7. The two front conveyor chains 114 are spaced apart on both sides of the stalk pulling outlet along the front and rear end direction of the frame 6 and are correspondingly connected to the drive sprocket 112 and the driven sprocket 113 on one side. The conveying channel 12 is the gap between the two front conveyor chains 114. The output end of the drive motor 5 is connected to the input end of the transmission box 111 through a chain or synchronous belt.

[0036] like Figure 4 As shown, specifically, the transmission box 111 may include a box body 1111, a drive shaft 1112, a first bevel gear 1113, an output shaft 1114, and a second bevel gear 1115. The box body 1111 is distributed on both sides of the stalk pulling outlet and fixed to the top of the rear end of the stalk pulling machine 7. The drive shaft 1112 is horizontally rotatably connected to the box wall of the box body 1111, and one end of it extends through the box wall of the box body 1111 and is connected to the output end of the drive motor via gears, synchronous belts, or chains. A bevel gear 1113 is vertically driven and connected to the other end of the drive shaft 1112 that extends into the housing 1111; the output shaft 1114 is arranged vertically and both ends of it extend out of the top and bottom ends of the housing 1111; a second bevel gear 1115 is vertically rotatably connected to the peripheral side wall of the output shaft 1114 located inside the housing 1111 and meshes with the first bevel gear 1113; the drive sprocket 112 is vertically driven and connected to both ends of the output shaft 1114 that extend out of the housing 1111.

[0037] In some specific embodiments, each group of transmission box 111, drive sprocket 112, driven sprocket 113 and front conveyor chain 114 can be two groups arranged vertically opposite each other.

[0038] In some specific embodiments, each front conveyor chain group 11 may also include a plurality of front scrapers 115, which are fixed at intervals on the front conveyor chain 114.

[0039] In some specific embodiments, the rear conveying assembly 3 may include multiple support shafts 31, two rear conveying chains 32, and multiple rear scrapers 33. The multiple support shafts 31 are all located behind the frame 6 and are rotatably connected to both sides of the frame 6 in a direction perpendicular to the front and rear ends of the frame 6. The two rear conveying chains 32 are respectively connected to the two ends of the multiple support shafts 31, and the front ends of the two rear conveying chains 32 are connected to the rear ends of the slide plate 2. The multiple rear scrapers 33 are fixed at intervals on the rear conveying chains 32. The output end of the drive motor 5 is connected to the support shafts 31 via a synchronous belt or chain.

[0040] In some specific embodiments, the horizontal height of the plurality of support shafts 31 can gradually increase from the front end of the frame 6 toward the rear end of the frame 6.

[0041] In some specific embodiments, the feeding device 4 may include a driven shaft 41, a support arm 42, a floating shaft 43 and a rolling tooth 44. The driven shaft 41 is located above the rear conveyor assembly 3 and is rotatably connected to the frame 6 in both the front and rear end directions of the vertical frame 6. The driven shaft 41 is connected to the drive motor 5 via a timing belt, gear or chain. The support arm 42 is arranged along the front and rear end direction of the frame 6 and one end of it is rotatably connected to the end of the driven shaft 41 that extends out of the frame 6; the floating shaft 43 is the feeding end and is arranged at the rear end of the rear conveyor assembly 3 along the direction perpendicular to the front and rear end of the frame 6. One end of the floating shaft 43 is rotatably connected to the other end of the support arm 42 and is connected to the driven shaft 41 through a synchronous belt, gear or chain. The rotation direction of the floating shaft 43 is opposite to the conveying direction of the rear conveyor assembly 3; there are multiple rolling teeth 44 that are fixed at intervals on the outer periphery of the floating shaft 43 and abut against the upper surface of the rear end of the rear conveyor assembly 3 in a rolling manner.

[0042] In some specific embodiments, there can be two support arms 42, with one end of each support arm 42 rotatably connected to the two ends of the driven shaft 41 extending out of the frame 6, and the other end of each support arm 42 rotatably connected to the two ends of the floating shaft 43.

[0043] In some specific embodiments, the slide plate 2 can be arranged at a downward angle from the front end to its rear end.

[0044] like Figure 5As shown, in some specific embodiments, the system includes a frame 6, a stalk puller 7, a feeding device 4, a crusher 8, a storage bin 9, and a self-unloading device 10. The stalk puller 7 is fixed to the front end of the frame 6. The feeding device 4 is located above and behind the stalk puller 7 and is fixed to the frame 6. The material inlet of the feeding device 4 is connected to the stalk pulling outlet of the stalk puller 7. The crusher 8 is located behind the feeding device 4 and is fixed to the frame 6. The crushing inlet of the crusher 8 is connected to the material outlet of the feeding device 4. The storage bin 9 is located behind the crusher 8 and is fixed to the frame 6. The material inlet of the storage bin 9 is connected to the material outlet of the crusher 8. The self-unloading device 10 is installed on the storage bin 9.

[0045] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A conveying and feeding device, characterized in that, Fixed on a frame (6) above the stalk puller (7), used to transfer and transport tobacco stalks at the top stalk puller outlet of the stalk puller (7) and force them into the crusher, including: a front conveyor assembly (1), a slide plate (2), a rear conveyor assembly (3), a feeding device (4) and a drive motor (5). The front conveying assembly (1) includes two sets of front conveying chain groups (11). The two sets of front conveying chain groups (11) are fixed at intervals relative to each other on the top of the frame (6) and the gap between them is a conveying channel (12) located above the stalk pulling outlet. The conveying channel (12) is connected to the stalk pulling outlet and its conveying direction is opposite to the traveling direction of the frame (6). The skateboard (2) is fixed to the frame (6) above the rear end of the stalk pulling outlet and below the conveying channel (12); The rear conveying assembly (3) is located behind the slide plate (2) and is rotatably connected to the frame (6). The front end of the rear conveying assembly (3) is connected to the rear end of the slide plate (2) and its conveying direction is opposite to the traveling direction of the frame (6). The feeding device (4) is rotatably connected to the frame (6) and its feeding end abuts against the rear end of the rear conveyor assembly (3) in a rolling manner; The drive motor (5) is fixed on the frame (6) and its output end is respectively connected to the two sets of the front conveyor chain groups (11), the rear conveyor assembly (3) and the feeding device (4); Each of the aforementioned front conveyor chain groups (11) includes a transmission box (111), a drive sprocket (112), a driven sprocket (113), and a front conveyor chain (114). Two transmission boxes (111) are spaced apart on both sides of the stalk extraction outlet and fixed relative to each other on the top of the frame (6). The output shafts (1114) of both transmission boxes (111) are vertically arranged. The two drive sprockets (112) are respectively vertically rotatably connected to the output shafts (1114) of the two transmission boxes (111). The two driven sprockets (113)... 113) The upper part of the stalk puller (7) is horizontally connected to the frame (6); the two front conveyor chains (114) are distributed at intervals along the front and rear ends of the frame (6) on both sides of the stalk puller outlet and are correspondingly connected to the driving sprocket (112) and the driven sprocket (113) on one side; the conveying channel (12) is the gap between the two front conveyor chains (114); the output end of the drive motor (5) is connected to the input end of the transmission box (111) through a chain or synchronous belt; Each of the front conveyor chain assemblies (11) further includes a plurality of front scrapers (115), which are fixed at intervals on the front conveyor chain (114); The rear conveyor assembly (3) includes multiple support shafts (31), two rear conveyor chains (32), and multiple rear scrapers (33). The multiple support shafts (31) are all located behind the frame (6) and are rotatably connected to both sides of the frame (6) in a direction perpendicular to the front and rear ends of the frame (6). The two rear conveyor chains (32) are respectively connected to the two ends of the multiple support shafts (31), and the front ends of the two rear conveyor chains (32) are connected to the rear end of the slide plate (2). The multiple rear scrapers (33) are fixed at intervals on the rear conveyor chains (32). The output end of the drive motor (5) is connected to the support shafts (31) via a synchronous belt or chain. The horizontal height of the plurality of support shafts (31) gradually increases from the front end of the frame (6) toward the rear end of the frame (6).

2. The conveying and feeding device according to claim 1, characterized in that, The feeding device (4) includes a driven shaft (41), a support arm (42), a floating shaft (43), and a rolling tooth (44). The driven shaft (41) is located above the rear conveyor assembly (3) and is rotatably connected to the frame (6) in the direction perpendicular to the front and rear ends of the frame (6). The driven shaft (41) is connected to the drive motor (5) via a synchronous belt, gear, or chain. The support arm (42) is arranged along the front and rear end direction of the frame (6) and one end of it is rotatably connected to the end of the driven shaft (41) that extends out of the frame (6); the floating shaft (43) is the feeding end and is arranged along the rear end of the rear conveyor assembly (3) in a direction perpendicular to the front and rear end direction of the frame (6). One end of the floating shaft (43) is rotatably connected to the other end of the support arm (42) and is connected to the driven shaft (41) by means of a timing belt, gear or chain. The rotation direction of the floating shaft (43) is opposite to the conveying direction of the rear conveyor assembly (3); the rolling teeth (44) are multiple and fixed at intervals on the outer periphery of the floating shaft (43) to abut against the upper surface of the rear end of the rear conveyor assembly (3) in a rolling manner.

3. The conveying and feeding device according to claim 2, characterized in that, There are two support arms (42), one end of each support arm (42) is rotatably connected to the two ends of the driven shaft (41) extending out of the frame (6), and the other end is rotatably connected to the two ends of the floating shaft (43).

4. The conveying and feeding device according to claim 1, characterized in that, The skateboard (2) is arranged at a downward angle from the front end to the rear end.

5. A tobacco stalk harvester, characterized in that, The device includes a frame (6), a stalk puller (7), a feeding device (4) as described in any one of claims 1-4, a crusher (8), a storage bin (9), and a self-unloading device (10). The stalk puller (7) is fixed at the front end of the frame (6). The feeding device (4) is located above and behind the stalk puller (7) and is fixed on the frame (6). The material inlet of the feeding device (4) is connected to the stalk puller outlet of the stalk puller (7). The crusher (8) is located behind the feeding device (4) and is fixed on the frame (6). The crushing inlet of the crusher (8) is connected to the material outlet of the feeding device (4). The storage bin (9) is located behind the crusher (8) and is fixed on the frame (6). The material inlet of the storage bin (9) is connected to the material outlet of the crusher (8). The self-unloading device (10) is installed on the storage bin (9).

6. A tobacco stalk harvester according to claim 5, characterized in that, The stalk pulling machine (7) includes a frame, stalk pulling cone rollers and a floating transmission box. The frame is fixed on the vehicle frame. There are four stalk pulling cone rollers, which are arranged in pairs in two layers and are fixed horizontally at the front end of the frame. The floating transmission box is fixed on the frame and drives the stalk pulling cone rollers to pull the tobacco stalks upward.

Images