Tail cutting device for sugarcane harvesting

Abstract

A tail cutting device for sugarcane harvesting comprises a machine frame, two front conveying rollers used for clamping and conveying sugarcane are vertically installed at the front end of the machine frame, the two front conveying rollers are rotationally connected with a front roller support through bearings respectively, and the front roller support is hinged to the machine frame. An elastic device for mutually pushing and pressing the two front conveying rollers is mounted between the front roller bracket and the rack; two rear conveying rollers are vertically installed on the portion, right behind the front conveying rollers, of the rack and rotationally connected with rear conveying roller supports through bearings respectively, and the two rear conveying roller supports are hinged to the rack through rear conveying roller support hinge shafts respectively. A rear conveying roller tension spring used for pushing and pressing the two rear conveying rollers is connected between the two rear conveying roller supports, a limiting guide plate used for guiding and conveying sugarcanes towards the rear conveying rollers is arranged on the portion, on the rear side of the front conveying roller, of the rack, a sugarcane channel is formed in the rear end of the rack, and a cutting device is arranged at the outer end of the sugarcane channel. The sugarcane tail cutting device is ingenious in structural arrangement, and sugarcane tail cutting can be conducted accurately.

Description

Technical Field

[0001] This utility model relates to the technical field of sugarcane harvesting equipment, specifically a sugarcane harvesting tail-cutting device. Background Technology

[0002] Sugarcane (scientific name: Saccharumofficinarum Sugarcane (Saccharum spp.) is a perennial, tall, solid herbaceous plant. It has a robust and well-developed rhizome. The culms reach a height of 3-6 meters. Sugarcane thrives in fertile soil, abundant sunshine, and areas with significant temperature differences between winter and summer. A temperate and tropical crop, sugarcane is the raw material for sugar production and can also be used to extract ethanol as an energy substitute. It is an important sugar crop in my country and a major source of sugar. The green development and sustainable high-yield cultivation of sugarcane are crucial for national sugar security.

[0003] Traditional sugarcane harvesting relies on manual labor, which is not only physically demanding but also inefficient, making it a demanding task. The sugar industry and sugarcane farmers urgently need mechanized harvesting methods. In recent years, with the significant increase in labor costs, sugarcane growers have increasingly abandoned manual sugarcane harvesting, replacing it with the use of sugarcane harvesters.

[0004] The sugarcane tip, also known as the top 2-3 tender nodes and green leaves after the sugarcane has matured, accounts for approximately 10% of the cane's weight. Because the sugarcane tip has a low sugar content and high fiber content, the sugar is carried away during the pressing process. Therefore, it is a major component containing impurities during sugarcane harvesting and a crucial step before the sugarcane enters the sugar mill. Currently, sugarcane combine harvesters use a front-end cutting mechanism to remove the sugarcane tip. However, sugarcane varies in length, and adjusting the height for each stalk during cutting is inefficient. If the front-end cutting mechanism is kept uniform in height, it can easily result in over- or under-cutting of the tip, causing economic losses for farmers and sugar mills. Therefore, the front-end cutting mechanism alone cannot complete the entire cutting process. To further reduce the impurity rate, a cutting roller is used in the leaf stripping mechanism. However, due to the low sugar content and high fiber content of the sugarcane tip, the cutting roller is ineffective. Especially when cutting sugarcane at different thicknesses, existing cutting rollers cannot automatically adjust to the thickness of the sugarcane, resulting in large fluctuations in cutting effect and difficulty in controlling the length of the cut portion, thus reducing the quality of cutting. Therefore, it is necessary to design a new sugarcane cutting device. Summary of the Invention

[0005] The purpose of this invention is to provide a sugarcane harvesting tail-cutting device. This sugarcane harvesting tail-cutting device has an ingenious structure and can accurately cut off the sugarcane tail, thereby improving the quality of sugarcane harvesting tail removal and impurity removal.

[0006] To achieve the objective of this utility model, the technical solution adopted is as follows:

[0007] A sugarcane harvesting tail-cutting device includes a frame. Two front conveyor rollers for clamping and conveying sugarcane are vertically mounted at the front end of the frame. The two front conveyor rollers are rotatably connected to front roller supports via bearings. The front roller supports are hinged to the frame. An elastic device for pushing the two front conveyor rollers against each other is installed between the front roller supports and the frame. Two rear conveyor rollers are vertically mounted on the frame directly behind the front conveyor rollers. The two rear conveyor rollers are rotatably connected to rear conveyor roller supports via bearings. The two rear conveyor roller supports are hinged to the frame via rear conveyor roller support hinge shafts. A rear conveyor roller tension spring is connected between the two rear conveyor roller supports for pushing the two rear conveyor rollers against each other. A limiting guide plate for guiding the sugarcane towards the rear conveyor rollers is provided on the frame behind the front conveyor rollers. A sugarcane channel is provided at the rear end of the frame. A cutting device for cutting off the tail of the sugarcane is provided at the outer end of the sugarcane channel.

[0008] A further preferred embodiment: the elastic device includes a lower roller push spring, a middle roller push spring, and an upper roller tension spring; the front roller support includes a lower roller support, a middle roller support, and an upper roller support; both front conveying rollers each include a lower roller, a middle roller, and an upper roller; the lower roller is rotatably connected to the lower roller support via a bearing, and the lower roller support is hinged to the frame via a lower roller support hinge shaft; the lower roller push spring is connected between the lower roller support and the frame to push the two lower rollers against each other; the middle roller is rotatably connected to the middle roller support via a bearing, and the middle roller support is hinged to the frame via a middle roller support hinge shaft; the middle roller push spring is connected between the middle roller support and the frame to push the two middle rollers against each other; the upper roller is rotatably connected to the upper roller support via a bearing, and the upper roller support is hinged to the frame via an upper roller support hinge shaft; the upper roller tension spring is connected between the two upper roller supports to push the two upper rollers against each other. An upper rotating shaft connects the upper roller and the middle roller, and a lower rotating shaft connects the middle roller and the lower roller. The upper roller is connected to the front conveyor motor via a front conveyor reducer, and the upper roller is fixedly connected to the power output shaft of the front conveyor reducer. The front conveyor reducer and the front conveyor motor are fixedly mounted on the upper roller bracket. The upper and lower rotating shafts adopt a telescopic cross-shaft universal joint coupling structure, which can be purchased and used on the market. The upper part of the upper rotating shaft is fixedly connected to the upper roller, and the lower part of the upper rotating shaft is fixedly connected to the middle roller. The upper part of the lower rotating shaft is fixedly connected to the middle roller, and the lower part of the lower rotating shaft is fixedly connected to the lower roller. The power output from the front conveyor motor directly drives the upper roller to rotate through the front conveyor reducer. The upper roller drives the middle roller to rotate through the upper rotating shaft composed of a telescopic cross-shaft universal joint coupling, and the middle roller drives the lower roller to rotate through the lower rotating shaft composed of another telescopic cross-shaft universal joint coupling. The two rear conveyor rollers are located directly behind the upper roller. The limiting guide plate extends obliquely from the frame behind the lower roller to the front end of the rear conveyor roller. The upper end of the limiting guide plate does not exceed the top of the middle roller.

[0009] A further preferred embodiment: The upper roller support is equipped with a sensor for transmitting the start-up signal of the cutting device.

[0010] A further preferred embodiment: a sensor 2 is installed on the frame above the tail-cutting device to transmit a signal that the cutting device has stopped working.

[0011] A further preferred embodiment: The cutting device includes a cutter drive rod, with a cutter for cutting the sugarcane tail mounted at its front end. The rear end of the cutter drive rod is hinged to the frame via a hinge seat. The cutter drive rod is hinged to an eccentric wheel via a push link, and the eccentric wheel is connected to a cutter motor via a cutter reducer. The power output from the cutter motor drives the eccentric wheel to rotate after passing through the cutter reducer, thereby pushing the push link to cause the cutter drive rod to swing up and down, thus enabling the cutter to cut the sugarcane tail. When the cutter drive rod swings upward and triggers sensor two, sensor two transmits a signal to the controller to stop the cutter motor from working. At this time, the cutter is positioned above the sugarcane channel.

[0012] A further preferred embodiment: a linkage roller is vertically installed on the inner side of the middle roller support, and a linkage wedge head is provided on the upper roller support for cooperating with the linkage roller to push the middle roller support to rotate outward. When sugarcane is clamped between the two upper rollers, the upper roller supports on both sides are spread apart, and the linkage wedge head on the upper roller support pushes the linkage roller to rotate the middle roller support outward, increasing the distance between the two middle rollers. The middle roller push spring is compressed, and the sugarcane conveyed from the two lower rollers is not clamped by the two middle rollers, but stays between the two middle rollers. After the sugarcane between the two upper rollers has been conveyed backward, the upper roller supports on both sides return to their original position under the action of the upper roller tension spring. The middle roller support is not pushed outward by the linkage wedge head. Under the action of the middle roller push spring, the middle rollers on both sides push and clamp the sugarcane in the middle, and the sugarcane is conveyed upward and then clamped by the two upper rollers.

[0013] A further preferred embodiment: a drive shaft is fixedly connected to the center of the rear conveyor roller, and the upper end of the drive shaft is connected to the rear conveyor roller motor through the rear conveyor roller reducer. The power output by the rear conveyor roller motor drives the drive shaft to rotate after passing through the rear conveyor roller reducer, thereby driving the rear conveyor roller to rotate.

[0014] A further preferred embodiment: the sugarcane channel is a conical channel, which facilitates the discharge of sugarcane, and then the sugarcane tail is cut off by a cutter.

[0015] This sugarcane harvesting tail-cutting device has the following advantages:

[0016] 1. The sugarcane harvesting tail-cutting device has a cleverly designed structure. It uses a front conveyor roller to lift the sugarcane upwards and push it backwards, then a rear conveyor roller to transport it out, and finally a cutting device to cut off the tail of the sugarcane. The cutting device is controlled by a signal indicating whether the front conveyor roller is in contact with the sugarcane, which can accurately cut off the sugarcane tail and reduce the impurity content of the sugarcane.

[0017] 2. The front conveyor roller consists of an independently opening and closing lower roller, middle roller, and upper roller, and is driven by an upper rotating shaft connected by multiple cross universal joint couplings. The upper roller and the middle roller, and the middle roller and the lower roller are respectively fixedly connected to a telescopic cross universal joint coupling. A linkage roller is vertically installed on the inner side of the middle roller bracket, and the upper roller bracket is provided with a linkage wedge head for cooperating with the linkage roller to push the middle roller bracket to rotate outward. When sugarcane is held between the two upper rollers, the upper roller supports on both sides are opened. The linkage wedge head on the upper roller support pushes the linkage roller to rotate the middle roller support outward, increasing the distance between the two middle rollers. The middle roller push spring is compressed, and the sugarcane conveyed from the two lower rollers is no longer held by the two middle rollers, remaining between them. After the sugarcane between the two upper rollers has been conveyed backward, the upper roller supports on both sides return to their original position under the action of the upper roller tension spring. The middle roller support is no longer pushed outward by the linkage wedge head. Under the action of the middle roller push spring, the middle rollers on both sides push and clamp the sugarcane towards the middle, conveying it upward and then being held by the two upper rollers; thus achieving orderly queuing and tail-cutting of the sugarcane. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the planar structure of the sugarcane harvesting tail-cutting device;

[0019] Figure 2 yes Figure 1 A top-down view;

[0020] Figure 3 yes Figure 1 A diagram showing the view from the right.

[0021] Figure 4 This is a schematic diagram of the internal connection structure of the front conveyor roller;

[0022] Figure 5 This is a three-dimensional structural diagram of a sugarcane harvesting tail-cutting device;

[0023] Figure 6 This is a schematic diagram of the front conveyor rollers clamping and conveying sugarcane;

[0024] Figure 7 yes Figure 6 A left-view diagram;

[0025] Figure 8 This is a schematic diagram of the structural relationship between the upper roller and the middle roller;

[0026] The names corresponding to the serial numbers in the figure are:

[0027] 1. Lower roller support; 2. Lower roller; 3. Lower roller push spring; 4. Lower roller support hinge shaft; 5. Frame; 6. Middle roller; 7. Middle roller push spring; 8. Middle roller support; 9. Middle roller support hinge shaft; 10. Upper roller; 11. Upper roller support; 12. Upper roller support hinge shaft; 13. Front conveyor reducer; 14. Front conveyor motor; 15. Upper roller tension spring; 16. Rear conveyor roller support hinge shaft; 17. Rear conveyor roller; 18. Rear conveyor roller tension spring; 19. Rear conveyor... 20. Feeding roller reducer; 21. Rear conveyor roller motor; 22. Rear conveyor roller bracket; 23. Sensor 2; 24. Cutter; 25. Cutter drive rod; 26. Hinge seat; 27. Push linkage; 28. Cutter reducer; 29. ​​Eccentric wheel; 30. Cutter motor; 31. Limiting guide plate; 32. Sugarcane channel; 33. Upper rotating shaft; 34. Bearing; 35. Sensor 1; 36. Sugarcane; 37. Linkage roller; 38. Linkage wedge head; 39. Lower rotating shaft. Detailed Implementation

[0028] To make the technical solution and advantages of this application clearer, the technical solution will be clearly and completely described below in conjunction with the embodiments. Example

[0029] A sugarcane harvesting and trimming device includes a frame 5. Two front conveying rollers for clamping and conveying sugarcane 35 are vertically mounted at the front end of the frame 5. The two front conveying rollers are rotatably connected to a front roller bracket via bearings. The front roller bracket is hinged to the frame 5. An elastic device for pushing the two front conveying rollers against each other is installed between the front roller bracket and the frame 5. Two rear conveying rollers 17 are vertically mounted on the frame 5 directly behind the front conveying rollers. The two rear conveying rollers 17 are rotatably connected to a rear conveying roller bracket 21 via bearings. The two rear conveying roller brackets 21 are hinged to the frame 5 via rear conveying roller bracket hinge shafts 16. A rear conveying roller tension spring 18 for pushing the two rear conveying rollers 17 against each other is connected between the two rear conveying roller brackets 21. A limiting guide plate 30 for guiding the sugarcane towards the rear conveying rollers 17 is provided on the frame 5 behind the front conveying rollers. A sugarcane channel 31 is provided at the rear end of the frame 5. The sugarcane channel 31 is a tapered channel. The outer end of the sugarcane channel 31 is equipped with a cutting device for cutting off the tail of the sugarcane.

[0030] The elastic device includes a lower roller push spring 3, a middle roller push spring 7, and an upper roller tension spring 15; the front roller support includes a lower roller support 1, a middle roller support 8, and an upper roller support 11; both front conveyor rollers include a lower roller 2, a middle roller 6, and an upper roller 10. The lower roller 2 is rotatably connected to the lower roller support 1 via a bearing, and the lower roller support 1 is hinged to the frame 5 via a lower roller support hinge shaft 4. The lower roller push spring 3 is connected between the lower roller support 1 and the frame 5 to hold the two lower rollers 2 together. The middle roller 6 is rotatably connected to the middle roller support 8 via a bearing. The middle roller support 8 is hinged to the frame 5 via the middle roller support hinge shaft 9. The middle roller push spring 7 is connected between the middle roller support 8 and the frame 5 to push the two middle rollers 6 against each other. The upper roller 10 is rotatably connected to the upper roller support 11 via a bearing 33. The upper roller support 11 is hinged to the frame 5 via the upper roller support hinge shaft 12. The upper roller tension spring 15 is connected between the two upper roller supports 11 to push the two upper rollers 10 against each other.

[0031] An upper rotating shaft 32 is connected to the upper roller 10 and the middle roller 6. A lower rotating shaft 38 is connected to the middle roller 6 and the lower roller 2. The upper roller 10 is connected to the front conveyor motor 14 through the front conveyor reducer 13. The upper roller 10 is fixedly connected to the power output shaft of the front conveyor reducer 13. The front conveyor reducer 13 and the front conveyor motor 14 are fixedly mounted on the upper roller bracket 11. The power output by the front conveyor motor 14 directly drives the upper roller 10 to rotate through the front conveyor reducer 13. The upper rotating shaft 32 and the lower rotating shaft 38 adopt a telescopic cross-shaft universal joint coupling structure, which can be purchased and used on the market. The upper part of the upper rotating shaft 32 is fixedly connected to the upper roller 10, the lower part of the upper rotating shaft 32 is fixedly connected to the middle roller 6, the upper part of the lower rotating shaft 38 is fixedly connected to the middle roller 6, and the lower part of the lower rotating shaft 38 is fixedly connected to the lower roller 2. Two rear conveyor rollers 17 are located directly behind the upper roller 10. The limiting guide plate 30 extends obliquely from the frame 5 behind the lower end of the lower roller 2 to the front end of the rear conveyor roller 17. The upper end of the limiting guide plate 30 does not exceed the top of the middle roller 6.

[0032] The upper roller support 11 is equipped with a sensor 34 for transmitting the start signal of the cutting device.

[0033] The frame 5 above the tail-cutting device is equipped with a sensor 22 for transmitting a signal that the cutting device has stopped working.

[0034] The cutting device includes a cutter drive rod 24. A cutter 23 for cutting the sugarcane tail is mounted at the front end of the cutter drive rod 24. The rear end of the cutter drive rod 24 is hinged to the frame 5 via a hinge seat 25. The cutter drive rod 24 is hinged to an eccentric wheel 28 via a push link 26. The eccentric wheel 28 is connected to a cutter motor 29 via a cutter reducer 27. The power output from the cutter motor 29 drives the eccentric wheel 28 to rotate after passing through the cutter reducer 27. This, in turn, pushes the link 26 to cause the cutter drive rod 24 to swing up and down, thus enabling the cutter 23 to cut the sugarcane tail. When the cutter drive rod 24 swings upward and triggers sensor 22, sensor 22 transmits a signal to the controller to stop the cutter motor 29 from working. At this time, the cutter 23 is positioned above the sugarcane channel 31.

[0035] A linkage roller 36 is vertically installed on the inner side of the middle roller support 8, and a linkage wedge head 37 is provided on the upper roller support 11 for cooperating with the linkage roller 36 to push the middle roller support 8 to rotate outward. When the sugarcane 35 is held between the two upper rollers 10, the upper roller supports 11 on both sides are opened. The linkage wedge head 37 on the upper roller support 11 pushes the linkage roller 36 to rotate the middle roller support 8 outward, increasing the distance between the two middle rollers 6. The middle roller push spring 7 is compressed, and the sugarcane 35 conveyed from the two lower rollers 2 is no longer held by the two middle rollers 6, but stays between the two middle rollers 6. After the sugarcane 35 between the two upper rollers 10 has been conveyed backward, the upper roller supports 11 on both sides return to their original position under the action of the upper roller tension spring 15. The middle roller support 8 is no longer pushed outward by the linkage wedge head 37. Under the action of the middle roller push spring 7, the middle rollers 6 on both sides push and clamp the sugarcane in the middle. The sugarcane is conveyed upward and then held by the two upper rollers 10.

[0036] A drive shaft is fixedly connected to the center of the rear conveyor roller 17. The upper end of the drive shaft is connected to the rear conveyor roller motor 20 through the rear conveyor roller reducer 19. The power output by the rear conveyor roller motor 20 drives the drive shaft to rotate after passing through the rear conveyor roller reducer 19, thereby driving the rear conveyor roller 17 to rotate.

[0037] The working process of this sugarcane harvesting tail-cutting device is as follows: The power output from the front conveyor motor 14 drives the upper roller 10 to rotate after passing through the front conveyor reducer 13. The upper roller 10 drives the middle roller 6 to rotate through the upper rotating shaft 32, which is composed of a telescopic cross-shaft universal joint coupling. The middle roller 6 drives the lower roller 2 to rotate through the lower rotating shaft 38, which is composed of another telescopic cross-shaft universal joint coupling. The root of the cut sugarcane 35 is conveyed between the two lower rollers 2. When it enters the space between the two lower rollers 2, the two lower rollers 2 are spread apart, and the sugarcane 35 is conveyed backward by the two lower rollers 2. At this time, the lower roller push spring 3 is compressed. Under the limiting action of the limiting guide plate 30, the sugarcane 35 moves upward and is clamped and conveyed by the two middle rollers 6. At this time, the middle roller push spring 7 is compressed. Under the elastic action of the lower roller push spring 3, the two lower rollers 2 are reset, waiting for the lower roller to return to its original position. A sugarcane enters; the sugarcane, held and conveyed by two middle rollers 6, is finally held and conveyed by two upper rollers 10. At this time, the upper roller tension spring 15 is stretched. Since there is no limiting guide plate 30 on the rear side of the upper roller 10, the sugarcane 35 held and conveyed by the two upper rollers 10 is conveyed backward, and then held and conveyed by the rear conveying roller 17, and discharged through the sugarcane channel 31. When the sugarcane is conveyed backward to the two upper rollers 10 and held at the tail of the sugarcane, there is no opening force of the sugarcane. Under the action of the upper roller tension spring 15, the two upper rollers 10 reset. The sensor 34 is triggered and transmits the signal to the controller. The controller controls the cutter motor 29 to work. The power output of the cutter motor 29 drives the eccentric wheel 28 to rotate after passing through the cutter reducer 27. This drives the connecting rod 26 to drive the cutter drive rod 24 to swing up and down, so that the cutter 23 cuts the sugarcane tail. When the cutter drive rod 24 swings upward and triggers sensor 22, sensor 22 transmits a signal to the controller to stop the cutter motor 29 from working. At this time, the cutter 23 is located above the sugarcane passage 31, waiting for the next sugarcane to pass before cutting the sugarcane tail. Since a linkage roller 36 is vertically installed on the inner side of the middle roller support 8, and a linkage wedge head 37 is provided on the upper roller support 11 to cooperate with the linkage roller 36 to push the middle roller support 8 to rotate outward. When the sugarcane 35 is held between the two upper rollers 10, the upper roller supports 11 on both sides are opened. The linkage wedge head 37 on the upper roller support 11 pushes the linkage roller 36 to rotate the middle roller support 8 outward, thus increasing the distance between the two middle rollers 6. The two middle rollers 6 are idling and do not hold the sugarcane. The middle roller push spring 7 is compressed. The sugarcane 35 that is held and conveyed from the two lower rollers 2 is not held by the two middle rollers 6 and stays between the two middle rollers 6. After the sugarcane 35 between the two upper rollers 10 has been conveyed backward, the upper roller supports 11 on both sides return to their original position under the action of the upper roller tension spring 15. The middle roller support 8 is not pushed outward by the linkage wedge head 37. Under the action of the middle roller push spring 7, the middle rollers 6 on both sides push and hold the sugarcane in the middle. The sugarcane is conveyed upward and then held by the two upper rollers 10. The above operation is repeated to make the sugarcane conveyed backward in an orderly manner and cut off the tail.

[0038] The foregoing description is not intended to limit this application, nor is this application limited to the examples described above. Any changes, modifications, additions, or substitutions made by those skilled in the art within the scope of this application should fall within the protection scope of this application.

Claims

1. A sugarcane harvesting tail-cutting device, characterized in that: The machine includes a frame (5), at the front end of which two front conveyor rollers for clamping and conveying sugarcane (35) are vertically mounted. The two front conveyor rollers are rotatably connected to a front roller bracket via bearings. The front roller bracket is hinged to the frame (5). An elastic device for pushing the two front conveyor rollers against each other is installed between the front roller bracket and the frame (5). Two rear conveyor rollers (17) are vertically mounted on the frame (5) directly behind the front conveyor rollers. The two rear conveyor rollers (17) are rotatably connected to a rear conveyor roller bracket (21) via bearings. Two rear conveyor roller supports (21) are respectively hinged to the frame (5) via rear conveyor roller support hinge shaft (16). A rear conveyor roller tension spring (18) is connected between the two rear conveyor roller supports (21) to push the two rear conveyor rollers (17) against each other. A limiting guide plate (30) for guiding the sugarcane toward the rear conveyor roller (17) is provided on the frame (5) behind the front conveyor roller. A sugarcane channel (31) is provided at the rear end of the frame (5). A cutting device for cutting off the tail of the sugarcane is provided at the outer end of the sugarcane channel (31).

2. The sugarcane harvesting tail-cutting device according to claim 1, characterized in that: The elastic device includes a lower roller push spring (3), a middle roller push spring (7), and an upper roller tension spring (15); the front roller support includes a lower roller support (1), a middle roller support (8), and an upper roller support (11); both front conveyor rollers include a lower roller (2), a middle roller (6), and an upper roller (10). The lower roller (2) is rotatably connected to the lower roller support (1) via a bearing. The lower roller support (1) is hinged to the frame (5) via a lower roller support hinge shaft (4). The lower roller push spring (3) is connected between the lower roller support (1) and the frame (5) to push the two lower rollers (2) against each other. The middle roller (6) is rotatably connected to the middle roller support (8) via a bearing. The middle roller support (8) is hinged to the frame (5) via a middle roller support hinge shaft (9). The middle roller push spring (7) is connected to the middle roller support (15). 8) and the frame (5) are used to push the two middle rollers (6) against each other; the upper roller (10) is rotatably connected to the upper roller bracket (11) through the bearing (33), the upper roller bracket (11) is hinged to the frame (5) through the upper roller bracket hinge shaft (12), the upper roller tension spring (15) is connected between the two upper roller brackets (11) to push the two upper rollers (10) against each other; the upper roller (10) and the middle roller (6) are connected by an upper rotating shaft (32), the middle roller (6) and the lower roller (2) are connected by a lower rotating shaft (38), the upper roller (10) is connected to the front conveyor motor (14) through the front conveyor reducer (13), the upper roller (10) and the power output shaft of the front conveyor reducer (13) are fixedly connected, the front conveyor reducer (13) and the front conveyor motor (14) are fixedly installed on the upper roller bracket (11).

3. The sugarcane harvesting tail-cutting device according to claim 2, characterized in that: The upper roller support (11) is equipped with a sensor (34) for transmitting the start signal of the cutting device.

4. The sugarcane harvesting tail-cutting device according to claim 1 or 3, characterized in that: The frame (5) above the tail-cutting device is equipped with a sensor (22) for transmitting a signal that the cutting device has stopped working.

5. The sugarcane harvesting tail-cutting device according to claim 1 or 3, characterized in that: The cutting device includes a cutter drive rod (24), with a cutter (23) for cutting the sugarcane tail installed at the front end of the cutter drive rod (24). The rear end of the cutter drive rod (24) is hinged to the frame (5) through a hinge seat (25). The cutter drive rod (24) is hinged to an eccentric wheel (28) through a push link (26). The eccentric wheel (28) is connected to the cutter motor (29) through a cutter reducer (27).

6. The sugarcane harvesting tail-cutting device according to claim 2, characterized in that: The inner side of the middle roller bracket (8) is vertically mounted with a linkage roller (36), and the upper roller bracket (11) is provided with a linkage wedge head (37) for cooperating with the linkage roller (36) to push the middle roller bracket (8) to rotate outward.

7. The sugarcane harvesting tail-cutting device according to claim 1, characterized in that: A drive shaft is fixedly connected to the center of the rear conveyor roller (17). The upper end of the drive shaft is connected to the rear conveyor roller motor (20) through the rear conveyor roller reducer (19). The power output by the rear conveyor roller motor (20) drives the drive shaft to rotate after passing through the rear conveyor roller reducer (19), thereby driving the rear conveyor roller (17) to rotate.

8. The sugarcane harvesting tail-cutting device according to claim 1, characterized in that: The sugarcane channel (31) is a conical channel.

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