A sugarcane combined operation equipment applying a new type of root cutter

Abstract

The present invention relates to a sugarcane combined operation equipment applying a novel root cutter. The present invention includes a frame 1, and a power device 2, a root cutting device 3, a ditching device 5, a fertilizing device 6 and a hand-pushing device 7 which are installed on the frame 1. A laying device 4 is installed on the ditching device 3. The present invention drives the root cutter to work by the cooperation of a cam and a rotating shaft, converts the unsupported cutting into supported shearing, and converts the "cutting" of sugarcane into "shearing" of sugarcane, thereby improving the root cutting quality and efficiency of sugarcane stalks. In addition, the present invention also integrates the ditching and fertilizing devices, and can complete operations such as sugarcane root cutting, laying, ditching, and fertilizing at one time, with a high degree of function integration.

Description

Technical Field

[0001] The present invention relates to the technical field of agricultural machinery and equipment, and specifically relates to a sugarcane combined operation equipment. In particular, it refers to an agricultural equipment suitable for sugarcane root cutting, harvesting, laying, fertilizing and ditching in one body. Background Art

[0002] Sugarcane is an important cash crop in China, mainly planted in provinces such as Guangxi, Guangdong and Yunnan. The terrain is mostly hilly and mountainous areas, which causes great difficulties for the mechanized sowing, management and harvesting of sugarcane, and hinders the process of sugarcane mechanization. At present, most of the links from sugarcane production to harvesting in China are still completed manually, facing problems such as labor shortage, high labor intensity, time-consuming and laborious. Therefore, it is particularly important to develop sugarcane mechanized harvesting, management and other equipment.

[0003] The root cutter is one of the essential tools in the process of sugarcane mechanized harvesting, and also plays a crucial role in the quality of sugarcane harvesting. Although there are reciprocating and moving-fixed blade sugarcane root cutters, the harvesting quality and efficiency far from reach the expected effect:

[0004] Deere & Company invented a variable root cutter assembly (CN 109716925A). The root cutter assembly for a sugarcane harvester includes a first cutter, a second cutter, a first feeder, a second feeder, a cutter driver and a feeder driver. The first cutter and the second cutter are suitable for cutting off sugarcane stalks. The first feeder and the second feeder are suitable for feeding the cut sugarcane stalks. The cutter driver is coupled to the first cutter and the second cutter to rotate the first cutter and the second cutter around the first rotation axis and the second rotation axis respectively. The feeder driver is coupled to the first feeder and the second feeder to rotate the first feeder and the second feeder around the first rotation axis and the second rotation axis respectively. Wang Fenglei et al. [1-3] Through theoretical analysis, simulation tests and field tests, it shows that supported cutting can significantly improve the cutting quality of ratoons compared with unsupported cutting. However, this root cutter still relies on the chopping method to harvest sugarcane and cannot effectively ensure the improvement of sugarcane cutting quality.

[0005] China Agricultural University has invented a blade sliding cutting auxiliary device and a sugarcane root cutter (CN 108934437A), which includes a cam mechanism and a fixed support mechanism; the cam mechanism includes a cam driving rotating shaft, a cam follower, and a driven disk; the top of the cam driving rotating shaft has two inclined surfaces, and a concave hole is provided between the two inclined surfaces of the cam driving rotating shaft; the cam follower is placed on the top surface of the cam driving rotating shaft, and the driven disk is supported directly above the cam follower; the fixed support mechanism includes a fixed support column and a fixed support frame, the lower end of the fixed support column sequentially passes through the driven disk, the cam follower and is inserted into the concave hole on the cam driving rotating shaft, and the upper end of the fixed support column passes through the center position at the top of the fixed support frame, and a compression spring is arranged on the fixed support column between the fixed support frame and the driven disk. The present invention converts the inertial cutting of the blade into sliding cutting, but its function is single, and the cutting method is still unsupported cutting, so the cutting quality cannot be effectively guaranteed. Summary of the Invention

[0006] Aiming at the defects existing in the prior art, the purpose of the present invention is to provide a sugarcane combined operation equipment applying a new type of root cutter. This sugarcane combined operation equipment is based on the principle of supported cutting, uses the cooperation of a cam and a rotating shaft to drive the root cutter to work, converts unsupported chopping into supported shearing, and changes "chopping" sugarcane into "shearing" sugarcane, improving the quality and efficiency of sugarcane stalk root cutting; in addition, the present invention also integrates a ditch-opening and fertilizing device, and can complete operations such as sugarcane root cutting, laying, ditch-opening, and fertilizing at one time, with a high degree of functional integration.

[0007] To achieve the above purposes, the technical solution adopted by the present invention is:

[0008] A sugarcane combined operation equipment applying a new type of root cutter, characterized in that it includes a frame 1, and a power device 2, a root cutting device 3, a ditch-opening device 5 and a fertilizing device 6 installed on the frame 1; the laying device 4 is connected to the power device 2 and the ditch-opening device 3; the hand-pushing device 7 is installed above the middle part of the frame 1 and is used to manually control the operation direction of the equipment.

[0009] On the basis of the above solution,

[0010] The power device 2 is located at the front of the frame 1 and includes a diesel engine 21 fixedly installed on the frame 1, and a power output wheel 22 is installed on the side of the diesel engine 21; the power output wheel 22 is respectively connected to a belt pulley 23 and a rear transmission wheel 24 through a belt; the belt pulley 23 is installed on the side of a three-way gearbox 25, and an upper power shaft 26 and a lower power shaft 27 are respectively arranged above and below the three-way gearbox 25; the rear transmission wheel 24 is installed in the middle of the frame 1.

[0011] On the basis of the above solution,

[0012] The root cutting device 3 includes an L-shaped rod 31 fixedly installed at the front of the frame 1. The lower power shaft 27 is installed on the L-shaped rod 31 through bearings. One end of the upper connecting piece 33 is connected to the lower power shaft 27 through a bearing. One end of the lower connecting piece 34 is fixedly installed on the L-shaped rod 31. Two cams 35 are fixedly installed on the part of the lower power shaft 27 between the upper connecting piece 33 and the lower connecting piece 34. There is a certain angle between the axes of the two cams 35. A short shaft 36 is provided between the other end of the upper connecting piece 33 and the other end of the lower connecting piece 34. Two moving knives 37 are provided on the short shaft 36. Two fixed knives 38 are provided on both sides of the upper connecting piece 33 near one end of the short shaft 36. The two cams 35 can drive the two moving knives 37 to swing around the short shaft 33 and form a shearing motion with the two fixed knives 38 to perform root cutting operation on sugarcane.

[0013] On the basis of the above solution,

[0014] The two cams 35 have the same shape and both include a short arc segment 351 and a long arc segment 352. The center parts of the long arc segments 352 of the two cams 35 are fixedly installed on the lower power shaft 27. The angle between the axes of the two cams 35 is 105°. Cam edges 353 are provided on the edges of the short arc segments 351 of the two cams 35.

[0015] On the basis of the above solution,

[0016] The moving knife 37 is composed of a moving knife handle 371 and a moving knife edge 372. The angle between the moving knife handle 371 and the moving knife edge 372 is 135°. The two sides of the moving knife edge 372 are sharpened. The two moving knives 37 are installed on the short shaft 36 in a scissor shape with different orientations. The moving knife edges 372 can cooperate to perform a shearing motion. A compression spring 64 is installed between the two moving knife handles 371. The compression spring 64 is used to control the relative positions between the two moving knife edges 372 and between them and the two fixed knives 38. By stretching and rebounding, it ensures that the two moving knife edges 372 and the two fixed knives 38 complete the shearing operation. Stable sliding contacts can be respectively formed between the edges of the moving knife handles 371 of the two moving knives 37 and the cam edges 353 on the two cams 35.

[0017] On the basis of the above solution,

[0018] The cam edges 353 are provided on both sides of the edge of the short arc segment 351 and form a groove-like structure with the short arc segment 351. The edges of the moving knife handles 371 of the two moving knives 37 can be embedded in the corresponding groove-like structures to ensure that the edges of the moving knife handles 371 of the moving knives 37 can slide stably in the corresponding groove-like structures of the corresponding cams 35.

[0019] In addition, as Figure 7As shown, micro rollers 354 can be provided on the short arc section 351 and the long arc section 352 of the cam 35 to change the sliding contact between the moving tool holder 371 and the short arc section 351 or the long arc section 352 into rolling contact, which is more conducive to the shearing action of the moving tool 37 and is convenient for replacement when wear occurs.

[0020] On the basis of the above solution,

[0021] One side of the two fixed tools 38 facing the short shaft 33 is single-sided edge-ground, and the fixed tool 38 and the moving tool edge 372 can also cooperate to perform a shearing motion.

[0022] On the basis of the above solution,

[0023] The laying device 4 includes a support rod 45 fixedly installed above the upper connecting member 33. A reinforcing rod 47 is fixedly connected between the lower part of the support rod 45 and the frame 1. A short shaft 46 is provided above the support rod 45. Two laying belt pulleys 44 are respectively installed on the short shaft 46 and the upper power shaft 26 through rolling bearings 43; a laying belt 41 is provided between the two laying belt pulleys 44, and a plurality of laying rods 42 are fixedly arranged at equal intervals on the laying belt 41; the laying device is used for laying the cut sugarcane.

[0024] On the basis of the above solution,

[0025] A plurality of ditching devices 5 are fixedly installed at the rear of the frame 1. The ditching device 5 includes a fixing member 51 and a ditching knife 52; the fixing member 51 is used to fix the ditching device 5 on the frame 1; the ditching knife 52 is L-shaped and fixedly installed on the fixing member 51. The upper part of the ditching knife 52 is wider and the lower part is narrower.

[0026] On the basis of the above solution,

[0027] The fertilizing device 6 includes a fertilizer loading box 61 fixedly installed in the middle of the frame 1. A plurality of fertilizer discharging pipes 62 are provided at the lower part of the fertilizer loading box. A switching device 63 is installed between the fertilizer loading box 61 and the fertilizer discharging pipes 62. The bottom plate of the fertilizer loading box 61 is provided with a plurality of round holes, and the plurality of round holes correspond to the plurality of fertilizer discharging pipes 62 one by one; a short shaft is provided on the switching device 63, and one end of the short shaft is movably connected to one end of a connecting rod 65. The other end of the connecting rod 65 is eccentrically and movably connected to a driven wheel 66. The driven wheel 66 is installed on the axle of the rear transmission wheel 24. The switching device 63 reciprocates relative to the bottom plate of the fertilizer loading box 61 under the drive of the rear transmission wheel 24;

[0028] The switching device 63 is a flat plate with round holes, installed in a slide rail provided on the bottom plate of the fertilizer loading box 61, and can reciprocate relative to the fertilizer loading box 61. The number and position of the round holes on the switching device 63 correspond to the plurality of round holes at the lower part of the fertilizer loading box 61. The reciprocating sliding of the switching device 63 driven by the rear transmission wheel 24 determines whether the round holes of the fertilizer loading box 61 are connected to the fertilizer discharging pipes 62, thereby controlling the rhythmic falling of the fertilizer.

[0029] The beneficial effects of the sugarcane combined operation equipment with a new type of root cutter according to the present invention are as follows:

[0030] This device integrates sugarcane cutting, laying, ditch opening, soil cultivation and fertilization, and can work together, greatly improving work efficiency; research results show that supported cutting can significantly improve cutting quality, and this device is equipped with a new type of root cutting device based on the theory of supported cutting, which can ensure the sugarcane root cutting quality to a certain extent. Brief Description of the Drawings

[0031] The present invention has the following drawings:

[0032] Figure 1 The overall structure I of the present invention;

[0033] Figure 2 The overall structure II of the present invention;

[0034] Figure 3 The overall structure III of the present invention;

[0035] Figure 4 Schematic diagram I of the structure of the new type of root cutter;

[0036] Figure 5 Schematic diagram II of the structure of the new type of root cutter;

[0037] Figure 6 Schematic diagram III of the structure of the new type of root cutter;

[0038] Figure 7 Schematic diagram of the cam structure of the new type of root cutter;

[0039] Figure 8 Schematic diagram of the structure of the fertilization device;

[0040] Figure 9 Schematic diagram of the ditch opening device.

[0041] Description of the markings in the figure: 1. Frame; 2. Power device; 21. Diesel engine; 22. Power output wheel; 23. Belt pulley; 24. Rear transmission wheel; 25. Three-way gearbox; 26. Upper power shaft; 27. Lower power shaft; 3. Root cutting device; 31. L-shaped rod; 33. Upper connecting piece; 34. Lower connecting piece; 35. Cam; 351. Short arc segment; 352. Long arc segment; 353. Cam edge; 354. Micro roller; 36. Short shaft; 37. Moving knife; 371. Moving knife handle; 372. Moving knife edge; 38. Fixed knife; 4. Laying device; 41. Laying belt; 42. Laying rod; 43. Rolling bearing; 44. Laying belt pulley; 45. Support rod; 46. Short shaft; 47. Reinforcing rod; 5. Ditching device; 51. Fixed piece; 52. Ditching knife; 6. Fertilizing device; 61. Fertilizer loading box; 62. Lower fertilizer pipe; 63. Switching device; 7. Hand-pushing device; 64. Compression spring; 65. Connecting rod. Detailed implementation mode

[0042] The present invention will be further described in detail below with reference to the accompanying drawings.

[0043] As Figure 1-8 , a sugarcane combined operation equipment applying a new type of root cutter, includes a frame 1, and a power device 2, a root cutting device 3, a ditching device 5, a fertilizing device 6 and a hand-pushing device 7 installed on the frame 1. The laying device 4 is installed on the ditching device 3.

[0044] The power device 2 is located at the front of the frame 1, and includes a diesel engine 21 fixedly installed on the frame 1. The power output wheel 22 is installed on the side of the diesel engine 21 to provide driving force for the equipment. The power output wheel 22 is respectively connected to the belt pulley 23 and the rear transmission wheel 24 through belts. The belt pulley 23 is installed on the side of the three-way gearbox 25. An upper power shaft 26 and a lower power shaft 27 are respectively arranged above and below the three-way gearbox 25 to provide power for the laying device 4 and the root cutting device 3. The rear transmission wheel 24 is installed in the middle of the frame 1 to provide power for the fertilizing device 6.

[0045] The root cutting device 3 includes an L-shaped rod 31 fixedly installed at the front of the frame 1. The lower power shaft 27 is installed on the L-shaped rod 31 through bearings. One end of the upper connecting piece 33 is connected to the lower power shaft 27 through a bearing. One end of the lower connecting piece 34 is fixed on the L-shaped rod 31. Two cams 35 are fixedly installed on the part of the lower power shaft 27 between the upper connecting piece 33 and the lower connecting piece 34. There is a certain angle between the axes of the two cams 35. A short shaft 36 is provided between the other end of the upper connecting piece 33 and the other end of the lower connecting piece 34. Two moving knives 37 are provided on the short shaft 36. The two moving knives 37 can move around the short shaft 36. Two fixed knives 38 are provided on both sides of the upper connecting piece 33 near one end of the short shaft 36. The two cams 35 can drive the two moving knives 37 to swing around the short shaft 33 and form a shearing motion with the two fixed knives 38 to perform root cutting operation on sugarcane.

[0046] The two cams 35 have the same shape and both include a short arc section 351 and a long arc section 352. The central parts of the long arc sections 352 of the two cams 35 are fixedly installed on the lower power shaft 27. The angle between the axes of the two cams 35 is 105°. Cam edges 353 are provided on the edges of the two cams 35.

[0047] The moving knife 37 is composed of a moving knife handle 371 and a moving knife blade 372. The angle between the moving knife handle 371 and the moving knife blade 372 is 135°. The two sides of the moving knife blade 372 are sharpened. The two moving knives 37 are installed on the short shaft 36 in a scissor shape with different orientations. The moving knife blades 372 can cooperate to perform a shearing motion. A compression spring 64 is installed between the two moving knife handles 371. The compression spring 64 is used to control the relative positions between the two moving knife blades 372 and between them and the two fixed knives 38. By stretching and rebounding, it ensures that the two moving knife blades 372 and the two fixed knives 38 complete the shearing operation. Stable sliding contacts can be respectively formed between the edges of the moving knife handles 371 of the two moving knives 37 and the cam edges 353 of the two cams 35.

[0048] Preferably, the cam edges 353 are provided on both sides of the edge of the short arc section 351 and form a groove-like structure with the short arc section 351. The edges of the moving knife handles 371 of the two moving knives 37 can be embedded in the corresponding groove-like structures to ensure that the edges of the moving knife handles 371 of the moving knives 37 can slide stably in the corresponding groove-like structures of the corresponding cams 35.

[0049] Specifically, the power is output by the diesel engine 21 and transmitted through the belt 23 to the three-way gearbox 25. Among them, the lower power shaft 27 is connected to the short shaft of the cutter head 36. The rotation of the short shaft drives the rotation of the cam device 35. A compression spring 64 is installed between the knife handles and in combination with the rotation of the cam, which can make the knife handles closely adhere to the cam device. When the angle of the cam device is directly opposite the blades, the two moving knives coincide and the shearing is complete at this time. As the cam rotates, the two moving blades open and complete the shearing operation with the fixed knives on both sides.

[0050] The two fixed knives 38 are single-sidedly sharpened on the side facing the moving blade 372, and the fixed knife 38 and the moving blade 372 can also cooperate to perform a shearing operation.

[0051] The specific process of the shearing operation is as follows:

[0052] Motion state 1: When the angular bisector of the angle between the axes of the two cams 35 points to the short axis 36, the two moving knife handles 371 are at the maximum opening angle, the two moving blades 372 are combined, and the space on both sides of the moving blade 372 can accommodate the sugarcane stalks to enter;

[0053] Motion state 2: When the two cams 35 rotate driven by the lower power shaft 27, the two moving knife handles 371 slide in the groove-like structures of the two cams 35 respectively, and the opening angle becomes smaller. At the same time, under the action of the compression spring 64, the two moving blades 372 approach the corresponding fixed knives 38 respectively, and shear the sugarcane stalks entering the space on both sides of the two moving blades 372;

[0054] Motion state 3: While the two moving blades 372 and the fixed knife 38 shear the sugarcane stalks, the space between the two moving blades can accommodate other sugarcane stalks to enter;

[0055] Motion state 4: The two moving knife handles 371 continue to slide in the groove-like structures of the two cams 35. At the same time, under the action of the compression spring 64, the two moving blades 372 approach each other again, and shear the sugarcane stalks entering the space between the two moving blades 372;

[0056] Repeating the above motion states 1-4 can complete the continuous shearing operation of the sugarcane stalks.

[0057] The thickness of the fixed knife 38 and the moving knife 37 is 5 mm, the blade edge angle of the fixed knife 38 and the moving blade 372 is 20-55°, preferably 30°; the length of the fixed knife 38 and the moving blade 372 is 30 cm.

[0058] The laying device 4 includes a support rod 45 fixedly installed above the upper connecting member 33. A short axis 46 is provided above the support rod 45. The two laying belt pulleys 44 are respectively installed on the short axis 46 and the upper power shaft 26 through rolling bearings 43; a laying belt 41 is provided between the two laying belt pulleys 44. A plurality of laying rods 42 are fixedly arranged at equal intervals on the laying belt 41; the laying device is used to lay the sheared sugarcane, that is, to neatly lay the sugarcane on the ground. The laying position is on both sides of the combined operation equipment, which is determined by the rotation direction of the laying belt.

[0059] A plurality of ditching devices 5 are fixedly installed at the rear of the frame 1. The ditching device 5 includes a fixing member 51 and a ditching knife 52. The fixing member 51 is used to fix the ditching device 5 on the frame 1. The ditching knife 52 is L-shaped and fixedly installed on the fixing member 51. Its upper part is wider and the lower part is narrower, which can effectively reduce the resistance during ditching and soil banking.

[0060] The fertilizing device 6 includes a fertilizer storage box 61 fixedly installed in the middle of the frame 1. Two fertilizer discharging pipes 62 are provided at the lower part of the fertilizer storage box. Two round holes are opened on the bottom plate of the fertilizer storage box 61, and the two round holes correspond to the above two fertilizer discharging pipes 62 one by one. The switching device 63 is connected to the axle of the rear transmission wheel 24 through a connecting rod 65 and a driven wheel 66.

[0061] The switching device 63 is a flat plate with two round holes opened on it. The switching device 63 is installed in the slideway provided on the bottom plate of the fertilizer storage box 61, and the two round holes correspond to the two round holes on the bottom plate of the fertilizer storage box 61 one by one. Driven by the rear transmission wheel 24, the switching device 63 can reciprocate in the slideway to determine whether the round holes on the bottom plate of the fertilizer storage box 61 are connected to the fertilizer discharging pipes 62, thereby controlling the falling of fertilizer.

[0062] The hand-pushing device 7 is installed above the middle of the frame 1 and is used to manually control the operation direction of the equipment.

[0063] When the sugarcane combined operation equipment of this new type of root cutter is operating, the power device 2 drives the root cutting device 3 and the laying device 4 to perform shearing root cutting operation and orderly laying on the sugarcane. The ditching device 5 at the rear cleans the sugarcane roots and re-ditches, and the fertilizing device 6 pre-applies fertilizers, completing operations such as sugarcane root cutting, laying, ditching, and fertilizing at one time, improving the operation efficiency of sugarcane production.

[0064] The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0065] References:

[0066] [1] Wang Fenglei. Cutting Mechanism and Experimental Research of Coaxial Reverse Sugarcane Root Cutter [D], China Agricultural University, 2021.

[0067] [2] Wang F, Ma S, Xing H, et al. Effect of Contra-Rotating Basecutter Parameters on Basecutting Losses [J]. Sugar Tech, 2021, 23: 278-285.

[0068] [3]Wang F, Zhang W, Di M, et al. Sugarcane cutting quality using contra-rotating basecutters[J]. Transactions of the ASABE, 2019, 62(3): 737-747.

Claims

1. A sugarcane combined operation equipment applying a new type of root cutter, characterized in that, It includes a frame (1), as well as a power device (2), a root cutting device (3), a ditching device (5), and a fertilizing device (6) installed on the frame (1); the laying device (4) is connected to the power device (2) and the ditching device (5); the hand-pushing device (7) is installed above the middle part of the frame (1) and is used to manually control the operation direction of the equipment; The root cutting device (3) includes an L-shaped rod (31) fixedly installed at the front of the frame (1). The lower power shaft (27) is installed on the L-shaped rod (31) through bearings. One end of the upper connecting piece (33) is connected to the lower power shaft (27) through a bearing. One end of the lower connecting piece (34) is fixedly installed on the L-shaped rod (31). Two cams (35) are fixedly installed on the part of the lower power shaft (27) between the upper connecting piece (33) and the lower connecting piece (34). The axes of the two cams (35) form a certain angle; a first short shaft (36) is provided between the other end of the upper connecting piece (33) and the other end of the lower connecting piece (34). Two moving knives (37) are provided on the first short shaft (36); two fixed knives (38) are provided on both sides of the upper connecting piece (33) near one end of the first short shaft (36); the two cams (35) can drive the two moving knives (37) to swing around the first short shaft (36) and form a shearing motion with the two fixed knives (38) to perform root cutting operation on sugarcane; The moving knife (37) consists of two parts: a moving knife handle (371) and a moving knife edge (372). The angle between the moving knife handle (371) and the moving knife edge (372) is 135°; the two sides of the moving knife edge (372) are sharpened; the two moving knives (37) are installed on the first short shaft (36) in a scissor shape with different orientations, and the moving knife edges (372) can cooperate to perform a shearing motion; a compression spring (64) is installed between the two moving knife handles (371). The compression spring (64) is used to control the relative positions of the two moving knife edges (372) with respect to each other and with respect to the two fixed knives (38). By stretching and rebounding, it ensures that the two moving knife edges (372) and the two fixed knives (38) complete the shearing operation; stable sliding contacts can be respectively formed between the edges of the moving knife handles (371) of the two moving knives (37) and the cam edges (353) on the two cams (35).

2. The sugarcane combined operation equipment with a novel root cutter as described in claim 1, characterized in that: The power device (2) is located at the front of the frame (1) and includes a diesel engine (21) fixedly installed on the frame (1). The power output wheel (22) is installed on the side of the diesel engine (21); the power output wheel (22) is respectively connected to the belt pulley (23) and the rear transmission wheel (24) through belts; the belt pulley (23) is installed on the side of the three-way gearbox (25). The upper power shaft (26) and the lower power shaft (27) are respectively provided above and below the three-way gearbox (25); the rear transmission wheel (24) is installed in the middle of the frame (1).

3. The sugarcane combined operation equipment with a novel root cutter as described in claim 1, characterized in that: The two cams (35) have the same shape and both include a short arc segment (351) and a long arc segment (352). The center parts of the long arc segments (352) of the two cams (35) are fixedly installed on the lower power shaft (27). The included angle between the axes of the two cams (35) is 105°. Cam edges (353) are provided at the edges of the short arc segments (351) of the two cams (35).

4. The sugarcane combined operation equipment with a novel root cutter as described in claim 1, characterized in that: The cam edges (353) are arranged on both sides of the edge of the short arc segment (351), forming a groove-like structure with the short arc segment (351). The edges of the moving knife handles (371) of the two moving knives (37) can be embedded in the corresponding groove-like structures to ensure that the edges of the moving knife handles (371) of the moving knives (37) can slide stably in the corresponding groove-like structures of the cams (35). Miniature rollers (354) are arranged on the short arc segments (351) and long arc segments (352) of the cams (35).

5. The sugarcane combined operation equipment with a novel root cutter as described in claim 1, characterized in that: One side of the two fixed knives (38) facing the moving knife edges (372) is single-sidedly sharpened, and the fixed knives (38) and the moving knife edges (372) can also cooperate to perform a shearing motion.

6. The sugarcane combined operation equipment with a novel root cutter as described in claim 1, characterized in that: The laying device (4) includes a support rod (45) fixedly installed above the upper connecting piece (33). A reinforcing rod (47) is fixedly connected between the lower part of the support rod (45) and the frame (1). A second short shaft (46) is arranged above the support rod (45). Two laying belt pulleys (44) are respectively installed on the second short shaft (46) and the upper power shaft (26) through rolling bearings (43). A laying belt (41) is arranged between the two laying belt pulleys (44). A plurality of laying rods (42) are fixedly arranged at equal intervals on the laying belt (41). The laying device is used for laying the cut sugarcane.

7. The sugarcane combined operation equipment with a novel root cutter as described in claim 1, characterized in that: A plurality of ditching devices (5) are fixedly installed at the rear of the frame (1). The ditching device (5) includes a fixing piece (51) and a ditching knife (52). The fixing piece (51) is used to fix the ditching device (5) on the frame (1). The ditching knife (52) is L-shaped and fixedly installed on the fixing piece (51). The upper part of the ditching knife (52) is wider and the lower part is narrower.

8. The sugarcane combined operation equipment with a novel root cutter as described in claim 1, characterized in that: The fertilizer application device (6) includes a fertilizer storage box (61) fixedly installed in the middle of the frame (1). A plurality of fertilizer discharge pipes (62) are provided at the lower part of the fertilizer storage box. A switching device (63) is installed between the fertilizer storage box (61) and the fertilizer discharge pipes (62). The bottom plate of the fertilizer storage box (61) is provided with a plurality of round holes, and the plurality of round holes correspond to the plurality of fertilizer discharge pipes (62) one by one; A third short shaft is provided on the switching device (63), and the third short shaft is movably connected to one end of the connecting rod (65). The other end of the connecting rod (65) is eccentrically and movably connected to the driven wheel (66). The driven wheel (66) is installed on the axle of the rear transmission wheel (24). The switching device (63) reciprocates relative to the bottom plate of the fertilizer storage box (61) under the drive of the rear transmission wheel (24); The switching device (63) is a flat plate with round holes, installed in the slide rail provided on the bottom plate of the fertilizer storage box (61), and can slide reciprocally relative to the fertilizer storage box (61). The number and position of the round holes on the switching device (63) correspond to the plurality of round holes at the lower part of the fertilizer storage box (61). The reciprocating sliding of the switching device (63) driven by the rear transmission wheel (24) determines whether the round holes of the fertilizer storage box (61) are connected to the fertilizer discharge pipes (62), thereby controlling the rhythmic falling of the fertilizer.

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