A rotary tillage, fertilization and seeding integrated machine

Abstract

The utility model discloses a kind of rotary tillage fertilization seeding integrated machine, it is related to agricultural machinery technical field, including mounting bracket, first rotating shaft and second rotating shaft are rotationally arranged in mounting bracket inner wall, the periphery of first rotating shaft is uniformly fixedly connected with multiple rotary tillage knives, the periphery of second rotating shaft is uniformly fixedly connected with multiple covering knives, multiple covering knives are evenly provided between multiple seeding tubes, the top of seeding tube is fixedly connected with the top of mounting bracket, covering knife is correspondingly arranged with rotary tillage knife, the height of covering knife is set higher than the height of rotary tillage knife;Rotary shell is rotationally arranged on the both sides of mounting bracket outer wall, third rotating shaft and fourth rotating shaft are rotationally arranged between two rotary shells, and the periphery of third rotating shaft is fixedly connected with vibration roller.In the utility model, the device realizes rotary tillage, fertilizer mixing, seeding and covering multiple links integration, reduces operation frequency, can complete operation without using multiple devices, saves time and labor cost, and improves the continuity of operation.

Description

Technical Field

[0001] This utility model relates to the field of agricultural machinery technology, and in particular to an integrated rotary tillage, fertilization and seeding machine. Background Technology

[0002] Rotary tillage seeders are composite agricultural machines that integrate multiple agricultural operations such as soil tillage, fertilization (optional), sowing, and soil covering. They are mainly used in conjunction with tractors and other power machinery to complete the continuous process from soil breaking to seed implantation in one operation. They are widely used in the planting of field crops (such as corn, soybeans, wheat, etc.) and some cash crops.

[0003] Existing rotary tillers typically only perform some of the tasks, requiring different devices to complete the work. This increases the number of operations, raises labor costs, and reduces the continuity of operations. Furthermore, when using a roller to compact the soil after covering it with soil, soil sticks to the roller, resulting in uneven compaction and reduced soil compaction.

[0004] Therefore, it is necessary to propose an integrated rotary tillage, fertilization, and seeding machine to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a rotary tillage, fertilization and seeding integrated machine to solve the problems of only being able to complete some operations, requiring different devices to complete the operation, increasing the number of operations, increasing labor costs, reducing the continuity of operation, and when using a pressure roller to flatten the land after covering the soil, soil will stick to the pressure roller, resulting in uneven flattening effect and reducing soil compaction.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a rotary tillage, fertilization, and seeding integrated machine, comprising a mounting frame, wherein a first rotating shaft and a second rotating shaft are rotatably arranged on the inner wall of the mounting frame, wherein a plurality of rotary tillage blades are uniformly fixedly connected to the outer circumference of the first rotating shaft, and a plurality of covering blades are uniformly fixedly connected to the outer circumference of the second rotating shaft, wherein a plurality of seeding tubes are arranged between the plurality of covering blades, the top of the seeding tubes is fixedly connected to the top of the mounting frame, and the covering blades are arranged correspondingly to the rotary tillage blades, wherein the height of the covering blades is higher than the height of the rotary tillage blades; Rotating shells are rotatably arranged on both sides of the outer wall of the mounting frame. A third rotating shaft and a fourth rotating shaft are rotatably arranged between the two rotating shells. A vibrating roller is fixedly connected to the outer periphery of the third rotating shaft. A plurality of seven-blade knives are evenly fixedly connected to the outer periphery of the fourth rotating shaft. There is a gap between the end of the seven-blade knives and the outer periphery of the vibrating roller.

[0007] Preferably, connecting plates are fixedly connected to both sides of the top surface of the mounting frame, and a seed box, a fertilizer box, and a urea box are fixedly connected between the two connecting plates. The bottom of each fertilizer box is fixedly connected to multiple third discharge nozzles, the bottom of each urea box is evenly fixedly connected to multiple second discharge nozzles, and the bottom of each seed box is evenly fixedly connected to multiple first discharge nozzles. Each first discharge nozzle is fixedly connected to a connecting pipe, and the bottom end of the connecting pipe is fixedly connected to the top of the seeding pipe.

[0008] Preferably, the seed box, fertilizer box and urea box are equipped with a canopy, and a feeding plate is fixedly connected to the top surface of the mounting frame away from the seed box. The feeding plate is inclined and the top of the feeding plate is located below the third discharge nozzle. Multiple spacers are evenly fixedly connected to the top surface of the feeding plate, and the second discharge nozzle and the corresponding third discharge nozzle are located between two corresponding spacers.

[0009] Preferably, the top surface of the mounting frame is rotatably provided with three hexagonal shafts, which are respectively rotatably connected to a plurality of second discharge nozzles, a plurality of third discharge nozzles and a plurality of first discharge nozzles. The second discharge nozzle, the third discharge nozzle and the first discharge nozzle are each rotatably provided with a plurality of blades, and the plurality of blades are fixedly connected to the outer periphery of the corresponding hexagonal shaft.

[0010] Preferably, a baffle plate is installed on the top of the mounting frame on the side away from the first rotating axis, and hydraulic cylinders are rotatably arranged on both sides of the outer wall of the mounting frame, with the piston rod end of the hydraulic cylinder rotatably connected to the top surface of the rotating shell.

[0011] Preferably, a drive motor is fixedly connected to the center of the top surface of the mounting bracket, and a connecting shaft is fixedly connected to the shaft of the drive motor. A shielding shell is fixedly installed on one side of the mounting bracket. A first gear, a second gear, a large gear, a third gear, a fourth gear, a fifth gear, and a sixth gear are rotatably arranged inside the shielding shell. A first gear is fixedly connected to the end of the first transmission wheel. The first gear meshes with the large gear. The large gear meshes with the second gear. The third and fourth gears mesh with the large gear. The fourth gear meshes with the fifth gear. The fifth gear meshes with the sixth gear. The end of the second rotating shaft passes through the mounting bracket and is fixedly connected to the sixth gear. The end of the first rotating shaft passes through the mounting bracket and is fixedly connected to the third gear.

[0012] Preferably, the mounting frame is provided with a second transmission wheel, a first transmission belt, a first rotating rod, a second transmission belt, a third transmission wheel, and two first transmission wheels on one side. A second rotating rod is rotatably mounted on one side of the mounting frame. The second gear is fixedly connected to the second rotating rod. The second rotating rod passes through the shielding shell and is fixedly connected to the second transmission wheel. The first rotating rod is rotatably mounted on one side of the mounting frame. The outer circumference of the first rotating rod is fixedly connected to the two first transmission wheels. The second transmission wheel and one first transmission wheel are both connected to the first transmission belt. The other first transmission wheel and the third transmission wheel are both connected to the second transmission belt. The end of the fourth rotating shaft is fixedly connected to the third transmission wheel. A protective shell is fixedly connected to the side wall of the shielding shell. The first transmission wheel, the second transmission wheel, and the first transmission belt are located inside the protective shell.

[0013] The technical effects and advantages of this utility model are as follows: In this invention, the device integrates rotary tillage, fertilizer mixing, sowing, and soil covering into a single process, reducing the number of operations and eliminating the need for multiple devices to complete the work, thus saving time and labor costs and improving the continuity of operations. In this invention, the vibrating roller, in cooperation with the components, can flatten and compact the soil after covering, ensuring a uniform flattening effect and improving the compactness of the soil. Furthermore, when the soil is flattened, the seven-blade can promptly scrape off the soil adhering to the vibrating roller, preventing soil clumps from falling off, ensuring sowing accuracy and covering quality. The timely cleaning of the soil greatly reduces the number of times the machine needs to be stopped for cleaning, thus ensuring the progress of the operation. In this invention, the combination of components allows the rotary tiller to fully mix fertilizer with the soil while breaking it up, reducing fertilizer waste and improving fertilizer utilization. Furthermore, the covering blade sows seeds into the soil at the same time as covering the soil, simplifying the process and improving work efficiency. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Figure 2 This is a cross-sectional schematic diagram of the present invention.

[0016] Figure 3 This is a first-person perspective schematic diagram of the transmission structure of this utility model.

[0017] Figure 4 This is a schematic diagram of the second-view transmission structure of this utility model.

[0018] In the diagram: 1. Mounting frame; 11. Feeding plate; 12. Connecting plate; 13. Partition plate; 14. Hydraulic cylinder; 15. Rotating housing; 16. Protective housing; 17. Baffle plate; 2. First rotating shaft; 21. Rotary tiller blade; 22. Second rotating shaft; 23. Covering blade; 24. Seeding tube; 25. First discharge nozzle; 26. Connecting tube; 3. Third rotating shaft; 31. Vibrating roller; 32. Fourth rotating shaft; 33. Seven-piece knife; 4. Seed box; 41. Fertilizer box; 42. Urea box; 43. Second feed nozzle; 44. Hexagonal shaft; 45. Roof; 46. Third feed nozzle; 5. Drive motor; 51. Connecting shaft; 52. First transmission wheel; 53. Second transmission wheel; 54. First transmission belt; 55. First rotating rod; 56. Second transmission belt; 57. Third transmission wheel; 6. Shielding shell; 61. First gear; 62. Second gear; 63. Large gear; 64. Third gear; 65. Fourth gear; 66. Fifth gear; 67. Sixth gear; 68. Second rotating rod. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, embodiments of this utility model, and should not be construed as limiting this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. In the description of this utility model, it should be understood that the terminology used is for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] This utility model provides, for example Figures 1-3 The rotary tillage, fertilization, and seeding integrated machine shown includes a mounting frame 1. A first rotating shaft 2 and a second rotating shaft 22 are rotatably mounted on the inner wall of the mounting frame 1. Multiple rotary tillage blades 21 are evenly fixedly connected to the outer circumference of the first rotating shaft 2, and multiple covering blades 23 are evenly fixedly connected to the outer circumference of the second rotating shaft 22. Multiple seeding tubes 24 are arranged between the covering blades 23, and the top of each seeding tube 24 is fixedly connected to the top of the mounting frame 1. The covering blades 23 are correspondingly positioned to the rotary tillage blades 21, with the covering blades 23 positioned at a higher height than the rotary tillage blades 21. During use, the first rotating shaft 2 and the second rotating shaft 22 rotate synchronously. The rotation of the first rotating shaft 2 drives the rotary tillage blades 21 to break up the soil. After covering with soil, the seeding tubes 24 evenly sow the seeds onto the land. Simultaneously, the rotation of the second rotating shaft 22 drives the covering blades 23 to rotate, and the covering blades 23 re-cover the seeds with soil. The different heights of the covering blades 23 and the rotary tillage blades 21 allow for coordinated rotary tillage and soil covering.

[0021] Furthermore, rotating shells 15 are rotatably mounted on both sides of the outer wall of the mounting frame 1. A third rotating shaft 3 and a fourth rotating shaft 32 are rotatably mounted between the two rotating shells 15. A vibrating roller 31 is fixedly connected to the outer periphery of the third rotating shaft 3, and multiple seven-blade knives 33 are evenly fixedly connected to the outer periphery of the fourth rotating shaft 32. There is a gap between the end of the seven-blade knives 33 and the outer periphery of the vibrating roller 31. During the movement of the device, the vibrating roller 31 contacts the ground. The forward force of the device causes the vibrating roller 31 to rotate along the third rotating shaft 3, thereby flattening the soil. At the same time, the rotation of the fourth rotating shaft 32 drives the seven-blade knives 33 to rotate. When the third rotating shaft 3 rotates, the seven-blade knives 33 accurately remove the soil adhering to its outer periphery. The intermittent arrangement can avoid close contact with the vibrating roller 31 and hinder its normal rotation.

[0022] In this invention, the vibrating roller 31, in cooperation with the components, can flatten and compact the soil after covering, ensuring a uniform flattening effect and improving soil compaction. Furthermore, while the soil is flattened, the seven-blade 33 can promptly scrape off the soil adhering to the vibrating roller 31, preventing soil clumps from falling off, ensuring sowing accuracy and covering quality. The timely cleaning of the soil greatly reduces the number of times the machine needs to be stopped for cleaning, thus ensuring the progress of the operation.

[0023] It should be noted that a baffle plate 17 is installed on the top of the mounting frame 1 on the side away from the first rotating shaft 2. Hydraulic cylinders 14 are rotatably installed on both sides of the outer wall of the mounting frame 1. The piston rod end of the hydraulic cylinder 14 is rotatably connected to the top surface of the rotating shell 15. The baffle plate 17 serves to shield and prevent the internal components from being damaged by rain. When the ground does not need to be compacted, the hydraulic cylinder 14 is opened. The hydraulic cylinder 14 lifts the rotating shell 15 through the piston rod. The rotating shell 15 rotates and lifts along one side, lifting the third rotating shaft 3, the vibrating roller 31, the fourth rotating shaft 32, and the seven-blade 33 off the ground.

[0024] In this utility model, connecting plates 12 are fixedly connected to both sides of the top surface of the mounting frame 1. Seed box 4, fertilizer box 41 and urea box 42 are fixedly connected between the two connecting plates 12. The bottom of fertilizer box 41 is fixed and connected to multiple third discharge nozzles 46. The bottom of urea box 42 is evenly fixed and connected to multiple second discharge nozzles 43. The bottom of seed box 4 is evenly fixed and connected to multiple first discharge nozzles 25. The first discharge nozzles 25 are fixed and connected to connecting pipes 26. The bottom end of connecting pipe 26 is fixed and connected to the top of sowing pipe 24. Seed box 4 contains seeds, fertilizer box 41 contains fertilizer, and urea box 42 contains urea. When sowing, seed box 4 delivers seeds to connecting pipe 26 through first discharge nozzles 25. Seeds enter sowing pipe 24 along connecting pipe 26 and are sown on the ground from sowing pipe 24.

[0025] It should be noted that the seed box 4, fertilizer box 41 and urea box 42 are equipped with a canopy 45. The top surface of the mounting frame 1 is fixedly connected to the side away from the seed box 4. The feeding plate 11 is inclined and the top of the feeding plate 11 is located below the third discharge nozzle 46. Multiple partition plates 13 are evenly fixedly connected to the top surface of the feeding plate 11. The second discharge nozzle 43 and the corresponding third discharge nozzle 46 are located between the corresponding two partition plates 13. When fertilizing, the fertilizer box 41 discharges waste through the third discharge nozzle 46, and the urea box 42 discharges urea through the second discharge nozzle 43. The urea and fertilizer fall above the feeding plate 11 and move downward along the inclined surface of the feeding plate 11. The partition plates 13 divide the feeding plate 11 into multiple parts. After the waste falls onto the ground, the rotary tiller 21 evenly mixes the urea and fertilizer into the soil.

[0026] It should also be noted that the top surface of the mounting frame 1 is rotatably equipped with three hexagonal shafts 44. The three hexagonal shafts 44 are rotatably connected to the corresponding multiple second discharge nozzles 43, multiple third discharge nozzles 46, and multiple first discharge nozzles 25. Multiple blades are rotatably installed inside the second discharge nozzles 43, third discharge nozzles 46, and first discharge nozzles 25. The multiple blades are fixedly connected to the outer periphery of the corresponding hexagonal shafts 44. A servo motor is installed on one side of the connecting plate 12. The servo motor drives the three hexagonal shafts 44 to rotate synchronously through the transmission structure. The cooperation between the hexagonal shafts 44 and the blades evenly conveys fertilizer and seeds out of the seed box 4, fertilizer box 41, and urea box 42. The above is the prior art and will not be described in detail here.

[0027] In this invention, the combination of components allows the rotary tiller 21 to fully mix fertilizer with soil while breaking it up, reducing fertilizer waste and improving fertilizer utilization. Meanwhile, the covering blade 23 sows seeds into the soil at the same time as covering it, simplifying the process and improving work efficiency.

[0028] In this utility model, a drive motor 5 is fixedly connected to the center of the top surface of the mounting bracket 1, and a connecting shaft 51 is fixedly connected to the shaft of the drive motor 5. A shielding shell 6 is fixedly installed on one side of the mounting bracket 1. The shielding shell 6 is rotatably equipped with a first gear 61, a second gear 62, a large gear 63, a third gear 64, a fourth gear 65, a fifth gear 66, and a sixth gear 67. The first gear 61 is fixedly connected to the end of the first transmission wheel 52. The first gear 61 meshes with the large gear 63, the large gear 63 meshes with the second gear 62, the third gear 64 and the fourth gear 65 both mesh with the large gear 63, the fourth gear 65 meshes with the fifth gear 66, and the fifth gear 66 meshes with the sixth gear 67. The two gears are meshed together. The end of the second rotating shaft 22 passes through the mounting bracket 1 and is fixedly connected to the sixth gear 67. The end of the first rotating shaft 2 passes through the mounting bracket 1 and is fixedly connected to the third gear 64. When using the device, the drive motor 5 is turned on. The drive motor 5 drives the first gear 61 to rotate through the connecting shaft 51. The rotation of the first gear 61 drives the large gear 63 to rotate. The rotation of the large gear 63 drives the third gear 64 to rotate. The rotation of the third gear 64 drives the first rotating shaft 2 to rotate. At the same time, the rotation of the large gear 63 drives the fourth gear 65 to rotate. The rotation of the fourth gear 65 drives the fifth gear 66 to rotate. The rotation of the fifth gear 66 drives the sixth gear 67 to rotate. The rotation of the sixth gear 67 drives the second rotating shaft 22 to rotate.

[0029] It should be noted that the mounting frame 1 is provided with a second transmission wheel 53, a first transmission belt 54, a first rotating rod 55, a second transmission belt 56, a third transmission wheel 57, and two first transmission wheels 52 on one side. A second rotating rod 68 is rotatably mounted on one side of the mounting frame 1. A second gear 62 is fixedly connected to the second rotating rod 68. The second rotating rod 68 passes through the shielding shell 6 and is fixedly connected to the second transmission wheel 53. The first rotating rod 55 is rotatably mounted on one side of the mounting frame 1. The outer circumference of the first rotating rod 55 is fixedly connected to the two first transmission wheels 52. The second transmission wheel 53 and one first transmission wheel 52 are both connected to the first transmission belt 54. The other first transmission wheel 52 and the third transmission wheel 57 are both connected to the second transmission belt 56. The end of the fourth rotating shaft 32 is fixedly connected to the third transmission wheel 57. The side wall of the shielding shell 6... A protective shell 16 is fixedly connected. The first transmission wheel 52, the second transmission wheel 53, and the first transmission belt 54 are located inside the protective shell 16. When the large gear 63 rotates, it drives the second gear 62 to rotate. The rotation of the second gear 62 drives the second rotating rod 68 to rotate. The rotation of the second rotating rod 68 drives the second transmission wheel 53 to rotate. The second transmission wheel 53 drives one of the first transmission wheels 52 to rotate via the first transmission belt 54. The rotation of the first transmission wheel 52 drives the first rotating rod 55 to rotate. The rotation of the first rotating rod 55 drives another first transmission wheel 52 to rotate. The other first transmission wheel 52 drives the third transmission wheel 57 to rotate via the second transmission belt 56. The rotation of the third transmission wheel 57 drives the fourth rotating shaft 32 to rotate. The protective shell 16 is used to protect the first transmission wheel 52, the second transmission wheel 53, and the first transmission belt 54.

[0030] In this invention, the device integrates rotary tillage, fertilizer mixing, sowing, and soil covering into a single process, reducing the number of operations and eliminating the need for multiple devices to complete the work, thus saving time and labor costs and improving the continuity of operations.

Claims

1. A rotary tillage, fertilization, and seeding integrated machine, comprising a mounting frame (1), characterized in that: The inner wall of the mounting frame (1) is rotatably provided with a first rotating shaft (2) and a second rotating shaft (22). Multiple rotary tillage blades (21) are uniformly fixedly connected to the outer circumference of the first rotating shaft (2), and multiple covering blades (23) are uniformly fixedly connected to the outer circumference of the second rotating shaft (22). Multiple seeding tubes (24) are provided between the multiple covering blades (23). The top of the seeding tubes (24) is fixedly connected to the top of the mounting frame (1). The covering blades (23) are correspondingly set to the rotary tillage blades (21), and the height of the covering blades (23) is higher than the height of the rotary tillage blades (21). The mounting frame (1) has rotating shells (15) rotatably arranged on both sides of its outer wall. A third rotating shaft (3) and a fourth rotating shaft (32) are rotatably arranged between the two rotating shells (15). A vibrating roller (31) is fixedly connected to the outer periphery of the third rotating shaft (3). A plurality of seven-blade knives (33) are evenly fixedly connected to the outer periphery of the fourth rotating shaft (32). There is a gap between the end of the seven-blade knives (33) and the outer periphery of the vibrating roller (31).

2. The rotary tillage, fertilization, and seeding integrated machine according to claim 1, characterized in that: The mounting frame (1) has connecting plates (12) fixedly connected to both sides of its top surface. Seed box (4), fertilizer box (41) and urea box (42) are fixedly connected between the two connecting plates (12). The bottom of the fertilizer box (41) is fixed and connected to multiple third discharge nozzles (46). The bottom of the urea box (42) is evenly fixed and connected to multiple second discharge nozzles (43). The bottom of the seed box (4) is evenly fixed and connected to multiple first discharge nozzles (25). The first discharge nozzles (25) are fixed and connected to a connecting pipe (26). The bottom end of the connecting pipe (26) is fixed and connected to the top of the seeding pipe (24).

3. The rotary tillage, fertilization, and seeding integrated machine according to claim 2, characterized in that: The seed box (4), fertilizer box (41) and urea box (42) are equipped with a canopy (45). The top surface of the mounting frame (1) is fixedly connected to a feeding plate (11) on the side away from the seed box (4). The feeding plate (11) is inclined and the top of the feeding plate (11) is located below the third discharge nozzle (46). Multiple spacers (13) are evenly fixedly connected to the top surface of the feeding plate (11). The second discharge nozzle (43) and the corresponding third discharge nozzle (46) are located between the corresponding two spacers (13).

4. The rotary tillage, fertilization, and seeding integrated machine according to claim 2, characterized in that: The mounting bracket (1) has three hexagonal shafts (44) rotatably mounted on its top surface. The three hexagonal shafts (44) are rotatably connected to a plurality of second discharge nozzles (43), a plurality of third discharge nozzles (46), and a plurality of first discharge nozzles (25). The second discharge nozzles (43), the third discharge nozzles (46), and the first discharge nozzles (25) are each rotatably mounted with a plurality of blades. The plurality of blades are fixedly connected to the outer periphery of the corresponding hexagonal shafts (44).

5. The rotary tillage, fertilization, and seeding integrated machine according to claim 1, characterized in that: A baffle plate (17) is installed on the top of the mounting frame (1) on the side away from the first rotating shaft (2). Hydraulic cylinders (14) are rotatably arranged on both sides of the outer wall of the mounting frame (1). The piston rod end of the hydraulic cylinder (14) is rotatably connected to the top surface of the rotating shell (15).

6. The rotary tillage, fertilization, and seeding integrated machine according to claim 1, characterized in that: A drive motor (5) is fixedly connected to the center of the top surface of the mounting bracket (1). A connecting shaft (51) is fixedly connected to the shaft of the drive motor (5). A shielding shell (6) is fixedly installed on one side of the mounting bracket (1). A first gear (61), a second gear (62), a large gear (63), a third gear (64), a fourth gear (65), a fifth gear (66), and a sixth gear (67) are rotatably arranged inside the shielding shell (6). A first gear (61) is fixedly connected to the end of the connecting shaft (51). The first gear (61) is connected to the large gear. Gear (63) meshes with the large gear (63) and the second gear (62). The third gear (64) and the fourth gear (65) are both meshed with the large gear (63). The fourth gear (65) meshes with the fifth gear (66). The fifth gear (66) meshes with the sixth gear (67). The end of the second rotating shaft (22) passes through the mounting bracket (1) and is fixedly connected to the sixth gear (67). The end of the first rotating shaft (2) passes through the mounting bracket (1) and is fixedly connected to the third gear (64).

7. The rotary tillage, fertilization, and seeding integrated machine according to claim 6, characterized in that: The mounting bracket (1) is provided with a second transmission wheel (53), a first transmission belt (54), a first rotating rod (55), a second transmission belt (56), a third transmission wheel (57), and two first transmission wheels (52) on one side. A second rotating rod (68) is rotatably provided on one side of the mounting bracket (1). The second gear (62) is fixedly connected to the second rotating rod (68). The second rotating rod (68) passes through the shielding shell (6) and is fixedly connected to the second transmission wheel (53). The first rotating rod (55) is rotatably provided on one side of the mounting bracket (1). The outer periphery is fixedly connected to two first transmission wheels (52), the second transmission wheel (53) and one first transmission wheel (52) are both connected to the first transmission belt (54), the other first transmission wheel (52) and the third transmission wheel (57) are both connected to the second transmission belt (56), the end of the fourth rotating shaft (32) is fixedly connected to the third transmission wheel (57), and a protective shell (16) is fixedly connected to the side wall of the shielding shell (6). The first transmission wheel (52), the second transmission wheel (53) and the first transmission belt (54) are located inside the protective shell (16).

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