Rotary cultivator with anti-winding cutter shaft

Abstract

The invention belongs to the technical field of rotary cultivators, and discloses a rotary cultivator with an anti-winding cutter shaft. Comprising a rack, a first connecting rod is rotationally connected to the interior of the rack, three sets of knife rollers are fixedly connected to the outer side of the first connecting rod, first spur gears are fixedly connected to the two ends of the first connecting rod correspondingly, and second spur gears are meshed with the outer sides of the first spur gears and rotationally connected with the outer side of the rack; the outer side of the second spur gear is engaged with a third spur gear, and a second connecting rod is fixedly connected into the third spur gear. Through the structural design of the reciprocating mechanism, the first shear knife and the second shear knife, weeds are gathered among the shear knives through centrifugal force generated by rotation of the knife roll, the reciprocating mechanism drives the first shear knife and the second shear knife to swing through a power source of the knife roll, the weeds are effectively cut off and removed, the winding phenomenon is avoided, smooth rotation of the knife roll is ensured, and the service life of the device is prolonged. The design shows a remarkable anti-winding effect and an operation automation advantage.

Description

Technical Field

[0001] The present invention relates to the technical field of rotary tillers, and more specifically, the present invention relates to a rotary tiller with an anti-winding cutter shaft. Background Art

[0002] ‌A rotary tiller is a power-driven tillage machine, a tillage machine that is matched with a tractor to complete plowing and harrowing operations. As an indispensable agricultural machine in agricultural production, its performance and efficiency directly affect the quality and benefits of agricultural production.

[0003] A rotary tiller is mostly composed of a frame, a motor, a gear set, a cutter roller, etc. The frame of the rotary tiller is connected to the frame of the tractor. The frame is used to support and connect other components. Its working principle is as follows: The motor drives the gear set to rotate, and when the gear set rotates, it will synchronously drive the cutter roller to rotate. When the cutter roller contacts the land, it cuts off the soil ridges and throws them backward. After hitting the frame, they are crushed and fall to the ground. The surface of the land after tillage is flat and soft, which can meet the requirements of intensive cultivation.

[0004] However, in the actual use process, the cutter roller of the rotary tiller often encounters winding problems. This is mainly because weeds, root stubbles, and soil blocks in the soil are easily wound between multiple groups of cutter rollers during the rotation of the cutter roller, resulting in the rotation of the cutter roller being blocked, and further affecting the operation efficiency and operation quality of the rotary tiller. Summary of the Invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention proposes a rotary tiller with an anti-winding cutter shaft.

[0006] To achieve the above object, the present invention provides the following technical solution: A rotary tiller with an anti-winding cutter shaft, including a frame, a connecting rod one is rotatably connected inside the frame, three groups of cutter rollers are fixedly connected to the outside of the connecting rod one, positive gears one are fixedly connected to both ends of the connecting rod one, a positive gear two is meshed with the outside of the positive gear one, the positive gear two is rotatably connected to the outside of the frame, a positive gear three is meshed with the outside of the positive gear two, a connecting rod two is fixedly connected inside the positive gear three, and a motor is installed at one end of the connecting rod two. It further includes: A first shearing knife and a second shearing knife. There are three groups of the first shearing knife and the second shearing knife. The three groups of the first shearing knife and the second shearing knife are all arranged inside the frame. Fixing rods are fixedly connected to the outside of the first shearing knife and the second shearing knife. One end of the fixing rod away from the first shearing knife is rotatably connected to a fixing block, and the fixing block is fixedly connected to the top of the frame; Guide grooves are respectively opened inside the first shearing knife and the second shearing knife. A first guide rod is slidably connected inside the guide groove. One end of the first guide rod is fixedly connected to a concave plate, and a reciprocating mechanism for driving the concave plate to move up and down is arranged on the outside of the connecting rod two.

[0007] Further, it includes a frame. Inside the frame, a first connecting rod is rotatably connected. On the outer side of the first connecting rod, three groups of cutter rollers are fixedly connected. At both ends of the first connecting rod, first spur gears are fixedly connected. On the outer side of the first spur gears, second spur gears are meshed. The second spur gears are rotatably connected to the outer side of the frame. On the outer side of the second spur gears, third spur gears are meshed. Inside the third spur gears, a second connecting rod is fixedly connected. At one end of the second connecting rod, a motor is installed. It is characterized in that it further includes: A first shearing knife and a second shearing knife. There are three groups of the first shearing knife and the second shearing knife. The three groups of the first shearing knife and the second shearing knife are all arranged inside the frame. On the outer sides of the first shearing knife and the second shearing knife, fixing rods are fixedly connected. At the end of the fixing rod far away from the first shearing knife, a fixing block is rotatably connected. The fixing block is fixedly connected to the top of the frame; Guide grooves are respectively opened inside the first shearing knife and the second shearing knife. Inside the guide grooves, a first guide rod is slidably connected. At one end of the first guide rod, a concave plate is fixedly connected. On the outer side of the second connecting rod, a reciprocating mechanism is arranged for driving the concave plate to move up and down.

[0008] Further, four filter barrels are fixedly connected inside the frame. At the tops of the four filter barrels, air delivery pipes are fixedly connected. At the end of the air delivery pipe far away from the filter barrel, a pressure pipe is fixedly connected. The pressure pipe is fixedly connected to the top of the frame. At the top of the frame, two pairs of top plates are fixedly connected. Between the two pairs of top plates, a pair of limiting rods are fixedly connected. On the outer sides of the pair of limiting rods, a reciprocating block is slidably connected. At the top of the reciprocating block, a square block is fixedly connected. At both ends of the square block, piston rods are fixedly connected. At the end of the piston rod far away from the square block, a piston plate is fixedly connected. The piston plate is of a size adapted to the inner wall of the pressure pipe. On the outer side of the second connecting rod, a power mechanism is arranged for driving the piston plate to move horizontally back and forth.

[0009] Further, the power mechanism includes a pair of guiding inclined blocks, a pair of second guiding rods, a cross bar, a pair of second limiting square rings, a cross plate, a first clamping rod and a first hole groove. The pair of guiding inclined blocks are both fixedly connected to the outer side of the second connecting rod. The pair of second guiding rods are respectively arranged on both sides of the guiding inclined blocks. The cross bar is fixedly connected to the tops of the pair of second guiding rods. The pair of second limiting square rings are respectively slidably connected to the outer side of the cross bar. At the ends of the pair of second limiting square rings far away from the cross bar, they are fixedly connected to the top of the frame. The cross plate is fixedly connected to the outer side of the cross bar. The first clamping rod is slidably connected inside the cross plate. A first hole groove is opened at the top of the square block. The bottom end of the first clamping rod is arranged inside the first hole groove.

[0010] Further, a first magnetic attraction plate is fixedly connected to the outer side of the first clamping rod. The first magnetic attraction plate is located below the cross plate. The first magnetic attraction plate and the cross plate attract each other with opposite polarities.

[0011] Further, a first magnetic attraction plate is fixedly connected to the outer side of the first clamping rod. The first magnetic attraction plate is located below the cross plate, and the first magnetic attraction plate and the cross plate attract each other with opposite polarities.

[0012] Further, the driving mechanism includes a positive and negative thread lead screw, a pair of connecting plates, a second motor, and a support rod. A slider is fixedly connected inside the threaded block. The positive and negative thread lead screw is in threaded connection with the slider. The pair of connecting plates are both fixedly connected to the top of the frame. The two ends of the positive and negative thread lead screw are respectively rotationally connected to the pair of connecting plates. The second motor is installed outside the connecting plate. The output end of the second motor penetrates through the connecting plate, and the output end of the second motor is fixedly connected to the positive and negative thread lead screw. The support rod is fixedly connected between the pair of connecting plates and passes through the threaded block.

[0013] Further, a second magnetic attraction plate is fixedly connected to the outer side of the second clamping rod. The second magnetic attraction plate and the threaded block attract each other with opposite polarities.

[0014] The technical effects and advantages of a knife shaft anti-winding rotary tiller of the present invention: (1) Through the structural design of the reciprocating mechanism, the first shearing knife, and the second shearing knife, the present invention realizes that the centrifugal force generated by the rotation of the knife roller causes weeds to gather between the shearing knives. The reciprocating mechanism drives the first shearing knife and the second shearing knife to swing by using the power source of the knife roller, effectively cutting and removing weeds, avoiding the winding phenomenon, and ensuring the smooth rotation of the knife roller. This design demonstrates significant anti-winding effects and the advantages of operation automation.

[0015] (2) Through the structural design of the power mechanism and the filter cylinder, the present invention realizes that the power mechanism drives the square block to move horizontally back and forth, uses the piston plate to squeeze air and blow it onto the surface of the knife roller through the filter barrel, effectively blowing away weeds, preventing winding, and improving the operation efficiency and stability of the rotary tiller.

[0016] (3) Through the switching design of adding the second clamping rod and the second hole groove, the present invention realizes the dual backup of the power mechanism, ensuring that when the power mechanism fails, it can still drive the square block to move through the cooperation of the driving mechanism and the threaded block, provide power for the piston plate, and continuously blow air to the knife roller, effectively avoiding the interruption of air blowing caused by problems with the power mechanism and improving the reliability and stability of the rotary tiller. Description of the Drawings

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 It is a schematic diagram of the first connecting rod and the knife roller in the present invention.

[0019] Figure 3 It is a schematic diagram of the partial structure of the present invention.

[0020] Figure 4Schematic diagram of the synchronization rod structure in the present invention.

[0021] Figure 5 In the present invention Figure 4 Schematic diagram of the enlarged structure at position A.

[0022] Figure 6 Schematic diagram of the structures of the first shearing knife and the second shearing knife in the present invention.

[0023] Figure 7 Schematic diagram of the filter barrel structure in the present invention.

[0024] Figure 8 Schematic diagram of the pressure pipe structure in the present invention.

[0025] Figure 9 Schematic diagram of the structures of the guiding inclined block and the second guiding rod in the present invention.

[0026] Figure 10 Explosion schematic diagram of the first clamping rod and the first magnetic attraction plate in the present invention.

[0027] Figure 11 Schematic diagram of the structure of the left - hand and right - hand threaded lead screw in the present invention.

[0028] Figure 12 Explosion schematic diagram of the second clamping rod and the second magnetic attraction plate in the present invention.

[0029] In the figure: 1. Frame; 2. First connecting rod; 3. Knife roller; 4. First spur gear; 5. Second spur gear; 6. Third spur gear; 7. Second connecting rod; 8. First shearing knife; 9. Second shearing knife; 10. Fixed rod; 11. Fixed block; 12. Guide groove; 13. First guide rod; 14. Concave plate; 15. Fourth spur gear; 16. Transmission rod; 17. Side plate; 18. Turntable; 19. Pressing rod; 20. Ring plate; 21. Square rod; 22. First limiting square ring; 23. Synchronization rod; 24. Filter barrel; 25. Air transmission pipe; 26. Pressure pipe; 27. Top plate; 28. Limiting rod; 29. Reciprocating block; 30. Square block; 31. Piston rod; 32. Piston plate; 33. Guiding inclined block; 34. Second guide rod; 35. Cross bar; 36. Second limiting square ring; 37. Cross plate; 38. First clamping rod; 39. First hole groove; 40. First magnetic attraction plate; 41. Second hole groove; 42. Threaded block; 43. Second clamping rod; 44. Left - hand and right - hand threaded lead screw; 45. Connecting plate; 46. Second motor; 47. Support rod; 48. Second magnetic attraction plate; 55. Fifth spur gear. Detailed implementation manners

[0030] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0031] Please refer to Figure 1 - Figure 6 As shown in the figure, a rotary tiller with an anti-winding cutter shaft includes a frame 1. A first connecting rod 2 is rotatably connected inside the frame 1. Three cutter rollers 3 are fixedly connected to the outside of the first connecting rod 2. First spur gears 4 are fixedly connected to both ends of the first connecting rod 2. Second spur gears 5 are meshed with the outside of the first spur gears 4. The second spur gears 5 are rotatably connected to the outside of the frame 1. Third spur gears 6 are meshed with the outside of the second spur gears 5. A second connecting rod 7 is fixedly connected inside the third spur gears 6. A motor is installed at one end of the second connecting rod 7. It further includes: A first shearing knife 8 and a second shearing knife 9. There are three groups of the first shearing knife 8 and the second shearing knife 9. All three groups of the first shearing knife 8 and the second shearing knife 9 are arranged inside the frame 1. Fixing rods 10 are fixedly connected to the outside of the first shearing knife 8 and the second shearing knife 9. One end of the fixing rod 10 away from the first shearing knife 8 is rotatably connected to a fixing block 11. The fixing block 11 is fixedly connected to the top of the frame 1. Guide grooves 12 are respectively formed inside the first shearing knife 8 and the second shearing knife 9. Guide rods 13 are slidably connected inside the guide grooves 12. A concave plate 14 is fixedly connected to one end of the guide rod 13. A reciprocating mechanism for driving the concave plate 14 to move up and down is arranged on the outside of the second connecting rod 7.

[0032] The motor drives the second connecting rod 7 to rotate. When the second connecting rod 7 rotates, it will synchronously drive the first spur gear 4 to rotate through the third spur gear 6 and the second spur gear 5. When the first spur gear 4 rotates, it will drive the three groups of cutter rollers 3 to rotate. When the cutter rollers 3 contact the soil, the soil clods are cut off and thrown backward, hitting the frame 1 and being crushed and then falling to the ground. The surface of the cultivated land is flat and soft, which can meet the requirements of intensive cultivation. However, in the actual use process, the cutter rollers 3 of the rotary tiller often encounter entanglement problems. This is mainly because weeds, root stubbles and soil clods in the soil are easily entangled between the multiple groups of cutter rollers 3 during the rotation of the cutter rollers 3, resulting in the obstruction of the rotation of the cutter rollers 3, and then affecting the operation efficiency and operation quality of the rotary tiller. When the embodiment of the present invention is used, when the motor drives the second connecting rod 7 to rotate, the second connecting rod 7 will synchronously drive the reciprocating mechanism to operate. At this time, the reciprocating mechanism will drive the concave plate 14 to move downward first. When the concave plate 14 moves downward, the concave plate 14 will squeeze the guide grooves 12 opened inside the first shear knife 8 and the second shear knife 9 through the first guide rod 13. When the guide grooves 12 are stressed, they will drive the first shear knife 8 and the second shear knife 9 to swing along the fixed rod 10. When multiple groups of cutter rollers 3 are entangled with weeds, due to the rotation direction of the cutter rollers 3 being Figure 3 counterclockwise when viewed from a certain perspective, and the length of the first shear knife 8 is greater than the length of the second shear knife 9. Therefore, the centrifugal force generated by the rotation of the cutter rollers 3 will cause the weeds to hit the first shear knife 8 and be between the first shear knife 8 and the second shear knife 9. When the first shear knife 8 and the second shear knife 9 swing, a shearing force will be generated when they come into contact, so as to cut off the weeds, thus avoiding the entanglement of the weeds on the outer side of the cutter rollers 3 and achieving the anti-entanglement function. As the reciprocating mechanism continues to operate, the reciprocating mechanism will drive the concave plate 14 to move upward. When the concave plate 14 moves upward, it will squeeze the guide grooves 12 again through the first guide rod 13, so that the first shear knife 8 and the second shear knife 9 swing in the reverse direction and reset. Under the action of the reciprocating mechanism, the first shear knife 8 and the second shear knife 9 intermittently generate a shearing force, so as to intermittently shear and clean the weeds entangled on the outer side of the cutter rollers 3.

[0033] Such as Figure 4 , Figure 5 and Figure 6As shown, the reciprocating mechanism includes spur gear five 55, spur gear four 15, transmission rod 16, side plate 17, turntable 18, pressure rod 19, three sets of ring plates 20, square rod 21, limit square ring one 22 and synchronizing rod 23. The spur gear five 55 is fixedly connected to the outside of connecting rod two 7. The spur gear four 15 meshes with the spur gear five 55. The transmission rod 16 is fixedly connected to the inside of the spur gear four 15. One end of the transmission rod 16 is rotatably connected to the side plate 17. The side plate 17 is fixedly connected to the top of the frame 1. The turntable 18 is fixedly connected to the end of the transmission rod 16 away from the side plate 17. The pressure rod 19 is fixedly connected to the end of the turntable 18 facing away from the spur gear four 15. The ring plate 20 is sleeved on the outside of the pressure rod 19. The three sets of ring plates 20 are respectively arranged above the three sets of concave plates 14. The square rod 21 is fixedly connected to the bottom end of the ring plate 20. The bottom end of the square rod 21 is fixedly connected to the concave plate 14. The limit square ring one 22 is slidably connected to the outside of the square rod 21. One end of the limit square ring one 22 away from the square rod 21 is fixedly connected to the top of the frame 1. The synchronizing rod 23 is fixedly connected to the outside of the three sets of ring plates 20 respectively.

[0034] When the connecting rod two 7 rotates, it will drive the spur gear five 55 to rotate. The rotation of the spur gear five 55 will drive the transmission rod 16 to rotate through the spur gear four 15. At this time, the transmission rod 16 can drive the turntable 18 to rotate. As the turntable 18 rotates, the turntable 18 will drive the pressure rod 19 to make continuous circular motion. When the pressure rod 19 moves, it will squeeze the ring plate 20, causing the ring plate 20 to move up and down reciprocally. The reciprocating movement of the ring plate 20 can drive the concave plate 14 to move up and down reciprocally through the square rod 21. The limit square ring one 22 can play a role in limiting the movement of the square rod 21, making the square rod 21 can only move up and down, ensuring the stability of the square rod 21. The setting of the synchronizing rod 23 can ensure that when one set of ring plates 20 moves down, it can drive the other two sets of ring plates 20 to move down synchronously, so that the three sets of shear knives one 8 and shear knives two 9 can all operate synchronously.

[0035] As Figure 7 - Figure 10 As shown, four filter barrels 24 are fixedly connected inside the frame 1. The top ends of the four filter barrels 24 are all fixedly connected with air delivery pipes 25. One end of the air delivery pipe 25 away from the filter barrel 24 is fixedly connected with a pressure pipe 26. The pressure pipe 26 is fixedly connected to the top of the frame 1. Two pairs of top plates 27 are fixedly connected to the top of the frame 1. A pair of limit rods 28 are fixedly connected between the two pairs of top plates 27. A reciprocating block 29 is slidably connected to the outside of the pair of limit rods 28. The top end of the reciprocating block 29 is fixedly connected with a square block 30. Piston rods 31 are fixedly connected to both ends of the square block 30. One end of the piston rod 31 away from the square block 30 is fixedly connected with a piston plate 32. The piston plate 32 is adapted to the inner wall size of the pressure pipe 26. A power mechanism for driving the piston plate 32 to move horizontally and reciprocally is arranged on the outside of the connecting rod two 7.

[0036] In order to achieve the function of airflow blowing weeds away from the knife roller 3 and preventing entanglement, when the embodiment of the present invention is in use, the rotation of the connecting rod 27 will drive the power mechanism to operate. When the power mechanism is in operation, it will drive the block 30 to move back and forth horizontally. The reciprocating block 29 then moves stably along the outer side of a pair of limit rods 28, and the reciprocating movement of the block 30 will drive the piston plate 32 to move through the piston rod 31. As the pair of piston plates 32 are respectively located inside the pressure tube 26 and move toward the direction close to the air transfer tube 25, the piston plate 32 will squeeze the internal air of the pressure tube 26, so that the air is transmitted to the inside of the filter barrel 24 through the air transfer tube 25, and then blown to the surface of the knife roller 3 through the filter barrel 24, blowing away part of the weeds to avoid entanglement.

[0037] like Figure 9 and Figure 10 As shown, four groups of filter barrels 24 are fixedly connected to the inside of the frame 1, and the tops of the four groups of filter barrels 24 are fixedly connected to air transfer pipes 25. The end of the air transfer pipe 25 away from the filter barrel 24 is fixedly connected to a pressure pipe 26, and the pressure pipe 26 is fixedly connected to the top of the frame 1. Two pairs of top plates 27 are fixedly connected to the top of the frame 1, and a pair of limiting rods 28 are fixedly connected between the two pairs of top plates 27. The outer sides of a pair of limiting rods 28 are slidably connected with reciprocating blocks 29, and the tops of the reciprocating blocks 29 are fixedly connected with blocks 30. Both ends of the blocks 30 are fixedly connected with piston rods 31, and the end of the piston rod 31 away from the block 30 is fixedly connected with a piston plate 32, and the piston plate 32 is adapted to the inner wall of the pressure pipe 26, and the outer side of the connecting rod 27 is provided with a power mechanism for driving the piston plate 32 to move back and forth laterally.

[0038] The rotation of connecting rod 27 will drive the guide bevel 33 to make a circular motion with connecting rod 27 as the center point. When the guide bevel 33 is in operation, it will squeeze a group of guide rods 2 34. The force on guide rods 2 34 will drive the cross bar 35 to move. In the initial state, the clamping rod 1 38 penetrates the cross plate 37 and is located inside the hole groove 1 39. The movement of the cross plate 37 will drive the block 30 to move through the clamping rod 1 38, and then the piston rod 31 will squeeze the internal air of the pressure tube 26 to provide an air source for the filter barrel 24.

[0039] like Figure 9 and Figure 10 As shown, a magnetic plate 40 is fixedly connected to the outer side of the clamping rod 38, and the magnetic plate 40 is located below the horizontal plate 37. The magnetic plate 40 and the horizontal plate 37 are attracted to each other by opposite sexes.

[0040] When there is no need to squeeze the internal air of the pressure tube 26, the first clamping rod 38 can be pulled upward. At this time, the first magnetic attraction plate 40 fits against the cross plate 37, and there is mutual attraction between the first magnetic attraction plate 40 and the cross plate 37. Then, the cross plate 37 can adsorb the first magnetic attraction plate 40, thus preventing the first clamping rod 38 from falling naturally under the action of gravity. When it is necessary to squeeze the internal air of the pressure tube 26, only need to move the first clamping rod 38 downward. When the first clamping rod 38 is inside the first hole groove 39, the first magnetic attraction plate 40 is out of the magnetic attraction range of the cross plate 37, so that the first clamping rod 38 can be kept inside the first hole groove 39. When the cross plate 37 moves, it can drive the square block 30 to move through the first clamping rod 38, so that the piston plate 32 squeezes the internal air of the pressure tube 26.

[0041] As Figure 11 and Figure 12 shown, a second hole groove 41 is formed on the outer side of the square block 30, a threaded block 42 is arranged on the outer side of the square block 30, a second clamping rod 43 is slidably connected inside the threaded block 42, the second clamping rod 43 is adapted to the internal size of the second hole groove 41, and a driving mechanism for driving the threaded block 42 to reciprocate is arranged on the outer side of the threaded block 42.

[0042] In order to avoid the problem that the power mechanism fails and cannot blow air towards the cutter roller 3, when the embodiment of the present invention is in use, the first clamping rod 38 can be pulled upward first to make the first clamping rod 38 out of the first hole groove 39. Subsequently, taking the second clamping rod 43 Figure 12 as the perspective, insert it into the second hole groove 41. At this time, the driving mechanism can drive the threaded block 42 to reciprocate horizontally. When the threaded block 42 moves, it will drive the square block 30 to move through the second clamping rod 43, thereby providing a power source for the movement of the piston plate 32.

[0043] As Figure 11 and Figure 12 shown, the driving mechanism includes a positive and negative thread lead screw 44, a pair of connecting plates 45, a second motor 46 and a support rod 47. A slider is fixedly connected inside the threaded block 42, the positive and negative thread lead screw 44 is in threaded connection with the slider, both ends of the pair of connecting plates 45 are fixedly connected to the top of the frame 1, the two ends of the positive and negative thread lead screw 44 are respectively rotatably connected to the pair of connecting plates 45, the second motor 46 is installed on the outer side of the connecting plate 45, the output end of the second motor 46 penetrates through the connecting plate 45, and the output end of the second motor 46 is fixedly connected to the positive and negative thread lead screw 44. The support rod 47 is fixedly connected between the pair of connecting plates 45 and the support rod 47 penetrates through the threaded block 42.

[0044] ​When the second motor 46 operates, it drives the forward and reverse lead screw 44 to rotate. Since the forward and reverse lead screw 44 is threadedly connected to the slider inside the threaded block 42, when the forward and reverse lead screw 44 rotates, the forward and reverse lead screw 44 drives the slider to move, and the slider drives the threaded block 42 to move, enabling the threaded block 42 to reciprocate horizontally under the limit of the support rod 47.

[0045] As Figure 11 and Figure 12 shown, a second magnetic attraction plate 48 is fixedly connected to the outer side of the second clamping rod 43, and the second magnetic attraction plate 48 attracts the threaded block 42 with opposite polarity.

[0046] When the driving mechanism does not need to control the movement of the square block 30, only need to pull the second clamping rod 43 to move away from the square block 30. When the second clamping rod 43 disengages from the inside of the second hole groove 41 at this time, the second magnetic attraction plate 48 fits with the threaded block 42, and the threaded block 42 generates attraction to the second magnetic attraction plate 48, which can prevent the second clamping rod 43 from shaking. At this time, when the threaded block 42 moves, it cannot drive the square block 30 to move through the second clamping rod 43.

[0047] Working principle: When the motor drives the second connecting rod 7 to rotate, the second connecting rod 7 will synchronously drive the reciprocating mechanism to operate. At this time, the reciprocating mechanism will drive the concave plate 14 to move downward first. When the concave plate 14 moves downward, the concave plate 14 will squeeze the guide grooves 12 opened inside the first shearing knife 8 and the second shearing knife 9 through the first guide rod 13. When the guide grooves 12 are stressed, they will drive the first shearing knife 8 and the second shearing knife 9 to swing along the fixed rod 10. When multiple groups of cutter rollers 3 wind weeds, since the rotation direction of the cutter rollers 3 is counterclockwise from Figure 3 this perspective, and the length of the first shearing knife 8 is greater than the length of the second shearing knife 9. Therefore, the centrifugal force generated by the rotation of the weeds along with the cutter rollers 3 will cause the weeds to hit the first shearing knife 8 and be between the first shearing knife 8 and the second shearing knife 9. When the first shearing knife 8 and the second shearing knife 9 swing, a shearing force will be generated when they come into contact, thereby cutting the weeds, thus avoiding the weeds from winding around the outside of the cutter rollers 3 and achieving the anti-winding function. As the reciprocating mechanism continues to operate, the reciprocating mechanism will drive the concave plate 14 to move upward. When the concave plate 14 moves upward, it will squeeze the guide grooves 12 again through the first guide rod 13, causing the first shearing knife 8 and the second shearing knife 9 to swing in the reverse direction and reset. Under the action of the reciprocating mechanism, the first shearing knife 8 and the second shearing knife 9 intermittently generate a shearing force, thereby intermittently shearing and cleaning the weeds wound around the outside of the cutter rollers 3; When the connecting rod 2 7 rotates, it will drive the spur gear 5 55 to rotate. The rotation of the spur gear 5 55 will drive the transmission rod 16 to rotate through the spur gear 4 15. The transmission rod 16 can then drive the turntable 18 to rotate. As the turntable 18 rotates, the turntable 18 will drive the pressure rod 19 to continuously move in a circular motion. The pressure rod 19 will squeeze the ring plate 20 during the motion, so that the ring plate 20 will continuously move back and forth up and down. The reciprocating movement of the ring plate 20 can drive the concave plate 14 to reciprocate up and down through the square rod 21, and the limiting square ring 1 22 can limit the movement of the square rod 21, so that the square rod 21 can only move up and down, ensuring the stability of the square rod 21. The setting of the synchronization rod 23 can ensure that when one group of ring plates 20 moves down, it can drive the other two groups of ring plates 20 to move down synchronously, so that the three groups of shearing knives 1 8 and shearing knives 2 9 can all work synchronously. The rotation of the connecting rod 27 will drive the power mechanism to operate. When the power mechanism is in operation, it will drive the block 30 to move back and forth horizontally. The reciprocating block 29 will move stably along the outer side of the pair of limit rods 28 at this time, and the reciprocating movement of the block 30 will drive the piston plate 32 to move through the piston rod 31. As the pair of piston plates 32 are respectively located inside the pressure tube 26 and move toward the direction close to the air transfer tube 25, the piston plate 32 will squeeze the internal air of the pressure tube 26, so that the air is transmitted to the inside of the filter barrel 24 through the air transfer tube 25, and then blown to the surface of the knife roller 3 through the filter barrel 24, blowing away some of the weeds to avoid entanglement; The rotation of the connecting rod 27 drives the guide bevel block 33 to make a circular motion with the connecting rod 27 as the center point. When the guide bevel block 33 is in motion, it will squeeze a group of guide rods 24. The guide rods 24 will be forced to move the cross bar 35. In the initial state, the clamping rod 1 38 penetrates the cross plate 37 and is located inside the hole groove 1 39. The movement of the cross plate 37 will drive the block 30 to move through the clamping rod 1 38, so that the piston rod 31 squeezes the internal air of the pressure tube 26 to provide an air source for the filter barrel 24. When there is no need to squeeze the internal air of the pressure tube 26, the clamping rod 38 can be pulled up. At this time, the magnetic plate 40 and the horizontal plate 37 are in contact with each other, and the magnetic plate 40 and the horizontal plate 37 attract each other. The horizontal plate 37 can adsorb the magnetic plate 40, thereby preventing the clamping rod 38 from falling naturally under the action of gravity. When it is necessary to squeeze the internal air of the pressure tube 26, it is only necessary to move the clamping rod 38 downward. When the clamping rod 38 is inside the hole groove 39, the magnetic plate 40 is separated from the magnetic attraction range of the horizontal plate 37, so that the clamping rod 38 can be kept inside the hole groove 39. When the horizontal plate 37 moves, the block 30 can be driven to move through the clamping rod 38, so that the piston plate 32 squeezes the internal air of the pressure tube 26. First, pull the clamping rod 1 38 upward to make it out of the hole 1 39, then pull the clamping rod 2 43 Figure 12Taking [perspective] as the view, insert it into the interior of the second hole groove 41. At this time, the driving mechanism can drive the threaded block 42 to move horizontally back and forth. When the threaded block 42 moves, it will drive the square block 30 to move through the second clamping rod 43, thereby providing a power source for the movement of the piston plate 32; When the second motor 46 operates, it will drive the left - right hand threaded lead screw 44 to rotate. Since the left - right hand threaded lead screw 44 is threadedly connected to the slider inside the threaded block 42, when the left - right hand threaded lead screw 44 rotates, the left - right hand threaded lead screw 44 will drive the slider to move, and the slider will drive the threaded block 42 to move, enabling the threaded block 42 to move horizontally back and forth under the limit of the support rod 47; When there is no need for the driving mechanism to control the movement of the square block 30, only need to pull the second clamping rod 43 in the direction away from the square block 30. When the second clamping rod 43 disengages from the interior of the second hole groove 41 at this time, the second magnetic attraction plate 48 fits with the threaded block 42, and the threaded block 42 generates an attraction to the second magnetic attraction plate 48, which can prevent the second clamping rod 43 from shaking. At this time, when the threaded block 42 moves, it cannot drive the square block 30 to move through the second clamping rod 43.

[0048] The above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present application can easily think of changes or substitutions, which should all be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claimed rights.

Claims

1. A knife shaft anti-winding rotary tiller, comprising a frame (1), the frame (1) is internally rotatably connected to a connecting rod 1 (2), the outer side of the connecting rod 1 (2) is fixedly connected to three sets of knife rollers (3), both ends of the connecting rod 1 (2) are fixedly connected to a spur gear 1 (4), the outer side of the spur gear 1 (4) is meshed with a spur gear 2 (5), the spur gear 2 (5) is rotatably connected to the outer side of the frame (1), the outer side of the spur gear 2 (5) is meshed with a spur gear 3 (6), the interior of the spur gear 3 (6) is fixedly connected to a connecting rod 2 (7), one end of the connecting rod 2 (7) is equipped with a motor, characterized in that: Also includes: Shear blade one (8) and shear blade two (9), three groups of shear blade one (8) and shear blade two (9) are provided, the three groups of shear blade one (8) and shear blade two (9) are all arranged inside the frame (1), the outer sides of the shear blade one (8) and shear blade two (9) are fixedly connected with a fixing rod (10), one end of the fixing rod (10) away from the shear blade one (8) is rotatably connected with a fixing block (11), and the fixing block (11) is fixedly connected to the top of the frame (1); A guide groove (12) is provided inside the shear blade 1 (8) and the shear blade 2 (9) respectively. A guide rod 1 (13) is slidably connected inside the guide groove (12). A concave plate (14) is fixedly connected to one end of the guide rod 1 (13). A reciprocating mechanism for driving the concave plate (14) to move up and down is provided on the outer side of the connecting rod 2 (7).

2. The rotary tiller with anti-winding blade shaft according to claim 1, characterized in that: The reciprocating mechanism comprises a spur gear five (55), a spur gear four (15), a transmission rod (16), a side plate (17), a rotating disk (18), a pressure rod (19), three sets of ring plates (20), a square rod (21), a limiting square ring one (22) and a synchronous rod (23), wherein the spur gear five (55) is fixedly connected to the outer side of the connecting rod two (7), the spur gear four (15) is meshed with the spur gear five (55), the transmission rod (16) is fixedly connected to the inside of the spur gear four (15), one end of the transmission rod (16) is rotatably connected to the side plate (17), the side plate (17) is fixedly connected to the top of the frame (1), and the rotating disk (18) is fixedly connected to the transmission rod (16). The pressure rod (19) is fixedly connected to one end of the revolving disc (18) away from the spur gear four (15), the ring plate (20) is sleeved on the outer side of the pressure rod (19), and the three groups of the ring plates (20) are respectively arranged above the three groups of concave plates (14). The square rod (21) is fixedly connected to the bottom end of the ring plate (20), and the bottom end of the square rod (21) is fixedly connected to the concave plate (14). The limiting square ring (22) is slidably connected to the outer side of the square rod (21), and the end of the limiting square ring (22) away from the square rod (21) is fixedly connected to the top of the frame (1), and the synchronization rod (23) is respectively fixedly connected to the outer sides of the three groups of ring plates (20).

3. The rotary tiller with anti-winding blade shaft according to claim 2, characterized in that: Four groups of filter barrels (24) are fixedly connected inside the frame (1), and the top ends of the four groups of filter barrels (24) are fixedly connected to air transfer pipes (25). One end of the air transfer pipe (25) away from the filter barrels (24) is fixedly connected to a pressure pipe (26), and the pressure pipe (26) is fixedly connected to the top end of the frame (1). Two pairs of top plates (27) are fixedly connected to the top end of the frame (1), and a pair of limit rods (28) are fixedly connected between the two pairs of top plates (27). The pair of limit rods (28) ) is slidably connected to the outer side of the connecting rod (26), a reciprocating block (29) is fixedly connected to the top of the reciprocating block (29), piston rods (31) are fixedly connected to both ends of the block (30), and a piston plate (32) is fixedly connected to the end of the piston rod (31) away from the block (30), and the piston plate (32) is adapted to the size of the inner wall of the pressure tube (26), and a power mechanism for driving the piston plate (32) to move back and forth laterally is arranged on the outer side of the connecting rod (7).

4. The rotary tiller with anti-winding blade shaft according to claim 3, characterized in that: The power mechanism comprises a pair of guide inclined blocks (33), a pair of guide rods (34), a cross bar (35), a pair of limiting square rings (36), a cross plate (37), a clamping rod (38) and a hole groove (39), wherein the pair of guide inclined blocks (33) are fixedly connected to the outside of the connecting rod (7), the pair of guide rods (34) are respectively arranged on both sides of the guide inclined blocks (33), the cross bar (35) is fixedly connected to the top of the pair of guide rods (34), and the pair of The second limiting square rings (36) are respectively slidably connected to the outside of the cross bar (35); one end of the pair of limiting square rings (36) away from the cross bar (35) is fixedly connected to the top of the frame (1); the cross plate (37) is fixedly connected to the outside of the cross bar (35); the first clamping rod (38) is slidably connected to the inside of the cross plate (37); a hole groove (39) is opened at the top of the block (30); and the bottom end of the first clamping rod (38) is arranged inside the hole groove (39).

5. The rotary tiller with anti-winding blade shaft according to claim 4, characterized in that: A magnetic attraction plate 1 (40) is fixedly connected to the outer side of the clamping rod 1 (38), and the magnetic attraction plate 1 (40) is located below the horizontal plate (37). The magnetic attraction plate 1 (40) and the horizontal plate (37) attract each other with opposite polarities.

6. The rotary tiller with blade shaft anti-winding according to claim 5, characterized in that: A second hole groove (41) is formed on the outer side of the block (30), a threaded block (42) is arranged on the outer side of the block (30), a second clamping rod (43) is slidably connected to the inside of the threaded block (42), the second clamping rod (43) is adapted to the inner size of the second hole groove (41), and a driving mechanism for driving the threaded block (42) to reciprocate is arranged on the outer side of the threaded block (42).

7. The rotary tiller with anti-winding blade shaft according to claim 6, characterized in that: The driving mechanism comprises a positive and negative threaded rod (44), a pair of connecting plates (45), a second motor (46) and a support rod (47); a slider is fixedly connected to the inside of the threaded block (42); the positive and negative threaded rod (44) is threadedly connected to the slider; the pair of connecting plates (45) are fixedly connected to the top of the frame (1); the two ends of the positive and negative threaded rod (44) are respectively rotatably connected to the pair of connecting plates (45); the second motor (46) is installed on the outside of the connecting plate (45); the output end of the second motor (46) passes through the connecting plate (45); the output end of the second motor (46) is fixedly connected to the positive and negative threaded rod (44); the support rod (47) is fixedly connected between the pair of connecting plates (45), and the support rod (47) passes through the threaded block (42).

8. The rotary tiller with anti-winding blade shaft according to claim 7, characterized in that: A second magnetic attraction plate (48) is fixedly connected to the outer side of the second clamping rod (43), and the second magnetic attraction plate (48) and the threaded block (42) are attracted to each other by opposite sexes.

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