A three-fold rotary cultivator

Abstract

This invention discloses a three-fold rotary tiller, relating to the field of agricultural machinery technology. It includes a rotary tiller with a first folding section and a second folding section respectively on both sides. A rotating mechanism, a lifting mechanism, and a supporting mechanism are provided on the top of the rotary tiller. The lifting mechanism includes two third fixing plates fixedly connected to both sides of the rotary tiller, with limit rods fixedly connected to the top of each of the two third fixing plates. This invention, by setting a rotating mechanism, drives the first and second folding sections to rotate, thereby folding them. This significantly reduces the width of the entire machine after folding, facilitating transportation and reducing component wear. It also allows for flexible switching between single-side operation modes, improving the efficiency of tilling narrow plots. Furthermore, it can automatically lock and open the first and second folding sections, improving work efficiency and reducing structural complexity, thus enhancing the overall practicality of the device.

Description

Technical Field

[0001] This invention relates to the field of agricultural machinery technology, specifically a three-fold rotary tiller. Background Technology

[0002] A rotary tiller is a power-driven tillage machine that uses rotating blades to process soil. It can be used with a tractor to perform tillage, harrowing, and other operations. It can chop up stubble buried below the surface, breaking up the plow pan, restoring soil structure, and improving soil water retention. It can also eliminate some weeds, reduce pests and diseases, level the surface, and improve the standard of agricultural mechanization. However, most rotary tillers lack a folding structure and have a fixed width, making transportation and transfer extremely inconvenient in narrow field paths and passages. This makes it difficult to handle oversized loads and limits their movement in complex terrain. Furthermore, most rotary tillers cannot flexibly adjust their working width to suit different field sizes, shapes, and operational needs, resulting in low efficiency in small or irregularly shaped fields. Therefore, specialized equipment is needed to improve their performance.

[0003] Existing three-fold rotary tillers can only support simultaneous folding or unfolding of both sides during operation, and cannot achieve independent control. This structural defect means that when working on fields of a certain width, even if only one side needs to be operated, both sides must be folded simultaneously for repeated tilling, which requires at least two tilling cycles. This not only significantly reduces work efficiency but also increases fuel consumption and equipment wear. To address these issues, we have designed a three-fold rotary tiller. Summary of the Invention

[0004] The purpose of this invention is to provide a three-fold rotary tiller that solves the problem that existing three-fold rotary tillers only support folding or unfolding on both sides at the same time during operation, which requires at least two tillage cycles when working on fields of a certain width. This not only greatly reduces work efficiency but also increases fuel consumption and equipment wear.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a three-fold rotary tiller, comprising: a rotary tiller, wherein a first folding part and a second folding part are respectively provided on both sides of the rotary tiller, and a rotating mechanism, a lifting mechanism and a supporting mechanism are provided on the top of the rotary tiller; the lifting mechanism includes two third fixing plates fixedly connected to both sides of the rotary tiller, a limit rod fixedly connected to the top of each of the two third fixing plates, a second rectangular plate fixedly connected to the outer wall of the limit rod, a fourth fixing plate fixedly connected to the top of the limit rod, a second sliding plate slidably connected to the outer wall of the limit rod, a first sliding plate fixedly connected to one end of the second sliding plate, and a moving plate slidably connected to the inner side of the first sliding plate.

[0006] As a further embodiment of the present invention: the rotating mechanism includes four sets of first fixed seats fixedly connected to the top of the rotary tiller and the top of the moving plate. Each set of first fixed seats has two seats. Each first fixed seat has a sliding groove on its inner side. A moving rod is slidably connected to the inner side of the sliding groove of each pair of first fixed seats. A hydraulic cylinder is fixedly connected to the outer wall of the moving rod. Two sets of first fixed plates are fixedly connected to the top of the rotary tiller and the top of the moving plate. Each set of first fixed plates has two plates. A first rotating shaft is rotatably connected to the inner side of the two first fixed plates. The outer wall of the first rotating shaft is fixedly connected to the moving plate. A first arc-shaped plate is connected to the top of the first folded part and the second folded part. Two sets of second fixing plates are fixedly connected to the top of each set of two second fixing plates. A third rotating shaft is rotatably connected to the inner side of each set of two second fixing plates. The first fixing plate is rotatably connected to the outer wall of the third rotating shaft. A second rotating shaft is rotatably connected to the inner side of each set of two second fixing plates. Two second arc-shaped plates are fixedly connected to the outer wall of the second rotating shaft. A rotating column is rotatably connected to the inner side of the two second arc-shaped plates. The first arc-shaped plate is rotatably connected to the outer wall of the rotating column. The rotating column is fixedly connected to the output end of the hydraulic cylinder.

[0007] As a further embodiment of the present invention: the rotating mechanism further includes four first rectangular plates fixedly connected to the bottom of the rotary tiller; two locking blocks are fixedly connected to the bottom of both the first folding part and the second folding part; a first connecting plate is fixedly connected to one side of the hydraulic cylinder by a bolt assembly; a fixing groove is provided on one side of the first connecting plate; a connecting rod is fixedly connected to the inner side of the fixing groove by a bolt assembly; a fifth rotating shaft is rotatably connected to the inner side of the first rectangular plate; a locking plate is fixedly connected to the outer wall of the fifth rotating shaft; a fourth rotating shaft is rotatably connected to the inner side of the locking plate; and the connecting rod is rotatably connected to the outer wall of the fourth rotating shaft; a locking groove is provided on the inner side of the locking block.

[0008] As a further embodiment of the present invention: the lifting mechanism further includes a one-way threaded screw rotatably connected to the inner sides of the third fixed plate and the fourth fixed plate, and the second sliding plate is threadedly connected to the outer wall of the one-way threaded screw. A drive motor is installed on the top of the fourth fixed plate, and the output end of the drive motor extends through to the bottom of the fourth fixed plate and is fixedly connected to the one-way threaded screw. A synchronous rotation assembly is provided at the bottom of the fourth fixed plate.

[0009] As a further embodiment of the present invention: the synchronous rotation assembly includes two first spur gears fixedly connected to the outer walls of the two unidirectional threaded screws, a chain is installed on the outer walls of the two first spur gears, and a lateral movement assembly is provided on one side of the second sliding plate.

[0010] As a further embodiment of the present invention: the lateral movement component includes a first spur rack fixedly connected to one side of the rotary tiller, a second spur rack fixedly connected to one side of the moving plate, a first rotating rod rotatably connected to one side of the first sliding plate, a second spur gear fixedly connected to one end of the first rotating rod, and the second spur gear meshing with the first spur rack and the second spur rack respectively.

[0011] As a further embodiment of the present invention: the support mechanism includes a first rectangular groove formed inside the second sliding plate, two second fixed seats fixedly connected to the inner side of the first rectangular groove, a second rotating rod rotatably connected between the two second fixed seats, a circular plate fixedly connected to one side of the second fixed seat through the second rotating rod, a torsion spring installed between the circular plate and the second fixed seat, a first rotating plate fixedly connected to the outer wall of the second rotating rod, a second rectangular groove formed inside the third fixed plate, a third sliding plate slidably connected to the inner side of the second rectangular groove, two second connecting plates fixedly connected to the top of the third sliding plate, a fourth rotating rod rotatably connected to the inner side of each of the two second connecting plates, and the fourth rotating rod passing through the outer side of the second connecting plate and fixedly connected to the first rotating plate.

[0012] As a further embodiment of the present invention: the support mechanism further includes a connecting groove formed inside the first rotating plate, a third rotating rod sleeved inside the connecting groove, a second rotating plate fixedly connected to the outer wall of the third rotating rod, a fourth sliding plate slidably connected to the inner side of the second rotating plate, a compression spring installed between one end of the fourth sliding plate and the inner side of the second rotating plate, a third rectangular groove communicating with the first rectangular groove formed inside the second sliding plate, a sliding block slidably connected to the inner side of the third rectangular groove, two third connecting plates fixedly connected to the bottom of the sliding block, a fifth rotating rod rotatably connected to the inner side of the two third connecting plates, the fifth rotating rod penetrating to the outer wall of the two third connecting plates and fixedly connected to the third rotating plate, and the fourth sliding plate slidably connected to the inner side of the third rotating plate.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. By setting a rotating mechanism, the second fixed plate is driven to rotate, which in turn drives the first folding part and the second folding part to rotate, thereby folding the first folding part and the second folding part. This greatly reduces the width of the whole machine after folding, making it easier to transport and reducing component wear. At the same time, it can flexibly switch to a single-sided operation mode to improve the efficiency of cultivating narrow plots. It can also automatically lock and open the first folding part and the second folding part, improving work efficiency, reducing structural redundancy, and thus improving the overall practicality of the device.

[0015] 2. By setting up a lifting mechanism, the second spur gear is driven to rotate, thereby driving the second spur rack to move towards the limiting rod, which in turn drives the first folding part to move towards the limiting rod. This changes the overall center of gravity of the rotary tiller, so that after the second folding part on one side of the rotary tiller is unfolded, the position of the first folding part after folding can be adjusted to the center position of the rotary tiller and the second folding part combined. This keeps the center of gravity of the rotary tiller in the central area, reducing the left and right swaying or "nodding" phenomenon caused by vibration, improving the stability of operation. At the same time, after the center of gravity is centered, the force on the drive shaft and other parts on the inner side of the rotary tiller is more balanced, avoiding the overload wear of one-sided parts caused by the traditional center of gravity offset, thereby improving the overall practicality of the device.

[0016] 3. By setting up a support mechanism, the second rotating plate is driven to rotate, and at the same time, the fourth sliding plate is pushed to move laterally under the action of the compression spring. This causes the sliding block to move laterally, so that after the second sliding plate moves to a certain height, the first rotating plate, the second rotating plate, the fourth sliding plate and the third rotating plate can form a stable triangular support, which converts the shear force and tensile force in the plane into the axial pressure or tension of each rod, thereby improving the deformation resistance of the device. At the same time, when the rotary tiller rotates at high speed, the impact force of the blade will generate an upward lifting torque or lateral thrust. At this time, the triangular support structure distributes the torque to each support rod through rigid nodes, thereby improving the support effect on the first folding part, thus improving the overall practicality of the device. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention;

[0018] Figure 2 This is a schematic diagram of the folding process of the present invention;

[0019] Figure 3 This is a schematic diagram of the single-sided folding of the present invention;

[0020] Figure 4 This is a schematic diagram of the rotating mechanism structure of the present invention;

[0021] Figure 5 This is a partial structural diagram of the rotating mechanism of the present invention;

[0022] Figure 6 This is a schematic diagram of the lifting mechanism structure of the present invention;

[0023] Figure 7 For the present invention Figure 6 Enlarged view of point A in the middle;

[0024] Figure 8 This is a schematic diagram of the lateral movement component structure of the present invention;

[0025] Figure 9 This is a cross-sectional view of the support mechanism of the present invention;

[0026] Figure 10 This is an exploded view of the third fixed plate, the first rotating plate, and the second sliding plate of the present invention.

[0027] Figure 11 For the present invention Figure 10 Enlarged view at point B in the middle;

[0028] Figure 12 This is a schematic diagram of the second rotating plate structure of the present invention;

[0029] Figure 13 This is an unfolded diagram of the support mechanism of the present invention;

[0030] Figure 14 This is a schematic diagram of the second fixing base structure of the present invention.

[0031] In the diagram: 1. Rotary tiller; 2. First folding section; 3. Second folding section; 4. Moving plate; 5. First fixed base; 6. Moving rod; 7. Hydraulic cylinder; 8. First fixed plate; 9. Second fixed plate; 10. First rotating shaft; 11. First arc-shaped plate; 12. Rotating column; 13. Second rotating shaft; 14. Third rotating shaft; 15. Second arc-shaped plate; 16. First connecting plate; 17. Connecting rod; 18. Fixed groove; 19. Fourth rotating shaft; 20. First rectangular plate; 21. Fifth rotating shaft; 22. Locking plate; 23. Locking block; 24. Locking groove; 25. First sliding plate; 26. Third fixed plate; 27. Limiting rod; 28. Second rectangular plate; 29. ​​Fourth fixed plate; 30. Second sliding plate; 31. Drive motor 32. One-way threaded screw; 33. Chain; 34. First spur gear; 35. First spur rack; 36. Second spur rack; 37. First rotating rod; 38. Second spur gear; 39. Second fixed seat; 40. Second rotating rod; 41. First rotating plate; 42. First rectangular groove; 43. Second rectangular groove; 44. Third sliding plate; 45. Third rotating rod; 46. Second rotating plate; 47. Fourth sliding plate; 48. Compression spring; 49. Second connecting plate; 50. Torsion spring; 51. Fourth rotating rod; 52. Connecting groove; 53. Third rotating plate; 54. Sliding block; 55. Third connecting plate; 56. Fifth rotating rod; 57. Third rectangular groove; 58. Circular plate; 59. Support plate; 60. Support bar. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this invention, it should be noted that unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," and "set up" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. The following describes embodiments of the invention based on its overall structure.

[0034] Please see Figures 1 to 14This embodiment provides a three-fold rotary tiller, including: a rotary tiller 1, with a first folding part 2 and a second folding part 3 respectively provided on both sides of the rotary tiller 1, and a rotating mechanism, a lifting mechanism and a supporting mechanism provided on the top of the rotary tiller 1; the rotating mechanism includes four sets of first fixed seats 5 fixedly connected to the top of the rotary tiller 1 and the top of the moving plate 4, each set of first fixed seats 5 having two seats, each first fixed seat 5 having a sliding groove on its inner side, and a moving rod 6 slidably connected to the inner side of the sliding groove of each set of two first fixed seats 5, the outer wall of the moving rod 6 being fixedly connected to the sliding groove of each set of two first fixed seats 5. A hydraulic cylinder 7 is fixedly connected to the top of the rotary tiller 1 and the top of the moving plate 4. Two sets of first fixed plates 8 are fixedly connected to the top of each set of first fixed plates 8, with two plates in each set. A first rotating shaft 10 is rotatably connected to the inner side of the two first fixed plates 8. A first arc-shaped plate 11 is fixedly connected to the outer wall of the first rotating shaft 10. Two sets of second fixed plates 9 are fixedly connected to the top of the first folding part 2 and the second folding part 3, with two plates in each set. A third rotating shaft 14 is rotatably connected to the inner side of each set of two second fixed plates 9. The first fixed plates 8 rotate... The rotating mechanism is rotatably connected to the outer wall of the third rotating shaft 14. The inner sides of each group of two second fixed plates 9 are rotatably connected to the second rotating shaft 13. Two second arc-shaped plates 15 are fixedly connected to the outer wall of the second rotating shaft 13. Rotating columns 12 are rotatably connected to the inner sides of the two second arc-shaped plates 15, and the first arc-shaped plate 11 is rotatably connected to the outer wall of the rotating column 12. The rotating column 12 is fixedly connected to the output end of the hydraulic cylinder 7. The rotating mechanism also includes four first rectangular plates 20 fixedly connected to the bottom of the rotary tiller 1. The bottoms of the first folding part 2 and the second folding part 3 are both fixedly connected to... Two locking blocks 23, a first connecting plate 16 is fixedly connected to one side of the hydraulic cylinder 7 by a bolt assembly, a fixing groove 18 is opened on one side of the first connecting plate 16, a connecting rod 17 is fixedly connected to the inner side of the fixing groove 18 by a bolt assembly, a fifth rotating shaft 21 is rotatably connected to the inner side of the first rectangular plate 20, a locking plate 22 is fixedly connected to the outer wall of the fifth rotating shaft 21, a fourth rotating shaft 19 is rotatably connected to the inner side of the locking plate 22, and the connecting rod 17 is rotatably connected to the outer wall of the fourth rotating shaft 19. A locking groove 24 is opened on the inner side of the locking block 23.

[0035] A support plate 59 is fixedly connected to the top of the rotary tiller 1. Four support bars 60 are fixed on both sides of the support plate 59. When the first folding part 2 and the second folding part 3 are folded to the top of the rotary tiller 1, the four support bars 60 can support the first folding part 2 and the second folding part, thereby improving the stability of the device.

[0036] Hydraulic cylinder 7 is controlled by a PLC controller, which can control its intermittent operation. When the operator needs to fold the rotary tiller 1, the PLC controller activates hydraulic cylinder 7. Since the first folding part 2 is locked, hydraulic cylinder 7 drives the moving rod 6 towards the first connecting plate 16 before retracting, thereby moving the first connecting plate 16 towards the locking block 23. This, in turn, moves the connecting rod 17 towards the locking block 23, driving the first rectangular plate 20 to rotate clockwise, thus releasing the limit on the locking block 23. At this time, the output end of hydraulic cylinder 7 drives the rotating column 12 towards the first... The first fixed base 5 moves in the direction of the first fixed base 5, thereby driving the second arc plate 15 to move towards the first fixed base 5, thereby driving the second fixed plate 9 to rotate, thereby driving the first folding part 2 and the second folding part 3 to rotate, thereby folding the first folding part 2 and the second folding part 3, thereby greatly reducing the width of the whole machine after folding, which facilitates transportation and reduces component wear. At the same time, it can flexibly switch to single-sided operation mode, improve the efficiency of cultivating narrow plots, and can automatically lock and open the first folding part 2 and the second folding part 3, improving work efficiency, reducing structural redundancy, and thus improving the overall practicality of the device.

[0037] When the above steps are performed, after the first fold 2 and the second fold 3 are unfolded, the output end of the hydraulic cylinder 7 continues to extend, thereby driving the tail end of the hydraulic cylinder 7 to move towards the first connecting plate 16 via the moving rod 6, thereby causing the locking block 23 to rotate towards the inside of the locking groove 24, locking the unfolded first fold 2 and the second fold 3, thereby improving the overall stability of the device.

[0038] Please see Figures 2-8The lifting mechanism includes two third fixed plates 26 fixedly connected to both sides of the rotary tiller 1. Limiting rods 27 are fixedly connected to the top of each of the two third fixed plates 26. A second rectangular plate 28 is fixedly connected to the outer wall of each limiting rod 27. A fourth fixed plate 29 is fixedly connected to the top of each limiting rod 27. A second sliding plate 30 is slidably connected to the outer wall of each limiting rod 27. A first sliding plate 25 is fixedly connected to one end of the second sliding plate 30. A moving plate 4 is slidably connected to the inner side of the first sliding plate 25. The lifting mechanism also includes a one-way threaded screw 32 rotatably connected to the inner sides of the third fixed plates 26 and the fourth fixed plates 29. The second sliding plate 30 is threadedly connected to the outer wall of the one-way threaded screw 32. A drive motor 31 is mounted on the top of one of the fourth fixed plates 29. The output end extends through to the bottom of the fourth fixed plate 29 and is fixedly connected to the one-way threaded screw 32. A synchronous rotation assembly is provided at the bottom of the fourth fixed plate 29. The synchronous rotation assembly includes two first spur gears 34 fixedly connected to the outer walls of the two one-way threaded screws 32. A chain 33 is installed on the outer walls of the two first spur gears 34. A lateral movement assembly is provided on one side of the second sliding plate 30. The lateral movement assembly includes a first rack 35 fixedly connected to one side of the rotary tiller 1. A second rack 36 is fixedly connected to one side of the moving plate 4. A first rotating rod 37 is rotatably connected to one side of the first sliding plate 25. A second spur gear 38 is fixedly connected to one end of the first rotating rod 37, and the second spur gear 38 meshes with the first rack 35 and the second rack 36 respectively.

[0039] Before folding the rotary tiller 1 on one side, the operator can use a screwdriver or other tools to unscrew the bolts on one side of the first connecting plate 16 and the support plate 59, thereby removing the first connecting plate 16, connecting rod 17, locking plate 22, support plate 59 and support bar 60, etc., to prevent interference when the first folding part 2 moves laterally.

[0040] The drive motor 31 is controlled by a PLC controller, which can control the intermittent start of the drive motor 31. When it is necessary to fold the rotary tiller 1 on one side, the PLC controller controls the two hydraulic cylinders 7 on the top of the moving plate 4 to start. When the first folding part 2 is folded to the folding position, the PLC controller controls the drive motor 31 to start, thereby driving the one-way threaded screw 32 to rotate, which in turn drives a first spur gear 34 to rotate, thereby driving the chain 33 to move, which in turn drives another one-way threaded screw 32 to rotate, thereby driving the two second sliding plates 30 to move upward, which in turn drives the two first sliding plates 25 to move upward, which in turn drives the first folding part 2 to move upward. When the first sliding plate 25 moves upward, the locking teeth on one side of the first sliding plate 25 and the first spur gear 3... When contact occurs, the second spur gear 38 is driven to rotate under the action of the first sliding plate 25, thereby driving the second spur rack 36 to move towards the limiting rod 27, which in turn drives the first folding part 2 to move towards the limiting rod 27. This changes the overall center of gravity of the rotary tiller 1, so that after the second folding part 3 on one side of the rotary tiller 1 is unfolded, the position of the first folding part 2 after being folded can be adjusted to the center position of the rotary tiller 1 and the second folding part 3 after combination. This keeps the center of gravity of the rotary tiller 1 in the central area, reducing the left and right swaying or "nodding" phenomenon caused by vibration, improving the stability of operation. At the same time, after the center of gravity is centered, the force on the drive shaft and other parts on the inner side of the rotary tiller 1 is more balanced, avoiding the overload wear of one-sided parts caused by the traditional center of gravity offset, thereby improving the overall practicality of the device.

[0041] Please see Figures 5 to 14The support mechanism includes a first rectangular groove 42 formed inside the second sliding plate 30. Two second fixed seats 39 are fixedly connected to the inner side of the first rectangular groove 42. A second rotating rod 40 is rotatably connected between the two second fixed seats 39. A circular plate 58 is fixedly connected to one side of the second fixed seat 39 through the second rotating rod 40. A torsion spring 50 is installed between the circular plate 58 and the second fixed seat 39. A first rotating plate 41 is fixedly connected to the outer wall of the second rotating rod 40. A second rectangular groove 43 is formed inside the third fixed plate 26. A third sliding plate 44 is slidably connected to the inner side of the second rectangular groove 43. Two second connecting plates 49 are fixedly connected to the top of the third sliding plate 44. A fourth rotating rod 51 is rotatably connected to the inner side of each of the two second connecting plates 49. The fourth rotating rod 51 passes through the outer side of the second connecting plate 49 and is fixedly connected to the first rotating plate 41. The support mechanism also includes a connecting groove 52 opened inside the first rotating plate 41. A third rotating rod 45 is sleeved inside the connecting groove 52. A second rotating plate 46 is fixedly connected to the outer wall of the third rotating rod 45. A fourth sliding plate 47 is slidably connected to the inner side of the second rotating plate 46. A compression spring 48 is installed between one end of the fourth sliding plate 47 and the inner side of the second rotating plate 46. A third rectangular groove 57 communicating with the first rectangular groove 42 is opened inside the second sliding plate 30. A sliding block 54 is slidably connected to the inner side of the third rectangular groove 57. Two third connecting plates 55 are fixedly connected to the bottom of the sliding block 54. A fifth rotating rod 56 is rotatably connected to the inner side of the two third connecting plates 55. The fifth rotating rod 56 passes through to the outer wall of the two third connecting plates 55 and is fixedly connected to a third rotating plate 53. The fourth sliding plate 47 is slidably connected to the inner side of the third rotating plate 53.

[0042] When the second sliding plate 30 moves upward, it drives the first rectangular groove 42 and the sliding block 54 to move upward. During this process, the first rotating plate 41 unfolds under the action of the torsion spring 50, thereby driving the second rotating plate 46 to rotate. At the same time, under the action of the compression spring 48, the fourth sliding plate 47 is pushed to move laterally, thereby driving the sliding block 54 to move laterally. After the second sliding plate 30 moves to a certain height, the first rotating plate 41, the second rotating plate 46, the fourth sliding plate 47 and the third rotating plate 53 can form a stable triangular support, converting the shear force and tensile force in the plane into the axial pressure or tension of each rod, thereby improving the deformation resistance of the device. At the same time, when the rotary tiller 1 rotates at high speed, the impact force of the blade will generate an upward lifting torque or lateral thrust. At this time, the triangular support structure distributes the torque to each support rod through the rigid node, thereby improving the support effect on the first folding part 2, thereby improving the overall practicality of the device.

[0043] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A three-fold rotary tiller, characterized in that, include: A rotary tiller (1) is provided with a first folding part (2) and a second folding part (3) on both sides of the rotary tiller (1), and a rotating mechanism, a lifting mechanism and a supporting mechanism are provided on the top of the rotary tiller (1). The lifting mechanism includes two third fixed plates (26) fixedly connected to both sides of the rotary tiller (1). The top of each of the two third fixed plates (26) is fixedly connected to a limit rod (27). The outer wall of the limit rod (27) is fixedly connected to a second rectangular plate (28). The top of the limit rod (27) is fixedly connected to a fourth fixed plate (29). The outer wall of the limit rod (27) is slidably connected to a second sliding plate (30). One end of the second sliding plate (30) is fixedly connected to a first sliding plate (25). The inner side of the first sliding plate (25) is slidably connected to a moving plate (4). The rotating mechanism includes four sets of first fixed seats (5) fixedly connected to the top of the rotary tiller (1) and the top of the moving plate (4). Each set of first fixed seats (5) has two seats. Each first fixed seat (5) has a sliding groove on its inner side. A moving rod (6) is slidably connected to the inner side of the sliding groove of each of the two first fixed seats (5). A hydraulic cylinder (7) is fixedly connected to the outer wall of the moving rod (6). Two sets of first fixed plates (8) are fixedly connected to the top of the rotary tiller (1) and the top of the moving plate (4). Each set of first fixed plates (8) has two plates. A first rotating shaft (10) is rotatably connected to the inner side of the two first fixed plates (8). A first arc plate (11) is fixedly connected to the outer wall of the first rotating shaft (10). Two sets of second fixing plates (9) are fixedly connected to the top of the first folding part (2) and the second folding part (3). Each set of second fixing plates (9) has two plates. The inner side of each set of two second fixing plates (9) is rotatably connected to a third rotating shaft (14). The first fixing plate (8) is rotatably connected to the outer wall of the third rotating shaft (14). The inner side of each set of two second fixing plates (9) is rotatably connected to a second rotating shaft (13). The outer wall of the second rotating shaft (13) is fixedly connected to two second arc-shaped plates (15). The inner side of the two second arc-shaped plates (15) is rotatably connected to a rotating column (12). The first arc-shaped plate (11) is rotatably connected to the outer wall of the rotating column (12). The rotating column (12) is fixedly connected to the output end of the hydraulic cylinder (7). The rotating mechanism also includes four first rectangular plates (20) fixedly connected to the bottom of the rotary tiller (1). The bottom of the first folding part (2) and the second folding part (3) are both fixedly connected to two locking blocks (23). One side of the hydraulic cylinder (7) is fixedly connected to a first connecting plate (16) by a bolt assembly. A fixing groove (18) is provided on one side of the first connecting plate (16). A connecting rod (17) is fixedly connected to the inner side of the fixing groove (18) by a bolt assembly. A fifth rotating shaft (21) is rotatably connected to the inner side of the first rectangular plate (20). A locking plate (22) is fixedly connected to the outer wall of the fifth rotating shaft (21). A fourth rotating shaft (19) is rotatably connected to the inner side of the locking plate (22). The connecting rod (17) is rotatably connected to the outer wall of the fourth rotating shaft (19). A locking groove (24) is provided on the inner side of the locking block (23).

2. A three-fold rotary tiller according to claim 1, characterized in that, The lifting mechanism further includes a one-way threaded screw (32) rotatably connected to the inner side of the third fixed plate (26) and the fourth fixed plate (29), and the second sliding plate (30) is threadedly connected to the outer wall of the one-way threaded screw (32). A drive motor (31) is installed on the top of the fourth fixed plate (29), and the output end of the drive motor (31) extends through to the bottom of the fourth fixed plate (29) and is fixedly connected to the one-way threaded screw (32). A synchronous rotation assembly is provided at the bottom of the fourth fixed plate (29).

3. A three-fold rotary tiller according to claim 2, characterized in that, The synchronous rotation assembly includes two first spur gears (34) fixedly connected to the outer walls of the two unidirectional threaded screws (32), a chain (33) is mounted on the outer walls of the two first spur gears (34), and a lateral movement assembly is provided on one side of the second sliding plate (30).

4. A three-fold rotary tiller according to claim 3, characterized in that, The lateral movement assembly includes a first rack (35) fixedly connected to one side of the rotary tiller (1), a second rack (36) fixedly connected to one side of the moving plate (4), a first rotating rod (37) rotatably connected to one side of the first sliding plate (25), a second spur gear (38) fixedly connected to one end of the first rotating rod (37), and the second spur gear (38) meshes with the first rack (35) and the second rack (36) respectively.

5. A three-fold rotary tiller according to claim 4, characterized in that, The support mechanism includes a first rectangular groove (42) opened inside the second sliding plate (30). Two second fixed seats (39) are fixedly connected to the inner side of the first rectangular groove (42). A second rotating rod (40) is rotatably connected between the two second fixed seats (39). A circular plate (58) is fixedly connected to one side of the second fixed seat (39) through the second rotating rod (40). A torsion spring (50) is installed between the circular plate (58) and the second fixed seat (39). A first rotating plate (41) is fixedly connected to the outer wall of the second rotating rod (40). A second rectangular groove (43) is opened inside the third fixed plate (26). A third sliding plate (44) is slidably connected to the inner side of the second rectangular groove (43). Two second connecting plates (49) are fixedly connected to the top of the third sliding plate (44). A fourth rotating rod (51) is rotatably connected to the inner side of each of the two second connecting plates (49). The fourth rotating rod (51) passes through the outer side of the second connecting plate (49) and is fixedly connected to the first rotating plate (41).

6. A three-fold rotary tiller according to claim 5, characterized in that, The support mechanism further includes a connecting groove (52) formed inside the first rotating plate (41). A third rotating rod (45) is sleeved inside the connecting groove (52). A second rotating plate (46) is fixedly connected to the outer wall of the third rotating rod (45). A fourth sliding plate (47) is slidably connected to the inner side of the second rotating plate (46). A compression spring (48) is installed between one end of the fourth sliding plate (47) and the inner side of the second rotating plate (46). The first rectangular spring is formed inside the second sliding plate (30). A third rectangular groove (57) is connected to the groove (42). A sliding block (54) is slidably connected to the inner side of the third rectangular groove (57). Two third connecting plates (55) are fixedly connected to the bottom of the sliding block (54). A fifth rotating rod (56) is rotatably connected to the inner side of the two third connecting plates (55). The fifth rotating rod (56) passes through the outer wall of the two third connecting plates (55) and is fixedly connected to a third rotating plate (53). A fourth sliding plate (47) is slidably connected to the inner side of the third rotating plate (53).

Images