Triple-folding rotary cultivator

Abstract

The invention discloses a triple-folding rotary cultivator, and relates to the technical field of agricultural machinery, the triple-folding rotary cultivator comprises a rotary cultivator, the two sides of the rotary cultivator are respectively provided with a first folding part and a second folding part, and the top of the rotary cultivator is provided with a rotating mechanism, a lifting mechanism and a supporting mechanism; the lifting mechanism comprises two third fixing plates fixedly connected to the two sides of the rotary cultivator, and the tops of the two third fixing plates are fixedly connected with limiting rods. By arranging the rotating mechanism, the first folding part and the second folding part are driven to rotate, so that the first folding part and the second folding part are folded, the width of the folded whole machine is greatly reduced, transportation is facilitated, part loss is reduced, meanwhile, a single-side operation mode can be flexibly switched, and the cultivation efficiency of narrow land parcels is improved; and meanwhile, the first folding part and the second folding part can be automatically locked and unlocked, so that the working efficiency is improved, the structural miscellaneous degree is reduced, and the overall practicability of the device is improved.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural machinery, in particular to a three-folding rotary tiller. Background Art

[0002] A rotary tiller is a power-driven tillage machine that uses rotating blades as working parts to process the soil. It can be used in conjunction with a tractor to complete plowing, raking, and other operations. It can shred root stubble buried below the surface, breaking up the plow bottom layer, restoring the soil's plow layer structure, and improving the soil's ability to retain water and moisture. It can also eliminate some weeds, reduce pests and diseases, level the surface, and improve agricultural mechanization standards. However, most rotary tillers lack a folding structure and have a fixed width. This makes transport and transfer extremely inconvenient when encountering field paths and narrow passages, and it's difficult to solve the problem of over-width transportation and mounting, limiting their mobility in complex terrain. Furthermore, most rotary tillers cannot flexibly adjust their operating width, making it difficult to adapt to different field sizes, shapes, and operational requirements. Their efficiency is low when operating in small or irregular fields, necessitating specialized equipment for improvement.

[0003] Existing three-fold rotary tillers only support simultaneous folding or unfolding of both sides during operation and cannot be independently controlled. This structural defect means that when working on a field of a specific width, even if only one side needs to be operated, both sides must be folded simultaneously and repeated tillage must be performed, requiring at least two tillage cycles. This not only significantly reduces operating efficiency but also increases fuel consumption and equipment wear. To this end, we designed a three-fold rotary tiller to solve the above problems. Summary of the Invention

[0004] The purpose of the present invention is to provide a three-fold rotary tiller to solve the problem that the existing three-fold rotary tiller only supports simultaneous folding or unfolding of both sides during operation, so that when operating on a field of a specific width, at least two tillage cycles are required, which not only greatly reduces the operating efficiency but also increases fuel consumption and equipment wear.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a three-fold rotary tiller, comprising: a rotary tiller, 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 comprises two third fixed plates fixedly connected to both sides of the rotary tiller, the tops of the two third fixed plates are fixedly connected to a limiting rod, the outer wall of the limiting rod is fixedly connected to the second rectangular plate, the top of the limiting rod is fixedly connected to the fourth fixed plate, the outer wall of the limiting rod is slidably connected to the second sliding plate, one end of the second sliding plate is fixedly connected to the first sliding plate, and the inner side of the first sliding plate is slidably connected to the movable plate.

[0006] As a further solution of the present invention: the rotating mechanism includes four groups of first fixed seats fixedly connected to the top of the rotary tiller and the top of the movable plate, each group of the first fixed seats is provided with two, the inner side of each first fixed seat is provided with a sliding groove, and the inner side of the sliding groove of each group of two first fixed seats is slidably connected to a moving rod, the outer wall of the moving rod is fixedly connected to a hydraulic cylinder, the top of the rotary tiller and the top of the movable plate are fixedly connected to two groups of first fixed plates, each group of the first fixed plates is provided with two, the inner sides of the two first fixed plates are rotatably connected to the first rotating shaft, and the outer wall of the first rotating shaft is fixed A first curved plate is connected, and two groups of second fixed plates are fixedly connected to the tops of the first folding portion and the second folding portion, and each group of second fixed plates is provided with two, and the inner sides of each group of two second fixed plates are rotatably connected to the third rotating shaft, and the first fixed plate is rotatably connected to the outer wall of the third rotating shaft, and the inner sides of each group of two second fixed plates are rotatably connected to the second rotating shaft, and the outer wall of the second rotating shaft is fixedly connected to two second curved plates, and the inner sides of the two second curved plates are rotatably connected to a rotating column, and the first curved plate is rotatably connected to the outer wall of the rotating column, and the rotating column is fixedly connected to the output end of the hydraulic cylinder.

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

[0008] As a further solution of the present invention: the lifting mechanism also 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 driving motor is installed on the top of the fourth fixed plate, the output end of the driving motor passes through the bottom of the fourth fixed plate and is fixedly connected to the one-way threaded screw, and a synchronous rotation component is provided at the bottom of the fourth fixed plate.

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

[0010] As a further solution of the present invention: the lateral movement assembly 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 movable 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 respectively meshes with the first spur rack and the second spur rack.

[0011] As a further solution of the present invention: the supporting mechanism includes a first rectangular groove opened on the inner side of the second sliding plate, the inner side of the first rectangular groove is fixedly connected to two second fixed seats, a second rotating rod is rotatably connected between the two second fixed seats, the second rotating rod passes through one side of the second fixed seat and is fixedly connected to a circular plate, a torsion spring is installed between the circular plate and the second fixed seat, the outer wall of the second rotating rod is fixedly connected to the first rotating plate, a second rectangular groove is opened on the inner side of the third fixed plate, the inner side of the second rectangular groove is slidably connected to the third sliding plate, the top of the third sliding plate is fixedly connected to two second connecting plates, and the inner sides of the two second connecting plates are rotatably connected to a fourth rotating rod, and the fourth rotating rod passes through the outer side of the second connecting plate and is fixedly connected to the first rotating plate.

[0012] As a further solution of the present invention: the support mechanism also includes a connecting groove provided on the inner side of the first rotating plate, the inner side of the connecting groove is sleeved with a third rotating rod, the outer wall of the third rotating rod is fixedly connected to the second rotating plate, the inner side of the second rotating plate is slidably connected to the fourth sliding plate, one end of the fourth sliding plate is installed with a compression spring between one end of the fourth sliding plate and the inner side of the second rotating plate, the inner side of the second sliding plate is provided with a third rectangular groove which is connected to the first rectangular groove, the inner side of the third rectangular groove is slidably connected to a sliding block, the bottom of the sliding block is fixedly connected to two third connecting plates, the inner sides of the two third connecting plates are rotatably connected to the fifth rotating rod, the fifth rotating rod passes through the outer walls of the two third connecting plates and is fixedly connected to the third rotating plate, and the fourth sliding plate is slidably connected to the inner side of the third rotating plate.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. By setting a rotating mechanism, the second fixed plate is driven to rotate, thereby driving the first folding part and the second folding part to rotate, so that the first folding part and the second folding part are folded. As a result, the width of the whole machine is greatly reduced after folding, which is convenient for transportation and reduces component loss. At the same time, it can flexibly switch to a single-side operation mode to improve the farming efficiency of narrow plots. At the same time, the first folding part and the second folding part can be automatically locked and opened, which improves work efficiency, reduces structural redundancy, and thus improves the overall practicality of the device. 2. By setting a lifting mechanism, the second spur gear is driven to rotate, thereby driving the second spur rack to move in the direction of the limit rod, thereby driving the first folding part to move in the direction of the limit rod, thereby changing the overall center of gravity of the rotary tiller. In this way, after the second folding part on one side of the rotary tiller is unfolded, the folded position of the first folding part can be adjusted to the center position of the combination of the rotary tiller and the second folding part, so that the center of gravity of the rotary tiller is always maintained in the center area, reducing the left and right swaying or "nodding" phenomenon caused by vibration, improving the stability of operation, and at the same time, after the center of gravity is centered, the force on the transmission shaft and other parts inside the rotary tiller is more balanced, avoiding the overload and wear of the unilateral components caused by the traditional center of gravity offset, thereby improving the overall practicality of the device; 3. By setting a supporting mechanism, the second rotating plate is driven to rotate, and the fourth sliding plate is pushed to move laterally under the action of the compression spring, thereby driving 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, and the shear force and tensile force in the plane are converted into 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 for tilling, the impact force of the blade will generate an upward lifting torque or lateral thrust. At this time, the triangular support structure disperses the torque to each support rod through a rigid node, thereby improving the support effect on the first folding part, thereby improving the overall practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a folding schematic diagram of the present invention; Figure 3 This is a schematic diagram of a single-side folding of the present invention; Figure 4 It is a schematic structural diagram of the rotating mechanism of the present invention; Figure 5 It is a schematic diagram of the partial structure of the rotating mechanism of the present invention; Figure 6 It is a structural schematic diagram of the lifting mechanism of the present invention; Figure 7 For the present invention Figure 6 Enlarged view of point A in the middle; Figure 8 This is a schematic diagram of the structure of the lateral movement component of the present invention; Figure 9 is a cross-sectional view of the support mechanism of the present invention; Figure 10 Exploded views of the third fixed plate, the first rotating plate, and the second sliding plate of the present invention; Figure 11 For the present invention Figure 10 Enlarged view of point B in the middle; Figure 12 Schematic diagram of the second rotating plate structure of the present invention; Figure 13 It is an expanded view of the support mechanism of the present invention; Figure 14 It is a schematic structural diagram of the second fixing seat of the present invention.

[0015] In the figure: 1, rotary tiller; 2, first folding part; 3, second folding part; 4, moving plate; 5, first fixed seat; 6, moving rod; 7, hydraulic cylinder; 8, first fixed plate; 9, second fixed plate; 10, first rotating shaft; 11, first curved plate; 12, rotating column; 13, second rotating shaft; 14, third rotating shaft; 15, second curved plate; 16, first connecting plate; 17, connecting rod; 18, fixing 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, driving motor Machine; 32. One-way threaded screw; 33. Chain; 34. First straight gear; 35. First straight rack; 36. Second straight rack; 37. First rotating rod; 38. Second straight 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. Round plate; 59. Support plate; 60. Support bar. DETAILED DESCRIPTION

[0016] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0017] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and should not be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, they can be fixedly connected, detachably connected, or connected in one piece; they can be mechanically connected or electrically connected; they can be directly connected, or indirectly connected through an intermediate medium, or they can be internal connections between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The following describes an embodiment of the present invention based on its overall structure.

[0018] See also Figures 1 to 14The present embodiment provides a three-fold rotary tiller, comprising: a rotary tiller 1, a first folding portion 2 and a second folding portion 3 are respectively provided on both sides of the rotary tiller 1, a rotating mechanism, a lifting mechanism and a supporting mechanism are provided on the top of the rotary tiller 1; the rotating mechanism comprises four groups of first fixed seats 5 fixedly connected to the top of the rotary tiller 1 and the top of the movable plate 4, each group of first fixed seats 5 is provided with two, and each first fixed seat 5 is provided with a sliding groove on the inner side, and a moving rod 6 is slidably connected to the inner side of the sliding groove of each group of two first fixed seats 5, and the outer wall of the moving rod 6 is fixed A hydraulic cylinder 7 is fixedly connected, and two groups of first fixed plates 8 are fixedly connected to the top of the rotary tiller 1 and the top of the movable plate 4. Each group of first fixed plates 8 is provided with two, and the inner sides of the two first fixed plates 8 are rotatably connected to the first rotating shaft 10. The outer wall of the first rotating shaft 10 is fixedly connected to the first curved plate 11. The tops of the first folding portion 2 and the second folding portion 3 are fixedly connected to two groups of second fixed plates 9. Each group of second fixed plates 9 is provided with two, and the inner sides of the two second fixed plates 9 are rotatably connected to the third rotating shaft 14, and the first fixed plate 8 rotates. The outer wall of the third rotating shaft 14 is rotatably connected to the inner side of each group of two second fixed plates 9, and the second rotating shaft 13 is rotatably connected to the outer wall of the second rotating shaft 13. The outer wall of the second rotating shaft 13 is fixedly connected to two second curved plates 15. The inner sides of the two second curved plates 15 are rotatably connected to the rotating column 12, and the first curved 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, and the bottoms of the first folding part 2 and the second folding part 3 are fixedly connected. Two locking blocks 23, one side of the hydraulic cylinder 7 is fixedly connected to the first connecting plate 16 by a bolt assembly, one side of the first connecting plate 16 is provided with a fixing groove 18, the inner side of the fixing groove 18 is fixedly connected to the connecting rod 17 by a bolt assembly, the inner side of the first rectangular plate 20 is rotatably connected to the fifth rotating shaft 21, the outer wall of the fifth rotating shaft 21 is fixedly connected to the locking plate 22, the inner side of the locking plate 22 is rotatably connected to the fourth rotating shaft 19, and the connecting rod 17 is rotatably connected to the outer wall of the fourth rotating shaft 19, and a locking groove 24 is provided on the inner side of the locking block 23; 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. The hydraulic cylinder 7 is controlled by the PLC controller, which can control the intermittent start of the hydraulic cylinder 7. When the staff needs to fold the rotary tiller 1, the PLC controller controls the hydraulic cylinder 7 to start. Since the first folding part 2 is locked, the hydraulic cylinder 7 first drives the moving rod 6 to move in the direction of the first connecting plate 16 before retracting, thereby driving the first connecting plate 16 to move in the direction of the locking block 23, thereby driving the connecting rod 17 to move in the direction of the locking block 23, thereby driving the first rectangular plate 20 to rotate clockwise, thereby opening the limit of the locking block 23. At this time, the output end of the hydraulic cylinder 7 drives the rotating column 12 to the first The first fixing seat 5 moves in the direction of the first fixing seat 5, thereby driving the second curved plate 15 to move in the direction of the first fixing seat 5, thereby driving the second fixing 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, so that the width of the whole machine is greatly reduced after folding, which is convenient for transportation and reduces component loss. At the same time, the single-side operation mode can be flexibly switched to improve the farming efficiency of narrow plots. At the same time, the first folding part 2 and the second folding part 3 can be automatically locked and opened, thereby improving work efficiency, reducing structural redundancy, and thus improving the overall practicality of the device; When the above steps are performed in the direction of operation, after the first folding part 2 and the second folding part 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 toward the direction of the first connecting plate 16 through the moving rod 6, so that the locking block 23 rotates toward the inside of the locking groove 24, and the unfolded first folding part 2 and the second folding part 3 are locked, thereby improving the overall stability of the device.

[0019] See also Figures 2 to 8The lifting mechanism includes two third fixed plates 26 fixedly connected to both sides of the rotary tiller 1, the tops of the two third fixed plates 26 are fixedly connected to the limit rod 27, the outer wall of the limit rod 27 is fixedly connected to the second rectangular plate 28, the top of the limit rod 27 is fixedly connected to the fourth fixed plate 29, the outer wall of the limit rod 27 is slidably connected to the second sliding plate 30, one end of the second sliding plate 30 is fixedly connected to the first sliding plate 25, and the inner side of the first sliding plate 25 is slidably connected to the movable plate 4; the lifting mechanism also includes a one-way threaded screw 32 rotatably connected to the inner sides 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, the drive motor 31 The output end passes through 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, and 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 spur rack 35 fixedly connected to one side of the rotary tiller 1, a second spur rack 36 is fixedly connected to one side of the moving plate 4, and a first rotating rod 37 is rotatably connected to one side of the first sliding plate 25. One end of the first rotating rod 37 is fixedly connected to the second spur gear 38, and the second spur gear 38 is respectively meshed with the first spur rack 35 and the second spur rack 36; Before unilateral folding of the rotary tiller 1, the staff can use a tool such as a screwdriver 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, the connecting rod 17, the locking plate 22, the support plate 59 and the support bar 60, etc., to prevent interference with the lateral movement of the first folding part 2; The drive motor 31 is controlled by a PLC controller, which can control the drive motor 31 to start intermittently. When the rotary tiller 1 needs to be folded on one side, the PLC controller controls the two hydraulic cylinders 7 on the top of the movable plate 4 to start. When the first folding part 2 is folded to the folded position, the PLC controller controls the drive motor 31 to start, thereby driving the one-way threaded screw 32 to rotate, thereby driving a first straight gear 34 to rotate, thereby driving the chain 33 to move, thereby driving another one-way threaded screw 32 to rotate, thereby driving the two second sliding plates 30 to move upward, thereby driving the two first sliding plates 25 to move upward, thereby driving the first folding part 2 to move upward, when the first sliding plate 25 moves upward to the tooth on one side of the first sliding plate 25 and the first straight rack 3 5, at this time, under the action of the first sliding plate 25, the second spur gear 38 is driven to rotate, thereby driving the second spur rack 36 to move in the direction of the limit rod 27, thereby driving the first folding part 2 to move in the direction of the limit rod 27, thereby changing the overall center of gravity of the rotary tiller 1. In this way, after the second folding part 3 on one side of the rotary tiller 1 is unfolded, the folded position of the first folding part 2 can be adjusted to the center position of the combination of the rotary tiller 1 and the second folding part 3, so that the center of gravity of the rotary tiller 1 is always maintained in the central area, reducing the left and right swaying or "nodding" phenomenon caused by vibration, improving the operation stability, and at the same time, after the center of gravity is centered, the force on the transmission shaft and other parts inside the rotary tiller 1 is more balanced, avoiding the overload and wear of the unilateral components caused by the traditional center of gravity offset, thereby improving the overall practicality of the device.

[0020] See also Figures 5 to 14The supporting mechanism includes a first rectangular groove 42 opened on the inner side of 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, the second rotating rod 40 passes through one side of the second fixed seat 39 and is fixedly connected to a circular plate 58, a torsion spring 50 is installed between the circular plate 58 and the second fixed seat 39, the outer wall of the second rotating rod 40 is fixedly connected to the first rotating plate 41, a second rectangular groove 43 is opened on the inner side of the third fixed plate 26, the inner side of the second rectangular groove 43 is slidably connected to the third sliding plate 44, the top of the third sliding plate 44 is fixedly connected to two second connecting plates 49, the inner sides of the two second connecting plates 49 are rotatably connected to a fourth rotating rod 51, 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 supporting mechanism also includes a connecting groove 52 provided on the inner side of the first rotating plate 41, and a third rotating rod 45 is sleeved on the inner side of the connecting groove 52. The outer wall of the third rotating rod 45 is fixedly connected to the second rotating plate 46, and the inner side of the second rotating plate 46 is slidably connected to the fourth sliding plate 47. 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 provided on the inner side of the second sliding plate 30, and a sliding block 54 is slidably connected to the inner side of the third rectangular groove 57. The bottom of the sliding block 54 is fixedly connected to two third connecting plates 55, and the inner sides of the two third connecting plates 55 are rotatably connected to the fifth rotating rod 56. The fifth rotating rod 56 penetrates into the outer walls of the two third connecting plates 55 and is fixedly connected to the third rotating plate 53. The fourth sliding plate 47 is slidably connected to the inner side of the third rotating plate 53. When the second sliding plate 30 moves upward, the first rectangular slot 42 and the sliding block 54 are driven upward by the action of the second sliding plate 30. During this process, the first rotating plate 41 is expanded under the action of the torsion spring 50, thereby driving the second rotating plate 46 to rotate. At the same time, the fourth sliding plate 47 is pushed to move horizontally under the action of the compression spring 48, thereby driving the sliding block 54 to move horizontally, so that 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 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 for tilling, the impact force of the blade will generate an upward lifting torque or lateral thrust. At this time, the triangular support structure disperses 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.

[0021] The above is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A three-fold rotary tiller, characterized in that: include: A rotary tiller (1), wherein a first folding portion (2) and a second folding portion (3) are respectively provided 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 comprises two third fixed plates (26) fixedly connected to both sides of the rotary tiller (1), the tops of the two third fixed plates (26) are fixedly connected to a limiting rod (27), the outer wall of the limiting rod (27) is fixedly connected to a second rectangular plate (28), the top of the limiting rod (27) is fixedly connected to a fourth fixed plate (29), the outer wall of the limiting rod (27) is slidably connected to a second sliding plate (30), one end of the second sliding plate (30) is fixedly connected to the first sliding plate (25), and the inner side of the first sliding plate (25) is slidably connected to the movable plate (4).

2. A three-fold rotary tiller according to claim 1, characterized in that: The rotating mechanism comprises four groups of first fixed seats (5) fixedly connected to the top of the rotary tiller (1) and the top of the movable plate (4), each group of the first fixed seats (5) is provided with two, the inner side of each first fixed seat (5) is provided with a sliding groove, and the inner side of the sliding groove of each group of two first fixed seats (5) is slidably connected to a moving rod (6), the outer wall of the moving rod (6) is fixedly connected to a hydraulic cylinder (7), the top of the rotary tiller (1) and the top of the movable plate (4) are fixedly connected to two groups of first fixed plates (8), each group of the first fixed plates (8) is provided with two, the inner sides of the two first fixed plates (8) are rotatably connected to a first rotating shaft (10), the outer wall of the first rotating shaft (10) is fixedly connected to a first arc plate (11), the Two groups of second fixed plates (9) are fixedly connected to the tops of the first folding portion (2) and the second folding portion (3), and each group of the second fixed plates (9) is provided with two. The inner sides of the two second fixed plates (9) in each group are rotatably connected to a third rotating shaft (14), and the first fixed plate (8) is rotatably connected to the outer wall of the third rotating shaft (14). The inner sides of the two second fixed plates (9) in each group are rotatably connected to a second rotating shaft (13). The outer wall of the second rotating shaft (13) is fixedly connected to two second curved plates (15), and the inner sides of the two second curved plates (15) are rotatably connected to a rotating column (12), and the first curved 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).

3. A three-fold rotary tiller according to claim 2, characterized in that: The rotating mechanism further comprises four first rectangular plates (20) fixedly connected to the bottom of the rotary tiller (1); the bottoms of the first folding portion (2) and the second folding portion (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) via a bolt assembly; a fixing groove (18) is provided on one side of the first connecting plate (16); the inner side of the fixing groove (18) is fixedly connected to a connecting rod (17) via a bolt assembly; the inner side of the first rectangular plate (20) is rotatably connected to a fifth rotating shaft (21); the outer wall of the fifth rotating shaft (21) is fixedly connected to a locking plate (22); the inner side of the locking plate (22) is rotatably connected to a fourth rotating shaft (19); the connecting rod (17) is rotatably connected to the outer wall of the fourth rotating shaft (19); and the inner side of the locking block (23) is provided with a locking groove (24).

4. The three-fold rotary tiller according to claim 3, characterized in that: The lifting mechanism also includes a one-way threaded screw (32) rotatably connected to the inner sides 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 driving motor (31) is installed on the top of the fourth fixed plate (29), the output end of the driving motor (31) passes through the bottom of the fourth fixed plate (29) and is fixedly connected to the one-way threaded screw (32), and a synchronous rotation component is provided at the bottom of the fourth fixed plate (29).

5. The three-fold rotary tiller according to claim 4, characterized in that: The synchronous rotation assembly comprises two first spur gears (34) fixedly connected to the outer walls of the two one-way threaded screw rods (32), a chain (33) is installed 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).

6. The three-fold rotary tiller according to claim 5, characterized in that: The transverse movement assembly comprises a first spur rack (35) fixedly connected to one side of the rotary tiller (1); a second spur rack (36) fixedly connected to one side of the movable 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) meshing with the first spur rack (35) and the second spur rack (36), respectively.

7. The three-fold rotary tiller according to claim 6, characterized in that: The support mechanism comprises a first rectangular groove (42) provided on the inner side of 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), the second rotating rod (40) passes through one side of the second fixed seat (39) and is fixedly connected to a circular plate (58), a torsion spring (50) is installed between the circular plate (58) and the second fixed seat (39), the outer wall of the second rotating rod (40) is fixedly connected to the first rotating plate (41), a second rectangular groove (43) is provided on the inner side of the third fixed plate (26), a third sliding plate (44) is slidably connected to the inner side of the second rectangular groove (43), the top of the third sliding plate (44) is fixedly connected to two second connecting plates (49), the inner sides of the two second connecting plates (49) are both rotatably connected to a fourth rotating rod (51), 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).

8. The three-fold rotary tiller according to claim 7, characterized in that: The support mechanism further comprises a connecting groove (52) provided on the inner side of the first rotating plate (41), a third rotating rod (45) being sleeved on the inner side of the connecting groove (52), a second rotating plate (46) being fixedly connected to the outer wall of the third rotating rod (45), a fourth sliding plate (47) being slidably connected to the inner side of the second rotating plate (46), a compression spring (48) being installed between one end of the fourth sliding plate (47) and the inner side of the second rotating plate (46), and the inner side of the second sliding plate (30) being provided with the first moment The third rectangular groove (57) is connected to the third rectangular groove (42), the inner side of the third rectangular groove (57) is slidably connected to a sliding block (54), the bottom of the sliding block (54) is fixedly connected to two third connecting plates (55), the inner sides of the two third connecting plates (55) are rotatably connected to a fifth rotating rod (56), the fifth rotating rod (56) passes through the outer walls of the two third connecting plates (55) and is fixedly connected to the third rotating plate (53), and the fourth sliding plate (47) is slidably connected to the inner side of the third rotating plate (53).

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