A rotary cultivator frame structure

Abstract

The utility model relates to a kind of rotary cultivator rack structure, including main plate and vice plate, vice plate is set on main plate by folding mechanism, main shaft and auxiliary shaft are respectively horizontally rotationally arranged on main plate and vice plate, one end of main shaft is slidably provided with connecting shaft by elastic structure, installation mechanism is provided on main plate, installation mechanism is respectively matched with folding mechanism and connecting shaft, in the process of folding mechanism operation, installation mechanism will make connecting shaft slide to main shaft to avoid auxiliary shaft, when auxiliary shaft is aligned with main shaft, connecting shaft will be reset under the action of elastic structure and be connected with auxiliary shaft, the utility model reduces space occupancy by folding mechanism, facilitate transportation, reduce transportation cost and difficulty, when needing to be unfolded and work, folding mechanism operates, cooperate installation mechanism and elastic structure, can ensure that auxiliary shaft and main shaft are aligned and connected stably, guarantee the continuity and stability of rotary cultivation.

Description

Technical Field

[0001] This utility model relates to the field of rotary tiller technology, specifically a rotary tiller frame structure. Background Technology

[0002] In modern agricultural production, rotary tillers are important agricultural machines widely used in land preparation operations, and their frame structure has a key impact on the overall performance and applicability of rotary tillers.

[0003] However, traditional rotary tiller frame structures have some significant limitations. First, their dimensions are generally fixed, making flexible size adjustments impossible to suit different usage scenarios. This fixed-size frame often fails to achieve optimal results when dealing with farmland of varying sizes. For example, in small plots of farmland or areas with complex terrain, large, fixed-frame rotary tillers are difficult to operate flexibly, potentially resulting in ineffective tillage of certain areas and energy waste due to the mismatch between the equipment and limited space. Conversely, in large-area farmland operations, smaller, fixed-frame designs cannot fully utilize the rotary tiller's efficiency advantages.

[0004] Furthermore, fixed-frame rotary tillers present numerous inconveniences during transportation. Due to their relatively fixed size and shape, they require significant space for long-distance transport or field transfers, leading to increased transportation costs and reduced efficiency. Moreover, the fixed frame also complicates maintenance, upkeep, or storage, negatively impacting the overall efficiency of agricultural production. Summary of the Invention

[0005] The purpose of this utility model is to provide a rotary tiller frame structure to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A rotary tiller frame structure includes a main plate and a sub-plate. The sub-plate is mounted on the main plate via a folding mechanism. A main shaft and a sub-shaft are respectively horizontally rotatably mounted on the main plate and the sub-plate. When the folding mechanism is running, the sub-plate will drive one end of the sub-shaft to align with one end of the main shaft.

[0008] One end of the main shaft is slidably connected to a connecting shaft via an elastic structure. The main board is provided with an installation mechanism, which cooperates with the folding mechanism and the connecting shaft respectively. During the operation of the folding mechanism, the installation mechanism will cause the connecting shaft to slide inside the main shaft to avoid the secondary shaft. When the secondary shaft is aligned with the main shaft, the connecting shaft will be reset under the action of the elastic structure and connected to the secondary shaft.

[0009] As a further embodiment of this utility model:

[0010] The folding mechanism includes a rotating rod and two sets of connecting rods, with two connecting rods in each set. The rotating rod is rotatably mounted on the main board.

[0011] One end of one set of connecting rods is connected to both ends of the rotating rod, and the other end is rotatably connected to the sub-plate. The two ends of the other set of connecting rods are rotatably connected to the main plate and the sub-plate, respectively. The two sets of connecting rods together with the main plate and the sub-plate form two parallelograms.

[0012] A cylinder is rotatably mounted on the main board, and the output end of the cylinder is rotatably connected to any one of the connecting rods.

[0013] As a further improvement of this utility model:

[0014] The elastic structure includes a thumbtack rod and a spring, wherein the thumbtack rod is connected to one end of the connecting shaft located inside the main shaft, and the spring is disposed inside the main shaft;

[0015] A baffle is provided inside the main shaft, and the two ends of the spring abut against the baffle and the thumbtack rod respectively, so that the connecting shaft always has a tendency to move outward from the main shaft. A limiting ring is provided inside the main shaft that abuts against the side of the thumbtack rod away from the spring.

[0016] The outer wall of the connecting shaft is provided with mating posts along its length direction. There are multiple mating posts and they are evenly distributed around the circumference. The inner wall of the main shaft is provided with sliding grooves along its length direction. There are multiple sliding grooves and they are evenly distributed around the circumference. The multiple mating posts are respectively located in the multiple sliding grooves and slide and engage with each other.

[0017] As a further improvement of this utility model:

[0018] The folding mechanism includes a movable plate and a push rod that is vertically slidably disposed on the movable plate. A ring is coaxially disposed on the outer wall of the connecting shaft, and one end of the push rod abuts against the side of the ring away from the main shaft.

[0019] The movable plate is horizontally slidably mounted on the main board via a guide rod. A rotating column is horizontally rotatably mounted on the main board, and the movable plate is movably engaged with the rotating column.

[0020] As a further improvement of this utility model:

[0021] The movable plate has rolling balls that are embedded inside it, and the outer wall of the rotating column has a spiral groove along its length, and the rolling balls are also rolled and embedded in the spiral groove.

[0022] The main board is provided with an inclined slide rail, and the push rod is provided with a sliding column. The sliding column is located inside the inclined slide rail and slides in cooperation with it.

[0023] When the moving plate moves horizontally towards the main plate, the push rod will move vertically upward while moving towards the main plate. The push rod will drive the connecting shaft to retract into the main shaft through the ring, and the spring will be compressed. When the push rod separates from the ring, at this time, one end of the secondary shaft is aligned with one end of the main shaft.

[0024] As a further improvement of this utility model:

[0025] A transmission rod is vertically rotatably mounted on the main board, and a first bevel gear and a second bevel gear are coaxially mounted at both ends of the transmission rod.

[0026] One end of the rotating column is coaxially provided with a third bevel gear that meshes with the first bevel gear, and the rotating rod is coaxially provided with a fourth bevel gear that meshes with the second bevel gear.

[0027] As a further improvement of this utility model:

[0028] The inner wall of the end of the secondary shaft corresponding to the main shaft is provided with a mating groove along its length direction. There are multiple mating grooves and they are evenly distributed along the circumference.

[0029] Multiple mating grooves are adapted to multiple mating posts. When one end of the secondary shaft is aligned with one end of the main shaft, the connecting shaft will move closer to and fit against the secondary shaft under the action of the elastic structure, and the mating post will be inserted into the mating groove during the rotation of the main shaft.

[0030] Compared with the prior art, the beneficial effects of this utility model are:

[0031] When the folding mechanism is running, the secondary plate drives the secondary shaft to align with the main shaft. At the same time, the mounting mechanism cooperates with the folding mechanism to make the connecting shaft slide inside the main shaft to avoid collision. After the secondary shaft is aligned with the main shaft, the elastic structure pushes the connecting shaft to reset and connect with the secondary shaft, completing the transformation of the frame from folded to unfolded working state.

[0032] This application utilizes a folding mechanism to allow the rotary tiller frame to be folded in a non-operating state, reducing space occupation, facilitating transportation, and lowering transportation costs and difficulties. In small-scale rotary tillage operations, the folded frame avoids unnecessary equipment deployment, effectively preventing energy waste and improving energy efficiency and economy. When deployment is required, the folding mechanism operates, working in conjunction with the installation mechanism and flexible structure to ensure that the secondary shaft and main shaft are securely aligned and connected, guaranteeing the continuity and stability of rotary tillage operations. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the overall structure of one embodiment of a rotary tiller frame.

[0034] Figure 2 This is a cross-sectional view of the main board and main shaft in one embodiment of the rotary tiller frame structure.

[0035] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0036] Figure 4 This is a cross-sectional view of the movable plate in one embodiment of the rotary tiller frame structure.

[0037] Figure 5 for Figure 4 Enlarged view of section B in the middle.

[0038] Figure 6 This is a schematic diagram showing the partial disassembly of the folding mechanism in one embodiment of the rotary tiller frame structure.

[0039] Figure 7 This is a schematic diagram of the mating groove and mating column in one embodiment of the rotary tiller frame structure.

[0040] In the diagram: 1. Main board; 2. Sub-board; 3. Main spindle; 301. Slide groove; 4. Sub-shaft; 401. Mating groove; 5. Connecting shaft; 501. Mating column; 6. Rotating rod; 7. Connecting rod; 8. Cylinder; 9. Thumbtack rod; 10. Spring; 11. Baffle; 12. Limiting ring; 13. Circular ring; 14. Moving plate; 15. Push rod; 16. Guide rod; 17. Rotating column; 1701. Spiral groove; 18. Ball bearing; 19. Inclined slide rail; 20. Sliding column; 21. Transmission rod; 22. Bevel gear No. 1; 23. Bevel gear No. 2; 24. Bevel gear No. 3; 25. Bevel gear No. 4. Detailed Implementation

[0041] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0042] Furthermore, the elements in this invention are referred to as being "fixed to" or "set on" another element, which may be directly on the other element or may also include an intervening element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or may also include an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0043] Please see Figures 1-7 In this embodiment of the utility model, a rotary tiller frame structure includes a main plate 1 and a secondary plate 2. The secondary plate 2 is mounted on the main plate 1 via a folding mechanism. A main shaft 3 and a secondary shaft 4 are respectively horizontally rotatably mounted on the main plate 1 and the secondary plate 2. When the folding mechanism is running, the secondary plate 2 will drive one end of the secondary shaft 4 to align with one end of the main shaft 3.

[0044] One end of the main shaft 3 is slidably provided with a connecting shaft 5 through an elastic structure. The main board 1 is provided with an installation mechanism, which cooperates with the folding mechanism and the connecting shaft 5 respectively. During the operation of the folding mechanism, the installation mechanism will cause the connecting shaft 5 to slide inward into the main shaft 3 to avoid the secondary shaft 4. When the secondary shaft 4 is aligned with the main shaft 3, the connecting shaft 5 will be reset under the action of the elastic structure and connected to the secondary shaft 4.

[0045] In this design, when the folding mechanism is running, the secondary plate 2 will move accordingly, causing one end of the secondary shaft 4 to align with one end of the main shaft 3. At the same time, the mounting mechanism works synchronously on the main plate 1. It works in conjunction with the folding mechanism and the connecting shaft 5. During the unfolding process, it allows the connecting shaft 5 to slide into the main shaft 3, thereby making room for the secondary shaft 4 and avoiding interference between the two. When the folding mechanism completes its operation and the secondary shaft 4 is aligned with the main shaft 3, the elastic structure takes effect, pushing the connecting shaft 5 to reset and connecting it with the secondary shaft 4, thus completing the transformation of the entire rotary tiller frame structure from the folded state to the unfolded working state.

[0046] As a further embodiment of this utility model, the folding mechanism includes a rotating rod 6 and two sets of connecting rods 7, each set of connecting rods 7 consisting of two rods, and the rotating rod 6 is rotatably mounted on the main board 1;

[0047] One end of one set of connecting rods 7 is connected to both ends of the rotating rod 6, and the other end is rotatably connected to the sub-plate 2. The two ends of the other set of connecting rods 7 are rotatably connected to the main plate 1 and the sub-plate 2, and the two sets of connecting rods 7 together with the main plate 1 and the sub-plate 2 form two parallelograms.

[0048] A cylinder 8 is rotatably mounted on the main board 1, and the output end of the cylinder 8 is rotatably connected to any one of the connecting rods 7.

[0049] In this embodiment, the rotating rod 6 is rotatably mounted on the main board 1. One end of a set of connecting rods 7 is connected to both ends of the rotating rod 6, and the other end is rotatably connected to the sub-plate 2. The two sets of connecting rods 7 are rotatably connected to the main board 1 and the sub-plate 2 respectively. The two sets of connecting rods 7, the main board 1, and the sub-plate 2 form two parallelograms. The cylinder 8 is rotatably mounted on the main board 1, and its output end is rotatably connected to any of the connecting rods 7. The cylinder 8 drives the connecting rod 7 to swing, thereby rotating the rotating rod 6 and causing the sub-plate 2 to move along the parallelogram trajectory, thus achieving folding or unfolding.

[0050] As a further embodiment of this utility model, the elastic structure includes a thumbtack rod 9 and a spring 10. The thumbtack rod 9 is connected to one end of the connecting shaft 5 located inside the main shaft 3, and the spring 10 is disposed inside the main shaft 3.

[0051] A baffle 11 is provided inside the main shaft 3. The two ends of the spring 10 abut against the baffle 11 and the thumbtack rod 9 respectively, so that the connecting shaft 5 always has a tendency to move outward from the main shaft 3. A limiting ring 12 is provided inside the main shaft 3, which abuts against the side of the thumbtack rod 9 away from the spring 10.

[0052] The outer wall of the connecting shaft 5 is provided with a mating post 501 along its length direction. There are multiple mating posts 501 and they are evenly distributed along the circumference. The inner wall of the main shaft 3 is provided with a sliding groove 301 along its length direction. There are multiple sliding grooves 301 and they are evenly distributed along the circumference. The multiple mating posts 501 are respectively located in the multiple sliding grooves 301 and slide and engage with each other.

[0053] In this embodiment, an elastic structure is provided inside the main shaft 3. One end of the thumbtack rod 9 is connected to one end of the connecting shaft 5 inside the main shaft 3. The spring 10 is installed inside the main shaft 3, and its two ends abut against the baffle 11 and the thumbtack rod 9 fixed inside the main shaft 3, respectively, so that the connecting shaft 5 has a tendency to move outward. A limit ring 12 is also fixed inside the main shaft 3, abutting against the side of the thumbtack rod 9 away from the spring 10, limiting the range of movement of the thumbtack rod 9. A plurality of evenly distributed mating posts 501 are fixed on the outer wall of the connecting shaft 5 along the length direction. A plurality of evenly distributed sliding grooves 301 are correspondingly opened on the inner wall of the main shaft 3. The mating posts 501 slide and engage with the sliding grooves 301 respectively, so that the connecting shaft 5 can slide with the main shaft 3, and the connecting shaft 5 rotates when the main shaft 3 rotates.

[0054] As a further embodiment of this utility model, the folding mechanism includes a movable plate 14 and a push rod 15 that is vertically slidably disposed on the movable plate 14. A ring 13 is coaxially disposed on the outer wall of the connecting shaft 5, and one end of the push rod 15 abuts against the side of the ring 13 away from the main shaft 3.

[0055] The movable plate 14 is horizontally slidably mounted on the main plate 1 via the guide rod 16. A rotating column 17 is horizontally rotatably mounted on the main plate 1, and the movable plate 14 is movably engaged with the rotating column 17.

[0056] The movable plate 14 has a ball bearing 18 that is rolled and fitted inside it. The outer wall of the rotating column 17 has a spiral groove 1701 along its length direction, and the ball bearing 18 is also rolled and fitted inside the spiral groove 1701.

[0057] The main board 1 is provided with an inclined slide rail 19, and the push rod 15 is provided with a sliding column 20. The sliding column 20 is located inside the inclined slide rail 19 and slides in cooperation with it.

[0058] When the moving plate 14 moves horizontally toward the main plate 1, the push rod 15 will move vertically upward while moving toward the main plate 1. The push rod 15 will drive the connecting shaft 5 to retract into the main shaft 3 through the ring 13, and the spring 10 will be compressed. When the push rod 15 separates from the ring 13, at this time, one end of the secondary shaft 4 is aligned with one end of the main shaft 3.

[0059] In this embodiment, since the movable plate 14 cannot rotate, when the rotating column 17 rotates, the movable plate 14 will move closer to the main plate 1; the ball bearings 18 of the movable plate 14 roll in the spiral groove 1701 of the rotating column 17, causing the movable plate 14 to move horizontally; one end of the push rod 15 abuts against the ring 13, and the other end is fixed with a sliding column 20, which slides in the inclined slide rail 19, causing the push rod 15 to move horizontally towards the main plate 1 while rising vertically; the push rod 15 drives the connecting shaft 5 to retract into the main shaft 3 through the ring 13, compressing the spring 10; when the push rod 15 separates from the ring 13, the secondary shaft 4 aligns with the main shaft 3.

[0060] As a further embodiment of this utility model, a transmission rod 21 is vertically rotatably mounted on the main board 1, and a first bevel gear 22 and a second bevel gear 23 are coaxially mounted at both ends of the transmission rod 21.

[0061] One end of the rotating column 17 is coaxially provided with a third bevel gear 24 that meshes with the first bevel gear 22, and the rotating rod 6 is coaxially provided with a fourth bevel gear 25 that meshes with the second bevel gear 23.

[0062] In this embodiment, when the cylinder 8 pushes the connecting rod 7 to rotate, the rotating rod 6 rotates, and the fourth bevel gear 25 on it meshes with the second bevel gear 23 at the upper end of the transmission rod 21, causing the transmission rod 21 to rotate; the first bevel gear 22 at the lower end of the transmission rod 21 meshes with the third bevel gear 24 at the end of the rotating column 17, driving the rotating column 17 to rotate.

[0063] As a further embodiment of this utility model, the inner wall of the end of the secondary shaft 4 corresponding to the main shaft 3 is provided with a mating groove 401 along its length direction, and there are multiple mating grooves 401 and they are evenly distributed along the circumference.

[0064] Multiple mating grooves 401 are adapted to multiple mating posts 501. When one end of the secondary shaft 4 is aligned with one end of the main shaft 3, the connecting shaft 5 will move closer to and fit against the secondary shaft 4 under the action of the elastic structure, and the mating post 501 will be inserted into the mating groove 401 during the rotation of the main shaft 3.

[0065] In this embodiment, when the push rod 15 separates from the ring 13, one end of the secondary shaft 4 is aligned with the main shaft 3. Under the action of the elastic structure, the connecting shaft 5 moves closer to and fits against the secondary shaft 4. Then, when the main shaft 3 rotates, it drives the connecting shaft 5 to rotate, and the mating post 501 is inserted into the mating groove 401 in the secondary shaft 4 to realize the transmission connection.

[0066] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0067] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A rotary tiller frame structure, comprising a main plate (1) and a secondary plate (2), characterized in that, The sub-plate (2) is mounted on the main plate (1) via a folding mechanism. The main plate (1) and the sub-plate (2) are respectively horizontally rotatably mounted with a main shaft (3) and a sub-shaft (4). When the folding mechanism is running, the sub-plate (2) will drive one end of the sub-shaft (4) to align with one end of the main shaft (3). One end of the main shaft (3) is slidably provided with a connecting shaft (5) through an elastic structure. The main board (1) is provided with an installation mechanism. The installation mechanism cooperates with the folding mechanism and the connecting shaft (5) respectively. During the operation of the folding mechanism, the installation mechanism will cause the connecting shaft (5) to slide into the main shaft (3) to avoid the secondary shaft (4). When the secondary shaft (4) is aligned with the main shaft (3), the connecting shaft (5) will be reset under the action of the elastic structure and connected to the secondary shaft (4).

2. The rotary tiller frame structure according to claim 1, characterized in that, The folding mechanism includes a rotating rod (6) and two sets of connecting rods (7), each set of connecting rods (7) consists of two rods, and the rotating rod (6) is rotatably mounted on the main board (1); One end of one set of connecting rods (7) is connected to both ends of the rotating rod (6), and the other end is rotatably connected to the sub-plate (2). The two ends of the other set of connecting rods (7) are rotatably connected to the main plate (1) and the sub-plate (2), and the two sets of connecting rods (7), together with the main plate (1) and the sub-plate (2), form two parallelograms. A cylinder (8) is rotatably mounted on the main board (1), and the output end of the cylinder (8) is rotatably connected to any one of the connecting rods (7).

3. The rotary tiller frame structure according to claim 2, characterized in that, The elastic structure includes a thumbtack rod (9) and a spring (10). The thumbtack rod (9) is connected to one end of the connecting shaft (5) located inside the main shaft (3), and the spring (10) is disposed inside the main shaft (3). A baffle (11) is provided inside the main shaft (3). The two ends of the spring (10) abut against the baffle (11) and the thumbtack rod (9) respectively, so that the connecting shaft (5) always has a tendency to move outward from the main shaft (3). A limiting ring (12) is provided inside the main shaft (3) and abuts against the side of the thumbtack rod (9) away from the spring (10). The outer wall of the connecting shaft (5) is provided with mating posts (501) along its length direction. There are multiple mating posts (501) and they are evenly distributed along the circumference. The inner wall of the main shaft (3) is provided with sliding grooves (301) along its length direction. There are multiple sliding grooves (301) and they are evenly distributed along the circumference. The multiple mating posts (501) are respectively located in the multiple sliding grooves (301) and slide and engage with each other.

4. The rotary tiller frame structure according to claim 3, characterized in that, The folding mechanism includes a movable plate (14) and a push rod (15) that is vertically slidably disposed on the movable plate (14). A ring (13) is coaxially disposed on the outer wall of the connecting shaft (5). One end of the push rod (15) abuts against the side of the ring (13) away from the main shaft (3). The movable plate (14) is horizontally slidably mounted on the main plate (1) via a guide rod (16). A rotating column (17) is horizontally rotatably mounted on the main plate (1), and the movable plate (14) and the rotating column (17) are in movable cooperation.

5. The rotary tiller frame structure according to claim 4, characterized in that, The movable plate (14) has a ball bearing (18) that is rolled and fitted inside. The outer wall of the rotating column (17) is provided with a spiral groove (1701) along its length direction. The ball bearing (18) is also rolled and fitted inside the spiral groove (1701). The main board (1) is provided with an inclined slide rail (19), and the push rod (15) is provided with a sliding column (20). The sliding column (20) is located inside the inclined slide rail (19) and slides in cooperation with each other. When the moving plate (14) moves horizontally toward the main plate (1), the push rod (15) moves vertically upward while moving toward the main plate (1). The push rod (15) drives the connecting shaft (5) to retract into the main shaft (3) through the ring (13). The spring (10) will be compressed. When the push rod (15) separates from the ring (13), at this time, one end of the secondary shaft (4) is aligned with one end of the main shaft (3).

6. The rotary tiller frame structure according to claim 4, characterized in that, A transmission rod (21) is vertically rotatably mounted on the main board (1), and a first bevel gear (22) and a second bevel gear (23) are coaxially mounted at both ends of the transmission rod (21). One end of the rotating column (17) is coaxially provided with a third bevel gear (24) that meshes with the first bevel gear (22), and the rotating rod (6) is coaxially provided with a fourth bevel gear (25) that meshes with the second bevel gear (23).

7. The rotary tiller frame structure according to claim 3, characterized in that, The inner wall of the secondary shaft (4) corresponding to the main shaft (3) is provided with a mating groove (401) along its length direction. There are multiple mating grooves (401) and they are evenly distributed along the circumference. Multiple mating grooves (401) are adapted to multiple mating posts (501). When one end of the secondary shaft (4) is aligned with one end of the main shaft (3), the connecting shaft (5) will move closer to and fit against the secondary shaft (4) under the action of the elastic structure, and the mating post (501) will be inserted into the mating groove (401) during the rotation of the main shaft (3).

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