An external rotary cultivator

Abstract

The utility model relates to rotary cultivator technical field discloses an external rotary cultivator turning over equipment, including cutter shaft, a plurality of rotation grooves are seted up in the cutter shaft inner wall, the cutter shaft left end is fixedly connected with motor, motor drive end is fixedly connected with the pivot, a plurality of drive gear are connected with the pivot outer wall, drive gear all are linked with the sliding toothed plate through the drive assembly, the sliding toothed plate top fixedly connected with connecting rod, the connecting rod is connected with blade through bolt assembly, the cutter shaft left end inner wall four sides all are screw -threaded connection has screw rod, the right end rotation is connected with the limit stop of screw rod, the limit stop outer wall is connected in the cutter shaft inner wall in sliding, the connecting rod is located in the limit stop inner wall, in the utility model, the length of blade is adjusted, thereby realizes the adjustment to the cultivation depth, satisfies the demand of different cultivation, and the damaged blade is replaced alone.

Description

Technical Field

[0001] This utility model relates to the field of rotary tiller technology, and in particular to an external rotary tiller soil turning device. Background Technology

[0002] A rotary tiller is an agricultural machine used for cultivating land and treating soil. It plows the land by rotating blades or shovels, turning, loosening, and mixing the soil, thereby improving soil structure and promoting plant growth. A rotary tiller usually consists of one or more rotating tilling devices and can be driven by a tractor or other power source. It is widely used in agricultural production, especially in tilling, planting, and harvesting.

[0003] A search revealed an external rotary tiller tillage device (publication number CN219499943U) comprising a cutter shaft and blades. A cavity is formed along the axial direction of the cutter shaft, and a slide rod is positioned within the cavity along the axial direction of the cutter shaft. The end of the slide rod extends to the outside of the cutter shaft. Multiple sliding holes are formed through the sidewall of the cavity, and a slider is slidably connected within these holes. The slider is connected to the blades. Several transmission rods are arranged within the cavity, with their ends hinged to the slider and slide rod respectively. Fixing structures for securing the slide rod are provided on the cutter shaft and slide rod. This invention has the following advantages: by controlling the length of the blades extending beyond the cutter shaft, the tillage depth can be adjusted to meet the tillage needs of different crops.

[0004] Based on the aforementioned patent, by controlling the length of the blade extending outside the blade shaft, the depth of tillage can be adjusted to meet the tillage needs of different crops. However, the blades of the rotary tiller may be damaged during tillage, and the entire blade shaft may need to be replaced when replacing the blades, resulting in a waste of resources. In response to this technical problem, this application proposes an external rotary tiller tillage device. Utility Model Content

[0005] To address the problems of existing technologies where the blade length is usually fixed, making it inconvenient to adjust for different crop cultivation needs, and the difficulty in replacing damaged blades, this application provides an external rotary tiller soil turning device.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an external rotary tiller soil turning device, including a cutter shaft, a rotating shaft rotatably connected to the inner wall of the cutter shaft, a plurality of drive gears connected to the outer wall of the rotating shaft, each drive gear being connected to a sliding toothed plate via a drive assembly, a connecting rod fixedly connected to the top of the sliding toothed plate, the outer wall of the connecting rod being slidably connected to the inner wall of the cutter shaft, the connecting rod being connected to the blades via a bolt assembly, screws threadedly connected to all four sides of the inner wall of the left end of the cutter shaft, a limit plate rotatably connected to the right end of the screws, the outer wall of the limit plate being slidably connected to the inner wall of the cutter shaft, and the connecting rod being located on the inner wall of the limit plate.

[0007] As a further improvement of this utility model, the drive assembly includes an internal gear ring that is meshed with the outer diameter of the drive gear, and long gears are meshed with the four sides of the inner diameter of the internal gear ring.

[0008] As a further improvement of this utility model, the clockwise side of the outer wall of the sliding tooth plate is meshed with the right end of the outer wall of the long gear, and a limiting plate is fixedly connected to one end of the inner side of the sliding tooth plate.

[0009] As a further improvement of this utility model, the inner wall of the cutter shaft is provided with multiple rotating grooves, the outer wall of the internal gear ring is rotatably connected to the inner wall of the rotating groove, and the outer wall of the long gear is rotatably connected to the inner wall of the rotating groove.

[0010] As a further improvement of this utility model, the bolt assembly includes a plug plate that is fixedly connected to one end of the inner side of the blade, and a plug groove is provided on one end of the outer side of the connecting rod, and the plug plate fits into the plug groove.

[0011] As a further improvement of this utility model, the inner wall of the plug plate is provided with threaded holes, and the top of the outer wall of the connecting rod on the counterclockwise side is provided with threaded holes, and fasteners are threadedly installed on the inner walls of the multiple threaded holes.

[0012] As a further improvement of this utility model, a motor is fixedly connected to the left end of the inner wall of the cutter shaft, and the left end of the rotating shaft is fixedly connected to the motor drive end.

[0013] In summary, compared with the prior art, this application includes at least one of the following beneficial technical effects:

[0014] 1. In this utility model, the internal gear ring is rotated by starting the motor, thereby moving the sliding gear plate. The blade is then adjusted by connecting rod, thereby adjusting the blade length and thus the tillage depth. This meets the needs of different crops, promotes plant growth, and increases crop yield.

[0015] 2. In this utility model, the blade is fixed to the connecting rod by fasteners, thereby enabling the individual replacement of damaged blades, avoiding the need to replace the entire cutter shaft. This can save the cost and resources of replacement parts, reduce farmers' maintenance expenses, and extend the service life of the equipment. Attached Figure Description

[0016] Figure 1 This is a perspective view of an external rotary tiller soil turning device proposed in this utility model;

[0017] Figure 2 This is a cross-sectional view of the cutter shaft of an external rotary tiller soil turning device proposed in this utility model;

[0018] Figure 3 This is a schematic diagram of a limiting plate for an external rotary tiller soil turning device proposed in this utility model;

[0019] Figure 4 This is a schematic diagram of the internal gear ring of an external rotary tiller soil turning device proposed in this utility model;

[0020] Figure 5 This is a schematic diagram of fasteners for an external rotary tiller soil turning device proposed in this utility model;

[0021] Figure 6 This is a schematic diagram of the connector plate for an external rotary tiller soil turning device proposed in this utility model.

[0022] Legend:

[0023] 1. Cutter shaft; 2. Rotating groove; 3. Motor; 4. Rotating shaft; 5. Drive gear; 6. Internal gear ring; 7. Long gear; 8. Sliding gear plate; 9. Connecting rod; 10. Fastener; 11. Blade; 12. Insertion groove; 13. Insertion plate; 14. Threaded hole; 15. Limiting plate; 16. Screw; 17. Limiting plate. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0026] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0027] In the description of this application, it should be noted that the use of terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" to indicate orientation or positional relationships is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationships commonly used when the product is in use. These terms are used solely for the convenience of describing this application and for 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. Therefore, they should not be construed as limitations on this application. Furthermore, the use of terms such as "first" and "second" in the description of this application is only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0028] Furthermore, the use of terms such as "horizontal" and "vertical" in the description of this application does not imply that the component is required to be absolutely horizontal or suspended, but rather that it may be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but rather that it may be slightly tilted.

[0029] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" 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 connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0030] Example 1: Refer to Figure 1 , Figure 2 and Figure 4An external rotary tiller for turning soil includes a cutter shaft 1. Multiple rotating grooves 2 are formed on the inner wall of the cutter shaft 1. A motor 3 is fixedly connected to the left end of the cutter shaft 1. A rotating shaft 4 is fixedly connected to the drive end of the motor 3. Multiple drive gears 5 are connected to the outer wall of the rotating shaft 4. Long gears 7 are meshed on all four sides of the inner diameter of an inner toothed ring 6. The outer wall of a sliding toothed plate 8 is meshed with the right end of the outer wall of the long gears 7 on one clockwise side. A limiting plate 15 is fixedly connected to one end of the inner side of each sliding toothed plate 8. The right end of the rotating shaft 4 is rotatably connected to the right end of the inner wall of the cutter shaft 1. The inner toothed ring 6 is rotatably connected to the inner wall of the rotating grooves 2. The left and right ends of the long gears 7 are rotatably connected to the left and right ends of the inner wall of the rotating grooves 2. The left and right ends of a connecting rod 9 are slidably connected to the left and right ends of the inner wall of the cutter shaft 1. Screws 16 are threadedly connected to all four sides of the inner wall of the left end of the cutter shaft 1. A limiting plate 17 is rotatably connected to the right end of the screws 16. The outer wall of the limiting plate 17 is slidably connected to the inner wall of the cutter shaft 1. The connecting rod 9 is located on the inner wall of the limiting plate 17.

[0031] Specifically, this utility model needs to be installed on a rotary tiller, and the rotary tiller's operating room has a controller for controlling the motor 3. In actual practice, the planting depth of different crops is often different. When it is necessary to adjust the planting depth, the controller in the rotary tiller's operating room is used to start the motor 3. The motor 3 drives the rotating shaft 4 to rotate, which in turn drives the drive gear 5 to rotate. The drive gear 5 drives the internal gear ring 6 to rotate, which in turn drives the long gear 7 to rotate. The long gear 7 drives the sliding tooth plate 8 to move outward or inward. The long gear 7 is divided into two parts, left and right. The left end meshes with the internal gear ring 6, and the right end meshes with the sliding tooth plate 8. The limiting plate 15 on the inner side of the sliding tooth plate 8 prevents the sliding tooth plate 8 from moving too much into the blade shaft 1. The movement of the sliding tooth plate 8 will drive the connecting rod 9 to extend, thereby changing the length of the blade 11 and realizing the adjustment of the planting depth to meet the needs of different crops. The left end of the screw 16 has a slot for the tool to rotate the screw 16.

[0032] Example 2: Refer to Figure 5 and Figure 6 A connecting rod 9 is fixedly connected to the top of the sliding toothed plate 8. A insertion groove 12 is opened on the outer side of the connecting rod 9. The insertion plate 13 fits into the insertion groove 12. A threaded hole 14 is opened on the inner wall of the insertion plate 13. A threaded hole 14 is opened on the top of the counterclockwise side of the outer wall of the connecting rod 9. Fasteners 10 are threadedly installed on the inner wall of the multiple threaded holes 14.

[0033] Specifically, during the cultivation process, the blade 11 may be damaged by hitting hard objects such as stones. In this case, it is necessary to use a tool to remove the fastener 10 from the threaded hole 14, then separate the connector plate 13 from the connector slot 12, so that the blade 11 is separated from the connecting rod 9. Finally, replace the blade 11 with a new one, align the connector plate 13 with the connector slot 12 and insert it, and then screw the fastener 10 into the threaded hole 14 to fasten the connector plate 13 and the connecting rod 9 together. The fastener 10 is an internal hex bolt. When the internal hex bolt is tightened into the threaded hole 14, it can be in the same plane as the connecting rod 9, so as not to affect the movement of the connecting rod 9.

[0034] Working principle: This utility model needs to be installed on a rotary tiller. The rotary tiller's operating room has a controller for the motor 3. When the tillage depth needs to be adjusted, the motor 3 is started. The motor 3 drives the rotating shaft 4 to rotate, which in turn drives the drive gear 5 to rotate, thereby driving the internal gear ring 6 to rotate, which in turn drives the long gear 7 to rotate. The long gear 7 drives the sliding tooth plate 8 to move outward or inward, thereby adjusting the extension length of the connecting rod 9. Then, by rotating the screw 16, the screw 16 drives the limiting plate 17 to move to the right, causing the limiting plate 17 to press against the outer wall of the connecting rod 9, thereby fixing the blade 11 and preventing the blade 11 from generating a large amount of pressure on the internal structure. This changes the length of the blade 11, thereby adjusting the tillage depth to meet the needs of different crops. During the tillage process, the blade 11 may be damaged. In this case, it is necessary to use tools to remove the fastener 10 first, then separate the connector plate 13 from the connector slot 12, so that the blade 11 is disengaged from the connecting rod 9. Finally, replace it with a new blade 11 and tighten the fastener 10.

[0035] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An external rotary cultivator, characterized in that, The device includes a cutter shaft (1), a rotating shaft (4) is rotatably connected to the inner wall of the cutter shaft (1), and multiple drive gears (5) are connected to the outer wall of the rotating shaft (4). The drive gears (5) are all connected to a sliding toothed plate (8) through a drive assembly. A connecting rod (9) is fixedly connected to the top of the sliding toothed plate (8). The outer wall of the connecting rod (9) is slidably connected to the inner wall of the cutter shaft (1). The connecting rod (9) is connected to the blade (11) through a bolt assembly. Screws (16) are threadedly connected to the four sides of the inner wall of the left end of the cutter shaft (1). A limit plate (17) is rotatably connected to the right end of the screw (16). The outer wall of the limit plate (17) is slidably connected to the inner wall of the cutter shaft (1). The connecting rod (9) is located on the inner wall of the limit plate (17).

2. An attachment for a rotocultivator according to claim 1, wherein: The drive assembly includes an internal gear ring (6) that is meshed with the outer diameter of the drive gear (5), and long gears (7) are meshed with the four sides of the inner diameter of the internal gear ring (6).

3. An attachment for a rotocultivator according to claim 2, wherein: The outer wall of the sliding toothed plate (8) is engaged with the right end of the outer wall of the long gear (7) on the clockwise side, and a limiting plate (15) is fixedly connected to one end of the inner side of the sliding toothed plate (8).

4. An attachment for a rotocultivator according to claim 3, wherein: The inner wall of the cutter shaft (1) is provided with multiple rotating grooves (2), the outer wall of the internal gear ring (6) is rotatably connected to the inner wall of the rotating groove (2), and the outer wall of the long gear (7) is rotatably connected to the inner wall of the rotating groove (2).

5. An attachment for a rotocultivator according to claim 1, wherein: The bolt assembly includes a plug plate (13) that is fixedly connected to one end of the inner side of the blade (11), and a plug groove (12) is provided on one end of the outer side of the connecting rod (9), and the plug plate (13) fits into the plug groove (12).

6. An attachment for a rotocultivator according to claim 5, wherein: The inner wall of the plug plate (13) is provided with threaded holes (14), and the top of the outer wall of the connecting rod (9) on the counterclockwise side is provided with threaded holes (14). Fasteners (10) are threadedly installed on the inner walls of the multiple threaded holes (14).

7. An attachment for a rotocultivator according to claim 1, wherein: The left end of the inner wall of the cutter shaft (1) is fixedly connected to a motor (3), and the left end of the rotating shaft (4) is fixedly connected to the drive end of the motor (3).

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