Stubble cleaning mechanism with adjustable line spacing

Abstract

The utility model relates to the field of agricultural machinery, in particular to a row spacing adjustable stubble cleaning mechanism which comprises a main transmission case, a branch transmission case is arranged on the lateral side of the main transmission case, cutter shafts are installed on the main transmission case and the branch transmission case, cutter heads are installed on the cutter shafts, and a transmission shaft which is connected with the branch transmission case and used for transmitting power is arranged on the lateral portion of the main transmission case. A length adjusting mechanism used for adjusting the length of the transmission shaft is installed on the transmission shaft, the transmission shaft comprises a first half shaft and a second half shaft, the length adjusting mechanism comprises an adjusting sleeve, the adjusting sleeve is rotationally installed on the first half shaft, external threads are arranged on the second half shaft, and internal threads capable of being matched with the external threads are arranged on the inner wall of the adjusting sleeve. A spline shaft is arranged at the end of the first half shaft, and internal spline teeth capable of being matched with the spline shaft are arranged in the second half shaft, the stubble cleaning mechanism with the adjustable line spacing achieves adjustability of the line spacing, improves working efficiency, ensures uniformity and depth of operation, and adapts to complex and changeable farmland environments.

Description

Technical Field

[0001] This utility model relates to the field of agricultural machinery, specifically to a stubble-removing mechanism with adjustable row spacing. Background Technology

[0002] In agricultural production, stubble removal before tillage is a crucial step in ensuring the smooth progress of subsequent sowing, transplanting, and other operations. As a key component of agricultural machinery, the performance of stubble removal devices directly affects tillage efficiency and the crop growth environment; its efficiency and quality directly impact subsequent sowing, growth, and final yield.

[0003] Traditional stubble removal mechanisms often suffer from fixed row spacing and inconvenient adjustment, which limits their adaptability to different soil conditions and operational needs. The equipment cannot be adapted to different soil textures, crop types, and planting requirements. Especially when facing complex and ever-changing farmland environments, traditional stubble removal mechanisms struggle to achieve ideal stubble removal results and operational efficiency, and therefore require improvement. Utility Model Content

[0004] The purpose of this invention is to provide a stubble-removing mechanism with adjustable row spacing that is simple in structure, easy to adjust, and can ensure operational stability in order to address the above problems.

[0005] To achieve the above objectives, this utility model discloses a stubble-cutting mechanism with adjustable row spacing, including a main transmission box. Its structural features are: a sub-transmission box is provided on the side of the main transmission box, and a cutter shaft is installed on both the main transmission box and the sub-transmission box. A cutter disc is installed on the cutter shaft. A transmission shaft for transmitting power is provided on the side of the main transmission box, and a length adjustment mechanism for adjusting the length of the transmission shaft is installed on the transmission shaft.

[0006] By installing a sub-transmission box on the side of the main transmission box, power is distributed and transmitted, enabling the stubble-clearing mechanism to cover a wider working area and improving work efficiency. Simultaneously, cutter shafts and cutter discs are installed on both the main and sub-transmission boxes, ensuring the uniformity and depth of stubble-clearing operations. Adjusting the length of the transmission shaft and the distance between the main and sub-transmission boxes allows for adjustment of the row spacing of the stubble-clearing mechanism, enhancing the equipment's adaptability to different farmlands.

[0007] The drive shaft is equipped with a length adjustment mechanism for adjusting the length of the drive shaft. The length adjustment mechanism allows the length of the drive shaft to be adjusted, thereby realizing the adjustability of the row spacing and enabling the equipment to adapt to the row spacing of different crops and farmland.

[0008] The drive shaft includes a first half-shaft and a second half-shaft. The length adjustment mechanism includes an adjusting sleeve, which is rotatably mounted on the first half-shaft. The second half-shaft has an external thread, and the inner wall of the adjusting sleeve has an internal thread that mates with the external thread. The adjusting sleeve and the second half-shaft are threaded together. By utilizing the engagement between the internal thread on the adjusting sleeve and the external thread on the second half-shaft, precise adjustment of the drive shaft length can be achieved. This engagement method is not only simple and reliable but also has a large adjustment range and is easy to operate.

[0009] The first half-shaft has a splined shaft at its end, and the second half-shaft has internal splined teeth that mate with the splined shaft. The splined shaft passes through the adjusting sleeve and is inserted into the second half-shaft. During the adjustment of the drive shaft length, the splined shaft and the second half-shaft remain engaged, thus ensuring the power transmission between the first and second half-shafts.

[0010] The first half-shaft is provided with a limiting edge, which is circular. The adjusting sleeve has a limiting cavity, and the limiting edge is rotatably installed in the limiting cavity. The limiting edge and the limiting cavity realize the rotational engagement between the adjusting sleeve and the first half-shaft, preventing the adjusting sleeve from shaking or shifting during rotation, and ensuring the stability and accuracy of the drive shaft when adjusting its length.

[0011] The adjusting sleeve is equipped with a screwing part for use with a hexagonal wrench. The screwing part has a hexagonal cross-section. The screwing part allows operators to easily rotate the adjusting sleeve using tools such as a hexagonal wrench, thereby adjusting the length of the drive shaft, improving work efficiency and ensuring the accuracy of the adjustment.

[0012] Multiple cutter discs are mounted on the cutter shaft, and these discs are spaced apart to ensure the comprehensiveness and depth of stubble removal operations.

[0013] The cutter head is equipped with multiple stubble-crushing blades arranged in a ring around the cutter head. This allows the stubble-crushing mechanism to more effectively break up crop residues, improve soil structure, and provide favorable conditions for subsequent sowing and growth.

[0014] Multiple sub-drive boxes are located on the left and right sides of the main drive box, with drive shafts installed between adjacent sub-drive boxes. This layout allows the stubble-clearing mechanism to cover the work area more evenly, improving work efficiency.

[0015] A universal joint is mounted on the drive shaft, and an input shaft connected to the vehicle body is mounted on the main transmission box. Power is received from the vehicle body through the input shaft and then transmitted to the various sub-transmission boxes through the drive shaft.

[0016] A slider is installed at the rear of the transmission box, and the slider is slidably mounted on the vehicle body. The vehicle body is equipped with a corresponding slide rail for the slider. When the length of the transmission shaft is adjusted, the slider slides on the slide rail to ensure the stability of the equipment operation.

[0017] In summary, the beneficial effects of this utility model are as follows: by changing the length of the transmission shaft and adjusting the distance between the main transmission box and the sub-transmission box, the row spacing of the stubble-cutting mechanism can be adjusted, thereby achieving adjustable row spacing, improving work efficiency, ensuring uniformity and depth of operation, and adapting to complex and ever-changing farmland environments. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 For along Figure 1 Schematic diagram of the cross-sectional structure along line AA;

[0020] Figure 3 This is a schematic diagram of the arrangement of the cutter head and stubble-cutting blades;

[0021] Figure 4 for Figure 3 A magnified schematic diagram of the local structure at point B;

[0022] Figure 5 This is a schematic diagram of the axial side structure of this utility model;

[0023] Figure 6 This is a cross-sectional view of the adjusting sleeve.

[0024] In the diagram: 1. Cutter shaft; 2. Sub-transmission box; 3. Transmission shaft; 4. Universal joint; 5. Main transmission box; 6. Input shaft; 7. First half-shaft; 8. Limiting edge; 9. Limiting cavity; 10. Adjusting sleeve; 11. Tightening part; 12. Second half-shaft; 13. Splined shaft; 14. Internal spline teeth; 15. Stubble cutter; 16. External thread; 17. Internal thread; 18. Internal thread; 19. Cutter disc; 20. Slider. Detailed Implementation

[0025] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0026] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0027] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0028] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" 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.

[0029] The following is a description of preferred embodiments of the present invention in conjunction with the accompanying drawings.

[0030] A stubble-cutting mechanism with adjustable row spacing includes a main drive box 5, a sub-drive box 2 located on the side of the main drive box 5, a cutter shaft 1 mounted on both the main drive box 5 and the sub-drive box 2, a cutter disc 19 mounted on the cutter shaft 1, and a drive shaft 3 connected to the sub-drive box 2 and used for transmitting power located on the side of the main drive box 5. A length adjustment mechanism for adjusting the length of the drive shaft 3 is mounted on the drive shaft 3. (See attached diagram) Figure 1 By setting a sub-transmission box 2 on the side of the main transmission box 5, power is distributed and transmitted, enabling the stubble-cutting mechanism to cover a wider working area and improving work efficiency. Simultaneously, cutter shafts 1 and cutter discs 19 are installed on both the main transmission box 5 and the sub-transmission box 2, ensuring the uniformity and depth of stubble-cutting operations. By adjusting the length of the transmission shaft 3, the distance between the main transmission box 5 and the sub-transmission box 2 is adjusted, thereby adjusting the row spacing of the stubble-cutting mechanism and enhancing the equipment's adaptability to different farmlands.

[0031] See attached document Figure 6A length adjustment mechanism is installed on the drive shaft 3 to adjust its length. This mechanism allows for adjustment of the drive shaft 3's length, thus enabling adjustable row spacing and adapting the equipment to different crops and farmland row spacing requirements. The drive shaft 3 includes a first half-shaft 7 and a second half-shaft 12. The length adjustment mechanism includes an adjustment sleeve 10, which is rotatably mounted on the first half-shaft 7. The second half-shaft 12 has an external thread 16, and the inner wall of the adjustment sleeve 10 has an internal thread that mates with the external thread 16. The adjustment sleeve 10 and the second half-shaft 12 are threadedly engaged. By utilizing the engagement between the internal thread on the adjustment sleeve 10 and the external thread 16 on the second half-shaft 12, precise adjustment of the drive shaft 3's length is achieved. This engagement method is not only simple and reliable but also has a wide adjustment range and is easy to operate. The end of the first half-shaft 7 has a splined shaft 13, and the interior of the second half-shaft 12 has internal splined teeth 14 that mate with the splined shaft 13. The splined shaft 13 passes through the adjustment sleeve 10 and is inserted into the second half-shaft 12. During the adjustment of the length of the drive shaft 3, the spline shaft 13 and the second half-shaft 12 always maintain a fit, thereby ensuring the power transmission between the first half-shaft 7 and the second half-shaft 12.

[0032] See attached document Figure 2 Appendix Figure 6 The first half-shaft 7 is provided with a limiting edge 8, which is circular. The adjusting sleeve 10 is provided with a limiting cavity 9, in which the limiting edge 8 is rotatably installed. The limiting edge 8 and the limiting cavity 9 enable the adjusting sleeve 10 to rotate with the first half-shaft 7, preventing the adjusting sleeve 10 from shaking or shifting during rotation, thus ensuring the stability and accuracy of the transmission shaft 3 when adjusting its length. The adjusting sleeve 10 is provided with a tightening part 11 for use with a hexagonal wrench, the tightening part 11 having a hexagonal cross-section. The tightening part 11 allows operators to easily rotate the adjusting sleeve 10 using tools such as a hexagonal wrench, thereby adjusting the length of the transmission shaft 3, improving work efficiency and ensuring the accuracy of the adjustment.

[0033] See attached document Figure 2 Multiple cutter discs 19 are mounted on the cutter shaft 1, spaced apart to ensure comprehensive and deep stubble removal. Multiple stubble removal blades 15 are mounted on each cutter disc 19, arranged in a ring around it. This allows the stubble removal mechanism to more effectively break up crop residues, improve soil structure, and provide favorable conditions for subsequent sowing and growth.

[0034] See attached document Figure 5Multiple sub-transmission boxes 2 are provided, located on the left and right sides of the main transmission box 5, respectively. A drive shaft 3 is installed between adjacent sub-transmission boxes 2. This layout allows the stubble-clearing mechanism to cover the working area more evenly, improving work efficiency. A universal joint 4 is installed on the drive shaft 3, and an input shaft 6 connected to the vehicle body is installed on the main transmission box 5. Power is received from the vehicle body through the input shaft 6 and then transmitted to each sub-transmission box 2 through the drive shaft 3. (See attached diagram) Figure 2 A slider 20 is installed at the rear of the transmission box 2, and the slider 20 is slidably mounted on the vehicle body. A corresponding slide rail is installed on the vehicle body. When the length of the transmission shaft 3 is adjusted, the slider 20 slides on the slide rail to ensure the stability of the equipment operation.

[0035] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A stubble-cutting mechanism with adjustable row spacing, comprising a main transmission box (5), characterized in that, The main transmission box (5) is provided with a sub-transmission box (2) on its side. Both the main transmission box (5) and the sub-transmission box (2) are equipped with a cutter shaft (1). The cutter shaft (1) is equipped with a cutter disc (19). The side of the main transmission box (5) is provided with a transmission shaft (3) that connects to the sub-transmission box (2) and is used to transmit power. The transmission shaft (3) is equipped with a length adjustment mechanism for adjusting the length of the transmission shaft (3).

2. The stubble-eliminating mechanism with adjustable row spacing as described in claim 1, characterized in that, The transmission shaft (3) includes a first half shaft (7) and a second half shaft (12). The length adjustment mechanism includes an adjustment sleeve (10). The adjustment sleeve (10) is rotatably mounted on the first half shaft (7). The second half shaft (12) is provided with an external thread (16). The inner wall of the adjustment sleeve (10) is provided with an internal thread (18) that can cooperate with the external thread (16). The adjustment sleeve (10) is threadedly engaged with the second half shaft (12).

3. The stubble-eliminating mechanism with adjustable row spacing as described in claim 2, characterized in that, The first half-shaft (7) has a spline shaft (13) at its end, and the second half-shaft (12) has an internal spline tooth (14) that can cooperate with the spline shaft (13). The spline shaft (13) passes through the adjusting sleeve (10) and is inserted into the second half-shaft (12).

4. The stubble-eliminating mechanism with adjustable row spacing as described in claim 2, characterized in that, The first half-shaft (7) is provided with a limiting edge (8), which is circular. The adjusting sleeve (10) is provided with a limiting cavity (9), and the limiting edge (8) is rotatably installed in the limiting cavity (9).

5. The stubble-eliminating mechanism with adjustable row spacing as described in claim 2, characterized in that, The adjusting sleeve (10) is provided with a screwing part (11) for cooperating with a hexagonal wrench, and the screwing part (11) has a hexagonal cross section.

6. The stubble-removing mechanism with adjustable row spacing as described in claim 1, characterized in that, Multiple cutter discs (19) are mounted on the cutter shaft (1), and the multiple cutter discs (19) are spaced apart on the cutter shaft (1).

7. The stubble-eliminating mechanism with adjustable row spacing as described in claim 1, characterized in that, The cutter head (19) is equipped with stubble-removing blades (15), and there are multiple stubble-removing blades (15) arranged around the cutter head (19).

8. The stubble-eliminating mechanism with adjustable row spacing as described in claim 1, characterized in that, The sub-transmission box (2) is provided in multiple ways. The multiple sub-transmission boxes (2) are located on the left and right sides of the main transmission box (5) respectively, and a transmission shaft (3) is installed between two adjacent sub-transmission boxes (2).

9. The stubble-eliminating mechanism with adjustable row spacing as described in claim 1, characterized in that, A universal joint (4) is installed on the drive shaft (3), and an input shaft (6) connected to the vehicle body is installed on the main transmission box (5).

10. The stubble-eliminating mechanism with adjustable row spacing as described in claim 1, characterized in that, The rear of the sub-transmission box (2) is equipped with a slider (20), which is slidably mounted on the vehicle body.

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