Variable-speed transmission structure of rotary sowing machine

Abstract

The utility model relates to the technical field of rotary sowing machines, and discloses a variable speed transmission structure of a rotary sowing machine, which comprises a side plate, a gear transmission case is arranged on the side surface of the side plate, a transmission case is arranged on the side surface of the side plate, an input gear and an output gear are arranged on two sides in the transmission case, a second output gear is fixedly connected to the inner side of the output gear, and a second gear is installed on the side face of the input gear through a first gear in an engaged mode. According to the variable-speed transmission structure of the rotary sowing machine, by rotating a gear handle, the gear handle drives the position of a shifting fork to be transversely adjusted, meanwhile, the shifting fork drives a joint sleeve to move to the outer portion of a transition sleeve and the outer portion of a fixing sleeve, and in other words, the joint sleeve drives a sixth gear and a fifth gear to synchronously rotate or drives a seventh gear and the fifth gear to synchronously rotate; and meanwhile, the equipment adopts gear transmission, so that the stability and the convenience during transmission are improved.

Description

Technical Field

[0001] This utility model relates to the field of rotary seeding technology, specifically to a variable speed transmission structure for a rotary seeding machine. Background Technology

[0002] To achieve mechanized agricultural operations, rotary tillers are used in conjunction with tractors to till and harrow farmland. They have a strong ability to break up soil, resulting in a flat surface after tilling. They can also chop up stubble buried underground, providing a good seedbed for later sowing.

[0003] Typically, after rotary tillage, the land needs to be leveled using a roller. However, conventional transmission mechanisms control the roller's rotation speed to be uniform, resulting in uneven roller speeds when moving to different surfaces. This leads to uneven pressure and either overly hard or overly loose soil after leveling, making it difficult to sow seeds. To address this, we propose a variable speed transmission structure for rotary seeders. Utility Model Content

[0004] To address the shortcomings of existing rotary seeders' variable speed transmission structures, this invention provides a variable speed transmission structure for rotary seeders. By rotating the gear lever, the gear transmission mechanism can be changed, thereby adjusting the rotation speed of the first and second press rollers. This allows for adjustment of rotation efficiency according to different rotary tillage requirements, thus solving the problems mentioned in the background art.

[0005] This utility model provides the following technical solution: a variable speed transmission structure for a rotary seeder, including a side plate, a gear transmission box installed on the side of the side plate, an input gear and an output gear installed on both sides inside the transmission box, a second output gear fixedly connected to the inner side of the output gear, a second gear installed on the side of the input gear through meshing with a first gear, a third gear and a fourth gear fixedly connected to one side of the second gear via a connecting column, a rotating shaft fixedly connected to the middle of the transmission box, a fifth gear fixedly connected to one end of the rotating shaft, a fixed sleeve fixedly connected to the middle of the rotating shaft, a first sliding sleeve and a second sliding sleeve sequentially movably sleeved on both sides of the fixed sleeve outside the rotating shaft, a sixth gear and a seventh gear sequentially snapped onto the outside of the first and second sliding sleeves, a set of transition sleeves fixedly connected to the inner sides of the sixth and seventh gears, an adjustment mechanism installed outside the transmission box, the adjustment mechanism controlling the internal structure of the transmission box to perform speed change processing, and an eighth gear and a ninth gear meshing between the fifth gear and the output gear.

[0006] Preferably, a transmission mechanism is installed on the inner side of the side plate, a transmission device is installed on the side of the transmission mechanism, the transmission device is installed inside the gear transmission box, a rotary tillage structure is installed at the lower end of the side plate, and the two ends of the rotary tillage structure are connected to the inner side of the gear transmission box.

[0007] Preferably, a transition gear set is installed on the inner side of the side plate, a first pressing wheel and a second pressing wheel are installed inside the side plate, the second output gear is connected to the first pressing wheel, and a first output gear is fixedly connected to the inner side of the input gear. The first output gear is connected inside the transition gear set.

[0008] Preferably, the adjustment mechanism includes a gear lever, which is fixedly and movably mounted on the upper part of the transmission box. A guide rod is fixedly connected to one side of the lower part of the gear lever, and a shift fork is fixedly connected to the lower end of the guide rod. The guide rod is installed inside the transmission box.

[0009] Preferably, the inner side of the fork is clamped with a connecting sleeve, the transition sleeve is located on both sides of the fixed sleeve, and the connecting sleeve is sleeved between a set of transition sleeves and the fixed sleeve.

[0010] Preferably, the third gear meshes with the sixth gear, the fifth gear meshes with the eighth gear, and the fourth gear meshes with the seventh gear.

[0011] Preferably, bearings are installed at both ends of the rotating shaft, and the bearings are installed in the middle of the transmission box.

[0012] Compared with existing transmission structures, this utility model has the following advantages:

[0013] 1. The variable speed transmission structure of this rotary seeder allows for lateral adjustment of the position of the shift fork by rotating the shift lever. Simultaneously, the shift fork moves the connecting sleeve to the outside of the transition sleeve and the fixed sleeve. This causes the connecting sleeve to drive the sixth and fifth gears to rotate synchronously, or the connecting sleeve to drive the seventh and fifth gears to rotate synchronously. This enables the equipment to change speeds. Furthermore, the use of gear transmission improves the stability and convenience of transmission.

[0014] 2. The variable speed transmission structure of the rotary seeder, by starting the transmission machine, the synchronous gear transmission box of the transmission machine drives the rotary tillage structure and the transition gear set to rotate. When the rotary tillage structure rotates, it performs rotary tillage on the land. At the same time, the gear transmission box provides power to the rotation of the transmission box through the transition gear set. In this application, multiple structures can be rotated simultaneously by a single drive device, which reduces the space required for the equipment and improves the driving effect. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the main structure of the present utility model;

[0016] Figure 2 This is a side view of the structure of this utility model;

[0017] Figure 3 This is a partial rear view structural diagram of the present invention;

[0018] Figure 4 This is a partially enlarged structural diagram of the transmission box of this utility model;

[0019] Figure 5 This is an enlarged structural schematic diagram of the transmission mechanism of this utility model;

[0020] Figure 6 This is a partially enlarged structural diagram of the pull fork of this utility model;

[0021] Figure 7 This is a cross-sectional view of the rotating shaft of this utility model.

[0022] In the diagram: 1. Side plate; 2. Transmission mechanism; 3. Rotary tillage structure; 4. Gear transmission box; 5. Transition gear set; 6. Transmission box; 7. First press wheel; 8. Second press wheel; 9. First output gear; 10. Second output gear; 11. Input gear; 12. Output gear; 13. First gear; 14. Second gear; 15. Third gear; 16. Fourth gear; 17. Rotating shaft; 18. Bearing; 19. Fifth gear; 20. First sliding sleeve; 21. Second sliding sleeve; 22. Sixth gear; 23. Seventh gear; 24. Transition sleeve; 25. Fixed sleeve; 26. Gear lever; 27. Guide rod; 28. Shift fork; 29. ​​Engaging sleeve; 30. Eighth gear; 31. Ninth gear. Detailed Implementation

[0023] 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.

[0024] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7A variable speed transmission structure for a rotary seeder includes a side plate 1. A gear transmission box 4 is mounted on the side of the side plate 1. By starting a transmission motor 2, the transmission motor 2 synchronously drives the rotary tillage structure 3 to perform rotary tillage on the ground via the gear transmission box 4. A transmission box 6 is mounted on the side of the side plate 1. A transition gear set 5 drives the gear transmission box 4 and the transmission box 6 for transmission. An input gear 11 and an output gear 12 are mounted on both sides inside the transmission box 6. A second output gear 10 is fixedly connected to the inner side of the output gear 12. The second output gear 10 is connected to a first press wheel 7, that is, the second output gear 10 drives the first press wheel 7 to rotate synchronously. A second gear 14 is mounted on the side of the input gear 11 through meshing with a first gear 13. A third gear 15 and a fourth gear 16 are fixedly connected to one side of the second gear 14 via a connecting column. A rotating shaft 17 is fixedly connected to the middle of the transmission box 6. A fifth gear 16 is fixedly connected to one end of the rotating shaft 17. A fixed sleeve 25 is fixedly connected to the middle of the gear 19 and the rotating shaft 17. A first sliding sleeve 20 and a second sliding sleeve 21 are sequentially movably sleeved on the outside of the rotating shaft 17 and on both sides of the fixed sleeve 25. A sixth gear 22 and a seventh gear 23 are sequentially snapped onto the outside of the first sliding sleeve 20 and the second sliding sleeve 21. A set of transition sleeves 24 are fixedly connected to the inner side of the sixth gear 22 and the seventh gear 23. An adjustment mechanism is installed on the outside of the transmission box 6. The adjustment mechanism drives the position of the engagement sleeve 29 to be adjusted. When the engagement sleeve 29 moves to the outside of the transition sleeve 24 and the fixed sleeve 25, the rotation of the sixth gear 22 or the seventh gear 23 can be adjusted. The adjustment mechanism controls the internal structure of the transmission box 6 to perform speed change processing. An eighth gear 30 and a ninth gear 31 are meshed between the fifth gear 19 and the output gear 12. The eighth gear 30 and the ninth gear 31 assist in driving the output gear 12 to rotate synchronously.

[0025] Please see Figure 1 A transmission machine 2 is installed on the inner side of the side plate 1, and a transmission device is installed on the side of the transmission machine 2. The transmission device is installed inside the gear transmission box 4. A rotary tillage structure 3 is installed at the lower end of the side plate 1. The two ends of the rotary tillage structure 3 are connected to the inner side of the gear transmission box 4. By starting the rotary tillage structure 3, the rotary tillage structure 3 drives the gear transmission box 4 to rotate through the transmission device. The rotary tillage structure 3 is installed at the lower end of the gear transmission box 4, so the rotation of the rotary tillage structure 3 can be controlled. During the rotation of the rotary tillage structure 3, the land can be rotary tilled.

[0026] Please see Figure 1A transition gear set 5 is installed on the inner side of the side plate 1. A first pressing wheel 7 and a second pressing wheel 8 are installed inside the side plate 1. A second output gear 10 is connected to the first pressing wheel 7. A first output gear 9 is fixedly connected to the inner side of the input gear 11. The first output gear 9 is connected inside the transition gear set 5. The transition gear set 5 is installed on the inner side of the side plate 1. At the same time, one end of the transition gear set 5 is installed on one end of the gear transmission box 4, and the other end of the transition gear set 5 is installed inside the transmission box 6. The transmission box 6 drives the first output gear 9 installed inside the transition gear set 5. When the gear transmission box 4 rotates, the input gear 11 is driven to rotate synchronously through the transmission of the transition gear set 5.

[0027] Please see Figure 6 The adjustment mechanism includes a gear lever 26, which is fixedly and movably mounted on the upper part of the transmission box 6. A guide rod 27 is fixedly connected to one side of the lower part of the gear lever 26, and a shift fork 28 is fixedly connected to the lower end of the guide rod 27. The guide rod 27 is installed inside the transmission box 6. By rotating the gear lever 26, the gear lever 26 drives the shift fork 28 to adjust its position laterally. At the same time, the guide rod 27 limits the movement trajectory of the shift fork 28, thereby driving the shift fork 28 to adjust its position outside the fixed sleeve 25.

[0028] Please see Figure 6 The inner side of the shift fork 28 is clamped with a connecting sleeve 29. A transition sleeve 24 is located on both sides of the fixed sleeve 25. The connecting sleeve 29 is sleeved between the connection points of the transition sleeve 24 and the fixed sleeve 25. The position of the shift fork 28 is adjusted, causing the connecting sleeve 29 to move. When the connecting sleeve 29 moves to the outside of the connection point between the transition sleeve 24 and the fixed sleeve 25, the transition sleeve 24 and the fixed sleeve 25 rotate with the assistance of the connecting sleeve 29. When the connecting sleeve 29 moves to the transition sleeve 24 installed inside the sixth gear 22, the third gear 15 rotates, and the third gear 15 meshes with the sixth gear 22. The fixed sleeve 25 drives the rotating shaft 17 to rotate synchronously, and the guide rod 27 drives the fifth gear 19 to rotate synchronously. The fifth gear 19 meshes with the eighth gear 30, which controls the rotation of the second output gear 10. At the same time, when the engaging sleeve 29 moves to the outside of the transition sleeve 24 installed inside the seventh gear 23, the third gear 15 rotates and drives the fourth gear 16 to rotate. The fourth gear 16 meshes with the seventh gear 23. At the same time, the seventh gear 23 drives the fifth gear 19 to rotate through the rotating shaft 17. The fifth gear 19 drives the second output gear 10 to rotate. Thus, the speed of the rotary seeder can be adjusted during the rotation of the gear lever 26.

[0029] Please see Figure 5The third gear 15 meshes with the sixth gear 22, the fifth gear 19 meshes with the eighth gear 30, and the fourth gear 16 meshes with the seventh gear 23. Through the interaction between the third gear 15 and the sixth gear 22, that is, when the fifth gear 19 and the sixth gear 22 rotate synchronously, the second output gear 10 can be driven to rotate. The fourth gear 16 meshes with the seventh gear 23. Adjusting the position of the gear lever 26 will drive the seventh gear 23 and the fifth gear 19 to rotate synchronously.

[0030] Please see Figure 7 Bearings 18 are installed at both ends of the rotating shaft 17. The bearings 18 are installed in the middle of the transmission box 6. The bearings 18 are installed on the side of the rotating shaft 17 and on the inside of the transmission box 6. With the assistance of the bearings 18, the frictional resistance during equipment rotation is reduced, thereby improving the equipment rotation efficiency.

[0031] Working principle: When in use, start the transmission machine 2. The transmission machine 2 drives the gear transmission box 4 to rotate through the transmission device. The gear transmission box 4 drives the rotary tillage structure 3 to rotate. The gear transmission box 4 performs rotary tillage on the land. At the same time, the transition gear set 5 is installed on the inner side of the side plate 1. The gear transmission box 4 drives the transition gear set 5 to rotate synchronously. The first output gear 9 is installed inside the transition gear set 5. That is, the transition gear set 5 drives the gear installed inside the transmission box 6 to rotate synchronously.

[0032] In the first embodiment, rotating the gear lever 26 causes the shift fork 28 to move toward the sixth gear 22. The guide rod 27 limits the movement trajectory of the shift fork 28, that is, the shift fork 28 causes the engagement sleeve 29 to move between the transition sleeve 24 and the fixed sleeve 25 installed near the outside of the sixth gear 22. When the input gear 11 rotates, the input gear 11 drives the first gear 13 to rotate, the first gear 13 drives the second gear 14 to rotate, the second gear 14 drives the third gear 15 to rotate, the fixed sleeve 25 meshes with the sixth gear 22, the sixth gear 22 drives the fifth gear 19 to rotate synchronously, and at the same time, the fifth gear 19 drives the output gear 12 to rotate through the eighth gear 30 and the ninth gear 31, and the output gear 12 drives the second output gear 10 to rotate.

[0033] Example 2: Rotate the gear lever 26 to control the shift fork 28 to face the seventh gear 23. The input gear 11 drives the second gear 14 to rotate through the first gear 13. The second gear 14 drives the fourth gear 16 to rotate. The fourth gear 16 meshes with the seventh gear 23. The seventh gear 23 drives the fifth gear 19 to rotate through the rotating shaft 17. The fifth gear 19 drives the output gear 12 to rotate through the eighth gear 30 and the ninth gear 31.

[0034] The speed change of the equipment can be achieved through Embodiment 1 and Embodiment 2. When the output gear 12 drives the second output gear 10 to rotate, the second output gear 10 drives the first pressure wheel 7 to rotate, thereby realizing the speed change of the equipment.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A variable speed transmission structure for a rotary seeder, comprising a side plate (1), a gear transmission box (4) mounted on the side of the side plate (1), and a transmission box (6) mounted on the side of the side plate (1), characterized in that: An input gear (11) and an output gear (12) are installed on both sides inside the transmission box (6). A second output gear (10) is fixedly connected to the inner side of the output gear (12). A second gear (14) is installed on the side of the input gear (11) through meshing with a first gear (13). A third gear (15) and a fourth gear (16) are fixedly connected to one side of the second gear (14) via a connecting column. A rotating shaft (17) is fixedly connected to the middle of the transmission box (6). A fifth gear (19) is fixedly connected to one end of the rotating shaft (17). A fixing sleeve (25) is fixedly connected to the middle of the rotating shaft (17). The first sliding sleeve (20) and the second sliding sleeve (21) are sequentially movably sleeved on the outside of the rotating shaft (17) and on both sides of the fixed sleeve (25). The sixth gear (22) and the seventh gear (23) are sequentially snapped onto the outside of the first sliding sleeve (20) and the second sliding sleeve (21). A set of transition sleeves (24) are fixedly connected to the inner side of the sixth gear (22) and the seventh gear (23). An adjustment mechanism is installed on the outside of the transmission box (6). The adjustment mechanism controls the internal structure of the transmission box (6) to perform speed change processing. The eighth gear (30) and the ninth gear (31) are meshed between the fifth gear (19) and the output gear (12).

2. The variable speed transmission structure of a rotary seeder according to claim 1, characterized in that: A transmission mechanism (2) is installed on the inner side of the side plate (1), and a transmission device is installed on the side of the transmission mechanism (2). The transmission device is installed inside the gear transmission box (4). A rotary tillage structure (3) is installed at the lower end of the side plate (1), and the two ends of the rotary tillage structure (3) are connected to the inner side of the gear transmission box (4).

3. The variable speed transmission structure of a rotary seeder according to claim 1, characterized in that: A transition gear set (5) is installed on the inner side of the side plate (1). A first pressing wheel (7) and a second pressing wheel (8) are installed inside the side plate (1). The second output gear (10) is connected to the first pressing wheel (7). A first output gear (9) is fixedly connected to the inner side of the input gear (11). The first output gear (9) is connected inside the transition gear set (5).

4. The variable speed transmission structure of a rotary seeder according to claim 1, characterized in that: The adjustment mechanism includes a gear lever (26), which is fixedly and movably installed on the upper part of the transmission box (6). A guide rod (27) is fixedly connected to one side of the lower part of the gear lever (26), and a shift fork (28) is fixedly connected to the lower end of the guide rod (27). The guide rod (27) is installed inside the transmission box (6).

5. The variable speed transmission structure of a rotary seeder according to claim 4, characterized in that: The inner side of the fork (28) is clamped with a connecting sleeve (29), the transition sleeve (24) is located on both sides of the fixed sleeve (25), and the connecting sleeve (29) is sleeved between a set of transition sleeves (24) and fixed sleeves (25).

6. The variable speed transmission structure of a rotary seeder according to claim 1, characterized in that: The third gear (15) meshes with the sixth gear (22), the fifth gear (19) meshes with the eighth gear (30), and the fourth gear (16) meshes with the seventh gear (23).

7. The variable speed transmission structure of a rotary seeder according to claim 1, characterized in that: Bearings (18) are installed at both ends of the rotating shaft (17), and the bearings (18) are installed in the middle of the transmission box (6).

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