Driving device for mini-tiller
By using a dual-mode series torque adjustment drive device in the micro-tiller, using planetary reduction components and bevel gear transmission, the problem of insufficient output torque of the existing micro-tiller drive mechanism is solved, and efficient power output and compact structure is achieved .
Patent Information
- Application Number
- CN202421498797.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-27
- Publication Date
- 2025-02-14
- Estimated Expiration
- 2034-06-27
AI Technical Summary
The output torque of the existing micro-tillers is insufficient, resulting in low power and low tillage work efficiency.
The drive device that uses dual-mode series torque adjustment includes a motor and a transmission component. The transmission component is composed of a planetary reduction assembly and bevel gear. It can achieve efficient torque adjustment through three sets of planetary reduction gear sets and bevel gears.
The torque adjustment range of the drive device is greatly improved, and it can output high torque power, ensure the normal operation of the micro-tiller, and prevent damage through the lock protection function.
Smart Images
Figure CN222479350U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a driving device for a micro-tillage machine. Background Art
[0002] A micro-tillage machine is a small agricultural tool, which has important production significance in areas where arable land resources are scarce and scattered. However, in the prior art, the power of the micro-tillage machine is provided by an internal combustion engine, which makes it insufficient in environmental protection. After all, the internal combustion engine converts chemical energy into mechanical energy by burning fuel, and releases a large amount of carbon dioxide at the same time. Although it has inherent advantages in terms of flexibility in use, with the adjustment of social energy structure, the proportion of fossil energy as energy for industrial production and life will gradually decrease, which will affect the development of micro-tillage machines. In order to respond to the national call for energy conservation and emission reduction, the prior art provides a micro-tillage machine that can be driven by electricity, and its driving mechanism mainly includes a motor, a turbine and a worm, the worm is directly connected to the rotating shaft of the motor, the worm is meshed with the turbine, and the transmission shaft is connected to the turbine, and the transmission shaft outputs power outward. The driving mechanism realizes the electrification of the micro-tillage machine, and replaces the previous internal combustion engine drive with a motor drive. Because the driving mechanism is a direct drive structure, although there is a certain torque adjustment function between the turbine and the worm, the torque adjustment range of the turbine and the worm is small and the transmission efficiency is low. The hardness of the ground of the farmland varies with the water content, degree of compaction, and amount of crop residues, but the ground hardness of the farmland is generally higher when it is ready for cultivation; when the power torque provided by the driving mechanism is insufficient, it is very easy to cause the working parts (such as blades) to sink into the ground and cannot get out. As a result, the existing micro-tillage machines that obtain power through motors generally have the disadvantages of low power and low farming efficiency. Summary of the invention
[0003] The technical problem to be solved by the utility model is how to improve the output torque of a driving mechanism, thereby obtaining a driving device for a micro-tillage machine.
[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions: the micro-tillage machine driving device comprises a motor and a transmission component, the transmission component comprises a housing, a planetary reduction assembly, and an output assembly, the planetary reduction assembly and the output component are both installed in the housing, the motor is installed outside the housing, the motor is connected to the output assembly through the planetary reduction assembly, the planetary reduction assembly comprises a planetary reduction gear group I, a planetary reduction gear group II, and a planetary reduction gear group III, the planetary reduction gear group I, the planetary reduction gear group II, and the planetary reduction gear group III are sequentially connected in series, the output assembly comprises a transmission shaft and an output shaft, the transmission shaft and the output shaft are both movably installed on the housing, the end of the output shaft is located outside the housing and serves as the output end of the micro-tillage machine driving device, the transmission shaft and the output shaft are connected through a bevel gear, the motor is connected to the planetary reduction gear group I, and the planetary reduction gear group III is connected to the transmission shaft.
[0005] The torque adjustment range of the worm gear in the prior art is very limited, while the technical solution completely gets rid of the adjustment idea of the worm gear and adopts a dual-mode series torque adjustment idea. The dual mode here refers to the planetary reduction assembly and the output assembly built on the bevel gear. The planetary reduction assembly is not a single set of planetary reduction gears, but three sets of planetary reduction gears, through which the torque of the power output by the motor can be adjusted to a higher value; the output assembly is internally driven by bevel gears, which makes the power transmission process of the output assembly have a one-way characteristic, that is, it can only be transmitted from one end to the other end, thereby preventing two-way transmission or preventing the risk of damage to the planetary reduction assembly caused by the planetary reduction group directly outputting power to the outside, forming a locking protection function. In addition to the function of protecting the planetary reduction assembly and further increasing the torque, the output assembly also has the function of facilitating the arrangement of the output end position of the drive device for the micro-tiller. The planetary reduction assembly and the output assembly are distributed one by one on the center line of the motor's rotating shaft. This arrangement structure allows the entire micro-tiller drive device to have an obvious length feature. If the output end of the micro-tiller drive device is also arranged on the center line of the motor's rotating shaft, the entire micro-tiller drive device will have a longer size feature, which is not conducive to the compactness of the micro-tiller structure. The output shaft of the output assembly can be arranged perpendicular to the center line of the motor's rotating shaft, so that the output end can be constructed in the width direction of the entire micro-tiller drive device, which is conducive to the compactness of the micro-tiller structure.
[0006] The preferred structure of the planetary reduction assembly is as follows: the planetary reduction gear set I includes an input gear, a planetary gear I, a gear frame I, a gear ring I, and a pressure ring I. The input gear is installed on the rotating shaft of the motor, and the center line of the rotating shaft coincides with the center line of the transmission shaft. The gear ring I is movably connected to the housing and is relatively stationary in the circumferential direction around the center line of the transmission shaft. The planetary gear I is movably installed on the gear frame I, and the planetary gear I is rotatable on the gear frame I. The planetary gear I and the input gear are both located inside the gear ring I, and the gear ring I and the input gear are both meshed with the planetary gear I. The pressure ring I is located on one side of the gear ring I, and the gear frame I is located on the other side of the gear ring I. The pressure ring I is located between the housing and the planetary gear I. The gear frame I is provided with an output gear I. The planetary reduction gear set II includes planetary gear II, a gear frame II, a gear ring II, and a pressure ring II. The gear ring II is movably connected to the housing and is relatively stationary in the circumferential direction around the center line of the transmission shaft. The planetary gear II is movably installed on the gear frame II. The planetary gear II is The gear frame II is rotatable, the planetary gear II and the output gear I are both located inside the gear ring II, and the gear ring II and the output gear I are both meshed with the planetary gear II, the pressure ring II is located on one side of the gear ring II, the gear frame II is located on the other side of the gear ring II, the pressure ring II is located between the gear frame I and the planetary gear II, the gear frame II is provided with an output gear II, the planetary reduction gear set III comprises planetary gear III, a gear frame III, a gear ring III, and a pressure ring III, the gear ring III is movably connected to the housing and is relatively stationary in the circumferential direction around the center line of the transmission shaft, the planetary gear III is movably mounted on the gear frame III, the planetary gear III is rotatable on the gear frame III, the planetary gear III and the output gear II are both located inside the gear ring III, and the gear ring III and the output gear II are both meshed with the planetary gear III, the pressure ring III is located on one side of the gear ring III, the gear frame III is located on the other side of the gear ring III, the pressure ring III is located between the gear frame II and the planetary gear III, the gear frame III is provided with a connecting hole, the transmission shaft is embedded in the connecting hole, and the transmission shaft is fixedly connected to the gear frame III. The planetary reduction assembly structure has the advantages of compact structure, convenient assembly and large torque adjustment range.
[0007] In order to obtain a fixed installation spacing between each planetary reduction gear set, the planetary reduction gear set I also includes a mounting ring I, which is movably connected to the housing and is relatively stationary in the circumferential direction around the center line of the transmission shaft, and the mounting ring I is located between the gear ring I and the gear ring II. The planetary reduction gear set II also includes a mounting ring II, which is movably connected to the housing and is relatively stationary in the circumferential direction around the center line of the transmission shaft, and the mounting ring II is located between the gear ring II and the gear ring III.
[0008] The preferred connection structure between each gear rack and mounting ring and the shell is as follows: a limit groove is provided in the shell, and the extension direction of the limit groove is parallel to the center line of the transmission shaft; the outer sides of the gear ring I, gear ring II, gear ring III, mounting ring I and mounting ring I are all provided with limit protrusions, and the limit protrusions are embedded in the limit grooves.
[0009] In order to make the planetary reduction assembly have the unidirectional characteristic of power transmission direction, the number of planetary gears I and II is greater than the number of planetary gears III, so that it is difficult to drive the planetary reduction assembly to operate at the planetary reduction gear set III. In this way, the power transmission direction is encouraged from the planetary reduction gear set I to the planetary reduction gear set II and then to the planetary reduction gear set III.
[0010] The utility model adopts the above technical solution: the micro-tillage machine driving device greatly improves the torque adjustment range through dual-mode series torque adjustment, and can output high-torque power to the outside, providing power guarantee for the normal operation of the micro-tillage machine. By limiting the power transmission direction, it has a locking protection function to prevent the micro-tillage machine driving device from being damaged by the external force driving the micro-tillage machine driving device in the reverse direction. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] The present invention will be further described below in conjunction with the accompanying drawings and specific implementation methods.
[0012] Figure 1 This is a schematic diagram of the structure of a driving device for a micro-tillage machine of the utility model;
[0013] Figure 2 for Figure 1 A partial enlarged view of
[0014] Figure 3 This is a schematic structural diagram of a planetary reduction assembly and an output assembly of a driving device for a micro-tillage machine of the utility model after being assembled;
[0015] Figure 4 It is a schematic assembly diagram of a planetary reduction gear set I of a driving device for a micro-tillage machine of the utility model;
[0016] Figure 5 It is a schematic assembly diagram of a planetary reduction gear set II of a driving device for a micro-tillage machine of the utility model;
[0017] Figure 6 The utility model is a schematic diagram of the assembly of a planetary reduction gear set III of a driving device for a micro-tillage machine. DETAILED DESCRIPTION
[0018] like Figure 1 , 2As shown in , 3, 4, 5, and 6, the driving device for a micro-tillage machine is a power device in the micro-tillage machine, which includes a motor 1 and a transmission component, which are combined together. Among them, the motor 1 is a power generation unit for converting electrical energy into mechanical energy; the transmission component is used to adjust the torque of the output power.
[0019] The transmission component includes a housing 2, a planetary reduction assembly 3, and an output assembly 4. The housing 2 is formed by closing two symmetrical parts. The planetary reduction assembly 3 and the output component are installed in the housing 2; the motor 1 is installed outside the housing 2. The planetary reduction assembly 3 includes a planetary reduction gear set I5, a planetary reduction gear set II6, and a planetary reduction gear set III7. The planetary reduction gear set I5, the planetary reduction gear set II6, and the planetary reduction gear set III7 are connected in series in sequence. The rotating shaft of the motor 1 extends into the interior of the planetary reduction gear set I5 of the planetary reduction assembly 3 and is connected to the planetary reduction gear set I5. After the motor 1 rotates, it can drive the planetary reduction assembly 3 to operate. The output assembly 4 includes a transmission shaft 8 and an output shaft 9. The transmission shaft 8 and the output shaft 9 are both movably installed on the housing 2 through bearings, and they can both rotate. The center line of the transmission shaft 8 coincides with the center line of the rotating shaft of the motor 1. The end of the output shaft 9 is located outside the housing 2 and serves as the output end of the driving device for the micro-tiller, which is used to output power to the outside. One end of the transmission shaft 8 is connected to the planetary reduction gear set III 7, and the other end of the transmission shaft 8 is installed with a bevel gear; the output shaft 9 is also installed with a bevel gear, and the transmission shaft 8 and the output shaft 9 are connected through the bevel gear. The rotation of the transmission shaft 8 can drive the output shaft 9 to rotate. Thus, the motor 1 is connected to the output assembly 4 through the planetary reduction assembly 3.
[0020] The planetary reduction gear set I5 includes an input gear 10, a planetary gear I11, a gear frame I12, a gear ring I13, a pressure ring I14, and a mounting ring I15. The input gear 10 is mounted on the rotating shaft of the motor 1. The gear ring I13 is movably connected to the housing 2 and relatively stationary in the circumferential direction around the center line of the transmission shaft 8, and the mounting ring I15 is movably connected to the housing 2 and relatively stationary in the circumferential direction around the center line of the transmission shaft 8; this is because the housing 2 is provided with a ring-shaped spacing distribution around the center line of the transmission shaft 8, and the extension direction of the limiting groove is parallel to the center line of the transmission shaft 8. The outer sides of the gear ring I13 and the mounting ring I15 are provided with limiting protrusions 17, and the limiting protrusions 17 are embedded in the limiting grooves, so that the gear ring I13 and the mounting ring I15 can slide along the limiting grooves in a direction parallel to the center line of the transmission shaft 8, but cannot rotate relative to the housing 2 in the circumferential direction around the center line of the transmission shaft 8, that is, the two are relatively stationary.
[0021] The gear frame Ⅰ12 is composed of a disc body, a mounting shaft, and an output gear Ⅰ16. The disc body is a disc-shaped structure; the mounting shaft is distributed on one side of the disc body and is fixedly connected to the disc body; the output gear Ⅰ16 is located on the other side of the disc body, and the center line of the output gear Ⅰ16, the center line of the disc body, and the center line of the transmission shaft 8 coincide. The planetary gear Ⅰ11 is movably mounted on the gear frame Ⅰ12, and after installation, the planetary gear Ⅰ11 can rotate on the gear frame Ⅰ12; the gear frame Ⅰ12 is installed with four planetary gears Ⅰ11. The planetary gear Ⅰ11 and the input gear 10 are both located inside the gear ring Ⅰ13, and the input gear 10 is also located between the planetary gears Ⅰ11, and the gear ring Ⅰ13 and the input gear 10 are both meshed with the planetary gear Ⅰ11. The pressure ring Ⅰ14 is a flat ring structure, which is installed on one side of the gear ring Ⅰ13, and the rotating shaft of the motor 1 passes through the pressure ring Ⅰ14; after installation, the pressure ring Ⅰ14 is located between the housing 2 and the planetary gear Ⅰ11, and plays an isolation role. Only part of the mounting shaft on the gear frame Ⅰ12 extends into the gear ring Ⅰ13, and the other parts are located outside the gear ring Ⅰ13. Therefore, it can be seen that the gear frame Ⅰ12 is located on the other side of the gear ring Ⅰ13. The input gear 10 is driven by the motor 1 to move, and the input gear 10 drives the planetary gear Ⅰ11 to rotate, which in turn drives the gear frame Ⅰ12 to rotate, and finally, the output gear Ⅰ16 located on the gear frame Ⅰ12 rotates.
[0022] The planetary reduction gear set II6 includes planetary gear II18, gear frame II19, gear ring II20, pressure ring II21, and mounting ring II22. The gear ring II20 is movably connected to the housing 2 and relatively stationary in the circumferential direction around the center line of the transmission shaft 8, and the mounting ring II22 is movably connected to the housing 2 and relatively stationary in the circumferential direction around the center line of the transmission shaft 8; the mounting ring II22 is movably connected to the housing 2 and relatively stationary in the circumferential direction around the center line of the transmission shaft 8; the outer sides of the gear ring II20 and the mounting ring II22 are provided with limiting protrusions 17, and the limiting protrusions 17 are embedded in the limiting grooves of the housing 2, so that the gear ring II20 and the mounting ring II22 can slide along the limiting grooves in the direction parallel to the center line of the transmission shaft 8, but cannot rotate relative to the housing 2 in the circumferential direction around the center line of the transmission shaft 8, that is, the two are relatively stationary. After installation, the mounting ring I15 is located between the gear ring I13 and the gear ring II20.
[0023] The gear frame II19 is composed of a disc body, a mounting shaft, and an output gear II23. The disc body is a disc-shaped structure; the mounting shaft is distributed on one side of the disc body, and the mounting shaft is fixedly connected to the disc body; the output gear II23 is located on the other side of the disc body, and the center line of the output gear II23, the center line of the disc body, and the center line of the transmission shaft 8 coincide. The planetary gear II18 is movably mounted on the gear frame II19, and after installation, the planetary gear II18 can rotate on the gear frame II19; the gear frame II19 is installed with four planetary gears II18. The planetary gear II18 and the output gear I16 are both located inside the gear ring II20, and the output gear I16 is also located between the planetary gears II18, and the gear ring II20 and the output gear I16 are both meshed with the planetary gear II18. The pressure ring II21 is a flat ring structure, which is installed on one side of the gear ring II20, and the output gear I16 passes through the pressure ring II21; after installation, the pressure ring II21 is located between the gear frame I12 and the planetary gear II18, which plays an isolation role. Only part of the mounting shaft on the gear carrier II 19 extends into the gear ring II 20, and the other parts are located outside the gear ring II 20. Therefore, it can be seen that the gear carrier II 19 is located on the other side of the gear ring II 20. When the output gear I 16 rotates, it drives the planetary gear II 18 to rotate, and then drives the gear carrier II 19 to rotate. Finally, the output gear II 23 located on the gear carrier II 19 rotates.
[0024] The planetary reduction gear set III7 includes planetary gears III24, gear carrier III25, gear ring III26, and pressure ring III27. The gear ring III26 is movably connected to the housing 2 and relatively stationary in the circumferential direction around the center line of the transmission shaft 8; a limiting protrusion 17 is provided on the outer side of the gear ring III26, and the limiting protrusion 17 is embedded in the limiting groove of the housing 2, so that the gear ring II20 can slide along the limiting groove in a direction parallel to the center line of the transmission shaft 8, but cannot rotate relative to the housing 2 in the circumferential direction around the center line of the transmission shaft 8, that is, the two are relatively stationary. After installation, the installation ring II22 is located between the gear ring II20 and the gear ring III26.
[0025] The gear frame III25 is composed of a disc body, a mounting shaft, and a connecting column. The disc body is a disc-shaped structure; the mounting shaft is distributed on one side of the disc body and is fixedly connected to the disc body; the connecting column is located on the other side of the disc body, and a connecting hole 28 is provided on the connecting column. The center lines of the connecting hole 28, the center lines of the disc body, and the center lines of the transmission shaft 8 coincide. The transmission shaft 8 is embedded in the connecting hole 28 and the transmission shaft 8 is fixedly connected to the gear frame III25. The planetary gear III24 is movably mounted on the gear frame III25. After installation, the planetary gear III24 can rotate on the gear frame III25; the gear frame III25 is installed with three planetary gears III24. The planetary gear III24 and the output gear II23 are both located inside the gear ring III26, and the output gear II23 is also located between the planetary gears III24. The gear ring III26 and the output gear II23 are both meshed with the planetary gear III24. The pressure ring III27 is a flat ring structure, which is installed on one side of the gear ring II20, and the output gear II23 passes through the pressure ring III27; after installation, the pressure ring III27 is located between the gear frame II19 and the planetary gear III24, playing a role of isolation. Only part of the installation shaft on the gear frame III25 extends into the gear ring III26, and the other parts are located outside the gear ring III26. Therefore, it can be distinguished that the gear frame III25 is located on the other side of the gear ring III26. When the output gear II23 rotates, it drives the planetary gear III24 to rotate, and then drives the gear frame III25 to rotate, and finally, the transmission shaft 8 connected to the gear frame III25 is transmitted. The transmission shaft 8 drives the output shaft 9 to rotate.
Claims
1. A driving device for a micro-tillage machine, characterized in that: The driving device for a micro-tillage machine comprises a motor (1) and a transmission component, wherein the transmission component comprises a housing (2), a planetary reduction assembly (3), and an output assembly (4), wherein the planetary reduction assembly (3) and the output assembly are both installed in the housing (2), and the motor (1) is installed outside the housing (2), and the motor (1) is connected to the output assembly (4) via the planetary reduction assembly (3), and the planetary reduction assembly (3) comprises a planetary reduction gear set I (5), a planetary reduction gear set II (6), and a planetary reduction gear set III (7), wherein the planetary reduction gear set I (5), The planetary reduction gear set II (6) and the planetary reduction gear set III (7) are connected in series in sequence. The output assembly (4) comprises a transmission shaft (8) and an output shaft (9). The transmission shaft (8) and the output shaft (9) are both movably mounted on the housing (2). The end of the output shaft (9) is located outside the housing (2) and serves as the output end of the driving device for the micro-tillage machine. The transmission shaft (8) and the output shaft (9) are connected via a bevel gear. The motor (1) is connected to the planetary reduction gear set I (5), and the planetary reduction gear set III (7) is connected to the transmission shaft (8).
2. The driving device for a micro-tillage machine according to claim 1, characterized in that: The planetary reduction gear set I (5) comprises an input gear (10), a planetary gear I (11), a gear frame I (12), a gear ring I (13), and a pressure ring I (14). The input gear (10) is mounted on the rotating shaft of the motor (1), and the center line of the rotating shaft coincides with the center line of the transmission shaft (8). The gear ring I (13) is movably connected to the housing (2) and is relatively stationary in the circumferential direction around the center line of the transmission shaft (8). The planetary gear I (11) is movably mounted on the gear frame I (12), and the planetary gear I (11) is rotatable on the gear frame I (12). The planetary gear I (11) and the input gear (10) are both located inside the gear ring I (13), and the gear ring I (13) , the input gear (10) is meshed with the planetary gear I (11), the pressure ring I (14) is located on one side of the gear ring I (13), the gear frame I (12) is located on the other side of the gear ring I (13), the pressure ring I (14) is located between the housing (2) and the planetary gear I (11), the gear frame I (12) is provided with an output gear I (16), the planetary reduction gear set II (6) comprises a planetary gear II (18), a gear frame II (19), a gear ring II (20), and a pressure ring II (21), the gear ring II (20) is movably connected to the housing (2) and relatively stationary in the circumferential direction around the center line of the transmission shaft (8), the planetary gear II (18) is movably mounted on the gear frame II (19), The planetary gear II (18) is rotatable on the gear carrier II (19); the planetary gear II (18) and the output gear I (16) are both located inside the gear ring II (20), and the gear ring II (20) and the output gear I (16) are both meshed with the planetary gear II (18); the pressure ring II (21) is located on one side of the gear ring II (20), and the gear carrier II (19) is located on the other side of the gear ring II (20); the pressure ring II (21) is located between the gear carrier I (12) and the planetary gear II (18); the gear carrier II (19) is provided with an output gear II (23); the planetary reduction gear set III (7) comprises a planetary gear III (24), a gear carrier III (25), a gear ring III (26), and a pressure ring III (27). , the gear ring III (26) is movably connected to the housing (2) and relatively stationary in the circumferential direction around the center line of the transmission shaft (8), the planetary gear III (24) is movably mounted on the gear carrier III (25), the planetary gear III (24) is rotatable on the gear carrier III (25), the planetary gear III (24) and the output gear II (23) are both located inside the gear ring III (26), and the gear ring III (26) and the output gear II (23) are both meshed with the planetary gear III (24), the pressure ring III (27) is located on one side of the gear ring II (20), the gear carrier III (25) is located on the other side of the gear ring III (26), and the pressure ring III (27) is located between the gear carrier II (19) and the planetary gear III (24),The gear frame III (25) is provided with a connecting hole (28), the transmission shaft (8) is embedded in the connecting hole (28), and the transmission shaft (8) is fixedly connected to the gear frame III (25).
3. The driving device for a micro-tillage machine according to claim 2, characterized in that: The planetary reduction gear set I (5) further comprises a mounting ring I (15), wherein the mounting ring I (15) is movably connected to the housing (2) and relatively stationary in the circumferential direction around the center line of the transmission shaft (8), and the mounting ring I (15) is located between the gear ring I (13) and the gear ring II (20). The planetary reduction gear set II (6) further comprises a mounting ring II (22), wherein the mounting ring II (22) is movably connected to the housing (2) and relatively stationary in the circumferential direction around the center line of the transmission shaft (8), and the mounting ring II (22) is located between the gear ring II (20) and the gear ring III (26).
4. The driving device for a micro-tillage machine according to claim 3, characterized in that: The housing (2) is provided with a limiting groove, the extension direction of which is parallel to the center line of the transmission shaft (8), and the outer sides of the gear ring I (13), the gear ring II (20), the gear ring III (26), the mounting ring I (15), and the mounting ring I (15) are all provided with limiting protrusions (17), and the limiting protrusions (17) are embedded in the limiting groove.
5. The driving device for a micro-tillage machine according to claim 2, characterized in that: The number of the planetary gears I (11) and the number of the planetary gears II (18) are both greater than the number of the planetary gears III (24).