CN222010886U - Planetary high-low speed combined transmission device - Google Patents
Planetary high-low speed combined transmission device Download PDFInfo
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- CN222010886U CN222010886U CN202420721684.3U CN202420721684U CN222010886U CN 222010886 U CN222010886 U CN 222010886U CN 202420721684 U CN202420721684 U CN 202420721684U CN 222010886 U CN222010886 U CN 222010886U
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Abstract
The utility model provides a planetary high-low speed combined transmission device, which relates to a stirring transmission structure, and comprises: a base; the first rotating shaft is connected with the base through a first bearing; a central hole is formed in the axial direction of the first rotating shaft; the second rotating shaft penetrates through the central hole, and two ends of the second rotating shaft are connected with the base through second bearings; the first rotating shaft and the second rotating shaft are respectively connected with the first driving component and the second driving component; the first driving component is used for driving the first rotating shaft to rotate; the second driving component is used for driving the second rotating shaft to rotate. The first rotating shaft and the second rotating shaft can be independently operated or can be operated simultaneously, so that high flexibility is provided; all main components are integrated on the base, so that the stability of the whole system is ensured, and the compactness of the whole transmission device is improved; the second rotating shaft penetrates into the first rotating shaft, so that the compactness of the transmission device is further improved, the occupied space of the transmission device is smaller, and the manufacturing cost is reduced.
Description
Technical Field
The utility model relates to a stirring transmission structure, in particular to a planetary high-low speed combined transmission device.
Background
The processing technology of material stirring is related to various industries, a traditional stirrer adopts a spiral structure, and the spiral is rotated to realize material stirring; when the viscous material is stirred, the viscous material is adhered to the spiral structure and the cylinder wall, and the stirring effect is not ideal; therefore, a planetary stirrer with better performance is adopted, the planetary stirrer utilizes a rotation and revolution combination mode to stir materials, and the stirring effect on viscous materials is obviously better than that of the traditional stirring equipment with a spiral structure;
at present, the planetary mixer is generally provided with a high-speed transmission structure and a low-speed transmission structure in an up-down, left-right, front-back arrangement mode, and the transmission structure is not compact, so that the size of the planetary mixer is larger.
Disclosure of utility model
The utility model aims to provide a planetary high-low speed combined transmission device, and aims to solve the technical problem of improving the compactness of a planetary transmission structure.
The utility model is realized by the following technical scheme:
a planetary high and low speed compound transmission comprising:
A base;
The first rotating shaft is connected with the base through a first bearing; a central hole is formed in the axial direction of the first rotating shaft;
the second rotating shaft penetrates through the center hole, and two ends of the second rotating shaft are connected with the base through second bearings;
The first rotating shaft and the second rotating shaft are respectively connected with a first driving component and a second driving component;
the first driving component is used for driving the first rotating shaft to rotate;
The second driving component is used for driving the second rotating shaft to rotate.
The base provides stable support for other components and ensures the stability of the whole device; the first bearing is connected with the base so that the first rotating shaft can rotate relative to the base. A central hole is formed in the axial direction of the first rotating shaft, a penetrating place is provided for the second rotating shaft, and the second rotating shaft penetrating through the central hole is connected with the base through a second bearing, so that the second rotating shaft can rotate relative to the base and can also rotate relative to the first rotating shaft; the first driving component and the second driving component are respectively connected with the first rotating shaft and the second rotating shaft, and can independently drive the two rotating shafts to rotate.
The first rotating shaft and the second rotating shaft are provided with driving components, which means that the first rotating shaft and the second rotating shaft can independently operate or simultaneously operate, thereby providing high flexibility; all main components are integrated on the base, so that the stability of the whole system is ensured, the compactness of the whole transmission device is improved, the second rotating shaft penetrates into the first rotating shaft, the compactness of the transmission device is further improved by the arrangement mode, the occupied space of the transmission device is smaller, and the manufacturing cost is reduced.
Further, a planet carrier is sleeved on the first rotating shaft and fixedly connected with the first rotating shaft;
The planet carrier is provided with a first stirring shaft.
The planet carrier is sleeved on the first rotating shaft, so that the planet carrier and the first rotating shaft rotate together; the first stirring shaft is arranged on the planet carrier, and can also perform corresponding stirring or mixing operation through rotation of the planet carrier; because the first rotating shaft is sleeved in the planet carrier, when the first rotating shaft rotates, the first rotating shaft drives the planet carrier to rotate around the first rotating shaft axis, so that the first stirring shaft on the planet carrier also rotates around the first rotating shaft axis, and the revolution of the first stirring shaft is realized.
Compared with the prior art that the planet carrier and the first rotating shaft are arranged separately, the planet carrier is sleeved on the first rotating shaft, the compactness of the transmission device is improved in the width direction, and more functions can be realized in a compact device by optimizing the structural design.
Further, a first synchronous belt wheel is sleeved on the second rotating shaft, and the first synchronous belt wheel is fixedly connected with the second rotating shaft;
the planet carrier is provided with a second synchronous pulley, and the second synchronous pulley is in transmission connection with the first synchronous pulley through a synchronous belt;
the first stirring shaft is connected with the planet carrier through a third bearing;
The first stirring shaft is sleeved in the second synchronous pulley, and the second synchronous pulley is fixedly connected with the first stirring shaft.
The connection and transmission between the planet carrier and the first stirring shaft is enhanced by means of a synchronous pulley transmission.
The first synchronous belt wheel is sleeved on the second rotating shaft and rotates along with the second rotating shaft; the second synchronous belt pulley is arranged on the planet carrier and is in transmission connection with the first synchronous belt pulley through a synchronous belt. This means that when the second rotating shaft rotates, the first synchronous pulley will drive the second synchronous pulley to rotate; the first stirring shaft is sleeved in the second synchronous belt pulley and is connected with the planet carrier through the third bearing, so that the first stirring shaft can rotate relative to the planet carrier and can also receive the driving of the planet carrier;
The connection and transmission between the planet carrier and the first stirring shaft are further enhanced, and the compactness of the whole device is improved. At the same time, this helps to ensure a stable transmission between the first stirring shaft and the planet carrier, since the synchronous pulley transmission has a high transmission efficiency and an accurate transmission ratio.
Further, the diameter of the first synchronous pulley is larger than that of the second synchronous pulley.
And the transmission ratio of the two pulleys is changed by adjusting the diameters of the first synchronous pulley and the second synchronous pulley. The larger diameter first timing pulley rotates slower than the smaller diameter second timing pulley, thereby creating a speed differential that provides more possibilities and flexibility for the transmission between the first stirring shaft and the planet carrier; in addition, through adjusting the diameters of the first synchronous pulley and the second synchronous pulley, the transmission efficiency between the two pulleys can be changed, and larger diameter difference can cause more power to be transmitted from the first synchronous pulley to the second synchronous pulley, so that the transmission efficiency is improved.
The design further expands the functions and performances of the original device, and the diameter of the belt wheel is adjusted to adapt to different application requirements and working conditions.
Further, a sun gear is fixedly arranged on the base, and a planet wheel and a second stirring shaft are arranged on the planet carrier;
the second stirring shaft is sleeved in the planetary gear and fixedly connected with the planetary gear;
The first rotating shaft passes through a sun gear, and the sun gear is meshed with the planet gears;
The second stirring shaft is connected with the planet carrier through a fourth bearing.
The sun gear is fixedly arranged on the base, so that the sun gear is prevented from rotating along with the first rotating shaft and the second rotating shaft, and the stability of the sun gear is ensured; the planet wheel is arranged on the planet carrier and meshed with the sun wheel, when the first rotating shaft rotates, the planet carrier drives the planet wheel to rotate, and the planet wheel revolves around the axis of the first rotating shaft and also realizes the rotation of the planet wheel due to the meshing action of the planet wheel and the sun wheel, so that the second stirring shaft sleeved with the planet wheel is driven to rotate, and the second stirring shaft is sleeved in the planet wheel, so that the second stirring shaft can stably run on the planet wheel and simultaneously can rotate together with the planet wheel, and the revolution and the rotation of the second stirring shaft are realized; the second stirring shaft is connected with the planet carrier through a fourth bearing, so that the second stirring shaft can rotate relative to the planet carrier and can also receive the driving of the planet carrier;
In order to further enhance the functionality of the planetary transmission, the structures of the sun gear, the planet gears and the second stirring shaft are added, so that the device can have more application scenes and functions. For example, by adjusting the size and number of teeth of the sun and planet gears, the gear ratio of the device can be changed; while the second stirring shaft may be used to perform more mixing or stirring operations.
Further, the diameter of the sun gear is larger than that of the planet gears.
The transmission ratio of the two wheels can be changed by adjusting the diameters of the sun wheel and the planet wheel. Larger diameter sun gears will rotate slower than smaller diameter planet gears, creating a speed differential that can provide more possibilities and flexibility for the transmission between the sun gear and the planet carrier; in addition, the transmission efficiency between the two wheels can be changed by adjusting the diameters of the sun wheel and the planet wheel, and larger diameter difference can cause more power to be transmitted from the sun wheel to the planet carrier, so that the transmission efficiency is improved.
The design further expands the functions and performances of the transmission device on the basis of the diameters of the first synchronous belt pulley and the second synchronous belt pulley, and the diameter of the transmission device is adjusted to adapt to different application requirements and working conditions.
Further, the first stirring shaft is disposed below the second stirring shaft.
In order to realize parallel transmission of the two stirring shafts, the arrangement helps to ensure that the two stirring shafts can work stably and smoothly during operation, and vibration or friction caused by crossed or non-parallel axes is avoided.
In addition, the first stirring shaft is arranged below the second stirring shaft, so that the flow and the conveying of materials can be conveniently realized. Because the first stirring shaft is lower, the material can flow from high to low more easily, and then the second stirring shaft is used for further processing or treatment. This design helps to improve the efficiency and smoothness of the production process.
Compared with the prior art, the utility model has the following advantages and beneficial effects:
The base provides stable support for other components and ensures the stability of the whole device; the first bearing is connected with the base so that the first rotating shaft can rotate relative to the base. A central hole is formed in the axial direction of the first rotating shaft, a penetrating place is provided for the second rotating shaft, and the second rotating shaft penetrating through the central hole is connected with the base through a second bearing, so that the second rotating shaft can rotate relative to the base and can also rotate relative to the first rotating shaft; the first driving component and the second driving component are respectively connected with the first rotating shaft and the second rotating shaft, and can independently drive the two rotating shafts to rotate.
The first rotating shaft and the second rotating shaft are provided with driving components, which means that the first rotating shaft and the second rotating shaft can independently operate or simultaneously operate, thereby providing high flexibility; all main components are integrated on the base, so that the stability of the whole system is ensured, the compactness of the whole transmission device is improved, the second rotating shaft penetrates into the first rotating shaft, the compactness of the transmission device is further improved by the arrangement mode, the occupied space of the transmission device is smaller, and the manufacturing cost is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present utility model, the drawings that are needed in the examples will be briefly described below, it being understood that the following drawings only illustrate some examples of the present utility model and therefore should not be considered as limiting the scope, and that other related drawings may be obtained from these drawings without inventive effort for a person skilled in the art. In the drawings:
FIG. 1 is a schematic view of the external structure of a planetary high and low speed compound transmission;
FIG. 2 is a cross-sectional view of A-A of the planetary high and low speed compound transmission;
FIG. 3 is an enlarged view of FIG. 2A;
FIG. 4 is a B-B cross-sectional view of the planetary high and low speed compound transmission;
Fig. 5 is an enlarged view of B in fig. 4.
In the drawings, the reference numerals and corresponding part names:
10. A base; 21. a first rotating shaft; 22. a second rotating shaft; 23. a first bearing; 24. a second bearing; 25. a fifth bearing; 31. a belt pulley; 32. a sprocket; 40. a planet carrier; 41. a first stirring shaft; 42. a second stirring shaft; 43. a third bearing; 44. a fourth bearing; 51. a first synchronous pulley; 52. a second synchronous pulley; 53. a synchronous belt; 61. a sun gear; 62. and (3) a planet wheel.
Detailed Description
For the purpose of making apparent the objects, technical solutions and advantages of the present utility model, the present utility model will be further described in detail with reference to the following examples and the accompanying drawings, wherein the exemplary embodiments of the present utility model and the descriptions thereof are for illustrating the present utility model only and are not to be construed as limiting the present utility model.
Example 1
Referring to fig. 1, in order to improve the compactness of the transmission, embodiment 1 provides a planetary high-low speed combined transmission, including:
A base 10;
A first rotating shaft 21, wherein the first rotating shaft 21 is connected with the base 10 through a first bearing 23; a center hole is formed in the axial direction of the first rotating shaft 21;
A second rotating shaft 22, wherein the second rotating shaft 22 passes through the center hole, and the second rotating shaft 22 is connected with the first rotating shaft 21 through a fifth bearing 25; two ends of the second rotating shaft 22 are connected with the base 10 through a second bearing 24;
The first rotating shaft 21 and the second rotating shaft 22 are respectively connected with a first driving component and a second driving component;
the first driving component is used for driving the first rotating shaft 21 to rotate;
the second driving assembly is used for driving the second rotating shaft 22 to rotate.
The first driving component may be a sprocket 32 and a low-speed reducer (a worm gear reducer, a planetary reducer, a cycloidal pin gear reducer, a continuously variable transmission, etc.) which are connected through a chain transmission, the sprocket 32 is fixedly connected with the first rotating shaft 21 through a flat key, the second driving component is a belt pulley 31 and a high-speed motor (CM-2-500, CM-25-280, CM-95-250, CM-AMB-400, etc.) which are connected through a belt transmission, and the belt pulley 31 is fixedly connected with the second rotating shaft 22 through a flat key;
The first driving component can also be a belt pulley 31 and a high-speed motor (CM-2-500, CM-25-280, CM-95-250, CM-AMB-400 and the like of Celeroton) which are connected through belt transmission, and the second driving component is a chain wheel 32 and a low-speed reducer (a worm gear reducer, a planetary reducer, a cycloidal pin gear reducer, a continuously variable transmission and the like) which are connected through chain transmission;
The first driving component is a low-speed reducer, and the second driving component is a high-speed motor; the base 10 provides stable support for other components and ensures stability of the entire device; is connected to the base 10 through a first bearing 23 so that the first rotation shaft 21 can rotate with respect to the base 10. A central hole formed in an axial direction of the first rotating shaft 21, providing a place for the second rotating shaft 22 to pass through, the second rotating shaft 22 passing through the central hole being connected with the base 10 through a second bearing 24, so that the second rotating shaft 22 can also rotate relative to the base 10 and can also rotate relative to the first rotating shaft 21; the first driving component and the second driving component are respectively connected with the first rotating shaft 21 and the second rotating shaft 22, and can independently drive the two rotating shafts to rotate.
The first rotating shaft 21 and the second rotating shaft 22 are provided with driving components, which means that the first rotating shaft 21 and the second rotating shaft 22 can independently operate or simultaneously operate, thereby ensuring high-low speed combined transmission and providing high flexibility; all main components are integrated on the base 10, so that the stability of the whole system is ensured, the compactness of the whole transmission device is improved, the second rotating shaft 22 penetrates into the first rotating shaft 21, the compactness of the transmission device is further improved by the arrangement mode, the occupied space of the transmission device is smaller, and the manufacturing cost is reduced.
The above design also offers the possibility of modularity. If certain characteristics of the transmission are to be changed (e.g., increasing or decreasing gear ratios), only certain components need to be replaced without major modifications to the overall device.
Overall, the design of the planetary high and low speed compound transmission improves the compactness and stability of the overall device by optimizing the connection and layout of the components, while also providing greater flexibility and convenience.
Example 2
On the basis of example 1, in order to achieve revolution, the following structure was devised:
Referring to fig. 1, a planet carrier 40 is sleeved on the first rotating shaft 21, and the planet carrier 40 is fixedly connected with the first rotating shaft 21 through a flat key;
The carrier 40 is provided with two or more first stirring shafts 41.
The planet carrier 40 is sleeved on the first rotating shaft 21, so that the planet carrier 40 rotates together with the first rotating shaft 21; the first stirring shaft 41 is arranged on the planet carrier 40, and the first stirring shaft 41 can also perform corresponding stirring or mixing operation through the rotation of the planet carrier 40; because the first rotating shaft 21 is sleeved in the planet carrier 40, when the first rotating shaft 21 rotates, the first rotating shaft 21 drives the planet carrier 40 to rotate around the axis of the first rotating shaft 21, so that the first stirring shaft 41 on the planet carrier 40 also rotates around the axis of the first rotating shaft 21, and revolution of the first stirring shaft 41 is realized.
Compared with the prior art that the planet carrier 40 and the first rotating shaft 21 are arranged separately, the planet carrier 40 is sleeved on the first rotating shaft 21, the compactness of the transmission device is improved in the width direction, and more functions can be realized in a compact device by optimizing the structural design.
Example 3
On the basis of example 2, in order to realize high-speed rotation while ensuring revolution, the following structure was devised:
Referring to fig. 1 to 3, a first timing belt 53 wheel 51 is sleeved on the second rotating shaft 22, and the first timing belt 53 wheel 51 is fixedly connected with the second rotating shaft 22;
The planet carrier 40 is provided with a second synchronous belt 53 wheel 52, and the second synchronous belt 53 wheel 52 is in transmission connection with the first synchronous belt 53 wheel 51 through the synchronous belt 53;
the first stirring shaft 41 is connected to the carrier 40 via a third bearing 43;
The first stirring shaft 41 is sleeved in the second synchronous belt 53 wheel 52, and the second synchronous belt 53 wheel 52 is fixedly connected with the first stirring shaft 41.
The connection and transmission between the planet carrier 40 and the first stirring shaft 41 is enhanced by means of a timing belt 53 wheel transmission.
The first synchronous belt 53 wheel 51 is sleeved on the second rotating shaft 22 and rotates along with the second rotating shaft 22; the second timing belt 53 wheel 52 is provided on the carrier 40 and is in driving connection with the first timing belt 53 wheel 51 via the timing belt 53. This means that when the second shaft 22 rotates, the first timing belt 53 wheel 51 will drive the second timing belt 53 wheel 52 to rotate; because the first stirring shaft 41 is sleeved in the second synchronous belt 53 wheel 52 and is connected with the planet carrier 40 through the third bearing 43, the first stirring shaft 41 can rotate relative to the planet carrier 40 and can also receive the driving of the planet carrier 40, when the first synchronous belt 53 wheel 51 drives the second synchronous belt 53 wheel 52 to rotate, the second synchronous belt 53 wheel 52 drives the first stirring shaft 41 to rotate, and the rotation is realized while the first stirring shaft 41 revolves; since the second rotation shaft 22 is connected to the high-speed motor, the first stirring shaft 41 rotates at a high speed;
further enhancing the connection and transmission between the planet carrier 40 and the first stirring shaft 41 and improving the compactness of the whole device. At the same time, since the timing belt 53 wheel transmission has high transmission efficiency and accurate transmission ratio, it helps to ensure stable transmission between the first stirring shaft 41 and the carrier 40.
Example 4
On the basis of example 3, in order to further increase the speed of high-speed rotation, the following structure was devised:
The diameter of the first timing belt 53 wheel 51 is larger than the diameter of the second timing belt 53 wheel 52.
The transmission ratio of the two pulleys is changed by adjusting the diameters of the first synchronous belt 53 wheel 51 and the second synchronous belt 53 wheel 52. The larger diameter first timing belt 53 wheel 51 will rotate slower than the smaller diameter second timing belt 53 wheel 52, creating a speed differential that may provide more possibilities and flexibility for the transmission between the first stirring shaft 41 and the planet carrier 40; in addition, by adjusting the diameters of the first timing belt 53 wheel 51 and the second timing belt 53 wheel 52, the transmission efficiency between the two pulleys can also be changed, and a larger diameter difference results in more power being transmitted from the first timing belt 53 wheel 51 to the second timing belt 53 wheel 52, thereby improving the transmission efficiency.
The design further expands the functions and performances of the original device, and the diameter of the belt wheel is adjusted to adapt to different application requirements and working conditions.
Example 5
With reference to fig. 1 to 5, on the basis of any of embodiments 2 to 4, in order to ensure revolution while realizing low-speed rotation, the following structure is designed:
A sun gear 61 is fixedly arranged on the base 10, and a planet gear 62 and two or more second stirring shafts 42 are arranged on the planet carrier 40;
the second stirring shaft 42 is sleeved in the planetary gear 62, and the second stirring shaft 42 is fixedly connected with the planetary gear 62 through a flat key;
the first rotating shaft 21 passes through a sun gear 61, and the sun gear 61 is meshed with a planetary gear 62;
The second stirring shaft 42 is connected to the carrier 40 via a fourth bearing 44.
The sun gear 61 is fixedly arranged on the base 10, so that the sun gear 61 does not rotate along with the first rotating shaft 21 and the second rotating shaft 22, and the stability of the sun gear 61 is ensured; the planet wheel 62 is arranged on the planet carrier 40 and meshed with the sun wheel 61, when the first rotating shaft 21 rotates, the planet carrier 40 drives the planet wheel 62 to rotate, and when the planet wheel 62 revolves around the axis of the first rotating shaft 21, the rotation of the planet wheel 62 is realized due to the meshing effect of the planet wheel with the sun wheel 61, so that the second stirring shaft 42 sleeved with the planet wheel 62 is driven to rotate, and the second stirring shaft 42 is sleeved in the planet wheel 62, so that the second stirring shaft 42 can stably run on the planet wheel 62 and simultaneously can rotate together with the planet wheel 62, and the revolution and the rotation of the second stirring shaft 42 are realized; the second stirring shaft 42 is connected with the planet carrier 40 through a fourth bearing 44, so that the second stirring shaft 42 can rotate relative to the planet carrier 40 and can also receive the driving of the planet carrier 40;
To further enhance the functionality of the planetary transmission, the structure of the sun gear 61, the planet gears 62 and the second stirring shaft 42 is added, so that the device can have more application scenes and functions. For example, by adjusting the size and number of teeth of the sun gear 61 and the planet gears 62, the gear ratio of the device can be changed; while the second stirring shaft 42 may be used to perform more mixing or stirring operations.
Example 6
In example 5, in order to increase the rotation speed of the low-speed rotation, the following structure was devised:
the diameter of the sun gear 61 is larger than the diameter of the planet gears 62.
The gear ratio of the two wheels can be changed by adjusting the diameters of the sun wheel 61 and the planet wheel 62. The larger diameter sun gear 61 will rotate slower than the smaller diameter planet gears 62, creating a speed differential that can provide more possibilities and flexibility for the transmission between the sun gear 61 and the planet carrier 40; in addition, the transmission efficiency between the sun gear 61 and the planet gears 62 can be changed by adjusting the diameters, and a larger diameter difference can result in more power being transmitted from the sun gear 61 to the planet carrier 40, thereby improving the transmission efficiency.
The design further expands the functions and the performances of the transmission device on the basis of the diameters of the first synchronous belt 53 wheel 51 and the second synchronous belt 53 wheel 52, and the diameter of the wheels is adjusted to adapt to different application requirements and working conditions.
Example 7
On the basis of any of the above embodiments, considering a specific use scenario, when stirring viscous materials, the first rotating shaft 21 rotates at a high speed, the viscous materials move upward during stirring, and the upward moving viscous materials block the viscous materials from splashing under the revolution of the planet carrier 40 and the rotation of the second stirring shaft 42, and the following structure is designed:
The first stirring shaft 41 is provided below the second stirring shaft 42.
In order to realize parallel transmission of the two stirring shafts, the arrangement helps to ensure that the two stirring shafts can work stably and smoothly during operation, and vibration or friction caused by crossed or non-parallel axes is avoided.
In addition, the first stirring shaft 41 is arranged below the second stirring shaft 42, so that the flow and the conveying of materials can be conveniently realized. Because of the lower position of the first stirring shaft 41, the material can more easily flow from high to low and then be further processed or treated by the second stirring shaft 42. This design helps to improve the efficiency and smoothness of the production process.
The foregoing description of the embodiments has been provided for the purpose of illustrating the general principles of the utility model, and is not meant to limit the scope of the utility model, but to limit the utility model to the particular embodiments, and any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the utility model are intended to be included within the scope of the utility model.
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420721684.3U CN222010886U (en) | 2024-04-09 | 2024-04-09 | Planetary high-low speed combined transmission device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420721684.3U CN222010886U (en) | 2024-04-09 | 2024-04-09 | Planetary high-low speed combined transmission device |
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| Publication Number | Publication Date |
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| CN222010886U true CN222010886U (en) | 2024-11-15 |
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|---|---|---|---|
| CN202420721684.3U Active CN222010886U (en) | 2024-04-09 | 2024-04-09 | Planetary high-low speed combined transmission device |
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| CN (1) | CN222010886U (en) |
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- 2024-04-09 CN CN202420721684.3U patent/CN222010886U/en active Active
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