Double-wall split type planetary reducer
By adopting the double-wall separate planetary reducer design, the problems of traditional planetary reducers in unbalanced rotation, noise and vibration, inconvenient loading and unloading, insufficient bearing rigidity and poor heat dissipation performance are solved, and balanced operation, reduction of noise and vibration, convenience of loading and unloading, enhancement of bearing load, reduction of external dimensions and improvement of heat dissipation performance are achieved.
Patent Information
- Application Number
- CN202422165290.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-04
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-09-04
AI Technical Summary
Traditional planetary reducers have problems with rotation imbalance, noise and vibration in their design, inconvenient loading and unloading, insufficient bearing rigidity, resulting in an increase in overall volume and poor heat dissipation performance.
The double-wall separate planetary reducer design is used to insert the sun gear in the center of the first and second-level planetary carriers, put gears on the sides, and cylindrical rollers in the gears to form a double-wall structure. The design is processed in a one-time manner in a high-precision machining center to ensure accuracy and stability, and directly process the internal ring gear in the reducer housing to improve heat dissipation performance.
It achieves balanced operation, reduces noise and vibration, is easy to load and unload, enhances bearing load, reduces the external dimensions of the reducer, and improves heat dissipation performance.
Smart Images
Figure CN222910672U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of reducers, and in particular relates to a double-wall separated planetary reducer. Background Art
[0002] At present, traditional planetary reducers have some design defects. Since the double-walled integral planetary carrier in the prior art is usually cast, the planetary carrier cannot be fully processed, resulting in unbalanced rotation of the planetary carrier, noise and vibration, and inconvenient loading and unloading of the planetary axle. In addition, the cylindrical roller bearings or full-filled cylindrical roller bearings used on the planetary wheels and planetary axles are composed of an inner ring raceway, an outer ring raceway and cylindrical rollers, which are large in size, making the diameter of the planetary axle smaller and weakening the rigidity of the planetary axle. If rigid conditions are required, the overall planetary reducer will become larger. Furthermore, the inner gear ring and the reducer housing are split, and the inner gear ring is embedded in the reducer housing, resulting in a large reducer and poor heat dissipation. Summary of the invention
[0003] The utility model aims to overcome the above-mentioned shortcomings and provide a double-walled split planetary reducer with balanced operation, reduced noise and vibration, convenient loading and unloading, increased bearing load, reduced reducer dimensions and good heat dissipation performance.
[0004] The utility model discloses a double-wall split type planetary reducer, comprising a primary sun gear, a primary planetary wheel frame, a primary planetary wheel shaft, a cylindrical roller A, a primary planetary gear, a primary planetary wheel cover, a secondary planetary wheel frame, a secondary planetary gear, a cylindrical roller B, a housing, a secondary planetary wheel cover, a secondary planetary wheel shaft, a secondary sun gear, and an output shaft. The utility model is characterized in that: the primary sun gear is inserted into the center of the primary planetary wheel frame, the primary planetary gear is placed on the edge of the primary planetary wheel frame, the cylindrical roller A is placed in the primary planetary gear and inserted into the primary planetary wheel shaft cover and the primary planetary wheel cover, the secondary sun gear is inserted into the center of the secondary planetary wheel frame, the secondary planetary gear is placed on the edge of the secondary planetary wheel frame, the cylindrical roller B is placed in the secondary planetary gear and inserted into the secondary planetary wheel shaft cover and the secondary planetary wheel cover, the output shaft is connected to the secondary sun gear, the primary planetary gear and the secondary planetary gear are covered with a housing, and the primary planetary gear and the secondary planetary gear are meshed with gears arranged in the housing.
[0005] The primary sun gear is meshed with the primary planetary gear.
[0006] The secondary sun gear is meshed with the secondary planetary gears.
[0007] A retaining ring A and a spacer ring A are respectively installed at the left and right ends of the first-stage planetary gear.
[0008] The left and right ends of the secondary planetary gear are respectively equipped with a spacer ring B and a retaining ring B.
[0009] Compared with the prior art, the utility model has obvious beneficial effects; it can be seen from the above technical scheme that: by inserting the primary sun gear in the center of the primary planetary gear frame, placing the primary planetary gear on the side of the primary planetary gear frame, placing the cylindrical roller A in the primary planetary gear and inserting it into the primary planetary gear shaft cover on the primary planetary gear cover, inserting the secondary sun gear in the center of the secondary planetary gear frame, placing the secondary planetary gear on the side of the secondary planetary gear frame, placing the cylindrical roller B in the secondary planetary gear and inserting it into the secondary planetary gear shaft cover on the secondary planetary gear cover, the output shaft is connected to the secondary sun gear, the primary planetary gear and the secondary planetary gear are covered with a shell outside, and the primary planetary gear and the secondary planetary gear are meshed with the gears set in the shell. The primary sun gear drives the primary planetary gear to rotate, the primary planetary gear drives the shell to rotate, the shell drives the secondary planetary gear to rotate, the secondary planetary gear drives the secondary sun gear to rotate, and the secondary sun gear drives the output shaft to rotate to output power. The primary planetary gear frame and the secondary planetary gear frame are respectively manufactured and assembled in a double-walled split manner, and are processed in a high-precision machining center at one time to ensure their accuracy and stability. It realizes balanced operation, reduces noise and vibration, is easy to load and unload, and increases bearing load. The first-level planetary gear shaft and the second-level planetary gear shaft are used as the inner ring raceway hardness of the bearing at HRC58-60, and the first-level planetary gear shaft and the second-level planetary gear shaft are used as the outer ring raceway hardness of the bearing at HRC58-60. High-quality full-fill cylindrical rollers are selected with a hardness of HRC62-64, which is 2-4 degrees higher than the raceway hardness, and its installation accuracy and lubrication conditions are guaranteed. The inner gear ring is directly processed in the reducer housing. For the integrated design of the inner gear ring as the reducer housing, attention is paid to its connection method and sealing performance with other components to ensure the normal operation and good heat dissipation of the reducer. In short, the utility model has balanced operation, reduces noise and vibration, is easy to load and unload, increases bearing load, reduces the outer dimensions of the reducer, and has good heat dissipation performance. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 It is a right view of the utility model;
[0011] Figure 2 yes Figure 1 A cross-sectional view of
[0012] Figure 3 It is an exploded view of the utility model with the outer shell removed.
[0013] Marking in the figure
[0014] 1. Primary sun gear, 2. Primary planetary gear carrier, 3. Primary planetary gear shaft, 4. Cylindrical roller A, 5. Retaining ring A, 6. Spacer ring A, 7. Primary planetary gear, 8. Primary planetary gear cover, 9. Secondary planetary gear carrier, 10. Secondary planetary gear, 11. Cylindrical roller B, 12. Spacer ring B, 13. Housing, 14. Retaining ring B, 15. Secondary planetary gear cover, 16. Secondary planetary gear shaft, 17. Secondary sun gear, 18. Output shaft. DETAILED DESCRIPTION
[0015] The specific implementation methods, structures, features and functions of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.
[0016] The purpose of the utility model and the solution of its main technical problems are achieved by adopting the following technical solutions:
[0017] The utility model discloses a double-wall split type planetary reducer, comprising a primary sun gear 1, a primary planetary wheel carrier 2, a primary planetary wheel shaft 3, a cylindrical roller A4, a retaining ring A5, a spacer ring A6, a primary planetary gear 7, a primary planetary wheel cover 8, a secondary planetary wheel carrier 9, a secondary planetary gear 10, a cylindrical roller B11, a spacer ring B12, a housing 13, a retaining ring B14, a secondary planetary wheel cover 15, a secondary planetary wheel shaft 16, a secondary sun gear 17, and an output shaft 18. The utility model is characterized in that: the primary sun gear 1 is inserted into the center of the primary planetary wheel carrier 2, three primary planetary gears 7 are placed on the edge of the primary planetary wheel carrier 2, cylindrical rollers A4 are placed in the three primary planetary gears 7, and the cylindrical rollers A4 are respectively inserted into the primary planetary wheel shaft 3 and covered with the primary planetary wheel cover 8, the secondary sun gear 17 is inserted into the center of the secondary planetary wheel carrier 9, four secondary planetary gears 10 are placed on the edge of the secondary planetary wheel carrier 9, cylindrical rollers B11 are placed in the four secondary planetary gears 10, and the cylindrical rollers B11 are respectively inserted into the secondary planetary wheel shaft 16 and covered with the secondary planetary wheel cover 15, The output shaft 18 is connected to the secondary sun gear 17. The three primary planetary gears 7 and the four secondary planetary gears 10 are covered with a housing 13. The three primary planetary gears 7 and the four secondary planetary gears 10 are meshed with gears arranged in the housing 13. The primary sun gear 1 is meshed with the three primary planetary gears 7. The secondary sun gear 17 is meshed with the four secondary planetary gears 10. The left and right ends of the primary planetary gear 7 are respectively installed with a retaining ring A5 and a spacer ring A6. The left and right ends of the secondary planetary gear 10 are respectively installed with a spacer ring B12 and a retaining ring B14.
[0018] When used; see Figure 2 , power is input at one end of the primary sun gear 1, the primary sun gear 1 drives the primary planetary gear 7 to rotate, the primary planetary gear 7 drives the housing 13 to rotate, the housing 13 drives the secondary planetary gear 10 to rotate, the secondary planetary gear 10 drives the secondary sun gear 17 to rotate, and the secondary sun gear 17 drives the output shaft 18 to rotate to output power.
[0019] The above description is only a preferred embodiment of the present invention and does not constitute any formal limitation on the present invention. Any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the technical solution of the present invention still fall within the scope of the technical solution of the present invention.
Claims
1. A double-wall split type planetary reducer, comprising a primary sun gear (1), a primary planetary gear carrier (2), a primary planetary gear shaft (3), a cylindrical roller A (4), a primary planetary gear (7), a primary planetary gear cover (8), a secondary planetary gear carrier (9), a secondary planetary gear (10), a cylindrical roller B (11) housing (13), a secondary planetary gear cover (15), a secondary planetary gear shaft (16), a secondary sun gear (17), and an output shaft (18), characterized in that: The center of the first planetary wheel carrier (2) is inserted into the first sun gear (1), the first planetary gear (7) is placed on the side of the first planetary wheel carrier (2), a cylindrical roller A (4) is placed in the first planetary gear (7), inserted into the first planetary wheel shaft (3), and covered with a first planetary wheel cover (8), the center of the second planetary wheel carrier (9) is inserted into the second sun gear (17), the side of the second planetary wheel carrier (9) is placed into the second planetary gear (10), a cylindrical roller B (11) is placed in the second planetary gear (10), inserted into the second planetary wheel shaft (16), and covered with a second planetary wheel cover (15), the output shaft (18) is connected to the second sun gear (17), the first planetary gear (7) and the second planetary gear (10) are covered with a housing (13), and the first planetary gear (7) and the second planetary gear (10) are meshed with gears arranged in the housing (13).
2. The double-wall split planetary reducer according to claim 1, characterized in that; The primary sun gear (1) is meshed with the primary planetary gear (7).
3. The double-wall split planetary reducer according to claim 1, characterized in that; The secondary sun gear (17) is meshed with the secondary planetary gear (10).
4. The double-wall split planetary reducer according to claim 1, characterized in that; A retaining ring A (5) and a spacer ring A (6) are respectively installed at the left and right ends of the first-stage planetary gear (7).
5. The double-wall split planetary reducer according to claim 1, characterized in that; A spacer ring B (12) and a retaining ring B (14) are respectively mounted on the left and right ends of the secondary planetary gear (10).