CN216242182U - Inner gearing planetary gear box - Google Patents
Inner gearing planetary gear box Download PDFInfo
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- CN216242182U CN216242182U CN202220314728.1U CN202220314728U CN216242182U CN 216242182 U CN216242182 U CN 216242182U CN 202220314728 U CN202220314728 U CN 202220314728U CN 216242182 U CN216242182 U CN 216242182U
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- planet wheel
- wheel
- hole
- planet
- sun
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- 238000010586 diagram Methods 0.000 description 9
- 238000009434 installation Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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Abstract
The application provides an inner meshing planetary gear box which comprises a sun gear, wherein a planetary gear meshed with the sun gear is arranged on the outer side of the sun gear, and an inner gear ring meshed with the planetary gear is arranged on the outer side of the planetary gear; a planet wheel supporting device is arranged on the planet wheel, and a secondary supporting device is arranged on the outer side of the planet wheel supporting device; the utility model adopts a double inner meshing and surface meshing mode to replace outer meshing and inner meshing of a plurality of planet wheels in the prior art, thereby not only increasing the torque, but also ensuring smaller size; therefore, the utility model has compact structure, small size and light weight; because the sun wheel and the planet wheel rotate in the same direction, the relative sliding speed is low, the friction is slight, the service life is long, the noise ratio is low, and the use of high rotating speed can be allowed.
Description
Technical Field
The application relates to the technical field of gear box transmission, in particular to an inner gearing planetary gear box.
Background
The main functions of the gear box are as follows: 1. accelerating and decelerating; 2. the rotating torque is changed, under the condition of the same power, the faster the gear rotates, the smaller the torque borne by the shaft is, and the larger the torque is otherwise; the gear box is widely applied to various industrial fields, such as the field of wind power generation, the field of vehicles, the field of machine tools and the like.
The gear box in the prior art adopts the externally meshed gears to realize the change of speed and moment, but the externally meshed gear box has a complex structure, meshing impact can be generated in the operation process, noise corresponding to the meshing frequency of the gears is generated, friction noise is generated between tooth surfaces due to relative sliding, the bearing is seriously abraded, and the service life is low.
Therefore, a new technical solution is needed to solve the above technical problems.
SUMMERY OF THE UTILITY MODEL
The application provides an inner meshing planetary gear box which comprises a sun wheel, wherein a planetary wheel meshed with the sun wheel is arranged on the outer side of the sun wheel, the planetary wheel is in inner meshing with the sun wheel in surface contact, an inner gear ring meshed with the planetary wheel is arranged on the outer side of the planetary wheel, and the inner gear ring is in inner meshing with the planetary wheel in surface contact; a planet wheel supporting device is arranged on the planet wheel, and a secondary supporting device is arranged on the outer side of the planet wheel supporting device; the planet wheel supporting device comprises a planet wheel support I and a planet wheel support II which are matched with each other, the inner sides of the planet wheel support I and the planet wheel support II are both provided with a planet wheel placing groove and a sun wheel placing groove, and the planet wheel support I and the planet wheel support II are both provided with meshing holes for meshing a planet wheel and an inner gear ring; a support shaft is arranged on the outer side of the first planet wheel support, which is far away from the second planet wheel support, a through hole is formed in the support shaft, and the through hole is coaxial with the sun wheel; the outer side of the planet wheel support II, which deviates from the planet wheel support I, is provided with a mounting table, and the mounting table is provided with a mounting hole which is coaxial with the sun wheel.
As a preferable scheme, an inner wheel carrier rib is arranged between the first planet wheel carrier and the second planet wheel carrier.
As a preferable scheme, the secondary supporting device comprises a first shell plate and a second shell plate which are connected with two ends of the inner gear ring, a first shell hole is formed in the first shell plate, and the supporting shaft extends to the outer side of the first shell plate through the first shell hole; and the second outer shell plate is provided with a second outer shell hole, and the sun wheel extends to the outer side of the second outer shell plate through the second outer shell hole.
Preferably, the planet wheel bearings are arranged at two ends of the planet wheel.
Preferably, both ends of the sun gear are provided with sun gear bearings.
Preferably, bearings are arranged between the mounting table and the second shell hole and between the support shaft and the first shell hole.
As a preferred scheme, a frame body end cover is arranged on the outer side of the first shell hole, a first end cover hole is formed in the frame body end cover, and the support shaft extends to the outer side of the frame body end cover through the first end cover hole.
As a preferable scheme, a shaft end cover is arranged on the outer side of the second shell hole, a second end cover hole is formed in the shaft end cover, and the sun wheel extends to the outer side of the shaft end cover through the first end cover hole.
As a preferred scheme, a framework oil seal is arranged between the support shaft and the first end cover hole, and a framework oil seal is arranged between the sun gear and the second end cover hole.
The utility model adopts a double inner meshing and surface meshing mode to replace outer meshing and inner meshing of a plurality of planet wheels in the prior art, thereby not only increasing the torque, but also ensuring smaller size; therefore, the utility model has compact structure, small size and light weight; because the sun wheel and the planet wheel rotate in the same direction, the relative sliding speed is low, the friction is slight, the service life is long, the noise ratio is low, and the use of high rotating speed can be allowed.
Drawings
FIG. 1 is a schematic structural view of angle one of the present application;
FIG. 2 is a schematic structural view of angle two of the present application;
FIG. 3 is a structural schematic diagram of the sun gear and sun gear bearing engagement angle one of the present application;
FIG. 4 is a structural schematic diagram of a second angle at which the sun gear and the sun gear bearing of the present application are mated;
FIG. 5 is a structural schematic diagram of the angle one at which the planet wheel and the planet wheel bearing of the present application cooperate;
FIG. 6 is a structural schematic diagram of a second angle of the planet wheel and planet wheel bearing cooperation of the present application;
FIG. 7 is a schematic view of the sun gear, planet gear and inner gear ring matching structure of the present application;
fig. 8 is a structural schematic diagram of an angle one of the planet wheel supporting device;
FIG. 9 is a structural schematic diagram of a second angle of the planet wheel supporting device;
FIG. 10 is a schematic view of a planet carrier at an angle I;
FIG. 11 is a structural schematic diagram of a planet carrier at an angle two;
FIG. 12 is a schematic structural diagram of a planet carrier at two angles I;
FIG. 13 is a schematic structural diagram of a planet carrier at two angles II;
FIG. 14 is a schematic view of the position relationship between the inner ribs of the wheel carrier and the planet wheels;
FIG. 15 is a structural schematic of the inner ribs of the wheel frame;
FIG. 16 is a schematic view of the configuration of the closure panel at an angle one;
FIG. 17 is a schematic view of the configuration of the outer housing plate at angle two;
FIG. 18 is a schematic view of the configuration of the outer shell panel at angle one;
FIG. 19 is a schematic view of a second angle configuration of the outer shell panel;
FIG. 20 is a front view of the present application;
FIG. 21 is a cross-sectional view of FIG. 20A-A;
1. sun gear 2, planet gear 3, inner gear ring 4 and planet gear supporting device
5. Secondary supporting device 6, mounting lug 7, planet wheel support I8 and planet wheel support II
9. Planet wheel placing groove 10, sun wheel placing groove 11, meshing hole 12 and support shaft
13. Through hole 14, mounting table 15, mounting hole 16 and inner rib of wheel carrier
17. Inner rib placing groove 18, first outer shell plate 19, second outer shell plate 20 and first outer shell hole
21. A second shell hole 22, a planet wheel bearing 23, a sun wheel bearing 24 and a bearing
25. Frame end cover 26, shaft end cover 27 and framework oil seal.
Detailed Description
The following describes in detail a specific embodiment of the present invention with reference to fig. 1 to 21. It should be noted that the specific embodiments described herein are only for illustrating and explaining the present invention and are not to be construed as limiting the present invention.
The first embodiment is as follows:
the embodiment provides an inner meshing planetary gear box, which comprises a sun gear 1, wherein a planetary gear 2 meshed with the sun gear 1 is arranged on the outer side of the sun gear 1, the planetary gear 2 is in surface contact inner meshing with the sun gear 1, an inner gear ring 3 meshed with the planetary gear 2 is arranged on the outer side of the planetary gear 2, and the inner gear ring 3 is in surface contact inner meshing with the planetary gear 2; the matching of the sun wheel 1, the planet wheels 2 and the inner gear ring 3 realizes double inner meshing and surface meshing, replaces outer meshing and inner meshing of a plurality of planet wheels in the prior art, can increase torque and also ensures smaller size; a planet wheel supporting device 4 is arranged on the planet wheel 2, and a secondary supporting device 5 is arranged on the outer side of the planet wheel supporting device 4; through the arrangement of the simple supporting structure, the supporting structure is simple and can play a good supporting role.
Preferably, in order to facilitate the installation and fixation of the present invention, the outer side of the inner gear ring 3 is symmetrically provided with mounting lugs 6, and the mounting lugs 6 and the inner gear ring 3 can be connected by well-known connection methods such as welding, bonding, screw connection and the like, and can also be molded in an integral molding manner.
When the planetary gear support device is used in the embodiment, the planetary gear 2 is supported by the planetary gear support device 4 and is used for providing power for the planetary gear 2; the secondary supporting device 5 further supports the planet wheel 2 and the sun wheel 1, so that the structure is simple and the support is stable; the inner gear ring 3 is fixed, the sun gear 1, the planet gear 2 and the planet gear supporting device 4 can be used as a driving part or a driven part, and when the sun gear 1 is used as the driving part and the planet gear 2 and the planet gear supporting device 4 are used as the driven part, the speed reduction transmission is realized; on the contrary, when the planet wheel 2 and the planet wheel supporting device 4 are used as driving parts and the sun wheel 1 is used as a driven part, the speed-up transmission is realized.
Example two:
the present embodiment describes the planet wheel supporting device 4, specifically:
the planet wheel supporting device 4 comprises a planet wheel support I7 and a planet wheel support II 8 which are matched with each other, and preferably, the planet wheel support I7 and the planet wheel support II 8 are connected through screws; the inner sides of the first planet wheel support 7 and the second planet wheel support 8 are both provided with a planet wheel placing groove 9 and a sun wheel placing groove 10, the planet wheel placing groove 9 is used for being in contact with a planet wheel 2, the sun wheel placing groove 10 is used for being in contact with a sun wheel 1, the shapes and the sizes of the planet wheel placing groove 9 and the sun wheel placing groove 10 are respectively arranged according to the shapes and the sizes of the planet wheel 2 and the sun wheel 1, and the utility model is not particularly limited; the planet wheel support I7 and the planet wheel support II 8 are also provided with meshing holes 11 for meshing the planet wheels 2 with the inner gear ring 3; a support shaft 12 is arranged on the outer side of the first planet wheel support 7, which is far away from the second planet wheel support 8, preferably, the first planet wheel support 7 and the support shaft 12 are integrally formed, and can also be fixed by adopting connection modes well known in the prior art, such as bonding, welding, screw connection and the like; the supporting shaft 12 is provided with a through hole 13, and the through hole 13 is coaxial with the sun gear 1; the outer side of the planet wheel support II 8, which is far away from the planet wheel support I7, is provided with a mounting table 14, preferably, the planet wheel support II 8 and the mounting table 14 are integrally formed, and can also be fixed by adopting connection modes well known in the prior art, such as bonding, welding, screw connection and the like; the mounting table 14 is provided with a mounting hole 15, and the mounting hole 15 is coaxial with the sun gear 1.
Preferably, in order to improve the stability and prolong the service life of the planetary gear carrier, an inner wheel carrier rib 16 is arranged between the first planetary gear carrier 7 and the second planetary gear carrier 8, and more preferably, inner rib placing grooves 17 are arranged on the inner sides of the first planetary gear carrier 7 and the second planetary gear carrier 8; the inner rib 16 of the wheel frame is of a semicircular shape, the inner rib 16 of the wheel frame is arranged on the inner side of the planet wheel 2, the inner rib 16 of the wheel frame is respectively connected with the first planet wheel support 7 and the second planet wheel support 8, preferably, the inner rib 16 of the wheel frame is connected with the first planet wheel support 7 through screws, and in the same way, the inner rib 16 of the wheel frame is connected with the second planet wheel support 8 through screws.
Example three:
the present embodiment describes the secondary support device 5, specifically:
the secondary supporting device 5 comprises a first outer shell plate 18 and a second outer shell plate 19 which are connected with two ends of the inner gear ring 3, preferably, the first outer shell plate 18 and the inner gear ring 3, and the second outer shell plate 19 and the inner gear ring 3 are connected through screws, so that the secondary supporting device is convenient to disassemble; a first shell hole 20 is formed in the center of the first shell plate 18, and the support shaft 12 extends to the outer side of the first shell plate 18 through the first shell hole 20; a second casing hole 21 is formed in the center of the second casing plate 19, and one end of the sun gear 1 extends to the outer side of the second casing plate 19 through the second casing hole 21.
The embodiment further supports the sun wheel 1 and the planet wheel 2, the strength of the utility model is improved, and the secondary support structure is simple, convenient to use and low in manufacturing cost.
Example four:
in this embodiment, in order to reduce the friction coefficient of the sun gear 1 and the planet gear 2 in the motion process, and ensure the rotation precision thereof.
The two sides of the planet wheel 2 are provided with planet wheel bearings 22: the planet wheel bearing 22 is a bearing in the prior art, the utility model does not specifically limit the bearing, and the description of adopting the planet wheel bearing 22 is to distinguish the installation position of the bearing; the method specifically comprises the following steps: the two sides of the planet wheel 2 are provided with bearing installation parts, a planet wheel bearing 22 is installed in each bearing installation part, and the two ends of the planet wheel 2 are respectively contacted with the planet wheel placing grooves 9 of the first planet wheel support 7 and the second planet wheel support 8.
A sun wheel bearing 23 is arranged at the contact position of the sun wheel 1 and the planet wheel supporting device 4; specifically, the outer side of the sun gear 1 is provided with a sun gear bearing 23, the inner sides of the first planet gear support 7 and the second planet gear support 8 are provided with bearing placing grooves matched with the sun gear bearing, and the bearing placing grooves are communicated with the planet gear placing grooves 9.
In conclusion, due to the adoption of the technical scheme, the double-inner-meshing and surface-meshing mode is adopted to replace the outer-meshing mode and the inner-meshing mode of a plurality of planet wheels in the prior art, so that the torque can be increased, and the smaller size is ensured; therefore, the utility model has compact structure, small size and light weight; because the sun wheel and the planet wheel rotate in the same direction, the relative sliding speed is low, the friction is slight, the service life is long, the noise ratio is low, and the use of high rotating speed can be allowed.
The devices and connection relationships that are not described in detail above all belong to the prior art, and the present invention is not described in detail herein.
The standard parts used in the application document can be purchased from the market, and can be customized according to the description of the specification and the description of the attached drawings, the specific connection mode of each part adopts conventional means such as mature bolts, rivets, welding and the like in the prior art, and machines, parts and equipment adopt conventional models in the prior art.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are included in the scope of protection of the present invention.
It should be noted that, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various combinations that are possible in the present application will not be described separately.
In addition, any combination of the various embodiments of the present application can be made, and the present application should be considered as disclosed in the present application as long as the combination does not depart from the spirit of the present application.
Claims (9)
1. An inner meshing planetary gear box comprises a sun wheel (1), and is characterized in that a planetary wheel (2) meshed with the sun wheel (1) is arranged on the outer side of the sun wheel (1), the planetary wheel (2) is in surface contact with the sun wheel (1) in inner meshing, an inner gear ring (3) meshed with the planetary wheel (2) is arranged on the outer side of the planetary wheel (2), and the inner gear ring (3) is in surface contact with the planetary wheel (2) in inner meshing; a planet wheel supporting device (4) is arranged on the planet wheel (2), and a secondary supporting device (5) is arranged on the outer side of the planet wheel supporting device (4); the planet wheel supporting device (4) comprises a planet wheel support I (7) and a planet wheel support II (8) which are matched with each other, the inner sides of the planet wheel support I (7) and the planet wheel support II (8) are respectively provided with a planet wheel placing groove (9) and a sun wheel placing groove (10), and the planet wheel support I (7) and the planet wheel support II (8) are respectively provided with an engaging hole (11) for engaging the planet wheel (2) with the inner gear ring (3); a support shaft (12) is arranged on the outer side of the first planet wheel support (7) departing from the second planet wheel support (8), a through hole (13) is formed in the support shaft (12), and the through hole (13) is coaxial with the sun wheel (1); the outer side of the planet wheel support II (8) departing from the planet wheel support I (7) is provided with a mounting table (14), a mounting hole (15) is formed in the mounting table (14), and the mounting hole (15) is coaxial with the sun wheel (1).
2. An inter-engaging planetary gearbox according to claim 1, characterised in that an inner wheel carrier rib (16) is provided between the planet wheel carrier one (7) and the planet wheel carrier two (8).
3. An inter-engaging planetary gear box according to claim 1, wherein the secondary support means (5) comprises a first casing plate (18) and a second casing plate (19) connected to both ends of the ring gear (3), the first casing plate (18) is provided with a first casing hole (20), and the support shaft (12) extends to the outside of the first casing plate (18) through the first casing hole (20); and a second shell hole (21) is formed in the second shell plate (19), and the sun gear (1) extends to the outer side of the second shell plate (19) through the second shell hole (21).
4. An inter-engaging planetary gearbox according to claim 1, characterised in that the planet wheels (2) are fitted with planet wheel bearings (22) at both ends.
5. A crescent planetary gearbox according to claim 1, wherein sun gear bearings (23) are mounted at both ends of the sun gear (1).
6. A crescent planetary gearbox according to claim 3, wherein bearings (24) are provided between the mounting platform (14) and the second housing aperture (21) and between the support shaft (12) and the first housing aperture (20).
7. An inter-engaging planetary gear box according to claim 3, wherein, a first end cover (25) is provided outside the first housing hole, a first end cover hole is provided on the first end cover (25), and the support shaft (12) extends to the outside of the first end cover (25) through the first end cover hole.
8. An inter-engaging planetary gearbox according to claim 7, characterized in that the outside of the second housing hole (21) is provided with a second shaft end cover (26), the second shaft end cover (26) is provided with a second end cover hole, and the sun gear (1) extends to the outside of the shaft end cover (26) through the first end cover hole.
9. An inter-engaging planetary gear according to claim 8, wherein a skeleton oil seal (27) is provided between the sun gear (1) and the second end cover hole, and a skeleton oil seal (27) is provided between the support shaft (12) and the first end cover hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220314728.1U CN216242182U (en) | 2022-02-17 | 2022-02-17 | Inner gearing planetary gear box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220314728.1U CN216242182U (en) | 2022-02-17 | 2022-02-17 | Inner gearing planetary gear box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216242182U true CN216242182U (en) | 2022-04-08 |
Family
ID=80962704
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220314728.1U Expired - Fee Related CN216242182U (en) | 2022-02-17 | 2022-02-17 | Inner gearing planetary gear box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216242182U (en) |
-
2022
- 2022-02-17 CN CN202220314728.1U patent/CN216242182U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220408 |