CN212868231U - Sun gear transmission structure and planetary gear box - Google Patents
Sun gear transmission structure and planetary gear box Download PDFInfo
- Publication number
- CN212868231U CN212868231U CN202021672193.2U CN202021672193U CN212868231U CN 212868231 U CN212868231 U CN 212868231U CN 202021672193 U CN202021672193 U CN 202021672193U CN 212868231 U CN212868231 U CN 212868231U
- Authority
- CN
- China
- Prior art keywords
- sun gear
- tooth
- transmission
- crowned
- crowned tooth
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- General Details Of Gearings (AREA)
- Retarders (AREA)
Abstract
The utility model relates to a planetary gear technical field discloses a sun gear transmission structure and planetary gear case, and wherein sun gear transmission structure includes: the sun gear is provided with a transmission shaft, one end of the transmission shaft, far away from the sun gear, is provided with a step, the step is provided with a crowned tooth structure, the crowned tooth structure comprises a first crowned tooth and a second crowned tooth, the first crowned tooth is arranged on the circumferential surface of the large-diameter section of the step, and the second crowned tooth is arranged on the step surface of the step; the shaft sleeve is provided with an inner hole, the shaft sleeve is sleeved on the transmission shaft through the inner hole, the wall surface of the inner hole is provided with a third crowned tooth and a boss, the side surface, close to the transmission shaft, of the boss is provided with a fourth crowned tooth, the third crowned tooth is meshed with the first crowned tooth, and the fourth crowned tooth is meshed with the second crowned tooth. The sun gear transmission structure can meet the requirement of floating installation of the sun gear and can improve the transmission effectiveness of the sun gear.
Description
Technical Field
The utility model relates to a planetary gear technical field especially relates to a sun gear transmission structure and planetary gear case.
Background
In a wind generating set, because the rotating speed of a wind wheel is very low and can not reach the rotating speed required by the power generation of a generator, the generator needs to obtain the corresponding rotating speed through the speed increase of a planetary gear box, and the planetary gear box plays an important role in wind power equipment as an important core component.
In a planetary transmission mechanism of a wind power gear box, in order to prevent a planetary gear from being unbalanced in load to cause transmission errors, a sun gear matched with the planetary gear is generally in a floating design. Since the sun gear and the gears of the parallel stages are usually connected by splines, the splines float radially, which causes fretting wear between the meshing surfaces of the splines between the inner spline and the outer spline, thereby generating a large amount of heat and fine particles. Excessive temperature and high concentration of fine particles accelerate the wear of the spline teeth of the spline, which easily causes the failure of the spline connection and the transmission of the sun gear.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a sun gear transmission structure, this sun gear transmission structure can enough satisfy the requirement of the unsteady installation of sun gear, can avoid again that the sun gear transmission takes place to become invalid, improves the driven validity of sun gear.
To achieve the purpose, the utility model adopts the following technical proposal:
a sun gear transmission structure comprising: the sun gear is provided with a transmission shaft, one end of the transmission shaft, far away from the sun gear, is provided with a step, a crowned tooth structure is arranged at the step, the crowned tooth structure comprises a first crowned tooth and a second crowned tooth, the first crowned tooth is arranged on the circumferential surface of the large-diameter section of the step, and the second crowned tooth is arranged on the step surface of the step; the axle sleeve, be equipped with the hole on the axle sleeve, the axle sleeve passes through the hole cover is located the transmission shaft, be equipped with third cydariform tooth and boss on the wall of hole, the boss is close to be equipped with fourth cydariform tooth on the side of transmission shaft, third cydariform tooth with first cydariform tooth meshing, fourth cydariform tooth with second cydariform tooth meshing.
As a preferred scheme of the sun gear transmission structure, the shaft sleeve is rotatably connected to a box body of the planetary gear box through a bearing, a first oil path is arranged on the box body, a second oil path is arranged on the shaft sleeve, one end of the second oil path is communicated with the first oil path, and the other section of the second oil path is communicated with the crowned tooth structure.
As a preferable scheme of the sun gear transmission structure, an oil chamber is formed between a meshing position of the third crown gear and the first crown gear, a meshing position of the fourth crown gear and the second crown gear, a wall surface of the inner hole, a large-diameter section of the step, and a side surface of the boss, and the oil chamber is communicated with the second oil chamber.
As a preferable scheme of the sun gear transmission structure, the sun gear transmission structure further includes a slip ring, and the slip ring is sleeved on the shaft sleeve and is clamped between the box body and the shaft sleeve.
As a preferable scheme of the sun gear transmission structure, a communicating groove is formed in the slip ring, and the communicating groove is communicated between the first oil path and the second oil path.
As an optimal scheme of a sun gear transmission structure, the shaft sleeve is provided with an annular groove, a snap ring is arranged in the annular groove, and the slip ring clamp is arranged between the snap ring and the bearing.
As a preferred scheme of the sun gear transmission structure, the sun gear transmission structure further comprises a transmission wheel, and the transmission wheel is sleeved and connected to one end, far away from the sun gear, of the shaft sleeve.
As a preferred scheme of a sun gear transmission structure, the transmission wheel is connected to the shaft sleeve in an interference fit manner, and the slip ring is connected to the shaft sleeve in an interference fit manner.
As a preferred scheme of a sun gear transmission structure, one end, far away from the sun gear, of the transmission shaft is provided with a limiting groove, a limiting disc is arranged in the limiting groove, and the end face, close to the sun gear, of the limiting disc abuts against the boss.
Another object of the utility model is to provide a planetary gear box, this planetary gear box volume is less, and the quality is lighter, and manufacturing cost is lower.
To achieve the purpose, the utility model adopts the following technical proposal:
a planetary gearbox comprises the sun gear transmission structure of any one of the technical schemes.
The utility model has the advantages that:
the utility model provides a sun wheel transmission structure, the sun wheel transmission structure comprises a sun wheel and a shaft sleeve, a transmission shaft is arranged on the sun wheel, one end of the transmission shaft far away from the sun wheel is provided with a step with a crowned tooth structure, the periphery of the large diameter section of the step is provided with a first crowned tooth, the step surface of the step is provided with a second crowned tooth, the shaft sleeve is arranged on the transmission shaft through an inner hole sleeve, the wall surface of the inner hole is provided with a third crowned tooth and a boss, the side surface of the boss close to the transmission shaft is provided with a fourth crowned tooth, the third crowned tooth is meshed with the first crowned tooth, the fourth crowned tooth is meshed with the second crowned tooth, the third crowned tooth and the first crowned tooth which are meshed with each other can provide compensation for the radial displacement generated in the sun wheel transmission process, the fourth crowned tooth and the second crowned tooth which are meshed with each other can provide compensation, the floating amount is prevented from being relieved by increasing the axial size of the sun wheel, and the axial size of the sun wheel is reduced, so that the sun wheel has a compact transmission structure and low manufacturing cost; in addition, the sun gear transmission structure can transmit torque through the third crowned teeth and the first crowned teeth which are meshed with each other, and the fourth crowned teeth and the second crowned teeth which are meshed with each other can play a role in assisting in transmitting torque, so that the torque transmission capability of the sun gear transmission structure is improved, and the transmission effectiveness of the sun gear is further ensured.
Drawings
FIG. 1 is a schematic view of a sun gear transmission according to an embodiment of the present invention;
fig. 2 is an enlarged view at a in fig. 1.
In the figure:
1. a sun gear; 11. a drive shaft; 111. a step; 112. a crowned tooth structure; 1121. a first crowned tooth; 1122. a second crowned tooth; 2. a shaft sleeve; 21. an inner bore; 22. a third crowned tooth; 23. a boss; 24. a fourth crowned tooth; 25. a second oil passage; 3. a bearing; 4. a box body; 41. a first oil passage; 5. an oil chamber; 6. a slip ring; 61. a communicating groove; 7. a snap ring; 8. a driving wheel; 9. a limiting disc.
Detailed Description
In order to make the technical problem solved by the present invention, the technical solutions adopted by the present invention and the technical effects achieved by the present invention clearer, the following will be described in further detail with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by the skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The technical solution of the sun gear transmission structure provided by the present invention is described below with reference to the accompanying drawings and specific embodiments.
The embodiment provides a sun gear transmission structure, it is used for carrying out the transmission to sun gear 1, as shown in fig. 1 and fig. 2, this sun gear transmission structure includes sun gear 1, axle sleeve 2 and drive wheel 8, be equipped with transmission shaft 11 on the sun gear 1, be equipped with hole 21 on the axle sleeve 2, axle sleeve 2 locates the one end that transmission shaft 11 kept away from sun gear 1 through hole 21 cover, 8 covers of drive wheel are established and are connected in the one end that sun gear 1 was kept away from to axle sleeve 2, the moment of torsion that 8 received of drive wheel is passed through axle sleeve 2 and is transmitted to sun gear 1 on, in order to realize transmitting power to sun gear 1 on. In this embodiment, the driving wheel 8 is connected to the shaft sleeve 2 in an interference fit manner, so that the driving wheel 8 is firmly connected to the shaft sleeve 2, and power transmission between the driving wheel 8 and the shaft sleeve 2 is facilitated. One end of the transmission shaft 11, which is far away from the sun gear 1, is provided with the crowned tooth structure 112, and the transmission shaft 11 is in transmission connection with the shaft sleeve 2 through the crowned tooth structure 112, so that the requirement of floating installation of the sun gear 1 can be met, the transmission effectiveness of the sun gear 1 can be improved, and fretting wear caused by meshing of key teeth can be effectively prevented.
Preferably, the transmission shaft 11 and the sun gear 1 are integrally formed, so that the overall connection strength between the sun gear 1 and the transmission shaft 11 can be improved, and the stability of power transmission between the transmission shaft 11 and the sun gear 1 is ensured.
Specifically, one end of the transmission shaft 11 away from the sun gear 1 is provided with a step 111, and the crown tooth structure 112 is arranged at the step 111. The crown tooth structure 112 includes a first crown tooth 1121 and a second crown tooth 1122, the first crown tooth 1121 is disposed on the circumferential surface of the large-diameter section of the step 111, and the second crown tooth 1122 is disposed on the step surface of the step 111; the wall surface of the inner hole 21 is provided with a third crown tooth 22 and a boss 23, the third crown tooth 22 is positioned on one side of the boss 23 close to the sun gear 1, the side surface of the boss 23 close to the transmission shaft 11 is provided with a fourth crown tooth 24, the third crown tooth 22 is meshed with the first crown tooth 1121, the fourth crown tooth 24 is meshed with the second crown tooth 1122, and the transmission connection of the transmission shaft 11 and the shaft sleeve 2 is realized.
It should be noted that in the present embodiment, in addition to the power transmission between the transmission shaft 11 and the shaft sleeve 2 being performed by the third crown tooth 22 and the first crown tooth 1121, the fourth crown tooth 24 and the second crown tooth 1122, which are engaged with each other, have a function of assisting torque transmission, so that the flexibility of the sun gear transmission structure can be improved. Moreover, the shaft sleeve 2 and the transmission shaft 11 are in transmission in a mode that the third crown tooth 22 is meshed with the first crown tooth 1121 and the fourth crown tooth 24 is meshed with the second crown tooth 1122, the influence of the floating amount of the transmission shaft 11 does not need to be relieved by increasing the axial size of the transmission shaft, and the axial size of the transmission shaft 11 is small, so that the transmission structure of the sun gear 1 is compact, and the manufacturing cost of the sun gear 1 and the manufacturing cost of the transmission shaft 11 are reduced.
Through the structure, the third crown tooth 22 and the first crown tooth 1121 which are meshed with each other can compensate the radial displacement generated in the transmission process of the sun gear 1, and the fourth crown tooth 24 and the second crown tooth 1122 which are meshed with each other can compensate the angular displacement generated in the transmission process of the sun gear 1, so that the requirement of floating installation of the sun gear 1 can be met, and the transmission effectiveness of the sun gear 1 can be improved.
In the present embodiment, the sleeve 2 is rotatably connected to the casing 4 of the planetary gearbox by means of bearings 3. Be equipped with first oil circuit 41 on the box 4, be equipped with second oil circuit 25 on the axle sleeve 2, the one end of second oil circuit 25 communicates in first oil circuit 41, the other end communicates in crown gear structure 112 department, first oil circuit 41 and second oil circuit 25 are used for letting in lubricating oil to crown gear structure 112 department, lubricate the teeth of a cogwheel of meshing to crown gear structure 112 department, heat and the tiny particulate matter of meshing teeth of a cogwheel department can also be taken away to lubricating oil, alleviate the wearing and tearing of the teeth of a cogwheel of meshing, be favorable to prolonging the life of crown gear structure 112, thereby improve the driven validity of sun gear 1.
Preferably, an oil chamber 5 is formed between the meshing position of the third crown tooth 22 and the first crown tooth 1121, the meshing position of the fourth crown tooth 24 and the second crown tooth 1122, the wall surface of the inner hole 21, the large-diameter section of the step 111 and the side surface of the boss 23, the oil chamber 5 is communicated with the second oil path 25, and the oil chamber 5 can temporarily store lubricating oil conveyed by the second oil path 25, so that forced lubrication can be performed on the third crown tooth 22 and the first crown tooth 1121 which are meshed with each other, and the fourth crown tooth 24 and the second crown tooth 1122 which are meshed with each other.
In this embodiment, the sun gear transmission structure further includes a slip ring 6, and the slip ring 6 is sleeved on the shaft sleeve 2 and is clamped between the box 4 and the shaft sleeve 2. The slip ring 6 is provided with a communicating groove 61, the communicating groove 61 is communicated between the first oil path 41 and the second oil path 25, lubricating oil conveyed from the first oil path 41 can enter the second oil path 25 through the communicating groove 61 and then enter the oil chamber 5, and finally meshed gear teeth are lubricated.
Preferably, the outer peripheral surface of the shaft sleeve 2 is provided with a ring groove, a snap ring 7 is arranged in the ring groove, and the slip ring 6 is clamped between the snap ring 7 and the bearing 3, namely, the snap ring 7 supports the slip ring 6 on the bearing 3, so that the slip ring 6 is positioned. More preferably, the slip ring 6 is connected to the shaft sleeve 2 in an interference fit manner, so that deformation caused by the interference fit between the driving wheel 8 and the shaft sleeve 2 can be reduced, the third crown tooth 22 and the fourth crown tooth 24 can be arranged at one end of the shaft sleeve 2, the floating amount of the sun gear 1 can not be influenced while the axial sizes of the sun gear 1 and the transmission shaft 11 are reduced, and the reduction of the material cost of the sun gear 1 is facilitated.
In this embodiment, one end of the transmission shaft 11, which is far away from the sun gear 1, is provided with a limiting groove, a limiting disc 9 is arranged in the limiting groove, and the end surface of the limiting disc 9, which is close to the sun gear 1, abuts against the boss 23, so that the boss 23 is clamped between the limiting disc 9 and the step 111, the axial positioning of the transmission shaft 11 is realized, and the axial movement of the transmission shaft 11 and the sun gear 1 can be prevented.
The embodiment also provides a planetary gear box, which comprises the sun gear transmission structure in the technical scheme, and the planetary gear box adopts the sun gear transmission structure in the technical scheme, so that the sun gear 1 and the transmission shaft 11 thereof have shorter axial dimension and more compact transmission structure, and the planetary gear box has smaller volume, lighter weight and lower manufacturing cost.
It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, rearrangements and substitutions will now occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A sun gear transmission structure, comprising:
the sun gear (1) is provided with a transmission shaft (11), one end, far away from the sun gear (1), of the transmission shaft (11) is provided with a step (111), a crowned tooth structure (112) is arranged at the step (111), the crowned tooth structure (112) comprises a first crowned tooth (1121) and a second crowned tooth (1122), the first crowned tooth (1121) is arranged on the circumferential surface of a large-diameter section of the step (111), and the second crowned tooth (1122) is arranged on the step surface of the step (111);
axle sleeve (2), be equipped with hole (21) on axle sleeve (2), axle sleeve (2) pass through hole (21) cover is located transmission shaft (11), be equipped with third cydariform tooth (22) and boss (23) on the wall of hole (21), boss (23) are close to be equipped with fourth cydariform tooth (24) on the side of transmission shaft (11), third cydariform tooth (22) with first cydariform tooth (1121) meshing, fourth cydariform tooth (24) with second cydariform tooth (1122) meshing.
2. The sun gear transmission structure according to claim 1, wherein the shaft sleeve (2) is rotatably connected to a box body (4) of the planetary gearbox through a bearing (3), a first oil path (41) is arranged on the box body (4), a second oil path (25) is arranged on the shaft sleeve (2), one end of the second oil path (25) is communicated with the first oil path (41), and the other end of the second oil path is communicated with the crowned tooth structure (112).
3. The sun gear transmission structure according to claim 2, wherein an oil chamber (5) is formed between a meshing point of the third crown tooth (22) and the first crown tooth (1121), a meshing point of the fourth crown tooth (24) and the second crown tooth (1122), a wall surface of the inner hole (21), a large-diameter section of the step (111), and a side surface of the boss (23), and the oil chamber (5) is communicated with the second oil chamber (25).
4. The sun gear transmission structure according to claim 2, further comprising a slip ring (6), wherein the slip ring (6) is sleeved on the shaft sleeve (2) and is clamped between the box body (4) and the shaft sleeve (2).
5. The sun gear transmission structure according to claim 4, wherein a communication groove (61) is provided in the slip ring (6), and the communication groove (61) communicates between the first oil passage (41) and the second oil passage (25).
6. The sun gear transmission structure according to claim 4, wherein the shaft sleeve (2) is provided with an annular groove, a snap ring (7) is arranged in the annular groove, and the slip ring (6) is clamped between the snap ring (7) and the bearing (3).
7. The sun gear transmission structure according to claim 4, further comprising a transmission wheel (8), wherein the transmission wheel (8) is sleeved and connected to one end of the shaft sleeve (2) far away from the sun gear (1).
8. A sun gear transmission according to claim 7, wherein the transmission wheel (8) is connected to the sleeve (2) by interference fit, and the slip ring (6) is connected to the sleeve (2) by interference fit.
9. The sun gear transmission structure according to claim 1, wherein a limiting groove is formed in one end, away from the sun gear (1), of the transmission shaft (11), a limiting disc (9) is arranged in the limiting groove, and an end face, close to the sun gear (1), of the limiting disc (9) abuts against the boss (23).
10. An epicyclic gearbox comprising a sun gear transmission according to any of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021672193.2U CN212868231U (en) | 2020-08-12 | 2020-08-12 | Sun gear transmission structure and planetary gear box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021672193.2U CN212868231U (en) | 2020-08-12 | 2020-08-12 | Sun gear transmission structure and planetary gear box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212868231U true CN212868231U (en) | 2021-04-02 |
Family
ID=75222245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021672193.2U Active CN212868231U (en) | 2020-08-12 | 2020-08-12 | Sun gear transmission structure and planetary gear box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212868231U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113483083A (en) * | 2021-07-22 | 2021-10-08 | 中国船舶重工集团公司第七0三研究所 | Sun gear floating structure for high-speed planetary transmission |
-
2020
- 2020-08-12 CN CN202021672193.2U patent/CN212868231U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113483083A (en) * | 2021-07-22 | 2021-10-08 | 中国船舶重工集团公司第七0三研究所 | Sun gear floating structure for high-speed planetary transmission |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN210600110U (en) | Reduction gearbox for turbine fracturing | |
| CN212868231U (en) | Sun gear transmission structure and planetary gear box | |
| CN205978366U (en) | Gearbox that possesses power of getting function | |
| CN201142618Y (en) | Gear reducer motor of hub | |
| US4628754A (en) | Output gear of automatic transmission | |
| CN215980767U (en) | Miniaturized lightweight second grade planetary reducer | |
| CN214367677U (en) | Walking driving device and engineering machinery | |
| CN218267171U (en) | Steering knuckle device | |
| CN213360989U (en) | Gearbox and PTO transmission device thereof | |
| CN112112555A (en) | Driving device for low-clearance drilling machine | |
| CN213361005U (en) | Transmission structure of gearbox output shaft and differential mechanism assembly | |
| JPH0821520A (en) | Shaft connector of high speed rotary portion | |
| CN216975707U (en) | Connection structure of transmission shaft and planet carrier and wind power gear box | |
| CN214661775U (en) | Special speed reducer for portable boring machine | |
| CN216742662U (en) | Walking motor that wearability is good | |
| CN218718664U (en) | Novel power takeoff | |
| CN210240489U (en) | Starting gear assembly for motorcycle | |
| CN204878651U (en) | Fan acceleration rate case and vice draw bail of sun gear and planet carrier spline thereof | |
| CN214008008U (en) | Gear box | |
| CN211335441U (en) | Coaxial electric drive axle and vehicle with same | |
| CN215257640U (en) | Differential case of inter-wheel differential | |
| CN217603312U (en) | Precise connecting assembly for transmission gear box | |
| CN218408464U (en) | Gearbox lubricating structure | |
| CN211231449U (en) | Large-torque planetary reducer | |
| CN106763614A (en) | A kind of multistage compact high-speed gear box with hydraulic clutch |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20230207 Granted publication date: 20210402 |
|
| PP01 | Preservation of patent right | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20230327 Granted publication date: 20210402 |
|
| PD01 | Discharge of preservation of patent |