CN204729558U - A kind of difference tooth variable speed planetary gear case - Google Patents
A kind of difference tooth variable speed planetary gear case Download PDFInfo
- Publication number
- CN204729558U CN204729558U CN201520262018.9U CN201520262018U CN204729558U CN 204729558 U CN204729558 U CN 204729558U CN 201520262018 U CN201520262018 U CN 201520262018U CN 204729558 U CN204729558 U CN 204729558U
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- ring gear
- planetary gear
- fixing ring
- gear
- end cap
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Abstract
The utility model discloses a kind of difference tooth variable speed planetary gear case, comprise casing, the sun gear be connected with input shaft, the planetary gear set matched with sun gear is provided with in described casing, described planetary gear set arranged outside has the fixing ring gear that simultaneously matches with planetary gear set and rotates ring gear, described fixing ring gear maintains static dynamic, described rotation ring gear is driven by planetary gear set and rotates, the poor number of teeth order of fixing ring gear and rotation ring gear equals the planetary pinion number in planetary gear set, and described rotation ring gear is provided with output shaft.Planetary gear set in the utility model acts on fixing ring gear simultaneously and rotates ring gear, because fixing ring gear is fixedly installed, and fixing ring gear has less poor number of teeth order with rotation ring gear, rotate ring gear slow rotation under the drive of planetary gear set and the impact of fixing ring gear, realize great speed change with less accessory, effectively improve the output torque of motor.
Description
Technical field
The utility model relates to field of gears, particularly relates to a kind of epicyclic gearbox utilizing poor tooth to carry out speed change.
Background technique
Existing motor can export very high rotating speed, but in actual applications, usually needs to change the final rotating speed exported, to adapt to various uses, therefore need on motor, increase gear-box and carry out speed change.Existing gear-box adopts gear train to carry out speed change usually, and gear train realizes speed change by adopting the engaged transmission of gear in multiple different tooth footpath.The shortcoming of gear train transmission is that no-load voltage ratio is little, accessory is many and take up room large.When needs improve motor torque greatly, when namely significantly reducing the rotating speed of motor output, the gear quantity that gear train transmission needs is many, is difficult to realize in limited space.
Model utility content
Therefore, the purpose of this utility model is to provide a kind of poor tooth variable speed planetary gear case adopting less accessory just can realize large velocity ratio.
The technological scheme that the utility model adopts is:
A kind of difference tooth variable speed planetary gear case, comprise casing, the sun gear be connected with input shaft, the planetary gear set matched with sun gear is provided with in described casing, described planetary gear set arranged outside has the fixing ring gear that simultaneously matches with planetary gear set and rotates ring gear, described fixing ring gear maintains static dynamic, described rotation ring gear is driven by planetary gear set and rotates, the poor number of teeth order of fixing ring gear and rotation ring gear equals the planetary pinion number in planetary gear set, and described rotation ring gear is provided with output shaft.
As the further improvement of technique scheme, described casing comprises upper end cap and lower end cap, and described fixing ring gear and upper end cap and/or lower end cap are composed of a fixed connection casing.
As the further improvement of technique scheme, described upper end cap is provided with output shaft hole, described output shaft stretches out through output shaft hole, is provided with bearing between output shaft and upper end cap.
As the further improvement of technique scheme, described lower end cap is provided with input shaft bore, described input shaft connects sun gear through input shaft bore, is provided with bearing between described input shaft and lower end cap.
The beneficial effects of the utility model are:
Planetary gear set in the utility model acts on fixing ring gear simultaneously and rotates ring gear, because fixing ring gear is fixedly installed, and fixing ring gear has less poor number of teeth order with rotation ring gear, rotate ring gear slow rotation under the drive of planetary gear set and the impact of fixing ring gear, realize great speed change with less accessory, effectively improve the output torque of motor.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Fig. 1 is the parts exploded perspective view of poor tooth variable speed planetary gear case of the present utility model;
Fig. 2 is the sectional view of poor tooth variable speed planetary gear case of the present utility model.
Drawing reference numeral illustrates: 1, lower end cap; 2, fixing ring gear; 3, sun gear; 4, planetary pinion; 5, ring gear is rotated; 6, output shaft; 7, upper end cap.
Embodiment
As shown in Figure 1 and Figure 2, the one difference tooth variable speed planetary gear case that the utility model provides, comprise the casing be made up of upper end cap 7, lower end cap 1 and fixing ring gear 2, fixing ring gear 2 is bolted to connection with upper end cap 7, lower end cap 1 respectively, lower end cap 1 is provided with input shaft bore, upper end cap 7 is provided with output shaft hole.
Input shaft (not shown) enters casing through input shaft bore, is provided with bearing between input shaft and lower end cap 1.The sun gear 3 be connected with input shaft is provided with in casing, and the planetary gear set 4 matched with sun gear 3, be also provided with in casing and rotate ring gear 5.Fixing ring gear 2 and rotation ring gear 5 are set in the outside of planetary gear set 4 respectively, and planetary gear set 4 acts on fixing ring gear 2 simultaneously and rotates ring gear 5, rotate ring gear 5 and drive rotation by planetary gear set 4.Rotate on ring gear 5 and be provided with output shaft 6, output shaft 6 stretches out through output shaft hole, is provided with bearing between output shaft 6 and upper end cap 7.
In the present embodiment, 3 planetary pinions are provided with in planetary gear set 4.Fixing ring gear 2 and the number of teeth rotated between ring gear 5 unequal, poor number of teeth order between the two equals the planetary pinion number in planetary gear set 4, and namely poor number of teeth order between the two equals 3.
When planetary gear set 4 is rotated time, because fixing ring gear 2 is fixedly installed, the rotating speed rotating ring gear 5 is subject to fixing ring gear 2 and rotates the poor number of teeth order impact between ring gear 5, when the number of teeth of being on duty order is large, the rotating speed rotating ring gear 5 is fast, and speed no-load voltage ratio is little, the number of teeth of being on duty order hour, the rotating speed rotating ring gear 5 is slow, and speed no-load voltage ratio is large.In the present embodiment, fixing ring gear 2 and the poor number of teeth order rotated between ring gear 5 equal 3, and the rotating speed rotating ring gear 5 significantly declines, and makes output shaft 6 obtain larger output torque, realize larger speed change with less accessory, effectively improve the output torque of motor.
Above concrete structure and sized data illustrate preferred embodiment of the present utility model, but the utility model is created and is not limited to described embodiment, those of ordinary skill in the art also can make all equivalent variations or replacement under the prerequisite without prejudice to the utility model spirit, and these equivalent distortion or replacement are all included in the application's claim limited range.
Claims (4)
1. a poor tooth variable speed planetary gear case, comprise casing, the sun gear (3) be connected with input shaft is provided with in described casing, the planetary gear set (4) matched with sun gear (3), it is characterized in that: described planetary gear set (4) arranged outside has the fixing ring gear (2) that simultaneously matches with planetary gear set (4) and rotates ring gear (5), described fixing ring gear (2) maintains static dynamic, described rotation ring gear (5) is driven by planetary gear set (4) and rotates, the poor number of teeth order of fixing ring gear (2) and rotation ring gear (5) equals the planetary pinion number in planetary gear set (4), described rotation ring gear (5) is provided with output shaft (6).
2. one difference tooth variable speed planetary gear case according to claim 1, is characterized in that: described casing comprises upper end cap (7) and lower end cap (1), and described fixing ring gear (2) and upper end cap (7) and/or lower end cap (1) are composed of a fixed connection casing.
3. one difference tooth variable speed planetary gear case according to claim 2, it is characterized in that: (7) are provided with output shaft hole to described upper end cap, described output shaft (6) stretches out through output shaft hole, is provided with bearing between output shaft (6) and upper end cap (7).
4. one difference tooth variable speed planetary gear case according to claim 2, it is characterized in that: (1) is provided with input shaft bore to described lower end cap, described input shaft connects sun gear (3) through input shaft bore, is provided with bearing between described input shaft and lower end cap (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520262018.9U CN204729558U (en) | 2015-04-27 | 2015-04-27 | A kind of difference tooth variable speed planetary gear case |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520262018.9U CN204729558U (en) | 2015-04-27 | 2015-04-27 | A kind of difference tooth variable speed planetary gear case |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204729558U true CN204729558U (en) | 2015-10-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520262018.9U Active CN204729558U (en) | 2015-04-27 | 2015-04-27 | A kind of difference tooth variable speed planetary gear case |
Country Status (1)
| Country | Link |
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| CN (1) | CN204729558U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021208641A1 (en) * | 2020-04-17 | 2021-10-21 | 宁波博菱电器股份有限公司 | Blender |
-
2015
- 2015-04-27 CN CN201520262018.9U patent/CN204729558U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021208641A1 (en) * | 2020-04-17 | 2021-10-21 | 宁波博菱电器股份有限公司 | Blender |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |