CN201013844Y - Planet peed-reducing device without planetary supporter - Google Patents
Planet peed-reducing device without planetary supporter Download PDFInfo
- Publication number
- CN201013844Y CN201013844Y CNU2007200193781U CN200720019378U CN201013844Y CN 201013844 Y CN201013844 Y CN 201013844Y CN U2007200193781 U CNU2007200193781 U CN U2007200193781U CN 200720019378 U CN200720019378 U CN 200720019378U CN 201013844 Y CN201013844 Y CN 201013844Y
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- CN
- China
- Prior art keywords
- gear
- planetary
- output shaft
- rotational inner
- planet carrier
- 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.)
- Expired - Fee Related
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Abstract
The utility model pertains to a gear transmission device, in particular to a planetary decelerator without a planet carrier which comprises a shell body, a sun gear positioned in the shell body and a fixed internal gear fixedly positioned on the shell body. The utility model is characterized in that a rotating internal gear is positioned in the shell body, a plurality of rotatablely single gear ring planetary gears that are supported by the planet carrier are positioned among the rotating internal gear, the fixed internal gear and the sun gear; the internal side of the single gear ring planetary gear is meshed with the sun gear, one end of the external side of the single gear ring planetary gear is meshed with the fixed internal gear, and the other end is meshed with the rotating internal gear; the sun gear, the rotating internal gear, the fixed internal gear and the single gear ring planetary gear are all involute gears. The rotating internal gear is provided with an output shaft, and a bearing is positioned between the output shaft and the shell body. The utility model has the advantages of simple structure, low manufacturing cost and long service life.
Description
Technical field
The utility model belongs to gear drive, is specifically related to a kind of no planet carrier planetary reduction gear.
Background technique
At present, the planetary reduction gear transmission device of prior art belongs to and has the planetary NGWN planetary driving device of monodentate circle.This transmission device generally is provided with a sun gear, be fixed on the fixed annulus on the housing, be provided with a plurality of rotary monodentate circle planetary pinions that are bearing on the planet carrier between sun gear and the fixed annulus, the rotational inner gear of monodentate circle planetary pinion while with sun gear and the fixed annulus and the other end meshes; The planetary planet carrier of supporting monodentate circle is transmitting torque not, does not belong to basic building block, and this part belongs to the part of porous, and difficulty of processing is big, and the manufacture cost height in case accuracy of manufacturing does not reach requirement, just causes excessive erection stress easily, or part can not be assembled.
Summary of the invention
It is a kind of simple in structure that the purpose of this utility model is to provide, and manufacturing cost is low, the no planet carrier planetary reduction gear of velocity ratio 36.7～300.
The utility model is achieved through the following technical solutions: promptly a kind of no planet carrier planetary reduction gear, comprise housing, be installed in the sun gear in the housing, be fixedly mounted on the fixed annulus on the housing, it is characterized in that being provided with in the housing rotational inner gear, rotational inner gear, be provided with a plurality of rotary monodentate circle planetary pinion that is bearing on the planet carrier between fixed annulus and the sun gear, planetary inboard of monodentate circle and sun gear engagement, one end in its outside and fixed annulus engagement, the other end and rotational inner gear engagement, sun gear, rotational inner gear, fixed annulus, monodentate circle planetary pinion is involute gear, rotational inner gear is provided with output shaft, between output shaft and the housing bearing is housed.
The planetary number of monodentate circle can be 2 or 3 or 4, and the planetary quantity of described monodentate circle is that the number of teeth of fixed annulus and rotational inner gear is poor, two deep groove ball bearings are housed between output shaft and the housing, also can adorn other forms of rolling bearing between output shaft and the housing.
Rotational inner gear and output shaft can be integral structures, also can be split-type structurals, when adopting split-type structural, can connect by key between rotational inner gear and the output shaft, also can adopt interference fit to connect.
The utlity model has simple in structurely, manufacturing cost is low, the advantage of long service life.Compared to existing technology, no planet carrier planetary reduction gear has saved planet carrier, requirement on machining accuracy is low, low cost of manufacture, but each monodentate circle planetary pinion radial floating under stressed unbalanced condition, make each monodentate circle planetary pinion can share load uniformly, thereby prolonged the working life of device.
Description of drawings
Fig. 1 is the utility model embodiment 1 a structural representation;
Fig. 2 is the A-A sectional view of Fig. 1;
Fig. 3 is the utility model embodiment 2 a structural representation;
Fig. 4 is the A-A sectional view of Fig. 3;
Fig. 5 is the utility model embodiment 3 a structural representation;
Fig. 6 is the A-A sectional view of Fig. 5.
As shown in FIG.: 1 monodentate circle planetary pinion, 2 sun gears, 3 monodentate circle planetary pinions, 4 fixed annuluss, 5 housings, 6 rotational inner gears, 7 deep groove ball bearings, 8 deep groove ball bearings, 9 output shafts, 10 monodentate circle planetary pinions, 11 monodentate circle planetary pinions.
Embodiment
As Fig. 1, shown in Figure 2, fixed annulus 4 is fixedly mounted on the housing 5, sun gear 2 is connected with power input mechanism, rotational inner gear 6 and output shaft 9 are integral structure, two bearings are installed between output shaft 9 and the housing 5, be respectively deep groove ball bearing 7 and deep groove ball bearing 8, sun gear 2, fixed annulus 4, be provided with monodentate circle planetary pinion 1 and monodentate circle planetary pinion 3 between the rotational inner gear 6, sun gear 2 numbers of teeth get 15, the monodentate circle planetary pinion 1 and 3 the number of teeth get 33, and the number of teeth of fixed annulus 4 gets 81, and the number of teeth of rotational inner gear 6 gets 83, the velocity ratio of this speed reducer is 265.6
As shown in Figure 3, Figure 4, be provided with monodentate circle planetary pinion 1, monodentate circle planetary pinion 3 and monodentate circle planetary pinion 10 between sun gear 2, fixed annulus 4, the rotational inner gear 6, sun gear 2 numbers of teeth get 18, the monodentate circle planetary pinion 1 and 3 and 10 the number of teeth get 50, the number of teeth of fixed annulus 4 gets 117, the number of teeth of rotational inner gear 6 gets 120, and the velocity ratio of this speed reducer is 300, and other are with embodiment 1.
As Fig. 5, shown in Figure 6, be provided with monodentate circle planetary pinion 1, monodentate circle planetary pinion 3, monodentate circle planetary pinion 10 and monodentate circle planetary pinion 11 between sun gear 2, fixed annulus 4, the rotational inner gear 6, sun gear 2 numbers of teeth get 37, the monodentate circle planetary pinion 1,3,10 and 11 the number of teeth get 9, the number of teeth of fixed annulus 4 gets 55, the number of teeth of rotational inner gear 6 gets 59, and the velocity ratio of this speed reducer is 36.7, and other are with embodiment 1.
Embodiment of the present utility model is not limited to the above, and the combination by the number of teeth between sun gear, fixed annulus, rotational inner gear, the respective number monodentate circle planetary pinion can realize that range of transmission ratio is 36.7 to 300.
Among all embodiments in the utility model, rotational inner gear and output shaft also can adopt split-type structural, can connect by key between rotational inner gear and the output shaft, also can adopt the mode of interference fit to connect, also other forms of rolling bearing can be installed between output shaft and the housing.
Claims (6)
1. no planet carrier planetary reduction gear, comprise housing, be installed in the sun gear in the housing, be fixedly mounted on the fixed annulus on the housing, it is characterized in that being provided with in the housing rotational inner gear, rotational inner gear, be provided with monodentate circle planetary pinion between fixed annulus and the sun gear, planetary inboard of monodentate circle and sun gear engagement, one end in its outside and fixed annulus engagement, the other end and rotational inner gear engagement, sun gear, rotational inner gear, fixed annulus, monodentate circle planetary pinion is involute gear, rotational inner gear is provided with output shaft, between output shaft and the housing rolling bearing is housed.
2. no planet carrier planetary reduction gear according to claim 1 is characterized in that the planetary number of monodentate circle can be 2 or 3 or 4, and the planetary quantity of described monodentate circle is that the number of teeth of fixed annulus and rotational inner gear is poor; Rolling bearing between output shaft and the housing is a deep groove ball bearing.
3. no planet carrier planetary reduction gear according to claim 1 and 2 is characterized in that rotational inner gear and output shaft are integral structure.
4. no planet carrier planetary reduction gear according to claim 1 and 2 is characterized in that rotational inner gear and output shaft are split-type structural.
5. no planet carrier planetary reduction gear according to claim 4 is characterized in that being connected by key between rotational inner gear and the output shaft.
6. no planet carrier planetary reduction gear according to claim 4 is characterized in that rotational inner gear and cooperating of output shaft are interference fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200193781U CN201013844Y (en) | 2007-03-15 | 2007-03-15 | Planet peed-reducing device without planetary supporter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200193781U CN201013844Y (en) | 2007-03-15 | 2007-03-15 | Planet peed-reducing device without planetary supporter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201013844Y true CN201013844Y (en) | 2008-01-30 |
Family
ID=39025637
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200193781U Expired - Fee Related CN201013844Y (en) | 2007-03-15 | 2007-03-15 | Planet peed-reducing device without planetary supporter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201013844Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102367859A (en) * | 2011-09-06 | 2012-03-07 | 常熟市迅达粉末冶金有限公司 | Gear box |
-
2007
- 2007-03-15 CN CNU2007200193781U patent/CN201013844Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102367859A (en) * | 2011-09-06 | 2012-03-07 | 常熟市迅达粉末冶金有限公司 | Gear box |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080130 Termination date: 20100315 |