CN203730666U - Planet and small tooth difference structure integrated speed reducer - Google Patents
Planet and small tooth difference structure integrated speed reducer Download PDFInfo
- Publication number
- CN203730666U CN203730666U CN201420098364.3U CN201420098364U CN203730666U CN 203730666 U CN203730666 U CN 203730666U CN 201420098364 U CN201420098364 U CN 201420098364U CN 203730666 U CN203730666 U CN 203730666U
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- China
- Prior art keywords
- planet
- shaft
- input shaft
- speed reducer
- output
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- Expired - Fee Related
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
- F16H1/32—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
- F16H1/32—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear
- F16H2001/323—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear comprising eccentric crankshafts driving or driven by a gearing
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Abstract
The utility model discloses a planet and small tooth difference structure integrated speed reducer which comprises a shell, an input shaft, a diversion planet wheel transmission pair composed of at least two planet wheels and a sun wheel, a small tooth difference meshing transmission pair formed by meshing an inner gear ring with a small tooth difference planet wheel fixed on an eccentric sleeve of a planet wheel shaft, and an integrated planet carrier formed by fixedly connecting a first output frame and a second output frame. A conical roller bearing is connected between the first output frame as well as the second output frame and the planet wheel shaft, the first output frame is provided with an input shaft ring protruding towards one side of an input end, a first conical roller bearing is connected between the input shaft ring and the input shaft, an output shaft is arranged at the center of the second output frame, a second conical roller bearing is connected between the output shaft as well as the input shaft and the shell, and a needle roller bearing is mounted between the eccentric sleeve and the small tooth difference planet wheel. The planet and small tooth difference structure integrated speed reducer has the advantages of simple structure, supportiveness of multipole combination, high rigidity and strength, high stability and wide speed ratio range.
Description
Technical field
The utility model relates to a kind of speed reducer, specifically the speed reducer of a kind of planet and few teeth difference structure fusion formula.
Background technique
The speed reducer of planetary pinion and few teeth difference mechanism fusion type has the advantages that volume is little, speed ratio is large, bearing capacity is strong, efficiency is high, can be widely used in the drive unit of the industrial departments such as electric power, oil, mine, engineering machinery, lifting transport, chemical industry, weaving, pharmacy, food, printing and dyeing, military project.
Chinese patent 201010229195.9 discloses a kind of planetary speed reducer with small tooth number difference, the power input shaft and the power output disc that comprise housing, be rotatably assorted with housing, on power input shaft, in circumferencial direction secure fit, sun gear is set, engage with sun gear at least two planet wheels are set, the planet wheel shaft of planet wheel arranges eccentric bushing; On housing, with the concentric locking pin tooth that arranges of power input shaft, engage cycloid wheel is set with locking pin tooth few teeth difference; Each eccentric bushing is rotatably assorted with it through cycloid wheel respectively vertically, planet wheel shaft end penetrates vertically power output disc and is rotatably assorted at circumferencial direction with it, the flank profil of described cycloid wheel is done first enveloped motion by locking pin tooth and is formed, and the flank profil of locking pin tooth is to be formed by the motion of cycloid crop rotation twice-enveloping.The application has improved the stability of transmission to a certain extent, and has doublet contact characteristic, is beneficial to lubricated.But in actual use, but, because be subject to structural limitations, cannot further improve bearing capacity, affect working life: first, input shaft adopts cantilever structure, rigidity and less stable in the time running up; Secondly, planet wheel shaft is also because be subject to the restriction of bearing structure, and crankshaft diameter of axle size is less than normal, affects bearing capacity; Moreover, between the outer ring of power output disc and housing, rolling bearing is installed, because the internal diameter size of bearing is finite value, the radial structure that has limited to this speed reducer further does greatly; In addition, few teeth difference part is cycloid pinwheel planetary gear transmission system, has also limited ratio coverage.
Model utility content
The utility model technical issues that need to address are to provide that a kind of rigidity and intensity are large, the planet of good stability and the speed reducer of few teeth difference structure fusion formula.
For solving the problems of the technologies described above, the technological scheme that the utility model adopts is:
The speed reducer of a kind of planet and few teeth difference structure fusion formula, comprise housing, input shaft, at least two planet wheels and the shunting planet gear transmission pair that is fixed on the sun gear composition on input shaft, ring gear engage the few teeth difference engagement driving pair of formation with the fewer differential teeth planetary wheel being fixed on the eccentric bushing of planet wheel shaft, by being arranged on the correspondence at planet wheel shaft two ends at the first output frame and the corresponding fit planet carrier being composed of a fixed connection at the second output frame of output terminal of input end, between described the first output frame and planet wheel shaft, between the second output frame and planet wheel shaft, be all connected by tapered roller bearing, described the first output frame setting input axle collar of to input end one side protruding coaxial with input shaft, between the input axle collar and input shaft, be connected by the first tapered roller bearing, the second output Jia center is provided with to output terminal one side and protrudes into the output shaft outside housing, between output shaft, input shaft and housing, is connected by the second tapered roller bearing, between the eccentric bushing of described planet wheel shaft and fewer differential teeth planetary wheel, needle bearing is installed.
Further improvement of the utility model is: described few teeth difference engagement driving is secondary is Involute Small Teeth Difference Planetary Gearing, and ring gear and fewer differential teeth planetary wheel are short tooth involute spur gear processed.
Further improvement of the utility model is: the position of the corresponding input shaft of described housing and output shaft arranges respectively to the bearing installing ring of input end and output terminal protrusion, the second tapered roller bearing between housing and input shaft and output shaft is arranged in bearing installing ring, the bearing (ball) cover that the arranged outside of bearing installing ring is fixedly connected with housing.
Further improvement of the utility model is: each one first tapered roller bearing of installing between the two ends of the endoporus of the described input axle collar and input shaft, arranges isolation supporting sleeve between two first tapered roller bearings.
Further improvement of the utility model is: the many groups of speed reducers that are made up of described housing, input shaft, shunting planet gear transmission pair, few teeth difference engagement driving pair, fit planet carrier are set and form cascaded structure, the output shaft of upper one group of speed reducer, as the input shaft of next group speed reducer, forms multi-stage speed-reducing mechanism.
Owing to having adopted technique scheme, the technological progress that the utility model is obtained is:
The utility model is combined with few teeth difference engagement driving pair secondary shunting planet gear transmission, be installed in the fit planet carrier as output block, adopt the planet carrier export structure of Planetary Gear Transmission to replace the bearing pin guide export structure of few teeth difference transmission, ring gear stator component of designs simplification and a set of combined rotor member, improve transmission efficiency, be convenient to multistage-combination.The two ends of fit planet carrier arrange outwardly stomidium and axle construction, and between the bearing installing ring of housing, coordinate installation the second tapered roller bearing, make speed reducer can bear larger axial force, and bearing capacity and mechanical efficiency are all greatly improved.The size of planet wheel and fit planet carrier is not subject to the size restrictions of two ends the second tapered roller bearing yet, and it is very large that speed reducer can need do by operating mode.The utility model, by the power dividing of shunting planet wheel, has been realized multiple planet wheel shafts and has synchronously been inputted, and the structure of double reduction and multiple tooth engagement, has inertia little, the shock-resistant advantage little with vibration.Between the eccentric bushing of planet wheel shaft of the present utility model and fewer differential teeth planetary wheel, adopt needle bearing, because needle bearing internal-and external diameter difference is little, have in identical bore size situation at fewer differential teeth planetary wheel, can arrange thicker planet wheel shaft, greatly improve rigidity and the bearing capacity of planet wheel shaft.
The secondary Involute Small Teeth Difference Planetary Gearing that adopts of few teeth difference engagement driving of the present utility model, ring gear and planet wheel all adopt short tooth involute spur gear processed.First,, on the ring gear and planet wheel of same diameter, while arranging involute profile, the number of teeth, far more than arranging the cycloid number of teeth, makes speed reducer of the present utility model have larger speed ratio advantage.Secondly, cycloid pinwheel planetary gear transmission system is made the poor or two teeth difference transmission of a tooth more, and it is poor to adopt Involute Small Teeth Difference Planetary Gearing can conveniently make 1～8 tooth, same gear ring can be allotted eight kinds of velocity shooting types, make speed reducer of the present utility model there is larger ratio coverage, expanded the using scope of speed reducer.Finally, involute profile manufacturing technology maturation, manufactures, installation, maintenance cost is low, makes speed reducer of the present utility model have the larger market competitiveness.
The utility model is arranged in input shaft in the input axle collar of the first output frame of fit planet carrier, adopts two ends the first tapered roller bearing to support, and has strengthened structure stability, has reduced operational shock and noise.
To sum up, the utlity model has simple in structure, can multipolely combine, rigidity and intensity are large, good stability, advantage that ratio coverage is large.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is transmission principle figure of the present utility model.
Wherein, 1, input shaft, 2, sun gear, 3, planet wheel, 4, fit planet carrier, 41, first output frame, 411, input the axle collar, 42, second output frame, 5, planet wheel shaft, 6, ring gear, 7, fewer differential teeth planetary wheel, 8, output shaft, 9, tapered roller bearing, 91, the first tapered roller bearing, 92, the second tapered roller bearing, 10, needle bearing, 11, housing, 111, bearing installing ring, 12, eccentric bushing, 13, bearing (ball) cover.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further details:
The speed reducer of planet and few teeth difference structure fusion formula, as depicted in figs. 1 and 2, comprises housing 11, input shaft 1, shunting planet gear transmission pair, few teeth difference engagement driving pair, fit planet carrier 4.
Described shunting planet gear transmission pair comprises sun gear 2 and at least two planet wheels 3 of engagement driving.Sun gear 2 is fixed on the circumferencial direction of input shaft 1, and the external tooth engagement of sun gear 2 arranges 2～4 planet wheels, and in accompanying drawing, the number of planet wheel 3 is 3, and the center of each planet wheel 3 fixedly wears planet wheel shaft 5.
Each planet wheel 3 connects one group of few teeth difference engagement driving pair by planet wheel shaft 5.Described few teeth difference engagement driving pair comprises fewer differential teeth planetary wheel 7, the ring gear 6 of engagement driving.The journal axles such as described planet wheel shaft 5 is, by waiting cover of setting-up eccentricity in journal axle 12 to realize the installation of fewer differential teeth planetary wheel 7.In the present embodiment, two groups of positions with different eccentric eccentric bushing 12(few teeth difference engagement driving pairs that match each other are set on the circumference on planet wheel shaft 5 right sides can also be adjusted at the diverse location of planet wheel shaft according to actual needs, as be arranged on the left side of planet wheel shaft), each eccentric bushing 12 is installed needle bearing 10 along circumference, and needle bearing 10 excircles arrange fewer differential teeth planetary wheel 7.Described ring gear 6 is arranged on the madial wall of housing, and ring gear 6 engages with the fewer differential teeth planetary wheel 7 being fixed on planet wheel shaft 5 the few teeth difference engagement driving pair forming.Described few teeth difference engagement driving pair is Involute Small Teeth Difference Planetary Gearing, and ring gear 6 and fewer differential teeth planetary wheel 7 are short tooth involute spur gear processed.
Described fit planet carrier 4 comprises the first output frame 41 and the second output frame 42.Shown in the first output frame 41 correspondences be arranged on the left end of planet wheel shaft 5, corresponding with input end.The second output frame 42 correspondences are arranged on the right-hand member of planet wheel shaft 5, corresponding with output terminal.Between the first output frame 41 and the second output frame 42 and the two ends of planet wheel shaft 5, be connected by tapered roller bearing 9.
Described the first output frame 41 arranges the input axle collar 411 protruding to input end one side, inputs the axle collar 411 and coaxially arranges with input shaft.Between the two ends of the endoporus of the described input axle collar 411 and input shaft 1, each installation between one first tapered roller bearing 91, two first tapered roller bearings 91 installed and isolated supporting sleeve.The second output Jia42 center is provided with output shaft 8, and output shaft 8 mind-set output terminal one side from the second output frame 42 protrudes into hull outside, and output shaft 8 coaxially arranges with input shaft 1.
The position of the corresponding input shaft 1 of described housing 11 arranges the bearing installing ring 111 protruding to input end, and the position of the corresponding output shaft 8 of housing 11 arranges the bearing installing ring 111 protruding to output terminal.The second tapered roller bearing 92 is installed between housing 11 and input shaft 1 and output shaft 8, and described the second tapered roller bearing 92 is arranged in bearing installing ring 111, the bearing (ball) cover 13 that the arranged outside of bearing installing ring 111 is fixedly connected with housing 11.
Further, the utility model can be designed as multi-stage speed-reducing mechanism, the many groups of speed reducers that are made up of described housing 11, input shaft 1, shunting planet gear transmission pair, few teeth difference engagement driving pair, fit planet carrier 4 are set and form cascaded structure, the output shaft of upper one group of speed reducer, as the input shaft of next group speed reducer, forms multi-stage speed-reducing mechanism.Preferably, in the time that the utility model is multi-stage speed-reducing mechanism, can save the second tapered roller bearing 92 between output shaft 8 and housing 11.
Working principle of the present utility model is: input shaft drives planet wheel running by sun gear, planet wheel drives planet wheel shaft revolution, and then drive fewer differential teeth planetary wheel to engage with ring gear by tooth by the needle bearing at eccentric bushing place, engage one week, fewer differential teeth planetary wheel is around a number of teeth declinate degree of self gyration center reversion, this reversion action promotes fit planet carrier and output shaft reversion equal angular by planet wheel shaft, thereby realizes the output of slowing down.
Claims (5)
1. the speed reducer of a planet and few teeth difference structure fusion formula, comprise housing (11), input shaft (1), at least two planet wheels (3) and the shunting planet gear transmission pair that is fixed on sun gear (2) composition on input shaft (1), ring gear (6) engage the few teeth difference engagement driving pair of formation with the fewer differential teeth planetary wheel (7) being fixed on the eccentric bushing (12) of planet wheel shaft (5), by being arranged on the correspondence at planet wheel shaft (5) two ends at the first output frame (41) and the corresponding fit planet carrier (4) being composed of a fixed connection at the second output frame (42) of output terminal of input end, it is characterized in that: between described the first output frame (41) and planet wheel shaft (5), between the second output frame (42) and planet wheel shaft (5), be all connected by tapered roller bearing (9), described the first output frame (41) arranges the input axle collar (411) that to input end one side protrude coaxial with input shaft (1), between the input axle collar (411) and input shaft (1), be connected by the first tapered roller bearing (91), the center of the second output frame (42) is provided with to output terminal one side and protrudes into the output shaft (8) outside housing, between output shaft (8), input shaft (1) and housing (11), is connected by the second tapered roller bearing (92), between the eccentric bushing (12) of described planet wheel shaft (5) and fewer differential teeth planetary wheel (7), needle bearing (10) is installed.
2. the speed reducer of a kind of planet according to claim 1 and few teeth difference structure fusion formula, it is characterized in that: described few teeth difference engagement driving is secondary is Involute Small Teeth Difference Planetary Gearing, and ring gear (6) and fewer differential teeth planetary wheel (7) are short tooth involute spur gear processed.
3. according to a kind of planet described in claim 1 or 2 any one and the speed reducer of few teeth difference structure fusion formula, it is characterized in that: the position of the corresponding input shaft of described housing (11) and output shaft arranges respectively to the bearing installing ring (111) of input end and output terminal protrusion, the second tapered roller bearing (92) between housing (11) and input shaft (1) and output shaft (8) is arranged in bearing installing ring (111), the bearing (ball) cover (13) that the arranged outside of bearing installing ring (111) is fixedly connected with housing (11).
4. according to a kind of planet described in claim 1 or 2 any one and the speed reducer of few teeth difference structure fusion formula, it is characterized in that: each one first tapered roller bearing (91) of installing between the two ends of the endoporus of the described input axle collar (411) and input shaft (1), arranges isolation supporting sleeve between two first tapered roller bearings (91).
5. the speed reducer of a kind of planet according to claim 3 and few teeth difference structure fusion formula, it is characterized in that: the many groups of speed reducers that are made up of described housing (11), input shaft (1), shunting planet gear transmission pair, few teeth difference engagement driving pair, fit planet carrier (4) are set and form cascaded structure, the output shaft of upper one group of speed reducer, as the input shaft of next group speed reducer, forms multi-stage speed-reducing mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420098364.3U CN203730666U (en) | 2014-03-06 | 2014-03-06 | Planet and small tooth difference structure integrated speed reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420098364.3U CN203730666U (en) | 2014-03-06 | 2014-03-06 | Planet and small tooth difference structure integrated speed reducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203730666U true CN203730666U (en) | 2014-07-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420098364.3U Expired - Fee Related CN203730666U (en) | 2014-03-06 | 2014-03-06 | Planet and small tooth difference structure integrated speed reducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203730666U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107061637A (en) * | 2017-03-10 | 2017-08-18 | 安徽理工大学 | A kind of planetary transmission system of the double uniform flow dividing structure in parallel of planetary gear |
| CN107489737A (en) * | 2017-08-11 | 2017-12-19 | 周凤艳 | A kind of speed difference transmission mechanism and differential speed reducer |
| CN109027140A (en) * | 2018-09-30 | 2018-12-18 | 杭州星河传动机械研究院有限公司 | A kind of roll sleeve planetary reducer |
| CN110594364A (en) * | 2018-06-13 | 2019-12-20 | 斯凯孚公司 | Transmission assembly |
| CN113187871A (en) * | 2021-04-14 | 2021-07-30 | 太原科技大学 | Planet wheel speed reducer with output shaft capable of linearly reciprocating and application thereof |
-
2014
- 2014-03-06 CN CN201420098364.3U patent/CN203730666U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107061637A (en) * | 2017-03-10 | 2017-08-18 | 安徽理工大学 | A kind of planetary transmission system of the double uniform flow dividing structure in parallel of planetary gear |
| CN107489737A (en) * | 2017-08-11 | 2017-12-19 | 周凤艳 | A kind of speed difference transmission mechanism and differential speed reducer |
| CN110594364A (en) * | 2018-06-13 | 2019-12-20 | 斯凯孚公司 | Transmission assembly |
| CN109027140A (en) * | 2018-09-30 | 2018-12-18 | 杭州星河传动机械研究院有限公司 | A kind of roll sleeve planetary reducer |
| CN109027140B (en) * | 2018-09-30 | 2023-12-19 | 杭州星河传动机械研究院有限公司 | Rolling sleeve planetary speed reducer |
| CN113187871A (en) * | 2021-04-14 | 2021-07-30 | 太原科技大学 | Planet wheel speed reducer with output shaft capable of linearly reciprocating and application thereof |
| CN113187871B (en) * | 2021-04-14 | 2022-08-05 | 太原科技大学 | Planet wheel speed reducer with output shaft capable of linearly reciprocating |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140723 Termination date: 20180306 |
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| CF01 | Termination of patent right due to non-payment of annual fee |