CN202251899U - Supporting structure of bearing in speed reducer - Google Patents
Supporting structure of bearing in speed reducer Download PDFInfo
- Publication number
- CN202251899U CN202251899U CN2011203380678U CN201120338067U CN202251899U CN 202251899 U CN202251899 U CN 202251899U CN 2011203380678 U CN2011203380678 U CN 2011203380678U CN 201120338067 U CN201120338067 U CN 201120338067U CN 202251899 U CN202251899 U CN 202251899U
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- CN
- China
- Prior art keywords
- bearing
- roller bearing
- supporting structure
- ring
- planetary
- 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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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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/54—Systems consisting of a plurality of bearings with rolling friction
- F16C19/541—Systems consisting of juxtaposed rolling bearings including at least one angular contact bearing
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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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
- F16C19/24—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for radial load mainly
- F16C19/26—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for radial load mainly with a single row of rollers
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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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
- F16C19/34—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load
- F16C19/38—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers
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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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2361/00—Apparatus or articles in engineering in general
- F16C2361/61—Toothed gear systems, e.g. support of pinion shafts
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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
- F16H57/00—General details of gearing
- F16H57/08—General details of gearing of gearings with members having orbital motion
- F16H2057/085—Bearings for orbital gears
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Support Of The Bearing (AREA)
- Retarders (AREA)
Abstract
The utility model discloses a supporting structure of a bearing in a speed reducer, wherein the speed reducer is a planetary gear speed reducer; the supporting structure comprises a planetary frame, and a planetary shaft mounted on the planetary frame; two bearings are axially arranged in parallel on the planetary shaft; two bearings on the planetary shaft include a spherical roller bearing and a circular roller bearing. The supporting structure of the bearing not only has strong capacity on load bearing, but also has reliable work, convenience of assembling and adjusting, and low cost.
Description
Technical field
The utility model relates to retarder, is specifically related to a kind of supporting structure of retarder middle (center) bearing.
Background technique
In existing retarder drive technology field; Hard flank of tooth planetary type gear transmission unit has characteristics such as speed ratio is big, volume is little, bearing capacity height; Be used widely in essential industry departments such as wind-power electricity generation, metallurgy, building materials; Wind-power electricity generation industry particularly, the main step-up gear of the whole world 70% wind power generating set all adopts the planetary pinion transmission.Along with the develop rapidly of wind generating technology in the world, the transmission power of planetary type gear transmission unit is increasing, reached 5 megawatts at present, and reliability requirement is higher.Blower fan planetary type gear transmission unit with one 1.5 megawatt is an example, if break down, needs it is hung oneself from 70 meters high pylons; Again it is lifted up after fixing; Therefore expense is very high, requires the planetary type gear transmission unit of blower fan in a single day to devote oneself to work after the operation, and big fault does not have.Through facts have proved, the mechanical failure majority of wind power generating set planetary type gear transmission unit is from the premature failure of planetary pinion spring bearing, for this reason; The various countries technician has designed multiple planetary bearing support assembly according to planetary pinion job requirement heavy duty, shock resistance, long lifetime and lightweight characteristics; Common mainly contains three kinds: a kind of is on planet axis, to be arranged side by side two single-row cylinder full type roller bearings, and the basic dynamic load rating of single-row cylinder full type roller bearing is high, and this structural type is the most popular at present; Generally believe the most reliable; In being fit to, the large planetary transmission device, but because single-row cylinder full type roller bearing is a German INA company aims at fan design and produce complex process; Supply falls short of demand, costs an arm and a leg; Another kind is on planet axis, to be arranged side by side two spheric roller bearings, and the basic dynamic load rating of spheric roller bearing is the highest, and price is minimum; The designing and calculating life-span is the highest; But owing to add inevitable error in man-hour, the Internal and external cycle end face does not line up usually, though alignd in the Internal and external cycle exterior edge face during assembling; But make the dislocation that contacts between inside and outside raceway and the roller; Thereby cause actual life and designing and calculating life-span too wide in the gap, reliability is undesirable, and this structure is eliminated by external big wind-powered electricity generation manufacturing company; The third is on planet axis, to be arranged side by side two single-row tapered roller bearings, and the basic dynamic load rating of single-row tapered roller bearing is higher, and this structure is fit to small-sized planetary driving device, and reliability is better, but the bearing price is higher, and the assembling adjustment is inconvenient.
The model utility content
The purpose of the utility model is to overcome the defective that exists in the existing technology, provides a kind of not only dynamic load bearing capacity strong, and reliable operation, the supporting structure of assembling easy to adjust and the bearing that cost is low.
For realizing above-mentioned purpose, the technological scheme of the utility model is the supporting structure of a kind of retarder middle (center) bearing of design, and described retarder is a planet wheel decelerator; Described supporting structure comprises planet carrier and planet axis, and said planet axis is fixedly mounted on the planet carrier, on said planet axis, axially is provided with two bearings side by side; It is characterized in that; In two bearings on the said planet axis, one is spheric roller bearing, and another is the annulus roller bearing.
Wherein optimized technical scheme is, between the inner ring of said spheric roller bearing and annulus roller bearing, supply ring is installed, and distance ring is installed between the outer ring; The outer end of said spheric roller bearing and annulus roller bearing inner ring is by inner spring back-up ring axial limiting, and the outer end of outer ring is by outer spring back-up ring axial limiting.
The advantage and the beneficial effect of the utility model are: since the supporting structure of this retarder middle (center) bearing adopted two kinds dissimilar; But spheric roller bearing that boundary dimension is the same and annulus roller bearing bear planetary working load; Their basic dynamic load rating is the highest in all annulars bearing with rolling contact under the identical appearance size condition; It is the strongest bearing of bearing capacity; Therefore help improving the life-span and the functional reliability of planetary pinion spring bearing, annulus roller bearing and spheric roller bearing manufacturing process are simple, and cost is low.Spheric roller bearing is being born 50% radial force and less axial force in the utility model, and bears the function of axially locating, because its Internal and external cycle can axial float, can bring into play its potential bearing capacity reliably; And the annulus roller bearing is being born other 50% radial force, and it not only possesses spheric roller bearing self-aligning and the strong characteristic of bearing capacity, but also has the function that bearing capacity takes place not influence after the displacement to axial Internal and external cycle." Internal and external cycle is the placement property to axial " of annulus roller bearing plays two key effects in the utility model; The first does not influence proper functioning and the characteristic performance of spheric roller bearing, and it two can adjust to the radial clearance of two kinds of bearings equally, has improved the problem of two bearings and planetary pinion unbalance loading, thus the working life of having improved bearing and gear.Not only the dynamic load bearing capacity is strong, and functional reliability is good, install easy to adjust, in having solved, the high-power planetary pinion heavy load transmission condition lower supporting bearing life-span is short, the problem that rate of fault is high, the bearing purchase cost has also descended at least 50%.
Description of drawings
Fig. 1 is the supporting structure schematic representation of the utility model retarder middle (center) bearing.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the embodiment of the utility model is further described.Following examples only are used for more clearly explaining the technological scheme of the utility model, and can not limit the protection domain of the utility model with this.
As shown in Figure 1; The utility model is a kind of supporting structure of retarder middle (center) bearing, and described retarder is a planet wheel decelerator, and described supporting structure comprises planet carrier 1 and planet axis 2; Planet axis 2 is fixedly mounted on the planet carrier 1; On planet axis 2, axially be provided with two bearings side by side, one of them is a spheric roller bearing 3, and another is for being stranded ring roller bearing 4.The pure radial load ability of spheric roller bearing 3 is strong; Can bear and axially reach united load; Bigger angular error is arranged during permission work; Can the initial angle error of shaft axis be compensated, be used as one of planetary spring bearing, therefore can play the effect of axial float self-aligning with it; The pure radial load ability of annulus roller bearing 4 is stronger, and the angular error when allowing work equally, key are its good rigidity, and Internal and external cycle is axially after the dislocation, and contacting between inside and outside raceway and the roller is still fine.Therefore, can give full play to the axially locating of spheric roller bearing 3 and the function of self-aligning at this with it.Label 9 is a planetary pinion among the figure.
Fig. 1 illustrates between the inner ring of spheric roller bearing 3 and annulus roller bearing 4 supply ring 5 is installed, and distance ring 6 is installed between the outer ring; Axial limiting is carried out by inner spring back-up ring 7 and outer spring back-up ring 8 respectively in the outside of spheric roller bearing 3 and annulus roller bearing 4 Internal and external cycles.Supply ring 5 and the axially locating of outer spring back-up ring 8 realizations to spheric roller bearing 3 and annulus roller bearing 4 inner rings, distance ring 6 and the axially locating of inner spring back-up ring 7 realizations to spheric roller bearing 3 and annulus roller bearing 4 inner rings.When planetary pinion was worked, spheric roller bearing 4 was born about 50% radial load and very little axial force and is brought into play the axially locating effect.The outer ring of spheric roller bearing 4 can move axially self-aligning under the radial force effect, make roller and the raceway camber line centering of coincideing, and spherical bearing roller and raceway will be in normal contact condition operations; Annulus roller bearing 4 is also born about 50% radial load; Its outer ring in service can produce with the outer ring of spheric roller bearing 3 and smallly move axially and do not influence bearing capacity; Because barrel shaped roller can be adjusted automatically, make the raceway Line of contact remain on operation under the kilter.The characteristics of the utility model are: first adopts two different types of bearing configurations in the planetary pinion spring bearing; Select for use to greatest extent and have the heavy-duty bearing of high basic dynamic load rating; And bring into play as well as possiblely separately that speciality provides essential operating conditions for this class bearing, thereby the bearing capacity and the reliability of planetary pinion spring bearing have been improved most possibly.
The above only is the preferred implementation of the utility model; Should be understood that; For those skilled in the art; Under the prerequisite that does not break away from the utility model know-why, can also make some improvement and retouching, these improvement and retouching also should be regarded as the protection domain of the utility model.
Claims (2)
1. the supporting structure of a retarder middle (center) bearing, described retarder is a planet wheel decelerator, described supporting structure comprises planet carrier and planet axis; Said planet axis is fixedly mounted on the planet carrier; On said planet axis, axially be provided with two bearings side by side, it is characterized in that, in two bearings on the said planet axis; One is spheric roller bearing, and another is the annulus roller bearing.
2. the supporting structure of retarder middle (center) bearing according to claim 1 is characterized in that, between the inner ring of said spheric roller bearing and annulus roller bearing, supply ring is installed, and distance ring is installed between the outer ring; The outer end of said spheric roller bearing and annulus roller bearing inner ring is by inner spring back-up ring axial limiting, and the outer end of outer ring is by outer spring back-up ring axial limiting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203380678U CN202251899U (en) | 2011-09-08 | 2011-09-08 | Supporting structure of bearing in speed reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203380678U CN202251899U (en) | 2011-09-08 | 2011-09-08 | Supporting structure of bearing in speed reducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202251899U true CN202251899U (en) | 2012-05-30 |
Family
ID=46113142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203380678U Expired - Fee Related CN202251899U (en) | 2011-09-08 | 2011-09-08 | Supporting structure of bearing in speed reducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202251899U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103234017A (en) * | 2013-05-02 | 2013-08-07 | 重庆齿轮箱有限责任公司 | Gear box clutch |
| CN106151392A (en) * | 2016-07-20 | 2016-11-23 | 浙江双环传动机械股份有限公司 | A kind of load-balancing device of herringbone bear Gear Planet Transmission |
| CN114112379A (en) * | 2021-11-19 | 2022-03-01 | 中国直升机设计研究所 | Method for quickly replacing fault test piece at output end of main speed reducer without deviation |
-
2011
- 2011-09-08 CN CN2011203380678U patent/CN202251899U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103234017A (en) * | 2013-05-02 | 2013-08-07 | 重庆齿轮箱有限责任公司 | Gear box clutch |
| CN103234017B (en) * | 2013-05-02 | 2015-11-18 | 重庆齿轮箱有限责任公司 | A kind of gear box clutch |
| CN106151392A (en) * | 2016-07-20 | 2016-11-23 | 浙江双环传动机械股份有限公司 | A kind of load-balancing device of herringbone bear Gear Planet Transmission |
| CN114112379A (en) * | 2021-11-19 | 2022-03-01 | 中国直升机设计研究所 | Method for quickly replacing fault test piece at output end of main speed reducer without deviation |
| CN114112379B (en) * | 2021-11-19 | 2023-05-23 | 中国直升机设计研究所 | Quick and unbiased main speed reducer output end fault test piece replacement method |
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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: 20120530 Termination date: 20120908 |