CN103335012A - Sun gear shaft of wind power gear box - Google Patents
Sun gear shaft of wind power gear box Download PDFInfo
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- CN103335012A CN103335012A CN2013102811285A CN201310281128A CN103335012A CN 103335012 A CN103335012 A CN 103335012A CN 2013102811285 A CN2013102811285 A CN 2013102811285A CN 201310281128 A CN201310281128 A CN 201310281128A CN 103335012 A CN103335012 A CN 103335012A
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Abstract
The invention discloses a sun gear shaft of a wind power gear box. The invention is an inner hole-equipped integrated shaft gear consisting of a sun wheel (11), a support shaft (12) and an output shaft (13). A spiral groove (15) is disposed on the support shaft (12). The spiral groove (15) is along the circumferential direction of the support shaft (12) and is greater than one circle. The spiral groove (15) is equivalent to a moderate stiffness spring added between the sun wheel (11) and the output shaft (13), so that both axial floating and radial floating of the sun wheel (11) can be realized. The sun gear shaft provided in the invention has the advantages of: reducing the shock and vibration of a planetary gear transmission mechanism on a next stage structure, improving performance of the planetary gear transmission mechanism, and ensuring high speed output level smooth transmission.
Description
Technical field
The present invention relates to the planetary gear mechanism in a kind of wind-powered electricity generation gear-box, be specifically related to a kind of central gear shaft of wind-powered electricity generation gear-box.
Background technique
What use in the wind-powered electricity generation gear-box is planetary gear mechanism, its planetary gears links to each other with wind-powered electricity generation gear-box blade outward, the effect of blade wind-engaging power drives first order planetary pinion and rotates, the first order sun gear that first order planet gear drives is positioned at the center rotates, first order sun gear connects central gear shaft, first order sun wheel shaft passes to the next stage planetary pinion with pneumatic power, further passes to generator, produces electric energy by generator.
Fig. 1 is the planetary gear mechanism figure of existing wind-powered electricity generation gear-box, and it comprises two-stage planet system and ordinary gear train.First order epicyclic train has first central gear shaft 1, first planet carrier 2, first planetary pinion 3 and first gear ring, 4, the first planet carriers 2 to be connected with the blade main shaft and by the blade main shaft drives, drives first central gear shaft 1 and rotate; Second level epicyclic train has secondary sun wheel axle 5, second planet carrier 6, second planetary pinion 7 and second gear ring, 8, the second planet carriers 6 and the 1 coaxial interlock of first central gear shaft, drives secondary sun wheel axle 5 and rotates; Ordinary gear train has gearwheel 10 and high gear 9, and gearwheel 10 and the 5 coaxial interlocks of secondary sun wheel axle drive high gear 9 and rotate, and high speed gear shaft 9 is output shaft, drives generator amature and rotates.
Because first order Gear Planet Transmission is transmitted the wind varying load, its input torque and rotating speed time variation are stronger, it is bigger to fluctuate, therefore need take corresponding measure to improve the Gear Planet Transmission traveling comfort as far as possible, and enumerated 19 kinds in the AGMA 6123-B06 standard that AGMA announces and improved the measure that the planetary pinion transmission is all carried, wherein include and allow one or more member radial floatings, namely produce the scheme of resiliently deformable jointly by gear ring or sun gear or both.
Chinese patent literature CN102518787A discloses a kind of Gear Planet Transmission structure of wind-powered electricity generation gear-box, it comprises sun gear, planet wheel, planet wheel bearing, axle and planetary carrier, axle is installed on the planetary carrier, planet wheel is installed on the axle by planet wheel bearing, described planet wheel bearing is a pair of taper roller bearing and back-to-back installation, interlayer is arranged in the middle of two taper roller bearings, the outer side of a pair of taper roller bearing is near the step of axle, and opposite side is near on the packing ring that is arranged on the planetary carrier.This patent has solved axial wind-force to planetary impact, but when sun gear and planet wheel are the helical teeth engagement, axially wind-force can be delivered to sun gear by planetary pinion, sun gear is impacted with the next stage structure that is connected with sun gear, in addition, this patent can not be handled the vibration problem that radial force causes to planetary gear mechanism.
Summary of the invention
Technical problem to be solved by this invention just provides a kind of planetary gear mechanism that can reduce to the central gear shaft of the wind-powered electricity generation gear-box of the impact of next stage structure and vibration.
Solve the problems of the technologies described above, the present invention is provided with spiral chute by sun gear, back shaft and three sections axle type gears that constitute the band endoporus of one of output shaft at back shaft.
Above-mentioned spiral chute circumferentially greater than a week, can make planetary gear mechanism obtain better all to carry performance along back shaft.Be equivalent between sun gear and output shaft, add the spring of a rigidity appropriateness greater than the spiral chute in a week, thereby can realize the axial float of sun gear, can realize the radial floating of sun gear again.
Principle of the present invention is:
In the wind-powered electricity generation gear-box, be under the input stage condition at planetary carrier, because sun gear and planetary pinion are the helical gear of certain helix angle, so sun gear must be subjected to necessarily the effect of axial force forward or backwards, become axial force when this there is certain percussion in high-speed output end, therefore reduce the sun gear responsive to axial force, be conducive to improve the performance of planetary gear mechanism, guarantee the steady transmission of high-speed output-stage.
When sun gear was subjected to axial force, owing to have around the axial screw groove at back shaft middle part, spiral chute position rigidity was less relatively, so spiral chute has certain compression or tensile buckling, thereby made the back shaft of sun gear axially obtain certain floating.When the planetary pinion transmitted load was in scope of design, because the spiral chute of back shaft has moderate rigidity, only there was micro-deformation in spiral chute, so sun gear and planetary pinion can normally mesh.
When being subjected to big radial impact load, sun gear does the time spent, the rigidity axial owing to the spiral chute ratio of rigidity radially on the back shaft is little, spiral chute has certain bending elasticity distortion, make sun gear obtain certain radial displacement, thereby reduce the influence right to all the other engaging gears of radial impact load, reduced the effect of radial impact, when the radial impact effect disappears, spiral chute with resiliently deformable returns to initial position again, thereby keeps the right normal engagement of each tooth.
Owing to adopted technique scheme, the present invention to have following advantage: reduced impact and the vibration of planetary gear mechanism to the next stage structure, improved the performance of planetary gear mechanism, guaranteed the steady transmission of high-speed output-stage.
Description of drawings
Description of drawings of the present invention is as follows:
Fig. 1 is the planetary gear mechanism schematic representation of existing wind-powered electricity generation gear-box;
Fig. 2 is structural representation of the present invention;
Fig. 3 is the perspective view at A place among Fig. 1;
Fig. 4 is for using planetary gear mechanism schematic representation of the present invention.
Among the figure: 1. first central gear shaft; 2. first planet carrier; 3. first planetary pinion; 4. first gear ring; 5. secondary sun wheel axle; 6. second planet carrier; 7. second planetary pinion; 8. second gear ring; 9. high gear; 10. gearwheel;
11. sun gear; 12. back shaft; 13. output shaft; 14. endoporus; 15. spiral chute; 1 '. central gear shaft of the present invention.
Embodiment
The invention will be further described below in conjunction with drawings and Examples:
As shown in Figures 2 and 3, the present invention is provided with spiral chute 15 by sun gear 11, back shaft 12 and 13 3 sections axle type gears that constitute the band endoporus 14 of one of output shaft at back shaft 12.
As shown in Figure 2, above-mentioned spiral chute 15 along back shaft 12 circumferentially greater than a week.
As shown in Figure 3, spiral chute 15 has groove width and pitch, and when sun gear 11 bore greater impact load, groove width was big, pitch is less.According to actual conditions, spiral chute 15 can be made as two or more.
Compare with the planetary gear mechanism of existing wind-powered electricity generation gear-box, the present invention also has the following advantages:
1, under identical elastic strain condition, reduced the length of central gear shaft, can reduce wind-powered electricity generation gear-box axial dimension;
2, because there is endoporus 14 at the axle center, changing under back shaft 12 internal diameters or the external diameter situation, can change central gear shaft " spring " rigidity;
3, change the groove width of the pitch of spiral chute 15, can make sun gear 11 obtain bigger radial displacement and axial displacement;
4, structure is simple relatively, is easy to manufacturing, and can reduce production costs.
As shown in Figure 4, central gear shaft 1 of the present invention ' as first order central gear shaft, increased the flexibility of first order planetary drivetrain, be conducive to the even distribution of gear teeth load on facewidth direction, reduce wind and become impulsive load to the influence of the planetary gear mechanism of wind-powered electricity generation gear-box, strengthen the planetary gear mechanism load-carrying properties, improved planetary gear mechanism traveling comfort and reliability.
Claims (4)
1. the central gear shaft of a wind-powered electricity generation gear-box is characterized in that: by sun gear (11), back shaft (12) and (13) three sections axle type gears that constitute the band endoporus (14) of one of output shaft, be provided with spiral chute (15) at back shaft (12).
2. the central gear shaft of wind-powered electricity generation gear-box according to claim 1 is characterized in that: described spiral chute (15) along back shaft (12) circumferentially greater than a week.
3. the central gear shaft of wind-powered electricity generation gear-box according to claim 1 and 2 is characterized in that: described spiral chute (15) is the groove on back shaft (12) surface.
4. the central gear shaft of wind-powered electricity generation gear-box according to claim 1 and 2 is characterized in that: described spiral chute (15) break-through endoporus (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102811285A CN103335012A (en) | 2013-07-05 | 2013-07-05 | Sun gear shaft of wind power gear box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102811285A CN103335012A (en) | 2013-07-05 | 2013-07-05 | Sun gear shaft of wind power gear box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103335012A true CN103335012A (en) | 2013-10-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013102811285A Pending CN103335012A (en) | 2013-07-05 | 2013-07-05 | Sun gear shaft of wind power gear box |
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| CN (1) | CN103335012A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111059262A (en) * | 2019-12-23 | 2020-04-24 | 湘潭大学 | Planetary gear transmission variable-rigidity flexible pin shaft load balancing structure |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004314896A (en) * | 2003-04-18 | 2004-11-11 | Honda Motor Co Ltd | Drive shaft support structure of gear case of ship propulsion machine |
| CN101021245A (en) * | 2007-03-21 | 2007-08-22 | 重庆大学 | Coaxle contrarotating high-speed planetary gear transmission |
| CN101561030A (en) * | 2009-05-12 | 2009-10-21 | 重庆大学 | Reaction moment balance transmission system for single rotating motor |
| CN201601370U (en) * | 2010-02-05 | 2010-10-06 | 中国铁道科学研究院机车车辆研究所 | Rapidly assembled and disassembled collecting ring connecting device |
| CN102226727A (en) * | 2011-04-08 | 2011-10-26 | 深圳市琛玛华夏科技有限公司 | Torque sensor for electrical bicycles |
| CN202203380U (en) * | 2011-08-24 | 2012-04-25 | 重庆齿轮箱有限责任公司 | Spline lubrication structure of sun gear of wind power speed-increasing gearbox |
| CN202851614U (en) * | 2012-10-16 | 2013-04-03 | 南车株洲电力机车有限公司 | Driving gear shaft of gear box |
| CN202937782U (en) * | 2012-11-09 | 2013-05-15 | 江苏新瑞戴维布朗齿轮系统有限公司 | Uniform load structure of planet gear |
-
2013
- 2013-07-05 CN CN2013102811285A patent/CN103335012A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004314896A (en) * | 2003-04-18 | 2004-11-11 | Honda Motor Co Ltd | Drive shaft support structure of gear case of ship propulsion machine |
| CN101021245A (en) * | 2007-03-21 | 2007-08-22 | 重庆大学 | Coaxle contrarotating high-speed planetary gear transmission |
| CN101561030A (en) * | 2009-05-12 | 2009-10-21 | 重庆大学 | Reaction moment balance transmission system for single rotating motor |
| CN201601370U (en) * | 2010-02-05 | 2010-10-06 | 中国铁道科学研究院机车车辆研究所 | Rapidly assembled and disassembled collecting ring connecting device |
| CN102226727A (en) * | 2011-04-08 | 2011-10-26 | 深圳市琛玛华夏科技有限公司 | Torque sensor for electrical bicycles |
| CN202203380U (en) * | 2011-08-24 | 2012-04-25 | 重庆齿轮箱有限责任公司 | Spline lubrication structure of sun gear of wind power speed-increasing gearbox |
| CN202851614U (en) * | 2012-10-16 | 2013-04-03 | 南车株洲电力机车有限公司 | Driving gear shaft of gear box |
| CN202937782U (en) * | 2012-11-09 | 2013-05-15 | 江苏新瑞戴维布朗齿轮系统有限公司 | Uniform load structure of planet gear |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111059262A (en) * | 2019-12-23 | 2020-04-24 | 湘潭大学 | Planetary gear transmission variable-rigidity flexible pin shaft load balancing structure |
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| C06 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent of invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhu Caichao Inventor after: Di Hongfei Inventor after: Gu Zonglin Inventor before: Zhu Caichao Inventor before: Di Hongfei Inventor before: Gu Zonglin |
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| C12 | Rejection of a patent application after its publication | ||
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Application publication date: 20131002 |