CN103032278A - Wind-electricity constant braking cycloid pitch-variable gearbox - Google Patents
Wind-electricity constant braking cycloid pitch-variable gearbox Download PDFInfo
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- CN103032278A CN103032278A CN201110314724XA CN201110314724A CN103032278A CN 103032278 A CN103032278 A CN 103032278A CN 201110314724X A CN201110314724X A CN 201110314724XA CN 201110314724 A CN201110314724 A CN 201110314724A CN 103032278 A CN103032278 A CN 103032278A
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 20
- 239000010959 steel Substances 0.000 claims abstract description 20
- 230000007246 mechanism Effects 0.000 claims abstract description 12
- 230000005611 electricity Effects 0.000 claims description 9
- 229910001018 Cast iron Inorganic materials 0.000 claims description 8
- 239000011521 glass Substances 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000003638 chemical reducing agent Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 4
- 238000003754 machining Methods 0.000 description 3
- 229910001141 Ductile iron Inorganic materials 0.000 description 2
- 229910001060 Gray iron Inorganic materials 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000005304 joining Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 210000000481 breast Anatomy 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
The invention relates to the technical field of wind-electricity pitch-variable speed reduction. A wind-electricity constant braking cycloid pitch-variable gearbox comprises three parts, namely, a planet, a cycloid and a brake, and is characterized in that the cycloid is a rim and spoke assembling component; the middle gear thickness is two times of the thickness on two sides; a phase difference is 180 degrees; an eccentric bearing comprises a conical bearing and an eccentric sleeve; the brake comprises two sets of V-shaped slot plate mechanisms, a friction pair and a resetting spring; a conical plate in the friction pair is linked with a middle plate; a first driving V-shaped slot plate is linked on a rotor shaft; a steel ball is arranged between the first driving V-shaped slot plate and a driven V-shaped slot plate on one side of the middle plate; a second driven V-shaped slot plate is linked with an output shaft spline; a steel ball is also arranged between the second driven V-shaped slot plate and the driving V-shaped slot plate on the other side of the middle plate; and the friction pair is tightly pressed by the resetting spring. The wind-electricity constant braking cycloid pitch-variable gearbox has the beneficial effects: a brake torque is automatically increased following the increasing of a resisting moment; a single-stage speed reduction ratio is 143; the weight is light; the axial size is short; the cycloid gear teeth do not break; the transmission loading force is greater than that of an NGW with three planet gears; and the manufacturing cost is 45-55% lower.
Description
[technical field] the present invention relates to wind electricity change paddle braking technique field, is that invention is improved in " three-disk cycloid single pitch-controlled speed reducer of wind turbine " (201010174471.6), the permanent baking cycloid variable propeller gearbox of a kind of wind-powered electricity generation.
The essential high overload power of the variable propeller gearbox in [background technique] 70 meters high-altitudes, high reliability and braking are very reliable." wind-power electricity generation and wind turbine gearbox general introduction " pointed out: " the wind field gear-box spoilage that has is up to 40-50%, and this is that fretting wear causes the early stage spot corrosion of gear to surpass expected design because carry and change under the impact condition frequently being subject to wind." background technique is mainly the third-level planetary structure:
1. Nanjing high gear company " variable propeller gearbox of wind power generator " (ZL200410064931);
2. Chongqing gear-box company " wind power generation variable oar reduction gear box " (200720188097);
3. the Tianjin speed reducer company change oar gear reduction unit of wind-power electricity generation " be used for " (200720125070);
4. wind-powered electricity generation company " wind power generation variable oar reduction gear box " (200920116858) advances in Hangzhou;
5. group of ACE Semi " wind-power generating variable-propeller speed reducer " (200910034380).Existing problems:
(1) existing gear-box safety coefficient is lower, such as BJJSQ1500A type third level planet wheel: S
H=1.21, SF=1.37, thereby cause early stage spot corrosion when bearing fatigue load.In addition gear hobbing, heat treatment and roll flute stress concentration point tooth root place are prone to microcrack, thereby do not have a high reliability; (2) three planet wheels, overload capacity is not high; (3) axial dimension length, complex structure, price height;
(4) need the distribution magnetic brake, the braking reliability is an extremely important index of variable propeller gearbox, and electromagnetic type braking reliability is relatively poor, and particularly braking moment can not increase automatically with the increase of resisting moment;
Also have in addition " three-disk cycloid single pitch-controlled speed reducer of wind turbine " (201010174471.6), its major defect is:
120 ° of (1) three cycloid wheel phase differences can't be realized dynamic balancing and can not be used for input speed and be higher than the 1700rpm variable paddle speed reducer;
(2) cylindrical roller capacity eccentric bearing radial clearance is large, produces during the cycloid wheel translation that click is rattled away, click is rattled away microvibration, thereby is not suitable for input and is higher than the 1700rpm occasion and is not suitable for variable paddle speed reducer;
(3) pinhole grinder static balancing adjustment is pretty troublesome, and the pin-and-hole grinding accuracy concerns stable drive, noise and working life;
(4) need the distribution magnetic brake, the braking reliability is an extremely important index of variable propeller gearbox, and electromagnetic type braking reliability is relatively poor, and particularly braking moment can not increase automatically with the increase of resisting moment;
[summary of the invention] the present invention is that " three-disk cycloid single pitch-controlled speed reducer of wind turbine " improves, having migrated wherein, band all carries ring W output mechanism and partly buries toothing, adopted two groups of steel ball V-type slot devices, purpose provides the permanent baking cycloid variable propeller gearbox of wind-powered electricity generation that a kind of high reliability, overload power are large, braking moment increases with resisting moment and automatically increase.Technical solution of the present invention is as follows:
(A) in the three-disk cycloid wheel, breast wheel thickness is both sides uniform thickness wheel twices, and 180 ° of the two phase shiftings can be realized dynamic balancing;
(B) adopt back-to-back tapered roller capacity eccentric bearing, radial clearance is transferred to and is bordering on zero, produces vibration when having eliminated the cycloid wheel translation; Prototyping testing confirms, adopted technological scheme (A) with (B) after, normal operation during input 3000rpm.
(C) adopt behind the cycloid wheel rim roll flute and cast iron spoke workpiece package assembly, wherein the uniform pin-and-hole of cast iron spoke can adopt right boring and obtain enough highi degree of accuracy in vertical machining centre, and work efficiency is high.The sliding wear-resisting ring of joining improves working life in the pin-and-hole.Tradition cycloid wheel uniform pin-and-hole must grinding on the pin-and-hole special purpose grinder, because this moment, cycloid wheel was in the large eccentricity position, must adjust to very high static balancing and could obtain designing requirement and pin-and-hole is little, work efficiency is extremely low, and needs the pin-and-hole special purpose grinder of configuration all size;
(D) the present invention has adopted the structure innovation of two groups of steel ball V-type slot devices, friction pair and spring assemblies, wherein: two groups of steel ball V-type slot devices are according to steel ball V-type groove automatic pressurizing device in the mechanical stepless transmission improved (seeing 90 pages of Ruan Zhongtang " mechanical stepless transmission "): first group is comprised of active V-type slotted disk, the driven V-type slotted disk of telophragma one side and the steel balls that occupy in the middle of the two dish V-type groove faces, and wherein telophragma connects with the cone dish; Second group by the telophragma opposite side initiatively V-type slotted disk, the second driven V-type slotted disk and the steel balls that occupy in the middle of the two dish V-type groove faces form, steel ball is distributed on the retainer.Working principle: during energising, first group of active V-type groove face produces positive pressure to steel ball, and its axial thrust load promotes the driven V-type slotted disk of telophragma separates friction pair, and braking moment disappears, and its circumferential component drives the output shaft work done that connects with second group of driven V-type slotted disk; During outage, the input shaft stop, resisting moment makes the second driven V-type groove face produce positive pressure to steel ball, and its axial thrust load compresses friction pair, and braking moment will muchly have much.
[beneficial effect] according to patent of invention " variable propeller gearbox of wind power generator " (ZL200410064931.4) its creativeness be embodied in:
(1) braking is reliable: braking moment increases and automatically increases with resisting moment;
(2) cycloidal gear teeth and half imbedding needle pin can not break, thereby have three planet wheel NGW Transmission bearing large than only;
(3) when running three wheels inertial force and moment of inertia complete equilibrium in theory;
(4) single-stage speed reducing compares up to 143, and lightweight, axial dimension is lacked and low cost of manufacture 45-55%.
Each wind field variable propeller gearbox is worth (99 * 40,000/platform) 3,960,000 yuan, thereby can save 2,000,000 yuan, is enough to pay wind field 4-5 name employee wage with this interest of 2,000,000.Announce according to Wind Energy In China association, newly-increased installed capacity of wind-driven power was 189GW in 2010, and (33 * 1.5MW) wind fields, variable propeller gearbox is worth 15 hundred million, thereby can save 7.5 hundred million, is equivalent to China's three large wind power gear corporate profit summations to be equivalent to 380.
[description of drawings] Fig. 1. embodiment of the invention structural representation
Fig. 2. with 3. be respectively steel ball and V-type groove face at outage (braking) Force principle figure when switching on (work done)
[embodiment] encyclopaedizes the present invention below in conjunction with accompanying drawing:
With reference to Fig. 1. the permanent baking cycloid variable propeller gearbox of a kind of wind-powered electricity generation, comprise cycloid driving component and brake component, described cycloid driving component comprises support (1), the second input shaft (4), the cycloid wheel assembly, capacity eccentric bearing, pin wheel housing (22), needle pin (27), middle support (19) and pin axle type output mechanism, described pin axle type output mechanism comprises output shaft (3), pin (16), column sleeve (8,13) and all carry ring (11,17), described output shaft (3) is bearing in support (1) endoporus with bearing (2), described support (1), pin wheel housing (22) and middle support (19) are integrally togather in turn, described the second input shaft (4) both sides bearing (23,24) be bearing in respectively output shaft (3) and middle support (19) endoporus, described first all carries ring (11) places between the cycloid wheel, second all carries ring (17) is contained in pin (16) end and being bearing on middle support (19) the medial flange cylindrical with bearing (18), pin is freely supported structure, improved the crooking ability of pin, it is characterized in that:
(I) described cycloid assembly is cycloid wheel rim (10,21) connect respectively cast iron spoke (7 with junction of the edges of two sheets of paper pin, 20) builtup member, the uniform pin-and-hole of cast iron spoke can adopt the more traditional pin-and-hole of right boring grinding accuracy on special purpose grinder high in vertical machining centre, work efficiency is higher, cycloid wheel rim (21) thickness is both sides uniform thickness cycloid wheel rims (10) twices in the middle of described, middle cycloid wheel rim (21) and 180 ° of both sides cycloid wheel rims (10) phase differences, dynamic balancing can be realized thereby input speed can be upward improved largely, described cast iron spoke (7,20) the sliding wear-resisting ring (9 of joining respectively in the upper uniform pin-and-hole, 14), as: the cooperation part high hardness column sleeve in the cycloid, sintered metal powder bearing etc., the calculated results shows, because the equivalent radius of wear-resisting ring and pin-and-hole is very little, and make wear-resisting ring and pin-and-hole between contact stress only for allowable contact stress 1/20th, so the low hardness pin-and-hole can not wear and tear too early, described cast iron spoke material is spheroidal graphite cast iron or high-strength gray cast iron, and this is because spheroidal graphite cast iron or grey cast iron have good process for machining performance, absorbing, low noise and good casting property;
(II) described being contained in the upper capacity eccentric bearing of the second input shaft (4), tapered roller bearing (6,15) endoporus is close-fitting eccentric bushing (5,12) respectively, described tapered roller bearing is two back-to-back bearing pack, during assembling radial clearance is controlled to be bordering on zero;
(III) described needle pin (27) partly is embedded in the pin wheel housing (22), is called partly to bury toothing (see Zhu Xiaolu " 828 pages of Gear Transmission Design handbook), makes needle pin can bear very high bending force;
(IV) in the described brake component, the first input shaft (29) is bearing in front support (28) endoporus with bearing, front support (28) connects with middle support (19), the two group of its endoluminal means V-type slotted disk mechanism, friction pair and Returnning spring (26), wherein:
(IV-1) described friction pair comprises internal cones (32) and cone dish (31), and wherein internal cones (32) is connected in front support (28) endoporus, and cone dish (31) connects with two telophragmas (33) of organizing V-type slotted disk mechanism;
(IV-2) described two the group in the V-type slotted disk mechanism, first group of active V-type slotted disk (30) is connected on the first input shaft (29), telophragma (33) one sides are the first driven V-type slotted disk, place steel ball (34) is arranged between the two V-type grooves, second group driven V-type slotted disk (35) is slidingly connected with the external splines shaft extension end (4-1) of the second input shaft (4), telophragma (33) opposite side is initiatively V-type slotted disk of second (group), placing has steel ball (34) between the two V-type grooves, the steel ball number that is distributed on the retainer equates with V-type groove number;
(IV-3) described Returnning spring (26) one ends are close to a glass interior end of type spring seat (25), the other end is close to the driven V-type slotted disk of second (group) (35) end face, Returnning spring (26) compresses cone dish (31) and internal cones (32) friction pair, described cup type spring seat (25) exterior edge face is close on the second input shaft (4) shaft shoulder, and described cup type spring seat (25) opening end and the driven V-type slotted disk of second (group) (35) gap are x.
Working principle: during energising, first group of active V-type groove face produces positive pressure to steel ball, and its axial thrust load promotes the driven V-type slotted disk of telophragma separates friction pair, and braking moment disappears, and its circumferential component drives the output shaft work done that connects with second group of driven V-type slotted disk; During outage, the input shaft stop, resisting moment makes the second driven V-type groove face produce positive pressure to steel ball, and its axial thrust load compresses friction pair, and braking moment will muchly have much, arrives greatly till the friction pair conquassation, guarantees to be in highly reliable braking state always.
Claims (1)
1. the permanent baking cycloid variable propeller gearbox of a wind-powered electricity generation, comprise cycloid driving component and brake component, described cycloid driving component comprises support (1), the second input shaft (4), the cycloid wheel assembly, capacity eccentric bearing, pin wheel housing (22), needle pin (27), middle support (19) and pin axle type output mechanism, described pin axle type output mechanism comprises output shaft (3), pin (16), column sleeve (8,13) and all carry ring (11,17), described output shaft (3) is bearing in support (1) endoporus with bearing (2), described support (1), pin wheel housing (22) and middle support (19) are integrally togather in turn, described the second input shaft (4) both sides bearing (23,24) be bearing in respectively output shaft (3) and middle support (19) endoporus, described first all carries ring (11) places between the cycloid wheel, second all carries ring (17) is contained in pin (16) end and being bearing on middle support (19) the medial flange cylindrical with bearing (18), pin is freely supported structure, it is characterized in that:
(I) described cycloid assembly is cycloid wheel rim (10,21) connects respectively cast iron spoke (7,20) with junction of the edges of two sheets of paper pin builtup member, cycloid wheel rim (21) thickness is both sides uniform thickness cycloid wheel rims (10) twices in the middle of described, middle cycloid wheel rim (21) and 180 ° of both sides cycloid wheel rims (10) phase differences are slided respectively in the upper uniform pin-and-hole of described cast iron spoke (7,20) and are joined wear-resisting ring (9,14);
(II) described being contained in the upper capacity eccentric bearing of the second input shaft (4), tapered roller bearing (6,15) endoporus is close-fitting eccentric bushing (5,12) respectively, and described tapered roller bearing is two back-to-back bearing pack;
(III) described needle pin (27) partly is embedded in the pin wheel housing (22);
(IV) in the described brake component, the first input shaft (29) is bearing in front support (28) endoporus with bearing, front support (28) connects with middle support (19), the two group of its endoluminal means V-type slotted disk mechanism, friction pair and Returnning spring (26), wherein:
(IV-1) described friction pair comprises internal cones (32) and cone dish (31), and wherein internal cones (32) is connected in front support (28) endoporus, and cone dish (31) connects with two telophragmas (33) of organizing V-type slotted disk mechanism;
(IV-2) described two the group in the V-type slotted disk mechanism, first group of active V-type slotted disk (30) is connected on the first input shaft (29), telophragma (33) one sides are the first driven V-type slotted disk, place steel ball (34) is arranged between the two V-type grooves, second group driven V-type slotted disk (35) is slidingly connected with the external splines shaft extension end (4-1) of the second input shaft (4), telophragma (33) opposite side is initiatively V-type slotted disk of second (group), placing has steel ball (34) between the two V-type grooves, the steel ball number that is distributed on the retainer equates with V-type groove number;
(IV-3) described Returnning spring (26) one ends are close to a glass interior end of type spring seat (25), the other end is close to the driven V-type slotted disk of second (group) (35) end face, Returnning spring (26) compresses cone dish (31) and internal cones (32) friction pair, described cup type spring seat (25) exterior edge face is close on the second input shaft (4) shaft shoulder, and described cup type spring seat (25) opening end and the driven V-type slotted disk of second (group) (35) gap are x.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110314724.XA CN103032278B (en) | 2011-10-01 | 2011-10-01 | Wind-electricity constant braking cycloid pitch-variable gearbox |
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| CN201110314724.XA CN103032278B (en) | 2011-10-01 | 2011-10-01 | Wind-electricity constant braking cycloid pitch-variable gearbox |
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| CN103032278A true CN103032278A (en) | 2013-04-10 |
| CN103032278B CN103032278B (en) | 2015-01-07 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2535608Y (en) * | 2001-12-26 | 2003-02-12 | 王庆雨 | Cycloid speed reducer |
| CN1510819A (en) * | 2002-12-26 | 2004-07-07 | 吴声震 | Brake motor |
| CN101806335A (en) * | 2010-04-17 | 2010-08-18 | 吴声震 | Three-chip type single-stage cycloidal speed reducer for industrial robot |
| CN101806336A (en) * | 2010-05-01 | 2010-08-18 | 吴声震 | Wind power generation three-piece cycloidal variable propeller reducer |
| CN101813165A (en) * | 2010-05-01 | 2010-08-25 | 吴声震 | Wind power generation three-piece double-cycloid yawing speed reducer |
| CN101825059A (en) * | 2010-05-01 | 2010-09-08 | 吴声震 | Three-disk cycloid single pitch-controlled speed reducer of wind turbine |
| CN101832238A (en) * | 2010-05-01 | 2010-09-15 | 吴声震 | Wind power generating three-sheet double cycloid single-stage pitch reducer |
-
2011
- 2011-10-01 CN CN201110314724.XA patent/CN103032278B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2535608Y (en) * | 2001-12-26 | 2003-02-12 | 王庆雨 | Cycloid speed reducer |
| CN1510819A (en) * | 2002-12-26 | 2004-07-07 | 吴声震 | Brake motor |
| CN101806335A (en) * | 2010-04-17 | 2010-08-18 | 吴声震 | Three-chip type single-stage cycloidal speed reducer for industrial robot |
| CN101806336A (en) * | 2010-05-01 | 2010-08-18 | 吴声震 | Wind power generation three-piece cycloidal variable propeller reducer |
| CN101813165A (en) * | 2010-05-01 | 2010-08-25 | 吴声震 | Wind power generation three-piece double-cycloid yawing speed reducer |
| CN101825059A (en) * | 2010-05-01 | 2010-09-08 | 吴声震 | Three-disk cycloid single pitch-controlled speed reducer of wind turbine |
| CN101832238A (en) * | 2010-05-01 | 2010-09-15 | 吴声震 | Wind power generating three-sheet double cycloid single-stage pitch reducer |
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| CN103032278B (en) | 2015-01-07 |
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