CN104481821A - Wind turbine generator and transmission structure thereof - Google Patents
Wind turbine generator and transmission structure thereof Download PDFInfo
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- CN104481821A CN104481821A CN201410524946.8A CN201410524946A CN104481821A CN 104481821 A CN104481821 A CN 104481821A CN 201410524946 A CN201410524946 A CN 201410524946A CN 104481821 A CN104481821 A CN 104481821A
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- gear box
- central shaft
- main
- wheel hub
- wind turbines
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- Y02E10/722—
Abstract
The invention discloses a transmission structure, in particular to the transmission structure for a wind turbine generator and belongs to the technical field of wind power generation. The transmission structure for the wind turbine generator comprises a central shaft, a hub and a main gear box; the hub is arranged on the central shaft in a rotary mode; the main gear box is arranged at one end of the central shaft; the side of the hub, on which the main gear box is arranged, is in matching connection with an input end of the main gear box. According to the transmission structure for the wind turbine generator, a spindle-free transmission structure design which is different from that the existing wind turbine generator is adopted, so that the length of the transmission device is further shortened, achievement of minimization of the size of an engine room is facilitated, the weight of the integral transmission device can be reduced, the unit weight is particularly avoided from increasing during the design of a large-sized unit, a bearing which supports the hub is good in bearing condition, and reduction of the difficulties for designing the bearing is facilitated.
Description
Technical field
The present invention relates to a kind of drive mechanism, especially a kind of drive mechanism of Wind turbines, belongs to technical field of wind power generating equipment.
Background technique
Traditional double-fed fan drive layout is generally: main shaft one end is connected with main-gear box by flange or locking plate, the main shaft the other end is connected with front end wheel hub, and the output shaft of main-gear box is connected with generator by coupling, and support whole transmission device by main shaft bearing.
Transmission device is as the important composition parts of wind power generating set, and be mainly used in transmitting the moment of torsion from wind wheel, drive electrical generators operates, and main shaft bearing support bearing is from the various load of wheel hub with each large parts simultaneously.Traditional transmission device can be divided into two kinds according to supporting way: (2) single-point support, namely on Transmitted chains, a face-to-face or back-to-back biserial circular cone main shaft bearing is arranged, this kind of layout can shorten Transmitted chains length, and improve gear-box stressing conditions, but major diameter biserial conical bearing is expensive and manufacture is difficult, cause unit design type selecting difficulty and cost increase; (2) two supports, namely on Transmitted chains, arrange two main shaft bearings, main-gear box now only bears torsional interaction, and gear-box is stressed relatively better, but Transmitted chains is relatively long; (3) supported at three point, namely on Transmitted chains, arrange 1 main shaft bearing, this kind of cost of layout is relatively low, but main-gear box fore bearing bears moment of torsion and radial load, and gearbox fault rate is relatively high.
Therefore, when the wind power generating set of designing high-power, if still adopt traditional transmission arrangements form, following problem can be brought: the length of (1) transmission device can be longer, namely the volume in cabin can be comparatively large, and this brings challenge to a certain degree to the design of nacelle cover; (2) because transmission device has the existence of main shaft, make the weight of whole transmission device larger; (3) because main shaft bearing is arranged between wheel hub and gear-box, add that each parts increase weightening finish, main shaft bearing can be made to carry comparatively large, therefore the main shaft bearing selected also can correspondingly increase.
Summary of the invention
Goal of the invention of the present invention is: for above-mentioned Problems existing, a kind of novel wind power generating set drive mechanism is provided, to substitute traditional scheme being connected main-gear box by main shaft, reach drive mechanism miniaturization, lightweight, and the good object of bearing capacity.
The technical solution used in the present invention is as follows:
A drive mechanism for Wind turbines, comprises central shaft, wheel hub and main-gear box, and described wheel hub is rotatable to be arranged on central shaft, and described main-gear box is positioned at one end of central shaft, and the input end of the side, main-gear box place of wheel hub and main-gear box is connected.The drive mechanism of Wind turbines of the present invention, be with the main difference of existing Wind turbines drive mechanism: adopt central shaft to fix and design, wheel hub is rotatable to be arranged on central shaft, wheel hub is directly connected with the input end of main-gear box and drives, and the joint of transmission and main-gear box are at the homonymy of wheel hub.Compared to traditional wind turbine transmission chain structure, the present invention is owing to eliminating main shaft, and the length of transmission device shortens further, can realize the miniaturization of the volume in cabin, the weight of whole transmission device can be reduced simultaneously, particularly avoid the increase of unit weight when Large-scale machine set designs.
Described central shaft is hollow structure, and the output shaft of described main-gear box is arranged in central shaft, or further passes axially through central shaft, makes transmission device energy reduced volume further, is conducive to reducing further of cabin overall volume.
Described output shaft end is connected with generator, and described main-gear box and generator are respectively in the two ends of central shaft.The two ends that main-gear box and generator are respectively in central shaft are conducive to the balance of whole nacelle weight, ensure the stability that system is installed to be connected between output shaft with generator by coupling.
Described wheel hub is fixedly connected with the input end of main-gear box.The fit system of wheel hub and main-gear box input end can adopt all conventionally forms, and in order to improve the stability of system, wheel hub adopts flange plate or locking plate to be fixed with the input end of main-gear box to be connected.Described main-gear box can adopt conventional or differential multistage epicyclic wheel structural design, and wheel hub is fixedly connected with the ring gear of main-gear box train, and the planet carrier of main-gear box train is fixedly connected with jack shaft.
Described main-gear box is fixedly installed on central shaft end, connects preferably by bolt.
Described central shaft is fixedly installed in blower fan frame, connects preferably by bolt.
By being fixedly connected with of main-gear box and central shaft, central shaft is fixedly connected with blower fan frame, forms the entirety that one has secure support structure, thus makes central shaft also become a part for cabin support body.
Described wheel hub is sheathed on central shaft by bearing is rotatable.
Described wheel hub is sheathed on central shaft by two bearings are rotatable, two bearings lays respectively at the two ends of wheel hub, described wheel hub center of gravity is made to be positioned at the middle part of central shaft two spring bearings, be conducive to improving shaft strength, reduce bearing requirements, be beneficial to loss of weight design and the bearing type selecting of Large-scale machine set especially.
A kind of Wind turbines adopting described Wind turbines drive mechanism.
In sum, owing to have employed technique scheme, the invention has the beneficial effects as follows: the drive mechanism of Wind turbines of the present invention, adopt and be different from designing without main shaft driving structure of existing Wind turbines, the length of transmission device is shortened further, be conducive to the miniaturization realizing cabin volumes, the weight of whole transmission device can be reduced simultaneously, the increase of unit weight is particularly avoided when Large-scale machine set designs, the shaft strength situation of supporting wheel hub is better, is conducive to reducing design bearing difficulty.
Accompanying drawing explanation
Examples of the present invention will be described by way of reference to the accompanying drawings, wherein:
Fig. 1 is cross-sectional view of the present invention.
Mark in figure: 1-central shaft, 2-wheel hub, 3-main-gear box, 4-output shaft, 5-generator, 6-blower fan frame, 7-bearing.
Embodiment
All features disclosed in this specification, or the step in disclosed all methods or process, except mutually exclusive feature and/or step, all can combine by any way.
Arbitrary feature disclosed in this specification, unless specifically stated otherwise, all can be replaced by other equivalences or the alternative features with similar object.That is, unless specifically stated otherwise, each feature is an example in a series of equivalence or similar characteristics.
Embodiment
The drive mechanism of Wind turbines of the present invention, its structure as shown in Figure 1, comprise central shaft 1, wheel hub 2 and main-gear box 3, described central shaft 1 is fixedly installed in blower fan frame 6, described wheel hub 2 is arranged on central shaft 1 by two bearings 7 are rotatable, described main-gear box 3 is positioned at one end of central shaft 1, and main-gear box 3 is secured by bolts in central shaft 1 end, and the input end of the side, main-gear box 3 place of wheel hub 2 and main-gear box 3 is connected; Described central shaft 1 is the tubular structure of hollow, the output shaft 4 of main-gear box 3 to be arranged in central shaft 1 and centrally axle 1 axial arranged, the end of output shaft 4 is connected with generator 5 by coupling, makes described main-gear box 3 and generator 5 be respectively in the two ends of central shaft 1.
Described wheel hub 2 is fixedly connected with the input end of main-gear box 3, wheel hub 2 adopts flange plate to be fixed with the input end of main-gear box 3 to be connected, in the present embodiment, main-gear box 3 adopts differential epicyclic wheel structural design, wheel hub 2 is connected by flange and bolt with the ring gear of main-gear box 3, and the planet carrier of main-gear box 3 is fixedly connected with central shaft 1.The specific design of main-gear box 3 can according to the specification of unit for foundation be carried out.
A kind of Wind turbines, comprises the drive mechanism of described Wind turbines, also comprises described yaw system, the system of other necessity such as pitch-controlled system and control system, forms complete Wind turbines overall.
The drive mechanism of Wind turbines of the present invention, adopt the design of the main shaft drive being different from existing Wind turbines, creationary employing wheel hub rotate and with the structural design of the direct connection for transmission of main-gear box, the length of transmission device is shortened further, this structure is conducive to the miniaturization realizing cabin volumes, cancellation due to main shaft can also reduce the weight of whole transmission device simultaneously, the increase of unit weight is particularly avoided when Large-scale machine set designs, in addition because bearing is directly arranged in wheel hub, improve the stressed of bearing, make also to have the little and advantage that bearing load carrying capacity is good of bearing.
The present invention is not limited to aforesaid embodiment.The present invention expands to any new feature of disclosing in this manual or any combination newly, and the step of the arbitrary new method disclosed or process or any combination newly.
Claims (10)
1. the drive mechanism of a Wind turbines, it is characterized in that: comprise central shaft (1), wheel hub (2) and main-gear box (3), described wheel hub (2) is rotatable to be arranged on central shaft (1), described main-gear box (3) is positioned at one end of central shaft (1), and the input end of main-gear box (3) side, place of wheel hub (2) and main-gear box (3) is connected.
2. the drive mechanism of Wind turbines as claimed in claim 1, it is characterized in that: described central shaft (1) is hollow structure, the output shaft (4) of described main-gear box (3) is arranged in central shaft (1).
3. the drive mechanism of Wind turbines as claimed in claim 2, is characterized in that: described output shaft (4) end is connected with generator (5).
4. the drive mechanism of Wind turbines as claimed in claim 3, is characterized in that: described main-gear box (3) and generator (5) are respectively in the two ends of central shaft (1).
5. the drive mechanism of Wind turbines as claimed in claim 1, is characterized in that: described wheel hub (2) is fixedly connected with the input end of main-gear box (3).
6. the drive mechanism of Wind turbines as claimed in claim 1, is characterized in that: described main-gear box (3) is fixedly installed on central shaft (1) end.
7. the drive mechanism of the Wind turbines as described in any one of claim 1 to 6, is characterized in that: described central shaft (1) is fixedly installed in blower fan frame (6).
8. the drive mechanism of Wind turbines as claimed in claim 1, is characterized in that: described wheel hub (2) is sheathed on central shaft (1) by bearing (7) is rotatable.
9. the drive mechanism of Wind turbines as claimed in claim 8, is characterized in that: described wheel hub (2) is sheathed on central shaft (1) by two bearings (7) are rotatable, and two bearings (7) lays respectively at the two ends of wheel hub (2).
10. a Wind turbines, is characterized in that: the drive mechanism adopting the Wind turbines as described in any one of claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410524946.8A CN104481821A (en) | 2014-10-09 | 2014-10-09 | Wind turbine generator and transmission structure thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410524946.8A CN104481821A (en) | 2014-10-09 | 2014-10-09 | Wind turbine generator and transmission structure thereof |
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| Publication Number | Publication Date |
|---|---|
| CN104481821A true CN104481821A (en) | 2015-04-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410524946.8A Pending CN104481821A (en) | 2014-10-09 | 2014-10-09 | Wind turbine generator and transmission structure thereof |
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| CN (1) | CN104481821A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6459165B1 (en) * | 1999-04-12 | 2002-10-01 | Winergy Ag | Drive for a windmill |
| DE102007047317A1 (en) * | 2007-10-02 | 2009-04-09 | Innovative Windpower Ag | Decoupling of the drive shaft from the output shaft by a two-stage gearbox in a wind turbine |
| CN102628428A (en) * | 2012-04-25 | 2012-08-08 | 东方电气集团东方汽轮机有限公司 | High power wind generating set |
| CN103210215A (en) * | 2010-10-18 | 2013-07-17 | 维斯塔斯风力系统有限公司 | Wind turbine power transmission system |
-
2014
- 2014-10-09 CN CN201410524946.8A patent/CN104481821A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6459165B1 (en) * | 1999-04-12 | 2002-10-01 | Winergy Ag | Drive for a windmill |
| DE102007047317A1 (en) * | 2007-10-02 | 2009-04-09 | Innovative Windpower Ag | Decoupling of the drive shaft from the output shaft by a two-stage gearbox in a wind turbine |
| CN103210215A (en) * | 2010-10-18 | 2013-07-17 | 维斯塔斯风力系统有限公司 | Wind turbine power transmission system |
| CN102628428A (en) * | 2012-04-25 | 2012-08-08 | 东方电气集团东方汽轮机有限公司 | High power wind generating set |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20160419 Address after: 618000 Sichuan Province, Deyang city Huashan road two No. 2 Applicant after: DONGFANG ELECTRIC WIND POWER CO., LTD. Address before: 618000 Jiangxi hi tech Industrial Park, Sichuan, Jinsha Road, No. 666, No. Applicant before: Dongfang Turbine Co., Ltd., Dongfang Electric Group |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150401 |
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| WD01 | Invention patent application deemed withdrawn after publication |