CN209621526U - A kind of wind-driven generator and its transmission system - Google Patents

Abstract

The utility model discloses a kind of wind-driven generator and its transmission systems, including the drive bearing to be connected with wheel hub and rotate synchronously with wheel hub；It is connected with the drive bearing, the driving section to be rotated synchronously with the drive bearing；It is connected with the driving section, to output torque to generator and the gear-box that generates electricity under rated speed for generator.Above-mentioned transmission system no setting is required main shaft, reduces the weight of transmission system, solves the problems, such as that assembly efficiency is low.In addition, the invention also discloses a kind of wind-driven generators including above-mentioned transmission system.

Description

A kind of wind-driven generator and its transmission system

Technical field

The utility model relates to technical field of wind power generation, more particularly to a kind of transmission system.In addition, the utility model Further relate to a kind of wind-driven generator including above-mentioned transmission system.

Background technique

Wind-driven generator is a kind of equipment that can convert wind energy into electric energy, and wind-driven generator mainly includes rotor leaf Piece, wheel hub, axis system and generator, wherein axis system is used to make wheel hub generate under the action of the wind rotor blade Torque transfer generate electricity to generator namely axis system effect is by wheel hub from rotor blade power obtained transmitting To generator.

Currently, a kind of axis system includes main shaft, base bearing and gear-box, the both ends of main shaft are separately connected wheel hub and tooth The input shaft of roller box, base bearing are set in main shaft for main axis.When assembling axis system, in order to realize base bearing and master The connection relationship being interference fitted between axis needs the hot charging process heated to the inner ring of base bearing, complete this two It needs to cool down base bearing after the assembly of person, the process of above-mentioned heating, assembly and cooling base bearing will expend a large amount of dress With working hour, the assembly efficiency of axis system is significantly reduced.

Utility model content

The purpose of the utility model is to provide a kind of transmission system, the transmission system no setting is required main shaft reduces transmission The weight of system solves the problems, such as that assembly efficiency is low.It includes above-mentioned transmission that the another object of the utility model, which is to provide a kind of, The wind-driven generator of system.

To achieve the above object, the utility model provides a kind of transmission system, comprising: to be connected with wheel hub and with wheel hub The drive bearing of synchronous rotation；It is connected with the drive bearing, the driving section to be rotated synchronously with the drive bearing；With institute Driving section is stated to be connected, to output torque to generator and the gear-box that generates electricity under rated speed for generator.

Preferably, the mainframe of engine room cover, wheel hub and the drive bearing inner ring are fixed in the outer ring of the drive bearing Weather side be connected, the driving section is connected with the downwind side of the drive bearing inner ring.

Preferably, the driving section is specially connecting flange in disk form；Wherein, the connecting flange have to The connected bearing connecting pin of the drive bearing and the transmission connection end to be connected with the gear-box, and the transmission connection End and the bearing connecting pin are sequentially distributed along the radial direction of the connecting flange.

Preferably, the input shaft of the gear-box is connected with the downwind side at connecting flange transmission connection end.

Preferably, the center of the connecting flange offers circular through hole.

It preferably, further include with the locking device for remaining stationary state for the connecting flange；Wherein, the locking dress Set include: with lockhole and with the downwind side of connecting flange bearing connecting pin be connected, to synchronous with the connecting flange The wind wheel locking plate of rotation；Set on the mainframe of engine room cover, to be inserted into the lockhole of the wind wheel locking plate to realize fixed institute State the wind wheel lock pin of wind wheel locking plate position.

Preferably, the drive bearing is specially three-row cylinder roller bearing；The three-row cylinder roller bearing has outer Circle, inner ring and three rows are set to the cylindrical roller group between the outer ring and the inner ring；Wherein, cylindrical roller described in a row Group is axially disposed, and in addition two rows of cylindrical roller groups are disposed radially and are divided into cylinder described in an axially disposed row The weather side and downwind side of roller.

Preferably, the weather side between the outer ring and the inner ring and downwind side are equipped with sealing element and to fixations The pressing plate of the sealing element.

Preferably, the weather side and downwind side of the outer ring are equipped in the stair-stepping positioning shaft shoulder of two-stage；Wherein, described Positioning shaft shoulder is from the inside to the outside successively to be arranged the sealing element and the pressing plate.

Relative to above-mentioned background technique, transmission system provided by the utility model passes through drive bearing, driving section and gear Case generates electricity the torque transfer of wheel hub to generator.Specifically, during hub rotation, drive bearing and transmission Portion is with wheel hub synchronous rotary, and to transmit torque to gear-box, which is passed to generator through gear-box and generates electricity, and The input speed of gear-box is increased to the rated speed of generator to drive generator by the speed increasing gear group in gear-box It generates electricity.As can be seen that this transmission system substitutes the function of main shaft by driving section, since the both ends of driving section connect transmission Bearing and gear-box, and then can reduce the quality of whole system；In addition, the driving section of this transmission system is not necessarily to drive bearing Carrying out hot charging process can directly assemble, and keep the assembly man-hour of this transmission system shorter.

The utility model also provides a kind of wind-driven generator, including wheel hub and generator, further include be set to the wheel hub and Between the generator, transmission system as described in any one of the above embodiments.

Detailed description of the invention

In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only It is the embodiments of the present invention, for those of ordinary skill in the art, without creative efforts, also Other attached drawings can be obtained according to the attached drawing of offer.

Fig. 1 is the structural schematic diagram of transmission system provided by the utility model；

Fig. 2 is the partial enlarged view of part A in Fig. 1；

Wherein,

1- wheel hub, 2- drive bearing, 21- sealing element, 22- pressing plate, 3- mainframe, the driving section 4-, 5- input shaft, 6- wind wheel Locking plate.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

In order to make those skilled in the art more fully understand the utility model, with reference to the accompanying drawing and specifically The utility model is described in further detail for embodiment.

Fig. 1 and Fig. 2 are please referred to, Fig. 1 is the structural schematic diagram of transmission system provided by the utility model；Fig. 2 is in Fig. 1 The partial enlarged view of part A.

Before this, first associated components involved by the technical program are introduced.

Wheel hub 1 is a kind of for installing the component of rotor blade, when effect of the rotor blade by wind-force, rotor blade It transfers load to wheel hub 1 to be rotated with drive hub 1, and then mechanical energy needed for acquisition generator.

The angular speed of usual wheel hub 1 is more than ten turns per minute, in addition to direct-drive aerogenerator, other types wind-power electricity generation The rated speed of generator in machine is generally all several hundred to 1,000 revs/min or more, it can be seen that the revolving speed of wheel hub 1 it is lower and The requirement of electrical power generators frequency can not directly be met, for the rated speed for making the revolving speed of generator reach above-mentioned, need to lead to Crossing gear-box rotates the rotor of generator under amount revolving speed.

Gear-box is also known as gearbox, and gear-box has input shaft 5 and output shaft, and be set to input shaft 5 and output shaft it Between speed increasing gear group, input shaft 5 obtains torque and rotates, and reach the revolving speed of output shaft by speed increasing gear group speedup The rated speed of generator, output shaft drive the rotor of generator to rotate to realize electrical power generators.

A kind of transmission system provided by the utility model, as shown in Figure 1, the transmission system include: to 1 phase of wheel hub The drive bearing 2 even and with wheel hub 1 rotated synchronously；It is connected with drive bearing 2, the transmission to be rotated synchronously with drive bearing 2 Portion 4；It is connected with driving section 4, to output torque to generator and the gear-box that generates electricity under rated speed for generator.Its In, wheel hub 1 is preferably bolted to connection with drive bearing 2, driving section 4 and the preferably company of being bolted of drive bearing 2 It connects.When wheel hub 1 rotates, drive bearing 2 is rotated synchronously with wheel hub 1, and driving section 4 is then rotated synchronously with drive bearing 2, with driving The input shaft 5 of gear-box rotates, and then realizes the mechanical energy of wheel hub 1 being transferred to generator.As can be seen that this transmission system Driving section 4 is instead of main shaft in the prior art, and 2 one side of drive bearing plays the role of base bearing in the prior art, separately On the one hand the transmission effect of main shaft is also acted as, and driving section 4 and drive bearing 2 are jointly by the torque transfer of wheel hub 1 to gear-box Input shaft 5, with play the role of in the prior art main shaft transmitting torque.As can be seen that since driving section 4 only needs connection to be driven The input shaft 5 of bearing 2 and gear-box, without being connected across drive bearing 2 with wheel hub 1, therefore the quality of driving section 4 can be obvious The quality of quality namely this transmission system less than main shaft in the prior art can be lower than the quality of axis system in the prior art； In addition, driving section 4 and the fixed form of drive bearing 2 are fairly simple, without carrying out other process (heat such as in the prior art Dress process) working hour that can realize assembly, and then make staff only and need consuming shorter can complete the dress to this transmission system Match.

More specifically, as shown in Figure 1, the mainframe 3 of engine room cover, wheel hub 1 are fixed in the outer ring of above-mentioned drive bearing 2 It is connected with the weather side of 2 inner ring of drive bearing, driving section 4 is connected with the downwind side of 2 inner ring of drive bearing.Specifically, host Cascaded surface is arranged in frame 3, and the outer ring of drive bearing 2 fits in the cascaded surface of mainframe 3 and will be preferably driven by bolt along axial Mainframe 3 is fixed in the outer ring of bearing 2；And the two sides of the inner ring of drive bearing 2 are respectively fixedly connected with wheel hub 1 and driving section 4, when When wheel hub 1 rotates, under the action of 2 inside roller of drive bearing, the inner ring of drive bearing 2 rotates synchronously with wheel hub 1 and makes to pass Dynamic portion 4 is rotated synchronously with the inner ring of drive bearing 2.Wherein, similar to the upstream and downstream of water flow, weather side herein refers to The position that one wind arrives first at, downwind side then refer to the position reached after this strand of wind.

As shown in Figure 1, above-mentioned driving section 4 is preferably connecting flange in disk form；Wherein, connecting flange have to The connected bearing connecting pin of drive bearing 2 and the transmission connection end to be connected with gear-box, and be sequentially connected end and bearing company The radial direction that end is connect along connecting flange is sequentially distributed.Specifically, compared to the inner ring of drive bearing 2, the position of input shaft 5 is more Close to axle center, that is to say, that bearing connecting pin, that is, connecting flange outer edge part, and the end i.e. connecting flange that is sequentially connected is close to The part in center.

It should be noted that the downwind side at the transmission connection end of the input shaft 5 of gear-box and connecting flange preferably passes through spiral shell Bolt is connected, and certainly, the shaft shoulder to be set with for input shaft 5 can also be arranged in the downwind side of connecting flange, and will by expansion sleeve Input shaft 5 is fixed on the shaft shoulder of connecting flange.

According to the relevant knowledge of mechanics it is found that the center portion of discoidal connecting flange is strong for the machinery of connecting flange The influence of degree is little, as shown in Figure 1, the center of above-mentioned connecting flange offers circular through hole, and then is guaranteeing connecting flange machine Reduce the quality of connecting flange in the case that tool intensity is unaffected, wherein the aperture of above-mentioned circular through hole can be according to input Depending on the actual conditions such as the aperture of 5 inner via hole of axis.

It when abnormal conditions such as failures, needs to control wind-driven generator and shuts down rapidly, namely control wind wheel stops turning It is dynamic, wherein wind wheel refers to the assembly of wheel hub 1 and rotor blade, after wind wheel stalling, needs that wind wheel is made to keep the shape stalled State, in order to staff's debugging.In order to make wheel hub 1 keep the state of stalling, as shown in Figure 1, this transmission system is also wrapped It includes with the locking device for remaining stationary state for connecting flange；Wherein, which includes: with lockhole and and connection method The downwind side of blue bearing connecting pin is connected, the wind wheel locking plate 6 to rotate synchronously with connecting flange；Set on the host of engine room cover Frame 3, the wind wheel lock pin that fixed 6 position of wind wheel locking plate is realized to be inserted into the lockhole of wind wheel locking plate 6.In the prior art In, wind wheel locking plate is fixed on the shaft shoulder of main shaft, and wind wheel lock pin is set to the mainframe of engine room cover, when wind wheel lock pin is inserted into wind wheel When in the lockhole of locking plate, wind wheel locking plate is lived and can not be moved by wind wheel lock pin card, so that being considered as with wind wheel locking plate same The main shaft of rotor can not also rotate, and then realize and wind wheel is kept to stop operating.Since this transmission system eliminates setting for main shaft It counts, and substitutes the effect of main shaft by connecting flange, therefore wind wheel locking plate 6 is fixed by bolts in connecting flange bearing The downwind side of connecting pin, when in the lockhole of wind wheel lock pin insertion wind wheel locking plate 6, the position of wind wheel locking plate 6 is fixed, and is made The inner ring of drive bearing 2 of same rotor must be considered as with wind wheel locking plate 6 and the position of wheel hub 1 is fixed, to realize wheel Hub 1 can not rotate, and then guarantee wind-driven generator and the safety of staff.

It should be noted that the driving device of above-mentioned wind wheel lock pin is referred to the prior art, specific limit is not made herein It is fixed, as long as can control in the lockhole of wind wheel lock pin insertion wind wheel locking plate 6.

The base bearing used in prior art axis system is usually double row tapered roller bearing, and the characteristic of this bearing makes It obtains its installation clearance to be easy to be influenced by circumferential component, it is therefore desirable to configure distance collar in the downwind side of above-mentioned base bearing, wherein The weather side of base bearing is connected with the shaft shoulder of main shaft, and distance collar is sheathed on main shaft, to be precisely controlled double row tapered roller bearing Installation clearance, the size of the installation clearance controls by the thickness of distance collar, wherein the thickness of distance collar is also needed according to master The size of axis and base bearing is calculated, and then needs to decide through consultation distance collar processed to Bearing Factory.

As shown in Figure 1, the drive bearing 2 of this transmission system is preferably three-row cylinder roller bearing；The three-row cylinder roller There are bearing outer ring, inner ring and three rows to be set to the cylindrical roller group between outer ring and inner ring；Wherein, a row cylinder roller group Axially disposed, in addition two row cylinder roller groups are disposed radially and are divided into the upper of an axially disposed row cylinder roller group Wind side and downwind side.It is not influenced by circumferential component since the characteristic of three-row cylinder roller bearing makes it install clearance, this The assembly of drive bearing 2 in transmission system and then can be cancelled without the concern for the installation clearance of three-row cylinder roller bearing The design of distance collar keeps the structure of this transmission system easier, has correspondingly improved the assembly efficiency of staff.

It is carried it should be noted that an above-mentioned axially disposed row cylinder roller group is used to carry the radial of drive bearing 2 Lotus, and the cylindrical roller group that in addition two rows are disposed radially is used to carry the axial load of drive bearing 2；Above-mentioned three rows cylinder rolling The characteristic of sub- bearing and double row tapered roller bearing can refer to paper " the marine large-scale wind electricity machine that Zhang Senlin and Liu Hong are delivered Group main drive chain design selection analysis ".

Since the inside of above-mentioned drive bearing 2 is filled with the lubricants such as lubricating oil or lubricating grease, in order to avoid above-mentioned lubricant Gap during drive bearing 2 rotates between outer ring and inner ring is lost, as shown in Fig. 2, rolling in above-mentioned three rows cylinder Weather side and downwind side between sub- bearing outer ring and inner ring are equipped with sealing element 21 and the pressing plate to fixing seals 21 22.Above-mentioned sealing element 21 be specially radial seal, radial seal between sealed outer ring and inner ring radial gap to avoid Lubricant is lost from the gap, and then guarantees still there is preferable rotating property, this turn after drive bearing 2 rotates for a long time Dynamic performance includes but is not limited to the surface abrasion situation of cylindrical roller.

Specifically, the weather side and downwind side of above-mentioned outer ring are equipped in the stair-stepping positioning shaft shoulder of two-stage；Wherein, on State positioning shaft shoulder by except interior successively sealing element 21 and pressing plate 22 is arranged.By taking the weather side of 2 outer ring of drive bearing as an example, such as Shown in Fig. 2, above-mentioned radial seal is set at the step face in positioning shaft shoulder in the inner part and the foreign steamer with 2 inner ring of drive bearing Exterior feature fitting, to avoid lubricant loss, pressing plate 22 is set at the step face in positioning shaft shoulder in the outer part, close with fixed radial The position of envelope.

To sum up whole improvement projects, compared with the prior art in axis system, power train provided by the utility model System no setting is required main shaft and the two main Assembly parts of distance collar and other secondary Assembly parts (account for about the prior art The 40% of middle axis system components), realize the purpose that structure is more simplified；The overall quality of this transmission system is compared to existing There is the overall quality of axis system in technology to mitigate about 1.8t；This transmission system is not necessarily to carry out the hot charging work of main shaft and base bearing Sequence shortens the assembly man-hour of wind-driven generator 8 hours or more.

In addition to above-mentioned dominant beneficial effect, this transmission system can also generate other recessive beneficial effects, such as phase Than in main shaft, connecting flange is more easily manufactured, and cost is lower, be readily transported etc., no longer it is unfolded one by one herein.

A kind of wind-driven generator provided by the utility model, including wheel hub 1 and generator further include being set to 1 He of wheel hub Between generator, transmission system as described above；The other parts of wheel hub 1, generator and wind-driven generator are referred to existing There is technology, it is not reinflated herein.

Wind-driven generator provided by the utility model and its transmission system are described in detail above.It answers herein The principles of the present invention and embodiment are expounded with specific case, the explanation of above example is only intended to sides Assistant solves the method and its core concept of the utility model.It should be pointed out that for those skilled in the art, Without departing from the principle of this utility model, several improvements and modifications can be made to this utility model, these improvement It is also fallen into the protection scope of the utility model claims with modification.

Claims (10)

1. a kind of transmission system characterized by comprising

To the drive bearing (2) for being connected with wheel hub (1) and being rotated synchronously with wheel hub (1)；

It is connected with the drive bearing (2), the driving section (4) to be rotated synchronously with the drive bearing (2)；

It is connected with the driving section (4), to output torque to generator and the gear that generates electricity under rated speed for generator Case.

2. transmission system according to claim 1, which is characterized in that cabin is fixed in the outer ring of the drive bearing (2) The mainframe (3) of cover, wheel hub (1) are connected with the weather side of the drive bearing (2) inner ring, the driving section (4) and the biography The downwind side of dynamic bearing (2) inner ring is connected.

3. transmission system according to claim 1, which is characterized in that the driving section (4) is specially company in disk form Acting flange；Wherein, the connecting flange have to the bearing connecting pin that is connected with the drive bearing (2) and to it is described The connected transmission connection end of gear-box, and the transmission connection end and the bearing connecting pin along the connecting flange it is radial according to Secondary distribution.

4. transmission system according to claim 3, which is characterized in that the input shaft (5) of the gear-box and the connection The downwind side at flange transmission connection end is connected.

5. transmission system according to claim 4, which is characterized in that the center of the connecting flange offers round logical Hole.

6. transmission system according to claim 3, which is characterized in that further include with so that the connecting flange is remain stationary The locking device of state；Wherein, the locking device includes: the leeward with lockhole and with connecting flange bearing connecting pin Side be connected, the wind wheel locking plate (6) to be rotated synchronously with the connecting flange；Set on the mainframe (3) of engine room cover, to insert Enter the lockhole of the wind wheel locking plate (6) to realize the wind wheel lock pin of fixed wind wheel locking plate (6) position.

7. transmission system according to any one of claims 1 to 6, which is characterized in that the drive bearing (2) is specially three Row cylinder roller bearing；There are the three-row cylinder roller bearing outer ring, inner ring and three rows to be set to the outer ring and described Cylindrical roller group between inner ring；Wherein, cylindrical roller group described in a row is axially disposed, in addition two rows of cylindrical roller groups It is disposed radially and is divided into the weather side and downwind side of cylindrical roller described in an axially disposed row.

8. transmission system according to claim 7, which is characterized in that weather side between the outer ring and the inner ring and Downwind side is equipped with sealing element (21) and the pressing plate (22) to the fixation sealing element (21).

9. transmission system according to claim 8, which is characterized in that the weather side and downwind side of the outer ring, which are equipped with, is in The stair-stepping positioning shaft shoulder of two-stage；Wherein, the positioning shaft shoulder is from the inside to the outside successively to be arranged the sealing element (21) and institute State pressing plate (22).

10. a kind of wind-driven generator, including wheel hub (1) and generator, which is characterized in that further include set on the wheel hub (1) and Between the generator, transmission system as described in any one of claim 1 to 9.