CN217712799U

CN217712799U - Fan blade mounting structure of small wind driven generator

Info

Publication number: CN217712799U
Application number: CN202220680110.7U
Authority: CN
Inventors: 胡奭; 吴限; 涂钢; 张攀; 周建平; 杨玉娇
Original assignee: Sichuan South China Electric Power Design Institute Co ltd
Current assignee: Sichuan South China Electric Power Design Institute Co ltd
Priority date: 2022-03-25
Filing date: 2022-03-25
Publication date: 2022-11-01
Anticipated expiration: 2032-03-25

Abstract

The utility model discloses a fan blade mounting structure of a small wind driven generator, which comprises a hub plate (1), bolts used for fixing fan blades (6) on the hub plate (1), and a backup plate (10) arranged at the mounting end of the fan blades (6); the fan blade support is characterized in that stop blocks (2) are uniformly arranged on the hub disc (1) in the circumferential direction, the number of the stop blocks (2) is the same as that of the fan blades (6) installed on the hub disc (1), and the stop blocks (2) and the backup plate (10) are abutted against each other. The utility model is provided with the stop block on the hub disc, the backup plate is arranged on the fan blade, and the stop block and the backup plate are abutted against each other after installation, the fan blade is blocked by the stop block, the fan blade is prevented from being thrown out by centrifugal force, and the stability of the fan blade is improved; in addition, the hub plate is provided with the sleeve plate, the fan blade is provided with the plug board, and the fan blade can be prevented from loosening towards two sides by clamping the hub plate and the sleeve plate, so that the stability of the fan blade is further improved.

Description

Fan blade mounting structure of small wind driven generator

Technical Field

The utility model relates to a wind power generation technical field specifically indicates a small-size aerogenerator's fan blade mounting structure.

Background

The wind power generator is an electric power device which converts wind energy into mechanical work, and the mechanical work drives a rotor to rotate so as to finally output alternating current. The wind-driven generator generally comprises fan blades, a hub plate, a generator, a direction regulator, a tower, a speed-limiting safety mechanism, an energy storage device and other components.

The fan blades of the traditional wind driven generator are usually simply installed on a hub disc by bolts, and the fan blades are easy to loosen in the installation mode, so that the fan blades can be thrown out due to centrifugal force when the rotating speed of the fan blades is high, and safety accidents are caused.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to solve the above problem, provide a small-size aerogenerator's fan blade mounting structure, its fixed fan blade that can be more firm prevents that the fan blade from breaking away from with the wheel hub dish.

The purpose of the utility model is realized through the following technical scheme: the fan blade mounting structure of the small wind driven generator comprises a hub plate, bolts for fixing fan blades on the hub plate and a backup plate arranged at the mounting ends of the fan blades; the fan blade support is characterized in that stop blocks are uniformly arranged on the hub disc in the circumferential direction, the number of the stop blocks is the same as that of the fan blades mounted on the hub disc, the stop blocks are abutted against the backup plate, and the backup plate is located on one side close to the center of the hub disc.

The fan blade mounting structure of the small wind driven generator also comprises a plug board arranged at the mounting end of the fan blade and a plug component arranged on the hub plate; the inserting components are uniformly arranged on the hub disc in the circumferential direction, the number of the inserting components is the same as that of the stop blocks, the inserting components and the stop blocks are positioned on the same surface of the hub disc, and the inserting components are positioned on the inner side of the stop blocks; the plug board is connected with the plug component and is fixed through the bolt.

The inserting component is a sleeve plate, an inserting cavity is formed between the sleeve plate and the surface of the hub plate, and the inserting plate is inserted into the inserting cavity and fixed with the sleeve plate through the bolt.

The end part of the plugboard is provided with a supporting block for supporting the plugboard.

The fan blade mounting structure of the small wind driven generator further comprises a lower concave platform and an upper concave platform which are arranged on the fan blade, and the lower concave platform and the upper concave platform are respectively positioned on the upper surface and the lower surface of the fan blade; the lower concave platform on one fan blade is mutually clamped with the upper concave platform of the other adjacent fan blade, and the fan blades are fixed through bolts.

The lower concave platform and the upper concave platform are symmetrically arranged with the central axis of the fan blade.

The center of the hub plate is provided with a mounting hole.

The dog with the backup plate all is the arc.

Compared with the prior art, the method has the following beneficial effects:

(1) The utility model discloses be provided with the dog on the hub disc, be provided with the backup plate on the fan blade to dog and backup plate support each other and lean on after the fan blade installation, block the fan blade through the dog, prevent that the fan blade from being thrown away by centrifugal force, improved the stability of fan blade.

(2) The utility model is provided with a sleeve plate on the hub plate, a splicing cavity is formed between the sleeve plate and the surface of the hub plate, a splicing plate which can be inserted into the splicing cavity is arranged on the fan blade, and the splicing plate is fixed with the sleeve plate through a bolt; through the centre gripping of hub plate and lagging, can prevent that the fan blade from taking off to both sides, further improvement the stability of fan blade.

(3) The utility model discloses set up recessed platform and last concave station on the fan blade to recessed platform on a fan blade and the mutual block of last concave station of another adjacent fan blade, and through the bolt fastening, can make the fan blade link into an integrated entity like this, improve the linkage nature of fan blade, make the stability of fan blade better.

Additional features of the present application will be set forth in part in the description which follows. Additional features of some aspects of the present application will be apparent to those of ordinary skill in the art in view of the following description and accompanying drawings, or in view of the production or operation of the embodiments. The features disclosed in this application may be realized and attained by practice or use of various methods, instrumentalities and combinations of the specific embodiments described below.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. Like reference symbols in the various drawings indicate like elements. Wherein the content of the first and second substances,

fig. 1 is a top view of the hub plate of the present invention.

Fig. 2 is a cross-sectional view taken at a-a in fig. 1.

Fig. 3 is a structural view of a fan blade.

Fig. 4 is a sectional view taken at B-B in fig. 3.

Fig. 5 is a schematic view of a fan blade mounted on a hub plate.

The reference numbers in the above figures refer to: the wind power generation device comprises a hub disc, 2 stop blocks, 3 sleeve plates, 4 mounting holes, 5 inserting cavities, 6 fan blades, 7 concave tables, 8 inserting plates, 9 concave tables, 10 backup plates and 11 supporting blocks.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that if the terms "first", "second", etc. are used in the description and claims of this application and in the above-described drawings, they are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, if the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

In this application, if the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "center", "vertical", "horizontal", "lateral", "longitudinal", etc. are referred to, their indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used in other meanings besides orientation or positional relationship, for example, the term "upper" may also be used in some cases to indicate a certain attaching or connecting relationship. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.

Furthermore, in this application, the terms "mounted," "disposed," "provided," "connected," "sleeved," and the like should be construed broadly if they are referred to. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

It should be noted that, in the present application, the embodiments and features of the embodiments may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

Example 1

As shown in fig. 1 to 4, the present embodiment discloses a blade mounting structure of a small wind power generator, which includes a hub plate 1, a bolt for fixing a blade 6 on the hub plate 1, and a backup plate 10 disposed at a mounting end of the blade 6. The backup plate 10 and the fan blade 6 are integrally formed.

In addition, the hub disc 1 is provided with the stop blocks 2 which are uniformly distributed in the circumferential direction, and the number of the stop blocks 2 is the same as that of the fan blades 6 which are installed on the hub disc 1, namely, one stop block 2 corresponds to one fan blade 6. The stop block 2 and the backup plate 10 are both arc-shaped, and the stop block 2 and the backup plate 10 abut against each other, and the backup plate 10 is located on one side close to the center of the hub plate 1, that is, the stop block 2 is located on the outer side of the backup plate 10.

The hub disk 1 is provided with a mounting hole 4 at the center thereof, and the hub disk 1 can be mounted on the rotating shaft of the wind turbine through the mounting hole 4.

When the fan blade 6 is installed, the fan blade 6 is placed on the surface of the hub plate 1, the backup plate 10 and the stop block 2 are abutted against each other, and then the fan blade 6 is fixed on the hub plate 1 through bolts. The fan blade 6 is blocked by the mutual abutting of the stop block 2 and the backup plate 10, the fan blade 6 is prevented from being thrown out by centrifugal force, and the stability of the fan blade 6 is improved.

Example 2

The fan blade mounting structure of the small wind driven generator of the embodiment further comprises a plug board 8 and a plug component on the basis of the embodiment 1; the plug-in plate 8 is arranged on the mounting end of the fan blade 6, and the plug-in part is arranged on the hub plate 1. In addition, the number of the plug-in parts is the same as that of the stoppers 2, and the plug-in parts are uniformly distributed on the hub disc 1 in the circumferential direction. The plug part and the stop 2 are located on the same surface of the hub plate 1 and the plug part is located inside said stop 2.

In particular, the attachment member is a strap 3, and the strap 3 comprises a face plate and a shroud plate connected to the face plate, the shroud plate being connected to the hub plate 1 such that an attachment cavity 5 is formed between the one-piece strap 3 and a surface of the hub plate 1, as shown in fig. 2. Inside this plugboard 8 can insert grafting chamber 5, in addition, all be provided with the screw hole on this plugboard 8 and the lagging 3, insert grafting 5 inside backs in chamber when plugboard 8, the rethread bolt is fixed.

In order to make the installation of the fan blades 6 more stable, as shown in fig. 3, the end of the plug board 8 is provided with a supporting block 11 for supporting the plug board 8, and the supporting block 11 and the backup plate 10 are located on the same surface of the fan blade, that is, both located on the surface facing the hub plate 1.

During the installation, insert grafting chamber 5 with plugboard 8 in, outwards draw fan blade 6 again, make backup plate 10 and dog 2 support and lean on, the screw hole cooperation on the screw hole on the lagging 3 and the plugboard 8 this moment, the rethread bolt with plugboard 8 with lagging 3 fixed can. In the embodiment, the fan blade 6 is clamped by the hub plate 1 and the sleeve plate 3, so that the fan blade 6 can be prevented from loosening towards two sides, and the stability of the fan blade 6 is further improved.

Example 3

As shown in fig. 3 and 4, the blade mounting structure of the small wind power generator of the present embodiment is based on

embodiment

1 or 2, and further includes a lower concave platform 7 and an upper concave platform 9, which are disposed on the blade 6. Specifically, the lower concave platform 7 and the upper concave platform 9 are respectively positioned on the upper surface and the lower surface of the fan blade 6 and are close to the connecting end of the fan blade 6, and threaded holes are formed in the lower concave platform 7 and the upper concave platform 9. In addition, the lower concave platforms 7 and the upper concave platforms 9 are symmetrically arranged with the central axis of the fan blade 6, so that after all the fan blades 6 are installed on the hub plate 1, the lower concave platform 7 on one fan blade 6 is mutually clamped with the upper concave platform 9 of the other adjacent fan blade 6, and at the moment, the lower concave platform 7 and the upper concave platform 9 are fixed through bolts, so that all the fan blades 6 can be connected together, as shown in fig. 5, the linkage of the fan blades 6 can be improved, and the stability of the fan blades 6 is better.

It should be noted that all of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except for mutually exclusive features and/or steps.

In addition, the above embodiments are exemplary, and those skilled in the art can devise various solutions in light of the disclosure, which are also within the scope of the disclosure and the protection scope of the present invention. It should be understood by those skilled in the art that the present specification and drawings are illustrative only and are not limiting upon the claims. The scope of the invention is defined by the claims and their equivalents.

Claims

1. Small-size aerogenerator's fan blade mounting structure, including hub plate (1) and be used for fixing fan blade (6) bolt on hub plate (1), its characterized in that: the wind power generation device also comprises a backup plate (10) arranged at the mounting end of the fan blade (6); the fan blade support is characterized in that stop blocks (2) are uniformly arranged on the hub disc (1) in the circumferential direction, the number of the stop blocks (2) is the same as that of the fan blades (6) mounted on the hub disc (1), the stop blocks (2) and the backup plate (10) are abutted against each other, and the backup plate (10) is located on one side close to the center of the hub disc (1).

2. The fan blade mounting structure of a small wind-driven generator according to claim 1, wherein: the fan hub further comprises a plug board (8) arranged at the mounting end of the fan blade (6) and a plug component arranged on the hub disc (1); the inserting components are uniformly arranged on the hub disc (1) in the circumferential direction, the number of the inserting components is the same as that of the stop blocks (2), the inserting components and the stop blocks are positioned on the same surface of the hub disc (1), and the inserting components are positioned on the inner side of the stop blocks (2); the plug-in board (8) is connected to the plug-in part and is fixed by the screw.

3. The fan blade mounting structure of a small wind-driven generator according to claim 2, wherein: the inserting component is a sleeve plate (3), an inserting cavity (5) is formed between the sleeve plate (3) and the surface of the hub plate (1), and the inserting plate (8) is inserted into the inserting cavity (5) and is fixed with the sleeve plate (3) through the bolt.

4. The blade mounting structure of a small wind-driven generator according to claim 3, wherein: the end part of the plug board (8) is provided with a supporting block (11) for supporting the plug board (8).

5. The blade mounting structure of a small wind-driven generator according to claim 1, wherein: the fan blade is characterized by further comprising a lower concave platform (7) and an upper concave platform (9) which are arranged on the fan blade (6), wherein the lower concave platform (7) and the upper concave platform (9) are respectively positioned on the upper surface and the lower surface of the fan blade (6); the lower concave platform (7) on one fan blade (6) is mutually clamped with the upper concave platform (9) of the other adjacent fan blade (6) and is fixed through a bolt.

6. The fan blade mounting structure of a small wind-driven generator according to claim 5, wherein: the lower concave platform (7) and the upper concave platform (9) are symmetrically arranged with the central axis of the fan blade (6).

7. The blade mounting structure of a small wind-driven generator according to claim 1, wherein: the center of the hub plate (1) is provided with a mounting hole (4).

8. The fan blade mounting structure of a small wind-driven generator according to claim 1, wherein: the stop block (2) and the backup plate (10) are both arc-shaped.