CN209800162U

CN209800162U - Variable pitch mechanism of wind generating set

Info

Publication number: CN209800162U
Application number: CN201920690564.0U
Authority: CN
Inventors: 张立业
Original assignee: Hebei Tianfeng Wind Power Equipment Maintenance Service Co Ltd
Current assignee: Hebei Tianfeng Wind Power Equipment Maintenance Service Co Ltd
Priority date: 2019-05-15
Filing date: 2019-05-15
Publication date: 2019-12-17
Anticipated expiration: 2029-05-15

Abstract

The utility model discloses a variable-pitch mechanism of a wind generating set, which belongs to the technical field of wind generators and comprises a support frame and a fixed shell, wherein the fixed shell is connected with the support frame, the fixed shell is provided with a wind wheel, a generator and a variable-pitch device, the variable-pitch device and the generator are respectively connected with the wind wheel, the variable-pitch device comprises a variable-pitch bearing, the variable-pitch bearing comprises a bearing inner ring and a bearing outer ring, the circumferential direction of the bearing outer ring is distributed with a first through hole connected with a hub, the circumferential direction of the bearing inner ring is distributed with a second through hole connected with a blade, the inner side of the bearing inner ring is provided with a boss protruding towards the circle center, the boss is provided with a pin shaft mounting hole matched with a variable-pitch pin shaft, the inside of the fixed shell is provided with a heat dissipation device, the heat dissipation device, thereby being applicable to different wind directions.

Description

Variable pitch mechanism of wind generating set

Technical Field

The utility model relates to a wind power generation equipment technical field, more specifically say, relate to a wind generating set's becomes oar mechanism.

Background

The wind generating set requires that the angle of the blade is changed according to the wind speed, so that the wind generating set adapts to the change of the wind speed, protects a fan and improves the efficiency of the wind generating set. At present, the pitch of the wind generating set in China is realized by installing a driving device in a hub, directly connecting the driving device on a pitch bearing, driving the pitch bearing to rotate to complete the pitch variation action, for a wind generating set adopting hydraulic pitch variation, a pitch variation bearing is core mechanical technical equipment, which is fixed on a hub, one end of which is connected with a hydraulic system through a variable pitch pin shaft fixed on a hub web plate, the other end is connected with a blade, thereby achieving the purpose of hydraulic pitch control, the pitch control mechanism in the prior art has higher use cost, in addition, each part of the wind generating set in the prior art can generate a large amount of heat in the working process, if can not in time then can influence the life of each part to its heat dissipation, in case take place to damage, still need change it, further increase use cost, the utility model discloses a new solution is proposed to above problem.

SUMMERY OF THE UTILITY MODEL

1. Technical problem to be solved

To the problem that exists among the prior art, the utility model aims to provide a wind generating set's becomes oar mechanism to solve the wind generating set heat dispersion that mentions among the background art poor and become oar mechanism use high cost scheduling problem.

2. Technical scheme

In order to solve the above problems, the utility model adopts the following technical proposal.

A variable-pitch mechanism of a wind generating set comprises a support frame and a fixed shell, wherein the fixed shell is connected with the support frame, a wind wheel, a generator and a variable-pitch device are arranged on the fixed shell, the variable-pitch device and the generator are respectively connected with the wind wheel, the wind wheel adjusts the rotation direction through the variable-pitch device, the variable-pitch device comprises a variable-pitch bearing, the variable-pitch bearing comprises a bearing inner ring and a bearing outer ring, a first through hole connected with a hub is distributed in the circumferential direction of the bearing outer ring, a second through hole connected with a blade is distributed in the circumferential direction of the bearing inner ring, a boss protruding towards the circle center is arranged on the inner side of the bearing inner ring, a pin shaft mounting hole matched with a variable-pitch pin shaft is arranged on the boss, a heat dissipation device is arranged in the fixed shell, the heat, the heat dissipation fan is provided with a plurality of and links to each other with the mount respectively, the support frame includes base and stand, stand one end links to each other with fixed casing, and the other end links to each other with the base, establish fastening assembly on the base, fastening assembly is including accepting board and lug, it links together with base detachable to accept the board, the lug is installed on the top of accepting the board, fixed casing passes through the rope and links together with the lug.

Preferably, the side wall of the fixed shell is provided with a hanging ring corresponding to the lifting lug.

In any of the above embodiments, preferably, the receiving plate is L-shaped and detachably connected to the base by a bolt.

In any of the above aspects, preferably, the receiving plate and the base are provided with a plurality of screw holes corresponding to each other.

In any of the above aspects, preferably, a plurality of the fastening assemblies and the lifting rings are respectively provided corresponding to each other.

In any of the above aspects, preferably, the boss is integrally connected to the bearing inner race.

In any of the above schemes, preferably, the top of the boss is circular arc-shaped, and the boss is connected with the bearing inner ring in a circular arc shape.

In any of the above schemes, preferably, the fixing housing is provided with heat dissipation holes corresponding to the heat dissipation fans, and the heat dissipation holes are provided with dust screens.

3. Advantageous effects

Compared with the prior art, the utility model has the advantages of:

The utility model discloses in through the use angle of the regulation wind wheel that becomes the oar device can be fine, thereby can be applicable to different wind directions, in addition, through with the boss integration to become oar bearing inner circle, can save two webs that the tradition becomes oar bearing system needs, the manufacturing cost is saved, in addition, it further fixes fixed casing and base to use the rope, the firmness of the fixed casing is improved, in addition, the design of a plurality of screw holes makes and accepts the board and be connected more firmly with the base, and through bolted connection, it dismantles and installs to have made things convenient for it, the inside heat of the fixed casing of discharge that the design of heat dissipation fan and louvre can be fine.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

Fig. 2 is the structure schematic diagram of the pitch bearing of the present invention.

The reference numbers in the figures illustrate:

1. The variable-pitch wind power generation device comprises a fixed shell, 2, a wind wheel, 3, a generator, 4, a variable-pitch device, 5, a bearing inner ring, 6, a bearing outer ring, 7, a first through hole, 8, a second through hole, 9, a boss, 10, a variable-pitch pin shaft, 11, a pin shaft mounting hole, 12, a fixing frame, 13, a heat dissipation fan, 14, a base, 15, a stand column, 16, a lifting lug, 17, a rope, 18, a lifting ring, 19, a heat dissipation hole, 20 and a stand column.

Detailed Description

The technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiment of the present invention; obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention based on the embodiments of the present invention.

Example 1:

Referring to fig. 1-2, a variable pitch mechanism of a wind generating set comprises a support frame and a fixed housing 1, the fixed housing 1 is connected with the support frame, the fixed housing 1 is provided with a wind wheel 2, a generator 3 and a variable pitch device 4, the variable pitch device 4 and the generator 3 are respectively connected with the wind wheel 2, the wind wheel 2 adjusts the rotation direction through the variable pitch device 4, the variable pitch device 4 comprises a variable pitch bearing, the variable pitch bearing comprises a bearing inner ring 5 and a bearing outer ring 6, a first through hole 7 connected with a hub is distributed in the circumferential direction of the bearing outer ring 6, a second through hole 8 connected with a blade is distributed in the circumferential direction of the bearing inner ring 5, a boss 9 protruding towards the center of a circle is arranged on the inner side of the bearing inner ring 5, a pin shaft mounting hole 11 matched with a variable pitch pin shaft 10 is arranged on the boss 9, and a, the heat dissipation device comprises a fixing frame 12 and a heat dissipation fan 13, wherein the fixing frame 12 is detachably installed inside a fixing shell body 1, the heat dissipation fan 13 is provided with a plurality of fixing frames and is respectively connected with the fixing frame 12, the supporting frame comprises a base 14 and a stand column 20, one end of the stand column 20 is connected with the fixing shell body 1, the other end of the stand column is connected with the base 14, a fastening assembly is arranged on the base 14 and comprises a bearing plate 15 and a lifting lug 16, the bearing plate 15 is detachably connected with the base 14, the lifting lug 16 is installed at the top end of the bearing plate 15, and the fixing shell body 1 is connected with the lifting lug 16 through a rope 17.

In the present embodiment, in order to better connect the stationary housing and the base together, the side wall of the stationary housing 1 is provided with a hanging ring 18 corresponding to the hanging lug 16.

In this embodiment, for better and more convenient use of the receiving plate and the base, the receiving plate 15 is L-shaped and detachably connected with the base 14 through a bolt, which facilitates the detachment and installation thereof.

In this embodiment, the receiving plate 15 and the base 14 are provided with a plurality of corresponding threaded holes, and the receiving plate 15 and the base 14 are more firmly connected due to the design of the plurality of threaded holes.

In this embodiment, in order to better connect the fixed housing and the base together, a plurality of fastening assemblies and lifting rings 18 are respectively arranged corresponding to each other.

In the embodiment, the boss 9 is integrally connected with the bearing inner ring 5 for better use of the boss and the bearing inner ring.

In this embodiment, for better use of the boss, the top of the boss 9 is arc-shaped, and the boss 9 is connected with the bearing inner ring 5 in an arc shape, so that the boss 9 is convenient to use.

In this embodiment, in order to better use the fixed housing, the fixed housing 1 is provided with a heat dissipation hole 19 corresponding to the heat dissipation fan 13, the heat dissipation hole 19 is provided with a dust screen, and the heat dissipation hole 19 is designed to timely discharge heat.

Example 2:

on the basis of embodiment 1, when in use, the fixed shell 1 is connected with the base 14 through the rope 17, the wind wheel 2 is blown by external wind, the wind wheel 2 rotates to drive the generator 3 to generate electricity, in addition, the different rotating directions of the wind wheel 2 can be well changed according to different wind directions through the variable-pitch device 4, the heat dissipation fan 13 in the utility model is electrically connected with the generator 3, the generator 3 supplies power to the heat dissipation fan 13, and the heat dissipation fan 13 dissipates internal heat, the variable-pitch bearing of the variable-pitch device 4 in the prior art is mainly reformed, two webs required by the traditional variable-pitch bearing system can be saved by integrating the lug boss 9 into the inner ring 5 of the variable-pitch bearing, thereby not only simplifying the variable-pitch bearing system, saving the manufacturing cost, saving the assembly time and the maintenance time of the webs, but also reducing the installation risk brought by the webs, and also reduces the additional stresses caused by web deformation.

The above description is only the preferred embodiment of the present invention; the scope of the present invention is not limited thereto. Any person skilled in the art should also be able to cover the technical scope of the present invention by replacing or changing the technical solution and the improvement concept of the present invention with equivalents and modifications within the technical scope of the present invention.

Claims

1. a variable-pitch mechanism of a wind generating set comprises a supporting frame and a fixed shell (1), wherein the fixed shell (1) is connected with the supporting frame, and the variable-pitch mechanism is characterized in that a wind wheel (2), a generator (3) and a variable-pitch device (4) are arranged on the fixed shell (1), the variable-pitch device (4) and the generator (3) are respectively connected with the wind wheel (2), the wind wheel (2) adjusts the rotating direction through the variable-pitch device (4), the variable-pitch device (4) comprises a variable-pitch bearing, the variable-pitch bearing comprises a bearing inner ring (5) and a bearing outer ring (6), a first through hole (7) connected with a hub is distributed in the circumferential direction of the bearing outer ring (6), a second through hole (8) connected with blades is distributed in the circumferential direction of the bearing inner ring (5), and a boss (9) protruding towards the circle center is arranged on the inner, the boss (9) is provided with a pin shaft mounting hole (11) matched with the variable pitch pin shaft (10), a heat dissipation device is arranged in the fixed shell (1), the heat dissipation device comprises a fixed frame (12) and a heat dissipation fan (13), the fixing frame (12) is detachably arranged in the fixed shell (1), the heat dissipation fans (13) are provided with a plurality of heat dissipation fans which are respectively connected with the fixing frame (12), the supporting frame comprises a base (14) and an upright post (20), one end of the upright post (20) is connected with the fixed shell (1), the other end is connected with the base (14), a fastening component is arranged on the base (14), the fastening component comprises a bearing plate (15) and a lifting lug (16), the bearing plate (15) is detachably connected with the base (14), the lifting lug (16) is arranged at the top end of the bearing plate (15), the fixed shell (1) is connected with a lifting lug (16) through a rope (17).

2. A pitch mechanism of a wind turbine according to claim 1, wherein: and a lifting ring (18) corresponding to the lifting lug (16) is arranged on the side wall of the fixed shell (1).

3. A pitch mechanism of a wind turbine according to claim 1, wherein: the bearing plate (15) is L-shaped and is detachably connected with the base (14) through bolts.

4. A pitch mechanism of a wind turbine according to claim 1, wherein: the bearing plate (15) and the base (14) are provided with a plurality of threaded holes corresponding to each other.

5. a pitch mechanism of a wind turbine according to claim 2, wherein: the fastening component and the lifting ring (18) are respectively provided in a plurality corresponding to each other.

6. A pitch mechanism of a wind turbine according to claim 2, wherein: the boss (9) is integrally connected with the bearing inner ring (5).

7. a pitch mechanism of a wind turbine according to claim 1, wherein: the top of the boss (9) is arc-shaped, and the boss (9) is connected with the bearing inner ring (5) in an arc shape.

8. A pitch mechanism of a wind turbine according to claim 1, wherein: the fixed shell (1) is provided with heat dissipation holes (19) corresponding to the heat dissipation fans (13), and the heat dissipation holes (19) are provided with dust screens.