CN214998982U

CN214998982U - Braking device for wind driven generator

Info

Publication number: CN214998982U
Application number: CN202120700044.0U
Authority: CN
Inventors: 王东军
Original assignee: Huaneng Manzhouli Wind Power Generation Co ltd
Current assignee: Huaneng Manzhouli Wind Power Generation Co ltd
Priority date: 2021-04-06
Filing date: 2021-04-06
Publication date: 2021-12-03
Anticipated expiration: 2031-04-06

Abstract

The utility model provides a arresting gear for aerogenerator relates to the wind power generation field, including frame, braking shell and damper assembly: the inside generator that is provided with of frame, generator one side is connected with the electricity generation pivot, the electricity generation pivot outside sets up and is provided with the brake disc, and the brake disc outside rotates through the pivot and is connected with a plurality of brake pads, is connected with brake spring between brake disc and the brake pad, and frame one side fixedly connected with braking shell, braking shell inboard are provided with the braking inner shell, are provided with damper between braking shell and the braking inner shell. This kind of arresting gear for aerogenerator derives frictional heat rapidly through fin and louvre, and the vibrations that will brake the inner shell through the cooperation of shock attenuation upper plate and shock attenuation hypoplastron simultaneously reduce, improves aerogenerator's stability and security.

Description

Braking device for wind driven generator

Technical Field

The utility model relates to a wind power generation technical field specifically is a arresting gear for aerogenerator.

Background

The wind driven generator is mostly installed in areas with strong wind power, so that the generated energy is improved, but at the same time, when the wind power is too large, the generator is easy to damage due to faults such as stalling and the like, and the braking device of the wind driven generator is particularly important.

The utility model discloses a current utility model discloses a arresting gear for aerogenerator is disclosed for CN211202200U, can realize the slow function to the axis of rotation through the slip frictional force between friction disc and the friction ring, reduces the condition because of the rotational speed takes place the runaway too fast, is applicable to middle-size and small-size aerogenerator.

However, the temperature of the braking device for the wind driven generator rises rapidly in the process of long-time friction braking, the generator is easy to burn, meanwhile, the braking device does not have the damping capacity, and the structural stability cannot be guaranteed when wind power is large.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the shortcoming that exists among the background art, provide a arresting gear for aerogenerator, derive frictional heat rapidly through fin and louvre, reduce the vibrations of braking the inner shell through the cooperation of shock attenuation upper plate and shock attenuation hypoplastron simultaneously, improve aerogenerator's stability and security.

In order to achieve the above object, the utility model provides a following technical scheme, a arresting gear for aerogenerator, including frame, braking shell and damper assembly:

a generator is arranged in the base, a generating rotating shaft is connected to one side of the generator, a brake disc is arranged on the outer side of the generating rotating shaft, a plurality of brake blocks are rotatably connected to the outer side of the brake disc through rotating shafts, and a brake spring is connected between the brake disc and the brake blocks;

the brake device is characterized in that a brake outer shell is fixedly connected to one side of the machine base, a brake inner shell is arranged on the inner side of the brake outer shell, and a damping assembly is arranged between the brake outer shell and the brake inner shell.

Further, the damping assembly comprises a damping lower plate, a damping upper plate, a buffer spring and a damping spring, the damping lower plate is arranged on the outer side of the brake inner shell, the damping upper plate is arranged on the inner side of the brake outer shell, the buffer spring is connected between the damping upper plate and the damping upper plate, and the damping spring is arranged on the outer sides of the damping upper plate and the damping upper plate.

Furthermore, the damping lower plate, the damping upper plate, the buffer springs and the damping springs are uniformly arranged and distributed in an annular equal-angle mode between the brake outer shell and the brake inner shell.

Furthermore, the outer sides of the brake blocks are provided with cushion pads, and the inner side of the brake inner shell is provided with a friction ring.

Furthermore, a plurality of radiating holes are formed in the surface of the brake inner shell, and a plurality of groups of radiating fins are arranged on the outer side of the brake inner shell.

Furthermore, the power generation rotating shaft penetrates through the inner sides of the engine base and the brake shell and protrudes out of the outer side of the brake shell.

The utility model provides a arresting gear for aerogenerator has following beneficial effect:

1. the utility model has the advantages of, it is rotatory to be driven by wind when aerogenerator, and rotation speed when great, the brake pads will be because centrifugal force and remove to braking inner shell inner wall, simultaneously with brake spring extension, when the brake pads contacts the braking inner shell, the blotter will rub with the friction ring mutually, the heat that the friction produced this moment will be discharged from the louvre, simultaneously, the heat that the friction ring produced will be through braking inner shell transmission to the fin in, a plurality of fin have accelerated the heat exchange rate with the air, reach the function of heat dissipation cooling.

2. Secondly, aerogenerator will shake greatly when wind-force is great, and the braking inner shell will shake transmission to the shock attenuation hypoplastron this moment, and the shock attenuation hypoplastron will move to the shock attenuation upper plate and extrude buffer spring simultaneously, and buffer spring will partly shake absorption this moment, and the vibrations of braking inner shell will be simultaneously extruded damping spring for damping spring absorbs partial vibrations, owing to all be provided with damping spring in the braking inner shell outside, reach the shock attenuation purpose.

Drawings

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

Fig. 2 is a front view of the overall structure of the present invention.

Fig. 3 is a side sectional view of the overall structure of the present invention.

Fig. 4 is an enlarged schematic view of a structure in fig. 3 according to the present invention.

Fig. 5 is an enlarged schematic view of the structure at B in fig. 1 according to the present invention.

Fig. 6 is a front view of the brake disc structure of the present invention.

In FIGS. 1-6: 1. a machine base; 101. a generator; 102. a power generation rotating shaft; 2. a brake housing; 3. a brake disc; 301. a brake pad; 3011. a cushion pad; 302. a brake spring; 4. braking the inner shell; 401. a heat sink; 402. heat dissipation holes; 5. a damping lower plate; 6. a shock-absorbing upper plate; 601. a buffer spring; 7. a shock absorbing spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example (b):

referring to figures 1-6 of the drawings,

the braking device for the wind driven generator provided by the embodiment comprises a base 1, a braking shell 2 and a damping component:

a generator 101 is arranged in the base 1, one side of the generator 101 is connected with a generating rotating shaft 102, a brake disc 3 is arranged on the outer side of the generating rotating shaft 102, the outer side of the brake disc 3 is rotatably connected with a plurality of brake blocks 301 through the rotating shaft, and a brake spring 302 is connected between the brake disc 3 and the brake blocks 301;

a brake outer shell 2 is fixedly connected to one side of the machine base 1, a brake inner shell 4 is arranged on the inner side of the brake outer shell 2, and a damping assembly is arranged between the brake outer shell 2 and the brake inner shell 4.

Further, the damping component includes shock attenuation hypoplastron 5, shock attenuation upper plate 6, buffer spring 601 and damping spring 7, the 4 outsides of braking inner shell are provided with a plurality of

shock attenuation hypoplastron

5, 2 inboard of braking outer shell are provided with a plurality of shock attenuation upper plate 6, all be connected with buffer spring 601 between a plurality of shock attenuation upper plate 6 and the shock attenuation upper plate 6, a plurality of shock attenuation upper plate 6 all is provided with damping spring 7 with the shock attenuation upper plate 6 outside, make when 4 vibrations of braking inner shell are great, 4 will shake transmission to shock attenuation hypoplastron 5 of braking inner shell, shock attenuation hypoplastron 5 will be to the shock attenuation upper plate 6 removal simultaneously extrusion buffer spring 601, buffer spring 601 absorbs partial vibrations this moment, 4 vibrations of braking inner shell are simultaneously extruded damping spring 7, make damping spring 7 absorb partial vibrations.

Furthermore, the damping lower plate 5, the damping upper plate 6, the buffer springs 601 and the damping springs 7 are uniformly arranged and distributed in an annular equal-angle mode between the brake outer shell 2 and the brake inner shell 4, so that the brake inner shell 4 can absorb vibration by the groups of buffer springs 601 and the damping springs 7 when vibrating, and the condition that the damage is caused by too large vibration of the wind driven generator is prevented.

Further, the outer sides of the plurality of brake pads 301 are provided with cushion pads 3011, the inner side of the brake inner shell 4 is provided with a friction ring, when the rotating speed of the power generation rotating shaft 102 is too high, the brake pads 301 move towards the inner wall of the brake inner shell 4, and when the brake pads and the inner shell are contacted, the cushion pads 3011 will rub against the friction ring, and the rotating speed of the power generation rotating shaft 102 is reduced through friction force.

Further, a plurality of louvres 402 have been seted up on braking inner shell 4 surface, braking inner shell 4 outside is provided with multiunit fin 401, when blotter 3011 rubs with the friction ring for a long time, will produce great heat, the heat that the friction produced this moment will be discharged from louvre 402, simultaneously, the heat that the friction ring produced will be through braking inner shell 4 transmission to the most in the group fin 401, multiunit fin 401 can accelerate with the heat exchange rate of air, reach the function of heat dissipation cooling.

Furthermore, the power generation rotating shaft 102 penetrates through the inner sides of the base 1 and the brake housing 2 and protrudes out of the brake housing 2, and the rotating position of the power generation rotating shaft 101 is limited through the base 1 and the brake housing 2, so that the power generator 101 and the power generation rotating shaft 102 can keep a relatively parallel and stable state, and the condition that the wind driven generator fails due to the instability of the power generation rotating shaft 102 is avoided.

In the actual working process, when the wind driven generator normally operates, the power generation rotating shaft 102 is driven to rotate, meanwhile, the generator 102 converts the mechanical energy of the power generation rotating shaft into electric energy, at the moment, because the rotating speed of the power generation rotating shaft 102 is low, the centrifugal force is not enough to enable the brake block 301 in the brake disc 3 to move towards the inner wall of the brake inner shell 4, at the moment, the brake block 301 is limited by the brake spring 302, when the rotating speed of the wind driven generator is too high, the brake block 301 moves towards the inner wall of the brake inner shell 4 due to the centrifugal force, and simultaneously, the brake spring 302 is stretched, when the brake block 301 contacts the brake inner shell 4, the cushion 3011 will rub against the friction ring, the rotating speed of the power generation rotating shaft 102 is reduced through the friction force, when the cushion 3011 rubs against the friction ring for a long time, a large amount of heat will be generated, at the moment, the heat generated by the friction will be discharged from the heat radiation holes 402, and at the same time, the heat generated by the friction ring can be transmitted to a plurality of groups of radiating fins 401 through the brake inner shell 4, the radiating fins 401 accelerate the heat exchange rate with the air, and the function of heat dissipation and temperature reduction is achieved, when the rotating speed of the power generation rotating shaft 102 is reduced, the brake spring 302 pulls back the brake block 301, the cushion 3011 can be separated from the friction ring, the wind driven generator operates normally, when the wind power is large, the wind driven generator will vibrate greatly, at the moment, the brake inner shell 4 transmits the vibration to the damping lower plate 5, the damping lower plate 5 will move to the damping upper plate 6 and press the cushion spring 601 at the same time, at the moment, the cushion spring 601 absorbs part of the vibration, at the same time, the vibration of the brake inner shell 4 extrudes the cushion spring 7, so that the cushion spring 7 absorbs part of the vibration, and because the cushion spring 7 is arranged on the outer side of the brake inner shell 4, the vibration of the brake inner shell 4 can be absorbed by the plurality of groups of cushion springs 601 and cushion springs 7, the condition that damage is caused by overlarge vibration of the wind driven generator is prevented, the purpose of uniform shock absorption is achieved, and the braking device for the wind driven generator has the advantages of being good in heat dissipation function and good in shock absorption effect.

The above is only the preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, without departing from the concept of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent.

Claims

1. The utility model provides a arresting gear for aerogenerator, includes frame (1), braking shell (2) and damper assembly, its characterized in that:

a generator (101) is arranged in the base (1), one side of the generator (101) is connected with a generating rotating shaft (102), a brake disc (3) is arranged on the outer side of the generating rotating shaft (102), a plurality of brake blocks (301) are rotatably connected to the outer side of the brake disc (3) through rotating shafts, and a brake spring (302) is connected between the brake disc (3) and the brake blocks (301);

the brake device is characterized in that a brake outer shell (2) is fixedly connected to one side of the machine base (1), a brake inner shell (4) is arranged on the inner side of the brake outer shell (2), and a damping assembly is arranged between the brake outer shell (2) and the brake inner shell (4).

2. The braking device for the wind driven generator according to claim 1, wherein the damping assembly comprises a damping lower plate (5), a damping upper plate (6), a buffer spring (601) and a damping spring (7), a plurality of damping lower plates (5) are arranged on the outer side of the brake inner shell (4), a plurality of damping upper plates (6) are arranged on the inner side of the brake outer shell (2), the buffer spring (601) is connected between the plurality of damping upper plates (6) and the damping upper plates (6), and the damping spring (7) is arranged on the outer side of the plurality of damping upper plates (6) and the damping upper plates (6).

3. The braking device for the wind driven generator according to claim 2, wherein the damping lower plate (5), the damping upper plate (6), the buffer springs (601) and the damping springs (7) are uniformly arranged and distributed in an annular equal angle manner between the brake outer shell (2) and the brake inner shell (4).

4. Braking device for wind turbines according to claim 1, characterized in that said plurality of brake pads (301) are provided with a cushion pad (3011) on the outside and a friction ring on the inside of said brake inner housing (4).

5. The braking device for the wind driven generator according to claim 1, wherein a plurality of heat dissipation holes (402) are formed in the surface of the brake inner shell (4), and a plurality of groups of heat dissipation fins (401) are arranged on the outer side of the brake inner shell (4).

6. The braking device for a wind power generator according to claim 1, wherein the power generating rotary shaft (102) penetrates through the inside of the housing (1) and the brake housing (2) and protrudes outside the brake housing (2).