CN213981043U

CN213981043U - Speed limiting device of wind driven generator

Info

Publication number: CN213981043U
Application number: CN202022419132.1U
Authority: CN
Inventors: 屈平选; 李春锋; 刘瀚; 姜辉; 杨绪硕; 石磊
Original assignee: Shuifa Fengyuan Energy Co ltd
Current assignee: Shuifa Fengyuan Energy Co ltd
Priority date: 2020-10-27
Filing date: 2020-10-27
Publication date: 2021-08-17
Anticipated expiration: 2030-10-27

Abstract

The utility model discloses a wind driven generator speed limiting device, which comprises a pair of speed limiting boxes, wherein a pair of fixing frames are fixedly arranged on the inner top surface of each speed limiting box, the ends of the pair of fixing frames are fixedly connected with bearings, the inner part of the inner ring of each bearing is fixedly connected with a raised fluted disc, the inner part and the outer part of each raised fluted disc are respectively provided with teeth, the teeth on the outer part of each raised fluted disc are positioned outside the teeth on the inner part of each raised fluted disc, and the two side surfaces of each speed limiting box are respectively provided with a through hole. The risk of overload operation of the generator can be effectively avoided.

Description

Speed limiting device of wind driven generator

Technical Field

The utility model relates to a wind power generation technical field specifically is a aerogenerator speed limiting device.

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 wind wheels, a generator (including a device), a direction regulator (empennage), a tower, a speed-limiting safety mechanism, an energy storage device and other components. The wind driven generator has simple working principle, the wind wheel rotates under the action of wind force, the kinetic energy of the wind is converted into mechanical energy of a wind wheel shaft, and the generator rotates under the drive of the wind wheel shaft to generate electricity. In a broad sense, wind energy is also solar energy, so that the wind power generator is a heat energy utilization generator which uses solar energy as a heat source and uses the atmosphere as a working medium.

Due to the fact that the earth environment is worse and worse in recent years, the frequency of typhoon is higher and higher, when the typhoon comes, the rotating speed of blades of the wind driven generator is increased rapidly, due to the fact that the power of the generator is limited, the generator is damaged due to overload operation directly due to the overhigh rotating speed, and at the moment, a wind driven generator speed limiting device is needed to solve the problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a aerogenerator speed limiting device to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a wind driven generator speed limiting device comprises a pair of speed limiting boxes, a pair of fixing frames are fixedly mounted on the inner top surface of each speed limiting box, bearings are fixedly connected to the ends of the pair of fixing frames, protruding fluted discs are fixedly connected to the inner portions of inner rings of the bearings, teeth are arranged inside and outside the protruding fluted discs, the teeth outside the protruding fluted discs are located outside the teeth inside the protruding fluted discs, through holes are formed in the two side surfaces of each speed limiting box, transmission shafts penetrate through the protruding fluted discs and are fixedly mounted at one ends of the transmission shafts, generators are fixedly connected to the other ends of the transmission shafts, transmission boxes are fixedly mounted on the surfaces of the transmission shafts and located inside the protruding fluted discs, a pair of springs are symmetrically and fixedly mounted on the surfaces of the transmission shafts and located inside the transmission boxes, and contact blocks are fixedly connected to the ends of the springs, a pair of contact piece all runs through in the transmission box, protruding fluted disc outside tooth surface meshing is connected with first drive gear, first drive gear both ends link to each other through pivot and speed limit case both sides inner wall, bottom fixed mounting has the weight box in the speed limit case, the inside both sides of weight box are through pivot fixedly connected with second drive gear, square groove has been seted up to the weight box top surface, second drive gear runs through in the weight box through square groove and links to each other with first drive gear surface meshing. And the surface of the second transmission gear is engaged with a counterweight plate, and two ends of the counterweight plate are connected with the inner wall of the counterweight box through rotating shafts.

In a further embodiment, the two sides of the speed limiting box are symmetrically provided with fixing blocks, and the top surfaces of the pair of fixing blocks are symmetrically provided with a pair of threaded holes.

In a further embodiment, two sides of the speed limiting box are symmetrically provided with observation ports.

In a further embodiment, the contact block is made of steel, and the end of the contact block is provided with teeth matched with the inner teeth of the raised fluted disc.

In a further embodiment, the weight plate is made of solid heavy material.

In a further embodiment, a screen plate is fixedly connected to one side of the viewing port through a hinge.

Compared with the prior art, the beneficial effects of the utility model are that: the blade of the wind driven generator is rotated to drive the transmission shaft to rotate, the transmission shaft drives the generator to work, thereby generating electricity, when wind power is overlarge, the transmission shaft can accelerate the rotating speed, the contact block can move towards the outside of the transmission box under the action of centripetal force, when the end of the contact block is contacted with teeth inside the raised fluted disc, the raised fluted disc can be directly driven to rotate, thereby the balance weight disc is driven to rotate through the first transmission gear and the second transmission gear, the surplus kinetic energy of the transmission shaft is consumed, when the wind power is normal, the centripetal force is not enough to throw the contact block outwards, the spring can pull the contact block to be separated from the raised fluted disc, thereby the balance weight disc stops rotating, the design can carry out speed limiting treatment on the wind driven generator without any artificial interference, and the risk of overload operation of the generator can be effectively avoided.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the structure of the convex fluted disc of the present invention;

FIG. 3 is a cross-sectional view of the transmission case of the present invention;

fig. 4 is a sectional view of the speed limiting box of the present invention.

In the figure: 1. a speed limiting box; 2. a through hole; 3. a drive shaft; 4. a screen plate; 5. a fixed block; 6. a threaded hole; 7. a viewing port; 8. a convex fluted disc; 9. a contact block; 10. a transmission box; 11. a spring; 12. a bearing; 13. a fixed mount; 14. a first drive gear; 15. a square groove; 16. a weight box; 17. a weight plate; 18. a second transmission gear.

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.

Referring to fig. 1-4, the present invention provides a technical solution: a wind driven generator speed limiting device comprises a pair of speed limiting boxes 1, a pair of fixing frames 13 are fixedly installed on the inner top surface of each speed limiting box 1, the ends of the fixing frames 13 are fixedly connected with bearings 12, raised fluted discs 8 are fixedly connected inside inner rings of the bearings 12, teeth are arranged inside and outside the raised fluted discs 8 respectively, the teeth outside the raised fluted discs 8 are positioned outside the teeth inside the raised fluted discs 8, through holes 2 are formed on two side surfaces of each speed limiting box 1, transmission shafts 3 penetrate through the raised fluted discs 8 inside the through holes 2, rotating blades are fixedly installed at one ends of the transmission shafts 3, a generator is fixedly connected at the other ends of the transmission shafts 3, a transmission box 10 is fixedly installed on the surface of each transmission shaft 3 and inside the raised fluted discs 8, a pair of springs 11 are symmetrically and fixedly installed on the surface of each transmission shaft 3 and inside the transmission box 10, and contact blocks 9 are fixedly connected at the ends of the springs 11, a pair of contact blocks 9 all run through in transmission box 10, protruding 8 outside tooth surface meshes of fluted disc is connected with first drive gear 14, first drive gear 14 both ends link to each other through pivot and speed limit case 1 both sides inner wall, bottom surface fixed mounting has weight box 16 in the

speed limit case

1, 16 inside both sides of weight box are through pivot fixedly connected with second drive gear 18, square groove 15 has been seted up to weight box 16 top surface, second drive gear 18 runs through in weight box 16 through square groove 15 and links to each other with the meshing of first drive gear 14 surface. The surface of the second transmission gear 18 is engaged with a counterweight plate 17, and two ends of the counterweight plate 17 are connected with the inner wall of the counterweight box 16 through a rotating shaft.

In one embodiment, the speed limiting box 1 is symmetrically provided with fixing blocks 5 at two sides, and a pair of threaded holes 6 are symmetrically formed in the top surfaces of the pair of fixing blocks 5.

By adopting the above case, the device and the wind driven generator can be firmly fixed together by screws through the threaded holes 6 on the fixing block 5, so that the sliding of the device caused by the vibration generated by the speed limiting box 1 during working is avoided.

In one embodiment, two sides of the speed-limiting box 1 are symmetrically provided with observation ports 7.

By adopting the above case, the condition in the speed limiting box 1 can be constantly monitored through the observation ports 7, and the auxiliary heat dissipation effect can be achieved for the speed limiting box 1 through the pair of observation ports 7.

In one embodiment, the contact block 9 is made of steel, and the end of the contact block 9 is provided with teeth matched with the inner teeth of the raised fluted disc 8.

By adopting the above case, the end of the contact block 9 can firmly support against the inner teeth of the convex fluted disc 8, and the slipping phenomenon is avoided.

In one embodiment, the weight plate 17 is made of a solid heavy material.

By adopting the case, the rotating speed of the transmission shaft 3 can be effectively reduced at a constant speed.

In one embodiment, screen panel 4 is fixedly attached to one side of viewing port 7 by a hinge.

By adopting the case, the flying bird insect and the like can be effectively prevented from entering the speed limiting box 1 by mistake, and the damage to internal parts is avoided.

The working principle is as follows: before the utility model is used, the screw is used for fixing the device on the wind driven generator through the threaded hole 6 on the fixed block 5, the transmission shaft 3 is driven to rotate through the rotation of the fan, the generator is driven to operate by the transmission shaft 3, thereby generating electricity, when the wind power is too large, the blade of the wind driven generator can accelerate the rotating speed therewith, thereby increasing the rotating speed of the transmission shaft 3, when the rotating speed of the transmission shaft 3 is too large, the transmission box 10 can be driven to rotate at a high speed, because the centripetal force can lead the contact block 9 to move towards the outside of the transmission box 10, along with the continuous outward movement of the contact block 9, when the end head is contacted with the teeth inside the raised fluted disc 8, the raised fluted disc 8 can be directly driven to rotate, because the teeth outside the raised fluted disc 8 are meshed with the first transmission gear 14, the surface of the first transmission gear 14 is meshed with the second transmission gear 18, the surface of the second transmission gear 18 is meshed with the counterweight disc 17, therefore, the first transmission gear 14, the second transmission gear 18 and the counterweight plate 17 can rotate along with the first transmission gear, the counterweight plate 17 is made of heavy metal, the mass of the counterweight plate 17 is large, and a large amount of kinetic energy is consumed for driving the counterweight plate to rotate, so that the rotating speed of the transmission shaft 3 can be effectively reduced, the rotating speed of the transmission shaft 3 cannot be suddenly reduced, and when wind power is normal, the contact block 9 is pulled to be separated from the protruding fluted disc 8 through the resilience of the spring 11, so that the counterweight plate 17 can stop rotating.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a aerogenerator speed limiting device, includes a pair of speed limit case (1), its characterized in that: the speed limiting box is characterized in that a pair of fixing frames (13) are fixedly mounted on the inner top surface of the speed limiting box (1), bearings (12) are fixedly connected to the ends of the fixing frames (13), protruding fluted discs (8) are fixedly connected to the inner portions of the inner rings of the bearings (12), teeth are arranged inside and outside the protruding fluted discs (8), the external teeth of the protruding fluted discs (8) are located on the outer sides of the internal teeth of the protruding fluted discs (8), through holes (2) are formed in both side surfaces of the speed limiting box (1), transmission shafts (3) penetrate through the pair of through holes (2), the transmission shafts (3) penetrate through the protruding fluted discs (8), rotating blades are fixedly mounted at one ends of the transmission shafts (3), a generator is fixedly connected to the other ends of the transmission shafts (3), and transmission boxes (10) are fixedly mounted on the surfaces of the transmission shafts (3) and located inside the protruding fluted discs (8), a pair of springs (11) are symmetrically and fixedly arranged on the surface of the transmission shaft (3) and positioned in the transmission box (10), the ends of the pair of springs (11) are fixedly connected with contact blocks (9), the pair of contact blocks (9) penetrate through the transmission box (10), the surface of the external teeth of the raised fluted disc (8) is engaged and connected with a first transmission gear (14), two ends of the first transmission gear (14) are connected with the inner walls of two sides of the speed limiting box (1) through rotating shafts, a weight box (16) is fixedly arranged on the inner bottom surface of the speed limiting box (1), second transmission gears (18) are fixedly connected with two sides of the inner part of the weight box (16) through rotating shafts, the top surface of the weight box (16) is provided with a square groove (15), and the second transmission gear (18) penetrates through the weight box (16) through the square groove (15) and is connected with the surface of the first transmission gear (14) in a meshed mode.

2. The wind driven generator speed limiting device according to claim 1, wherein: and the surface of the second transmission gear (18) is engaged and connected with a counterweight plate (17), and two ends of the counterweight plate (17) are connected with the inner wall of the counterweight box (16) through a rotating shaft.

3. The wind driven generator speed limiting device according to claim 1, wherein: the speed limiting box is characterized in that fixed blocks (5) are symmetrically arranged on two sides of the speed limiting box (1), and a pair of threaded holes (6) are symmetrically formed in the top surfaces of the fixed blocks (5).

4. The wind driven generator speed limiting device according to claim 1, wherein: and observation ports (7) are symmetrically formed in two sides of the speed limiting box (1).

5. The wind driven generator speed limiting device according to claim 1, wherein: the contact block (9) is made of steel, and teeth matched with the inner teeth of the raised fluted disc (8) are arranged at the end of the contact block (9).

6. The wind driven generator speed limiting device according to claim 2, wherein: the counterweight plate (17) is made of solid heavy materials.

7. The wind driven generator speed limiting device according to claim 4, wherein: one side of the observation opening (7) is fixedly connected with a screen plate (4) through a hinge.