CN217270604U

CN217270604U - Overspeed protection device for wind driven generator

Info

Publication number: CN217270604U
Application number: CN202220819512.0U
Authority: CN
Inventors: 姜子明; 周军; 张淑凤
Original assignee: Inner Mongolia Bozhikai Electric Power Technology Co Ltd
Current assignee: Inner Mongolia Bozhikai Electric Power Technology Co Ltd
Priority date: 2022-04-11
Filing date: 2022-04-11
Publication date: 2022-08-23
Anticipated expiration: 2032-04-11

Abstract

The utility model discloses an overspeed protection device of a wind driven generator, which belongs to the technical field of wind driven generators and comprises a casing, wherein a supporting tower is fixedly arranged at the bottom of the casing, a wheel hub is arranged at one side of the casing, impellers are arranged on the surface of the wheel hub in an annular array manner, and a main shaft is fixedly arranged at one side of the wheel hub; the utility model discloses a setting of speed reduction subassembly, can be when the aerogenerator main shaft overspeed rotation, the rotational speed that the puzzlement slowed down the main shaft through the speed reduction subassembly, and then go on overspeed protection to aerogenerator, prevent that aerogenerator from causing the influence to its normal life because of the operation of speeding, setting through drive assembly, when aerogenerator normally operates, the speed reduction shell is the separation state with the speed reduction inside lining with the speed reduction seat, when the running condition appears speeding in aerogenerator, accessible drive assembly drive speed reduction shell and speed reduction inside lining remove to the position with the laminating of speed reduction seat, with the rotational speed of countershaft speed reduction.

Description

Overspeed protection device for wind driven generator

Technical Field

The utility model relates to a aerogenerator technical field specifically is aerogenerator overspeed protection device.

Background

The wind power generator is an electric device which converts wind energy into mechanical energy and converts the mechanical energy into electric energy, and in a broad sense, the wind power generator is a heat energy utilization engine which takes the sun as a heat source and takes the atmosphere as a working medium, natural energy is utilized for wind power generation, mechanical damage such as vibration and noise are easily formed when the wind power generator runs in an overspeed mode, the service life of a bearing is shortened, mechanical parts are damaged, and the current is too large, so that the motor is overheated, even the motor is burnt, and therefore an overspeed protection device of the wind power generator needs to be provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a aerogenerator hypervelocity protection device possesses and to carry out timely speed reduction to it when aerogenerator hypervelocity is rotated and handles to carry out the advantage of hypervelocity protection to aerogenerator, with the problem of proposing in solving above-mentioned background art.

In order to achieve the purpose, the utility model provides a wind driven generator overspeed protection device, which comprises a housing, wherein a supporting tower is fixedly installed at the bottom of the housing, a wheel hub is arranged at one side of the housing, impellers are installed on the surface of the wheel hub in an annular array manner, a main shaft is fixedly installed at one side of the wheel hub, one end of the main shaft penetrates through the housing and extends to the inner cavity of the housing, a generator is fixedly installed in the inner cavity of the housing, a speed change assembly is arranged between the generator and the main shaft, and a speed reduction assembly is arranged on the surface of the main shaft;

the speed reduction assembly comprises a speed reduction seat fixedly installed on the surface of the main shaft, the surface of the speed reduction seat is connected with a speed reduction shell in a sliding mode, driving assemblies are fixedly installed on the front side and the rear side of the inner cavity of the casing and located on the main shaft, and the speed reduction shell is connected with the inner wall of the casing through the driving assemblies.

Preferably, the speed change assembly comprises a driving gear fixedly mounted at one end of the main shaft, the bottom of the driving gear is engaged with a speed change gear, and one side of the speed change gear is fixedly connected with a rotating shaft of the generator.

Preferably, the driving assembly comprises bases fixedly installed on the front side and the rear side of an inner cavity of the casing, an electric telescopic rod is fixedly installed on one side of each base, a connecting plate is fixedly installed at the telescopic end of each electric telescopic rod, and one side of each connecting plate is fixedly connected with the surface of the speed reducing casing.

Preferably, the inner cavity fixed mounting of speed reduction shell has the lining that slows down, the lining that slows down keeps away from one side of speed reduction shell and the surperficial laminating of speed reduction seat.

Preferably, the bottom of casing articulates there is the access door, the fixed surface of access door installs locking Assembly, the access door passes through locking Assembly and is in the same place with the surperficial locking of casing.

Preferably, the locking assembly comprises a locking plate fixedly installed on the surface of the access door, the surface of the locking plate is in threaded connection with a locking rod, and one end of the locking rod penetrates through the locking plate and extends to the outside of the locking plate to be in threaded connection with the surface of the casing.

Preferably, a supporting groove is formed in one side of the casing, and the surface of the main shaft is rotatably connected with the inner wall of the supporting groove.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a setting of speed reduction subassembly, can be when aerogenerator main shaft overspeed rotation, puzzlement slows down the slew velocity of main shaft through the speed reduction subassembly, and then carry out overspeed protection to aerogenerator, prevent that aerogenerator from causing the influence to its normal life because of overspeed operation, through the setting of drive assembly, when aerogenerator normally operates, speed reduction shell and speed reduction inside lining and speed reduction seat are separation state, when aerogenerator appears overspeed operation condition, accessible drive assembly drive speed reduction shell and speed reduction inside lining move to the position of laminating with the speed reduction seat, with the rotational speed of countershaft speed reduction;

2. the utility model discloses a setting of speed change subassembly, drive gear's diameter is greater than speed change gear's diameter, and drive gear rotates the round and can drive speed change gear and rotate many rings, and then realizes promoting the generator and carry out the efficiency that the electric energy converted, can the person of facilitating the use overhaul the maintenance to the structure of casing inside through setting up of access door, can be in the same place access door and casing locking fixation through setting up of locking Assembly.

Drawings

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

fig. 2 is a schematic structural view of the locking assembly of the present invention;

fig. 3 is a schematic structural view of the speed reduction assembly of the present invention;

fig. 4 is a schematic structural diagram of the transmission assembly of the present invention.

In the figure: 1. a housing; 2. a support tower; 3. a hub; 4. an impeller; 5. a main shaft; 6. a generator; 7. a deceleration seat; 8. a speed reduction housing; 9. a drive gear; 10. a speed change gear; 11. a base; 12. an electric telescopic rod; 13. a connecting plate; 14. a deceleration lining; 15. an access door; 16. a locking plate; 17. a locking lever; 18. and a support groove.

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 utility model provides a wind driven generator overspeed protection device, including casing 1, the bottom fixed mounting of casing 1 has support tower 2, one side of casing 1 is equipped with wheel hub 3, wheel hub 3's surperficial annular array installs impeller 4, the bottom of casing 1 is articulated to have access door 15, access door 15's fixed surface installs locking assembly, access door 15 is together fixed with the surface locking of casing 1 through locking assembly, locking assembly includes locking plate 16 fixedly mounted in access door 15 surface, the surface threaded connection of locking plate 16 has check lock lever 17, the one end of check lock lever 17 runs through locking plate 16 and extends to the outside of locking plate 16 and the surface threaded connection of casing 1;

the arrangement of the access door 15 can facilitate a user to overhaul and maintain the structure inside the machine shell 1, the arrangement of the locking assembly can lock and fix the access door 15 and the machine shell 1 together, the user can screw down the locking rod 17 after closing the access door 15, and the rotation of the locking rod 17 enables one end of the locking rod 17 to penetrate through the locking plate 16 and extend to the outside of the locking plate 16 to be connected with the surface thread of the machine shell 1, so that the access door 15 and the machine shell 1 are locked and fixed together;

it is worth to say that, a main shaft 5 is fixedly mounted on one side of the hub 3, a supporting groove 18 is formed on one side of the casing 1, the surface of the main shaft 5 is rotatably connected with the inner wall of the supporting groove 18, one end of the main shaft 5 penetrates through the casing 1 and extends to the inner cavity of the casing 1, a generator 6 is fixedly mounted in the inner cavity of the casing 1, a speed change assembly is arranged between the generator 6 and the main shaft 5, the speed change assembly comprises a driving gear 9 fixedly mounted at one end of the main shaft 5, a speed change gear 10 is meshed with the bottom of the driving gear 9, and one side of the speed change gear 10 is fixedly connected with a rotating shaft of the generator 6;

through the arrangement of the speed change component, the impeller 4 starts to rotate under the action of wind blowing, the rotation of the impeller 4 drives the main shaft 5 to rotate through the hub 3, the rotation of the main shaft 5 drives the driving gear 9 to rotate, in the embodiment, the diameter of the driving gear 9 is larger than that of the speed change gear 10, the driving gear 9 rotates for a circle to drive the speed change gear 10 to rotate for multiple circles, the rotation of the main shaft 5 drives the speed change gear 10 to rotate through the driving gear 9, the rotation of the speed change gear 10 drives the rotating shaft of the generator 6 to rotate, so that wind energy is converted into electric energy through the generator 6, through the arrangement of the supporting groove 18, an installation space can be provided for the main shaft 5, and when the main shaft 5 rotates, the surface of the main shaft is rotationally connected with the inner wall of the supporting groove 18;

preferably, a speed reduction assembly is arranged on the surface of the main shaft 5, the speed reduction assembly comprises a speed reduction seat 7 fixedly mounted on the surface of the main shaft 5, a speed reduction shell 8 is slidably connected to the surface of the speed reduction seat 7, a speed reduction lining 14 is fixedly mounted in an inner cavity of the speed reduction shell 8, one side, far away from the speed reduction shell 8, of the speed reduction lining 14 is attached to the surface of the speed reduction seat 7, driving assemblies are fixedly mounted in the inner cavity of the machine shell 1 and positioned on the front side and the rear side of the main shaft 5, the speed reduction shell 8 is connected with the inner wall of the machine shell 1 through the driving assemblies, each driving assembly comprises a base 11 fixedly mounted on the front side and the rear side of the inner cavity of the machine shell 1, an electric telescopic rod 12 is fixedly mounted on one side of each base 11, a connecting plate 13 is fixedly mounted on the telescopic end of the electric telescopic rod 12, and one side of the connecting plate 13 is fixedly connected with the surface of the speed reduction shell 8;

through the setting of speed reduction subassembly, when aerogenerator overspeed operation, electric telescopic handle 12 is opened to user's accessible external control ware, electric telescopic handle 12's flexible end drives connecting plate 13 and removes, connecting plate 13's removal drives the removal of speed reduction inside lining 14 through speed reduction shell 8, make speed reduction shell 8 and speed reduction inside lining 14 remove to the position with the laminating of speed reduction seat 7, carry out speed reduction processing to main shaft 5 with the frictional action of speed reduction seat 7 through speed reduction inside lining 14, and then reduce aerogenerator's rotational speed, overspeed protection is carried out to it, setting up through base 11 can play the fixed effect of support to electric telescopic handle 12, fix its installation in the inner chamber of casing 1.

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. Aerogenerator overspeed protection device, including casing (1), the bottom fixed mounting of casing (1) has support tower (2), one side of casing (1) is equipped with wheel hub (3), impeller (4), its characterized in that are installed to the surperficial annular array of wheel hub (3): a main shaft (5) is fixedly mounted on one side of the hub (3), one end of the main shaft (5) penetrates through the casing (1) and extends to the inner cavity of the casing (1), a generator (6) is fixedly mounted in the inner cavity of the casing (1), a speed change assembly is arranged between the generator (6) and the main shaft (5), and a speed reduction assembly is arranged on the surface of the main shaft (5);

the speed reduction assembly comprises a speed reduction seat (7) fixedly installed on the surface of the main shaft (5), a speed reduction shell (8) is connected to the surface of the speed reduction seat (7) in a sliding mode, a driving assembly is fixedly installed on the front side and the rear side of the inner cavity of the casing (1) and located on the main shaft (5), and the speed reduction shell (8) is connected with the inner wall of the casing (1) through the driving assembly.

2. Wind turbine overspeed protection device according to claim 1, characterized in that: the speed change assembly comprises a driving gear (9) fixedly installed at one end of the main shaft (5), a speed change gear (10) is meshed at the bottom of the driving gear (9), and one side of the speed change gear (10) is fixedly connected with a rotating shaft of the generator (6).

3. Wind turbine overspeed protection device according to claim 2, characterized in that: the driving assembly comprises bases (11) fixedly installed on the front side and the rear side of an inner cavity of the machine shell (1), an electric telescopic rod (12) is fixedly installed on one side of each base (11), a connecting plate (13) is fixedly installed at the telescopic end of each electric telescopic rod (12), and one side of each connecting plate (13) is fixedly connected with the surface of the speed reducing shell (8).

4. Wind turbine overspeed protection apparatus according to claim 3, characterized in that: the inner chamber fixed mounting of speed reduction shell (8) has speed reduction inside lining (14), speed reduction inside lining (14) are kept away from the surface laminating of one side and the speed reduction seat (7) of speed reduction shell (8).

5. Wind turbine overspeed protection apparatus according to claim 1, characterized in that: the bottom of casing (1) articulates there is access door (15), the fixed surface of access door (15) installs locking Assembly, access door (15) are together fixed through locking Assembly and casing (1) surface locking.

6. Wind turbine overspeed protection device according to claim 5, characterized in that: the locking assembly comprises a locking plate (16) fixedly installed on the surface of the access door (15), a locking rod (17) is connected to the surface of the locking plate (16) in a threaded mode, and one end of the locking rod (17) penetrates through the locking plate (16) and extends to the outside of the locking plate (16) to be connected with the surface of the shell (1) in a threaded mode.

7. Wind turbine overspeed protection device according to claim 1, characterized in that: a supporting groove (18) is formed in one side of the machine shell (1), and the surface of the main shaft (5) is rotatably connected with the inner wall of the supporting groove (18).