CN216642997U - Transmission device and wind generating set - Google Patents
Transmission device and wind generating set Download PDFInfo
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- CN216642997U CN216642997U CN202122689766.3U CN202122689766U CN216642997U CN 216642997 U CN216642997 U CN 216642997U CN 202122689766 U CN202122689766 U CN 202122689766U CN 216642997 U CN216642997 U CN 216642997U
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- transmission
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Abstract
The utility model relates to the technical field of wind power generation equipment, and provides a transmission device and a wind power generator set. The flexible transmission assembly is used for replacing an output shaft of the coupling transmission connection gear box and an input shaft of the generator, the speed and the torque are transmitted through the flexible transmission assembly, strict centering operation is not needed during assembly, the disassembly and the maintenance are simple and convenient, the axial distance of a transmission chain and the size of a cabin of the wind generating set can be shortened, and the cost is saved.
Description
Technical Field
The utility model relates to the technical field of wind power generation equipment, in particular to a transmission device and a wind generating set.
Background
The wind energy is a clean environment-friendly renewable resource, the technology of wind energy power generation is mature compared with new energy power generation such as solar energy, geothermal energy, ocean energy, hydrogen energy, combustible ice and the like, and the wind energy power generation does not generate carbon emission at all, thereby being the most ideal green energy in the present generation.
The wind driven generator is a wind energy power machine. Wind acts on the blades at a certain speed and an attack angle to enable the blades to generate a rotating moment, wind energy is converted into mechanical energy through components such as a low-speed shaft, a speed increasing box and a high-speed shaft, and finally the mechanical energy drives a high-speed generator to generate electricity, and the electricity is supplied to off-grid users and can also be fed into a power grid through an inverter.
At present, a gear box and a generator of a transmission device of a wind generating set are mostly connected by a diaphragm coupling, and the structure of the transmission device comprises a gear box side expansion sleeve, a generator side expansion sleeve, a brake disc, a diaphragm group and an intermediate cylinder. The output shaft of the gearbox and the input shaft of the generator of the existing transmission device always cause position deviation due to error accumulation and deformation of elastic support, so that strict centering operation is always required before the coupler is installed, and the working hours and manpower are increased; and the axial distance of the transmission device is increased due to the fact that the middle cylinder of the coupler is large in volume.
SUMMERY OF THE UTILITY MODEL
The utility model provides a transmission device and a wind generating set, which are used for solving the problems that in the prior art, a gear box of the transmission device of the wind generating set is connected with a generator through a coupler, strict centering operation is required before the coupler is installed, and the working hours and manpower are increased; and because the volume of the middle cylinder of the coupler is large, the defect of increasing the axial distance of the transmission device is overcome, the flexible transmission assembly is used for replacing the output shaft of the coupler transmission connection gear box and the input shaft of the generator, the speed and the torque are transmitted through the flexible transmission assembly, strict centering operation is not needed during assembly, the disassembly and the maintenance are simple and convenient, the axial distance of the transmission device and the volume of the cabin of the wind generating set can be shortened, and the cost is saved.
The utility model provides a transmission device which comprises a gearbox and a generator, wherein an output shaft of the gearbox is in transmission connection with an input shaft of the generator through a flexible transmission assembly.
According to the present invention there is provided a transmission, the flexible drive assembly comprising:
the driving belt wheel is arranged on an output shaft of the gear box;
a driven pulley provided on an input shaft of the generator;
and the transmission belt is used for connecting the driving belt wheel and the driven belt wheel in a transmission way.
According to the transmission device provided by the utility model, the driving pulley and the driven pulley respectively comprise a groove for embedding the transmission belt, and the width of the groove is gradually reduced along the direction from the outer periphery of the driving pulley or the driven pulley to the axis.
According to the present invention, there is provided a transmission, the driving pulley and/or the driven pulley further comprising:
a first conical disc for coaxial connection with an output shaft of the gearbox or an input shaft of the generator;
a second conical disk disposed opposite the first conical disk, a gap between the first conical disk and the second conical disk forming the groove;
a groove width adjusting device for driving the first conical disk and the second conical disk to approach or separate from each other to adjust a width of the groove.
According to the transmission device provided by the utility model, the first conical disc of the driving belt wheel is fixedly connected with the output shaft of the gear box, and the second conical disc of the driving belt wheel is in sliding connection with the output shaft of the gear box;
the first conical disc of the driven belt wheel is fixedly connected with the input shaft of the generator, and the second conical disc of the driven belt wheel is connected with the input shaft of the generator in a sliding mode.
According to the present invention, there is provided a transmission, wherein the groove width adjusting device comprises:
the telescopic piece is used for driving the second conical disc to be close to or far away from the first conical disc;
and the control system is used for controlling the telescopic piece to stretch and contract.
According to the transmission device provided by the utility model, the transmission belt is a V-shaped metal belt.
According to the transmission device provided by the utility model, the telescopic piece is an oil cylinder, and the driving end of the oil cylinder is connected with the second conical disc.
According to the present invention there is provided a transmission, the flexible drive assembly comprising:
the driving gear is arranged on an output shaft of the gear box;
a driven gear provided on an input shaft of the generator;
and the transmission chain is meshed with the driving gear and the driven gear and is used for connecting the driving gear and the driven gear in a transmission way.
The utility model also provides a wind generating set, which comprises a transmission device, wherein the transmission device is the transmission device as in any one of the above items.
The utility model provides a transmission device and a wind generating set, which comprise a gear box and a generator, wherein an output shaft of the gear box is in transmission connection with an input shaft of the generator through a flexible transmission assembly. The flexible transmission assembly is used for replacing the output shaft of the coupling transmission connection gearbox and the input shaft of the generator, the speed and the torque are transmitted through the flexible transmission assembly, strict centering operation is not needed during assembly, and the assembly, disassembly and maintenance are simple and convenient. And moreover, the flexible assembly is connected with the gear box and the generator, so that the axial length of the whole transmission chain (transmission device) can be shortened, the size of the cabin of the wind generating set is reduced, and the cost is reduced.
The driving pulley and the driven pulley respectively comprise a first conical disc, a second conical disc and a groove width adjusting device, the first conical disc is used for being coaxially connected with an output shaft of the gearbox or an input shaft of the generator, the second conical disc is arranged opposite to the first conical disc, a groove is formed in a gap between the first conical disc and the second conical disc, the groove width adjusting device is used for driving the first conical disc and the second conical disc to be close to or away from each other so as to adjust the width of the groove, the diameter of a part of the driving pulley and the driven pulley, which support the transmission belt, is adjusted, the transmission ratio of the flexible transmission assembly is changed, the input rotating speed of the generator is changed, the rotating speed change of the generator can be relatively stable, and the service life of the generator is prolonged.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic structural view of a transmission provided by the present invention;
FIG. 2 is a schematic structural diagram of a driving pulley provided in the present invention;
fig. 3 is a schematic structural view of the driven pulley provided by the present invention.
1: a gear case; 2: a generator; 3: an output shaft;
4: an input shaft; 5: a driving pulley; 6: a driven pulley;
7: a brake disc; 8: a trench; 9: an oil cylinder;
10: a hydraulic control system; 11: a first conical disk; 12: a second conical disk;
13: a transmission belt.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. 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 invention.
The transmission and the wind turbine generator set according to the present invention will be described with reference to fig. 1 to 3.
As shown in figure 1, the transmission device provided by the utility model comprises a gear box 1 and a generator 2, wherein an output shaft 3 of the gear box 1 is in transmission connection with an input shaft 4 of the generator 2 through a flexible transmission assembly, so that strict centering operation is not required during assembly.
It should be noted that the axial direction may be the axial direction of the transmission. The flexible transmission is usually made up of two or more transmission wheels and an intermediate endless flexible member by means of which motion and power are transmitted between the transmission wheels, so that the output shaft 3 of the gearbox 1 and the input shaft 4 of the generator 2 are arranged in parallel.
According to the arrangement, the flexible transmission assembly is used for replacing the output shaft 3 of the coupling transmission connection gear box 1 and the input shaft 4 of the generator 2, the speed and the torque are transmitted through the flexible transmission assembly, strict centering operation is not needed during assembly, the disassembly and the maintenance are simple and convenient, the axial length of a transmission chain can be shortened, the size of a cabin of the wind generating set is reduced, and the cost is saved.
In an alternative embodiment of the present invention, the flexible transmission assembly comprises a driving pulley 5, a driven pulley 6 and a transmission belt, wherein the driving pulley 5 is disposed on the output shaft 3 of the gear box 1, the driven pulley 6 is disposed on the input shaft 4 of the generator 2, and the transmission belt is sleeved outside the driving pulley 5 and the driven pulley 6 for connecting the driving pulley 5 and the driven pulley 6 in a transmission manner. In this way, speed and torque can be transmitted through the drive belt, and the drive connection of the gearbox 1 and the generator 2 is realized.
The driving pulley 5 is coaxially connected to the output shaft 3 of the gear box 1, and the driven pulley 6 is coaxially connected to the input shaft 4 of the generator 2, so that the driving pulley 5 and the driven pulley 6 are drivingly connected by a transmission belt. By the arrangement, the output shaft 3 of the gear box 1 and the input shaft 4 of the generator 2 are partially overlapped in the axial direction, so that the axial distance of the transmission device is shortened, the volume of a cabin of the wind generating set is reduced, and the cost is reduced.
In particular, the driven pulley 6 may be located below the driving pulley 5 and the generator 2 may be placed on the central axis of the chassis to even the mass distribution of the transmission, with a center of mass.
In other embodiments, the flexible transmission assembly may comprise a driving gear disposed on the output shaft 3 of the gearbox 1, a driven gear disposed on the input shaft 4 of the generator 2, and a transmission chain engaged with the driving gear and the driven gear to enable the driving gear and the driven gear to be drivingly connected, thereby enabling the transmission connection of the gearbox 1 and the generator 2.
In an alternative embodiment of the utility model, the driving pulley 5 and the driven pulley 6 each comprise a groove 8, the grooves 8 being used for the insertion of the drive belt, facilitating the connection of the drive belt with the driving pulley 5 and the driven pulley 6.
Further, the width of the groove 8 is gradually reduced in the direction from the outer periphery of the driving pulley 5 or the driven pulley 6 to the axial center, that is, the groove 8 may be a V-groove.
In the present embodiment, as shown in fig. 2 and 3, each of the driving pulley 5 and the driven pulley 6 further includes a first tapered disk 11, a second tapered disk 12, and a groove width adjusting device.
In particular, the first conical disk 11 is intended for coaxial connection with the output shaft 3 of the gearbox 1 or the input shaft 4 of the generator 2, the second conical disk 12 is arranged opposite the first conical disk 11, and the gap between the first conical disk 11 and the second conical disk 12 forms the groove 8, i.e. the drive belt can be fitted over the first conical disk 11 and the second conical disk 12 and rotates with the rotation of the first conical disk 11 and/or the second conical disk 12.
It should be noted that the second conical disk 12 may be disposed opposite to the first conical disk 11, and the first conical disk 11 and the second conical disk 12 may be disposed coaxially, and the conical points (i.e., the vertexes of the cones) of the two disks are close to or in contact with each other.
The groove width adjusting device is used for driving the first conical disc 11 and the second conical disc 12 to move close to or away from each other so as to adjust the width of the groove 8, thereby adjusting the diameters of the parts of the driving pulley 5 and the driven pulley 6 supporting the transmission belt, changing the transmission ratio of the flexible transmission assembly, and changing the input rotating speed of the generator 2, so that the rotating speed change of the generator 2 can be relatively stable, and the service life of the generator 2 can be prolonged.
In order to ensure that the length of the belt does not change, in the portion of the belt supported by the driving pulley 5 and the driven pulley 6, when the diameter of one of them is smaller, the diameter of the other is larger, that is, when the width of one of the grooves 8 of the driving pulley 5 and the grooves 8 of the driven pulley 6 is larger, the width of the other is smaller. For example, when the width of the groove 8 of the driving pulley 5 becomes larger, the diameter of the portion of the driving pulley 5 supporting the transmission belt becomes smaller, and at this time, the width of the groove 8 of the driven pulley 6 becomes smaller, and the diameter of the portion of the driven pulley 6 supporting the transmission belt becomes larger; conversely, when the width of the groove 8 of the driving pulley 5 is smaller, the diameter of the portion of the driving pulley 5 supporting the transmission belt becomes larger, and at this time, the width of the groove 8 of the driven pulley 6 becomes larger, and the diameter of the portion of the driven pulley 6 supporting the transmission belt becomes smaller.
So set up, can enough change transmission's drive ratio, can guarantee again that the length of drive belt can not change, make the drive belt be in the tensioning state constantly to guarantee that the drive belt is connected with drive pulley 5 and the transmission of driven pulley 6.
In the embodiment, the first conical disc 11 of the driving pulley 5 is fixedly connected with the output shaft 3 of the gear box 1, and the second conical disc 12 of the driving pulley 5 is slidably connected with the output shaft 3 of the gear box 1; the first conical disc 11 of the driven pulley 6 is fixedly connected with the input shaft 4 of the generator 2, and the second conical disc 12 of the driven pulley 6 is slidably connected with the input shaft 4 of the generator 2. In this way, the groove width adjusting means is facilitated to adjust the width of the grooves 8 of the driving pulley 5 and the driven pulley 6.
The groove width adjusting device comprises an expansion piece and a control system, wherein the expansion end of the expansion piece can be connected with the second conical disc 12 to drive the second conical disc 12 to be close to or far away from the first conical disc 11, and the control system is used for controlling the expansion piece to expand and contract.
In particular, the telescopic member may be a cylinder 9, and the control system may be a hydraulic control system 10, the hydraulic control system 10 being capable of supplying oil to the cylinder 9 so that the cylinder 9 controls the movement of the second conical disc 12.
In an alternative embodiment the drive belt may be a V-shaped metal belt and the groove 8 between the first conical disk 11 and the second conical disk 12 engages with the V-shaped metal belt.
When the oil cylinder 9 of the driving pulley 5 controls the second conical disc 12 of the driving pulley 5 to move along the axial direction of the output shaft 3 of the gearbox 1, the V-shaped metal belt on the side of the driving pulley 5 moves along with the second conical disc 12, the length of the V-shaped metal belt is fixed, therefore, the V-shaped metal belt on the side of the driven pulley 6 moves along the groove 8 in the opposite direction, and the oil cylinder 9 of the driven pulley 6 controls the second conical disc 12 of the driven pulley 6 to move along the axial direction at this time, so that the tension of the V-shaped metal belt is maintained, and the power from the gearbox 1 is guaranteed to be transmitted efficiently and reliably. When the V-shaped metal belt moves along the direction of the groove 8, the turning radius of the V-shaped metal belt on the driving belt wheel 5 and the driven belt wheel 6 is changed, so that the connection change of the transmission ratio is realized.
In an alternative embodiment of the utility model, a brake disc 7 is arranged on the output shaft 3 of the gearbox 1 for stopping and braking.
The following describes a wind turbine generator system provided by the present invention, and the wind turbine generator system described below and the transmission device described above can be referred to correspondingly.
The utility model provides a wind generating set, which comprises a transmission device, wherein the transmission device can be the transmission device in any embodiment, and the beneficial effects of the wind generating set are consistent with the beneficial effects of the transmission device improved by the utility model, so that the details are not repeated.
The above-described embodiments of the apparatus are merely illustrative, and some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (8)
1. A transmission device is characterized by comprising a gearbox and a generator, wherein an output shaft of the gearbox and an input shaft of the generator are in transmission connection through a flexible transmission assembly;
the flexible drive assembly includes:
the driving belt wheel is arranged on an output shaft of the gear box;
a driven pulley provided on an input shaft of the generator;
the driving belt is used for driving and connecting the driving belt wheel and the driven belt wheel;
or, the flexible transmission assembly includes:
the driving gear is arranged on an output shaft of the gear box;
a driven gear provided on an input shaft of the generator;
and the transmission chain is meshed with the driving gear and the driven gear and is used for connecting the driving gear and the driven gear in a transmission way.
2. The transmission according to claim 1, wherein the driving pulley and the driven pulley each include a groove for the drive belt to be inserted therein, the groove gradually decreasing in width in a direction from an outer periphery of the driving pulley or the driven pulley to an axial center.
3. The transmission of claim 2, wherein the drive pulley and/or the driven pulley further comprises:
a first conical disc for coaxial connection with an output shaft of the gearbox or an input shaft of the generator;
a second conical disk disposed opposite the first conical disk, a gap between the first conical disk and the second conical disk forming the groove;
a groove width adjusting device for driving the first conical disk and the second conical disk to approach or move away from each other to adjust a width of the groove.
4. The transmission of claim 3, wherein the first conical disk of the driving pulley is fixedly connected with the output shaft of the gearbox, and the second conical disk of the driving pulley is slidably connected with the output shaft of the gearbox;
the first conical disc of the driven belt wheel is fixedly connected with the input shaft of the generator, and the second conical disc of the driven belt wheel is connected with the input shaft of the generator in a sliding mode.
5. The transmission of claim 4, wherein the groove width adjustment device comprises:
the telescopic piece is used for driving the second conical disc to be close to or far away from the first conical disc;
and the control system is used for controlling the telescopic piece to stretch and contract.
6. The transmission of claim 2, wherein the belt is a V-belt.
7. The transmission of claim 5, wherein the telescoping member is a cylinder, and the drive end of the cylinder is connected to the second conical disk.
8. A wind power plant comprising a transmission, wherein the transmission is according to any of claims 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122689766.3U CN216642997U (en) | 2021-11-04 | 2021-11-04 | Transmission device and wind generating set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122689766.3U CN216642997U (en) | 2021-11-04 | 2021-11-04 | Transmission device and wind generating set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216642997U true CN216642997U (en) | 2022-05-31 |
Family
ID=81733216
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122689766.3U Active CN216642997U (en) | 2021-11-04 | 2021-11-04 | Transmission device and wind generating set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216642997U (en) |
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2021
- 2021-11-04 CN CN202122689766.3U patent/CN216642997U/en active Active
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