CN220791992U - Wind power yaw variable pitch speed reducer - Google Patents
Wind power yaw variable pitch speed reducer Download PDFInfo
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- CN220791992U CN220791992U CN202322522492.8U CN202322522492U CN220791992U CN 220791992 U CN220791992 U CN 220791992U CN 202322522492 U CN202322522492 U CN 202322522492U CN 220791992 U CN220791992 U CN 220791992U
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- 239000003638 chemical reducing agent Substances 0.000 title claims abstract description 21
- 230000005540 biological transmission Effects 0.000 claims abstract description 38
- 230000007704 transition Effects 0.000 claims abstract description 33
- 230000005611 electricity Effects 0.000 claims 1
- 230000009347 mechanical transmission Effects 0.000 abstract description 2
- 230000035939 shock Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 6
- 230000008859 change Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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- 238000010248 power generation Methods 0.000 description 1
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Abstract
The utility model belongs to the technical field of mechanical transmission, and relates to a wind power yaw pitch-variable speed reducer, which comprises a shell, a power input shaft and a power output disc, wherein the power input shaft and the power output disc are coaxially arranged and respectively in running fit with the shell; the inner side and the outer side of the transition wheel are respectively provided with external teeth and internal teeth which are coaxially arranged, the driving teeth are meshed with the internal teeth, and the external teeth are meshed with an annular gear on the shell; the transition wheel is provided with a plurality of transmission holes, the power output disc is fixedly provided with a transmission pin, and one end of the transmission pin extends into the transmission holes; the transition wheel transmits power to the power output disc through a transmission pin. The speed reducer adopts novel multi-tooth meshing, has large transmission overlap ratio and high shock resistance, and realizes large-speed-ratio transmission in a completely different transmission form compared with the traditional planet carrier structure.
Description
Technical Field
The utility model belongs to the technical field of mechanical transmission, and relates to a wind power yaw pitch-variable speed reducer.
Background
Wind energy is a clean perpetual energy source, wind power generation gradually becomes an internationalized industry, and is an important way for human development and utilization of clean energy sources in the future. Because wind field is complicated due to wind condition, the change of wind direction and the change of wind intensity can influence the operation of fan, in order to guarantee the normal operating of whole fan system, need to make fan system be in good running state through the adjustment of driftage variable pitch speed reducer.
The existing yaw primary adopts an NGW transmission structure, a primary is generally formed by 1 sun wheel and 3 planetary wheel structures, a transmission system is formed by multiple stages, the sizes of the sun wheel, the planetary wheel and the gear ring of the traditional structure can not be reduced any more through a plurality of years of design, and when the yaw primary is used for high-speed rotation, noise and vibration are large, the power density can not be improved again due to the existing structure, the efficiency of a gear box is affected by multi-stage combined transmission, and transmission errors are reduced.
Disclosure of Invention
In view of the above, an object of the present utility model is to solve the above problems and provide a wind power yaw pitch reduction gear.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
the wind power yaw pitch-variable speed reducer comprises a shell, a power input shaft and a power output disc, wherein the power input shaft and the power output disc are coaxially arranged and respectively in running fit with the shell, an annular gear concentric with the power input shaft is fixedly arranged on the shell, driving teeth are eccentrically arranged on the outer circle of the power input shaft in running fit, and a transition wheel is arranged between the driving teeth and the annular gear; the inner side and the outer side of the transition wheel are respectively provided with external teeth and internal teeth which are coaxially arranged, the driving teeth are meshed with the internal teeth, and the external teeth are meshed with an annular gear on the shell; the transition wheel is provided with a plurality of transmission holes, the power output disc is fixedly provided with a transmission pin, and one end of the transmission pin extends into the transmission holes; the transition wheel transmits power to the power output disc through a transmission pin.
Further, at least one of the drive teeth is provided.
Further, the plurality of driving teeth are axially distributed along the power input shaft, and the centers of the plurality of driving teeth are circularly distributed; at least two of the plurality of driving teeth are meshed with the transition wheel at the same time, and the included angle of the eccentric direction of any two driving teeth meshed at the same time is not 180 degrees. The plurality of drive teeth increase the tooth width of the engagement, thereby increasing the load carrying capacity.
Furthermore, a locating pin is fixedly arranged on the power output disc, and one end of the locating pin is provided with a limiting step; the locating pin passes through the transition wheel and axially limits the transition wheel through the limiting step.
Further, a gasket is arranged between the power output disc and the transition wheel, and the transition wheel is supported by the gasket.
Further, the power input shaft and the power output disc are respectively provided with an interface for connecting power input and power output.
Further, an eccentric section is arranged on the power input shaft, and the driving teeth are rotatably arranged on the eccentric section through bearings.
Further, a mounting hole is formed in the center of the power output disc, and one end of the power input shaft is rotatably arranged in the mounting hole through a bearing.
The utility model has the beneficial effects that:
1. the speed reducer adopts novel multi-tooth meshing, and compared with the traditional planet carrier structure, the speed reducer has completely different transmission modes, and realizes large-speed-ratio transmission. The transmission device has the advantages of reducing the number of parts, being simple in structure, more modularized and convenient to maintain, greatly reducing the radial size, realizing larger torque transmission under the same size condition, replacing the traditional yaw and pitch-variable planetary structure and better realizing the equal-strength design requirement.
2. The utility model has large transmission overlap ratio, low noise and high shock resistance during high-speed operation; the transmission ratio is large, and the same level is not limited by the condition of identical modulus. The transmission form of the utility model has higher transmission power density than the traditional NGW, and can reduce the radial dimension under the condition of the same dimension.
Additional advantages, objects, and features of the utility model will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the utility model. The objects and other advantages of the utility model may be realized and obtained by means of the instrumentalities and combinations particularly pointed out in the specification.
Drawings
For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the present utility model will be described in the following preferred detail with reference to the accompanying drawings, in which:
FIG. 1 is a schematic diagram of a wind power yaw pitch-variable speed reducer.
Fig. 2 is a schematic diagram of a deceleration structure.
Fig. 3 is a schematic diagram of the structure of the speed reducer.
Reference numerals: 1-an inner gear ring; 2-a power input shaft; 3-a power take-off disc; 4-driving teeth; 5-transition wheels; 6-a drive pin; 7-a transmission hole; 8-locating pins; 9-a gasket; 10-positioning rings; 11-wear-resistant pad.
Detailed Description
Other advantages and effects of the present utility model will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present utility model with reference to specific examples. The utility model may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present utility model. It should be noted that the illustrations provided in the following embodiments merely illustrate the basic idea of the present utility model by way of illustration, and the following embodiments and features in the embodiments may be combined with each other without conflict.
Wherein the drawings are for illustrative purposes only and are shown in schematic, non-physical, and not intended to limit the utility model; for the purpose of better illustrating embodiments of the utility model, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the size of the actual product; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numbers in the drawings of embodiments of the utility model correspond to the same or similar components; in the description of the present utility model, it should be understood that, if there are terms such as "upper", "lower", "left", "right", "front", "rear", etc., that indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, it is only for convenience of describing the present utility model and simplifying the description, but not for indicating or suggesting that the referred device or element must have a specific azimuth, be constructed and operated in a specific azimuth, so that the terms describing the positional relationship in the drawings are merely for exemplary illustration and should not be construed as limiting the present utility model, and that the specific meaning of the above terms may be understood by those of ordinary skill in the art according to the specific circumstances.
Referring to fig. 1-3, the wind power yaw pitch-variable speed reducer comprises a shell, a power input shaft 2 and a power output disc 3, wherein the power input shaft 2 and the power output disc 3 are coaxially arranged and respectively in running fit with the shell, an annular gear 1 concentric with the power input shaft 2 is fixedly arranged on the shell, driving teeth 4 are eccentrically arranged on the outer circle of the power input shaft 2 in running fit, and transition wheels 5 are arranged between the driving teeth 4 and the annular gear 1; the inner side and the outer side of the transition wheel 5 are respectively provided with external teeth and internal teeth which are coaxially arranged, the driving teeth 4 are meshed with the internal teeth, and the external teeth are meshed with the annular gear 1 on the shell; a plurality of transmission holes 7 are formed in the transition wheel 5, a transmission pin 6 is fixedly arranged on the power output disc 3, and one end of the transmission pin 6 extends into the transmission holes 7; the transition wheel 5 revolves around the center of the annular gear 1 and rotates at the same time, and power is transmitted to the power output disc 3 through the transmission pin 6 in the rotating process.
In this embodiment, the center of the power output disc 3 is provided with a mounting hole, one end of the power input shaft 2 is rotatably mounted in the mounting hole through a bearing, and a wear-resistant gasket 11 is arranged between the power input shaft 2 and the power output disc. The power input shaft 2 and the power output disc 3 are respectively provided with an interface for connecting power input and power output.
In this embodiment, the power input shaft 2 is provided with an eccentric section, and the driving teeth 4 are rotatably mounted on the eccentric section through bearings. Wherein, 2 driving teeth 4 are axially distributed along the power input shaft 2, and are axially positioned by a positioning ring 10, the centers of the 2 driving teeth 4 are circularly distributed, and the included angle of the eccentric direction is not 180 degrees; the 2 drive teeth 4 are simultaneously engaged with the transition wheel 5. The use of 2 drive teeth 4 increases the tooth width of the engagement, thereby increasing the load carrying capacity.
A locating pin 8 is fixedly arranged on the power output disc 3, and one end of the locating pin 8 is provided with a limiting step; the positioning pin 8 penetrates through the transition wheel 5 and axially limits the transition wheel 5 through the limiting step.
A gasket 9 is arranged between the power output disc 3 and the transition wheel 5, the transition wheel 5 is supported by the gasket 9, and the transition wheel 5 is in sliding fit with the gasket 9 in the rotating process, so that the gasket 9 is made of wear-resistant materials.
The two sides of the shell are respectively provided with a detachable front end cover and a detachable rear end cover through bolts; the front end cover is internally provided with a switching shaft which is rotatably arranged in the front end cover through a bearing and is connected with the power input shaft 2, so that the power input shaft 2 is supported while power transmission is realized. An output shaft is arranged in the rear end cover, the output shaft is rotatably arranged in the rear end cover through a bearing and is connected with the power output disc 3 through spline fit, and the power output disc 3 is supported while power transmission is realized.
Fig. 3 is a schematic diagram of the structure of the present embodiment, and the speed ratio of the wind power yaw pitch-variable speed reducer in the present embodiment is calculated as follows:
from the schematic structural diagram, n c ＝n d Therefore:
from the schematic structural diagram, n c ＝n d ，n e =0, so:
simplifying (1) and (2) to obtain:
note that: z is Z a And Z b The number of teeth is the same, and the function is to increase the meshing tooth width and improve the bearing capacity.
Wherein, the number of teeth of each gear is: z is Z a ＝25，Z c ＝27，Z d ＝115，Z e The modulus of the internal teeth of the drive tooth 4 and the transition wheel 5 is 3, and the modulus of the external teeth of the transition wheel 5 and the internal gear ring 1 is 1.5. The calculation result of the carried-in (8) formula is as follows: 10.123.
finally, it is noted that the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the present utility model, which is intended to be covered by the claims of the present utility model.
Claims (8)
1. The utility model provides a wind-powered electricity generation driftage becomes oar speed reducer which characterized in that: the power input shaft is coaxially arranged and respectively matched with the power input shaft in a rotating way, an annular gear concentric with the power input shaft is fixedly arranged on the housing, driving teeth are eccentrically arranged on the outer circle of the power input shaft in a rotating way, and a transition wheel is arranged between the driving teeth and the annular gear; the inner side and the outer side of the transition wheel are respectively provided with external teeth and internal teeth which are coaxially arranged, the driving teeth are meshed with the internal teeth, and the external teeth are meshed with an annular gear on the shell; the transition wheel is provided with a plurality of transmission holes, the power output disc is fixedly provided with a transmission pin, and one end of the transmission pin extends into the transmission holes; the transition wheel transmits power to the power output disc through a transmission pin.
2. The wind power yaw pitch reducer of claim 1, wherein: at least one of the drive teeth.
3. The wind power yaw pitch reducer of claim 2, wherein: the plurality of driving teeth are axially distributed along the power input shaft, and the centers of the plurality of driving teeth are circularly distributed; at least two of the plurality of driving teeth are meshed with the transition wheel at the same time, and the included angle of the eccentric direction of any two driving teeth meshed at the same time is not 180 degrees.
4. The wind power yaw pitch reducer of claim 1, wherein: a locating pin is fixedly arranged on the power output disc, and one end of the locating pin is provided with a limiting step; the locating pin passes through the transition wheel and axially limits the transition wheel through the limiting step.
5. The wind power yaw pitch reducer of claim 1, wherein: and a gasket is arranged between the power output disc and the transition wheel, and the transition wheel is supported by the gasket.
6. The wind power yaw pitch reducer of claim 1, wherein: and interfaces are arranged on the power input shaft and the power output disc and are used for connecting power input and power output.
7. The wind power yaw pitch reducer of claim 1, wherein: the power input shaft is provided with an eccentric section, and the driving teeth are rotatably arranged on the eccentric section through bearings.
8. The wind power yaw pitch reducer of claim 1, wherein: the center of the power output disc is provided with a mounting hole, and one end of the power input shaft is rotatably arranged in the mounting hole through a bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322522492.8U CN220791992U (en) | 2023-09-15 | 2023-09-15 | Wind power yaw variable pitch speed reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322522492.8U CN220791992U (en) | 2023-09-15 | 2023-09-15 | Wind power yaw variable pitch speed reducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220791992U true CN220791992U (en) | 2024-04-16 |
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ID=90633732
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322522492.8U Active CN220791992U (en) | 2023-09-15 | 2023-09-15 | Wind power yaw variable pitch speed reducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220791992U (en) |
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2023
- 2023-09-15 CN CN202322522492.8U patent/CN220791992U/en active Active
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