The wind turbine reducer features a split hollow structure output shaft.

Abstract

A separate hollow structure output shaft for a wind turbine reducer relates to the field of wind turbine reducer technology. It can reduce the cost of the wind turbine reducer output shaft, effectively lower its maintenance difficulty, and significantly improve its economy and reliability, thus helping the wind power industry further reduce costs and increase efficiency. In the separate hollow structure output shaft of the wind turbine reducer, the output shaft adopts a separate structure for the output spline and the output gear, that is, the output gear and the output spline are separated into two independent parts; the output gear adopts an internal spline connection method, and the spline width of the internal spline is adjustable; both the output gear and the spline sleeve adopt a hollow structure, and the spline sleeve is installed on and positioned on the output gear.

Description

Technical Field

[0001] This utility model relates to the field of wind power reducer technology, and in particular to a split hollow structure output shaft for a wind power reducer. Background Technology

[0002] Currently, the wind power gearbox industry is in a stage of rapid development. With the continuous growth of global wind power installed capacity and the acceleration of technological iteration, large-megawatt models are gradually becoming the mainstream in the market.

[0003] However, behind the industry's booming development, cost issues are becoming increasingly prominent, becoming a key bottleneck restricting the industry's sustainable development. As a core component of the wind turbine generator's transmission system, the reducer output shaft accounts for up to 20% of the reducer's weight. As a critical component of the reducer, the output shaft's performance directly affects the reliability, efficiency, and maintenance costs of the wind turbine generator.

[0004] However, the output shaft of wind turbine reducers currently mainly adopts the traditional integral solid shaft structure. Although it has a simple structure, it is heavy, has low material utilization, and is expensive. Once damaged, it needs to be replaced as a whole, resulting in high maintenance costs and long downtime.

[0005] In addition, the traditional output shaft spline is limited by the total height of the reducer, which leads to limitations in the spline width design and consequently results in lower spline safety performance. Utility Model Content

[0006] The purpose of this utility model is to provide a split hollow structure output shaft for wind turbine reducers, which can reduce the cost of wind turbine reducer output shafts, effectively reduce their maintenance difficulty, and significantly improve their economy and reliability, so as to help the wind power industry further reduce costs and increase efficiency.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A split hollow structure output shaft for a wind turbine reducer, wherein the output shaft adopts a split structure of output spline and output gear, that is, the output gear and the output spline are separated into two independent parts;

[0009] The output gear adopts an internal spline connection, and the spline width of the internal spline is adjustable;

[0010] Both the output gear and the spline sleeve have a hollow structure, and the spline sleeve is installed on and positioned on the output gear.

[0011] In practical applications, the sun gear is floatingly mounted on the planetary component and transmits power, and the planetary component is connected to the output gear through the spline sleeve; the planetary component consists of a planet carrier, planet gears, bearings, snap rings, positioning baffles, and a ball top.

[0012] The hollow spline sleeve is interference-fitted with a first baffle and a second baffle and serves as an oil seal.

[0013] Specifically, the third baffle is interference-fitted to the output gear in the hollow structure and serves as an oil seal.

[0014] Compared with existing technologies, the split hollow structure output shaft of the wind power reducer described in this utility model has the following advantages:

[0015] The wind turbine reducer provided by this utility model features a separate hollow output shaft. Because the output shaft adopts a separate structure for the output spline and output gear—meaning the output gear and output spline are two independent parts—the detachable structure allows for individual replacement of the spline sleeve when it wears, effectively reducing maintenance costs and extending the service life of the output shaft. Furthermore, the same spline sleeve can be matched with gears of different modules / numbers of teeth, thus expanding its application prospects. Since the output gear uses an internal spline connection with an adjustable spline width, the spline width can be flexibly adjusted according to specific requirements, effectively ensuring the safety performance of the spline and further extending the service life of the output gear. Because both the output gear and spline sleeve are hollow, and the spline sleeve is installed and positioned on the output gear, the weight of the output shaft can be effectively reduced, torque density significantly improved, and costs reduced for use in transmission systems requiring lightweight design. Attached Figure Description

[0016] Figure 1 A cross-sectional view of the split hollow structure output shaft of the wind power reducer provided in this embodiment of the utility model;

[0017] Figure 2 A schematic diagram of the positioning structure of the spline sleeve in the split hollow structure output shaft of the wind power reducer provided in this embodiment of the utility model.

[0018] Figure label:

[0019] 1-Snap ring; 2-Planet gear; 3-Bearing; 4-Planet carrier; 5-Sun gear; 6-Positioning baffle; 7-Spline sleeve; 10-Output gear; 11-Third baffle; 12-First baffle; 14-Second baffle; 15-Spherical dome. Detailed Implementation

[0020] For ease of understanding, the separate hollow structure output shaft of the wind power reducer provided in the embodiment of this utility model will be described in detail below with reference to the accompanying drawings.

[0021] This utility model embodiment provides a split hollow structure output shaft for a wind power reducer, such as... Figure 1 and Figure 2 As shown, the output shaft adopts a separate structure of output spline and output gear 10, that is, output gear 10 and output spline are separated into two independent parts; output gear 10 adopts internal spline connection, and the spline width of internal spline is adjustable; both output gear 10 and spline sleeve 7 adopt hollow structure, and spline sleeve 7 is installed on output gear 10 and positioned.

[0022] Compared with the prior art, the split hollow structure output shaft of the wind power reducer described in this embodiment of the invention has the following advantages:

[0023] The split hollow structure output shaft of the wind turbine reducer provided in this embodiment of the utility model adopts a separate structure for the output spline and the output gear, that is, the output gear and the output spline are separated into two independent parts. Therefore, the detachable structure can realize the individual replacement when the spline sleeve is worn, thereby effectively reducing maintenance costs and effectively extending the service life of the output shaft. In addition, the same spline sleeve can match gears with different modules / number of teeth, thus expanding the application prospects. Since the output gear adopts an internal spline connection method, and the spline width of the internal spline is adjustable, the spline width can be flexibly adjusted according to the specific solution requirements, thereby effectively ensuring the safety performance of the spline and further extending the service life of the output gear. Since both the output gear and the spline sleeve adopt a hollow structure, and the spline sleeve is installed on and positioned on the output gear, the weight of the output shaft can be effectively reduced, the torque density can be significantly improved, and the cost can be reduced to suit transmission systems that require lightweight design.

[0024] In practical applications, such as Figure 1 and Figure 2 As shown, the sun gear 5 is floatingly mounted on the planetary component and transmits power, and the planetary component is connected to the output gear 10 through the spline sleeve 7; the planetary component consists of the planet carrier 4, planet gear 2, bearing 3, snap ring 1, positioning baffle 6, and ball top 15.

[0025] Among them, such as Figure 1 and Figure 2 As shown, the hollow spline sleeve 7 is interference-fitted with a first baffle 12 and a second baffle 14 and serves as an oil seal.

[0026] Specifically, such as Figure 1 and Figure 2 As shown, the third baffle 11 is interference-fitted to the hollow output gear 10 and serves as an oil seal.

[0027] The power transmission route of the split hollow structure output shaft of the wind power reducer provided in this embodiment is as follows: the power is input by the sun gear 5, which drives the hollow spline sleeve 7 through the planetary component, and the hollow spline sleeve 7 drives the hollow inner spline output gear 10 to output power.

[0028] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A split hollow structure output shaft for a wind turbine reducer, characterized in that, The output shaft adopts a separate structure of output spline and output gear, that is, the output gear and the output spline are separated into two independent parts; The output gear adopts an internal spline connection, and the spline width of the internal spline is adjustable; Both the output gear and the spline sleeve have a hollow structure, and the spline sleeve is installed on and positioned on the output gear.

2. The split hollow structure output shaft of a wind power reducer according to claim 1, characterized in that, The sun gear is floatingly mounted on the planetary component and transmits power, and the planetary component is connected to the output gear through the spline sleeve; the planetary component consists of a planet carrier, planet gears, bearings, snap rings, positioning baffles, and a ball top.

3. The split hollow construction output shaft of a windmill reducer according to claim 2, characterized in that, The spline sleeve of the hollow structure is interference-fitted with a first baffle and a second baffle and serves as an oil seal.

4. The split hollow construction output shaft of wind power reducer according to claim 3, characterized in that, The third baffle is interference-fitted to the output gear in the hollow structure and serves as an oil seal.

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