Oil extraction device of wind driven generator

Abstract

The utility model provides an oil extraction device of a wind driven generator, and relates to the technical field of generators. The oil taking device of the wind driven generator comprises a handle assembly and an oil taking assembly. The oil taking assembly is rotationally arranged on the handle assembly, the oil taking assembly rotates relative to the handle assembly so as to adjust the included angle between the handle assembly and the oil taking assembly, the oil taking assembly comprises an oil taking rod and an oil taking part, and the oil taking part is arranged on the oil taking rod and deviates from the handle assembly. The device can adapt to different oil extraction operation spaces conveniently, and oil extraction is facilitated.

Description

Technical Field

[0001] The present application relates to the technical field of generators, and in particular to an oil extraction device for a wind turbine generator. Background Art

[0002] The generator is an indispensable part of the operation of the wind turbine. After the generator has been running for a long time, it is necessary to take oil samples from various positions on the generator shaft for testing to check the operation of the generator. One end of the generator shaft protrudes out of the outside of the end cover, and the other end is set on the inside of the end cover. The end cover needs to be opened before the oil removal operation can be performed.

[0003] In the prior art, a scraper is used to remove oil from the generator shaft surface outside the end cover.

[0004] However, the generator shaft end cover is heavy, so only a corner of the end cover can be opened to expose part of the generator shaft inside the end cover. The space for oil removal is limited, and the scraper is difficult to enter, making it inconvenient to remove the oil. Utility Model Content

[0005] The present application provides an oil extraction device for a wind turbine generator, which is used to solve the problem of limited oil extraction operation space and inconvenient operation.

[0006] In order to achieve the above purpose, the technical solution of this application is as follows:

[0007] The present application provides an oil extraction device for a wind turbine generator, comprising: a handle assembly and an oil extraction assembly; the oil extraction assembly is rotatably arranged on the handle assembly, and the oil extraction assembly rotates relative to the handle assembly to adjust the angle between the handle assembly and the oil extraction assembly, and the oil extraction assembly comprises an oil extraction rod and an oil extraction part, and the oil extraction part is arranged on the oil extraction rod, and the oil extraction part is away from the handle assembly.

[0008] In some possible implementations, the wind turbine oil extraction device provided in the present application comprises a handle assembly including a handle and a sleeve, the handle is connected to the sleeve, a rotating shaft is provided on the sleeve, the rotating shaft is arranged away from the handle, the oil extraction assembly is sleeved on the rotating shaft, and the oil extraction assembly rotates around the rotating shaft.

[0009] In some possible implementations, the wind turbine oil extraction device provided in the present application also includes a stop portion, which is sleeved on the rotating shaft and rotates relative to the rotating shaft. The stop portion abuts or disengages from the oil extraction assembly to fix the angle between the handle assembly and the oil extraction assembly, or to adjust the angle between the handle assembly and the oil extraction assembly.

[0010] In some possible implementations, in the oil extraction device for a wind turbine generator provided by the present application, the stopper is threadedly connected to the rotating shaft.

[0011] In some possible implementations, the oil extraction device for a wind turbine generator provided in the present application further has an adjustment handle on the stop portion.

[0012] In some possible implementations, the oil extraction device for a wind turbine generator provided in the present application, the oil extraction assembly further includes an oil baffle plate, and the oil baffle plate is located on one side of the oil extraction portion.

[0013] In some possible implementations, the oil extraction device for a wind turbine provided in the present application, the oil extraction assembly further includes a first flow guide, the first flow guide is disposed on one side of the oil extraction rod, and the first flow guide is disposed opposite to the oil baffle.

[0014] In some possible implementations, the oil extraction device for a wind turbine provided in the present application, the oil extraction assembly further includes a second flow guide member, the second flow guide member is disposed on one side of the oil extraction rod and is perpendicular to the extension direction of the first flow guide member.

[0015] In some possible implementations, the oil extraction device for a wind turbine generator provided by the present application has an oil extraction portion which is an oil extraction tank, and the oil extraction tank is disposed in the oil extraction rod and is connected to the sleeve.

[0016] In some possible implementations, the oil extraction device for a wind turbine provided in the present application has an oil extraction portion that is bent into a curved concave portion, an oil baffle plate that is connected to the oil extraction portion, the oil baffle plate and the oil extraction portion being integrally formed, and an L-shape being formed between the oil baffle plate and the oil extraction portion.

[0017] The oil extraction device for a wind turbine provided by the present application is provided with a handle assembly and an oil extraction assembly; the oil extraction assembly is rotatably provided on the handle assembly, and the oil extraction assembly rotates relative to the handle assembly to adjust the angle between the handle assembly and the oil extraction assembly, and the oil extraction assembly includes an oil extraction rod and an oil extraction portion, and the oil extraction portion is provided on the oil extraction rod, and the oil extraction portion is away from the handle assembly. The oil extraction assembly is rotatably provided on the handle assembly, and the oil extraction assembly rotates relative to the handle assembly to adjust the angle between the handle assembly and the oil extraction assembly. When the handle assembly and the oil extraction assembly are in the same straight line, the handle assembly and the oil extraction assembly are slender, which is convenient for extending into a slender and narrow gap to extract oil, and is suitable for oil extraction operations in narrow spaces; when the handle assembly and the oil extraction assembly are perpendicular to each other, the oil extraction surface of the oil extraction assembly is wider, and as much oil as possible can be extracted at one time, which is suitable for a wider oil extraction operation space and improves work efficiency. Therefore, the present device is convenient for adapting to different oil extraction operation spaces and is convenient for oil extraction. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0019] Figure 1 A schematic diagram of the structure of the oil extraction device for a wind turbine generator provided in an embodiment of the present application;

[0020] Figure 2 for Figure 1 A schematic diagram of the structure of the oil extraction assembly rotating;

[0021] Figure 3 for Figure 1 Schematic diagram of the structure of the middle oil baffle.

[0022] Description of reference numerals:

[0023] 100-handle assembly;

[0024] 110-handle;

[0025] 120-sleeve;

[0026] 121-rotating shaft;

[0027] 122- stopper;

[0028] 123-Adjustment handle;

[0029] 200-oil extraction assembly;

[0030] 210-Oil rod;

[0031] 220-Oil extraction unit;

[0032] 230-Oil baffle;

[0033] 240-first flow guide;

[0034] 250 - second flow guide.

[0035] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0036] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0037] It should be noted that in the description of the embodiments of the present application, terms such as "upper", "lower", "inside" and "outside" indicating orientation or positional relationships are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of description. They do not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the embodiments of the present application.

[0038] In addition, it should be noted that the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0039] In this application, unless otherwise clearly specified and limited, the terms "installation", "connection", "fixation" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0040] As mentioned in the background technology, after the generator has been running for a long time, it is necessary to take oil from various positions of the generator shaft to check the operation of the generator. One end of the generator shaft protrudes out of the outside of the end cover, and the other end is set on the inside of the end cover. The end cover needs to be opened before the oil removal operation can be performed. In the prior art, a scraper is used to remove oil from the surface of the generator shaft on the outside of the end cover. However, the generator shaft end cover is heavy, and only a corner of the end cover can be opened to expose part of the generator shaft on the inside of the end cover. The oil removal operation space is narrow and long, and the oil removal operation space is limited. It is difficult for the scraper to enter, and it is inconvenient to remove oil.

[0041] In view of this, the present application provides a wind turbine oil extraction device, including: a handle assembly and an oil extraction assembly; the oil extraction assembly is rotatably arranged on the handle assembly, and the oil extraction assembly rotates relative to the handle assembly to adjust the angle between the handle assembly and the oil extraction assembly, and the oil extraction assembly includes an oil extraction rod and an oil extraction portion, and the oil extraction portion is arranged on the oil extraction rod, and the oil extraction portion is away from the handle assembly. The oil extraction assembly is rotatably arranged on the handle assembly, and the oil extraction assembly rotates relative to the handle assembly to adjust the angle between the handle assembly and the oil extraction assembly. When the handle assembly and the oil extraction assembly are in the same straight line, the handle assembly and the oil extraction assembly are slender, which is convenient for extending into a slender and narrow gap to extract oil, and is suitable for oil extraction operations in narrow spaces; when the handle assembly and the oil extraction assembly are perpendicular to each other, the oil extraction surface of the oil extraction assembly is wider, and as much oil as possible can be extracted at one time, thereby improving work efficiency. Therefore, the present device is easy to adapt to different oil extraction operation spaces and is convenient for oil extraction.

[0042] Combine the following Figures 1 to 3 The present application is described in detail with reference to the accompanying drawings and specific embodiments.

[0043] The present application provides an oil extraction device for a wind turbine generator, comprising: a handle assembly 100 and an oil extraction assembly 200; the oil extraction assembly 200 is rotatably arranged on the handle assembly 100, and the oil extraction assembly 200 rotates relative to the handle assembly 100 to adjust the angle between the handle assembly 100 and the oil extraction assembly 200, and the oil extraction assembly 200 comprises an oil extraction rod 210 and an oil extraction portion 220, and the oil extraction portion 220 is arranged on the oil extraction rod 210, and the oil extraction portion 220 is away from the handle assembly 100.

[0044] In specific implementation, the handle assembly 100 is connected to the oil extraction assembly 200, and the oil extraction assembly 200 is used to abut against the surface of the generator shaft. The operator holds the handle assembly 100 and applies force to make the oil extraction assembly 200 move relative to the surface of the generator shaft to extract oil.

[0045] In order to adapt to different oil extraction operation spaces, such as narrow spaces or wide spaces, combined with Figure 1 and Figure 2 The oil extraction assembly 200 is rotatably disposed on the handle assembly 100 , and the oil extraction assembly 200 rotates relative to the handle assembly 100 to adjust the angle between the handle assembly 100 and the oil extraction assembly 200 .

[0046] For example, when the handle assembly 100 and the oil extraction assembly 200 are in the same straight line, that is, the angle between the handle assembly 100 and the oil extraction assembly 200 is 180 degrees, the handle assembly 100 and the oil extraction assembly 200 are slender, and the oil extraction surface width of the oil extraction assembly 200 is narrow, which is convenient for reaching into the slender and narrow gap to extract oil, and adapts to the oil extraction operation in a narrow space; when the handle assembly 100 and the oil extraction assembly 200 are perpendicular to each other, that is, the angle between the handle assembly 100 and the oil extraction assembly 200 is 90 degrees, at this time the oil extraction surface of the oil extraction assembly 200 is wider, and as much oil as possible can be extracted at one time, adapting to a wider space, and improving work efficiency.

[0047] The oil extraction assembly 200 includes an oil extraction rod 210 and an oil extraction portion 220. The oil extraction portion 220 is arranged on the oil extraction rod 210. The oil extraction portion 220 is away from the handle assembly 100. The oil extraction rod 210 is square. The oil extraction rod 210 includes a longer side and a shorter side. The longer side abuts against the surface of the generator shaft, so as to extract as much oil as possible at one time, thereby improving work efficiency. The shorter side is convenient for extending into a slender and narrow gap to extract oil, and abuts against the surface of the generator shaft.

[0048] It should be noted that the angle between the handle assembly 100 and the oil extraction assembly 200 can be adjusted to different angles according to the actual working space and needs. For example, the angle between the handle assembly 100 and the oil extraction assembly 200 can be 15 degrees, 30 degrees, 45 degrees, etc., and this application does not impose any restrictions on this.

[0049] The oil extraction device for a wind turbine in the embodiment of the present application is provided with a handle assembly 100 and an oil extraction assembly 200; the operator holds the handle assembly 100 to facilitate the application of force, and the oil extraction assembly 200 is rotatably provided on the handle assembly 100. The oil extraction assembly 200 rotates relative to the handle assembly 100 to adjust the angle between the handle assembly 100 and the oil extraction assembly 200. The oil extraction assembly 200 includes an oil extraction rod 210 and an oil extraction portion 220. The oil extraction portion 220 is provided on the oil extraction rod 210, and the oil extraction portion 220 faces away from the handle assembly 100.

[0050] The oil extraction assembly 200 is rotatably arranged on the handle assembly 100, and the oil extraction assembly 200 rotates relative to the handle assembly 100 to adjust the angle between the handle assembly 100 and the oil extraction assembly 200. When the handle assembly 100 and the oil extraction assembly 200 are in the same straight line, the handle assembly 100 and the oil extraction assembly 200 are slender, which is convenient for extending into a slender and narrow gap to extract oil, and is suitable for oil extraction operations in narrow spaces; when the handle assembly 100 and the oil extraction assembly 200 are perpendicular to each other, the oil extraction surface of the oil extraction assembly 200 is wider, and as much oil as possible can be extracted at one time, thereby improving work efficiency.

[0051] In some embodiments, the wind turbine oil extraction device provided by the present application, the handle assembly 100 includes a handle 110 and a sleeve 120, the handle 110 is connected to the sleeve 120, a rotating shaft 121 is provided on the sleeve 120, the rotating shaft 121 is arranged away from the handle 110, the oil extraction assembly 200 is sleeved on the rotating shaft 121, and the oil extraction assembly 200 rotates around the rotating shaft 121.

[0052] In a specific implementation, the handle assembly 100 includes a handle 110 and a sleeve 120. An anti-slip pad is provided on the handle 110 to facilitate the operator to hold the handle 110 and apply force to the handle 110 to avoid slipping, thereby improving work efficiency, reducing the error rate of operation, and ensuring the safety of operation.

[0053] In some embodiments, the sleeve 120 is cylindrical, and includes a first connection part, a second connection part, and a sleeve body. The first connection part and the second connection part are arranged at both ends of the sleeve body. The first connection part is connected to the handle 110. For example, the first connection part is plate-shaped and plugged into the handle. The second connection part is connected to the oil extraction rod 210, and the rotating shaft 121 is arranged on the second connection part. A cavity is arranged inside the sleeve 120 to facilitate oil collection.

[0054] In some embodiments, the wind turbine oil extraction device provided in the present application also includes a stop portion 122, and the stop portion 122 is sleeved on the rotating shaft 121. The stop portion 122 rotates relative to the rotating shaft 121, and the stop portion 122 abuts or disengages from the oil extraction assembly 200 to fix the angle between the handle assembly 100 and the oil extraction assembly 200, or to adjust the angle between the handle assembly 100 and the oil extraction assembly 200.

[0055] In a specific implementation, the stop portion 122 is sleeved on the rotating shaft 121 and rotates around the rotating shaft 121, so that the stop portion 122 can be moved along the extension direction of the rotating shaft 121 by screwing the stop portion 122, and the stop portion 122 abuts against the oil extraction assembly 200 to fix the angle between the handle assembly 100 and the oil extraction assembly 200, or the stop portion 122 is disengaged from the abutment with the oil extraction assembly 200, and the oil extraction assembly 200 rotates relative to the handle assembly 100, so as to adjust the angle between the handle assembly 100 and the oil extraction assembly 200.

[0056] In some embodiments, in the oil extraction device for a wind turbine generator provided by the present application, the stopper 122 is threadedly connected to the rotating shaft 121 .

[0057] In specific implementation, the rotating shaft 121 includes a smooth section and a threaded section. A hole is provided at one end of the oil extraction rod 210 facing the rotating shaft 121. The smooth section of the rotating shaft 121 passes through the hole, so that the oil extraction rod 210 is sleeved on the rotating shaft 121, and the oil extraction rod 210 rotates around the rotating shaft 121. The inner wall of the stopper 122 is provided with a thread, and the stopper 122 is connected to the threaded section of the rotating shaft 121. By screwing the stopper 122, the stopper 122 is rotated along the extension direction of the rotating shaft 121. The angle between the handle assembly 100 and the oil extraction assembly 200 is fixed, or the angle between the handle assembly 100 and the oil extraction assembly 200 is adjusted.

[0058] In some embodiments, the oil extraction device for a wind turbine generator provided in the present application further has an adjustment handle 123 disposed on the stop portion 122 .

[0059] In a specific implementation, an adjusting handle 123 is provided on the stopper 122 . The adjusting handle 123 is provided along the extending direction of the rotating shaft 121 . The lower end surface of the adjusting handle 123 is higher than the upper end surface of the oil extraction rod 210 .

[0060] In some embodiments, since lubricating oil is often applied between the stop portion 122 and the rotating shaft 121 or the oil in the oil rod 210 splashes onto the stop portion 122 and the rotating shaft 121, the operator turns the adjustment handle 123 to drive the stop portion 122 to rotate relative to the rotating shaft 121 to avoid direct contact with the stop portion 122 and dirtying the operator's hands.

[0061] In some embodiments, in the oil extraction device for a wind turbine provided by the present application, the oil extraction assembly 200 further includes an oil baffle plate 230 , and the oil baffle plate 230 is located on one side of the oil extraction portion 220 .

[0062] In a specific implementation, in order to prevent oil from overflowing from the oil extraction portion 220 or the oil extraction rod 210, an oil baffle plate 230 is disposed on the oil extraction rod 210, and the oil baffle plate 230 is located on one side of the oil extraction portion 220. The oil baffle plate 230 may be arc-shaped, such as Figure 3 As shown, this application is not limited to this.

[0063] In some embodiments, the connection between the oil baffle plate 230 and the oil extraction rod 210 or the oil extraction portion 220 can be welding or integrally formed to prevent oil from flowing out from the gap at the connection between the oil baffle plate 230 and the oil extraction rod 210 or the oil extraction portion 220.

[0064] In some embodiments, the oil extraction device for a wind turbine provided in the present application, the oil extraction assembly 200 further includes a first flow guide 240 , and the first flow guide 240 is disposed on one side of the oil extraction rod 210 , opposite to the oil baffle plate 230 .

[0065] In specific implementation, the first guide member 240 is arranged on one side of the oil collecting rod 210, and the first guide member 240 is arranged relative to the oil baffle plate 230. The first guide member 240 can be a slope, one end of the slope abuts against the surface of the transformer shaft, and the other end of the slope is connected to the oil collecting rod 210. The inclination direction of the slope is toward the direction of the oil collecting rod 210, which is convenient for introducing oil into the oil collecting rod 210.

[0066] The oil extraction assembly 200 in the embodiment of the present application facilitates the introduction of oil into the oil extraction rod 210 through the first flow guide 240 .

[0067] In some embodiments, the oil extraction device for a wind turbine provided in the present application, the oil extraction assembly 200 further includes a second guide member 250 , which is disposed on one side of the oil extraction rod 210 and is perpendicular to the extension direction of the first guide member 240 .

[0068] In specific implementation, the second flow guide 250 is arranged on one side of the oil extraction rod 210, and the extension direction of the second flow guide 250 is perpendicular to that of the first flow guide 240. The second flow guide 250 can be an inclined surface, one end of the inclined surface abuts against the surface of the transformer shaft, and the other end of the inclined surface is connected to the oil extraction rod 210. The inclined surface is inclined toward the direction of the oil extraction rod 210, so as to facilitate the introduction of oil into the oil extraction rod 210. The second flow guide 250 is located on one side of the shorter side of the oil extraction rod 210, and the first flow guide 240 is located on one side of the longer side of the oil extraction rod 210.

[0069] The oil extraction assembly 200 in the embodiment of the present application facilitates the introduction of oil into the oil extraction rod 210 through the second flow guide 250 .

[0070] In some embodiments, in the oil extraction device for a wind turbine generator provided by the present application, the oil extraction portion 220 is an oil extraction groove 221 , and the oil extraction groove 221 is disposed in the oil extraction rod 210 and communicated with the sleeve 120 .

[0071] In a specific implementation, the thickness of the oil extraction rod 210 is relatively thick, and the oil extraction portion 220 can be a plurality of oil extraction grooves 221, and the plurality of oil extraction grooves 221 are correspondingly connected to the first guide member 240 and the second guide member 250, and the oil extraction grooves 221 are arranged at intervals. Exemplarily, the first guide member 240 is connected to at least one oil extraction groove 221, and the extension direction of the oil extraction groove 221 is perpendicular to the extension direction of the first guide member 240; the second guide member 250 is connected to at least one oil extraction groove 221, and the extension direction of the oil extraction groove 221 is perpendicular to the extension direction of the second guide member 250.

[0072] In some embodiments, each oil extraction groove 221 may be connected to the sleeve 120 via a pipeline to facilitate the collection of oil in the oil extraction groove 221 .

[0073] In some embodiments, in the oil extraction device for a wind turbine provided in the present application, the oil baffle plate 230 and the oil extraction rod 210 are integrally formed, and the oil extraction portion 220 is located between the oil extraction rod 210 and the oil baffle plate 230 and is L-shaped.

[0074] In specific implementation, the oil extraction portion 220 is bent to form a curved recessed portion, the oil extraction portion 220 is connected to the oil baffle plate 230, the oil extraction portion 220 and the oil baffle plate 230 are integrally formed, and an L-shape is formed between the oil extraction portion 220 and the oil baffle plate 230, the oil flows into the oil extraction portion 220, the oil extraction portion 220 is used to collect the oil extracted by the oil extraction rod 210, and the oil baffle plate 230 is used to prevent the oil from overflowing from the oil extraction portion 220.

[0075] The oil extraction portion 220 in the embodiment of the present application is bent to form a curved recessed portion which cooperates with the oil baffle plate 230 to form an L-shaped temporary oil collecting space, which can better collect oil and effectively prevent the oil extraction rod 210 from shaking or moving during the oil extraction process and causing the oil to overflow from the oil extraction rod 210.

[0076] In the embodiment of the present application, the bending radius of the oil extraction portion 220 and the length of the oil baffle plate 230 can be designed according to actual use requirements, and the present application does not impose any restrictions on this. For example, the bending radius of the oil extraction portion 220 is 15 degrees, and the length of the oil baffle plate 230 is half of the oil extraction rod 210.

[0077] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the utility model disclosed herein. The present application is intended to cover any variations, uses or adaptations of the present application, which follow the general principles of the present application and include common knowledge or customary techniques in the art that are not disclosed in the present application. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present application are indicated by the following claims.

[0078] It should be understood that the present application is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A wind turbine oil extraction device, characterized in that: It comprises: a handle assembly (100) and an oil extraction assembly (200); The oil extraction assembly (200) is rotatably arranged on the handle assembly (100). The oil extraction assembly (200) rotates relative to the handle assembly (100) to adjust the angle between the handle assembly (100) and the oil extraction assembly (200). The oil extraction assembly (200) comprises an oil extraction rod (210) and an oil extraction portion (220). The oil extraction portion (220) is arranged on the oil extraction rod (210), and the oil extraction portion (220) faces away from the handle assembly (100).

2. The oil extraction device for a wind turbine generator according to claim 1, characterized in that: The handle assembly (100) comprises a handle (110) and a sleeve (120), wherein the handle (110) is connected to the sleeve (120), a rotating shaft (121) is arranged on the sleeve (120), and the rotating shaft (121) is arranged away from the handle (110), and the oil extraction rod (210) is sleeved on the rotating shaft (121), and the oil extraction rod (210) rotates around the rotating shaft (121).

3. The oil extraction device for a wind turbine generator according to claim 2, characterized in that: The invention also comprises a stopper (122), wherein the stopper (122) is sleeved on the rotating shaft (121), and the stopper (122) rotates relative to the rotating shaft (121), and the stopper (122) abuts against or disengages from the oil extraction assembly (200) to fix the angle between the handle assembly (100) and the oil extraction assembly (200), or to adjust the angle between the handle assembly (100) and the oil extraction assembly (200).

4. The oil extraction device for a wind turbine generator according to claim 3, characterized in that: The stopper (122) is threadedly connected to the rotating shaft (121).

5. The oil extraction device for a wind turbine generator according to claim 4, characterized in that: The stopper (122) is also provided with an adjustment handle (123).

6. The oil extraction device for a wind turbine generator according to any one of claims 2 to 5, characterized in that: The oil extraction assembly (200) further comprises an oil baffle plate (230), wherein the oil baffle plate (230) is located on one side of the oil extraction portion (220).

7. The oil extraction device for a wind turbine generator according to claim 6, characterized in that: The oil extraction assembly (200) further comprises a first flow guide (240), wherein the first flow guide (240) is arranged on one side of the oil extraction rod (210), and the first flow guide (240) is arranged opposite to the oil baffle plate (230).

8. The oil extraction device for a wind turbine generator according to claim 7, characterized in that: The oil extraction assembly (200) further comprises a second flow guide member (250), wherein the second flow guide member (250) is arranged on one side of the oil extraction rod (210) and is perpendicular to the extension direction of the first flow guide member (240).

9. The oil extraction device for a wind turbine generator according to claim 8, characterized in that: The oil extraction portion (220) is an oil extraction groove, which is arranged in the oil extraction rod (210) and is in communication with the sleeve (120).

10. The oil extraction device for a wind turbine generator according to claim 8, characterized in that: The oil extraction portion (220) is bent to form a concave portion with an arc, the oil baffle plate (230) is connected to the oil extraction portion (220), the oil baffle plate (230) and the oil extraction portion (220) are integrally formed, and an L-shape is formed between the oil baffle plate (230) and the oil extraction portion (220).

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