Hub of wind driven generator

Abstract

The utility model relates to the technical field of wind driven generators, in particular to a hub of a wind driven generator, which is characterized in that a main shaft flange is fixedly connected with a fixing ring, the fixing ring is sleeved with a protective sleeve in a sliding manner, the inner wall of the protective sleeve is fixedly connected with a sealing ring, the sealing ring is contacted with the outer wall of the fixing ring, one side of the protective sleeve is fixedly connected with a limiting ring, and the limiting ring is sleeved with the protective sleeve. The inner ring wall of the limiting ring makes contact with the main shaft flange, and the limiting ring is located between the hub body and the protective sleeve. The limiting ring is pushed to move towards the fixing ring, the limiting ring moves to drive the protective sleeve to move, the protective sleeve drives the sealing ring to move, the limiting ring makes contact with the fixing ring after moving by a certain distance, the protective sleeve covers the connecting position of the driving shaft and the main shaft flange, and the sealing ring makes contact with the outer wall of the connecting position of the driving shaft and the main shaft flange. And dust is prevented from falling on the joint of the driving shaft and the main shaft flange, so that the work of the driving shaft is not influenced.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine technology, and in particular to a wind turbine hub. Background Technology

[0002] The wind turbine hub is one of the key components of a wind turbine generator set. Located at the center of the turbine, it connects the blades and the main shaft and is responsible for transferring the wind energy captured by the blades to the generator. The design and performance of the hub directly affect the efficiency, reliability and lifespan of the wind turbine.

[0003] The wind turbine hub is connected to the drive shaft via a main shaft flange. To reduce friction, lubricant is applied to the connection between the main shaft flange and the drive shaft. However, during the operation of the wind turbine, dust can easily enter the connection between the main shaft flange and the drive shaft, leading to increased friction and reducing the lubricating effect of the lubricant, thus affecting the operation of the wind turbine. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies where dust easily enters the connection between the main shaft flange and the drive shaft, leading to increased friction, reduced lubrication effect of the lubricant, and thus affecting the operation of the wind turbine. Therefore, this invention proposes a wind turbine hub.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] Design a wind turbine hub, including a hub body, several pitch bearing flanges connected to the hub body, a main shaft flange connected to the hub body, a fixing ring fixedly connected to the main shaft flange, a protective sleeve slidably sleeved on the fixing ring, a sealing ring fixedly connected to the inner wall of the protective sleeve, the sealing ring contacting the outer wall of the fixing ring, a limit ring fixedly connected to one side of the protective sleeve, the inner wall of the limit ring contacting the main shaft flange, and the limit ring located between the hub body and the protective sleeve.

[0007] Preferably, the wheel hub body is coated with an anti-corrosion coating, and the wheel hub body is connected with a number of reinforcing ribs.

[0008] Preferably, the inner ring wall of the limiting ring is provided with a plurality of mounting grooves at equal intervals along the axis, and each mounting groove is rotatably connected to a roller, and each roller is in rolling contact with the outer wall of the main shaft flange.

[0009] Preferably, the fixing ring is connected with a plurality of guide posts at equal intervals along the axis, and the limiting ring is provided with through holes at equal intervals along the axis, with one end of each guide post passing through the corresponding through hole.

[0010] Preferably, each of the through holes is fixedly connected with an anti-wear rubber ring, and each of the anti-wear rubber rings is in contact with the corresponding guide post.

[0011] Preferably, a locking block is fixedly connected to the limiting ring, and a locking groove is provided on the fixing ring, with the locking block cooperating with the locking groove.

[0012] The wind turbine hub proposed in this utility model has the following advantages:

[0013] By pushing the limit ring towards the fixed ring, the limit ring moves, causing the protective sleeve to move, which in turn moves the sealing ring. After the limit ring moves a certain distance, it contacts the fixed ring. The protective sleeve covers the connection between the drive shaft and the main shaft flange, and the sealing ring contacts the outer wall of the connection between the drive shaft and the main shaft flange, preventing dust from falling at the connection between the drive shaft and the main shaft flange, thus not affecting the operation of the drive shaft. Attached Figure Description

[0014] Figure 1 A schematic diagram of the structure of a wind turbine hub proposed in this utility model. Figure 1 ;

[0015] Figure 2 A schematic diagram of the structure of a wind turbine hub proposed in this utility model. Figure 2 ;

[0016] Figure 3 This is a cross-sectional structural schematic diagram of a wind turbine hub proposed in this utility model;

[0017] Figure 4 for Figure 3 A magnified schematic diagram of the structure at point A above.

[0018] In the diagram: 1. Hub body; 2. Reinforcing rib; 3. Pitch bearing flange; 4. Main shaft flange; 5. Fixing ring; 6. Protective sleeve; 7. Sealing ring; 8. Limiting ring; 9. Guide post; 10. Through hole; 11. Roller; 12. Locking block; 13. Locking groove. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] Example 1: Refer to Figure 1-4A wind turbine hub includes a hub body 1, on which an anti-corrosion coating, a polyurethane coating layer, is sprayed. This coating protects the hub body 1 from corrosion, slows down the rate of corrosion, and extends its service life. Several reinforcing ribs 2 are connected to the hub body 1 to enhance its strength and prevent cracking during use. Several pitch bearing flanges 3 are connected to the hub body 1, and a main shaft flange 4 is also connected to the hub body 1. The main shaft flange 4 is fixed with... A fixed ring 5 is fixedly connected, and a protective sleeve 6 is slidably sleeved on the fixed ring 5. A sealing ring 7 is fixedly connected to the inner wall of the protective sleeve 6, and the sealing ring 7 is in contact with the outer wall of the fixed ring 5. A limit ring 8 is fixedly connected to one side of the protective sleeve 6, and the inner ring wall of the limit ring 8 is in contact with the main shaft flange 4. The limit ring 8 is located between the hub body 1 and the protective sleeve 6. Several mounting grooves are equally spaced along the axis on the inner ring wall of the limit ring 8. A roller 11 is rotatably connected in each mounting groove, and each roller 11 is in rolling contact with the outer wall of the main shaft flange 4.

[0021] Work process:

[0022] The blades are mounted on the pitch bearing flange 3, and the drive shaft is connected to the main shaft flange 4. After the drive shaft is fixed, the limiting ring 8 is pushed to move towards the fixed ring 5. The limiting ring 8 rolls against the outer wall of the main shaft flange 4 through the roller 11. After the limiting ring 8 moves, it drives the protective sleeve 6 to move. The protective sleeve 6 drives the sealing ring 7 to move. After the limiting ring 8 moves a certain distance, it contacts the fixed ring 5. The limiting ring 8 limits the protective sleeve 6 to prevent the protective sleeve 6 from separating from the fixed ring 5. After the limiting ring 8 contacts the fixed ring 5, the protective sleeve 6 covers the connection between the drive shaft and the main shaft flange 4. The sealing ring 7 contacts the outer wall of the connection between the drive shaft and the main shaft flange 4 to prevent dust from falling at the connection between the drive shaft and the main shaft flange 4, thus not affecting the operation of the drive shaft.

[0023] Example 2: In Example 1, after the protective sleeve 6 covers the connection between the drive shaft and the main shaft flange 4, due to the lack of fixation of the protective sleeve 6, it is easy for the protective sleeve 6 to slide on the fixing ring 5 during the rotation of the drive shaft. This causes a certain degree of misalignment between the protective sleeve 6 and the connection between the drive shaft and the main shaft flange 4, thereby reducing the protective effect. (Refer to...) Figure 4 As another preferred embodiment of this utility model, the difference from embodiment 1 is that a plurality of guide posts 9 are connected at equal intervals along the axis of the fixing ring 5, and through holes 10 are opened at equal intervals along the axis of the limiting ring 8. One end of each guide post 9 passes through the corresponding through hole 10. An anti-wear rubber ring is fixedly connected in each through hole 10. Each anti-wear rubber ring is in contact with the corresponding guide post 9. A locking block 12 is fixedly connected to the limiting ring 8, and a locking groove 13 is opened on the fixing ring 5. The locking block 12 and the locking groove 13 cooperate with each other.

[0024] During the movement of the limiting ring 8, it slides on the guide post 9. The guide post 9 guides the limiting ring 8, allowing it to move smoothly. When the limiting ring 8 contacts the fixed ring 5, the locking block 12 engages with the locking groove 13. The locking block 12 and the locking groove 13 work together to fix the limiting ring 8, thereby fixing the protective sleeve 6. During the rotation of the drive shaft, the locking block 12 and the locking groove 13 work together to fix the limiting ring 8, preventing the protective sleeve 6 from sliding and thus improving the shielding and protection effect at the connection between the drive shaft and the main shaft flange 4.

[0025] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A wind turbine hub, comprising a hub body (1), wherein a plurality of pitch bearing flanges (3) are connected to the hub body (1), characterized in that, in: A main shaft flange (4) is connected to the hub body (1). A fixing ring (5) is fixedly connected to the main shaft flange (4). A protective sleeve (6) is slidably sleeved on the fixing ring (5). A sealing ring (7) is fixedly connected to the inner wall of the protective sleeve (6). The sealing ring (7) is in contact with the outer wall of the fixing ring (5). A limiting ring (8) is fixedly connected to one side of the protective sleeve (6). The inner ring wall of the limiting ring (8) is in contact with the main shaft flange (4). The limiting ring (8) is located between the hub body (1) and the protective sleeve (6).

2. The wind turbine hub according to claim 1, characterized in that, The hub body (1) is coated with an anti-corrosion coating, and a number of reinforcing ribs (2) are connected to the hub body (1).

3. The wind turbine hub according to claim 1, characterized in that, The inner ring wall of the limiting ring (8) is provided with several mounting grooves at equal intervals along the axis. Each mounting groove is rotatably connected to a roller (11), and each roller (11) is in rolling contact with the outer wall of the main shaft flange (4).

4. The wind turbine hub according to claim 3, characterized in that, The fixing ring (5) is connected with a number of guide posts (9) at equal intervals along the axis, and the limiting ring (8) is provided with through holes (10) at equal intervals along the axis. One end of each guide post (9) passes through the corresponding through hole (10).

5. The wind turbine hub according to claim 4, characterized in that, Each of the through holes (10) is fixedly connected with an anti-wear rubber ring, and each of the anti-wear rubber rings is in contact with the corresponding guide post (9).

6. The wind turbine hub according to claim 5, characterized in that, A locking block (12) is fixedly connected to the limiting ring (8), and a locking groove (13) is provided on the fixing ring (5). The locking block (12) cooperates with the locking groove (13).

Images