A yaw mechanism mounting structure for a wind power generator main machine cabin

Abstract

This utility model provides an installation structure for a yaw mechanism of a wind turbine nacelle. The structure includes a support pole, a nacelle, a mounting block, and a gear. In this installation structure, the gear is first mounted on the mounting block, which is then placed on top of the base plate, positioning the guide section inside the elongated groove. By moving the mounting block, the gear at the bottom of the block meshes with the gear disk. The parallelism between the gear's rotation axis and the gear disk's axis is checked. Adjusting the angle of the mounting block on the base plate ensures a stable meshing state between the gear and the gear disk. Finally, the mounting block is fixed to the base plate of the nacelle, completing the yaw mechanism installation. During installation, the gear angle can be adjusted to prevent misalignment between the gear and gear disk axes, which could affect their lifespan.

Description

Technical Field

[0001] This utility model belongs to the field of wind turbine technology, specifically relating to an installation structure for a yaw mechanism of a wind turbine nacelle. Background Technology

[0002] The nacelle of a wind turbine houses the fan and generator. The nacelle is then mounted on a pole, which in turn supports the wind turbine. However, in actual use, wind direction can change. To better utilize local wind energy, a yaw mechanism is typically added between the pole and the nacelle. This mechanism adjusts the angle of the nacelle. The yaw mechanism usually employs a gear and a gear plate meshing to rotate the nacelle.

[0003] However, the fan blade main shaft axis is tilted upwards at a certain angle relative to the horizontal direction to fully utilize wind energy. This results in the main nacelle being angled to the horizontal when mounted on the mast, while the gears in the yaw mechanism are typically mounted on the main nacelle, and the gear disc is fixed to the mast. Therefore, when installing gears on the main nacelle, the gear axis can easily be at an angle to the gear disc axis, affecting the service life of both the gears and the gear disc. Currently, in most main nacelles, the gear main shaft is directly installed inside the main nacelle. During assembly, it is difficult to adjust the gear position, easily leading to a misalignment between the gear axis and the gear disc axis, thus affecting the service life of the yaw mechanism. Utility Model Content

[0004] This utility model provides an installation structure for a yaw mechanism in a wind turbine nacelle, which aims to solve the problem in the prior art where the angle between the gear and the toothed disc is not easy to adjust during installation, thus affecting the service life of the yaw mechanism.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is: to provide an installation structure for the yaw mechanism of a wind turbine nacelle, comprising:

[0006] A pole, the top of which is fixedly mounted with a toothed disc;

[0007] The main engine compartment is rotatably mounted on the top of the upright, and the main engine compartment is rotatably mounted on the gear plate;

[0008] The mounting block is installed at the bottom of the main engine compartment. The bottom of the main engine compartment is provided with a base plate for installing the mounting block. The bottom of the mounting block has a protruding guide portion. The base plate is provided with an elongated groove that slides with the guide portion. The position of the main engine compartment on the upright is inclined upward along the length of the elongated groove.

[0009] A gear is rotatably mounted on the mounting block and located below the mounting block, and the gear meshes with the gear disc.

[0010] In one possible implementation, threaded holes are provided at each of the four corners of the mounting block, and the threaded holes penetrate the mounting block.

[0011] In one possible implementation, a rotating housing is fixedly mounted on the top of the mounting block, a rotating shaft is rotatably disposed inside the rotating housing, the gear is fixedly mounted on the rotating shaft, and a driving component for driving the rotating shaft to rotate is detachably mounted on the rotating housing.

[0012] In one possible implementation, the gear engages on the gear disk when the guide portion moves to the end of the elongated groove.

[0013] In one possible implementation, a support rod is threadedly connected inside the threaded hole on the mounting block, and the end of the support rod is a hemispherical structure.

[0014] In one possible implementation, the mounting block is further threadedly connected to a fastener for fixing the mounting block to the base plate, the fastener being disposed through the base plate.

[0015] In one possible implementation, the bottom of the shaft box is provided with a flange for fixing to the mounting block, and the mounting block is provided with a guide hole for sliding engagement with the flange.

[0016] In one possible implementation, a plurality of positioning holes are recessed on the sidewall of the guide hole, and a clamping pin for pressing the flange inside the guide hole is inserted into the plurality of positioning holes.

[0017] In one possible implementation, a brake disc is fixedly mounted on the bottom end of the gear sprocket, and a plurality of brakes cooperating with the brake disc are also mounted on the main engine compartment.

[0018] The solution shown in this application, compared with the prior art, features a vertical pole for fixing to the ground, with the pole's axis aligned vertically. A main unit compartment is mounted at the top of the pole, its tilt angle angled to the horizontal. An elongated groove is formed on the bottom plate of the main unit compartment, and a mounting block is installed at the top of this groove. A guide portion, slidably positioned inside the groove, is located at the bottom of the mounting block, allowing the mounting block to move only along the length of the groove. The guide portion can also rotate within the groove along its length, adjusting the mounting block's pitch angle. In this application, when installing a gear, the gear can be first installed onto the mounting block, and then the mounting block can be placed on top of the bottom plate, positioning the guide portion inside the elongated groove. By moving the mounting block, the gear at the bottom of the mounting block meshes with the gear disk, and the parallelism between the gear rotation shaft and the gear disk axis is checked. The angle of the mounting block on the base plate is adjusted to ensure a stable meshing state between the gear and the gear disk. Finally, the mounting block is fixed to the base plate of the main engine compartment to complete the installation of the yaw mechanism. During the installation process, the angle of the gear can be adjusted to avoid the gear and gear disk axes being misaligned, which would affect the service life of the gear and gear disk. Attached Figure Description

[0019] Figure 1 A schematic diagram of the installation structure of the yaw mechanism of the wind turbine nacelle provided in this embodiment of the utility model;

[0020] Figure 2 A schematic diagram of the installation structure of the shaft box provided in an embodiment of this utility model;

[0021] Figure 3 This is a schematic diagram of the fixing structure of the mounting block provided in an embodiment of the present utility model.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Upright pole; 11. Gear disc; 12. Brake disc; 2. Main engine compartment; 21. Gear; 22. Brake; 3. Mounting block; 31. Guide section; 4. Shaft box; 41. Rotating shaft; 42. Flange; 5. Drive component; 6. Support rod; 7. Fixing component; 8. Top pin. Detailed Implementation

[0024] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0025] Please refer to the following: Figures 1 to 3The yaw mechanism installation structure of the wind turbine nacelle 2 provided by this utility model is described below. The yaw mechanism installation structure of the wind turbine nacelle 2 includes a support pole 1, a nacelle 2, a mounting block 3, and a gear 21. A gear disk 11 is fixedly installed on the top of the support pole 1; the nacelle 2 is rotatably mounted on the top of the support pole 1 and on the gear disk 11; the mounting block 3 is installed on the bottom of the nacelle 2, and a base plate for mounting the mounting block 3 is provided at the bottom of the mounting block 3. A guide portion 31 protrudes from the bottom of the mounting block 3, and an elongated groove that slides with the guide portion 31 is provided on the base plate. The position of the nacelle 2 on the support pole 1 is inclined upward along the length of the elongated groove; the gear 21 is rotatably mounted on the mounting block 3 and located below the mounting block 3, and the gear 21 meshes with the gear disk 11.

[0026] The yaw mechanism installation structure of the wind turbine nacelle 2 provided in this embodiment, compared with the prior art, features a vertical pole 1 for fixing to the ground, with the pole's axis aligned vertically. The nacelle 2 is installed at the top of the pole 1, its tilt angle angled to the horizontal. An elongated groove is provided on the bottom plate of the nacelle 2, and a mounting block 3 is installed at the top of the groove. A guide portion 31, slidably disposed inside the groove, is located at the bottom of the mounting block 3, allowing the mounting block 3 to move only along the length of the groove. The guide portion 31 can also rotate within the groove along its length, thereby adjusting the pitch angle of the mounting block 3. In this application, when installing the gear 21, the gear 21 can be first installed onto the mounting block 3, and then the mounting block 3 can be placed on top of the bottom plate, positioning the guide portion 31 inside the elongated groove. By moving the position of the mounting block 3, the gear 21 at the bottom of the mounting block 3 is made to mesh with the gear disk 11. The parallelism between the rotation shaft 41 of the gear 21 and the axis of the gear disk 11 is checked. The angle of the mounting block 3 on the base plate is adjusted to ensure a stable meshing state between the gear 21 and the gear disk 11. Finally, the mounting block 3 is fixed to the base plate of the main engine compartment 2 to complete the installation of the yaw mechanism. During the installation process, the angle of the gear 21 can be adjusted to avoid the gear 21 and the gear disk 11 being out of parallel, which would affect the service life of the gear 21 and the gear disk 11.

[0027] Specifically, in this embodiment, the cross-section of the guide portion 31 is rectangular or elliptical. This prevents the guide portion 31 from rotating inside the elongated groove, allowing it to rotate only within the elongated groove along the pitch angle.

[0028] In some embodiments, the mounting block 3 described above may be as follows: Figure 2 The structure shown. See also Figure 2The mounting block 3 has threaded holes at all four corners, and these holes penetrate the mounting block 3. When the mounting block 3 is installed on the base plate, threaded holes are located on both sides of the elongated groove. To adjust the tilt angle of the mounting block 3, a screw or bolt can be inserted into the threaded hole and pass through it, so that the screw or bolt rests against the base plate. Through the support of the screw or bolt, the tilt angle of the mounting block 3 on the base plate can be adjusted, thereby adjusting the angle of the gear 21. After adjustment, the mounting block 3 is finally fixed to the base plate, completing the installation of the mounting block 3. The structure is simple and facilitates the adjustment of the tilt angle of the mounting block 3.

[0029] In some embodiments, the mounting block 3 described above may be as follows: Figure 1 , Figure 2 The structure shown. See also... Figure 1 , Figure 2 A rotating shaft box 4 is fixedly mounted on the top of the mounting block 3. A rotating shaft 41 is rotatably mounted inside the rotating shaft box 4. A gear 21 is fixedly mounted on the rotating shaft 41, and a drive component 5 for driving the rotating shaft 41 is detachably mounted on the rotating shaft box 4. The rotating shaft box 4 is detachably mounted on the top of the mounting block 3, and the rotating shaft 41 is rotatably mounted inside the rotating shaft box 4 via bearings. The gear 21 is fixedly mounted on the bottom end of the rotating shaft 41. When installing the gear 21, the rotating shaft box 4 can be first installed onto the mounting block 3 and then installed onto the base plate along with the mounting block 3. After adjusting the angle of the rotating shaft 41, the mounting block 3 is fixed onto the base plate. Finally, the drive component 5 is connected and installed onto the rotating shaft box 4.

[0030] Specifically, in this embodiment, after the mounting block 3 is positioned, it can be fixed to the base plate by welding. With the setting of the shaft box 4, the drive component 5 can be removed during the debugging process. On the one hand, it is more convenient to adjust the tilt angle of the rotating shaft 41, and on the other hand, it can avoid damage to the cables and some control components on the drive component 5, thereby improving the safety of the assembly process.

[0031] Specifically, in this embodiment, the driving component 5 is a synchronous motor, which drives the gear 21 to rotate. The gear 21 meshes with the gear disk 11, thereby allowing the main unit 2 to rotate relative to the upright 1 to adjust the position of the fan blades.

[0032] In some embodiments, the guide portion 31 may adopt the following... Figure 1 , Figure 3 The structure shown. See also... Figure 1 , Figure 3When the guide part 31 moves to the end of the elongated groove, the gear 21 meshes with the gear disk 11. The cross-section of the guide part 31 is elliptical, and the end of the elongated groove is located in an arc-shaped structure that matches the side of the guide part 31. When the guide part 31 moves to the end of the elongated groove, the gear 21 moves to a state of meshing with the gear disk 11. When the main engine compartment 2 rotates relative to the upright 1, the gear 21 and the gear disk 11 maintain a relatively stable meshing state, thus enabling the gear 21 to stably mesh with the gear disk 11. During the commissioning and installation process, the operator can insert the gear 21 into the elongated groove from one end, and then push the mounting block 3 along the length of the elongated groove until the guide part 31 on the mounting block 3 abuts against the end of the elongated groove. The mounting block 3 can be positioned by the limiting of the elongated groove, which facilitates on-site commissioning and installation.

[0033] In some embodiments, the mounting block 3 described above may be as follows: Figure 2 The structure shown. See also Figure 2 A support rod 6 is threaded into the threaded hole on the mounting block 3. The end of the support rod 6 is hemispherical. The outer side of the support rod 6 is externally threaded, and the end of the support rod 6 is hemispherical. When the support rod 6 is rotated, the hemispherical structure can be pressed against the bottom plate, so that the end of the hemispherical structure is pressed against the bottom plate, thereby facilitating the adjustment of the angle of the mounting block 3 by rotating the support rod 6. At the same time, during the rotation of the mounting block 3, the arc surface of the hemispherical structure can guide the replacement of the support point on the support rod 6, facilitating the adjustment of the rotation angle of the mounting block 3.

[0034] In some embodiments, the mounting block 3 described above may be as follows: Figure 3 The structure shown. See also Figure 3 The mounting block 3 is also threadedly connected to a fixing member 7 for securing the mounting block 3 to the base plate. The fixing member 7 penetrates the base plate. Wing plates protrude from both sides of the middle of the mounting block 3 for securing it to the base plate. When the mounting block 3 is installed on the base plate, the two wing plates on the mounting block 3 are located on both sides of the elongated groove. The fixing member 7 is threadedly connected to the wing plates, and an elastic washer is provided between the fixing member 7 and the base plate. After adjusting the position of the mounting block 3, it can be secured to the base plate using the fixing member 7.

[0035] Specifically, in this embodiment, after the fastener 7 fixes the mounting block 3 to the base plate, the mounting block 3 can be welded to the base plate around its perimeter, thereby further enhancing the stability of the connection between the mounting block 3 and the base plate.

[0036] In some embodiments, the aforementioned shaft housing 4 may be adopted as follows: Figure 1 , Figure 3 The structure shown. See also... Figure 1 , Figure 3The bottom of the shaft housing 4 is provided with a flange 42 for fixing to the mounting block 3. The mounting block 3 is provided with a guide hole that slides with the flange 42. The flange 42 is fixedly installed at the bottom of the shaft housing 4, and the guide hole for installing the flange 42 is provided on the mounting block 3. The outer wall of the flange 42 slides with the guide hole. By placing the flange 42 into the guide hole, the relative position of the shaft housing 4 and the mounting block 3 can be guided, and the stability of the position of the shaft housing 4 on the mounting block 3 can be improved.

[0037] Specifically, in this embodiment, a threaded hole for fixing the flange 42 is provided at the bottom of the guide hole.

[0038] In some embodiments, the mounting block 3 described above may be as follows: Figure 3 The structure shown. See also Figure 3 Multiple positioning holes are recessed on the side wall of the guide hole, and a clamping pin 8 is inserted into each positioning hole to tighten the flange 42 inside the guide hole. The positioning holes are located on the side of the guide hole and intersect with it. The clamping pin 8 is made of copper to avoid damaging the flange 42. After the clamping pin 8 is installed inside the positioning hole, its outer side wall is located inside the guide hole and abuts against the outer side wall of the flange 42, thereby effectively fixing the flange 42 into the guide hole.

[0039] Specifically, in this embodiment, the outer diameter of the flange 42 is not very accurate during production and processing. Therefore, when processing the guide hole on the mounting block 3, the size of the guide hole can be increased to facilitate matching and installing the flange 42. Then, the flange 42 is fixed to the inside of the guide hole by the tightening pin 8.

[0040] In some embodiments, the gear disk 11 may be adopted as follows: Figure 1 The structure shown. See also Figure 1 A brake disc 12 is fixedly mounted on the bottom end of the gear disc 11, and multiple brakes 22 that cooperate with the brake disc 12 are also installed on the main engine compartment 2. The brake disc 12 is coaxially arranged with the gear disc 11, and extends to the outer side of the gear disc 11. Multiple brakes 22 are installed on the main engine compartment 2, and the multiple brakes 22 are evenly spaced. When the main engine compartment 2 rotates on the upright 1, when it rotates to the indicated position, the brakes 22 can be used to brake, which improves the accuracy of the adjustment position and reduces the force between the gear disc 11 and the gear 21, thereby increasing the service life.

[0041] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A yaw mechanism installation structure for a wind turbine nacelle, characterized in that, include: A pole (1), the top of which is fixedly mounted with a toothed disc (11); The main engine compartment (2) is rotatably mounted on the top of the upright (1), and the main engine compartment (2) is rotatably mounted on the gear plate (11); The mounting block (3) is installed at the bottom of the main engine compartment (2). The bottom of the main engine compartment (2) is provided with a base plate for mounting the mounting block (3). The bottom of the mounting block (3) is provided with a guide part (31). The base plate is provided with an elongated groove that slides with the guide part (31). The position of the main engine compartment (2) on the upright (1) is inclined upward along the length direction of the elongated groove. The gear (21) is rotatably mounted on the mounting block (3) and located below the mounting block (3). The gear (21) meshes with the gear disc (11).

2. The installation structure of the yaw mechanism of the wind turbine nacelle as described in claim 1, characterized in that, The mounting block (3) has threaded holes at all four corners, and the threaded holes penetrate the mounting block (3).

3. The installation structure of the yaw mechanism of the wind turbine nacelle as described in claim 1, characterized in that, A rotating shaft box (4) is fixedly installed on the top of the mounting block (3). A rotating shaft (41) is rotatably installed inside the rotating shaft box (4). The gear (21) is fixedly installed on the rotating shaft (41). A driving component (5) for driving the rotating shaft (41) to rotate is detachably installed on the rotating shaft box (4).

4. The installation structure of the yaw mechanism of the wind turbine nacelle as described in claim 1, characterized in that, When the guide (31) moves to the end of the elongated groove, the gear (21) meshes with the gear disc (11).

5. The installation structure of the yaw mechanism of the wind turbine nacelle as described in claim 2, characterized in that, The mounting block (3) has a threaded hole with a support rod (6) inside, and the end of the support rod (6) is a hemispherical structure.

6. The installation structure of the yaw mechanism of the wind turbine nacelle as described in claim 1, characterized in that, The mounting block (3) is also threaded with a fastener (7) for fixing the mounting block (3) to the base plate, and the fastener (7) is disposed through the base plate.

7. The installation structure of the yaw mechanism of the wind turbine nacelle as described in claim 3, characterized in that, The bottom of the shaft box (4) is provided with a flange (42) for fixing to the mounting block (3), and the mounting block (3) is provided with a guide hole that slides with the flange (42).

8. The installation structure of the yaw mechanism of the wind turbine nacelle as described in claim 7, characterized in that, The guide hole has multiple positioning holes recessed on its side wall, and a clamping pin (8) for clamping the flange (42) inside the guide hole is inserted inside the multiple positioning holes.

9. The installation structure of the yaw mechanism of the wind turbine nacelle as described in claim 1, characterized in that, A brake disc (12) is fixedly installed at the bottom of the gear disc (11), and a plurality of brakes (22) that cooperate with the brake disc (12) are also installed on the main engine compartment (2).

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