A wind turbine main frame and its manufacturing process

Abstract

This invention discloses a wind turbine main frame and its manufacturing process. The main frame includes a main frame base plate, which includes an upper panel and a lower panel. The upper and lower panels are connected by several stiffeners. Movable yaw equipment mounting brackets are correspondingly provided on the upper and lower panels. A support plate is connected to the upper panel via a hydraulic cylinder. A buffer column is provided between the support plate and the upper panel. A vertical support plate is provided on the support plate, and a movable mounting bracket is provided on the vertical support plate. This design can reduce the overall weight and better adjust the installation of yaw equipment and main shaft fixing devices.

Description

Technical Field

[0001] This invention relates to the field of wind turbine frame, and more specifically to a wind turbine frame and its manufacturing process. Background Technology

[0002] Horizontal wind turbine gantry frames are mainly used to support and install the main shaft support structure, gearbox, generator, and other structures. However, most existing horizontal wind turbine gantry frames adopt a flat plate structure, which has a relatively simple function. Moreover, they mostly use relatively thick steel plates, which increases the weight of the entire nacelle. They cannot be adjusted up or down, do not utilize the connection between the wind turbine main shaft and the impeller, and the upper devices cannot be moved after installation, making them inconvenient to adjust and use. Summary of the Invention

[0003] To address the aforementioned technical shortcomings, the purpose of this invention is to provide a wind turbine mainframe and its manufacturing process.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A wind turbine frame includes a base plate, which comprises an upper panel and a lower panel connected by several stiffeners. Movable yaw device mounting brackets are correspondingly provided on the upper and lower panels, and the upper and lower panels are welded and fixed around their perimeter by U-shaped steel brackets. A support plate is connected to the upper panel via a hydraulic cylinder, and a buffer column is provided between the support plate and the upper panel. A vertical support plate is provided on the support plate, and a movable mounting bracket is provided on the vertical support plate.

[0006] A further improvement of the present invention is that the stiffening plates are arranged in a grid pattern.

[0007] A further improvement of the present invention is that the upper panel and the lower panel are provided with a long slot hole 1 corresponding to the yaw device, and long slot holes 2 are provided on both sides of the long slot hole 1. The yaw device mounting bracket includes a yaw bracket plate. The yaw bracket plate is provided with a through hole 1 corresponding to the yaw device. A plurality of mounting holes 1 for mounting the yaw device are provided on the outer periphery of the through hole 1. The yaw bracket plate is provided with slidable fixing bolts corresponding to the long slot holes 2.

[0008] A further improvement of the present invention is that the buffer column includes a bottom buffer column welded to the upper panel and an upper buffer column welded to the support plate. The bottom buffer column is provided with a buffer groove corresponding to the upper buffer column, and the upper buffer column is sleeved with a buffer spring welded to the upper panel.

[0009] A further improvement of the present invention is that a slide rail with a groove is welded onto the vertical support plate.

[0010] A further improvement of the present invention is that the slide rail is provided with a plurality of bolt holes for fixing to the mounting bracket.

[0011] A further improvement of the present invention is that the mounting bracket is provided with a plurality of mounting holes.

[0012] A manufacturing process for a wind turbine mainframe includes the following steps:

[0013] (1) Machining the top panel, bottom panel, and corresponding slide rails;

[0014] (2) After positioning the slide groove, weld the spiral steel bracket and stiffening plate intermittently, and avoid welding the spiral steel bracket and stiffening plate to the corresponding slide groove.

[0015] (3) Position and install the hydraulic cylinder and buffer column;

[0016] (4) Weld and fix the vertical support plate to the support plate;

[0017] (5) Fix the support plate, hydraulic cylinder, and buffer column;

[0018] (6) Finally, fix the mounting bracket and the yaw equipment mounting bracket.

[0019] The beneficial effects of this invention are as follows:

[0020] This invention provides a wind turbine main frame and its manufacturing process. The base plate adopts a ribbed composite structure, which helps to reduce the overall weight. It also features a hydraulic cylinder, allowing for height adjustment of the support plate. This facilitates easier adjustment during the installation of the wind turbine main shaft and impeller. The hydraulic cylinder and buffer column increase the support strength of the support plate, and the buffer column provides excellent cushioning. The adjustable mounting bracket can be adjusted as needed, allowing for better adjustment of the installation positions of the main shaft support structure, gearbox, generator, and other structures, resulting in better performance and easier disassembly and maintenance. The adjustable yaw equipment mounting bracket not only allows for better adjustment of the yaw equipment's installation position but also allows for the addition of yaw equipment as needed after installation. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the arrangement of the yaw device mounting bracket of the present invention;

[0024] Figure 3 This is a schematic diagram showing the connection between the vertical support plate and the mounting bracket of the present invention;

[0025] Figure 4 This is a schematic diagram of the stiffener arrangement of the present invention.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Main frame base plate; 101. Top panel; 102. Bottom panel; 103. U-shaped steel bracket; 104. Long slot hole one; 105. Long slot hole two; 2. Hydraulic cylinder; 3. Yaw equipment mounting bracket; 301. Yaw bracket plate; 302. Through hole one; 303. Mounting hole; 304. Fixing bolt; 4. Support plate; 5. Buffer column; 501. Bottom buffer column; 502. Upper buffer column; 503. Buffer groove; 504. Buffer spring; 6. Vertical support plate; 601. Slide rail; 602. Bolt hole; 7. Mounting bracket; 701. Mounting hole two. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] like Figures 1 to 4 As shown, this embodiment provides a wind turbine main frame, which includes a main frame base plate 1. The main frame base plate 1 includes an upper panel 101 and a lower panel 102. The upper panel 101 and the lower panel 102 are connected by a plurality of stiffeners. Movable yaw equipment mounting brackets 3 are correspondingly provided on the upper panel 101 and the lower panel 102. The upper panel 101 is connected to a support plate 4 by a hydraulic cylinder 2. A buffer column 5 is provided between the support plate 4 and the upper panel 101. A vertical support plate 6 is provided on the support plate 4. A movable mounting bracket 7 is provided on the vertical support plate 6.

[0030] In this embodiment, the hydraulic cylinder 2 is electrically controlled by existing control equipment in the engine room, which is well known to those skilled in the art and will not be described in detail here.

[0031] The upper panel 101 and lower panel 102 are welded and fixed around their perimeter by a U-shaped steel bracket 103, and the stiffeners are arranged in a grid pattern. The upper panel 101 and lower panel 102 are provided with elongated slots 104 corresponding to the yaw device, and elongated slots 105 are provided on both sides of the elongated slots 104. The yaw device mounting bracket 3 includes a yaw bracket plate 301, which is provided with through holes 302 corresponding to the yaw device. Several mounting holes 303 for mounting the yaw device are provided around the outer periphery of the through holes 302. The top of the yaw device passes through the through holes 302 and is fixed to the mounting holes 303. The yaw bracket plate 301 is provided with slidable fixing bolts 304 corresponding to the elongated slots 105, and each fixing bolt 304 has two nuts.

[0032] The buffer column 5 includes a bottom buffer column 501 welded to the upper panel 101 and an upper buffer column 502 welded to the support plate 4. The bottom buffer column 501 is provided with a buffer groove 503 corresponding to the upper buffer column 502. The upper buffer column 502 is sleeved with a buffer spring 504 welded to the upper panel 101.

[0033] The vertical support plate 6 is welded with a slide rail 601 with a sliding groove. The slide rail 601 is provided with a plurality of bolt holes 602 for fixing to the mounting bracket 7. The mounting bracket 7 is provided with a plurality of mounting holes 701. In this embodiment, the mounting holes 701 are mainly used to install the main shaft support structure, gearbox, generator and other structures.

[0034] In this embodiment, the main frame base plate 1, upper panel 101, lower panel 102, U-shaped steel bracket 103, long slot hole one 104, long slot hole two 105, hydraulic cylinder 2, yaw equipment mounting bracket 3, yaw bracket plate 301, through hole one 302, mounting hole one 303, fixing bolt 304, support plate 4, buffer column 5, bottom buffer column 501, upper buffer column 502, buffer groove 503, buffer spring 504, vertical support plate 6, slide rail 601, bolt hole 602, mounting bracket 7, mounting hole two 701, yaw equipment, main shaft support structure, gearbox, generator, engine room, control equipment, etc., all adopt existing products or structures well known to those skilled in the art, and the connection methods between them also adopt existing connection methods well known to those skilled in the art, which will not be described in detail here.

[0035] This embodiment also provides a manufacturing process for the above-mentioned novel wind turbine frame, characterized by including the following steps:

[0036] 1. Machining the upper panel 101, lower panel 102, and corresponding slide grooves;

[0037] 2. After positioning the slide groove, weld the U-shaped steel bracket 103 and the stiffening plate. The stiffening plate is arranged in a grid pattern and welded intermittently. The inner corner of the U-shaped steel bracket 103 is welded with triangular stiffening plate. The welding of the U-shaped steel bracket 103 and the stiffening plate avoids the corresponding slide groove.

[0038] 3. Position and install the hydraulic cylinder and buffer column;

[0039] 4. Weld and fix the vertical support plate 6 to the support plate 4;

[0040] 5. Fix the support plate 4 to the hydraulic cylinder and the buffer column;

[0041] 6. Fixed mounting bracket 7. Yaw device mounting bracket 3.

[0042] The installation and positioning requirements related to the above manufacturing process adopt existing technical requirements well known to those skilled in the art, and will not be described in detail here.

[0043] In practical use: After installing the main shaft support structure, gearbox, generator, and other structures using the mounting brackets, if there is a deviation between the height of the impeller's main shaft and the center of the main shaft support structure during the hoisting and installation of the impeller, it is necessary to adjust the center height of the main shaft support structure using a hydraulic cylinder to align it with the impeller's main shaft for better installation. When installing the yaw device, the installation position of the yaw device can be adjusted by moving the position of the yaw device mounting bracket 3 within the long slot. The number of yaw device mounting brackets 3 can be increased as needed to add more yaw devices. If it is necessary to adjust the position of the main shaft support structure, gearbox, generator, and other structures, simply adjust the position of the mounting bracket 7.

[0044] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A wind power main frame, characterized in that, The utility model provides a kind of mainframe bottom plate, the mainframe bottom plate includes upper panel (101) and lower panel (102), and the upper panel (101) and lower panel (102) are connected by several webs between the upper panel (101) and lower panel (102), and the upper panel (101) and lower panel (102) are correspondingly provided with movable yaw device installation support (3) on the upper panel (101) and lower panel (102), and the upper panel (101) and lower panel (102) are welded and fixed by bent steel support (103) around, and the upper panel (101) is connected with support plate (4) by hydraulic cylinder (2), and buffer column (5) is arranged between the support plate (4) and upper panel (101), and vertical support plate (6) is arranged on the support plate (4), and movable installation support (7) is arranged on the vertical support plate (6); Corresponding long slot hole one (104) is arranged on the upper panel (101) and lower panel (102), and long slot hole two (105) is arranged on the both sides of the long slot hole one (104), and the yaw device installation support (3) includes yaw support plate (301), and the yaw support plate (301) is provided with through hole one (302) corresponding to yaw device, and a plurality of mounting holes one (303) for mounting yaw device are arranged on the outer periphery of the through hole one (302), and the position of the yaw device installation support (3) is moved in the long slot hole two (105) to adjust the mounting position of the yaw device; The vertical support plate (6) is welded with slide rail (601) with sliding groove.

2. A wind power main frame according to claim 1, characterized in that, The web is arranged in the shape of a cross.

3. The wind power main frame according to claim 1, characterized in that, The buffer column (5) includes bottom buffer column (501) welded with the upper panel (101) and upper buffer column (502) welded with the support plate (4), the bottom buffer column (501) is provided with buffer groove (503) corresponding to the upper buffer column (502), and the outer part of the upper buffer column (502) is provided with buffer spring (504) welded with the upper panel (101).

4. The wind power main frame according to claim 1, characterized in that, A plurality of bolt holes (602) for fixing installation support (7) are arranged on the sliding rail (601).

5. The wind power main frame according to claim 1, characterized in that, A plurality of mounting holes two (701) are arranged on the installation support (7).

6. A manufacturing process of a wind power main frame as claimed in any one of claims 1-5, characterized in that, It includes the following steps: (1) process upper panel (101), lower panel (102) and corresponding sliding groove; (2) after positioning the sliding groove, weld the bent steel support (103) and the web, intermittent welding, weld the bent steel support (103) and the web away from the corresponding sliding groove; (3) position the hydraulic cylinder (2) and the buffer column (5); (4) weld and fix the vertical support plate (6) and the support plate (4); (5) fix the support plate (4), the hydraulic cylinder (2) and the buffer column (5); (6) finally fix the installation support (7) and the yaw device installation support (3).

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