Main frame of wind turbine generator

Abstract

The utility model provides a wind turbine generator main frame which comprises a main frame body, a bearing assembly is installed on the main frame body, a limiting plate is fixedly connected with an inner cavity of the main frame body, a sliding plate is connected with the limiting plate in a sliding mode, a vertical rod is inserted into a limiting hole of the sliding plate, and the vertical rod is connected with the bearing assembly in a sliding mode. The bottom end of the storage plate is fixedly connected with the vertical rod, and the plugging cover is fixedly connected with the end, away from the main rack body, of the sliding plate. The sliding plate drives the storage plate to move out of a cavity of the main rack body through the vertical rod, and the sliding plate drives the plugging cover to be separated from the main rack body; when an external unit is installed on the storage plate, through the open-close type design of the storage plate, when the external unit is installed, the storage plate is moved out of the cavity of the main machine frame body, the installation space of the external unit on the storage plate is expanded, and adjustment of the installation position of the unit and assembly operation of workers are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of main frames, in particular to a main frame of a wind turbine generator set. Background Art

[0002] A wind turbine is a system that converts wind energy into electrical energy. It is usually composed of components such as a wind rotor, a generator, and a tower. The main frame of a wind turbine is one of the most critical and complex components in a wind turbine. The main frame is not only the basic component of the wind turbine nacelle, but also supports and connects various components and is an important component that carries the wind turbine load.

[0003] Among them, the main frame is fixedly connected to the inner cavity of the wind turbine nacelle, and the unit needs to be assembled inside the wind turbine nacelle and the main frame. Due to the limitation of the space in the wind turbine nacelle, the installation position adjustment of the unit and the assembly operation of the staff are affected. Utility Model Content

[0004] The purpose of the utility model is to provide a main frame of a wind turbine generator set, which solves the problem that the generator set needs to be assembled with the main frame inside the wind turbine cabin, which is limited by the space in the wind turbine cabin, affecting the installation position adjustment of the generator set and the assembly operation of the staff.

[0005] The utility model provides a main frame of a wind turbine generator set, comprising a main frame body, a bearing assembly mounted on the main frame body, and the bearing assembly is moved outside the cavity of the main frame body for assembling an external unit;

[0006] The bearing assembly includes a limit plate, a slide plate, a vertical rod, a storage plate, a buffer member, a driving member and a blocking cover;

[0007] The limiting plate is fixedly connected to the inner cavity of the main frame, the slide is slidably connected to the limiting plate, the vertical rod is inserted into the limiting hole of the slide, the bottom end of the storage plate is fixedly connected to the vertical rod, the storage plate is used to assemble an external unit, the buffer is used to buffer the impact force applied to the storage plate, the driving member is used to drive the slide to move, the blocking cover is fixedly connected to one end of the slide away from the main frame, and the blocking cover is used to block the tail end of the main frame.

[0008] Preferably, the driving member includes a fixing plate, a transmission shaft, a slider and a motor;

[0009] The fixed plate is fixedly connected to the inner cavity of the main frame body, the transmission shaft is connected to the fixed plate through a bearing, the slider is connected to the internal thread of the transmission shaft, the top of the slider is fixedly connected to the slide plate, and the output end of the motor is connected to the transmission shaft.

[0010] Preferably, the buffer member includes an elastic member and a shock absorbing block;

[0011] The top end of the elastic member is fixedly connected to the storage plate, the shock absorbing block is fixedly connected to the bottom end of the elastic member, and the bottom end of the shock absorbing block is fixedly connected to the slide plate.

[0012] Preferably, a packaging component is installed on the main frame, and the packaging component is used to seal the gap between the main frame and the sealing cover.

[0013] The packaging assembly includes a strip plate, a collar, a telescopic member and a connecting member;

[0014] The bottom end of the strip plate is fixedly connected to the main frame, the collar is slidably connected to the strip plate, the cavity of the collar is plug-connected to the main frame, the telescopic member is used to drive the collar to move, and the telescopic member is connected to the main frame through the connecting member.

[0015] Preferably, the connecting member includes a clamp and a positioning pin;

[0016] The clamp is fixedly connected to the telescopic member, and the clamp is connected to the main frame through the positioning pin.

[0017] Preferably, a sealing ring is fixedly connected to the inner wall of the collar, and the sealing ring is used to increase the sealing between the collar and the main frame.

[0018] Preferably, the telescopic member is a cylinder.

[0019] Preferably, a mesh plate is fixedly connected to the storage plate, and the mesh plate is used for dissipating heat from the bottom of the external unit.

[0020] Preferably, the elastic member is a compression spring.

[0021] Preferably, the blocking cover is processed into a hemispherical shape.

[0022] The utility model provides a main frame of a wind turbine generator set:

[0023] Through the coordinated use of the limit plate, slide plate, vertical rod, storage plate, buffer, driving member, blocking cover, etc., the slide plate is driven to move laterally along the outer wall of the limit plate under the action of the driving member, the slide plate drives the storage plate to move out of the cavity of the main frame through the vertical rod, and the slide plate drives the blocking cover and the main frame to separate. When the external unit is installed on the storage plate, the buffer member cushions the impact force of the external unit on the storage plate. After the slide plate is reset on the outer wall of the limit plate, the blocking cover closes the main frame. Through the opening and closing design of the storage plate, when installing the external unit, the storage plate is moved outside the cavity of the main frame, expanding the installation space of the external unit on the storage plate, facilitating the installation position adjustment of the unit and the assembly operation of the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 This is a schematic diagram of the structure of the utility model;

[0026] Figure 2 This is a cross-sectional view of the main frame of the present utility model;

[0027] Figure 3 This is a schematic diagram of the structure of the fixed plate, transmission shaft, slider, and motor in the utility model;

[0028] Figure 4 This is an exploded view of the elastic member, shock-absorbing block, slide plate and storage plate in the present invention;

[0029] Figure 5 This is a structural diagram of the strip plate, sleeve ring, sealing ring and telescopic member in the utility model.

[0030] Description of reference numerals:

[0031] 1-main frame, 2-bearing assembly, 21-limiting plate, 22-slide plate, 23-vertical rod, 24-storage plate, 241-mesh plate, 25-buffer, 251-elastic member, 252-shock absorber, 26-driving member, 261-fixing plate, 262-transmission shaft, 263-slider, 264-motor, 27-sealing cover, 3-packaging assembly, 31-strip plate, 32-ring, 321-sealing ring, 33-telescopic member, 34-connecting member, 341-clamp, 342-locating pin. DETAILED DESCRIPTION

[0032] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the embodiments. Obviously, the embodiments described are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] In the description of the present invention, it should be understood that the terms "center" - "longitudinal" - "transverse" - "length" - "width" - "thickness" - "up" - "down" - "front" - "back" - "left" - "right" - "vertical" - "horizontal" - "top" - "bottom" - "inside" - "outside" - "clockwise" - "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0034] In the description of the present invention, it should be understood that the terms "first"-"second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first"-"second" may explicitly or implicitly include one or more of the said features. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed"-"connected"-"connected" 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 or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be a communication between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0035] In this embodiment, if Figure 1 and Figure 2As shown, a main frame of a wind turbine generator set includes a main frame body 1, and a bearing assembly 2 is installed on the main frame body 1. The bearing assembly 2 moves to the outside of the cavity of the main frame body 1 for assembling an external unit. The bearing assembly 2 includes a limit plate 21, a slide plate 22, a vertical rod 23, a storage plate 24, a buffer 25, a driving member 26 and a blocking cover 27. The limit plate 21 is fixedly connected to the inner cavity of the main frame body 1, the slide plate 22 is slidably connected to the limit plate 21, the vertical rod 23 is inserted into the limiting hole of the slide plate 22, the bottom end of the storage plate 24 is fixedly connected to the vertical rod 23, the storage plate 24 is used to assemble an external unit, the buffer 25 is used to buffer the impact force exerted on the storage plate 24, the driving member 26 is used to drive the slide plate 22 to move, the blocking cover 27 is fixedly connected to the end of the slide plate 22 away from the main frame body 1, and the blocking cover 27 is used to block the tail end of the main frame body 1.

[0036] As a result, under the action of the driving member 26, the slide plate 22 is driven to move laterally along the outer wall of the limit plate 21, and the slide plate 22 drives the storage plate 24 to move through the vertical rod 23. At the same time, the slide plate 22 drives the blocking cover 27 to separate from the main frame 1. When the external unit is installed on the storage plate 24, the buffer member 25 buffers the impact force of the external unit on the storage plate 24. After the slide plate 22 is reset on the outer wall of the limit plate 21, the blocking cover 27 closes the main frame 1. Through the opening and closing design of the storage plate 24, the installation space of the external unit on the storage plate 24 is expanded.

[0037] Specifically, one side of the limit plate 21 is fixedly connected to the main frame body 1, and the other side of the limit plate 21 is slidably connected to the slide plate 22. A slide groove that is compatible with the limit plate 21 is processed in the slide plate 22. Four vertical rods 23 are provided, and four through holes that are compatible with the vertical rods 23 are processed in the slide plate 22. The storage plate 24 is used to install an external unit, and the blocking cover 27 is used to close the tail end of the main frame body 1.

[0038] In some embodiments, as Figure 3 As shown, the driving member 26 includes a fixed plate 261, a transmission shaft 262, a slider 263 and a motor 264. The fixed plate 261 is fixedly connected to the inner cavity of the main frame body 1, the transmission shaft 262 is connected to the fixed plate 261 through a bearing, the slider 263 is connected to the transmission shaft 262 through an internal thread, the top of the slider 263 is fixedly connected to the slide plate 22, and the output end of the motor 264 is connected to the transmission shaft 262.

[0039] Specifically, the fixed plate 261 and the limiting plate 21 are arranged in parallel, the transmission shaft 262 rotates in the fixed plate 261 through a bearing, the output end of the motor 264 is connected to the transmission shaft 262 through a coupling, and the slider 263 is used to drive the slide plate 22 to move;

[0040] In addition, under the premise of pushing the slide plate 22 to move laterally on the outer wall of the limiting plate 21, the driving member 26 can be replaced with other reciprocating structures.

[0041] In some embodiments, as Figure 4 As shown, the buffer member 25 includes an elastic member 251 and a shock absorbing block 252. The top end of the elastic member 251 is fixedly connected to the storage plate 24, the shock absorbing block 252 is fixedly connected to the bottom end of the elastic member 251, and the bottom end of the shock absorbing block 252 is fixedly connected to the slide plate 22.

[0042] Specifically, four groups of shock-absorbing blocks 252 and elastic members 251 are provided and distributed on the top of the slide plate 22. The shock-absorbing blocks 252 are made of rubber material, and the elastic members 251 are compression springs.

[0043] For example, when the storage plate 24 is subjected to downward pressure, the shock absorbing block 252 and the elastic member 251 are deformed, thereby buffering the impact force on the storage plate 24, and the weight of the unit is greater than the elastic potential energy of the compression spring.

[0044] In some embodiments, as Figure 5 As shown, a packaging component 3 is installed on the main frame 1, and the packaging component 3 is used to seal the gap between the main frame 1 and the blocking cover 27. The packaging component 3 includes a strip plate 31, a ring 32, a telescopic member 33 and a connecting member 34. The bottom end of the strip plate 31 is fixedly connected to the main frame 1, the ring 32 is slidably connected to the strip plate 31, the cavity of the ring 32 is plugged into the main frame 1, and the telescopic member 33 is used to drive the ring 32 to move. The telescopic member 33 is connected to the main frame 1 through the connecting member 34.

[0045] Specifically, the strip plate 31 is used to constrain the direction of movement of the ring 32, and the ring 32 is used to seal the gap between the main frame 1 and the sealing cover 27. A sliding groove that is compatible with the strip plate 31 is processed in the ring 32, and the telescopic member 33 provides power for the movement of the ring 32. The connecting member 34 is used to fix the use position of the telescopic member 33.

[0046] In some embodiments, as Figure 5 As shown, the connecting member 34 includes a clamp 341 and a positioning pin 342 . The clamp 341 is fixedly connected to the telescopic member 33 , and the clamp 341 is connected to the main frame body 1 via the positioning pin 342 .

[0047] The clamp 341 is used to half-wrap the telescopic member 33. The outer wall of the positioning pin 342 is processed with threads. The positioning pin 342 fixes the use position of the clamp 341. In addition, other connection methods can also be used to fix the telescopic member 33 and the main frame body 1.

[0048] In some embodiments, as Figure 5As shown, a sealing ring 321 is fixedly connected to the inner wall of the collar 32 , and the sealing ring 321 is used to increase the sealing between the collar 32 and the main frame 1 .

[0049] The sealing ring 321 is made of a plastic rubber material and is located on the inner wall of the collar 32 .

[0050] In some embodiments, as Figure 5 As shown, the telescopic member 33 is a cylinder.

[0051] The telescopic member 33 is designed as a cylinder to facilitate pushing the ring 32 to move.

[0052] In some embodiments, as Figure 3 As shown, a mesh plate 241 is fixedly connected to the storage plate 24, and the mesh plate 241 is used to dissipate heat from the bottom of the external unit.

[0053] There is a gap in the mesh plate 241. When the external unit is installed on the storage plate 24, the mesh plate 241 facilitates heat dissipation at the bottom of the external unit.

[0054] In some embodiments, as Figure 4 As shown, the elastic member 251 is a compression spring.

[0055] Specifically, the elastic member 251 is designed as a compression spring, and uses the elastic potential energy of the compression spring to buffer the impact force exerted on the storage plate 24.

[0056] In some embodiments, as Figure 2 As shown, the blocking cover 27 is processed into a hemispherical shape.

[0057] The blocking cover 27 is designed to be hemispherical to reduce the wind resistance at the rear of the main frame 1 and facilitate air flow.

[0058] The working principle of this application is described below with a preferred embodiment:

[0059] Start the motor 264, which drives the transmission shaft 262 to rotate in the fixed plate 261 through the coupling. The slider 263 moves laterally along the outer wall of the transmission shaft 262, and then the slider 263 drives the slide plate 22 to move laterally along the outer wall of the limit plate 21. The slide plate 22 drives the storage plate 24 to move through the vertical rod 23. At the same time, the slide plate 22 drives the blocking cover 27 to separate from the main frame 1. When the external unit is installed on the storage plate 24, the storage plate 24 drives the vertical rod 23 to move downward in the through hole of the slide plate 22. The elastic member 251 and the shock-absorbing block 252 are deformed downward, thereby buffering the impact force of the external unit on the storage plate 24. The motor 264 is started to reverse, and the slide plate 22 is reset on the outer wall of the limit plate 21, driving the blocking cover 27 to seal the main frame 1. Then, the telescopic member 33 is started. The output end of the telescopic member 33 drives the collar 32 to move laterally along the outer wall of the strip plate 31. The collar 32 drives the sealing ring 321 to the gap between the main frame 1 and the blocking cover 27, thereby improving the sealing between the main frame 1 and the blocking cover 27.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A main frame of a wind turbine generator system, comprising a main frame body (1), characterized in that: A bearing assembly (2) is installed on the main frame (1), and the bearing assembly (2) is moved outside the cavity of the main frame (1) to assemble an external unit; The bearing assembly (2) comprises a limiting plate (21), a slide plate (22), a vertical rod (23), a storage plate (24), a buffer member (25), a driving member (26) and a blocking cover (27); The limiting plate (21) is fixedly connected to the inner cavity of the main frame (1), the slide (22) is slidably connected to the limiting plate (21), the vertical rod (23) is inserted into the limiting hole of the slide (22), the bottom end of the storage plate (24) is fixedly connected to the vertical rod (23), the storage plate (24) is used to assemble an external unit, the buffer (25) is used to buffer the impact force applied to the storage plate (24), the driving member (26) is used to drive the slide (22) to move, the blocking cover (27) is fixedly connected to one end of the slide (22) away from the main frame (1), and the blocking cover (27) is used to block the tail end of the main frame (1).

2. A wind turbine main frame according to claim 1, characterized in that: The driving member (26) includes a fixing plate (261), a transmission shaft (262), a slider (263) and a motor (264); The fixed plate (261) is fixedly connected to the inner cavity of the main frame body (1); the transmission shaft (262) is connected to the fixed plate (261) via a bearing; the slider (263) is internally threadedly connected to the transmission shaft (262); the top end of the slider (263) is fixedly connected to the slide plate (22); and the output end of the motor (264) is connected to the transmission shaft (262).

3. A wind turbine main frame according to claim 1, characterized in that: The buffer member (25) includes an elastic member (251) and a shock absorbing block (252); The top end of the elastic member (251) is fixedly connected to the storage plate (24), the shock absorbing block (252) is fixedly connected to the bottom end of the elastic member (251), and the bottom end of the shock absorbing block (252) is fixedly connected to the slide plate (22).

4. A wind turbine main frame according to claim 1, characterized in that: A packaging component (3) is installed on the main frame (1), and the packaging component (3) is used to seal the gap between the main frame (1) and the sealing cover (27). The packaging assembly (3) comprises a strip plate (31), a collar (32), a telescopic member (33) and a connecting member (34); The bottom end of the strip plate (31) is fixedly connected to the main frame (1), the collar (32) is slidably connected to the strip plate (31), the cavity of the collar (32) is plug-connected to the main frame (1), the telescopic member (33) is used to drive the collar (32) to move, and the telescopic member (33) is connected to the main frame (1) via the connecting member (34).

5. A wind turbine main frame according to claim 4, characterized in that: The connecting member (34) includes a clamp (341) and a positioning pin (342); The clamp (341) and the telescopic member (33) are fixedly connected, and the clamp (341) is connected to the main frame (1) via the positioning pin (342).

6. A wind turbine main frame according to claim 4, characterized in that: A sealing ring (321) is fixedly connected to the inner wall of the collar (32), and the sealing ring (321) is used to increase the sealing performance between the collar (32) and the main frame (1).

7. A wind turbine main frame according to claim 4, characterized in that: The telescopic member (33) is a cylinder.

8. The wind turbine main frame according to claim 1, characterized in that: A mesh plate (241) is fixedly connected to the storage plate (24), and the mesh plate (241) is used for heat dissipation at the bottom of the external unit.

9. A wind turbine main frame according to claim 3, characterized in that: The elastic member (251) is a compression spring.

10. A wind turbine main frame according to claim 1, characterized in that: The blocking cover (27) is processed into a hemispherical shape.

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