Wind driven generator

Abstract

The utility model relates to the technical field of wind driven generators, and discloses a wind driven generator which comprises a cabin, a shell is rotatably arranged at the side end of the cabin, a plurality of mounting seats are fixedly connected to the side end of the shell, a blade is mounted in each mounting seat, a rotating mechanism used for fixing the blade is arranged at the outer end of the shell, and the mounting seats are fixedly connected with the rotating mechanism. According to the wind driven generator, the rotating mechanism and the limiting mechanism are arranged in a matched mode, the blades can be disassembled, and therefore when the blade set is broken due to external force impact, the whole wind driven generator does not need to be disassembled, and the whole wind driven generator is not needed to be disassembled. Therefore, the operation difficulty during replacement or maintenance of the blade group is reduced, the blades can be detached more simply, conveniently and quickly, only the blades need to be replaced independently, the whole shell and the blade group do not need to be replaced, and the maintenance cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine technology, specifically to a wind turbine. Background Technology

[0002] Small wind turbines are primarily used to convert wind energy into electrical energy, and are widely used in household power supply, agriculture, power supply in remote areas, power supply for public utilities, and portable power supply. A small wind turbine generally consists of the following key structures: the mechanical part comprises a wind turbine rotor, transmission mechanism, speed limiting or regulating mechanism, braking mechanism, and directional mechanism; the electrical part comprises a distribution box or controller, battery, and inverter. Its main principle is as follows: when wind blows across the wind turbine rotor (also called a wind turbine or blade), the rotor begins to rotate due to the force of the wind. The rotor typically consists of several blades, whose shape and angle are precisely designed to capture the maximum amount of wind energy. The rotation of the blades converts wind energy into mechanical energy, which is the first step in the small wind power generation process. The power of the rotor's rotation is transmitted to the generator through the main shaft. Inside the generator, this rotating mechanical energy drives a change in the generator's internal magnetic field, which in turn induces a current in the generator, thus converting mechanical energy into electrical energy. In a small wind power generation system, the inverter is a crucial component. Its main function is to convert the alternating current (AC) power generated by the generator into direct current (DC) power to meet the power supply needs of different devices. In addition, the inverter can connect multiple small wind power systems together to form a larger wind power system, providing greater power output.

[0003] In existing wind turbines, the casing and blade assembly are fixedly connected after installation. Therefore, when the blade assembly breaks due to external impact, the entire wind turbine needs to be disassembled. This makes the replacement or repair of the blade assembly more complicated, requiring the replacement of the entire casing and blade assembly, which increases maintenance costs. Therefore, a wind turbine is needed to solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to provide a wind turbine generator that solves the problem that in the existing technology, after the wind turbine generator is installed, the outer shell and the blade assembly are fixedly connected together. Therefore, when the blade assembly breaks due to external impact, the entire wind turbine generator needs to be disassembled. This makes the operation more complicated when replacing or repairing the blade assembly, requiring the replacement of the entire outer shell and blade assembly, which increases the maintenance cost.

[0005] This utility model provides the following technical solution: a wind turbine generator, including a nacelle, a shell rotatably disposed on the side end of the nacelle, a plurality of mounting seats fixedly connected to the side end of the shell, blades being installed inside each mounting seat, a rotating mechanism for fixing the blades being provided on the outer end of the shell, and a limiting mechanism for fixing the rotating mechanism being provided on the side end of one of the mounting seats.

[0006] As a preferred embodiment of the above technical solution, each of the mounting bases has a sliding groove inside, and each of the blades has a slider fixedly connected to its bottom end.

[0007] As a preferred embodiment of the above technical solution, each slider is slidably connected in each groove, and a limiting hole is provided between the side end of each mounting base and the side end of each slider.

[0008] As a preferred embodiment of the above technical solution, the rotating mechanism includes a rotating ring, which is rotatably disposed at the outer end of the housing. The rotating ring has an insertion hole at its side end, and several straight plates are fixedly connected to the side end of the rotating ring. Each straight plate has a limit rod fixedly connected to its side end.

[0009] As a preferred embodiment of the above technical solution, each of the limiting rods is adapted to each limiting hole, and the shape of each limiting rod and the shape of each limiting hole are both arc-shaped.

[0010] As a preferred embodiment of the above technical solution, the limiting mechanism includes a fixed frame, which is fixedly connected to the side end of one of the mounting seats. The left and right side walls inside the fixed frame are provided with moving slots. A rod is inserted into the side end of the fixed frame. A fixed plate is fixedly connected to the side end of the rod. Moving blocks are fixedly connected to the left and right side ends of the fixed plate. Each moving block is slidably connected in each moving slot. A pull plate is fixedly connected to the top of the fixed plate. A spring is fixedly connected to the side end of the fixed plate. The side end of the spring is fixedly connected to the side end of the mounting seat.

[0011] As a preferred embodiment of the above technical solution, the insertion rod is adapted to the insertion hole.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This invention utilizes a combination of a rotating mechanism and a limiting mechanism. When an external force impacts and damages the blade, pulling the pull plate moves the fixing plate. The fixing plate then compresses the spring, causing the fixing plate to retract. This movement of the fixing plate then moves the insertion rod away from the insertion hole on the side of the rotating ring. The insertion rod no longer limits the insertion hole, allowing the rotating ring to rotate easily. The rotating ring then rotates the straight plate and the limiting rod, causing the limiting rod to disengage from the limiting holes on the sides of each slider and mounting base. The limiting rod no longer limits the slider, making it easier to pull the blade and disengage the slider from the groove. This completes the blade disassembly. Therefore, when the blade assembly breaks due to an external impact, it is not necessary to disassemble the entire wind turbine. This reduces the difficulty of replacing or repairing the blade assembly, making blade disassembly simpler and faster. Only the blade needs to be replaced individually, without replacing the entire outer shell and blade assembly, thus reducing maintenance costs. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of a wind turbine generator.

[0015] Figure 2 This is an exploded structural diagram of the mounting base and blades of a wind turbine.

[0016] Figure 3 This is a cross-sectional structural diagram of a wind turbine mounting base;

[0017] Figure 4 A cross-sectional view of a limiting mechanism for a wind turbine generator;

[0018] Figure 5 for Figure 4 A magnified schematic diagram of part A in the diagram.

[0019] In the diagram: 1. Cabin; 101. Outer shell; 2. Mounting base; 201. Slide groove; 3. Blade; 301. Slider; 302. Limiting hole; 4. Rotating mechanism; 401. Rotary ring; 402. Insertion hole; 403. Straight plate; 404. Limiting rod; 5. Limiting mechanism; 501. Fixing frame; 502. Moving groove; 503. Insertion rod; 504. Fixing plate; 505. Moving block; 506. Pull plate; 507. Spring. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0021] like Figures 1-5As shown, this utility model provides a technical solution: a wind turbine generator, including a nacelle 1, with a housing 101 rotatably mounted on the side of the nacelle 1. Several mounting seats 2 are fixedly connected to the side of the housing 101, and blades 3 are installed inside each mounting seat 2. The outer end of the housing 101 is provided with a rotating mechanism 4 for fixing the blades 3. One of the mounting seats 2 is provided with a limiting mechanism 5 for fixing the rotating mechanism 4. When the limiting mechanism 5 no longer limits and fixes the rotating mechanism 4, the rotating mechanism 4 can be rotated to stop fixing the blades 3. At this time, the blades 3 can be pulled off the mounting seat 2. Therefore, when the blade 3 group breaks due to external impact, it is not necessary to disassemble the entire wind turbine generator. This reduces the difficulty of replacing or repairing the blade 3 group, making the disassembly of the blades 3 simpler and faster. Only the blades 3 need to be replaced individually, without replacing the entire housing 101 and the blade 3 group, thus reducing maintenance costs.

[0022] As one implementation method in this embodiment, such as Figure 2 As shown, each mounting base 2 has a groove 201 inside, and each blade 3 has a slider 301 fixedly connected to its bottom end. Each slider 301 is slidably connected in each groove 201. A limiting hole 302 is provided between the side end of each mounting base 2 and the side end of each slider 301. In practice, by sliding the slider 301 in the groove 201, the limiting hole 302 on the side end of the slider 301 is automatically aligned with the limiting hole 302 on the side end of the mounting base 2, which facilitates the initial installation of the blade 3. The final installation and fixation of the blade 3 is facilitated by the rotating mechanism 4 and the limiting mechanism 5.

[0023] As one implementation method in this embodiment, such as Figure 2 and Figure 3As shown, the rotating mechanism 4 includes a rotating ring 401, which is rotatably disposed at the outer end of the housing 101. A socket 402 is provided on the side end of the rotating ring 401. Several straight plates 403 are fixedly connected to the side end of the rotating ring 401. Each straight plate 403 has a limiting rod 404 fixedly connected to its side end. Each limiting rod 404 is adapted to each limiting hole 302. The shape of each limiting rod 404 and the shape of each limiting hole 302 are arc-shaped. In implementation, when the limiting mechanism 5 no longer engages the socket 402... When the limit is reached, the rotating ring 401 can be easily rotated. After the rotating ring 401 rotates, it drives the straight plate 403 and the limit rod 404 to rotate. The limit rod 404 will then disengage from each slider 301 and the limit hole 302 on the side of each mounting base 2. At this time, the limit rod 404 no longer limits the slider 301, thus making it easier to pull the blade 3 to pull the slider 301 away from the slide groove 201. At this time, the blade 3 can be disassembled. Therefore, when the blade 3 group breaks due to external impact, it is not necessary to disassemble the entire wind turbine. Therefore, the operation difficulty of replacing or repairing the blade group 3 is reduced, making the disassembly of blade 3 simpler and faster. Only blade 3 needs to be replaced, without replacing the entire housing 101 and blade group 3, thus reducing maintenance costs. When installing blade 3, the slider 301 is slidably connected in the slide groove 201. At this time, the limiting hole 302 on the side of the slider 301 is automatically aligned with the limiting hole 302 on the side of the mounting base 2. When the insertion rod 503 is no longer limiting the insertion hole 402, the rotating ring 401 can be rotated to carry the blade 3. The moving plate 403 and the limiting rod 404 rotate toward the mounting base 2. Since the limiting rod 404 is arc-shaped and the limiting hole 302 is also arc-shaped, the limiting rod 404 can be easily inserted into the limiting hole 302 after the rotating ring 401 rotates, thereby limiting each slider 301 and each blade 3, so that the slider 301 cannot move out of the groove 201, thus completing the initial fixation of the blade 3. Then, the limiting mechanism 5 can realize the final installation and fixation of the blade 3.

[0024] As one implementation method in this embodiment, such as Figure 4 and Figure 5As shown, the limiting mechanism 5 includes a fixed frame 501, which is fixedly connected to the side of one of the mounting bases 2. The fixed frame 501 has two movable slots 502 on its left and right side walls. A rod 503 is inserted into the side of the fixed frame 501, and a fixed plate 504 is fixedly connected to the side of the rod 503. Movable blocks 505 are fixedly connected to the left and right sides of the fixed plate 504, and each movable block 505 is slidably connected within each movable slot 502. A pull plate 506 is fixedly connected to the top of the fixed plate 504, and a spring 5 is fixedly connected to the side of the fixed plate 504. 07. The side end of the spring 507 is fixedly connected to the side end of the mounting base 2. The insertion rod 503 is adapted to the insertion hole 402. In practice, when the limiting rod 404 is inserted into the limiting hole 302, the insertion hole 402 on the side end of the rotating ring 401 is aligned with the position of the insertion rod 503. At this time, after the pull plate 506 is released, the spring 507 pushes against the fixing plate 504 and drives the insertion rod 503 to rebound, so that the insertion rod 503 is inserted into the insertion hole 402, thereby limiting and fixing the rotating ring 401. At this time, the rotating ring 401 cannot rotate under the limiting and fixing of the insertion rod 503, thus completing the final installation and fixing of the blade 3.

[0025] Working principle: When an external force impacts the blade 3 and causes it to break, the pulling plate 506 moves the fixing plate 504. At this time, the fixing plate 504 compresses the spring 507 and retracts. After the fixing plate 504 moves, it causes the insertion rod 503 to leave the insertion hole 402 on the side of the rotating ring 401. At this time, the insertion rod 503 no longer limits the insertion hole 402, and the rotating ring 401 can be rotated easily. After the rotating ring 401 rotates, it drives the straight plate 403 and the limiting rod 404 to rotate. The limiting rod 404 will then disengage from each slider 301 and each mounting base 2. Inside the limiting hole 302 at the end, the limiting rod 404 no longer limits the slider 301, thus facilitating the pulling of the blade 3 to pull the slider 301 away from the slide groove 201. At this time, the blade 3 can be disassembled. Therefore, when the blade 3 group breaks due to external impact, it is not necessary to disassemble the entire wind turbine. This reduces the difficulty of replacing or repairing the blade 3 group, making the disassembly of the blade 3 group simpler and faster. Only the blade 3 needs to be replaced, without replacing the entire outer shell 101 and the blade 3 group, thus reducing maintenance costs.

[0026] When the blade 3 needs to be installed, the slider 301 is slidably connected to the groove 201. At this time, the limiting hole 302 on the side of the slider 301 is automatically aligned with the limiting hole 302 on the side of the mounting base 2. When the insertion rod 503 is no longer limiting the insertion hole 402, rotating the rotating ring 401 can drive the straight plate 403 and the limiting rod 404 to rotate towards the mounting base 2. Since the limiting rod 404 is arc-shaped and the limiting hole 302 is also arc-shaped, the limiting rod 404 can be easily inserted into the limiting hole 302 after the rotating ring 401 rotates, thus facilitating the installation of each slider 3. 01 and each blade 3 are limited, so that the slider 301 cannot move out of the slide groove 201, thus completing the initial fixation of the blade 3. Then, when the limiting rod 404 is inserted into the limiting hole 302, the insertion hole 402 on the side of the rotating ring 401 is aligned with the position of the insertion rod 503. At this time, after the pull plate 506 is released, the spring 507 pushes against the fixing plate 504 and drives the insertion rod 503 to rebound, so that the insertion rod 503 is inserted into the insertion hole 402, thus limiting and fixing the rotating ring 401. At this time, the rotating ring 401 cannot rotate under the limiting and fixing of the insertion rod 503, thus completing the final installation and fixing of the blade 3.

[0027] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. A wind turbine generator, comprising a nacelle (1), characterized in that: The side end of the cabin (1) is rotatably provided with a shell (101), and the side end of the shell (101) is fixedly connected with a number of mounting seats (2). Each mounting seat (2) is equipped with a blade (3). The outer end of the shell (101) is provided with a rotating mechanism (4) for fixing the blade (3), and one of the mounting seats (2) is provided with a limiting mechanism (5) for fixing the rotating mechanism (4).

2. A wind turbine generator according to claim 1, characterized in that: Each of the mounting bases (2) has a groove (201) inside, and each of the blades (3) has a slider (301) fixedly connected to its bottom end.

3. A wind turbine generator according to claim 2, characterized in that: Each slider (301) is slidably connected in each groove (201), and a limiting hole (302) is provided between the side end of each mounting base (2) and the side end of each slider (301).

4. A wind turbine generator according to claim 3, characterized in that: The rotating mechanism (4) includes a rotating ring (401), which is rotatably disposed at the outer end of the outer shell (101). The rotating ring (401) has a hole (402) on its side end. Several straight plates (403) are fixedly connected to the side end of the rotating ring (401), and a limit rod (404) is fixedly connected to the side end of each straight plate (403).

5. A wind turbine generator according to claim 4, characterized in that: Each of the limiting rods (404) is adapted to each limiting hole (302), and the shape of each limiting rod (404) and the shape of each limiting hole (302) are both arc-shaped.

6. A wind turbine generator according to claim 5, characterized in that: The limiting mechanism (5) includes a fixing frame (501), which is fixedly connected to the side of one of the mounting seats (2). The fixing frame (501) has two moving slots (502) on its left and right side walls. A rod (503) is inserted into the side of the fixing frame (501). A fixing plate (504) is fixedly connected to the side of the rod (503). A moving block (505) is fixedly connected to the left and right side of the fixing plate (504). Each moving block (505) is slidably connected in each moving slot (502). A pull plate (506) is fixedly connected to the top of the fixing plate (504). A spring (507) is fixedly connected to the side of the fixing plate (504). The side of the spring (507) is fixedly connected to the side of the mounting seat (2).

7. A wind turbine generator according to claim 6, characterized in that: The insertion rod (503) is adapted to the insertion hole (402).

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